Merging upstream version 1.70.0+dfsg2.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

33 files changed, 5404 insertions, 0 deletions

diff --git a/vendor/openssl-sys/src/handwritten/aes.rs b/vendor/openssl-sys/src/handwritten/aes.rs
new file mode 100644
index 000000000..ba249362c
--- /dev/null
+++ b/vendor/openssl-sys/src/handwritten/aes.rs
@@ -0,0 +1,40 @@
+use super::super::*;
+use libc::*;
+
+#[repr(C)]
+pub struct AES_KEY {
+    // There is some business with AES_LONG which is there to ensure the values here are 32 bits
+    rd_key: [u32; 4 * (AES_MAXNR as usize + 1)],
+    rounds: c_int,
+}
+
+extern "C" {
+    pub fn AES_set_encrypt_key(userKey: *const c_uchar, bits: c_int, key: *mut AES_KEY) -> c_int;
+    pub fn AES_set_decrypt_key(userKey: *const c_uchar, bits: c_int, key: *mut AES_KEY) -> c_int;
+
+    #[cfg(not(osslconf = "OPENSSL_NO_DEPRECATED_3_0"))]
+    pub fn AES_ige_encrypt(
+        in_: *const c_uchar,
+        out: *mut c_uchar,
+        length: size_t,
+        key: *const AES_KEY,
+        ivec: *mut c_uchar,
+        enc: c_int,
+    );
+
+    pub fn AES_wrap_key(
+        key: *mut AES_KEY,
+        iv: *const c_uchar,
+        out: *mut c_uchar,
+        in_: *const c_uchar,
+        inlen: c_uint,
+    ) -> c_int;
+
+    pub fn AES_unwrap_key(
+        key: *mut AES_KEY,
+        iv: *const c_uchar,
+        out: *mut c_uchar,
+        in_: *const c_uchar,
+        inlen: c_uint,
+    ) -> c_int;
+}
diff --git a/vendor/openssl-sys/src/handwritten/asn1.rs b/vendor/openssl-sys/src/handwritten/asn1.rs
new file mode 100644
index 000000000..d2bc21ce5
--- /dev/null
+++ b/vendor/openssl-sys/src/handwritten/asn1.rs
@@ -0,0 +1,62 @@
+use super::super::*;
+use libc::*;
+
+#[repr(C)]
+pub struct ASN1_ENCODING {
+    pub enc: *mut c_uchar,
+    pub len: c_long,
+    pub modified: c_int,
+}
+
+extern "C" {
+    pub fn ASN1_OBJECT_free(x: *mut ASN1_OBJECT);
+}
+
+stack!(stack_st_ASN1_OBJECT);
+
+extern "C" {
+    pub fn ASN1_STRING_type_new(ty: c_int) -> *mut ASN1_STRING;
+    #[cfg(any(ossl110, libressl273))]
+    pub fn ASN1_STRING_get0_data(x: *const ASN1_STRING) -> *const c_uchar;
+    #[cfg(any(all(ossl101, not(ossl110)), libressl))]
+    pub fn ASN1_STRING_data(x: *mut ASN1_STRING) -> *mut c_uchar;
+
+    pub fn ASN1_BIT_STRING_free(x: *mut ASN1_BIT_STRING);
+
+    pub fn ASN1_STRING_free(x: *mut ASN1_STRING);
+    pub fn ASN1_STRING_length(x: *const ASN1_STRING) -> c_int;
+
+    pub fn ASN1_STRING_set(x: *mut ASN1_STRING, data: *const c_void, len: c_int) -> c_int;
+
+    pub fn ASN1_GENERALIZEDTIME_free(tm: *mut ASN1_GENERALIZEDTIME);
+    pub fn ASN1_GENERALIZEDTIME_print(b: *mut BIO, tm: *const ASN1_GENERALIZEDTIME) -> c_int;
+    pub fn ASN1_TIME_new() -> *mut ASN1_TIME;
+    #[cfg(ossl102)]
+    pub fn ASN1_TIME_diff(
+        pday: *mut c_int,
+        psec: *mut c_int,
+        from: *const ASN1_TIME,
+        to: *const ASN1_TIME,
+    ) -> c_int;
+    pub fn ASN1_TIME_free(tm: *mut ASN1_TIME);
+    pub fn ASN1_TIME_print(b: *mut BIO, tm: *const ASN1_TIME) -> c_int;
+    pub fn ASN1_TIME_set(from: *mut ASN1_TIME, to: time_t) -> *mut ASN1_TIME;
+
+    pub fn ASN1_INTEGER_free(x: *mut ASN1_INTEGER);
+    pub fn ASN1_INTEGER_dup(a: *const ASN1_INTEGER) -> *mut ASN1_INTEGER;
+    pub fn ASN1_INTEGER_get(dest: *const ASN1_INTEGER) -> c_long;
+    pub fn ASN1_INTEGER_set(dest: *mut ASN1_INTEGER, value: c_long) -> c_int;
+    pub fn ASN1_INTEGER_cmp(a: *const ASN1_INTEGER, b: *const ASN1_INTEGER) -> c_int;
+    pub fn BN_to_ASN1_INTEGER(bn: *const BIGNUM, ai: *mut ASN1_INTEGER) -> *mut ASN1_INTEGER;
+    pub fn ASN1_INTEGER_to_BN(ai: *const ASN1_INTEGER, bn: *mut BIGNUM) -> *mut BIGNUM;
+
+    pub fn ASN1_TIME_set_string(s: *mut ASN1_TIME, str: *const c_char) -> c_int;
+    #[cfg(ossl111)]
+    pub fn ASN1_TIME_set_string_X509(s: *mut ASN1_TIME, str: *const c_char) -> c_int;
+}
+
+const_ptr_api! {
+    extern "C" {
+        pub fn ASN1_STRING_to_UTF8(out: *mut *mut c_uchar, s: #[const_ptr_if(any(ossl110, libressl280))] ASN1_STRING) -> c_int;
+    }
+}
diff --git a/vendor/openssl-sys/src/handwritten/bio.rs b/vendor/openssl-sys/src/handwritten/bio.rs
new file mode 100644
index 000000000..7d9752225
--- /dev/null
+++ b/vendor/openssl-sys/src/handwritten/bio.rs
@@ -0,0 +1,107 @@
+use super::super::*;
+use libc::*;
+
+extern "C" {
+    pub fn BIO_set_flags(b: *mut BIO, flags: c_int);
+    pub fn BIO_clear_flags(b: *mut BIO, flags: c_int);
+}
+
+pub type bio_info_cb =
+    Option<unsafe extern "C" fn(*mut BIO, c_int, *const c_char, c_int, c_long, c_long)>;
+
+cfg_if! {
+    if #[cfg(any(ossl110, libressl280))] {
+        pub enum BIO_METHOD {}
+    } else {
+        #[repr(C)]
+        pub struct BIO_METHOD {
+            pub type_: c_int,
+            pub name: *const c_char,
+            pub bwrite: Option<unsafe extern "C" fn(*mut BIO, *const c_char, c_int) -> c_int>,
+            pub bread: Option<unsafe extern "C" fn(*mut BIO, *mut c_char, c_int) -> c_int>,
+            pub bputs: Option<unsafe extern "C" fn(*mut BIO, *const c_char) -> c_int>,
+            pub bgets: Option<unsafe extern "C" fn(*mut BIO, *mut c_char, c_int) -> c_int>,
+            pub ctrl: Option<unsafe extern "C" fn(*mut BIO, c_int, c_long, *mut c_void) -> c_long>,
+            pub create: Option<unsafe extern "C" fn(*mut BIO) -> c_int>,
+            pub destroy: Option<unsafe extern "C" fn(*mut BIO) -> c_int>,
+            pub callback_ctrl: Option<unsafe extern "C" fn(*mut BIO, c_int, bio_info_cb) -> c_long>,
+        }
+    }
+}
+
+const_ptr_api! {
+    extern "C" {
+        pub fn BIO_s_file() -> #[const_ptr_if(any(ossl110, libressl280))] BIO_METHOD;
+        pub fn BIO_new(type_: #[const_ptr_if(any(ossl110, libressl280))] BIO_METHOD) -> *mut BIO;
+    }
+}
+extern "C" {
+    #[cfg(not(osslconf = "OPENSSL_NO_STDIO"))]
+    pub fn BIO_new_fp(stream: *mut FILE, close_flag: c_int) -> *mut BIO;
+    #[cfg(any(ossl110, libressl273))]
+    pub fn BIO_set_data(a: *mut BIO, data: *mut c_void);
+    #[cfg(any(ossl110, libressl273))]
+    pub fn BIO_get_data(a: *mut BIO) -> *mut c_void;
+    #[cfg(any(ossl110, libressl273))]
+    pub fn BIO_set_init(a: *mut BIO, init: c_int);
+    pub fn BIO_write(b: *mut BIO, buf: *const c_void, len: c_int) -> c_int;
+    pub fn BIO_read(b: *mut BIO, buf: *mut c_void, len: c_int) -> c_int;
+    pub fn BIO_ctrl(b: *mut BIO, cmd: c_int, larg: c_long, parg: *mut c_void) -> c_long;
+    pub fn BIO_free_all(b: *mut BIO);
+}
+
+const_ptr_api! {
+    extern "C" {
+        pub fn BIO_s_mem() -> #[const_ptr_if(any(ossl110, libressl280))] BIO_METHOD;
+        pub fn BIO_new_mem_buf(buf: #[const_ptr_if(any(ossl102, libressl280))] c_void, len: c_int) -> *mut BIO;
+    }
+}
+
+extern "C" {
+    pub fn BIO_new_socket(sock: c_int, close_flag: c_int) -> *mut BIO;
+
+    #[cfg(any(ossl110, libressl273))]
+    pub fn BIO_meth_new(type_: c_int, name: *const c_char) -> *mut BIO_METHOD;
+    #[cfg(any(ossl110, libressl273))]
+    pub fn BIO_meth_free(biom: *mut BIO_METHOD);
+}
+
+#[allow(clashing_extern_declarations)]
+extern "C" {
+    #[cfg(any(ossl110, libressl273))]
+    #[link_name = "BIO_meth_set_write"]
+    pub fn BIO_meth_set_write__fixed_rust(
+        biom: *mut BIO_METHOD,
+        write: Option<unsafe extern "C" fn(*mut BIO, *const c_char, c_int) -> c_int>,
+    ) -> c_int;
+    #[cfg(any(ossl110, libressl273))]
+    #[link_name = "BIO_meth_set_read"]
+    pub fn BIO_meth_set_read__fixed_rust(
+        biom: *mut BIO_METHOD,
+        read: Option<unsafe extern "C" fn(*mut BIO, *mut c_char, c_int) -> c_int>,
+    ) -> c_int;
+    #[cfg(any(ossl110, libressl273))]
+    #[link_name = "BIO_meth_set_puts"]
+    pub fn BIO_meth_set_puts__fixed_rust(
+        biom: *mut BIO_METHOD,
+        read: Option<unsafe extern "C" fn(*mut BIO, *const c_char) -> c_int>,
+    ) -> c_int;
+    #[cfg(any(ossl110, libressl273))]
+    #[link_name = "BIO_meth_set_ctrl"]
+    pub fn BIO_meth_set_ctrl__fixed_rust(
+        biom: *mut BIO_METHOD,
+        read: Option<unsafe extern "C" fn(*mut BIO, c_int, c_long, *mut c_void) -> c_long>,
+    ) -> c_int;
+    #[cfg(any(ossl110, libressl273))]
+    #[link_name = "BIO_meth_set_create"]
+    pub fn BIO_meth_set_create__fixed_rust(
+        biom: *mut BIO_METHOD,
+        create: Option<unsafe extern "C" fn(*mut BIO) -> c_int>,
+    ) -> c_int;
+    #[cfg(any(ossl110, libressl273))]
+    #[link_name = "BIO_meth_set_destroy"]
+    pub fn BIO_meth_set_destroy__fixed_rust(
+        biom: *mut BIO_METHOD,
+        destroy: Option<unsafe extern "C" fn(*mut BIO) -> c_int>,
+    ) -> c_int;
+}
diff --git a/vendor/openssl-sys/src/handwritten/bn.rs b/vendor/openssl-sys/src/handwritten/bn.rs
new file mode 100644
index 000000000..81348f692
--- /dev/null
+++ b/vendor/openssl-sys/src/handwritten/bn.rs
@@ -0,0 +1,168 @@
+use super::super::*;
+use libc::*;
+
+extern "C" {
+    pub fn BN_CTX_new() -> *mut BN_CTX;
+    #[cfg(ossl110)]
+    pub fn BN_CTX_secure_new() -> *mut BN_CTX;
+    pub fn BN_CTX_free(ctx: *mut BN_CTX);
+    pub fn BN_rand(r: *mut BIGNUM, bits: c_int, top: c_int, bottom: c_int) -> c_int;
+    #[cfg(not(osslconf = "OPENSSL_NO_DEPRECATED_3_0"))]
+    pub fn BN_pseudo_rand(r: *mut BIGNUM, bits: c_int, top: c_int, bottom: c_int) -> c_int;
+    pub fn BN_rand_range(r: *mut BIGNUM, range: *const BIGNUM) -> c_int;
+    #[cfg(not(osslconf = "OPENSSL_NO_DEPRECATED_3_0"))]
+    pub fn BN_pseudo_rand_range(r: *mut BIGNUM, range: *const BIGNUM) -> c_int;
+    pub fn BN_new() -> *mut BIGNUM;
+    #[cfg(ossl110)]
+    pub fn BN_secure_new() -> *mut BIGNUM;
+    #[cfg(ossl110)]
+    pub fn BN_set_flags(b: *mut BIGNUM, n: c_int);
+    #[cfg(ossl110)]
+    pub fn BN_get_flags(b: *const BIGNUM, n: c_int) -> c_int;
+    pub fn BN_num_bits(bn: *const BIGNUM) -> c_int;
+    pub fn BN_clear_free(bn: *mut BIGNUM);
+    pub fn BN_bin2bn(s: *const u8, size: c_int, ret: *mut BIGNUM) -> *mut BIGNUM;
+    pub fn BN_bn2bin(a: *const BIGNUM, to: *mut u8) -> c_int;
+    #[cfg(ossl110)]
+    pub fn BN_bn2binpad(a: *const BIGNUM, to: *mut u8, tolen: c_int) -> c_int;
+    pub fn BN_sub(r: *mut BIGNUM, a: *const BIGNUM, b: *const BIGNUM) -> c_int;
+    pub fn BN_add(r: *mut BIGNUM, a: *const BIGNUM, b: *const BIGNUM) -> c_int;
+    pub fn BN_mul(r: *mut BIGNUM, a: *const BIGNUM, b: *const BIGNUM, ctx: *mut BN_CTX) -> c_int;
+    pub fn BN_sqr(r: *mut BIGNUM, a: *const BIGNUM, ctx: *mut BN_CTX) -> c_int;
+    pub fn BN_set_negative(bn: *mut BIGNUM, n: c_int);
+    #[cfg(any(ossl110, libressl350))]
+    pub fn BN_is_negative(b: *const BIGNUM) -> c_int;
+
+    pub fn BN_div(
+        dv: *mut BIGNUM,
+        rem: *mut BIGNUM,
+        a: *const BIGNUM,
+        b: *const BIGNUM,
+        ctx: *mut BN_CTX,
+    ) -> c_int;
+    pub fn BN_nnmod(
+        rem: *mut BIGNUM,
+        a: *const BIGNUM,
+        m: *const BIGNUM,
+        ctx: *mut BN_CTX,
+    ) -> c_int;
+    pub fn BN_mod_add(
+        r: *mut BIGNUM,
+        a: *const BIGNUM,
+        b: *const BIGNUM,
+        m: *const BIGNUM,
+        ctx: *mut BN_CTX,
+    ) -> c_int;
+    pub fn BN_mod_sub(
+        r: *mut BIGNUM,
+        a: *const BIGNUM,
+        b: *const BIGNUM,
+        m: *const BIGNUM,
+        ctx: *mut BN_CTX,
+    ) -> c_int;
+    pub fn BN_mod_mul(
+        r: *mut BIGNUM,
+        a: *const BIGNUM,
+        b: *const BIGNUM,
+        m: *const BIGNUM,
+        ctx: *mut BN_CTX,
+    ) -> c_int;
+    pub fn BN_mod_sqr(
+        r: *mut BIGNUM,
+        a: *const BIGNUM,
+        m: *const BIGNUM,
+        ctx: *mut BN_CTX,
+    ) -> c_int;
+
+    pub fn BN_mod_word(r: *const BIGNUM, w: BN_ULONG) -> BN_ULONG;
+    pub fn BN_div_word(r: *mut BIGNUM, w: BN_ULONG) -> BN_ULONG;
+    pub fn BN_mul_word(r: *mut BIGNUM, w: BN_ULONG) -> c_int;
+    pub fn BN_add_word(r: *mut BIGNUM, w: BN_ULONG) -> c_int;
+    pub fn BN_sub_word(r: *mut BIGNUM, w: BN_ULONG) -> c_int;
+    pub fn BN_set_word(bn: *mut BIGNUM, n: BN_ULONG) -> c_int;
+
+    pub fn BN_cmp(a: *const BIGNUM, b: *const BIGNUM) -> c_int;
+    pub fn BN_free(bn: *mut BIGNUM);
+    pub fn BN_is_bit_set(a: *const BIGNUM, n: c_int) -> c_int;
+    pub fn BN_lshift(r: *mut BIGNUM, a: *const BIGNUM, n: c_int) -> c_int;
+    pub fn BN_lshift1(r: *mut BIGNUM, a: *const BIGNUM) -> c_int;
+    pub fn BN_exp(r: *mut BIGNUM, a: *const BIGNUM, p: *const BIGNUM, ctx: *mut BN_CTX) -> c_int;
+
+    pub fn BN_mod_exp(
+        r: *mut BIGNUM,
+        a: *const BIGNUM,
+        p: *const BIGNUM,
+        m: *const BIGNUM,
+        ctx: *mut BN_CTX,
+    ) -> c_int;
+
+    pub fn BN_mask_bits(a: *mut BIGNUM, n: c_int) -> c_int;
+    pub fn BN_rshift(r: *mut BIGNUM, a: *const BIGNUM, n: c_int) -> c_int;
+    pub fn BN_rshift1(r: *mut BIGNUM, a: *const BIGNUM) -> c_int;
+    pub fn BN_bn2hex(a: *const BIGNUM) -> *mut c_char;
+    pub fn BN_bn2dec(a: *const BIGNUM) -> *mut c_char;
+    pub fn BN_hex2bn(a: *mut *mut BIGNUM, s: *const c_char) -> c_int;
+    pub fn BN_dec2bn(a: *mut *mut BIGNUM, s: *const c_char) -> c_int;
+    pub fn BN_gcd(r: *mut BIGNUM, a: *const BIGNUM, b: *const BIGNUM, ctx: *mut BN_CTX) -> c_int;
+    pub fn BN_mod_inverse(
+        r: *mut BIGNUM,
+        a: *const BIGNUM,
+        n: *const BIGNUM,
+        ctx: *mut BN_CTX,
+    ) -> *mut BIGNUM;
+    pub fn BN_clear(bn: *mut BIGNUM);
+    pub fn BN_dup(n: *const BIGNUM) -> *mut BIGNUM;
+    pub fn BN_ucmp(a: *const BIGNUM, b: *const BIGNUM) -> c_int;
+    pub fn BN_set_bit(a: *mut BIGNUM, n: c_int) -> c_int;
+    pub fn BN_clear_bit(a: *mut BIGNUM, n: c_int) -> c_int;
+
+    pub fn BN_generate_prime_ex(
+        r: *mut BIGNUM,
+        bits: c_int,
+        safe: c_int,
+        add: *const BIGNUM,
+        rem: *const BIGNUM,
+        cb: *mut BN_GENCB,
+    ) -> c_int;
+    #[cfg(not(osslconf = "OPENSSL_NO_DEPRECATED_3_0"))]
+    pub fn BN_is_prime_ex(
+        p: *const BIGNUM,
+        checks: c_int,
+        ctx: *mut BN_CTX,
+        cb: *mut BN_GENCB,
+    ) -> c_int;
+    #[cfg(not(osslconf = "OPENSSL_NO_DEPRECATED_3_0"))]
+    pub fn BN_is_prime_fasttest_ex(
+        p: *const BIGNUM,
+        checks: c_int,
+        ctx: *mut BN_CTX,
+        do_trial_division: c_int,
+        cb: *mut BN_GENCB,
+    ) -> c_int;
+}
+
+cfg_if! {
+    if #[cfg(any(ossl110, libressl350))] {
+        extern "C" {
+            pub fn BN_get_rfc2409_prime_768(bn: *mut BIGNUM) -> *mut BIGNUM;
+            pub fn BN_get_rfc2409_prime_1024(bn: *mut BIGNUM) -> *mut BIGNUM;
+            pub fn BN_get_rfc3526_prime_1536(bn: *mut BIGNUM) -> *mut BIGNUM;
+            pub fn BN_get_rfc3526_prime_2048(bn: *mut BIGNUM) -> *mut BIGNUM;
+            pub fn BN_get_rfc3526_prime_3072(bn: *mut BIGNUM) -> *mut BIGNUM;
+            pub fn BN_get_rfc3526_prime_4096(bn: *mut BIGNUM) -> *mut BIGNUM;
+            pub fn BN_get_rfc3526_prime_6144(bn: *mut BIGNUM) -> *mut BIGNUM;
+            pub fn BN_get_rfc3526_prime_8192(bn: *mut BIGNUM) -> *mut BIGNUM;
+        }
+    } else {
+        extern "C" {
+            pub fn get_rfc2409_prime_768(bn: *mut BIGNUM) -> *mut BIGNUM;
+            pub fn get_rfc2409_prime_1024(bn: *mut BIGNUM) -> *mut BIGNUM;
+            pub fn get_rfc3526_prime_1536(bn: *mut BIGNUM) -> *mut BIGNUM;
+            pub fn get_rfc3526_prime_2048(bn: *mut BIGNUM) -> *mut BIGNUM;
+            pub fn get_rfc3526_prime_3072(bn: *mut BIGNUM) -> *mut BIGNUM;
+            pub fn get_rfc3526_prime_4096(bn: *mut BIGNUM) -> *mut BIGNUM;
+            pub fn get_rfc3526_prime_6144(bn: *mut BIGNUM) -> *mut BIGNUM;
+            pub fn get_rfc3526_prime_8192(bn: *mut BIGNUM) -> *mut BIGNUM;
+        }
+    }
+}
diff --git a/vendor/openssl-sys/src/handwritten/cms.rs b/vendor/openssl-sys/src/handwritten/cms.rs
new file mode 100644
index 000000000..a13ea423c
--- /dev/null
+++ b/vendor/openssl-sys/src/handwritten/cms.rs
@@ -0,0 +1,65 @@
+use super::super::*;
+use libc::*;
+
+pub enum CMS_ContentInfo {}
+
+extern "C" {
+    #[cfg(ossl101)]
+    pub fn CMS_ContentInfo_free(cms: *mut CMS_ContentInfo);
+}
+
+const_ptr_api! {
+    extern "C" {
+        #[cfg(ossl101)]
+        pub fn i2d_CMS_ContentInfo(a: #[const_ptr_if(ossl300)] CMS_ContentInfo, pp: *mut *mut c_uchar) -> c_int;
+    }
+}
+
+extern "C" {
+    #[cfg(ossl101)]
+    pub fn d2i_CMS_ContentInfo(
+        a: *mut *mut CMS_ContentInfo,
+        pp: *mut *const c_uchar,
+        length: c_long,
+    ) -> *mut CMS_ContentInfo;
+
+    #[cfg(ossl101)]
+    pub fn SMIME_read_CMS(bio: *mut BIO, bcont: *mut *mut BIO) -> *mut CMS_ContentInfo;
+
+    #[cfg(ossl101)]
+    pub fn CMS_sign(
+        signcert: *mut X509,
+        pkey: *mut EVP_PKEY,
+        certs: *mut stack_st_X509,
+        data: *mut BIO,
+        flags: c_uint,
+    ) -> *mut CMS_ContentInfo;
+
+    #[cfg(ossl101)]
+    pub fn CMS_verify(
+        cms: *mut CMS_ContentInfo,
+        certs: *mut stack_st_X509,
+        store: *mut X509_STORE,
+        detached_data: *mut BIO,
+        out: *mut BIO,
+        flags: c_uint,
+    ) -> c_int;
+
+    #[cfg(ossl101)]
+    pub fn CMS_encrypt(
+        certs: *mut stack_st_X509,
+        data: *mut BIO,
+        cipher: *const EVP_CIPHER,
+        flags: c_uint,
+    ) -> *mut CMS_ContentInfo;
+
+    #[cfg(ossl101)]
+    pub fn CMS_decrypt(
+        cms: *mut CMS_ContentInfo,
+        pkey: *mut EVP_PKEY,
+        cert: *mut X509,
+        dcont: *mut BIO,
+        out: *mut BIO,
+        flags: c_uint,
+    ) -> c_int;
+}
diff --git a/vendor/openssl-sys/src/handwritten/conf.rs b/vendor/openssl-sys/src/handwritten/conf.rs
new file mode 100644
index 000000000..2348d7d4c
--- /dev/null
+++ b/vendor/openssl-sys/src/handwritten/conf.rs
@@ -0,0 +1,7 @@
+use super::super::*;
+
+extern "C" {
+    pub fn NCONF_new(meth: *mut CONF_METHOD) -> *mut CONF;
+    pub fn NCONF_default() -> *mut CONF_METHOD;
+    pub fn NCONF_free(conf: *mut CONF);
+}
diff --git a/vendor/openssl-sys/src/handwritten/crypto.rs b/vendor/openssl-sys/src/handwritten/crypto.rs
new file mode 100644
index 000000000..62ccbce1e
--- /dev/null
+++ b/vendor/openssl-sys/src/handwritten/crypto.rs
@@ -0,0 +1,85 @@
+use super::super::*;
+use libc::*;
+
+stack!(stack_st_void);
+
+cfg_if! {
+    if #[cfg(any(ossl110, libressl271))] {
+        extern "C" {
+            pub fn OpenSSL_version_num() -> c_ulong;
+            pub fn OpenSSL_version(key: c_int) -> *const c_char;
+        }
+    } else {
+        extern "C" {
+            pub fn SSLeay() -> c_ulong;
+            pub fn SSLeay_version(key: c_int) -> *const c_char;
+        }
+    }
+}
+
+extern "C" {
+    #[cfg(any(ossl110, libressl))]
+    pub fn CRYPTO_get_ex_new_index(
+        class_index: c_int,
+        argl: c_long,
+        argp: *mut c_void,
+        new_func: Option<CRYPTO_EX_new>,
+        dup_func: Option<CRYPTO_EX_dup>,
+        free_func: Option<CRYPTO_EX_free>,
+    ) -> c_int;
+
+    #[cfg(not(ossl110))]
+    pub fn CRYPTO_num_locks() -> c_int;
+}
+
+#[allow(clashing_extern_declarations)]
+extern "C" {
+    #[cfg(not(ossl110))]
+    #[link_name = "CRYPTO_set_locking_callback"]
+    pub fn CRYPTO_set_locking_callback__fixed_rust(
+        func: Option<unsafe extern "C" fn(mode: c_int, n: c_int, file: *const c_char, line: c_int)>,
+    );
+
+    #[cfg(not(ossl110))]
+    #[link_name = "CRYPTO_set_id_callback"]
+    pub fn CRYPTO_set_id_callback__fixed_rust(func: Option<unsafe extern "C" fn() -> c_ulong>);
+}
+
+extern "C" {
+    #[cfg(not(ossl110))]
+    pub fn CRYPTO_add_lock(
+        pointer: *mut c_int,
+        amount: c_int,
+        type_: c_int,
+        file: *const c_char,
+        line: c_int,
+    ) -> c_int;
+}
+
+cfg_if! {
+    if #[cfg(ossl110)] {
+        extern "C" {
+            pub fn CRYPTO_malloc(num: size_t, file: *const c_char, line: c_int) -> *mut c_void;
+            pub fn CRYPTO_free(buf: *mut c_void, file: *const c_char, line: c_int);
+        }
+    } else {
+        extern "C" {
+            pub fn CRYPTO_malloc(num: c_int, file: *const c_char, line: c_int) -> *mut c_void;
+            pub fn CRYPTO_free(buf: *mut c_void);
+        }
+    }
+}
+
+extern "C" {
+    #[cfg(all(ossl101, not(ossl300)))]
+    pub fn FIPS_mode() -> c_int;
+    #[cfg(all(ossl101, not(ossl300)))]
+    pub fn FIPS_mode_set(onoff: c_int) -> c_int;
+
+    pub fn CRYPTO_memcmp(a: *const c_void, b: *const c_void, len: size_t) -> c_int;
+
+    #[cfg(ossl300)]
+    pub fn OSSL_LIB_CTX_new() -> *mut OSSL_LIB_CTX;
+    #[cfg(ossl300)]
+    pub fn OSSL_LIB_CTX_free(libcts: *mut OSSL_LIB_CTX);
+}
diff --git a/vendor/openssl-sys/src/handwritten/dh.rs b/vendor/openssl-sys/src/handwritten/dh.rs
new file mode 100644
index 000000000..a4de122ea
--- /dev/null
+++ b/vendor/openssl-sys/src/handwritten/dh.rs
@@ -0,0 +1,50 @@
+use super::super::*;
+
+extern "C" {
+    pub fn DH_new() -> *mut DH;
+    pub fn DH_free(dh: *mut DH);
+
+    pub fn DH_generate_parameters(
+        prime_len: c_int,
+        generator: c_int,
+        callback: Option<extern "C" fn(c_int, c_int, *mut c_void)>,
+        cb_arg: *mut c_void,
+    ) -> *mut DH;
+
+    pub fn DH_generate_parameters_ex(
+        dh: *mut DH,
+        prime_len: c_int,
+        generator: c_int,
+        cb: *mut BN_GENCB,
+    ) -> c_int;
+
+    pub fn DH_generate_key(dh: *mut DH) -> c_int;
+    pub fn DH_compute_key(key: *mut c_uchar, pub_key: *const BIGNUM, dh: *mut DH) -> c_int;
+    pub fn DH_size(dh: *const DH) -> c_int;
+
+    pub fn d2i_DHparams(k: *mut *mut DH, pp: *mut *const c_uchar, length: c_long) -> *mut DH;
+    pub fn i2d_DHparams(dh: *const DH, pp: *mut *mut c_uchar) -> c_int;
+
+    #[cfg(ossl102)]
+    pub fn DH_get_1024_160() -> *mut DH;
+    #[cfg(ossl102)]
+    pub fn DH_get_2048_224() -> *mut DH;
+    #[cfg(ossl102)]
+    pub fn DH_get_2048_256() -> *mut DH;
+
+    #[cfg(any(ossl110, libressl270))]
+    pub fn DH_set0_pqg(dh: *mut DH, p: *mut BIGNUM, q: *mut BIGNUM, g: *mut BIGNUM) -> c_int;
+    #[cfg(any(ossl110, libressl270))]
+    pub fn DH_get0_pqg(
+        dh: *const DH,
+        p: *mut *const BIGNUM,
+        q: *mut *const BIGNUM,
+        g: *mut *const BIGNUM,
+    );
+
+    #[cfg(any(ossl110, libressl270))]
+    pub fn DH_set0_key(dh: *mut DH, pub_key: *mut BIGNUM, priv_key: *mut BIGNUM) -> c_int;
+
+    #[cfg(any(ossl110, libressl270))]
+    pub fn DH_get0_key(dh: *const DH, pub_key: *mut *const BIGNUM, priv_key: *mut *const BIGNUM);
+}
diff --git a/vendor/openssl-sys/src/handwritten/dsa.rs b/vendor/openssl-sys/src/handwritten/dsa.rs
new file mode 100644
index 000000000..be25f23b6
--- /dev/null
+++ b/vendor/openssl-sys/src/handwritten/dsa.rs
@@ -0,0 +1,85 @@
+use libc::*;
+
+use super::super::*;
+
+cfg_if! {
+    if #[cfg(any(ossl110, libressl280))] {
+        pub enum DSA_SIG {}
+    } else {
+      #[repr(C)]
+      pub struct DSA_SIG {
+          pub r: *mut BIGNUM,
+          pub s: *mut BIGNUM,
+      }
+    }
+}
+
+extern "C" {
+    pub fn DSA_new() -> *mut DSA;
+    pub fn DSA_free(dsa: *mut DSA);
+    pub fn DSA_up_ref(dsa: *mut DSA) -> c_int;
+    pub fn DSA_size(dsa: *const DSA) -> c_int;
+    pub fn DSA_sign(
+        dummy: c_int,
+        dgst: *const c_uchar,
+        len: c_int,
+        sigret: *mut c_uchar,
+        siglen: *mut c_uint,
+        dsa: *mut DSA,
+    ) -> c_int;
+    pub fn DSA_verify(
+        dummy: c_int,
+        dgst: *const c_uchar,
+        len: c_int,
+        sigbuf: *const c_uchar,
+        siglen: c_int,
+        dsa: *mut DSA,
+    ) -> c_int;
+
+    pub fn d2i_DSAPublicKey(a: *mut *mut DSA, pp: *mut *const c_uchar, length: c_long) -> *mut DSA;
+    pub fn d2i_DSAPrivateKey(a: *mut *mut DSA, pp: *mut *const c_uchar, length: c_long)
+        -> *mut DSA;
+
+    pub fn DSA_generate_parameters_ex(
+        dsa: *mut DSA,
+        bits: c_int,
+        seed: *const c_uchar,
+        seed_len: c_int,
+        counter_ref: *mut c_int,
+        h_ret: *mut c_ulong,
+        cb: *mut BN_GENCB,
+    ) -> c_int;
+
+    pub fn DSA_generate_key(dsa: *mut DSA) -> c_int;
+    pub fn i2d_DSAPublicKey(a: *const DSA, pp: *mut *mut c_uchar) -> c_int;
+    pub fn i2d_DSAPrivateKey(a: *const DSA, pp: *mut *mut c_uchar) -> c_int;
+
+    #[cfg(any(ossl110, libressl273))]
+    pub fn DSA_get0_pqg(
+        d: *const DSA,
+        p: *mut *const BIGNUM,
+        q: *mut *const BIGNUM,
+        q: *mut *const BIGNUM,
+    );
+    #[cfg(any(ossl110, libressl273))]
+    pub fn DSA_set0_pqg(d: *mut DSA, p: *mut BIGNUM, q: *mut BIGNUM, q: *mut BIGNUM) -> c_int;
+    #[cfg(any(ossl110, libressl273))]
+    pub fn DSA_get0_key(d: *const DSA, pub_key: *mut *const BIGNUM, priv_key: *mut *const BIGNUM);
+    #[cfg(any(ossl110, libressl273))]
+    pub fn DSA_set0_key(d: *mut DSA, pub_key: *mut BIGNUM, priv_key: *mut BIGNUM) -> c_int;
+    pub fn d2i_DSA_SIG(
+        sig: *mut *mut DSA_SIG,
+        pp: *mut *const c_uchar,
+        length: c_long,
+    ) -> *mut DSA_SIG;
+    pub fn i2d_DSA_SIG(a: *const DSA_SIG, pp: *mut *mut c_uchar) -> c_int;
+
+    pub fn DSA_SIG_new() -> *mut DSA_SIG;
+    pub fn DSA_SIG_free(sig: *mut DSA_SIG);
+
+    #[cfg(any(ossl110, libressl273))]
+    pub fn DSA_SIG_get0(sig: *const DSA_SIG, pr: *mut *const BIGNUM, ps: *mut *const BIGNUM);
+
+    #[cfg(any(ossl110, libressl273))]
+    pub fn DSA_SIG_set0(sig: *mut DSA_SIG, pr: *mut BIGNUM, ps: *mut BIGNUM) -> c_int;
+}
diff --git a/vendor/openssl-sys/src/handwritten/ec.rs b/vendor/openssl-sys/src/handwritten/ec.rs
new file mode 100644
index 000000000..6ee475f32
--- /dev/null
+++ b/vendor/openssl-sys/src/handwritten/ec.rs
@@ -0,0 +1,255 @@
+use super::super::*;
+use libc::*;
+
+#[repr(C)]
+#[derive(Copy, Clone)]
+pub enum point_conversion_form_t {
+    POINT_CONVERSION_COMPRESSED = 2,
+    POINT_CONVERSION_UNCOMPRESSED = 4,
+    POINT_CONVERSION_HYBRID = 6,
+}
+
+pub enum EC_METHOD {}
+pub enum EC_GROUP {}
+pub enum EC_POINT {}
+
+extern "C" {
+    #[cfg(not(osslconf = "OPENSSL_NO_EC2M"))]
+    pub fn EC_GF2m_simple_method() -> *const EC_METHOD;
+
+    pub fn EC_GROUP_new(meth: *const EC_METHOD) -> *mut EC_GROUP;
+
+    pub fn EC_GROUP_free(group: *mut EC_GROUP);
+
+    pub fn EC_GROUP_get_order(
+        group: *const EC_GROUP,
+        order: *mut BIGNUM,
+        ctx: *mut BN_CTX,
+    ) -> c_int;
+
+    pub fn EC_GROUP_get_cofactor(
+        group: *const EC_GROUP,
+        cofactor: *mut BIGNUM,
+        ctx: *mut BN_CTX,
+    ) -> c_int;
+
+    pub fn EC_GROUP_get0_generator(group: *const EC_GROUP) -> *const EC_POINT;
+
+    pub fn EC_GROUP_set_generator(
+        group: *mut EC_GROUP,
+        generator: *const EC_POINT,
+        order: *const BIGNUM,
+        cofactor: *const BIGNUM,
+    ) -> c_int;
+
+    pub fn EC_GROUP_get_curve_name(group: *const EC_GROUP) -> c_int;
+
+    pub fn EC_GROUP_set_asn1_flag(key: *mut EC_GROUP, flag: c_int);
+
+    pub fn EC_GROUP_get_curve_GFp(
+        group: *const EC_GROUP,
+        p: *mut BIGNUM,
+        a: *mut BIGNUM,
+        b: *mut BIGNUM,
+        ctx: *mut BN_CTX,
+    ) -> c_int;
+
+    #[cfg(not(osslconf = "OPENSSL_NO_EC2M"))]
+    pub fn EC_GROUP_get_curve_GF2m(
+        group: *const EC_GROUP,
+        p: *mut BIGNUM,
+        a: *mut BIGNUM,
+        b: *mut BIGNUM,
+        ctx: *mut BN_CTX,
+    ) -> c_int;
+
+    pub fn EC_GROUP_get_degree(group: *const EC_GROUP) -> c_int;
+
+    #[cfg(ossl110)]
+    pub fn EC_GROUP_order_bits(group: *const EC_GROUP) -> c_int;
+
+    pub fn EC_GROUP_new_curve_GFp(
+        p: *const BIGNUM,
+        a: *const BIGNUM,
+        b: *const BIGNUM,
+        ctx: *mut BN_CTX,
+    ) -> *mut EC_GROUP;
+
+    #[cfg(not(osslconf = "OPENSSL_NO_EC2M"))]
+    pub fn EC_GROUP_new_curve_GF2m(
+        p: *const BIGNUM,
+        a: *const BIGNUM,
+        b: *const BIGNUM,
+        ctx: *mut BN_CTX,
+    ) -> *mut EC_GROUP;
+
+    pub fn EC_GROUP_new_by_curve_name(nid: c_int) -> *mut EC_GROUP;
+
+    pub fn EC_POINT_is_at_infinity(group: *const EC_GROUP, point: *const EC_POINT) -> c_int;
+
+    pub fn EC_POINT_is_on_curve(
+        group: *const EC_GROUP,
+        point: *const EC_POINT,
+        ctx: *mut BN_CTX,
+    ) -> c_int;
+
+    pub fn EC_POINT_new(group: *const EC_GROUP) -> *mut EC_POINT;
+
+    pub fn EC_POINT_free(point: *mut EC_POINT);
+
+    pub fn EC_POINT_dup(p: *const EC_POINT, group: *const EC_GROUP) -> *mut EC_POINT;
+
+    #[cfg(ossl111)]
+    pub fn EC_POINT_get_affine_coordinates(
+        group: *const EC_GROUP,
+        p: *const EC_POINT,
+        x: *mut BIGNUM,
+        y: *mut BIGNUM,
+        ctx: *mut BN_CTX,
+    ) -> c_int;
+
+    pub fn EC_POINT_get_affine_coordinates_GFp(
+        group: *const EC_GROUP,
+        p: *const EC_POINT,
+        x: *mut BIGNUM,
+        y: *mut BIGNUM,
+        ctx: *mut BN_CTX,
+    ) -> c_int;
+
+    pub fn EC_POINT_set_affine_coordinates_GFp(
+        group: *const EC_GROUP,
+        p: *mut EC_POINT,
+        x: *const BIGNUM,
+        y: *const BIGNUM,
+        ctx: *mut BN_CTX,
+    ) -> c_int;
+
+    #[cfg(not(osslconf = "OPENSSL_NO_EC2M"))]
+    pub fn EC_POINT_get_affine_coordinates_GF2m(
+        group: *const EC_GROUP,
+        p: *const EC_POINT,
+        x: *mut BIGNUM,
+        y: *mut BIGNUM,
+        ctx: *mut BN_CTX,
+    ) -> c_int;
+
+    pub fn EC_POINT_point2oct(
+        group: *const EC_GROUP,
+        p: *const EC_POINT,
+        form: point_conversion_form_t,
+        buf: *mut c_uchar,
+        len: size_t,
+        ctx: *mut BN_CTX,
+    ) -> size_t;
+
+    pub fn EC_POINT_oct2point(
+        group: *const EC_GROUP,
+        p: *mut EC_POINT,
+        buf: *const c_uchar,
+        len: size_t,
+        ctx: *mut BN_CTX,
+    ) -> c_int;
+
+    pub fn EC_POINT_add(
+        group: *const EC_GROUP,
+        r: *mut EC_POINT,
+        a: *const EC_POINT,
+        b: *const EC_POINT,
+        ctx: *mut BN_CTX,
+    ) -> c_int;
+
+    pub fn EC_POINT_invert(group: *const EC_GROUP, r: *mut EC_POINT, ctx: *mut BN_CTX) -> c_int;
+
+    pub fn EC_POINT_cmp(
+        group: *const EC_GROUP,
+        a: *const EC_POINT,
+        b: *const EC_POINT,
+        ctx: *mut BN_CTX,
+    ) -> c_int;
+
+    pub fn EC_POINT_mul(
+        group: *const EC_GROUP,
+        r: *mut EC_POINT,
+        n: *const BIGNUM,
+        q: *const EC_POINT,
+        m: *const BIGNUM,
+        ctx: *mut BN_CTX,
+    ) -> c_int;
+
+    pub fn EC_KEY_new() -> *mut EC_KEY;
+
+    pub fn EC_KEY_new_by_curve_name(nid: c_int) -> *mut EC_KEY;
+
+    pub fn EC_KEY_free(key: *mut EC_KEY);
+
+    pub fn EC_KEY_dup(key: *const EC_KEY) -> *mut EC_KEY;
+
+    pub fn EC_KEY_up_ref(key: *mut EC_KEY) -> c_int;
+
+    pub fn EC_KEY_get0_group(key: *const EC_KEY) -> *const EC_GROUP;
+
+    pub fn EC_KEY_set_group(key: *mut EC_KEY, group: *const EC_GROUP) -> c_int;
+
+    pub fn EC_KEY_get0_private_key(key: *const EC_KEY) -> *const BIGNUM;
+
+    pub fn EC_KEY_set_private_key(key: *mut EC_KEY, key: *const BIGNUM) -> c_int;
+
+    pub fn EC_KEY_get0_public_key(key: *const EC_KEY) -> *const EC_POINT;
+
+    pub fn EC_KEY_set_public_key(key: *mut EC_KEY, key: *const EC_POINT) -> c_int;
+
+    pub fn EC_KEY_generate_key(key: *mut EC_KEY) -> c_int;
+
+    pub fn EC_KEY_check_key(key: *const EC_KEY) -> c_int;
+
+    pub fn EC_KEY_set_public_key_affine_coordinates(
+        key: *mut EC_KEY,
+        x: *mut BIGNUM,
+        y: *mut BIGNUM,
+    ) -> c_int;
+}
+
+cfg_if! {
+    if #[cfg(any(ossl110, libressl280))] {
+        pub enum ECDSA_SIG {}
+    } else {
+        #[repr(C)]
+        pub struct ECDSA_SIG {
+            pub r: *mut BIGNUM,
+            pub s: *mut BIGNUM,
+        }
+    }
+}
+
+extern "C" {
+    pub fn ECDSA_SIG_new() -> *mut ECDSA_SIG;
+
+    pub fn ECDSA_SIG_free(sig: *mut ECDSA_SIG);
+
+    #[cfg(any(ossl110, libressl273))]
+    pub fn ECDSA_SIG_get0(sig: *const ECDSA_SIG, pr: *mut *const BIGNUM, ps: *mut *const BIGNUM);
+
+    #[cfg(any(ossl110, libressl273))]
+    pub fn ECDSA_SIG_set0(sig: *mut ECDSA_SIG, pr: *mut BIGNUM, ps: *mut BIGNUM) -> c_int;
+
+    pub fn ECDSA_do_sign(
+        dgst: *const c_uchar,
+        dgst_len: c_int,
+        eckey: *mut EC_KEY,
+    ) -> *mut ECDSA_SIG;
+
+    pub fn ECDSA_do_verify(
+        dgst: *const c_uchar,
+        dgst_len: c_int,
+        sig: *const ECDSA_SIG,
+        eckey: *mut EC_KEY,
+    ) -> c_int;
+
+    pub fn d2i_ECDSA_SIG(
+        sig: *mut *mut ECDSA_SIG,
+        inp: *mut *const c_uchar,
+        length: c_long,
+    ) -> *mut ECDSA_SIG;
+
+    pub fn i2d_ECDSA_SIG(sig: *const ECDSA_SIG, out: *mut *mut c_uchar) -> c_int;
+}
diff --git a/vendor/openssl-sys/src/handwritten/err.rs b/vendor/openssl-sys/src/handwritten/err.rs
new file mode 100644
index 000000000..5653c1d18
--- /dev/null
+++ b/vendor/openssl-sys/src/handwritten/err.rs
@@ -0,0 +1,55 @@
+use super::super::*;
+use libc::*;
+
+#[repr(C)]
+pub struct ERR_STRING_DATA {
+    pub error: c_ulong,
+    pub string: *const c_char,
+}
+
+cfg_if! {
+    if #[cfg(ossl300)] {
+        extern "C" {
+            pub fn ERR_new();
+            pub fn ERR_set_debug(file: *const c_char, line: c_int, func: *const c_char);
+            pub fn ERR_set_error(lib: c_int, reason: c_int, fmt: *const c_char, ...);
+        }
+    } else {
+        extern "C" {
+            pub fn ERR_put_error(lib: c_int, func: c_int, reason: c_int, file: *const c_char, line: c_int);
+        }
+    }
+}
+
+extern "C" {
+    pub fn ERR_set_error_data(data: *mut c_char, flags: c_int);
+
+    pub fn ERR_get_error() -> c_ulong;
+    #[cfg(ossl300)]
+    pub fn ERR_get_error_all(
+        file: *mut *const c_char,
+        line: *mut c_int,
+        func: *mut *const c_char,
+        data: *mut *const c_char,
+        flags: *mut c_int,
+    ) -> c_ulong;
+    pub fn ERR_get_error_line_data(
+        file: *mut *const c_char,
+        line: *mut c_int,
+        data: *mut *const c_char,
+        flags: *mut c_int,
+    ) -> c_ulong;
+    pub fn ERR_peek_last_error() -> c_ulong;
+    pub fn ERR_clear_error();
+    pub fn ERR_lib_error_string(err: c_ulong) -> *const c_char;
+    pub fn ERR_func_error_string(err: c_ulong) -> *const c_char;
+    pub fn ERR_reason_error_string(err: c_ulong) -> *const c_char;
+    #[cfg(ossl110)]
+    pub fn ERR_load_strings(lib: c_int, str: *mut ERR_STRING_DATA) -> c_int;
+    #[cfg(not(ossl110))]
+    pub fn ERR_load_strings(lib: c_int, str: *mut ERR_STRING_DATA);
+    #[cfg(not(ossl110))]
+    pub fn ERR_load_crypto_strings();
+
+    pub fn ERR_get_next_error_library() -> c_int;
+}
diff --git a/vendor/openssl-sys/src/handwritten/evp.rs b/vendor/openssl-sys/src/handwritten/evp.rs
new file mode 100644
index 000000000..1a05b7eae
--- /dev/null
+++ b/vendor/openssl-sys/src/handwritten/evp.rs
@@ -0,0 +1,600 @@
+use super::super::*;
+use libc::*;
+
+cfg_if! {
+    if #[cfg(ossl300)] {
+        extern "C" {
+            pub fn EVP_MD_get_block_size(md: *const EVP_MD) -> c_int;
+            pub fn EVP_MD_get_size(md: *const EVP_MD) -> c_int;
+            pub fn EVP_MD_get_type(md: *const EVP_MD) -> c_int;
+
+            pub fn EVP_MD_CTX_get0_md(ctx: *const EVP_MD_CTX) -> *const EVP_MD;
+
+            pub fn EVP_CIPHER_get_key_length(cipher: *const EVP_CIPHER) -> c_int;
+            pub fn EVP_CIPHER_get_block_size(cipher: *const EVP_CIPHER) -> c_int;
+            pub fn EVP_CIPHER_get_iv_length(cipher: *const EVP_CIPHER) -> c_int;
+            pub fn EVP_CIPHER_get_nid(cipher: *const EVP_CIPHER) -> c_int;
+            pub fn EVP_CIPHER_fetch(
+                ctx: *mut OSSL_LIB_CTX,
+                algorithm: *const c_char,
+                properties: *const c_char,
+            ) -> *mut EVP_CIPHER;
+            pub fn EVP_CIPHER_free(cipher: *mut EVP_CIPHER);
+
+            pub fn EVP_CIPHER_CTX_get0_cipher(ctx: *const EVP_CIPHER_CTX) -> *const EVP_CIPHER;
+            pub fn EVP_CIPHER_CTX_get_block_size(ctx: *const EVP_CIPHER_CTX) -> c_int;
+            pub fn EVP_CIPHER_CTX_get_key_length(ctx: *const EVP_CIPHER_CTX) -> c_int;
+            pub fn EVP_CIPHER_CTX_get_iv_length(ctx: *const EVP_CIPHER_CTX) -> c_int;
+            pub fn EVP_CIPHER_CTX_get_tag_length(ctx: *const EVP_CIPHER_CTX) -> c_int;
+            pub fn EVP_CIPHER_CTX_get_num(ctx: *const EVP_CIPHER_CTX) -> c_int;
+        }
+    } else {
+        extern "C" {
+            pub fn EVP_MD_block_size(md: *const EVP_MD) -> c_int;
+            pub fn EVP_MD_size(md: *const EVP_MD) -> c_int;
+            pub fn EVP_MD_type(md: *const EVP_MD) -> c_int;
+
+            pub fn EVP_MD_CTX_md(ctx: *const EVP_MD_CTX) -> *const EVP_MD;
+
+            pub fn EVP_CIPHER_key_length(cipher: *const EVP_CIPHER) -> c_int;
+            pub fn EVP_CIPHER_block_size(cipher: *const EVP_CIPHER) -> c_int;
+            pub fn EVP_CIPHER_iv_length(cipher: *const EVP_CIPHER) -> c_int;
+            pub fn EVP_CIPHER_nid(cipher: *const EVP_CIPHER) -> c_int;
+
+            pub fn EVP_CIPHER_CTX_cipher(ctx: *const EVP_CIPHER_CTX) -> *const EVP_CIPHER;
+            pub fn EVP_CIPHER_CTX_block_size(ctx: *const EVP_CIPHER_CTX) -> c_int;
+            pub fn EVP_CIPHER_CTX_key_length(ctx: *const EVP_CIPHER_CTX) -> c_int;
+            pub fn EVP_CIPHER_CTX_iv_length(ctx: *const EVP_CIPHER_CTX) -> c_int;
+            #[cfg(ossl110)]
+            pub fn EVP_CIPHER_CTX_num(ctx: *const EVP_CIPHER_CTX) -> c_int;
+        }
+    }
+}
+
+cfg_if! {
+    if #[cfg(ossl110)] {
+        extern "C" {
+            pub fn EVP_MD_CTX_new() -> *mut EVP_MD_CTX;
+            pub fn EVP_MD_CTX_free(ctx: *mut EVP_MD_CTX);
+        }
+    } else {
+        extern "C" {
+            pub fn EVP_MD_CTX_create() -> *mut EVP_MD_CTX;
+            pub fn EVP_MD_CTX_destroy(ctx: *mut EVP_MD_CTX);
+        }
+    }
+}
+
+extern "C" {
+    pub fn EVP_DigestInit_ex(ctx: *mut EVP_MD_CTX, typ: *const EVP_MD, imple: *mut ENGINE)
+        -> c_int;
+    pub fn EVP_DigestUpdate(ctx: *mut EVP_MD_CTX, data: *const c_void, n: size_t) -> c_int;
+    pub fn EVP_DigestFinal_ex(ctx: *mut EVP_MD_CTX, res: *mut u8, n: *mut u32) -> c_int;
+    #[cfg(ossl300)]
+    pub fn EVP_Q_digest(
+        libctx: *mut OSSL_LIB_CTX,
+        name: *const c_char,
+        propq: *const c_char,
+        data: *const c_void,
+        count: size_t,
+        md: *mut c_uchar,
+        size: *mut size_t,
+    ) -> c_int;
+    pub fn EVP_DigestInit(ctx: *mut EVP_MD_CTX, typ: *const EVP_MD) -> c_int;
+    pub fn EVP_DigestFinal(ctx: *mut EVP_MD_CTX, res: *mut u8, n: *mut u32) -> c_int;
+    #[cfg(ossl111)]
+    pub fn EVP_DigestFinalXOF(ctx: *mut EVP_MD_CTX, res: *mut u8, len: usize) -> c_int;
+
+    #[cfg(ossl300)]
+    pub fn EVP_MD_fetch(
+        ctx: *mut OSSL_LIB_CTX,
+        algorithm: *const c_char,
+        properties: *const c_char,
+    ) -> *mut EVP_MD;
+
+    #[cfg(ossl300)]
+    pub fn EVP_MD_free(md: *mut EVP_MD);
+
+    pub fn EVP_BytesToKey(
+        typ: *const EVP_CIPHER,
+        md: *const EVP_MD,
+        salt: *const u8,
+        data: *const u8,
+        datalen: c_int,
+        count: c_int,
+        key: *mut u8,
+        iv: *mut u8,
+    ) -> c_int;
+
+    pub fn EVP_CipherInit(
+        ctx: *mut EVP_CIPHER_CTX,
+        evp: *const EVP_CIPHER,
+        key: *const u8,
+        iv: *const u8,
+        mode: c_int,
+    ) -> c_int;
+    pub fn EVP_CipherInit_ex(
+        ctx: *mut EVP_CIPHER_CTX,
+        type_: *const EVP_CIPHER,
+        impl_: *mut ENGINE,
+        key: *const c_uchar,
+        iv: *const c_uchar,
+        enc: c_int,
+    ) -> c_int;
+    pub fn EVP_CipherUpdate(
+        ctx: *mut EVP_CIPHER_CTX,
+        outbuf: *mut u8,
+        outlen: *mut c_int,
+        inbuf: *const u8,
+        inlen: c_int,
+    ) -> c_int;
+    pub fn EVP_CipherFinal(ctx: *mut EVP_CIPHER_CTX, res: *mut u8, len: *mut c_int) -> c_int;
+
+    pub fn EVP_DigestSignInit(
+        ctx: *mut EVP_MD_CTX,
+        pctx: *mut *mut EVP_PKEY_CTX,
+        type_: *const EVP_MD,
+        e: *mut ENGINE,
+        pkey: *mut EVP_PKEY,
+    ) -> c_int;
+
+    #[cfg(ossl300)]
+    pub fn EVP_DigestSignUpdate(ctx: *mut EVP_MD_CTX, data: *const c_void, dsize: size_t) -> c_int;
+    pub fn EVP_DigestSignFinal(
+        ctx: *mut EVP_MD_CTX,
+        sig: *mut c_uchar,
+        siglen: *mut size_t,
+    ) -> c_int;
+    pub fn EVP_DigestVerifyInit(
+        ctx: *mut EVP_MD_CTX,
+        pctx: *mut *mut EVP_PKEY_CTX,
+        type_: *const EVP_MD,
+        e: *mut ENGINE,
+        pkey: *mut EVP_PKEY,
+    ) -> c_int;
+    #[cfg(ossl300)]
+    pub fn EVP_DigestVerifyUpdate(
+        ctx: *mut EVP_MD_CTX,
+        data: *const c_void,
+        dsize: size_t,
+    ) -> c_int;
+    pub fn EVP_SealInit(
+        ctx: *mut EVP_CIPHER_CTX,
+        type_: *const EVP_CIPHER,
+        ek: *mut *mut c_uchar,
+        ekl: *mut c_int,
+        iv: *mut c_uchar,
+        pubk: *mut *mut EVP_PKEY,
+        npubk: c_int,
+    ) -> c_int;
+    pub fn EVP_SealFinal(ctx: *mut EVP_CIPHER_CTX, out: *mut c_uchar, outl: *mut c_int) -> c_int;
+    pub fn EVP_EncryptInit_ex(
+        ctx: *mut EVP_CIPHER_CTX,
+        cipher: *const EVP_CIPHER,
+        impl_: *mut ENGINE,
+        key: *const c_uchar,
+        iv: *const c_uchar,
+    ) -> c_int;
+    pub fn EVP_EncryptUpdate(
+        ctx: *mut EVP_CIPHER_CTX,
+        out: *mut c_uchar,
+        outl: *mut c_int,
+        in_: *const u8,
+        inl: c_int,
+    ) -> c_int;
+    pub fn EVP_EncryptFinal_ex(
+        ctx: *mut EVP_CIPHER_CTX,
+        out: *mut c_uchar,
+        outl: *mut c_int,
+    ) -> c_int;
+    pub fn EVP_OpenInit(
+        ctx: *mut EVP_CIPHER_CTX,
+        type_: *const EVP_CIPHER,
+        ek: *const c_uchar,
+        ekl: c_int,
+        iv: *const c_uchar,
+        priv_: *mut EVP_PKEY,
+    ) -> c_int;
+    pub fn EVP_OpenFinal(ctx: *mut EVP_CIPHER_CTX, out: *mut c_uchar, outl: *mut c_int) -> c_int;
+    pub fn EVP_DecryptInit_ex(
+        ctx: *mut EVP_CIPHER_CTX,
+        cipher: *const EVP_CIPHER,
+        impl_: *mut ENGINE,
+        key: *const c_uchar,
+        iv: *const c_uchar,
+    ) -> c_int;
+    pub fn EVP_DecryptUpdate(
+        ctx: *mut EVP_CIPHER_CTX,
+        out: *mut c_uchar,
+        outl: *mut c_int,
+        in_: *const u8,
+        inl: c_int,
+    ) -> c_int;
+    pub fn EVP_DecryptFinal_ex(
+        ctx: *mut EVP_CIPHER_CTX,
+        outm: *mut c_uchar,
+        outl: *mut c_int,
+    ) -> c_int;
+}
+cfg_if! {
+    if #[cfg(ossl300)] {
+        extern "C" {
+            pub fn EVP_PKEY_get_size(pkey: *const EVP_PKEY) -> c_int;
+        }
+    } else {
+        const_ptr_api! {
+            extern "C" {
+                pub fn EVP_PKEY_size(pkey: #[const_ptr_if(any(ossl111b, libressl280))] EVP_PKEY) -> c_int;
+            }
+        }
+    }
+}
+cfg_if! {
+    if #[cfg(any(ossl111, libressl370))] {
+        extern "C" {
+            pub fn EVP_DigestSign(
+                ctx: *mut EVP_MD_CTX,
+                sigret: *mut c_uchar,
+                siglen: *mut size_t,
+                tbs: *const c_uchar,
+                tbslen: size_t
+            ) -> c_int;
+
+            pub fn EVP_DigestVerify(
+                ctx: *mut EVP_MD_CTX,
+                sigret: *const c_uchar,
+                siglen: size_t,
+                tbs: *const c_uchar,
+                tbslen: size_t
+            ) -> c_int;
+        }
+    }
+}
+const_ptr_api! {
+    extern "C" {
+        pub fn EVP_DigestVerifyFinal(
+            ctx: *mut EVP_MD_CTX,
+            sigret: #[const_ptr_if(any(ossl102, libressl280))] c_uchar,
+            siglen: size_t,
+        ) -> c_int;
+    }
+}
+
+extern "C" {
+    pub fn EVP_CIPHER_CTX_new() -> *mut EVP_CIPHER_CTX;
+    pub fn EVP_CIPHER_CTX_free(ctx: *mut EVP_CIPHER_CTX);
+    pub fn EVP_MD_CTX_copy_ex(dst: *mut EVP_MD_CTX, src: *const EVP_MD_CTX) -> c_int;
+    #[cfg(ossl111)]
+    pub fn EVP_MD_CTX_reset(ctx: *mut EVP_MD_CTX) -> c_int;
+    pub fn EVP_CIPHER_CTX_set_key_length(ctx: *mut EVP_CIPHER_CTX, keylen: c_int) -> c_int;
+    pub fn EVP_CIPHER_CTX_set_padding(ctx: *mut EVP_CIPHER_CTX, padding: c_int) -> c_int;
+    pub fn EVP_CIPHER_CTX_ctrl(
+        ctx: *mut EVP_CIPHER_CTX,
+        type_: c_int,
+        arg: c_int,
+        ptr: *mut c_void,
+    ) -> c_int;
+    pub fn EVP_CIPHER_CTX_rand_key(ctx: *mut EVP_CIPHER_CTX, key: *mut c_uchar) -> c_int;
+
+    pub fn EVP_md_null() -> *const EVP_MD;
+    pub fn EVP_md5() -> *const EVP_MD;
+    pub fn EVP_sha1() -> *const EVP_MD;
+    pub fn EVP_sha224() -> *const EVP_MD;
+    pub fn EVP_sha256() -> *const EVP_MD;
+    pub fn EVP_sha384() -> *const EVP_MD;
+    pub fn EVP_sha512() -> *const EVP_MD;
+    #[cfg(ossl111)]
+    pub fn EVP_sha3_224() -> *const EVP_MD;
+    #[cfg(ossl111)]
+    pub fn EVP_sha3_256() -> *const EVP_MD;
+    #[cfg(ossl111)]
+    pub fn EVP_sha3_384() -> *const EVP_MD;
+    #[cfg(ossl111)]
+    pub fn EVP_sha3_512() -> *const EVP_MD;
+    #[cfg(ossl111)]
+    pub fn EVP_shake128() -> *const EVP_MD;
+    #[cfg(ossl111)]
+    pub fn EVP_shake256() -> *const EVP_MD;
+    pub fn EVP_ripemd160() -> *const EVP_MD;
+    #[cfg(all(any(ossl111, libressl291), not(osslconf = "OPENSSL_NO_SM3")))]
+    pub fn EVP_sm3() -> *const EVP_MD;
+    pub fn EVP_des_ecb() -> *const EVP_CIPHER;
+    pub fn EVP_des_ede3() -> *const EVP_CIPHER;
+    pub fn EVP_des_ede3_cbc() -> *const EVP_CIPHER;
+    pub fn EVP_des_ede3_cfb64() -> *const EVP_CIPHER;
+    pub fn EVP_des_cbc() -> *const EVP_CIPHER;
+    pub fn EVP_rc4() -> *const EVP_CIPHER;
+    pub fn EVP_bf_ecb() -> *const EVP_CIPHER;
+    pub fn EVP_bf_cbc() -> *const EVP_CIPHER;
+    pub fn EVP_bf_cfb64() -> *const EVP_CIPHER;
+    pub fn EVP_bf_ofb() -> *const EVP_CIPHER;
+    pub fn EVP_aes_128_ecb() -> *const EVP_CIPHER;
+    pub fn EVP_aes_128_cbc() -> *const EVP_CIPHER;
+    pub fn EVP_aes_128_cfb1() -> *const EVP_CIPHER;
+    pub fn EVP_aes_128_cfb8() -> *const EVP_CIPHER;
+    pub fn EVP_aes_128_cfb128() -> *const EVP_CIPHER;
+    pub fn EVP_aes_128_ctr() -> *const EVP_CIPHER;
+    pub fn EVP_aes_128_ccm() -> *const EVP_CIPHER;
+    pub fn EVP_aes_128_gcm() -> *const EVP_CIPHER;
+    pub fn EVP_aes_128_xts() -> *const EVP_CIPHER;
+    pub fn EVP_aes_128_ofb() -> *const EVP_CIPHER;
+    #[cfg(ossl110)]
+    pub fn EVP_aes_128_ocb() -> *const EVP_CIPHER;
+    pub fn EVP_aes_192_ecb() -> *const EVP_CIPHER;
+    pub fn EVP_aes_192_cbc() -> *const EVP_CIPHER;
+    pub fn EVP_aes_192_cfb1() -> *const EVP_CIPHER;
+    pub fn EVP_aes_192_cfb8() -> *const EVP_CIPHER;
+    pub fn EVP_aes_192_cfb128() -> *const EVP_CIPHER;
+    pub fn EVP_aes_192_ctr() -> *const EVP_CIPHER;
+    pub fn EVP_aes_192_ccm() -> *const EVP_CIPHER;
+    pub fn EVP_aes_192_gcm() -> *const EVP_CIPHER;
+    pub fn EVP_aes_192_ofb() -> *const EVP_CIPHER;
+    #[cfg(ossl110)]
+    pub fn EVP_aes_192_ocb() -> *const EVP_CIPHER;
+    pub fn EVP_aes_256_ecb() -> *const EVP_CIPHER;
+    pub fn EVP_aes_256_cbc() -> *const EVP_CIPHER;
+    pub fn EVP_aes_256_cfb1() -> *const EVP_CIPHER;
+    pub fn EVP_aes_256_cfb8() -> *const EVP_CIPHER;
+    pub fn EVP_aes_256_cfb128() -> *const EVP_CIPHER;
+    pub fn EVP_aes_256_ctr() -> *const EVP_CIPHER;
+    pub fn EVP_aes_256_ccm() -> *const EVP_CIPHER;
+    pub fn EVP_aes_256_gcm() -> *const EVP_CIPHER;
+    pub fn EVP_aes_256_xts() -> *const EVP_CIPHER;
+    pub fn EVP_aes_256_ofb() -> *const EVP_CIPHER;
+    #[cfg(ossl110)]
+    pub fn EVP_aes_256_ocb() -> *const EVP_CIPHER;
+    #[cfg(all(ossl110, not(osslconf = "OPENSSL_NO_CHACHA")))]
+    pub fn EVP_chacha20() -> *const EVP_CIPHER;
+    #[cfg(all(ossl110, not(osslconf = "OPENSSL_NO_CHACHA")))]
+    pub fn EVP_chacha20_poly1305() -> *const EVP_CIPHER;
+    #[cfg(not(osslconf = "OPENSSL_NO_SEED"))]
+    pub fn EVP_seed_cbc() -> *const EVP_CIPHER;
+    #[cfg(not(osslconf = "OPENSSL_NO_SEED"))]
+    pub fn EVP_seed_cfb128() -> *const EVP_CIPHER;
+    #[cfg(not(osslconf = "OPENSSL_NO_SEED"))]
+    pub fn EVP_seed_ecb() -> *const EVP_CIPHER;
+    #[cfg(not(osslconf = "OPENSSL_NO_SEED"))]
+    pub fn EVP_seed_ofb() -> *const EVP_CIPHER;
+
+    #[cfg(all(any(ossl111, libressl291), not(osslconf = "OPENSSL_NO_SM4")))]
+    pub fn EVP_sm4_ecb() -> *const EVP_CIPHER;
+    #[cfg(all(any(ossl111, libressl291), not(osslconf = "OPENSSL_NO_SM4")))]
+    pub fn EVP_sm4_cbc() -> *const EVP_CIPHER;
+    #[cfg(all(any(ossl111, libressl291), not(osslconf = "OPENSSL_NO_SM4")))]
+    pub fn EVP_sm4_cfb128() -> *const EVP_CIPHER;
+    #[cfg(all(any(ossl111, libressl291), not(osslconf = "OPENSSL_NO_SM4")))]
+    pub fn EVP_sm4_ofb() -> *const EVP_CIPHER;
+    #[cfg(all(any(ossl111, libressl291), not(osslconf = "OPENSSL_NO_SM4")))]
+    pub fn EVP_sm4_ctr() -> *const EVP_CIPHER;
+
+    #[cfg(not(any(boringssl, osslconf = "OPENSSL_NO_CAMELLIA")))]
+    pub fn EVP_camellia_128_cfb128() -> *const EVP_CIPHER;
+    #[cfg(not(any(boringssl, osslconf = "OPENSSL_NO_CAMELLIA")))]
+    pub fn EVP_camellia_128_ecb() -> *const EVP_CIPHER;
+    #[cfg(not(any(boringssl, osslconf = "OPENSSL_NO_CAMELLIA")))]
+    pub fn EVP_camellia_192_cfb128() -> *const EVP_CIPHER;
+    #[cfg(not(any(boringssl, osslconf = "OPENSSL_NO_CAMELLIA")))]
+    pub fn EVP_camellia_192_ecb() -> *const EVP_CIPHER;
+    #[cfg(not(any(boringssl, osslconf = "OPENSSL_NO_CAMELLIA")))]
+    pub fn EVP_camellia_256_cfb128() -> *const EVP_CIPHER;
+    #[cfg(not(any(boringssl, osslconf = "OPENSSL_NO_CAMELLIA")))]
+    pub fn EVP_camellia_256_ecb() -> *const EVP_CIPHER;
+
+    #[cfg(not(any(boringssl, osslconf = "OPENSSL_NO_CAST")))]
+    pub fn EVP_cast5_cfb64() -> *const EVP_CIPHER;
+    #[cfg(not(any(boringssl, osslconf = "OPENSSL_NO_CAST")))]
+    pub fn EVP_cast5_ecb() -> *const EVP_CIPHER;
+
+    #[cfg(not(any(boringssl, osslconf = "OPENSSL_NO_IDEA")))]
+    pub fn EVP_idea_cfb64() -> *const EVP_CIPHER;
+    #[cfg(not(any(boringssl, osslconf = "OPENSSL_NO_IDEA")))]
+    pub fn EVP_idea_ecb() -> *const EVP_CIPHER;
+
+    #[cfg(not(ossl110))]
+    pub fn OPENSSL_add_all_algorithms_noconf();
+
+    pub fn EVP_get_digestbyname(name: *const c_char) -> *const EVP_MD;
+    pub fn EVP_get_cipherbyname(name: *const c_char) -> *const EVP_CIPHER;
+}
+
+cfg_if! {
+    if #[cfg(ossl300)] {
+        extern "C" {
+            pub fn EVP_PKEY_get_id(pkey: *const EVP_PKEY) -> c_int;
+            pub fn EVP_PKEY_get_bits(key: *const EVP_PKEY) -> c_int;
+            pub fn EVP_PKEY_get_security_bits(key: *const EVP_PKEY) -> c_int;
+        }
+
+        #[inline]
+        pub unsafe fn EVP_PKEY_id(pkey: *const EVP_PKEY) -> c_int {
+            EVP_PKEY_get_id(pkey)
+        }
+
+        #[inline]
+        pub unsafe fn EVP_PKEY_bits(pkey: *const EVP_PKEY) -> c_int {
+            EVP_PKEY_get_bits(pkey)
+        }
+
+        #[inline]
+        pub unsafe fn EVP_PKEY_security_bits(pkey: *const EVP_PKEY) -> c_int {
+            EVP_PKEY_get_security_bits(pkey)
+        }
+
+    } else {
+        extern "C" {
+            pub fn EVP_PKEY_id(pkey: *const EVP_PKEY) -> c_int;
+        }
+        const_ptr_api! {
+            extern "C" {
+                pub fn EVP_PKEY_bits(key: #[const_ptr_if(any(ossl110, libressl280))] EVP_PKEY) -> c_int;
+                #[cfg(any(ossl110, libressl360))]
+                pub fn EVP_PKEY_security_bits(pkey: #[const_ptr_if(any(ossl110, libressl280))] EVP_PKEY) -> c_int;
+            }
+        }
+    }
+}
+extern "C" {
+    pub fn EVP_PKEY_assign(pkey: *mut EVP_PKEY, typ: c_int, key: *mut c_void) -> c_int;
+
+    pub fn EVP_PKEY_set1_RSA(k: *mut EVP_PKEY, r: *mut RSA) -> c_int;
+    pub fn EVP_PKEY_get1_RSA(k: *mut EVP_PKEY) -> *mut RSA;
+    pub fn EVP_PKEY_get1_DSA(k: *mut EVP_PKEY) -> *mut DSA;
+    pub fn EVP_PKEY_get1_DH(k: *mut EVP_PKEY) -> *mut DH;
+    pub fn EVP_PKEY_get1_EC_KEY(k: *mut EVP_PKEY) -> *mut EC_KEY;
+
+    pub fn EVP_PKEY_new() -> *mut EVP_PKEY;
+    pub fn EVP_PKEY_free(k: *mut EVP_PKEY);
+    #[cfg(any(ossl110, libressl270))]
+    pub fn EVP_PKEY_up_ref(pkey: *mut EVP_PKEY) -> c_int;
+
+    pub fn d2i_AutoPrivateKey(
+        a: *mut *mut EVP_PKEY,
+        pp: *mut *const c_uchar,
+        length: c_long,
+    ) -> *mut EVP_PKEY;
+
+    pub fn EVP_PKEY_cmp(a: *const EVP_PKEY, b: *const EVP_PKEY) -> c_int;
+
+    pub fn EVP_PKEY_copy_parameters(to: *mut EVP_PKEY, from: *const EVP_PKEY) -> c_int;
+
+    pub fn PKCS5_PBKDF2_HMAC_SHA1(
+        pass: *const c_char,
+        passlen: c_int,
+        salt: *const u8,
+        saltlen: c_int,
+        iter: c_int,
+        keylen: c_int,
+        out: *mut u8,
+    ) -> c_int;
+    pub fn PKCS5_PBKDF2_HMAC(
+        pass: *const c_char,
+        passlen: c_int,
+        salt: *const c_uchar,
+        saltlen: c_int,
+        iter: c_int,
+        digest: *const EVP_MD,
+        keylen: c_int,
+        out: *mut u8,
+    ) -> c_int;
+
+    #[cfg(ossl110)]
+    pub fn EVP_PBE_scrypt(
+        pass: *const c_char,
+        passlen: size_t,
+        salt: *const c_uchar,
+        saltlen: size_t,
+        N: u64,
+        r: u64,
+        p: u64,
+        maxmem: u64,
+        key: *mut c_uchar,
+        keylen: size_t,
+    ) -> c_int;
+
+    pub fn EVP_PKEY_CTX_new(k: *mut EVP_PKEY, e: *mut ENGINE) -> *mut EVP_PKEY_CTX;
+    pub fn EVP_PKEY_CTX_new_id(id: c_int, e: *mut ENGINE) -> *mut EVP_PKEY_CTX;
+    pub fn EVP_PKEY_CTX_free(ctx: *mut EVP_PKEY_CTX);
+
+    pub fn EVP_PKEY_CTX_ctrl(
+        ctx: *mut EVP_PKEY_CTX,
+        keytype: c_int,
+        optype: c_int,
+        cmd: c_int,
+        p1: c_int,
+        p2: *mut c_void,
+    ) -> c_int;
+
+    pub fn EVP_PKEY_new_mac_key(
+        type_: c_int,
+        e: *mut ENGINE,
+        key: *const c_uchar,
+        keylen: c_int,
+    ) -> *mut EVP_PKEY;
+
+    pub fn EVP_PKEY_derive_init(ctx: *mut EVP_PKEY_CTX) -> c_int;
+    pub fn EVP_PKEY_derive_set_peer(ctx: *mut EVP_PKEY_CTX, peer: *mut EVP_PKEY) -> c_int;
+    pub fn EVP_PKEY_derive(ctx: *mut EVP_PKEY_CTX, key: *mut c_uchar, size: *mut size_t) -> c_int;
+
+    #[cfg(ossl300)]
+    pub fn EVP_PKEY_Q_keygen(
+        libctx: *mut OSSL_LIB_CTX,
+        propq: *const c_char,
+        type_: *const c_char,
+        ...
+    ) -> *mut EVP_PKEY;
+    pub fn EVP_PKEY_keygen_init(ctx: *mut EVP_PKEY_CTX) -> c_int;
+    pub fn EVP_PKEY_keygen(ctx: *mut EVP_PKEY_CTX, key: *mut *mut EVP_PKEY) -> c_int;
+
+    pub fn EVP_PKEY_sign_init(ctx: *mut EVP_PKEY_CTX) -> c_int;
+    pub fn EVP_PKEY_sign(
+        ctx: *mut EVP_PKEY_CTX,
+        sig: *mut c_uchar,
+        siglen: *mut size_t,
+        tbs: *const c_uchar,
+        tbslen: size_t,
+    ) -> c_int;
+    pub fn EVP_PKEY_verify_init(ctx: *mut EVP_PKEY_CTX) -> c_int;
+    pub fn EVP_PKEY_verify(
+        ctx: *mut EVP_PKEY_CTX,
+        sig: *const c_uchar,
+        siglen: size_t,
+        tbs: *const c_uchar,
+        tbslen: size_t,
+    ) -> c_int;
+    pub fn EVP_PKEY_encrypt_init(ctx: *mut EVP_PKEY_CTX) -> c_int;
+    pub fn EVP_PKEY_encrypt(
+        ctx: *mut EVP_PKEY_CTX,
+        pout: *mut c_uchar,
+        poutlen: *mut size_t,
+        pin: *const c_uchar,
+        pinlen: size_t,
+    ) -> c_int;
+    pub fn EVP_PKEY_decrypt_init(ctx: *mut EVP_PKEY_CTX) -> c_int;
+    pub fn EVP_PKEY_decrypt(
+        ctx: *mut EVP_PKEY_CTX,
+        pout: *mut c_uchar,
+        poutlen: *mut size_t,
+        pin: *const c_uchar,
+        pinlen: size_t,
+    ) -> c_int;
+}
+
+const_ptr_api! {
+    extern "C" {
+        pub fn EVP_PKCS82PKEY(p8: #[const_ptr_if(any(ossl110, libressl280))] PKCS8_PRIV_KEY_INFO) -> *mut EVP_PKEY;
+    }
+}
+
+cfg_if! {
+    if #[cfg(any(ossl111, libressl370))] {
+        extern "C" {
+            pub fn EVP_PKEY_get_raw_public_key(
+                pkey: *const EVP_PKEY,
+                ppub: *mut c_uchar,
+                len: *mut size_t,
+            ) -> c_int;
+            pub fn EVP_PKEY_new_raw_public_key(
+                ttype: c_int,
+                e: *mut ENGINE,
+                key: *const c_uchar,
+                keylen: size_t,
+            ) -> *mut EVP_PKEY;
+            pub fn EVP_PKEY_get_raw_private_key(
+                pkey: *const EVP_PKEY,
+                ppriv: *mut c_uchar,
+                len: *mut size_t,
+            ) -> c_int;
+            pub fn EVP_PKEY_new_raw_private_key(
+                ttype: c_int,
+                e: *mut ENGINE,
+                key: *const c_uchar,
+                keylen: size_t,
+            ) -> *mut EVP_PKEY;
+        }
+    }
+}
+
+extern "C" {
+    pub fn EVP_EncodeBlock(dst: *mut c_uchar, src: *const c_uchar, src_len: c_int) -> c_int;
+    pub fn EVP_DecodeBlock(dst: *mut c_uchar, src: *const c_uchar, src_len: c_int) -> c_int;
+}
diff --git a/vendor/openssl-sys/src/handwritten/hmac.rs b/vendor/openssl-sys/src/handwritten/hmac.rs
new file mode 100644
index 000000000..b52d63fb1
--- /dev/null
+++ b/vendor/openssl-sys/src/handwritten/hmac.rs
@@ -0,0 +1,30 @@
+use libc::*;
+
+use super::super::*;
+
+cfg_if! {
+    if #[cfg(any(ossl110, libressl350))] {
+        extern "C" {
+            pub fn HMAC_CTX_new() -> *mut HMAC_CTX;
+            pub fn HMAC_CTX_free(ctx: *mut HMAC_CTX);
+        }
+    } else {
+        extern "C" {
+            pub fn HMAC_CTX_init(ctx: *mut HMAC_CTX);
+            pub fn HMAC_CTX_cleanup(ctx: *mut HMAC_CTX);
+        }
+    }
+}
+
+extern "C" {
+    pub fn HMAC_Init_ex(
+        ctx: *mut HMAC_CTX,
+        key: *const c_void,
+        len: c_int,
+        md: *const EVP_MD,
+        impl_: *mut ENGINE,
+    ) -> c_int;
+    pub fn HMAC_Update(ctx: *mut HMAC_CTX, data: *const c_uchar, len: size_t) -> c_int;
+    pub fn HMAC_Final(ctx: *mut HMAC_CTX, md: *mut c_uchar, len: *mut c_uint) -> c_int;
+    pub fn HMAC_CTX_copy(dst: *mut HMAC_CTX, src: *mut HMAC_CTX) -> c_int;
+}
diff --git a/vendor/openssl-sys/src/handwritten/kdf.rs b/vendor/openssl-sys/src/handwritten/kdf.rs
new file mode 100644
index 000000000..0f14b63a9
--- /dev/null
+++ b/vendor/openssl-sys/src/handwritten/kdf.rs
@@ -0,0 +1,26 @@
+use super::super::*;
+use libc::*;
+
+cfg_if! {
+    if #[cfg(ossl300)] {
+        extern "C" {
+            pub fn EVP_PKEY_CTX_set_hkdf_mode(ctx: *mut EVP_PKEY_CTX, mode: c_int) -> c_int;
+            pub fn EVP_PKEY_CTX_set_hkdf_md(ctx: *mut EVP_PKEY_CTX, md: *const EVP_MD) -> c_int;
+            pub fn EVP_PKEY_CTX_set1_hkdf_salt(
+                ctx: *mut EVP_PKEY_CTX,
+                salt: *const u8,
+                saltlen: c_int,
+            ) -> c_int;
+            pub fn EVP_PKEY_CTX_set1_hkdf_key(
+                ctx: *mut EVP_PKEY_CTX,
+                key: *const u8,
+                keylen: c_int,
+            ) -> c_int;
+            pub fn EVP_PKEY_CTX_add1_hkdf_info(
+                ctx: *mut EVP_PKEY_CTX,
+                info: *const u8,
+                infolen: c_int,
+            ) -> c_int;
+        }
+    }
+}
diff --git a/vendor/openssl-sys/src/handwritten/mod.rs b/vendor/openssl-sys/src/handwritten/mod.rs
new file mode 100644
index 000000000..28aa4aecd
--- /dev/null
+++ b/vendor/openssl-sys/src/handwritten/mod.rs
@@ -0,0 +1,65 @@
+pub use self::aes::*;
+pub use self::asn1::*;
+pub use self::bio::*;
+pub use self::bn::*;
+pub use self::cms::*;
+pub use self::conf::*;
+pub use self::crypto::*;
+pub use self::dh::*;
+pub use self::dsa::*;
+pub use self::ec::*;
+pub use self::err::*;
+pub use self::evp::*;
+pub use self::hmac::*;
+pub use self::kdf::*;
+pub use self::object::*;
+pub use self::ocsp::*;
+pub use self::pem::*;
+pub use self::pkcs12::*;
+pub use self::pkcs7::*;
+pub use self::provider::*;
+pub use self::rand::*;
+pub use self::rsa::*;
+pub use self::safestack::*;
+pub use self::sha::*;
+pub use self::srtp::*;
+pub use self::ssl::*;
+pub use self::stack::*;
+pub use self::tls1::*;
+pub use self::types::*;
+pub use self::x509::*;
+pub use self::x509_vfy::*;
+pub use self::x509v3::*;
+
+mod aes;
+mod asn1;
+mod bio;
+mod bn;
+mod cms;
+mod conf;
+mod crypto;
+mod dh;
+mod dsa;
+mod ec;
+mod err;
+mod evp;
+mod hmac;
+mod kdf;
+mod object;
+mod ocsp;
+mod pem;
+mod pkcs12;
+mod pkcs7;
+mod provider;
+mod rand;
+mod rsa;
+mod safestack;
+mod sha;
+mod srtp;
+mod ssl;
+mod stack;
+mod tls1;
+mod types;
+mod x509;
+mod x509_vfy;
+mod x509v3;
diff --git a/vendor/openssl-sys/src/handwritten/object.rs b/vendor/openssl-sys/src/handwritten/object.rs
new file mode 100644
index 000000000..06e655343
--- /dev/null
+++ b/vendor/openssl-sys/src/handwritten/object.rs
@@ -0,0 +1,30 @@
+use libc::*;
+
+use super::super::*;
+
+extern "C" {
+    pub fn OBJ_nid2ln(nid: c_int) -> *const c_char;
+    pub fn OBJ_nid2sn(nid: c_int) -> *const c_char;
+    pub fn OBJ_nid2obj(n: c_int) -> *mut ASN1_OBJECT;
+    pub fn OBJ_obj2nid(o: *const ASN1_OBJECT) -> c_int;
+    pub fn OBJ_obj2txt(
+        buf: *mut c_char,
+        buf_len: c_int,
+        a: *const ASN1_OBJECT,
+        no_name: c_int,
+    ) -> c_int;
+
+    pub fn OBJ_find_sigid_algs(signid: c_int, pdig_nid: *mut c_int, ppkey_nid: *mut c_int)
+        -> c_int;
+    pub fn OBJ_sn2nid(sn: *const libc::c_char) -> libc::c_int;
+    pub fn OBJ_txt2obj(s: *const libc::c_char, no_name: libc::c_int) -> *mut ASN1_OBJECT;
+    pub fn OBJ_create(
+        oid: *const libc::c_char,
+        sn: *const libc::c_char,
+        ln: *const libc::c_char,
+    ) -> c_int;
+    #[cfg(ossl111)]
+    pub fn OBJ_length(obj: *const ASN1_OBJECT) -> libc::size_t;
+    #[cfg(ossl111)]
+    pub fn OBJ_get0_data(obj: *const ASN1_OBJECT) -> *const c_uchar;
+}
diff --git a/vendor/openssl-sys/src/handwritten/ocsp.rs b/vendor/openssl-sys/src/handwritten/ocsp.rs
new file mode 100644
index 000000000..c194a831b
--- /dev/null
+++ b/vendor/openssl-sys/src/handwritten/ocsp.rs
@@ -0,0 +1,89 @@
+use super::super::*;
+use libc::*;
+
+pub enum OCSP_CERTID {}
+
+pub enum OCSP_ONEREQ {}
+
+pub enum OCSP_REQUEST {}
+
+pub enum OCSP_BASICRESP {}
+
+const_ptr_api! {
+    extern "C" {
+        pub fn OCSP_cert_to_id(
+            dgst: *const EVP_MD,
+            subject: #[const_ptr_if(any(ossl110, libressl281))] X509,
+            issuer: #[const_ptr_if(any(ossl110, libressl281))] X509,
+        ) -> *mut OCSP_CERTID;
+    }
+}
+
+extern "C" {
+    pub fn OCSP_request_add0_id(r: *mut OCSP_REQUEST, id: *mut OCSP_CERTID) -> *mut OCSP_ONEREQ;
+
+    pub fn OCSP_resp_find_status(
+        bs: *mut OCSP_BASICRESP,
+        id: *mut OCSP_CERTID,
+        status: *mut c_int,
+        reason: *mut c_int,
+        revtime: *mut *mut ASN1_GENERALIZEDTIME,
+        thisupd: *mut *mut ASN1_GENERALIZEDTIME,
+        nextupd: *mut *mut ASN1_GENERALIZEDTIME,
+    ) -> c_int;
+    pub fn OCSP_check_validity(
+        thisupd: *mut ASN1_GENERALIZEDTIME,
+        nextupd: *mut ASN1_GENERALIZEDTIME,
+        sec: c_long,
+        maxsec: c_long,
+    ) -> c_int;
+
+    pub fn OCSP_response_status(resp: *mut OCSP_RESPONSE) -> c_int;
+    pub fn OCSP_response_get1_basic(resp: *mut OCSP_RESPONSE) -> *mut OCSP_BASICRESP;
+
+    pub fn OCSP_response_create(status: c_int, bs: *mut OCSP_BASICRESP) -> *mut OCSP_RESPONSE;
+
+    pub fn OCSP_BASICRESP_new() -> *mut OCSP_BASICRESP;
+    pub fn OCSP_BASICRESP_free(r: *mut OCSP_BASICRESP);
+    pub fn OCSP_RESPONSE_new() -> *mut OCSP_RESPONSE;
+    pub fn OCSP_RESPONSE_free(r: *mut OCSP_RESPONSE);
+}
+
+const_ptr_api! {
+    extern "C" {
+        pub fn i2d_OCSP_RESPONSE(a: #[const_ptr_if(ossl300)] OCSP_RESPONSE, pp: *mut *mut c_uchar) -> c_int;
+    }
+}
+
+extern "C" {
+    pub fn d2i_OCSP_RESPONSE(
+        a: *mut *mut OCSP_RESPONSE,
+        pp: *mut *const c_uchar,
+        length: c_long,
+    ) -> *mut OCSP_RESPONSE;
+    pub fn OCSP_ONEREQ_free(r: *mut OCSP_ONEREQ);
+    pub fn OCSP_CERTID_free(id: *mut OCSP_CERTID);
+    pub fn OCSP_REQUEST_new() -> *mut OCSP_REQUEST;
+    pub fn OCSP_REQUEST_free(r: *mut OCSP_REQUEST);
+}
+
+const_ptr_api! {
+    extern "C" {
+        pub fn i2d_OCSP_REQUEST(a: #[const_ptr_if(ossl300)] OCSP_REQUEST, pp: *mut *mut c_uchar) -> c_int;
+    }
+}
+
+extern "C" {
+    pub fn d2i_OCSP_REQUEST(
+        a: *mut *mut OCSP_REQUEST,
+        pp: *mut *const c_uchar,
+        length: c_long,
+    ) -> *mut OCSP_REQUEST;
+
+    pub fn OCSP_basic_verify(
+        bs: *mut OCSP_BASICRESP,
+        certs: *mut stack_st_X509,
+        st: *mut X509_STORE,
+        flags: c_ulong,
+    ) -> c_int;
+}
diff --git a/vendor/openssl-sys/src/handwritten/pem.rs b/vendor/openssl-sys/src/handwritten/pem.rs
new file mode 100644
index 000000000..42997177e
--- /dev/null
+++ b/vendor/openssl-sys/src/handwritten/pem.rs
@@ -0,0 +1,191 @@
+use super::super::*;
+use libc::*;
+
+pub type pem_password_cb = Option<
+    unsafe extern "C" fn(
+        buf: *mut c_char,
+        size: c_int,
+        rwflag: c_int,
+        user_data: *mut c_void,
+    ) -> c_int,
+>;
+
+const_ptr_api! {
+    extern "C" {
+        pub fn PEM_write_bio_X509(bio: *mut BIO, x509: #[const_ptr_if(ossl300)] X509) -> c_int;
+        pub fn PEM_write_bio_X509_REQ(bio: *mut BIO, x509: #[const_ptr_if(ossl300)] X509_REQ) -> c_int;
+        pub fn PEM_write_bio_X509_CRL(bio: *mut BIO, x509: #[const_ptr_if(ossl300)] X509_CRL) -> c_int;
+        pub fn PEM_write_bio_RSAPrivateKey(
+            bp: *mut BIO,
+            rsa: #[const_ptr_if(ossl300)] RSA,
+            cipher: *const EVP_CIPHER,
+            kstr: #[const_ptr_if(ossl300)] c_uchar,
+            klen: c_int,
+            callback: pem_password_cb,
+            user_data: *mut c_void,
+        ) -> c_int;
+        pub fn PEM_write_bio_RSA_PUBKEY(bp: *mut BIO, rsa: #[const_ptr_if(ossl300)] RSA) -> c_int;
+        pub fn PEM_write_bio_DSAPrivateKey(
+            bp: *mut BIO,
+            dsa: #[const_ptr_if(ossl300)] DSA,
+            cipher: *const EVP_CIPHER,
+            kstr: #[const_ptr_if(ossl300)] c_uchar,
+            klen: c_int,
+            callback: pem_password_cb,
+            user_data: *mut c_void,
+        ) -> c_int;
+        pub fn PEM_write_bio_ECPrivateKey(
+            bio: *mut BIO,
+            key: #[const_ptr_if(ossl300)] EC_KEY,
+            cipher: *const EVP_CIPHER,
+            kstr: #[const_ptr_if(ossl300)] c_uchar,
+            klen: c_int,
+            callback: pem_password_cb,
+            user_data: *mut c_void,
+        ) -> c_int;
+        pub fn PEM_write_bio_DSA_PUBKEY(bp: *mut BIO, dsa: #[const_ptr_if(ossl300)] DSA) -> c_int;
+        pub fn PEM_write_bio_PrivateKey(
+            bio: *mut BIO,
+            pkey: #[const_ptr_if(ossl300)] EVP_PKEY,
+            cipher: *const EVP_CIPHER,
+            kstr: #[const_ptr_if(ossl300)] c_uchar,
+            klen: c_int,
+            callback: pem_password_cb,
+            user_data: *mut c_void,
+        ) -> c_int;
+        pub fn PEM_write_bio_PUBKEY(bp: *mut BIO, x: #[const_ptr_if(ossl300)] EVP_PKEY) -> c_int;
+        pub fn PEM_write_bio_PKCS8PrivateKey(
+            bio: *mut BIO,
+            pkey: #[const_ptr_if(ossl300)] EVP_PKEY,
+            cipher: *const EVP_CIPHER,
+            kstr: #[const_ptr_if(ossl300)] c_char,
+            klen: c_int,
+            callback: pem_password_cb,
+            user_data: *mut c_void,
+        ) -> c_int;
+        pub fn PEM_write_bio_PKCS7(bp: *mut BIO, x: #[const_ptr_if(ossl300)] PKCS7) -> c_int;
+        pub fn PEM_write_bio_EC_PUBKEY(bp: *mut BIO, ec: #[const_ptr_if(ossl300)] EC_KEY) -> c_int;
+        pub fn i2d_PKCS8PrivateKey_bio(
+            bp: *mut BIO,
+            x: #[const_ptr_if(ossl300)] EVP_PKEY,
+            enc: *const EVP_CIPHER,
+            kstr: #[const_ptr_if(ossl300)] c_char,
+            klen: c_int,
+            cb: pem_password_cb,
+            u: *mut c_void,
+        ) -> c_int;
+    }
+}
+
+extern "C" {
+    pub fn PEM_read_bio_X509(
+        bio: *mut BIO,
+        out: *mut *mut X509,
+        callback: pem_password_cb,
+        user_data: *mut c_void,
+    ) -> *mut X509;
+    pub fn PEM_read_bio_X509_REQ(
+        bio: *mut BIO,
+        out: *mut *mut X509_REQ,
+        callback: pem_password_cb,
+        user_data: *mut c_void,
+    ) -> *mut X509_REQ;
+    pub fn PEM_read_bio_X509_CRL(
+        bio: *mut BIO,
+        out: *mut *mut X509_CRL,
+        callback: pem_password_cb,
+        user_data: *mut c_void,
+    ) -> *mut X509_CRL;
+    pub fn PEM_read_bio_RSAPrivateKey(
+        bio: *mut BIO,
+        rsa: *mut *mut RSA,
+        callback: pem_password_cb,
+        user_data: *mut c_void,
+    ) -> *mut RSA;
+    pub fn PEM_read_bio_RSAPublicKey(
+        bio: *mut BIO,
+        rsa: *mut *mut RSA,
+        callback: pem_password_cb,
+        user_data: *mut c_void,
+    ) -> *mut RSA;
+    pub fn PEM_write_bio_RSAPublicKey(bp: *mut BIO, rsa: *const RSA) -> c_int;
+    pub fn PEM_read_bio_RSA_PUBKEY(
+        bio: *mut BIO,
+        rsa: *mut *mut RSA,
+        callback: pem_password_cb,
+        user_data: *mut c_void,
+    ) -> *mut RSA;
+    pub fn PEM_read_bio_DSAPrivateKey(
+        bp: *mut BIO,
+        dsa: *mut *mut DSA,
+        callback: pem_password_cb,
+        user_data: *mut c_void,
+    ) -> *mut DSA;
+    pub fn PEM_read_bio_DSA_PUBKEY(
+        bp: *mut BIO,
+        dsa: *mut *mut DSA,
+        callback: pem_password_cb,
+        user_data: *mut c_void,
+    ) -> *mut DSA;
+    pub fn PEM_read_bio_ECPrivateKey(
+        bio: *mut BIO,
+        key: *mut *mut EC_KEY,
+        callback: pem_password_cb,
+        user_data: *mut c_void,
+    ) -> *mut EC_KEY;
+    pub fn PEM_read_bio_EC_PUBKEY(
+        bp: *mut BIO,
+        ec: *mut *mut EC_KEY,
+        callback: pem_password_cb,
+        user_data: *mut c_void,
+    ) -> *mut EC_KEY;
+    pub fn PEM_read_bio_DHparams(
+        bio: *mut BIO,
+        out: *mut *mut DH,
+        callback: pem_password_cb,
+        user_data: *mut c_void,
+    ) -> *mut DH;
+    pub fn PEM_write_bio_DHparams(bio: *mut BIO, x: *const DH) -> c_int;
+    pub fn PEM_read_bio_PrivateKey(
+        bio: *mut BIO,
+        out: *mut *mut EVP_PKEY,
+        callback: pem_password_cb,
+        user_data: *mut c_void,
+    ) -> *mut EVP_PKEY;
+    pub fn PEM_read_bio_PUBKEY(
+        bio: *mut BIO,
+        out: *mut *mut EVP_PKEY,
+        callback: pem_password_cb,
+        user_data: *mut c_void,
+    ) -> *mut EVP_PKEY;
+
+    pub fn d2i_PKCS8PrivateKey_bio(
+        bp: *mut BIO,
+        x: *mut *mut EVP_PKEY,
+        cb: pem_password_cb,
+        u: *mut c_void,
+    ) -> *mut EVP_PKEY;
+    pub fn d2i_PKCS8_PRIV_KEY_INFO(
+        k: *mut *mut PKCS8_PRIV_KEY_INFO,
+        buf: *mut *const u8,
+        length: c_long,
+    ) -> *mut PKCS8_PRIV_KEY_INFO;
+    pub fn PKCS8_PRIV_KEY_INFO_free(p8inf: *mut PKCS8_PRIV_KEY_INFO);
+
+    pub fn PEM_read_bio_PKCS7(
+        bio: *mut BIO,
+        out: *mut *mut PKCS7,
+        cb: pem_password_cb,
+        u: *mut c_void,
+    ) -> *mut PKCS7;
+
+    #[cfg(ossl101)]
+    pub fn PEM_read_bio_CMS(
+        bio: *mut BIO,
+        out: *mut *mut CMS_ContentInfo,
+        callback: pem_password_cb,
+        user_data: *mut c_void,
+    ) -> *mut CMS_ContentInfo;
+    #[cfg(ossl101)]
+    pub fn PEM_write_bio_CMS(bio: *mut BIO, cms: *const CMS_ContentInfo) -> c_int;
+}
diff --git a/vendor/openssl-sys/src/handwritten/pkcs12.rs b/vendor/openssl-sys/src/handwritten/pkcs12.rs
new file mode 100644
index 000000000..728c333ad
--- /dev/null
+++ b/vendor/openssl-sys/src/handwritten/pkcs12.rs
@@ -0,0 +1,53 @@
+use libc::*;
+
+use super::super::*;
+
+pub enum PKCS12 {}
+
+extern "C" {
+    pub fn PKCS12_free(p12: *mut PKCS12);
+}
+const_ptr_api! {
+    extern "C" {
+        pub fn i2d_PKCS12(a: #[const_ptr_if(ossl300)] PKCS12, buf: *mut *mut u8) -> c_int;
+    }
+}
+extern "C" {
+    pub fn d2i_PKCS12(a: *mut *mut PKCS12, pp: *mut *const u8, length: c_long) -> *mut PKCS12;
+
+    pub fn PKCS12_parse(
+        p12: *mut PKCS12,
+        pass: *const c_char,
+        pkey: *mut *mut EVP_PKEY,
+        cert: *mut *mut X509,
+        ca: *mut *mut stack_st_X509,
+    ) -> c_int;
+
+    pub fn PKCS12_set_mac(
+        p12: *mut PKCS12,
+        pass: *const c_char,
+        passlen: c_int,
+        salt: *mut c_uchar,
+        saltlen: c_int,
+        iter: c_int,
+        md_type: *const EVP_MD,
+    ) -> c_int;
+}
+const_ptr_api! {
+    extern "C" {
+        pub fn PKCS12_create(
+            pass: #[const_ptr_if(any(ossl110, libressl280))] c_char,
+            friendly_name: #[const_ptr_if(any(ossl110, libressl280))] c_char,
+            pkey: *mut EVP_PKEY,
+            cert: *mut X509,
+            ca: *mut stack_st_X509,
+            nid_key: c_int,
+            nid_cert: c_int,
+            iter: c_int,
+            mac_iter: c_int,
+            keytype: c_int,
+        ) -> *mut PKCS12;
+
+        pub fn i2d_PKCS12_bio(b: *mut BIO, a: #[const_ptr_if(ossl300)] PKCS12) -> c_int;
+    }
+}
diff --git a/vendor/openssl-sys/src/handwritten/pkcs7.rs b/vendor/openssl-sys/src/handwritten/pkcs7.rs
new file mode 100644
index 000000000..78f96ec3e
--- /dev/null
+++ b/vendor/openssl-sys/src/handwritten/pkcs7.rs
@@ -0,0 +1,70 @@
+use super::super::*;
+use libc::*;
+
+pub enum PKCS7_SIGNED {}
+pub enum PKCS7_ENVELOPE {}
+pub enum PKCS7_SIGN_ENVELOPE {}
+pub enum PKCS7_DIGEST {}
+pub enum PKCS7_ENCRYPT {}
+pub enum PKCS7 {}
+
+extern "C" {
+    pub fn d2i_PKCS7(a: *mut *mut PKCS7, pp: *mut *const c_uchar, length: c_long) -> *mut PKCS7;
+}
+
+const_ptr_api! {
+    extern "C" {
+        pub fn i2d_PKCS7(a: #[const_ptr_if(ossl300)] PKCS7, buf: *mut *mut u8) -> c_int;
+    }
+}
+
+extern "C" {
+    pub fn PKCS7_encrypt(
+        certs: *mut stack_st_X509,
+        b: *mut BIO,
+        cipher: *const EVP_CIPHER,
+        flags: c_int,
+    ) -> *mut PKCS7;
+
+    pub fn PKCS7_verify(
+        pkcs7: *mut PKCS7,
+        certs: *mut stack_st_X509,
+        store: *mut X509_STORE,
+        indata: *mut BIO,
+        out: *mut BIO,
+        flags: c_int,
+    ) -> c_int;
+
+    pub fn PKCS7_get0_signers(
+        pkcs7: *mut PKCS7,
+        certs: *mut stack_st_X509,
+        flags: c_int,
+    ) -> *mut stack_st_X509;
+
+    pub fn PKCS7_sign(
+        signcert: *mut X509,
+        pkey: *mut EVP_PKEY,
+        certs: *mut stack_st_X509,
+        data: *mut BIO,
+        flags: c_int,
+    ) -> *mut PKCS7;
+
+    pub fn PKCS7_decrypt(
+        pkcs7: *mut PKCS7,
+        pkey: *mut EVP_PKEY,
+        cert: *mut X509,
+        data: *mut BIO,
+        flags: c_int,
+    ) -> c_int;
+
+    pub fn PKCS7_free(pkcs7: *mut PKCS7);
+
+    pub fn SMIME_write_PKCS7(
+        out: *mut BIO,
+        pkcs7: *mut PKCS7,
+        data: *mut BIO,
+        flags: c_int,
+    ) -> c_int;
+
+    pub fn SMIME_read_PKCS7(bio: *mut BIO, bcont: *mut *mut BIO) -> *mut PKCS7;
+}
diff --git a/vendor/openssl-sys/src/handwritten/provider.rs b/vendor/openssl-sys/src/handwritten/provider.rs
new file mode 100644
index 000000000..3e18a02be
--- /dev/null
+++ b/vendor/openssl-sys/src/handwritten/provider.rs
@@ -0,0 +1,20 @@
+use super::super::*;
+use libc::*;
+
+extern "C" {
+    #[cfg(ossl300)]
+    pub fn OSSL_PROVIDER_load(ctx: *mut OSSL_LIB_CTX, name: *const c_char) -> *mut OSSL_PROVIDER;
+    #[cfg(ossl300)]
+    pub fn OSSL_PROVIDER_try_load(
+        ctx: *mut OSSL_LIB_CTX,
+        name: *const c_char,
+        retain_fallbacks: c_int,
+    ) -> *mut OSSL_PROVIDER;
+    #[cfg(ossl300)]
+    pub fn OSSL_PROVIDER_unload(prov: *mut OSSL_PROVIDER) -> c_int;
+    #[cfg(ossl300)]
+    pub fn OSSL_PROVIDER_set_default_search_path(
+        ctx: *mut OSSL_LIB_CTX,
+        path: *const c_char,
+    ) -> c_int;
+}
diff --git a/vendor/openssl-sys/src/handwritten/rand.rs b/vendor/openssl-sys/src/handwritten/rand.rs
new file mode 100644
index 000000000..3bf9da592
--- /dev/null
+++ b/vendor/openssl-sys/src/handwritten/rand.rs
@@ -0,0 +1,12 @@
+use libc::*;
+
+extern "C" {
+    pub fn RAND_bytes(buf: *mut u8, num: c_int) -> c_int;
+
+    #[cfg(ossl111)]
+    pub fn RAND_keep_random_devices_open(keep: c_int);
+
+    pub fn RAND_status() -> c_int;
+
+    pub fn RAND_add(buf: *const c_void, num: c_int, randomness: c_double);
+}
diff --git a/vendor/openssl-sys/src/handwritten/rsa.rs b/vendor/openssl-sys/src/handwritten/rsa.rs
new file mode 100644
index 000000000..d05edfc30
--- /dev/null
+++ b/vendor/openssl-sys/src/handwritten/rsa.rs
@@ -0,0 +1,124 @@
+use super::super::*;
+use libc::*;
+
+cfg_if! {
+    if #[cfg(ossl300)] {
+        extern "C" {
+            pub fn EVP_PKEY_CTX_set_rsa_padding(ctx: *mut EVP_PKEY_CTX, pad_mode: c_int) -> c_int;
+            pub fn EVP_PKEY_CTX_get_rsa_padding(ctx: *mut EVP_PKEY_CTX, pad_mode: *mut c_int) -> c_int;
+
+            pub fn EVP_PKEY_CTX_set_rsa_pss_saltlen(ctx: *mut EVP_PKEY_CTX, len: c_int) -> c_int;
+            pub fn EVP_PKEY_CTX_set_rsa_mgf1_md(ctx: *mut EVP_PKEY_CTX, md: *const EVP_MD) -> c_int;
+        }
+    }
+}
+
+extern "C" {
+    pub fn RSA_new() -> *mut RSA;
+    pub fn RSA_size(k: *const RSA) -> c_int;
+
+    #[cfg(any(ossl110, libressl273))]
+    pub fn RSA_set0_key(r: *mut RSA, n: *mut BIGNUM, e: *mut BIGNUM, d: *mut BIGNUM) -> c_int;
+    #[cfg(any(ossl110, libressl273))]
+    pub fn RSA_set0_factors(r: *mut RSA, p: *mut BIGNUM, q: *mut BIGNUM) -> c_int;
+    #[cfg(any(ossl110, libressl273))]
+    pub fn RSA_set0_crt_params(
+        r: *mut RSA,
+        dmp1: *mut BIGNUM,
+        dmq1: *mut BIGNUM,
+        iqmp: *mut BIGNUM,
+    ) -> c_int;
+    #[cfg(any(ossl110, libressl273))]
+    pub fn RSA_get0_key(
+        r: *const RSA,
+        n: *mut *const BIGNUM,
+        e: *mut *const BIGNUM,
+        d: *mut *const BIGNUM,
+    );
+    #[cfg(any(ossl110, libressl273))]
+    pub fn RSA_get0_factors(r: *const RSA, p: *mut *const BIGNUM, q: *mut *const BIGNUM);
+    #[cfg(any(ossl110, libressl273))]
+    pub fn RSA_get0_crt_params(
+        r: *const RSA,
+        dmp1: *mut *const BIGNUM,
+        dmq1: *mut *const BIGNUM,
+        iqmp: *mut *const BIGNUM,
+    );
+
+    #[cfg(not(ossl110))]
+    pub fn RSA_generate_key(
+        modsz: c_int,
+        e: c_ulong,
+        cb: Option<extern "C" fn(c_int, c_int, *mut c_void)>,
+        cbarg: *mut c_void,
+    ) -> *mut RSA;
+
+    pub fn RSA_generate_key_ex(
+        rsa: *mut RSA,
+        bits: c_int,
+        e: *mut BIGNUM,
+        cb: *mut BN_GENCB,
+    ) -> c_int;
+
+    pub fn RSA_public_encrypt(
+        flen: c_int,
+        from: *const u8,
+        to: *mut u8,
+        k: *mut RSA,
+        pad: c_int,
+    ) -> c_int;
+    pub fn RSA_private_encrypt(
+        flen: c_int,
+        from: *const u8,
+        to: *mut u8,
+        k: *mut RSA,
+        pad: c_int,
+    ) -> c_int;
+    pub fn RSA_public_decrypt(
+        flen: c_int,
+        from: *const u8,
+        to: *mut u8,
+        k: *mut RSA,
+        pad: c_int,
+    ) -> c_int;
+    pub fn RSA_private_decrypt(
+        flen: c_int,
+        from: *const u8,
+        to: *mut u8,
+        k: *mut RSA,
+        pad: c_int,
+    ) -> c_int;
+    pub fn RSA_check_key(r: *const RSA) -> c_int;
+    pub fn RSA_free(rsa: *mut RSA);
+    pub fn RSA_up_ref(rsa: *mut RSA) -> c_int;
+
+    pub fn i2d_RSAPublicKey(k: *const RSA, buf: *mut *mut u8) -> c_int;
+    pub fn d2i_RSAPublicKey(k: *mut *mut RSA, buf: *mut *const u8, len: c_long) -> *mut RSA;
+    pub fn i2d_RSAPrivateKey(k: *const RSA, buf: *mut *mut u8) -> c_int;
+    pub fn d2i_RSAPrivateKey(k: *mut *mut RSA, buf: *mut *const u8, len: c_long) -> *mut RSA;
+
+    pub fn RSA_sign(
+        t: c_int,
+        m: *const u8,
+        mlen: c_uint,
+        sig: *mut u8,
+        siglen: *mut c_uint,
+        k: *mut RSA,
+    ) -> c_int;
+    pub fn RSA_verify(
+        t: c_int,
+        m: *const u8,
+        mlen: c_uint,
+        sig: *const u8,
+        siglen: c_uint,
+        k: *mut RSA,
+    ) -> c_int;
+
+    pub fn RSA_padding_check_PKCS1_type_2(
+        to: *mut c_uchar,
+        tlen: c_int,
+        f: *const c_uchar,
+        fl: c_int,
+        rsa_len: c_int,
+    ) -> c_int;
+}
diff --git a/vendor/openssl-sys/src/handwritten/safestack.rs b/vendor/openssl-sys/src/handwritten/safestack.rs
new file mode 100644
index 000000000..0bee90d96
--- /dev/null
+++ b/vendor/openssl-sys/src/handwritten/safestack.rs
@@ -0,0 +1 @@
+stack!(stack_st_OPENSSL_STRING);
diff --git a/vendor/openssl-sys/src/handwritten/sha.rs b/vendor/openssl-sys/src/handwritten/sha.rs
new file mode 100644
index 000000000..7d00b592f
--- /dev/null
+++ b/vendor/openssl-sys/src/handwritten/sha.rs
@@ -0,0 +1,101 @@
+use super::super::*;
+use libc::*;
+
+cfg_if! {
+    if #[cfg(not(osslconf = "OPENSSL_NO_DEPRECATED_3_0"))] {
+        #[repr(C)]
+        #[derive(Clone)]
+        pub struct SHA_CTX {
+            pub h0: SHA_LONG,
+            pub h1: SHA_LONG,
+            pub h2: SHA_LONG,
+            pub h3: SHA_LONG,
+            pub h4: SHA_LONG,
+            pub Nl: SHA_LONG,
+            pub Nh: SHA_LONG,
+            pub data: [SHA_LONG; SHA_LBLOCK as usize],
+            pub num: c_uint,
+        }
+
+        extern "C" {
+            pub fn SHA1_Init(c: *mut SHA_CTX) -> c_int;
+            pub fn SHA1_Update(c: *mut SHA_CTX, data: *const c_void, len: size_t) -> c_int;
+            pub fn SHA1_Final(md: *mut c_uchar, c: *mut SHA_CTX) -> c_int;
+        }
+    }
+}
+
+cfg_if! {
+    if #[cfg(not(ossl300))] {
+        extern "C" {
+            pub fn SHA1(d: *const c_uchar, n: size_t, md: *mut c_uchar) -> *mut c_uchar;
+        }
+    }
+}
+
+cfg_if! {
+    if #[cfg(not(osslconf = "OPENSSL_NO_DEPRECATED_3_0"))] {
+        #[repr(C)]
+        #[derive(Clone)]
+        pub struct SHA256_CTX {
+            pub h: [SHA_LONG; 8],
+            pub Nl: SHA_LONG,
+            pub Nh: SHA_LONG,
+            pub data: [SHA_LONG; SHA_LBLOCK as usize],
+            pub num: c_uint,
+            pub md_len: c_uint,
+        }
+
+        extern "C" {
+            pub fn SHA224_Init(c: *mut SHA256_CTX) -> c_int;
+            pub fn SHA224_Update(c: *mut SHA256_CTX, data: *const c_void, len: size_t) -> c_int;
+            pub fn SHA224_Final(md: *mut c_uchar, c: *mut SHA256_CTX) -> c_int;
+            pub fn SHA256_Init(c: *mut SHA256_CTX) -> c_int;
+            pub fn SHA256_Update(c: *mut SHA256_CTX, data: *const c_void, len: size_t) -> c_int;
+            pub fn SHA256_Final(md: *mut c_uchar, c: *mut SHA256_CTX) -> c_int;
+        }
+    }
+}
+
+cfg_if! {
+    if #[cfg(not(ossl300))] {
+        extern "C" {
+            pub fn SHA224(d: *const c_uchar, n: size_t, md: *mut c_uchar) -> *mut c_uchar;
+            pub fn SHA256(d: *const c_uchar, n: size_t, md: *mut c_uchar) -> *mut c_uchar;
+        }
+    }
+}
+
+cfg_if! {
+    if #[cfg(not(osslconf = "OPENSSL_NO_DEPRECATED_3_0"))] {
+        #[repr(C)]
+        #[derive(Clone)]
+        pub struct SHA512_CTX {
+            pub h: [SHA_LONG64; 8],
+            pub Nl: SHA_LONG64,
+            pub Nh: SHA_LONG64,
+            // this is a union but we don't want to require 1.19
+            u: [SHA_LONG64; SHA_LBLOCK as usize],
+            pub num: c_uint,
+            pub md_len: c_uint,
+        }
+
+        extern "C" {
+            pub fn SHA384_Init(c: *mut SHA512_CTX) -> c_int;
+            pub fn SHA384_Update(c: *mut SHA512_CTX, data: *const c_void, len: size_t) -> c_int;
+            pub fn SHA384_Final(md: *mut c_uchar, c: *mut SHA512_CTX) -> c_int;
+            pub fn SHA512_Init(c: *mut SHA512_CTX) -> c_int;
+            pub fn SHA512_Update(c: *mut SHA512_CTX, data: *const c_void, len: size_t) -> c_int;
+            pub fn SHA512_Final(md: *mut c_uchar, c: *mut SHA512_CTX) -> c_int;
+        }
+    }
+}
+
+cfg_if! {
+    if #[cfg(not(ossl300))] {
+        extern "C" {
+            pub fn SHA384(d: *const c_uchar, n: size_t, md: *mut c_uchar) -> *mut c_uchar;
+            pub fn SHA512(d: *const c_uchar, n: size_t, md: *mut c_uchar) -> *mut c_uchar;
+        }
+    }
+}
diff --git a/vendor/openssl-sys/src/handwritten/srtp.rs b/vendor/openssl-sys/src/handwritten/srtp.rs
new file mode 100644
index 000000000..d4c7af8eb
--- /dev/null
+++ b/vendor/openssl-sys/src/handwritten/srtp.rs
@@ -0,0 +1,10 @@
+use super::super::*;
+use libc::*;
+
+extern "C" {
+    pub fn SSL_CTX_set_tlsext_use_srtp(ctx: *mut SSL_CTX, profiles: *const c_char) -> c_int;
+    pub fn SSL_set_tlsext_use_srtp(ssl: *mut SSL, profiles: *const c_char) -> c_int;
+
+    pub fn SSL_get_srtp_profiles(ssl: *mut SSL) -> *mut stack_st_SRTP_PROTECTION_PROFILE;
+    pub fn SSL_get_selected_srtp_profile(ssl: *mut SSL) -> *mut SRTP_PROTECTION_PROFILE;
+}
diff --git a/vendor/openssl-sys/src/handwritten/ssl.rs b/vendor/openssl-sys/src/handwritten/ssl.rs
new file mode 100644
index 000000000..f179a04ab
--- /dev/null
+++ b/vendor/openssl-sys/src/handwritten/ssl.rs
@@ -0,0 +1,913 @@
+use super::super::*;
+use libc::*;
+
+pub enum SSL_METHOD {}
+pub enum SSL_CIPHER {}
+cfg_if! {
+    if #[cfg(any(ossl110, libressl280))] {
+        pub enum SSL_SESSION {}
+    } else if #[cfg(libressl251)] {
+        #[repr(C)]
+        pub struct SSL_SESSION {
+            ssl_version: c_int,
+            pub master_key_length: c_int,
+            pub master_key: [c_uchar; 48],
+            session_id_length: c_uint,
+            session_id: [c_uchar; SSL_MAX_SSL_SESSION_ID_LENGTH as usize],
+            sid_ctx_length: c_uint,
+            sid_ctx: [c_uchar; SSL_MAX_SID_CTX_LENGTH as usize],
+            peer: *mut X509,
+            verify_result: c_long,
+            timeout: c_long,
+            time: time_t,
+            pub references: c_int,
+            cipher: *const SSL_CIPHER,
+            cipher_id: c_long,
+            ciphers: *mut stack_st_SSL_CIPHER,
+            tlsext_hostname: *mut c_char,
+            tlsext_tick: *mut c_uchar,
+            tlsext_ticklen: size_t,
+            tlsext_tick_lifetime_int: c_long,
+            internal: *mut c_void,
+        }
+    } else if #[cfg(libressl)] {
+        #[repr(C)]
+        pub struct SSL_SESSION {
+            ssl_version: c_int,
+            pub master_key_length: c_int,
+            pub master_key: [c_uchar; 48],
+            session_id_length: c_uint,
+            session_id: [c_uchar; SSL_MAX_SSL_SESSION_ID_LENGTH as usize],
+            sid_ctx_length: c_uint,
+            sid_ctx: [c_uchar; SSL_MAX_SID_CTX_LENGTH as usize],
+            not_resumable: c_int,
+            sess_cert: *mut c_void,
+            peer: *mut X509,
+            verify_result: c_long,
+            timeout: c_long,
+            time: time_t,
+            pub references: c_int,
+            cipher: *const c_void,
+            cipher_id: c_ulong,
+            ciphers: *mut c_void,
+            ex_data: CRYPTO_EX_DATA,
+            prev: *mut c_void,
+            next: *mut c_void,
+            tlsext_hostname: *mut c_char,
+            tlsext_ecpointformatlist_length: size_t,
+            tlsext_ecpointformatlist: *mut u8,
+            tlsext_ellipticcurvelist_length: size_t,
+            tlsext_ellipticcurvelist: *mut u16,
+            tlsext_tick: *mut c_uchar,
+            tlsext_ticklen: size_t,
+            tlsext_tick_lifetime_hint: c_long,
+        }
+    } else {
+        #[repr(C)]
+        pub struct SSL_SESSION {
+            ssl_version: c_int,
+            key_arg_length: c_uint,
+            key_arg: [c_uchar; SSL_MAX_KEY_ARG_LENGTH as usize],
+            pub master_key_length: c_int,
+            pub master_key: [c_uchar; 48],
+            session_id_length: c_uint,
+            session_id: [c_uchar; SSL_MAX_SSL_SESSION_ID_LENGTH as usize],
+            sid_ctx_length: c_uint,
+            sid_ctx: [c_uchar; SSL_MAX_SID_CTX_LENGTH as usize],
+            #[cfg(not(osslconf = "OPENSSL_NO_KRB5"))]
+            krb5_client_princ_len: c_uint,
+            #[cfg(not(osslconf = "OPENSSL_NO_KRB5"))]
+            krb5_client_princ: [c_uchar; SSL_MAX_KRB5_PRINCIPAL_LENGTH as usize],
+            #[cfg(not(osslconf = "OPENSSL_NO_PSK"))]
+            psk_identity_hint: *mut c_char,
+            #[cfg(not(osslconf = "OPENSSL_NO_PSK"))]
+            psk_identity: *mut c_char,
+            not_resumable: c_int,
+            sess_cert: *mut c_void,
+            peer: *mut X509,
+            verify_result: c_long,
+            pub references: c_int,
+            timeout: c_long,
+            time: c_long,
+            compress_meth: c_uint,
+            cipher: *const c_void,
+            cipher_id: c_ulong,
+            ciphers: *mut c_void,
+            ex_data: CRYPTO_EX_DATA,
+            prev: *mut c_void,
+            next: *mut c_void,
+            #[cfg(not(osslconf = "OPENSSL_NO_TLSEXT"))]
+            tlsext_hostname: *mut c_char,
+            #[cfg(all(
+                not(osslconf = "OPENSSL_NO_TLSEXT"),
+                not(osslconf = "OPENSSL_NO_EC")
+            ))]
+            tlsext_ecpointformatlist_length: size_t,
+            #[cfg(all(
+                not(osslconf = "OPENSSL_NO_TLSEXT"),
+                not(osslconf = "OPENSSL_NO_EC")
+            ))]
+            tlsext_ecpointformatlist: *mut c_uchar,
+            #[cfg(all(
+                not(osslconf = "OPENSSL_NO_TLSEXT"),
+                not(osslconf = "OPENSSL_NO_EC")
+            ))]
+            tlsext_ellipticcurvelist_length: size_t,
+            #[cfg(all(
+                not(osslconf = "OPENSSL_NO_TLSEXT"),
+                not(osslconf = "OPENSSL_NO_EC")
+            ))]
+            tlsext_ellipticcurvelist: *mut c_uchar,
+            #[cfg(not(osslconf = "OPENSSL_NO_TLSEXT"))]
+            tlsext_tick: *mut c_uchar,
+            #[cfg(not(osslconf = "OPENSSL_NO_TLSEXT"))]
+            tlsext_ticklen: size_t,
+            #[cfg(not(osslconf = "OPENSSL_NO_TLSEXT"))]
+            tlsext_tick_lifetime_hint: c_long,
+            #[cfg(not(osslconf = "OPENSSL_NO_SRP"))]
+            srp_username: *mut c_char,
+        }
+    }
+}
+
+stack!(stack_st_SSL_CIPHER);
+
+#[repr(C)]
+pub struct SRTP_PROTECTION_PROFILE {
+    pub name: *const c_char,
+    pub id: c_ulong,
+}
+
+stack!(stack_st_SRTP_PROTECTION_PROFILE);
+
+pub type tls_session_ticket_ext_cb_fn =
+    Option<unsafe extern "C" fn(*mut SSL, *const c_uchar, c_int, *mut c_void) -> c_int>;
+pub type tls_session_secret_cb_fn = Option<
+    unsafe extern "C" fn(
+        *mut SSL,
+        *mut c_void,
+        *mut c_int,
+        *mut stack_st_SSL_CIPHER,
+        *mut *mut SSL_CIPHER,
+        *mut c_void,
+    ) -> c_int,
+>;
+
+#[cfg(ossl111)]
+pub type SSL_custom_ext_add_cb_ex = Option<
+    unsafe extern "C" fn(
+        ssl: *mut SSL,
+        ext_type: c_uint,
+        context: c_uint,
+        out: *mut *const c_uchar,
+        outlen: *mut size_t,
+        x: *mut X509,
+        chainidx: size_t,
+        al: *mut c_int,
+        add_arg: *mut c_void,
+    ) -> c_int,
+>;
+
+#[cfg(ossl111)]
+pub type SSL_custom_ext_free_cb_ex = Option<
+    unsafe extern "C" fn(
+        ssl: *mut SSL,
+        ext_type: c_uint,
+        context: c_uint,
+        out: *const c_uchar,
+        add_arg: *mut c_void,
+    ),
+>;
+
+#[cfg(ossl111)]
+pub type SSL_custom_ext_parse_cb_ex = Option<
+    unsafe extern "C" fn(
+        ssl: *mut SSL,
+        ext_type: c_uint,
+        context: c_uint,
+        input: *const c_uchar,
+        inlen: size_t,
+        x: *mut X509,
+        chainidx: size_t,
+        al: *mut c_int,
+        parse_arg: *mut c_void,
+    ) -> c_int,
+>;
+
+cfg_if! {
+    if #[cfg(ossl300)] {
+        extern "C" {
+            pub fn SSL_CTX_get_options(ctx: *const SSL_CTX) -> u64;
+            pub fn SSL_CTX_set_options(ctx: *mut SSL_CTX, op: u64) -> u64;
+            pub fn SSL_CTX_clear_options(ctx: *mut SSL_CTX, op: u64) -> u64;
+        }
+    } else if #[cfg(ossl110)] {
+        extern "C" {
+            pub fn SSL_CTX_get_options(ctx: *const SSL_CTX) -> c_ulong;
+            pub fn SSL_CTX_set_options(ctx: *mut SSL_CTX, op: c_ulong) -> c_ulong;
+            pub fn SSL_CTX_clear_options(ctx: *mut SSL_CTX, op: c_ulong) -> c_ulong;
+        }
+    }
+}
+
+pub type GEN_SESSION_CB =
+    Option<unsafe extern "C" fn(*const SSL, *mut c_uchar, *mut c_uint) -> c_int>;
+
+extern "C" {
+    pub fn SSL_CTX_sess_set_new_cb(
+        ctx: *mut SSL_CTX,
+        new_session_cb: Option<unsafe extern "C" fn(*mut SSL, *mut SSL_SESSION) -> c_int>,
+    );
+    pub fn SSL_CTX_sess_set_remove_cb(
+        ctx: *mut SSL_CTX,
+        remove_session_cb: Option<unsafe extern "C" fn(*mut SSL_CTX, *mut SSL_SESSION)>,
+    );
+}
+cfg_if! {
+    // const change in passed function pointer signature
+    if #[cfg(any(ossl110, libressl280))] {
+        extern "C" {
+            pub fn SSL_CTX_sess_set_get_cb(
+                ctx: *mut SSL_CTX,
+                get_session_cb: Option<
+                    unsafe extern "C" fn(*mut SSL, *const c_uchar, c_int, *mut c_int) -> *mut SSL_SESSION,
+                >,
+            );
+        }
+    } else {
+        extern "C" {
+            pub fn SSL_CTX_sess_set_get_cb(
+                ctx: *mut SSL_CTX,
+                get_session_cb: Option<
+                    unsafe extern "C" fn(*mut SSL, *mut c_uchar, c_int, *mut c_int) -> *mut SSL_SESSION,
+                >,
+            );
+        }
+    }
+}
+extern "C" {
+    // FIXME change to unsafe extern "C" fn
+    pub fn SSL_CTX_set_cookie_generate_cb(
+        s: *mut SSL_CTX,
+        cb: Option<
+            extern "C" fn(ssl: *mut SSL, cookie: *mut c_uchar, cookie_len: *mut c_uint) -> c_int,
+        >,
+    );
+}
+
+cfg_if! {
+    // const change in passed function pointer signature
+    if #[cfg(any(ossl110, libressl280))] {
+        extern "C" {
+            pub fn SSL_CTX_set_cookie_verify_cb(
+                s: *mut SSL_CTX,
+                cb: Option<
+                    extern "C" fn(ssl: *mut SSL, cookie: *const c_uchar, cookie_len: c_uint) -> c_int,
+                >,
+            );
+        }
+    } else {
+        extern "C" {
+            pub fn SSL_CTX_set_cookie_verify_cb(
+                s: *mut SSL_CTX,
+                cb: Option<extern "C" fn(ssl: *mut SSL, cookie: *mut c_uchar, cookie_len: c_uint) -> c_int>,
+            );
+        }
+    }
+}
+
+extern "C" {
+    #[cfg(ossl111)]
+    pub fn SSL_CTX_set_stateless_cookie_generate_cb(
+        s: *mut SSL_CTX,
+        cb: Option<
+            unsafe extern "C" fn(
+                ssl: *mut SSL,
+                cookie: *mut c_uchar,
+                cookie_len: *mut size_t,
+            ) -> c_int,
+        >,
+    );
+    #[cfg(ossl111)]
+    pub fn SSL_CTX_set_stateless_cookie_verify_cb(
+        s: *mut SSL_CTX,
+        cb: Option<
+            unsafe extern "C" fn(
+                ssl: *mut SSL,
+                cookie: *const c_uchar,
+                cookie_len: size_t,
+            ) -> c_int,
+        >,
+    );
+
+    pub fn SSL_CTX_set_next_protos_advertised_cb(
+        ssl: *mut SSL_CTX,
+        cb: extern "C" fn(
+            ssl: *mut SSL,
+            out: *mut *const c_uchar,
+            outlen: *mut c_uint,
+            arg: *mut c_void,
+        ) -> c_int,
+        arg: *mut c_void,
+    );
+    pub fn SSL_CTX_set_next_proto_select_cb(
+        ssl: *mut SSL_CTX,
+        cb: extern "C" fn(
+            ssl: *mut SSL,
+            out: *mut *mut c_uchar,
+            outlen: *mut c_uchar,
+            inbuf: *const c_uchar,
+            inlen: c_uint,
+            arg: *mut c_void,
+        ) -> c_int,
+        arg: *mut c_void,
+    );
+    pub fn SSL_get0_next_proto_negotiated(
+        s: *const SSL,
+        data: *mut *const c_uchar,
+        len: *mut c_uint,
+    );
+
+    pub fn SSL_select_next_proto(
+        out: *mut *mut c_uchar,
+        outlen: *mut c_uchar,
+        inbuf: *const c_uchar,
+        inlen: c_uint,
+        client: *const c_uchar,
+        client_len: c_uint,
+    ) -> c_int;
+}
+
+extern "C" {
+    #[cfg(any(ossl102, libressl261))]
+    pub fn SSL_CTX_set_alpn_protos(s: *mut SSL_CTX, data: *const c_uchar, len: c_uint) -> c_int;
+    #[cfg(any(ossl102, libressl261))]
+    pub fn SSL_set_alpn_protos(s: *mut SSL, data: *const c_uchar, len: c_uint) -> c_int;
+    #[cfg(any(ossl102, libressl261))]
+    #[link_name = "SSL_CTX_set_alpn_select_cb"]
+    pub fn SSL_CTX_set_alpn_select_cb__fixed_rust(
+        ssl: *mut SSL_CTX,
+        cb: Option<
+            unsafe extern "C" fn(
+                ssl: *mut SSL,
+                out: *mut *const c_uchar,
+                outlen: *mut c_uchar,
+                inbuf: *const c_uchar,
+                inlen: c_uint,
+                arg: *mut c_void,
+            ) -> c_int,
+        >,
+        arg: *mut c_void,
+    );
+    #[cfg(any(ossl102, libressl261))]
+    pub fn SSL_get0_alpn_selected(s: *const SSL, data: *mut *const c_uchar, len: *mut c_uint);
+}
+
+#[cfg(not(osslconf = "OPENSSL_NO_PSK"))]
+extern "C" {
+    pub fn SSL_CTX_set_psk_client_callback(
+        ssl: *mut SSL_CTX,
+        psk_client_cb: Option<
+            extern "C" fn(
+                *mut SSL,
+                *const c_char,
+                *mut c_char,
+                c_uint,
+                *mut c_uchar,
+                c_uint,
+            ) -> c_uint,
+        >,
+    );
+    pub fn SSL_CTX_set_psk_server_callback(
+        ssl: *mut SSL_CTX,
+        psk_server_cb: Option<
+            extern "C" fn(*mut SSL, *const c_char, *mut c_uchar, c_uint) -> c_uint,
+        >,
+    );
+    pub fn SSL_get_psk_identity_hint(ssl: *const SSL) -> *const c_char;
+    pub fn SSL_get_psk_identity(ssl: *const SSL) -> *const c_char;
+}
+
+extern "C" {
+    #[cfg(ossl111)]
+    pub fn SSL_CTX_add_custom_ext(
+        ctx: *mut SSL_CTX,
+        ext_type: c_uint,
+        context: c_uint,
+        add_cb: SSL_custom_ext_add_cb_ex,
+        free_cb: SSL_custom_ext_free_cb_ex,
+        add_arg: *mut c_void,
+        parse_cb: SSL_custom_ext_parse_cb_ex,
+        parse_arg: *mut c_void,
+    ) -> c_int;
+
+    #[cfg(ossl102)]
+    pub fn SSL_extension_supported(ext_type: c_uint) -> c_int;
+}
+
+#[cfg(ossl111)]
+pub type SSL_CTX_keylog_cb_func =
+    Option<unsafe extern "C" fn(ssl: *const SSL, line: *const c_char)>;
+
+extern "C" {
+    #[cfg(ossl111)]
+    pub fn SSL_CTX_set_keylog_callback(ctx: *mut SSL_CTX, cb: SSL_CTX_keylog_cb_func);
+
+    #[cfg(any(ossl111, libressl340))]
+    pub fn SSL_CTX_set_max_early_data(ctx: *mut SSL_CTX, max_early_data: u32) -> c_int;
+    #[cfg(any(ossl111, libressl340))]
+    pub fn SSL_CTX_get_max_early_data(ctx: *const SSL_CTX) -> u32;
+    #[cfg(any(ossl111, libressl340))]
+    pub fn SSL_set_max_early_data(ctx: *mut SSL, max_early_data: u32) -> c_int;
+    #[cfg(any(ossl111, libressl340))]
+    pub fn SSL_get_max_early_data(ctx: *const SSL) -> u32;
+
+    pub fn SSL_get_finished(s: *const SSL, buf: *mut c_void, count: size_t) -> size_t;
+    pub fn SSL_get_peer_finished(s: *const SSL, buf: *mut c_void, count: size_t) -> size_t;
+
+    pub fn SSL_CTX_get_verify_mode(ctx: *const SSL_CTX) -> c_int;
+    pub fn SSL_get_verify_mode(s: *const SSL) -> c_int;
+}
+
+const_ptr_api! {
+    extern "C" {
+        #[cfg(ossl110)]
+        pub fn SSL_is_init_finished(s: #[const_ptr_if(ossl111)] SSL) -> c_int;
+    }
+}
+
+cfg_if! {
+    if #[cfg(libressl261)] {
+        extern "C" {
+            pub fn SSL_CTX_set_min_proto_version(ctx: *mut SSL_CTX, version: u16) -> c_int;
+            pub fn SSL_CTX_set_max_proto_version(ctx: *mut SSL_CTX, version: u16) -> c_int;
+            pub fn SSL_set_min_proto_version(s: *mut SSL, version: u16) -> c_int;
+            pub fn SSL_set_max_proto_version(s: *mut SSL, version: u16) -> c_int;
+        }
+    }
+}
+
+cfg_if! {
+    if #[cfg(libressl270)] {
+        extern "C" {
+            pub fn SSL_CTX_get_min_proto_version(ctx: *mut SSL_CTX) -> c_int;
+            pub fn SSL_CTX_get_max_proto_version(ctx: *mut SSL_CTX) -> c_int;
+            pub fn SSL_get_min_proto_version(s: *mut SSL) -> c_int;
+            pub fn SSL_get_max_proto_version(s: *mut SSL) -> c_int;
+        }
+    }
+}
+
+extern "C" {
+    pub fn SSL_CTX_set_cipher_list(ssl: *mut SSL_CTX, s: *const c_char) -> c_int;
+    pub fn SSL_CTX_new(method: *const SSL_METHOD) -> *mut SSL_CTX;
+    pub fn SSL_CTX_free(ctx: *mut SSL_CTX);
+    #[cfg(any(ossl110, libressl273))]
+    pub fn SSL_CTX_up_ref(x: *mut SSL_CTX) -> c_int;
+    pub fn SSL_CTX_get_cert_store(ctx: *const SSL_CTX) -> *mut X509_STORE;
+    pub fn SSL_CTX_set_cert_store(ctx: *mut SSL_CTX, store: *mut X509_STORE);
+
+    pub fn SSL_get_current_cipher(ssl: *const SSL) -> *const SSL_CIPHER;
+    pub fn SSL_CIPHER_get_bits(cipher: *const SSL_CIPHER, alg_bits: *mut c_int) -> c_int;
+}
+const_ptr_api! {
+    extern "C" {
+        pub fn SSL_CIPHER_get_version(cipher: *const SSL_CIPHER) -> #[const_ptr_if(any(ossl110, libressl280))] c_char;
+    }
+}
+extern "C" {
+    #[cfg(ossl111)]
+    pub fn SSL_CIPHER_get_handshake_digest(cipher: *const SSL_CIPHER) -> *const EVP_MD;
+    pub fn SSL_CIPHER_get_name(cipher: *const SSL_CIPHER) -> *const c_char;
+    #[cfg(ossl111)]
+    pub fn SSL_CIPHER_standard_name(cipher: *const SSL_CIPHER) -> *const c_char;
+    #[cfg(ossl111)]
+    pub fn OPENSSL_cipher_name(rfc_name: *const c_char) -> *const c_char;
+
+    pub fn SSL_pending(ssl: *const SSL) -> c_int;
+    pub fn SSL_set_bio(ssl: *mut SSL, rbio: *mut BIO, wbio: *mut BIO);
+    pub fn SSL_get_rbio(ssl: *const SSL) -> *mut BIO;
+    pub fn SSL_get_wbio(ssl: *const SSL) -> *mut BIO;
+    #[cfg(any(ossl111, libressl340))]
+    pub fn SSL_CTX_set_ciphersuites(ctx: *mut SSL_CTX, str: *const c_char) -> c_int;
+    #[cfg(any(ossl111, libressl340))]
+    pub fn SSL_set_ciphersuites(ssl: *mut SSL, str: *const c_char) -> c_int;
+    pub fn SSL_set_cipher_list(ssl: *mut SSL, s: *const c_char) -> c_int;
+    pub fn SSL_set_ssl_method(s: *mut SSL, method: *const SSL_METHOD) -> c_int;
+    pub fn SSL_set_verify(
+        ssl: *mut SSL,
+        mode: c_int,
+        // FIXME should be unsafe
+        verify_callback: Option<extern "C" fn(c_int, *mut X509_STORE_CTX) -> c_int>,
+    );
+    pub fn SSL_CTX_use_PrivateKey(ctx: *mut SSL_CTX, key: *mut EVP_PKEY) -> c_int;
+    pub fn SSL_CTX_use_certificate(ctx: *mut SSL_CTX, cert: *mut X509) -> c_int;
+
+    pub fn SSL_CTX_use_PrivateKey_file(
+        ctx: *mut SSL_CTX,
+        key_file: *const c_char,
+        file_type: c_int,
+    ) -> c_int;
+    pub fn SSL_CTX_use_certificate_file(
+        ctx: *mut SSL_CTX,
+        cert_file: *const c_char,
+        file_type: c_int,
+    ) -> c_int;
+    pub fn SSL_CTX_use_certificate_chain_file(
+        ctx: *mut SSL_CTX,
+        cert_chain_file: *const c_char,
+    ) -> c_int;
+    pub fn SSL_use_PrivateKey_file(ssl: *mut SSL, file: *const c_char, type_: c_int) -> c_int;
+    pub fn SSL_use_PrivateKey(ssl: *mut SSL, pkey: *mut EVP_PKEY) -> c_int;
+    pub fn SSL_use_certificate(ssl: *mut SSL, x: *mut X509) -> c_int;
+    #[cfg(any(ossl110, libressl332))]
+    pub fn SSL_use_certificate_chain_file(ssl: *mut SSL, file: *const c_char) -> c_int;
+    pub fn SSL_set_client_CA_list(s: *mut SSL, name_list: *mut stack_st_X509_NAME);
+    pub fn SSL_add_client_CA(ssl: *mut SSL, x: *mut X509) -> c_int;
+    pub fn SSL_load_client_CA_file(file: *const c_char) -> *mut stack_st_X509_NAME;
+
+    #[cfg(not(ossl110))]
+    pub fn SSL_load_error_strings();
+    pub fn SSL_state_string(ssl: *const SSL) -> *const c_char;
+    pub fn SSL_state_string_long(ssl: *const SSL) -> *const c_char;
+
+    pub fn SSL_SESSION_get_time(s: *const SSL_SESSION) -> c_long;
+    pub fn SSL_SESSION_get_timeout(s: *const SSL_SESSION) -> c_long;
+    #[cfg(any(ossl110, libressl270))]
+    pub fn SSL_SESSION_get_protocol_version(s: *const SSL_SESSION) -> c_int;
+
+    #[cfg(any(ossl111, libressl340))]
+    pub fn SSL_SESSION_set_max_early_data(ctx: *mut SSL_SESSION, max_early_data: u32) -> c_int;
+    #[cfg(any(ossl111, libressl340))]
+    pub fn SSL_SESSION_get_max_early_data(ctx: *const SSL_SESSION) -> u32;
+
+    pub fn SSL_SESSION_get_id(s: *const SSL_SESSION, len: *mut c_uint) -> *const c_uchar;
+    #[cfg(any(ossl110, libressl273))]
+    pub fn SSL_SESSION_up_ref(ses: *mut SSL_SESSION) -> c_int;
+    pub fn SSL_SESSION_free(s: *mut SSL_SESSION);
+}
+const_ptr_api! {
+    extern "C" {
+        pub fn i2d_SSL_SESSION(s: #[const_ptr_if(ossl300)] SSL_SESSION, pp: *mut *mut c_uchar) -> c_int;
+    }
+}
+extern "C" {
+    pub fn SSL_set_session(ssl: *mut SSL, session: *mut SSL_SESSION) -> c_int;
+    pub fn SSL_CTX_add_session(ctx: *mut SSL_CTX, session: *mut SSL_SESSION) -> c_int;
+    pub fn SSL_CTX_remove_session(ctx: *mut SSL_CTX, session: *mut SSL_SESSION) -> c_int;
+    pub fn d2i_SSL_SESSION(
+        a: *mut *mut SSL_SESSION,
+        pp: *mut *const c_uchar,
+        len: c_long,
+    ) -> *mut SSL_SESSION;
+
+    #[cfg(not(ossl300))]
+    pub fn SSL_get_peer_certificate(ssl: *const SSL) -> *mut X509;
+    #[cfg(ossl300)]
+    pub fn SSL_get1_peer_certificate(ssl: *const SSL) -> *mut X509;
+
+    pub fn SSL_get_peer_cert_chain(ssl: *const SSL) -> *mut stack_st_X509;
+
+    pub fn SSL_CTX_set_verify(
+        ctx: *mut SSL_CTX,
+        mode: c_int,
+        verify_callback: Option<extern "C" fn(c_int, *mut X509_STORE_CTX) -> c_int>,
+    );
+    pub fn SSL_CTX_set_verify_depth(ctx: *mut SSL_CTX, depth: c_int);
+
+    #[cfg(any(ossl111, libressl340))]
+    pub fn SSL_CTX_set_post_handshake_auth(ctx: *mut SSL_CTX, val: c_int);
+
+    pub fn SSL_CTX_check_private_key(ctx: *const SSL_CTX) -> c_int;
+
+    pub fn SSL_CTX_set_session_id_context(
+        ssl: *mut SSL_CTX,
+        sid_ctx: *const c_uchar,
+        sid_ctx_len: c_uint,
+    ) -> c_int;
+
+    pub fn SSL_new(ctx: *mut SSL_CTX) -> *mut SSL;
+
+    #[cfg(any(ossl102, libressl261))]
+    pub fn SSL_CTX_get0_param(ctx: *mut SSL_CTX) -> *mut X509_VERIFY_PARAM;
+
+    #[cfg(any(ossl102, libressl261))]
+    pub fn SSL_get0_param(ssl: *mut SSL) -> *mut X509_VERIFY_PARAM;
+}
+
+#[cfg(ossl111)]
+pub type SSL_client_hello_cb_fn =
+    Option<unsafe extern "C" fn(s: *mut SSL, al: *mut c_int, arg: *mut c_void) -> c_int>;
+extern "C" {
+    #[cfg(ossl111)]
+    pub fn SSL_CTX_set_client_hello_cb(
+        c: *mut SSL_CTX,
+        cb: SSL_client_hello_cb_fn,
+        arg: *mut c_void,
+    );
+    #[cfg(ossl111)]
+    pub fn SSL_client_hello_isv2(s: *mut SSL) -> c_int;
+    #[cfg(ossl111)]
+    pub fn SSL_client_hello_get0_legacy_version(s: *mut SSL) -> c_uint;
+    #[cfg(ossl111)]
+    pub fn SSL_client_hello_get0_random(s: *mut SSL, out: *mut *const c_uchar) -> size_t;
+    #[cfg(ossl111)]
+    pub fn SSL_client_hello_get0_session_id(s: *mut SSL, out: *mut *const c_uchar) -> size_t;
+    #[cfg(ossl111)]
+    pub fn SSL_client_hello_get0_ciphers(s: *mut SSL, out: *mut *const c_uchar) -> size_t;
+    #[cfg(ossl111)]
+    pub fn SSL_client_hello_get0_compression_methods(
+        s: *mut SSL,
+        out: *mut *const c_uchar,
+    ) -> size_t;
+    #[cfg(ossl111)]
+    pub fn SSL_client_hello_get1_extensions_present(
+        s: *mut SSL,
+        out: *mut *mut c_int,
+        outlen: *mut size_t,
+    ) -> c_int;
+    #[cfg(ossl111)]
+    pub fn SSL_client_hello_get0_ext(
+        s: *mut SSL,
+        type_: c_uint,
+        out: *mut *const c_uchar,
+        outlen: *mut size_t,
+    ) -> c_int;
+
+    pub fn SSL_free(ssl: *mut SSL);
+    pub fn SSL_accept(ssl: *mut SSL) -> c_int;
+    #[cfg(ossl111)]
+    pub fn SSL_stateless(s: *mut SSL) -> c_int;
+    pub fn SSL_connect(ssl: *mut SSL) -> c_int;
+    pub fn SSL_read(ssl: *mut SSL, buf: *mut c_void, num: c_int) -> c_int;
+    pub fn SSL_peek(ssl: *mut SSL, buf: *mut c_void, num: c_int) -> c_int;
+    #[cfg(any(ossl111, libressl340))]
+    pub fn SSL_read_early_data(
+        s: *mut SSL,
+        buf: *mut c_void,
+        num: size_t,
+        readbytes: *mut size_t,
+    ) -> c_int;
+}
+
+extern "C" {
+    pub fn SSL_write(ssl: *mut SSL, buf: *const c_void, num: c_int) -> c_int;
+    #[cfg(any(ossl111, libressl340))]
+    pub fn SSL_write_early_data(
+        s: *mut SSL,
+        buf: *const c_void,
+        num: size_t,
+        written: *mut size_t,
+    ) -> c_int;
+    pub fn SSL_ctrl(ssl: *mut SSL, cmd: c_int, larg: c_long, parg: *mut c_void) -> c_long;
+    pub fn SSL_CTX_ctrl(ctx: *mut SSL_CTX, cmd: c_int, larg: c_long, parg: *mut c_void) -> c_long;
+    #[link_name = "SSL_CTX_callback_ctrl"]
+    pub fn SSL_CTX_callback_ctrl__fixed_rust(
+        ctx: *mut SSL_CTX,
+        cmd: c_int,
+        fp: Option<unsafe extern "C" fn()>,
+    ) -> c_long;
+}
+
+cfg_if! {
+    if #[cfg(any(ossl110, libressl291))] {
+        extern "C" {
+            pub fn TLS_method() -> *const SSL_METHOD;
+
+            pub fn DTLS_method() -> *const SSL_METHOD;
+
+            pub fn TLS_server_method() -> *const SSL_METHOD;
+
+            pub fn TLS_client_method() -> *const SSL_METHOD;
+        }
+    } else {
+        extern "C" {
+            #[cfg(not(osslconf = "OPENSSL_NO_SSL3_METHOD"))]
+            pub fn SSLv3_method() -> *const SSL_METHOD;
+
+            pub fn SSLv23_method() -> *const SSL_METHOD;
+
+            pub fn SSLv23_client_method() -> *const SSL_METHOD;
+
+            pub fn SSLv23_server_method() -> *const SSL_METHOD;
+
+            pub fn TLSv1_method() -> *const SSL_METHOD;
+
+            pub fn TLSv1_1_method() -> *const SSL_METHOD;
+
+            pub fn TLSv1_2_method() -> *const SSL_METHOD;
+
+            pub fn DTLSv1_method() -> *const SSL_METHOD;
+
+            #[cfg(ossl102)]
+            pub fn DTLSv1_2_method() -> *const SSL_METHOD;
+        }
+    }
+}
+
+extern "C" {
+    pub fn SSL_get_error(ssl: *const SSL, ret: c_int) -> c_int;
+    pub fn SSL_get_version(ssl: *const SSL) -> *const c_char;
+
+    pub fn SSL_do_handshake(ssl: *mut SSL) -> c_int;
+    pub fn SSL_shutdown(ssl: *mut SSL) -> c_int;
+
+    pub fn SSL_CTX_set_client_CA_list(ctx: *mut SSL_CTX, list: *mut stack_st_X509_NAME);
+
+    pub fn SSL_CTX_add_client_CA(ctx: *mut SSL_CTX, cacert: *mut X509) -> c_int;
+
+    pub fn SSL_CTX_set_default_verify_paths(ctx: *mut SSL_CTX) -> c_int;
+    pub fn SSL_CTX_load_verify_locations(
+        ctx: *mut SSL_CTX,
+        CAfile: *const c_char,
+        CApath: *const c_char,
+    ) -> c_int;
+}
+
+const_ptr_api! {
+    extern "C" {
+        pub fn SSL_get_ssl_method(ssl: #[const_ptr_if(ossl111b)] SSL) -> *const SSL_METHOD;
+    }
+}
+
+extern "C" {
+    pub fn SSL_set_connect_state(s: *mut SSL);
+    pub fn SSL_set_accept_state(s: *mut SSL);
+
+    #[cfg(not(ossl110))]
+    pub fn SSL_library_init() -> c_int;
+
+    pub fn SSL_CIPHER_description(
+        cipher: *const SSL_CIPHER,
+        buf: *mut c_char,
+        size: c_int,
+    ) -> *mut c_char;
+
+    pub fn SSL_get_certificate(ssl: *const SSL) -> *mut X509;
+}
+const_ptr_api! {
+    extern "C" {
+        pub fn SSL_get_privatekey(ssl: #[const_ptr_if(any(ossl102, libressl280))] SSL) -> *mut EVP_PKEY;
+    }
+}
+
+extern "C" {
+    #[cfg(any(ossl102, libressl270))]
+    pub fn SSL_CTX_get0_certificate(ctx: *const SSL_CTX) -> *mut X509;
+    #[cfg(any(ossl102, libressl340))]
+    pub fn SSL_CTX_get0_privatekey(ctx: *const SSL_CTX) -> *mut EVP_PKEY;
+
+    pub fn SSL_set_shutdown(ss: *mut SSL, mode: c_int);
+    pub fn SSL_get_shutdown(ssl: *const SSL) -> c_int;
+    pub fn SSL_version(ssl: *const SSL) -> c_int;
+    pub fn SSL_get_session(s: *const SSL) -> *mut SSL_SESSION;
+    pub fn SSL_get_SSL_CTX(ssl: *const SSL) -> *mut SSL_CTX;
+    pub fn SSL_set_SSL_CTX(ssl: *mut SSL, ctx: *mut SSL_CTX) -> *mut SSL_CTX;
+
+    pub fn SSL_get_verify_result(ssl: *const SSL) -> c_long;
+    #[cfg(ossl110)]
+    pub fn SSL_get0_verified_chain(ssl: *const SSL) -> *mut stack_st_X509;
+
+    #[cfg(any(ossl110, libressl270))]
+    pub fn SSL_get_client_random(ssl: *const SSL, out: *mut c_uchar, len: size_t) -> size_t;
+    #[cfg(any(ossl110, libressl270))]
+    pub fn SSL_get_server_random(ssl: *const SSL, out: *mut c_uchar, len: size_t) -> size_t;
+    #[cfg(any(ossl110, libressl273))]
+    pub fn SSL_SESSION_get_master_key(
+        session: *const SSL_SESSION,
+        out: *mut c_uchar,
+        outlen: size_t,
+    ) -> size_t;
+}
+
+extern "C" {
+    #[cfg(not(ossl110))]
+    pub fn SSL_get_ex_new_index(
+        argl: c_long,
+        argp: *mut c_void,
+        new_func: Option<CRYPTO_EX_new>,
+        dup_func: Option<CRYPTO_EX_dup>,
+        free_func: Option<CRYPTO_EX_free>,
+    ) -> c_int;
+
+    pub fn SSL_set_ex_data(ssl: *mut SSL, idx: c_int, data: *mut c_void) -> c_int;
+    pub fn SSL_get_ex_data(ssl: *const SSL, idx: c_int) -> *mut c_void;
+
+    #[cfg(not(ossl110))]
+    pub fn SSL_CTX_get_ex_new_index(
+        argl: c_long,
+        argp: *mut c_void,
+        new_func: Option<CRYPTO_EX_new>,
+        dup_func: Option<CRYPTO_EX_dup>,
+        free_func: Option<CRYPTO_EX_free>,
+    ) -> c_int;
+
+    pub fn SSL_CTX_set_ex_data(ctx: *mut SSL_CTX, idx: c_int, data: *mut c_void) -> c_int;
+    pub fn SSL_CTX_get_ex_data(ctx: *const SSL_CTX, idx: c_int) -> *mut c_void;
+
+    pub fn SSL_get_ex_data_X509_STORE_CTX_idx() -> c_int;
+}
+
+extern "C" {
+    #[link_name = "SSL_CTX_set_tmp_dh_callback"]
+    pub fn SSL_CTX_set_tmp_dh_callback__fixed_rust(
+        ctx: *mut SSL_CTX,
+        dh: Option<
+            unsafe extern "C" fn(ssl: *mut SSL, is_export: c_int, keylength: c_int) -> *mut DH,
+        >,
+    );
+    #[link_name = "SSL_set_tmp_dh_callback"]
+    pub fn SSL_set_tmp_dh_callback__fixed_rust(
+        ctx: *mut SSL,
+        dh: Option<
+            unsafe extern "C" fn(ssl: *mut SSL, is_export: c_int, keylength: c_int) -> *mut DH,
+        >,
+    );
+    #[cfg(not(ossl110))]
+    #[link_name = "SSL_CTX_set_tmp_ecdh_callback"]
+    pub fn SSL_CTX_set_tmp_ecdh_callback__fixed_rust(
+        ctx: *mut SSL_CTX,
+        ecdh: Option<
+            unsafe extern "C" fn(ssl: *mut SSL, is_export: c_int, keylength: c_int) -> *mut EC_KEY,
+        >,
+    );
+    #[cfg(not(ossl110))]
+    #[link_name = "SSL_set_tmp_ecdh_callback"]
+    pub fn SSL_set_tmp_ecdh_callback__fixed_rust(
+        ssl: *mut SSL,
+        ecdh: Option<
+            unsafe extern "C" fn(ssl: *mut SSL, is_export: c_int, keylength: c_int) -> *mut EC_KEY,
+        >,
+    );
+}
+
+cfg_if! {
+    if #[cfg(libressl)] {
+        extern "C" {
+            pub fn SSL_get_current_compression(ssl: *mut SSL) -> *const libc::c_void;
+        }
+    } else if #[cfg(not(osslconf = "OPENSSL_NO_COMP"))] {
+        const_ptr_api! {
+            extern "C" {
+                pub fn SSL_get_current_compression(ssl: #[const_ptr_if(ossl111b)] SSL) -> *const COMP_METHOD;
+            }
+        }
+    }
+}
+cfg_if! {
+    if #[cfg(libressl)] {
+        extern "C" {
+            pub fn SSL_COMP_get_name(comp: *const libc::c_void) -> *const c_char;
+        }
+    } else if #[cfg(not(osslconf = "OPENSSL_NO_COMP"))] {
+        extern "C" {
+            pub fn SSL_COMP_get_name(comp: *const COMP_METHOD) -> *const c_char;
+        }
+    }
+}
+
+#[cfg(not(osslconf = "OPENSSL_NO_COMP"))]
+extern "C" {
+    #[cfg(ossl110)]
+    pub fn COMP_get_type(meth: *const COMP_METHOD) -> i32;
+}
+
+extern "C" {
+    #[cfg(any(ossl110, libressl270))]
+    pub fn SSL_CIPHER_get_cipher_nid(c: *const SSL_CIPHER) -> c_int;
+    #[cfg(any(ossl110, libressl270))]
+    pub fn SSL_CIPHER_get_digest_nid(c: *const SSL_CIPHER) -> c_int;
+}
+
+const_ptr_api! {
+    extern "C" {
+        #[cfg(ossl110)]
+        pub fn SSL_session_reused(ssl: #[const_ptr_if(ossl111c)] SSL) -> c_int;
+    }
+}
+
+const_ptr_api! {
+    extern "C" {
+        #[cfg(any(ossl102, libressl273))]
+        pub fn SSL_is_server(s: #[const_ptr_if(any(ossl110f, libressl273))] SSL) -> c_int;
+    }
+}
+
+extern "C" {
+    #[cfg(ossl110)]
+    pub fn OPENSSL_init_ssl(opts: u64, settings: *const OPENSSL_INIT_SETTINGS) -> c_int;
+}
+
+extern "C" {
+    #[cfg(ossl111)]
+    pub fn SSL_CTX_set_num_tickets(ctx: *mut SSL_CTX, num_tickets: size_t) -> c_int;
+
+    #[cfg(ossl111)]
+    pub fn SSL_set_num_tickets(s: *mut SSL, num_tickets: size_t) -> c_int;
+
+    #[cfg(ossl111)]
+    pub fn SSL_CTX_get_num_tickets(ctx: *const SSL_CTX) -> size_t;
+
+    #[cfg(ossl111)]
+    pub fn SSL_get_num_tickets(s: *const SSL) -> size_t;
+}
diff --git a/vendor/openssl-sys/src/handwritten/stack.rs b/vendor/openssl-sys/src/handwritten/stack.rs
new file mode 100644
index 000000000..7f2feef6d
--- /dev/null
+++ b/vendor/openssl-sys/src/handwritten/stack.rs
@@ -0,0 +1,45 @@
+use libc::*;
+
+cfg_if! {
+    if #[cfg(ossl110)] {
+        pub enum OPENSSL_STACK {}
+    } else {
+        #[repr(C)]
+        pub struct _STACK {
+            pub num: c_int,
+            pub data: *mut *mut c_char,
+            pub sorted: c_int,
+            pub num_alloc: c_int,
+            pub comp: Option<unsafe extern "C" fn(*const c_void, *const c_void) -> c_int>,
+        }
+    }
+}
+
+cfg_if! {
+    if #[cfg(ossl110)] {
+        extern "C" {
+            pub fn OPENSSL_sk_num(stack: *const OPENSSL_STACK) -> c_int;
+            pub fn OPENSSL_sk_value(stack: *const OPENSSL_STACK, idx: c_int) -> *mut c_void;
+
+            pub fn OPENSSL_sk_new_null() -> *mut OPENSSL_STACK;
+            pub fn OPENSSL_sk_free(st: *mut OPENSSL_STACK);
+            pub fn OPENSSL_sk_pop_free(
+                st: *mut OPENSSL_STACK,
+                free: Option<unsafe extern "C" fn(*mut c_void)>,
+            );
+            pub fn OPENSSL_sk_push(st: *mut OPENSSL_STACK, data: *const c_void) -> c_int;
+            pub fn OPENSSL_sk_pop(st: *mut OPENSSL_STACK) -> *mut c_void;
+        }
+    } else {
+        extern "C" {
+            pub fn sk_num(st: *const _STACK) -> c_int;
+            pub fn sk_value(st: *const _STACK, n: c_int) -> *mut c_void;
+
+            pub fn sk_new_null() -> *mut _STACK;
+            pub fn sk_free(st: *mut _STACK);
+            pub fn sk_pop_free(st: *mut _STACK, free: Option<unsafe extern "C" fn(*mut c_void)>);
+            pub fn sk_push(st: *mut _STACK, data: *mut c_void) -> c_int;
+            pub fn sk_pop(st: *mut _STACK) -> *mut c_void;
+        }
+    }
+}
diff --git a/vendor/openssl-sys/src/handwritten/tls1.rs b/vendor/openssl-sys/src/handwritten/tls1.rs
new file mode 100644
index 000000000..8cf992fbc
--- /dev/null
+++ b/vendor/openssl-sys/src/handwritten/tls1.rs
@@ -0,0 +1,28 @@
+use super::super::*;
+use libc::*;
+
+extern "C" {
+    pub fn SSL_get_servername(ssl: *const SSL, name_type: c_int) -> *const c_char;
+
+    pub fn SSL_export_keying_material(
+        s: *mut SSL,
+        out: *mut c_uchar,
+        olen: size_t,
+        label: *const c_char,
+        llen: size_t,
+        context: *const c_uchar,
+        contextlen: size_t,
+        use_context: c_int,
+    ) -> c_int;
+
+    #[cfg(ossl111)]
+    pub fn SSL_export_keying_material_early(
+        s: *mut SSL,
+        out: *mut c_uchar,
+        olen: size_t,
+        label: *const c_char,
+        llen: size_t,
+        context: *const c_uchar,
+        contextlen: size_t,
+    ) -> c_int;
+}
diff --git a/vendor/openssl-sys/src/handwritten/types.rs b/vendor/openssl-sys/src/handwritten/types.rs
new file mode 100644
index 000000000..b229a3759
--- /dev/null
+++ b/vendor/openssl-sys/src/handwritten/types.rs
@@ -0,0 +1,1078 @@
+use libc::*;
+
+#[allow(unused_imports)]
+use super::super::*;
+
+pub enum ASN1_INTEGER {}
+pub enum ASN1_GENERALIZEDTIME {}
+pub enum ASN1_STRING {}
+pub enum ASN1_BIT_STRING {}
+pub enum ASN1_TIME {}
+pub enum ASN1_TYPE {}
+pub enum ASN1_OBJECT {}
+pub enum ASN1_OCTET_STRING {}
+
+pub enum bio_st {} // FIXME remove
+cfg_if! {
+    if #[cfg(any(ossl110, libressl280))] {
+        pub enum BIO {}
+    } else {
+        #[repr(C)]
+        pub struct BIO {
+            pub method: *mut BIO_METHOD,
+            pub callback: Option<
+                unsafe extern "C" fn(*mut BIO, c_int, *const c_char, c_int, c_long, c_long) -> c_long,
+            >,
+            pub cb_arg: *mut c_char,
+            pub init: c_int,
+            pub shutdown: c_int,
+            pub flags: c_int,
+            pub retry_reason: c_int,
+            pub num: c_int,
+            pub ptr: *mut c_void,
+            pub next_bio: *mut BIO,
+            pub prev_bio: *mut BIO,
+            pub references: c_int,
+            pub num_read: c_ulong,
+            pub num_write: c_ulong,
+            pub ex_data: CRYPTO_EX_DATA,
+        }
+    }
+}
+cfg_if! {
+    if #[cfg(any(ossl110, libressl350))] {
+        pub enum BIGNUM {}
+    } else {
+        #[repr(C)]
+        pub struct BIGNUM {
+            pub d: *mut BN_ULONG,
+            pub top: c_int,
+            pub dmax: c_int,
+            pub neg: c_int,
+            pub flags: c_int,
+        }
+    }
+}
+pub enum BN_BLINDING {}
+pub enum BN_MONT_CTX {}
+
+pub enum BN_CTX {}
+pub enum BN_GENCB {}
+
+cfg_if! {
+    if #[cfg(any(ossl110, libressl280))] {
+        pub enum EVP_CIPHER {}
+    } else {
+        #[repr(C)]
+        pub struct EVP_CIPHER {
+            pub nid: c_int,
+            pub block_size: c_int,
+            pub key_len: c_int,
+            pub iv_len: c_int,
+            pub flags: c_ulong,
+            pub init: Option<
+                unsafe extern "C" fn(*mut EVP_CIPHER_CTX, *const c_uchar, *const c_uchar, c_int) -> c_int,
+            >,
+            pub do_cipher: Option<
+                unsafe extern "C" fn(*mut EVP_CIPHER_CTX, *mut c_uchar, *const c_uchar, size_t) -> c_int,
+            >,
+            pub cleanup: Option<unsafe extern "C" fn(*mut EVP_CIPHER_CTX) -> c_int>,
+            pub ctx_size: c_int,
+            pub set_asn1_parameters:
+                Option<unsafe extern "C" fn(*mut EVP_CIPHER_CTX, *mut ASN1_TYPE) -> c_int>,
+            pub get_asn1_parameters:
+                Option<unsafe extern "C" fn(*mut EVP_CIPHER_CTX, *mut ASN1_TYPE) -> c_int>,
+            pub ctrl:
+                Option<unsafe extern "C" fn(*mut EVP_CIPHER_CTX, c_int, c_int, *mut c_void) -> c_int>,
+            pub app_data: *mut c_void,
+        }
+    }
+}
+pub enum EVP_CIPHER_CTX {}
+pub enum EVP_MD {}
+cfg_if! {
+    if #[cfg(any(ossl110, libressl280))] {
+        pub enum EVP_MD_CTX {}
+    } else {
+        #[repr(C)]
+        pub struct EVP_MD_CTX {
+            digest: *mut EVP_MD,
+            engine: *mut ENGINE,
+            flags: c_ulong,
+            md_data: *mut c_void,
+            pctx: *mut EVP_PKEY_CTX,
+            update: *mut c_void,
+        }
+    }
+}
+
+pub enum PKCS8_PRIV_KEY_INFO {}
+
+pub enum EVP_PKEY_ASN1_METHOD {}
+
+pub enum EVP_PKEY_CTX {}
+
+cfg_if! {
+    if #[cfg(any(ossl110, libressl280))] {
+        pub enum HMAC_CTX {}
+    } else {
+        #[repr(C)]
+        pub struct HMAC_CTX {
+            md: *mut EVP_MD,
+            md_ctx: EVP_MD_CTX,
+            i_ctx: EVP_MD_CTX,
+            o_ctx: EVP_MD_CTX,
+            key_length: c_uint,
+            key: [c_uchar; 128],
+        }
+    }
+}
+
+cfg_if! {
+    if #[cfg(any(ossl110, libressl280))] {
+        pub enum DH {}
+    } else {
+        #[repr(C)]
+        pub struct DH {
+            pub pad: c_int,
+            pub version: c_int,
+            pub p: *mut BIGNUM,
+            pub g: *mut BIGNUM,
+            pub length: c_long,
+            pub pub_key: *mut BIGNUM,
+            pub priv_key: *mut BIGNUM,
+            pub flags: c_int,
+            pub method_mont_p: *mut BN_MONT_CTX,
+            pub q: *mut BIGNUM,
+            pub j: *mut BIGNUM,
+            pub seed: *mut c_uchar,
+            pub seedlen: c_int,
+            pub counter: *mut BIGNUM,
+            pub references: c_int,
+            pub ex_data: CRYPTO_EX_DATA,
+            pub meth: *const DH_METHOD,
+            pub engine: *mut ENGINE,
+        }
+    }
+}
+pub enum DH_METHOD {}
+
+cfg_if! {
+    if #[cfg(any(ossl110, libressl280))] {
+        pub enum DSA {}
+    } else {
+        #[repr(C)]
+        pub struct DSA {
+            pub pad: c_int,
+            pub version: c_long,
+            pub write_params: c_int,
+
+            pub p: *mut BIGNUM,
+            pub q: *mut BIGNUM,
+            pub g: *mut BIGNUM,
+            pub pub_key: *mut BIGNUM,
+            pub priv_key: *mut BIGNUM,
+            pub kinv: *mut BIGNUM,
+            pub r: *mut BIGNUM,
+
+            pub flags: c_int,
+            pub method_mont_p: *mut BN_MONT_CTX,
+            pub references: c_int,
+            pub ex_data: CRYPTO_EX_DATA,
+            pub meth: *const DSA_METHOD,
+            pub engine: *mut ENGINE,
+        }
+    }
+}
+pub enum DSA_METHOD {}
+
+cfg_if! {
+    if #[cfg(any(ossl110, libressl280))] {
+        pub enum RSA {}
+    } else if #[cfg(libressl)] {
+        #[repr(C)]
+        pub struct RSA {
+            pub pad: c_int,
+            pub version: c_long,
+            pub meth: *const RSA_METHOD,
+
+            pub engine: *mut ENGINE,
+            pub n: *mut BIGNUM,
+            pub e: *mut BIGNUM,
+            pub d: *mut BIGNUM,
+            pub p: *mut BIGNUM,
+            pub q: *mut BIGNUM,
+            pub dmp1: *mut BIGNUM,
+            pub dmq1: *mut BIGNUM,
+            pub iqmp: *mut BIGNUM,
+
+            pub ex_data: CRYPTO_EX_DATA,
+            pub references: c_int,
+            pub flags: c_int,
+
+            pub _method_mod_n: *mut BN_MONT_CTX,
+            pub _method_mod_p: *mut BN_MONT_CTX,
+            pub _method_mod_q: *mut BN_MONT_CTX,
+
+            pub blinding: *mut BN_BLINDING,
+            pub mt_blinding: *mut BN_BLINDING,
+        }
+    } else {
+        #[repr(C)]
+        pub struct RSA {
+            pub pad: c_int,
+            pub version: c_long,
+            pub meth: *const RSA_METHOD,
+
+            pub engine: *mut ENGINE,
+            pub n: *mut BIGNUM,
+            pub e: *mut BIGNUM,
+            pub d: *mut BIGNUM,
+            pub p: *mut BIGNUM,
+            pub q: *mut BIGNUM,
+            pub dmp1: *mut BIGNUM,
+            pub dmq1: *mut BIGNUM,
+            pub iqmp: *mut BIGNUM,
+
+            pub ex_data: CRYPTO_EX_DATA,
+            pub references: c_int,
+            pub flags: c_int,
+
+            pub _method_mod_n: *mut BN_MONT_CTX,
+            pub _method_mod_p: *mut BN_MONT_CTX,
+            pub _method_mod_q: *mut BN_MONT_CTX,
+
+            pub bignum_data: *mut c_char,
+            pub blinding: *mut BN_BLINDING,
+            pub mt_blinding: *mut BN_BLINDING,
+        }
+    }
+}
+pub enum RSA_METHOD {}
+
+pub enum EC_KEY {}
+
+cfg_if! {
+    if #[cfg(any(ossl110, libressl280))] {
+        pub enum X509 {}
+    } else if #[cfg(libressl)] {
+        #[repr(C)]
+        pub struct X509 {
+            pub cert_info: *mut X509_CINF,
+            pub sig_alg: *mut X509_ALGOR,
+            pub signature: *mut ASN1_BIT_STRING,
+            pub valid: c_int,
+            pub references: c_int,
+            pub name: *mut c_char,
+            pub ex_data: CRYPTO_EX_DATA,
+            pub ex_pathlen: c_long,
+            pub ex_pcpathlen: c_long,
+            pub ex_flags: c_ulong,
+            pub ex_kusage: c_ulong,
+            pub ex_xkusage: c_ulong,
+            pub ex_nscert: c_ulong,
+            skid: *mut c_void,
+            akid: *mut c_void,
+            policy_cache: *mut c_void,
+            crldp: *mut c_void,
+            altname: *mut c_void,
+            nc: *mut c_void,
+            #[cfg(not(osslconf = "OPENSSL_NO_SHA"))]
+            sha1_hash: [c_uchar; 20],
+            aux: *mut c_void,
+        }
+    } else {
+        #[repr(C)]
+        pub struct X509 {
+            pub cert_info: *mut X509_CINF,
+            pub sig_alg: *mut X509_ALGOR,
+            pub signature: *mut ASN1_BIT_STRING,
+            pub valid: c_int,
+            pub references: c_int,
+            pub name: *mut c_char,
+            pub ex_data: CRYPTO_EX_DATA,
+            pub ex_pathlen: c_long,
+            pub ex_pcpathlen: c_long,
+            pub ex_flags: c_ulong,
+            pub ex_kusage: c_ulong,
+            pub ex_xkusage: c_ulong,
+            pub ex_nscert: c_ulong,
+            skid: *mut c_void,
+            akid: *mut c_void,
+            policy_cache: *mut c_void,
+            crldp: *mut c_void,
+            altname: *mut c_void,
+            nc: *mut c_void,
+            #[cfg(not(osslconf = "OPENSSL_NO_RFC3779"))]
+            rfc3779_addr: *mut c_void,
+            #[cfg(not(osslconf = "OPENSSL_NO_RFC3779"))]
+            rfc3779_asid: *mut c_void,
+            #[cfg(not(osslconf = "OPENSSL_NO_SHA"))]
+            sha1_hash: [c_uchar; 20],
+            aux: *mut c_void,
+        }
+    }
+}
+cfg_if! {
+    if #[cfg(ossl110)] {
+        pub enum X509_ALGOR {}
+    } else {
+        #[repr(C)]
+        pub struct X509_ALGOR {
+            pub algorithm: *mut ASN1_OBJECT,
+            parameter: *mut c_void,
+        }
+    }
+}
+
+pub enum X509_LOOKUP_METHOD {}
+
+pub enum X509_NAME {}
+
+cfg_if! {
+    if #[cfg(any(ossl110, libressl270))] {
+        pub enum X509_STORE {}
+    } else {
+        #[repr(C)]
+        pub struct X509_STORE {
+            cache: c_int,
+            pub objs: *mut stack_st_X509_OBJECT,
+            get_cert_methods: *mut stack_st_X509_LOOKUP,
+            param: *mut X509_VERIFY_PARAM,
+            verify: Option<extern "C" fn(ctx: *mut X509_STORE_CTX) -> c_int>,
+            verify_cb: Option<extern "C" fn(ok: c_int, ctx: *mut X509_STORE_CTX) -> c_int>,
+            get_issuer: Option<
+                extern "C" fn(issuer: *mut *mut X509, ctx: *mut X509_STORE_CTX, x: *mut X509) -> c_int,
+            >,
+            check_issued:
+                Option<extern "C" fn(ctx: *mut X509_STORE_CTX, x: *mut X509, issuer: *mut X509) -> c_int>,
+            check_revocation: Option<extern "C" fn(ctx: *mut X509_STORE_CTX) -> c_int>,
+            get_crl: Option<
+                extern "C" fn(ctx: *mut X509_STORE_CTX, crl: *mut *mut X509_CRL, x: *mut X509) -> c_int,
+            >,
+            check_crl: Option<extern "C" fn(ctx: *mut X509_STORE_CTX, crl: *mut X509_CRL) -> c_int>,
+            cert_crl:
+                Option<extern "C" fn(ctx: *mut X509_STORE_CTX, crl: *mut X509_CRL, x: *mut X509) -> c_int>,
+            lookup_certs:
+                Option<extern "C" fn(ctx: *mut X509_STORE_CTX, nm: *const X509_NAME) -> *mut stack_st_X509>,
+            lookup_crls: Option<
+                extern "C" fn(ctx: *const X509_STORE_CTX, nm: *const X509_NAME) -> *mut stack_st_X509_CRL,
+            >,
+            cleanup: Option<extern "C" fn(ctx: *mut X509_STORE_CTX) -> c_int>,
+            ex_data: CRYPTO_EX_DATA,
+            references: c_int,
+        }
+    }
+}
+
+pub enum X509_STORE_CTX {}
+
+cfg_if! {
+    if #[cfg(any(ossl110, libressl280))] {
+        pub enum X509_VERIFY_PARAM {}
+    } else if #[cfg(libressl251)] {
+        #[repr(C)]
+        pub struct X509_VERIFY_PARAM {
+            pub name: *mut c_char,
+            pub check_time: time_t,
+            pub inh_flags: c_ulong,
+            pub flags: c_ulong,
+            pub purpose: c_int,
+            pub trust: c_int,
+            pub depth: c_int,
+            pub policies: *mut stack_st_ASN1_OBJECT,
+            id: *mut c_void,
+        }
+    } else if #[cfg(libressl)] {
+        #[repr(C)]
+        pub struct X509_VERIFY_PARAM {
+            pub name: *mut c_char,
+            pub check_time: time_t,
+            pub inh_flags: c_ulong,
+            pub flags: c_ulong,
+            pub purpose: c_int,
+            pub trust: c_int,
+            pub depth: c_int,
+            pub policies: *mut stack_st_ASN1_OBJECT,
+            //pub id: *mut X509_VERIFY_PARAM_ID,
+        }
+    } else {
+        #[repr(C)]
+        pub struct X509_VERIFY_PARAM {
+            pub name: *mut c_char,
+            pub check_time: time_t,
+            pub inh_flags: c_ulong,
+            pub flags: c_ulong,
+            pub purpose: c_int,
+            pub trust: c_int,
+            pub depth: c_int,
+            pub policies: *mut stack_st_ASN1_OBJECT,
+            #[cfg(ossl102)]
+            pub id: *mut X509_VERIFY_PARAM_ID,
+        }
+    }
+}
+
+cfg_if! {
+    if #[cfg(any(ossl110, libressl270))] {
+        pub enum X509_OBJECT {}
+    } else {
+        #[repr(C)]
+        pub struct X509_OBJECT {
+            pub type_: c_int,
+            pub data: X509_OBJECT_data,
+        }
+        #[repr(C)]
+        pub union X509_OBJECT_data {
+            pub ptr: *mut c_char,
+            pub x509: *mut X509,
+            pub crl: *mut X509_CRL,
+            pub pkey: *mut EVP_PKEY,
+        }
+    }
+}
+
+pub enum X509_LOOKUP {}
+
+#[repr(C)]
+pub struct X509V3_CTX {
+    flags: c_int,
+    issuer_cert: *mut c_void,
+    subject_cert: *mut c_void,
+    subject_req: *mut c_void,
+    crl: *mut c_void,
+    db_meth: *mut c_void,
+    db: *mut c_void,
+    #[cfg(ossl300)]
+    issuer_pkey: *mut c_void,
+    // I like the last comment line, it is copied from OpenSSL sources:
+    // Maybe more here
+}
+pub enum CONF {}
+#[cfg(ossl110)]
+pub enum OPENSSL_INIT_SETTINGS {}
+
+pub enum ENGINE {}
+cfg_if! {
+    if #[cfg(any(ossl110, libressl280))] {
+        pub enum SSL {}
+    } else if #[cfg(libressl251)] {
+        #[repr(C)]
+        pub struct SSL {
+            version: c_int,
+            method: *const SSL_METHOD,
+            rbio: *mut BIO,
+            wbio: *mut BIO,
+            bbio: *mut BIO,
+            pub server: c_int,
+            s3: *mut c_void,
+            d1: *mut c_void,
+            param: *mut c_void,
+            cipher_list: *mut stack_st_SSL_CIPHER,
+            cert: *mut c_void,
+            sid_ctx_length: c_uint,
+            sid_ctx: [c_uchar; SSL_MAX_SID_CTX_LENGTH as usize],
+            session: *mut SSL_SESSION,
+            verify_mode: c_int,
+            error: c_int,
+            error_code: c_int,
+            ctx: *mut SSL_CTX,
+            verify_result: c_long,
+            references: c_int,
+            client_version: c_int,
+            max_send_fragment: c_uint,
+            tlsext_hostname: *mut c_char,
+            tlsext_status_type: c_int,
+            initial_ctx: *mut SSL_CTX,
+            enc_read_ctx: *mut EVP_CIPHER_CTX,
+            read_hash: *mut EVP_MD_CTX,
+            internal: *mut c_void,
+        }
+    } else if #[cfg(libressl)] {
+        #[repr(C)]
+        pub struct SSL {
+            version: c_int,
+            type_: c_int,
+            method: *const SSL_METHOD,
+            rbio: *mut c_void,
+            wbio: *mut c_void,
+            bbio: *mut c_void,
+            rwstate: c_int,
+            in_handshake: c_int,
+            handshake_func: Option<unsafe extern "C" fn(*mut SSL) -> c_int>,
+            pub server: c_int,
+            new_session: c_int,
+            quiet_shutdown: c_int,
+            shutdown: c_int,
+            state: c_int,
+            rstate: c_int,
+            init_buf: *mut c_void,
+            init_msg: *mut c_void,
+            init_num: c_int,
+            init_off: c_int,
+            packet: *mut c_uchar,
+            packet_length: c_uint,
+            s3: *mut c_void,
+            d1: *mut c_void,
+            read_ahead: c_int,
+            msg_callback: Option<
+                unsafe extern "C" fn(c_int,
+                                    c_int,
+                                    c_int,
+                                    *const c_void,
+                                    size_t,
+                                    *mut SSL,
+                                    *mut c_void),
+            >,
+            msg_callback_arg: *mut c_void,
+            hit: c_int,
+            param: *mut c_void,
+            cipher_list: *mut stack_st_SSL_CIPHER,
+            cipher_list_by_id: *mut stack_st_SSL_CIPHER,
+            mac_flags: c_int,
+            aead_read_ctx: *mut c_void,
+            enc_read_ctx: *mut EVP_CIPHER_CTX,
+            read_hash: *mut EVP_MD_CTX,
+            aead_write_ctx: *mut c_void,
+            enc_write_ctx: *mut EVP_CIPHER_CTX,
+            write_hash: *mut EVP_MD_CTX,
+            cert: *mut c_void,
+            sid_ctx_length: c_uint,
+            sid_ctx: [c_uchar; SSL_MAX_SID_CTX_LENGTH as usize],
+            session: *mut SSL_SESSION,
+            generate_session_id: GEN_SESSION_CB,
+            verify_mode: c_int,
+            verify_callback: Option<unsafe extern "C" fn(c_int, *mut X509_STORE_CTX) -> c_int>,
+            info_callback: Option<unsafe extern "C" fn(*mut SSL, c_int, c_int)>,
+            error: c_int,
+            error_code: c_int,
+            ctx: *mut SSL_CTX,
+            debug: c_int,
+            verify_result: c_long,
+            ex_data: CRYPTO_EX_DATA,
+            client_CA: *mut stack_st_X509_NAME,
+            references: c_int,
+            options: c_ulong,
+            mode: c_ulong,
+            max_cert_list: c_long,
+            first_packet: c_int,
+            client_version: c_int,
+            max_send_fragment: c_uint,
+            tlsext_debug_cb:
+                Option<unsafe extern "C" fn(*mut SSL, c_int, c_int, *mut c_uchar, c_int, *mut c_void)>,
+            tlsext_debug_arg: *mut c_void,
+            tlsext_hostname: *mut c_char,
+            servername_done: c_int,
+            tlsext_status_type: c_int,
+            tlsext_status_expected: c_int,
+            tlsext_ocsp_ids: *mut c_void,
+            tlsext_ocsp_exts: *mut c_void,
+            tlsext_ocsp_resp: *mut c_uchar,
+            tlsext_ocsp_resplen: c_int,
+            tlsext_ticket_expected: c_int,
+            tlsext_ecpointformatlist_length: size_t,
+            tlsext_ecpointformatlist: *mut c_uchar,
+            tlsext_ellipticcurvelist_length: size_t,
+            tlsext_ellipticcurvelist: *mut c_uchar,
+            tlsext_session_ticket: *mut c_void,
+            tlsext_session_ticket_ext_cb: tls_session_ticket_ext_cb_fn,
+            tls_session_ticket_ext_cb_arg: *mut c_void,
+            tls_session_secret_cb: tls_session_secret_cb_fn,
+            tls_session_secret_cb_arg: *mut c_void,
+            initial_ctx: *mut SSL_CTX,
+            next_proto_negotiated: *mut c_uchar,
+            next_proto_negotiated_len: c_uchar,
+            srtp_profiles: *mut c_void,
+            srtp_profile: *mut c_void,
+            tlsext_heartbeat: c_uint,
+            tlsext_hb_pending: c_uint,
+            tlsext_hb_seq: c_uint,
+            alpn_client_proto_list: *mut c_uchar,
+            alpn_client_proto_list_len: c_uint,
+            renegotiate: c_int,
+        }
+    } else {
+        #[repr(C)]
+        pub struct SSL {
+            version: c_int,
+            type_: c_int,
+            method: *const SSL_METHOD,
+            rbio: *mut c_void,
+            wbio: *mut c_void,
+            bbio: *mut c_void,
+            rwstate: c_int,
+            in_handshake: c_int,
+            handshake_func: Option<unsafe extern "C" fn(*mut SSL) -> c_int>,
+            pub server: c_int,
+            new_session: c_int,
+            quiet_session: c_int,
+            shutdown: c_int,
+            state: c_int,
+            rstate: c_int,
+            init_buf: *mut c_void,
+            init_msg: *mut c_void,
+            init_num: c_int,
+            init_off: c_int,
+            packet: *mut c_uchar,
+            packet_length: c_uint,
+            s2: *mut c_void,
+            s3: *mut c_void,
+            d1: *mut c_void,
+            read_ahead: c_int,
+            msg_callback: Option<
+                unsafe extern "C" fn(c_int, c_int, c_int, *const c_void, size_t, *mut SSL, *mut c_void),
+            >,
+            msg_callback_arg: *mut c_void,
+            hit: c_int,
+            param: *mut c_void,
+            cipher_list: *mut stack_st_SSL_CIPHER,
+            cipher_list_by_id: *mut stack_st_SSL_CIPHER,
+            mac_flags: c_int,
+            enc_read_ctx: *mut EVP_CIPHER_CTX,
+            read_hash: *mut EVP_MD_CTX,
+            expand: *mut c_void,
+            enc_write_ctx: *mut EVP_CIPHER_CTX,
+            write_hash: *mut EVP_MD_CTX,
+            compress: *mut c_void,
+            cert: *mut c_void,
+            sid_ctx_length: c_uint,
+            sid_ctx: [c_uchar; SSL_MAX_SID_CTX_LENGTH as usize],
+            session: *mut SSL_SESSION,
+            generate_session_id: GEN_SESSION_CB,
+            verify_mode: c_int,
+            verify_callback: Option<unsafe extern "C" fn(c_int, *mut X509_STORE_CTX) -> c_int>,
+            info_callback: Option<unsafe extern "C" fn(*mut SSL, c_int, c_int)>,
+            error: c_int,
+            error_code: c_int,
+            #[cfg(not(osslconf = "OPENSSL_NO_KRB5"))]
+            kssl_ctx: *mut c_void,
+            #[cfg(not(osslconf = "OPENSSL_NO_PSK"))]
+            psk_client_callback: Option<
+                unsafe extern "C" fn(*mut SSL, *const c_char, *mut c_char, c_uint, *mut c_uchar, c_uint)
+                    -> c_uint,
+            >,
+            #[cfg(not(osslconf = "OPENSSL_NO_PSK"))]
+            psk_server_callback:
+                Option<unsafe extern "C" fn(*mut SSL, *const c_char, *mut c_uchar, c_uint) -> c_uint>,
+            ctx: *mut SSL_CTX,
+            debug: c_int,
+            verify_result: c_long,
+            ex_data: CRYPTO_EX_DATA,
+            client_CA: *mut stack_st_X509_NAME,
+            references: c_int,
+            options: c_ulong,
+            mode: c_ulong,
+            max_cert_list: c_long,
+            first_packet: c_int,
+            client_version: c_int,
+            max_send_fragment: c_uint,
+            #[cfg(not(osslconf = "OPENSSL_NO_TLSEXT"))]
+            tlsext_debug_cb:
+                Option<unsafe extern "C" fn(*mut SSL, c_int, c_int, *mut c_uchar, c_int, *mut c_void)>,
+            #[cfg(not(osslconf = "OPENSSL_NO_TLSEXT"))]
+            tlsext_debug_arg: *mut c_void,
+            #[cfg(not(osslconf = "OPENSSL_NO_TLSEXT"))]
+            tlsext_hostname: *mut c_char,
+            #[cfg(not(osslconf = "OPENSSL_NO_TLSEXT"))]
+            servername_done: c_int,
+            #[cfg(not(osslconf = "OPENSSL_NO_TLSEXT"))]
+            tlsext_status_type: c_int,
+            #[cfg(not(osslconf = "OPENSSL_NO_TLSEXT"))]
+            tlsext_status_expected: c_int,
+            #[cfg(not(osslconf = "OPENSSL_NO_TLSEXT"))]
+            tlsext_ocsp_ids: *mut c_void,
+            #[cfg(not(osslconf = "OPENSSL_NO_TLSEXT"))]
+            tlsext_ocsp_exts: *mut c_void,
+            #[cfg(not(osslconf = "OPENSSL_NO_TLSEXT"))]
+            tlsext_ocsp_resp: *mut c_uchar,
+            #[cfg(not(osslconf = "OPENSSL_NO_TLSEXT"))]
+            tlsext_ocsp_resplen: c_int,
+            #[cfg(not(osslconf = "OPENSSL_NO_TLSEXT"))]
+            tlsext_ticket_expected: c_int,
+            #[cfg(all(
+                not(osslconf = "OPENSSL_NO_TLSEXT"),
+                not(osslconf = "OPENSSL_NO_EC")
+            ))]
+            tlsext_ecpointformatlist_length: size_t,
+            #[cfg(all(
+                not(osslconf = "OPENSSL_NO_TLSEXT"),
+                not(osslconf = "OPENSSL_NO_EC")
+            ))]
+            tlsext_ecpointformatlist: *mut c_uchar,
+            #[cfg(all(
+                not(osslconf = "OPENSSL_NO_TLSEXT"),
+                not(osslconf = "OPENSSL_NO_EC")
+            ))]
+            tlsext_ellipticcurvelist_length: size_t,
+            #[cfg(all(
+                not(osslconf = "OPENSSL_NO_TLSEXT"),
+                not(osslconf = "OPENSSL_NO_EC")
+            ))]
+            tlsext_ellipticcurvelist: *mut c_uchar,
+            #[cfg(not(osslconf = "OPENSSL_NO_TLSEXT"))]
+            tlsext_opaque_prf_input: *mut c_void,
+            #[cfg(not(osslconf = "OPENSSL_NO_TLSEXT"))]
+            tlsext_opaque_prf_input_len: size_t,
+            #[cfg(not(osslconf = "OPENSSL_NO_TLSEXT"))]
+            tlsext_session_ticket: *mut c_void,
+            #[cfg(not(osslconf = "OPENSSL_NO_TLSEXT"))]
+            tlsext_session_ticket_ext_cb: tls_session_ticket_ext_cb_fn,
+            #[cfg(not(osslconf = "OPENSSL_NO_TLSEXT"))]
+            tls_session_ticket_ext_cb_arg: *mut c_void,
+            #[cfg(not(osslconf = "OPENSSL_NO_TLSEXT"))]
+            tls_session_secret_cb: tls_session_secret_cb_fn,
+            #[cfg(not(osslconf = "OPENSSL_NO_TLSEXT"))]
+            tls_session_secret_cb_arg: *mut c_void,
+            #[cfg(not(osslconf = "OPENSSL_NO_TLSEXT"))]
+            initial_ctx: *mut SSL_CTX,
+            #[cfg(all(
+                not(osslconf = "OPENSSL_NO_TLSEXT"),
+                not(osslconf = "OPENSSL_NO_NEXTPROTONEG")
+            ))]
+            next_proto_negotiated: *mut c_uchar,
+            #[cfg(all(
+                not(osslconf = "OPENSSL_NO_TLSEXT"),
+                not(osslconf = "OPENSSL_NO_NEXTPROTONEG")
+            ))]
+            next_proto_negotiated_len: c_uchar,
+            #[cfg(not(osslconf = "OPENSSL_NO_TLSEXT"))]
+            srtp_profiles: *mut c_void,
+            #[cfg(not(osslconf = "OPENSSL_NO_TLSEXT"))]
+            srtp_profile: *mut c_void,
+            #[cfg(not(osslconf = "OPENSSL_NO_TLSEXT"))]
+            tlsext_heartbeat: c_uint,
+            #[cfg(not(osslconf = "OPENSSL_NO_TLSEXT"))]
+            tlsext_hb_pending: c_uint,
+            #[cfg(not(osslconf = "OPENSSL_NO_TLSEXT"))]
+            tlsext_hb_seq: c_uint,
+            renegotiate: c_int,
+            #[cfg(not(osslconf = "OPENSSL_NO_SRP"))]
+            srp_ctx: SRP_CTX,
+            #[cfg(all(not(osslconf = "OPENSSL_NO_TLSEXT"), ossl102))]
+            alpn_client_proto_list: *mut c_uchar,
+            #[cfg(all(not(osslconf = "OPENSSL_NO_TLSEXT"), ossl102))]
+            alpn_client_proto_list_len: c_uint,
+        }
+    }
+}
+cfg_if! {
+    if #[cfg(any(ossl110, libressl280))] {
+        pub enum SSL_CTX {}
+    } else if #[cfg(libressl251)] {
+        #[repr(C)]
+        pub struct SSL_CTX {
+            method: *const SSL_METHOD,
+            cipher_list: *mut stack_st_SSL_CIPHER,
+            cert_store: *mut c_void,
+            session_timeout: c_long,
+            pub references: c_int,
+            extra_certs: *mut stack_st_X509,
+            verify_mode: c_int,
+            sid_ctx_length: c_uint,
+            sid_ctx: [c_uchar; SSL_MAX_SID_CTX_LENGTH as usize],
+            param: *mut X509_VERIFY_PARAM,
+            default_passwd_callback: *mut c_void,
+            default_passwd_callback_userdata: *mut c_void,
+            internal: *mut c_void,
+        }
+    } else if #[cfg(libressl)] {
+        #[repr(C)]
+        pub struct SSL_CTX {
+            method: *mut c_void,
+            cipher_list: *mut c_void,
+            cipher_list_by_id: *mut c_void,
+            cert_store: *mut c_void,
+            sessions: *mut c_void,
+            session_cache_size: c_ulong,
+            session_cache_head: *mut c_void,
+            session_cache_tail: *mut c_void,
+            session_cache_mode: c_int,
+            session_timeout: c_long,
+            new_session_cb: *mut c_void,
+            remove_session_cb: *mut c_void,
+            get_session_cb: *mut c_void,
+            stats: [c_int; 11],
+            pub references: c_int,
+            app_verify_callback: *mut c_void,
+            app_verify_arg: *mut c_void,
+            default_passwd_callback: *mut c_void,
+            default_passwd_callback_userdata: *mut c_void,
+            client_cert_cb: *mut c_void,
+            app_gen_cookie_cb: *mut c_void,
+            app_verify_cookie_cb: *mut c_void,
+            ex_dat: CRYPTO_EX_DATA,
+            rsa_md5: *mut c_void,
+            md5: *mut c_void,
+            sha1: *mut c_void,
+            extra_certs: *mut c_void,
+            comp_methods: *mut c_void,
+            info_callback: *mut c_void,
+            client_CA: *mut c_void,
+            options: c_ulong,
+            mode: c_ulong,
+            max_cert_list: c_long,
+            cert: *mut c_void,
+            read_ahead: c_int,
+            msg_callback: *mut c_void,
+            msg_callback_arg: *mut c_void,
+            verify_mode: c_int,
+            sid_ctx_length: c_uint,
+            sid_ctx: [c_uchar; 32],
+            default_verify_callback: *mut c_void,
+            generate_session_id: *mut c_void,
+            param: *mut c_void,
+            quiet_shutdown: c_int,
+            max_send_fragment: c_uint,
+
+            #[cfg(not(osslconf = "OPENSSL_NO_ENGINE"))]
+            client_cert_engine: *mut c_void,
+
+            tlsext_servername_callback: *mut c_void,
+            tlsect_servername_arg: *mut c_void,
+            tlsext_tick_key_name: [c_uchar; 16],
+            tlsext_tick_hmac_key: [c_uchar; 16],
+            tlsext_tick_aes_key: [c_uchar; 16],
+            tlsext_ticket_key_cb: *mut c_void,
+            tlsext_status_cb: *mut c_void,
+            tlsext_status_arg: *mut c_void,
+            tlsext_opaque_prf_input_callback: *mut c_void,
+            tlsext_opaque_prf_input_callback_arg: *mut c_void,
+
+            next_protos_advertised_cb: *mut c_void,
+            next_protos_advertised_cb_arg: *mut c_void,
+            next_proto_select_cb: *mut c_void,
+            next_proto_select_cb_arg: *mut c_void,
+
+            srtp_profiles: *mut c_void,
+        }
+    } else {
+        #[repr(C)]
+        pub struct SSL_CTX {
+            method: *mut c_void,
+            cipher_list: *mut c_void,
+            cipher_list_by_id: *mut c_void,
+            cert_store: *mut c_void,
+            sessions: *mut c_void,
+            session_cache_size: c_ulong,
+            session_cache_head: *mut c_void,
+            session_cache_tail: *mut c_void,
+            session_cache_mode: c_int,
+            session_timeout: c_long,
+            new_session_cb: *mut c_void,
+            remove_session_cb: *mut c_void,
+            get_session_cb: *mut c_void,
+            stats: [c_int; 11],
+            pub references: c_int,
+            app_verify_callback: *mut c_void,
+            app_verify_arg: *mut c_void,
+            default_passwd_callback: *mut c_void,
+            default_passwd_callback_userdata: *mut c_void,
+            client_cert_cb: *mut c_void,
+            app_gen_cookie_cb: *mut c_void,
+            app_verify_cookie_cb: *mut c_void,
+            ex_dat: CRYPTO_EX_DATA,
+            rsa_md5: *mut c_void,
+            md5: *mut c_void,
+            sha1: *mut c_void,
+            extra_certs: *mut c_void,
+            comp_methods: *mut c_void,
+            info_callback: *mut c_void,
+            client_CA: *mut c_void,
+            options: c_ulong,
+            mode: c_ulong,
+            max_cert_list: c_long,
+            cert: *mut c_void,
+            read_ahead: c_int,
+            msg_callback: *mut c_void,
+            msg_callback_arg: *mut c_void,
+            verify_mode: c_int,
+            sid_ctx_length: c_uint,
+            sid_ctx: [c_uchar; 32],
+            default_verify_callback: *mut c_void,
+            generate_session_id: *mut c_void,
+            param: *mut c_void,
+            quiet_shutdown: c_int,
+            max_send_fragment: c_uint,
+
+            #[cfg(not(osslconf = "OPENSSL_NO_ENGINE"))]
+            client_cert_engine: *mut c_void,
+
+            #[cfg(not(osslconf = "OPENSSL_NO_TLSEXT"))]
+            tlsext_servername_callback: *mut c_void,
+            #[cfg(not(osslconf = "OPENSSL_NO_TLSEXT"))]
+            tlsect_servername_arg: *mut c_void,
+            #[cfg(not(osslconf = "OPENSSL_NO_TLSEXT"))]
+            tlsext_tick_key_name: [c_uchar; 16],
+            #[cfg(not(osslconf = "OPENSSL_NO_TLSEXT"))]
+            tlsext_tick_hmac_key: [c_uchar; 16],
+            #[cfg(not(osslconf = "OPENSSL_NO_TLSEXT"))]
+            tlsext_tick_aes_key: [c_uchar; 16],
+            #[cfg(not(osslconf = "OPENSSL_NO_TLSEXT"))]
+            tlsext_ticket_key_cb: *mut c_void,
+            #[cfg(not(osslconf = "OPENSSL_NO_TLSEXT"))]
+            tlsext_status_cb: *mut c_void,
+            #[cfg(not(osslconf = "OPENSSL_NO_TLSEXT"))]
+            tlsext_status_arg: *mut c_void,
+            #[cfg(not(osslconf = "OPENSSL_NO_TLSEXT"))]
+            tlsext_opaque_prf_input_callback: *mut c_void,
+            #[cfg(not(osslconf = "OPENSSL_NO_TLSEXT"))]
+            tlsext_opaque_prf_input_callback_arg: *mut c_void,
+
+            #[cfg(not(osslconf = "OPENSSL_NO_PSK"))]
+            psk_identity_hint: *mut c_void,
+            #[cfg(not(osslconf = "OPENSSL_NO_PSK"))]
+            psk_client_callback: *mut c_void,
+            #[cfg(not(osslconf = "OPENSSL_NO_PSK"))]
+            psk_server_callback: *mut c_void,
+
+            #[cfg(not(osslconf = "OPENSSL_NO_BUF_FREELISTS"))]
+            freelist_max_len: c_uint,
+            #[cfg(not(osslconf = "OPENSSL_NO_BUF_FREELISTS"))]
+            wbuf_freelist: *mut c_void,
+            #[cfg(not(osslconf = "OPENSSL_NO_BUF_FREELISTS"))]
+            rbuf_freelist: *mut c_void,
+
+            #[cfg(not(osslconf = "OPENSSL_NO_SRP"))]
+            srp_ctx: SRP_CTX,
+
+            #[cfg(all(
+                not(osslconf = "OPENSSL_NO_TLSEXT"),
+                not(osslconf = "OPENSSL_NO_NEXTPROTONEG")
+            ))]
+            next_protos_advertised_cb: *mut c_void,
+            #[cfg(all(
+                not(osslconf = "OPENSSL_NO_TLSEXT"),
+                not(osslconf = "OPENSSL_NO_NEXTPROTONEG")
+            ))]
+            next_protos_advertised_cb_arg: *mut c_void,
+            #[cfg(all(
+                not(osslconf = "OPENSSL_NO_TLSEXT"),
+                not(osslconf = "OPENSSL_NO_NEXTPROTONEG")
+            ))]
+            next_proto_select_cb: *mut c_void,
+            #[cfg(all(
+                not(osslconf = "OPENSSL_NO_TLSEXT"),
+                not(osslconf = "OPENSSL_NO_NEXTPROTONEG")
+            ))]
+            next_proto_select_cb_arg: *mut c_void,
+
+            #[cfg(all(not(osslconf = "OPENSSL_NO_TLSEXT"), ossl101))]
+            srtp_profiles: *mut c_void,
+            #[cfg(all(not(osslconf = "OPENSSL_NO_TLSEXT"), ossl102))]
+            alpn_select_cb: *mut c_void,
+            #[cfg(all(not(osslconf = "OPENSSL_NO_TLSEXT"), ossl102))]
+            alpn_select_cb_arg: *mut c_void,
+            #[cfg(all(not(osslconf = "OPENSSL_NO_TLSEXT"), ossl102))]
+            alpn_client_proto_list: *mut c_void,
+            #[cfg(all(not(osslconf = "OPENSSL_NO_TLSEXT"), ossl102))]
+            alpn_client_proto_list_len: c_uint,
+
+            #[cfg(all(
+                not(osslconf = "OPENSSL_NO_TLSEXT"),
+                not(osslconf = "OPENSSL_NO_EC"),
+                ossl102
+            ))]
+            tlsext_ecpointformatlist_length: size_t,
+            #[cfg(all(
+                not(osslconf = "OPENSSL_NO_TLSEXT"),
+                not(osslconf = "OPENSSL_NO_EC"),
+                ossl102
+            ))]
+            tlsext_ecpointformatlist: *mut c_uchar,
+            #[cfg(all(
+                not(osslconf = "OPENSSL_NO_TLSEXT"),
+                not(osslconf = "OPENSSL_NO_EC"),
+                ossl102
+            ))]
+            tlsext_ellipticcurvelist_length: size_t,
+            #[cfg(all(
+                not(osslconf = "OPENSSL_NO_TLSEXT"),
+                not(osslconf = "OPENSSL_NO_EC"),
+                ossl102
+            ))]
+            tlsext_ellipticcurvelist: *mut c_uchar,
+        }
+
+        #[repr(C)]
+        #[cfg(not(osslconf = "OPENSSL_NO_SRP"))]
+        pub struct SRP_CTX {
+            SRP_cb_arg: *mut c_void,
+            TLS_ext_srp_username_callback: *mut c_void,
+            SRP_verify_param_callback: *mut c_void,
+            SRP_give_srp_client_pwd_callback: *mut c_void,
+            login: *mut c_void,
+            N: *mut c_void,
+            g: *mut c_void,
+            s: *mut c_void,
+            B: *mut c_void,
+            A: *mut c_void,
+            a: *mut c_void,
+            b: *mut c_void,
+            v: *mut c_void,
+            info: *mut c_void,
+            stringth: c_int,
+            srp_Mask: c_ulong,
+        }
+    }
+}
+
+pub enum COMP_CTX {}
+
+cfg_if! {
+    if #[cfg(any(ossl110, libressl350))] {
+        pub enum COMP_METHOD {}
+    } else {
+        #[repr(C)]
+        pub struct COMP_METHOD {
+            pub type_: c_int,
+            pub name: *const c_char,
+            init: Option<unsafe extern "C" fn(*mut COMP_CTX) -> c_int>,
+            finish: Option<unsafe extern "C" fn(*mut COMP_CTX)>,
+            compress: Option<
+                unsafe extern "C" fn(
+                    *mut COMP_CTX,
+                    *mut c_uchar,
+                    c_uint,
+                    *mut c_uchar,
+                    c_uint,
+                ) -> c_int,
+            >,
+            expand: Option<
+                unsafe extern "C" fn(
+                    *mut COMP_CTX,
+                    *mut c_uchar,
+                    c_uint,
+                    *mut c_uchar,
+                    c_uint,
+                ) -> c_int,
+            >,
+            ctrl: Option<unsafe extern "C" fn() -> c_long>,
+            callback_ctrl: Option<unsafe extern "C" fn() -> c_long>,
+        }
+    }
+}
+
+cfg_if! {
+    if #[cfg(any(ossl110, libressl280))] {
+        pub enum CRYPTO_EX_DATA {}
+    } else if #[cfg(libressl)] {
+        #[repr(C)]
+        pub struct CRYPTO_EX_DATA {
+            pub sk: *mut stack_st_void,
+        }
+    } else {
+        #[repr(C)]
+        pub struct CRYPTO_EX_DATA {
+            pub sk: *mut stack_st_void,
+            pub dummy: c_int,
+        }
+    }
+}
+
+pub enum OCSP_RESPONSE {}
+
+#[cfg(ossl300)]
+pub enum OSSL_PROVIDER {}
+
+#[cfg(ossl300)]
+pub enum OSSL_LIB_CTX {}
diff --git a/vendor/openssl-sys/src/handwritten/x509.rs b/vendor/openssl-sys/src/handwritten/x509.rs
new file mode 100644
index 000000000..37bbf7b08
--- /dev/null
+++ b/vendor/openssl-sys/src/handwritten/x509.rs
@@ -0,0 +1,675 @@
+use super::super::*;
+use libc::*;
+
+#[repr(C)]
+pub struct X509_VAL {
+    pub notBefore: *mut ASN1_TIME,
+    pub notAfter: *mut ASN1_TIME,
+}
+
+pub enum X509_NAME_ENTRY {}
+
+stack!(stack_st_X509_NAME_ENTRY);
+
+stack!(stack_st_X509_NAME);
+
+pub enum X509_EXTENSION {}
+
+stack!(stack_st_X509_EXTENSION);
+
+stack!(stack_st_X509_ATTRIBUTE);
+
+cfg_if! {
+    if #[cfg(any(ossl110, libressl350))] {
+        pub enum X509_REQ_INFO {}
+    } else {
+        #[repr(C)]
+        pub struct X509_REQ_INFO {
+            pub enc: ASN1_ENCODING,
+            pub version: *mut ASN1_INTEGER,
+            pub subject: *mut X509_NAME,
+            pubkey: *mut c_void,
+            pub attributes: *mut stack_st_X509_ATTRIBUTE,
+        }
+    }
+}
+
+cfg_if! {
+    if #[cfg(any(ossl110, libressl350))] {
+        pub enum X509_CRL {}
+    } else {
+        #[repr(C)]
+        pub struct X509_CRL {
+            pub crl: *mut X509_CRL_INFO,
+            sig_alg: *mut X509_ALGOR,
+            signature: *mut c_void,
+            references: c_int,
+            flags: c_int,
+            akid: *mut c_void,
+            idp: *mut c_void,
+            idp_flags: c_int,
+            idp_reasons: c_int,
+            crl_number: *mut ASN1_INTEGER,
+            base_crl_number: *mut ASN1_INTEGER,
+            sha1_hash: [c_uchar; 20],
+            issuers: *mut c_void,
+            meth: *const c_void,
+            meth_data: *mut c_void,
+        }
+    }
+}
+
+stack!(stack_st_X509_CRL);
+
+cfg_if! {
+    if #[cfg(any(ossl110, libressl350))] {
+        pub enum X509_CRL_INFO {}
+    } else {
+        #[repr(C)]
+        pub struct X509_CRL_INFO {
+            version: *mut ASN1_INTEGER,
+            sig_alg: *mut X509_ALGOR,
+            pub issuer: *mut X509_NAME,
+            pub lastUpdate: *mut ASN1_TIME,
+            pub nextUpdate: *mut ASN1_TIME,
+            pub revoked: *mut stack_st_X509_REVOKED,
+            extensions: *mut stack_st_X509_EXTENSION,
+            enc: ASN1_ENCODING,
+        }
+    }
+}
+
+cfg_if! {
+    if #[cfg(any(ossl110, libressl350))] {
+        pub enum X509_REVOKED {}
+    } else {
+        #[repr(C)]
+        pub struct X509_REVOKED {
+            pub serialNumber: *mut ASN1_INTEGER,
+            pub revocationDate: *mut ASN1_TIME,
+            pub extensions: *mut stack_st_X509_EXTENSION,
+            issuer: *mut stack_st_GENERAL_NAME,
+            reason: c_int,
+            sequence: c_int,
+        }
+    }
+}
+
+stack!(stack_st_X509_REVOKED);
+
+cfg_if! {
+    if #[cfg(any(ossl110, libressl350))] {
+        pub enum X509_REQ {}
+    } else {
+        #[repr(C)]
+        pub struct X509_REQ {
+            pub req_info: *mut X509_REQ_INFO,
+            sig_alg: *mut c_void,
+            signature: *mut c_void,
+            references: c_int,
+        }
+    }
+}
+
+cfg_if! {
+    if #[cfg(any(ossl110, libressl350))] {
+        pub enum X509_CINF {}
+    } else {
+        #[repr(C)]
+        pub struct X509_CINF {
+            version: *mut c_void,
+            serialNumber: *mut c_void,
+            signature: *mut c_void,
+            issuer: *mut c_void,
+            pub validity: *mut X509_VAL,
+            subject: *mut c_void,
+            key: *mut c_void,
+            issuerUID: *mut c_void,
+            subjectUID: *mut c_void,
+            pub extensions: *mut stack_st_X509_EXTENSION,
+            enc: ASN1_ENCODING,
+        }
+    }
+}
+
+stack!(stack_st_X509);
+
+stack!(stack_st_X509_OBJECT);
+
+stack!(stack_st_X509_LOOKUP);
+
+extern "C" {
+    pub fn X509_verify_cert_error_string(n: c_long) -> *const c_char;
+
+    pub fn X509_sign(x: *mut X509, pkey: *mut EVP_PKEY, md: *const EVP_MD) -> c_int;
+
+    pub fn X509_digest(
+        x: *const X509,
+        digest: *const EVP_MD,
+        buf: *mut c_uchar,
+        len: *mut c_uint,
+    ) -> c_int;
+
+    pub fn X509_REQ_sign(x: *mut X509_REQ, pkey: *mut EVP_PKEY, md: *const EVP_MD) -> c_int;
+}
+
+const_ptr_api! {
+    extern "C" {
+        pub fn i2d_X509_bio(b: *mut BIO, x: #[const_ptr_if(ossl300)] X509) -> c_int;
+        pub fn i2d_X509_REQ_bio(b: *mut BIO, x: #[const_ptr_if(ossl300)] X509_REQ) -> c_int;
+        pub fn i2d_PrivateKey_bio(b: *mut BIO, x: #[const_ptr_if(ossl300)] EVP_PKEY) -> c_int;
+        pub fn i2d_PUBKEY_bio(b: *mut BIO, x: #[const_ptr_if(ossl300)] EVP_PKEY) -> c_int;
+
+        pub fn i2d_PUBKEY(k: #[const_ptr_if(ossl300)] EVP_PKEY, buf: *mut *mut u8) -> c_int;
+        pub fn i2d_RSA_PUBKEY(k: #[const_ptr_if(ossl300)] RSA, buf: *mut *mut u8) -> c_int;
+        pub fn i2d_DSA_PUBKEY(a: #[const_ptr_if(ossl300)] DSA, pp: *mut *mut c_uchar) -> c_int;
+        pub fn i2d_PrivateKey(k: #[const_ptr_if(ossl300)] EVP_PKEY, buf: *mut *mut u8) -> c_int;
+        pub fn i2d_ECPrivateKey(ec_key: #[const_ptr_if(ossl300)] EC_KEY, pp: *mut *mut c_uchar) -> c_int;
+        pub fn i2d_EC_PUBKEY(a: #[const_ptr_if(ossl300)] EC_KEY, pp: *mut *mut c_uchar) -> c_int;
+    }
+}
+extern "C" {
+    pub fn d2i_PUBKEY(k: *mut *mut EVP_PKEY, buf: *mut *const u8, len: c_long) -> *mut EVP_PKEY;
+    pub fn d2i_RSA_PUBKEY(k: *mut *mut RSA, buf: *mut *const u8, len: c_long) -> *mut RSA;
+    pub fn d2i_DSA_PUBKEY(k: *mut *mut DSA, pp: *mut *const c_uchar, length: c_long) -> *mut DSA;
+    pub fn d2i_EC_PUBKEY(
+        a: *mut *mut EC_KEY,
+        pp: *mut *const c_uchar,
+        length: c_long,
+    ) -> *mut EC_KEY;
+
+    pub fn d2i_ECPrivateKey(
+        k: *mut *mut EC_KEY,
+        pp: *mut *const c_uchar,
+        length: c_long,
+    ) -> *mut EC_KEY;
+}
+
+const_ptr_api! {
+    extern "C" {
+        #[cfg(any(ossl102, libressl350))]
+        pub fn X509_ALGOR_get0(
+            paobj: *mut #[const_ptr_if(any(ossl110, libressl350))] ASN1_OBJECT,
+            pptype: *mut c_int,
+            ppval: *mut #[const_ptr_if(any(ossl110, libressl350))] c_void,
+            alg: #[const_ptr_if(any(ossl110, libressl350))] X509_ALGOR,
+        );
+    }
+}
+
+extern "C" {
+    pub fn X509_gmtime_adj(time: *mut ASN1_TIME, adj: c_long) -> *mut ASN1_TIME;
+
+    pub fn X509_to_X509_REQ(x: *mut X509, pkey: *mut EVP_PKEY, md: *const EVP_MD) -> *mut X509_REQ;
+
+    pub fn X509_ALGOR_free(x: *mut X509_ALGOR);
+
+    pub fn X509_REVOKED_new() -> *mut X509_REVOKED;
+    pub fn X509_REVOKED_free(x: *mut X509_REVOKED);
+}
+const_ptr_api! {
+    extern "C" {
+        #[cfg(any(ossl110, libressl270))]
+        pub fn X509_REVOKED_dup(rev: #[const_ptr_if(ossl300)] X509_REVOKED) -> *mut X509_REVOKED;
+    }
+}
+
+extern "C" {
+    pub fn d2i_X509_REVOKED(
+        a: *mut *mut X509_REVOKED,
+        pp: *mut *const c_uchar,
+        length: c_long,
+    ) -> *mut X509_REVOKED;
+}
+const_ptr_api! {
+    extern "C" {
+        pub fn i2d_X509_REVOKED(x: #[const_ptr_if(ossl300)] X509_REVOKED, buf: *mut *mut u8) -> c_int;
+    }
+}
+extern "C" {
+    pub fn X509_CRL_new() -> *mut X509_CRL;
+    pub fn X509_CRL_free(x: *mut X509_CRL);
+    pub fn d2i_X509_CRL(
+        a: *mut *mut X509_CRL,
+        pp: *mut *const c_uchar,
+        length: c_long,
+    ) -> *mut X509_CRL;
+}
+const_ptr_api! {
+    extern "C" {
+        pub fn i2d_X509_CRL(x: #[const_ptr_if(ossl300)] X509_CRL, buf: *mut *mut u8) -> c_int;
+        #[cfg(any(ossl110, libressl270))]
+        pub fn X509_CRL_dup(x: #[const_ptr_if(ossl300)] X509_CRL) -> *mut X509_CRL;
+    }
+}
+
+extern "C" {
+    pub fn X509_REQ_new() -> *mut X509_REQ;
+    pub fn X509_REQ_free(x: *mut X509_REQ);
+    pub fn d2i_X509_REQ(
+        a: *mut *mut X509_REQ,
+        pp: *mut *const c_uchar,
+        length: c_long,
+    ) -> *mut X509_REQ;
+}
+const_ptr_api! {
+    extern "C" {
+        pub fn i2d_X509_REQ(x: #[const_ptr_if(ossl300)] X509_REQ, buf: *mut *mut u8) -> c_int;
+
+        #[cfg(any(ossl102, libressl273))]
+        pub fn X509_get0_signature(
+            psig: *mut #[const_ptr_if(any(ossl110, libressl273))] ASN1_BIT_STRING,
+            palg: *mut #[const_ptr_if(any(ossl110, libressl273))] X509_ALGOR,
+            x: *const X509,
+        );
+
+        #[cfg(any(ossl110, libressl270))]
+        pub fn X509_REQ_dup(x: #[const_ptr_if(ossl300)] X509_REQ) -> *mut X509_REQ;
+    }
+}
+extern "C" {
+    #[cfg(ossl102)]
+    pub fn X509_get_signature_nid(x: *const X509) -> c_int;
+
+    pub fn X509_EXTENSION_free(ext: *mut X509_EXTENSION);
+
+    pub fn X509_NAME_ENTRY_free(x: *mut X509_NAME_ENTRY);
+
+    pub fn X509_NAME_new() -> *mut X509_NAME;
+    pub fn X509_NAME_free(x: *mut X509_NAME);
+
+    pub fn X509_new() -> *mut X509;
+    pub fn X509_free(x: *mut X509);
+}
+const_ptr_api! {
+    extern "C" {
+        pub fn i2d_X509(x: #[const_ptr_if(ossl300)] X509, buf: *mut *mut u8) -> c_int;
+        #[cfg(any(ossl110, libressl270))]
+        pub fn X509_NAME_dup(x: #[const_ptr_if(ossl300)] X509_NAME) -> *mut X509_NAME;
+        #[cfg(any(ossl110, libressl270))]
+        pub fn X509_dup(x: #[const_ptr_if(ossl300)] X509) -> *mut X509;
+        #[cfg(any(ossl101, libressl350))]
+        pub fn X509_NAME_add_entry(
+            name: *mut X509_NAME,
+            ne: #[const_ptr_if(any(ossl110, libressl))] X509_NAME_ENTRY,
+            loc: c_int,
+            set: c_int,
+            ) -> c_int;
+    }
+}
+extern "C" {
+    pub fn d2i_X509(a: *mut *mut X509, pp: *mut *const c_uchar, length: c_long) -> *mut X509;
+    pub fn d2i_X509_bio(b: *mut BIO, a: *mut *mut X509) -> *mut X509;
+
+    pub fn X509_get_pubkey(x: *mut X509) -> *mut EVP_PKEY;
+
+    pub fn X509_set_version(x: *mut X509, version: c_long) -> c_int;
+    #[cfg(ossl110)]
+    pub fn X509_get_version(x: *const X509) -> c_long;
+    pub fn X509_set_serialNumber(x: *mut X509, sn: *mut ASN1_INTEGER) -> c_int;
+    pub fn X509_get_serialNumber(x: *mut X509) -> *mut ASN1_INTEGER;
+}
+const_ptr_api! {
+    extern "C" {
+        pub fn X509_set_issuer_name(x: *mut X509, name: #[const_ptr_if(ossl300)] X509_NAME) -> c_int;
+    }
+}
+extern "C" {
+    pub fn X509_issuer_name_hash(x: *mut X509) -> c_ulong;
+    pub fn X509_subject_name_hash(x: *mut X509) -> c_ulong;
+}
+const_ptr_api! {
+    extern "C" {
+        pub fn X509_get_issuer_name(x: #[const_ptr_if(any(ossl110, libressl280))] X509) -> *mut X509_NAME;
+        pub fn X509_set_subject_name(x: *mut X509, name: #[const_ptr_if(ossl300)] X509_NAME) -> c_int;
+        pub fn X509_get_subject_name(x: #[const_ptr_if(any(ossl110, libressl280))] X509) -> *mut X509_NAME;
+    }
+}
+cfg_if! {
+    if #[cfg(any(ossl110, libressl350))] {
+        extern "C" {
+            pub fn X509_set1_notBefore(x: *mut X509, tm: *const ASN1_TIME) -> c_int;
+            pub fn X509_set1_notAfter(x: *mut X509, tm: *const ASN1_TIME) -> c_int;
+        }
+    } else {
+        extern "C" {
+            pub fn X509_set_notBefore(x: *mut X509, tm: *const ASN1_TIME) -> c_int;
+            pub fn X509_set_notAfter(x: *mut X509, tm: *const ASN1_TIME) -> c_int;
+        }
+    }
+}
+extern "C" {
+    #[cfg(any(ossl110, libressl350))]
+    pub fn X509_REQ_get_version(req: *const X509_REQ) -> c_long;
+    pub fn X509_REQ_set_version(req: *mut X509_REQ, version: c_long) -> c_int;
+    #[cfg(any(ossl110, libressl350))]
+    pub fn X509_REQ_get_subject_name(req: *const X509_REQ) -> *mut X509_NAME;
+}
+const_ptr_api! {
+    extern "C" {
+        pub fn X509_REQ_set_subject_name(req: *mut X509_REQ, name: #[const_ptr_if(ossl300)] X509_NAME) -> c_int;
+    }
+}
+extern "C" {
+    pub fn X509_REQ_set_pubkey(req: *mut X509_REQ, pkey: *mut EVP_PKEY) -> c_int;
+    pub fn X509_REQ_get_pubkey(req: *mut X509_REQ) -> *mut EVP_PKEY;
+    pub fn X509_REQ_get_extensions(req: *mut X509_REQ) -> *mut stack_st_X509_EXTENSION;
+}
+const_ptr_api! {
+    extern "C" {
+        pub fn X509_REQ_add_extensions(req: *mut X509_REQ, exts: #[const_ptr_if(ossl300)] stack_st_X509_EXTENSION)
+            -> c_int;
+    }
+}
+extern "C" {
+    pub fn X509_set_pubkey(x: *mut X509, pkey: *mut EVP_PKEY) -> c_int;
+    pub fn X509_REQ_verify(req: *mut X509_REQ, pkey: *mut EVP_PKEY) -> c_int;
+    #[cfg(any(ossl110, libressl273))]
+    pub fn X509_getm_notBefore(x: *const X509) -> *mut ASN1_TIME;
+    #[cfg(any(ossl110, libressl273))]
+    pub fn X509_getm_notAfter(x: *const X509) -> *mut ASN1_TIME;
+    #[cfg(any(ossl110, libressl273))]
+    pub fn X509_up_ref(x: *mut X509) -> c_int;
+
+    #[cfg(any(ossl110, libressl270))]
+    pub fn X509_REVOKED_get0_serialNumber(req: *const X509_REVOKED) -> *const ASN1_INTEGER;
+    #[cfg(any(ossl110, libressl270))]
+    pub fn X509_REVOKED_get0_revocationDate(req: *const X509_REVOKED) -> *const ASN1_TIME;
+    #[cfg(any(ossl110, libressl270))]
+    pub fn X509_REVOKED_get0_extensions(r: *const X509_REVOKED) -> *const stack_st_X509_EXTENSION;
+
+    pub fn X509_REVOKED_set_serialNumber(r: *mut X509_REVOKED, serial: *mut ASN1_INTEGER) -> c_int;
+    pub fn X509_REVOKED_set_revocationDate(r: *mut X509_REVOKED, tm: *mut ASN1_TIME) -> c_int;
+
+    pub fn X509_CRL_sign(x: *mut X509_CRL, pkey: *mut EVP_PKEY, md: *const EVP_MD) -> c_int;
+    pub fn X509_CRL_digest(
+        x: *const X509_CRL,
+        digest: *const EVP_MD,
+        md: *mut c_uchar,
+        len: *mut c_uint,
+    ) -> c_int;
+    pub fn X509_CRL_verify(crl: *mut X509_CRL, pkey: *mut EVP_PKEY) -> c_int;
+    pub fn X509_CRL_get0_by_cert(
+        x: *mut X509_CRL,
+        ret: *mut *mut X509_REVOKED,
+        cert: *mut X509,
+    ) -> c_int;
+}
+const_ptr_api! {
+    extern "C" {
+        pub fn X509_CRL_get0_by_serial(
+            x: *mut X509_CRL,
+            ret: *mut *mut X509_REVOKED,
+            serial: #[const_ptr_if(ossl300)] ASN1_INTEGER,
+        ) -> c_int;
+    }
+}
+
+extern "C" {
+    #[cfg(any(ossl110, libressl281))]
+    pub fn X509_CRL_get_REVOKED(crl: *mut X509_CRL) -> *mut stack_st_X509_REVOKED;
+    #[cfg(any(ossl110, libressl281))]
+    pub fn X509_CRL_get0_nextUpdate(x: *const X509_CRL) -> *const ASN1_TIME;
+    #[cfg(any(ossl110, libressl281))]
+    pub fn X509_CRL_get0_lastUpdate(x: *const X509_CRL) -> *const ASN1_TIME;
+    #[cfg(any(ossl110, libressl281))]
+    pub fn X509_CRL_get_issuer(x: *const X509_CRL) -> *mut X509_NAME;
+
+    #[cfg(ossl110)]
+    pub fn X509_get0_extensions(req: *const X509) -> *const stack_st_X509_EXTENSION;
+
+    pub fn X509_CRL_set_version(crl: *mut X509_CRL, version: c_long) -> c_int;
+}
+const_ptr_api! {
+    extern "C" {
+        pub fn X509_CRL_set_issuer_name(crl: *mut X509_CRL, name: #[const_ptr_if(ossl300)] X509_NAME) -> c_int;
+    }
+}
+extern "C" {
+    pub fn X509_CRL_sort(crl: *mut X509_CRL) -> c_int;
+
+    #[cfg(any(ossl110, libressl270))]
+    pub fn X509_CRL_up_ref(crl: *mut X509_CRL) -> c_int;
+    pub fn X509_CRL_add0_revoked(crl: *mut X509_CRL, rev: *mut X509_REVOKED) -> c_int;
+}
+cfg_if! {
+    if #[cfg(any(ossl110, libressl270))] {
+        extern "C" {
+            pub fn X509_CRL_set1_lastUpdate(crl: *mut X509_CRL, tm: *const ASN1_TIME) -> c_int;
+            pub fn X509_CRL_set1_nextUpdate(crl: *mut X509_CRL, tm: *const ASN1_TIME) -> c_int;
+        }
+    } else {
+        // libressl270 kept them, ossl110 "#define"s them to the variants above
+        extern "C" {
+            pub fn X509_CRL_set_lastUpdate(crl: *mut X509_CRL, tm: *const ASN1_TIME) -> c_int;
+            pub fn X509_CRL_set_nextUpdate(crl: *mut X509_CRL, tm: *const ASN1_TIME) -> c_int;
+        }
+    }
+}
+
+const_ptr_api! {
+    extern "C" {
+        pub fn X509_NAME_entry_count(n: #[const_ptr_if(any(ossl110, libressl280))] X509_NAME) -> c_int;
+        pub fn X509_NAME_get_index_by_NID(n: #[const_ptr_if(any(ossl300, libressl280))] X509_NAME, nid: c_int, last_pos: c_int) -> c_int;
+        pub fn X509_NAME_get_entry(n: #[const_ptr_if(any(ossl110, libressl280))] X509_NAME, loc: c_int) -> *mut X509_NAME_ENTRY;
+        pub fn X509_NAME_add_entry_by_NID(
+            x: *mut X509_NAME,
+            field: c_int,
+            ty: c_int,
+            bytes: #[const_ptr_if(any(ossl110, libressl280))] c_uchar,
+            len: c_int,
+            loc: c_int,
+            set: c_int,
+        ) -> c_int;
+        pub fn i2d_X509_NAME(n: #[const_ptr_if(ossl300)] X509_NAME, buf: *mut *mut u8) -> c_int;
+        pub fn X509_NAME_ENTRY_get_object(ne: #[const_ptr_if(any(ossl110, libressl280))] X509_NAME_ENTRY) -> *mut ASN1_OBJECT;
+        pub fn X509_NAME_ENTRY_get_data(ne: #[const_ptr_if(any(ossl110, libressl280))] X509_NAME_ENTRY) -> *mut ASN1_STRING;
+    }
+}
+extern "C" {
+    pub fn X509_NAME_add_entry_by_txt(
+        x: *mut X509_NAME,
+        field: *const c_char,
+        ty: c_int,
+        bytes: *const c_uchar,
+        len: c_int,
+        loc: c_int,
+        set: c_int,
+    ) -> c_int;
+    pub fn d2i_X509_NAME(
+        n: *mut *mut X509_NAME,
+        pp: *mut *const c_uchar,
+        length: c_long,
+    ) -> *mut X509_NAME;
+}
+
+// "raw" X509_EXTENSION related functions
+extern "C" {
+    // in X509
+    pub fn X509_delete_ext(x: *mut X509, loc: c_int) -> *mut X509_EXTENSION;
+    pub fn X509_add_ext(x: *mut X509, ext: *mut X509_EXTENSION, loc: c_int) -> c_int;
+    pub fn X509_add1_ext_i2d(
+        x: *mut X509,
+        nid: c_int,
+        value: *mut c_void,
+        crit: c_int,
+        flags: c_ulong,
+    ) -> c_int;
+    // in X509_CRL
+    pub fn X509_CRL_delete_ext(x: *mut X509_CRL, loc: c_int) -> *mut X509_EXTENSION;
+    pub fn X509_CRL_add_ext(x: *mut X509_CRL, ext: *mut X509_EXTENSION, loc: c_int) -> c_int;
+    pub fn X509_CRL_add1_ext_i2d(
+        x: *mut X509_CRL,
+        nid: c_int,
+        value: *mut c_void,
+        crit: c_int,
+        flags: c_ulong,
+    ) -> c_int;
+    // in X509_REVOKED
+    pub fn X509_REVOKED_delete_ext(x: *mut X509_REVOKED, loc: c_int) -> *mut X509_EXTENSION;
+    pub fn X509_REVOKED_add_ext(
+        x: *mut X509_REVOKED,
+        ext: *mut X509_EXTENSION,
+        loc: c_int,
+    ) -> c_int;
+    pub fn X509_REVOKED_add1_ext_i2d(
+        x: *mut X509_REVOKED,
+        nid: c_int,
+        value: *mut c_void,
+        crit: c_int,
+        flags: c_ulong,
+    ) -> c_int;
+    // X509_EXTENSION stack
+    // - these getters always used *const STACK
+    pub fn X509v3_get_ext_count(x: *const stack_st_X509_EXTENSION) -> c_int;
+    pub fn X509v3_get_ext_by_NID(
+        x: *const stack_st_X509_EXTENSION,
+        nid: c_int,
+        lastpos: c_int,
+    ) -> c_int;
+    pub fn X509v3_get_ext_by_critical(
+        x: *const stack_st_X509_EXTENSION,
+        crit: c_int,
+        lastpos: c_int,
+    ) -> c_int;
+    pub fn X509v3_get_ext(x: *const stack_st_X509_EXTENSION, loc: c_int) -> *mut X509_EXTENSION;
+    pub fn X509v3_delete_ext(x: *mut stack_st_X509_EXTENSION, loc: c_int) -> *mut X509_EXTENSION;
+    pub fn X509v3_add_ext(
+        x: *mut *mut stack_st_X509_EXTENSION,
+        ex: *mut X509_EXTENSION,
+        loc: c_int,
+    ) -> *mut stack_st_X509_EXTENSION;
+    // - X509V3_add1_i2d in x509v3.rs
+    // X509_EXTENSION itself
+    pub fn X509_EXTENSION_create_by_NID(
+        ex: *mut *mut X509_EXTENSION,
+        nid: c_int,
+        crit: c_int,
+        data: *mut ASN1_OCTET_STRING,
+    ) -> *mut X509_EXTENSION;
+    pub fn X509_EXTENSION_set_critical(ex: *mut X509_EXTENSION, crit: c_int) -> c_int;
+    pub fn X509_EXTENSION_set_data(ex: *mut X509_EXTENSION, data: *mut ASN1_OCTET_STRING) -> c_int;
+    pub fn X509_EXTENSION_get_object(ext: *mut X509_EXTENSION) -> *mut ASN1_OBJECT;
+    pub fn X509_EXTENSION_get_data(ext: *mut X509_EXTENSION) -> *mut ASN1_OCTET_STRING;
+}
+
+const_ptr_api! {
+    extern "C" {
+        pub fn i2d_X509_EXTENSION(ext: #[const_ptr_if(ossl300)] X509_EXTENSION, pp: *mut *mut c_uchar) -> c_int;
+    }
+}
+
+const_ptr_api! {
+    extern "C" {
+        // in X509
+        pub fn X509_get_ext_count(x: #[const_ptr_if(any(ossl110, libressl280))] X509) -> c_int;
+        pub fn X509_get_ext_by_NID(x: #[const_ptr_if(any(ossl110, libressl280))] X509, nid: c_int, lastpos: c_int) -> c_int;
+        pub fn X509_get_ext_by_OBJ(x: #[const_ptr_if(any(ossl110, libressl280))] X509, obj: #[const_ptr_if(any(ossl110, libressl280))] ASN1_OBJECT, lastpos: c_int) -> c_int;
+        pub fn X509_get_ext_by_critical(x: #[const_ptr_if(any(ossl110, libressl280))] X509, crit: c_int, lastpos: c_int) -> c_int;
+        pub fn X509_get_ext(x: #[const_ptr_if(any(ossl110, libressl280))] X509, loc: c_int) -> *mut X509_EXTENSION;
+        pub fn X509_get_ext_d2i(
+            x: #[const_ptr_if(any(ossl110, libressl280))] X509,
+            nid: c_int,
+            crit: *mut c_int,
+            idx: *mut c_int,
+        ) -> *mut c_void;
+        // in X509_CRL
+        pub fn X509_CRL_get_ext_count(x: #[const_ptr_if(any(ossl110, libressl280))] X509_CRL) -> c_int;
+        pub fn X509_CRL_get_ext_by_NID(x: #[const_ptr_if(any(ossl110, libressl280))] X509_CRL, nid: c_int, lastpos: c_int) -> c_int;
+        pub fn X509_CRL_get_ext_by_OBJ(x: #[const_ptr_if(any(ossl110, libressl280))] X509_CRL, obj: #[const_ptr_if(any(ossl110, libressl280))] ASN1_OBJECT, lastpos: c_int) -> c_int;
+        pub fn X509_CRL_get_ext_by_critical(x: #[const_ptr_if(any(ossl110, libressl280))] X509_CRL, crit: c_int, lastpos: c_int) -> c_int;
+        pub fn X509_CRL_get_ext(x: #[const_ptr_if(any(ossl110, libressl280))] X509_CRL, loc: c_int) -> *mut X509_EXTENSION;
+        pub fn X509_CRL_get_ext_d2i(
+            x: #[const_ptr_if(any(ossl110, libressl280))] X509_CRL,
+            nid: c_int,
+            crit: *mut c_int,
+            idx: *mut c_int,
+        ) -> *mut c_void;
+        // in X509_REVOKED
+        pub fn X509_REVOKED_get_ext_count(x: #[const_ptr_if(any(ossl110, libressl280))] X509_REVOKED) -> c_int;
+        pub fn X509_REVOKED_get_ext_by_NID(x: #[const_ptr_if(any(ossl110, libressl280))] X509_REVOKED, nid: c_int, lastpos: c_int) -> c_int;
+        pub fn X509_REVOKED_get_ext_by_OBJ(x: #[const_ptr_if(any(ossl110, libressl280))] X509_REVOKED, obj: #[const_ptr_if(any(ossl110, libressl280))] ASN1_OBJECT, lastpos: c_int) -> c_int;
+        pub fn X509_REVOKED_get_ext_by_critical(x: #[const_ptr_if(any(ossl110, libressl280))] X509_REVOKED, crit: c_int, lastpos: c_int) -> c_int;
+        pub fn X509_REVOKED_get_ext(x: #[const_ptr_if(any(ossl110, libressl280))] X509_REVOKED, loc: c_int) -> *mut X509_EXTENSION;
+        pub fn X509_REVOKED_get_ext_d2i(
+            x: #[const_ptr_if(any(ossl110, libressl280))] X509_REVOKED,
+            nid: c_int,
+            crit: *mut c_int,
+            idx: *mut c_int,
+        ) -> *mut c_void;
+        // X509_EXTENSION stack
+        pub fn X509v3_get_ext_by_OBJ(x: *const stack_st_X509_EXTENSION, obj: #[const_ptr_if(any(ossl110, libressl280))] ASN1_OBJECT, lastpos: c_int) -> c_int;
+        // X509_EXTENSION itself
+        pub fn X509_EXTENSION_create_by_OBJ(ex: *mut *mut X509_EXTENSION, obj: #[const_ptr_if(any(ossl110, libressl280))] ASN1_OBJECT, crit: c_int, data: *mut ASN1_OCTET_STRING) -> *mut X509_EXTENSION;
+        pub fn X509_EXTENSION_set_object(ex: *mut X509_EXTENSION, obj: #[const_ptr_if(any(ossl110, libressl280))] ASN1_OBJECT) -> c_int;
+        pub fn X509_EXTENSION_get_critical(ex: #[const_ptr_if(any(ossl110, libressl280))] X509_EXTENSION) -> c_int;
+    }
+}
+
+extern "C" {
+    pub fn X509_verify_cert(ctx: *mut X509_STORE_CTX) -> c_int;
+}
+
+const_ptr_api! {
+    extern "C" {
+        #[cfg(any(ossl110, libressl270))]
+        pub fn X509_STORE_get0_objects(ctx: #[const_ptr_if(ossl300)] X509_STORE) -> *mut stack_st_X509_OBJECT;
+    }
+}
+#[cfg(any(ossl110, libressl270))]
+extern "C" {
+    pub fn X509_OBJECT_get0_X509(x: *const X509_OBJECT) -> *mut X509;
+}
+
+cfg_if! {
+    if #[cfg(any(ossl110, libressl350))] {
+        extern "C" {
+            pub fn X509_OBJECT_free(a: *mut X509_OBJECT);
+        }
+    } else {
+        extern "C" {
+            pub fn X509_OBJECT_free_contents(a: *mut X509_OBJECT);
+        }
+    }
+}
+
+extern "C" {
+    pub fn X509_get_default_cert_file_env() -> *const c_char;
+    pub fn X509_get_default_cert_file() -> *const c_char;
+    pub fn X509_get_default_cert_dir_env() -> *const c_char;
+    pub fn X509_get_default_cert_dir() -> *const c_char;
+}
+
+extern "C" {
+    pub fn X509_cmp(a: *const X509, b: *const X509) -> c_int;
+    pub fn X509_NAME_cmp(a: *const X509_NAME, b: *const X509_NAME) -> c_int;
+    pub fn X509_issuer_and_serial_cmp(a: *const X509, b: *const X509) -> c_int;
+    pub fn X509_issuer_name_cmp(a: *const X509, b: *const X509) -> c_int;
+    pub fn X509_subject_name_cmp(a: *const X509, b: *const X509) -> c_int;
+    pub fn X509_CRL_cmp(a: *const X509_CRL, b: *const X509_CRL) -> c_int;
+    pub fn X509_CRL_match(a: *const X509_CRL, b: *const X509_CRL) -> c_int;
+}
+
+extern "C" {
+    pub fn X509_print(bio: *mut BIO, x509: *mut X509) -> c_int;
+    pub fn X509_REQ_print(bio: *mut BIO, req: *mut X509_REQ) -> c_int;
+}
+
+#[repr(C)]
+pub struct X509_PURPOSE {
+    pub purpose: c_int,
+    pub trust: c_int, // Default trust ID
+    pub flags: c_int,
+    pub check_purpose:
+        Option<unsafe extern "C" fn(*const X509_PURPOSE, *const X509, c_int) -> c_int>,
+    pub name: *mut c_char,
+    pub sname: *mut c_char,
+    pub usr_data: *mut c_void,
+}
+
+const_ptr_api! {
+    extern "C" {
+        pub fn X509_PURPOSE_get_by_sname(sname: #[const_ptr_if(any(ossl110, libressl280))] c_char) -> c_int;
+        pub fn X509_PURPOSE_get0(idx: c_int) -> *mut X509_PURPOSE;
+    }
+}
diff --git a/vendor/openssl-sys/src/handwritten/x509_vfy.rs b/vendor/openssl-sys/src/handwritten/x509_vfy.rs
new file mode 100644
index 000000000..9adf63fa0
--- /dev/null
+++ b/vendor/openssl-sys/src/handwritten/x509_vfy.rs
@@ -0,0 +1,132 @@
+use super::super::*;
+use libc::*;
+
+#[cfg(any(libressl, all(ossl102, not(ossl110))))]
+pub enum X509_VERIFY_PARAM_ID {}
+
+extern "C" {
+    #[cfg(ossl110)]
+    pub fn X509_LOOKUP_meth_free(method: *mut X509_LOOKUP_METHOD);
+}
+
+extern "C" {
+    pub fn X509_LOOKUP_free(ctx: *mut X509_LOOKUP);
+    pub fn X509_LOOKUP_hash_dir() -> *mut X509_LOOKUP_METHOD;
+    pub fn X509_LOOKUP_file() -> *mut X509_LOOKUP_METHOD;
+    pub fn X509_LOOKUP_ctrl(
+        ctx: *mut X509_LOOKUP,
+        cmd: c_int,
+        argc: *const c_char,
+        argl: c_long,
+        ret: *mut *mut c_char,
+    ) -> c_int;
+    pub fn X509_load_cert_file(ctx: *mut X509_LOOKUP, file: *const c_char, _type: c_int) -> c_int;
+    pub fn X509_load_crl_file(ctx: *mut X509_LOOKUP, file: *const c_char, _type: c_int) -> c_int;
+}
+
+extern "C" {
+    pub fn X509_STORE_new() -> *mut X509_STORE;
+    pub fn X509_STORE_free(store: *mut X509_STORE);
+
+    pub fn X509_STORE_CTX_new() -> *mut X509_STORE_CTX;
+
+    pub fn X509_STORE_CTX_free(ctx: *mut X509_STORE_CTX);
+    pub fn X509_STORE_CTX_init(
+        ctx: *mut X509_STORE_CTX,
+        store: *mut X509_STORE,
+        x509: *mut X509,
+        chain: *mut stack_st_X509,
+    ) -> c_int;
+    pub fn X509_STORE_CTX_cleanup(ctx: *mut X509_STORE_CTX);
+
+    pub fn X509_STORE_add_cert(store: *mut X509_STORE, x: *mut X509) -> c_int;
+
+    pub fn X509_STORE_add_lookup(
+        store: *mut X509_STORE,
+        meth: *mut X509_LOOKUP_METHOD,
+    ) -> *mut X509_LOOKUP;
+
+    pub fn X509_STORE_set_default_paths(store: *mut X509_STORE) -> c_int;
+    pub fn X509_STORE_set_flags(store: *mut X509_STORE, flags: c_ulong) -> c_int;
+    pub fn X509_STORE_set_purpose(ctx: *mut X509_STORE, purpose: c_int) -> c_int;
+    pub fn X509_STORE_set_trust(ctx: *mut X509_STORE, trust: c_int) -> c_int;
+
+}
+
+const_ptr_api! {
+    extern "C" {
+        pub fn X509_STORE_set1_param(store: *mut X509_STORE, pm: #[const_ptr_if(ossl300)] X509_VERIFY_PARAM) -> c_int;
+    }
+}
+
+const_ptr_api! {
+    extern "C" {
+        pub fn X509_STORE_CTX_get_ex_data(ctx: #[const_ptr_if(ossl300)] X509_STORE_CTX, idx: c_int) -> *mut c_void;
+        pub fn X509_STORE_CTX_get_error(ctx: #[const_ptr_if(ossl300)] X509_STORE_CTX) -> c_int;
+        pub fn X509_STORE_CTX_get_error_depth(ctx: #[const_ptr_if(ossl300)] X509_STORE_CTX) -> c_int;
+        pub fn X509_STORE_CTX_get_current_cert(ctx: #[const_ptr_if(ossl300)] X509_STORE_CTX) -> *mut X509;
+    }
+}
+extern "C" {
+    pub fn X509_STORE_CTX_set_error(ctx: *mut X509_STORE_CTX, error: c_int);
+}
+cfg_if! {
+    if #[cfg(any(ossl110, libressl350))] {
+        const_ptr_api! {
+            extern "C" {
+                pub fn X509_STORE_CTX_get0_chain(ctx: #[const_ptr_if(ossl300)] X509_STORE_CTX) -> *mut stack_st_X509;
+            }
+        }
+    } else {
+        extern "C" {
+            pub fn X509_STORE_CTX_get_chain(ctx: *mut X509_STORE_CTX) -> *mut stack_st_X509;
+        }
+    }
+}
+
+extern "C" {
+    #[cfg(any(ossl102, libressl261))]
+    pub fn X509_VERIFY_PARAM_new() -> *mut X509_VERIFY_PARAM;
+    #[cfg(any(ossl102, libressl261))]
+    pub fn X509_VERIFY_PARAM_free(param: *mut X509_VERIFY_PARAM);
+
+    #[cfg(any(ossl102, libressl261))]
+    pub fn X509_VERIFY_PARAM_set_flags(param: *mut X509_VERIFY_PARAM, flags: c_ulong) -> c_int;
+    #[cfg(any(ossl102, libressl261))]
+    pub fn X509_VERIFY_PARAM_clear_flags(param: *mut X509_VERIFY_PARAM, flags: c_ulong) -> c_int;
+
+    #[cfg(any(ossl102, libressl261))]
+    pub fn X509_VERIFY_PARAM_set_time(param: *mut X509_VERIFY_PARAM, t: time_t);
+
+    #[cfg(any(ossl102, libressl261))]
+    pub fn X509_VERIFY_PARAM_set_depth(param: *mut X509_VERIFY_PARAM, depth: c_int);
+}
+const_ptr_api! {
+    extern "C" {
+        #[cfg(any(ossl102, libressl261))]
+        pub fn X509_VERIFY_PARAM_get_flags(param: #[const_ptr_if(ossl300)] X509_VERIFY_PARAM) -> c_ulong;
+    }
+}
+
+extern "C" {
+    #[cfg(any(ossl102, libressl261))]
+    pub fn X509_VERIFY_PARAM_set1_host(
+        param: *mut X509_VERIFY_PARAM,
+        name: *const c_char,
+        namelen: size_t,
+    ) -> c_int;
+    #[cfg(any(ossl102, libressl261))]
+    pub fn X509_VERIFY_PARAM_set_hostflags(param: *mut X509_VERIFY_PARAM, flags: c_uint);
+    #[cfg(any(ossl102, libressl261))]
+    pub fn X509_VERIFY_PARAM_set1_ip(
+        param: *mut X509_VERIFY_PARAM,
+        ip: *const c_uchar,
+        iplen: size_t,
+    ) -> c_int;
+    #[cfg(ossl110)]
+    pub fn X509_VERIFY_PARAM_set_auth_level(param: *mut X509_VERIFY_PARAM, lvl: c_int);
+    #[cfg(ossl110)]
+    pub fn X509_VERIFY_PARAM_get_auth_level(param: *const X509_VERIFY_PARAM) -> c_int;
+    #[cfg(ossl102)]
+    pub fn X509_VERIFY_PARAM_set_purpose(param: *mut X509_VERIFY_PARAM, purpose: c_int) -> c_int;
+}
diff --git a/vendor/openssl-sys/src/handwritten/x509v3.rs b/vendor/openssl-sys/src/handwritten/x509v3.rs
new file mode 100644
index 000000000..4a15f3df5
--- /dev/null
+++ b/vendor/openssl-sys/src/handwritten/x509v3.rs
@@ -0,0 +1,132 @@
+use super::super::*;
+use libc::*;
+
+pub enum CONF_METHOD {}
+
+extern "C" {
+    pub fn GENERAL_NAME_new() -> *mut GENERAL_NAME;
+    pub fn GENERAL_NAME_free(name: *mut GENERAL_NAME);
+}
+
+#[repr(C)]
+pub struct ACCESS_DESCRIPTION {
+    pub method: *mut ASN1_OBJECT,
+    pub location: *mut GENERAL_NAME,
+}
+
+stack!(stack_st_ACCESS_DESCRIPTION);
+
+extern "C" {
+    pub fn ACCESS_DESCRIPTION_free(ad: *mut ACCESS_DESCRIPTION);
+}
+
+#[repr(C)]
+pub struct AUTHORITY_KEYID {
+    pub keyid: *mut ASN1_OCTET_STRING,
+    pub issuer: *mut stack_st_GENERAL_NAME,
+    pub serial: *mut ASN1_INTEGER,
+}
+
+extern "C" {
+    pub fn AUTHORITY_KEYID_free(akid: *mut AUTHORITY_KEYID);
+}
+
+const_ptr_api! {
+    extern "C" {
+        pub fn X509V3_EXT_nconf_nid(
+            conf: *mut CONF,
+            ctx: *mut X509V3_CTX,
+            ext_nid: c_int,
+            value: #[const_ptr_if(any(ossl110, libressl280))] c_char,
+        ) -> *mut X509_EXTENSION;
+        pub fn X509V3_EXT_nconf(
+            conf: *mut CONF,
+            ctx: *mut X509V3_CTX,
+            name: #[const_ptr_if(any(ossl110, libressl280))] c_char,
+            value: #[const_ptr_if(any(ossl110, libressl280))] c_char,
+        ) -> *mut X509_EXTENSION;
+    }
+}
+
+extern "C" {
+    pub fn X509_check_issued(issuer: *mut X509, subject: *mut X509) -> c_int;
+    pub fn X509_verify(req: *mut X509, pkey: *mut EVP_PKEY) -> c_int;
+
+    pub fn X509V3_set_nconf(ctx: *mut X509V3_CTX, conf: *mut CONF);
+
+    pub fn X509V3_set_ctx(
+        ctx: *mut X509V3_CTX,
+        issuer: *mut X509,
+        subject: *mut X509,
+        req: *mut X509_REQ,
+        crl: *mut X509_CRL,
+        flags: c_int,
+    );
+
+    pub fn X509_get1_ocsp(x: *mut X509) -> *mut stack_st_OPENSSL_STRING;
+}
+
+const_ptr_api! {
+    extern "C" {
+        pub fn X509V3_get_d2i(
+            x: #[const_ptr_if(any(ossl110, libressl280))] stack_st_X509_EXTENSION,
+            nid: c_int,
+            crit: *mut c_int,
+            idx: *mut c_int,
+        ) -> *mut c_void;
+        pub fn X509V3_extensions_print(out: *mut BIO, title: #[const_ptr_if(any(ossl110, libressl280))] c_char, exts: #[const_ptr_if(any(ossl110, libressl280))] stack_st_X509_EXTENSION, flag: c_ulong, indent: c_int) -> c_int;
+    }
+}
+
+extern "C" {
+    pub fn X509V3_EXT_add_alias(nid_to: c_int, nid_from: c_int) -> c_int;
+    pub fn X509V3_EXT_d2i(ext: *mut X509_EXTENSION) -> *mut c_void;
+    pub fn X509V3_EXT_i2d(ext_nid: c_int, crit: c_int, ext: *mut c_void) -> *mut X509_EXTENSION;
+    pub fn X509V3_add1_i2d(
+        x: *mut *mut stack_st_X509_EXTENSION,
+        nid: c_int,
+        value: *mut c_void,
+        crit: c_int,
+        flags: c_ulong,
+    ) -> c_int;
+    pub fn X509V3_EXT_print(
+        out: *mut BIO,
+        ext: *mut X509_EXTENSION,
+        flag: c_ulong,
+        indent: c_int,
+    ) -> c_int;
+
+    #[cfg(ossl110)]
+    pub fn X509_get_extension_flags(x: *mut X509) -> u32;
+    #[cfg(ossl110)]
+    pub fn X509_get_key_usage(x: *mut X509) -> u32;
+    #[cfg(ossl110)]
+    pub fn X509_get_extended_key_usage(x: *mut X509) -> u32;
+}
+
+#[repr(C)]
+pub struct DIST_POINT_NAME {
+    pub type_: c_int,
+    pub name: DIST_POINT_NAME_st_anon_union,
+    pub dpname: *mut X509_NAME,
+}
+
+#[repr(C)]
+pub union DIST_POINT_NAME_st_anon_union {
+    pub fullname: *mut stack_st_GENERAL_NAME,
+    pub relativename: *mut stack_st_X509_NAME_ENTRY,
+}
+
+#[repr(C)]
+pub struct DIST_POINT {
+    pub distpoint: *mut DIST_POINT_NAME,
+    pub reasons: *mut ASN1_BIT_STRING,
+    pub CRLissuer: *mut stack_st_GENERAL_NAME,
+    pub dp_reasons: c_int,
+}
+stack!(stack_st_DIST_POINT);
+
+extern "C" {
+    pub fn DIST_POINT_free(dist_point: *mut DIST_POINT);
+    pub fn DIST_POINT_NAME_free(dist_point: *mut DIST_POINT_NAME);
+}