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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:26:58 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:26:58 +0000
commit999ae6be3243c7b4a815247199447b53c39a3d65 (patch)
tree1f35b42b5e5f462d35ba452e4dcfa188ce0543fd /ssh-pkcs11.c
parentInitial commit. (diff)
downloadopenssh-999ae6be3243c7b4a815247199447b53c39a3d65.tar.xz
openssh-999ae6be3243c7b4a815247199447b53c39a3d65.zip
Adding upstream version 1:7.9p1.upstream/1%7.9p1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'ssh-pkcs11.c')
-rw-r--r--ssh-pkcs11.c732
1 files changed, 732 insertions, 0 deletions
diff --git a/ssh-pkcs11.c b/ssh-pkcs11.c
new file mode 100644
index 0000000..775de96
--- /dev/null
+++ b/ssh-pkcs11.c
@@ -0,0 +1,732 @@
+/* $OpenBSD: ssh-pkcs11.c,v 1.26 2018/02/07 02:06:51 jsing Exp $ */
+/*
+ * Copyright (c) 2010 Markus Friedl. All rights reserved.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "includes.h"
+
+#ifdef ENABLE_PKCS11
+
+#include <sys/types.h>
+#ifdef HAVE_SYS_TIME_H
+# include <sys/time.h>
+#endif
+#include <stdarg.h>
+#include <stdio.h>
+
+#include <string.h>
+#include <dlfcn.h>
+
+#include "openbsd-compat/sys-queue.h"
+#include "openbsd-compat/openssl-compat.h"
+
+#include <openssl/x509.h>
+
+#define CRYPTOKI_COMPAT
+#include "pkcs11.h"
+
+#include "log.h"
+#include "misc.h"
+#include "sshkey.h"
+#include "ssh-pkcs11.h"
+#include "xmalloc.h"
+
+struct pkcs11_slotinfo {
+ CK_TOKEN_INFO token;
+ CK_SESSION_HANDLE session;
+ int logged_in;
+};
+
+struct pkcs11_provider {
+ char *name;
+ void *handle;
+ CK_FUNCTION_LIST *function_list;
+ CK_INFO info;
+ CK_ULONG nslots;
+ CK_SLOT_ID *slotlist;
+ struct pkcs11_slotinfo *slotinfo;
+ int valid;
+ int refcount;
+ TAILQ_ENTRY(pkcs11_provider) next;
+};
+
+TAILQ_HEAD(, pkcs11_provider) pkcs11_providers;
+
+struct pkcs11_key {
+ struct pkcs11_provider *provider;
+ CK_ULONG slotidx;
+ int (*orig_finish)(RSA *rsa);
+ RSA_METHOD *rsa_method;
+ char *keyid;
+ int keyid_len;
+};
+
+int pkcs11_interactive = 0;
+
+int
+pkcs11_init(int interactive)
+{
+ pkcs11_interactive = interactive;
+ TAILQ_INIT(&pkcs11_providers);
+ return (0);
+}
+
+/*
+ * finalize a provider shared libarary, it's no longer usable.
+ * however, there might still be keys referencing this provider,
+ * so the actuall freeing of memory is handled by pkcs11_provider_unref().
+ * this is called when a provider gets unregistered.
+ */
+static void
+pkcs11_provider_finalize(struct pkcs11_provider *p)
+{
+ CK_RV rv;
+ CK_ULONG i;
+
+ debug("pkcs11_provider_finalize: %p refcount %d valid %d",
+ p, p->refcount, p->valid);
+ if (!p->valid)
+ return;
+ for (i = 0; i < p->nslots; i++) {
+ if (p->slotinfo[i].session &&
+ (rv = p->function_list->C_CloseSession(
+ p->slotinfo[i].session)) != CKR_OK)
+ error("C_CloseSession failed: %lu", rv);
+ }
+ if ((rv = p->function_list->C_Finalize(NULL)) != CKR_OK)
+ error("C_Finalize failed: %lu", rv);
+ p->valid = 0;
+ p->function_list = NULL;
+ dlclose(p->handle);
+}
+
+/*
+ * remove a reference to the provider.
+ * called when a key gets destroyed or when the provider is unregistered.
+ */
+static void
+pkcs11_provider_unref(struct pkcs11_provider *p)
+{
+ debug("pkcs11_provider_unref: %p refcount %d", p, p->refcount);
+ if (--p->refcount <= 0) {
+ if (p->valid)
+ error("pkcs11_provider_unref: %p still valid", p);
+ free(p->slotlist);
+ free(p->slotinfo);
+ free(p);
+ }
+}
+
+/* unregister all providers, keys might still point to the providers */
+void
+pkcs11_terminate(void)
+{
+ struct pkcs11_provider *p;
+
+ while ((p = TAILQ_FIRST(&pkcs11_providers)) != NULL) {
+ TAILQ_REMOVE(&pkcs11_providers, p, next);
+ pkcs11_provider_finalize(p);
+ pkcs11_provider_unref(p);
+ }
+}
+
+/* lookup provider by name */
+static struct pkcs11_provider *
+pkcs11_provider_lookup(char *provider_id)
+{
+ struct pkcs11_provider *p;
+
+ TAILQ_FOREACH(p, &pkcs11_providers, next) {
+ debug("check %p %s", p, p->name);
+ if (!strcmp(provider_id, p->name))
+ return (p);
+ }
+ return (NULL);
+}
+
+/* unregister provider by name */
+int
+pkcs11_del_provider(char *provider_id)
+{
+ struct pkcs11_provider *p;
+
+ if ((p = pkcs11_provider_lookup(provider_id)) != NULL) {
+ TAILQ_REMOVE(&pkcs11_providers, p, next);
+ pkcs11_provider_finalize(p);
+ pkcs11_provider_unref(p);
+ return (0);
+ }
+ return (-1);
+}
+
+/* openssl callback for freeing an RSA key */
+static int
+pkcs11_rsa_finish(RSA *rsa)
+{
+ struct pkcs11_key *k11;
+ int rv = -1;
+
+ if ((k11 = RSA_get_app_data(rsa)) != NULL) {
+ if (k11->orig_finish)
+ rv = k11->orig_finish(rsa);
+ if (k11->provider)
+ pkcs11_provider_unref(k11->provider);
+ RSA_meth_free(k11->rsa_method);
+ free(k11->keyid);
+ free(k11);
+ }
+ return (rv);
+}
+
+/* find a single 'obj' for given attributes */
+static int
+pkcs11_find(struct pkcs11_provider *p, CK_ULONG slotidx, CK_ATTRIBUTE *attr,
+ CK_ULONG nattr, CK_OBJECT_HANDLE *obj)
+{
+ CK_FUNCTION_LIST *f;
+ CK_SESSION_HANDLE session;
+ CK_ULONG nfound = 0;
+ CK_RV rv;
+ int ret = -1;
+
+ f = p->function_list;
+ session = p->slotinfo[slotidx].session;
+ if ((rv = f->C_FindObjectsInit(session, attr, nattr)) != CKR_OK) {
+ error("C_FindObjectsInit failed (nattr %lu): %lu", nattr, rv);
+ return (-1);
+ }
+ if ((rv = f->C_FindObjects(session, obj, 1, &nfound)) != CKR_OK ||
+ nfound != 1) {
+ debug("C_FindObjects failed (nfound %lu nattr %lu): %lu",
+ nfound, nattr, rv);
+ } else
+ ret = 0;
+ if ((rv = f->C_FindObjectsFinal(session)) != CKR_OK)
+ error("C_FindObjectsFinal failed: %lu", rv);
+ return (ret);
+}
+
+/* openssl callback doing the actual signing operation */
+static int
+pkcs11_rsa_private_encrypt(int flen, const u_char *from, u_char *to, RSA *rsa,
+ int padding)
+{
+ struct pkcs11_key *k11;
+ struct pkcs11_slotinfo *si;
+ CK_FUNCTION_LIST *f;
+ CK_OBJECT_HANDLE obj;
+ CK_ULONG tlen = 0;
+ CK_RV rv;
+ CK_OBJECT_CLASS private_key_class = CKO_PRIVATE_KEY;
+ CK_BBOOL true_val = CK_TRUE;
+ CK_MECHANISM mech = {
+ CKM_RSA_PKCS, NULL_PTR, 0
+ };
+ CK_ATTRIBUTE key_filter[] = {
+ {CKA_CLASS, NULL, sizeof(private_key_class) },
+ {CKA_ID, NULL, 0},
+ {CKA_SIGN, NULL, sizeof(true_val) }
+ };
+ char *pin = NULL, prompt[1024];
+ int rval = -1;
+
+ key_filter[0].pValue = &private_key_class;
+ key_filter[2].pValue = &true_val;
+
+ if ((k11 = RSA_get_app_data(rsa)) == NULL) {
+ error("RSA_get_app_data failed for rsa %p", rsa);
+ return (-1);
+ }
+ if (!k11->provider || !k11->provider->valid) {
+ error("no pkcs11 (valid) provider for rsa %p", rsa);
+ return (-1);
+ }
+ f = k11->provider->function_list;
+ si = &k11->provider->slotinfo[k11->slotidx];
+ if ((si->token.flags & CKF_LOGIN_REQUIRED) && !si->logged_in) {
+ if (!pkcs11_interactive) {
+ error("need pin entry%s", (si->token.flags &
+ CKF_PROTECTED_AUTHENTICATION_PATH) ?
+ " on reader keypad" : "");
+ return (-1);
+ }
+ if (si->token.flags & CKF_PROTECTED_AUTHENTICATION_PATH)
+ verbose("Deferring PIN entry to reader keypad.");
+ else {
+ snprintf(prompt, sizeof(prompt),
+ "Enter PIN for '%s': ", si->token.label);
+ pin = read_passphrase(prompt, RP_ALLOW_EOF);
+ if (pin == NULL)
+ return (-1); /* bail out */
+ }
+ rv = f->C_Login(si->session, CKU_USER, (u_char *)pin,
+ (pin != NULL) ? strlen(pin) : 0);
+ if (pin != NULL) {
+ explicit_bzero(pin, strlen(pin));
+ free(pin);
+ }
+ if (rv != CKR_OK && rv != CKR_USER_ALREADY_LOGGED_IN) {
+ error("C_Login failed: %lu", rv);
+ return (-1);
+ }
+ si->logged_in = 1;
+ }
+ key_filter[1].pValue = k11->keyid;
+ key_filter[1].ulValueLen = k11->keyid_len;
+ /* try to find object w/CKA_SIGN first, retry w/o */
+ if (pkcs11_find(k11->provider, k11->slotidx, key_filter, 3, &obj) < 0 &&
+ pkcs11_find(k11->provider, k11->slotidx, key_filter, 2, &obj) < 0) {
+ error("cannot find private key");
+ } else if ((rv = f->C_SignInit(si->session, &mech, obj)) != CKR_OK) {
+ error("C_SignInit failed: %lu", rv);
+ } else {
+ /* XXX handle CKR_BUFFER_TOO_SMALL */
+ tlen = RSA_size(rsa);
+ rv = f->C_Sign(si->session, (CK_BYTE *)from, flen, to, &tlen);
+ if (rv == CKR_OK)
+ rval = tlen;
+ else
+ error("C_Sign failed: %lu", rv);
+ }
+ return (rval);
+}
+
+static int
+pkcs11_rsa_private_decrypt(int flen, const u_char *from, u_char *to, RSA *rsa,
+ int padding)
+{
+ return (-1);
+}
+
+/* redirect private key operations for rsa key to pkcs11 token */
+static int
+pkcs11_rsa_wrap(struct pkcs11_provider *provider, CK_ULONG slotidx,
+ CK_ATTRIBUTE *keyid_attrib, RSA *rsa)
+{
+ struct pkcs11_key *k11;
+ const RSA_METHOD *def = RSA_get_default_method();
+
+ k11 = xcalloc(1, sizeof(*k11));
+ k11->provider = provider;
+ provider->refcount++; /* provider referenced by RSA key */
+ k11->slotidx = slotidx;
+ /* identify key object on smartcard */
+ k11->keyid_len = keyid_attrib->ulValueLen;
+ if (k11->keyid_len > 0) {
+ k11->keyid = xmalloc(k11->keyid_len);
+ memcpy(k11->keyid, keyid_attrib->pValue, k11->keyid_len);
+ }
+ k11->rsa_method = RSA_meth_dup(def);
+ if (k11->rsa_method == NULL)
+ fatal("%s: RSA_meth_dup failed", __func__);
+ k11->orig_finish = RSA_meth_get_finish(def);
+ if (!RSA_meth_set1_name(k11->rsa_method, "pkcs11") ||
+ !RSA_meth_set_priv_enc(k11->rsa_method,
+ pkcs11_rsa_private_encrypt) ||
+ !RSA_meth_set_priv_dec(k11->rsa_method,
+ pkcs11_rsa_private_decrypt) ||
+ !RSA_meth_set_finish(k11->rsa_method, pkcs11_rsa_finish))
+ fatal("%s: setup pkcs11 method failed", __func__);
+ RSA_set_method(rsa, k11->rsa_method);
+ RSA_set_app_data(rsa, k11);
+ return (0);
+}
+
+/* remove trailing spaces */
+static void
+rmspace(u_char *buf, size_t len)
+{
+ size_t i;
+
+ if (!len)
+ return;
+ for (i = len - 1; i > 0; i--)
+ if (i == len - 1 || buf[i] == ' ')
+ buf[i] = '\0';
+ else
+ break;
+}
+
+/*
+ * open a pkcs11 session and login if required.
+ * if pin == NULL we delay login until key use
+ */
+static int
+pkcs11_open_session(struct pkcs11_provider *p, CK_ULONG slotidx, char *pin)
+{
+ CK_RV rv;
+ CK_FUNCTION_LIST *f;
+ CK_SESSION_HANDLE session;
+ int login_required;
+
+ f = p->function_list;
+ login_required = p->slotinfo[slotidx].token.flags & CKF_LOGIN_REQUIRED;
+ if (pin && login_required && !strlen(pin)) {
+ error("pin required");
+ return (-1);
+ }
+ if ((rv = f->C_OpenSession(p->slotlist[slotidx], CKF_RW_SESSION|
+ CKF_SERIAL_SESSION, NULL, NULL, &session))
+ != CKR_OK) {
+ error("C_OpenSession failed: %lu", rv);
+ return (-1);
+ }
+ if (login_required && pin) {
+ rv = f->C_Login(session, CKU_USER,
+ (u_char *)pin, strlen(pin));
+ if (rv != CKR_OK && rv != CKR_USER_ALREADY_LOGGED_IN) {
+ error("C_Login failed: %lu", rv);
+ if ((rv = f->C_CloseSession(session)) != CKR_OK)
+ error("C_CloseSession failed: %lu", rv);
+ return (-1);
+ }
+ p->slotinfo[slotidx].logged_in = 1;
+ }
+ p->slotinfo[slotidx].session = session;
+ return (0);
+}
+
+/*
+ * lookup public keys for token in slot identified by slotidx,
+ * add 'wrapped' public keys to the 'keysp' array and increment nkeys.
+ * keysp points to an (possibly empty) array with *nkeys keys.
+ */
+static int pkcs11_fetch_keys_filter(struct pkcs11_provider *, CK_ULONG,
+ CK_ATTRIBUTE [], CK_ATTRIBUTE [3], struct sshkey ***, int *)
+ __attribute__((__bounded__(__minbytes__,4, 3 * sizeof(CK_ATTRIBUTE))));
+
+static int
+pkcs11_fetch_keys(struct pkcs11_provider *p, CK_ULONG slotidx,
+ struct sshkey ***keysp, int *nkeys)
+{
+ CK_OBJECT_CLASS pubkey_class = CKO_PUBLIC_KEY;
+ CK_OBJECT_CLASS cert_class = CKO_CERTIFICATE;
+ CK_ATTRIBUTE pubkey_filter[] = {
+ { CKA_CLASS, NULL, sizeof(pubkey_class) }
+ };
+ CK_ATTRIBUTE cert_filter[] = {
+ { CKA_CLASS, NULL, sizeof(cert_class) }
+ };
+ CK_ATTRIBUTE pubkey_attribs[] = {
+ { CKA_ID, NULL, 0 },
+ { CKA_MODULUS, NULL, 0 },
+ { CKA_PUBLIC_EXPONENT, NULL, 0 }
+ };
+ CK_ATTRIBUTE cert_attribs[] = {
+ { CKA_ID, NULL, 0 },
+ { CKA_SUBJECT, NULL, 0 },
+ { CKA_VALUE, NULL, 0 }
+ };
+ pubkey_filter[0].pValue = &pubkey_class;
+ cert_filter[0].pValue = &cert_class;
+
+ if (pkcs11_fetch_keys_filter(p, slotidx, pubkey_filter, pubkey_attribs,
+ keysp, nkeys) < 0 ||
+ pkcs11_fetch_keys_filter(p, slotidx, cert_filter, cert_attribs,
+ keysp, nkeys) < 0)
+ return (-1);
+ return (0);
+}
+
+static int
+pkcs11_key_included(struct sshkey ***keysp, int *nkeys, struct sshkey *key)
+{
+ int i;
+
+ for (i = 0; i < *nkeys; i++)
+ if (sshkey_equal(key, (*keysp)[i]))
+ return (1);
+ return (0);
+}
+
+static int
+have_rsa_key(const RSA *rsa)
+{
+ const BIGNUM *rsa_n, *rsa_e;
+
+ RSA_get0_key(rsa, &rsa_n, &rsa_e, NULL);
+ return rsa_n != NULL && rsa_e != NULL;
+}
+
+static int
+pkcs11_fetch_keys_filter(struct pkcs11_provider *p, CK_ULONG slotidx,
+ CK_ATTRIBUTE filter[], CK_ATTRIBUTE attribs[3],
+ struct sshkey ***keysp, int *nkeys)
+{
+ struct sshkey *key;
+ RSA *rsa;
+ X509 *x509;
+ EVP_PKEY *evp;
+ int i;
+ const u_char *cp;
+ CK_RV rv;
+ CK_OBJECT_HANDLE obj;
+ CK_ULONG nfound;
+ CK_SESSION_HANDLE session;
+ CK_FUNCTION_LIST *f;
+
+ f = p->function_list;
+ session = p->slotinfo[slotidx].session;
+ /* setup a filter the looks for public keys */
+ if ((rv = f->C_FindObjectsInit(session, filter, 1)) != CKR_OK) {
+ error("C_FindObjectsInit failed: %lu", rv);
+ return (-1);
+ }
+ while (1) {
+ /* XXX 3 attributes in attribs[] */
+ for (i = 0; i < 3; i++) {
+ attribs[i].pValue = NULL;
+ attribs[i].ulValueLen = 0;
+ }
+ if ((rv = f->C_FindObjects(session, &obj, 1, &nfound)) != CKR_OK
+ || nfound == 0)
+ break;
+ /* found a key, so figure out size of the attributes */
+ if ((rv = f->C_GetAttributeValue(session, obj, attribs, 3))
+ != CKR_OK) {
+ error("C_GetAttributeValue failed: %lu", rv);
+ continue;
+ }
+ /*
+ * Allow CKA_ID (always first attribute) to be empty, but
+ * ensure that none of the others are zero length.
+ * XXX assumes CKA_ID is always first.
+ */
+ if (attribs[1].ulValueLen == 0 ||
+ attribs[2].ulValueLen == 0) {
+ continue;
+ }
+ /* allocate buffers for attributes */
+ for (i = 0; i < 3; i++) {
+ if (attribs[i].ulValueLen > 0) {
+ attribs[i].pValue = xmalloc(
+ attribs[i].ulValueLen);
+ }
+ }
+
+ /*
+ * retrieve ID, modulus and public exponent of RSA key,
+ * or ID, subject and value for certificates.
+ */
+ rsa = NULL;
+ if ((rv = f->C_GetAttributeValue(session, obj, attribs, 3))
+ != CKR_OK) {
+ error("C_GetAttributeValue failed: %lu", rv);
+ } else if (attribs[1].type == CKA_MODULUS ) {
+ if ((rsa = RSA_new()) == NULL) {
+ error("RSA_new failed");
+ } else {
+ BIGNUM *rsa_n, *rsa_e;
+
+ rsa_n = BN_bin2bn(attribs[1].pValue,
+ attribs[1].ulValueLen, NULL);
+ rsa_e = BN_bin2bn(attribs[2].pValue,
+ attribs[2].ulValueLen, NULL);
+ if (rsa_n != NULL && rsa_e != NULL) {
+ if (!RSA_set0_key(rsa,
+ rsa_n, rsa_e, NULL))
+ fatal("%s: set key", __func__);
+ rsa_n = rsa_e = NULL; /* transferred */
+ }
+ BN_free(rsa_n);
+ BN_free(rsa_e);
+ }
+ } else {
+ cp = attribs[2].pValue;
+ if ((x509 = X509_new()) == NULL) {
+ error("X509_new failed");
+ } else if (d2i_X509(&x509, &cp, attribs[2].ulValueLen)
+ == NULL) {
+ error("d2i_X509 failed");
+ } else if ((evp = X509_get_pubkey(x509)) == NULL ||
+ EVP_PKEY_base_id(evp) != EVP_PKEY_RSA ||
+ EVP_PKEY_get0_RSA(evp) == NULL) {
+ debug("X509_get_pubkey failed or no rsa");
+ } else if ((rsa = RSAPublicKey_dup(
+ EVP_PKEY_get0_RSA(evp))) == NULL) {
+ error("RSAPublicKey_dup");
+ }
+ X509_free(x509);
+ }
+ if (rsa && have_rsa_key(rsa) &&
+ pkcs11_rsa_wrap(p, slotidx, &attribs[0], rsa) == 0) {
+ if ((key = sshkey_new(KEY_UNSPEC)) == NULL)
+ fatal("sshkey_new failed");
+ key->rsa = rsa;
+ key->type = KEY_RSA;
+ key->flags |= SSHKEY_FLAG_EXT;
+ if (pkcs11_key_included(keysp, nkeys, key)) {
+ sshkey_free(key);
+ } else {
+ /* expand key array and add key */
+ *keysp = xrecallocarray(*keysp, *nkeys,
+ *nkeys + 1, sizeof(struct sshkey *));
+ (*keysp)[*nkeys] = key;
+ *nkeys = *nkeys + 1;
+ debug("have %d keys", *nkeys);
+ }
+ } else if (rsa) {
+ RSA_free(rsa);
+ }
+ for (i = 0; i < 3; i++)
+ free(attribs[i].pValue);
+ }
+ if ((rv = f->C_FindObjectsFinal(session)) != CKR_OK)
+ error("C_FindObjectsFinal failed: %lu", rv);
+ return (0);
+}
+
+/* register a new provider, fails if provider already exists */
+int
+pkcs11_add_provider(char *provider_id, char *pin, struct sshkey ***keyp)
+{
+ int nkeys, need_finalize = 0;
+ struct pkcs11_provider *p = NULL;
+ void *handle = NULL;
+ CK_RV (*getfunctionlist)(CK_FUNCTION_LIST **);
+ CK_RV rv;
+ CK_FUNCTION_LIST *f = NULL;
+ CK_TOKEN_INFO *token;
+ CK_ULONG i;
+
+ *keyp = NULL;
+ if (pkcs11_provider_lookup(provider_id) != NULL) {
+ debug("%s: provider already registered: %s",
+ __func__, provider_id);
+ goto fail;
+ }
+ /* open shared pkcs11-libarary */
+ if ((handle = dlopen(provider_id, RTLD_NOW)) == NULL) {
+ error("dlopen %s failed: %s", provider_id, dlerror());
+ goto fail;
+ }
+ if ((getfunctionlist = dlsym(handle, "C_GetFunctionList")) == NULL) {
+ error("dlsym(C_GetFunctionList) failed: %s", dlerror());
+ goto fail;
+ }
+ p = xcalloc(1, sizeof(*p));
+ p->name = xstrdup(provider_id);
+ p->handle = handle;
+ /* setup the pkcs11 callbacks */
+ if ((rv = (*getfunctionlist)(&f)) != CKR_OK) {
+ error("C_GetFunctionList for provider %s failed: %lu",
+ provider_id, rv);
+ goto fail;
+ }
+ p->function_list = f;
+ if ((rv = f->C_Initialize(NULL)) != CKR_OK) {
+ error("C_Initialize for provider %s failed: %lu",
+ provider_id, rv);
+ goto fail;
+ }
+ need_finalize = 1;
+ if ((rv = f->C_GetInfo(&p->info)) != CKR_OK) {
+ error("C_GetInfo for provider %s failed: %lu",
+ provider_id, rv);
+ goto fail;
+ }
+ rmspace(p->info.manufacturerID, sizeof(p->info.manufacturerID));
+ rmspace(p->info.libraryDescription, sizeof(p->info.libraryDescription));
+ debug("provider %s: manufacturerID <%s> cryptokiVersion %d.%d"
+ " libraryDescription <%s> libraryVersion %d.%d",
+ provider_id,
+ p->info.manufacturerID,
+ p->info.cryptokiVersion.major,
+ p->info.cryptokiVersion.minor,
+ p->info.libraryDescription,
+ p->info.libraryVersion.major,
+ p->info.libraryVersion.minor);
+ if ((rv = f->C_GetSlotList(CK_TRUE, NULL, &p->nslots)) != CKR_OK) {
+ error("C_GetSlotList failed: %lu", rv);
+ goto fail;
+ }
+ if (p->nslots == 0) {
+ debug("%s: provider %s returned no slots", __func__,
+ provider_id);
+ goto fail;
+ }
+ p->slotlist = xcalloc(p->nslots, sizeof(CK_SLOT_ID));
+ if ((rv = f->C_GetSlotList(CK_TRUE, p->slotlist, &p->nslots))
+ != CKR_OK) {
+ error("C_GetSlotList for provider %s failed: %lu",
+ provider_id, rv);
+ goto fail;
+ }
+ p->slotinfo = xcalloc(p->nslots, sizeof(struct pkcs11_slotinfo));
+ p->valid = 1;
+ nkeys = 0;
+ for (i = 0; i < p->nslots; i++) {
+ token = &p->slotinfo[i].token;
+ if ((rv = f->C_GetTokenInfo(p->slotlist[i], token))
+ != CKR_OK) {
+ error("C_GetTokenInfo for provider %s slot %lu "
+ "failed: %lu", provider_id, (unsigned long)i, rv);
+ continue;
+ }
+ if ((token->flags & CKF_TOKEN_INITIALIZED) == 0) {
+ debug2("%s: ignoring uninitialised token in "
+ "provider %s slot %lu", __func__,
+ provider_id, (unsigned long)i);
+ continue;
+ }
+ rmspace(token->label, sizeof(token->label));
+ rmspace(token->manufacturerID, sizeof(token->manufacturerID));
+ rmspace(token->model, sizeof(token->model));
+ rmspace(token->serialNumber, sizeof(token->serialNumber));
+ debug("provider %s slot %lu: label <%s> manufacturerID <%s> "
+ "model <%s> serial <%s> flags 0x%lx",
+ provider_id, (unsigned long)i,
+ token->label, token->manufacturerID, token->model,
+ token->serialNumber, token->flags);
+ /* open session, login with pin and retrieve public keys */
+ if (pkcs11_open_session(p, i, pin) == 0)
+ pkcs11_fetch_keys(p, i, keyp, &nkeys);
+ }
+ if (nkeys > 0) {
+ TAILQ_INSERT_TAIL(&pkcs11_providers, p, next);
+ p->refcount++; /* add to provider list */
+ return (nkeys);
+ }
+ debug("%s: provider %s returned no keys", __func__, provider_id);
+ /* don't add the provider, since it does not have any keys */
+fail:
+ if (need_finalize && (rv = f->C_Finalize(NULL)) != CKR_OK)
+ error("C_Finalize for provider %s failed: %lu",
+ provider_id, rv);
+ if (p) {
+ free(p->slotlist);
+ free(p->slotinfo);
+ free(p);
+ }
+ if (handle)
+ dlclose(handle);
+ return (-1);
+}
+
+#else
+
+int
+pkcs11_init(int interactive)
+{
+ return (0);
+}
+
+void
+pkcs11_terminate(void)
+{
+ return;
+}
+
+#endif /* ENABLE_PKCS11 */