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-rw-r--r--lib/util/digest_openssl.c163
1 files changed, 163 insertions, 0 deletions
diff --git a/lib/util/digest_openssl.c b/lib/util/digest_openssl.c
new file mode 100644
index 0000000..af09684
--- /dev/null
+++ b/lib/util/digest_openssl.c
@@ -0,0 +1,163 @@
+/*
+ * Copyright (c) 2013-2018 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * 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.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <sys/types.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#ifdef HAVE_STRING_H
+# include <string.h>
+#endif /* HAVE_STRING_H */
+#ifdef HAVE_STRINGS_H
+# include <strings.h>
+#endif /* HAVE_STRINGS_H */
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+
+#include <openssl/sha.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_digest.h"
+
+union ANY_CTX {
+ SHA256_CTX sha256;
+ SHA512_CTX sha512;
+};
+
+static struct digest_function {
+ const unsigned int digest_len;
+ int (*init)(union ANY_CTX *);
+ int (*update)(union ANY_CTX *, const void *, size_t);
+ int (*final)(unsigned char *, union ANY_CTX *);
+} digest_functions[] = {
+ {
+ SHA224_DIGEST_LENGTH,
+ (int (*)(union ANY_CTX *))SHA224_Init,
+ (int (*)(union ANY_CTX *, const void *, size_t))SHA224_Update,
+ (int (*)(unsigned char *, union ANY_CTX *))SHA224_Final
+ }, {
+ SHA256_DIGEST_LENGTH,
+ (int (*)(union ANY_CTX *))SHA256_Init,
+ (int (*)(union ANY_CTX *, const void *, size_t))SHA256_Update,
+ (int (*)(unsigned char *, union ANY_CTX *))SHA256_Final
+ }, {
+ SHA384_DIGEST_LENGTH,
+ (int (*)(union ANY_CTX *))SHA384_Init,
+ (int (*)(union ANY_CTX *, const void *, size_t))SHA384_Update,
+ (int (*)(unsigned char *, union ANY_CTX *))SHA384_Final
+ }, {
+ SHA512_DIGEST_LENGTH,
+ (int (*)(union ANY_CTX *))SHA512_Init,
+ (int (*)(union ANY_CTX *, const void *, size_t))SHA512_Update,
+ (int (*)(unsigned char *, union ANY_CTX *))SHA512_Final
+ }, {
+ 0
+ }
+};
+
+struct sudo_digest {
+ struct digest_function *func;
+ union ANY_CTX ctx;
+};
+
+struct sudo_digest *
+sudo_digest_alloc_v1(int digest_type)
+{
+ debug_decl(sudo_digest_alloc, SUDO_DEBUG_UTIL)
+ struct digest_function *func = NULL;
+ struct sudo_digest *dig;
+ int i;
+
+ for (i = 0; digest_functions[i].digest_len != 0; i++) {
+ if (digest_type == i) {
+ func = &digest_functions[i];
+ break;
+ }
+ }
+ if (func == NULL) {
+ errno = EINVAL;
+ debug_return_ptr(NULL);
+ }
+
+ if ((dig = malloc(sizeof(*dig))) == NULL)
+ debug_return_ptr(NULL);
+ func->init(&dig->ctx);
+ dig->func = func;
+
+ debug_return_ptr(dig);
+}
+
+void
+sudo_digest_free_v1(struct sudo_digest *dig)
+{
+ debug_decl(sudo_digest_free, SUDO_DEBUG_UTIL)
+
+ free(dig);
+
+ debug_return;
+}
+
+void
+sudo_digest_reset_v1(struct sudo_digest *dig)
+{
+ debug_decl(sudo_digest_reset, SUDO_DEBUG_UTIL)
+
+ dig->func->init(&dig->ctx);
+
+ debug_return;
+}
+int
+sudo_digest_getlen_v1(int digest_type)
+{
+ debug_decl(sudo_digest_getlen, SUDO_DEBUG_UTIL)
+ int i;
+
+ for (i = 0; digest_functions[i].digest_len != 0; i++) {
+ if (digest_type == i)
+ debug_return_int(digest_functions[i].digest_len);
+ }
+
+ debug_return_int(-1);
+}
+
+void
+sudo_digest_update_v1(struct sudo_digest *dig, const void *data, size_t len)
+{
+ debug_decl(sudo_digest_update, SUDO_DEBUG_UTIL)
+
+ dig->func->update(&dig->ctx, data, len);
+
+ debug_return;
+}
+
+void
+sudo_digest_final_v1(struct sudo_digest *dig, unsigned char *md)
+{
+ debug_decl(sudo_digest_final, SUDO_DEBUG_UTIL)
+
+ dig->func->final(md, &dig->ctx);
+
+ debug_return;
+}