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-rw-r--r--lib/verify-tofu.c767
1 files changed, 767 insertions, 0 deletions
diff --git a/lib/verify-tofu.c b/lib/verify-tofu.c
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--- /dev/null
+++ b/lib/verify-tofu.c
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+/*
+ * Copyright (C) 2012 Free Software Foundation, Inc.
+ *
+ * Author: Nikos Mavrogiannopoulos
+ *
+ * This file is part of GnuTLS.
+ *
+ * The GnuTLS is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>
+ *
+ */
+
+#include "gnutls_int.h"
+#include "errors.h"
+#include <libtasn1.h>
+#include <global.h>
+#include <num.h> /* MAX */
+#include <tls-sig.h>
+#include "str.h"
+#include <datum.h>
+#include "x509_int.h"
+#include <nettle/base64.h>
+#include <common.h>
+#include <gnutls/abstract.h>
+#include <system.h>
+#include <locks.h>
+
+GNUTLS_STATIC_MUTEX(file_mutex);
+
+struct gnutls_tdb_int {
+ gnutls_tdb_store_func store;
+ gnutls_tdb_store_commitment_func cstore;
+ gnutls_tdb_verify_func verify;
+};
+
+static int raw_pubkey_to_base64(const gnutls_datum_t * raw,
+ gnutls_datum_t * b64);
+static int verify_pubkey(const char *file, const char *host,
+ const char *service, const gnutls_datum_t * skey);
+
+static
+int store_commitment(const char *db_name, const char *host,
+ const char *service, time_t expiration,
+ gnutls_digest_algorithm_t hash_algo,
+ const gnutls_datum_t * hash);
+static
+int store_pubkey(const char *db_name, const char *host,
+ const char *service, time_t expiration,
+ const gnutls_datum_t * pubkey);
+
+static int find_config_file(char *file, size_t max_size);
+
+struct gnutls_tdb_int default_tdb = {
+ store_pubkey,
+ store_commitment,
+ verify_pubkey
+};
+
+
+/**
+ * gnutls_verify_stored_pubkey:
+ * @db_name: A file specifying the stored keys (use NULL for the default)
+ * @tdb: A storage structure or NULL to use the default
+ * @host: The peer's name
+ * @service: non-NULL if this key is specific to a service (e.g. http)
+ * @cert_type: The type of the certificate
+ * @cert: The raw (der) data of the certificate
+ * @flags: should be 0.
+ *
+ * This function will try to verify a raw public-key or a public-key provided via
+ * a raw (DER-encoded) certificate using a list of stored public keys.
+ * The @service field if non-NULL should be a port number.
+ *
+ * The @db_name variable if non-null specifies a custom backend for
+ * the retrieval of entries. If it is NULL then the
+ * default file backend will be used. In POSIX-like systems the
+ * file backend uses the $HOME/.gnutls/known_hosts file.
+ *
+ * Note that if the custom storage backend is provided the
+ * retrieval function should return %GNUTLS_E_CERTIFICATE_KEY_MISMATCH
+ * if the host/service pair is found but key doesn't match,
+ * %GNUTLS_E_NO_CERTIFICATE_FOUND if no such host/service with
+ * the given key is found, and 0 if it was found. The storage
+ * function should return 0 on success.
+ *
+ * As of GnuTLS 3.6.6 this function also verifies raw public keys.
+ *
+ * Returns: If no associated public key is found
+ * then %GNUTLS_E_NO_CERTIFICATE_FOUND will be returned. If a key
+ * is found but does not match %GNUTLS_E_CERTIFICATE_KEY_MISMATCH
+ * is returned. On success, %GNUTLS_E_SUCCESS (0) is returned,
+ * or a negative error value on other errors.
+ *
+ * Since: 3.0.13
+ **/
+int
+gnutls_verify_stored_pubkey(const char *db_name,
+ gnutls_tdb_t tdb,
+ const char *host,
+ const char *service,
+ gnutls_certificate_type_t cert_type,
+ const gnutls_datum_t * cert,
+ unsigned int flags)
+{
+ gnutls_datum_t pubkey = { NULL, 0 }; // Holds the pubkey in subjectPublicKeyInfo format (DER encoded)
+ int ret;
+ char local_file[MAX_FILENAME];
+ bool need_free;
+
+
+ if (db_name == NULL && tdb == NULL) {
+ ret = find_config_file(local_file, sizeof(local_file));
+ if (ret < 0)
+ return gnutls_assert_val(ret);
+ db_name = local_file;
+ }
+
+ if (tdb == NULL)
+ tdb = &default_tdb;
+
+ /* Import the public key depending on the provided certificate type */
+ switch (cert_type) {
+ case GNUTLS_CRT_X509:
+ /* Extract the pubkey from the cert. This function does a malloc
+ * deep down the call chain. We are responsible for freeing. */
+ ret = _gnutls_x509_raw_crt_to_raw_pubkey(cert, &pubkey);
+
+ if (ret < 0) {
+ _gnutls_free_datum(&pubkey);
+ return gnutls_assert_val(ret);
+ }
+
+ need_free = true;
+ break;
+ case GNUTLS_CRT_RAWPK:
+ pubkey.data = cert->data;
+ pubkey.size = cert->size;
+ need_free = false;
+ break;
+ default:
+ return gnutls_assert_val(GNUTLS_E_UNSUPPORTED_CERTIFICATE_TYPE);
+ }
+
+ // Verify our pubkey against the database
+ ret = tdb->verify(db_name, host, service, &pubkey);
+ if (ret < 0 && ret != GNUTLS_E_CERTIFICATE_KEY_MISMATCH)
+ ret = gnutls_assert_val(GNUTLS_E_NO_CERTIFICATE_FOUND);
+
+ if (need_free) {
+ _gnutls_free_datum(&pubkey);
+ }
+
+ return ret;
+}
+
+static int parse_commitment_line(char *line,
+ const char *host, size_t host_len,
+ const char *service, size_t service_len,
+ time_t now, const gnutls_datum_t * skey)
+{
+ char *p, *kp;
+ char *savep = NULL;
+ size_t kp_len, phash_size;
+ time_t expiration;
+ int ret;
+ const mac_entry_st *hash_algo;
+ uint8_t phash[MAX_HASH_SIZE];
+ uint8_t hphash[MAX_HASH_SIZE * 2 + 1];
+
+ /* read host */
+ p = strtok_r(line, "|", &savep);
+ if (p == NULL)
+ return gnutls_assert_val(GNUTLS_E_PARSING_ERROR);
+
+ if (p[0] != '*' && host != NULL && strcmp(p, host) != 0)
+ return gnutls_assert_val(GNUTLS_E_PARSING_ERROR);
+
+ /* read service */
+ p = strtok_r(NULL, "|", &savep);
+ if (p == NULL)
+ return gnutls_assert_val(GNUTLS_E_PARSING_ERROR);
+
+ if (p[0] != '*' && service != NULL && strcmp(p, service) != 0)
+ return gnutls_assert_val(GNUTLS_E_PARSING_ERROR);
+
+ /* read expiration */
+ p = strtok_r(NULL, "|", &savep);
+ if (p == NULL)
+ return gnutls_assert_val(GNUTLS_E_PARSING_ERROR);
+
+ expiration = (time_t) atol(p);
+ if (expiration > 0 && now > expiration)
+ return gnutls_assert_val(GNUTLS_E_EXPIRED);
+
+ /* read hash algorithm */
+ p = strtok_r(NULL, "|", &savep);
+ if (p == NULL)
+ return gnutls_assert_val(GNUTLS_E_PARSING_ERROR);
+
+ hash_algo = mac_to_entry(atol(p));
+ if (_gnutls_digest_get_name(hash_algo) == NULL)
+ return gnutls_assert_val(GNUTLS_E_PARSING_ERROR);
+
+ /* read hash */
+ kp = strtok_r(NULL, "|", &savep);
+ if (kp == NULL)
+ return gnutls_assert_val(GNUTLS_E_PARSING_ERROR);
+
+ p = strpbrk(kp, "\n \r\t|");
+ if (p != NULL)
+ *p = 0;
+
+ /* hash and hex encode */
+ ret =
+ _gnutls_hash_fast((gnutls_digest_algorithm_t)hash_algo->id,
+ skey->data, skey->size, phash);
+ if (ret < 0)
+ return gnutls_assert_val(ret);
+
+ phash_size = _gnutls_hash_get_algo_len(hash_algo);
+
+ p = _gnutls_bin2hex(phash, phash_size, (void *) hphash,
+ sizeof(hphash), NULL);
+ if (p == NULL)
+ return gnutls_assert_val(GNUTLS_E_INTERNAL_ERROR);
+
+ kp_len = strlen(kp);
+ if (kp_len != phash_size * 2)
+ return
+ gnutls_assert_val(GNUTLS_E_CERTIFICATE_KEY_MISMATCH);
+
+ if (memcmp(kp, hphash, kp_len) != 0)
+ return
+ gnutls_assert_val(GNUTLS_E_CERTIFICATE_KEY_MISMATCH);
+
+ /* key found and matches */
+ return 0;
+}
+
+
+static int parse_line(char *line,
+ const char *host, size_t host_len,
+ const char *service, size_t service_len,
+ time_t now,
+ const gnutls_datum_t * rawkey,
+ const gnutls_datum_t * b64key)
+{
+ char *p, *kp;
+ char *savep = NULL;
+ size_t kp_len;
+ time_t expiration;
+
+ /* read version */
+ p = strtok_r(line, "|", &savep);
+ if (p == NULL)
+ return gnutls_assert_val(GNUTLS_E_PARSING_ERROR);
+
+ if (strncmp(p, "c0", 2) == 0)
+ return parse_commitment_line(p + 3, host, host_len,
+ service, service_len, now,
+ rawkey);
+
+ if (strncmp(p, "g0", 2) != 0)
+ return gnutls_assert_val(GNUTLS_E_PARSING_ERROR);
+
+ /* read host */
+ p = strtok_r(NULL, "|", &savep);
+ if (p == NULL)
+ return gnutls_assert_val(GNUTLS_E_PARSING_ERROR);
+
+ if (p[0] != '*' && host != NULL && strcmp(p, host) != 0)
+ return gnutls_assert_val(GNUTLS_E_PARSING_ERROR);
+
+ /* read service */
+ p = strtok_r(NULL, "|", &savep);
+ if (p == NULL)
+ return gnutls_assert_val(GNUTLS_E_PARSING_ERROR);
+
+ if (p[0] != '*' && service != NULL && strcmp(p, service) != 0)
+ return gnutls_assert_val(GNUTLS_E_PARSING_ERROR);
+
+ /* read expiration */
+ p = strtok_r(NULL, "|", &savep);
+ if (p == NULL)
+ return gnutls_assert_val(GNUTLS_E_PARSING_ERROR);
+
+ expiration = (time_t) atol(p);
+ if (expiration > 0 && now > expiration)
+ return gnutls_assert_val(GNUTLS_E_EXPIRED);
+
+ /* read key */
+ kp = strtok_r(NULL, "|", &savep);
+ if (kp == NULL)
+ return gnutls_assert_val(GNUTLS_E_PARSING_ERROR);
+
+ p = strpbrk(kp, "\n \r\t|");
+ if (p != NULL)
+ *p = 0;
+
+ kp_len = strlen(kp);
+ if (kp_len != b64key->size)
+ return
+ gnutls_assert_val(GNUTLS_E_CERTIFICATE_KEY_MISMATCH);
+
+ if (memcmp(kp, b64key->data, b64key->size) != 0)
+ return
+ gnutls_assert_val(GNUTLS_E_CERTIFICATE_KEY_MISMATCH);
+
+ /* key found and matches */
+ return 0;
+}
+
+/* Returns the base64 key if found
+ */
+static int verify_pubkey(const char *file,
+ const char *host, const char *service,
+ const gnutls_datum_t * pubkey)
+{
+ FILE *fp;
+ char *line = NULL;
+ size_t line_size = 0;
+ int ret, l2, mismatch = 0;
+ size_t host_len = 0, service_len = 0;
+ time_t now = gnutls_time(0);
+ gnutls_datum_t b64key = { NULL, 0 };
+
+ ret = raw_pubkey_to_base64(pubkey, &b64key);
+ if (ret < 0)
+ return gnutls_assert_val(ret);
+
+ if (host != NULL)
+ host_len = strlen(host);
+ if (service != NULL)
+ service_len = strlen(service);
+
+ fp = fopen(file, "rbe");
+ if (fp == NULL) {
+ ret = gnutls_assert_val(GNUTLS_E_FILE_ERROR);
+ goto cleanup;
+ }
+
+ do {
+ l2 = getline(&line, &line_size, fp);
+ if (l2 > 0) {
+ ret =
+ parse_line(line, host, host_len, service,
+ service_len, now, pubkey, &b64key);
+ if (ret == 0) { /* found */
+ goto cleanup;
+ } else if (ret ==
+ GNUTLS_E_CERTIFICATE_KEY_MISMATCH)
+ mismatch = 1;
+ }
+ }
+ while (l2 >= 0);
+
+ if (mismatch)
+ ret = GNUTLS_E_CERTIFICATE_KEY_MISMATCH;
+ else
+ ret = GNUTLS_E_NO_CERTIFICATE_FOUND;
+
+ cleanup:
+ free(line);
+ if (fp != NULL)
+ fclose(fp);
+ gnutls_free(b64key.data);
+
+ return ret;
+}
+
+static int raw_pubkey_to_base64(const gnutls_datum_t * raw,
+ gnutls_datum_t * b64)
+{
+ size_t size;
+
+ size = BASE64_ENCODE_RAW_LENGTH(raw->size);
+
+ b64->data = gnutls_malloc(size);
+ if (b64->data == NULL)
+ return gnutls_assert_val(GNUTLS_E_MEMORY_ERROR);
+
+ base64_encode_raw((void*)b64->data, raw->size, raw->data);
+ b64->size = size;
+
+ return 0;
+}
+
+static
+int store_pubkey(const char *db_name, const char *host,
+ const char *service, time_t expiration,
+ const gnutls_datum_t * pubkey)
+{
+ FILE *fp = NULL;
+ gnutls_datum_t b64key = { NULL, 0 };
+ int ret;
+
+ ret = gnutls_static_mutex_lock(&file_mutex);
+ if (ret != 0)
+ return gnutls_assert_val(GNUTLS_E_LOCKING_ERROR);
+
+ ret = raw_pubkey_to_base64(pubkey, &b64key);
+ if (ret < 0) {
+ gnutls_assert();
+ goto cleanup;
+ }
+
+ fp = fopen(db_name, "abe+");
+ if (fp == NULL) {
+ ret = gnutls_assert_val(GNUTLS_E_FILE_ERROR);
+ goto cleanup;
+ }
+
+ if (service == NULL)
+ service = "*";
+ if (host == NULL)
+ host = "*";
+
+ fprintf(fp, "|g0|%s|%s|%lu|%.*s\n", host, service,
+ (unsigned long) expiration, b64key.size, b64key.data);
+
+ ret = 0;
+
+ cleanup:
+ if (fp != NULL)
+ fclose(fp);
+
+ (void)gnutls_static_mutex_unlock(&file_mutex);
+ gnutls_free(b64key.data);
+
+ return ret;
+}
+
+static
+int store_commitment(const char *db_name, const char *host,
+ const char *service, time_t expiration,
+ gnutls_digest_algorithm_t hash_algo,
+ const gnutls_datum_t * hash)
+{
+ FILE *fp;
+ char buffer[MAX_HASH_SIZE * 2 + 1];
+
+ fp = fopen(db_name, "abe+");
+ if (fp == NULL)
+ return gnutls_assert_val(GNUTLS_E_FILE_ERROR);
+
+ if (service == NULL)
+ service = "*";
+ if (host == NULL)
+ host = "*";
+
+ fprintf(fp, "|c0|%s|%s|%lu|%u|%s\n", host, service,
+ (unsigned long) expiration, (unsigned) hash_algo,
+ _gnutls_bin2hex(hash->data, hash->size, buffer,
+ sizeof(buffer), NULL));
+
+ fclose(fp);
+
+ return 0;
+}
+
+/**
+ * gnutls_store_pubkey:
+ * @db_name: A file specifying the stored keys (use NULL for the default)
+ * @tdb: A storage structure or NULL to use the default
+ * @host: The peer's name
+ * @service: non-NULL if this key is specific to a service (e.g. http)
+ * @cert_type: The type of the certificate
+ * @cert: The data of the certificate
+ * @expiration: The expiration time (use 0 to disable expiration)
+ * @flags: should be 0.
+ *
+ * This function will store a raw public-key or a public-key provided via
+ * a raw (DER-encoded) certificate to the list of stored public keys. The key
+ * will be considered valid until the provided expiration time.
+ *
+ * The @tdb variable if non-null specifies a custom backend for
+ * the storage of entries. If it is NULL then the
+ * default file backend will be used.
+ *
+ * Unless an alternative @tdb is provided, the storage format is a textual format
+ * consisting of a line for each host with fields separated by '|'. The contents of
+ * the fields are a format-identifier which is set to 'g0', the hostname that the
+ * rest of the data applies to, the numeric port or host name, the expiration
+ * time in seconds since the epoch (0 for no expiration), and a base64
+ * encoding of the raw (DER) public key information (SPKI) of the peer.
+ *
+ * As of GnuTLS 3.6.6 this function also accepts raw public keys.
+ *
+ * Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise a
+ * negative error value.
+ *
+ * Since: 3.0.13
+ **/
+int
+gnutls_store_pubkey(const char *db_name,
+ gnutls_tdb_t tdb,
+ const char *host,
+ const char *service,
+ gnutls_certificate_type_t cert_type,
+ const gnutls_datum_t * cert,
+ time_t expiration, unsigned int flags)
+{
+ gnutls_datum_t pubkey = { NULL, 0 }; // Holds the pubkey in subjectPublicKeyInfo format (DER encoded)
+ int ret;
+ char local_file[MAX_FILENAME];
+ bool need_free;
+
+
+ if (db_name == NULL && tdb == NULL) {
+ ret =
+ _gnutls_find_config_path(local_file,
+ sizeof(local_file));
+ if (ret < 0)
+ return gnutls_assert_val(ret);
+
+ _gnutls_debug_log("Configuration path: %s\n", local_file);
+ mkdir(local_file, 0700);
+
+ ret = find_config_file(local_file, sizeof(local_file));
+ if (ret < 0)
+ return gnutls_assert_val(ret);
+ db_name = local_file;
+ }
+
+ if (tdb == NULL)
+ tdb = &default_tdb;
+
+ /* Import the public key depending on the provided certificate type */
+ switch (cert_type) {
+ case GNUTLS_CRT_X509:
+ /* Extract the pubkey from the cert. This function does a malloc
+ * deep down the call chain. We are responsible for freeing. */
+ ret = _gnutls_x509_raw_crt_to_raw_pubkey(cert, &pubkey);
+
+ if (ret < 0) {
+ _gnutls_free_datum(&pubkey);
+ return gnutls_assert_val(ret);
+ }
+
+ need_free = true;
+ break;
+ case GNUTLS_CRT_RAWPK:
+ pubkey.data = cert->data;
+ pubkey.size = cert->size;
+ need_free = false;
+ break;
+ default:
+ return gnutls_assert_val(GNUTLS_E_UNSUPPORTED_CERTIFICATE_TYPE);
+ }
+
+ _gnutls_debug_log("Configuration file: %s\n", db_name);
+
+ ret = tdb->store(db_name, host, service, expiration, &pubkey);
+
+ if (need_free) {
+ _gnutls_free_datum(&pubkey);
+ }
+
+ if (ret < 0) {
+ return gnutls_assert_val(GNUTLS_E_DB_ERROR);
+ }
+
+ return GNUTLS_E_SUCCESS;
+}
+
+/**
+ * gnutls_store_commitment:
+ * @db_name: A file specifying the stored keys (use NULL for the default)
+ * @tdb: A storage structure or NULL to use the default
+ * @host: The peer's name
+ * @service: non-NULL if this key is specific to a service (e.g. http)
+ * @hash_algo: The hash algorithm type
+ * @hash: The raw hash
+ * @expiration: The expiration time (use 0 to disable expiration)
+ * @flags: should be 0 or %GNUTLS_SCOMMIT_FLAG_ALLOW_BROKEN.
+ *
+ * This function will store the provided hash commitment to
+ * the list of stored public keys. The key with the given
+ * hash will be considered valid until the provided expiration time.
+ *
+ * The @tdb variable if non-null specifies a custom backend for
+ * the storage of entries. If it is NULL then the
+ * default file backend will be used.
+ *
+ * Note that this function is not thread safe with the default backend.
+ *
+ * Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise a
+ * negative error value.
+ *
+ * Since: 3.0
+ **/
+int
+gnutls_store_commitment(const char *db_name,
+ gnutls_tdb_t tdb,
+ const char *host,
+ const char *service,
+ gnutls_digest_algorithm_t hash_algo,
+ const gnutls_datum_t * hash,
+ time_t expiration, unsigned int flags)
+{
+ int ret;
+ char local_file[MAX_FILENAME];
+ const mac_entry_st *me = hash_to_entry(hash_algo);
+
+ if (me == NULL)
+ return gnutls_assert_val(GNUTLS_E_ILLEGAL_PARAMETER);
+
+ if (!(flags & GNUTLS_SCOMMIT_FLAG_ALLOW_BROKEN) && _gnutls_digest_is_secure(me) == 0)
+ return gnutls_assert_val(GNUTLS_E_INSUFFICIENT_SECURITY);
+
+ if (_gnutls_hash_get_algo_len(me) != hash->size)
+ return gnutls_assert_val(GNUTLS_E_INVALID_REQUEST);
+
+ if (db_name == NULL && tdb == NULL) {
+ ret =
+ _gnutls_find_config_path(local_file,
+ sizeof(local_file));
+ if (ret < 0)
+ return gnutls_assert_val(ret);
+
+ _gnutls_debug_log("Configuration path: %s\n", local_file);
+ mkdir(local_file, 0700);
+
+ ret = find_config_file(local_file, sizeof(local_file));
+ if (ret < 0)
+ return gnutls_assert_val(ret);
+ db_name = local_file;
+ }
+
+ if (tdb == NULL)
+ tdb = &default_tdb;
+
+ _gnutls_debug_log("Configuration file: %s\n", db_name);
+
+ ret = tdb->cstore(db_name, host, service, expiration,
+ (gnutls_digest_algorithm_t)me->id, hash);
+ if (ret < 0) {
+ return gnutls_assert_val(GNUTLS_E_DB_ERROR);
+ }
+
+ return 0;
+}
+
+#define CONFIG_FILE "known_hosts"
+
+static int find_config_file(char *file, size_t max_size)
+{
+ char path[MAX_FILENAME];
+ int ret;
+
+ ret = _gnutls_find_config_path(path, sizeof(path));
+ if (ret < 0)
+ return gnutls_assert_val(ret);
+
+ if (path[0] == 0)
+ snprintf(file, max_size, "%s", CONFIG_FILE);
+ else
+ snprintf(file, max_size, "%s/%s", path, CONFIG_FILE);
+
+ return 0;
+}
+
+/**
+ * gnutls_tdb_init:
+ * @tdb: A pointer to the type to be initialized
+ *
+ * This function will initialize a public key trust storage structure.
+ *
+ * Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise a
+ * negative error value.
+ **/
+int gnutls_tdb_init(gnutls_tdb_t * tdb)
+{
+ *tdb = gnutls_calloc(1, sizeof(struct gnutls_tdb_int));
+
+ if (!*tdb)
+ return GNUTLS_E_MEMORY_ERROR;
+
+ return 0;
+}
+
+/**
+ * gnutls_set_store_func:
+ * @tdb: The trust storage
+ * @store: The storage function
+ *
+ * This function will associate a storage function with the
+ * trust storage structure. The function is of the following form.
+ *
+ * int gnutls_tdb_store_func(const char* db_name, const char* host,
+ * const char* service, time_t expiration,
+ * const gnutls_datum_t* pubkey);
+ *
+ * The @db_name should be used to pass any private data to this function.
+ *
+ **/
+void gnutls_tdb_set_store_func(gnutls_tdb_t tdb,
+ gnutls_tdb_store_func store)
+{
+ tdb->store = store;
+}
+
+/**
+ * gnutls_set_store_commitment_func:
+ * @tdb: The trust storage
+ * @cstore: The commitment storage function
+ *
+ * This function will associate a commitment (hash) storage function with the
+ * trust storage structure. The function is of the following form.
+ *
+ * int gnutls_tdb_store_commitment_func(const char* db_name, const char* host,
+ * const char* service, time_t expiration,
+ * gnutls_digest_algorithm_t, const gnutls_datum_t* hash);
+ *
+ * The @db_name should be used to pass any private data to this function.
+ *
+ **/
+void gnutls_tdb_set_store_commitment_func(gnutls_tdb_t tdb,
+ gnutls_tdb_store_commitment_func
+ cstore)
+{
+ tdb->cstore = cstore;
+}
+
+/**
+ * gnutls_set_verify_func:
+ * @tdb: The trust storage
+ * @verify: The verification function
+ *
+ * This function will associate a retrieval function with the
+ * trust storage structure. The function is of the following form.
+ *
+ * int gnutls_tdb_verify_func(const char* db_name, const char* host,
+ * const char* service, const gnutls_datum_t* pubkey);
+ *
+ * The verify function should return zero on a match, %GNUTLS_E_CERTIFICATE_KEY_MISMATCH
+ * if there is a mismatch and any other negative error code otherwise.
+ *
+ * The @db_name should be used to pass any private data to this function.
+ *
+ **/
+void gnutls_tdb_set_verify_func(gnutls_tdb_t tdb,
+ gnutls_tdb_verify_func verify)
+{
+ tdb->verify = verify;
+}
+
+/**
+ * gnutls_tdb_deinit:
+ * @tdb: The structure to be deinitialized
+ *
+ * This function will deinitialize a public key trust storage structure.
+ **/
+void gnutls_tdb_deinit(gnutls_tdb_t tdb)
+{
+ gnutls_free(tdb);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-15 08:41:05 +0000