-/* Author: Adam Eijdenberg <adam.eijdenberg@gmail.com>. */
-/* ====================================================================
- * Copyright (c) 1998-2016 The OpenSSL Project. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. All advertising materials mentioning features or use of this
- * software must display the following acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- * endorse or promote products derived from this software without
- * prior written permission. For written permission, please contact
- * openssl-core@openssl.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- * nor may "OpenSSL" appear in their names without prior written
- * permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- * acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
- * OF THE POSSIBILITY OF SUCH DAMAGE.
- * ====================================================================
- *
- * This product includes cryptographic software written by Eric Young
- * (eay@cryptsoft.com). This product includes software written by Tim
- * Hudson (tjh@cryptsoft.com).
+/*
+ * Copyright 2016-2020 The OpenSSL Project Authors. All Rights Reserved.
*
+ * Licensed under the Apache License 2.0 (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
*/
#include <stdlib.h>
#include "internal/cryptlib.h"
+DEFINE_STACK_OF(CTLOG)
+
/*
* Information about a CT log server.
*/
struct ctlog_st {
+ OPENSSL_CTX *libctx;
+ char *propq;
char *name;
uint8_t log_id[CT_V1_HASHLEN];
EVP_PKEY *public_key;
* It takes ownership of any CTLOG instances added to it.
*/
struct ctlog_store_st {
+ OPENSSL_CTX *libctx;
+ char *propq;
STACK_OF(CTLOG) *logs;
};
typedef struct ctlog_store_load_ctx_st {
CTLOG_STORE *log_store;
CONF *conf;
+ size_t invalid_log_entries;
} CTLOG_STORE_LOAD_CTX;
/*
* Creates an empty context for loading a CT log store.
* It should be populated before use.
*/
-static CTLOG_STORE_LOAD_CTX *ctlog_store_load_ctx_new();
+static CTLOG_STORE_LOAD_CTX *ctlog_store_load_ctx_new(void);
/*
* Deletes a CT log store load context.
*/
static void ctlog_store_load_ctx_free(CTLOG_STORE_LOAD_CTX* ctx);
-static CTLOG_STORE_LOAD_CTX *ctlog_store_load_ctx_new()
+static CTLOG_STORE_LOAD_CTX *ctlog_store_load_ctx_new(void)
{
CTLOG_STORE_LOAD_CTX *ctx = OPENSSL_zalloc(sizeof(*ctx));
- if (ctx == NULL) {
+ if (ctx == NULL)
CTerr(CT_F_CTLOG_STORE_LOAD_CTX_NEW, ERR_R_MALLOC_FAILURE);
- goto err;
- }
return ctx;
-err:
- ctlog_store_load_ctx_free(ctx);
- return NULL;
}
static void ctlog_store_load_ctx_free(CTLOG_STORE_LOAD_CTX* ctx)
}
/* Converts a log's public key into a SHA256 log ID */
-static int ct_v1_log_id_from_pkey(EVP_PKEY *pkey,
- unsigned char log_id[CT_V1_HASHLEN])
+static int ct_v1_log_id_from_pkey(CTLOG *log, EVP_PKEY *pkey)
{
int ret = 0;
unsigned char *pkey_der = NULL;
int pkey_der_len = i2d_PUBKEY(pkey, &pkey_der);
+ unsigned int len;
+ EVP_MD *sha256 = NULL;
if (pkey_der_len <= 0) {
CTerr(CT_F_CT_V1_LOG_ID_FROM_PKEY, CT_R_LOG_KEY_INVALID);
goto err;
}
+ sha256 = EVP_MD_fetch(log->libctx, "SHA2-256", log->propq);
+ if (sha256 == NULL) {
+ CTerr(CT_F_CT_V1_LOG_ID_FROM_PKEY, ERR_LIB_EVP);
+ goto err;
+ }
- SHA256(pkey_der, pkey_der_len, log_id);
- ret = 1;
+ ret = EVP_Digest(pkey_der, pkey_der_len, log->log_id, &len, sha256,
+ NULL);
err:
+ EVP_MD_free(sha256);
OPENSSL_free(pkey_der);
return ret;
}
-CTLOG_STORE *CTLOG_STORE_new(void)
+CTLOG_STORE *CTLOG_STORE_new_with_libctx(OPENSSL_CTX *libctx, const char *propq)
{
CTLOG_STORE *ret = OPENSSL_zalloc(sizeof(*ret));
- if (ret == NULL)
- goto err;
+ if (ret == NULL) {
+ CTerr(0, ERR_R_MALLOC_FAILURE);
+ return NULL;
+ }
+
+ ret->libctx = libctx;
+ if (propq != NULL) {
+ ret->propq = OPENSSL_strdup(propq);
+ if (ret->propq == NULL) {
+ CTerr(0, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ }
ret->logs = sk_CTLOG_new_null();
- if (ret->logs == NULL)
+ if (ret->logs == NULL) {
+ CTerr(0, ERR_R_MALLOC_FAILURE);
goto err;
+ }
return ret;
err:
return NULL;
}
+CTLOG_STORE *CTLOG_STORE_new(void)
+{
+ return CTLOG_STORE_new_with_libctx(NULL, NULL);
+}
+
void CTLOG_STORE_free(CTLOG_STORE *store)
{
if (store != NULL) {
+ OPENSSL_free(store->propq);
sk_CTLOG_pop_free(store->logs, CTLOG_free);
OPENSSL_free(store);
}
}
-static CTLOG *ctlog_new_from_conf(const CONF *conf, const char *section)
+static int ctlog_new_from_conf(CTLOG_STORE *store, CTLOG **ct_log,
+ const CONF *conf, const char *section)
{
- CTLOG *ret = NULL;
- char *description = NCONF_get_string(conf, section, "description");
+ const char *description = NCONF_get_string(conf, section, "description");
char *pkey_base64;
if (description == NULL) {
CTerr(CT_F_CTLOG_NEW_FROM_CONF, CT_R_LOG_CONF_MISSING_DESCRIPTION);
- goto end;
+ return 0;
}
pkey_base64 = NCONF_get_string(conf, section, "key");
if (pkey_base64 == NULL) {
CTerr(CT_F_CTLOG_NEW_FROM_CONF, CT_R_LOG_CONF_MISSING_KEY);
- goto end;
- }
-
- ret = CTLOG_new_from_base64(pkey_base64, description);
- if (ret == NULL) {
- CTerr(CT_F_CTLOG_NEW_FROM_CONF, CT_R_LOG_CONF_INVALID);
- goto end;
+ return 0;
}
-end:
- return ret;
+ return CTLOG_new_from_base64_with_libctx(ct_log, pkey_base64, description,
+ store->libctx, store->propq);
}
int CTLOG_STORE_load_default_file(CTLOG_STORE *store)
{
- const char *fpath = getenv(CTLOG_FILE_EVP);
+ const char *fpath = ossl_safe_getenv(CTLOG_FILE_EVP);
if (fpath == NULL)
fpath = CTLOG_FILE;
return CTLOG_STORE_load_file(store, fpath);
}
-static int ctlog_store_load_log(const char *log_name, int log_name_len, void *arg)
+/*
+ * Called by CONF_parse_list, which stops if this returns <= 0,
+ * Otherwise, one bad log entry would stop loading of any of
+ * the following log entries.
+ * It may stop parsing and returns -1 on any internal (malloc) error.
+ */
+static int ctlog_store_load_log(const char *log_name, int log_name_len,
+ void *arg)
{
CTLOG_STORE_LOAD_CTX *load_ctx = arg;
- CTLOG *ct_log;
+ CTLOG *ct_log = NULL;
/* log_name may not be null-terminated, so fix that before using it */
- char *tmp = OPENSSL_strndup(log_name, log_name_len);
+ char *tmp;
+ int ret = 0;
+
+ /* log_name will be NULL for empty list entries */
+ if (log_name == NULL)
+ return 1;
- ct_log = ctlog_new_from_conf(load_ctx->conf, tmp);
+ tmp = OPENSSL_strndup(log_name, log_name_len);
+ if (tmp == NULL)
+ goto mem_err;
+
+ ret = ctlog_new_from_conf(load_ctx->log_store, &ct_log, load_ctx->conf, tmp);
OPENSSL_free(tmp);
- if (ct_log == NULL)
- return 0;
- sk_CTLOG_push(load_ctx->log_store->logs, ct_log);
+ if (ret < 0) {
+ /* Propagate any internal error */
+ return ret;
+ }
+ if (ret == 0) {
+ /* If we can't load this log, record that fact and skip it */
+ ++load_ctx->invalid_log_entries;
+ return 1;
+ }
+
+ if (!sk_CTLOG_push(load_ctx->log_store->logs, ct_log)) {
+ goto mem_err;
+ }
return 1;
+
+mem_err:
+ CTLOG_free(ct_log);
+ CTerr(CT_F_CTLOG_STORE_LOAD_LOG, ERR_R_MALLOC_FAILURE);
+ return -1;
}
int CTLOG_STORE_load_file(CTLOG_STORE *store, const char *file)
{
- int ret = -1;
+ int ret = 0;
char *enabled_logs;
CTLOG_STORE_LOAD_CTX* load_ctx = ctlog_store_load_ctx_new();
+ if (load_ctx == NULL)
+ return 0;
load_ctx->log_store = store;
load_ctx->conf = NCONF_new(NULL);
if (load_ctx->conf == NULL)
goto end;
- ret = NCONF_load(load_ctx->conf, file, NULL);
- if (ret <= 0) {
+ if (NCONF_load(load_ctx->conf, file, NULL) <= 0) {
CTerr(CT_F_CTLOG_STORE_LOAD_FILE, CT_R_LOG_CONF_INVALID);
goto end;
}
enabled_logs = NCONF_get_string(load_ctx->conf, NULL, "enabled_logs");
- CONF_parse_list(enabled_logs, ',', 1, ctlog_store_load_log, load_ctx);
+ if (enabled_logs == NULL) {
+ CTerr(CT_F_CTLOG_STORE_LOAD_FILE, CT_R_LOG_CONF_INVALID);
+ goto end;
+ }
+ if (!CONF_parse_list(enabled_logs, ',', 1, ctlog_store_load_log, load_ctx) ||
+ load_ctx->invalid_log_entries > 0) {
+ CTerr(CT_F_CTLOG_STORE_LOAD_FILE, CT_R_LOG_CONF_INVALID);
+ goto end;
+ }
+
+ ret = 1;
end:
NCONF_free(load_ctx->conf);
ctlog_store_load_ctx_free(load_ctx);
* Takes ownership of the public key.
* Copies the name.
*/
-CTLOG *CTLOG_new(EVP_PKEY *public_key, const char *name)
+CTLOG *CTLOG_new_with_libctx(EVP_PKEY *public_key, const char *name,
+ OPENSSL_CTX *libctx, const char *propq)
{
- CTLOG *ret = CTLOG_new_null();
+ CTLOG *ret = OPENSSL_zalloc(sizeof(*ret));
- if (ret == NULL)
- goto err;
+ if (ret == NULL) {
+ CTerr(0, ERR_R_MALLOC_FAILURE);
+ return NULL;
+ }
+
+ ret->libctx = libctx;
+ if (propq != NULL) {
+ ret->name = OPENSSL_strdup(propq);
+ if (ret->propq == NULL) {
+ CTerr(0, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ }
ret->name = OPENSSL_strdup(name);
- if (ret->name == NULL)
+ if (ret->name == NULL) {
+ CTerr(0, ERR_R_MALLOC_FAILURE);
goto err;
+ }
- ret->public_key = public_key;
- if (ct_v1_log_id_from_pkey(public_key, ret->log_id) != 1)
+ if (ct_v1_log_id_from_pkey(ret, public_key) != 1)
goto err;
+ ret->public_key = public_key;
return ret;
err:
CTLOG_free(ret);
return NULL;
}
-CTLOG *CTLOG_new_null(void)
+CTLOG *CTLOG_new(EVP_PKEY *public_key, const char *name)
{
- CTLOG *ret = OPENSSL_zalloc(sizeof(*ret));
-
- if (ret == NULL)
- CTerr(CT_F_CTLOG_NEW_NULL, ERR_R_MALLOC_FAILURE);
-
- return ret;
+ return CTLOG_new_with_libctx(public_key, name, NULL, NULL);
}
/* Frees CT log and associated structures */
if (log != NULL) {
OPENSSL_free(log->name);
EVP_PKEY_free(log->public_key);
+ OPENSSL_free(log->propq);
OPENSSL_free(log);
}
}
-const char *CTLOG_get0_name(CTLOG *log)
+const char *CTLOG_get0_name(const CTLOG *log)
{
return log->name;
}
-void CTLOG_get0_log_id(CTLOG *log, uint8_t **log_id, size_t *log_id_len)
+void CTLOG_get0_log_id(const CTLOG *log, const uint8_t **log_id,
+ size_t *log_id_len)
{
*log_id = log->log_id;
*log_id_len = CT_V1_HASHLEN;
}
-EVP_PKEY *CTLOG_get0_public_key(CTLOG *log)
+EVP_PKEY *CTLOG_get0_public_key(const CTLOG *log)
{
return log->public_key;
}
* Given a log ID, finds the matching log.
* Returns NULL if no match found.
*/
-CTLOG *CTLOG_STORE_get0_log_by_id(const CTLOG_STORE *store,
- const uint8_t *log_id,
- size_t log_id_len)
+const CTLOG *CTLOG_STORE_get0_log_by_id(const CTLOG_STORE *store,
+ const uint8_t *log_id,
+ size_t log_id_len)
{
int i;
for (i = 0; i < sk_CTLOG_num(store->logs); ++i) {
- CTLOG *log = sk_CTLOG_value(store->logs, i);
+ const CTLOG *log = sk_CTLOG_value(store->logs, i);
if (memcmp(log->log_id, log_id, log_id_len) == 0)
return log;
}
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