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- /* ssl_mcnf.c */
- /*
- * Written by Stephen Henson (steve@openssl.org) for the OpenSSL project
- * 2015.
- */
- /* ====================================================================
- * Copyright (c) 2015 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
- * licensing@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).
- *
- */
- #include <stdio.h>
- #include <openssl/conf.h>
- #include <openssl/ssl.h>
- #include "ssl_locl.h"
- /* SSL library configuration module. */
- struct ssl_conf_name {
- /* Name of this set of commands */
- char *name;
- /* List of commands */
- struct ssl_conf_cmd *cmds;
- /* Number of commands */
- size_t cmd_count;
- };
- struct ssl_conf_cmd {
- /* Command */
- char *cmd;
- /* Argument */
- char *arg;
- };
- static struct ssl_conf_name *ssl_names;
- static size_t ssl_names_count;
- static void ssl_module_free(CONF_IMODULE *md)
- {
- size_t i, j;
- if (ssl_names == NULL)
- return;
- for (i = 0; i < ssl_names_count; i++) {
- struct ssl_conf_name *tname = ssl_names + i;
- OPENSSL_free(tname->name);
- for (j = 0; j < tname->cmd_count; j++) {
- OPENSSL_free(tname->cmds[j].cmd);
- OPENSSL_free(tname->cmds[j].arg);
- }
- OPENSSL_free(tname->cmds);
- }
- OPENSSL_free(ssl_names);
- ssl_names = NULL;
- ssl_names_count = 0;
- }
- static int ssl_module_init(CONF_IMODULE *md, const CONF *cnf)
- {
- size_t i, j, cnt;
- int rv = 0;
- const char *ssl_conf_section;
- STACK_OF(CONF_VALUE) *cmd_lists;
- ssl_conf_section = CONF_imodule_get_value(md);
- cmd_lists = NCONF_get_section(cnf, ssl_conf_section);
- if (sk_CONF_VALUE_num(cmd_lists) <= 0){
- if (cmd_lists == NULL)
- SSLerr(SSL_F_SSL_MODULE_INIT, SSL_R_SSL_SECTION_NOT_FOUND);
- else
- SSLerr(SSL_F_SSL_MODULE_INIT, SSL_R_SSL_SECTION_EMPTY);
- ERR_add_error_data(2, "section=", ssl_conf_section);
- goto err;
- }
- cnt = sk_CONF_VALUE_num(cmd_lists);
- ssl_names = OPENSSL_zalloc(sizeof(*ssl_names) * cnt);
- ssl_names_count = cnt;
- for (i = 0; i < ssl_names_count; i++) {
- struct ssl_conf_name *ssl_name = ssl_names + i;
- CONF_VALUE *sect = sk_CONF_VALUE_value(cmd_lists, i);
- STACK_OF(CONF_VALUE) *cmds = NCONF_get_section(cnf, sect->value);
- if (sk_CONF_VALUE_num(cmds) <= 0) {
- if (cmds == NULL)
- SSLerr(SSL_F_SSL_MODULE_INIT, SSL_R_SSL_COMMAND_SECTION_NOT_FOUND);
- else
- SSLerr(SSL_F_SSL_MODULE_INIT, SSL_R_SSL_COMMAND_SECTION_EMPTY);
- ERR_add_error_data(4, "name=", sect->name, ", value=", sect->value);
- goto err;
- }
- ssl_name->name = BUF_strdup(sect->name);
- if (ssl_name->name == NULL)
- goto err;
- cnt = sk_CONF_VALUE_num(cmds);
- ssl_name->cmds = OPENSSL_zalloc(cnt * sizeof(struct ssl_conf_cmd));
- if (ssl_name->cmds == NULL)
- goto err;
- ssl_name->cmd_count = cnt;
- for (j = 0; j < cnt; j++) {
- const char *name;
- CONF_VALUE *cmd_conf = sk_CONF_VALUE_value(cmds, j);
- struct ssl_conf_cmd *cmd = ssl_name->cmds + j;
- /* Skip any initial dot in name */
- name = strchr(cmd_conf->name, '.');
- if (name != NULL)
- name++;
- else
- name = cmd_conf->name;
- cmd->cmd = BUF_strdup(name);
- cmd->arg = BUF_strdup(cmd_conf->value);
- if (cmd->cmd == NULL || cmd->arg == NULL)
- goto err;
- }
- }
- rv = 1;
- err:
- if (rv == 0)
- ssl_module_free(md);
- return rv;
- }
- void SSL_add_ssl_module(void)
- {
- CONF_module_add("ssl_conf", ssl_module_init, ssl_module_free);
- }
- static const struct ssl_conf_name *ssl_name_find(const char *name)
- {
- size_t i;
- const struct ssl_conf_name *nm;
- if (name == NULL)
- return NULL;
- for (i = 0, nm = ssl_names; i < ssl_names_count; i++, nm++) {
- if (strcmp(nm->name, name) == 0)
- return nm;
- }
- return NULL;
- }
- static int ssl_do_config(SSL *s, SSL_CTX *ctx, const char *name)
- {
- SSL_CONF_CTX *cctx = NULL;
- size_t i;
- int rv = 0;
- unsigned int flags;
- const SSL_METHOD *meth;
- const struct ssl_conf_name *nm;
- struct ssl_conf_cmd *cmd;
- if (s == NULL && ctx == NULL) {
- SSLerr(SSL_F_SSL_DO_CONFIG, ERR_R_PASSED_NULL_PARAMETER);
- goto err;
- }
- nm = ssl_name_find(name);
- if (nm == NULL) {
- SSLerr(SSL_F_SSL_DO_CONFIG, SSL_R_INVALID_CONFIGURATION_NAME);
- ERR_add_error_data(2, "name=", name);
- goto err;
- }
- cctx = SSL_CONF_CTX_new();
- if (cctx == NULL)
- goto err;
- flags = SSL_CONF_FLAG_FILE;
- flags |= SSL_CONF_FLAG_CERTIFICATE | SSL_CONF_FLAG_REQUIRE_PRIVATE;
- if (s != NULL) {
- meth = s->method;
- SSL_CONF_CTX_set_ssl(cctx, s);
- } else {
- meth = ctx->method;
- SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
- }
- if (meth->ssl_accept != ssl_undefined_function)
- flags |= SSL_CONF_FLAG_SERVER;
- if (meth->ssl_connect != ssl_undefined_function)
- flags |= SSL_CONF_FLAG_CLIENT;
- SSL_CONF_CTX_set_flags(cctx, flags);
- for (i = 0, cmd = nm->cmds; i < nm->cmd_count; i++, cmd++) {
- rv = SSL_CONF_cmd(cctx, cmd->cmd, cmd->arg);
- if (rv <= 0) {
- if (rv == -2)
- SSLerr(SSL_F_SSL_DO_CONFIG, SSL_R_UNKNOWN_COMMAND);
- else
- SSLerr(SSL_F_SSL_DO_CONFIG, SSL_R_BAD_VALUE);
- ERR_add_error_data(6, "section=", name, ", cmd=", cmd->cmd,
- ", arg=", cmd->arg);
- goto err;
- }
- }
- rv = SSL_CONF_CTX_finish(cctx);
- err:
- SSL_CONF_CTX_free(cctx);
- return rv <= 0 ? 0 : 1;
- }
- int SSL_config(SSL *s, const char *name)
- {
- return ssl_do_config(s, NULL, name);
- }
- int SSL_CTX_config(SSL_CTX *ctx, const char *name)
- {
- return ssl_do_config(NULL, ctx, name);
- }
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