2 * Copyright 2015-2018 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
11 #include <openssl/conf.h>
12 #include <openssl/ssl.h>
15 /* SSL library configuration module. */
17 struct ssl_conf_name {
18 /* Name of this set of commands */
20 /* List of commands */
21 struct ssl_conf_cmd *cmds;
22 /* Number of commands */
33 static struct ssl_conf_name *ssl_names;
34 static size_t ssl_names_count;
36 static void ssl_module_free(CONF_IMODULE *md)
39 if (ssl_names == NULL)
41 for (i = 0; i < ssl_names_count; i++) {
42 struct ssl_conf_name *tname = ssl_names + i;
43 OPENSSL_free(tname->name);
44 for (j = 0; j < tname->cmd_count; j++) {
45 OPENSSL_free(tname->cmds[j].cmd);
46 OPENSSL_free(tname->cmds[j].arg);
48 OPENSSL_free(tname->cmds);
50 OPENSSL_free(ssl_names);
55 static int ssl_module_init(CONF_IMODULE *md, const CONF *cnf)
59 const char *ssl_conf_section;
60 STACK_OF(CONF_VALUE) *cmd_lists;
61 ssl_conf_section = CONF_imodule_get_value(md);
62 cmd_lists = NCONF_get_section(cnf, ssl_conf_section);
63 if (sk_CONF_VALUE_num(cmd_lists) <= 0) {
64 if (cmd_lists == NULL)
65 SSLerr(SSL_F_SSL_MODULE_INIT, SSL_R_SSL_SECTION_NOT_FOUND);
67 SSLerr(SSL_F_SSL_MODULE_INIT, SSL_R_SSL_SECTION_EMPTY);
68 ERR_add_error_data(2, "section=", ssl_conf_section);
71 cnt = sk_CONF_VALUE_num(cmd_lists);
72 ssl_names = OPENSSL_zalloc(sizeof(*ssl_names) * cnt);
73 ssl_names_count = cnt;
74 for (i = 0; i < ssl_names_count; i++) {
75 struct ssl_conf_name *ssl_name = ssl_names + i;
76 CONF_VALUE *sect = sk_CONF_VALUE_value(cmd_lists, (int)i);
77 STACK_OF(CONF_VALUE) *cmds = NCONF_get_section(cnf, sect->value);
78 if (sk_CONF_VALUE_num(cmds) <= 0) {
80 SSLerr(SSL_F_SSL_MODULE_INIT,
81 SSL_R_SSL_COMMAND_SECTION_NOT_FOUND);
83 SSLerr(SSL_F_SSL_MODULE_INIT, SSL_R_SSL_COMMAND_SECTION_EMPTY);
84 ERR_add_error_data(4, "name=", sect->name, ", value=", sect->value);
87 ssl_name->name = BUF_strdup(sect->name);
88 if (ssl_name->name == NULL)
90 cnt = sk_CONF_VALUE_num(cmds);
91 ssl_name->cmds = OPENSSL_zalloc(cnt * sizeof(struct ssl_conf_cmd));
92 if (ssl_name->cmds == NULL)
94 ssl_name->cmd_count = cnt;
95 for (j = 0; j < cnt; j++) {
97 CONF_VALUE *cmd_conf = sk_CONF_VALUE_value(cmds, (int)j);
98 struct ssl_conf_cmd *cmd = ssl_name->cmds + j;
99 /* Skip any initial dot in name */
100 name = strchr(cmd_conf->name, '.');
104 name = cmd_conf->name;
105 cmd->cmd = BUF_strdup(name);
106 cmd->arg = BUF_strdup(cmd_conf->value);
107 if (cmd->cmd == NULL || cmd->arg == NULL)
119 void SSL_add_ssl_module(void)
121 CONF_module_add("ssl_conf", ssl_module_init, ssl_module_free);
124 static const struct ssl_conf_name *ssl_name_find(const char *name)
127 const struct ssl_conf_name *nm;
131 for (i = 0, nm = ssl_names; i < ssl_names_count; i++, nm++) {
132 if (strcmp(nm->name, name) == 0)
138 static int ssl_do_config(SSL *s, SSL_CTX *ctx, const char *name, int system)
140 SSL_CONF_CTX *cctx = NULL;
144 const SSL_METHOD *meth;
145 const struct ssl_conf_name *nm;
146 struct ssl_conf_cmd *cmd;
148 if (s == NULL && ctx == NULL) {
149 SSLerr(SSL_F_SSL_DO_CONFIG, ERR_R_PASSED_NULL_PARAMETER);
153 if (name == NULL && system)
154 name = "system_default";
155 nm = ssl_name_find(name);
158 SSLerr(SSL_F_SSL_DO_CONFIG, SSL_R_INVALID_CONFIGURATION_NAME);
159 ERR_add_error_data(2, "name=", name);
163 cctx = SSL_CONF_CTX_new();
166 flags = SSL_CONF_FLAG_FILE;
168 flags |= SSL_CONF_FLAG_CERTIFICATE | SSL_CONF_FLAG_REQUIRE_PRIVATE;
171 SSL_CONF_CTX_set_ssl(cctx, s);
174 SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
176 if (meth->ssl_accept != ssl_undefined_function)
177 flags |= SSL_CONF_FLAG_SERVER;
178 if (meth->ssl_connect != ssl_undefined_function)
179 flags |= SSL_CONF_FLAG_CLIENT;
180 SSL_CONF_CTX_set_flags(cctx, flags);
181 for (i = 0, cmd = nm->cmds; i < nm->cmd_count; i++, cmd++) {
182 rv = SSL_CONF_cmd(cctx, cmd->cmd, cmd->arg);
185 SSLerr(SSL_F_SSL_DO_CONFIG, SSL_R_UNKNOWN_COMMAND);
187 SSLerr(SSL_F_SSL_DO_CONFIG, SSL_R_BAD_VALUE);
188 ERR_add_error_data(6, "section=", name, ", cmd=", cmd->cmd,
193 rv = SSL_CONF_CTX_finish(cctx);
195 SSL_CONF_CTX_free(cctx);
196 return rv <= 0 ? 0 : 1;
199 int SSL_config(SSL *s, const char *name)
201 return ssl_do_config(s, NULL, name, 0);
204 int SSL_CTX_config(SSL_CTX *ctx, const char *name)
206 return ssl_do_config(NULL, ctx, name, 0);
209 void ssl_ctx_system_config(SSL_CTX *ctx)
211 ssl_do_config(NULL, ctx, NULL, 1);