ssl/ssl_mcnf.c

   1 /*
   2  * Copyright 2015-2018 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (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
   8  */
   9
  10 #include <stdio.h>
  11 #include <openssl/conf.h>
  12 #include <openssl/ssl.h>
  13 #include "ssl_local.h"
  14 #include "internal/sslconf.h"
  15
  16 /* SSL library configuration module. */
  17
  18 void SSL_add_ssl_module(void)
  19 {
  20     /* Do nothing. This will be added automatically by libcrypto */
  21 }
  22
  23 static int ssl_do_config(SSL *s, SSL_CTX *ctx, const char *name, int system)
  24 {
  25     SSL_CONF_CTX *cctx = NULL;
  26     size_t i, idx, cmd_count;
  27     int rv = 0;
  28     unsigned int flags;
  29     const SSL_METHOD *meth;
  30     const SSL_CONF_CMD *cmds;
  31
  32     if (s == NULL && ctx == NULL) {
  33         SSLerr(SSL_F_SSL_DO_CONFIG, ERR_R_PASSED_NULL_PARAMETER);
  34         goto err;
  35     }
  36
  37     if (name == NULL && system)
  38         name = "system_default";
  39     if (!conf_ssl_name_find(name, &idx)) {
  40         if (!system) {
  41             SSLerr(SSL_F_SSL_DO_CONFIG, SSL_R_INVALID_CONFIGURATION_NAME);
  42             ERR_add_error_data(2, "name=", name);
  43         }
  44         goto err;
  45     }
  46     cmds = conf_ssl_get(idx, &name, &cmd_count);
  47     cctx = SSL_CONF_CTX_new();
  48     if (cctx == NULL)
  49         goto err;
  50     flags = SSL_CONF_FLAG_FILE;
  51     if (!system)
  52         flags |= SSL_CONF_FLAG_CERTIFICATE | SSL_CONF_FLAG_REQUIRE_PRIVATE;
  53     if (s != NULL) {
  54         meth = s->method;
  55         SSL_CONF_CTX_set_ssl(cctx, s);
  56     } else {
  57         meth = ctx->method;
  58         SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
  59     }
  60     if (meth->ssl_accept != ssl_undefined_function)
  61         flags |= SSL_CONF_FLAG_SERVER;
  62     if (meth->ssl_connect != ssl_undefined_function)
  63         flags |= SSL_CONF_FLAG_CLIENT;
  64     SSL_CONF_CTX_set_flags(cctx, flags);
  65     for (i = 0; i < cmd_count; i++) {
  66         char *cmdstr, *arg;
  67
  68         conf_ssl_get_cmd(cmds, i, &cmdstr, &arg);
  69         rv = SSL_CONF_cmd(cctx, cmdstr, arg);
  70         if (rv <= 0) {
  71             if (rv == -2)
  72                 SSLerr(SSL_F_SSL_DO_CONFIG, SSL_R_UNKNOWN_COMMAND);
  73             else
  74                 SSLerr(SSL_F_SSL_DO_CONFIG, SSL_R_BAD_VALUE);
  75             ERR_add_error_data(6, "section=", name, ", cmd=", cmdstr,
  76                                ", arg=", arg);
  77             goto err;
  78         }
  79     }
  80     rv = SSL_CONF_CTX_finish(cctx);
  81  err:
  82     SSL_CONF_CTX_free(cctx);
  83     return rv <= 0 ? 0 : 1;
  84 }
  85
  86 int SSL_config(SSL *s, const char *name)
  87 {
  88     return ssl_do_config(s, NULL, name, 0);
  89 }
  90
  91 int SSL_CTX_config(SSL_CTX *ctx, const char *name)
  92 {
  93     return ssl_do_config(NULL, ctx, name, 0);
  94 }
  95
  96 void ssl_ctx_system_config(SSL_CTX *ctx)
  97 {
  98     ssl_do_config(NULL, ctx, NULL, 1);
  99 }