ssl/ssl_mcnf.c

   1 /*
   2  * Copyright 2015-2020 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     OSSL_LIB_CTX *prev_libctx = NULL;
  32     OSSL_LIB_CTX *libctx = NULL;
  33
  34     if (s == NULL && ctx == NULL) {
  35         ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
  36         goto err;
  37     }
  38
  39     if (name == NULL && system)
  40         name = "system_default";
  41     if (!conf_ssl_name_find(name, &idx)) {
  42         if (!system)
  43             ERR_raise_data(ERR_LIB_SSL, SSL_R_INVALID_CONFIGURATION_NAME,
  44                            "name=%s", name);
  45         goto err;
  46     }
  47     cmds = conf_ssl_get(idx, &name, &cmd_count);
  48     cctx = SSL_CONF_CTX_new();
  49     if (cctx == NULL)
  50         goto err;
  51     flags = SSL_CONF_FLAG_FILE;
  52     if (!system)
  53         flags |= SSL_CONF_FLAG_CERTIFICATE | SSL_CONF_FLAG_REQUIRE_PRIVATE;
  54     if (s != NULL) {
  55         meth = s->method;
  56         SSL_CONF_CTX_set_ssl(cctx, s);
  57         libctx = s->ctx->libctx;
  58     } else {
  59         meth = ctx->method;
  60         SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
  61         libctx = ctx->libctx;
  62     }
  63     if (meth->ssl_accept != ssl_undefined_function)
  64         flags |= SSL_CONF_FLAG_SERVER;
  65     if (meth->ssl_connect != ssl_undefined_function)
  66         flags |= SSL_CONF_FLAG_CLIENT;
  67     SSL_CONF_CTX_set_flags(cctx, flags);
  68     prev_libctx = OSSL_LIB_CTX_set0_default(libctx);
  69     for (i = 0; i < cmd_count; i++) {
  70         char *cmdstr, *arg;
  71
  72         conf_ssl_get_cmd(cmds, i, &cmdstr, &arg);
  73         rv = SSL_CONF_cmd(cctx, cmdstr, arg);
  74         if (rv <= 0) {
  75             int errcode = rv == -2 ? SSL_R_UNKNOWN_COMMAND : SSL_R_BAD_VALUE;
  76
  77             ERR_raise_data(ERR_LIB_SSL, errcode,
  78                            "section=%s, cmd=%s, arg=%s", name, cmdstr, arg);
  79             goto err;
  80         }
  81     }
  82     rv = SSL_CONF_CTX_finish(cctx);
  83  err:
  84     OSSL_LIB_CTX_set0_default(prev_libctx);
  85     SSL_CONF_CTX_free(cctx);
  86     return rv <= 0 ? 0 : 1;
  87 }
  88
  89 int SSL_config(SSL *s, const char *name)
  90 {
  91     return ssl_do_config(s, NULL, name, 0);
  92 }
  93
  94 int SSL_CTX_config(SSL_CTX *ctx, const char *name)
  95 {
  96     return ssl_do_config(NULL, ctx, name, 0);
  97 }
  98
  99 void ssl_ctx_system_config(SSL_CTX *ctx)
 100 {
 101     ssl_do_config(NULL, ctx, NULL, 1);
 102 }