| 1 | /*
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| 2 | * Copyright 2015-2020 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use
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| 5 | * this file except in compliance with the License. You can obtain a copy
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| 6 | * in the file LICENSE in the source distribution or at
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| 7 | * https://www.openssl.org/source/license.html
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| 8 | */
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| 9 |
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| 10 | #include <stdio.h>
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| 11 | #include <openssl/conf.h>
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| 12 | #include <openssl/ssl.h>
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| 13 | #include "ssl_local.h"
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| 14 | #include "internal/sslconf.h"
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| 15 |
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| 16 | /* SSL library configuration module. */
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| 17 |
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| 18 | void SSL_add_ssl_module(void)
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| 19 | {
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| 20 | /* Do nothing. This will be added automatically by libcrypto */
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| 21 | }
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| 22 |
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| 23 | static int ssl_do_config(SSL *s, SSL_CTX *ctx, const char *name, int system)
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| 24 | {
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| 25 | SSL_CONF_CTX *cctx = NULL;
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| 26 | size_t i, idx, cmd_count;
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| 27 | int rv = 0;
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| 28 | unsigned int flags;
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| 29 | const SSL_METHOD *meth;
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| 30 | const SSL_CONF_CMD *cmds;
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| 31 | OSSL_LIB_CTX *prev_libctx = NULL;
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| 32 | OSSL_LIB_CTX *libctx = NULL;
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| 33 |
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| 34 | if (s == NULL && ctx == NULL) {
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| 35 | ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
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| 36 | goto err;
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| 37 | }
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| 38 |
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| 39 | if (name == NULL && system)
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| 40 | name = "system_default";
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| 41 | if (!conf_ssl_name_find(name, &idx)) {
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| 42 | if (!system)
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| 43 | ERR_raise_data(ERR_LIB_SSL, SSL_R_INVALID_CONFIGURATION_NAME,
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| 44 | "name=%s", name);
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| 45 | goto err;
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| 46 | }
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| 47 | cmds = conf_ssl_get(idx, &name, &cmd_count);
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| 48 | cctx = SSL_CONF_CTX_new();
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| 49 | if (cctx == NULL)
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| 50 | goto err;
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| 51 | flags = SSL_CONF_FLAG_FILE;
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| 52 | if (!system)
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| 53 | flags |= SSL_CONF_FLAG_CERTIFICATE | SSL_CONF_FLAG_REQUIRE_PRIVATE;
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| 54 | if (s != NULL) {
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| 55 | meth = s->method;
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| 56 | SSL_CONF_CTX_set_ssl(cctx, s);
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| 57 | libctx = s->ctx->libctx;
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| 58 | } else {
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| 59 | meth = ctx->method;
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| 60 | SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
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| 61 | libctx = ctx->libctx;
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| 62 | }
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| 63 | if (meth->ssl_accept != ssl_undefined_function)
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| 64 | flags |= SSL_CONF_FLAG_SERVER;
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| 65 | if (meth->ssl_connect != ssl_undefined_function)
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| 66 | flags |= SSL_CONF_FLAG_CLIENT;
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| 67 | SSL_CONF_CTX_set_flags(cctx, flags);
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| 68 | prev_libctx = OSSL_LIB_CTX_set0_default(libctx);
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| 69 | for (i = 0; i < cmd_count; i++) {
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| 70 | char *cmdstr, *arg;
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| 71 |
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| 72 | conf_ssl_get_cmd(cmds, i, &cmdstr, &arg);
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| 73 | rv = SSL_CONF_cmd(cctx, cmdstr, arg);
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| 74 | if (rv <= 0) {
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| 75 | int errcode = rv == -2 ? SSL_R_UNKNOWN_COMMAND : SSL_R_BAD_VALUE;
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| 76 |
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| 77 | ERR_raise_data(ERR_LIB_SSL, errcode,
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| 78 | "section=%s, cmd=%s, arg=%s", name, cmdstr, arg);
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| 79 | goto err;
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| 80 | }
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| 81 | }
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| 82 | rv = SSL_CONF_CTX_finish(cctx);
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| 83 | err:
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| 84 | OSSL_LIB_CTX_set0_default(prev_libctx);
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| 85 | SSL_CONF_CTX_free(cctx);
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| 86 | return rv <= 0 ? 0 : 1;
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| 87 | }
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| 88 |
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| 89 | int SSL_config(SSL *s, const char *name)
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| 90 | {
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| 91 | return ssl_do_config(s, NULL, name, 0);
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| 92 | }
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| 93 |
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| 94 | int SSL_CTX_config(SSL_CTX *ctx, const char *name)
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| 95 | {
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| 96 | return ssl_do_config(NULL, ctx, name, 0);
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| 97 | }
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| 98 |
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| 99 | void ssl_ctx_system_config(SSL_CTX *ctx)
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| 100 | {
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| 101 | ssl_do_config(NULL, ctx, NULL, 1);
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| 102 | }
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