1 /*
2 * Copyright 2015-2024 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
SSL_add_ssl_module(void)18 void SSL_add_ssl_module(void)
19 {
20 /* Do nothing. This will be added automatically by libcrypto */
21 }
22
ssl_do_config(SSL * s,SSL_CTX * ctx,const char * name,int system)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 err = 1;
28 unsigned int flags;
29 unsigned int conf_diagnostics = 0;
30 const SSL_METHOD *meth;
31 const SSL_CONF_CMD *cmds;
32 OSSL_LIB_CTX *prev_libctx = NULL;
33 OSSL_LIB_CTX *libctx = NULL;
34
35 if (s == NULL && ctx == NULL) {
36 ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
37 goto err;
38 }
39
40 if (name == NULL && system)
41 name = "system_default";
42 if (!conf_ssl_name_find(name, &idx)) {
43 if (!system)
44 ERR_raise_data(ERR_LIB_SSL, SSL_R_INVALID_CONFIGURATION_NAME,
45 "name=%s", name);
46 goto err;
47 }
48 cmds = conf_ssl_get(idx, &name, &cmd_count);
49 cctx = SSL_CONF_CTX_new();
50 if (cctx == NULL) {
51 /* this is a fatal error, always report */
52 system = 0;
53 goto err;
54 }
55 flags = SSL_CONF_FLAG_FILE;
56 if (!system)
57 flags |= SSL_CONF_FLAG_CERTIFICATE | SSL_CONF_FLAG_REQUIRE_PRIVATE;
58 if (s != NULL) {
59 meth = s->method;
60 SSL_CONF_CTX_set_ssl(cctx, s);
61 libctx = s->ctx->libctx;
62 } else {
63 meth = ctx->method;
64 SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
65 libctx = ctx->libctx;
66 }
67 conf_diagnostics = OSSL_LIB_CTX_get_conf_diagnostics(libctx);
68 if (conf_diagnostics)
69 flags |= SSL_CONF_FLAG_SHOW_ERRORS;
70 if (meth->ssl_accept != ssl_undefined_function)
71 flags |= SSL_CONF_FLAG_SERVER;
72 if (meth->ssl_connect != ssl_undefined_function)
73 flags |= SSL_CONF_FLAG_CLIENT;
74 SSL_CONF_CTX_set_flags(cctx, flags);
75 prev_libctx = OSSL_LIB_CTX_set0_default(libctx);
76 err = 0;
77 for (i = 0; i < cmd_count; i++) {
78 char *cmdstr, *arg;
79 int rv;
80
81 conf_ssl_get_cmd(cmds, i, &cmdstr, &arg);
82 rv = SSL_CONF_cmd(cctx, cmdstr, arg);
83 if (rv <= 0)
84 ++err;
85 }
86 if (!SSL_CONF_CTX_finish(cctx))
87 ++err;
88 err:
89 OSSL_LIB_CTX_set0_default(prev_libctx);
90 SSL_CONF_CTX_free(cctx);
91 return err == 0 || (system && !conf_diagnostics);
92 }
93
SSL_config(SSL * s,const char * name)94 int SSL_config(SSL *s, const char *name)
95 {
96 return ssl_do_config(s, NULL, name, 0);
97 }
98
SSL_CTX_config(SSL_CTX * ctx,const char * name)99 int SSL_CTX_config(SSL_CTX *ctx, const char *name)
100 {
101 return ssl_do_config(NULL, ctx, name, 0);
102 }
103
ssl_ctx_system_config(SSL_CTX * ctx)104 int ssl_ctx_system_config(SSL_CTX *ctx)
105 {
106 return ssl_do_config(NULL, ctx, NULL, 1);
107 }
108
