2 * ustream-ssl - library for SSL over ustream
4 * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
6 * Permission to use, copy, modify, and/or distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
21 #include <openssl/x509v3.h>
22 #include "ustream-ssl.h"
23 #include "ustream-internal.h"
25 __hidden struct ustream_ssl_ctx *
26 __ustream_ssl_context_new(bool server)
28 static bool _init = false;
33 SSL_load_error_strings();
39 #ifdef CYASSL_OPENSSL_H_
40 m = SSLv23_server_method();
42 m = TLSv1_2_server_method();
45 m = SSLv23_client_method();
47 c = SSL_CTX_new((void *) m);
51 SSL_CTX_set_verify(c, SSL_VERIFY_NONE, NULL);
52 #ifndef OPENSSL_NO_ECDH
53 SSL_CTX_set_ecdh_auto(c, 1);
56 SSL_CTX_set_cipher_list(c, "DEFAULT:!RC4:@STRENGTH");
57 SSL_CTX_set_quiet_shutdown(c, 1);
62 __hidden int __ustream_ssl_add_ca_crt_file(struct ustream_ssl_ctx *ctx, const char *file)
66 ret = SSL_CTX_load_verify_locations((void *) ctx, file, NULL);
73 __hidden int __ustream_ssl_set_crt_file(struct ustream_ssl_ctx *ctx, const char *file)
77 ret = SSL_CTX_use_certificate_chain_file((void *) ctx, file);
79 ret = SSL_CTX_use_certificate_file((void *) ctx, file, SSL_FILETYPE_ASN1);
87 __hidden int __ustream_ssl_set_key_file(struct ustream_ssl_ctx *ctx, const char *file)
91 ret = SSL_CTX_use_PrivateKey_file((void *) ctx, file, SSL_FILETYPE_PEM);
93 ret = SSL_CTX_use_PrivateKey_file((void *) ctx, file, SSL_FILETYPE_ASN1);
101 __hidden void __ustream_ssl_context_free(struct ustream_ssl_ctx *ctx)
103 SSL_CTX_free((void *) ctx);
106 void __ustream_ssl_session_free(void *ssl)
112 static void ustream_ssl_error(struct ustream_ssl *us, int ret)
115 uloop_timeout_set(&us->error_timer, 0);
118 #ifndef CYASSL_OPENSSL_H_
120 static bool ustream_ssl_verify_cn(struct ustream_ssl *us, X509 *cert)
127 ret = X509_check_host(cert, us->peer_cn, 0, X509_CHECK_FLAG_NO_PARTIAL_WILDCARDS, NULL);
132 static void ustream_ssl_verify_cert(struct ustream_ssl *us)
138 res = SSL_get_verify_result(ssl);
139 if (res != X509_V_OK) {
140 if (us->notify_verify_error)
141 us->notify_verify_error(us, res, X509_verify_cert_error_string(res));
145 cert = SSL_get_peer_certificate(ssl);
149 us->valid_cert = true;
150 us->valid_cn = ustream_ssl_verify_cn(us, cert);
156 __hidden enum ssl_conn_status __ustream_ssl_connect(struct ustream_ssl *us)
164 r = SSL_connect(ssl);
167 #ifndef CYASSL_OPENSSL_H_
168 ustream_ssl_verify_cert(us);
173 r = SSL_get_error(ssl, r);
174 if (r == SSL_ERROR_WANT_READ || r == SSL_ERROR_WANT_WRITE)
175 return U_SSL_PENDING;
177 ustream_ssl_error(us, r);
181 __hidden int __ustream_ssl_write(struct ustream_ssl *us, const char *buf, int len)
184 int ret = SSL_write(ssl, buf, len);
187 int err = SSL_get_error(ssl, ret);
188 if (err == SSL_ERROR_WANT_WRITE)
191 ustream_ssl_error(us, err);
198 __hidden int __ustream_ssl_read(struct ustream_ssl *us, char *buf, int len)
200 int ret = SSL_read(us->ssl, buf, len);
203 ret = SSL_get_error(us->ssl, ret);
204 if (ret == SSL_ERROR_WANT_READ)
205 return U_SSL_PENDING;
207 ustream_ssl_error(us, ret);