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.
19 #include <sys/types.h>
24 #include "ustream-ssl.h"
25 #include "ustream-internal.h"
27 static int urandom_fd = -1;
29 static int s_ustream_read(void *ctx, unsigned char *buf, size_t len)
31 struct ustream *s = ctx;
38 sbuf = ustream_get_read_buf(s, &slen);
43 return POLARSSL_ERR_NET_WANT_READ;
45 memcpy(buf, sbuf, slen);
46 ustream_consume(s, slen);
51 static int s_ustream_write(void *ctx, const unsigned char *buf, size_t len)
53 struct ustream *s = ctx;
55 len = ustream_write(s, (const char *) buf, len, false);
56 if (len < 0 || s->write_error)
57 return POLARSSL_ERR_NET_SEND_FAILED;
62 __hidden void ustream_set_io(void *ctx, void *ssl, struct ustream *conn)
64 ssl_set_bio(ssl, s_ustream_read, conn, s_ustream_write, conn);
67 static bool urandom_init(void)
72 urandom_fd = open("/dev/urandom", O_RDONLY);
79 static int _urandom(void *ctx, unsigned char *out, size_t len)
81 read(urandom_fd, out, len);
85 __hidden void * __ustream_ssl_context_new(bool server)
87 struct ustream_polarssl_ctx *uctx;
92 uctx = calloc(1, sizeof(*uctx));
96 uctx->server = server;
97 #ifdef USE_VERSION_1_3
100 rsa_init(&uctx->key, RSA_PKCS_V15, 0);
106 __hidden int __ustream_ssl_set_crt_file(void *ctx, const char *file)
108 struct ustream_polarssl_ctx *uctx = ctx;
111 #ifdef USE_VERSION_1_3
112 ret = x509_crt_parse_file(&uctx->cert, file);
114 ret = x509parse_crtfile(&uctx->cert, file);
122 __hidden int __ustream_ssl_set_key_file(void *ctx, const char *file)
124 struct ustream_polarssl_ctx *uctx = ctx;
127 #ifdef USE_VERSION_1_3
128 ret = pk_parse_keyfile(&uctx->key, file, NULL);
130 ret = x509parse_keyfile(&uctx->key, file, NULL);
138 __hidden void __ustream_ssl_context_free(void *ctx)
140 struct ustream_polarssl_ctx *uctx = ctx;
142 #ifdef USE_VERSION_1_3
144 x509_crt_free(&uctx->cert);
146 rsa_free(&uctx->key);
147 x509_free(&uctx->cert);
152 static void ustream_ssl_error(struct ustream_ssl *us, int ret)
155 uloop_timeout_set(&us->error_timer, 0);
158 static bool ssl_do_wait(int ret)
161 case POLARSSL_ERR_NET_WANT_READ:
162 case POLARSSL_ERR_NET_WANT_WRITE:
169 __hidden enum ssl_conn_status __ustream_ssl_connect(struct ustream_ssl *us)
174 r = ssl_handshake(ssl);
179 return U_SSL_PENDING;
181 ustream_ssl_error(us, r);
185 __hidden int __ustream_ssl_write(struct ustream_ssl *us, const char *buf, int len)
188 int ret = ssl_write(ssl, (const unsigned char *) buf, len);
191 if (ssl_do_wait(ret))
194 ustream_ssl_error(us, ret);
201 __hidden int __ustream_ssl_read(struct ustream_ssl *us, char *buf, int len)
203 int ret = ssl_read(us->ssl, (unsigned char *) buf, len);
206 if (ssl_do_wait(ret))
207 return U_SSL_PENDING;
209 ustream_ssl_error(us, ret);
216 static const int default_ciphersuites[] =
218 #if defined(POLARSSL_AES_C)
219 #if defined(POLARSSL_SHA2_C)
220 TLS_RSA_WITH_AES_256_CBC_SHA256,
221 #endif /* POLARSSL_SHA2_C */
222 #if defined(POLARSSL_GCM_C) && defined(POLARSSL_SHA4_C)
223 TLS_RSA_WITH_AES_256_GCM_SHA384,
224 #endif /* POLARSSL_SHA2_C */
225 TLS_RSA_WITH_AES_256_CBC_SHA,
227 #if defined(POLARSSL_CAMELLIA_C)
228 #if defined(POLARSSL_SHA2_C)
229 TLS_RSA_WITH_CAMELLIA_256_CBC_SHA256,
230 #endif /* POLARSSL_SHA2_C */
231 TLS_RSA_WITH_CAMELLIA_256_CBC_SHA,
233 #if defined(POLARSSL_AES_C)
234 #if defined(POLARSSL_SHA2_C)
235 TLS_RSA_WITH_AES_128_CBC_SHA256,
236 #endif /* POLARSSL_SHA2_C */
237 #if defined(POLARSSL_GCM_C) && defined(POLARSSL_SHA2_C)
238 TLS_RSA_WITH_AES_128_GCM_SHA256,
239 #endif /* POLARSSL_SHA2_C */
240 TLS_RSA_WITH_AES_128_CBC_SHA,
242 #if defined(POLARSSL_CAMELLIA_C)
243 #if defined(POLARSSL_SHA2_C)
244 TLS_RSA_WITH_CAMELLIA_128_CBC_SHA256,
245 #endif /* POLARSSL_SHA2_C */
246 TLS_RSA_WITH_CAMELLIA_128_CBC_SHA,
248 #if defined(POLARSSL_DES_C)
249 TLS_RSA_WITH_3DES_EDE_CBC_SHA,
251 #if defined(POLARSSL_ARC4_C)
252 TLS_RSA_WITH_RC4_128_SHA,
253 TLS_RSA_WITH_RC4_128_MD5,
258 __hidden void *__ustream_ssl_session_new(void *ctx)
260 struct ustream_polarssl_ctx *uctx = ctx;
264 ssl = calloc(1, sizeof(ssl_context));
275 auth = SSL_VERIFY_NONE;
278 auth = SSL_VERIFY_OPTIONAL;
281 ssl_set_ciphersuites(ssl, default_ciphersuites);
282 ssl_set_endpoint(ssl, ep);
283 ssl_set_authmode(ssl, auth);
284 ssl_set_rng(ssl, _urandom, NULL);
288 ssl_set_ca_chain(ssl, uctx->cert.next, NULL, NULL);
289 ssl_set_own_cert(ssl, &uctx->cert, &uctx->key);
292 ssl_session_reset(ssl);
297 __hidden void __ustream_ssl_session_free(void *ssl)