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
;
56 ret
= ustream_write(s
, (const char *) buf
, len
, false);
57 if (ret
< 0 || s
->write_error
)
58 return POLARSSL_ERR_NET_SEND_FAILED
;
63 __hidden
void ustream_set_io(struct ustream_ssl_ctx
*ctx
, void *ssl
, struct ustream
*conn
)
65 ssl_set_bio(ssl
, s_ustream_read
, conn
, s_ustream_write
, conn
);
68 static bool urandom_init(void)
73 urandom_fd
= open("/dev/urandom", O_RDONLY
);
80 static int _urandom(void *ctx
, unsigned char *out
, size_t len
)
82 read(urandom_fd
, out
, len
);
86 __hidden
struct ustream_ssl_ctx
*
87 __ustream_ssl_context_new(bool server
)
89 struct ustream_ssl_ctx
*ctx
;
94 ctx
= calloc(1, sizeof(*ctx
));
99 #ifdef USE_VERSION_1_3
102 rsa_init(&ctx
->key
, RSA_PKCS_V15
, 0);
108 __hidden
int __ustream_ssl_set_crt_file(struct ustream_ssl_ctx
*ctx
, const char *file
)
112 #ifdef USE_VERSION_1_3
113 ret
= x509_crt_parse_file(&ctx
->cert
, file
);
115 ret
= x509parse_crtfile(&ctx
->cert
, file
);
123 __hidden
int __ustream_ssl_set_key_file(struct ustream_ssl_ctx
*ctx
, const char *file
)
127 #ifdef USE_VERSION_1_3
128 ret
= pk_parse_keyfile(&ctx
->key
, file
, NULL
);
130 ret
= x509parse_keyfile(&ctx
->key
, file
, NULL
);
138 __hidden
void __ustream_ssl_context_free(struct ustream_ssl_ctx
*ctx
)
140 #ifdef USE_VERSION_1_3
142 x509_crt_free(&ctx
->cert
);
145 x509_free(&ctx
->cert
);
150 static void ustream_ssl_error(struct ustream_ssl
*us
, int ret
)
153 uloop_timeout_set(&us
->error_timer
, 0);
156 static bool ssl_do_wait(int ret
)
159 case POLARSSL_ERR_NET_WANT_READ
:
160 case POLARSSL_ERR_NET_WANT_WRITE
:
167 __hidden
enum ssl_conn_status
__ustream_ssl_connect(struct ustream_ssl
*us
)
172 r
= ssl_handshake(ssl
);
177 return U_SSL_PENDING
;
179 ustream_ssl_error(us
, r
);
183 __hidden
int __ustream_ssl_write(struct ustream_ssl
*us
, const char *buf
, int len
)
186 int ret
= ssl_write(ssl
, (const unsigned char *) buf
, len
);
189 if (ssl_do_wait(ret
))
192 ustream_ssl_error(us
, ret
);
199 __hidden
int __ustream_ssl_read(struct ustream_ssl
*us
, char *buf
, int len
)
201 int ret
= ssl_read(us
->ssl
, (unsigned char *) buf
, len
);
204 if (ssl_do_wait(ret
))
205 return U_SSL_PENDING
;
207 ustream_ssl_error(us
, ret
);
214 static const int default_ciphersuites
[] =
216 #if defined(POLARSSL_AES_C)
217 #if defined(POLARSSL_SHA2_C)
218 TLS_RSA_WITH_AES_256_CBC_SHA256
,
219 #endif /* POLARSSL_SHA2_C */
220 #if defined(POLARSSL_GCM_C) && defined(POLARSSL_SHA4_C)
221 TLS_RSA_WITH_AES_256_GCM_SHA384
,
222 #endif /* POLARSSL_SHA2_C */
223 TLS_RSA_WITH_AES_256_CBC_SHA
,
225 #if defined(POLARSSL_CAMELLIA_C)
226 #if defined(POLARSSL_SHA2_C)
227 TLS_RSA_WITH_CAMELLIA_256_CBC_SHA256
,
228 #endif /* POLARSSL_SHA2_C */
229 TLS_RSA_WITH_CAMELLIA_256_CBC_SHA
,
231 #if defined(POLARSSL_AES_C)
232 #if defined(POLARSSL_SHA2_C)
233 TLS_RSA_WITH_AES_128_CBC_SHA256
,
234 #endif /* POLARSSL_SHA2_C */
235 #if defined(POLARSSL_GCM_C) && defined(POLARSSL_SHA2_C)
236 TLS_RSA_WITH_AES_128_GCM_SHA256
,
237 #endif /* POLARSSL_SHA2_C */
238 TLS_RSA_WITH_AES_128_CBC_SHA
,
240 #if defined(POLARSSL_CAMELLIA_C)
241 #if defined(POLARSSL_SHA2_C)
242 TLS_RSA_WITH_CAMELLIA_128_CBC_SHA256
,
243 #endif /* POLARSSL_SHA2_C */
244 TLS_RSA_WITH_CAMELLIA_128_CBC_SHA
,
246 #if defined(POLARSSL_DES_C)
247 TLS_RSA_WITH_3DES_EDE_CBC_SHA
,
249 #if defined(POLARSSL_ARC4_C)
250 TLS_RSA_WITH_RC4_128_SHA
,
251 TLS_RSA_WITH_RC4_128_MD5
,
256 __hidden
void *__ustream_ssl_session_new(struct ustream_ssl_ctx
*ctx
)
261 ssl
= calloc(1, sizeof(ssl_context
));
272 auth
= SSL_VERIFY_NONE
;
275 auth
= SSL_VERIFY_OPTIONAL
;
278 ssl_set_ciphersuites(ssl
, default_ciphersuites
);
279 ssl_set_endpoint(ssl
, ep
);
280 ssl_set_authmode(ssl
, auth
);
281 ssl_set_rng(ssl
, _urandom
, NULL
);
285 ssl_set_ca_chain(ssl
, ctx
->cert
.next
, NULL
, NULL
);
286 ssl_set_own_cert(ssl
, &ctx
->cert
, &ctx
->key
);
289 ssl_session_reset(ssl
);
294 __hidden
void __ustream_ssl_session_free(void *ssl
)