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
));
98 ctx
->auth
= SSL_VERIFY_NONE
;
100 #ifdef USE_VERSION_1_3
103 rsa_init(&ctx
->key
, RSA_PKCS_V15
, 0);
109 __hidden
int __ustream_ssl_set_crt_file(struct ustream_ssl_ctx
*ctx
, const char *file
)
113 #ifdef USE_VERSION_1_3
114 ret
= x509_crt_parse_file(&ctx
->cert
, file
);
116 ret
= x509parse_crtfile(&ctx
->cert
, file
);
122 ctx
->auth
= SSL_VERIFY_OPTIONAL
;
127 __hidden
int __ustream_ssl_set_key_file(struct ustream_ssl_ctx
*ctx
, const char *file
)
131 #ifdef USE_VERSION_1_3
132 ret
= pk_parse_keyfile(&ctx
->key
, file
, NULL
);
134 ret
= x509parse_keyfile(&ctx
->key
, file
, NULL
);
142 __hidden
void __ustream_ssl_context_free(struct ustream_ssl_ctx
*ctx
)
144 #ifdef USE_VERSION_1_3
146 x509_crt_free(&ctx
->cert
);
149 x509_free(&ctx
->cert
);
154 static void ustream_ssl_error(struct ustream_ssl
*us
, int ret
)
157 uloop_timeout_set(&us
->error_timer
, 0);
160 static bool ssl_do_wait(int ret
)
163 case POLARSSL_ERR_NET_WANT_READ
:
164 case POLARSSL_ERR_NET_WANT_WRITE
:
171 __hidden
enum ssl_conn_status
__ustream_ssl_connect(struct ustream_ssl
*us
)
176 r
= ssl_handshake(ssl
);
181 return U_SSL_PENDING
;
183 ustream_ssl_error(us
, r
);
187 __hidden
int __ustream_ssl_write(struct ustream_ssl
*us
, const char *buf
, int len
)
190 int ret
= ssl_write(ssl
, (const unsigned char *) buf
, len
);
193 if (ssl_do_wait(ret
))
196 ustream_ssl_error(us
, ret
);
203 __hidden
int __ustream_ssl_read(struct ustream_ssl
*us
, char *buf
, int len
)
205 int ret
= ssl_read(us
->ssl
, (unsigned char *) buf
, len
);
208 if (ssl_do_wait(ret
))
209 return U_SSL_PENDING
;
211 ustream_ssl_error(us
, ret
);
218 static const int default_ciphersuites
[] =
220 #if defined(POLARSSL_AES_C)
221 #if defined(POLARSSL_SHA2_C)
222 TLS_RSA_WITH_AES_256_CBC_SHA256
,
223 #endif /* POLARSSL_SHA2_C */
224 #if defined(POLARSSL_GCM_C) && defined(POLARSSL_SHA4_C)
225 TLS_RSA_WITH_AES_256_GCM_SHA384
,
226 #endif /* POLARSSL_SHA2_C */
227 TLS_RSA_WITH_AES_256_CBC_SHA
,
229 #if defined(POLARSSL_CAMELLIA_C)
230 #if defined(POLARSSL_SHA2_C)
231 TLS_RSA_WITH_CAMELLIA_256_CBC_SHA256
,
232 #endif /* POLARSSL_SHA2_C */
233 TLS_RSA_WITH_CAMELLIA_256_CBC_SHA
,
235 #if defined(POLARSSL_AES_C)
236 #if defined(POLARSSL_SHA2_C)
237 TLS_RSA_WITH_AES_128_CBC_SHA256
,
238 #endif /* POLARSSL_SHA2_C */
239 #if defined(POLARSSL_GCM_C) && defined(POLARSSL_SHA2_C)
240 TLS_RSA_WITH_AES_128_GCM_SHA256
,
241 #endif /* POLARSSL_SHA2_C */
242 TLS_RSA_WITH_AES_128_CBC_SHA
,
244 #if defined(POLARSSL_CAMELLIA_C)
245 #if defined(POLARSSL_SHA2_C)
246 TLS_RSA_WITH_CAMELLIA_128_CBC_SHA256
,
247 #endif /* POLARSSL_SHA2_C */
248 TLS_RSA_WITH_CAMELLIA_128_CBC_SHA
,
250 #if defined(POLARSSL_DES_C)
251 TLS_RSA_WITH_3DES_EDE_CBC_SHA
,
253 #if defined(POLARSSL_ARC4_C)
254 TLS_RSA_WITH_RC4_128_SHA
,
255 TLS_RSA_WITH_RC4_128_MD5
,
260 __hidden
void *__ustream_ssl_session_new(struct ustream_ssl_ctx
*ctx
)
265 ssl
= calloc(1, sizeof(ssl_context
));
279 ssl_set_ciphersuites(ssl
, default_ciphersuites
);
280 ssl_set_endpoint(ssl
, ep
);
281 ssl_set_authmode(ssl
, ctx
->auth
);
282 ssl_set_rng(ssl
, _urandom
, NULL
);
286 ssl_set_ca_chain(ssl
, ctx
->cert
.next
, NULL
, NULL
);
287 ssl_set_own_cert(ssl
, &ctx
->cert
, &ctx
->key
);
290 ssl_session_reset(ssl
);
295 __hidden
void __ustream_ssl_session_free(void *ssl
)