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f484cdf5 | 1 | |
2 | /* | |
262a0e14 | 3 | * $Id$ |
f484cdf5 | 4 | * |
5 | * AUTHOR: Benno Rice | |
27d8545c | 6 | * DEBUG: section 83 SSL accelerator support |
f484cdf5 | 7 | * |
8 | * SQUID Internet Object Cache http://squid.nlanr.net/Squid/ | |
9 | * ---------------------------------------------------------- | |
10 | * | |
11 | * Squid is the result of efforts by numerous individuals from the | |
12 | * Internet community. Development is led by Duane Wessels of the | |
13 | * National Laboratory for Applied Network Research and funded by the | |
14 | * National Science Foundation. Squid is Copyrighted (C) 1998 by | |
15 | * Duane Wessels and the University of California San Diego. Please | |
16 | * see the COPYRIGHT file for full details. Squid incorporates | |
17 | * software developed and/or copyrighted by other sources. Please see | |
18 | * the CREDITS file for full details. | |
19 | * | |
20 | * This program is free software; you can redistribute it and/or modify | |
21 | * it under the terms of the GNU General Public License as published by | |
22 | * the Free Software Foundation; either version 2 of the License, or | |
23 | * (at your option) any later version. | |
26ac0430 | 24 | * |
f484cdf5 | 25 | * This program is distributed in the hope that it will be useful, |
26 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
27 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
28 | * GNU General Public License for more details. | |
26ac0430 | 29 | * |
f484cdf5 | 30 | * You should have received a copy of the GNU General Public License |
31 | * along with this program; if not, write to the Free Software | |
32 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. | |
33 | * | |
34 | */ | |
35 | ||
36 | #include "squid.h" | |
454e8283 | 37 | |
38 | /* MS Visual Studio Projects are monolithic, so we need the following | |
39 | * #if to exclude the SSL code from compile process when not needed. | |
40 | */ | |
41 | #if USE_SSL | |
42 | ||
528b2c61 | 43 | #include "fde.h" |
c0941a6a | 44 | #include "acl/FilledChecklist.h" |
4d16918e | 45 | #include "ssl/ErrorDetail.h" |
4db984be | 46 | #include "ssl/support.h" |
95d2589c | 47 | #include "ssl/gadgets.h" |
f484cdf5 | 48 | |
63be0a78 | 49 | /** |
50 | \defgroup ServerProtocolSSLInternal Server-Side SSL Internals | |
51 | \ingroup ServerProtocolSSLAPI | |
52 | */ | |
53 | ||
54 | /// \ingroup ServerProtocolSSLInternal | |
307b83b7 | 55 | static int |
56 | ssl_ask_password_cb(char *buf, int size, int rwflag, void *userdata) | |
57 | { | |
58 | FILE *in; | |
59 | int len = 0; | |
60 | char cmdline[1024]; | |
61 | ||
62 | snprintf(cmdline, sizeof(cmdline), "\"%s\" \"%s\"", Config.Program.ssl_password, (const char *)userdata); | |
63 | in = popen(cmdline, "r"); | |
64 | ||
65 | if (fgets(buf, size, in)) | |
66 | ||
67 | len = strlen(buf); | |
68 | ||
69 | while (len > 0 && (buf[len - 1] == '\n' || buf[len - 1] == '\r')) | |
70 | ||
71 | len--; | |
72 | ||
73 | buf[len] = '\0'; | |
74 | ||
75 | pclose(in); | |
76 | ||
77 | return len; | |
78 | } | |
79 | ||
63be0a78 | 80 | /// \ingroup ServerProtocolSSLInternal |
307b83b7 | 81 | static void |
82 | ssl_ask_password(SSL_CTX * context, const char * prompt) | |
83 | { | |
84 | if (Config.Program.ssl_password) { | |
85 | SSL_CTX_set_default_passwd_cb(context, ssl_ask_password_cb); | |
86 | SSL_CTX_set_default_passwd_cb_userdata(context, (void *)prompt); | |
87 | } | |
88 | } | |
89 | ||
63be0a78 | 90 | /// \ingroup ServerProtocolSSLInternal |
f484cdf5 | 91 | static RSA * |
e6ccf245 | 92 | ssl_temp_rsa_cb(SSL * ssl, int anInt, int keylen) |
f484cdf5 | 93 | { |
e01f02ed | 94 | static RSA *rsa_512 = NULL; |
95 | static RSA *rsa_1024 = NULL; | |
96 | RSA *rsa = NULL; | |
97 | int newkey = 0; | |
f484cdf5 | 98 | |
e01f02ed | 99 | switch (keylen) { |
100 | ||
101 | case 512: | |
102 | ||
103 | if (!rsa_512) { | |
104 | rsa_512 = RSA_generate_key(512, RSA_F4, NULL, NULL); | |
105 | newkey = 1; | |
106 | } | |
107 | ||
108 | rsa = rsa_512; | |
109 | break; | |
110 | ||
111 | case 1024: | |
112 | ||
113 | if (!rsa_1024) { | |
114 | rsa_1024 = RSA_generate_key(1024, RSA_F4, NULL, NULL); | |
115 | newkey = 1; | |
116 | } | |
117 | ||
118 | rsa = rsa_1024; | |
119 | break; | |
120 | ||
121 | default: | |
bf8fe701 | 122 | debugs(83, 1, "ssl_temp_rsa_cb: Unexpected key length " << keylen); |
e01f02ed | 123 | return NULL; |
124 | } | |
125 | ||
126 | if (rsa == NULL) { | |
bf8fe701 | 127 | debugs(83, 1, "ssl_temp_rsa_cb: Failed to generate key " << keylen); |
e01f02ed | 128 | return NULL; |
129 | } | |
130 | ||
131 | if (newkey) { | |
132 | if (do_debug(83, 5)) | |
133 | PEM_write_RSAPrivateKey(debug_log, rsa, NULL, NULL, 0, NULL, NULL); | |
134 | ||
bf8fe701 | 135 | debugs(83, 1, "Generated ephemeral RSA key of length " << keylen); |
e01f02ed | 136 | } |
62e76326 | 137 | |
f484cdf5 | 138 | return rsa; |
139 | } | |
140 | ||
4d16918e CT |
141 | int Ssl::asn1timeToString(ASN1_TIME *tm, char *buf, int len) |
142 | { | |
143 | BIO *bio; | |
144 | int write = 0; | |
145 | bio = BIO_new(BIO_s_mem()); | |
146 | if (bio) { | |
e34763f4 A |
147 | if (ASN1_TIME_print(bio, tm)) |
148 | write = BIO_read(bio, buf, len-1); | |
149 | BIO_free(bio); | |
4d16918e CT |
150 | } |
151 | buf[write]='\0'; | |
152 | return write; | |
153 | } | |
154 | ||
155 | int Ssl::matchX509CommonNames(X509 *peer_cert, void *check_data, int (*check_func)(void *check_data, ASN1_STRING *cn_data)) | |
156 | { | |
157 | assert(peer_cert); | |
158 | ||
159 | X509_NAME *name = X509_get_subject_name(peer_cert); | |
160 | ||
161 | for (int i = X509_NAME_get_index_by_NID(name, NID_commonName, -1); i >= 0; i = X509_NAME_get_index_by_NID(name, NID_commonName, i)) { | |
e34763f4 | 162 | |
4d16918e CT |
163 | ASN1_STRING *cn_data = X509_NAME_ENTRY_get_data(X509_NAME_get_entry(name, i)); |
164 | ||
165 | if ( (*check_func)(check_data, cn_data) == 0) | |
166 | return 1; | |
167 | } | |
168 | ||
169 | STACK_OF(GENERAL_NAME) * altnames; | |
170 | altnames = (STACK_OF(GENERAL_NAME)*)X509_get_ext_d2i(peer_cert, NID_subject_alt_name, NULL, NULL); | |
171 | ||
172 | if (altnames) { | |
173 | int numalts = sk_GENERAL_NAME_num(altnames); | |
174 | for (int i = 0; i < numalts; i++) { | |
175 | const GENERAL_NAME *check = sk_GENERAL_NAME_value(altnames, i); | |
176 | if (check->type != GEN_DNS) { | |
177 | continue; | |
178 | } | |
179 | ASN1_STRING *cn_data = check->d.dNSName; | |
e34763f4 | 180 | |
4d16918e CT |
181 | if ( (*check_func)(check_data, cn_data) == 0) |
182 | return 1; | |
183 | } | |
184 | sk_GENERAL_NAME_pop_free(altnames, GENERAL_NAME_free); | |
185 | } | |
186 | return 0; | |
187 | } | |
188 | ||
189 | static int check_domain( void *check_data, ASN1_STRING *cn_data) | |
190 | { | |
191 | char cn[1024]; | |
192 | const char *server = (const char *)check_data; | |
193 | ||
e34763f4 | 194 | if (cn_data->length > (int)sizeof(cn) - 1) { |
4d16918e CT |
195 | return 1; //if does not fit our buffer just ignore |
196 | } | |
197 | memcpy(cn, cn_data->data, cn_data->length); | |
198 | cn[cn_data->length] = '\0'; | |
199 | debugs(83, 4, "Verifying server domain " << server << " to certificate name/subjectAltName " << cn); | |
200 | return matchDomainName(server, cn[0] == '*' ? cn + 1 : cn); | |
201 | } | |
202 | ||
63be0a78 | 203 | /// \ingroup ServerProtocolSSLInternal |
f484cdf5 | 204 | static int |
205 | ssl_verify_cb(int ok, X509_STORE_CTX * ctx) | |
206 | { | |
207 | char buffer[256]; | |
a7ad6e4e | 208 | SSL *ssl = (SSL *)X509_STORE_CTX_get_ex_data(ctx, SSL_get_ex_data_X509_STORE_CTX_idx()); |
209 | SSL_CTX *sslctx = SSL_get_SSL_CTX(ssl); | |
210 | const char *server = (const char *)SSL_get_ex_data(ssl, ssl_ex_index_server); | |
211 | void *dont_verify_domain = SSL_CTX_get_ex_data(sslctx, ssl_ctx_ex_index_dont_verify_domain); | |
815eaa44 | 212 | ACLChecklist *check = (ACLChecklist*)SSL_get_ex_data(ssl, ssl_ex_index_cert_error_check); |
a7ad6e4e | 213 | X509 *peer_cert = ctx->cert; |
461b9576 | 214 | Ssl::ssl_error_t error_no = SSL_ERROR_NONE; |
f484cdf5 | 215 | |
a7ad6e4e | 216 | X509_NAME_oneline(X509_get_subject_name(peer_cert), buffer, |
62e76326 | 217 | sizeof(buffer)); |
a7ad6e4e | 218 | |
219 | if (ok) { | |
bf8fe701 | 220 | debugs(83, 5, "SSL Certificate signature OK: " << buffer); |
62e76326 | 221 | |
e34763f4 | 222 | if (server) { |
4d16918e | 223 | int found = Ssl::matchX509CommonNames(peer_cert, (void *)server, check_domain); |
62e76326 | 224 | |
225 | if (!found) { | |
815eaa44 | 226 | debugs(83, 2, "SQUID_X509_V_ERR_DOMAIN_MISMATCH: Certificate " << buffer << " does not match domainname " << server); |
62e76326 | 227 | ok = 0; |
4d16918e CT |
228 | error_no = SQUID_X509_V_ERR_DOMAIN_MISMATCH; |
229 | ||
815eaa44 | 230 | if (check) |
c0941a6a | 231 | Filled(check)->ssl_error = SQUID_X509_V_ERR_DOMAIN_MISMATCH; |
62e76326 | 232 | } |
233 | } | |
a7ad6e4e | 234 | } else { |
4d16918e | 235 | error_no = ctx->error; |
cf09bec7 CT |
236 | if (const char *err_descr = Ssl::GetErrorDescr(ctx->error)) |
237 | debugs(83, 5, err_descr << ": " << buffer); | |
238 | else | |
bf8fe701 | 239 | debugs(83, 1, "SSL unknown certificate error " << ctx->error << " in " << buffer); |
815eaa44 | 240 | |
241 | if (check) | |
c0941a6a | 242 | Filled(check)->ssl_error = ctx->error; |
815eaa44 | 243 | } |
244 | ||
245 | if (!ok && check) { | |
246 | if (check->fastCheck()) { | |
247 | debugs(83, 3, "bypassing SSL error " << ctx->error << " in " << buffer); | |
248 | ok = 1; | |
249 | } else { | |
250 | debugs(83, 5, "confirming SSL error " << ctx->error); | |
251 | } | |
a7ad6e4e | 252 | } |
62e76326 | 253 | |
26ac0430 | 254 | if (!dont_verify_domain && server) {} |
62e76326 | 255 | |
4d16918e CT |
256 | if (error_no != SSL_ERROR_NONE && !SSL_get_ex_data(ssl, ssl_ex_index_ssl_error_detail) ) { |
257 | Ssl::ErrorDetail *errDetail = new Ssl::ErrorDetail(error_no, peer_cert); | |
e34763f4 | 258 | if (!SSL_set_ex_data(ssl, ssl_ex_index_ssl_error_detail, errDetail)) { |
4d16918e CT |
259 | debugs(83, 2, "Failed to set Ssl::ErrorDetail in ssl_verify_cb: Certificate " << buffer); |
260 | delete errDetail; | |
261 | } | |
262 | } | |
263 | ||
f484cdf5 | 264 | return ok; |
265 | } | |
266 | ||
63be0a78 | 267 | /// \ingroup ServerProtocolSSLInternal |
26ac0430 | 268 | static struct ssl_option { |
79d4ccdf | 269 | const char *name; |
270 | long value; | |
62e76326 | 271 | } |
272 | ||
273 | ssl_options[] = { | |
79d4ccdf | 274 | |
32d002cb | 275 | #if SSL_OP_MICROSOFT_SESS_ID_BUG |
26ac0430 AJ |
276 | { |
277 | "MICROSOFT_SESS_ID_BUG", SSL_OP_MICROSOFT_SESS_ID_BUG | |
278 | }, | |
673cd7db | 279 | #endif |
32d002cb | 280 | #if SSL_OP_NETSCAPE_CHALLENGE_BUG |
26ac0430 AJ |
281 | { |
282 | "NETSCAPE_CHALLENGE_BUG", SSL_OP_NETSCAPE_CHALLENGE_BUG | |
283 | }, | |
673cd7db | 284 | #endif |
32d002cb | 285 | #if SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG |
26ac0430 AJ |
286 | { |
287 | "NETSCAPE_REUSE_CIPHER_CHANGE_BUG", SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG | |
288 | }, | |
673cd7db | 289 | #endif |
32d002cb | 290 | #if SSL_OP_SSLREF2_REUSE_CERT_TYPE_BUG |
26ac0430 AJ |
291 | { |
292 | "SSLREF2_REUSE_CERT_TYPE_BUG", SSL_OP_SSLREF2_REUSE_CERT_TYPE_BUG | |
293 | }, | |
673cd7db | 294 | #endif |
32d002cb | 295 | #if SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER |
26ac0430 AJ |
296 | { |
297 | "MICROSOFT_BIG_SSLV3_BUFFER", SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER | |
298 | }, | |
673cd7db | 299 | #endif |
32d002cb | 300 | #if SSL_OP_MSIE_SSLV2_RSA_PADDING |
26ac0430 AJ |
301 | { |
302 | "MSIE_SSLV2_RSA_PADDING", SSL_OP_MSIE_SSLV2_RSA_PADDING | |
303 | }, | |
673cd7db | 304 | #endif |
32d002cb | 305 | #if SSL_OP_SSLEAY_080_CLIENT_DH_BUG |
26ac0430 AJ |
306 | { |
307 | "SSLEAY_080_CLIENT_DH_BUG", SSL_OP_SSLEAY_080_CLIENT_DH_BUG | |
308 | }, | |
673cd7db | 309 | #endif |
32d002cb | 310 | #if SSL_OP_TLS_D5_BUG |
26ac0430 AJ |
311 | { |
312 | "TLS_D5_BUG", SSL_OP_TLS_D5_BUG | |
313 | }, | |
673cd7db | 314 | #endif |
32d002cb | 315 | #if SSL_OP_TLS_BLOCK_PADDING_BUG |
26ac0430 AJ |
316 | { |
317 | "TLS_BLOCK_PADDING_BUG", SSL_OP_TLS_BLOCK_PADDING_BUG | |
318 | }, | |
673cd7db | 319 | #endif |
32d002cb | 320 | #if SSL_OP_TLS_ROLLBACK_BUG |
26ac0430 AJ |
321 | { |
322 | "TLS_ROLLBACK_BUG", SSL_OP_TLS_ROLLBACK_BUG | |
323 | }, | |
673cd7db | 324 | #endif |
32d002cb | 325 | #if SSL_OP_ALL |
26ac0430 AJ |
326 | { |
327 | "ALL", SSL_OP_ALL | |
328 | }, | |
673cd7db | 329 | #endif |
32d002cb | 330 | #if SSL_OP_SINGLE_DH_USE |
26ac0430 AJ |
331 | { |
332 | "SINGLE_DH_USE", SSL_OP_SINGLE_DH_USE | |
333 | }, | |
673cd7db | 334 | #endif |
32d002cb | 335 | #if SSL_OP_EPHEMERAL_RSA |
26ac0430 AJ |
336 | { |
337 | "EPHEMERAL_RSA", SSL_OP_EPHEMERAL_RSA | |
338 | }, | |
673cd7db | 339 | #endif |
32d002cb | 340 | #if SSL_OP_PKCS1_CHECK_1 |
26ac0430 AJ |
341 | { |
342 | "PKCS1_CHECK_1", SSL_OP_PKCS1_CHECK_1 | |
343 | }, | |
673cd7db | 344 | #endif |
32d002cb | 345 | #if SSL_OP_PKCS1_CHECK_2 |
26ac0430 AJ |
346 | { |
347 | "PKCS1_CHECK_2", SSL_OP_PKCS1_CHECK_2 | |
348 | }, | |
673cd7db | 349 | #endif |
32d002cb | 350 | #if SSL_OP_NETSCAPE_CA_DN_BUG |
26ac0430 AJ |
351 | { |
352 | "NETSCAPE_CA_DN_BUG", SSL_OP_NETSCAPE_CA_DN_BUG | |
353 | }, | |
673cd7db | 354 | #endif |
32d002cb | 355 | #if SSL_OP_NON_EXPORT_FIRST |
26ac0430 AJ |
356 | { |
357 | "NON_EXPORT_FIRST", SSL_OP_NON_EXPORT_FIRST | |
358 | }, | |
673cd7db | 359 | #endif |
32d002cb | 360 | #if SSL_OP_CIPHER_SERVER_PREFERENCE |
26ac0430 AJ |
361 | { |
362 | "CIPHER_SERVER_PREFERENCE", SSL_OP_CIPHER_SERVER_PREFERENCE | |
363 | }, | |
673cd7db | 364 | #endif |
32d002cb | 365 | #if SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG |
26ac0430 AJ |
366 | { |
367 | "NETSCAPE_DEMO_CIPHER_CHANGE_BUG", SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG | |
368 | }, | |
673cd7db | 369 | #endif |
32d002cb | 370 | #if SSL_OP_NO_SSLv2 |
26ac0430 AJ |
371 | { |
372 | "NO_SSLv2", SSL_OP_NO_SSLv2 | |
373 | }, | |
673cd7db | 374 | #endif |
32d002cb | 375 | #if SSL_OP_NO_SSLv3 |
26ac0430 AJ |
376 | { |
377 | "NO_SSLv3", SSL_OP_NO_SSLv3 | |
378 | }, | |
673cd7db | 379 | #endif |
32d002cb | 380 | #if SSL_OP_NO_TLSv1 |
26ac0430 AJ |
381 | { |
382 | "NO_TLSv1", SSL_OP_NO_TLSv1 | |
383 | }, | |
673cd7db | 384 | #endif |
26ac0430 AJ |
385 | { |
386 | "", 0 | |
387 | }, | |
388 | { | |
389 | NULL, 0 | |
390 | } | |
391 | }; | |
79d4ccdf | 392 | |
63be0a78 | 393 | /// \ingroup ServerProtocolSSLInternal |
84f2d773 | 394 | static long |
79d4ccdf | 395 | ssl_parse_options(const char *options) |
396 | { | |
397 | long op = SSL_OP_ALL; | |
398 | char *tmp; | |
399 | char *option; | |
400 | ||
401 | if (!options) | |
62e76326 | 402 | goto no_options; |
79d4ccdf | 403 | |
404 | tmp = xstrdup(options); | |
62e76326 | 405 | |
79d4ccdf | 406 | option = strtok(tmp, ":,"); |
62e76326 | 407 | |
79d4ccdf | 408 | while (option) { |
62e76326 | 409 | |
410 | struct ssl_option *opt = NULL, *opttmp; | |
411 | long value = 0; | |
412 | enum { | |
413 | MODE_ADD, MODE_REMOVE | |
414 | } mode; | |
415 | ||
416 | switch (*option) { | |
417 | ||
418 | case '!': | |
419 | ||
420 | case '-': | |
421 | mode = MODE_REMOVE; | |
422 | option++; | |
423 | break; | |
424 | ||
425 | case '+': | |
426 | mode = MODE_ADD; | |
427 | option++; | |
428 | break; | |
429 | ||
430 | default: | |
431 | mode = MODE_ADD; | |
432 | break; | |
433 | } | |
434 | ||
435 | for (opttmp = ssl_options; opttmp->name; opttmp++) { | |
436 | if (strcmp(opttmp->name, option) == 0) { | |
437 | opt = opttmp; | |
438 | break; | |
439 | } | |
440 | } | |
441 | ||
442 | if (opt) | |
443 | value = opt->value; | |
444 | else if (strncmp(option, "0x", 2) == 0) { | |
445 | /* Special case.. hex specification */ | |
446 | value = strtol(option + 2, NULL, 16); | |
447 | } else { | |
448 | fatalf("Unknown SSL option '%s'", option); | |
449 | value = 0; /* Keep GCC happy */ | |
450 | } | |
451 | ||
452 | switch (mode) { | |
453 | ||
454 | case MODE_ADD: | |
455 | op |= value; | |
456 | break; | |
457 | ||
458 | case MODE_REMOVE: | |
459 | op &= ~value; | |
460 | break; | |
461 | } | |
462 | ||
463 | option = strtok(NULL, ":,"); | |
79d4ccdf | 464 | } |
465 | ||
466 | safe_free(tmp); | |
62e76326 | 467 | |
468 | no_options: | |
79d4ccdf | 469 | return op; |
470 | } | |
471 | ||
63be0a78 | 472 | /// \ingroup ServerProtocolSSLInternal |
a7ad6e4e | 473 | #define SSL_FLAG_NO_DEFAULT_CA (1<<0) |
63be0a78 | 474 | /// \ingroup ServerProtocolSSLInternal |
a7ad6e4e | 475 | #define SSL_FLAG_DELAYED_AUTH (1<<1) |
63be0a78 | 476 | /// \ingroup ServerProtocolSSLInternal |
a7ad6e4e | 477 | #define SSL_FLAG_DONT_VERIFY_PEER (1<<2) |
63be0a78 | 478 | /// \ingroup ServerProtocolSSLInternal |
a7ad6e4e | 479 | #define SSL_FLAG_DONT_VERIFY_DOMAIN (1<<3) |
63be0a78 | 480 | /// \ingroup ServerProtocolSSLInternal |
b13877cc | 481 | #define SSL_FLAG_NO_SESSION_REUSE (1<<4) |
63be0a78 | 482 | /// \ingroup ServerProtocolSSLInternal |
a82a4fe4 | 483 | #define SSL_FLAG_VERIFY_CRL (1<<5) |
63be0a78 | 484 | /// \ingroup ServerProtocolSSLInternal |
a82a4fe4 | 485 | #define SSL_FLAG_VERIFY_CRL_ALL (1<<6) |
a7ad6e4e | 486 | |
63be0a78 | 487 | /// \ingroup ServerProtocolSSLInternal |
a7ad6e4e | 488 | static long |
489 | ssl_parse_flags(const char *flags) | |
490 | { | |
491 | long fl = 0; | |
492 | char *tmp; | |
493 | char *flag; | |
494 | ||
495 | if (!flags) | |
62e76326 | 496 | return 0; |
a7ad6e4e | 497 | |
498 | tmp = xstrdup(flags); | |
62e76326 | 499 | |
a7ad6e4e | 500 | flag = strtok(tmp, ":,"); |
62e76326 | 501 | |
a7ad6e4e | 502 | while (flag) { |
62e76326 | 503 | if (strcmp(flag, "NO_DEFAULT_CA") == 0) |
504 | fl |= SSL_FLAG_NO_DEFAULT_CA; | |
505 | else if (strcmp(flag, "DELAYED_AUTH") == 0) | |
506 | fl |= SSL_FLAG_DELAYED_AUTH; | |
507 | else if (strcmp(flag, "DONT_VERIFY_PEER") == 0) | |
508 | fl |= SSL_FLAG_DONT_VERIFY_PEER; | |
509 | else if (strcmp(flag, "DONT_VERIFY_DOMAIN") == 0) | |
510 | fl |= SSL_FLAG_DONT_VERIFY_DOMAIN; | |
b13877cc | 511 | else if (strcmp(flag, "NO_SESSION_REUSE") == 0) |
512 | fl |= SSL_FLAG_NO_SESSION_REUSE; | |
a82a4fe4 | 513 | |
32d002cb | 514 | #if X509_V_FLAG_CRL_CHECK |
a82a4fe4 | 515 | |
516 | else if (strcmp(flag, "VERIFY_CRL") == 0) | |
517 | fl |= SSL_FLAG_VERIFY_CRL; | |
518 | else if (strcmp(flag, "VERIFY_CRL_ALL") == 0) | |
519 | fl |= SSL_FLAG_VERIFY_CRL_ALL; | |
520 | ||
521 | #endif | |
522 | ||
62e76326 | 523 | else |
524 | fatalf("Unknown ssl flag '%s'", flag); | |
525 | ||
526 | flag = strtok(NULL, ":,"); | |
a7ad6e4e | 527 | } |
62e76326 | 528 | |
a7ad6e4e | 529 | safe_free(tmp); |
530 | return fl; | |
531 | } | |
532 | ||
815eaa44 | 533 | // "dup" function for SSL_get_ex_new_index("cert_err_check") |
534 | static int | |
535 | ssl_dupAclChecklist(CRYPTO_EX_DATA *, CRYPTO_EX_DATA *, void *, | |
26ac0430 AJ |
536 | int, long, void *) |
537 | { | |
815eaa44 | 538 | // We do not support duplication of ACLCheckLists. |
539 | // If duplication is needed, we can count copies with cbdata. | |
540 | assert(false); | |
541 | return 0; | |
542 | } | |
543 | ||
544 | // "free" function for SSL_get_ex_new_index("cert_err_check") | |
545 | static void | |
546 | ssl_freeAclChecklist(void *, void *ptr, CRYPTO_EX_DATA *, | |
26ac0430 AJ |
547 | int, long, void *) |
548 | { | |
815eaa44 | 549 | delete static_cast<ACLChecklist *>(ptr); // may be NULL |
550 | } | |
a7ad6e4e | 551 | |
4d16918e CT |
552 | // "free" function for SSL_get_ex_new_index("ssl_error_detail") |
553 | static void | |
554 | ssl_free_ErrorDetail(void *, void *ptr, CRYPTO_EX_DATA *, | |
555 | int, long, void *) | |
556 | { | |
557 | Ssl::ErrorDetail *errDetail = static_cast <Ssl::ErrorDetail *>(ptr); | |
558 | delete errDetail; | |
559 | } | |
560 | ||
63be0a78 | 561 | /// \ingroup ServerProtocolSSLInternal |
a7ad6e4e | 562 | static void |
563 | ssl_initialize(void) | |
f484cdf5 | 564 | { |
d193a436 | 565 | static int ssl_initialized = 0; |
62e76326 | 566 | |
d193a436 | 567 | if (!ssl_initialized) { |
62e76326 | 568 | ssl_initialized = 1; |
569 | SSL_load_error_strings(); | |
570 | SSLeay_add_ssl_algorithms(); | |
32d002cb | 571 | #if HAVE_OPENSSL_ENGINE_H |
62e76326 | 572 | |
573 | if (Config.SSL.ssl_engine) { | |
574 | ENGINE *e; | |
575 | ||
576 | if (!(e = ENGINE_by_id(Config.SSL.ssl_engine))) { | |
577 | fatalf("Unable to find SSL engine '%s'\n", Config.SSL.ssl_engine); | |
578 | } | |
579 | ||
580 | if (!ENGINE_set_default(e, ENGINE_METHOD_ALL)) { | |
581 | int ssl_error = ERR_get_error(); | |
582 | fatalf("Failed to initialise SSL engine: %s\n", | |
583 | ERR_error_string(ssl_error, NULL)); | |
584 | } | |
585 | } | |
586 | ||
a7ad6e4e | 587 | #else |
62e76326 | 588 | if (Config.SSL.ssl_engine) { |
589 | fatalf("Your OpenSSL has no SSL engine support\n"); | |
590 | } | |
591 | ||
a7ad6e4e | 592 | #endif |
62e76326 | 593 | |
d193a436 | 594 | } |
62e76326 | 595 | |
a7ad6e4e | 596 | ssl_ex_index_server = SSL_get_ex_new_index(0, (void *) "server", NULL, NULL, NULL); |
597 | ssl_ctx_ex_index_dont_verify_domain = SSL_CTX_get_ex_new_index(0, (void *) "dont_verify_domain", NULL, NULL, NULL); | |
815eaa44 | 598 | ssl_ex_index_cert_error_check = SSL_get_ex_new_index(0, (void *) "cert_error_check", NULL, &ssl_dupAclChecklist, &ssl_freeAclChecklist); |
4d16918e | 599 | ssl_ex_index_ssl_error_detail = SSL_get_ex_new_index(0, (void *) "ssl_error_detail", NULL, NULL, &ssl_free_ErrorDetail); |
a7ad6e4e | 600 | } |
601 | ||
63be0a78 | 602 | /// \ingroup ServerProtocolSSLInternal |
a82a4fe4 | 603 | static int |
604 | ssl_load_crl(SSL_CTX *sslContext, const char *CRLfile) | |
605 | { | |
606 | X509_STORE *st = SSL_CTX_get_cert_store(sslContext); | |
607 | X509_CRL *crl; | |
608 | BIO *in = BIO_new_file(CRLfile, "r"); | |
609 | int count = 0; | |
610 | ||
611 | if (!in) { | |
bf8fe701 | 612 | debugs(83, 2, "WARNING: Failed to open CRL file '" << CRLfile << "'"); |
a82a4fe4 | 613 | return 0; |
614 | } | |
615 | ||
616 | while ((crl = PEM_read_bio_X509_CRL(in,NULL,NULL,NULL))) { | |
617 | if (!X509_STORE_add_crl(st, crl)) | |
bf8fe701 | 618 | debugs(83, 2, "WARNING: Failed to add CRL from file '" << CRLfile << "'"); |
a82a4fe4 | 619 | else |
620 | count++; | |
621 | ||
622 | X509_CRL_free(crl); | |
623 | } | |
624 | ||
625 | BIO_free(in); | |
626 | return count; | |
627 | } | |
628 | ||
a7ad6e4e | 629 | SSL_CTX * |
a82a4fe4 | 630 | sslCreateServerContext(const char *certfile, const char *keyfile, int version, const char *cipher, const char *options, const char *flags, const char *clientCA, const char *CAfile, const char *CApath, const char *CRLfile, const char *dhfile, const char *context) |
a7ad6e4e | 631 | { |
632 | int ssl_error; | |
f1c9c850 | 633 | #if OPENSSL_VERSION_NUMBER < 0x00909000L |
a7ad6e4e | 634 | SSL_METHOD *method; |
f1c9c850 AJ |
635 | #else |
636 | const SSL_METHOD *method; | |
637 | #endif | |
a7ad6e4e | 638 | SSL_CTX *sslContext; |
639 | long fl = ssl_parse_flags(flags); | |
640 | ||
641 | ssl_initialize(); | |
642 | ||
f484cdf5 | 643 | if (!keyfile) |
62e76326 | 644 | keyfile = certfile; |
645 | ||
f484cdf5 | 646 | if (!certfile) |
62e76326 | 647 | certfile = keyfile; |
648 | ||
a7ad6e4e | 649 | if (!CAfile) |
62e76326 | 650 | CAfile = clientCA; |
f484cdf5 | 651 | |
79d4ccdf | 652 | switch (version) { |
62e76326 | 653 | |
f484cdf5 | 654 | case 2: |
50b4c080 | 655 | #ifndef OPENSSL_NO_SSL2 |
bf8fe701 | 656 | debugs(83, 5, "Using SSLv2."); |
62e76326 | 657 | method = SSLv2_server_method(); |
50b4c080 AJ |
658 | #else |
659 | debugs(83, 1, "SSLv2 is not available in this Proxy."); | |
660 | return NULL; | |
661 | #endif | |
62e76326 | 662 | break; |
663 | ||
f484cdf5 | 664 | case 3: |
bf8fe701 | 665 | debugs(83, 5, "Using SSLv3."); |
62e76326 | 666 | method = SSLv3_server_method(); |
667 | break; | |
668 | ||
f484cdf5 | 669 | case 4: |
bf8fe701 | 670 | debugs(83, 5, "Using TLSv1."); |
62e76326 | 671 | method = TLSv1_server_method(); |
672 | break; | |
673 | ||
f484cdf5 | 674 | case 1: |
62e76326 | 675 | |
f484cdf5 | 676 | default: |
bf8fe701 | 677 | debugs(83, 5, "Using SSLv2/SSLv3."); |
62e76326 | 678 | method = SSLv23_server_method(); |
679 | break; | |
f484cdf5 | 680 | } |
681 | ||
682 | sslContext = SSL_CTX_new(method); | |
62e76326 | 683 | |
f484cdf5 | 684 | if (sslContext == NULL) { |
62e76326 | 685 | ssl_error = ERR_get_error(); |
686 | fatalf("Failed to allocate SSL context: %s\n", | |
687 | ERR_error_string(ssl_error, NULL)); | |
f484cdf5 | 688 | } |
62e76326 | 689 | |
79d4ccdf | 690 | SSL_CTX_set_options(sslContext, ssl_parse_options(options)); |
f484cdf5 | 691 | |
6b2936d5 | 692 | if (context && *context) { |
3de409f0 | 693 | SSL_CTX_set_session_id_context(sslContext, (const unsigned char *)context, strlen(context)); |
6b2936d5 | 694 | } |
695 | ||
b13877cc | 696 | if (fl & SSL_FLAG_NO_SESSION_REUSE) { |
697 | SSL_CTX_set_session_cache_mode(sslContext, SSL_SESS_CACHE_OFF); | |
698 | } | |
699 | ||
a9d79803 | 700 | if (Config.SSL.unclean_shutdown) { |
bf8fe701 | 701 | debugs(83, 5, "Enabling quiet SSL shutdowns (RFC violation)."); |
a9d79803 | 702 | |
703 | SSL_CTX_set_quiet_shutdown(sslContext, 1); | |
704 | } | |
705 | ||
79d4ccdf | 706 | if (cipher) { |
bf8fe701 | 707 | debugs(83, 5, "Using chiper suite " << cipher << "."); |
62e76326 | 708 | |
709 | if (!SSL_CTX_set_cipher_list(sslContext, cipher)) { | |
710 | ssl_error = ERR_get_error(); | |
711 | fatalf("Failed to set SSL cipher suite '%s': %s\n", | |
712 | cipher, ERR_error_string(ssl_error, NULL)); | |
713 | } | |
79d4ccdf | 714 | } |
62e76326 | 715 | |
bf8fe701 | 716 | debugs(83, 1, "Using certificate in " << certfile); |
62e76326 | 717 | |
a7ad6e4e | 718 | if (!SSL_CTX_use_certificate_chain_file(sslContext, certfile)) { |
62e76326 | 719 | ssl_error = ERR_get_error(); |
bf8fe701 | 720 | debugs(83, 0, "Failed to acquire SSL certificate '" << certfile << "': " << ERR_error_string(ssl_error, NULL) ); |
62e76326 | 721 | goto error; |
f484cdf5 | 722 | } |
62e76326 | 723 | |
bf8fe701 | 724 | debugs(83, 1, "Using private key in " << keyfile); |
307b83b7 | 725 | ssl_ask_password(sslContext, keyfile); |
62e76326 | 726 | |
f484cdf5 | 727 | if (!SSL_CTX_use_PrivateKey_file(sslContext, keyfile, SSL_FILETYPE_PEM)) { |
62e76326 | 728 | ssl_error = ERR_get_error(); |
bf8fe701 | 729 | debugs(83, 0, "Failed to acquire SSL private key '" << keyfile << "': " << ERR_error_string(ssl_error, NULL) ); |
62e76326 | 730 | goto error; |
f484cdf5 | 731 | } |
62e76326 | 732 | |
bf8fe701 | 733 | debugs(83, 5, "Comparing private and public SSL keys."); |
62e76326 | 734 | |
a7ad6e4e | 735 | if (!SSL_CTX_check_private_key(sslContext)) { |
62e76326 | 736 | ssl_error = ERR_get_error(); |
26ac0430 | 737 | debugs(83, 0, "SSL private key '" << |
bf8fe701 | 738 | certfile << "' does not match public key '" << |
739 | keyfile << "': " << ERR_error_string(ssl_error, NULL) ); | |
62e76326 | 740 | goto error; |
a7ad6e4e | 741 | } |
62e76326 | 742 | |
bf8fe701 | 743 | debugs(83, 9, "Setting RSA key generation callback."); |
a7ad6e4e | 744 | SSL_CTX_set_tmp_rsa_callback(sslContext, ssl_temp_rsa_cb); |
745 | ||
bf8fe701 | 746 | debugs(83, 9, "Setting CA certificate locations."); |
62e76326 | 747 | |
a82a4fe4 | 748 | if ((CAfile || CApath) && !SSL_CTX_load_verify_locations(sslContext, CAfile, CApath)) { |
62e76326 | 749 | ssl_error = ERR_get_error(); |
bf8fe701 | 750 | debugs(83, 1, "Error setting CA certificate locations: " << ERR_error_string(ssl_error, NULL) ); |
751 | debugs(83, 1, "continuing anyway..." ); | |
a7ad6e4e | 752 | } |
62e76326 | 753 | |
a7ad6e4e | 754 | if (!(fl & SSL_FLAG_NO_DEFAULT_CA) && |
62e76326 | 755 | !SSL_CTX_set_default_verify_paths(sslContext)) { |
756 | ssl_error = ERR_get_error(); | |
bf8fe701 | 757 | debugs(83, 1, "Error setting default CA certificate location: " << ERR_error_string(ssl_error, NULL) ); |
758 | debugs(83, 1, "continuing anyway..." ); | |
a7ad6e4e | 759 | } |
62e76326 | 760 | |
a7ad6e4e | 761 | if (clientCA) { |
8c1ff4ef | 762 | STACK_OF(X509_NAME) *cert_names; |
bf8fe701 | 763 | debugs(83, 9, "Set client certifying authority list."); |
8c1ff4ef | 764 | cert_names = SSL_load_client_CA_file(clientCA); |
765 | ||
766 | if (cert_names == NULL) { | |
26ac0430 | 767 | debugs(83, 1, "Error loading the client CA certificates from '" << clientCA << "\': " << ERR_error_string(ERR_get_error(),NULL) ); |
8c1ff4ef | 768 | goto error; |
769 | } | |
770 | ||
771 | ERR_clear_error(); | |
772 | SSL_CTX_set_client_CA_list(sslContext, cert_names); | |
62e76326 | 773 | |
774 | if (fl & SSL_FLAG_DELAYED_AUTH) { | |
bf8fe701 | 775 | debugs(83, 9, "Not requesting client certificates until acl processing requires one"); |
62e76326 | 776 | SSL_CTX_set_verify(sslContext, SSL_VERIFY_NONE, NULL); |
777 | } else { | |
bf8fe701 | 778 | debugs(83, 9, "Requiring client certificates."); |
62e76326 | 779 | SSL_CTX_set_verify(sslContext, SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT, ssl_verify_cb); |
780 | } | |
a82a4fe4 | 781 | |
782 | if (CRLfile) { | |
783 | ssl_load_crl(sslContext, CRLfile); | |
784 | fl |= SSL_FLAG_VERIFY_CRL; | |
785 | } | |
786 | ||
32d002cb | 787 | #if X509_V_FLAG_CRL_CHECK |
a82a4fe4 | 788 | if (fl & SSL_FLAG_VERIFY_CRL_ALL) |
789 | X509_STORE_set_flags(SSL_CTX_get_cert_store(sslContext), X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL); | |
790 | else if (fl & SSL_FLAG_VERIFY_CRL) | |
791 | X509_STORE_set_flags(SSL_CTX_get_cert_store(sslContext), X509_V_FLAG_CRL_CHECK); | |
792 | ||
793 | #endif | |
794 | ||
a7ad6e4e | 795 | } else { |
bf8fe701 | 796 | debugs(83, 9, "Not requiring any client certificates"); |
62e76326 | 797 | SSL_CTX_set_verify(sslContext, SSL_VERIFY_NONE, NULL); |
a7ad6e4e | 798 | } |
f484cdf5 | 799 | |
35105e4b | 800 | if (dhfile) { |
801 | FILE *in = fopen(dhfile, "r"); | |
802 | DH *dh = NULL; | |
803 | int codes; | |
804 | ||
805 | if (in) { | |
806 | dh = PEM_read_DHparams(in, NULL, NULL, NULL); | |
807 | fclose(in); | |
808 | } | |
809 | ||
810 | if (!dh) | |
bf8fe701 | 811 | debugs(83, 1, "WARNING: Failed to read DH parameters '" << dhfile << "'"); |
35105e4b | 812 | else if (dh && DH_check(dh, &codes) == 0) { |
813 | if (codes) { | |
bf8fe701 | 814 | debugs(83, 1, "WARNING: Failed to verify DH parameters '" << dhfile << "' (" << std::hex << codes << ")"); |
35105e4b | 815 | DH_free(dh); |
816 | dh = NULL; | |
817 | } | |
818 | } | |
819 | ||
820 | if (dh) | |
821 | SSL_CTX_set_tmp_dh(sslContext, dh); | |
822 | } | |
823 | ||
a7ad6e4e | 824 | if (fl & SSL_FLAG_DONT_VERIFY_DOMAIN) |
62e76326 | 825 | SSL_CTX_set_ex_data(sslContext, ssl_ctx_ex_index_dont_verify_domain, (void *) -1); |
826 | ||
a7ad6e4e | 827 | return sslContext; |
62e76326 | 828 | |
829 | error: | |
a7ad6e4e | 830 | SSL_CTX_free(sslContext); |
62e76326 | 831 | |
a7ad6e4e | 832 | return NULL; |
833 | } | |
834 | ||
835 | SSL_CTX * | |
a82a4fe4 | 836 | sslCreateClientContext(const char *certfile, const char *keyfile, int version, const char *cipher, const char *options, const char *flags, const char *CAfile, const char *CApath, const char *CRLfile) |
a7ad6e4e | 837 | { |
838 | int ssl_error; | |
f1c9c850 | 839 | #if OPENSSL_VERSION_NUMBER < 0x00909000L |
a7ad6e4e | 840 | SSL_METHOD *method; |
f1c9c850 AJ |
841 | #else |
842 | const SSL_METHOD *method; | |
843 | #endif | |
a7ad6e4e | 844 | SSL_CTX *sslContext; |
845 | long fl = ssl_parse_flags(flags); | |
846 | ||
847 | ssl_initialize(); | |
848 | ||
849 | if (!keyfile) | |
62e76326 | 850 | keyfile = certfile; |
851 | ||
a7ad6e4e | 852 | if (!certfile) |
62e76326 | 853 | certfile = keyfile; |
a7ad6e4e | 854 | |
a7ad6e4e | 855 | switch (version) { |
62e76326 | 856 | |
a7ad6e4e | 857 | case 2: |
50b4c080 | 858 | #ifndef OPENSSL_NO_SSL2 |
bf8fe701 | 859 | debugs(83, 5, "Using SSLv2."); |
62e76326 | 860 | method = SSLv2_client_method(); |
50b4c080 AJ |
861 | #else |
862 | debugs(83, 1, "SSLv2 is not available in this Proxy."); | |
863 | return NULL; | |
864 | #endif | |
62e76326 | 865 | break; |
866 | ||
a7ad6e4e | 867 | case 3: |
bf8fe701 | 868 | debugs(83, 5, "Using SSLv3."); |
62e76326 | 869 | method = SSLv3_client_method(); |
870 | break; | |
871 | ||
a7ad6e4e | 872 | case 4: |
bf8fe701 | 873 | debugs(83, 5, "Using TLSv1."); |
62e76326 | 874 | method = TLSv1_client_method(); |
875 | break; | |
876 | ||
a7ad6e4e | 877 | case 1: |
62e76326 | 878 | |
a7ad6e4e | 879 | default: |
bf8fe701 | 880 | debugs(83, 5, "Using SSLv2/SSLv3."); |
62e76326 | 881 | method = SSLv23_client_method(); |
882 | break; | |
a7ad6e4e | 883 | } |
884 | ||
885 | sslContext = SSL_CTX_new(method); | |
62e76326 | 886 | |
a7ad6e4e | 887 | if (sslContext == NULL) { |
62e76326 | 888 | ssl_error = ERR_get_error(); |
889 | fatalf("Failed to allocate SSL context: %s\n", | |
890 | ERR_error_string(ssl_error, NULL)); | |
a7ad6e4e | 891 | } |
62e76326 | 892 | |
a7ad6e4e | 893 | SSL_CTX_set_options(sslContext, ssl_parse_options(options)); |
894 | ||
895 | if (cipher) { | |
bf8fe701 | 896 | debugs(83, 5, "Using chiper suite " << cipher << "."); |
62e76326 | 897 | |
898 | if (!SSL_CTX_set_cipher_list(sslContext, cipher)) { | |
899 | ssl_error = ERR_get_error(); | |
900 | fatalf("Failed to set SSL cipher suite '%s': %s\n", | |
901 | cipher, ERR_error_string(ssl_error, NULL)); | |
902 | } | |
a7ad6e4e | 903 | } |
62e76326 | 904 | |
a7ad6e4e | 905 | if (certfile) { |
bf8fe701 | 906 | debugs(83, 1, "Using certificate in " << certfile); |
62e76326 | 907 | |
908 | if (!SSL_CTX_use_certificate_chain_file(sslContext, certfile)) { | |
909 | ssl_error = ERR_get_error(); | |
910 | fatalf("Failed to acquire SSL certificate '%s': %s\n", | |
911 | certfile, ERR_error_string(ssl_error, NULL)); | |
912 | } | |
913 | ||
bf8fe701 | 914 | debugs(83, 1, "Using private key in " << keyfile); |
307b83b7 | 915 | ssl_ask_password(sslContext, keyfile); |
62e76326 | 916 | |
917 | if (!SSL_CTX_use_PrivateKey_file(sslContext, keyfile, SSL_FILETYPE_PEM)) { | |
918 | ssl_error = ERR_get_error(); | |
919 | fatalf("Failed to acquire SSL private key '%s': %s\n", | |
920 | keyfile, ERR_error_string(ssl_error, NULL)); | |
921 | } | |
922 | ||
bf8fe701 | 923 | debugs(83, 5, "Comparing private and public SSL keys."); |
62e76326 | 924 | |
925 | if (!SSL_CTX_check_private_key(sslContext)) { | |
926 | ssl_error = ERR_get_error(); | |
927 | fatalf("SSL private key '%s' does not match public key '%s': %s\n", | |
928 | certfile, keyfile, ERR_error_string(ssl_error, NULL)); | |
929 | } | |
a7ad6e4e | 930 | } |
62e76326 | 931 | |
bf8fe701 | 932 | debugs(83, 9, "Setting RSA key generation callback."); |
f484cdf5 | 933 | SSL_CTX_set_tmp_rsa_callback(sslContext, ssl_temp_rsa_cb); |
934 | ||
a7ad6e4e | 935 | if (fl & SSL_FLAG_DONT_VERIFY_PEER) { |
bf8fe701 | 936 | debugs(83, 1, "NOTICE: Peer certificates are not verified for validity!"); |
62e76326 | 937 | SSL_CTX_set_verify(sslContext, SSL_VERIFY_NONE, NULL); |
a7ad6e4e | 938 | } else { |
bf8fe701 | 939 | debugs(83, 9, "Setting certificate verification callback."); |
62e76326 | 940 | SSL_CTX_set_verify(sslContext, SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT, ssl_verify_cb); |
a7ad6e4e | 941 | } |
f484cdf5 | 942 | |
bf8fe701 | 943 | debugs(83, 9, "Setting CA certificate locations."); |
62e76326 | 944 | |
a82a4fe4 | 945 | if ((CAfile || CApath) && !SSL_CTX_load_verify_locations(sslContext, CAfile, CApath)) { |
946 | ssl_error = ERR_get_error(); | |
bf8fe701 | 947 | debugs(83, 1, "Error setting CA certificate locations: " << ERR_error_string(ssl_error, NULL)); |
948 | debugs(83, 1, "continuing anyway..." ); | |
a82a4fe4 | 949 | } |
950 | ||
951 | if (CRLfile) { | |
952 | ssl_load_crl(sslContext, CRLfile); | |
953 | fl |= SSL_FLAG_VERIFY_CRL; | |
954 | } | |
955 | ||
32d002cb | 956 | #if X509_V_FLAG_CRL_CHECK |
a82a4fe4 | 957 | if (fl & SSL_FLAG_VERIFY_CRL_ALL) |
958 | X509_STORE_set_flags(SSL_CTX_get_cert_store(sslContext), X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL); | |
959 | else if (fl & SSL_FLAG_VERIFY_CRL) | |
960 | X509_STORE_set_flags(SSL_CTX_get_cert_store(sslContext), X509_V_FLAG_CRL_CHECK); | |
961 | ||
962 | #endif | |
62e76326 | 963 | |
a7ad6e4e | 964 | if (!(fl & SSL_FLAG_NO_DEFAULT_CA) && |
62e76326 | 965 | !SSL_CTX_set_default_verify_paths(sslContext)) { |
966 | ssl_error = ERR_get_error(); | |
bf8fe701 | 967 | debugs(83, 1, "Error setting default CA certificate location: " << ERR_error_string(ssl_error, NULL) ); |
968 | debugs(83, 1, "continuing anyway..."); | |
f484cdf5 | 969 | } |
62e76326 | 970 | |
d193a436 | 971 | return sslContext; |
f484cdf5 | 972 | } |
973 | ||
63be0a78 | 974 | /// \ingroup ServerProtocolSSLInternal |
d193a436 | 975 | int |
e6ccf245 | 976 | ssl_read_method(int fd, char *buf, int len) |
f484cdf5 | 977 | { |
6de9e64b | 978 | SSL *ssl = fd_table[fd].ssl; |
79d4ccdf | 979 | int i; |
980 | ||
6de9e64b | 981 | #if DONT_DO_THIS |
982 | ||
983 | if (!SSL_is_init_finished(ssl)) { | |
984 | errno = ENOTCONN; | |
985 | return -1; | |
986 | } | |
79d4ccdf | 987 | |
6de9e64b | 988 | #endif |
989 | ||
990 | i = SSL_read(ssl, buf, len); | |
991 | ||
992 | if (i > 0 && SSL_pending(ssl) > 0) { | |
bf8fe701 | 993 | debugs(83, 2, "SSL FD " << fd << " is pending"); |
62e76326 | 994 | fd_table[fd].flags.read_pending = 1; |
79d4ccdf | 995 | } else |
62e76326 | 996 | fd_table[fd].flags.read_pending = 0; |
79d4ccdf | 997 | |
998 | return i; | |
f484cdf5 | 999 | } |
1000 | ||
63be0a78 | 1001 | /// \ingroup ServerProtocolSSLInternal |
d193a436 | 1002 | int |
e6ccf245 | 1003 | ssl_write_method(int fd, const char *buf, int len) |
f484cdf5 | 1004 | { |
6de9e64b | 1005 | SSL *ssl = fd_table[fd].ssl; |
1006 | int i; | |
1007 | ||
1008 | if (!SSL_is_init_finished(ssl)) { | |
1009 | errno = ENOTCONN; | |
1010 | return -1; | |
1011 | } | |
1012 | ||
1013 | i = SSL_write(ssl, buf, len); | |
1014 | ||
1015 | return i; | |
f484cdf5 | 1016 | } |
79d4ccdf | 1017 | |
1018 | void | |
e6ccf245 | 1019 | ssl_shutdown_method(int fd) |
79d4ccdf | 1020 | { |
1021 | SSL *ssl = fd_table[fd].ssl; | |
62e76326 | 1022 | |
79d4ccdf | 1023 | SSL_shutdown(ssl); |
1024 | } | |
a7ad6e4e | 1025 | |
63be0a78 | 1026 | /// \ingroup ServerProtocolSSLInternal |
a7ad6e4e | 1027 | static const char * |
1028 | ssl_get_attribute(X509_NAME * name, const char *attribute_name) | |
1029 | { | |
1030 | static char buffer[1024]; | |
1031 | int nid; | |
1032 | ||
1033 | buffer[0] = '\0'; | |
1034 | ||
1035 | if (strcmp(attribute_name, "DN") == 0) { | |
62e76326 | 1036 | X509_NAME_oneline(name, buffer, sizeof(buffer)); |
1037 | goto done; | |
a7ad6e4e | 1038 | } |
62e76326 | 1039 | |
a7ad6e4e | 1040 | nid = OBJ_txt2nid((char *) attribute_name); |
62e76326 | 1041 | |
a7ad6e4e | 1042 | if (nid == 0) { |
bf8fe701 | 1043 | debugs(83, 1, "WARNING: Unknown SSL attribute name '" << attribute_name << "'"); |
62e76326 | 1044 | return NULL; |
a7ad6e4e | 1045 | } |
62e76326 | 1046 | |
a7ad6e4e | 1047 | X509_NAME_get_text_by_NID(name, nid, buffer, sizeof(buffer)); |
62e76326 | 1048 | |
1049 | done: | |
a7ad6e4e | 1050 | return *buffer ? buffer : NULL; |
1051 | } | |
1052 | ||
63be0a78 | 1053 | /// \ingroup ServerProtocolSSLInternal |
a7ad6e4e | 1054 | const char * |
1055 | sslGetUserAttribute(SSL * ssl, const char *attribute_name) | |
1056 | { | |
1057 | X509 *cert; | |
1058 | X509_NAME *name; | |
23e6c4ae | 1059 | const char *ret; |
a7ad6e4e | 1060 | |
1061 | if (!ssl) | |
62e76326 | 1062 | return NULL; |
a7ad6e4e | 1063 | |
1064 | cert = SSL_get_peer_certificate(ssl); | |
62e76326 | 1065 | |
a7ad6e4e | 1066 | if (!cert) |
62e76326 | 1067 | return NULL; |
a7ad6e4e | 1068 | |
5a4684b6 | 1069 | name = X509_get_subject_name(cert); |
a7ad6e4e | 1070 | |
23e6c4ae | 1071 | ret = ssl_get_attribute(name, attribute_name); |
1072 | ||
1073 | X509_free(cert); | |
1074 | ||
23e6c4ae | 1075 | return ret; |
a7ad6e4e | 1076 | } |
1077 | ||
63be0a78 | 1078 | /// \ingroup ServerProtocolSSLInternal |
a7ad6e4e | 1079 | const char * |
1080 | sslGetCAAttribute(SSL * ssl, const char *attribute_name) | |
1081 | { | |
1082 | X509 *cert; | |
1083 | X509_NAME *name; | |
23e6c4ae | 1084 | const char *ret; |
a7ad6e4e | 1085 | |
1086 | if (!ssl) | |
62e76326 | 1087 | return NULL; |
a7ad6e4e | 1088 | |
1089 | cert = SSL_get_peer_certificate(ssl); | |
62e76326 | 1090 | |
a7ad6e4e | 1091 | if (!cert) |
62e76326 | 1092 | return NULL; |
a7ad6e4e | 1093 | |
5a4684b6 | 1094 | name = X509_get_issuer_name(cert); |
a7ad6e4e | 1095 | |
23e6c4ae | 1096 | ret = ssl_get_attribute(name, attribute_name); |
1097 | ||
1098 | X509_free(cert); | |
1099 | ||
23e6c4ae | 1100 | return ret; |
a7ad6e4e | 1101 | } |
1102 | ||
a7ad6e4e | 1103 | const char * |
1104 | sslGetUserEmail(SSL * ssl) | |
1105 | { | |
e6ceef10 | 1106 | return sslGetUserAttribute(ssl, "emailAddress"); |
a7ad6e4e | 1107 | } |
4ac9968f | 1108 | |
1109 | const char * | |
1110 | sslGetUserCertificatePEM(SSL *ssl) | |
1111 | { | |
1112 | X509 *cert; | |
1113 | BIO *mem; | |
1114 | static char *str = NULL; | |
1115 | char *ptr; | |
1116 | long len; | |
1117 | ||
1118 | safe_free(str); | |
1119 | ||
1120 | if (!ssl) | |
1121 | return NULL; | |
1122 | ||
1123 | cert = SSL_get_peer_certificate(ssl); | |
1124 | ||
1125 | if (!cert) | |
1126 | return NULL; | |
1127 | ||
1128 | mem = BIO_new(BIO_s_mem()); | |
1129 | ||
1130 | PEM_write_bio_X509(mem, cert); | |
1131 | ||
1132 | ||
1133 | len = BIO_get_mem_data(mem, &ptr); | |
1134 | ||
1135 | str = (char *)xmalloc(len + 1); | |
1136 | ||
1137 | memcpy(str, ptr, len); | |
1138 | ||
1139 | str[len] = '\0'; | |
1140 | ||
1141 | X509_free(cert); | |
1142 | ||
1143 | BIO_free(mem); | |
1144 | ||
1145 | return str; | |
1146 | } | |
3d61c476 | 1147 | |
1148 | const char * | |
1149 | sslGetUserCertificateChainPEM(SSL *ssl) | |
1150 | { | |
1151 | STACK_OF(X509) *chain; | |
1152 | BIO *mem; | |
1153 | static char *str = NULL; | |
1154 | char *ptr; | |
1155 | long len; | |
1156 | int i; | |
1157 | ||
1158 | safe_free(str); | |
1159 | ||
1160 | if (!ssl) | |
1161 | return NULL; | |
1162 | ||
1163 | chain = SSL_get_peer_cert_chain(ssl); | |
1164 | ||
1165 | if (!chain) | |
1166 | return sslGetUserCertificatePEM(ssl); | |
1167 | ||
1168 | mem = BIO_new(BIO_s_mem()); | |
1169 | ||
1170 | for (i = 0; i < sk_X509_num(chain); i++) { | |
1171 | X509 *cert = sk_X509_value(chain, i); | |
1172 | PEM_write_bio_X509(mem, cert); | |
1173 | } | |
1174 | ||
1175 | len = BIO_get_mem_data(mem, &ptr); | |
1176 | ||
1177 | str = (char *)xmalloc(len + 1); | |
1178 | memcpy(str, ptr, len); | |
1179 | str[len] = '\0'; | |
1180 | ||
1181 | BIO_free(mem); | |
1182 | ||
1183 | return str; | |
1184 | } | |
454e8283 | 1185 | |
95d2589c CT |
1186 | /// \ingroup ServerProtocolSSLInternal |
1187 | /// Create SSL context and apply ssl certificate and private key to it. | |
1188 | static SSL_CTX * createSSLContext(Ssl::X509_Pointer & x509, Ssl::EVP_PKEY_Pointer & pkey) | |
1189 | { | |
1190 | Ssl::SSL_CTX_Pointer sslContext(SSL_CTX_new(SSLv23_server_method())); | |
1191 | ||
1192 | if (!SSL_CTX_use_certificate(sslContext.get(), x509.get())) | |
1193 | return NULL; | |
1194 | ||
1195 | if (!SSL_CTX_use_PrivateKey(sslContext.get(), pkey.get())) | |
1196 | return NULL; | |
1197 | return sslContext.release(); | |
1198 | } | |
1199 | ||
1200 | SSL_CTX * Ssl::generateSslContextUsingPkeyAndCertFromMemory(const char * data) | |
1201 | { | |
1202 | Ssl::X509_Pointer cert; | |
1203 | Ssl::EVP_PKEY_Pointer pkey; | |
1204 | if (!readCertAndPrivateKeyFromMemory(cert, pkey, data)) | |
1205 | return NULL; | |
1206 | ||
1207 | if (!cert || !pkey) | |
1208 | return NULL; | |
1209 | ||
1210 | return createSSLContext(cert, pkey); | |
1211 | } | |
1212 | ||
1213 | SSL_CTX * Ssl::generateSslContext(char const *host, Ssl::X509_Pointer const & signedX509, Ssl::EVP_PKEY_Pointer const & signedPkey) | |
1214 | { | |
1215 | Ssl::X509_Pointer cert; | |
1216 | Ssl::EVP_PKEY_Pointer pkey; | |
1217 | if (!generateSslCertificateAndPrivateKey(host, signedX509, signedPkey, cert, pkey, NULL)) { | |
1218 | return NULL; | |
1219 | } | |
1220 | if (!cert) | |
1221 | return NULL; | |
1222 | ||
1223 | if (!pkey) | |
1224 | return NULL; | |
1225 | ||
1226 | return createSSLContext(cert, pkey); | |
1227 | } | |
1228 | ||
1229 | bool Ssl::verifySslCertificateDate(SSL_CTX * sslContext) | |
1230 | { | |
1231 | // Temporary ssl for getting X509 certificate from SSL_CTX. | |
1232 | Ssl::SSL_Pointer ssl(SSL_new(sslContext)); | |
1233 | X509 * cert = SSL_get_certificate(ssl.get()); | |
1234 | ASN1_TIME * time_notBefore = X509_get_notBefore(cert); | |
1235 | ASN1_TIME * time_notAfter = X509_get_notAfter(cert); | |
1236 | bool ret = (X509_cmp_current_time(time_notBefore) < 0 && X509_cmp_current_time(time_notAfter) > 0); | |
1237 | return ret; | |
1238 | } | |
1239 | ||
454e8283 | 1240 | #endif /* USE_SSL */ |