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Commit | Line | Data |
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f484cdf5 | 1 | /* |
bbc27441 | 2 | * Copyright (C) 1996-2014 The Squid Software Foundation and contributors |
f484cdf5 | 3 | * |
bbc27441 AJ |
4 | * Squid software is distributed under GPLv2+ license and includes |
5 | * contributions from numerous individuals and organizations. | |
6 | * Please see the COPYING and CONTRIBUTORS files for details. | |
f484cdf5 | 7 | */ |
8 | ||
bbc27441 AJ |
9 | /* DEBUG: section 83 SSL accelerator support */ |
10 | ||
582c2af2 | 11 | #include "squid.h" |
454e8283 | 12 | |
13 | /* MS Visual Studio Projects are monolithic, so we need the following | |
14 | * #if to exclude the SSL code from compile process when not needed. | |
15 | */ | |
cb4f4424 | 16 | #if USE_OPENSSL |
454e8283 | 17 | |
c0941a6a | 18 | #include "acl/FilledChecklist.h" |
86660d64 | 19 | #include "anyp/PortCfg.h" |
b3a8ae1b | 20 | #include "fd.h" |
582c2af2 FC |
21 | #include "fde.h" |
22 | #include "globals.h" | |
86c63190 | 23 | #include "ipc/MemMap.h" |
4d5904f7 | 24 | #include "SquidConfig.h" |
10a69fc0 | 25 | #include "SquidTime.h" |
b3a8ae1b | 26 | #include "ssl/bio.h" |
2cef0ca6 | 27 | #include "ssl/Config.h" |
4d16918e | 28 | #include "ssl/ErrorDetail.h" |
95d2589c | 29 | #include "ssl/gadgets.h" |
602d9612 | 30 | #include "ssl/support.h" |
fc54b8d2 | 31 | #include "URL.h" |
f484cdf5 | 32 | |
1a30fdf5 | 33 | #include <cerrno> |
21d845b1 | 34 | |
10a69fc0 CT |
35 | static void setSessionCallbacks(SSL_CTX *ctx); |
36 | Ipc::MemMap *SslSessionCache = NULL; | |
37 | const char *SslSessionCacheName = "ssl_session_cache"; | |
38 | ||
caf3666d AR |
39 | const char *Ssl::BumpModeStr[] = { |
40 | "none", | |
41 | "client-first", | |
42 | "server-first", | |
5d65362c CT |
43 | "peek", |
44 | "stare", | |
45 | "bump", | |
7f4e9b73 | 46 | "splice", |
5d65362c | 47 | "terminate", |
1110989a | 48 | /*"err",*/ |
caf3666d AR |
49 | NULL |
50 | }; | |
51 | ||
63be0a78 | 52 | /** |
53 | \defgroup ServerProtocolSSLInternal Server-Side SSL Internals | |
54 | \ingroup ServerProtocolSSLAPI | |
55 | */ | |
56 | ||
57 | /// \ingroup ServerProtocolSSLInternal | |
307b83b7 | 58 | static int |
59 | ssl_ask_password_cb(char *buf, int size, int rwflag, void *userdata) | |
60 | { | |
61 | FILE *in; | |
62 | int len = 0; | |
63 | char cmdline[1024]; | |
64 | ||
65 | snprintf(cmdline, sizeof(cmdline), "\"%s\" \"%s\"", Config.Program.ssl_password, (const char *)userdata); | |
66 | in = popen(cmdline, "r"); | |
67 | ||
68 | if (fgets(buf, size, in)) | |
69 | ||
70 | len = strlen(buf); | |
71 | ||
72 | while (len > 0 && (buf[len - 1] == '\n' || buf[len - 1] == '\r')) | |
5e263176 | 73 | --len; |
307b83b7 | 74 | |
75 | buf[len] = '\0'; | |
76 | ||
77 | pclose(in); | |
78 | ||
79 | return len; | |
80 | } | |
81 | ||
63be0a78 | 82 | /// \ingroup ServerProtocolSSLInternal |
307b83b7 | 83 | static void |
84 | ssl_ask_password(SSL_CTX * context, const char * prompt) | |
85 | { | |
86 | if (Config.Program.ssl_password) { | |
87 | SSL_CTX_set_default_passwd_cb(context, ssl_ask_password_cb); | |
88 | SSL_CTX_set_default_passwd_cb_userdata(context, (void *)prompt); | |
89 | } | |
90 | } | |
91 | ||
63be0a78 | 92 | /// \ingroup ServerProtocolSSLInternal |
f484cdf5 | 93 | static RSA * |
e6ccf245 | 94 | ssl_temp_rsa_cb(SSL * ssl, int anInt, int keylen) |
f484cdf5 | 95 | { |
e01f02ed | 96 | static RSA *rsa_512 = NULL; |
97 | static RSA *rsa_1024 = NULL; | |
98 | RSA *rsa = NULL; | |
99 | int newkey = 0; | |
f484cdf5 | 100 | |
e01f02ed | 101 | switch (keylen) { |
102 | ||
103 | case 512: | |
104 | ||
105 | if (!rsa_512) { | |
106 | rsa_512 = RSA_generate_key(512, RSA_F4, NULL, NULL); | |
107 | newkey = 1; | |
108 | } | |
109 | ||
110 | rsa = rsa_512; | |
111 | break; | |
112 | ||
113 | case 1024: | |
114 | ||
115 | if (!rsa_1024) { | |
116 | rsa_1024 = RSA_generate_key(1024, RSA_F4, NULL, NULL); | |
117 | newkey = 1; | |
118 | } | |
119 | ||
120 | rsa = rsa_1024; | |
121 | break; | |
122 | ||
123 | default: | |
e0236918 | 124 | debugs(83, DBG_IMPORTANT, "ssl_temp_rsa_cb: Unexpected key length " << keylen); |
e01f02ed | 125 | return NULL; |
126 | } | |
127 | ||
128 | if (rsa == NULL) { | |
e0236918 | 129 | debugs(83, DBG_IMPORTANT, "ssl_temp_rsa_cb: Failed to generate key " << keylen); |
e01f02ed | 130 | return NULL; |
131 | } | |
132 | ||
133 | if (newkey) { | |
134 | if (do_debug(83, 5)) | |
135 | PEM_write_RSAPrivateKey(debug_log, rsa, NULL, NULL, 0, NULL, NULL); | |
136 | ||
e0236918 | 137 | debugs(83, DBG_IMPORTANT, "Generated ephemeral RSA key of length " << keylen); |
e01f02ed | 138 | } |
62e76326 | 139 | |
f484cdf5 | 140 | return rsa; |
141 | } | |
142 | ||
4d16918e CT |
143 | int Ssl::asn1timeToString(ASN1_TIME *tm, char *buf, int len) |
144 | { | |
145 | BIO *bio; | |
146 | int write = 0; | |
147 | bio = BIO_new(BIO_s_mem()); | |
148 | if (bio) { | |
e34763f4 A |
149 | if (ASN1_TIME_print(bio, tm)) |
150 | write = BIO_read(bio, buf, len-1); | |
151 | BIO_free(bio); | |
4d16918e CT |
152 | } |
153 | buf[write]='\0'; | |
154 | return write; | |
155 | } | |
156 | ||
157 | int Ssl::matchX509CommonNames(X509 *peer_cert, void *check_data, int (*check_func)(void *check_data, ASN1_STRING *cn_data)) | |
158 | { | |
159 | assert(peer_cert); | |
160 | ||
161 | X509_NAME *name = X509_get_subject_name(peer_cert); | |
162 | ||
163 | 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 | 164 | |
4d16918e CT |
165 | ASN1_STRING *cn_data = X509_NAME_ENTRY_get_data(X509_NAME_get_entry(name, i)); |
166 | ||
167 | if ( (*check_func)(check_data, cn_data) == 0) | |
168 | return 1; | |
169 | } | |
170 | ||
171 | STACK_OF(GENERAL_NAME) * altnames; | |
172 | altnames = (STACK_OF(GENERAL_NAME)*)X509_get_ext_d2i(peer_cert, NID_subject_alt_name, NULL, NULL); | |
173 | ||
174 | if (altnames) { | |
175 | int numalts = sk_GENERAL_NAME_num(altnames); | |
d7ae3534 | 176 | for (int i = 0; i < numalts; ++i) { |
4d16918e CT |
177 | const GENERAL_NAME *check = sk_GENERAL_NAME_value(altnames, i); |
178 | if (check->type != GEN_DNS) { | |
179 | continue; | |
180 | } | |
181 | ASN1_STRING *cn_data = check->d.dNSName; | |
e34763f4 | 182 | |
40dd2b59 CT |
183 | if ( (*check_func)(check_data, cn_data) == 0) { |
184 | sk_GENERAL_NAME_pop_free(altnames, GENERAL_NAME_free); | |
4d16918e | 185 | return 1; |
40dd2b59 | 186 | } |
4d16918e CT |
187 | } |
188 | sk_GENERAL_NAME_pop_free(altnames, GENERAL_NAME_free); | |
189 | } | |
190 | return 0; | |
191 | } | |
192 | ||
193 | static int check_domain( void *check_data, ASN1_STRING *cn_data) | |
194 | { | |
195 | char cn[1024]; | |
196 | const char *server = (const char *)check_data; | |
197 | ||
e34763f4 | 198 | if (cn_data->length > (int)sizeof(cn) - 1) { |
4d16918e CT |
199 | return 1; //if does not fit our buffer just ignore |
200 | } | |
201 | memcpy(cn, cn_data->data, cn_data->length); | |
202 | cn[cn_data->length] = '\0'; | |
203 | debugs(83, 4, "Verifying server domain " << server << " to certificate name/subjectAltName " << cn); | |
204 | return matchDomainName(server, cn[0] == '*' ? cn + 1 : cn); | |
205 | } | |
206 | ||
8eb0a7ee CT |
207 | bool Ssl::checkX509ServerValidity(X509 *cert, const char *server) |
208 | { | |
209 | return matchX509CommonNames(cert, (void *)server, check_domain); | |
210 | } | |
211 | ||
63be0a78 | 212 | /// \ingroup ServerProtocolSSLInternal |
f484cdf5 | 213 | static int |
214 | ssl_verify_cb(int ok, X509_STORE_CTX * ctx) | |
215 | { | |
7698a79c CT |
216 | // preserve original ctx->error before SSL_ calls can overwrite it |
217 | Ssl::ssl_error_t error_no = ok ? SSL_ERROR_NONE : ctx->error; | |
218 | ||
219 | char buffer[256] = ""; | |
a7ad6e4e | 220 | SSL *ssl = (SSL *)X509_STORE_CTX_get_ex_data(ctx, SSL_get_ex_data_X509_STORE_CTX_idx()); |
221 | SSL_CTX *sslctx = SSL_get_SSL_CTX(ssl); | |
222 | const char *server = (const char *)SSL_get_ex_data(ssl, ssl_ex_index_server); | |
223 | void *dont_verify_domain = SSL_CTX_get_ex_data(sslctx, ssl_ctx_ex_index_dont_verify_domain); | |
815eaa44 | 224 | ACLChecklist *check = (ACLChecklist*)SSL_get_ex_data(ssl, ssl_ex_index_cert_error_check); |
e7bcc25f | 225 | X509 *peeked_cert = (X509 *)SSL_get_ex_data(ssl, ssl_ex_index_ssl_peeked_cert); |
a7ad6e4e | 226 | X509 *peer_cert = ctx->cert; |
f484cdf5 | 227 | |
a7ad6e4e | 228 | X509_NAME_oneline(X509_get_subject_name(peer_cert), buffer, |
62e76326 | 229 | sizeof(buffer)); |
a7ad6e4e | 230 | |
0ad3ff51 CT |
231 | // detect infinite loops |
232 | uint32_t *validationCounter = static_cast<uint32_t *>(SSL_get_ex_data(ssl, ssl_ex_index_ssl_validation_counter)); | |
233 | if (!validationCounter) { | |
234 | validationCounter = new uint32_t(1); | |
235 | SSL_set_ex_data(ssl, ssl_ex_index_ssl_validation_counter, validationCounter); | |
236 | } else { | |
237 | // overflows allowed if SQUID_CERT_VALIDATION_ITERATION_MAX >= UINT32_MAX | |
238 | (*validationCounter)++; | |
239 | } | |
240 | ||
241 | if ((*validationCounter) >= SQUID_CERT_VALIDATION_ITERATION_MAX) { | |
242 | ok = 0; // or the validation loop will never stop | |
243 | error_no = SQUID_X509_V_ERR_INFINITE_VALIDATION; | |
244 | debugs(83, 2, "SQUID_X509_V_ERR_INFINITE_VALIDATION: " << | |
245 | *validationCounter << " iterations while checking " << buffer); | |
246 | } | |
247 | ||
a7ad6e4e | 248 | if (ok) { |
bf8fe701 | 249 | debugs(83, 5, "SSL Certificate signature OK: " << buffer); |
62e76326 | 250 | |
4747ea4c CT |
251 | // Check for domain mismatch only if the current certificate is the peer certificate. |
252 | if (server && peer_cert == X509_STORE_CTX_get_current_cert(ctx)) { | |
8eb0a7ee | 253 | if (!Ssl::checkX509ServerValidity(peer_cert, server)) { |
815eaa44 | 254 | debugs(83, 2, "SQUID_X509_V_ERR_DOMAIN_MISMATCH: Certificate " << buffer << " does not match domainname " << server); |
62e76326 | 255 | ok = 0; |
4d16918e | 256 | error_no = SQUID_X509_V_ERR_DOMAIN_MISMATCH; |
62e76326 | 257 | } |
258 | } | |
7698a79c | 259 | } |
0db46e4f | 260 | |
e7bcc25f | 261 | if (ok && peeked_cert) { |
7a957a93 | 262 | // Check whether the already peeked certificate matches the new one. |
e7bcc25f CT |
263 | if (X509_cmp(peer_cert, peeked_cert) != 0) { |
264 | debugs(83, 2, "SQUID_X509_V_ERR_CERT_CHANGE: Certificate " << buffer << " does not match peeked certificate"); | |
265 | ok = 0; | |
266 | error_no = SQUID_X509_V_ERR_CERT_CHANGE; | |
267 | } | |
268 | } | |
269 | ||
7698a79c | 270 | if (!ok) { |
62a7607e CT |
271 | X509 *broken_cert = X509_STORE_CTX_get_current_cert(ctx); |
272 | if (!broken_cert) | |
273 | broken_cert = peer_cert; | |
274 | ||
275 | Ssl::CertErrors *errs = static_cast<Ssl::CertErrors *>(SSL_get_ex_data(ssl, ssl_ex_index_ssl_errors)); | |
7a957a93 | 276 | if (!errs) { |
62a7607e | 277 | errs = new Ssl::CertErrors(Ssl::CertError(error_no, broken_cert)); |
7a957a93 | 278 | if (!SSL_set_ex_data(ssl, ssl_ex_index_ssl_errors, (void *)errs)) { |
fb2178bb | 279 | debugs(83, 2, "Failed to set ssl error_no in ssl_verify_cb: Certificate " << buffer); |
7a957a93 AR |
280 | delete errs; |
281 | errs = NULL; | |
fb2178bb | 282 | } |
87f237a9 | 283 | } else // remember another error number |
62a7607e | 284 | errs->push_back_unique(Ssl::CertError(error_no, broken_cert)); |
fb2178bb | 285 | |
7698a79c | 286 | if (const char *err_descr = Ssl::GetErrorDescr(error_no)) |
cf09bec7 CT |
287 | debugs(83, 5, err_descr << ": " << buffer); |
288 | else | |
7698a79c CT |
289 | debugs(83, DBG_IMPORTANT, "SSL unknown certificate error " << error_no << " in " << buffer); |
290 | ||
0ad3ff51 CT |
291 | // Check if the certificate error can be bypassed. |
292 | // Infinity validation loop errors can not bypassed. | |
293 | if (error_no != SQUID_X509_V_ERR_INFINITE_VALIDATION) { | |
294 | if (check) { | |
295 | ACLFilledChecklist *filledCheck = Filled(check); | |
296 | assert(!filledCheck->sslErrors); | |
297 | filledCheck->sslErrors = new Ssl::CertErrors(Ssl::CertError(error_no, broken_cert)); | |
298 | filledCheck->serverCert.resetAndLock(peer_cert); | |
299 | if (check->fastCheck() == ACCESS_ALLOWED) { | |
300 | debugs(83, 3, "bypassing SSL error " << error_no << " in " << buffer); | |
301 | ok = 1; | |
302 | } else { | |
303 | debugs(83, 5, "confirming SSL error " << error_no); | |
304 | } | |
305 | delete filledCheck->sslErrors; | |
306 | filledCheck->sslErrors = NULL; | |
307 | filledCheck->serverCert.reset(NULL); | |
7698a79c | 308 | } |
0ad3ff51 CT |
309 | // If the certificate validator is used then we need to allow all errors and |
310 | // pass them to certficate validator for more processing | |
311 | else if (Ssl::TheConfig.ssl_crt_validator) { | |
7698a79c | 312 | ok = 1; |
0ad3ff51 CT |
313 | // Check if we have stored certificates chain. Store if not. |
314 | if (!SSL_get_ex_data(ssl, ssl_ex_index_ssl_cert_chain)) { | |
315 | STACK_OF(X509) *certStack = X509_STORE_CTX_get1_chain(ctx); | |
316 | if (certStack && !SSL_set_ex_data(ssl, ssl_ex_index_ssl_cert_chain, certStack)) | |
317 | sk_X509_pop_free(certStack, X509_free); | |
318 | } | |
7698a79c | 319 | } |
815eaa44 | 320 | } |
a7ad6e4e | 321 | } |
62e76326 | 322 | |
26ac0430 | 323 | if (!dont_verify_domain && server) {} |
62e76326 | 324 | |
7698a79c | 325 | if (!ok && !SSL_get_ex_data(ssl, ssl_ex_index_ssl_error_detail) ) { |
f622c461 MF |
326 | |
327 | // Find the broken certificate. It may be intermediate. | |
328 | X509 *broken_cert = peer_cert; // reasonable default if search fails | |
329 | // Our SQUID_X509_V_ERR_DOMAIN_MISMATCH implies peer_cert is at fault. | |
330 | if (error_no != SQUID_X509_V_ERR_DOMAIN_MISMATCH) { | |
331 | if (X509 *last_used_cert = X509_STORE_CTX_get_current_cert(ctx)) | |
332 | broken_cert = last_used_cert; | |
333 | } | |
334 | ||
335 | Ssl::ErrorDetail *errDetail = | |
de878a55 | 336 | new Ssl::ErrorDetail(error_no, peer_cert, broken_cert); |
f622c461 | 337 | |
e34763f4 | 338 | if (!SSL_set_ex_data(ssl, ssl_ex_index_ssl_error_detail, errDetail)) { |
4d16918e CT |
339 | debugs(83, 2, "Failed to set Ssl::ErrorDetail in ssl_verify_cb: Certificate " << buffer); |
340 | delete errDetail; | |
341 | } | |
342 | } | |
343 | ||
f484cdf5 | 344 | return ok; |
345 | } | |
346 | ||
63be0a78 | 347 | /// \ingroup ServerProtocolSSLInternal |
26ac0430 | 348 | static struct ssl_option { |
79d4ccdf | 349 | const char *name; |
350 | long value; | |
62e76326 | 351 | } |
352 | ||
353 | ssl_options[] = { | |
79d4ccdf | 354 | |
32d002cb | 355 | #if SSL_OP_MICROSOFT_SESS_ID_BUG |
26ac0430 AJ |
356 | { |
357 | "MICROSOFT_SESS_ID_BUG", SSL_OP_MICROSOFT_SESS_ID_BUG | |
358 | }, | |
673cd7db | 359 | #endif |
32d002cb | 360 | #if SSL_OP_NETSCAPE_CHALLENGE_BUG |
26ac0430 AJ |
361 | { |
362 | "NETSCAPE_CHALLENGE_BUG", SSL_OP_NETSCAPE_CHALLENGE_BUG | |
363 | }, | |
673cd7db | 364 | #endif |
32d002cb | 365 | #if SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG |
26ac0430 AJ |
366 | { |
367 | "NETSCAPE_REUSE_CIPHER_CHANGE_BUG", SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG | |
368 | }, | |
673cd7db | 369 | #endif |
32d002cb | 370 | #if SSL_OP_SSLREF2_REUSE_CERT_TYPE_BUG |
26ac0430 AJ |
371 | { |
372 | "SSLREF2_REUSE_CERT_TYPE_BUG", SSL_OP_SSLREF2_REUSE_CERT_TYPE_BUG | |
373 | }, | |
673cd7db | 374 | #endif |
32d002cb | 375 | #if SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER |
26ac0430 AJ |
376 | { |
377 | "MICROSOFT_BIG_SSLV3_BUFFER", SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER | |
378 | }, | |
673cd7db | 379 | #endif |
32d002cb | 380 | #if SSL_OP_MSIE_SSLV2_RSA_PADDING |
26ac0430 AJ |
381 | { |
382 | "MSIE_SSLV2_RSA_PADDING", SSL_OP_MSIE_SSLV2_RSA_PADDING | |
383 | }, | |
673cd7db | 384 | #endif |
32d002cb | 385 | #if SSL_OP_SSLEAY_080_CLIENT_DH_BUG |
26ac0430 AJ |
386 | { |
387 | "SSLEAY_080_CLIENT_DH_BUG", SSL_OP_SSLEAY_080_CLIENT_DH_BUG | |
388 | }, | |
673cd7db | 389 | #endif |
32d002cb | 390 | #if SSL_OP_TLS_D5_BUG |
26ac0430 AJ |
391 | { |
392 | "TLS_D5_BUG", SSL_OP_TLS_D5_BUG | |
393 | }, | |
673cd7db | 394 | #endif |
32d002cb | 395 | #if SSL_OP_TLS_BLOCK_PADDING_BUG |
26ac0430 AJ |
396 | { |
397 | "TLS_BLOCK_PADDING_BUG", SSL_OP_TLS_BLOCK_PADDING_BUG | |
398 | }, | |
673cd7db | 399 | #endif |
32d002cb | 400 | #if SSL_OP_TLS_ROLLBACK_BUG |
26ac0430 AJ |
401 | { |
402 | "TLS_ROLLBACK_BUG", SSL_OP_TLS_ROLLBACK_BUG | |
403 | }, | |
673cd7db | 404 | #endif |
32d002cb | 405 | #if SSL_OP_ALL |
26ac0430 | 406 | { |
866eafc6 | 407 | "ALL", (long)SSL_OP_ALL |
26ac0430 | 408 | }, |
673cd7db | 409 | #endif |
32d002cb | 410 | #if SSL_OP_SINGLE_DH_USE |
26ac0430 AJ |
411 | { |
412 | "SINGLE_DH_USE", SSL_OP_SINGLE_DH_USE | |
413 | }, | |
673cd7db | 414 | #endif |
32d002cb | 415 | #if SSL_OP_EPHEMERAL_RSA |
26ac0430 AJ |
416 | { |
417 | "EPHEMERAL_RSA", SSL_OP_EPHEMERAL_RSA | |
418 | }, | |
673cd7db | 419 | #endif |
32d002cb | 420 | #if SSL_OP_PKCS1_CHECK_1 |
26ac0430 AJ |
421 | { |
422 | "PKCS1_CHECK_1", SSL_OP_PKCS1_CHECK_1 | |
423 | }, | |
673cd7db | 424 | #endif |
32d002cb | 425 | #if SSL_OP_PKCS1_CHECK_2 |
26ac0430 AJ |
426 | { |
427 | "PKCS1_CHECK_2", SSL_OP_PKCS1_CHECK_2 | |
428 | }, | |
673cd7db | 429 | #endif |
32d002cb | 430 | #if SSL_OP_NETSCAPE_CA_DN_BUG |
26ac0430 AJ |
431 | { |
432 | "NETSCAPE_CA_DN_BUG", SSL_OP_NETSCAPE_CA_DN_BUG | |
433 | }, | |
673cd7db | 434 | #endif |
32d002cb | 435 | #if SSL_OP_NON_EXPORT_FIRST |
26ac0430 AJ |
436 | { |
437 | "NON_EXPORT_FIRST", SSL_OP_NON_EXPORT_FIRST | |
438 | }, | |
673cd7db | 439 | #endif |
32d002cb | 440 | #if SSL_OP_CIPHER_SERVER_PREFERENCE |
26ac0430 AJ |
441 | { |
442 | "CIPHER_SERVER_PREFERENCE", SSL_OP_CIPHER_SERVER_PREFERENCE | |
443 | }, | |
673cd7db | 444 | #endif |
32d002cb | 445 | #if SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG |
26ac0430 AJ |
446 | { |
447 | "NETSCAPE_DEMO_CIPHER_CHANGE_BUG", SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG | |
448 | }, | |
673cd7db | 449 | #endif |
32d002cb | 450 | #if SSL_OP_NO_SSLv2 |
26ac0430 AJ |
451 | { |
452 | "NO_SSLv2", SSL_OP_NO_SSLv2 | |
453 | }, | |
673cd7db | 454 | #endif |
32d002cb | 455 | #if SSL_OP_NO_SSLv3 |
26ac0430 AJ |
456 | { |
457 | "NO_SSLv3", SSL_OP_NO_SSLv3 | |
458 | }, | |
673cd7db | 459 | #endif |
32d002cb | 460 | #if SSL_OP_NO_TLSv1 |
26ac0430 AJ |
461 | { |
462 | "NO_TLSv1", SSL_OP_NO_TLSv1 | |
463 | }, | |
3d96b0e8 AJ |
464 | #endif |
465 | #if SSL_OP_NO_TLSv1_1 | |
466 | { | |
467 | "NO_TLSv1_1", SSL_OP_NO_TLSv1_1 | |
468 | }, | |
469 | #endif | |
470 | #if SSL_OP_NO_TLSv1_2 | |
471 | { | |
472 | "NO_TLSv1_2", SSL_OP_NO_TLSv1_2 | |
473 | }, | |
71606c88 SW |
474 | #endif |
475 | #if SSL_OP_NO_COMPRESSION | |
476 | { | |
477 | "No_Compression", SSL_OP_NO_COMPRESSION | |
478 | }, | |
673cd7db | 479 | #endif |
26ac0430 AJ |
480 | { |
481 | "", 0 | |
482 | }, | |
483 | { | |
484 | NULL, 0 | |
485 | } | |
486 | }; | |
79d4ccdf | 487 | |
63be0a78 | 488 | /// \ingroup ServerProtocolSSLInternal |
86660d64 CT |
489 | long |
490 | Ssl::parse_options(const char *options) | |
79d4ccdf | 491 | { |
943c5f16 | 492 | long op = 0; |
79d4ccdf | 493 | char *tmp; |
494 | char *option; | |
495 | ||
496 | if (!options) | |
62e76326 | 497 | goto no_options; |
79d4ccdf | 498 | |
499 | tmp = xstrdup(options); | |
62e76326 | 500 | |
79d4ccdf | 501 | option = strtok(tmp, ":,"); |
62e76326 | 502 | |
79d4ccdf | 503 | while (option) { |
62e76326 | 504 | |
505 | struct ssl_option *opt = NULL, *opttmp; | |
506 | long value = 0; | |
507 | enum { | |
508 | MODE_ADD, MODE_REMOVE | |
509 | } mode; | |
510 | ||
511 | switch (*option) { | |
512 | ||
513 | case '!': | |
514 | ||
515 | case '-': | |
516 | mode = MODE_REMOVE; | |
d7ae3534 | 517 | ++option; |
62e76326 | 518 | break; |
519 | ||
520 | case '+': | |
521 | mode = MODE_ADD; | |
d7ae3534 | 522 | ++option; |
62e76326 | 523 | break; |
524 | ||
525 | default: | |
526 | mode = MODE_ADD; | |
527 | break; | |
528 | } | |
529 | ||
d7ae3534 | 530 | for (opttmp = ssl_options; opttmp->name; ++opttmp) { |
62e76326 | 531 | if (strcmp(opttmp->name, option) == 0) { |
532 | opt = opttmp; | |
533 | break; | |
534 | } | |
535 | } | |
536 | ||
537 | if (opt) | |
538 | value = opt->value; | |
539 | else if (strncmp(option, "0x", 2) == 0) { | |
540 | /* Special case.. hex specification */ | |
541 | value = strtol(option + 2, NULL, 16); | |
542 | } else { | |
543 | fatalf("Unknown SSL option '%s'", option); | |
544 | value = 0; /* Keep GCC happy */ | |
545 | } | |
546 | ||
547 | switch (mode) { | |
548 | ||
549 | case MODE_ADD: | |
550 | op |= value; | |
551 | break; | |
552 | ||
553 | case MODE_REMOVE: | |
554 | op &= ~value; | |
555 | break; | |
556 | } | |
557 | ||
558 | option = strtok(NULL, ":,"); | |
79d4ccdf | 559 | } |
560 | ||
561 | safe_free(tmp); | |
62e76326 | 562 | |
563 | no_options: | |
79d4ccdf | 564 | return op; |
565 | } | |
566 | ||
63be0a78 | 567 | /// \ingroup ServerProtocolSSLInternal |
a7ad6e4e | 568 | #define SSL_FLAG_NO_DEFAULT_CA (1<<0) |
63be0a78 | 569 | /// \ingroup ServerProtocolSSLInternal |
a7ad6e4e | 570 | #define SSL_FLAG_DELAYED_AUTH (1<<1) |
63be0a78 | 571 | /// \ingroup ServerProtocolSSLInternal |
a7ad6e4e | 572 | #define SSL_FLAG_DONT_VERIFY_PEER (1<<2) |
63be0a78 | 573 | /// \ingroup ServerProtocolSSLInternal |
a7ad6e4e | 574 | #define SSL_FLAG_DONT_VERIFY_DOMAIN (1<<3) |
63be0a78 | 575 | /// \ingroup ServerProtocolSSLInternal |
b13877cc | 576 | #define SSL_FLAG_NO_SESSION_REUSE (1<<4) |
63be0a78 | 577 | /// \ingroup ServerProtocolSSLInternal |
a82a4fe4 | 578 | #define SSL_FLAG_VERIFY_CRL (1<<5) |
63be0a78 | 579 | /// \ingroup ServerProtocolSSLInternal |
a82a4fe4 | 580 | #define SSL_FLAG_VERIFY_CRL_ALL (1<<6) |
a7ad6e4e | 581 | |
63be0a78 | 582 | /// \ingroup ServerProtocolSSLInternal |
86660d64 CT |
583 | long |
584 | Ssl::parse_flags(const char *flags) | |
a7ad6e4e | 585 | { |
586 | long fl = 0; | |
587 | char *tmp; | |
588 | char *flag; | |
589 | ||
590 | if (!flags) | |
62e76326 | 591 | return 0; |
a7ad6e4e | 592 | |
593 | tmp = xstrdup(flags); | |
62e76326 | 594 | |
a7ad6e4e | 595 | flag = strtok(tmp, ":,"); |
62e76326 | 596 | |
a7ad6e4e | 597 | while (flag) { |
62e76326 | 598 | if (strcmp(flag, "NO_DEFAULT_CA") == 0) |
599 | fl |= SSL_FLAG_NO_DEFAULT_CA; | |
600 | else if (strcmp(flag, "DELAYED_AUTH") == 0) | |
601 | fl |= SSL_FLAG_DELAYED_AUTH; | |
602 | else if (strcmp(flag, "DONT_VERIFY_PEER") == 0) | |
603 | fl |= SSL_FLAG_DONT_VERIFY_PEER; | |
604 | else if (strcmp(flag, "DONT_VERIFY_DOMAIN") == 0) | |
605 | fl |= SSL_FLAG_DONT_VERIFY_DOMAIN; | |
b13877cc | 606 | else if (strcmp(flag, "NO_SESSION_REUSE") == 0) |
607 | fl |= SSL_FLAG_NO_SESSION_REUSE; | |
a82a4fe4 | 608 | |
32d002cb | 609 | #if X509_V_FLAG_CRL_CHECK |
a82a4fe4 | 610 | |
611 | else if (strcmp(flag, "VERIFY_CRL") == 0) | |
612 | fl |= SSL_FLAG_VERIFY_CRL; | |
613 | else if (strcmp(flag, "VERIFY_CRL_ALL") == 0) | |
614 | fl |= SSL_FLAG_VERIFY_CRL_ALL; | |
615 | ||
616 | #endif | |
617 | ||
62e76326 | 618 | else |
619 | fatalf("Unknown ssl flag '%s'", flag); | |
620 | ||
621 | flag = strtok(NULL, ":,"); | |
a7ad6e4e | 622 | } |
62e76326 | 623 | |
a7ad6e4e | 624 | safe_free(tmp); |
625 | return fl; | |
626 | } | |
627 | ||
815eaa44 | 628 | // "dup" function for SSL_get_ex_new_index("cert_err_check") |
629 | static int | |
630 | ssl_dupAclChecklist(CRYPTO_EX_DATA *, CRYPTO_EX_DATA *, void *, | |
26ac0430 AJ |
631 | int, long, void *) |
632 | { | |
815eaa44 | 633 | // We do not support duplication of ACLCheckLists. |
634 | // If duplication is needed, we can count copies with cbdata. | |
635 | assert(false); | |
636 | return 0; | |
637 | } | |
638 | ||
639 | // "free" function for SSL_get_ex_new_index("cert_err_check") | |
640 | static void | |
641 | ssl_freeAclChecklist(void *, void *ptr, CRYPTO_EX_DATA *, | |
26ac0430 AJ |
642 | int, long, void *) |
643 | { | |
815eaa44 | 644 | delete static_cast<ACLChecklist *>(ptr); // may be NULL |
645 | } | |
a7ad6e4e | 646 | |
4d16918e CT |
647 | // "free" function for SSL_get_ex_new_index("ssl_error_detail") |
648 | static void | |
649 | ssl_free_ErrorDetail(void *, void *ptr, CRYPTO_EX_DATA *, | |
650 | int, long, void *) | |
651 | { | |
652 | Ssl::ErrorDetail *errDetail = static_cast <Ssl::ErrorDetail *>(ptr); | |
653 | delete errDetail; | |
654 | } | |
655 | ||
fb2178bb | 656 | static void |
7a957a93 | 657 | ssl_free_SslErrors(void *, void *ptr, CRYPTO_EX_DATA *, |
87f237a9 | 658 | int, long, void *) |
fb2178bb | 659 | { |
62a7607e | 660 | Ssl::CertErrors *errs = static_cast <Ssl::CertErrors*>(ptr); |
7a957a93 | 661 | delete errs; |
fb2178bb CT |
662 | } |
663 | ||
0ad3ff51 CT |
664 | // "free" function for SSL_get_ex_new_index("ssl_ex_index_ssl_validation_counter") |
665 | static void | |
666 | ssl_free_int(void *, void *ptr, CRYPTO_EX_DATA *, | |
3cc296c4 | 667 | int, long, void *) |
0ad3ff51 CT |
668 | { |
669 | uint32_t *counter = static_cast <uint32_t *>(ptr); | |
670 | delete counter; | |
671 | } | |
672 | ||
4747ea4c CT |
673 | /// \ingroup ServerProtocolSSLInternal |
674 | /// Callback handler function to release STACK_OF(X509) "ex" data stored | |
675 | /// in an SSL object. | |
676 | static void | |
677 | ssl_free_CertChain(void *, void *ptr, CRYPTO_EX_DATA *, | |
678 | int, long, void *) | |
679 | { | |
680 | STACK_OF(X509) *certsChain = static_cast <STACK_OF(X509) *>(ptr); | |
681 | sk_X509_pop_free(certsChain,X509_free); | |
682 | } | |
683 | ||
e7bcc25f CT |
684 | // "free" function for X509 certificates |
685 | static void | |
686 | ssl_free_X509(void *, void *ptr, CRYPTO_EX_DATA *, | |
87f237a9 | 687 | int, long, void *) |
e7bcc25f CT |
688 | { |
689 | X509 *cert = static_cast <X509 *>(ptr); | |
690 | X509_free(cert); | |
691 | } | |
692 | ||
63be0a78 | 693 | /// \ingroup ServerProtocolSSLInternal |
a7ad6e4e | 694 | static void |
695 | ssl_initialize(void) | |
f484cdf5 | 696 | { |
56a35ad1 AR |
697 | static bool initialized = false; |
698 | if (initialized) | |
699 | return; | |
700 | initialized = true; | |
62e76326 | 701 | |
56a35ad1 AR |
702 | SSL_load_error_strings(); |
703 | SSLeay_add_ssl_algorithms(); | |
62e76326 | 704 | |
56a35ad1 AR |
705 | #if HAVE_OPENSSL_ENGINE_H |
706 | if (Config.SSL.ssl_engine) { | |
707 | ENGINE *e; | |
708 | if (!(e = ENGINE_by_id(Config.SSL.ssl_engine))) | |
709 | fatalf("Unable to find SSL engine '%s'\n", Config.SSL.ssl_engine); | |
710 | ||
711 | if (!ENGINE_set_default(e, ENGINE_METHOD_ALL)) { | |
712 | int ssl_error = ERR_get_error(); | |
713 | fatalf("Failed to initialise SSL engine: %s\n", ERR_error_string(ssl_error, NULL)); | |
62e76326 | 714 | } |
56a35ad1 | 715 | } |
a7ad6e4e | 716 | #else |
56a35ad1 AR |
717 | if (Config.SSL.ssl_engine) |
718 | fatalf("Your OpenSSL has no SSL engine support\n"); | |
a7ad6e4e | 719 | #endif |
62e76326 | 720 | |
a7ad6e4e | 721 | ssl_ex_index_server = SSL_get_ex_new_index(0, (void *) "server", NULL, NULL, NULL); |
722 | ssl_ctx_ex_index_dont_verify_domain = SSL_CTX_get_ex_new_index(0, (void *) "dont_verify_domain", NULL, NULL, NULL); | |
815eaa44 | 723 | ssl_ex_index_cert_error_check = SSL_get_ex_new_index(0, (void *) "cert_error_check", NULL, &ssl_dupAclChecklist, &ssl_freeAclChecklist); |
4d16918e | 724 | ssl_ex_index_ssl_error_detail = SSL_get_ex_new_index(0, (void *) "ssl_error_detail", NULL, NULL, &ssl_free_ErrorDetail); |
e7bcc25f | 725 | ssl_ex_index_ssl_peeked_cert = SSL_get_ex_new_index(0, (void *) "ssl_peeked_cert", NULL, NULL, &ssl_free_X509); |
7a957a93 | 726 | ssl_ex_index_ssl_errors = SSL_get_ex_new_index(0, (void *) "ssl_errors", NULL, NULL, &ssl_free_SslErrors); |
4747ea4c | 727 | ssl_ex_index_ssl_cert_chain = SSL_get_ex_new_index(0, (void *) "ssl_cert_chain", NULL, NULL, &ssl_free_CertChain); |
0ad3ff51 | 728 | ssl_ex_index_ssl_validation_counter = SSL_get_ex_new_index(0, (void *) "ssl_validation_counter", NULL, NULL, &ssl_free_int); |
a7ad6e4e | 729 | } |
730 | ||
63be0a78 | 731 | /// \ingroup ServerProtocolSSLInternal |
a82a4fe4 | 732 | static int |
733 | ssl_load_crl(SSL_CTX *sslContext, const char *CRLfile) | |
734 | { | |
735 | X509_STORE *st = SSL_CTX_get_cert_store(sslContext); | |
736 | X509_CRL *crl; | |
737 | BIO *in = BIO_new_file(CRLfile, "r"); | |
738 | int count = 0; | |
739 | ||
740 | if (!in) { | |
bf8fe701 | 741 | debugs(83, 2, "WARNING: Failed to open CRL file '" << CRLfile << "'"); |
a82a4fe4 | 742 | return 0; |
743 | } | |
744 | ||
745 | while ((crl = PEM_read_bio_X509_CRL(in,NULL,NULL,NULL))) { | |
746 | if (!X509_STORE_add_crl(st, crl)) | |
bf8fe701 | 747 | debugs(83, 2, "WARNING: Failed to add CRL from file '" << CRLfile << "'"); |
a82a4fe4 | 748 | else |
d7ae3534 | 749 | ++count; |
a82a4fe4 | 750 | |
751 | X509_CRL_free(crl); | |
752 | } | |
753 | ||
754 | BIO_free(in); | |
755 | return count; | |
756 | } | |
757 | ||
86660d64 CT |
758 | STACK_OF(X509_CRL) * |
759 | Ssl::loadCrl(const char *CRLFile, long &flags) | |
a7ad6e4e | 760 | { |
86660d64 CT |
761 | X509_CRL *crl; |
762 | BIO *in = BIO_new_file(CRLFile, "r"); | |
763 | if (!in) { | |
764 | debugs(83, 2, "WARNING: Failed to open CRL file '" << CRLFile << "'"); | |
f4e4d4d6 CT |
765 | return NULL; |
766 | } | |
767 | ||
86660d64 CT |
768 | STACK_OF(X509_CRL) *CRLs = sk_X509_CRL_new_null(); |
769 | if (!CRLs) { | |
770 | debugs(83, 2, "WARNING: Failed to allocate X509_CRL stack to load file '" << CRLFile << "'"); | |
50b4c080 | 771 | return NULL; |
86660d64 | 772 | } |
62e76326 | 773 | |
86660d64 CT |
774 | int count = 0; |
775 | while ((crl = PEM_read_bio_X509_CRL(in,NULL,NULL,NULL))) { | |
776 | if (!sk_X509_CRL_push(CRLs, crl)) | |
777 | debugs(83, 2, "WARNING: Failed to add CRL from file '" << CRLFile << "'"); | |
778 | else | |
779 | ++count; | |
780 | } | |
781 | BIO_free(in); | |
62e76326 | 782 | |
86660d64 CT |
783 | if (count) |
784 | flags |= SSL_FLAG_VERIFY_CRL; | |
3d96b0e8 | 785 | |
86660d64 CT |
786 | return CRLs; |
787 | } | |
3d96b0e8 | 788 | |
86660d64 CT |
789 | DH * |
790 | Ssl::readDHParams(const char *dhfile) | |
791 | { | |
792 | FILE *in = fopen(dhfile, "r"); | |
793 | DH *dh = NULL; | |
794 | int codes; | |
62e76326 | 795 | |
86660d64 CT |
796 | if (in) { |
797 | dh = PEM_read_DHparams(in, NULL, NULL, NULL); | |
798 | fclose(in); | |
f484cdf5 | 799 | } |
800 | ||
86660d64 CT |
801 | if (!dh) |
802 | debugs(83, DBG_IMPORTANT, "WARNING: Failed to read DH parameters '" << dhfile << "'"); | |
803 | else if (dh && DH_check(dh, &codes) == 0) { | |
804 | if (codes) { | |
805 | debugs(83, DBG_IMPORTANT, "WARNING: Failed to verify DH parameters '" << dhfile << "' (" << std::hex << codes << ")"); | |
806 | DH_free(dh); | |
807 | dh = NULL; | |
808 | } | |
f484cdf5 | 809 | } |
86660d64 CT |
810 | return dh; |
811 | } | |
62e76326 | 812 | |
86660d64 CT |
813 | static bool |
814 | configureSslContext(SSL_CTX *sslContext, AnyP::PortCfg &port) | |
815 | { | |
816 | int ssl_error; | |
817 | SSL_CTX_set_options(sslContext, port.sslOptions); | |
f484cdf5 | 818 | |
86660d64 CT |
819 | if (port.sslContextSessionId) |
820 | SSL_CTX_set_session_id_context(sslContext, (const unsigned char *)port.sslContextSessionId, strlen(port.sslContextSessionId)); | |
6b2936d5 | 821 | |
86660d64 | 822 | if (port.sslContextFlags & SSL_FLAG_NO_SESSION_REUSE) { |
b13877cc | 823 | SSL_CTX_set_session_cache_mode(sslContext, SSL_SESS_CACHE_OFF); |
824 | } | |
825 | ||
a9d79803 | 826 | if (Config.SSL.unclean_shutdown) { |
bf8fe701 | 827 | debugs(83, 5, "Enabling quiet SSL shutdowns (RFC violation)."); |
a9d79803 | 828 | |
829 | SSL_CTX_set_quiet_shutdown(sslContext, 1); | |
830 | } | |
831 | ||
86660d64 CT |
832 | if (port.cipher) { |
833 | debugs(83, 5, "Using chiper suite " << port.cipher << "."); | |
62e76326 | 834 | |
86660d64 | 835 | if (!SSL_CTX_set_cipher_list(sslContext, port.cipher)) { |
62e76326 | 836 | ssl_error = ERR_get_error(); |
86660d64 CT |
837 | debugs(83, DBG_CRITICAL, "ERROR: Failed to set SSL cipher suite '" << port.cipher << "': " << ERR_error_string(ssl_error, NULL)); |
838 | return false; | |
62e76326 | 839 | } |
79d4ccdf | 840 | } |
62e76326 | 841 | |
bf8fe701 | 842 | debugs(83, 9, "Setting RSA key generation callback."); |
a7ad6e4e | 843 | SSL_CTX_set_tmp_rsa_callback(sslContext, ssl_temp_rsa_cb); |
844 | ||
bf8fe701 | 845 | debugs(83, 9, "Setting CA certificate locations."); |
62e76326 | 846 | |
86660d64 CT |
847 | const char *cafile = port.cafile ? port.cafile : port.clientca; |
848 | if ((cafile || port.capath) && !SSL_CTX_load_verify_locations(sslContext, cafile, port.capath)) { | |
62e76326 | 849 | ssl_error = ERR_get_error(); |
48e7baac | 850 | debugs(83, DBG_IMPORTANT, "WARNING: Ignoring error setting CA certificate locations: " << ERR_error_string(ssl_error, NULL)); |
a7ad6e4e | 851 | } |
62e76326 | 852 | |
86660d64 | 853 | if (!(port.sslContextFlags & SSL_FLAG_NO_DEFAULT_CA) && |
62e76326 | 854 | !SSL_CTX_set_default_verify_paths(sslContext)) { |
855 | ssl_error = ERR_get_error(); | |
48e7baac | 856 | debugs(83, DBG_IMPORTANT, "WARNING: Ignoring error setting default CA certificate location: " << ERR_error_string(ssl_error, NULL)); |
a7ad6e4e | 857 | } |
62e76326 | 858 | |
86660d64 | 859 | if (port.clientCA.get()) { |
8c1ff4ef | 860 | ERR_clear_error(); |
86660d64 | 861 | SSL_CTX_set_client_CA_list(sslContext, port.clientCA.get()); |
62e76326 | 862 | |
86660d64 | 863 | if (port.sslContextFlags & SSL_FLAG_DELAYED_AUTH) { |
bf8fe701 | 864 | debugs(83, 9, "Not requesting client certificates until acl processing requires one"); |
62e76326 | 865 | SSL_CTX_set_verify(sslContext, SSL_VERIFY_NONE, NULL); |
866 | } else { | |
bf8fe701 | 867 | debugs(83, 9, "Requiring client certificates."); |
62e76326 | 868 | SSL_CTX_set_verify(sslContext, SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT, ssl_verify_cb); |
869 | } | |
a82a4fe4 | 870 | |
86660d64 CT |
871 | if (port.clientVerifyCrls.get()) { |
872 | X509_STORE *st = SSL_CTX_get_cert_store(sslContext); | |
873 | for (int i = 0; i < sk_X509_CRL_num(port.clientVerifyCrls.get()); ++i) { | |
874 | X509_CRL *crl = sk_X509_CRL_value(port.clientVerifyCrls.get(), i); | |
875 | if (!X509_STORE_add_crl(st, crl)) | |
876 | debugs(83, 2, "WARNING: Failed to add CRL"); | |
877 | } | |
a82a4fe4 | 878 | } |
879 | ||
32d002cb | 880 | #if X509_V_FLAG_CRL_CHECK |
86660d64 | 881 | if (port.sslContextFlags & SSL_FLAG_VERIFY_CRL_ALL) |
a82a4fe4 | 882 | X509_STORE_set_flags(SSL_CTX_get_cert_store(sslContext), X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL); |
86660d64 | 883 | else if (port.sslContextFlags & SSL_FLAG_VERIFY_CRL) |
a82a4fe4 | 884 | X509_STORE_set_flags(SSL_CTX_get_cert_store(sslContext), X509_V_FLAG_CRL_CHECK); |
a82a4fe4 | 885 | #endif |
886 | ||
a7ad6e4e | 887 | } else { |
bf8fe701 | 888 | debugs(83, 9, "Not requiring any client certificates"); |
62e76326 | 889 | SSL_CTX_set_verify(sslContext, SSL_VERIFY_NONE, NULL); |
a7ad6e4e | 890 | } |
f484cdf5 | 891 | |
86660d64 CT |
892 | if (port.dhParams.get()) { |
893 | SSL_CTX_set_tmp_dh(sslContext, port.dhParams.get()); | |
894 | } | |
35105e4b | 895 | |
86660d64 CT |
896 | if (port.sslContextFlags & SSL_FLAG_DONT_VERIFY_DOMAIN) |
897 | SSL_CTX_set_ex_data(sslContext, ssl_ctx_ex_index_dont_verify_domain, (void *) -1); | |
898 | ||
10a69fc0 CT |
899 | setSessionCallbacks(sslContext); |
900 | ||
86660d64 CT |
901 | return true; |
902 | } | |
903 | ||
904 | SSL_CTX * | |
905 | sslCreateServerContext(AnyP::PortCfg &port) | |
906 | { | |
907 | int ssl_error; | |
908 | SSL_CTX *sslContext; | |
909 | const char *keyfile, *certfile; | |
910 | certfile = port.cert; | |
911 | keyfile = port.key; | |
912 | ||
913 | ssl_initialize(); | |
914 | ||
915 | if (!keyfile) | |
916 | keyfile = certfile; | |
917 | ||
918 | if (!certfile) | |
919 | certfile = keyfile; | |
920 | ||
921 | sslContext = SSL_CTX_new(port.contextMethod); | |
922 | ||
923 | if (sslContext == NULL) { | |
924 | ssl_error = ERR_get_error(); | |
925 | debugs(83, DBG_CRITICAL, "ERROR: Failed to allocate SSL context: " << ERR_error_string(ssl_error, NULL)); | |
926 | return NULL; | |
927 | } | |
928 | ||
929 | if (!SSL_CTX_use_certificate(sslContext, port.signingCert.get())) { | |
930 | ssl_error = ERR_get_error(); | |
931 | debugs(83, DBG_CRITICAL, "ERROR: Failed to acquire SSL certificate '" << certfile << "': " << ERR_error_string(ssl_error, NULL)); | |
932 | SSL_CTX_free(sslContext); | |
933 | return NULL; | |
934 | } | |
935 | ||
936 | if (!SSL_CTX_use_PrivateKey(sslContext, port.signPkey.get())) { | |
937 | ssl_error = ERR_get_error(); | |
938 | debugs(83, DBG_CRITICAL, "ERROR: Failed to acquire SSL private key '" << keyfile << "': " << ERR_error_string(ssl_error, NULL)); | |
939 | SSL_CTX_free(sslContext); | |
940 | return NULL; | |
941 | } | |
942 | ||
943 | Ssl::addChainToSslContext(sslContext, port.certsToChain.get()); | |
944 | ||
945 | /* Alternate code; | |
946 | debugs(83, DBG_IMPORTANT, "Using certificate in " << certfile); | |
947 | ||
948 | if (!SSL_CTX_use_certificate_chain_file(sslContext, certfile)) { | |
949 | ssl_error = ERR_get_error(); | |
950 | debugs(83, DBG_CRITICAL, "ERROR: Failed to acquire SSL certificate '" << certfile << "': " << ERR_error_string(ssl_error, NULL)); | |
951 | SSL_CTX_free(sslContext); | |
952 | return NULL; | |
35105e4b | 953 | } |
954 | ||
86660d64 CT |
955 | debugs(83, DBG_IMPORTANT, "Using private key in " << keyfile); |
956 | ssl_ask_password(sslContext, keyfile); | |
957 | ||
958 | if (!SSL_CTX_use_PrivateKey_file(sslContext, keyfile, SSL_FILETYPE_PEM)) { | |
959 | ssl_error = ERR_get_error(); | |
960 | debugs(83, DBG_CRITICAL, "ERROR: Failed to acquire SSL private key '" << keyfile << "': " << ERR_error_string(ssl_error, NULL)); | |
961 | SSL_CTX_free(sslContext); | |
962 | return NULL; | |
35105e4b | 963 | } |
964 | ||
86660d64 | 965 | debugs(83, 5, "Comparing private and public SSL keys."); |
35105e4b | 966 | |
86660d64 CT |
967 | if (!SSL_CTX_check_private_key(sslContext)) { |
968 | ssl_error = ERR_get_error(); | |
969 | debugs(83, DBG_CRITICAL, "ERROR: SSL private key '" << certfile << "' does not match public key '" << | |
970 | keyfile << "': " << ERR_error_string(ssl_error, NULL)); | |
971 | SSL_CTX_free(sslContext); | |
972 | return NULL; | |
973 | } | |
974 | */ | |
975 | ||
976 | if (!configureSslContext(sslContext, port)) { | |
977 | debugs(83, DBG_CRITICAL, "ERROR: Configuring static SSL context"); | |
978 | SSL_CTX_free(sslContext); | |
979 | return NULL; | |
980 | } | |
62e76326 | 981 | |
a7ad6e4e | 982 | return sslContext; |
a7ad6e4e | 983 | } |
984 | ||
d620ae0e | 985 | int Ssl::OpenSSLtoSquidSSLVersion(int sslVersion) |
a7ad6e4e | 986 | { |
e1f72a8b | 987 | if (sslVersion == SSL2_VERSION) |
d620ae0e | 988 | return 2; |
e1f72a8b | 989 | else if (sslVersion == SSL3_VERSION) |
d620ae0e | 990 | return 3; |
e1f72a8b | 991 | else if (sslVersion == TLS1_VERSION) |
d620ae0e CT |
992 | return 4; |
993 | #if OPENSSL_VERSION_NUMBER >= 0x10001000L | |
e1f72a8b | 994 | else if (sslVersion == TLS1_1_VERSION) |
d620ae0e | 995 | return 5; |
e1f72a8b | 996 | else if (sslVersion == TLS1_2_VERSION) |
d620ae0e CT |
997 | return 6; |
998 | #endif | |
999 | else | |
1000 | return 1; | |
1001 | } | |
1002 | ||
f1c9c850 | 1003 | #if OPENSSL_VERSION_NUMBER < 0x00909000L |
d620ae0e | 1004 | SSL_METHOD * |
f1c9c850 | 1005 | #else |
d620ae0e | 1006 | const SSL_METHOD * |
f1c9c850 | 1007 | #endif |
d620ae0e CT |
1008 | Ssl::method(int version) |
1009 | { | |
1010 | switch (version) { | |
a7ad6e4e | 1011 | |
d620ae0e | 1012 | case 2: |
8693472e | 1013 | #if !defined(OPENSSL_NO_SSL2) |
d620ae0e CT |
1014 | debugs(83, 5, "Using SSLv2."); |
1015 | return SSLv2_client_method(); | |
1016 | #else | |
1017 | debugs(83, DBG_IMPORTANT, "SSLv2 is not available in this Proxy."); | |
1018 | return NULL; | |
1019 | #endif | |
1020 | break; | |
a7ad6e4e | 1021 | |
d620ae0e CT |
1022 | case 3: |
1023 | debugs(83, 5, "Using SSLv3."); | |
1024 | return SSLv3_client_method(); | |
1025 | break; | |
62e76326 | 1026 | |
d620ae0e CT |
1027 | case 4: |
1028 | debugs(83, 5, "Using TLSv1."); | |
1029 | return TLSv1_client_method(); | |
1030 | break; | |
1031 | ||
1032 | case 5: | |
1033 | #if OPENSSL_VERSION_NUMBER >= 0x10001000L // NP: not sure exactly which sub-version yet. | |
1034 | debugs(83, 5, "Using TLSv1.1."); | |
1035 | return TLSv1_1_client_method(); | |
1036 | #else | |
1037 | debugs(83, DBG_IMPORTANT, "TLSv1.1 is not available in this Proxy."); | |
1038 | return NULL; | |
1039 | #endif | |
1040 | break; | |
1041 | ||
1042 | case 6: | |
1043 | #if OPENSSL_VERSION_NUMBER >= 0x10001000L // NP: not sure exactly which sub-version yet. | |
1044 | debugs(83, 5, "Using TLSv1.2"); | |
1045 | return TLSv1_2_client_method(); | |
1046 | #else | |
1047 | debugs(83, DBG_IMPORTANT, "TLSv1.2 is not available in this Proxy."); | |
1048 | return NULL; | |
1049 | #endif | |
1050 | break; | |
a7ad6e4e | 1051 | |
d620ae0e CT |
1052 | case 1: |
1053 | ||
1054 | default: | |
1055 | debugs(83, 5, "Using SSLv2/SSLv3."); | |
1056 | return SSLv23_client_method(); | |
1057 | break; | |
1058 | } | |
1059 | ||
1060 | //Not reached | |
1061 | return NULL; | |
1062 | } | |
1063 | ||
1064 | const SSL_METHOD * | |
1065 | Ssl::serverMethod(int version) | |
1066 | { | |
a7ad6e4e | 1067 | switch (version) { |
62e76326 | 1068 | |
a7ad6e4e | 1069 | case 2: |
50b4c080 | 1070 | #ifndef OPENSSL_NO_SSL2 |
bf8fe701 | 1071 | debugs(83, 5, "Using SSLv2."); |
d620ae0e | 1072 | return SSLv2_server_method(); |
50b4c080 | 1073 | #else |
48e7baac | 1074 | debugs(83, DBG_IMPORTANT, "SSLv2 is not available in this Proxy."); |
50b4c080 AJ |
1075 | return NULL; |
1076 | #endif | |
62e76326 | 1077 | break; |
1078 | ||
a7ad6e4e | 1079 | case 3: |
bf8fe701 | 1080 | debugs(83, 5, "Using SSLv3."); |
d620ae0e | 1081 | return SSLv3_server_method(); |
62e76326 | 1082 | break; |
1083 | ||
a7ad6e4e | 1084 | case 4: |
bf8fe701 | 1085 | debugs(83, 5, "Using TLSv1."); |
d620ae0e | 1086 | return TLSv1_server_method(); |
62e76326 | 1087 | break; |
1088 | ||
3d96b0e8 AJ |
1089 | case 5: |
1090 | #if OPENSSL_VERSION_NUMBER >= 0x10001000L // NP: not sure exactly which sub-version yet. | |
1091 | debugs(83, 5, "Using TLSv1.1."); | |
d620ae0e | 1092 | return TLSv1_1_server_method(); |
3d96b0e8 AJ |
1093 | #else |
1094 | debugs(83, DBG_IMPORTANT, "TLSv1.1 is not available in this Proxy."); | |
1095 | return NULL; | |
1096 | #endif | |
1097 | break; | |
1098 | ||
1099 | case 6: | |
1100 | #if OPENSSL_VERSION_NUMBER >= 0x10001000L // NP: not sure exactly which sub-version yet. | |
1101 | debugs(83, 5, "Using TLSv1.2"); | |
d620ae0e | 1102 | return TLSv1_2_server_method(); |
3d96b0e8 AJ |
1103 | #else |
1104 | debugs(83, DBG_IMPORTANT, "TLSv1.2 is not available in this Proxy."); | |
1105 | return NULL; | |
1106 | #endif | |
1107 | break; | |
1108 | ||
a7ad6e4e | 1109 | case 1: |
62e76326 | 1110 | |
a7ad6e4e | 1111 | default: |
bf8fe701 | 1112 | debugs(83, 5, "Using SSLv2/SSLv3."); |
d620ae0e | 1113 | return SSLv23_server_method(); |
62e76326 | 1114 | break; |
a7ad6e4e | 1115 | } |
1116 | ||
d620ae0e CT |
1117 | //Not reached |
1118 | return NULL; | |
1119 | } | |
1120 | ||
1121 | SSL_CTX * | |
1122 | 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) | |
1123 | { | |
1124 | int ssl_error; | |
31855516 CT |
1125 | Ssl::ContextMethod method; |
1126 | SSL_CTX * sslContext; | |
d620ae0e CT |
1127 | long fl = Ssl::parse_flags(flags); |
1128 | ||
1129 | ssl_initialize(); | |
1130 | ||
1131 | if (!keyfile) | |
1132 | keyfile = certfile; | |
1133 | ||
1134 | if (!certfile) | |
1135 | certfile = keyfile; | |
1136 | ||
1137 | if (!(method = Ssl::method(version))) | |
1138 | return NULL; | |
e1f72a8b | 1139 | |
a7ad6e4e | 1140 | sslContext = SSL_CTX_new(method); |
62e76326 | 1141 | |
a7ad6e4e | 1142 | if (sslContext == NULL) { |
62e76326 | 1143 | ssl_error = ERR_get_error(); |
1144 | fatalf("Failed to allocate SSL context: %s\n", | |
1145 | ERR_error_string(ssl_error, NULL)); | |
a7ad6e4e | 1146 | } |
62e76326 | 1147 | |
86660d64 | 1148 | SSL_CTX_set_options(sslContext, Ssl::parse_options(options)); |
a7ad6e4e | 1149 | |
1150 | if (cipher) { | |
bf8fe701 | 1151 | debugs(83, 5, "Using chiper suite " << cipher << "."); |
62e76326 | 1152 | |
1153 | if (!SSL_CTX_set_cipher_list(sslContext, cipher)) { | |
1154 | ssl_error = ERR_get_error(); | |
1155 | fatalf("Failed to set SSL cipher suite '%s': %s\n", | |
1156 | cipher, ERR_error_string(ssl_error, NULL)); | |
1157 | } | |
a7ad6e4e | 1158 | } |
62e76326 | 1159 | |
a7ad6e4e | 1160 | if (certfile) { |
e0236918 | 1161 | debugs(83, DBG_IMPORTANT, "Using certificate in " << certfile); |
62e76326 | 1162 | |
1163 | if (!SSL_CTX_use_certificate_chain_file(sslContext, certfile)) { | |
1164 | ssl_error = ERR_get_error(); | |
1165 | fatalf("Failed to acquire SSL certificate '%s': %s\n", | |
1166 | certfile, ERR_error_string(ssl_error, NULL)); | |
1167 | } | |
1168 | ||
e0236918 | 1169 | debugs(83, DBG_IMPORTANT, "Using private key in " << keyfile); |
307b83b7 | 1170 | ssl_ask_password(sslContext, keyfile); |
62e76326 | 1171 | |
1172 | if (!SSL_CTX_use_PrivateKey_file(sslContext, keyfile, SSL_FILETYPE_PEM)) { | |
1173 | ssl_error = ERR_get_error(); | |
1174 | fatalf("Failed to acquire SSL private key '%s': %s\n", | |
1175 | keyfile, ERR_error_string(ssl_error, NULL)); | |
1176 | } | |
1177 | ||
bf8fe701 | 1178 | debugs(83, 5, "Comparing private and public SSL keys."); |
62e76326 | 1179 | |
1180 | if (!SSL_CTX_check_private_key(sslContext)) { | |
1181 | ssl_error = ERR_get_error(); | |
1182 | fatalf("SSL private key '%s' does not match public key '%s': %s\n", | |
1183 | certfile, keyfile, ERR_error_string(ssl_error, NULL)); | |
1184 | } | |
a7ad6e4e | 1185 | } |
62e76326 | 1186 | |
bf8fe701 | 1187 | debugs(83, 9, "Setting RSA key generation callback."); |
f484cdf5 | 1188 | SSL_CTX_set_tmp_rsa_callback(sslContext, ssl_temp_rsa_cb); |
1189 | ||
a7ad6e4e | 1190 | if (fl & SSL_FLAG_DONT_VERIFY_PEER) { |
48e7baac | 1191 | debugs(83, 2, "NOTICE: Peer certificates are not verified for validity!"); |
62e76326 | 1192 | SSL_CTX_set_verify(sslContext, SSL_VERIFY_NONE, NULL); |
a7ad6e4e | 1193 | } else { |
bf8fe701 | 1194 | debugs(83, 9, "Setting certificate verification callback."); |
62e76326 | 1195 | SSL_CTX_set_verify(sslContext, SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT, ssl_verify_cb); |
a7ad6e4e | 1196 | } |
f484cdf5 | 1197 | |
bf8fe701 | 1198 | debugs(83, 9, "Setting CA certificate locations."); |
62e76326 | 1199 | |
a82a4fe4 | 1200 | if ((CAfile || CApath) && !SSL_CTX_load_verify_locations(sslContext, CAfile, CApath)) { |
1201 | ssl_error = ERR_get_error(); | |
48e7baac | 1202 | debugs(83, DBG_IMPORTANT, "WARNING: Ignoring error setting CA certificate locations: " << ERR_error_string(ssl_error, NULL)); |
a82a4fe4 | 1203 | } |
1204 | ||
1205 | if (CRLfile) { | |
1206 | ssl_load_crl(sslContext, CRLfile); | |
1207 | fl |= SSL_FLAG_VERIFY_CRL; | |
1208 | } | |
1209 | ||
32d002cb | 1210 | #if X509_V_FLAG_CRL_CHECK |
a82a4fe4 | 1211 | if (fl & SSL_FLAG_VERIFY_CRL_ALL) |
1212 | X509_STORE_set_flags(SSL_CTX_get_cert_store(sslContext), X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL); | |
1213 | else if (fl & SSL_FLAG_VERIFY_CRL) | |
1214 | X509_STORE_set_flags(SSL_CTX_get_cert_store(sslContext), X509_V_FLAG_CRL_CHECK); | |
1215 | ||
1216 | #endif | |
62e76326 | 1217 | |
a7ad6e4e | 1218 | if (!(fl & SSL_FLAG_NO_DEFAULT_CA) && |
62e76326 | 1219 | !SSL_CTX_set_default_verify_paths(sslContext)) { |
1220 | ssl_error = ERR_get_error(); | |
48e7baac | 1221 | debugs(83, DBG_IMPORTANT, "WARNING: Ignoring error setting default CA certificate location: " << ERR_error_string(ssl_error, NULL)); |
f484cdf5 | 1222 | } |
62e76326 | 1223 | |
d193a436 | 1224 | return sslContext; |
f484cdf5 | 1225 | } |
1226 | ||
63be0a78 | 1227 | /// \ingroup ServerProtocolSSLInternal |
d193a436 | 1228 | int |
e6ccf245 | 1229 | ssl_read_method(int fd, char *buf, int len) |
f484cdf5 | 1230 | { |
6de9e64b | 1231 | SSL *ssl = fd_table[fd].ssl; |
79d4ccdf | 1232 | int i; |
1233 | ||
6de9e64b | 1234 | #if DONT_DO_THIS |
1235 | ||
1236 | if (!SSL_is_init_finished(ssl)) { | |
1237 | errno = ENOTCONN; | |
1238 | return -1; | |
1239 | } | |
79d4ccdf | 1240 | |
6de9e64b | 1241 | #endif |
1242 | ||
1243 | i = SSL_read(ssl, buf, len); | |
1244 | ||
1245 | if (i > 0 && SSL_pending(ssl) > 0) { | |
bf8fe701 | 1246 | debugs(83, 2, "SSL FD " << fd << " is pending"); |
be4d35dc | 1247 | fd_table[fd].flags.read_pending = true; |
79d4ccdf | 1248 | } else |
be4d35dc | 1249 | fd_table[fd].flags.read_pending = false; |
79d4ccdf | 1250 | |
1251 | return i; | |
f484cdf5 | 1252 | } |
1253 | ||
63be0a78 | 1254 | /// \ingroup ServerProtocolSSLInternal |
d193a436 | 1255 | int |
e6ccf245 | 1256 | ssl_write_method(int fd, const char *buf, int len) |
f484cdf5 | 1257 | { |
6de9e64b | 1258 | SSL *ssl = fd_table[fd].ssl; |
1259 | int i; | |
1260 | ||
1261 | if (!SSL_is_init_finished(ssl)) { | |
1262 | errno = ENOTCONN; | |
1263 | return -1; | |
1264 | } | |
1265 | ||
1266 | i = SSL_write(ssl, buf, len); | |
1267 | ||
1268 | return i; | |
f484cdf5 | 1269 | } |
79d4ccdf | 1270 | |
1271 | void | |
575d05c4 | 1272 | ssl_shutdown_method(SSL *ssl) |
79d4ccdf | 1273 | { |
79d4ccdf | 1274 | SSL_shutdown(ssl); |
1275 | } | |
a7ad6e4e | 1276 | |
63be0a78 | 1277 | /// \ingroup ServerProtocolSSLInternal |
a7ad6e4e | 1278 | static const char * |
1279 | ssl_get_attribute(X509_NAME * name, const char *attribute_name) | |
1280 | { | |
1281 | static char buffer[1024]; | |
1282 | int nid; | |
1283 | ||
1284 | buffer[0] = '\0'; | |
1285 | ||
1286 | if (strcmp(attribute_name, "DN") == 0) { | |
62e76326 | 1287 | X509_NAME_oneline(name, buffer, sizeof(buffer)); |
1288 | goto done; | |
a7ad6e4e | 1289 | } |
62e76326 | 1290 | |
a7ad6e4e | 1291 | nid = OBJ_txt2nid((char *) attribute_name); |
62e76326 | 1292 | |
a7ad6e4e | 1293 | if (nid == 0) { |
e0236918 | 1294 | debugs(83, DBG_IMPORTANT, "WARNING: Unknown SSL attribute name '" << attribute_name << "'"); |
62e76326 | 1295 | return NULL; |
a7ad6e4e | 1296 | } |
62e76326 | 1297 | |
a7ad6e4e | 1298 | X509_NAME_get_text_by_NID(name, nid, buffer, sizeof(buffer)); |
62e76326 | 1299 | |
1300 | done: | |
a7ad6e4e | 1301 | return *buffer ? buffer : NULL; |
1302 | } | |
1303 | ||
63be0a78 | 1304 | /// \ingroup ServerProtocolSSLInternal |
a7ad6e4e | 1305 | const char * |
00352183 | 1306 | Ssl::GetX509UserAttribute(X509 * cert, const char *attribute_name) |
a7ad6e4e | 1307 | { |
a7ad6e4e | 1308 | X509_NAME *name; |
23e6c4ae | 1309 | const char *ret; |
a7ad6e4e | 1310 | |
a7ad6e4e | 1311 | if (!cert) |
62e76326 | 1312 | return NULL; |
a7ad6e4e | 1313 | |
5a4684b6 | 1314 | name = X509_get_subject_name(cert); |
a7ad6e4e | 1315 | |
23e6c4ae | 1316 | ret = ssl_get_attribute(name, attribute_name); |
1317 | ||
23e6c4ae | 1318 | return ret; |
a7ad6e4e | 1319 | } |
1320 | ||
00352183 AR |
1321 | const char * |
1322 | Ssl::GetX509Fingerprint(X509 * cert, const char *) | |
1323 | { | |
1324 | static char buf[1024]; | |
1325 | if (!cert) | |
1326 | return NULL; | |
960e100b | 1327 | |
00352183 AR |
1328 | unsigned int n; |
1329 | unsigned char md[EVP_MAX_MD_SIZE]; | |
1330 | if (!X509_digest(cert, EVP_sha1(), md, &n)) | |
1331 | return NULL; | |
1332 | ||
1333 | assert(3 * n + 1 < sizeof(buf)); | |
1334 | ||
1335 | char *s = buf; | |
1336 | for (unsigned int i=0; i < n; ++i, s += 3) { | |
1337 | const char term = (i + 1 < n) ? ':' : '\0'; | |
1338 | snprintf(s, 4, "%02X%c", md[i], term); | |
1339 | } | |
1340 | ||
1341 | return buf; | |
1342 | } | |
1343 | ||
63be0a78 | 1344 | /// \ingroup ServerProtocolSSLInternal |
a7ad6e4e | 1345 | const char * |
00352183 | 1346 | Ssl::GetX509CAAttribute(X509 * cert, const char *attribute_name) |
a7ad6e4e | 1347 | { |
00352183 | 1348 | |
a7ad6e4e | 1349 | X509_NAME *name; |
23e6c4ae | 1350 | const char *ret; |
a7ad6e4e | 1351 | |
a7ad6e4e | 1352 | if (!cert) |
62e76326 | 1353 | return NULL; |
a7ad6e4e | 1354 | |
5a4684b6 | 1355 | name = X509_get_issuer_name(cert); |
a7ad6e4e | 1356 | |
23e6c4ae | 1357 | ret = ssl_get_attribute(name, attribute_name); |
1358 | ||
00352183 AR |
1359 | return ret; |
1360 | } | |
1361 | ||
1362 | const char *sslGetUserAttribute(SSL *ssl, const char *attribute_name) | |
1363 | { | |
1364 | if (!ssl) | |
1365 | return NULL; | |
1366 | ||
1367 | X509 *cert = SSL_get_peer_certificate(ssl); | |
1368 | ||
1369 | const char *attr = Ssl::GetX509UserAttribute(cert, attribute_name); | |
1370 | ||
23e6c4ae | 1371 | X509_free(cert); |
00352183 AR |
1372 | return attr; |
1373 | } | |
23e6c4ae | 1374 | |
00352183 AR |
1375 | const char *sslGetCAAttribute(SSL *ssl, const char *attribute_name) |
1376 | { | |
1377 | if (!ssl) | |
1378 | return NULL; | |
1379 | ||
1380 | X509 *cert = SSL_get_peer_certificate(ssl); | |
1381 | ||
1382 | const char *attr = Ssl::GetX509CAAttribute(cert, attribute_name); | |
1383 | ||
1384 | X509_free(cert); | |
1385 | return attr; | |
a7ad6e4e | 1386 | } |
1387 | ||
a7ad6e4e | 1388 | const char * |
1389 | sslGetUserEmail(SSL * ssl) | |
1390 | { | |
e6ceef10 | 1391 | return sslGetUserAttribute(ssl, "emailAddress"); |
a7ad6e4e | 1392 | } |
4ac9968f | 1393 | |
1394 | const char * | |
1395 | sslGetUserCertificatePEM(SSL *ssl) | |
1396 | { | |
1397 | X509 *cert; | |
1398 | BIO *mem; | |
1399 | static char *str = NULL; | |
1400 | char *ptr; | |
1401 | long len; | |
1402 | ||
1403 | safe_free(str); | |
1404 | ||
1405 | if (!ssl) | |
1406 | return NULL; | |
1407 | ||
1408 | cert = SSL_get_peer_certificate(ssl); | |
1409 | ||
1410 | if (!cert) | |
1411 | return NULL; | |
1412 | ||
1413 | mem = BIO_new(BIO_s_mem()); | |
1414 | ||
1415 | PEM_write_bio_X509(mem, cert); | |
1416 | ||
4ac9968f | 1417 | len = BIO_get_mem_data(mem, &ptr); |
1418 | ||
1419 | str = (char *)xmalloc(len + 1); | |
1420 | ||
1421 | memcpy(str, ptr, len); | |
1422 | ||
1423 | str[len] = '\0'; | |
1424 | ||
1425 | X509_free(cert); | |
1426 | ||
1427 | BIO_free(mem); | |
1428 | ||
1429 | return str; | |
1430 | } | |
3d61c476 | 1431 | |
1432 | const char * | |
1433 | sslGetUserCertificateChainPEM(SSL *ssl) | |
1434 | { | |
1435 | STACK_OF(X509) *chain; | |
1436 | BIO *mem; | |
1437 | static char *str = NULL; | |
1438 | char *ptr; | |
1439 | long len; | |
1440 | int i; | |
1441 | ||
1442 | safe_free(str); | |
1443 | ||
1444 | if (!ssl) | |
1445 | return NULL; | |
1446 | ||
1447 | chain = SSL_get_peer_cert_chain(ssl); | |
1448 | ||
1449 | if (!chain) | |
1450 | return sslGetUserCertificatePEM(ssl); | |
1451 | ||
1452 | mem = BIO_new(BIO_s_mem()); | |
1453 | ||
d7ae3534 | 1454 | for (i = 0; i < sk_X509_num(chain); ++i) { |
3d61c476 | 1455 | X509 *cert = sk_X509_value(chain, i); |
1456 | PEM_write_bio_X509(mem, cert); | |
1457 | } | |
1458 | ||
1459 | len = BIO_get_mem_data(mem, &ptr); | |
1460 | ||
1461 | str = (char *)xmalloc(len + 1); | |
1462 | memcpy(str, ptr, len); | |
1463 | str[len] = '\0'; | |
1464 | ||
1465 | BIO_free(mem); | |
1466 | ||
1467 | return str; | |
1468 | } | |
454e8283 | 1469 | |
86660d64 CT |
1470 | Ssl::ContextMethod |
1471 | Ssl::contextMethod(int version) | |
1472 | { | |
1473 | Ssl::ContextMethod method; | |
1474 | ||
1475 | switch (version) { | |
1476 | ||
1477 | case 2: | |
1478 | #ifndef OPENSSL_NO_SSL2 | |
1479 | debugs(83, 5, "Using SSLv2."); | |
1480 | method = SSLv2_server_method(); | |
1481 | #else | |
1482 | debugs(83, DBG_IMPORTANT, "SSLv2 is not available in this Proxy."); | |
1483 | return NULL; | |
1484 | #endif | |
1485 | break; | |
1486 | ||
1487 | case 3: | |
1488 | debugs(83, 5, "Using SSLv3."); | |
1489 | method = SSLv3_server_method(); | |
1490 | break; | |
1491 | ||
1492 | case 4: | |
1493 | debugs(83, 5, "Using TLSv1."); | |
1494 | method = TLSv1_server_method(); | |
1495 | break; | |
1496 | ||
1497 | case 5: | |
1498 | #if OPENSSL_VERSION_NUMBER >= 0x10001000L // NP: not sure exactly which sub-version yet. | |
1499 | debugs(83, 5, "Using TLSv1.1."); | |
1500 | method = TLSv1_1_server_method(); | |
1501 | #else | |
1502 | debugs(83, DBG_IMPORTANT, "TLSv1.1 is not available in this Proxy."); | |
1503 | return NULL; | |
1504 | #endif | |
1505 | break; | |
1506 | ||
1507 | case 6: | |
1508 | #if OPENSSL_VERSION_NUMBER >= 0x10001000L // NP: not sure exactly which sub-version yet. | |
1509 | debugs(83, 5, "Using TLSv1.2"); | |
1510 | method = TLSv1_2_server_method(); | |
1511 | #else | |
1512 | debugs(83, DBG_IMPORTANT, "TLSv1.2 is not available in this Proxy."); | |
1513 | return NULL; | |
1514 | #endif | |
1515 | break; | |
1516 | ||
1517 | case 1: | |
1518 | ||
1519 | default: | |
1520 | debugs(83, 5, "Using SSLv2/SSLv3."); | |
1521 | method = SSLv23_server_method(); | |
1522 | break; | |
1523 | } | |
1524 | return method; | |
1525 | } | |
1526 | ||
95d2589c CT |
1527 | /// \ingroup ServerProtocolSSLInternal |
1528 | /// Create SSL context and apply ssl certificate and private key to it. | |
d620ae0e CT |
1529 | SSL_CTX * |
1530 | Ssl::createSSLContext(Ssl::X509_Pointer & x509, Ssl::EVP_PKEY_Pointer & pkey, AnyP::PortCfg &port) | |
95d2589c | 1531 | { |
86660d64 | 1532 | Ssl::SSL_CTX_Pointer sslContext(SSL_CTX_new(port.contextMethod)); |
95d2589c CT |
1533 | |
1534 | if (!SSL_CTX_use_certificate(sslContext.get(), x509.get())) | |
1535 | return NULL; | |
1536 | ||
1537 | if (!SSL_CTX_use_PrivateKey(sslContext.get(), pkey.get())) | |
1538 | return NULL; | |
86660d64 CT |
1539 | |
1540 | if (!configureSslContext(sslContext.get(), port)) | |
1541 | return NULL; | |
1542 | ||
95d2589c CT |
1543 | return sslContext.release(); |
1544 | } | |
1545 | ||
86660d64 CT |
1546 | SSL_CTX * |
1547 | Ssl::generateSslContextUsingPkeyAndCertFromMemory(const char * data, AnyP::PortCfg &port) | |
95d2589c CT |
1548 | { |
1549 | Ssl::X509_Pointer cert; | |
1550 | Ssl::EVP_PKEY_Pointer pkey; | |
1551 | if (!readCertAndPrivateKeyFromMemory(cert, pkey, data)) | |
1552 | return NULL; | |
1553 | ||
1554 | if (!cert || !pkey) | |
1555 | return NULL; | |
1556 | ||
86660d64 | 1557 | return createSSLContext(cert, pkey, port); |
95d2589c CT |
1558 | } |
1559 | ||
86660d64 CT |
1560 | SSL_CTX * |
1561 | Ssl::generateSslContext(CertificateProperties const &properties, AnyP::PortCfg &port) | |
95d2589c CT |
1562 | { |
1563 | Ssl::X509_Pointer cert; | |
1564 | Ssl::EVP_PKEY_Pointer pkey; | |
aebe6888 | 1565 | if (!generateSslCertificate(cert, pkey, properties)) |
95d2589c | 1566 | return NULL; |
9a90aace | 1567 | |
95d2589c CT |
1568 | if (!cert) |
1569 | return NULL; | |
1570 | ||
1571 | if (!pkey) | |
1572 | return NULL; | |
1573 | ||
86660d64 | 1574 | return createSSLContext(cert, pkey, port); |
95d2589c CT |
1575 | } |
1576 | ||
d620ae0e CT |
1577 | bool |
1578 | Ssl::configureSSL(SSL *ssl, CertificateProperties const &properties, AnyP::PortCfg &port) | |
1579 | { | |
1580 | Ssl::X509_Pointer cert; | |
1581 | Ssl::EVP_PKEY_Pointer pkey; | |
1582 | if (!generateSslCertificate(cert, pkey, properties)) | |
1583 | return false; | |
1584 | ||
1585 | if (!cert) | |
1586 | return false; | |
1587 | ||
1588 | if (!pkey) | |
1589 | return false; | |
1590 | ||
1591 | if (!SSL_use_certificate(ssl, cert.get())) | |
1592 | return false; | |
1593 | ||
1594 | if (!SSL_use_PrivateKey(ssl, pkey.get())) | |
1595 | return false; | |
1596 | ||
1597 | return true; | |
1598 | } | |
1599 | ||
1600 | bool | |
1601 | Ssl::configureSSLUsingPkeyAndCertFromMemory(SSL *ssl, const char *data, AnyP::PortCfg &port) | |
1602 | { | |
1603 | Ssl::X509_Pointer cert; | |
1604 | Ssl::EVP_PKEY_Pointer pkey; | |
1605 | if (!readCertAndPrivateKeyFromMemory(cert, pkey, data)) | |
1606 | return false; | |
1607 | ||
1608 | if (!cert || !pkey) | |
1609 | return false; | |
1610 | ||
1611 | if (!SSL_use_certificate(ssl, cert.get())) | |
1612 | return false; | |
1613 | ||
1614 | if (!SSL_use_PrivateKey(ssl, pkey.get())) | |
1615 | return false; | |
1616 | ||
1617 | return true; | |
1618 | } | |
1619 | ||
4ece76b2 | 1620 | bool Ssl::verifySslCertificate(SSL_CTX * sslContext, CertificateProperties const &properties) |
95d2589c | 1621 | { |
b8658552 CT |
1622 | // SSL_get_certificate is buggy in openssl versions 1.0.1d and 1.0.1e |
1623 | // Try to retrieve certificate directly from SSL_CTX object | |
fc321c30 | 1624 | #if SQUID_USE_SSLGETCERTIFICATE_HACK |
b8658552 CT |
1625 | X509 ***pCert = (X509 ***)sslContext->cert; |
1626 | X509 * cert = pCert && *pCert ? **pCert : NULL; | |
fc321c30 CT |
1627 | #elif SQUID_SSLGETCERTIFICATE_BUGGY |
1628 | X509 * cert = NULL; | |
1629 | assert(0); | |
b8658552 | 1630 | #else |
95d2589c CT |
1631 | // Temporary ssl for getting X509 certificate from SSL_CTX. |
1632 | Ssl::SSL_Pointer ssl(SSL_new(sslContext)); | |
1633 | X509 * cert = SSL_get_certificate(ssl.get()); | |
b8658552 CT |
1634 | #endif |
1635 | if (!cert) | |
1636 | return false; | |
95d2589c CT |
1637 | ASN1_TIME * time_notBefore = X509_get_notBefore(cert); |
1638 | ASN1_TIME * time_notAfter = X509_get_notAfter(cert); | |
1639 | bool ret = (X509_cmp_current_time(time_notBefore) < 0 && X509_cmp_current_time(time_notAfter) > 0); | |
e7bcc25f CT |
1640 | if (!ret) |
1641 | return false; | |
1642 | ||
4ece76b2 | 1643 | return certificateMatchesProperties(cert, properties); |
95d2589c CT |
1644 | } |
1645 | ||
253749a8 CT |
1646 | bool |
1647 | Ssl::setClientSNI(SSL *ssl, const char *fqdn) | |
1648 | { | |
1649 | //The SSL_CTRL_SET_TLSEXT_HOSTNAME is a openssl macro which indicates | |
1650 | // if the TLS servername extension (SNI) is enabled in openssl library. | |
1651 | #if defined(SSL_CTRL_SET_TLSEXT_HOSTNAME) | |
1652 | if (!SSL_set_tlsext_host_name(ssl, fqdn)) { | |
1653 | const int ssl_error = ERR_get_error(); | |
1654 | debugs(83, 3, "WARNING: unable to set TLS servername extension (SNI): " << | |
1655 | ERR_error_string(ssl_error, NULL) << "\n"); | |
1656 | return false; | |
1657 | } | |
1658 | return true; | |
1659 | #else | |
1660 | debugs(83, 7, "no support for TLS servername extension (SNI)\n"); | |
1661 | return false; | |
1662 | #endif | |
1663 | } | |
1664 | ||
a594dbfa CT |
1665 | void Ssl::addChainToSslContext(SSL_CTX *sslContext, STACK_OF(X509) *chain) |
1666 | { | |
1667 | if (!chain) | |
1668 | return; | |
1669 | ||
d7ae3534 | 1670 | for (int i = 0; i < sk_X509_num(chain); ++i) { |
a594dbfa CT |
1671 | X509 *cert = sk_X509_value(chain, i); |
1672 | if (SSL_CTX_add_extra_chain_cert(sslContext, cert)) { | |
1673 | // increase the certificate lock | |
1674 | CRYPTO_add(&(cert->references),1,CRYPTO_LOCK_X509); | |
1675 | } else { | |
1676 | const int ssl_error = ERR_get_error(); | |
1677 | debugs(83, DBG_IMPORTANT, "WARNING: can not add certificate to SSL context chain: " << ERR_error_string(ssl_error, NULL)); | |
1678 | } | |
1679 | } | |
1680 | } | |
1681 | ||
1682 | /** | |
1683 | \ingroup ServerProtocolSSLInternal | |
1684 | * Read certificate from file. | |
1685 | * See also: static readSslX509Certificate function, gadgets.cc file | |
1686 | */ | |
1687 | static X509 * readSslX509CertificatesChain(char const * certFilename, STACK_OF(X509)* chain) | |
1688 | { | |
1689 | if (!certFilename) | |
1690 | return NULL; | |
1691 | Ssl::BIO_Pointer bio(BIO_new(BIO_s_file_internal())); | |
1692 | if (!bio) | |
1693 | return NULL; | |
1694 | if (!BIO_read_filename(bio.get(), certFilename)) | |
1695 | return NULL; | |
1696 | X509 *certificate = PEM_read_bio_X509(bio.get(), NULL, NULL, NULL); | |
1697 | ||
1698 | if (certificate && chain) { | |
1699 | ||
c11211d9 | 1700 | if (X509_check_issued(certificate, certificate) == X509_V_OK) |
a594dbfa CT |
1701 | debugs(83, 5, "Certificate is self-signed, will not be chained"); |
1702 | else { | |
a411d213 | 1703 | // and add to the chain any other certificate exist in the file |
a594dbfa CT |
1704 | while (X509 *ca = PEM_read_bio_X509(bio.get(), NULL, NULL, NULL)) { |
1705 | if (!sk_X509_push(chain, ca)) | |
1706 | debugs(83, DBG_IMPORTANT, "WARNING: unable to add CA certificate to cert chain"); | |
1707 | } | |
1708 | } | |
1709 | } | |
c11211d9 | 1710 | |
a594dbfa CT |
1711 | return certificate; |
1712 | } | |
1713 | ||
1714 | void Ssl::readCertChainAndPrivateKeyFromFiles(X509_Pointer & cert, EVP_PKEY_Pointer & pkey, X509_STACK_Pointer & chain, char const * certFilename, char const * keyFilename) | |
1715 | { | |
1716 | if (keyFilename == NULL) | |
1717 | keyFilename = certFilename; | |
86660d64 CT |
1718 | |
1719 | if (certFilename == NULL) | |
1720 | certFilename = keyFilename; | |
1721 | ||
1722 | debugs(83, DBG_IMPORTANT, "Using certificate in " << certFilename); | |
1723 | ||
a594dbfa CT |
1724 | if (!chain) |
1725 | chain.reset(sk_X509_new_null()); | |
1726 | if (!chain) | |
1727 | debugs(83, DBG_IMPORTANT, "WARNING: unable to allocate memory for cert chain"); | |
37144aca AR |
1728 | // XXX: ssl_ask_password_cb needs SSL_CTX_set_default_passwd_cb_userdata() |
1729 | // so this may not fully work iff Config.Program.ssl_password is set. | |
1730 | pem_password_cb *cb = ::Config.Program.ssl_password ? &ssl_ask_password_cb : NULL; | |
1731 | pkey.reset(readSslPrivateKey(keyFilename, cb)); | |
a594dbfa CT |
1732 | cert.reset(readSslX509CertificatesChain(certFilename, chain.get())); |
1733 | if (!pkey || !cert || !X509_check_private_key(cert.get(), pkey.get())) { | |
1734 | pkey.reset(NULL); | |
1735 | cert.reset(NULL); | |
1736 | } | |
1737 | } | |
1738 | ||
95588170 CT |
1739 | bool Ssl::generateUntrustedCert(X509_Pointer &untrustedCert, EVP_PKEY_Pointer &untrustedPkey, X509_Pointer const &cert, EVP_PKEY_Pointer const & pkey) |
1740 | { | |
1741 | // Generate the self-signed certificate, using a hard-coded subject prefix | |
1742 | Ssl::CertificateProperties certProperties; | |
1743 | if (const char *cn = CommonHostName(cert.get())) { | |
1744 | certProperties.commonName = "Not trusted by \""; | |
1745 | certProperties.commonName += cn; | |
1746 | certProperties.commonName += "\""; | |
87f237a9 | 1747 | } else if (const char *org = getOrganization(cert.get())) { |
95588170 CT |
1748 | certProperties.commonName = "Not trusted by \""; |
1749 | certProperties.commonName += org; | |
1750 | certProperties.commonName += "\""; | |
87f237a9 | 1751 | } else |
95588170 CT |
1752 | certProperties.commonName = "Not trusted"; |
1753 | certProperties.setCommonName = true; | |
1754 | // O, OU, and other CA subject fields will be mimicked | |
1755 | // Expiration date and other common properties will be mimicked | |
1756 | certProperties.signAlgorithm = Ssl::algSignSelf; | |
1757 | certProperties.signWithPkey.resetAndLock(pkey.get()); | |
1758 | certProperties.mimicCert.resetAndLock(cert.get()); | |
1759 | return Ssl::generateSslCertificate(untrustedCert, untrustedPkey, certProperties); | |
1760 | } | |
1761 | ||
b3a8ae1b | 1762 | SSL * |
d620ae0e | 1763 | SslCreate(SSL_CTX *sslContext, const int fd, Ssl::Bio::Type type, const char *squidCtx) |
b3a8ae1b AR |
1764 | { |
1765 | const char *errAction = NULL; | |
1766 | int errCode = 0; | |
1767 | if (SSL *ssl = SSL_new(sslContext)) { | |
1768 | // without BIO, we would call SSL_set_fd(ssl, fd) instead | |
d620ae0e | 1769 | if (BIO *bio = Ssl::Bio::Create(fd, type)) { |
b3a8ae1b AR |
1770 | Ssl::Bio::Link(ssl, bio); // cannot fail |
1771 | ||
1772 | fd_table[fd].ssl = ssl; | |
1773 | fd_table[fd].read_method = &ssl_read_method; | |
1774 | fd_table[fd].write_method = &ssl_write_method; | |
1775 | fd_note(fd, squidCtx); | |
1776 | ||
1777 | return ssl; | |
1778 | } | |
1779 | errCode = ERR_get_error(); | |
1780 | errAction = "failed to initialize I/O"; | |
1781 | SSL_free(ssl); | |
1782 | } else { | |
1783 | errCode = ERR_get_error(); | |
1784 | errAction = "failed to allocate handle"; | |
1785 | } | |
1786 | ||
1787 | debugs(83, DBG_IMPORTANT, "ERROR: " << squidCtx << ' ' << errAction << | |
1788 | ": " << ERR_error_string(errCode, NULL)); | |
1789 | return NULL; | |
1790 | } | |
1791 | ||
d620ae0e CT |
1792 | SSL * |
1793 | Ssl::CreateClient(SSL_CTX *sslContext, const int fd, const char *squidCtx) | |
1794 | { | |
1795 | return SslCreate(sslContext, fd, Ssl::Bio::BIO_TO_SERVER, squidCtx); | |
1796 | } | |
1797 | ||
1798 | SSL * | |
1799 | Ssl::CreateServer(SSL_CTX *sslContext, const int fd, const char *squidCtx) | |
1800 | { | |
1801 | return SslCreate(sslContext, fd, Ssl::Bio::BIO_TO_CLIENT, squidCtx); | |
1802 | } | |
1803 | ||
62a7607e | 1804 | Ssl::CertError::CertError(ssl_error_t anErr, X509 *aCert): code(anErr) |
170cb017 | 1805 | { |
62a7607e CT |
1806 | cert.resetAndLock(aCert); |
1807 | } | |
1808 | ||
1809 | Ssl::CertError::CertError(CertError const &err): code(err.code) | |
1810 | { | |
1811 | cert.resetAndLock(err.cert.get()); | |
1812 | } | |
1813 | ||
1814 | Ssl::CertError & | |
170cb017 | 1815 | Ssl::CertError::operator = (const CertError &old) |
62a7607e | 1816 | { |
170cb017 | 1817 | code = old.code; |
62a7607e CT |
1818 | cert.resetAndLock(old.cert.get()); |
1819 | return *this; | |
1820 | } | |
1821 | ||
1822 | bool | |
1823 | Ssl::CertError::operator == (const CertError &ce) const | |
1824 | { | |
1825 | return code == ce.code && cert.get() == ce.cert.get(); | |
1826 | } | |
1827 | ||
1828 | bool | |
1829 | Ssl::CertError::operator != (const CertError &ce) const | |
1830 | { | |
1831 | return code != ce.code || cert.get() != ce.cert.get(); | |
1832 | } | |
1833 | ||
10a69fc0 CT |
1834 | static int |
1835 | store_session_cb(SSL *ssl, SSL_SESSION *session) | |
1836 | { | |
1837 | if (!SslSessionCache) | |
1838 | return 0; | |
1839 | ||
1840 | debugs(83, 5, "Request to store SSL Session "); | |
1841 | ||
1842 | SSL_SESSION_set_timeout(session, Config.SSL.session_ttl); | |
1843 | ||
1844 | unsigned char *id = session->session_id; | |
1845 | unsigned int idlen = session->session_id_length; | |
1846 | unsigned char key[MEMMAP_SLOT_KEY_SIZE]; | |
1847 | // Session ids are of size 32bytes. They should always fit to a | |
86c63190 | 1848 | // MemMap::Slot::key |
10a69fc0 CT |
1849 | assert(idlen <= MEMMAP_SLOT_KEY_SIZE); |
1850 | memset(key, 0, sizeof(key)); | |
1851 | memcpy(key, id, idlen); | |
1852 | int pos; | |
1853 | Ipc::MemMap::Slot *slotW = SslSessionCache->openForWriting((const cache_key*)key, pos); | |
1854 | if (slotW) { | |
1855 | int lenRequired = i2d_SSL_SESSION(session, NULL); | |
1856 | if (lenRequired < MEMMAP_SLOT_DATA_SIZE) { | |
1857 | unsigned char *p = (unsigned char *)slotW->p; | |
1858 | lenRequired = i2d_SSL_SESSION(session, &p); | |
1859 | slotW->set(key, NULL, lenRequired, squid_curtime + Config.SSL.session_ttl); | |
1860 | } | |
1861 | SslSessionCache->closeForWriting(pos); | |
1862 | debugs(83, 5, "wrote an ssl session entry of size " << lenRequired << " at pos " << pos); | |
1863 | } | |
1864 | return 0; | |
1865 | } | |
1866 | ||
1867 | static void | |
1868 | remove_session_cb(SSL_CTX *, SSL_SESSION *sessionID) | |
1869 | { | |
1870 | if (!SslSessionCache) | |
1871 | return ; | |
1872 | ||
1873 | debugs(83, 5, "Request to remove corrupted or not valid SSL Session "); | |
1874 | int pos; | |
1875 | Ipc::MemMap::Slot const *slot = SslSessionCache->openForReading((const cache_key*)sessionID, pos); | |
1876 | if (slot == NULL) | |
1877 | return; | |
1878 | SslSessionCache->closeForReading(pos); | |
1879 | // TODO: | |
1880 | // What if we are not able to remove the session? | |
1881 | // Maybe schedule a job to remove it later? | |
1882 | // For now we just have an invalid entry in cache until will be expired | |
1883 | // The openSSL will reject it when we try to use it | |
1884 | SslSessionCache->free(pos); | |
1885 | } | |
1886 | ||
1887 | static SSL_SESSION * | |
1888 | get_session_cb(SSL *, unsigned char *sessionID, int len, int *copy) | |
1889 | { | |
1890 | if (!SslSessionCache) | |
1891 | return NULL; | |
1892 | ||
1893 | SSL_SESSION *session = NULL; | |
1894 | const unsigned int *p; | |
1895 | p = (unsigned int *)sessionID; | |
1896 | debugs(83, 5, "Request to search for SSL Session of len:" << | |
1897 | len << p[0] << ":" << p[1]); | |
1898 | ||
1899 | int pos; | |
1900 | Ipc::MemMap::Slot const *slot = SslSessionCache->openForReading((const cache_key*)sessionID, pos); | |
1901 | if (slot != NULL) { | |
1902 | if (slot->expire > squid_curtime) { | |
1903 | const unsigned char *ptr = slot->p; | |
1904 | session = d2i_SSL_SESSION(NULL, &ptr, slot->pSize); | |
1905 | debugs(83, 5, "Session retrieved from cache at pos " << pos); | |
1906 | } else | |
1907 | debugs(83, 5, "Session in cache expired"); | |
1908 | SslSessionCache->closeForReading(pos); | |
1909 | } | |
1910 | ||
1911 | if (!session) | |
1912 | debugs(83, 5, "Failed to retrieved from cache\n"); | |
1913 | ||
1914 | // With the parameter copy the callback can require the SSL engine | |
1915 | // to increment the reference count of the SSL_SESSION object, Normally | |
1916 | // the reference count is not incremented and therefore the session must | |
1917 | // not be explicitly freed with SSL_SESSION_free(3). | |
1918 | *copy = 0; | |
1919 | return session; | |
1920 | } | |
1921 | ||
1922 | static void | |
1923 | setSessionCallbacks(SSL_CTX *ctx) | |
1924 | { | |
1925 | if (SslSessionCache) { | |
1926 | SSL_CTX_set_session_cache_mode(ctx, SSL_SESS_CACHE_SERVER|SSL_SESS_CACHE_NO_INTERNAL); | |
1927 | SSL_CTX_sess_set_new_cb(ctx, store_session_cb); | |
1928 | SSL_CTX_sess_set_remove_cb(ctx, remove_session_cb); | |
1929 | SSL_CTX_sess_set_get_cb(ctx, get_session_cb); | |
1930 | } | |
1931 | } | |
1932 | ||
1933 | static bool | |
1934 | isSslServer() | |
1935 | { | |
d00790b2 | 1936 | if (HttpsPortList != NULL) |
10a69fc0 CT |
1937 | return true; |
1938 | ||
fa720bfb | 1939 | for (AnyP::PortCfgPointer s = HttpPortList; s != NULL; s = s->next) { |
10a69fc0 CT |
1940 | if (s->flags.tunnelSslBumping) |
1941 | return true; | |
1942 | } | |
1943 | ||
1944 | return false; | |
1945 | } | |
1946 | ||
1947 | #define SSL_SESSION_ID_SIZE 32 | |
1948 | #define SSL_SESSION_MAX_SIZE 10*1024 | |
1949 | ||
1950 | void | |
1951 | Ssl::initialize_session_cache() | |
1952 | { | |
1953 | ||
1954 | if (!isSslServer()) //no need to configure ssl session cache. | |
1955 | return; | |
1956 | ||
86c63190 | 1957 | // Check if the MemMap keys and data are enough big to hold |
10a69fc0 CT |
1958 | // session ids and session data |
1959 | assert(SSL_SESSION_ID_SIZE >= MEMMAP_SLOT_KEY_SIZE); | |
1960 | assert(SSL_SESSION_MAX_SIZE >= MEMMAP_SLOT_DATA_SIZE); | |
1961 | ||
1962 | int configuredItems = ::Config.SSL.sessionCacheSize / sizeof(Ipc::MemMap::Slot); | |
1963 | if (IamWorkerProcess() && configuredItems) | |
1964 | SslSessionCache = new Ipc::MemMap(SslSessionCacheName); | |
1965 | else { | |
1966 | SslSessionCache = NULL; | |
1967 | return; | |
1968 | } | |
1969 | ||
fa720bfb | 1970 | for (AnyP::PortCfgPointer s = HttpsPortList; s != NULL; s = s->next) { |
10a69fc0 CT |
1971 | if (s->staticSslContext.get() != NULL) |
1972 | setSessionCallbacks(s->staticSslContext.get()); | |
1973 | } | |
1974 | ||
fa720bfb | 1975 | for (AnyP::PortCfgPointer s = HttpPortList; s != NULL; s = s->next) { |
10a69fc0 CT |
1976 | if (s->staticSslContext.get() != NULL) |
1977 | setSessionCallbacks(s->staticSslContext.get()); | |
1978 | } | |
1979 | } | |
1980 | ||
1981 | void | |
1982 | destruct_session_cache() | |
1983 | { | |
1984 | delete SslSessionCache; | |
1985 | } | |
1986 | ||
1987 | /// initializes shared memory segments used by MemStore | |
1988 | class SharedSessionCacheRr: public Ipc::Mem::RegisteredRunner | |
1989 | { | |
1990 | public: | |
1991 | /* RegisteredRunner API */ | |
1992 | SharedSessionCacheRr(): owner(NULL) {} | |
21b7990f | 1993 | virtual void useConfig(); |
10a69fc0 CT |
1994 | virtual ~SharedSessionCacheRr(); |
1995 | ||
1996 | protected: | |
21b7990f | 1997 | virtual void create(); |
10a69fc0 CT |
1998 | |
1999 | private: | |
2000 | Ipc::MemMap::Owner *owner; | |
2001 | }; | |
2002 | ||
21b7990f | 2003 | RunnerRegistrationEntry(SharedSessionCacheRr); |
10a69fc0 CT |
2004 | |
2005 | void | |
21b7990f | 2006 | SharedSessionCacheRr::useConfig() |
10a69fc0 | 2007 | { |
21b7990f | 2008 | Ipc::Mem::RegisteredRunner::useConfig(); |
10a69fc0 CT |
2009 | } |
2010 | ||
2011 | void | |
21b7990f | 2012 | SharedSessionCacheRr::create() |
10a69fc0 CT |
2013 | { |
2014 | if (!isSslServer()) //no need to configure ssl session cache. | |
2015 | return; | |
2016 | ||
2017 | int items; | |
2018 | items = Config.SSL.sessionCacheSize / sizeof(Ipc::MemMap::Slot); | |
2019 | if (items) | |
2020 | owner = Ipc::MemMap::Init(SslSessionCacheName, items); | |
2021 | } | |
2022 | ||
2023 | SharedSessionCacheRr::~SharedSessionCacheRr() | |
2024 | { | |
2025 | delete owner; | |
2026 | } | |
d620ae0e | 2027 | |
cb4f4424 | 2028 | #endif /* USE_OPENSSL */ |