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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" |
ed6e9fb9 | 20 | #include "fatal.h" |
b3a8ae1b | 21 | #include "fd.h" |
582c2af2 FC |
22 | #include "fde.h" |
23 | #include "globals.h" | |
86c63190 | 24 | #include "ipc/MemMap.h" |
4d5904f7 | 25 | #include "SquidConfig.h" |
10a69fc0 | 26 | #include "SquidTime.h" |
b3a8ae1b | 27 | #include "ssl/bio.h" |
2cef0ca6 | 28 | #include "ssl/Config.h" |
4d16918e | 29 | #include "ssl/ErrorDetail.h" |
95d2589c | 30 | #include "ssl/gadgets.h" |
602d9612 | 31 | #include "ssl/support.h" |
fc54b8d2 | 32 | #include "URL.h" |
f484cdf5 | 33 | |
1a30fdf5 | 34 | #include <cerrno> |
21d845b1 | 35 | |
10a69fc0 CT |
36 | static void setSessionCallbacks(SSL_CTX *ctx); |
37 | Ipc::MemMap *SslSessionCache = NULL; | |
38 | const char *SslSessionCacheName = "ssl_session_cache"; | |
39 | ||
3c26b00a CT |
40 | const EVP_MD *Ssl::DefaultSignHash = NULL; |
41 | ||
caf3666d AR |
42 | const char *Ssl::BumpModeStr[] = { |
43 | "none", | |
44 | "client-first", | |
45 | "server-first", | |
5d65362c CT |
46 | "peek", |
47 | "stare", | |
48 | "bump", | |
7f4e9b73 | 49 | "splice", |
5d65362c | 50 | "terminate", |
1110989a | 51 | /*"err",*/ |
caf3666d AR |
52 | NULL |
53 | }; | |
54 | ||
63be0a78 | 55 | /** |
56 | \defgroup ServerProtocolSSLInternal Server-Side SSL Internals | |
57 | \ingroup ServerProtocolSSLAPI | |
58 | */ | |
59 | ||
60 | /// \ingroup ServerProtocolSSLInternal | |
307b83b7 | 61 | static int |
62 | ssl_ask_password_cb(char *buf, int size, int rwflag, void *userdata) | |
63 | { | |
64 | FILE *in; | |
65 | int len = 0; | |
66 | char cmdline[1024]; | |
67 | ||
68 | snprintf(cmdline, sizeof(cmdline), "\"%s\" \"%s\"", Config.Program.ssl_password, (const char *)userdata); | |
69 | in = popen(cmdline, "r"); | |
70 | ||
71 | if (fgets(buf, size, in)) | |
72 | ||
73 | len = strlen(buf); | |
74 | ||
75 | while (len > 0 && (buf[len - 1] == '\n' || buf[len - 1] == '\r')) | |
5e263176 | 76 | --len; |
307b83b7 | 77 | |
78 | buf[len] = '\0'; | |
79 | ||
80 | pclose(in); | |
81 | ||
82 | return len; | |
83 | } | |
84 | ||
63be0a78 | 85 | /// \ingroup ServerProtocolSSLInternal |
307b83b7 | 86 | static void |
87 | ssl_ask_password(SSL_CTX * context, const char * prompt) | |
88 | { | |
89 | if (Config.Program.ssl_password) { | |
90 | SSL_CTX_set_default_passwd_cb(context, ssl_ask_password_cb); | |
91 | SSL_CTX_set_default_passwd_cb_userdata(context, (void *)prompt); | |
92 | } | |
93 | } | |
94 | ||
63be0a78 | 95 | /// \ingroup ServerProtocolSSLInternal |
f484cdf5 | 96 | static RSA * |
e6ccf245 | 97 | ssl_temp_rsa_cb(SSL * ssl, int anInt, int keylen) |
f484cdf5 | 98 | { |
e01f02ed | 99 | static RSA *rsa_512 = NULL; |
100 | static RSA *rsa_1024 = NULL; | |
101 | RSA *rsa = NULL; | |
102 | int newkey = 0; | |
f484cdf5 | 103 | |
e01f02ed | 104 | switch (keylen) { |
105 | ||
106 | case 512: | |
107 | ||
108 | if (!rsa_512) { | |
109 | rsa_512 = RSA_generate_key(512, RSA_F4, NULL, NULL); | |
110 | newkey = 1; | |
111 | } | |
112 | ||
113 | rsa = rsa_512; | |
114 | break; | |
115 | ||
116 | case 1024: | |
117 | ||
118 | if (!rsa_1024) { | |
119 | rsa_1024 = RSA_generate_key(1024, RSA_F4, NULL, NULL); | |
120 | newkey = 1; | |
121 | } | |
122 | ||
123 | rsa = rsa_1024; | |
124 | break; | |
125 | ||
126 | default: | |
e0236918 | 127 | debugs(83, DBG_IMPORTANT, "ssl_temp_rsa_cb: Unexpected key length " << keylen); |
e01f02ed | 128 | return NULL; |
129 | } | |
130 | ||
131 | if (rsa == NULL) { | |
e0236918 | 132 | debugs(83, DBG_IMPORTANT, "ssl_temp_rsa_cb: Failed to generate key " << keylen); |
e01f02ed | 133 | return NULL; |
134 | } | |
135 | ||
136 | if (newkey) { | |
137 | if (do_debug(83, 5)) | |
138 | PEM_write_RSAPrivateKey(debug_log, rsa, NULL, NULL, 0, NULL, NULL); | |
139 | ||
e0236918 | 140 | debugs(83, DBG_IMPORTANT, "Generated ephemeral RSA key of length " << keylen); |
e01f02ed | 141 | } |
62e76326 | 142 | |
f484cdf5 | 143 | return rsa; |
144 | } | |
145 | ||
4d16918e CT |
146 | int Ssl::asn1timeToString(ASN1_TIME *tm, char *buf, int len) |
147 | { | |
148 | BIO *bio; | |
149 | int write = 0; | |
150 | bio = BIO_new(BIO_s_mem()); | |
151 | if (bio) { | |
e34763f4 A |
152 | if (ASN1_TIME_print(bio, tm)) |
153 | write = BIO_read(bio, buf, len-1); | |
154 | BIO_free(bio); | |
4d16918e CT |
155 | } |
156 | buf[write]='\0'; | |
157 | return write; | |
158 | } | |
159 | ||
160 | int Ssl::matchX509CommonNames(X509 *peer_cert, void *check_data, int (*check_func)(void *check_data, ASN1_STRING *cn_data)) | |
161 | { | |
162 | assert(peer_cert); | |
163 | ||
164 | X509_NAME *name = X509_get_subject_name(peer_cert); | |
165 | ||
166 | 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 | 167 | |
4d16918e CT |
168 | ASN1_STRING *cn_data = X509_NAME_ENTRY_get_data(X509_NAME_get_entry(name, i)); |
169 | ||
170 | if ( (*check_func)(check_data, cn_data) == 0) | |
171 | return 1; | |
172 | } | |
173 | ||
174 | STACK_OF(GENERAL_NAME) * altnames; | |
175 | altnames = (STACK_OF(GENERAL_NAME)*)X509_get_ext_d2i(peer_cert, NID_subject_alt_name, NULL, NULL); | |
176 | ||
177 | if (altnames) { | |
178 | int numalts = sk_GENERAL_NAME_num(altnames); | |
d7ae3534 | 179 | for (int i = 0; i < numalts; ++i) { |
4d16918e CT |
180 | const GENERAL_NAME *check = sk_GENERAL_NAME_value(altnames, i); |
181 | if (check->type != GEN_DNS) { | |
182 | continue; | |
183 | } | |
184 | ASN1_STRING *cn_data = check->d.dNSName; | |
e34763f4 | 185 | |
40dd2b59 CT |
186 | if ( (*check_func)(check_data, cn_data) == 0) { |
187 | sk_GENERAL_NAME_pop_free(altnames, GENERAL_NAME_free); | |
4d16918e | 188 | return 1; |
40dd2b59 | 189 | } |
4d16918e CT |
190 | } |
191 | sk_GENERAL_NAME_pop_free(altnames, GENERAL_NAME_free); | |
192 | } | |
193 | return 0; | |
194 | } | |
195 | ||
196 | static int check_domain( void *check_data, ASN1_STRING *cn_data) | |
197 | { | |
198 | char cn[1024]; | |
199 | const char *server = (const char *)check_data; | |
200 | ||
e34763f4 | 201 | if (cn_data->length > (int)sizeof(cn) - 1) { |
4d16918e CT |
202 | return 1; //if does not fit our buffer just ignore |
203 | } | |
204 | memcpy(cn, cn_data->data, cn_data->length); | |
205 | cn[cn_data->length] = '\0'; | |
206 | debugs(83, 4, "Verifying server domain " << server << " to certificate name/subjectAltName " << cn); | |
207 | return matchDomainName(server, cn[0] == '*' ? cn + 1 : cn); | |
208 | } | |
209 | ||
8eb0a7ee CT |
210 | bool Ssl::checkX509ServerValidity(X509 *cert, const char *server) |
211 | { | |
212 | return matchX509CommonNames(cert, (void *)server, check_domain); | |
213 | } | |
214 | ||
63be0a78 | 215 | /// \ingroup ServerProtocolSSLInternal |
f484cdf5 | 216 | static int |
217 | ssl_verify_cb(int ok, X509_STORE_CTX * ctx) | |
218 | { | |
7698a79c CT |
219 | // preserve original ctx->error before SSL_ calls can overwrite it |
220 | Ssl::ssl_error_t error_no = ok ? SSL_ERROR_NONE : ctx->error; | |
221 | ||
222 | char buffer[256] = ""; | |
a7ad6e4e | 223 | SSL *ssl = (SSL *)X509_STORE_CTX_get_ex_data(ctx, SSL_get_ex_data_X509_STORE_CTX_idx()); |
224 | SSL_CTX *sslctx = SSL_get_SSL_CTX(ssl); | |
225 | const char *server = (const char *)SSL_get_ex_data(ssl, ssl_ex_index_server); | |
226 | void *dont_verify_domain = SSL_CTX_get_ex_data(sslctx, ssl_ctx_ex_index_dont_verify_domain); | |
815eaa44 | 227 | ACLChecklist *check = (ACLChecklist*)SSL_get_ex_data(ssl, ssl_ex_index_cert_error_check); |
e7bcc25f | 228 | X509 *peeked_cert = (X509 *)SSL_get_ex_data(ssl, ssl_ex_index_ssl_peeked_cert); |
a7ad6e4e | 229 | X509 *peer_cert = ctx->cert; |
f484cdf5 | 230 | |
a7ad6e4e | 231 | X509_NAME_oneline(X509_get_subject_name(peer_cert), buffer, |
62e76326 | 232 | sizeof(buffer)); |
a7ad6e4e | 233 | |
0ad3ff51 CT |
234 | // detect infinite loops |
235 | uint32_t *validationCounter = static_cast<uint32_t *>(SSL_get_ex_data(ssl, ssl_ex_index_ssl_validation_counter)); | |
236 | if (!validationCounter) { | |
237 | validationCounter = new uint32_t(1); | |
238 | SSL_set_ex_data(ssl, ssl_ex_index_ssl_validation_counter, validationCounter); | |
239 | } else { | |
240 | // overflows allowed if SQUID_CERT_VALIDATION_ITERATION_MAX >= UINT32_MAX | |
241 | (*validationCounter)++; | |
242 | } | |
243 | ||
244 | if ((*validationCounter) >= SQUID_CERT_VALIDATION_ITERATION_MAX) { | |
245 | ok = 0; // or the validation loop will never stop | |
246 | error_no = SQUID_X509_V_ERR_INFINITE_VALIDATION; | |
247 | debugs(83, 2, "SQUID_X509_V_ERR_INFINITE_VALIDATION: " << | |
248 | *validationCounter << " iterations while checking " << buffer); | |
249 | } | |
250 | ||
a7ad6e4e | 251 | if (ok) { |
bf8fe701 | 252 | debugs(83, 5, "SSL Certificate signature OK: " << buffer); |
62e76326 | 253 | |
4747ea4c | 254 | // Check for domain mismatch only if the current certificate is the peer certificate. |
2e52fa2b | 255 | if (!dont_verify_domain && server && peer_cert == X509_STORE_CTX_get_current_cert(ctx)) { |
8eb0a7ee | 256 | if (!Ssl::checkX509ServerValidity(peer_cert, server)) { |
815eaa44 | 257 | debugs(83, 2, "SQUID_X509_V_ERR_DOMAIN_MISMATCH: Certificate " << buffer << " does not match domainname " << server); |
62e76326 | 258 | ok = 0; |
4d16918e | 259 | error_no = SQUID_X509_V_ERR_DOMAIN_MISMATCH; |
62e76326 | 260 | } |
261 | } | |
7698a79c | 262 | } |
0db46e4f | 263 | |
e7bcc25f | 264 | if (ok && peeked_cert) { |
7a957a93 | 265 | // Check whether the already peeked certificate matches the new one. |
e7bcc25f CT |
266 | if (X509_cmp(peer_cert, peeked_cert) != 0) { |
267 | debugs(83, 2, "SQUID_X509_V_ERR_CERT_CHANGE: Certificate " << buffer << " does not match peeked certificate"); | |
268 | ok = 0; | |
269 | error_no = SQUID_X509_V_ERR_CERT_CHANGE; | |
270 | } | |
271 | } | |
272 | ||
7698a79c | 273 | if (!ok) { |
62a7607e CT |
274 | X509 *broken_cert = X509_STORE_CTX_get_current_cert(ctx); |
275 | if (!broken_cert) | |
276 | broken_cert = peer_cert; | |
277 | ||
278 | Ssl::CertErrors *errs = static_cast<Ssl::CertErrors *>(SSL_get_ex_data(ssl, ssl_ex_index_ssl_errors)); | |
7a957a93 | 279 | if (!errs) { |
62a7607e | 280 | errs = new Ssl::CertErrors(Ssl::CertError(error_no, broken_cert)); |
7a957a93 | 281 | if (!SSL_set_ex_data(ssl, ssl_ex_index_ssl_errors, (void *)errs)) { |
fb2178bb | 282 | debugs(83, 2, "Failed to set ssl error_no in ssl_verify_cb: Certificate " << buffer); |
7a957a93 AR |
283 | delete errs; |
284 | errs = NULL; | |
fb2178bb | 285 | } |
87f237a9 | 286 | } else // remember another error number |
62a7607e | 287 | errs->push_back_unique(Ssl::CertError(error_no, broken_cert)); |
fb2178bb | 288 | |
7698a79c | 289 | if (const char *err_descr = Ssl::GetErrorDescr(error_no)) |
cf09bec7 CT |
290 | debugs(83, 5, err_descr << ": " << buffer); |
291 | else | |
7698a79c CT |
292 | debugs(83, DBG_IMPORTANT, "SSL unknown certificate error " << error_no << " in " << buffer); |
293 | ||
0ad3ff51 CT |
294 | // Check if the certificate error can be bypassed. |
295 | // Infinity validation loop errors can not bypassed. | |
296 | if (error_no != SQUID_X509_V_ERR_INFINITE_VALIDATION) { | |
297 | if (check) { | |
298 | ACLFilledChecklist *filledCheck = Filled(check); | |
299 | assert(!filledCheck->sslErrors); | |
300 | filledCheck->sslErrors = new Ssl::CertErrors(Ssl::CertError(error_no, broken_cert)); | |
301 | filledCheck->serverCert.resetAndLock(peer_cert); | |
302 | if (check->fastCheck() == ACCESS_ALLOWED) { | |
303 | debugs(83, 3, "bypassing SSL error " << error_no << " in " << buffer); | |
304 | ok = 1; | |
305 | } else { | |
306 | debugs(83, 5, "confirming SSL error " << error_no); | |
307 | } | |
308 | delete filledCheck->sslErrors; | |
309 | filledCheck->sslErrors = NULL; | |
310 | filledCheck->serverCert.reset(NULL); | |
7698a79c | 311 | } |
0ad3ff51 CT |
312 | // If the certificate validator is used then we need to allow all errors and |
313 | // pass them to certficate validator for more processing | |
314 | else if (Ssl::TheConfig.ssl_crt_validator) { | |
7698a79c | 315 | ok = 1; |
0ad3ff51 CT |
316 | // Check if we have stored certificates chain. Store if not. |
317 | if (!SSL_get_ex_data(ssl, ssl_ex_index_ssl_cert_chain)) { | |
318 | STACK_OF(X509) *certStack = X509_STORE_CTX_get1_chain(ctx); | |
319 | if (certStack && !SSL_set_ex_data(ssl, ssl_ex_index_ssl_cert_chain, certStack)) | |
320 | sk_X509_pop_free(certStack, X509_free); | |
321 | } | |
7698a79c | 322 | } |
815eaa44 | 323 | } |
a7ad6e4e | 324 | } |
62e76326 | 325 | |
7698a79c | 326 | if (!ok && !SSL_get_ex_data(ssl, ssl_ex_index_ssl_error_detail) ) { |
f622c461 MF |
327 | |
328 | // Find the broken certificate. It may be intermediate. | |
329 | X509 *broken_cert = peer_cert; // reasonable default if search fails | |
330 | // Our SQUID_X509_V_ERR_DOMAIN_MISMATCH implies peer_cert is at fault. | |
331 | if (error_no != SQUID_X509_V_ERR_DOMAIN_MISMATCH) { | |
332 | if (X509 *last_used_cert = X509_STORE_CTX_get_current_cert(ctx)) | |
333 | broken_cert = last_used_cert; | |
334 | } | |
335 | ||
336 | Ssl::ErrorDetail *errDetail = | |
de878a55 | 337 | new Ssl::ErrorDetail(error_no, peer_cert, broken_cert); |
f622c461 | 338 | |
e34763f4 | 339 | if (!SSL_set_ex_data(ssl, ssl_ex_index_ssl_error_detail, errDetail)) { |
4d16918e CT |
340 | debugs(83, 2, "Failed to set Ssl::ErrorDetail in ssl_verify_cb: Certificate " << buffer); |
341 | delete errDetail; | |
342 | } | |
343 | } | |
344 | ||
f484cdf5 | 345 | return ok; |
346 | } | |
347 | ||
63be0a78 | 348 | /// \ingroup ServerProtocolSSLInternal |
26ac0430 | 349 | static struct ssl_option { |
79d4ccdf | 350 | const char *name; |
351 | long value; | |
62e76326 | 352 | } |
353 | ||
354 | ssl_options[] = { | |
79d4ccdf | 355 | |
32d002cb | 356 | #if SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG |
26ac0430 AJ |
357 | { |
358 | "NETSCAPE_REUSE_CIPHER_CHANGE_BUG", SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG | |
359 | }, | |
673cd7db | 360 | #endif |
32d002cb | 361 | #if SSL_OP_SSLREF2_REUSE_CERT_TYPE_BUG |
26ac0430 AJ |
362 | { |
363 | "SSLREF2_REUSE_CERT_TYPE_BUG", SSL_OP_SSLREF2_REUSE_CERT_TYPE_BUG | |
364 | }, | |
673cd7db | 365 | #endif |
32d002cb | 366 | #if SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER |
26ac0430 AJ |
367 | { |
368 | "MICROSOFT_BIG_SSLV3_BUFFER", SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER | |
369 | }, | |
673cd7db | 370 | #endif |
32d002cb | 371 | #if SSL_OP_SSLEAY_080_CLIENT_DH_BUG |
26ac0430 AJ |
372 | { |
373 | "SSLEAY_080_CLIENT_DH_BUG", SSL_OP_SSLEAY_080_CLIENT_DH_BUG | |
374 | }, | |
673cd7db | 375 | #endif |
32d002cb | 376 | #if SSL_OP_TLS_D5_BUG |
26ac0430 AJ |
377 | { |
378 | "TLS_D5_BUG", SSL_OP_TLS_D5_BUG | |
379 | }, | |
673cd7db | 380 | #endif |
32d002cb | 381 | #if SSL_OP_TLS_BLOCK_PADDING_BUG |
26ac0430 AJ |
382 | { |
383 | "TLS_BLOCK_PADDING_BUG", SSL_OP_TLS_BLOCK_PADDING_BUG | |
384 | }, | |
673cd7db | 385 | #endif |
32d002cb | 386 | #if SSL_OP_TLS_ROLLBACK_BUG |
26ac0430 AJ |
387 | { |
388 | "TLS_ROLLBACK_BUG", SSL_OP_TLS_ROLLBACK_BUG | |
389 | }, | |
673cd7db | 390 | #endif |
32d002cb | 391 | #if SSL_OP_ALL |
26ac0430 | 392 | { |
866eafc6 | 393 | "ALL", (long)SSL_OP_ALL |
26ac0430 | 394 | }, |
673cd7db | 395 | #endif |
32d002cb | 396 | #if SSL_OP_SINGLE_DH_USE |
26ac0430 AJ |
397 | { |
398 | "SINGLE_DH_USE", SSL_OP_SINGLE_DH_USE | |
399 | }, | |
673cd7db | 400 | #endif |
32d002cb | 401 | #if SSL_OP_EPHEMERAL_RSA |
26ac0430 AJ |
402 | { |
403 | "EPHEMERAL_RSA", SSL_OP_EPHEMERAL_RSA | |
404 | }, | |
673cd7db | 405 | #endif |
32d002cb | 406 | #if SSL_OP_PKCS1_CHECK_1 |
26ac0430 AJ |
407 | { |
408 | "PKCS1_CHECK_1", SSL_OP_PKCS1_CHECK_1 | |
409 | }, | |
673cd7db | 410 | #endif |
32d002cb | 411 | #if SSL_OP_PKCS1_CHECK_2 |
26ac0430 AJ |
412 | { |
413 | "PKCS1_CHECK_2", SSL_OP_PKCS1_CHECK_2 | |
414 | }, | |
673cd7db | 415 | #endif |
32d002cb | 416 | #if SSL_OP_NETSCAPE_CA_DN_BUG |
26ac0430 AJ |
417 | { |
418 | "NETSCAPE_CA_DN_BUG", SSL_OP_NETSCAPE_CA_DN_BUG | |
419 | }, | |
673cd7db | 420 | #endif |
32d002cb | 421 | #if SSL_OP_NON_EXPORT_FIRST |
26ac0430 AJ |
422 | { |
423 | "NON_EXPORT_FIRST", SSL_OP_NON_EXPORT_FIRST | |
424 | }, | |
673cd7db | 425 | #endif |
32d002cb | 426 | #if SSL_OP_CIPHER_SERVER_PREFERENCE |
26ac0430 AJ |
427 | { |
428 | "CIPHER_SERVER_PREFERENCE", SSL_OP_CIPHER_SERVER_PREFERENCE | |
429 | }, | |
673cd7db | 430 | #endif |
32d002cb | 431 | #if SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG |
26ac0430 AJ |
432 | { |
433 | "NETSCAPE_DEMO_CIPHER_CHANGE_BUG", SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG | |
434 | }, | |
673cd7db | 435 | #endif |
32d002cb | 436 | #if SSL_OP_NO_SSLv3 |
26ac0430 AJ |
437 | { |
438 | "NO_SSLv3", SSL_OP_NO_SSLv3 | |
439 | }, | |
673cd7db | 440 | #endif |
32d002cb | 441 | #if SSL_OP_NO_TLSv1 |
26ac0430 AJ |
442 | { |
443 | "NO_TLSv1", SSL_OP_NO_TLSv1 | |
444 | }, | |
3d96b0e8 AJ |
445 | #endif |
446 | #if SSL_OP_NO_TLSv1_1 | |
447 | { | |
448 | "NO_TLSv1_1", SSL_OP_NO_TLSv1_1 | |
449 | }, | |
450 | #endif | |
451 | #if SSL_OP_NO_TLSv1_2 | |
452 | { | |
453 | "NO_TLSv1_2", SSL_OP_NO_TLSv1_2 | |
454 | }, | |
71606c88 SW |
455 | #endif |
456 | #if SSL_OP_NO_COMPRESSION | |
457 | { | |
458 | "No_Compression", SSL_OP_NO_COMPRESSION | |
459 | }, | |
673cd7db | 460 | #endif |
26ac0430 AJ |
461 | { |
462 | "", 0 | |
463 | }, | |
464 | { | |
465 | NULL, 0 | |
466 | } | |
467 | }; | |
79d4ccdf | 468 | |
63be0a78 | 469 | /// \ingroup ServerProtocolSSLInternal |
86660d64 CT |
470 | long |
471 | Ssl::parse_options(const char *options) | |
79d4ccdf | 472 | { |
943c5f16 | 473 | long op = 0; |
79d4ccdf | 474 | char *tmp; |
475 | char *option; | |
476 | ||
477 | if (!options) | |
62e76326 | 478 | goto no_options; |
79d4ccdf | 479 | |
480 | tmp = xstrdup(options); | |
62e76326 | 481 | |
79d4ccdf | 482 | option = strtok(tmp, ":,"); |
62e76326 | 483 | |
79d4ccdf | 484 | while (option) { |
62e76326 | 485 | |
486 | struct ssl_option *opt = NULL, *opttmp; | |
487 | long value = 0; | |
488 | enum { | |
489 | MODE_ADD, MODE_REMOVE | |
490 | } mode; | |
491 | ||
492 | switch (*option) { | |
493 | ||
494 | case '!': | |
495 | ||
496 | case '-': | |
497 | mode = MODE_REMOVE; | |
d7ae3534 | 498 | ++option; |
62e76326 | 499 | break; |
500 | ||
501 | case '+': | |
502 | mode = MODE_ADD; | |
d7ae3534 | 503 | ++option; |
62e76326 | 504 | break; |
505 | ||
506 | default: | |
507 | mode = MODE_ADD; | |
508 | break; | |
509 | } | |
510 | ||
d7ae3534 | 511 | for (opttmp = ssl_options; opttmp->name; ++opttmp) { |
62e76326 | 512 | if (strcmp(opttmp->name, option) == 0) { |
513 | opt = opttmp; | |
514 | break; | |
515 | } | |
516 | } | |
517 | ||
518 | if (opt) | |
519 | value = opt->value; | |
520 | else if (strncmp(option, "0x", 2) == 0) { | |
521 | /* Special case.. hex specification */ | |
522 | value = strtol(option + 2, NULL, 16); | |
523 | } else { | |
524 | fatalf("Unknown SSL option '%s'", option); | |
f53969cc | 525 | value = 0; /* Keep GCC happy */ |
62e76326 | 526 | } |
527 | ||
528 | switch (mode) { | |
529 | ||
530 | case MODE_ADD: | |
531 | op |= value; | |
532 | break; | |
533 | ||
534 | case MODE_REMOVE: | |
535 | op &= ~value; | |
536 | break; | |
537 | } | |
538 | ||
539 | option = strtok(NULL, ":,"); | |
79d4ccdf | 540 | } |
541 | ||
542 | safe_free(tmp); | |
62e76326 | 543 | |
544 | no_options: | |
47901e84 AJ |
545 | #if SSL_OP_NO_SSLv2 |
546 | // compliance with RFC 6176: Prohibiting Secure Sockets Layer (SSL) Version 2.0 | |
547 | op = op | SSL_OP_NO_SSLv2; | |
548 | #endif | |
79d4ccdf | 549 | return op; |
550 | } | |
551 | ||
63be0a78 | 552 | /// \ingroup ServerProtocolSSLInternal |
f53969cc | 553 | #define SSL_FLAG_NO_DEFAULT_CA (1<<0) |
63be0a78 | 554 | /// \ingroup ServerProtocolSSLInternal |
f53969cc | 555 | #define SSL_FLAG_DELAYED_AUTH (1<<1) |
63be0a78 | 556 | /// \ingroup ServerProtocolSSLInternal |
f53969cc | 557 | #define SSL_FLAG_DONT_VERIFY_PEER (1<<2) |
63be0a78 | 558 | /// \ingroup ServerProtocolSSLInternal |
f53969cc | 559 | #define SSL_FLAG_DONT_VERIFY_DOMAIN (1<<3) |
63be0a78 | 560 | /// \ingroup ServerProtocolSSLInternal |
f53969cc | 561 | #define SSL_FLAG_NO_SESSION_REUSE (1<<4) |
63be0a78 | 562 | /// \ingroup ServerProtocolSSLInternal |
f53969cc | 563 | #define SSL_FLAG_VERIFY_CRL (1<<5) |
63be0a78 | 564 | /// \ingroup ServerProtocolSSLInternal |
f53969cc | 565 | #define SSL_FLAG_VERIFY_CRL_ALL (1<<6) |
a7ad6e4e | 566 | |
63be0a78 | 567 | /// \ingroup ServerProtocolSSLInternal |
86660d64 CT |
568 | long |
569 | Ssl::parse_flags(const char *flags) | |
a7ad6e4e | 570 | { |
571 | long fl = 0; | |
572 | char *tmp; | |
573 | char *flag; | |
574 | ||
575 | if (!flags) | |
62e76326 | 576 | return 0; |
a7ad6e4e | 577 | |
578 | tmp = xstrdup(flags); | |
62e76326 | 579 | |
a7ad6e4e | 580 | flag = strtok(tmp, ":,"); |
62e76326 | 581 | |
a7ad6e4e | 582 | while (flag) { |
62e76326 | 583 | if (strcmp(flag, "NO_DEFAULT_CA") == 0) |
584 | fl |= SSL_FLAG_NO_DEFAULT_CA; | |
585 | else if (strcmp(flag, "DELAYED_AUTH") == 0) | |
586 | fl |= SSL_FLAG_DELAYED_AUTH; | |
587 | else if (strcmp(flag, "DONT_VERIFY_PEER") == 0) | |
588 | fl |= SSL_FLAG_DONT_VERIFY_PEER; | |
589 | else if (strcmp(flag, "DONT_VERIFY_DOMAIN") == 0) | |
590 | fl |= SSL_FLAG_DONT_VERIFY_DOMAIN; | |
b13877cc | 591 | else if (strcmp(flag, "NO_SESSION_REUSE") == 0) |
592 | fl |= SSL_FLAG_NO_SESSION_REUSE; | |
a82a4fe4 | 593 | |
32d002cb | 594 | #if X509_V_FLAG_CRL_CHECK |
a82a4fe4 | 595 | |
596 | else if (strcmp(flag, "VERIFY_CRL") == 0) | |
597 | fl |= SSL_FLAG_VERIFY_CRL; | |
598 | else if (strcmp(flag, "VERIFY_CRL_ALL") == 0) | |
599 | fl |= SSL_FLAG_VERIFY_CRL_ALL; | |
600 | ||
601 | #endif | |
602 | ||
62e76326 | 603 | else |
604 | fatalf("Unknown ssl flag '%s'", flag); | |
605 | ||
606 | flag = strtok(NULL, ":,"); | |
a7ad6e4e | 607 | } |
62e76326 | 608 | |
a7ad6e4e | 609 | safe_free(tmp); |
610 | return fl; | |
611 | } | |
612 | ||
815eaa44 | 613 | // "dup" function for SSL_get_ex_new_index("cert_err_check") |
614 | static int | |
615 | ssl_dupAclChecklist(CRYPTO_EX_DATA *, CRYPTO_EX_DATA *, void *, | |
26ac0430 AJ |
616 | int, long, void *) |
617 | { | |
815eaa44 | 618 | // We do not support duplication of ACLCheckLists. |
619 | // If duplication is needed, we can count copies with cbdata. | |
620 | assert(false); | |
621 | return 0; | |
622 | } | |
623 | ||
624 | // "free" function for SSL_get_ex_new_index("cert_err_check") | |
625 | static void | |
626 | ssl_freeAclChecklist(void *, void *ptr, CRYPTO_EX_DATA *, | |
26ac0430 AJ |
627 | int, long, void *) |
628 | { | |
815eaa44 | 629 | delete static_cast<ACLChecklist *>(ptr); // may be NULL |
630 | } | |
a7ad6e4e | 631 | |
4d16918e CT |
632 | // "free" function for SSL_get_ex_new_index("ssl_error_detail") |
633 | static void | |
634 | ssl_free_ErrorDetail(void *, void *ptr, CRYPTO_EX_DATA *, | |
635 | int, long, void *) | |
636 | { | |
637 | Ssl::ErrorDetail *errDetail = static_cast <Ssl::ErrorDetail *>(ptr); | |
638 | delete errDetail; | |
639 | } | |
640 | ||
fb2178bb | 641 | static void |
7a957a93 | 642 | ssl_free_SslErrors(void *, void *ptr, CRYPTO_EX_DATA *, |
87f237a9 | 643 | int, long, void *) |
fb2178bb | 644 | { |
62a7607e | 645 | Ssl::CertErrors *errs = static_cast <Ssl::CertErrors*>(ptr); |
7a957a93 | 646 | delete errs; |
fb2178bb CT |
647 | } |
648 | ||
0ad3ff51 CT |
649 | // "free" function for SSL_get_ex_new_index("ssl_ex_index_ssl_validation_counter") |
650 | static void | |
651 | ssl_free_int(void *, void *ptr, CRYPTO_EX_DATA *, | |
3cc296c4 | 652 | int, long, void *) |
0ad3ff51 CT |
653 | { |
654 | uint32_t *counter = static_cast <uint32_t *>(ptr); | |
655 | delete counter; | |
656 | } | |
657 | ||
4747ea4c CT |
658 | /// \ingroup ServerProtocolSSLInternal |
659 | /// Callback handler function to release STACK_OF(X509) "ex" data stored | |
660 | /// in an SSL object. | |
661 | static void | |
662 | ssl_free_CertChain(void *, void *ptr, CRYPTO_EX_DATA *, | |
663 | int, long, void *) | |
664 | { | |
665 | STACK_OF(X509) *certsChain = static_cast <STACK_OF(X509) *>(ptr); | |
666 | sk_X509_pop_free(certsChain,X509_free); | |
667 | } | |
668 | ||
e7bcc25f CT |
669 | // "free" function for X509 certificates |
670 | static void | |
671 | ssl_free_X509(void *, void *ptr, CRYPTO_EX_DATA *, | |
87f237a9 | 672 | int, long, void *) |
e7bcc25f CT |
673 | { |
674 | X509 *cert = static_cast <X509 *>(ptr); | |
675 | X509_free(cert); | |
676 | } | |
677 | ||
63be0a78 | 678 | /// \ingroup ServerProtocolSSLInternal |
a7ad6e4e | 679 | static void |
680 | ssl_initialize(void) | |
f484cdf5 | 681 | { |
56a35ad1 AR |
682 | static bool initialized = false; |
683 | if (initialized) | |
684 | return; | |
685 | initialized = true; | |
62e76326 | 686 | |
56a35ad1 AR |
687 | SSL_load_error_strings(); |
688 | SSLeay_add_ssl_algorithms(); | |
62e76326 | 689 | |
56a35ad1 AR |
690 | #if HAVE_OPENSSL_ENGINE_H |
691 | if (Config.SSL.ssl_engine) { | |
692 | ENGINE *e; | |
693 | if (!(e = ENGINE_by_id(Config.SSL.ssl_engine))) | |
694 | fatalf("Unable to find SSL engine '%s'\n", Config.SSL.ssl_engine); | |
695 | ||
696 | if (!ENGINE_set_default(e, ENGINE_METHOD_ALL)) { | |
697 | int ssl_error = ERR_get_error(); | |
698 | fatalf("Failed to initialise SSL engine: %s\n", ERR_error_string(ssl_error, NULL)); | |
62e76326 | 699 | } |
56a35ad1 | 700 | } |
a7ad6e4e | 701 | #else |
56a35ad1 AR |
702 | if (Config.SSL.ssl_engine) |
703 | fatalf("Your OpenSSL has no SSL engine support\n"); | |
a7ad6e4e | 704 | #endif |
62e76326 | 705 | |
3c26b00a CT |
706 | const char *defName = Config.SSL.certSignHash ? Config.SSL.certSignHash : SQUID_SSL_SIGN_HASH_IF_NONE; |
707 | Ssl::DefaultSignHash = EVP_get_digestbyname(defName); | |
708 | if (!Ssl::DefaultSignHash) | |
709 | fatalf("Sign hash '%s' is not supported\n", defName); | |
710 | ||
a7ad6e4e | 711 | ssl_ex_index_server = SSL_get_ex_new_index(0, (void *) "server", NULL, NULL, NULL); |
712 | ssl_ctx_ex_index_dont_verify_domain = SSL_CTX_get_ex_new_index(0, (void *) "dont_verify_domain", NULL, NULL, NULL); | |
815eaa44 | 713 | ssl_ex_index_cert_error_check = SSL_get_ex_new_index(0, (void *) "cert_error_check", NULL, &ssl_dupAclChecklist, &ssl_freeAclChecklist); |
4d16918e | 714 | ssl_ex_index_ssl_error_detail = SSL_get_ex_new_index(0, (void *) "ssl_error_detail", NULL, NULL, &ssl_free_ErrorDetail); |
e7bcc25f | 715 | ssl_ex_index_ssl_peeked_cert = SSL_get_ex_new_index(0, (void *) "ssl_peeked_cert", NULL, NULL, &ssl_free_X509); |
7a957a93 | 716 | ssl_ex_index_ssl_errors = SSL_get_ex_new_index(0, (void *) "ssl_errors", NULL, NULL, &ssl_free_SslErrors); |
4747ea4c | 717 | ssl_ex_index_ssl_cert_chain = SSL_get_ex_new_index(0, (void *) "ssl_cert_chain", NULL, NULL, &ssl_free_CertChain); |
0ad3ff51 | 718 | ssl_ex_index_ssl_validation_counter = SSL_get_ex_new_index(0, (void *) "ssl_validation_counter", NULL, NULL, &ssl_free_int); |
a7ad6e4e | 719 | } |
720 | ||
63be0a78 | 721 | /// \ingroup ServerProtocolSSLInternal |
a82a4fe4 | 722 | static int |
723 | ssl_load_crl(SSL_CTX *sslContext, const char *CRLfile) | |
724 | { | |
725 | X509_STORE *st = SSL_CTX_get_cert_store(sslContext); | |
726 | X509_CRL *crl; | |
727 | BIO *in = BIO_new_file(CRLfile, "r"); | |
728 | int count = 0; | |
729 | ||
730 | if (!in) { | |
bf8fe701 | 731 | debugs(83, 2, "WARNING: Failed to open CRL file '" << CRLfile << "'"); |
a82a4fe4 | 732 | return 0; |
733 | } | |
734 | ||
735 | while ((crl = PEM_read_bio_X509_CRL(in,NULL,NULL,NULL))) { | |
736 | if (!X509_STORE_add_crl(st, crl)) | |
bf8fe701 | 737 | debugs(83, 2, "WARNING: Failed to add CRL from file '" << CRLfile << "'"); |
a82a4fe4 | 738 | else |
d7ae3534 | 739 | ++count; |
a82a4fe4 | 740 | |
741 | X509_CRL_free(crl); | |
742 | } | |
743 | ||
744 | BIO_free(in); | |
745 | return count; | |
746 | } | |
747 | ||
86660d64 CT |
748 | STACK_OF(X509_CRL) * |
749 | Ssl::loadCrl(const char *CRLFile, long &flags) | |
a7ad6e4e | 750 | { |
86660d64 CT |
751 | X509_CRL *crl; |
752 | BIO *in = BIO_new_file(CRLFile, "r"); | |
753 | if (!in) { | |
754 | debugs(83, 2, "WARNING: Failed to open CRL file '" << CRLFile << "'"); | |
f4e4d4d6 CT |
755 | return NULL; |
756 | } | |
757 | ||
86660d64 CT |
758 | STACK_OF(X509_CRL) *CRLs = sk_X509_CRL_new_null(); |
759 | if (!CRLs) { | |
760 | debugs(83, 2, "WARNING: Failed to allocate X509_CRL stack to load file '" << CRLFile << "'"); | |
50b4c080 | 761 | return NULL; |
86660d64 | 762 | } |
62e76326 | 763 | |
86660d64 CT |
764 | int count = 0; |
765 | while ((crl = PEM_read_bio_X509_CRL(in,NULL,NULL,NULL))) { | |
766 | if (!sk_X509_CRL_push(CRLs, crl)) | |
767 | debugs(83, 2, "WARNING: Failed to add CRL from file '" << CRLFile << "'"); | |
768 | else | |
769 | ++count; | |
770 | } | |
771 | BIO_free(in); | |
62e76326 | 772 | |
86660d64 CT |
773 | if (count) |
774 | flags |= SSL_FLAG_VERIFY_CRL; | |
3d96b0e8 | 775 | |
86660d64 CT |
776 | return CRLs; |
777 | } | |
3d96b0e8 | 778 | |
86660d64 CT |
779 | DH * |
780 | Ssl::readDHParams(const char *dhfile) | |
781 | { | |
782 | FILE *in = fopen(dhfile, "r"); | |
783 | DH *dh = NULL; | |
784 | int codes; | |
62e76326 | 785 | |
86660d64 CT |
786 | if (in) { |
787 | dh = PEM_read_DHparams(in, NULL, NULL, NULL); | |
788 | fclose(in); | |
f484cdf5 | 789 | } |
790 | ||
86660d64 CT |
791 | if (!dh) |
792 | debugs(83, DBG_IMPORTANT, "WARNING: Failed to read DH parameters '" << dhfile << "'"); | |
793 | else if (dh && DH_check(dh, &codes) == 0) { | |
794 | if (codes) { | |
795 | debugs(83, DBG_IMPORTANT, "WARNING: Failed to verify DH parameters '" << dhfile << "' (" << std::hex << codes << ")"); | |
796 | DH_free(dh); | |
797 | dh = NULL; | |
798 | } | |
f484cdf5 | 799 | } |
86660d64 CT |
800 | return dh; |
801 | } | |
62e76326 | 802 | |
86660d64 CT |
803 | static bool |
804 | configureSslContext(SSL_CTX *sslContext, AnyP::PortCfg &port) | |
805 | { | |
806 | int ssl_error; | |
807 | SSL_CTX_set_options(sslContext, port.sslOptions); | |
f484cdf5 | 808 | |
86660d64 CT |
809 | if (port.sslContextSessionId) |
810 | SSL_CTX_set_session_id_context(sslContext, (const unsigned char *)port.sslContextSessionId, strlen(port.sslContextSessionId)); | |
6b2936d5 | 811 | |
86660d64 | 812 | if (port.sslContextFlags & SSL_FLAG_NO_SESSION_REUSE) { |
b13877cc | 813 | SSL_CTX_set_session_cache_mode(sslContext, SSL_SESS_CACHE_OFF); |
814 | } | |
815 | ||
a9d79803 | 816 | if (Config.SSL.unclean_shutdown) { |
bf8fe701 | 817 | debugs(83, 5, "Enabling quiet SSL shutdowns (RFC violation)."); |
a9d79803 | 818 | |
819 | SSL_CTX_set_quiet_shutdown(sslContext, 1); | |
820 | } | |
821 | ||
86660d64 CT |
822 | if (port.cipher) { |
823 | debugs(83, 5, "Using chiper suite " << port.cipher << "."); | |
62e76326 | 824 | |
86660d64 | 825 | if (!SSL_CTX_set_cipher_list(sslContext, port.cipher)) { |
62e76326 | 826 | ssl_error = ERR_get_error(); |
86660d64 CT |
827 | debugs(83, DBG_CRITICAL, "ERROR: Failed to set SSL cipher suite '" << port.cipher << "': " << ERR_error_string(ssl_error, NULL)); |
828 | return false; | |
62e76326 | 829 | } |
79d4ccdf | 830 | } |
62e76326 | 831 | |
bf8fe701 | 832 | debugs(83, 9, "Setting RSA key generation callback."); |
a7ad6e4e | 833 | SSL_CTX_set_tmp_rsa_callback(sslContext, ssl_temp_rsa_cb); |
834 | ||
bf8fe701 | 835 | debugs(83, 9, "Setting CA certificate locations."); |
62e76326 | 836 | |
86660d64 CT |
837 | const char *cafile = port.cafile ? port.cafile : port.clientca; |
838 | if ((cafile || port.capath) && !SSL_CTX_load_verify_locations(sslContext, cafile, port.capath)) { | |
62e76326 | 839 | ssl_error = ERR_get_error(); |
48e7baac | 840 | debugs(83, DBG_IMPORTANT, "WARNING: Ignoring error setting CA certificate locations: " << ERR_error_string(ssl_error, NULL)); |
a7ad6e4e | 841 | } |
62e76326 | 842 | |
86660d64 | 843 | if (!(port.sslContextFlags & SSL_FLAG_NO_DEFAULT_CA) && |
62e76326 | 844 | !SSL_CTX_set_default_verify_paths(sslContext)) { |
845 | ssl_error = ERR_get_error(); | |
48e7baac | 846 | debugs(83, DBG_IMPORTANT, "WARNING: Ignoring error setting default CA certificate location: " << ERR_error_string(ssl_error, NULL)); |
a7ad6e4e | 847 | } |
62e76326 | 848 | |
86660d64 | 849 | if (port.clientCA.get()) { |
8c1ff4ef | 850 | ERR_clear_error(); |
86660d64 | 851 | SSL_CTX_set_client_CA_list(sslContext, port.clientCA.get()); |
62e76326 | 852 | |
86660d64 | 853 | if (port.sslContextFlags & SSL_FLAG_DELAYED_AUTH) { |
bf8fe701 | 854 | debugs(83, 9, "Not requesting client certificates until acl processing requires one"); |
62e76326 | 855 | SSL_CTX_set_verify(sslContext, SSL_VERIFY_NONE, NULL); |
856 | } else { | |
bf8fe701 | 857 | debugs(83, 9, "Requiring client certificates."); |
62e76326 | 858 | SSL_CTX_set_verify(sslContext, SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT, ssl_verify_cb); |
859 | } | |
a82a4fe4 | 860 | |
86660d64 CT |
861 | if (port.clientVerifyCrls.get()) { |
862 | X509_STORE *st = SSL_CTX_get_cert_store(sslContext); | |
863 | for (int i = 0; i < sk_X509_CRL_num(port.clientVerifyCrls.get()); ++i) { | |
864 | X509_CRL *crl = sk_X509_CRL_value(port.clientVerifyCrls.get(), i); | |
865 | if (!X509_STORE_add_crl(st, crl)) | |
866 | debugs(83, 2, "WARNING: Failed to add CRL"); | |
867 | } | |
a82a4fe4 | 868 | } |
869 | ||
32d002cb | 870 | #if X509_V_FLAG_CRL_CHECK |
86660d64 | 871 | if (port.sslContextFlags & SSL_FLAG_VERIFY_CRL_ALL) |
a82a4fe4 | 872 | X509_STORE_set_flags(SSL_CTX_get_cert_store(sslContext), X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL); |
86660d64 | 873 | else if (port.sslContextFlags & SSL_FLAG_VERIFY_CRL) |
a82a4fe4 | 874 | X509_STORE_set_flags(SSL_CTX_get_cert_store(sslContext), X509_V_FLAG_CRL_CHECK); |
a82a4fe4 | 875 | #endif |
876 | ||
a7ad6e4e | 877 | } else { |
bf8fe701 | 878 | debugs(83, 9, "Not requiring any client certificates"); |
62e76326 | 879 | SSL_CTX_set_verify(sslContext, SSL_VERIFY_NONE, NULL); |
a7ad6e4e | 880 | } |
f484cdf5 | 881 | |
86660d64 CT |
882 | if (port.dhParams.get()) { |
883 | SSL_CTX_set_tmp_dh(sslContext, port.dhParams.get()); | |
884 | } | |
35105e4b | 885 | |
86660d64 CT |
886 | if (port.sslContextFlags & SSL_FLAG_DONT_VERIFY_DOMAIN) |
887 | SSL_CTX_set_ex_data(sslContext, ssl_ctx_ex_index_dont_verify_domain, (void *) -1); | |
888 | ||
10a69fc0 CT |
889 | setSessionCallbacks(sslContext); |
890 | ||
86660d64 CT |
891 | return true; |
892 | } | |
893 | ||
894 | SSL_CTX * | |
895 | sslCreateServerContext(AnyP::PortCfg &port) | |
896 | { | |
897 | int ssl_error; | |
898 | SSL_CTX *sslContext; | |
899 | const char *keyfile, *certfile; | |
900 | certfile = port.cert; | |
901 | keyfile = port.key; | |
902 | ||
903 | ssl_initialize(); | |
904 | ||
905 | if (!keyfile) | |
906 | keyfile = certfile; | |
907 | ||
908 | if (!certfile) | |
909 | certfile = keyfile; | |
910 | ||
911 | sslContext = SSL_CTX_new(port.contextMethod); | |
912 | ||
913 | if (sslContext == NULL) { | |
914 | ssl_error = ERR_get_error(); | |
915 | debugs(83, DBG_CRITICAL, "ERROR: Failed to allocate SSL context: " << ERR_error_string(ssl_error, NULL)); | |
916 | return NULL; | |
917 | } | |
918 | ||
919 | if (!SSL_CTX_use_certificate(sslContext, port.signingCert.get())) { | |
920 | ssl_error = ERR_get_error(); | |
921 | debugs(83, DBG_CRITICAL, "ERROR: Failed to acquire SSL certificate '" << certfile << "': " << ERR_error_string(ssl_error, NULL)); | |
922 | SSL_CTX_free(sslContext); | |
923 | return NULL; | |
924 | } | |
925 | ||
926 | if (!SSL_CTX_use_PrivateKey(sslContext, port.signPkey.get())) { | |
927 | ssl_error = ERR_get_error(); | |
928 | debugs(83, DBG_CRITICAL, "ERROR: Failed to acquire SSL private key '" << keyfile << "': " << ERR_error_string(ssl_error, NULL)); | |
929 | SSL_CTX_free(sslContext); | |
930 | return NULL; | |
931 | } | |
932 | ||
933 | Ssl::addChainToSslContext(sslContext, port.certsToChain.get()); | |
934 | ||
935 | /* Alternate code; | |
936 | debugs(83, DBG_IMPORTANT, "Using certificate in " << certfile); | |
937 | ||
938 | if (!SSL_CTX_use_certificate_chain_file(sslContext, certfile)) { | |
939 | ssl_error = ERR_get_error(); | |
940 | debugs(83, DBG_CRITICAL, "ERROR: Failed to acquire SSL certificate '" << certfile << "': " << ERR_error_string(ssl_error, NULL)); | |
941 | SSL_CTX_free(sslContext); | |
942 | return NULL; | |
35105e4b | 943 | } |
944 | ||
86660d64 CT |
945 | debugs(83, DBG_IMPORTANT, "Using private key in " << keyfile); |
946 | ssl_ask_password(sslContext, keyfile); | |
947 | ||
948 | if (!SSL_CTX_use_PrivateKey_file(sslContext, keyfile, SSL_FILETYPE_PEM)) { | |
949 | ssl_error = ERR_get_error(); | |
950 | debugs(83, DBG_CRITICAL, "ERROR: Failed to acquire SSL private key '" << keyfile << "': " << ERR_error_string(ssl_error, NULL)); | |
951 | SSL_CTX_free(sslContext); | |
952 | return NULL; | |
35105e4b | 953 | } |
954 | ||
86660d64 | 955 | debugs(83, 5, "Comparing private and public SSL keys."); |
35105e4b | 956 | |
86660d64 CT |
957 | if (!SSL_CTX_check_private_key(sslContext)) { |
958 | ssl_error = ERR_get_error(); | |
959 | debugs(83, DBG_CRITICAL, "ERROR: SSL private key '" << certfile << "' does not match public key '" << | |
960 | keyfile << "': " << ERR_error_string(ssl_error, NULL)); | |
961 | SSL_CTX_free(sslContext); | |
962 | return NULL; | |
963 | } | |
964 | */ | |
965 | ||
966 | if (!configureSslContext(sslContext, port)) { | |
967 | debugs(83, DBG_CRITICAL, "ERROR: Configuring static SSL context"); | |
968 | SSL_CTX_free(sslContext); | |
969 | return NULL; | |
970 | } | |
62e76326 | 971 | |
a7ad6e4e | 972 | return sslContext; |
a7ad6e4e | 973 | } |
974 | ||
d620ae0e | 975 | int Ssl::OpenSSLtoSquidSSLVersion(int sslVersion) |
a7ad6e4e | 976 | { |
e1f72a8b | 977 | if (sslVersion == SSL2_VERSION) |
d620ae0e | 978 | return 2; |
e1f72a8b | 979 | else if (sslVersion == SSL3_VERSION) |
d620ae0e | 980 | return 3; |
e1f72a8b | 981 | else if (sslVersion == TLS1_VERSION) |
d620ae0e CT |
982 | return 4; |
983 | #if OPENSSL_VERSION_NUMBER >= 0x10001000L | |
e1f72a8b | 984 | else if (sslVersion == TLS1_1_VERSION) |
d620ae0e | 985 | return 5; |
e1f72a8b | 986 | else if (sslVersion == TLS1_2_VERSION) |
d620ae0e CT |
987 | return 6; |
988 | #endif | |
989 | else | |
990 | return 1; | |
991 | } | |
992 | ||
f1c9c850 | 993 | #if OPENSSL_VERSION_NUMBER < 0x00909000L |
d620ae0e | 994 | SSL_METHOD * |
f1c9c850 | 995 | #else |
d620ae0e | 996 | const SSL_METHOD * |
f1c9c850 | 997 | #endif |
d620ae0e CT |
998 | Ssl::method(int version) |
999 | { | |
1000 | switch (version) { | |
a7ad6e4e | 1001 | |
d620ae0e | 1002 | case 2: |
d620ae0e CT |
1003 | debugs(83, DBG_IMPORTANT, "SSLv2 is not available in this Proxy."); |
1004 | return NULL; | |
d620ae0e | 1005 | break; |
a7ad6e4e | 1006 | |
d620ae0e CT |
1007 | case 3: |
1008 | debugs(83, 5, "Using SSLv3."); | |
1009 | return SSLv3_client_method(); | |
1010 | break; | |
62e76326 | 1011 | |
d620ae0e CT |
1012 | case 4: |
1013 | debugs(83, 5, "Using TLSv1."); | |
1014 | return TLSv1_client_method(); | |
1015 | break; | |
1016 | ||
1017 | case 5: | |
1018 | #if OPENSSL_VERSION_NUMBER >= 0x10001000L // NP: not sure exactly which sub-version yet. | |
1019 | debugs(83, 5, "Using TLSv1.1."); | |
1020 | return TLSv1_1_client_method(); | |
1021 | #else | |
1022 | debugs(83, DBG_IMPORTANT, "TLSv1.1 is not available in this Proxy."); | |
1023 | return NULL; | |
1024 | #endif | |
1025 | break; | |
1026 | ||
1027 | case 6: | |
1028 | #if OPENSSL_VERSION_NUMBER >= 0x10001000L // NP: not sure exactly which sub-version yet. | |
1029 | debugs(83, 5, "Using TLSv1.2"); | |
1030 | return TLSv1_2_client_method(); | |
1031 | #else | |
1032 | debugs(83, DBG_IMPORTANT, "TLSv1.2 is not available in this Proxy."); | |
1033 | return NULL; | |
1034 | #endif | |
1035 | break; | |
a7ad6e4e | 1036 | |
d620ae0e CT |
1037 | case 1: |
1038 | ||
1039 | default: | |
1040 | debugs(83, 5, "Using SSLv2/SSLv3."); | |
1041 | return SSLv23_client_method(); | |
1042 | break; | |
1043 | } | |
1044 | ||
1045 | //Not reached | |
1046 | return NULL; | |
1047 | } | |
1048 | ||
1049 | const SSL_METHOD * | |
1050 | Ssl::serverMethod(int version) | |
1051 | { | |
a7ad6e4e | 1052 | switch (version) { |
62e76326 | 1053 | |
a7ad6e4e | 1054 | case 2: |
48e7baac | 1055 | debugs(83, DBG_IMPORTANT, "SSLv2 is not available in this Proxy."); |
50b4c080 | 1056 | return NULL; |
62e76326 | 1057 | break; |
1058 | ||
a7ad6e4e | 1059 | case 3: |
bf8fe701 | 1060 | debugs(83, 5, "Using SSLv3."); |
d620ae0e | 1061 | return SSLv3_server_method(); |
62e76326 | 1062 | break; |
1063 | ||
a7ad6e4e | 1064 | case 4: |
bf8fe701 | 1065 | debugs(83, 5, "Using TLSv1."); |
d620ae0e | 1066 | return TLSv1_server_method(); |
62e76326 | 1067 | break; |
1068 | ||
3d96b0e8 AJ |
1069 | case 5: |
1070 | #if OPENSSL_VERSION_NUMBER >= 0x10001000L // NP: not sure exactly which sub-version yet. | |
1071 | debugs(83, 5, "Using TLSv1.1."); | |
d620ae0e | 1072 | return TLSv1_1_server_method(); |
3d96b0e8 AJ |
1073 | #else |
1074 | debugs(83, DBG_IMPORTANT, "TLSv1.1 is not available in this Proxy."); | |
1075 | return NULL; | |
1076 | #endif | |
1077 | break; | |
1078 | ||
1079 | case 6: | |
1080 | #if OPENSSL_VERSION_NUMBER >= 0x10001000L // NP: not sure exactly which sub-version yet. | |
1081 | debugs(83, 5, "Using TLSv1.2"); | |
d620ae0e | 1082 | return TLSv1_2_server_method(); |
3d96b0e8 AJ |
1083 | #else |
1084 | debugs(83, DBG_IMPORTANT, "TLSv1.2 is not available in this Proxy."); | |
1085 | return NULL; | |
1086 | #endif | |
1087 | break; | |
1088 | ||
a7ad6e4e | 1089 | case 1: |
62e76326 | 1090 | |
a7ad6e4e | 1091 | default: |
bf8fe701 | 1092 | debugs(83, 5, "Using SSLv2/SSLv3."); |
d620ae0e | 1093 | return SSLv23_server_method(); |
62e76326 | 1094 | break; |
a7ad6e4e | 1095 | } |
1096 | ||
d620ae0e CT |
1097 | //Not reached |
1098 | return NULL; | |
1099 | } | |
1100 | ||
1101 | SSL_CTX * | |
1102 | 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) | |
1103 | { | |
1104 | int ssl_error; | |
31855516 CT |
1105 | Ssl::ContextMethod method; |
1106 | SSL_CTX * sslContext; | |
d620ae0e CT |
1107 | long fl = Ssl::parse_flags(flags); |
1108 | ||
1109 | ssl_initialize(); | |
1110 | ||
1111 | if (!keyfile) | |
1112 | keyfile = certfile; | |
1113 | ||
1114 | if (!certfile) | |
1115 | certfile = keyfile; | |
1116 | ||
1117 | if (!(method = Ssl::method(version))) | |
1118 | return NULL; | |
e1f72a8b | 1119 | |
a7ad6e4e | 1120 | sslContext = SSL_CTX_new(method); |
62e76326 | 1121 | |
a7ad6e4e | 1122 | if (sslContext == NULL) { |
62e76326 | 1123 | ssl_error = ERR_get_error(); |
1124 | fatalf("Failed to allocate SSL context: %s\n", | |
1125 | ERR_error_string(ssl_error, NULL)); | |
a7ad6e4e | 1126 | } |
62e76326 | 1127 | |
86660d64 | 1128 | SSL_CTX_set_options(sslContext, Ssl::parse_options(options)); |
a7ad6e4e | 1129 | |
1130 | if (cipher) { | |
bf8fe701 | 1131 | debugs(83, 5, "Using chiper suite " << cipher << "."); |
62e76326 | 1132 | |
1133 | if (!SSL_CTX_set_cipher_list(sslContext, cipher)) { | |
1134 | ssl_error = ERR_get_error(); | |
1135 | fatalf("Failed to set SSL cipher suite '%s': %s\n", | |
1136 | cipher, ERR_error_string(ssl_error, NULL)); | |
1137 | } | |
a7ad6e4e | 1138 | } |
62e76326 | 1139 | |
a7ad6e4e | 1140 | if (certfile) { |
e0236918 | 1141 | debugs(83, DBG_IMPORTANT, "Using certificate in " << certfile); |
62e76326 | 1142 | |
1143 | if (!SSL_CTX_use_certificate_chain_file(sslContext, certfile)) { | |
1144 | ssl_error = ERR_get_error(); | |
1145 | fatalf("Failed to acquire SSL certificate '%s': %s\n", | |
1146 | certfile, ERR_error_string(ssl_error, NULL)); | |
1147 | } | |
1148 | ||
e0236918 | 1149 | debugs(83, DBG_IMPORTANT, "Using private key in " << keyfile); |
307b83b7 | 1150 | ssl_ask_password(sslContext, keyfile); |
62e76326 | 1151 | |
1152 | if (!SSL_CTX_use_PrivateKey_file(sslContext, keyfile, SSL_FILETYPE_PEM)) { | |
1153 | ssl_error = ERR_get_error(); | |
1154 | fatalf("Failed to acquire SSL private key '%s': %s\n", | |
1155 | keyfile, ERR_error_string(ssl_error, NULL)); | |
1156 | } | |
1157 | ||
bf8fe701 | 1158 | debugs(83, 5, "Comparing private and public SSL keys."); |
62e76326 | 1159 | |
1160 | if (!SSL_CTX_check_private_key(sslContext)) { | |
1161 | ssl_error = ERR_get_error(); | |
1162 | fatalf("SSL private key '%s' does not match public key '%s': %s\n", | |
1163 | certfile, keyfile, ERR_error_string(ssl_error, NULL)); | |
1164 | } | |
a7ad6e4e | 1165 | } |
62e76326 | 1166 | |
bf8fe701 | 1167 | debugs(83, 9, "Setting RSA key generation callback."); |
f484cdf5 | 1168 | SSL_CTX_set_tmp_rsa_callback(sslContext, ssl_temp_rsa_cb); |
1169 | ||
a7ad6e4e | 1170 | if (fl & SSL_FLAG_DONT_VERIFY_PEER) { |
48e7baac | 1171 | debugs(83, 2, "NOTICE: Peer certificates are not verified for validity!"); |
62e76326 | 1172 | SSL_CTX_set_verify(sslContext, SSL_VERIFY_NONE, NULL); |
a7ad6e4e | 1173 | } else { |
bf8fe701 | 1174 | debugs(83, 9, "Setting certificate verification callback."); |
62e76326 | 1175 | SSL_CTX_set_verify(sslContext, SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT, ssl_verify_cb); |
a7ad6e4e | 1176 | } |
f484cdf5 | 1177 | |
bf8fe701 | 1178 | debugs(83, 9, "Setting CA certificate locations."); |
62e76326 | 1179 | |
a82a4fe4 | 1180 | if ((CAfile || CApath) && !SSL_CTX_load_verify_locations(sslContext, CAfile, CApath)) { |
1181 | ssl_error = ERR_get_error(); | |
48e7baac | 1182 | debugs(83, DBG_IMPORTANT, "WARNING: Ignoring error setting CA certificate locations: " << ERR_error_string(ssl_error, NULL)); |
a82a4fe4 | 1183 | } |
1184 | ||
1185 | if (CRLfile) { | |
1186 | ssl_load_crl(sslContext, CRLfile); | |
1187 | fl |= SSL_FLAG_VERIFY_CRL; | |
1188 | } | |
1189 | ||
32d002cb | 1190 | #if X509_V_FLAG_CRL_CHECK |
a82a4fe4 | 1191 | if (fl & SSL_FLAG_VERIFY_CRL_ALL) |
1192 | X509_STORE_set_flags(SSL_CTX_get_cert_store(sslContext), X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL); | |
1193 | else if (fl & SSL_FLAG_VERIFY_CRL) | |
1194 | X509_STORE_set_flags(SSL_CTX_get_cert_store(sslContext), X509_V_FLAG_CRL_CHECK); | |
1195 | ||
1196 | #endif | |
62e76326 | 1197 | |
a7ad6e4e | 1198 | if (!(fl & SSL_FLAG_NO_DEFAULT_CA) && |
62e76326 | 1199 | !SSL_CTX_set_default_verify_paths(sslContext)) { |
1200 | ssl_error = ERR_get_error(); | |
48e7baac | 1201 | debugs(83, DBG_IMPORTANT, "WARNING: Ignoring error setting default CA certificate location: " << ERR_error_string(ssl_error, NULL)); |
f484cdf5 | 1202 | } |
62e76326 | 1203 | |
d193a436 | 1204 | return sslContext; |
f484cdf5 | 1205 | } |
1206 | ||
63be0a78 | 1207 | /// \ingroup ServerProtocolSSLInternal |
d193a436 | 1208 | int |
e6ccf245 | 1209 | ssl_read_method(int fd, char *buf, int len) |
f484cdf5 | 1210 | { |
6de9e64b | 1211 | SSL *ssl = fd_table[fd].ssl; |
79d4ccdf | 1212 | int i; |
1213 | ||
6de9e64b | 1214 | #if DONT_DO_THIS |
1215 | ||
1216 | if (!SSL_is_init_finished(ssl)) { | |
1217 | errno = ENOTCONN; | |
1218 | return -1; | |
1219 | } | |
79d4ccdf | 1220 | |
6de9e64b | 1221 | #endif |
1222 | ||
1223 | i = SSL_read(ssl, buf, len); | |
1224 | ||
1225 | if (i > 0 && SSL_pending(ssl) > 0) { | |
bf8fe701 | 1226 | debugs(83, 2, "SSL FD " << fd << " is pending"); |
be4d35dc | 1227 | fd_table[fd].flags.read_pending = true; |
79d4ccdf | 1228 | } else |
be4d35dc | 1229 | fd_table[fd].flags.read_pending = false; |
79d4ccdf | 1230 | |
1231 | return i; | |
f484cdf5 | 1232 | } |
1233 | ||
63be0a78 | 1234 | /// \ingroup ServerProtocolSSLInternal |
d193a436 | 1235 | int |
e6ccf245 | 1236 | ssl_write_method(int fd, const char *buf, int len) |
f484cdf5 | 1237 | { |
6de9e64b | 1238 | SSL *ssl = fd_table[fd].ssl; |
1239 | int i; | |
1240 | ||
1241 | if (!SSL_is_init_finished(ssl)) { | |
1242 | errno = ENOTCONN; | |
1243 | return -1; | |
1244 | } | |
1245 | ||
1246 | i = SSL_write(ssl, buf, len); | |
1247 | ||
1248 | return i; | |
f484cdf5 | 1249 | } |
79d4ccdf | 1250 | |
1251 | void | |
575d05c4 | 1252 | ssl_shutdown_method(SSL *ssl) |
79d4ccdf | 1253 | { |
79d4ccdf | 1254 | SSL_shutdown(ssl); |
1255 | } | |
a7ad6e4e | 1256 | |
63be0a78 | 1257 | /// \ingroup ServerProtocolSSLInternal |
a7ad6e4e | 1258 | static const char * |
1259 | ssl_get_attribute(X509_NAME * name, const char *attribute_name) | |
1260 | { | |
1261 | static char buffer[1024]; | |
1262 | int nid; | |
1263 | ||
1264 | buffer[0] = '\0'; | |
1265 | ||
1266 | if (strcmp(attribute_name, "DN") == 0) { | |
62e76326 | 1267 | X509_NAME_oneline(name, buffer, sizeof(buffer)); |
1268 | goto done; | |
a7ad6e4e | 1269 | } |
62e76326 | 1270 | |
a7ad6e4e | 1271 | nid = OBJ_txt2nid((char *) attribute_name); |
62e76326 | 1272 | |
a7ad6e4e | 1273 | if (nid == 0) { |
e0236918 | 1274 | debugs(83, DBG_IMPORTANT, "WARNING: Unknown SSL attribute name '" << attribute_name << "'"); |
62e76326 | 1275 | return NULL; |
a7ad6e4e | 1276 | } |
62e76326 | 1277 | |
a7ad6e4e | 1278 | X509_NAME_get_text_by_NID(name, nid, buffer, sizeof(buffer)); |
62e76326 | 1279 | |
1280 | done: | |
a7ad6e4e | 1281 | return *buffer ? buffer : NULL; |
1282 | } | |
1283 | ||
63be0a78 | 1284 | /// \ingroup ServerProtocolSSLInternal |
a7ad6e4e | 1285 | const char * |
00352183 | 1286 | Ssl::GetX509UserAttribute(X509 * cert, const char *attribute_name) |
a7ad6e4e | 1287 | { |
a7ad6e4e | 1288 | X509_NAME *name; |
23e6c4ae | 1289 | const char *ret; |
a7ad6e4e | 1290 | |
a7ad6e4e | 1291 | if (!cert) |
62e76326 | 1292 | return NULL; |
a7ad6e4e | 1293 | |
5a4684b6 | 1294 | name = X509_get_subject_name(cert); |
a7ad6e4e | 1295 | |
23e6c4ae | 1296 | ret = ssl_get_attribute(name, attribute_name); |
1297 | ||
23e6c4ae | 1298 | return ret; |
a7ad6e4e | 1299 | } |
1300 | ||
00352183 AR |
1301 | const char * |
1302 | Ssl::GetX509Fingerprint(X509 * cert, const char *) | |
1303 | { | |
1304 | static char buf[1024]; | |
1305 | if (!cert) | |
1306 | return NULL; | |
960e100b | 1307 | |
00352183 AR |
1308 | unsigned int n; |
1309 | unsigned char md[EVP_MAX_MD_SIZE]; | |
1310 | if (!X509_digest(cert, EVP_sha1(), md, &n)) | |
1311 | return NULL; | |
1312 | ||
1313 | assert(3 * n + 1 < sizeof(buf)); | |
1314 | ||
1315 | char *s = buf; | |
1316 | for (unsigned int i=0; i < n; ++i, s += 3) { | |
1317 | const char term = (i + 1 < n) ? ':' : '\0'; | |
1318 | snprintf(s, 4, "%02X%c", md[i], term); | |
1319 | } | |
1320 | ||
1321 | return buf; | |
1322 | } | |
1323 | ||
63be0a78 | 1324 | /// \ingroup ServerProtocolSSLInternal |
a7ad6e4e | 1325 | const char * |
00352183 | 1326 | Ssl::GetX509CAAttribute(X509 * cert, const char *attribute_name) |
a7ad6e4e | 1327 | { |
00352183 | 1328 | |
a7ad6e4e | 1329 | X509_NAME *name; |
23e6c4ae | 1330 | const char *ret; |
a7ad6e4e | 1331 | |
a7ad6e4e | 1332 | if (!cert) |
62e76326 | 1333 | return NULL; |
a7ad6e4e | 1334 | |
5a4684b6 | 1335 | name = X509_get_issuer_name(cert); |
a7ad6e4e | 1336 | |
23e6c4ae | 1337 | ret = ssl_get_attribute(name, attribute_name); |
1338 | ||
00352183 AR |
1339 | return ret; |
1340 | } | |
1341 | ||
1342 | const char *sslGetUserAttribute(SSL *ssl, const char *attribute_name) | |
1343 | { | |
1344 | if (!ssl) | |
1345 | return NULL; | |
1346 | ||
1347 | X509 *cert = SSL_get_peer_certificate(ssl); | |
1348 | ||
1349 | const char *attr = Ssl::GetX509UserAttribute(cert, attribute_name); | |
1350 | ||
23e6c4ae | 1351 | X509_free(cert); |
00352183 AR |
1352 | return attr; |
1353 | } | |
23e6c4ae | 1354 | |
00352183 AR |
1355 | const char *sslGetCAAttribute(SSL *ssl, const char *attribute_name) |
1356 | { | |
1357 | if (!ssl) | |
1358 | return NULL; | |
1359 | ||
1360 | X509 *cert = SSL_get_peer_certificate(ssl); | |
1361 | ||
1362 | const char *attr = Ssl::GetX509CAAttribute(cert, attribute_name); | |
1363 | ||
1364 | X509_free(cert); | |
1365 | return attr; | |
a7ad6e4e | 1366 | } |
1367 | ||
a7ad6e4e | 1368 | const char * |
1369 | sslGetUserEmail(SSL * ssl) | |
1370 | { | |
e6ceef10 | 1371 | return sslGetUserAttribute(ssl, "emailAddress"); |
a7ad6e4e | 1372 | } |
4ac9968f | 1373 | |
1374 | const char * | |
1375 | sslGetUserCertificatePEM(SSL *ssl) | |
1376 | { | |
1377 | X509 *cert; | |
1378 | BIO *mem; | |
1379 | static char *str = NULL; | |
1380 | char *ptr; | |
1381 | long len; | |
1382 | ||
1383 | safe_free(str); | |
1384 | ||
1385 | if (!ssl) | |
1386 | return NULL; | |
1387 | ||
1388 | cert = SSL_get_peer_certificate(ssl); | |
1389 | ||
1390 | if (!cert) | |
1391 | return NULL; | |
1392 | ||
1393 | mem = BIO_new(BIO_s_mem()); | |
1394 | ||
1395 | PEM_write_bio_X509(mem, cert); | |
1396 | ||
4ac9968f | 1397 | len = BIO_get_mem_data(mem, &ptr); |
1398 | ||
1399 | str = (char *)xmalloc(len + 1); | |
1400 | ||
1401 | memcpy(str, ptr, len); | |
1402 | ||
1403 | str[len] = '\0'; | |
1404 | ||
1405 | X509_free(cert); | |
1406 | ||
1407 | BIO_free(mem); | |
1408 | ||
1409 | return str; | |
1410 | } | |
3d61c476 | 1411 | |
1412 | const char * | |
1413 | sslGetUserCertificateChainPEM(SSL *ssl) | |
1414 | { | |
1415 | STACK_OF(X509) *chain; | |
1416 | BIO *mem; | |
1417 | static char *str = NULL; | |
1418 | char *ptr; | |
1419 | long len; | |
1420 | int i; | |
1421 | ||
1422 | safe_free(str); | |
1423 | ||
1424 | if (!ssl) | |
1425 | return NULL; | |
1426 | ||
1427 | chain = SSL_get_peer_cert_chain(ssl); | |
1428 | ||
1429 | if (!chain) | |
1430 | return sslGetUserCertificatePEM(ssl); | |
1431 | ||
1432 | mem = BIO_new(BIO_s_mem()); | |
1433 | ||
d7ae3534 | 1434 | for (i = 0; i < sk_X509_num(chain); ++i) { |
3d61c476 | 1435 | X509 *cert = sk_X509_value(chain, i); |
1436 | PEM_write_bio_X509(mem, cert); | |
1437 | } | |
1438 | ||
1439 | len = BIO_get_mem_data(mem, &ptr); | |
1440 | ||
1441 | str = (char *)xmalloc(len + 1); | |
1442 | memcpy(str, ptr, len); | |
1443 | str[len] = '\0'; | |
1444 | ||
1445 | BIO_free(mem); | |
1446 | ||
1447 | return str; | |
1448 | } | |
454e8283 | 1449 | |
86660d64 CT |
1450 | Ssl::ContextMethod |
1451 | Ssl::contextMethod(int version) | |
1452 | { | |
1453 | Ssl::ContextMethod method; | |
1454 | ||
1455 | switch (version) { | |
1456 | ||
1457 | case 2: | |
86660d64 CT |
1458 | debugs(83, DBG_IMPORTANT, "SSLv2 is not available in this Proxy."); |
1459 | return NULL; | |
86660d64 CT |
1460 | break; |
1461 | ||
1462 | case 3: | |
1463 | debugs(83, 5, "Using SSLv3."); | |
1464 | method = SSLv3_server_method(); | |
1465 | break; | |
1466 | ||
1467 | case 4: | |
1468 | debugs(83, 5, "Using TLSv1."); | |
1469 | method = TLSv1_server_method(); | |
1470 | break; | |
1471 | ||
1472 | case 5: | |
1473 | #if OPENSSL_VERSION_NUMBER >= 0x10001000L // NP: not sure exactly which sub-version yet. | |
1474 | debugs(83, 5, "Using TLSv1.1."); | |
1475 | method = TLSv1_1_server_method(); | |
1476 | #else | |
1477 | debugs(83, DBG_IMPORTANT, "TLSv1.1 is not available in this Proxy."); | |
1478 | return NULL; | |
1479 | #endif | |
1480 | break; | |
1481 | ||
1482 | case 6: | |
1483 | #if OPENSSL_VERSION_NUMBER >= 0x10001000L // NP: not sure exactly which sub-version yet. | |
1484 | debugs(83, 5, "Using TLSv1.2"); | |
1485 | method = TLSv1_2_server_method(); | |
1486 | #else | |
1487 | debugs(83, DBG_IMPORTANT, "TLSv1.2 is not available in this Proxy."); | |
1488 | return NULL; | |
1489 | #endif | |
1490 | break; | |
1491 | ||
1492 | case 1: | |
1493 | ||
1494 | default: | |
1495 | debugs(83, 5, "Using SSLv2/SSLv3."); | |
1496 | method = SSLv23_server_method(); | |
1497 | break; | |
1498 | } | |
1499 | return method; | |
1500 | } | |
1501 | ||
95d2589c CT |
1502 | /// \ingroup ServerProtocolSSLInternal |
1503 | /// Create SSL context and apply ssl certificate and private key to it. | |
d620ae0e CT |
1504 | SSL_CTX * |
1505 | Ssl::createSSLContext(Ssl::X509_Pointer & x509, Ssl::EVP_PKEY_Pointer & pkey, AnyP::PortCfg &port) | |
95d2589c | 1506 | { |
86660d64 | 1507 | Ssl::SSL_CTX_Pointer sslContext(SSL_CTX_new(port.contextMethod)); |
95d2589c CT |
1508 | |
1509 | if (!SSL_CTX_use_certificate(sslContext.get(), x509.get())) | |
1510 | return NULL; | |
1511 | ||
1512 | if (!SSL_CTX_use_PrivateKey(sslContext.get(), pkey.get())) | |
1513 | return NULL; | |
86660d64 CT |
1514 | |
1515 | if (!configureSslContext(sslContext.get(), port)) | |
1516 | return NULL; | |
1517 | ||
95d2589c CT |
1518 | return sslContext.release(); |
1519 | } | |
1520 | ||
86660d64 CT |
1521 | SSL_CTX * |
1522 | Ssl::generateSslContextUsingPkeyAndCertFromMemory(const char * data, AnyP::PortCfg &port) | |
95d2589c CT |
1523 | { |
1524 | Ssl::X509_Pointer cert; | |
1525 | Ssl::EVP_PKEY_Pointer pkey; | |
1526 | if (!readCertAndPrivateKeyFromMemory(cert, pkey, data)) | |
1527 | return NULL; | |
1528 | ||
1529 | if (!cert || !pkey) | |
1530 | return NULL; | |
1531 | ||
86660d64 | 1532 | return createSSLContext(cert, pkey, port); |
95d2589c CT |
1533 | } |
1534 | ||
86660d64 CT |
1535 | SSL_CTX * |
1536 | Ssl::generateSslContext(CertificateProperties const &properties, AnyP::PortCfg &port) | |
95d2589c CT |
1537 | { |
1538 | Ssl::X509_Pointer cert; | |
1539 | Ssl::EVP_PKEY_Pointer pkey; | |
aebe6888 | 1540 | if (!generateSslCertificate(cert, pkey, properties)) |
95d2589c | 1541 | return NULL; |
9a90aace | 1542 | |
95d2589c CT |
1543 | if (!cert) |
1544 | return NULL; | |
1545 | ||
1546 | if (!pkey) | |
1547 | return NULL; | |
1548 | ||
86660d64 | 1549 | return createSSLContext(cert, pkey, port); |
95d2589c CT |
1550 | } |
1551 | ||
d620ae0e CT |
1552 | bool |
1553 | Ssl::configureSSL(SSL *ssl, CertificateProperties const &properties, AnyP::PortCfg &port) | |
1554 | { | |
1555 | Ssl::X509_Pointer cert; | |
1556 | Ssl::EVP_PKEY_Pointer pkey; | |
1557 | if (!generateSslCertificate(cert, pkey, properties)) | |
1558 | return false; | |
1559 | ||
1560 | if (!cert) | |
1561 | return false; | |
1562 | ||
1563 | if (!pkey) | |
1564 | return false; | |
1565 | ||
1566 | if (!SSL_use_certificate(ssl, cert.get())) | |
1567 | return false; | |
1568 | ||
1569 | if (!SSL_use_PrivateKey(ssl, pkey.get())) | |
1570 | return false; | |
1571 | ||
1572 | return true; | |
1573 | } | |
1574 | ||
1575 | bool | |
1576 | Ssl::configureSSLUsingPkeyAndCertFromMemory(SSL *ssl, const char *data, AnyP::PortCfg &port) | |
1577 | { | |
1578 | Ssl::X509_Pointer cert; | |
1579 | Ssl::EVP_PKEY_Pointer pkey; | |
1580 | if (!readCertAndPrivateKeyFromMemory(cert, pkey, data)) | |
1581 | return false; | |
1582 | ||
1583 | if (!cert || !pkey) | |
1584 | return false; | |
1585 | ||
1586 | if (!SSL_use_certificate(ssl, cert.get())) | |
1587 | return false; | |
1588 | ||
1589 | if (!SSL_use_PrivateKey(ssl, pkey.get())) | |
1590 | return false; | |
1591 | ||
1592 | return true; | |
1593 | } | |
1594 | ||
4ece76b2 | 1595 | bool Ssl::verifySslCertificate(SSL_CTX * sslContext, CertificateProperties const &properties) |
95d2589c | 1596 | { |
b8658552 CT |
1597 | // SSL_get_certificate is buggy in openssl versions 1.0.1d and 1.0.1e |
1598 | // Try to retrieve certificate directly from SSL_CTX object | |
fc321c30 | 1599 | #if SQUID_USE_SSLGETCERTIFICATE_HACK |
b8658552 CT |
1600 | X509 ***pCert = (X509 ***)sslContext->cert; |
1601 | X509 * cert = pCert && *pCert ? **pCert : NULL; | |
fc321c30 CT |
1602 | #elif SQUID_SSLGETCERTIFICATE_BUGGY |
1603 | X509 * cert = NULL; | |
1604 | assert(0); | |
b8658552 | 1605 | #else |
95d2589c CT |
1606 | // Temporary ssl for getting X509 certificate from SSL_CTX. |
1607 | Ssl::SSL_Pointer ssl(SSL_new(sslContext)); | |
1608 | X509 * cert = SSL_get_certificate(ssl.get()); | |
b8658552 CT |
1609 | #endif |
1610 | if (!cert) | |
1611 | return false; | |
95d2589c CT |
1612 | ASN1_TIME * time_notBefore = X509_get_notBefore(cert); |
1613 | ASN1_TIME * time_notAfter = X509_get_notAfter(cert); | |
1614 | bool ret = (X509_cmp_current_time(time_notBefore) < 0 && X509_cmp_current_time(time_notAfter) > 0); | |
e7bcc25f CT |
1615 | if (!ret) |
1616 | return false; | |
1617 | ||
4ece76b2 | 1618 | return certificateMatchesProperties(cert, properties); |
95d2589c CT |
1619 | } |
1620 | ||
253749a8 CT |
1621 | bool |
1622 | Ssl::setClientSNI(SSL *ssl, const char *fqdn) | |
1623 | { | |
1624 | //The SSL_CTRL_SET_TLSEXT_HOSTNAME is a openssl macro which indicates | |
1625 | // if the TLS servername extension (SNI) is enabled in openssl library. | |
1626 | #if defined(SSL_CTRL_SET_TLSEXT_HOSTNAME) | |
1627 | if (!SSL_set_tlsext_host_name(ssl, fqdn)) { | |
1628 | const int ssl_error = ERR_get_error(); | |
1629 | debugs(83, 3, "WARNING: unable to set TLS servername extension (SNI): " << | |
1630 | ERR_error_string(ssl_error, NULL) << "\n"); | |
1631 | return false; | |
1632 | } | |
1633 | return true; | |
1634 | #else | |
1635 | debugs(83, 7, "no support for TLS servername extension (SNI)\n"); | |
1636 | return false; | |
1637 | #endif | |
1638 | } | |
1639 | ||
a594dbfa CT |
1640 | void Ssl::addChainToSslContext(SSL_CTX *sslContext, STACK_OF(X509) *chain) |
1641 | { | |
1642 | if (!chain) | |
1643 | return; | |
1644 | ||
d7ae3534 | 1645 | for (int i = 0; i < sk_X509_num(chain); ++i) { |
a594dbfa CT |
1646 | X509 *cert = sk_X509_value(chain, i); |
1647 | if (SSL_CTX_add_extra_chain_cert(sslContext, cert)) { | |
1648 | // increase the certificate lock | |
1649 | CRYPTO_add(&(cert->references),1,CRYPTO_LOCK_X509); | |
1650 | } else { | |
1651 | const int ssl_error = ERR_get_error(); | |
1652 | debugs(83, DBG_IMPORTANT, "WARNING: can not add certificate to SSL context chain: " << ERR_error_string(ssl_error, NULL)); | |
1653 | } | |
1654 | } | |
1655 | } | |
1656 | ||
1657 | /** | |
1658 | \ingroup ServerProtocolSSLInternal | |
1659 | * Read certificate from file. | |
1660 | * See also: static readSslX509Certificate function, gadgets.cc file | |
1661 | */ | |
1662 | static X509 * readSslX509CertificatesChain(char const * certFilename, STACK_OF(X509)* chain) | |
1663 | { | |
1664 | if (!certFilename) | |
1665 | return NULL; | |
1666 | Ssl::BIO_Pointer bio(BIO_new(BIO_s_file_internal())); | |
1667 | if (!bio) | |
1668 | return NULL; | |
1669 | if (!BIO_read_filename(bio.get(), certFilename)) | |
1670 | return NULL; | |
1671 | X509 *certificate = PEM_read_bio_X509(bio.get(), NULL, NULL, NULL); | |
1672 | ||
1673 | if (certificate && chain) { | |
1674 | ||
c11211d9 | 1675 | if (X509_check_issued(certificate, certificate) == X509_V_OK) |
a594dbfa CT |
1676 | debugs(83, 5, "Certificate is self-signed, will not be chained"); |
1677 | else { | |
a411d213 | 1678 | // and add to the chain any other certificate exist in the file |
a594dbfa CT |
1679 | while (X509 *ca = PEM_read_bio_X509(bio.get(), NULL, NULL, NULL)) { |
1680 | if (!sk_X509_push(chain, ca)) | |
1681 | debugs(83, DBG_IMPORTANT, "WARNING: unable to add CA certificate to cert chain"); | |
1682 | } | |
1683 | } | |
1684 | } | |
c11211d9 | 1685 | |
a594dbfa CT |
1686 | return certificate; |
1687 | } | |
1688 | ||
1689 | void Ssl::readCertChainAndPrivateKeyFromFiles(X509_Pointer & cert, EVP_PKEY_Pointer & pkey, X509_STACK_Pointer & chain, char const * certFilename, char const * keyFilename) | |
1690 | { | |
1691 | if (keyFilename == NULL) | |
1692 | keyFilename = certFilename; | |
86660d64 CT |
1693 | |
1694 | if (certFilename == NULL) | |
1695 | certFilename = keyFilename; | |
1696 | ||
1697 | debugs(83, DBG_IMPORTANT, "Using certificate in " << certFilename); | |
1698 | ||
a594dbfa CT |
1699 | if (!chain) |
1700 | chain.reset(sk_X509_new_null()); | |
1701 | if (!chain) | |
1702 | debugs(83, DBG_IMPORTANT, "WARNING: unable to allocate memory for cert chain"); | |
37144aca AR |
1703 | // XXX: ssl_ask_password_cb needs SSL_CTX_set_default_passwd_cb_userdata() |
1704 | // so this may not fully work iff Config.Program.ssl_password is set. | |
1705 | pem_password_cb *cb = ::Config.Program.ssl_password ? &ssl_ask_password_cb : NULL; | |
1706 | pkey.reset(readSslPrivateKey(keyFilename, cb)); | |
a594dbfa CT |
1707 | cert.reset(readSslX509CertificatesChain(certFilename, chain.get())); |
1708 | if (!pkey || !cert || !X509_check_private_key(cert.get(), pkey.get())) { | |
1709 | pkey.reset(NULL); | |
1710 | cert.reset(NULL); | |
1711 | } | |
1712 | } | |
1713 | ||
95588170 CT |
1714 | bool Ssl::generateUntrustedCert(X509_Pointer &untrustedCert, EVP_PKEY_Pointer &untrustedPkey, X509_Pointer const &cert, EVP_PKEY_Pointer const & pkey) |
1715 | { | |
1716 | // Generate the self-signed certificate, using a hard-coded subject prefix | |
1717 | Ssl::CertificateProperties certProperties; | |
1718 | if (const char *cn = CommonHostName(cert.get())) { | |
1719 | certProperties.commonName = "Not trusted by \""; | |
1720 | certProperties.commonName += cn; | |
1721 | certProperties.commonName += "\""; | |
87f237a9 | 1722 | } else if (const char *org = getOrganization(cert.get())) { |
95588170 CT |
1723 | certProperties.commonName = "Not trusted by \""; |
1724 | certProperties.commonName += org; | |
1725 | certProperties.commonName += "\""; | |
87f237a9 | 1726 | } else |
95588170 CT |
1727 | certProperties.commonName = "Not trusted"; |
1728 | certProperties.setCommonName = true; | |
1729 | // O, OU, and other CA subject fields will be mimicked | |
1730 | // Expiration date and other common properties will be mimicked | |
1731 | certProperties.signAlgorithm = Ssl::algSignSelf; | |
1732 | certProperties.signWithPkey.resetAndLock(pkey.get()); | |
1733 | certProperties.mimicCert.resetAndLock(cert.get()); | |
1734 | return Ssl::generateSslCertificate(untrustedCert, untrustedPkey, certProperties); | |
1735 | } | |
1736 | ||
b3a8ae1b | 1737 | SSL * |
d620ae0e | 1738 | SslCreate(SSL_CTX *sslContext, const int fd, Ssl::Bio::Type type, const char *squidCtx) |
b3a8ae1b AR |
1739 | { |
1740 | const char *errAction = NULL; | |
1741 | int errCode = 0; | |
1742 | if (SSL *ssl = SSL_new(sslContext)) { | |
1743 | // without BIO, we would call SSL_set_fd(ssl, fd) instead | |
d620ae0e | 1744 | if (BIO *bio = Ssl::Bio::Create(fd, type)) { |
b3a8ae1b AR |
1745 | Ssl::Bio::Link(ssl, bio); // cannot fail |
1746 | ||
1747 | fd_table[fd].ssl = ssl; | |
1748 | fd_table[fd].read_method = &ssl_read_method; | |
1749 | fd_table[fd].write_method = &ssl_write_method; | |
1750 | fd_note(fd, squidCtx); | |
1751 | ||
1752 | return ssl; | |
1753 | } | |
1754 | errCode = ERR_get_error(); | |
1755 | errAction = "failed to initialize I/O"; | |
1756 | SSL_free(ssl); | |
1757 | } else { | |
1758 | errCode = ERR_get_error(); | |
1759 | errAction = "failed to allocate handle"; | |
1760 | } | |
1761 | ||
1762 | debugs(83, DBG_IMPORTANT, "ERROR: " << squidCtx << ' ' << errAction << | |
1763 | ": " << ERR_error_string(errCode, NULL)); | |
1764 | return NULL; | |
1765 | } | |
1766 | ||
d620ae0e CT |
1767 | SSL * |
1768 | Ssl::CreateClient(SSL_CTX *sslContext, const int fd, const char *squidCtx) | |
1769 | { | |
1770 | return SslCreate(sslContext, fd, Ssl::Bio::BIO_TO_SERVER, squidCtx); | |
1771 | } | |
1772 | ||
1773 | SSL * | |
1774 | Ssl::CreateServer(SSL_CTX *sslContext, const int fd, const char *squidCtx) | |
1775 | { | |
1776 | return SslCreate(sslContext, fd, Ssl::Bio::BIO_TO_CLIENT, squidCtx); | |
1777 | } | |
1778 | ||
62a7607e | 1779 | Ssl::CertError::CertError(ssl_error_t anErr, X509 *aCert): code(anErr) |
170cb017 | 1780 | { |
62a7607e CT |
1781 | cert.resetAndLock(aCert); |
1782 | } | |
1783 | ||
1784 | Ssl::CertError::CertError(CertError const &err): code(err.code) | |
1785 | { | |
1786 | cert.resetAndLock(err.cert.get()); | |
1787 | } | |
1788 | ||
1789 | Ssl::CertError & | |
170cb017 | 1790 | Ssl::CertError::operator = (const CertError &old) |
62a7607e | 1791 | { |
170cb017 | 1792 | code = old.code; |
62a7607e CT |
1793 | cert.resetAndLock(old.cert.get()); |
1794 | return *this; | |
1795 | } | |
1796 | ||
1797 | bool | |
1798 | Ssl::CertError::operator == (const CertError &ce) const | |
1799 | { | |
1800 | return code == ce.code && cert.get() == ce.cert.get(); | |
1801 | } | |
1802 | ||
1803 | bool | |
1804 | Ssl::CertError::operator != (const CertError &ce) const | |
1805 | { | |
1806 | return code != ce.code || cert.get() != ce.cert.get(); | |
1807 | } | |
1808 | ||
10a69fc0 CT |
1809 | static int |
1810 | store_session_cb(SSL *ssl, SSL_SESSION *session) | |
1811 | { | |
1812 | if (!SslSessionCache) | |
1813 | return 0; | |
1814 | ||
1815 | debugs(83, 5, "Request to store SSL Session "); | |
1816 | ||
1817 | SSL_SESSION_set_timeout(session, Config.SSL.session_ttl); | |
1818 | ||
1819 | unsigned char *id = session->session_id; | |
1820 | unsigned int idlen = session->session_id_length; | |
1821 | unsigned char key[MEMMAP_SLOT_KEY_SIZE]; | |
1822 | // Session ids are of size 32bytes. They should always fit to a | |
86c63190 | 1823 | // MemMap::Slot::key |
10a69fc0 CT |
1824 | assert(idlen <= MEMMAP_SLOT_KEY_SIZE); |
1825 | memset(key, 0, sizeof(key)); | |
1826 | memcpy(key, id, idlen); | |
1827 | int pos; | |
1828 | Ipc::MemMap::Slot *slotW = SslSessionCache->openForWriting((const cache_key*)key, pos); | |
1829 | if (slotW) { | |
1830 | int lenRequired = i2d_SSL_SESSION(session, NULL); | |
1831 | if (lenRequired < MEMMAP_SLOT_DATA_SIZE) { | |
1832 | unsigned char *p = (unsigned char *)slotW->p; | |
1833 | lenRequired = i2d_SSL_SESSION(session, &p); | |
1834 | slotW->set(key, NULL, lenRequired, squid_curtime + Config.SSL.session_ttl); | |
1835 | } | |
1836 | SslSessionCache->closeForWriting(pos); | |
1837 | debugs(83, 5, "wrote an ssl session entry of size " << lenRequired << " at pos " << pos); | |
1838 | } | |
1839 | return 0; | |
1840 | } | |
1841 | ||
1842 | static void | |
1843 | remove_session_cb(SSL_CTX *, SSL_SESSION *sessionID) | |
1844 | { | |
1845 | if (!SslSessionCache) | |
1846 | return ; | |
1847 | ||
1848 | debugs(83, 5, "Request to remove corrupted or not valid SSL Session "); | |
1849 | int pos; | |
1850 | Ipc::MemMap::Slot const *slot = SslSessionCache->openForReading((const cache_key*)sessionID, pos); | |
1851 | if (slot == NULL) | |
1852 | return; | |
1853 | SslSessionCache->closeForReading(pos); | |
1854 | // TODO: | |
1855 | // What if we are not able to remove the session? | |
1856 | // Maybe schedule a job to remove it later? | |
1857 | // For now we just have an invalid entry in cache until will be expired | |
1858 | // The openSSL will reject it when we try to use it | |
1859 | SslSessionCache->free(pos); | |
1860 | } | |
1861 | ||
1862 | static SSL_SESSION * | |
1863 | get_session_cb(SSL *, unsigned char *sessionID, int len, int *copy) | |
1864 | { | |
1865 | if (!SslSessionCache) | |
1866 | return NULL; | |
1867 | ||
1868 | SSL_SESSION *session = NULL; | |
1869 | const unsigned int *p; | |
1870 | p = (unsigned int *)sessionID; | |
1871 | debugs(83, 5, "Request to search for SSL Session of len:" << | |
1872 | len << p[0] << ":" << p[1]); | |
1873 | ||
1874 | int pos; | |
1875 | Ipc::MemMap::Slot const *slot = SslSessionCache->openForReading((const cache_key*)sessionID, pos); | |
1876 | if (slot != NULL) { | |
1877 | if (slot->expire > squid_curtime) { | |
1878 | const unsigned char *ptr = slot->p; | |
1879 | session = d2i_SSL_SESSION(NULL, &ptr, slot->pSize); | |
1880 | debugs(83, 5, "Session retrieved from cache at pos " << pos); | |
1881 | } else | |
1882 | debugs(83, 5, "Session in cache expired"); | |
1883 | SslSessionCache->closeForReading(pos); | |
1884 | } | |
1885 | ||
1886 | if (!session) | |
1887 | debugs(83, 5, "Failed to retrieved from cache\n"); | |
1888 | ||
1889 | // With the parameter copy the callback can require the SSL engine | |
1890 | // to increment the reference count of the SSL_SESSION object, Normally | |
1891 | // the reference count is not incremented and therefore the session must | |
1892 | // not be explicitly freed with SSL_SESSION_free(3). | |
1893 | *copy = 0; | |
1894 | return session; | |
1895 | } | |
1896 | ||
1897 | static void | |
1898 | setSessionCallbacks(SSL_CTX *ctx) | |
1899 | { | |
1900 | if (SslSessionCache) { | |
1901 | SSL_CTX_set_session_cache_mode(ctx, SSL_SESS_CACHE_SERVER|SSL_SESS_CACHE_NO_INTERNAL); | |
1902 | SSL_CTX_sess_set_new_cb(ctx, store_session_cb); | |
1903 | SSL_CTX_sess_set_remove_cb(ctx, remove_session_cb); | |
1904 | SSL_CTX_sess_set_get_cb(ctx, get_session_cb); | |
1905 | } | |
1906 | } | |
1907 | ||
1908 | static bool | |
1909 | isSslServer() | |
1910 | { | |
d00790b2 | 1911 | if (HttpsPortList != NULL) |
10a69fc0 CT |
1912 | return true; |
1913 | ||
fa720bfb | 1914 | for (AnyP::PortCfgPointer s = HttpPortList; s != NULL; s = s->next) { |
10a69fc0 CT |
1915 | if (s->flags.tunnelSslBumping) |
1916 | return true; | |
1917 | } | |
1918 | ||
1919 | return false; | |
1920 | } | |
1921 | ||
1922 | #define SSL_SESSION_ID_SIZE 32 | |
1923 | #define SSL_SESSION_MAX_SIZE 10*1024 | |
1924 | ||
1925 | void | |
1926 | Ssl::initialize_session_cache() | |
1927 | { | |
1928 | ||
1929 | if (!isSslServer()) //no need to configure ssl session cache. | |
1930 | return; | |
1931 | ||
86c63190 | 1932 | // Check if the MemMap keys and data are enough big to hold |
10a69fc0 CT |
1933 | // session ids and session data |
1934 | assert(SSL_SESSION_ID_SIZE >= MEMMAP_SLOT_KEY_SIZE); | |
1935 | assert(SSL_SESSION_MAX_SIZE >= MEMMAP_SLOT_DATA_SIZE); | |
1936 | ||
1937 | int configuredItems = ::Config.SSL.sessionCacheSize / sizeof(Ipc::MemMap::Slot); | |
1938 | if (IamWorkerProcess() && configuredItems) | |
1939 | SslSessionCache = new Ipc::MemMap(SslSessionCacheName); | |
1940 | else { | |
1941 | SslSessionCache = NULL; | |
1942 | return; | |
1943 | } | |
1944 | ||
fa720bfb | 1945 | for (AnyP::PortCfgPointer s = HttpsPortList; s != NULL; s = s->next) { |
10a69fc0 CT |
1946 | if (s->staticSslContext.get() != NULL) |
1947 | setSessionCallbacks(s->staticSslContext.get()); | |
1948 | } | |
1949 | ||
fa720bfb | 1950 | for (AnyP::PortCfgPointer s = HttpPortList; s != NULL; s = s->next) { |
10a69fc0 CT |
1951 | if (s->staticSslContext.get() != NULL) |
1952 | setSessionCallbacks(s->staticSslContext.get()); | |
1953 | } | |
1954 | } | |
1955 | ||
1956 | void | |
1957 | destruct_session_cache() | |
1958 | { | |
1959 | delete SslSessionCache; | |
1960 | } | |
1961 | ||
1962 | /// initializes shared memory segments used by MemStore | |
1963 | class SharedSessionCacheRr: public Ipc::Mem::RegisteredRunner | |
1964 | { | |
1965 | public: | |
1966 | /* RegisteredRunner API */ | |
1967 | SharedSessionCacheRr(): owner(NULL) {} | |
21b7990f | 1968 | virtual void useConfig(); |
10a69fc0 CT |
1969 | virtual ~SharedSessionCacheRr(); |
1970 | ||
1971 | protected: | |
21b7990f | 1972 | virtual void create(); |
10a69fc0 CT |
1973 | |
1974 | private: | |
1975 | Ipc::MemMap::Owner *owner; | |
1976 | }; | |
1977 | ||
21b7990f | 1978 | RunnerRegistrationEntry(SharedSessionCacheRr); |
10a69fc0 CT |
1979 | |
1980 | void | |
21b7990f | 1981 | SharedSessionCacheRr::useConfig() |
10a69fc0 | 1982 | { |
21b7990f | 1983 | Ipc::Mem::RegisteredRunner::useConfig(); |
10a69fc0 CT |
1984 | } |
1985 | ||
1986 | void | |
21b7990f | 1987 | SharedSessionCacheRr::create() |
10a69fc0 CT |
1988 | { |
1989 | if (!isSslServer()) //no need to configure ssl session cache. | |
1990 | return; | |
1991 | ||
1992 | int items; | |
1993 | items = Config.SSL.sessionCacheSize / sizeof(Ipc::MemMap::Slot); | |
1994 | if (items) | |
1995 | owner = Ipc::MemMap::Init(SslSessionCacheName, items); | |
1996 | } | |
1997 | ||
1998 | SharedSessionCacheRr::~SharedSessionCacheRr() | |
1999 | { | |
2000 | delete owner; | |
2001 | } | |
d620ae0e | 2002 | |
cb4f4424 | 2003 | #endif /* USE_OPENSSL */ |
f53969cc | 2004 |