Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
| 2 | * All rights reserved. |
| 3 | * |
| 4 | * This package is an SSL implementation written |
| 5 | * by Eric Young (eay@cryptsoft.com). |
| 6 | * The implementation was written so as to conform with Netscapes SSL. |
| 7 | * |
| 8 | * This library is free for commercial and non-commercial use as long as |
| 9 | * the following conditions are aheared to. The following conditions |
| 10 | * apply to all code found in this distribution, be it the RC4, RSA, |
| 11 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation |
| 12 | * included with this distribution is covered by the same copyright terms |
| 13 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). |
| 14 | * |
| 15 | * Copyright remains Eric Young's, and as such any Copyright notices in |
| 16 | * the code are not to be removed. |
| 17 | * If this package is used in a product, Eric Young should be given attribution |
| 18 | * as the author of the parts of the library used. |
| 19 | * This can be in the form of a textual message at program startup or |
| 20 | * in documentation (online or textual) provided with the package. |
| 21 | * |
| 22 | * Redistribution and use in source and binary forms, with or without |
| 23 | * modification, are permitted provided that the following conditions |
| 24 | * are met: |
| 25 | * 1. Redistributions of source code must retain the copyright |
| 26 | * notice, this list of conditions and the following disclaimer. |
| 27 | * 2. Redistributions in binary form must reproduce the above copyright |
| 28 | * notice, this list of conditions and the following disclaimer in the |
| 29 | * documentation and/or other materials provided with the distribution. |
| 30 | * 3. All advertising materials mentioning features or use of this software |
| 31 | * must display the following acknowledgement: |
| 32 | * "This product includes cryptographic software written by |
| 33 | * Eric Young (eay@cryptsoft.com)" |
| 34 | * The word 'cryptographic' can be left out if the rouines from the library |
| 35 | * being used are not cryptographic related :-). |
| 36 | * 4. If you include any Windows specific code (or a derivative thereof) from |
| 37 | * the apps directory (application code) you must include an acknowledgement: |
| 38 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" |
| 39 | * |
| 40 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
| 41 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 42 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 43 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 44 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 45 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 46 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 47 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 48 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 49 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 50 | * SUCH DAMAGE. |
| 51 | * |
| 52 | * The licence and distribution terms for any publically available version or |
| 53 | * derivative of this code cannot be changed. i.e. this code cannot simply be |
| 54 | * copied and put under another distribution licence |
| 55 | * [including the GNU Public Licence.] |
| 56 | */ |
| 57 | /* ==================================================================== |
| 58 | * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved. |
| 59 | * |
| 60 | * Redistribution and use in source and binary forms, with or without |
| 61 | * modification, are permitted provided that the following conditions |
| 62 | * are met: |
| 63 | * |
| 64 | * 1. Redistributions of source code must retain the above copyright |
| 65 | * notice, this list of conditions and the following disclaimer. |
| 66 | * |
| 67 | * 2. Redistributions in binary form must reproduce the above copyright |
| 68 | * notice, this list of conditions and the following disclaimer in |
| 69 | * the documentation and/or other materials provided with the |
| 70 | * distribution. |
| 71 | * |
| 72 | * 3. All advertising materials mentioning features or use of this |
| 73 | * software must display the following acknowledgment: |
| 74 | * "This product includes software developed by the OpenSSL Project |
| 75 | * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" |
| 76 | * |
| 77 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
| 78 | * endorse or promote products derived from this software without |
| 79 | * prior written permission. For written permission, please contact |
| 80 | * openssl-core@openssl.org. |
| 81 | * |
| 82 | * 5. Products derived from this software may not be called "OpenSSL" |
| 83 | * nor may "OpenSSL" appear in their names without prior written |
| 84 | * permission of the OpenSSL Project. |
| 85 | * |
| 86 | * 6. Redistributions of any form whatsoever must retain the following |
| 87 | * acknowledgment: |
| 88 | * "This product includes software developed by the OpenSSL Project |
| 89 | * for use in the OpenSSL Toolkit (http://www.openssl.org/)" |
| 90 | * |
| 91 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
| 92 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 93 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 94 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR |
| 95 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 96 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 97 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 98 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 99 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 100 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 101 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
| 102 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
| 103 | * ==================================================================== |
| 104 | * |
| 105 | * This product includes cryptographic software written by Eric Young |
| 106 | * (eay@cryptsoft.com). This product includes software written by Tim |
| 107 | * Hudson (tjh@cryptsoft.com). |
| 108 | * |
| 109 | */ |
| 110 | /* ==================================================================== |
| 111 | * Copyright 2005 Nokia. All rights reserved. |
| 112 | * |
| 113 | * The portions of the attached software ("Contribution") is developed by |
| 114 | * Nokia Corporation and is licensed pursuant to the OpenSSL open source |
| 115 | * license. |
| 116 | * |
| 117 | * The Contribution, originally written by Mika Kousa and Pasi Eronen of |
| 118 | * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites |
| 119 | * support (see RFC 4279) to OpenSSL. |
| 120 | * |
| 121 | * No patent licenses or other rights except those expressly stated in |
| 122 | * the OpenSSL open source license shall be deemed granted or received |
| 123 | * expressly, by implication, estoppel, or otherwise. |
| 124 | * |
| 125 | * No assurances are provided by Nokia that the Contribution does not |
| 126 | * infringe the patent or other intellectual property rights of any third |
| 127 | * party or that the license provides you with all the necessary rights |
| 128 | * to make use of the Contribution. |
| 129 | * |
| 130 | * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN |
| 131 | * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA |
| 132 | * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY |
| 133 | * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR |
| 134 | * OTHERWISE. */ |
| 135 | |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 136 | #include <openssl/ssl.h> |
| 137 | |
| 138 | #include <assert.h> |
David Benjamin | 7c0d06c | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 139 | #include <stdlib.h> |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 140 | #include <string.h> |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 141 | |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 142 | #include <openssl/err.h> |
| 143 | #include <openssl/lhash.h> |
| 144 | #include <openssl/mem.h> |
| 145 | #include <openssl/rand.h> |
| 146 | |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 147 | #include "internal.h" |
| 148 | #include "../crypto/internal.h" |
| 149 | |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 150 | |
| 151 | /* The address of this is a magic value, a pointer to which is returned by |
| 152 | * SSL_magic_pending_session_ptr(). It allows a session callback to indicate |
| 153 | * that it needs to asynchronously fetch session information. */ |
| 154 | static const char g_pending_session_magic = 0; |
| 155 | |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 156 | static CRYPTO_EX_DATA_CLASS g_ex_data_class = |
| 157 | CRYPTO_EX_DATA_CLASS_INIT_WITH_APP_DATA; |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 158 | |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 159 | static void SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *session); |
| 160 | static void SSL_SESSION_list_add(SSL_CTX *ctx, SSL_SESSION *session); |
| 161 | static int remove_session_lock(SSL_CTX *ctx, SSL_SESSION *session, int lock); |
| 162 | |
Robert Sloan | 5d62578 | 2017-02-13 09:55:39 -0800 | [diff] [blame] | 163 | SSL_SESSION *ssl_session_new(const SSL_X509_METHOD *x509_method) { |
David Benjamin | 4969cc9 | 2016-04-22 15:02:23 -0400 | [diff] [blame] | 164 | SSL_SESSION *session = OPENSSL_malloc(sizeof(SSL_SESSION)); |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 165 | if (session == NULL) { |
| 166 | OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE); |
| 167 | return 0; |
| 168 | } |
Robert Sloan | 69939df | 2017-01-09 10:53:07 -0800 | [diff] [blame] | 169 | OPENSSL_memset(session, 0, sizeof(SSL_SESSION)); |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 170 | |
Robert Sloan | 5d62578 | 2017-02-13 09:55:39 -0800 | [diff] [blame] | 171 | session->x509_method = x509_method; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 172 | session->verify_result = X509_V_ERR_INVALID_CALL; |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 173 | session->references = 1; |
| 174 | session->timeout = SSL_DEFAULT_SESSION_TIMEOUT; |
Robert Sloan | 4d1ac50 | 2017-02-06 08:36:14 -0800 | [diff] [blame] | 175 | session->auth_timeout = SSL_DEFAULT_SESSION_TIMEOUT; |
Robert Sloan | 7d422bc | 2017-03-06 10:04:29 -0800 | [diff] [blame] | 176 | session->time = time(NULL); |
Adam Langley | 4139edb | 2016-01-13 15:00:54 -0800 | [diff] [blame] | 177 | CRYPTO_new_ex_data(&session->ex_data); |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 178 | return session; |
| 179 | } |
| 180 | |
Robert Sloan | 5d62578 | 2017-02-13 09:55:39 -0800 | [diff] [blame] | 181 | SSL_SESSION *SSL_SESSION_new(const SSL_CTX *ctx) { |
| 182 | return ssl_session_new(ctx->x509_method); |
| 183 | } |
| 184 | |
David Benjamin | f0c4a6c | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 185 | SSL_SESSION *SSL_SESSION_dup(SSL_SESSION *session, int dup_flags) { |
Robert Sloan | 5d62578 | 2017-02-13 09:55:39 -0800 | [diff] [blame] | 186 | SSL_SESSION *new_session = ssl_session_new(session->x509_method); |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 187 | if (new_session == NULL) { |
| 188 | goto err; |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 189 | } |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 190 | |
Steven Valdez | e7531f0 | 2016-12-14 13:29:57 -0500 | [diff] [blame] | 191 | new_session->is_server = session->is_server; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 192 | new_session->ssl_version = session->ssl_version; |
David Benjamin | f0c4a6c | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 193 | new_session->sid_ctx_length = session->sid_ctx_length; |
Robert Sloan | 69939df | 2017-01-09 10:53:07 -0800 | [diff] [blame] | 194 | OPENSSL_memcpy(new_session->sid_ctx, session->sid_ctx, session->sid_ctx_length); |
David Benjamin | f0c4a6c | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 195 | |
| 196 | /* Copy the key material. */ |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 197 | new_session->master_key_length = session->master_key_length; |
Robert Sloan | 69939df | 2017-01-09 10:53:07 -0800 | [diff] [blame] | 198 | OPENSSL_memcpy(new_session->master_key, session->master_key, |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 199 | session->master_key_length); |
David Benjamin | f0c4a6c | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 200 | new_session->cipher = session->cipher; |
| 201 | |
| 202 | /* Copy authentication state. */ |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 203 | if (session->psk_identity != NULL) { |
| 204 | new_session->psk_identity = BUF_strdup(session->psk_identity); |
| 205 | if (new_session->psk_identity == NULL) { |
| 206 | goto err; |
| 207 | } |
| 208 | } |
Steven Valdez | e7531f0 | 2016-12-14 13:29:57 -0500 | [diff] [blame] | 209 | if (session->certs != NULL) { |
| 210 | new_session->certs = sk_CRYPTO_BUFFER_new_null(); |
| 211 | if (new_session->certs == NULL) { |
| 212 | goto err; |
| 213 | } |
| 214 | for (size_t i = 0; i < sk_CRYPTO_BUFFER_num(session->certs); i++) { |
| 215 | CRYPTO_BUFFER *buffer = sk_CRYPTO_BUFFER_value(session->certs, i); |
| 216 | if (!sk_CRYPTO_BUFFER_push(new_session->certs, buffer)) { |
| 217 | goto err; |
| 218 | } |
| 219 | CRYPTO_BUFFER_up_ref(buffer); |
| 220 | } |
| 221 | } |
Robert Sloan | 5d62578 | 2017-02-13 09:55:39 -0800 | [diff] [blame] | 222 | |
| 223 | if (!session->x509_method->session_dup(new_session, session)) { |
| 224 | goto err; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 225 | } |
Robert Sloan | 5d62578 | 2017-02-13 09:55:39 -0800 | [diff] [blame] | 226 | |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 227 | new_session->verify_result = session->verify_result; |
David Benjamin | f0c4a6c | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 228 | |
| 229 | new_session->ocsp_response_length = session->ocsp_response_length; |
| 230 | if (session->ocsp_response != NULL) { |
| 231 | new_session->ocsp_response = BUF_memdup(session->ocsp_response, |
| 232 | session->ocsp_response_length); |
| 233 | if (new_session->ocsp_response == NULL) { |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 234 | goto err; |
| 235 | } |
| 236 | } |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 237 | |
| 238 | new_session->tlsext_signed_cert_timestamp_list_length = |
| 239 | session->tlsext_signed_cert_timestamp_list_length; |
| 240 | if (session->tlsext_signed_cert_timestamp_list != NULL) { |
| 241 | new_session->tlsext_signed_cert_timestamp_list = |
| 242 | BUF_memdup(session->tlsext_signed_cert_timestamp_list, |
| 243 | session->tlsext_signed_cert_timestamp_list_length); |
| 244 | if (new_session->tlsext_signed_cert_timestamp_list == NULL) { |
| 245 | goto err; |
| 246 | } |
| 247 | } |
David Benjamin | f0c4a6c | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 248 | |
Robert Sloan | 69939df | 2017-01-09 10:53:07 -0800 | [diff] [blame] | 249 | OPENSSL_memcpy(new_session->peer_sha256, session->peer_sha256, |
| 250 | SHA256_DIGEST_LENGTH); |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 251 | new_session->peer_sha256_valid = session->peer_sha256_valid; |
David Benjamin | f0c4a6c | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 252 | |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 253 | if (session->tlsext_hostname != NULL) { |
| 254 | new_session->tlsext_hostname = BUF_strdup(session->tlsext_hostname); |
| 255 | if (new_session->tlsext_hostname == NULL) { |
| 256 | goto err; |
| 257 | } |
| 258 | } |
| 259 | |
Steven Valdez | e7531f0 | 2016-12-14 13:29:57 -0500 | [diff] [blame] | 260 | new_session->peer_signature_algorithm = session->peer_signature_algorithm; |
| 261 | |
Steven Valdez | bb1ceac | 2016-10-07 10:34:51 -0400 | [diff] [blame] | 262 | new_session->timeout = session->timeout; |
Robert Sloan | 4d1ac50 | 2017-02-06 08:36:14 -0800 | [diff] [blame] | 263 | new_session->auth_timeout = session->auth_timeout; |
Steven Valdez | bb1ceac | 2016-10-07 10:34:51 -0400 | [diff] [blame] | 264 | new_session->time = session->time; |
| 265 | |
David Benjamin | f0c4a6c | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 266 | /* Copy non-authentication connection properties. */ |
| 267 | if (dup_flags & SSL_SESSION_INCLUDE_NONAUTH) { |
| 268 | new_session->session_id_length = session->session_id_length; |
Robert Sloan | 69939df | 2017-01-09 10:53:07 -0800 | [diff] [blame] | 269 | OPENSSL_memcpy(new_session->session_id, session->session_id, |
| 270 | session->session_id_length); |
David Benjamin | f0c4a6c | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 271 | |
Steven Valdez | e7531f0 | 2016-12-14 13:29:57 -0500 | [diff] [blame] | 272 | new_session->group_id = session->group_id; |
David Benjamin | f0c4a6c | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 273 | |
Robert Sloan | 69939df | 2017-01-09 10:53:07 -0800 | [diff] [blame] | 274 | OPENSSL_memcpy(new_session->original_handshake_hash, |
| 275 | session->original_handshake_hash, |
| 276 | session->original_handshake_hash_len); |
David Benjamin | f0c4a6c | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 277 | new_session->original_handshake_hash_len = |
| 278 | session->original_handshake_hash_len; |
| 279 | new_session->tlsext_tick_lifetime_hint = session->tlsext_tick_lifetime_hint; |
David Benjamin | f0c4a6c | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 280 | new_session->ticket_age_add = session->ticket_age_add; |
Robert Sloan | 69939df | 2017-01-09 10:53:07 -0800 | [diff] [blame] | 281 | new_session->ticket_max_early_data = session->ticket_max_early_data; |
David Benjamin | f0c4a6c | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 282 | new_session->extended_master_secret = session->extended_master_secret; |
Robert Sloan | a94fe05 | 2017-02-21 08:49:28 -0800 | [diff] [blame] | 283 | |
| 284 | if (session->early_alpn != NULL) { |
| 285 | new_session->early_alpn = |
| 286 | BUF_memdup(session->early_alpn, session->early_alpn_len); |
| 287 | if (new_session->early_alpn == NULL) { |
| 288 | goto err; |
| 289 | } |
| 290 | } |
| 291 | new_session->early_alpn_len = session->early_alpn_len; |
David Benjamin | f0c4a6c | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 292 | } |
| 293 | |
| 294 | /* Copy the ticket. */ |
| 295 | if (dup_flags & SSL_SESSION_INCLUDE_TICKET) { |
| 296 | if (session->tlsext_tick != NULL) { |
| 297 | new_session->tlsext_tick = |
| 298 | BUF_memdup(session->tlsext_tick, session->tlsext_ticklen); |
| 299 | if (new_session->tlsext_tick == NULL) { |
| 300 | goto err; |
| 301 | } |
| 302 | } |
| 303 | new_session->tlsext_ticklen = session->tlsext_ticklen; |
| 304 | } |
| 305 | |
| 306 | /* The new_session does not get a copy of the ex_data. */ |
| 307 | |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 308 | new_session->not_resumable = 1; |
| 309 | return new_session; |
| 310 | |
| 311 | err: |
| 312 | SSL_SESSION_free(new_session); |
| 313 | OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE); |
| 314 | return 0; |
| 315 | } |
| 316 | |
Robert Sloan | 4d1ac50 | 2017-02-06 08:36:14 -0800 | [diff] [blame] | 317 | void ssl_session_rebase_time(SSL *ssl, SSL_SESSION *session) { |
Robert Sloan | 7d422bc | 2017-03-06 10:04:29 -0800 | [diff] [blame] | 318 | struct OPENSSL_timeval now; |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 319 | ssl_get_current_time(ssl, &now); |
| 320 | |
Robert Sloan | 7d422bc | 2017-03-06 10:04:29 -0800 | [diff] [blame] | 321 | /* To avoid overflows and underflows, if we've gone back in time, update the |
| 322 | * time, but mark the session expired. */ |
| 323 | if (session->time > now.tv_sec) { |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 324 | session->time = now.tv_sec; |
| 325 | session->timeout = 0; |
Robert Sloan | 4d1ac50 | 2017-02-06 08:36:14 -0800 | [diff] [blame] | 326 | session->auth_timeout = 0; |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 327 | return; |
| 328 | } |
| 329 | |
Robert Sloan | 4d1ac50 | 2017-02-06 08:36:14 -0800 | [diff] [blame] | 330 | /* Adjust the session time and timeouts. If the session has already expired, |
| 331 | * clamp the timeouts at zero. */ |
Robert Sloan | 7d422bc | 2017-03-06 10:04:29 -0800 | [diff] [blame] | 332 | uint64_t delta = now.tv_sec - session->time; |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 333 | session->time = now.tv_sec; |
| 334 | if (session->timeout < delta) { |
| 335 | session->timeout = 0; |
| 336 | } else { |
| 337 | session->timeout -= delta; |
| 338 | } |
Robert Sloan | 4d1ac50 | 2017-02-06 08:36:14 -0800 | [diff] [blame] | 339 | if (session->auth_timeout < delta) { |
| 340 | session->auth_timeout = 0; |
| 341 | } else { |
| 342 | session->auth_timeout -= delta; |
| 343 | } |
| 344 | } |
| 345 | |
Robert Sloan | 7d422bc | 2017-03-06 10:04:29 -0800 | [diff] [blame] | 346 | void ssl_session_renew_timeout(SSL *ssl, SSL_SESSION *session, |
| 347 | uint32_t timeout) { |
Robert Sloan | 4d1ac50 | 2017-02-06 08:36:14 -0800 | [diff] [blame] | 348 | /* Rebase the timestamp relative to the current time so |timeout| is measured |
| 349 | * correctly. */ |
| 350 | ssl_session_rebase_time(ssl, session); |
| 351 | |
| 352 | if (session->timeout > timeout) { |
| 353 | return; |
| 354 | } |
| 355 | |
| 356 | session->timeout = timeout; |
| 357 | if (session->timeout > session->auth_timeout) { |
| 358 | session->timeout = session->auth_timeout; |
| 359 | } |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 360 | } |
| 361 | |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 362 | int SSL_SESSION_up_ref(SSL_SESSION *session) { |
| 363 | CRYPTO_refcount_inc(&session->references); |
| 364 | return 1; |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 365 | } |
| 366 | |
| 367 | void SSL_SESSION_free(SSL_SESSION *session) { |
| 368 | if (session == NULL || |
| 369 | !CRYPTO_refcount_dec_and_test_zero(&session->references)) { |
| 370 | return; |
| 371 | } |
| 372 | |
| 373 | CRYPTO_free_ex_data(&g_ex_data_class, session, &session->ex_data); |
| 374 | |
| 375 | OPENSSL_cleanse(session->master_key, sizeof(session->master_key)); |
| 376 | OPENSSL_cleanse(session->session_id, sizeof(session->session_id)); |
Steven Valdez | e7531f0 | 2016-12-14 13:29:57 -0500 | [diff] [blame] | 377 | sk_CRYPTO_BUFFER_pop_free(session->certs, CRYPTO_BUFFER_free); |
Robert Sloan | 5d62578 | 2017-02-13 09:55:39 -0800 | [diff] [blame] | 378 | session->x509_method->session_clear(session); |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 379 | OPENSSL_free(session->tlsext_hostname); |
| 380 | OPENSSL_free(session->tlsext_tick); |
| 381 | OPENSSL_free(session->tlsext_signed_cert_timestamp_list); |
| 382 | OPENSSL_free(session->ocsp_response); |
| 383 | OPENSSL_free(session->psk_identity); |
Robert Sloan | a94fe05 | 2017-02-21 08:49:28 -0800 | [diff] [blame] | 384 | OPENSSL_free(session->early_alpn); |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 385 | OPENSSL_cleanse(session, sizeof(*session)); |
| 386 | OPENSSL_free(session); |
| 387 | } |
| 388 | |
| 389 | const uint8_t *SSL_SESSION_get_id(const SSL_SESSION *session, |
| 390 | unsigned *out_len) { |
| 391 | if (out_len != NULL) { |
| 392 | *out_len = session->session_id_length; |
| 393 | } |
| 394 | return session->session_id; |
| 395 | } |
| 396 | |
Robert Sloan | 7d422bc | 2017-03-06 10:04:29 -0800 | [diff] [blame] | 397 | uint32_t SSL_SESSION_get_timeout(const SSL_SESSION *session) { |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 398 | return session->timeout; |
| 399 | } |
| 400 | |
Robert Sloan | 7d422bc | 2017-03-06 10:04:29 -0800 | [diff] [blame] | 401 | uint64_t SSL_SESSION_get_time(const SSL_SESSION *session) { |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 402 | if (session == NULL) { |
| 403 | /* NULL should crash, but silently accept it here for compatibility. */ |
| 404 | return 0; |
| 405 | } |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 406 | return session->time; |
| 407 | } |
| 408 | |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 409 | X509 *SSL_SESSION_get0_peer(const SSL_SESSION *session) { |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 410 | return session->x509_peer; |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 411 | } |
| 412 | |
David Benjamin | 4969cc9 | 2016-04-22 15:02:23 -0400 | [diff] [blame] | 413 | size_t SSL_SESSION_get_master_key(const SSL_SESSION *session, uint8_t *out, |
| 414 | size_t max_out) { |
| 415 | /* TODO(davidben): Fix master_key_length's type and remove these casts. */ |
| 416 | if (max_out == 0) { |
| 417 | return (size_t)session->master_key_length; |
| 418 | } |
| 419 | if (max_out > (size_t)session->master_key_length) { |
| 420 | max_out = (size_t)session->master_key_length; |
| 421 | } |
Robert Sloan | 69939df | 2017-01-09 10:53:07 -0800 | [diff] [blame] | 422 | OPENSSL_memcpy(out, session->master_key, max_out); |
David Benjamin | 4969cc9 | 2016-04-22 15:02:23 -0400 | [diff] [blame] | 423 | return max_out; |
| 424 | } |
| 425 | |
Robert Sloan | 7d422bc | 2017-03-06 10:04:29 -0800 | [diff] [blame] | 426 | uint64_t SSL_SESSION_set_time(SSL_SESSION *session, uint64_t time) { |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 427 | if (session == NULL) { |
| 428 | return 0; |
| 429 | } |
| 430 | |
| 431 | session->time = time; |
| 432 | return time; |
| 433 | } |
| 434 | |
Robert Sloan | 7d422bc | 2017-03-06 10:04:29 -0800 | [diff] [blame] | 435 | uint32_t SSL_SESSION_set_timeout(SSL_SESSION *session, uint32_t timeout) { |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 436 | if (session == NULL) { |
| 437 | return 0; |
| 438 | } |
| 439 | |
| 440 | session->timeout = timeout; |
Robert Sloan | 4d1ac50 | 2017-02-06 08:36:14 -0800 | [diff] [blame] | 441 | session->auth_timeout = timeout; |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 442 | return 1; |
| 443 | } |
| 444 | |
| 445 | int SSL_SESSION_set1_id_context(SSL_SESSION *session, const uint8_t *sid_ctx, |
David Benjamin | 1b24967 | 2016-12-06 18:25:50 -0500 | [diff] [blame] | 446 | size_t sid_ctx_len) { |
| 447 | if (sid_ctx_len > sizeof(session->sid_ctx)) { |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 448 | OPENSSL_PUT_ERROR(SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); |
| 449 | return 0; |
| 450 | } |
| 451 | |
David Benjamin | 1b24967 | 2016-12-06 18:25:50 -0500 | [diff] [blame] | 452 | assert(sizeof(session->sid_ctx) < 256); |
| 453 | session->sid_ctx_length = (uint8_t)sid_ctx_len; |
Robert Sloan | 69939df | 2017-01-09 10:53:07 -0800 | [diff] [blame] | 454 | OPENSSL_memcpy(session->sid_ctx, sid_ctx, sid_ctx_len); |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 455 | |
| 456 | return 1; |
| 457 | } |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 458 | |
| 459 | SSL_SESSION *SSL_magic_pending_session_ptr(void) { |
| 460 | return (SSL_SESSION *)&g_pending_session_magic; |
| 461 | } |
| 462 | |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 463 | SSL_SESSION *SSL_get_session(const SSL *ssl) { |
| 464 | /* Once the handshake completes we return the established session. Otherwise |
| 465 | * we return the intermediate session, either |session| (for resumption) or |
| 466 | * |new_session| if doing a full handshake. */ |
| 467 | if (!SSL_in_init(ssl)) { |
| 468 | return ssl->s3->established_session; |
| 469 | } |
Robert Sloan | a94fe05 | 2017-02-21 08:49:28 -0800 | [diff] [blame] | 470 | if (ssl->s3->hs->new_session != NULL) { |
| 471 | return ssl->s3->hs->new_session; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 472 | } |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 473 | return ssl->session; |
| 474 | } |
| 475 | |
| 476 | SSL_SESSION *SSL_get1_session(SSL *ssl) { |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 477 | SSL_SESSION *ret = SSL_get_session(ssl); |
| 478 | if (ret != NULL) { |
| 479 | SSL_SESSION_up_ref(ret); |
| 480 | } |
| 481 | return ret; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 482 | } |
| 483 | |
Adam Langley | 4139edb | 2016-01-13 15:00:54 -0800 | [diff] [blame] | 484 | int SSL_SESSION_get_ex_new_index(long argl, void *argp, |
| 485 | CRYPTO_EX_unused *unused, |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 486 | CRYPTO_EX_dup *dup_func, |
| 487 | CRYPTO_EX_free *free_func) { |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 488 | int index; |
Adam Langley | 4139edb | 2016-01-13 15:00:54 -0800 | [diff] [blame] | 489 | if (!CRYPTO_get_ex_new_index(&g_ex_data_class, &index, argl, argp, dup_func, |
| 490 | free_func)) { |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 491 | return -1; |
| 492 | } |
| 493 | return index; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 494 | } |
| 495 | |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 496 | int SSL_SESSION_set_ex_data(SSL_SESSION *session, int idx, void *arg) { |
| 497 | return CRYPTO_set_ex_data(&session->ex_data, idx, arg); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 498 | } |
| 499 | |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 500 | void *SSL_SESSION_get_ex_data(const SSL_SESSION *session, int idx) { |
| 501 | return CRYPTO_get_ex_data(&session->ex_data, idx); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 502 | } |
| 503 | |
Robert Sloan | 5d62578 | 2017-02-13 09:55:39 -0800 | [diff] [blame] | 504 | const EVP_MD *SSL_SESSION_get_digest(const SSL_SESSION *session, |
| 505 | const SSL *ssl) { |
| 506 | uint16_t version; |
| 507 | if (!ssl->method->version_from_wire(&version, session->ssl_version)) { |
| 508 | return NULL; |
| 509 | } |
| 510 | |
| 511 | return ssl_get_handshake_digest(session->cipher->algorithm_prf, version); |
| 512 | } |
| 513 | |
David Benjamin | 1b24967 | 2016-12-06 18:25:50 -0500 | [diff] [blame] | 514 | int ssl_get_new_session(SSL_HANDSHAKE *hs, int is_server) { |
| 515 | SSL *const ssl = hs->ssl; |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 516 | if (ssl->mode & SSL_MODE_NO_SESSION_CREATION) { |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 517 | OPENSSL_PUT_ERROR(SSL, SSL_R_SESSION_MAY_NOT_BE_CREATED); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 518 | return 0; |
| 519 | } |
| 520 | |
Robert Sloan | 5d62578 | 2017-02-13 09:55:39 -0800 | [diff] [blame] | 521 | SSL_SESSION *session = ssl_session_new(ssl->ctx->x509_method); |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 522 | if (session == NULL) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 523 | return 0; |
| 524 | } |
| 525 | |
Steven Valdez | e7531f0 | 2016-12-14 13:29:57 -0500 | [diff] [blame] | 526 | session->is_server = is_server; |
| 527 | session->ssl_version = ssl->version; |
| 528 | |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 529 | /* Fill in the time from the |SSL_CTX|'s clock. */ |
Robert Sloan | 7d422bc | 2017-03-06 10:04:29 -0800 | [diff] [blame] | 530 | struct OPENSSL_timeval now; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 531 | ssl_get_current_time(ssl, &now); |
| 532 | session->time = now.tv_sec; |
| 533 | |
Robert Sloan | 4d1ac50 | 2017-02-06 08:36:14 -0800 | [diff] [blame] | 534 | uint16_t version = ssl3_protocol_version(ssl); |
| 535 | if (version >= TLS1_3_VERSION) { |
| 536 | /* TLS 1.3 uses tickets as authenticators, so we are willing to use them for |
| 537 | * longer. */ |
Robert Sloan | 1c9db53 | 2017-03-13 08:03:59 -0700 | [diff] [blame] | 538 | session->timeout = ssl->session_ctx->session_psk_dhe_timeout; |
Robert Sloan | 4d1ac50 | 2017-02-06 08:36:14 -0800 | [diff] [blame] | 539 | session->auth_timeout = SSL_DEFAULT_SESSION_AUTH_TIMEOUT; |
| 540 | } else { |
| 541 | /* TLS 1.2 resumption does not incorporate new key material, so we use a |
| 542 | * much shorter timeout. */ |
Robert Sloan | 1c9db53 | 2017-03-13 08:03:59 -0700 | [diff] [blame] | 543 | session->timeout = ssl->session_ctx->session_timeout; |
| 544 | session->auth_timeout = ssl->session_ctx->session_timeout; |
Robert Sloan | 4d1ac50 | 2017-02-06 08:36:14 -0800 | [diff] [blame] | 545 | } |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 546 | |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 547 | if (is_server) { |
Robert Sloan | 4d1ac50 | 2017-02-06 08:36:14 -0800 | [diff] [blame] | 548 | if (hs->ticket_expected || version >= TLS1_3_VERSION) { |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 549 | /* Don't set session IDs for sessions resumed with tickets. This will keep |
| 550 | * them out of the session cache. */ |
| 551 | session->session_id_length = 0; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 552 | } else { |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 553 | session->session_id_length = SSL3_SSL_SESSION_ID_LENGTH; |
| 554 | if (!RAND_bytes(session->session_id, session->session_id_length)) { |
| 555 | goto err; |
| 556 | } |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 557 | } |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 558 | } else { |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 559 | session->session_id_length = 0; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 560 | } |
| 561 | |
Robert Sloan | a94fe05 | 2017-02-21 08:49:28 -0800 | [diff] [blame] | 562 | if (ssl->cert->sid_ctx_length > sizeof(session->sid_ctx)) { |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 563 | OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR); |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 564 | goto err; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 565 | } |
Robert Sloan | a94fe05 | 2017-02-21 08:49:28 -0800 | [diff] [blame] | 566 | OPENSSL_memcpy(session->sid_ctx, ssl->cert->sid_ctx, |
| 567 | ssl->cert->sid_ctx_length); |
| 568 | session->sid_ctx_length = ssl->cert->sid_ctx_length; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 569 | |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 570 | /* The session is marked not resumable until it is completely filled in. */ |
| 571 | session->not_resumable = 1; |
| 572 | session->verify_result = X509_V_ERR_INVALID_CALL; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 573 | |
Robert Sloan | a94fe05 | 2017-02-21 08:49:28 -0800 | [diff] [blame] | 574 | SSL_SESSION_free(hs->new_session); |
| 575 | hs->new_session = session; |
David Benjamin | 7c0d06c | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 576 | ssl_set_session(ssl, NULL); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 577 | return 1; |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 578 | |
| 579 | err: |
| 580 | SSL_SESSION_free(session); |
| 581 | return 0; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 582 | } |
| 583 | |
Robert Sloan | 1c9db53 | 2017-03-13 08:03:59 -0700 | [diff] [blame] | 584 | static int ssl_encrypt_ticket_with_cipher_ctx(SSL *ssl, CBB *out, |
| 585 | const uint8_t *session_buf, |
| 586 | size_t session_len) { |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 587 | int ret = 0; |
| 588 | |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 589 | EVP_CIPHER_CTX ctx; |
| 590 | EVP_CIPHER_CTX_init(&ctx); |
| 591 | HMAC_CTX hctx; |
| 592 | HMAC_CTX_init(&hctx); |
| 593 | |
| 594 | /* If the session is too long, emit a dummy value rather than abort the |
| 595 | * connection. */ |
| 596 | static const size_t kMaxTicketOverhead = |
| 597 | 16 + EVP_MAX_IV_LENGTH + EVP_MAX_BLOCK_LENGTH + EVP_MAX_MD_SIZE; |
| 598 | if (session_len > 0xffff - kMaxTicketOverhead) { |
| 599 | static const char kTicketPlaceholder[] = "TICKET TOO LARGE"; |
| 600 | if (CBB_add_bytes(out, (const uint8_t *)kTicketPlaceholder, |
| 601 | strlen(kTicketPlaceholder))) { |
| 602 | ret = 1; |
| 603 | } |
| 604 | goto err; |
| 605 | } |
| 606 | |
| 607 | /* Initialize HMAC and cipher contexts. If callback present it does all the |
| 608 | * work otherwise use generated values from parent ctx. */ |
Robert Sloan | 1c9db53 | 2017-03-13 08:03:59 -0700 | [diff] [blame] | 609 | SSL_CTX *tctx = ssl->session_ctx; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 610 | uint8_t iv[EVP_MAX_IV_LENGTH]; |
| 611 | uint8_t key_name[16]; |
| 612 | if (tctx->tlsext_ticket_key_cb != NULL) { |
| 613 | if (tctx->tlsext_ticket_key_cb(ssl, key_name, iv, &ctx, &hctx, |
| 614 | 1 /* encrypt */) < 0) { |
| 615 | goto err; |
| 616 | } |
| 617 | } else { |
| 618 | if (!RAND_bytes(iv, 16) || |
| 619 | !EVP_EncryptInit_ex(&ctx, EVP_aes_128_cbc(), NULL, |
| 620 | tctx->tlsext_tick_aes_key, iv) || |
| 621 | !HMAC_Init_ex(&hctx, tctx->tlsext_tick_hmac_key, 16, tlsext_tick_md(), |
| 622 | NULL)) { |
| 623 | goto err; |
| 624 | } |
Robert Sloan | 69939df | 2017-01-09 10:53:07 -0800 | [diff] [blame] | 625 | OPENSSL_memcpy(key_name, tctx->tlsext_tick_key_name, 16); |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 626 | } |
| 627 | |
| 628 | uint8_t *ptr; |
| 629 | if (!CBB_add_bytes(out, key_name, 16) || |
| 630 | !CBB_add_bytes(out, iv, EVP_CIPHER_CTX_iv_length(&ctx)) || |
| 631 | !CBB_reserve(out, &ptr, session_len + EVP_MAX_BLOCK_LENGTH)) { |
| 632 | goto err; |
| 633 | } |
| 634 | |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 635 | size_t total = 0; |
Steven Valdez | bb1ceac | 2016-10-07 10:34:51 -0400 | [diff] [blame] | 636 | #if defined(BORINGSSL_UNSAFE_FUZZER_MODE) |
Robert Sloan | 69939df | 2017-01-09 10:53:07 -0800 | [diff] [blame] | 637 | OPENSSL_memcpy(ptr, session_buf, session_len); |
Steven Valdez | bb1ceac | 2016-10-07 10:34:51 -0400 | [diff] [blame] | 638 | total = session_len; |
| 639 | #else |
| 640 | int len; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 641 | if (!EVP_EncryptUpdate(&ctx, ptr + total, &len, session_buf, session_len)) { |
| 642 | goto err; |
| 643 | } |
| 644 | total += len; |
| 645 | if (!EVP_EncryptFinal_ex(&ctx, ptr + total, &len)) { |
| 646 | goto err; |
| 647 | } |
| 648 | total += len; |
Steven Valdez | bb1ceac | 2016-10-07 10:34:51 -0400 | [diff] [blame] | 649 | #endif |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 650 | if (!CBB_did_write(out, total)) { |
| 651 | goto err; |
| 652 | } |
| 653 | |
| 654 | unsigned hlen; |
| 655 | if (!HMAC_Update(&hctx, CBB_data(out), CBB_len(out)) || |
| 656 | !CBB_reserve(out, &ptr, EVP_MAX_MD_SIZE) || |
| 657 | !HMAC_Final(&hctx, ptr, &hlen) || |
| 658 | !CBB_did_write(out, hlen)) { |
| 659 | goto err; |
| 660 | } |
| 661 | |
| 662 | ret = 1; |
| 663 | |
| 664 | err: |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 665 | EVP_CIPHER_CTX_cleanup(&ctx); |
| 666 | HMAC_CTX_cleanup(&hctx); |
| 667 | return ret; |
| 668 | } |
| 669 | |
Robert Sloan | 1c9db53 | 2017-03-13 08:03:59 -0700 | [diff] [blame] | 670 | static int ssl_encrypt_ticket_with_method(SSL *ssl, CBB *out, |
| 671 | const uint8_t *session_buf, |
| 672 | size_t session_len) { |
| 673 | const SSL_TICKET_AEAD_METHOD *method = ssl->session_ctx->ticket_aead_method; |
| 674 | const size_t max_overhead = method->max_overhead(ssl); |
| 675 | const size_t max_out = session_len + max_overhead; |
| 676 | if (max_out < max_overhead) { |
| 677 | OPENSSL_PUT_ERROR(SSL, ERR_R_OVERFLOW); |
| 678 | return 0; |
| 679 | } |
| 680 | |
| 681 | uint8_t *ptr; |
| 682 | if (!CBB_reserve(out, &ptr, max_out)) { |
| 683 | return 0; |
| 684 | } |
| 685 | |
| 686 | size_t out_len; |
| 687 | if (!method->seal(ssl, ptr, &out_len, max_out, session_buf, session_len)) { |
| 688 | OPENSSL_PUT_ERROR(SSL, SSL_R_TICKET_ENCRYPTION_FAILED); |
| 689 | return 0; |
| 690 | } |
| 691 | |
| 692 | if (!CBB_did_write(out, out_len)) { |
| 693 | return 0; |
| 694 | } |
| 695 | |
| 696 | return 1; |
| 697 | } |
| 698 | |
| 699 | int ssl_encrypt_ticket(SSL *ssl, CBB *out, const SSL_SESSION *session) { |
| 700 | /* Serialize the SSL_SESSION to be encoded into the ticket. */ |
| 701 | uint8_t *session_buf = NULL; |
| 702 | size_t session_len; |
| 703 | if (!SSL_SESSION_to_bytes_for_ticket(session, &session_buf, &session_len)) { |
| 704 | return -1; |
| 705 | } |
| 706 | |
| 707 | int ret = 0; |
| 708 | if (ssl->session_ctx->ticket_aead_method) { |
| 709 | ret = ssl_encrypt_ticket_with_method(ssl, out, session_buf, session_len); |
| 710 | } else { |
| 711 | ret = |
| 712 | ssl_encrypt_ticket_with_cipher_ctx(ssl, out, session_buf, session_len); |
| 713 | } |
| 714 | |
| 715 | OPENSSL_free(session_buf); |
| 716 | return ret; |
| 717 | } |
| 718 | |
David Benjamin | f0c4a6c | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 719 | int ssl_session_is_context_valid(const SSL *ssl, const SSL_SESSION *session) { |
| 720 | if (session == NULL) { |
| 721 | return 0; |
| 722 | } |
| 723 | |
Robert Sloan | a94fe05 | 2017-02-21 08:49:28 -0800 | [diff] [blame] | 724 | return session->sid_ctx_length == ssl->cert->sid_ctx_length && |
| 725 | OPENSSL_memcmp(session->sid_ctx, ssl->cert->sid_ctx, |
| 726 | ssl->cert->sid_ctx_length) == 0; |
David Benjamin | f0c4a6c | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 727 | } |
| 728 | |
| 729 | int ssl_session_is_time_valid(const SSL *ssl, const SSL_SESSION *session) { |
| 730 | if (session == NULL) { |
| 731 | return 0; |
| 732 | } |
| 733 | |
Robert Sloan | 7d422bc | 2017-03-06 10:04:29 -0800 | [diff] [blame] | 734 | struct OPENSSL_timeval now; |
David Benjamin | f0c4a6c | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 735 | ssl_get_current_time(ssl, &now); |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 736 | |
| 737 | /* Reject tickets from the future to avoid underflow. */ |
Robert Sloan | 7d422bc | 2017-03-06 10:04:29 -0800 | [diff] [blame] | 738 | if (now.tv_sec < session->time) { |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 739 | return 0; |
| 740 | } |
| 741 | |
Robert Sloan | 7d422bc | 2017-03-06 10:04:29 -0800 | [diff] [blame] | 742 | return session->timeout > now.tv_sec - session->time; |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 743 | } |
| 744 | |
Robert Sloan | a94fe05 | 2017-02-21 08:49:28 -0800 | [diff] [blame] | 745 | int ssl_session_is_resumable(const SSL_HANDSHAKE *hs, |
| 746 | const SSL_SESSION *session) { |
| 747 | const SSL *const ssl = hs->ssl; |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 748 | return ssl_session_is_context_valid(ssl, session) && |
Steven Valdez | e7531f0 | 2016-12-14 13:29:57 -0500 | [diff] [blame] | 749 | /* The session must have been created by the same type of end point as |
| 750 | * we're now using it with. */ |
Robert Sloan | a94fe05 | 2017-02-21 08:49:28 -0800 | [diff] [blame] | 751 | ssl->server == session->is_server && |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 752 | /* The session must not be expired. */ |
| 753 | ssl_session_is_time_valid(ssl, session) && |
| 754 | /* Only resume if the session's version matches the negotiated |
| 755 | * version. */ |
| 756 | ssl->version == session->ssl_version && |
| 757 | /* Only resume if the session's cipher matches the negotiated one. */ |
Robert Sloan | a94fe05 | 2017-02-21 08:49:28 -0800 | [diff] [blame] | 758 | hs->new_cipher == session->cipher && |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 759 | /* If the session contains a client certificate (either the full |
| 760 | * certificate or just the hash) then require that the form of the |
| 761 | * certificate matches the current configuration. */ |
Robert Sloan | 5d62578 | 2017-02-13 09:55:39 -0800 | [diff] [blame] | 762 | ((sk_CRYPTO_BUFFER_num(session->certs) == 0 && |
| 763 | !session->peer_sha256_valid) || |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 764 | session->peer_sha256_valid == |
| 765 | ssl->retain_only_sha256_of_client_certs); |
David Benjamin | f0c4a6c | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 766 | } |
| 767 | |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 768 | /* ssl_lookup_session looks up |session_id| in the session cache and sets |
| 769 | * |*out_session| to an |SSL_SESSION| object if found. The caller takes |
| 770 | * ownership of the result. */ |
| 771 | static enum ssl_session_result_t ssl_lookup_session( |
| 772 | SSL *ssl, SSL_SESSION **out_session, const uint8_t *session_id, |
| 773 | size_t session_id_len) { |
| 774 | *out_session = NULL; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 775 | |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 776 | if (session_id_len == 0 || session_id_len > SSL_MAX_SSL_SESSION_ID_LENGTH) { |
| 777 | return ssl_session_success; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 778 | } |
| 779 | |
David Benjamin | f0c4a6c | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 780 | SSL_SESSION *session = NULL; |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 781 | /* Try the internal cache, if it exists. */ |
Robert Sloan | 1c9db53 | 2017-03-13 08:03:59 -0700 | [diff] [blame] | 782 | if (!(ssl->session_ctx->session_cache_mode & |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 783 | SSL_SESS_CACHE_NO_INTERNAL_LOOKUP)) { |
| 784 | SSL_SESSION data; |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 785 | data.ssl_version = ssl->version; |
| 786 | data.session_id_length = session_id_len; |
Robert Sloan | 69939df | 2017-01-09 10:53:07 -0800 | [diff] [blame] | 787 | OPENSSL_memcpy(data.session_id, session_id, session_id_len); |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 788 | |
Robert Sloan | 1c9db53 | 2017-03-13 08:03:59 -0700 | [diff] [blame] | 789 | CRYPTO_MUTEX_lock_read(&ssl->session_ctx->lock); |
| 790 | session = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &data); |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 791 | if (session != NULL) { |
| 792 | SSL_SESSION_up_ref(session); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 793 | } |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 794 | /* TODO(davidben): This should probably move it to the front of the list. */ |
Robert Sloan | 1c9db53 | 2017-03-13 08:03:59 -0700 | [diff] [blame] | 795 | CRYPTO_MUTEX_unlock_read(&ssl->session_ctx->lock); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 796 | } |
| 797 | |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 798 | /* Fall back to the external cache, if it exists. */ |
David Benjamin | f0c4a6c | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 799 | if (session == NULL && |
Robert Sloan | 1c9db53 | 2017-03-13 08:03:59 -0700 | [diff] [blame] | 800 | ssl->session_ctx->get_session_cb != NULL) { |
David Benjamin | f0c4a6c | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 801 | int copy = 1; |
Robert Sloan | 1c9db53 | 2017-03-13 08:03:59 -0700 | [diff] [blame] | 802 | session = ssl->session_ctx->get_session_cb(ssl, (uint8_t *)session_id, |
David Benjamin | f0c4a6c | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 803 | session_id_len, ©); |
| 804 | |
| 805 | if (session == NULL) { |
| 806 | return ssl_session_success; |
| 807 | } |
| 808 | |
| 809 | if (session == SSL_magic_pending_session_ptr()) { |
| 810 | return ssl_session_retry; |
| 811 | } |
| 812 | |
| 813 | /* Increment reference count now if the session callback asks us to do so |
| 814 | * (note that if the session structures returned by the callback are shared |
| 815 | * between threads, it must handle the reference count itself [i.e. copy == |
| 816 | * 0], or things won't be thread-safe). */ |
| 817 | if (copy) { |
| 818 | SSL_SESSION_up_ref(session); |
| 819 | } |
| 820 | |
| 821 | /* Add the externally cached session to the internal cache if necessary. */ |
Robert Sloan | 1c9db53 | 2017-03-13 08:03:59 -0700 | [diff] [blame] | 822 | if (!(ssl->session_ctx->session_cache_mode & |
David Benjamin | f0c4a6c | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 823 | SSL_SESS_CACHE_NO_INTERNAL_STORE)) { |
Robert Sloan | 1c9db53 | 2017-03-13 08:03:59 -0700 | [diff] [blame] | 824 | SSL_CTX_add_session(ssl->session_ctx, session); |
David Benjamin | f0c4a6c | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 825 | } |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 826 | } |
David Benjamin | f0c4a6c | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 827 | |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 828 | if (session != NULL && |
| 829 | !ssl_session_is_time_valid(ssl, session)) { |
David Benjamin | f0c4a6c | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 830 | /* The session was from the cache, so remove it. */ |
Robert Sloan | 1c9db53 | 2017-03-13 08:03:59 -0700 | [diff] [blame] | 831 | SSL_CTX_remove_session(ssl->session_ctx, session); |
David Benjamin | f0c4a6c | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 832 | SSL_SESSION_free(session); |
| 833 | session = NULL; |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 834 | } |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 835 | |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 836 | *out_session = session; |
| 837 | return ssl_session_success; |
| 838 | } |
| 839 | |
| 840 | enum ssl_session_result_t ssl_get_prev_session( |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 841 | SSL *ssl, SSL_SESSION **out_session, int *out_tickets_supported, |
David Benjamin | 1b24967 | 2016-12-06 18:25:50 -0500 | [diff] [blame] | 842 | int *out_renew_ticket, const SSL_CLIENT_HELLO *client_hello) { |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 843 | /* This is used only by servers. */ |
| 844 | assert(ssl->server); |
| 845 | SSL_SESSION *session = NULL; |
David Benjamin | 4969cc9 | 2016-04-22 15:02:23 -0400 | [diff] [blame] | 846 | int renew_ticket = 0; |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 847 | |
| 848 | /* If tickets are disabled, always behave as if no tickets are present. */ |
| 849 | const uint8_t *ticket = NULL; |
| 850 | size_t ticket_len = 0; |
| 851 | const int tickets_supported = |
| 852 | !(SSL_get_options(ssl) & SSL_OP_NO_TICKET) && |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 853 | ssl->version > SSL3_VERSION && |
David Benjamin | 1b24967 | 2016-12-06 18:25:50 -0500 | [diff] [blame] | 854 | SSL_early_callback_ctx_extension_get( |
| 855 | client_hello, TLSEXT_TYPE_session_ticket, &ticket, &ticket_len); |
David Benjamin | 4969cc9 | 2016-04-22 15:02:23 -0400 | [diff] [blame] | 856 | if (tickets_supported && ticket_len > 0) { |
Robert Sloan | 1c9db53 | 2017-03-13 08:03:59 -0700 | [diff] [blame] | 857 | switch (ssl_process_ticket(ssl, &session, &renew_ticket, ticket, ticket_len, |
| 858 | client_hello->session_id, |
| 859 | client_hello->session_id_len)) { |
| 860 | case ssl_ticket_aead_success: |
| 861 | break; |
| 862 | case ssl_ticket_aead_ignore_ticket: |
| 863 | assert(session == NULL); |
| 864 | break; |
| 865 | case ssl_ticket_aead_error: |
| 866 | return ssl_session_error; |
| 867 | case ssl_ticket_aead_retry: |
| 868 | return ssl_session_ticket_retry; |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 869 | } |
| 870 | } else { |
David Benjamin | 4969cc9 | 2016-04-22 15:02:23 -0400 | [diff] [blame] | 871 | /* The client didn't send a ticket, so the session ID is a real ID. */ |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 872 | enum ssl_session_result_t lookup_ret = ssl_lookup_session( |
David Benjamin | 1b24967 | 2016-12-06 18:25:50 -0500 | [diff] [blame] | 873 | ssl, &session, client_hello->session_id, client_hello->session_id_len); |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 874 | if (lookup_ret != ssl_session_success) { |
| 875 | return lookup_ret; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 876 | } |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 877 | } |
| 878 | |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 879 | *out_session = session; |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 880 | *out_tickets_supported = tickets_supported; |
| 881 | *out_renew_ticket = renew_ticket; |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 882 | return ssl_session_success; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 883 | } |
| 884 | |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 885 | int SSL_CTX_add_session(SSL_CTX *ctx, SSL_SESSION *session) { |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 886 | /* Although |session| is inserted into two structures (a doubly-linked list |
| 887 | * and the hash table), |ctx| only takes one reference. */ |
Kenny Root | 03bcf61 | 2015-11-05 20:20:27 +0000 | [diff] [blame] | 888 | SSL_SESSION_up_ref(session); |
Kenny Root | 03bcf61 | 2015-11-05 20:20:27 +0000 | [diff] [blame] | 889 | |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 890 | SSL_SESSION *old_session; |
Adam Langley | f4e4272 | 2015-06-04 17:45:09 -0700 | [diff] [blame] | 891 | CRYPTO_MUTEX_lock_write(&ctx->lock); |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 892 | if (!lh_SSL_SESSION_insert(ctx->sessions, &old_session, session)) { |
David Benjamin | d316cba | 2016-06-02 16:17:39 -0400 | [diff] [blame] | 893 | CRYPTO_MUTEX_unlock_write(&ctx->lock); |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 894 | SSL_SESSION_free(session); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 895 | return 0; |
| 896 | } |
| 897 | |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 898 | if (old_session != NULL) { |
| 899 | if (old_session == session) { |
| 900 | /* |session| was already in the cache. */ |
David Benjamin | d316cba | 2016-06-02 16:17:39 -0400 | [diff] [blame] | 901 | CRYPTO_MUTEX_unlock_write(&ctx->lock); |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 902 | SSL_SESSION_free(old_session); |
| 903 | return 0; |
| 904 | } |
| 905 | |
| 906 | /* There was a session ID collision. |old_session| must be removed from |
| 907 | * the linked list and released. */ |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 908 | SSL_SESSION_list_remove(ctx, old_session); |
| 909 | SSL_SESSION_free(old_session); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 910 | } |
| 911 | |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 912 | SSL_SESSION_list_add(ctx, session); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 913 | |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 914 | /* Enforce any cache size limits. */ |
| 915 | if (SSL_CTX_sess_get_cache_size(ctx) > 0) { |
| 916 | while (SSL_CTX_sess_number(ctx) > SSL_CTX_sess_get_cache_size(ctx)) { |
| 917 | if (!remove_session_lock(ctx, ctx->session_cache_tail, 0)) { |
| 918 | break; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 919 | } |
| 920 | } |
| 921 | } |
| 922 | |
David Benjamin | d316cba | 2016-06-02 16:17:39 -0400 | [diff] [blame] | 923 | CRYPTO_MUTEX_unlock_write(&ctx->lock); |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 924 | return 1; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 925 | } |
| 926 | |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 927 | int SSL_CTX_remove_session(SSL_CTX *ctx, SSL_SESSION *session) { |
| 928 | return remove_session_lock(ctx, session, 1); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 929 | } |
| 930 | |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 931 | static int remove_session_lock(SSL_CTX *ctx, SSL_SESSION *session, int lock) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 932 | int ret = 0; |
| 933 | |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 934 | if (session != NULL && session->session_id_length != 0) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 935 | if (lock) { |
Adam Langley | f4e4272 | 2015-06-04 17:45:09 -0700 | [diff] [blame] | 936 | CRYPTO_MUTEX_lock_write(&ctx->lock); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 937 | } |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 938 | SSL_SESSION *found_session = lh_SSL_SESSION_retrieve(ctx->sessions, |
| 939 | session); |
| 940 | if (found_session == session) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 941 | ret = 1; |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 942 | found_session = lh_SSL_SESSION_delete(ctx->sessions, session); |
| 943 | SSL_SESSION_list_remove(ctx, session); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 944 | } |
| 945 | |
| 946 | if (lock) { |
David Benjamin | d316cba | 2016-06-02 16:17:39 -0400 | [diff] [blame] | 947 | CRYPTO_MUTEX_unlock_write(&ctx->lock); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 948 | } |
| 949 | |
| 950 | if (ret) { |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 951 | found_session->not_resumable = 1; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 952 | if (ctx->remove_session_cb != NULL) { |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 953 | ctx->remove_session_cb(ctx, found_session); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 954 | } |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 955 | SSL_SESSION_free(found_session); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 956 | } |
| 957 | } |
| 958 | |
| 959 | return ret; |
| 960 | } |
| 961 | |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 962 | int SSL_set_session(SSL *ssl, SSL_SESSION *session) { |
David Benjamin | 7c0d06c | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 963 | /* SSL_set_session may only be called before the handshake has started. */ |
Robert Sloan | a94fe05 | 2017-02-21 08:49:28 -0800 | [diff] [blame] | 964 | if (ssl->s3->initial_handshake_complete || |
| 965 | ssl->s3->hs == NULL || |
| 966 | ssl->s3->hs->state != SSL_ST_INIT) { |
David Benjamin | 7c0d06c | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 967 | abort(); |
| 968 | } |
| 969 | |
| 970 | ssl_set_session(ssl, session); |
| 971 | return 1; |
| 972 | } |
| 973 | |
| 974 | void ssl_set_session(SSL *ssl, SSL_SESSION *session) { |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 975 | if (ssl->session == session) { |
David Benjamin | 7c0d06c | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 976 | return; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 977 | } |
| 978 | |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 979 | SSL_SESSION_free(ssl->session); |
| 980 | ssl->session = session; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 981 | if (session != NULL) { |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 982 | SSL_SESSION_up_ref(session); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 983 | } |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 984 | } |
| 985 | |
Robert Sloan | 7d422bc | 2017-03-06 10:04:29 -0800 | [diff] [blame] | 986 | uint32_t SSL_CTX_set_timeout(SSL_CTX *ctx, uint32_t timeout) { |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 987 | if (ctx == NULL) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 988 | return 0; |
| 989 | } |
| 990 | |
Robert Sloan | 4d1ac50 | 2017-02-06 08:36:14 -0800 | [diff] [blame] | 991 | /* Historically, zero was treated as |SSL_DEFAULT_SESSION_TIMEOUT|. */ |
| 992 | if (timeout == 0) { |
| 993 | timeout = SSL_DEFAULT_SESSION_TIMEOUT; |
| 994 | } |
| 995 | |
Robert Sloan | 7d422bc | 2017-03-06 10:04:29 -0800 | [diff] [blame] | 996 | uint32_t old_timeout = ctx->session_timeout; |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 997 | ctx->session_timeout = timeout; |
| 998 | return old_timeout; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 999 | } |
| 1000 | |
Robert Sloan | 7d422bc | 2017-03-06 10:04:29 -0800 | [diff] [blame] | 1001 | uint32_t SSL_CTX_get_timeout(const SSL_CTX *ctx) { |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 1002 | if (ctx == NULL) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1003 | return 0; |
| 1004 | } |
| 1005 | |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 1006 | return ctx->session_timeout; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1007 | } |
| 1008 | |
Robert Sloan | 7d422bc | 2017-03-06 10:04:29 -0800 | [diff] [blame] | 1009 | void SSL_CTX_set_session_psk_dhe_timeout(SSL_CTX *ctx, uint32_t timeout) { |
Robert Sloan | 4d1ac50 | 2017-02-06 08:36:14 -0800 | [diff] [blame] | 1010 | ctx->session_psk_dhe_timeout = timeout; |
| 1011 | } |
| 1012 | |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1013 | typedef struct timeout_param_st { |
| 1014 | SSL_CTX *ctx; |
Robert Sloan | 7d422bc | 2017-03-06 10:04:29 -0800 | [diff] [blame] | 1015 | uint64_t time; |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 1016 | LHASH_OF(SSL_SESSION) *cache; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1017 | } TIMEOUT_PARAM; |
| 1018 | |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 1019 | static void timeout_doall_arg(SSL_SESSION *session, void *void_param) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1020 | TIMEOUT_PARAM *param = void_param; |
| 1021 | |
| 1022 | if (param->time == 0 || |
Robert Sloan | 7d422bc | 2017-03-06 10:04:29 -0800 | [diff] [blame] | 1023 | session->time + session->timeout < session->time || |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 1024 | param->time > (session->time + session->timeout)) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1025 | /* timeout */ |
| 1026 | /* The reason we don't call SSL_CTX_remove_session() is to |
| 1027 | * save on locking overhead */ |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 1028 | (void) lh_SSL_SESSION_delete(param->cache, session); |
| 1029 | SSL_SESSION_list_remove(param->ctx, session); |
| 1030 | session->not_resumable = 1; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1031 | if (param->ctx->remove_session_cb != NULL) { |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 1032 | param->ctx->remove_session_cb(param->ctx, session); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1033 | } |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 1034 | SSL_SESSION_free(session); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1035 | } |
| 1036 | } |
| 1037 | |
Robert Sloan | 7d422bc | 2017-03-06 10:04:29 -0800 | [diff] [blame] | 1038 | void SSL_CTX_flush_sessions(SSL_CTX *ctx, uint64_t time) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1039 | TIMEOUT_PARAM tp; |
| 1040 | |
Adam Langley | f4e4272 | 2015-06-04 17:45:09 -0700 | [diff] [blame] | 1041 | tp.ctx = ctx; |
| 1042 | tp.cache = ctx->sessions; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1043 | if (tp.cache == NULL) { |
| 1044 | return; |
| 1045 | } |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 1046 | tp.time = time; |
Adam Langley | f4e4272 | 2015-06-04 17:45:09 -0700 | [diff] [blame] | 1047 | CRYPTO_MUTEX_lock_write(&ctx->lock); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1048 | lh_SSL_SESSION_doall_arg(tp.cache, timeout_doall_arg, &tp); |
David Benjamin | d316cba | 2016-06-02 16:17:39 -0400 | [diff] [blame] | 1049 | CRYPTO_MUTEX_unlock_write(&ctx->lock); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1050 | } |
| 1051 | |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1052 | /* locked by SSL_CTX in the calling function */ |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 1053 | static void SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *session) { |
| 1054 | if (session->next == NULL || session->prev == NULL) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1055 | return; |
| 1056 | } |
| 1057 | |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 1058 | if (session->next == (SSL_SESSION *)&ctx->session_cache_tail) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1059 | /* last element in list */ |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 1060 | if (session->prev == (SSL_SESSION *)&ctx->session_cache_head) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1061 | /* only one element in list */ |
| 1062 | ctx->session_cache_head = NULL; |
| 1063 | ctx->session_cache_tail = NULL; |
| 1064 | } else { |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 1065 | ctx->session_cache_tail = session->prev; |
| 1066 | session->prev->next = (SSL_SESSION *)&(ctx->session_cache_tail); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1067 | } |
| 1068 | } else { |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 1069 | if (session->prev == (SSL_SESSION *)&ctx->session_cache_head) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1070 | /* first element in list */ |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 1071 | ctx->session_cache_head = session->next; |
| 1072 | session->next->prev = (SSL_SESSION *)&(ctx->session_cache_head); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1073 | } else { /* middle of list */ |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 1074 | session->next->prev = session->prev; |
| 1075 | session->prev->next = session->next; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1076 | } |
| 1077 | } |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 1078 | session->prev = session->next = NULL; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1079 | } |
| 1080 | |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 1081 | static void SSL_SESSION_list_add(SSL_CTX *ctx, SSL_SESSION *session) { |
| 1082 | if (session->next != NULL && session->prev != NULL) { |
| 1083 | SSL_SESSION_list_remove(ctx, session); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1084 | } |
| 1085 | |
| 1086 | if (ctx->session_cache_head == NULL) { |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 1087 | ctx->session_cache_head = session; |
| 1088 | ctx->session_cache_tail = session; |
| 1089 | session->prev = (SSL_SESSION *)&(ctx->session_cache_head); |
| 1090 | session->next = (SSL_SESSION *)&(ctx->session_cache_tail); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1091 | } else { |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 1092 | session->next = ctx->session_cache_head; |
| 1093 | session->next->prev = session; |
| 1094 | session->prev = (SSL_SESSION *)&(ctx->session_cache_head); |
| 1095 | ctx->session_cache_head = session; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1096 | } |
| 1097 | } |
| 1098 | |
| 1099 | void SSL_CTX_sess_set_new_cb(SSL_CTX *ctx, |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 1100 | int (*cb)(SSL *ssl, SSL_SESSION *session)) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1101 | ctx->new_session_cb = cb; |
| 1102 | } |
| 1103 | |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 1104 | int (*SSL_CTX_sess_get_new_cb(SSL_CTX *ctx))(SSL *ssl, SSL_SESSION *session) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1105 | return ctx->new_session_cb; |
| 1106 | } |
| 1107 | |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 1108 | void SSL_CTX_sess_set_remove_cb( |
| 1109 | SSL_CTX *ctx, void (*cb)(SSL_CTX *ctx, SSL_SESSION *session)) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1110 | ctx->remove_session_cb = cb; |
| 1111 | } |
| 1112 | |
| 1113 | void (*SSL_CTX_sess_get_remove_cb(SSL_CTX *ctx))(SSL_CTX *ctx, |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 1114 | SSL_SESSION *session) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1115 | return ctx->remove_session_cb; |
| 1116 | } |
| 1117 | |
| 1118 | void SSL_CTX_sess_set_get_cb(SSL_CTX *ctx, |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 1119 | SSL_SESSION *(*cb)(SSL *ssl, |
| 1120 | uint8_t *id, int id_len, |
| 1121 | int *out_copy)) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1122 | ctx->get_session_cb = cb; |
| 1123 | } |
| 1124 | |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 1125 | SSL_SESSION *(*SSL_CTX_sess_get_get_cb(SSL_CTX *ctx))( |
| 1126 | SSL *ssl, uint8_t *id, int id_len, int *out_copy) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1127 | return ctx->get_session_cb; |
| 1128 | } |
| 1129 | |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 1130 | void SSL_CTX_set_info_callback( |
| 1131 | SSL_CTX *ctx, void (*cb)(const SSL *ssl, int type, int value)) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1132 | ctx->info_callback = cb; |
| 1133 | } |
| 1134 | |
| 1135 | void (*SSL_CTX_get_info_callback(SSL_CTX *ctx))(const SSL *ssl, int type, |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 1136 | int value) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1137 | return ctx->info_callback; |
| 1138 | } |
| 1139 | |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1140 | void SSL_CTX_set_channel_id_cb(SSL_CTX *ctx, |
| 1141 | void (*cb)(SSL *ssl, EVP_PKEY **pkey)) { |
| 1142 | ctx->channel_id_cb = cb; |
| 1143 | } |
| 1144 | |
| 1145 | void (*SSL_CTX_get_channel_id_cb(SSL_CTX *ctx))(SSL *ssl, EVP_PKEY **pkey) { |
| 1146 | return ctx->channel_id_cb; |
| 1147 | } |