ssl_sess.c revision 284295
155714Skris/* ssl/ssl_sess.c */ 255714Skris/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 355714Skris * All rights reserved. 455714Skris * 555714Skris * This package is an SSL implementation written 655714Skris * by Eric Young (eay@cryptsoft.com). 755714Skris * The implementation was written so as to conform with Netscapes SSL. 855714Skris * 955714Skris * This library is free for commercial and non-commercial use as long as 1055714Skris * the following conditions are aheared to. The following conditions 1155714Skris * apply to all code found in this distribution, be it the RC4, RSA, 1255714Skris * lhash, DES, etc., code; not just the SSL code. The SSL documentation 1355714Skris * included with this distribution is covered by the same copyright terms 1455714Skris * except that the holder is Tim Hudson (tjh@cryptsoft.com). 1555714Skris * 1655714Skris * Copyright remains Eric Young's, and as such any Copyright notices in 1755714Skris * the code are not to be removed. 1855714Skris * If this package is used in a product, Eric Young should be given attribution 1955714Skris * as the author of the parts of the library used. 2055714Skris * This can be in the form of a textual message at program startup or 2155714Skris * in documentation (online or textual) provided with the package. 2255714Skris * 2355714Skris * Redistribution and use in source and binary forms, with or without 2455714Skris * modification, are permitted provided that the following conditions 2555714Skris * are met: 2655714Skris * 1. Redistributions of source code must retain the copyright 2755714Skris * notice, this list of conditions and the following disclaimer. 2855714Skris * 2. Redistributions in binary form must reproduce the above copyright 2955714Skris * notice, this list of conditions and the following disclaimer in the 3055714Skris * documentation and/or other materials provided with the distribution. 3155714Skris * 3. All advertising materials mentioning features or use of this software 3255714Skris * must display the following acknowledgement: 3355714Skris * "This product includes cryptographic software written by 3455714Skris * Eric Young (eay@cryptsoft.com)" 3555714Skris * The word 'cryptographic' can be left out if the rouines from the library 3655714Skris * being used are not cryptographic related :-). 3755714Skris * 4. If you include any Windows specific code (or a derivative thereof) from 3855714Skris * the apps directory (application code) you must include an acknowledgement: 3955714Skris * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 4055714Skris * 4155714Skris * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 4255714Skris * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 4355714Skris * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 4455714Skris * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 4555714Skris * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 4655714Skris * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 4755714Skris * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 4855714Skris * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 4955714Skris * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 5055714Skris * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 5155714Skris * SUCH DAMAGE. 5255714Skris * 5355714Skris * The licence and distribution terms for any publically available version or 5455714Skris * derivative of this code cannot be changed. i.e. this code cannot simply be 5555714Skris * copied and put under another distribution licence 5655714Skris * [including the GNU Public Licence.] 5755714Skris */ 5855714Skris 5955714Skris#include <stdio.h> 6055714Skris#include <openssl/lhash.h> 6155714Skris#include <openssl/rand.h> 62194206Ssimon#ifndef OPENSSL_NO_ENGINE 63194206Ssimon#include <openssl/engine.h> 64194206Ssimon#endif 6555714Skris#include "ssl_locl.h" 6655714Skris 6755714Skrisstatic void SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *s); 6855714Skrisstatic void SSL_SESSION_list_add(SSL_CTX *ctx,SSL_SESSION *s); 6955714Skrisstatic int remove_session_lock(SSL_CTX *ctx, SSL_SESSION *c, int lck); 7055714Skris 71160814SsimonSSL_SESSION *SSL_get_session(const SSL *ssl) 7259191Skris/* aka SSL_get0_session; gets 0 objects, just returns a copy of the pointer */ 7355714Skris { 7455714Skris return(ssl->session); 7555714Skris } 7655714Skris 7759191SkrisSSL_SESSION *SSL_get1_session(SSL *ssl) 7859191Skris/* variant of SSL_get_session: caller really gets something */ 7955714Skris { 8059191Skris SSL_SESSION *sess; 8159191Skris /* Need to lock this all up rather than just use CRYPTO_add so that 8259191Skris * somebody doesn't free ssl->session between when we check it's 8359191Skris * non-null and when we up the reference count. */ 84120631Snectar CRYPTO_w_lock(CRYPTO_LOCK_SSL_SESSION); 8559191Skris sess = ssl->session; 8659191Skris if(sess) 8759191Skris sess->references++; 88120631Snectar CRYPTO_w_unlock(CRYPTO_LOCK_SSL_SESSION); 8959191Skris return(sess); 9059191Skris } 9159191Skris 9259191Skrisint SSL_SESSION_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 9359191Skris CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 9459191Skris { 95109998Smarkm return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_SESSION, argl, argp, 96109998Smarkm new_func, dup_func, free_func); 9755714Skris } 9855714Skris 9955714Skrisint SSL_SESSION_set_ex_data(SSL_SESSION *s, int idx, void *arg) 10055714Skris { 10155714Skris return(CRYPTO_set_ex_data(&s->ex_data,idx,arg)); 10255714Skris } 10355714Skris 104160814Ssimonvoid *SSL_SESSION_get_ex_data(const SSL_SESSION *s, int idx) 10555714Skris { 10655714Skris return(CRYPTO_get_ex_data(&s->ex_data,idx)); 10755714Skris } 10855714Skris 10955714SkrisSSL_SESSION *SSL_SESSION_new(void) 11055714Skris { 11155714Skris SSL_SESSION *ss; 11255714Skris 11368651Skris ss=(SSL_SESSION *)OPENSSL_malloc(sizeof(SSL_SESSION)); 11455714Skris if (ss == NULL) 11555714Skris { 11655714Skris SSLerr(SSL_F_SSL_SESSION_NEW,ERR_R_MALLOC_FAILURE); 11755714Skris return(0); 11855714Skris } 11955714Skris memset(ss,0,sizeof(SSL_SESSION)); 12055714Skris 12159191Skris ss->verify_result = 1; /* avoid 0 (= X509_V_OK) just in case */ 12255714Skris ss->references=1; 12355714Skris ss->timeout=60*5+4; /* 5 minute timeout by default */ 124160814Ssimon ss->time=(unsigned long)time(NULL); 12555714Skris ss->prev=NULL; 12655714Skris ss->next=NULL; 12755714Skris ss->compress_meth=0; 128194206Ssimon#ifndef OPENSSL_NO_TLSEXT 129194206Ssimon ss->tlsext_hostname = NULL; 130194206Ssimon#endif 131109998Smarkm CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, ss, &ss->ex_data); 13255714Skris return(ss); 13355714Skris } 13455714Skris 135284295Sdelphij/* 136284295Sdelphij * Create a new SSL_SESSION and duplicate the contents of |src| into it. If 137284295Sdelphij * ticket == 0 then no ticket information is duplicated, otherwise it is. 138284295Sdelphij */ 139284295SdelphijSSL_SESSION *ssl_session_dup(SSL_SESSION *src, int ticket) 140284295Sdelphij{ 141284295Sdelphij SSL_SESSION *dest; 142284295Sdelphij 143284295Sdelphij dest = OPENSSL_malloc(sizeof(*src)); 144284295Sdelphij if (dest == NULL) { 145284295Sdelphij goto err; 146284295Sdelphij } 147284295Sdelphij memcpy(dest, src, sizeof(*dest)); 148284295Sdelphij 149284295Sdelphij /* 150284295Sdelphij * Set the various pointers to NULL so that we can call SSL_SESSION_free in 151284295Sdelphij * the case of an error whilst halfway through constructing dest 152284295Sdelphij */ 153284295Sdelphij dest->ciphers = NULL; 154284295Sdelphij#ifndef OPENSSL_NO_TLSEXT 155284295Sdelphij dest->tlsext_hostname = NULL; 156284295Sdelphij#endif 157284295Sdelphij dest->tlsext_tick = NULL; 158284295Sdelphij memset(&dest->ex_data, 0, sizeof(dest->ex_data)); 159284295Sdelphij 160284295Sdelphij /* We deliberately don't copy the prev and next pointers */ 161284295Sdelphij dest->prev = NULL; 162284295Sdelphij dest->next = NULL; 163284295Sdelphij 164284295Sdelphij dest->references = 1; 165284295Sdelphij 166284295Sdelphij if (src->sess_cert != NULL) 167284295Sdelphij CRYPTO_add(&src->sess_cert->references, 1, CRYPTO_LOCK_SSL_SESS_CERT); 168284295Sdelphij 169284295Sdelphij if (src->peer != NULL) 170284295Sdelphij CRYPTO_add(&src->peer->references, 1, CRYPTO_LOCK_X509); 171284295Sdelphij 172284295Sdelphij if(src->ciphers != NULL) { 173284295Sdelphij dest->ciphers = sk_SSL_CIPHER_dup(src->ciphers); 174284295Sdelphij if (dest->ciphers == NULL) 175284295Sdelphij goto err; 176284295Sdelphij } 177284295Sdelphij 178284295Sdelphij if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, 179284295Sdelphij &dest->ex_data, &src->ex_data)) { 180284295Sdelphij goto err; 181284295Sdelphij } 182284295Sdelphij 183284295Sdelphij#ifndef OPENSSL_NO_TLSEXT 184284295Sdelphij if (src->tlsext_hostname) { 185284295Sdelphij dest->tlsext_hostname = BUF_strdup(src->tlsext_hostname); 186284295Sdelphij if (dest->tlsext_hostname == NULL) { 187284295Sdelphij goto err; 188284295Sdelphij } 189284295Sdelphij } 190284295Sdelphij#endif 191284295Sdelphij 192284295Sdelphij if (ticket != 0) { 193284295Sdelphij dest->tlsext_tick = BUF_memdup(src->tlsext_tick, src->tlsext_ticklen); 194284295Sdelphij if(dest->tlsext_tick == NULL) 195284295Sdelphij goto err; 196284295Sdelphij } else { 197284295Sdelphij dest->tlsext_tick_lifetime_hint = 0; 198284295Sdelphij dest->tlsext_ticklen = 0; 199284295Sdelphij } 200284295Sdelphij 201284295Sdelphij return dest; 202284295Sdelphijerr: 203284295Sdelphij SSLerr(SSL_F_SSL_SESSION_DUP, ERR_R_MALLOC_FAILURE); 204284295Sdelphij SSL_SESSION_free(dest); 205284295Sdelphij return NULL; 206284295Sdelphij} 207284295Sdelphij 208160814Ssimonconst unsigned char *SSL_SESSION_get_id(const SSL_SESSION *s, unsigned int *len) 209160814Ssimon { 210160814Ssimon if(len) 211160814Ssimon *len = s->session_id_length; 212160814Ssimon return s->session_id; 213160814Ssimon } 214160814Ssimon 215109998Smarkm/* Even with SSLv2, we have 16 bytes (128 bits) of session ID space. SSLv3/TLSv1 216109998Smarkm * has 32 bytes (256 bits). As such, filling the ID with random gunk repeatedly 217109998Smarkm * until we have no conflict is going to complete in one iteration pretty much 218109998Smarkm * "most" of the time (btw: understatement). So, if it takes us 10 iterations 219109998Smarkm * and we still can't avoid a conflict - well that's a reasonable point to call 220109998Smarkm * it quits. Either the RAND code is broken or someone is trying to open roughly 221109998Smarkm * very close to 2^128 (or 2^256) SSL sessions to our server. How you might 222109998Smarkm * store that many sessions is perhaps a more interesting question ... */ 223109998Smarkm 224109998Smarkm#define MAX_SESS_ID_ATTEMPTS 10 225109998Smarkmstatic int def_generate_session_id(const SSL *ssl, unsigned char *id, 226109998Smarkm unsigned int *id_len) 227109998Smarkm{ 228109998Smarkm unsigned int retry = 0; 229109998Smarkm do 230160814Ssimon if (RAND_pseudo_bytes(id, *id_len) <= 0) 231142425Snectar return 0; 232109998Smarkm while(SSL_has_matching_session_id(ssl, id, *id_len) && 233109998Smarkm (++retry < MAX_SESS_ID_ATTEMPTS)); 234109998Smarkm if(retry < MAX_SESS_ID_ATTEMPTS) 235109998Smarkm return 1; 236109998Smarkm /* else - woops a session_id match */ 237109998Smarkm /* XXX We should also check the external cache -- 238109998Smarkm * but the probability of a collision is negligible, and 239109998Smarkm * we could not prevent the concurrent creation of sessions 240109998Smarkm * with identical IDs since we currently don't have means 241109998Smarkm * to atomically check whether a session ID already exists 242109998Smarkm * and make a reservation for it if it does not 243109998Smarkm * (this problem applies to the internal cache as well). 244109998Smarkm */ 245109998Smarkm return 0; 246109998Smarkm} 247109998Smarkm 24855714Skrisint ssl_get_new_session(SSL *s, int session) 24955714Skris { 25055714Skris /* This gets used by clients and servers. */ 25155714Skris 252109998Smarkm unsigned int tmp; 25355714Skris SSL_SESSION *ss=NULL; 254109998Smarkm GEN_SESSION_CB cb = def_generate_session_id; 25555714Skris 25655714Skris if ((ss=SSL_SESSION_new()) == NULL) return(0); 25755714Skris 25855714Skris /* If the context has a default timeout, use it */ 25955714Skris if (s->ctx->session_timeout == 0) 26055714Skris ss->timeout=SSL_get_default_timeout(s); 26155714Skris else 26255714Skris ss->timeout=s->ctx->session_timeout; 26355714Skris 26455714Skris if (s->session != NULL) 26555714Skris { 26655714Skris SSL_SESSION_free(s->session); 26755714Skris s->session=NULL; 26855714Skris } 26955714Skris 27055714Skris if (session) 27155714Skris { 27255714Skris if (s->version == SSL2_VERSION) 27355714Skris { 27455714Skris ss->ssl_version=SSL2_VERSION; 27555714Skris ss->session_id_length=SSL2_SSL_SESSION_ID_LENGTH; 27655714Skris } 27755714Skris else if (s->version == SSL3_VERSION) 27855714Skris { 27955714Skris ss->ssl_version=SSL3_VERSION; 28055714Skris ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH; 28155714Skris } 28255714Skris else if (s->version == TLS1_VERSION) 28355714Skris { 28455714Skris ss->ssl_version=TLS1_VERSION; 28555714Skris ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH; 28655714Skris } 287205128Ssimon else if (s->version == DTLS1_BAD_VER) 288205128Ssimon { 289205128Ssimon ss->ssl_version=DTLS1_BAD_VER; 290205128Ssimon ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH; 291205128Ssimon } 292160814Ssimon else if (s->version == DTLS1_VERSION) 293160814Ssimon { 294160814Ssimon ss->ssl_version=DTLS1_VERSION; 295160814Ssimon ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH; 296160814Ssimon } 29755714Skris else 29855714Skris { 29955714Skris SSLerr(SSL_F_SSL_GET_NEW_SESSION,SSL_R_UNSUPPORTED_SSL_VERSION); 30055714Skris SSL_SESSION_free(ss); 30155714Skris return(0); 30255714Skris } 303194206Ssimon#ifndef OPENSSL_NO_TLSEXT 304194206Ssimon /* If RFC4507 ticket use empty session ID */ 305194206Ssimon if (s->tlsext_ticket_expected) 306194206Ssimon { 307194206Ssimon ss->session_id_length = 0; 308194206Ssimon goto sess_id_done; 309194206Ssimon } 310194206Ssimon#endif 311109998Smarkm /* Choose which callback will set the session ID */ 312109998Smarkm CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 313109998Smarkm if(s->generate_session_id) 314109998Smarkm cb = s->generate_session_id; 315109998Smarkm else if(s->ctx->generate_session_id) 316109998Smarkm cb = s->ctx->generate_session_id; 317109998Smarkm CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 318109998Smarkm /* Choose a session ID */ 319109998Smarkm tmp = ss->session_id_length; 320109998Smarkm if(!cb(s, ss->session_id, &tmp)) 32155714Skris { 322109998Smarkm /* The callback failed */ 323109998Smarkm SSLerr(SSL_F_SSL_GET_NEW_SESSION, 324109998Smarkm SSL_R_SSL_SESSION_ID_CALLBACK_FAILED); 325109998Smarkm SSL_SESSION_free(ss); 326109998Smarkm return(0); 32755714Skris } 328109998Smarkm /* Don't allow the callback to set the session length to zero. 329109998Smarkm * nor set it higher than it was. */ 330109998Smarkm if(!tmp || (tmp > ss->session_id_length)) 331109998Smarkm { 332109998Smarkm /* The callback set an illegal length */ 333109998Smarkm SSLerr(SSL_F_SSL_GET_NEW_SESSION, 334109998Smarkm SSL_R_SSL_SESSION_ID_HAS_BAD_LENGTH); 335109998Smarkm SSL_SESSION_free(ss); 336109998Smarkm return(0); 337109998Smarkm } 338109998Smarkm /* If the session length was shrunk and we're SSLv2, pad it */ 339109998Smarkm if((tmp < ss->session_id_length) && (s->version == SSL2_VERSION)) 340109998Smarkm memset(ss->session_id + tmp, 0, ss->session_id_length - tmp); 341109998Smarkm else 342109998Smarkm ss->session_id_length = tmp; 343109998Smarkm /* Finally, check for a conflict */ 344109998Smarkm if(SSL_has_matching_session_id(s, ss->session_id, 345109998Smarkm ss->session_id_length)) 346109998Smarkm { 347109998Smarkm SSLerr(SSL_F_SSL_GET_NEW_SESSION, 348109998Smarkm SSL_R_SSL_SESSION_ID_CONFLICT); 349109998Smarkm SSL_SESSION_free(ss); 350109998Smarkm return(0); 351109998Smarkm } 352194206Ssimon#ifndef OPENSSL_NO_TLSEXT 353194206Ssimon sess_id_done: 354194206Ssimon if (s->tlsext_hostname) { 355194206Ssimon ss->tlsext_hostname = BUF_strdup(s->tlsext_hostname); 356194206Ssimon if (ss->tlsext_hostname == NULL) { 357194206Ssimon SSLerr(SSL_F_SSL_GET_NEW_SESSION, ERR_R_INTERNAL_ERROR); 358194206Ssimon SSL_SESSION_free(ss); 359194206Ssimon return 0; 360194206Ssimon } 361194206Ssimon } 362194206Ssimon#endif 36355714Skris } 36455714Skris else 36555714Skris { 36655714Skris ss->session_id_length=0; 36755714Skris } 36855714Skris 369101615Snectar if (s->sid_ctx_length > sizeof ss->sid_ctx) 370101615Snectar { 371109998Smarkm SSLerr(SSL_F_SSL_GET_NEW_SESSION, ERR_R_INTERNAL_ERROR); 372101615Snectar SSL_SESSION_free(ss); 373101615Snectar return 0; 374101615Snectar } 37555714Skris memcpy(ss->sid_ctx,s->sid_ctx,s->sid_ctx_length); 37655714Skris ss->sid_ctx_length=s->sid_ctx_length; 37755714Skris s->session=ss; 37855714Skris ss->ssl_version=s->version; 37959191Skris ss->verify_result = X509_V_OK; 38055714Skris 38155714Skris return(1); 38255714Skris } 38355714Skris 384194206Ssimonint ssl_get_prev_session(SSL *s, unsigned char *session_id, int len, 385194206Ssimon const unsigned char *limit) 38655714Skris { 38755714Skris /* This is used only by servers. */ 38855714Skris 389194206Ssimon SSL_SESSION *ret=NULL; 39055714Skris int fatal = 0; 391194206Ssimon#ifndef OPENSSL_NO_TLSEXT 392194206Ssimon int r; 393194206Ssimon#endif 394194206Ssimon 39555714Skris if (len > SSL_MAX_SSL_SESSION_ID_LENGTH) 39655714Skris goto err; 397194206Ssimon#ifndef OPENSSL_NO_TLSEXT 398194206Ssimon r = tls1_process_ticket(s, session_id, len, limit, &ret); 399194206Ssimon if (r == -1) 400194206Ssimon { 401194206Ssimon fatal = 1; 402194206Ssimon goto err; 403194206Ssimon } 404194206Ssimon else if (r == 0 || (!ret && !len)) 405194206Ssimon goto err; 406194206Ssimon else if (!ret && !(s->session_ctx->session_cache_mode & SSL_SESS_CACHE_NO_INTERNAL_LOOKUP)) 407194206Ssimon#else 408194206Ssimon if (len == 0) 409194206Ssimon goto err; 41055714Skris if (!(s->ctx->session_cache_mode & SSL_SESS_CACHE_NO_INTERNAL_LOOKUP)) 411194206Ssimon#endif 41255714Skris { 413194206Ssimon SSL_SESSION data; 414194206Ssimon data.ssl_version=s->version; 415194206Ssimon data.session_id_length=len; 416194206Ssimon if (len == 0) 417194206Ssimon return 0; 418194206Ssimon memcpy(data.session_id,session_id,len); 41955714Skris CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 42059191Skris ret=(SSL_SESSION *)lh_retrieve(s->ctx->sessions,&data); 42155714Skris if (ret != NULL) 42255714Skris /* don't allow other threads to steal it: */ 42355714Skris CRYPTO_add(&ret->references,1,CRYPTO_LOCK_SSL_SESSION); 42455714Skris CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 42555714Skris } 42655714Skris 42755714Skris if (ret == NULL) 42855714Skris { 42955714Skris int copy=1; 43055714Skris 43155714Skris s->ctx->stats.sess_miss++; 43255714Skris ret=NULL; 43355714Skris if (s->ctx->get_session_cb != NULL 43455714Skris && (ret=s->ctx->get_session_cb(s,session_id,len,©)) 43555714Skris != NULL) 43655714Skris { 43755714Skris s->ctx->stats.sess_cb_hit++; 43855714Skris 43955714Skris /* Increment reference count now if the session callback 44055714Skris * asks us to do so (note that if the session structures 44155714Skris * returned by the callback are shared between threads, 44255714Skris * it must handle the reference count itself [i.e. copy == 0], 44355714Skris * or things won't be thread-safe). */ 44455714Skris if (copy) 44555714Skris CRYPTO_add(&ret->references,1,CRYPTO_LOCK_SSL_SESSION); 44655714Skris 447109998Smarkm /* Add the externally cached session to the internal 448109998Smarkm * cache as well if and only if we are supposed to. */ 449109998Smarkm if(!(s->ctx->session_cache_mode & SSL_SESS_CACHE_NO_INTERNAL_STORE)) 450109998Smarkm /* The following should not return 1, otherwise, 451109998Smarkm * things are very strange */ 452109998Smarkm SSL_CTX_add_session(s->ctx,ret); 45355714Skris } 45455714Skris if (ret == NULL) 45555714Skris goto err; 45655714Skris } 45755714Skris 45855714Skris /* Now ret is non-NULL, and we own one of its reference counts. */ 45955714Skris 460194206Ssimon if (ret->sid_ctx_length != s->sid_ctx_length 461194206Ssimon || memcmp(ret->sid_ctx,s->sid_ctx,ret->sid_ctx_length)) 462194206Ssimon { 46355714Skris /* We've found the session named by the client, but we don't 46455714Skris * want to use it in this context. */ 46555714Skris 46655714Skris#if 0 /* The client cannot always know when a session is not appropriate, 467194206Ssimon * so we shouldn't generate an error message. */ 46855714Skris 469194206Ssimon SSLerr(SSL_F_SSL_GET_PREV_SESSION,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT); 47055714Skris#endif 471194206Ssimon goto err; /* treat like cache miss */ 47255714Skris } 473194206Ssimon 474194206Ssimon if((s->verify_mode & SSL_VERIFY_PEER) && s->sid_ctx_length == 0) 475194206Ssimon { 476194206Ssimon /* We can't be sure if this session is being used out of 477194206Ssimon * context, which is especially important for SSL_VERIFY_PEER. 478194206Ssimon * The application should have used SSL[_CTX]_set_session_id_context. 479194206Ssimon * 480194206Ssimon * For this error case, we generate an error instead of treating 481194206Ssimon * the event like a cache miss (otherwise it would be easy for 482194206Ssimon * applications to effectively disable the session cache by 483194206Ssimon * accident without anyone noticing). 484194206Ssimon */ 485194206Ssimon 486194206Ssimon SSLerr(SSL_F_SSL_GET_PREV_SESSION,SSL_R_SESSION_ID_CONTEXT_UNINITIALIZED); 487194206Ssimon fatal = 1; 488194206Ssimon goto err; 489194206Ssimon } 49055714Skris 49155714Skris if (ret->cipher == NULL) 49255714Skris { 49355714Skris unsigned char buf[5],*p; 49455714Skris unsigned long l; 49555714Skris 49655714Skris p=buf; 49755714Skris l=ret->cipher_id; 49855714Skris l2n(l,p); 499205128Ssimon if ((ret->ssl_version>>8) >= SSL3_VERSION_MAJOR) 50055714Skris ret->cipher=ssl_get_cipher_by_char(s,&(buf[2])); 50155714Skris else 50255714Skris ret->cipher=ssl_get_cipher_by_char(s,&(buf[1])); 50355714Skris if (ret->cipher == NULL) 50455714Skris goto err; 50555714Skris } 50655714Skris 50755714Skris 50855714Skris#if 0 /* This is way too late. */ 50955714Skris 51055714Skris /* If a thread got the session, then 'swaped', and another got 51168651Skris * it and then due to a time-out decided to 'OPENSSL_free' it we could 51255714Skris * be in trouble. So I'll increment it now, then double decrement 51355714Skris * later - am I speaking rubbish?. */ 51455714Skris CRYPTO_add(&ret->references,1,CRYPTO_LOCK_SSL_SESSION); 51555714Skris#endif 51655714Skris 517160814Ssimon if (ret->timeout < (long)(time(NULL) - ret->time)) /* timeout */ 51855714Skris { 51955714Skris s->ctx->stats.sess_timeout++; 52055714Skris /* remove it from the cache */ 52155714Skris SSL_CTX_remove_session(s->ctx,ret); 52255714Skris goto err; 52355714Skris } 52455714Skris 52555714Skris s->ctx->stats.sess_hit++; 52655714Skris 52755714Skris /* ret->time=time(NULL); */ /* rezero timeout? */ 52855714Skris /* again, just leave the session 52955714Skris * if it is the same session, we have just incremented and 53055714Skris * then decremented the reference count :-) */ 53155714Skris if (s->session != NULL) 53255714Skris SSL_SESSION_free(s->session); 53355714Skris s->session=ret; 53459191Skris s->verify_result = s->session->verify_result; 53555714Skris return(1); 53655714Skris 53755714Skris err: 53855714Skris if (ret != NULL) 53955714Skris SSL_SESSION_free(ret); 54055714Skris if (fatal) 54155714Skris return -1; 54255714Skris else 54355714Skris return 0; 54455714Skris } 54555714Skris 54655714Skrisint SSL_CTX_add_session(SSL_CTX *ctx, SSL_SESSION *c) 54755714Skris { 54855714Skris int ret=0; 54955714Skris SSL_SESSION *s; 55055714Skris 55159191Skris /* add just 1 reference count for the SSL_CTX's session cache 55259191Skris * even though it has two ways of access: each session is in a 55359191Skris * doubly linked list and an lhash */ 55455714Skris CRYPTO_add(&c->references,1,CRYPTO_LOCK_SSL_SESSION); 55559191Skris /* if session c is in already in cache, we take back the increment later */ 55655714Skris 55755714Skris CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 55859191Skris s=(SSL_SESSION *)lh_insert(ctx->sessions,c); 55955714Skris 56059191Skris /* s != NULL iff we already had a session with the given PID. 56159191Skris * In this case, s == c should hold (then we did not really modify 56259191Skris * ctx->sessions), or we're in trouble. */ 56359191Skris if (s != NULL && s != c) 56459191Skris { 56559191Skris /* We *are* in trouble ... */ 56659191Skris SSL_SESSION_list_remove(ctx,s); 56759191Skris SSL_SESSION_free(s); 56859191Skris /* ... so pretend the other session did not exist in cache 56959191Skris * (we cannot handle two SSL_SESSION structures with identical 57059191Skris * session ID in the same cache, which could happen e.g. when 57159191Skris * two threads concurrently obtain the same session from an external 57259191Skris * cache) */ 57359191Skris s = NULL; 57459191Skris } 57559191Skris 57659191Skris /* Put at the head of the queue unless it is already in the cache */ 57755714Skris if (s == NULL) 57855714Skris SSL_SESSION_list_add(ctx,c); 57955714Skris 58055714Skris if (s != NULL) 58155714Skris { 58259191Skris /* existing cache entry -- decrement previously incremented reference 58359191Skris * count because it already takes into account the cache */ 58459191Skris 58559191Skris SSL_SESSION_free(s); /* s == c */ 58655714Skris ret=0; 58755714Skris } 58855714Skris else 58955714Skris { 59059191Skris /* new cache entry -- remove old ones if cache has become too large */ 59159191Skris 59255714Skris ret=1; 59355714Skris 59455714Skris if (SSL_CTX_sess_get_cache_size(ctx) > 0) 59555714Skris { 59655714Skris while (SSL_CTX_sess_number(ctx) > 59755714Skris SSL_CTX_sess_get_cache_size(ctx)) 59855714Skris { 59955714Skris if (!remove_session_lock(ctx, 60055714Skris ctx->session_cache_tail, 0)) 60155714Skris break; 60255714Skris else 60355714Skris ctx->stats.sess_cache_full++; 60455714Skris } 60555714Skris } 60655714Skris } 60755714Skris CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 60855714Skris return(ret); 60955714Skris } 61055714Skris 61155714Skrisint SSL_CTX_remove_session(SSL_CTX *ctx, SSL_SESSION *c) 61255714Skris{ 61355714Skris return remove_session_lock(ctx, c, 1); 61455714Skris} 61555714Skris 61655714Skrisstatic int remove_session_lock(SSL_CTX *ctx, SSL_SESSION *c, int lck) 61755714Skris { 61855714Skris SSL_SESSION *r; 61955714Skris int ret=0; 62055714Skris 62155714Skris if ((c != NULL) && (c->session_id_length != 0)) 62255714Skris { 62355714Skris if(lck) CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 624100928Snectar if ((r = (SSL_SESSION *)lh_retrieve(ctx->sessions,c)) == c) 62555714Skris { 62655714Skris ret=1; 627100928Snectar r=(SSL_SESSION *)lh_delete(ctx->sessions,c); 62855714Skris SSL_SESSION_list_remove(ctx,c); 62955714Skris } 63055714Skris 63155714Skris if(lck) CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 63255714Skris 63355714Skris if (ret) 63455714Skris { 63555714Skris r->not_resumable=1; 63655714Skris if (ctx->remove_session_cb != NULL) 63755714Skris ctx->remove_session_cb(ctx,r); 63855714Skris SSL_SESSION_free(r); 63955714Skris } 64055714Skris } 64155714Skris else 64255714Skris ret=0; 64355714Skris return(ret); 64455714Skris } 64555714Skris 64655714Skrisvoid SSL_SESSION_free(SSL_SESSION *ss) 64755714Skris { 64855714Skris int i; 64955714Skris 65055714Skris if(ss == NULL) 65155714Skris return; 65255714Skris 65355714Skris i=CRYPTO_add(&ss->references,-1,CRYPTO_LOCK_SSL_SESSION); 65455714Skris#ifdef REF_PRINT 65555714Skris REF_PRINT("SSL_SESSION",ss); 65655714Skris#endif 65755714Skris if (i > 0) return; 65855714Skris#ifdef REF_CHECK 65955714Skris if (i < 0) 66055714Skris { 66155714Skris fprintf(stderr,"SSL_SESSION_free, bad reference count\n"); 66255714Skris abort(); /* ok */ 66355714Skris } 66455714Skris#endif 66555714Skris 666109998Smarkm CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, ss, &ss->ex_data); 66755714Skris 668109998Smarkm OPENSSL_cleanse(ss->key_arg,sizeof ss->key_arg); 669109998Smarkm OPENSSL_cleanse(ss->master_key,sizeof ss->master_key); 670109998Smarkm OPENSSL_cleanse(ss->session_id,sizeof ss->session_id); 67155714Skris if (ss->sess_cert != NULL) ssl_sess_cert_free(ss->sess_cert); 67255714Skris if (ss->peer != NULL) X509_free(ss->peer); 67355714Skris if (ss->ciphers != NULL) sk_SSL_CIPHER_free(ss->ciphers); 674194206Ssimon#ifndef OPENSSL_NO_TLSEXT 675194206Ssimon if (ss->tlsext_hostname != NULL) OPENSSL_free(ss->tlsext_hostname); 676194206Ssimon if (ss->tlsext_tick != NULL) OPENSSL_free(ss->tlsext_tick); 677194206Ssimon#endif 678109998Smarkm OPENSSL_cleanse(ss,sizeof(*ss)); 67968651Skris OPENSSL_free(ss); 68055714Skris } 68155714Skris 68255714Skrisint SSL_set_session(SSL *s, SSL_SESSION *session) 68355714Skris { 68455714Skris int ret=0; 68555714Skris SSL_METHOD *meth; 68655714Skris 68755714Skris if (session != NULL) 68855714Skris { 68955714Skris meth=s->ctx->method->get_ssl_method(session->ssl_version); 69055714Skris if (meth == NULL) 69155714Skris meth=s->method->get_ssl_method(session->ssl_version); 69255714Skris if (meth == NULL) 69355714Skris { 69455714Skris SSLerr(SSL_F_SSL_SET_SESSION,SSL_R_UNABLE_TO_FIND_SSL_METHOD); 69555714Skris return(0); 69655714Skris } 69755714Skris 69855714Skris if (meth != s->method) 69955714Skris { 70055714Skris if (!SSL_set_ssl_method(s,meth)) 70155714Skris return(0); 70255714Skris if (s->ctx->session_timeout == 0) 70355714Skris session->timeout=SSL_get_default_timeout(s); 70455714Skris else 70555714Skris session->timeout=s->ctx->session_timeout; 70655714Skris } 70755714Skris 708109998Smarkm#ifndef OPENSSL_NO_KRB5 709109998Smarkm if (s->kssl_ctx && !s->kssl_ctx->client_princ && 710109998Smarkm session->krb5_client_princ_len > 0) 711109998Smarkm { 712167612Ssimon s->kssl_ctx->client_princ = (char *)OPENSSL_malloc(session->krb5_client_princ_len + 1); 713109998Smarkm memcpy(s->kssl_ctx->client_princ,session->krb5_client_princ, 714109998Smarkm session->krb5_client_princ_len); 715109998Smarkm s->kssl_ctx->client_princ[session->krb5_client_princ_len] = '\0'; 716109998Smarkm } 717109998Smarkm#endif /* OPENSSL_NO_KRB5 */ 718109998Smarkm 71955714Skris /* CRYPTO_w_lock(CRYPTO_LOCK_SSL);*/ 72055714Skris CRYPTO_add(&session->references,1,CRYPTO_LOCK_SSL_SESSION); 72155714Skris if (s->session != NULL) 72255714Skris SSL_SESSION_free(s->session); 72355714Skris s->session=session; 72472613Skris s->verify_result = s->session->verify_result; 72555714Skris /* CRYPTO_w_unlock(CRYPTO_LOCK_SSL);*/ 72655714Skris ret=1; 72755714Skris } 72855714Skris else 72955714Skris { 73055714Skris if (s->session != NULL) 73155714Skris { 73255714Skris SSL_SESSION_free(s->session); 73355714Skris s->session=NULL; 73455714Skris } 73555714Skris 73655714Skris meth=s->ctx->method; 73755714Skris if (meth != s->method) 73855714Skris { 73955714Skris if (!SSL_set_ssl_method(s,meth)) 74055714Skris return(0); 74155714Skris } 74255714Skris ret=1; 74355714Skris } 74455714Skris return(ret); 74555714Skris } 74655714Skris 74755714Skrislong SSL_SESSION_set_timeout(SSL_SESSION *s, long t) 74855714Skris { 74955714Skris if (s == NULL) return(0); 75055714Skris s->timeout=t; 75155714Skris return(1); 75255714Skris } 75355714Skris 754160814Ssimonlong SSL_SESSION_get_timeout(const SSL_SESSION *s) 75555714Skris { 75655714Skris if (s == NULL) return(0); 75755714Skris return(s->timeout); 75855714Skris } 75955714Skris 760160814Ssimonlong SSL_SESSION_get_time(const SSL_SESSION *s) 76155714Skris { 76255714Skris if (s == NULL) return(0); 76355714Skris return(s->time); 76455714Skris } 76555714Skris 76655714Skrislong SSL_SESSION_set_time(SSL_SESSION *s, long t) 76755714Skris { 76855714Skris if (s == NULL) return(0); 76955714Skris s->time=t; 77055714Skris return(t); 77155714Skris } 77255714Skris 77355714Skrislong SSL_CTX_set_timeout(SSL_CTX *s, long t) 77455714Skris { 77555714Skris long l; 77655714Skris if (s == NULL) return(0); 77755714Skris l=s->session_timeout; 77855714Skris s->session_timeout=t; 77955714Skris return(l); 78055714Skris } 78155714Skris 782160814Ssimonlong SSL_CTX_get_timeout(const SSL_CTX *s) 78355714Skris { 78455714Skris if (s == NULL) return(0); 78555714Skris return(s->session_timeout); 78655714Skris } 78755714Skris 78855714Skristypedef struct timeout_param_st 78955714Skris { 79055714Skris SSL_CTX *ctx; 79155714Skris long time; 79255714Skris LHASH *cache; 79355714Skris } TIMEOUT_PARAM; 79455714Skris 79555714Skrisstatic void timeout(SSL_SESSION *s, TIMEOUT_PARAM *p) 79655714Skris { 79755714Skris if ((p->time == 0) || (p->time > (s->time+s->timeout))) /* timeout */ 79855714Skris { 79955714Skris /* The reason we don't call SSL_CTX_remove_session() is to 80055714Skris * save on locking overhead */ 80159191Skris lh_delete(p->cache,s); 80255714Skris SSL_SESSION_list_remove(p->ctx,s); 80355714Skris s->not_resumable=1; 80455714Skris if (p->ctx->remove_session_cb != NULL) 80555714Skris p->ctx->remove_session_cb(p->ctx,s); 80655714Skris SSL_SESSION_free(s); 80755714Skris } 80855714Skris } 80955714Skris 810109998Smarkmstatic IMPLEMENT_LHASH_DOALL_ARG_FN(timeout, SSL_SESSION *, TIMEOUT_PARAM *) 811109998Smarkm 81255714Skrisvoid SSL_CTX_flush_sessions(SSL_CTX *s, long t) 81355714Skris { 81455714Skris unsigned long i; 81555714Skris TIMEOUT_PARAM tp; 81655714Skris 81755714Skris tp.ctx=s; 81855714Skris tp.cache=s->sessions; 81955714Skris if (tp.cache == NULL) return; 82055714Skris tp.time=t; 82155714Skris CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 82255714Skris i=tp.cache->down_load; 82355714Skris tp.cache->down_load=0; 824109998Smarkm lh_doall_arg(tp.cache, LHASH_DOALL_ARG_FN(timeout), &tp); 82555714Skris tp.cache->down_load=i; 82655714Skris CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 82755714Skris } 82855714Skris 82955714Skrisint ssl_clear_bad_session(SSL *s) 83055714Skris { 83155714Skris if ( (s->session != NULL) && 83255714Skris !(s->shutdown & SSL_SENT_SHUTDOWN) && 83355714Skris !(SSL_in_init(s) || SSL_in_before(s))) 83455714Skris { 83555714Skris SSL_CTX_remove_session(s->ctx,s->session); 83655714Skris return(1); 83755714Skris } 83855714Skris else 83955714Skris return(0); 84055714Skris } 84155714Skris 84255714Skris/* locked by SSL_CTX in the calling function */ 84355714Skrisstatic void SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *s) 84455714Skris { 84555714Skris if ((s->next == NULL) || (s->prev == NULL)) return; 84655714Skris 84755714Skris if (s->next == (SSL_SESSION *)&(ctx->session_cache_tail)) 84855714Skris { /* last element in list */ 84955714Skris if (s->prev == (SSL_SESSION *)&(ctx->session_cache_head)) 85055714Skris { /* only one element in list */ 85155714Skris ctx->session_cache_head=NULL; 85255714Skris ctx->session_cache_tail=NULL; 85355714Skris } 85455714Skris else 85555714Skris { 85655714Skris ctx->session_cache_tail=s->prev; 85755714Skris s->prev->next=(SSL_SESSION *)&(ctx->session_cache_tail); 85855714Skris } 85955714Skris } 86055714Skris else 86155714Skris { 86255714Skris if (s->prev == (SSL_SESSION *)&(ctx->session_cache_head)) 86355714Skris { /* first element in list */ 86455714Skris ctx->session_cache_head=s->next; 86555714Skris s->next->prev=(SSL_SESSION *)&(ctx->session_cache_head); 86655714Skris } 86755714Skris else 86855714Skris { /* middle of list */ 86955714Skris s->next->prev=s->prev; 87055714Skris s->prev->next=s->next; 87155714Skris } 87255714Skris } 87355714Skris s->prev=s->next=NULL; 87455714Skris } 87555714Skris 87655714Skrisstatic void SSL_SESSION_list_add(SSL_CTX *ctx, SSL_SESSION *s) 87755714Skris { 87855714Skris if ((s->next != NULL) && (s->prev != NULL)) 87955714Skris SSL_SESSION_list_remove(ctx,s); 88055714Skris 88155714Skris if (ctx->session_cache_head == NULL) 88255714Skris { 88355714Skris ctx->session_cache_head=s; 88455714Skris ctx->session_cache_tail=s; 88555714Skris s->prev=(SSL_SESSION *)&(ctx->session_cache_head); 88655714Skris s->next=(SSL_SESSION *)&(ctx->session_cache_tail); 88755714Skris } 88855714Skris else 88955714Skris { 89055714Skris s->next=ctx->session_cache_head; 89155714Skris s->next->prev=s; 89255714Skris s->prev=(SSL_SESSION *)&(ctx->session_cache_head); 89355714Skris ctx->session_cache_head=s; 89455714Skris } 89555714Skris } 89655714Skris 897167612Ssimonvoid SSL_CTX_sess_set_new_cb(SSL_CTX *ctx, 898167612Ssimon int (*cb)(struct ssl_st *ssl,SSL_SESSION *sess)) 899167612Ssimon { 900167612Ssimon ctx->new_session_cb=cb; 901167612Ssimon } 902167612Ssimon 903167612Ssimonint (*SSL_CTX_sess_get_new_cb(SSL_CTX *ctx))(SSL *ssl, SSL_SESSION *sess) 904167612Ssimon { 905167612Ssimon return ctx->new_session_cb; 906167612Ssimon } 907167612Ssimon 908167612Ssimonvoid SSL_CTX_sess_set_remove_cb(SSL_CTX *ctx, 909167612Ssimon void (*cb)(SSL_CTX *ctx,SSL_SESSION *sess)) 910167612Ssimon { 911167612Ssimon ctx->remove_session_cb=cb; 912167612Ssimon } 913167612Ssimon 914167612Ssimonvoid (*SSL_CTX_sess_get_remove_cb(SSL_CTX *ctx))(SSL_CTX * ctx,SSL_SESSION *sess) 915167612Ssimon { 916167612Ssimon return ctx->remove_session_cb; 917167612Ssimon } 918167612Ssimon 919167612Ssimonvoid SSL_CTX_sess_set_get_cb(SSL_CTX *ctx, 920167612Ssimon SSL_SESSION *(*cb)(struct ssl_st *ssl, 921167612Ssimon unsigned char *data,int len,int *copy)) 922167612Ssimon { 923167612Ssimon ctx->get_session_cb=cb; 924167612Ssimon } 925167612Ssimon 926167612SsimonSSL_SESSION * (*SSL_CTX_sess_get_get_cb(SSL_CTX *ctx))(SSL *ssl, 927167612Ssimon unsigned char *data,int len,int *copy) 928167612Ssimon { 929167612Ssimon return ctx->get_session_cb; 930167612Ssimon } 931167612Ssimon 932167612Ssimonvoid SSL_CTX_set_info_callback(SSL_CTX *ctx, 933167612Ssimon void (*cb)(const SSL *ssl,int type,int val)) 934167612Ssimon { 935167612Ssimon ctx->info_callback=cb; 936167612Ssimon } 937167612Ssimon 938167612Ssimonvoid (*SSL_CTX_get_info_callback(SSL_CTX *ctx))(const SSL *ssl,int type,int val) 939167612Ssimon { 940167612Ssimon return ctx->info_callback; 941167612Ssimon } 942167612Ssimon 943167612Ssimonvoid SSL_CTX_set_client_cert_cb(SSL_CTX *ctx, 944167612Ssimon int (*cb)(SSL *ssl, X509 **x509, EVP_PKEY **pkey)) 945167612Ssimon { 946167612Ssimon ctx->client_cert_cb=cb; 947167612Ssimon } 948167612Ssimon 949167612Ssimonint (*SSL_CTX_get_client_cert_cb(SSL_CTX *ctx))(SSL * ssl, X509 ** x509 , EVP_PKEY **pkey) 950167612Ssimon { 951167612Ssimon return ctx->client_cert_cb; 952167612Ssimon } 953167612Ssimon 954194206Ssimon#ifndef OPENSSL_NO_ENGINE 955194206Ssimonint SSL_CTX_set_client_cert_engine(SSL_CTX *ctx, ENGINE *e) 956194206Ssimon { 957194206Ssimon if (!ENGINE_init(e)) 958194206Ssimon { 959194206Ssimon SSLerr(SSL_F_SSL_CTX_SET_CLIENT_CERT_ENGINE, ERR_R_ENGINE_LIB); 960194206Ssimon return 0; 961194206Ssimon } 962194206Ssimon if(!ENGINE_get_ssl_client_cert_function(e)) 963194206Ssimon { 964194206Ssimon SSLerr(SSL_F_SSL_CTX_SET_CLIENT_CERT_ENGINE, SSL_R_NO_CLIENT_CERT_METHOD); 965194206Ssimon ENGINE_finish(e); 966194206Ssimon return 0; 967194206Ssimon } 968194206Ssimon ctx->client_cert_engine = e; 969194206Ssimon return 1; 970194206Ssimon } 971194206Ssimon#endif 972194206Ssimon 973167612Ssimonvoid SSL_CTX_set_cookie_generate_cb(SSL_CTX *ctx, 974167612Ssimon int (*cb)(SSL *ssl, unsigned char *cookie, unsigned int *cookie_len)) 975167612Ssimon { 976167612Ssimon ctx->app_gen_cookie_cb=cb; 977167612Ssimon } 978167612Ssimon 979167612Ssimonvoid SSL_CTX_set_cookie_verify_cb(SSL_CTX *ctx, 980167612Ssimon int (*cb)(SSL *ssl, unsigned char *cookie, unsigned int cookie_len)) 981167612Ssimon { 982167612Ssimon ctx->app_verify_cookie_cb=cb; 983167612Ssimon } 984167612Ssimon 985