1 | /*
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2 | * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
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3 | * Copyright 2005 Nokia. All rights reserved.
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4 | *
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5 | * Licensed under the Apache License 2.0 (the "License"). You may not use
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6 | * this file except in compliance with the License. You can obtain a copy
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7 | * in the file LICENSE in the source distribution or at
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8 | * https://www.openssl.org/source/license.html
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9 | */
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10 |
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11 | #if defined(__TANDEM) && defined(_SPT_MODEL_)
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12 | # include <spthread.h>
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13 | # include <spt_extensions.h> /* timeval */
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14 | #endif
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15 | #include <stdio.h>
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16 | #include "e_os.h"
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17 | #include <openssl/rand.h>
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18 | #include <openssl/engine.h>
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19 | #include "internal/refcount.h"
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20 | #include "internal/cryptlib.h"
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21 | #include "ssl_local.h"
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22 | #include "statem/statem_local.h"
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23 |
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24 | static void SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *s);
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25 | static void SSL_SESSION_list_add(SSL_CTX *ctx, SSL_SESSION *s);
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26 | static int remove_session_lock(SSL_CTX *ctx, SSL_SESSION *c, int lck);
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27 |
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28 | DEFINE_STACK_OF(SSL_SESSION)
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29 |
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30 | __owur static int sess_timedout(time_t t, SSL_SESSION *ss)
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31 | {
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32 | /* if timeout overflowed, it can never timeout! */
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33 | if (ss->timeout_ovf)
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34 | return 0;
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35 | return t > ss->calc_timeout;
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36 | }
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37 |
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38 | /*
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39 | * Returns -1/0/+1 as other XXXcmp-type functions
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40 | * Takes overflow of calculated timeout into consideration
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41 | */
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42 | __owur static int timeoutcmp(SSL_SESSION *a, SSL_SESSION *b)
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43 | {
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44 | /* if only one overflowed, then it is greater */
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45 | if (a->timeout_ovf && !b->timeout_ovf)
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46 | return 1;
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47 | if (!a->timeout_ovf && b->timeout_ovf)
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48 | return -1;
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49 | /* No overflow, or both overflowed, so straight compare is safe */
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50 | if (a->calc_timeout < b->calc_timeout)
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51 | return -1;
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52 | if (a->calc_timeout > b->calc_timeout)
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53 | return 1;
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54 | return 0;
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55 | }
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56 |
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57 | /*
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58 | * Calculates effective timeout, saving overflow state
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59 | * Locking must be done by the caller of this function
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60 | */
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61 | void ssl_session_calculate_timeout(SSL_SESSION *ss)
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62 | {
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63 | /* Force positive timeout */
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64 | if (ss->timeout < 0)
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65 | ss->timeout = 0;
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66 | ss->calc_timeout = ss->time + ss->timeout;
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67 | /*
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68 | * |timeout| is always zero or positive, so the check for
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69 | * overflow only needs to consider if |time| is positive
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70 | */
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71 | ss->timeout_ovf = ss->time > 0 && ss->calc_timeout < ss->time;
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72 | /*
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73 | * N.B. Realistic overflow can only occur in our lifetimes on a
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74 | * 32-bit machine in January 2038.
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75 | * However, There are no controls to limit the |timeout|
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76 | * value, except to keep it positive.
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77 | */
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78 | }
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79 |
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80 | /*
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81 | * SSL_get_session() and SSL_get1_session() are problematic in TLS1.3 because,
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82 | * unlike in earlier protocol versions, the session ticket may not have been
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83 | * sent yet even though a handshake has finished. The session ticket data could
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84 | * come in sometime later...or even change if multiple session ticket messages
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85 | * are sent from the server. The preferred way for applications to obtain
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86 | * a resumable session is to use SSL_CTX_sess_set_new_cb().
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87 | */
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88 |
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89 | SSL_SESSION *SSL_get_session(const SSL *ssl)
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90 | /* aka SSL_get0_session; gets 0 objects, just returns a copy of the pointer */
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91 | {
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92 | return ssl->session;
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93 | }
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94 |
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95 | SSL_SESSION *SSL_get1_session(SSL *ssl)
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96 | /* variant of SSL_get_session: caller really gets something */
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97 | {
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98 | SSL_SESSION *sess;
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99 | /*
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100 | * Need to lock this all up rather than just use CRYPTO_add so that
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101 | * somebody doesn't free ssl->session between when we check it's non-null
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102 | * and when we up the reference count.
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103 | */
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104 | if (!CRYPTO_THREAD_read_lock(ssl->lock))
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105 | return NULL;
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106 | sess = ssl->session;
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107 | if (sess)
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108 | SSL_SESSION_up_ref(sess);
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109 | CRYPTO_THREAD_unlock(ssl->lock);
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110 | return sess;
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111 | }
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112 |
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113 | int SSL_SESSION_set_ex_data(SSL_SESSION *s, int idx, void *arg)
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114 | {
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115 | return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
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116 | }
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117 |
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118 | void *SSL_SESSION_get_ex_data(const SSL_SESSION *s, int idx)
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119 | {
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120 | return CRYPTO_get_ex_data(&s->ex_data, idx);
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121 | }
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122 |
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123 | SSL_SESSION *SSL_SESSION_new(void)
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124 | {
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125 | SSL_SESSION *ss;
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126 |
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127 | if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
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128 | return NULL;
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129 |
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130 | ss = OPENSSL_zalloc(sizeof(*ss));
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131 | if (ss == NULL) {
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132 | ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
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133 | return NULL;
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134 | }
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135 |
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136 | ss->verify_result = 1; /* avoid 0 (= X509_V_OK) just in case */
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137 | ss->references = 1;
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138 | ss->timeout = 60 * 5 + 4; /* 5 minute timeout by default */
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139 | ss->time = time(NULL);
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140 | ssl_session_calculate_timeout(ss);
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141 | ss->lock = CRYPTO_THREAD_lock_new();
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142 | if (ss->lock == NULL) {
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143 | ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
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144 | OPENSSL_free(ss);
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145 | return NULL;
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146 | }
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147 |
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148 | if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, ss, &ss->ex_data)) {
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149 | CRYPTO_THREAD_lock_free(ss->lock);
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150 | OPENSSL_free(ss);
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151 | return NULL;
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152 | }
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153 | return ss;
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154 | }
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155 |
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156 | SSL_SESSION *SSL_SESSION_dup(const SSL_SESSION *src)
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157 | {
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158 | return ssl_session_dup(src, 1);
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159 | }
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160 |
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161 | /*
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162 | * Create a new SSL_SESSION and duplicate the contents of |src| into it. If
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163 | * ticket == 0 then no ticket information is duplicated, otherwise it is.
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164 | */
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165 | SSL_SESSION *ssl_session_dup(const SSL_SESSION *src, int ticket)
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166 | {
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167 | SSL_SESSION *dest;
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168 |
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169 | dest = OPENSSL_malloc(sizeof(*dest));
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170 | if (dest == NULL) {
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171 | goto err;
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172 | }
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173 | memcpy(dest, src, sizeof(*dest));
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174 |
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175 | /*
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176 | * Set the various pointers to NULL so that we can call SSL_SESSION_free in
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177 | * the case of an error whilst halfway through constructing dest
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178 | */
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179 | #ifndef OPENSSL_NO_PSK
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180 | dest->psk_identity_hint = NULL;
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181 | dest->psk_identity = NULL;
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182 | #endif
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183 | dest->ext.hostname = NULL;
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184 | dest->ext.tick = NULL;
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185 | dest->ext.alpn_selected = NULL;
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186 | #ifndef OPENSSL_NO_SRP
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187 | dest->srp_username = NULL;
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188 | #endif
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189 | dest->peer_chain = NULL;
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190 | dest->peer = NULL;
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191 | dest->ticket_appdata = NULL;
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192 | memset(&dest->ex_data, 0, sizeof(dest->ex_data));
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193 |
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194 | /* We deliberately don't copy the prev and next pointers */
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195 | dest->prev = NULL;
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196 | dest->next = NULL;
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197 |
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198 | dest->references = 1;
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199 |
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200 | dest->lock = CRYPTO_THREAD_lock_new();
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201 | if (dest->lock == NULL)
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202 | goto err;
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203 |
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204 | if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, dest, &dest->ex_data))
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205 | goto err;
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206 |
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207 | if (src->peer != NULL) {
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208 | if (!X509_up_ref(src->peer))
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209 | goto err;
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210 | dest->peer = src->peer;
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211 | }
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212 |
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213 | if (src->peer_chain != NULL) {
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214 | dest->peer_chain = X509_chain_up_ref(src->peer_chain);
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215 | if (dest->peer_chain == NULL)
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216 | goto err;
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217 | }
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218 | #ifndef OPENSSL_NO_PSK
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219 | if (src->psk_identity_hint) {
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220 | dest->psk_identity_hint = OPENSSL_strdup(src->psk_identity_hint);
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221 | if (dest->psk_identity_hint == NULL) {
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222 | goto err;
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223 | }
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224 | }
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225 | if (src->psk_identity) {
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226 | dest->psk_identity = OPENSSL_strdup(src->psk_identity);
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227 | if (dest->psk_identity == NULL) {
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228 | goto err;
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229 | }
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230 | }
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231 | #endif
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232 |
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233 | if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL_SESSION,
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234 | &dest->ex_data, &src->ex_data)) {
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235 | goto err;
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236 | }
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237 |
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238 | if (src->ext.hostname) {
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239 | dest->ext.hostname = OPENSSL_strdup(src->ext.hostname);
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240 | if (dest->ext.hostname == NULL) {
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241 | goto err;
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242 | }
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243 | }
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244 |
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245 | if (ticket != 0 && src->ext.tick != NULL) {
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246 | dest->ext.tick =
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247 | OPENSSL_memdup(src->ext.tick, src->ext.ticklen);
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248 | if (dest->ext.tick == NULL)
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249 | goto err;
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250 | } else {
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251 | dest->ext.tick_lifetime_hint = 0;
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252 | dest->ext.ticklen = 0;
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253 | }
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254 |
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255 | if (src->ext.alpn_selected != NULL) {
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256 | dest->ext.alpn_selected = OPENSSL_memdup(src->ext.alpn_selected,
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257 | src->ext.alpn_selected_len);
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258 | if (dest->ext.alpn_selected == NULL)
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259 | goto err;
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260 | }
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261 |
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262 | #ifndef OPENSSL_NO_SRP
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263 | if (src->srp_username) {
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264 | dest->srp_username = OPENSSL_strdup(src->srp_username);
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265 | if (dest->srp_username == NULL) {
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266 | goto err;
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267 | }
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268 | }
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269 | #endif
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270 |
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271 | if (src->ticket_appdata != NULL) {
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272 | dest->ticket_appdata =
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273 | OPENSSL_memdup(src->ticket_appdata, src->ticket_appdata_len);
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274 | if (dest->ticket_appdata == NULL)
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275 | goto err;
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276 | }
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277 |
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278 | return dest;
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279 | err:
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280 | ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
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281 | SSL_SESSION_free(dest);
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282 | return NULL;
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283 | }
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284 |
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285 | const unsigned char *SSL_SESSION_get_id(const SSL_SESSION *s, unsigned int *len)
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286 | {
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287 | if (len)
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288 | *len = (unsigned int)s->session_id_length;
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289 | return s->session_id;
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290 | }
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291 | const unsigned char *SSL_SESSION_get0_id_context(const SSL_SESSION *s,
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292 | unsigned int *len)
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293 | {
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294 | if (len != NULL)
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295 | *len = (unsigned int)s->sid_ctx_length;
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296 | return s->sid_ctx;
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297 | }
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298 |
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299 | unsigned int SSL_SESSION_get_compress_id(const SSL_SESSION *s)
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300 | {
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301 | return s->compress_meth;
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302 | }
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303 |
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304 | /*
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305 | * SSLv3/TLSv1 has 32 bytes (256 bits) of session ID space. As such, filling
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306 | * the ID with random junk repeatedly until we have no conflict is going to
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307 | * complete in one iteration pretty much "most" of the time (btw:
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308 | * understatement). So, if it takes us 10 iterations and we still can't avoid
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309 | * a conflict - well that's a reasonable point to call it quits. Either the
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310 | * RAND code is broken or someone is trying to open roughly very close to
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311 | * 2^256 SSL sessions to our server. How you might store that many sessions
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312 | * is perhaps a more interesting question ...
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313 | */
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314 |
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315 | #define MAX_SESS_ID_ATTEMPTS 10
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316 | static int def_generate_session_id(SSL *ssl, unsigned char *id,
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317 | unsigned int *id_len)
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318 | {
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319 | unsigned int retry = 0;
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320 | do
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321 | if (RAND_bytes_ex(ssl->ctx->libctx, id, *id_len, 0) <= 0)
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322 | return 0;
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323 | while (SSL_has_matching_session_id(ssl, id, *id_len) &&
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324 | (++retry < MAX_SESS_ID_ATTEMPTS)) ;
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325 | if (retry < MAX_SESS_ID_ATTEMPTS)
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326 | return 1;
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327 | /* else - woops a session_id match */
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328 | /*
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329 | * XXX We should also check the external cache -- but the probability of
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330 | * a collision is negligible, and we could not prevent the concurrent
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331 | * creation of sessions with identical IDs since we currently don't have
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332 | * means to atomically check whether a session ID already exists and make
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333 | * a reservation for it if it does not (this problem applies to the
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334 | * internal cache as well).
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335 | */
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336 | return 0;
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337 | }
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338 |
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339 | int ssl_generate_session_id(SSL *s, SSL_SESSION *ss)
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340 | {
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341 | unsigned int tmp;
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342 | GEN_SESSION_CB cb = def_generate_session_id;
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343 |
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344 | switch (s->version) {
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345 | case SSL3_VERSION:
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346 | case TLS1_VERSION:
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347 | case TLS1_1_VERSION:
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348 | case TLS1_2_VERSION:
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349 | case TLS1_3_VERSION:
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350 | case DTLS1_BAD_VER:
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351 | case DTLS1_VERSION:
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352 | case DTLS1_2_VERSION:
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353 | ss->session_id_length = SSL3_SSL_SESSION_ID_LENGTH;
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354 | break;
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355 | default:
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356 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_R_UNSUPPORTED_SSL_VERSION);
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357 | return 0;
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358 | }
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359 |
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360 | /*-
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361 | * If RFC5077 ticket, use empty session ID (as server).
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362 | * Note that:
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363 | * (a) ssl_get_prev_session() does lookahead into the
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364 | * ClientHello extensions to find the session ticket.
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365 | * When ssl_get_prev_session() fails, statem_srvr.c calls
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366 | * ssl_get_new_session() in tls_process_client_hello().
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367 | * At that point, it has not yet parsed the extensions,
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368 | * however, because of the lookahead, it already knows
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369 | * whether a ticket is expected or not.
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370 | *
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371 | * (b) statem_clnt.c calls ssl_get_new_session() before parsing
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372 | * ServerHello extensions, and before recording the session
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373 | * ID received from the server, so this block is a noop.
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374 | */
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375 | if (s->ext.ticket_expected) {
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376 | ss->session_id_length = 0;
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377 | return 1;
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378 | }
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379 |
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380 | /* Choose which callback will set the session ID */
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381 | if (!CRYPTO_THREAD_read_lock(s->lock))
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382 | return 0;
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383 | if (!CRYPTO_THREAD_read_lock(s->session_ctx->lock)) {
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384 | CRYPTO_THREAD_unlock(s->lock);
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385 | SSLfatal(s, SSL_AD_INTERNAL_ERROR,
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386 | SSL_R_SESSION_ID_CONTEXT_UNINITIALIZED);
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387 | return 0;
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388 | }
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389 | if (s->generate_session_id)
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390 | cb = s->generate_session_id;
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391 | else if (s->session_ctx->generate_session_id)
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392 | cb = s->session_ctx->generate_session_id;
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393 | CRYPTO_THREAD_unlock(s->session_ctx->lock);
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394 | CRYPTO_THREAD_unlock(s->lock);
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395 | /* Choose a session ID */
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396 | memset(ss->session_id, 0, ss->session_id_length);
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397 | tmp = (int)ss->session_id_length;
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398 | if (!cb(s, ss->session_id, &tmp)) {
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399 | /* The callback failed */
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400 | SSLfatal(s, SSL_AD_INTERNAL_ERROR,
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401 | SSL_R_SSL_SESSION_ID_CALLBACK_FAILED);
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402 | return 0;
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403 | }
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404 | /*
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405 | * Don't allow the callback to set the session length to zero. nor
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406 | * set it higher than it was.
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407 | */
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408 | if (tmp == 0 || tmp > ss->session_id_length) {
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409 | /* The callback set an illegal length */
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410 | SSLfatal(s, SSL_AD_INTERNAL_ERROR,
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411 | SSL_R_SSL_SESSION_ID_HAS_BAD_LENGTH);
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412 | return 0;
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413 | }
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414 | ss->session_id_length = tmp;
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415 | /* Finally, check for a conflict */
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416 | if (SSL_has_matching_session_id(s, ss->session_id,
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417 | (unsigned int)ss->session_id_length)) {
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418 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_R_SSL_SESSION_ID_CONFLICT);
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419 | return 0;
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420 | }
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421 |
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422 | return 1;
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423 | }
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424 |
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425 | int ssl_get_new_session(SSL *s, int session)
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426 | {
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427 | /* This gets used by clients and servers. */
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428 |
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429 | SSL_SESSION *ss = NULL;
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430 |
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431 | if ((ss = SSL_SESSION_new()) == NULL) {
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432 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
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433 | return 0;
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434 | }
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435 |
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436 | /* If the context has a default timeout, use it */
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437 | if (s->session_ctx->session_timeout == 0)
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438 | ss->timeout = SSL_get_default_timeout(s);
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439 | else
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440 | ss->timeout = s->session_ctx->session_timeout;
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441 | ssl_session_calculate_timeout(ss);
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442 |
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443 | SSL_SESSION_free(s->session);
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444 | s->session = NULL;
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445 |
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446 | if (session) {
|
---|
447 | if (SSL_IS_TLS13(s)) {
|
---|
448 | /*
|
---|
449 | * We generate the session id while constructing the
|
---|
450 | * NewSessionTicket in TLSv1.3.
|
---|
451 | */
|
---|
452 | ss->session_id_length = 0;
|
---|
453 | } else if (!ssl_generate_session_id(s, ss)) {
|
---|
454 | /* SSLfatal() already called */
|
---|
455 | SSL_SESSION_free(ss);
|
---|
456 | return 0;
|
---|
457 | }
|
---|
458 |
|
---|
459 | } else {
|
---|
460 | ss->session_id_length = 0;
|
---|
461 | }
|
---|
462 |
|
---|
463 | if (s->sid_ctx_length > sizeof(ss->sid_ctx)) {
|
---|
464 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
|
---|
465 | SSL_SESSION_free(ss);
|
---|
466 | return 0;
|
---|
467 | }
|
---|
468 | memcpy(ss->sid_ctx, s->sid_ctx, s->sid_ctx_length);
|
---|
469 | ss->sid_ctx_length = s->sid_ctx_length;
|
---|
470 | s->session = ss;
|
---|
471 | ss->ssl_version = s->version;
|
---|
472 | ss->verify_result = X509_V_OK;
|
---|
473 |
|
---|
474 | /* If client supports extended master secret set it in session */
|
---|
475 | if (s->s3.flags & TLS1_FLAGS_RECEIVED_EXTMS)
|
---|
476 | ss->flags |= SSL_SESS_FLAG_EXTMS;
|
---|
477 |
|
---|
478 | return 1;
|
---|
479 | }
|
---|
480 |
|
---|
481 | SSL_SESSION *lookup_sess_in_cache(SSL *s, const unsigned char *sess_id,
|
---|
482 | size_t sess_id_len)
|
---|
483 | {
|
---|
484 | SSL_SESSION *ret = NULL;
|
---|
485 |
|
---|
486 | if ((s->session_ctx->session_cache_mode
|
---|
487 | & SSL_SESS_CACHE_NO_INTERNAL_LOOKUP) == 0) {
|
---|
488 | SSL_SESSION data;
|
---|
489 |
|
---|
490 | data.ssl_version = s->version;
|
---|
491 | if (!ossl_assert(sess_id_len <= SSL_MAX_SSL_SESSION_ID_LENGTH))
|
---|
492 | return NULL;
|
---|
493 |
|
---|
494 | memcpy(data.session_id, sess_id, sess_id_len);
|
---|
495 | data.session_id_length = sess_id_len;
|
---|
496 |
|
---|
497 | if (!CRYPTO_THREAD_read_lock(s->session_ctx->lock))
|
---|
498 | return NULL;
|
---|
499 | ret = lh_SSL_SESSION_retrieve(s->session_ctx->sessions, &data);
|
---|
500 | if (ret != NULL) {
|
---|
501 | /* don't allow other threads to steal it: */
|
---|
502 | SSL_SESSION_up_ref(ret);
|
---|
503 | }
|
---|
504 | CRYPTO_THREAD_unlock(s->session_ctx->lock);
|
---|
505 | if (ret == NULL)
|
---|
506 | tsan_counter(&s->session_ctx->stats.sess_miss);
|
---|
507 | }
|
---|
508 |
|
---|
509 | if (ret == NULL && s->session_ctx->get_session_cb != NULL) {
|
---|
510 | int copy = 1;
|
---|
511 |
|
---|
512 | ret = s->session_ctx->get_session_cb(s, sess_id, sess_id_len, ©);
|
---|
513 |
|
---|
514 | if (ret != NULL) {
|
---|
515 | tsan_counter(&s->session_ctx->stats.sess_cb_hit);
|
---|
516 |
|
---|
517 | /*
|
---|
518 | * Increment reference count now if the session callback asks us
|
---|
519 | * to do so (note that if the session structures returned by the
|
---|
520 | * callback are shared between threads, it must handle the
|
---|
521 | * reference count itself [i.e. copy == 0], or things won't be
|
---|
522 | * thread-safe).
|
---|
523 | */
|
---|
524 | if (copy)
|
---|
525 | SSL_SESSION_up_ref(ret);
|
---|
526 |
|
---|
527 | /*
|
---|
528 | * Add the externally cached session to the internal cache as
|
---|
529 | * well if and only if we are supposed to.
|
---|
530 | */
|
---|
531 | if ((s->session_ctx->session_cache_mode &
|
---|
532 | SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0) {
|
---|
533 | /*
|
---|
534 | * Either return value of SSL_CTX_add_session should not
|
---|
535 | * interrupt the session resumption process. The return
|
---|
536 | * value is intentionally ignored.
|
---|
537 | */
|
---|
538 | (void)SSL_CTX_add_session(s->session_ctx, ret);
|
---|
539 | }
|
---|
540 | }
|
---|
541 | }
|
---|
542 |
|
---|
543 | return ret;
|
---|
544 | }
|
---|
545 |
|
---|
546 | /*-
|
---|
547 | * ssl_get_prev attempts to find an SSL_SESSION to be used to resume this
|
---|
548 | * connection. It is only called by servers.
|
---|
549 | *
|
---|
550 | * hello: The parsed ClientHello data
|
---|
551 | *
|
---|
552 | * Returns:
|
---|
553 | * -1: fatal error
|
---|
554 | * 0: no session found
|
---|
555 | * 1: a session may have been found.
|
---|
556 | *
|
---|
557 | * Side effects:
|
---|
558 | * - If a session is found then s->session is pointed at it (after freeing an
|
---|
559 | * existing session if need be) and s->verify_result is set from the session.
|
---|
560 | * - Both for new and resumed sessions, s->ext.ticket_expected is set to 1
|
---|
561 | * if the server should issue a new session ticket (to 0 otherwise).
|
---|
562 | */
|
---|
563 | int ssl_get_prev_session(SSL *s, CLIENTHELLO_MSG *hello)
|
---|
564 | {
|
---|
565 | /* This is used only by servers. */
|
---|
566 |
|
---|
567 | SSL_SESSION *ret = NULL;
|
---|
568 | int fatal = 0;
|
---|
569 | int try_session_cache = 0;
|
---|
570 | SSL_TICKET_STATUS r;
|
---|
571 |
|
---|
572 | if (SSL_IS_TLS13(s)) {
|
---|
573 | /*
|
---|
574 | * By default we will send a new ticket. This can be overridden in the
|
---|
575 | * ticket processing.
|
---|
576 | */
|
---|
577 | s->ext.ticket_expected = 1;
|
---|
578 | if (!tls_parse_extension(s, TLSEXT_IDX_psk_kex_modes,
|
---|
579 | SSL_EXT_CLIENT_HELLO, hello->pre_proc_exts,
|
---|
580 | NULL, 0)
|
---|
581 | || !tls_parse_extension(s, TLSEXT_IDX_psk, SSL_EXT_CLIENT_HELLO,
|
---|
582 | hello->pre_proc_exts, NULL, 0))
|
---|
583 | return -1;
|
---|
584 |
|
---|
585 | ret = s->session;
|
---|
586 | } else {
|
---|
587 | /* sets s->ext.ticket_expected */
|
---|
588 | r = tls_get_ticket_from_client(s, hello, &ret);
|
---|
589 | switch (r) {
|
---|
590 | case SSL_TICKET_FATAL_ERR_MALLOC:
|
---|
591 | case SSL_TICKET_FATAL_ERR_OTHER:
|
---|
592 | fatal = 1;
|
---|
593 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
|
---|
594 | goto err;
|
---|
595 | case SSL_TICKET_NONE:
|
---|
596 | case SSL_TICKET_EMPTY:
|
---|
597 | if (hello->session_id_len > 0) {
|
---|
598 | try_session_cache = 1;
|
---|
599 | ret = lookup_sess_in_cache(s, hello->session_id,
|
---|
600 | hello->session_id_len);
|
---|
601 | }
|
---|
602 | break;
|
---|
603 | case SSL_TICKET_NO_DECRYPT:
|
---|
604 | case SSL_TICKET_SUCCESS:
|
---|
605 | case SSL_TICKET_SUCCESS_RENEW:
|
---|
606 | break;
|
---|
607 | }
|
---|
608 | }
|
---|
609 |
|
---|
610 | if (ret == NULL)
|
---|
611 | goto err;
|
---|
612 |
|
---|
613 | /* Now ret is non-NULL and we own one of its reference counts. */
|
---|
614 |
|
---|
615 | /* Check TLS version consistency */
|
---|
616 | if (ret->ssl_version != s->version)
|
---|
617 | goto err;
|
---|
618 |
|
---|
619 | if (ret->sid_ctx_length != s->sid_ctx_length
|
---|
620 | || memcmp(ret->sid_ctx, s->sid_ctx, ret->sid_ctx_length)) {
|
---|
621 | /*
|
---|
622 | * We have the session requested by the client, but we don't want to
|
---|
623 | * use it in this context.
|
---|
624 | */
|
---|
625 | goto err; /* treat like cache miss */
|
---|
626 | }
|
---|
627 |
|
---|
628 | if ((s->verify_mode & SSL_VERIFY_PEER) && s->sid_ctx_length == 0) {
|
---|
629 | /*
|
---|
630 | * We can't be sure if this session is being used out of context,
|
---|
631 | * which is especially important for SSL_VERIFY_PEER. The application
|
---|
632 | * should have used SSL[_CTX]_set_session_id_context. For this error
|
---|
633 | * case, we generate an error instead of treating the event like a
|
---|
634 | * cache miss (otherwise it would be easy for applications to
|
---|
635 | * effectively disable the session cache by accident without anyone
|
---|
636 | * noticing).
|
---|
637 | */
|
---|
638 |
|
---|
639 | SSLfatal(s, SSL_AD_INTERNAL_ERROR,
|
---|
640 | SSL_R_SESSION_ID_CONTEXT_UNINITIALIZED);
|
---|
641 | fatal = 1;
|
---|
642 | goto err;
|
---|
643 | }
|
---|
644 |
|
---|
645 | if (sess_timedout(time(NULL), ret)) {
|
---|
646 | tsan_counter(&s->session_ctx->stats.sess_timeout);
|
---|
647 | if (try_session_cache) {
|
---|
648 | /* session was from the cache, so remove it */
|
---|
649 | SSL_CTX_remove_session(s->session_ctx, ret);
|
---|
650 | }
|
---|
651 | goto err;
|
---|
652 | }
|
---|
653 |
|
---|
654 | /* Check extended master secret extension consistency */
|
---|
655 | if (ret->flags & SSL_SESS_FLAG_EXTMS) {
|
---|
656 | /* If old session includes extms, but new does not: abort handshake */
|
---|
657 | if (!(s->s3.flags & TLS1_FLAGS_RECEIVED_EXTMS)) {
|
---|
658 | SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_INCONSISTENT_EXTMS);
|
---|
659 | fatal = 1;
|
---|
660 | goto err;
|
---|
661 | }
|
---|
662 | } else if (s->s3.flags & TLS1_FLAGS_RECEIVED_EXTMS) {
|
---|
663 | /* If new session includes extms, but old does not: do not resume */
|
---|
664 | goto err;
|
---|
665 | }
|
---|
666 |
|
---|
667 | if (!SSL_IS_TLS13(s)) {
|
---|
668 | /* We already did this for TLS1.3 */
|
---|
669 | SSL_SESSION_free(s->session);
|
---|
670 | s->session = ret;
|
---|
671 | }
|
---|
672 |
|
---|
673 | tsan_counter(&s->session_ctx->stats.sess_hit);
|
---|
674 | s->verify_result = s->session->verify_result;
|
---|
675 | return 1;
|
---|
676 |
|
---|
677 | err:
|
---|
678 | if (ret != NULL) {
|
---|
679 | SSL_SESSION_free(ret);
|
---|
680 | /* In TLSv1.3 s->session was already set to ret, so we NULL it out */
|
---|
681 | if (SSL_IS_TLS13(s))
|
---|
682 | s->session = NULL;
|
---|
683 |
|
---|
684 | if (!try_session_cache) {
|
---|
685 | /*
|
---|
686 | * The session was from a ticket, so we should issue a ticket for
|
---|
687 | * the new session
|
---|
688 | */
|
---|
689 | s->ext.ticket_expected = 1;
|
---|
690 | }
|
---|
691 | }
|
---|
692 | if (fatal)
|
---|
693 | return -1;
|
---|
694 |
|
---|
695 | return 0;
|
---|
696 | }
|
---|
697 |
|
---|
698 | int SSL_CTX_add_session(SSL_CTX *ctx, SSL_SESSION *c)
|
---|
699 | {
|
---|
700 | int ret = 0;
|
---|
701 | SSL_SESSION *s;
|
---|
702 |
|
---|
703 | /*
|
---|
704 | * add just 1 reference count for the SSL_CTX's session cache even though
|
---|
705 | * it has two ways of access: each session is in a doubly linked list and
|
---|
706 | * an lhash
|
---|
707 | */
|
---|
708 | SSL_SESSION_up_ref(c);
|
---|
709 | /*
|
---|
710 | * if session c is in already in cache, we take back the increment later
|
---|
711 | */
|
---|
712 |
|
---|
713 | if (!CRYPTO_THREAD_write_lock(ctx->lock)) {
|
---|
714 | SSL_SESSION_free(c);
|
---|
715 | return 0;
|
---|
716 | }
|
---|
717 | s = lh_SSL_SESSION_insert(ctx->sessions, c);
|
---|
718 |
|
---|
719 | /*
|
---|
720 | * s != NULL iff we already had a session with the given PID. In this
|
---|
721 | * case, s == c should hold (then we did not really modify
|
---|
722 | * ctx->sessions), or we're in trouble.
|
---|
723 | */
|
---|
724 | if (s != NULL && s != c) {
|
---|
725 | /* We *are* in trouble ... */
|
---|
726 | SSL_SESSION_list_remove(ctx, s);
|
---|
727 | SSL_SESSION_free(s);
|
---|
728 | /*
|
---|
729 | * ... so pretend the other session did not exist in cache (we cannot
|
---|
730 | * handle two SSL_SESSION structures with identical session ID in the
|
---|
731 | * same cache, which could happen e.g. when two threads concurrently
|
---|
732 | * obtain the same session from an external cache)
|
---|
733 | */
|
---|
734 | s = NULL;
|
---|
735 | } else if (s == NULL &&
|
---|
736 | lh_SSL_SESSION_retrieve(ctx->sessions, c) == NULL) {
|
---|
737 | /* s == NULL can also mean OOM error in lh_SSL_SESSION_insert ... */
|
---|
738 |
|
---|
739 | /*
|
---|
740 | * ... so take back the extra reference and also don't add
|
---|
741 | * the session to the SSL_SESSION_list at this time
|
---|
742 | */
|
---|
743 | s = c;
|
---|
744 | }
|
---|
745 |
|
---|
746 | /* Adjust last used time, and add back into the cache at the appropriate spot */
|
---|
747 | if (ctx->session_cache_mode & SSL_SESS_CACHE_UPDATE_TIME) {
|
---|
748 | c->time = time(NULL);
|
---|
749 | ssl_session_calculate_timeout(c);
|
---|
750 | }
|
---|
751 | SSL_SESSION_list_add(ctx, c);
|
---|
752 |
|
---|
753 | if (s != NULL) {
|
---|
754 | /*
|
---|
755 | * existing cache entry -- decrement previously incremented reference
|
---|
756 | * count because it already takes into account the cache
|
---|
757 | */
|
---|
758 |
|
---|
759 | SSL_SESSION_free(s); /* s == c */
|
---|
760 | ret = 0;
|
---|
761 | } else {
|
---|
762 | /*
|
---|
763 | * new cache entry -- remove old ones if cache has become too large
|
---|
764 | */
|
---|
765 |
|
---|
766 | ret = 1;
|
---|
767 |
|
---|
768 | if (SSL_CTX_sess_get_cache_size(ctx) > 0) {
|
---|
769 | while (SSL_CTX_sess_number(ctx) > SSL_CTX_sess_get_cache_size(ctx)) {
|
---|
770 | if (!remove_session_lock(ctx, ctx->session_cache_tail, 0))
|
---|
771 | break;
|
---|
772 | else
|
---|
773 | tsan_counter(&ctx->stats.sess_cache_full);
|
---|
774 | }
|
---|
775 | }
|
---|
776 | }
|
---|
777 | CRYPTO_THREAD_unlock(ctx->lock);
|
---|
778 | return ret;
|
---|
779 | }
|
---|
780 |
|
---|
781 | int SSL_CTX_remove_session(SSL_CTX *ctx, SSL_SESSION *c)
|
---|
782 | {
|
---|
783 | return remove_session_lock(ctx, c, 1);
|
---|
784 | }
|
---|
785 |
|
---|
786 | static int remove_session_lock(SSL_CTX *ctx, SSL_SESSION *c, int lck)
|
---|
787 | {
|
---|
788 | SSL_SESSION *r;
|
---|
789 | int ret = 0;
|
---|
790 |
|
---|
791 | if ((c != NULL) && (c->session_id_length != 0)) {
|
---|
792 | if (lck) {
|
---|
793 | if (!CRYPTO_THREAD_write_lock(ctx->lock))
|
---|
794 | return 0;
|
---|
795 | }
|
---|
796 | if ((r = lh_SSL_SESSION_retrieve(ctx->sessions, c)) != NULL) {
|
---|
797 | ret = 1;
|
---|
798 | r = lh_SSL_SESSION_delete(ctx->sessions, r);
|
---|
799 | SSL_SESSION_list_remove(ctx, r);
|
---|
800 | }
|
---|
801 | c->not_resumable = 1;
|
---|
802 |
|
---|
803 | if (lck)
|
---|
804 | CRYPTO_THREAD_unlock(ctx->lock);
|
---|
805 |
|
---|
806 | if (ctx->remove_session_cb != NULL)
|
---|
807 | ctx->remove_session_cb(ctx, c);
|
---|
808 |
|
---|
809 | if (ret)
|
---|
810 | SSL_SESSION_free(r);
|
---|
811 | }
|
---|
812 | return ret;
|
---|
813 | }
|
---|
814 |
|
---|
815 | void SSL_SESSION_free(SSL_SESSION *ss)
|
---|
816 | {
|
---|
817 | int i;
|
---|
818 |
|
---|
819 | if (ss == NULL)
|
---|
820 | return;
|
---|
821 | CRYPTO_DOWN_REF(&ss->references, &i, ss->lock);
|
---|
822 | REF_PRINT_COUNT("SSL_SESSION", ss);
|
---|
823 | if (i > 0)
|
---|
824 | return;
|
---|
825 | REF_ASSERT_ISNT(i < 0);
|
---|
826 |
|
---|
827 | CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, ss, &ss->ex_data);
|
---|
828 |
|
---|
829 | OPENSSL_cleanse(ss->master_key, sizeof(ss->master_key));
|
---|
830 | OPENSSL_cleanse(ss->session_id, sizeof(ss->session_id));
|
---|
831 | X509_free(ss->peer);
|
---|
832 | sk_X509_pop_free(ss->peer_chain, X509_free);
|
---|
833 | OPENSSL_free(ss->ext.hostname);
|
---|
834 | OPENSSL_free(ss->ext.tick);
|
---|
835 | #ifndef OPENSSL_NO_PSK
|
---|
836 | OPENSSL_free(ss->psk_identity_hint);
|
---|
837 | OPENSSL_free(ss->psk_identity);
|
---|
838 | #endif
|
---|
839 | #ifndef OPENSSL_NO_SRP
|
---|
840 | OPENSSL_free(ss->srp_username);
|
---|
841 | #endif
|
---|
842 | OPENSSL_free(ss->ext.alpn_selected);
|
---|
843 | OPENSSL_free(ss->ticket_appdata);
|
---|
844 | CRYPTO_THREAD_lock_free(ss->lock);
|
---|
845 | OPENSSL_clear_free(ss, sizeof(*ss));
|
---|
846 | }
|
---|
847 |
|
---|
848 | int SSL_SESSION_up_ref(SSL_SESSION *ss)
|
---|
849 | {
|
---|
850 | int i;
|
---|
851 |
|
---|
852 | if (CRYPTO_UP_REF(&ss->references, &i, ss->lock) <= 0)
|
---|
853 | return 0;
|
---|
854 |
|
---|
855 | REF_PRINT_COUNT("SSL_SESSION", ss);
|
---|
856 | REF_ASSERT_ISNT(i < 2);
|
---|
857 | return ((i > 1) ? 1 : 0);
|
---|
858 | }
|
---|
859 |
|
---|
860 | int SSL_set_session(SSL *s, SSL_SESSION *session)
|
---|
861 | {
|
---|
862 | ssl_clear_bad_session(s);
|
---|
863 | if (s->ctx->method != s->method) {
|
---|
864 | if (!SSL_set_ssl_method(s, s->ctx->method))
|
---|
865 | return 0;
|
---|
866 | }
|
---|
867 |
|
---|
868 | if (session != NULL) {
|
---|
869 | SSL_SESSION_up_ref(session);
|
---|
870 | s->verify_result = session->verify_result;
|
---|
871 | }
|
---|
872 | SSL_SESSION_free(s->session);
|
---|
873 | s->session = session;
|
---|
874 |
|
---|
875 | return 1;
|
---|
876 | }
|
---|
877 |
|
---|
878 | int SSL_SESSION_set1_id(SSL_SESSION *s, const unsigned char *sid,
|
---|
879 | unsigned int sid_len)
|
---|
880 | {
|
---|
881 | if (sid_len > SSL_MAX_SSL_SESSION_ID_LENGTH) {
|
---|
882 | ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_TOO_LONG);
|
---|
883 | return 0;
|
---|
884 | }
|
---|
885 | s->session_id_length = sid_len;
|
---|
886 | if (sid != s->session_id)
|
---|
887 | memcpy(s->session_id, sid, sid_len);
|
---|
888 | return 1;
|
---|
889 | }
|
---|
890 |
|
---|
891 | long SSL_SESSION_set_timeout(SSL_SESSION *s, long t)
|
---|
892 | {
|
---|
893 | time_t new_timeout = (time_t)t;
|
---|
894 |
|
---|
895 | if (s == NULL || t < 0)
|
---|
896 | return 0;
|
---|
897 | if (s->owner != NULL) {
|
---|
898 | if (!CRYPTO_THREAD_write_lock(s->owner->lock))
|
---|
899 | return 0;
|
---|
900 | s->timeout = new_timeout;
|
---|
901 | ssl_session_calculate_timeout(s);
|
---|
902 | SSL_SESSION_list_add(s->owner, s);
|
---|
903 | CRYPTO_THREAD_unlock(s->owner->lock);
|
---|
904 | } else {
|
---|
905 | s->timeout = new_timeout;
|
---|
906 | ssl_session_calculate_timeout(s);
|
---|
907 | }
|
---|
908 | return 1;
|
---|
909 | }
|
---|
910 |
|
---|
911 | long SSL_SESSION_get_timeout(const SSL_SESSION *s)
|
---|
912 | {
|
---|
913 | if (s == NULL)
|
---|
914 | return 0;
|
---|
915 | return (long)s->timeout;
|
---|
916 | }
|
---|
917 |
|
---|
918 | long SSL_SESSION_get_time(const SSL_SESSION *s)
|
---|
919 | {
|
---|
920 | if (s == NULL)
|
---|
921 | return 0;
|
---|
922 | return (long)s->time;
|
---|
923 | }
|
---|
924 |
|
---|
925 | long SSL_SESSION_set_time(SSL_SESSION *s, long t)
|
---|
926 | {
|
---|
927 | time_t new_time = (time_t)t;
|
---|
928 |
|
---|
929 | if (s == NULL)
|
---|
930 | return 0;
|
---|
931 | if (s->owner != NULL) {
|
---|
932 | if (!CRYPTO_THREAD_write_lock(s->owner->lock))
|
---|
933 | return 0;
|
---|
934 | s->time = new_time;
|
---|
935 | ssl_session_calculate_timeout(s);
|
---|
936 | SSL_SESSION_list_add(s->owner, s);
|
---|
937 | CRYPTO_THREAD_unlock(s->owner->lock);
|
---|
938 | } else {
|
---|
939 | s->time = new_time;
|
---|
940 | ssl_session_calculate_timeout(s);
|
---|
941 | }
|
---|
942 | return t;
|
---|
943 | }
|
---|
944 |
|
---|
945 | int SSL_SESSION_get_protocol_version(const SSL_SESSION *s)
|
---|
946 | {
|
---|
947 | return s->ssl_version;
|
---|
948 | }
|
---|
949 |
|
---|
950 | int SSL_SESSION_set_protocol_version(SSL_SESSION *s, int version)
|
---|
951 | {
|
---|
952 | s->ssl_version = version;
|
---|
953 | return 1;
|
---|
954 | }
|
---|
955 |
|
---|
956 | const SSL_CIPHER *SSL_SESSION_get0_cipher(const SSL_SESSION *s)
|
---|
957 | {
|
---|
958 | return s->cipher;
|
---|
959 | }
|
---|
960 |
|
---|
961 | int SSL_SESSION_set_cipher(SSL_SESSION *s, const SSL_CIPHER *cipher)
|
---|
962 | {
|
---|
963 | s->cipher = cipher;
|
---|
964 | return 1;
|
---|
965 | }
|
---|
966 |
|
---|
967 | const char *SSL_SESSION_get0_hostname(const SSL_SESSION *s)
|
---|
968 | {
|
---|
969 | return s->ext.hostname;
|
---|
970 | }
|
---|
971 |
|
---|
972 | int SSL_SESSION_set1_hostname(SSL_SESSION *s, const char *hostname)
|
---|
973 | {
|
---|
974 | OPENSSL_free(s->ext.hostname);
|
---|
975 | if (hostname == NULL) {
|
---|
976 | s->ext.hostname = NULL;
|
---|
977 | return 1;
|
---|
978 | }
|
---|
979 | s->ext.hostname = OPENSSL_strdup(hostname);
|
---|
980 |
|
---|
981 | return s->ext.hostname != NULL;
|
---|
982 | }
|
---|
983 |
|
---|
984 | int SSL_SESSION_has_ticket(const SSL_SESSION *s)
|
---|
985 | {
|
---|
986 | return (s->ext.ticklen > 0) ? 1 : 0;
|
---|
987 | }
|
---|
988 |
|
---|
989 | unsigned long SSL_SESSION_get_ticket_lifetime_hint(const SSL_SESSION *s)
|
---|
990 | {
|
---|
991 | return s->ext.tick_lifetime_hint;
|
---|
992 | }
|
---|
993 |
|
---|
994 | void SSL_SESSION_get0_ticket(const SSL_SESSION *s, const unsigned char **tick,
|
---|
995 | size_t *len)
|
---|
996 | {
|
---|
997 | *len = s->ext.ticklen;
|
---|
998 | if (tick != NULL)
|
---|
999 | *tick = s->ext.tick;
|
---|
1000 | }
|
---|
1001 |
|
---|
1002 | uint32_t SSL_SESSION_get_max_early_data(const SSL_SESSION *s)
|
---|
1003 | {
|
---|
1004 | return s->ext.max_early_data;
|
---|
1005 | }
|
---|
1006 |
|
---|
1007 | int SSL_SESSION_set_max_early_data(SSL_SESSION *s, uint32_t max_early_data)
|
---|
1008 | {
|
---|
1009 | s->ext.max_early_data = max_early_data;
|
---|
1010 |
|
---|
1011 | return 1;
|
---|
1012 | }
|
---|
1013 |
|
---|
1014 | void SSL_SESSION_get0_alpn_selected(const SSL_SESSION *s,
|
---|
1015 | const unsigned char **alpn,
|
---|
1016 | size_t *len)
|
---|
1017 | {
|
---|
1018 | *alpn = s->ext.alpn_selected;
|
---|
1019 | *len = s->ext.alpn_selected_len;
|
---|
1020 | }
|
---|
1021 |
|
---|
1022 | int SSL_SESSION_set1_alpn_selected(SSL_SESSION *s, const unsigned char *alpn,
|
---|
1023 | size_t len)
|
---|
1024 | {
|
---|
1025 | OPENSSL_free(s->ext.alpn_selected);
|
---|
1026 | if (alpn == NULL || len == 0) {
|
---|
1027 | s->ext.alpn_selected = NULL;
|
---|
1028 | s->ext.alpn_selected_len = 0;
|
---|
1029 | return 1;
|
---|
1030 | }
|
---|
1031 | s->ext.alpn_selected = OPENSSL_memdup(alpn, len);
|
---|
1032 | if (s->ext.alpn_selected == NULL) {
|
---|
1033 | s->ext.alpn_selected_len = 0;
|
---|
1034 | return 0;
|
---|
1035 | }
|
---|
1036 | s->ext.alpn_selected_len = len;
|
---|
1037 |
|
---|
1038 | return 1;
|
---|
1039 | }
|
---|
1040 |
|
---|
1041 | X509 *SSL_SESSION_get0_peer(SSL_SESSION *s)
|
---|
1042 | {
|
---|
1043 | return s->peer;
|
---|
1044 | }
|
---|
1045 |
|
---|
1046 | int SSL_SESSION_set1_id_context(SSL_SESSION *s, const unsigned char *sid_ctx,
|
---|
1047 | unsigned int sid_ctx_len)
|
---|
1048 | {
|
---|
1049 | if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
|
---|
1050 | ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
|
---|
1051 | return 0;
|
---|
1052 | }
|
---|
1053 | s->sid_ctx_length = sid_ctx_len;
|
---|
1054 | if (sid_ctx != s->sid_ctx)
|
---|
1055 | memcpy(s->sid_ctx, sid_ctx, sid_ctx_len);
|
---|
1056 |
|
---|
1057 | return 1;
|
---|
1058 | }
|
---|
1059 |
|
---|
1060 | int SSL_SESSION_is_resumable(const SSL_SESSION *s)
|
---|
1061 | {
|
---|
1062 | /*
|
---|
1063 | * In the case of EAP-FAST, we can have a pre-shared "ticket" without a
|
---|
1064 | * session ID.
|
---|
1065 | */
|
---|
1066 | return !s->not_resumable
|
---|
1067 | && (s->session_id_length > 0 || s->ext.ticklen > 0);
|
---|
1068 | }
|
---|
1069 |
|
---|
1070 | long SSL_CTX_set_timeout(SSL_CTX *s, long t)
|
---|
1071 | {
|
---|
1072 | long l;
|
---|
1073 | if (s == NULL)
|
---|
1074 | return 0;
|
---|
1075 | l = s->session_timeout;
|
---|
1076 | s->session_timeout = t;
|
---|
1077 | return l;
|
---|
1078 | }
|
---|
1079 |
|
---|
1080 | long SSL_CTX_get_timeout(const SSL_CTX *s)
|
---|
1081 | {
|
---|
1082 | if (s == NULL)
|
---|
1083 | return 0;
|
---|
1084 | return s->session_timeout;
|
---|
1085 | }
|
---|
1086 |
|
---|
1087 | int SSL_set_session_secret_cb(SSL *s,
|
---|
1088 | tls_session_secret_cb_fn tls_session_secret_cb,
|
---|
1089 | void *arg)
|
---|
1090 | {
|
---|
1091 | if (s == NULL)
|
---|
1092 | return 0;
|
---|
1093 | s->ext.session_secret_cb = tls_session_secret_cb;
|
---|
1094 | s->ext.session_secret_cb_arg = arg;
|
---|
1095 | return 1;
|
---|
1096 | }
|
---|
1097 |
|
---|
1098 | int SSL_set_session_ticket_ext_cb(SSL *s, tls_session_ticket_ext_cb_fn cb,
|
---|
1099 | void *arg)
|
---|
1100 | {
|
---|
1101 | if (s == NULL)
|
---|
1102 | return 0;
|
---|
1103 | s->ext.session_ticket_cb = cb;
|
---|
1104 | s->ext.session_ticket_cb_arg = arg;
|
---|
1105 | return 1;
|
---|
1106 | }
|
---|
1107 |
|
---|
1108 | int SSL_set_session_ticket_ext(SSL *s, void *ext_data, int ext_len)
|
---|
1109 | {
|
---|
1110 | if (s->version >= TLS1_VERSION) {
|
---|
1111 | OPENSSL_free(s->ext.session_ticket);
|
---|
1112 | s->ext.session_ticket = NULL;
|
---|
1113 | s->ext.session_ticket =
|
---|
1114 | OPENSSL_malloc(sizeof(TLS_SESSION_TICKET_EXT) + ext_len);
|
---|
1115 | if (s->ext.session_ticket == NULL) {
|
---|
1116 | ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
|
---|
1117 | return 0;
|
---|
1118 | }
|
---|
1119 |
|
---|
1120 | if (ext_data != NULL) {
|
---|
1121 | s->ext.session_ticket->length = ext_len;
|
---|
1122 | s->ext.session_ticket->data = s->ext.session_ticket + 1;
|
---|
1123 | memcpy(s->ext.session_ticket->data, ext_data, ext_len);
|
---|
1124 | } else {
|
---|
1125 | s->ext.session_ticket->length = 0;
|
---|
1126 | s->ext.session_ticket->data = NULL;
|
---|
1127 | }
|
---|
1128 |
|
---|
1129 | return 1;
|
---|
1130 | }
|
---|
1131 |
|
---|
1132 | return 0;
|
---|
1133 | }
|
---|
1134 |
|
---|
1135 | void SSL_CTX_flush_sessions(SSL_CTX *s, long t)
|
---|
1136 | {
|
---|
1137 | STACK_OF(SSL_SESSION) *sk;
|
---|
1138 | SSL_SESSION *current;
|
---|
1139 | unsigned long i;
|
---|
1140 |
|
---|
1141 | if (!CRYPTO_THREAD_write_lock(s->lock))
|
---|
1142 | return;
|
---|
1143 |
|
---|
1144 | sk = sk_SSL_SESSION_new_null();
|
---|
1145 | i = lh_SSL_SESSION_get_down_load(s->sessions);
|
---|
1146 | lh_SSL_SESSION_set_down_load(s->sessions, 0);
|
---|
1147 |
|
---|
1148 | /*
|
---|
1149 | * Iterate over the list from the back (oldest), and stop
|
---|
1150 | * when a session can no longer be removed.
|
---|
1151 | * Add the session to a temporary list to be freed outside
|
---|
1152 | * the SSL_CTX lock.
|
---|
1153 | * But still do the remove_session_cb() within the lock.
|
---|
1154 | */
|
---|
1155 | while (s->session_cache_tail != NULL) {
|
---|
1156 | current = s->session_cache_tail;
|
---|
1157 | if (t == 0 || sess_timedout((time_t)t, current)) {
|
---|
1158 | lh_SSL_SESSION_delete(s->sessions, current);
|
---|
1159 | SSL_SESSION_list_remove(s, current);
|
---|
1160 | current->not_resumable = 1;
|
---|
1161 | if (s->remove_session_cb != NULL)
|
---|
1162 | s->remove_session_cb(s, current);
|
---|
1163 | /*
|
---|
1164 | * Throw the session on a stack, it's entirely plausible
|
---|
1165 | * that while freeing outside the critical section, the
|
---|
1166 | * session could be re-added, so avoid using the next/prev
|
---|
1167 | * pointers. If the stack failed to create, or the session
|
---|
1168 | * couldn't be put on the stack, just free it here
|
---|
1169 | */
|
---|
1170 | if (sk == NULL || !sk_SSL_SESSION_push(sk, current))
|
---|
1171 | SSL_SESSION_free(current);
|
---|
1172 | } else {
|
---|
1173 | break;
|
---|
1174 | }
|
---|
1175 | }
|
---|
1176 |
|
---|
1177 | lh_SSL_SESSION_set_down_load(s->sessions, i);
|
---|
1178 | CRYPTO_THREAD_unlock(s->lock);
|
---|
1179 |
|
---|
1180 | sk_SSL_SESSION_pop_free(sk, SSL_SESSION_free);
|
---|
1181 | }
|
---|
1182 |
|
---|
1183 | int ssl_clear_bad_session(SSL *s)
|
---|
1184 | {
|
---|
1185 | if ((s->session != NULL) &&
|
---|
1186 | !(s->shutdown & SSL_SENT_SHUTDOWN) &&
|
---|
1187 | !(SSL_in_init(s) || SSL_in_before(s))) {
|
---|
1188 | SSL_CTX_remove_session(s->session_ctx, s->session);
|
---|
1189 | return 1;
|
---|
1190 | } else
|
---|
1191 | return 0;
|
---|
1192 | }
|
---|
1193 |
|
---|
1194 | /* locked by SSL_CTX in the calling function */
|
---|
1195 | static void SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *s)
|
---|
1196 | {
|
---|
1197 | if ((s->next == NULL) || (s->prev == NULL))
|
---|
1198 | return;
|
---|
1199 |
|
---|
1200 | if (s->next == (SSL_SESSION *)&(ctx->session_cache_tail)) {
|
---|
1201 | /* last element in list */
|
---|
1202 | if (s->prev == (SSL_SESSION *)&(ctx->session_cache_head)) {
|
---|
1203 | /* only one element in list */
|
---|
1204 | ctx->session_cache_head = NULL;
|
---|
1205 | ctx->session_cache_tail = NULL;
|
---|
1206 | } else {
|
---|
1207 | ctx->session_cache_tail = s->prev;
|
---|
1208 | s->prev->next = (SSL_SESSION *)&(ctx->session_cache_tail);
|
---|
1209 | }
|
---|
1210 | } else {
|
---|
1211 | if (s->prev == (SSL_SESSION *)&(ctx->session_cache_head)) {
|
---|
1212 | /* first element in list */
|
---|
1213 | ctx->session_cache_head = s->next;
|
---|
1214 | s->next->prev = (SSL_SESSION *)&(ctx->session_cache_head);
|
---|
1215 | } else {
|
---|
1216 | /* middle of list */
|
---|
1217 | s->next->prev = s->prev;
|
---|
1218 | s->prev->next = s->next;
|
---|
1219 | }
|
---|
1220 | }
|
---|
1221 | s->prev = s->next = NULL;
|
---|
1222 | s->owner = NULL;
|
---|
1223 | }
|
---|
1224 |
|
---|
1225 | static void SSL_SESSION_list_add(SSL_CTX *ctx, SSL_SESSION *s)
|
---|
1226 | {
|
---|
1227 | SSL_SESSION *next;
|
---|
1228 |
|
---|
1229 | if ((s->next != NULL) && (s->prev != NULL))
|
---|
1230 | SSL_SESSION_list_remove(ctx, s);
|
---|
1231 |
|
---|
1232 | if (ctx->session_cache_head == NULL) {
|
---|
1233 | ctx->session_cache_head = s;
|
---|
1234 | ctx->session_cache_tail = s;
|
---|
1235 | s->prev = (SSL_SESSION *)&(ctx->session_cache_head);
|
---|
1236 | s->next = (SSL_SESSION *)&(ctx->session_cache_tail);
|
---|
1237 | } else {
|
---|
1238 | if (timeoutcmp(s, ctx->session_cache_head) >= 0) {
|
---|
1239 | /*
|
---|
1240 | * if we timeout after (or the same time as) the first
|
---|
1241 | * session, put us first - usual case
|
---|
1242 | */
|
---|
1243 | s->next = ctx->session_cache_head;
|
---|
1244 | s->next->prev = s;
|
---|
1245 | s->prev = (SSL_SESSION *)&(ctx->session_cache_head);
|
---|
1246 | ctx->session_cache_head = s;
|
---|
1247 | } else if (timeoutcmp(s, ctx->session_cache_tail) < 0) {
|
---|
1248 | /* if we timeout before the last session, put us last */
|
---|
1249 | s->prev = ctx->session_cache_tail;
|
---|
1250 | s->prev->next = s;
|
---|
1251 | s->next = (SSL_SESSION *)&(ctx->session_cache_tail);
|
---|
1252 | ctx->session_cache_tail = s;
|
---|
1253 | } else {
|
---|
1254 | /*
|
---|
1255 | * we timeout somewhere in-between - if there is only
|
---|
1256 | * one session in the cache it will be caught above
|
---|
1257 | */
|
---|
1258 | next = ctx->session_cache_head->next;
|
---|
1259 | while (next != (SSL_SESSION*)&(ctx->session_cache_tail)) {
|
---|
1260 | if (timeoutcmp(s, next) >= 0) {
|
---|
1261 | s->next = next;
|
---|
1262 | s->prev = next->prev;
|
---|
1263 | next->prev->next = s;
|
---|
1264 | next->prev = s;
|
---|
1265 | break;
|
---|
1266 | }
|
---|
1267 | next = next->next;
|
---|
1268 | }
|
---|
1269 | }
|
---|
1270 | }
|
---|
1271 | s->owner = ctx;
|
---|
1272 | }
|
---|
1273 |
|
---|
1274 | void SSL_CTX_sess_set_new_cb(SSL_CTX *ctx,
|
---|
1275 | int (*cb) (struct ssl_st *ssl, SSL_SESSION *sess))
|
---|
1276 | {
|
---|
1277 | ctx->new_session_cb = cb;
|
---|
1278 | }
|
---|
1279 |
|
---|
1280 | int (*SSL_CTX_sess_get_new_cb(SSL_CTX *ctx)) (SSL *ssl, SSL_SESSION *sess) {
|
---|
1281 | return ctx->new_session_cb;
|
---|
1282 | }
|
---|
1283 |
|
---|
1284 | void SSL_CTX_sess_set_remove_cb(SSL_CTX *ctx,
|
---|
1285 | void (*cb) (SSL_CTX *ctx, SSL_SESSION *sess))
|
---|
1286 | {
|
---|
1287 | ctx->remove_session_cb = cb;
|
---|
1288 | }
|
---|
1289 |
|
---|
1290 | void (*SSL_CTX_sess_get_remove_cb(SSL_CTX *ctx)) (SSL_CTX *ctx,
|
---|
1291 | SSL_SESSION *sess) {
|
---|
1292 | return ctx->remove_session_cb;
|
---|
1293 | }
|
---|
1294 |
|
---|
1295 | void SSL_CTX_sess_set_get_cb(SSL_CTX *ctx,
|
---|
1296 | SSL_SESSION *(*cb) (struct ssl_st *ssl,
|
---|
1297 | const unsigned char *data,
|
---|
1298 | int len, int *copy))
|
---|
1299 | {
|
---|
1300 | ctx->get_session_cb = cb;
|
---|
1301 | }
|
---|
1302 |
|
---|
1303 | SSL_SESSION *(*SSL_CTX_sess_get_get_cb(SSL_CTX *ctx)) (SSL *ssl,
|
---|
1304 | const unsigned char
|
---|
1305 | *data, int len,
|
---|
1306 | int *copy) {
|
---|
1307 | return ctx->get_session_cb;
|
---|
1308 | }
|
---|
1309 |
|
---|
1310 | void SSL_CTX_set_info_callback(SSL_CTX *ctx,
|
---|
1311 | void (*cb) (const SSL *ssl, int type, int val))
|
---|
1312 | {
|
---|
1313 | ctx->info_callback = cb;
|
---|
1314 | }
|
---|
1315 |
|
---|
1316 | void (*SSL_CTX_get_info_callback(SSL_CTX *ctx)) (const SSL *ssl, int type,
|
---|
1317 | int val) {
|
---|
1318 | return ctx->info_callback;
|
---|
1319 | }
|
---|
1320 |
|
---|
1321 | void SSL_CTX_set_client_cert_cb(SSL_CTX *ctx,
|
---|
1322 | int (*cb) (SSL *ssl, X509 **x509,
|
---|
1323 | EVP_PKEY **pkey))
|
---|
1324 | {
|
---|
1325 | ctx->client_cert_cb = cb;
|
---|
1326 | }
|
---|
1327 |
|
---|
1328 | int (*SSL_CTX_get_client_cert_cb(SSL_CTX *ctx)) (SSL *ssl, X509 **x509,
|
---|
1329 | EVP_PKEY **pkey) {
|
---|
1330 | return ctx->client_cert_cb;
|
---|
1331 | }
|
---|
1332 |
|
---|
1333 | void SSL_CTX_set_cookie_generate_cb(SSL_CTX *ctx,
|
---|
1334 | int (*cb) (SSL *ssl,
|
---|
1335 | unsigned char *cookie,
|
---|
1336 | unsigned int *cookie_len))
|
---|
1337 | {
|
---|
1338 | ctx->app_gen_cookie_cb = cb;
|
---|
1339 | }
|
---|
1340 |
|
---|
1341 | void SSL_CTX_set_cookie_verify_cb(SSL_CTX *ctx,
|
---|
1342 | int (*cb) (SSL *ssl,
|
---|
1343 | const unsigned char *cookie,
|
---|
1344 | unsigned int cookie_len))
|
---|
1345 | {
|
---|
1346 | ctx->app_verify_cookie_cb = cb;
|
---|
1347 | }
|
---|
1348 |
|
---|
1349 | int SSL_SESSION_set1_ticket_appdata(SSL_SESSION *ss, const void *data, size_t len)
|
---|
1350 | {
|
---|
1351 | OPENSSL_free(ss->ticket_appdata);
|
---|
1352 | ss->ticket_appdata_len = 0;
|
---|
1353 | if (data == NULL || len == 0) {
|
---|
1354 | ss->ticket_appdata = NULL;
|
---|
1355 | return 1;
|
---|
1356 | }
|
---|
1357 | ss->ticket_appdata = OPENSSL_memdup(data, len);
|
---|
1358 | if (ss->ticket_appdata != NULL) {
|
---|
1359 | ss->ticket_appdata_len = len;
|
---|
1360 | return 1;
|
---|
1361 | }
|
---|
1362 | return 0;
|
---|
1363 | }
|
---|
1364 |
|
---|
1365 | int SSL_SESSION_get0_ticket_appdata(SSL_SESSION *ss, void **data, size_t *len)
|
---|
1366 | {
|
---|
1367 | *data = ss->ticket_appdata;
|
---|
1368 | *len = ss->ticket_appdata_len;
|
---|
1369 | return 1;
|
---|
1370 | }
|
---|
1371 |
|
---|
1372 | void SSL_CTX_set_stateless_cookie_generate_cb(
|
---|
1373 | SSL_CTX *ctx,
|
---|
1374 | int (*cb) (SSL *ssl,
|
---|
1375 | unsigned char *cookie,
|
---|
1376 | size_t *cookie_len))
|
---|
1377 | {
|
---|
1378 | ctx->gen_stateless_cookie_cb = cb;
|
---|
1379 | }
|
---|
1380 |
|
---|
1381 | void SSL_CTX_set_stateless_cookie_verify_cb(
|
---|
1382 | SSL_CTX *ctx,
|
---|
1383 | int (*cb) (SSL *ssl,
|
---|
1384 | const unsigned char *cookie,
|
---|
1385 | size_t cookie_len))
|
---|
1386 | {
|
---|
1387 | ctx->verify_stateless_cookie_cb = cb;
|
---|
1388 | }
|
---|
1389 |
|
---|
1390 | IMPLEMENT_PEM_rw(SSL_SESSION, SSL_SESSION, PEM_STRING_SSL_SESSION, SSL_SESSION)
|
---|