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1 /* ssl/ssl_asn1.c */ |
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2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
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3 * All rights reserved. |
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4 * |
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5 * This package is an SSL implementation written |
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6 * by Eric Young (eay@cryptsoft.com). |
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7 * The implementation was written so as to conform with Netscapes SSL. |
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8 * |
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9 * This library is free for commercial and non-commercial use as long as |
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10 * the following conditions are aheared to. The following conditions |
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11 * apply to all code found in this distribution, be it the RC4, RSA, |
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12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation |
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13 * included with this distribution is covered by the same copyright terms |
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14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). |
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15 * |
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16 * Copyright remains Eric Young's, and as such any Copyright notices in |
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17 * the code are not to be removed. |
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18 * If this package is used in a product, Eric Young should be given attribution |
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19 * as the author of the parts of the library used. |
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20 * This can be in the form of a textual message at program startup or |
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21 * in documentation (online or textual) provided with the package. |
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22 * |
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23 * Redistribution and use in source and binary forms, with or without |
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24 * modification, are permitted provided that the following conditions |
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25 * are met: |
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26 * 1. Redistributions of source code must retain the copyright |
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27 * notice, this list of conditions and the following disclaimer. |
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28 * 2. Redistributions in binary form must reproduce the above copyright |
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29 * notice, this list of conditions and the following disclaimer in the |
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30 * documentation and/or other materials provided with the distribution. |
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31 * 3. All advertising materials mentioning features or use of this software |
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32 * must display the following acknowledgement: |
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33 * "This product includes cryptographic software written by |
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34 * Eric Young (eay@cryptsoft.com)" |
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35 * The word 'cryptographic' can be left out if the rouines from the library |
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36 * being used are not cryptographic related :-). |
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37 * 4. If you include any Windows specific code (or a derivative thereof) from |
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38 * the apps directory (application code) you must include an acknowledgement: |
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39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" |
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40 * |
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41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
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42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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51 * SUCH DAMAGE. |
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52 * |
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53 * The licence and distribution terms for any publically available version or |
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54 * derivative of this code cannot be changed. i.e. this code cannot simply be |
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55 * copied and put under another distribution licence |
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56 * [including the GNU Public Licence.] |
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57 */ |
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58 |
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59 #include <stdio.h> |
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60 #include <stdlib.h> |
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61 #include "ssl_locl.h" |
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62 #include <openssl/asn1_mac.h> |
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63 #include <openssl/objects.h> |
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64 #include <openssl/x509.h> |
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65 |
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66 typedef struct ssl_session_asn1_st |
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67 { |
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68 ASN1_INTEGER version; |
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69 ASN1_INTEGER ssl_version; |
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70 ASN1_OCTET_STRING cipher; |
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71 ASN1_OCTET_STRING master_key; |
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72 ASN1_OCTET_STRING session_id; |
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73 ASN1_OCTET_STRING session_id_context; |
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74 ASN1_OCTET_STRING key_arg; |
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75 #ifndef OPENSSL_NO_KRB5 |
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76 ASN1_OCTET_STRING krb5_princ; |
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77 #endif /* OPENSSL_NO_KRB5 */ |
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78 ASN1_INTEGER time; |
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79 ASN1_INTEGER timeout; |
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80 ASN1_INTEGER verify_result; |
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81 } SSL_SESSION_ASN1; |
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82 |
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83 EXPORT_C int i2d_SSL_SESSION(SSL_SESSION *in, unsigned char **pp) |
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84 { |
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85 #define LSIZE2 (sizeof(long)*2) |
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86 int v1=0,v2=0,v3=0,v4=0,v5=0; |
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87 unsigned char buf[4],ibuf1[LSIZE2],ibuf2[LSIZE2]; |
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88 unsigned char ibuf3[LSIZE2],ibuf4[LSIZE2],ibuf5[LSIZE2]; |
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89 long l; |
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90 SSL_SESSION_ASN1 a; |
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91 M_ASN1_I2D_vars(in); |
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92 |
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93 if ((in == NULL) || ((in->cipher == NULL) && (in->cipher_id == 0))) |
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94 return(0); |
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95 |
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96 /* Note that I cheat in the following 2 assignments. I know |
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97 * that if the ASN1_INTEGER passed to ASN1_INTEGER_set |
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98 * is > sizeof(long)+1, the buffer will not be re-OPENSSL_malloc()ed. |
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99 * This is a bit evil but makes things simple, no dynamic allocation |
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100 * to clean up :-) */ |
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101 a.version.length=LSIZE2; |
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102 a.version.type=V_ASN1_INTEGER; |
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103 a.version.data=ibuf1; |
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104 ASN1_INTEGER_set(&(a.version),SSL_SESSION_ASN1_VERSION); |
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105 |
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106 a.ssl_version.length=LSIZE2; |
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107 a.ssl_version.type=V_ASN1_INTEGER; |
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108 a.ssl_version.data=ibuf2; |
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109 ASN1_INTEGER_set(&(a.ssl_version),in->ssl_version); |
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110 |
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111 a.cipher.type=V_ASN1_OCTET_STRING; |
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112 a.cipher.data=buf; |
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113 |
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114 if (in->cipher == NULL) |
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115 l=in->cipher_id; |
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116 else |
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117 l=in->cipher->id; |
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118 if (in->ssl_version == SSL2_VERSION) |
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119 { |
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120 a.cipher.length=3; |
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121 buf[0]=((unsigned char)(l>>16L))&0xff; |
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122 buf[1]=((unsigned char)(l>> 8L))&0xff; |
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123 buf[2]=((unsigned char)(l ))&0xff; |
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124 } |
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125 else |
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126 { |
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127 a.cipher.length=2; |
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128 buf[0]=((unsigned char)(l>>8L))&0xff; |
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129 buf[1]=((unsigned char)(l ))&0xff; |
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130 } |
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131 |
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132 a.master_key.length=in->master_key_length; |
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133 a.master_key.type=V_ASN1_OCTET_STRING; |
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134 a.master_key.data=in->master_key; |
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135 |
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136 a.session_id.length=in->session_id_length; |
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137 a.session_id.type=V_ASN1_OCTET_STRING; |
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138 a.session_id.data=in->session_id; |
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139 |
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140 a.session_id_context.length=in->sid_ctx_length; |
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141 a.session_id_context.type=V_ASN1_OCTET_STRING; |
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142 a.session_id_context.data=in->sid_ctx; |
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143 |
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144 a.key_arg.length=in->key_arg_length; |
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145 a.key_arg.type=V_ASN1_OCTET_STRING; |
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146 a.key_arg.data=in->key_arg; |
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147 |
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148 #ifndef OPENSSL_NO_KRB5 |
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149 if (in->krb5_client_princ_len) |
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150 { |
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151 a.krb5_princ.length=in->krb5_client_princ_len; |
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152 a.krb5_princ.type=V_ASN1_OCTET_STRING; |
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153 a.krb5_princ.data=in->krb5_client_princ; |
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154 } |
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155 #endif /* OPENSSL_NO_KRB5 */ |
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156 |
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157 if (in->time != 0L) |
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158 { |
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159 a.time.length=LSIZE2; |
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160 a.time.type=V_ASN1_INTEGER; |
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161 a.time.data=ibuf3; |
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162 ASN1_INTEGER_set(&(a.time),in->time); |
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163 } |
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164 |
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165 if (in->timeout != 0L) |
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166 { |
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167 a.timeout.length=LSIZE2; |
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168 a.timeout.type=V_ASN1_INTEGER; |
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169 a.timeout.data=ibuf4; |
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170 ASN1_INTEGER_set(&(a.timeout),in->timeout); |
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171 } |
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172 |
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173 if (in->verify_result != X509_V_OK) |
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174 { |
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175 a.verify_result.length=LSIZE2; |
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176 a.verify_result.type=V_ASN1_INTEGER; |
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177 a.verify_result.data=ibuf5; |
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178 ASN1_INTEGER_set(&a.verify_result,in->verify_result); |
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179 } |
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180 |
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181 M_ASN1_I2D_len(&(a.version), i2d_ASN1_INTEGER); |
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182 M_ASN1_I2D_len(&(a.ssl_version), i2d_ASN1_INTEGER); |
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183 M_ASN1_I2D_len(&(a.cipher), i2d_ASN1_OCTET_STRING); |
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184 M_ASN1_I2D_len(&(a.session_id), i2d_ASN1_OCTET_STRING); |
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185 M_ASN1_I2D_len(&(a.master_key), i2d_ASN1_OCTET_STRING); |
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186 #ifndef OPENSSL_NO_KRB5 |
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187 if (in->krb5_client_princ_len) |
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188 M_ASN1_I2D_len(&(a.krb5_princ), i2d_ASN1_OCTET_STRING); |
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189 #endif /* OPENSSL_NO_KRB5 */ |
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190 if (in->key_arg_length > 0) |
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191 M_ASN1_I2D_len_IMP_opt(&(a.key_arg),i2d_ASN1_OCTET_STRING); |
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192 if (in->time != 0L) |
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193 M_ASN1_I2D_len_EXP_opt(&(a.time),i2d_ASN1_INTEGER,1,v1); |
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194 if (in->timeout != 0L) |
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195 M_ASN1_I2D_len_EXP_opt(&(a.timeout),i2d_ASN1_INTEGER,2,v2); |
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196 if (in->peer != NULL) |
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197 M_ASN1_I2D_len_EXP_opt(in->peer,i2d_X509,3,v3); |
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198 M_ASN1_I2D_len_EXP_opt(&a.session_id_context,i2d_ASN1_OCTET_STRING,4,v4); |
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199 if (in->verify_result != X509_V_OK) |
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200 M_ASN1_I2D_len_EXP_opt(&(a.verify_result),i2d_ASN1_INTEGER,5,v5); |
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201 |
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202 M_ASN1_I2D_seq_total(); |
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203 |
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204 M_ASN1_I2D_put(&(a.version), i2d_ASN1_INTEGER); |
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205 M_ASN1_I2D_put(&(a.ssl_version), i2d_ASN1_INTEGER); |
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206 M_ASN1_I2D_put(&(a.cipher), i2d_ASN1_OCTET_STRING); |
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207 M_ASN1_I2D_put(&(a.session_id), i2d_ASN1_OCTET_STRING); |
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208 M_ASN1_I2D_put(&(a.master_key), i2d_ASN1_OCTET_STRING); |
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209 #ifndef OPENSSL_NO_KRB5 |
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210 if (in->krb5_client_princ_len) |
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211 M_ASN1_I2D_put(&(a.krb5_princ), i2d_ASN1_OCTET_STRING); |
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212 #endif /* OPENSSL_NO_KRB5 */ |
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213 if (in->key_arg_length > 0) |
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214 M_ASN1_I2D_put_IMP_opt(&(a.key_arg),i2d_ASN1_OCTET_STRING,0); |
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215 if (in->time != 0L) |
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216 M_ASN1_I2D_put_EXP_opt(&(a.time),i2d_ASN1_INTEGER,1,v1); |
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217 if (in->timeout != 0L) |
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218 M_ASN1_I2D_put_EXP_opt(&(a.timeout),i2d_ASN1_INTEGER,2,v2); |
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219 if (in->peer != NULL) |
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220 M_ASN1_I2D_put_EXP_opt(in->peer,i2d_X509,3,v3); |
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221 M_ASN1_I2D_put_EXP_opt(&a.session_id_context,i2d_ASN1_OCTET_STRING,4, |
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222 v4); |
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223 if (in->verify_result != X509_V_OK) |
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224 M_ASN1_I2D_put_EXP_opt(&a.verify_result,i2d_ASN1_INTEGER,5,v5); |
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225 M_ASN1_I2D_finish(); |
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226 } |
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227 |
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228 EXPORT_C SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const unsigned char **pp, |
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229 long length) |
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230 { |
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231 int version,ssl_version=0,i; |
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232 long id; |
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233 ASN1_INTEGER ai,*aip; |
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234 ASN1_OCTET_STRING os,*osp; |
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235 M_ASN1_D2I_vars(a,SSL_SESSION *,SSL_SESSION_new); |
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236 |
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237 aip= &ai; |
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238 osp= &os; |
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239 |
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240 M_ASN1_D2I_Init(); |
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241 M_ASN1_D2I_start_sequence(); |
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242 |
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243 ai.data=NULL; ai.length=0; |
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244 M_ASN1_D2I_get_x(ASN1_INTEGER,aip,d2i_ASN1_INTEGER); |
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245 version=(int)ASN1_INTEGER_get(aip); |
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246 if (ai.data != NULL) { OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; } |
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247 |
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248 /* we don't care about the version right now :-) */ |
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249 M_ASN1_D2I_get_x(ASN1_INTEGER,aip,d2i_ASN1_INTEGER); |
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250 ssl_version=(int)ASN1_INTEGER_get(aip); |
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251 ret->ssl_version=ssl_version; |
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252 if (ai.data != NULL) { OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; } |
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253 |
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254 os.data=NULL; os.length=0; |
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255 M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING); |
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256 if (ssl_version == SSL2_VERSION) |
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257 { |
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258 if (os.length != 3) |
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259 { |
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260 c.error=SSL_R_CIPHER_CODE_WRONG_LENGTH; |
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261 goto err; |
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262 } |
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263 id=0x02000000L| |
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264 ((unsigned long)os.data[0]<<16L)| |
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265 ((unsigned long)os.data[1]<< 8L)| |
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266 (unsigned long)os.data[2]; |
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267 } |
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268 else if ((ssl_version>>8) == SSL3_VERSION_MAJOR) |
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269 { |
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270 if (os.length != 2) |
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271 { |
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272 c.error=SSL_R_CIPHER_CODE_WRONG_LENGTH; |
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273 goto err; |
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274 } |
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275 id=0x03000000L| |
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276 ((unsigned long)os.data[0]<<8L)| |
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277 (unsigned long)os.data[1]; |
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278 } |
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279 else |
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280 { |
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281 SSLerr(SSL_F_D2I_SSL_SESSION,SSL_R_UNKNOWN_SSL_VERSION); |
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282 return(NULL); |
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283 } |
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284 |
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285 ret->cipher=NULL; |
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286 ret->cipher_id=id; |
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287 |
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288 M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING); |
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289 if ((ssl_version>>8) == SSL3_VERSION_MAJOR) |
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290 i=SSL3_MAX_SSL_SESSION_ID_LENGTH; |
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291 else /* if (ssl_version>>8 == SSL2_VERSION_MAJOR) */ |
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292 i=SSL2_MAX_SSL_SESSION_ID_LENGTH; |
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293 |
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294 if (os.length > i) |
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295 os.length = i; |
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296 if (os.length > (int)sizeof(ret->session_id)) /* can't happen */ |
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297 os.length = sizeof(ret->session_id); |
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298 |
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299 ret->session_id_length=os.length; |
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300 OPENSSL_assert(os.length <= (int)sizeof(ret->session_id)); |
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301 memcpy(ret->session_id,os.data,os.length); |
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302 |
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303 M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING); |
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304 if (ret->master_key_length > SSL_MAX_MASTER_KEY_LENGTH) |
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305 ret->master_key_length=SSL_MAX_MASTER_KEY_LENGTH; |
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306 else |
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307 ret->master_key_length=os.length; |
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308 memcpy(ret->master_key,os.data,ret->master_key_length); |
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309 |
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310 os.length=0; |
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311 |
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312 #ifndef OPENSSL_NO_KRB5 |
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313 os.length=0; |
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314 M_ASN1_D2I_get_opt(osp,d2i_ASN1_OCTET_STRING,V_ASN1_OCTET_STRING); |
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315 if (os.data) |
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316 { |
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317 if (os.length > SSL_MAX_KRB5_PRINCIPAL_LENGTH) |
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318 ret->krb5_client_princ_len=0; |
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319 else |
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320 ret->krb5_client_princ_len=os.length; |
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321 memcpy(ret->krb5_client_princ,os.data,ret->krb5_client_princ_len); |
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322 OPENSSL_free(os.data); |
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323 os.data = NULL; |
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324 os.length = 0; |
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325 } |
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326 else |
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327 ret->krb5_client_princ_len=0; |
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328 #endif /* OPENSSL_NO_KRB5 */ |
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329 |
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330 M_ASN1_D2I_get_IMP_opt(osp,d2i_ASN1_OCTET_STRING,0,V_ASN1_OCTET_STRING); |
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331 if (os.length > SSL_MAX_KEY_ARG_LENGTH) |
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332 ret->key_arg_length=SSL_MAX_KEY_ARG_LENGTH; |
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333 else |
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334 ret->key_arg_length=os.length; |
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335 memcpy(ret->key_arg,os.data,ret->key_arg_length); |
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336 if (os.data != NULL) OPENSSL_free(os.data); |
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337 |
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338 ai.length=0; |
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339 M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,1); |
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340 if (ai.data != NULL) |
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341 { |
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342 ret->time=ASN1_INTEGER_get(aip); |
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343 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; |
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344 } |
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345 else |
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346 ret->time=(unsigned long)time(NULL); |
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347 |
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348 ai.length=0; |
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349 M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,2); |
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350 if (ai.data != NULL) |
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351 { |
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352 ret->timeout=ASN1_INTEGER_get(aip); |
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353 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; |
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354 } |
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355 else |
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356 ret->timeout=3; |
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357 |
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358 if (ret->peer != NULL) |
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359 { |
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360 X509_free(ret->peer); |
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361 ret->peer=NULL; |
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362 } |
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363 M_ASN1_D2I_get_EXP_opt(ret->peer,d2i_X509,3); |
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364 |
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365 os.length=0; |
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366 os.data=NULL; |
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367 M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,4); |
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368 |
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369 if(os.data != NULL) |
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370 { |
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371 if (os.length > SSL_MAX_SID_CTX_LENGTH) |
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372 { |
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373 ret->sid_ctx_length=os.length; |
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374 SSLerr(SSL_F_D2I_SSL_SESSION,SSL_R_BAD_LENGTH); |
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375 } |
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376 else |
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377 { |
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378 ret->sid_ctx_length=os.length; |
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379 memcpy(ret->sid_ctx,os.data,os.length); |
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380 } |
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381 OPENSSL_free(os.data); os.data=NULL; os.length=0; |
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382 } |
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383 else |
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384 ret->sid_ctx_length=0; |
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385 |
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386 ai.length=0; |
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387 M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,5); |
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388 if (ai.data != NULL) |
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389 { |
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390 ret->verify_result=ASN1_INTEGER_get(aip); |
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391 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; |
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392 } |
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393 else |
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394 ret->verify_result=X509_V_OK; |
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395 |
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396 |
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397 M_ASN1_D2I_Finish(a,SSL_SESSION_free,SSL_F_D2I_SSL_SESSION); |
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398 } |