1 | /***************************************************************************
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2 | * _ _ ____ _
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3 | * Project ___| | | | _ \| |
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4 | * / __| | | | |_) | |
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5 | * | (__| |_| | _ <| |___
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6 | * \___|\___/|_| \_\_____|
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7 | *
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8 | * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
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9 | *
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10 | * This software is licensed as described in the file COPYING, which
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11 | * you should have received as part of this distribution. The terms
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12 | * are also available at https://curl.haxx.se/docs/copyright.html.
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13 | *
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14 | * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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15 | * copies of the Software, and permit persons to whom the Software is
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16 | * furnished to do so, under the terms of the COPYING file.
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17 | *
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18 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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19 | * KIND, either express or implied.
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20 | *
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21 | ***************************************************************************/
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22 |
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23 | #include "curl_setup.h"
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24 |
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25 | #ifdef USE_GSKIT
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26 |
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27 | #include <gskssl.h>
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28 | #include <qsoasync.h>
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29 |
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30 | /* Some symbols are undefined/unsupported on OS400 versions < V7R1. */
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31 | #ifndef GSK_SSL_EXTN_SERVERNAME_REQUEST
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32 | #define GSK_SSL_EXTN_SERVERNAME_REQUEST 230
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33 | #endif
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34 |
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35 | #ifndef GSK_TLSV10_CIPHER_SPECS
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36 | #define GSK_TLSV10_CIPHER_SPECS 236
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37 | #endif
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38 |
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39 | #ifndef GSK_TLSV11_CIPHER_SPECS
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40 | #define GSK_TLSV11_CIPHER_SPECS 237
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41 | #endif
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42 |
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43 | #ifndef GSK_TLSV12_CIPHER_SPECS
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44 | #define GSK_TLSV12_CIPHER_SPECS 238
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45 | #endif
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46 |
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47 | #ifndef GSK_PROTOCOL_TLSV11
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48 | #define GSK_PROTOCOL_TLSV11 437
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49 | #endif
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50 |
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51 | #ifndef GSK_PROTOCOL_TLSV12
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52 | #define GSK_PROTOCOL_TLSV12 438
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53 | #endif
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54 |
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55 | #ifndef GSK_FALSE
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56 | #define GSK_FALSE 0
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57 | #endif
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58 |
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59 | #ifndef GSK_TRUE
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60 | #define GSK_TRUE 1
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61 | #endif
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62 |
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63 |
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64 | #ifdef HAVE_LIMITS_H
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65 | # include <limits.h>
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66 | #endif
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67 |
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68 | #include <curl/curl.h>
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69 | #include "urldata.h"
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70 | #include "sendf.h"
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71 | #include "gskit.h"
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72 | #include "vtls.h"
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73 | #include "connect.h" /* for the connect timeout */
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74 | #include "select.h"
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75 | #include "strcase.h"
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76 | #include "x509asn1.h"
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77 | #include "curl_printf.h"
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78 |
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79 | #include "curl_memory.h"
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80 | /* The last #include file should be: */
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81 | #include "memdebug.h"
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82 |
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83 |
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84 | /* Directions. */
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85 | #define SOS_READ 0x01
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86 | #define SOS_WRITE 0x02
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87 |
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88 | /* SSL version flags. */
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89 | #define CURL_GSKPROTO_SSLV2 0
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90 | #define CURL_GSKPROTO_SSLV2_MASK (1 << CURL_GSKPROTO_SSLV2)
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91 | #define CURL_GSKPROTO_SSLV3 1
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92 | #define CURL_GSKPROTO_SSLV3_MASK (1 << CURL_GSKPROTO_SSLV3)
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93 | #define CURL_GSKPROTO_TLSV10 2
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94 | #define CURL_GSKPROTO_TLSV10_MASK (1 << CURL_GSKPROTO_TLSV10)
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95 | #define CURL_GSKPROTO_TLSV11 3
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96 | #define CURL_GSKPROTO_TLSV11_MASK (1 << CURL_GSKPROTO_TLSV11)
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97 | #define CURL_GSKPROTO_TLSV12 4
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98 | #define CURL_GSKPROTO_TLSV12_MASK (1 << CURL_GSKPROTO_TLSV12)
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99 | #define CURL_GSKPROTO_LAST 5
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100 |
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101 | struct ssl_backend_data {
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102 | gsk_handle handle;
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103 | int iocport;
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104 | int localfd;
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105 | int remotefd;
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106 | };
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107 |
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108 | #define BACKEND connssl->backend
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109 |
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110 | /* Supported ciphers. */
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111 | typedef struct {
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112 | const char *name; /* Cipher name. */
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113 | const char *gsktoken; /* Corresponding token for GSKit String. */
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114 | unsigned int versions; /* SSL version flags. */
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115 | } gskit_cipher;
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116 |
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117 | static const gskit_cipher ciphertable[] = {
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118 | { "null-md5", "01",
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119 | CURL_GSKPROTO_SSLV3_MASK | CURL_GSKPROTO_TLSV10_MASK |
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120 | CURL_GSKPROTO_TLSV11_MASK | CURL_GSKPROTO_TLSV12_MASK },
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121 | { "null-sha", "02",
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122 | CURL_GSKPROTO_SSLV3_MASK | CURL_GSKPROTO_TLSV10_MASK |
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123 | CURL_GSKPROTO_TLSV11_MASK | CURL_GSKPROTO_TLSV12_MASK },
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124 | { "exp-rc4-md5", "03",
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125 | CURL_GSKPROTO_SSLV3_MASK | CURL_GSKPROTO_TLSV10_MASK },
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126 | { "rc4-md5", "04",
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127 | CURL_GSKPROTO_SSLV3_MASK | CURL_GSKPROTO_TLSV10_MASK |
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128 | CURL_GSKPROTO_TLSV11_MASK | CURL_GSKPROTO_TLSV12_MASK },
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129 | { "rc4-sha", "05",
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130 | CURL_GSKPROTO_SSLV3_MASK | CURL_GSKPROTO_TLSV10_MASK |
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131 | CURL_GSKPROTO_TLSV11_MASK | CURL_GSKPROTO_TLSV12_MASK },
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132 | { "exp-rc2-cbc-md5", "06",
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133 | CURL_GSKPROTO_SSLV3_MASK | CURL_GSKPROTO_TLSV10_MASK },
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134 | { "exp-des-cbc-sha", "09",
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135 | CURL_GSKPROTO_SSLV3_MASK | CURL_GSKPROTO_TLSV10_MASK |
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136 | CURL_GSKPROTO_TLSV11_MASK },
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137 | { "des-cbc3-sha", "0A",
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138 | CURL_GSKPROTO_SSLV3_MASK | CURL_GSKPROTO_TLSV10_MASK |
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139 | CURL_GSKPROTO_TLSV11_MASK | CURL_GSKPROTO_TLSV12_MASK },
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140 | { "aes128-sha", "2F",
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141 | CURL_GSKPROTO_TLSV10_MASK | CURL_GSKPROTO_TLSV11_MASK |
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142 | CURL_GSKPROTO_TLSV12_MASK },
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143 | { "aes256-sha", "35",
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144 | CURL_GSKPROTO_TLSV10_MASK | CURL_GSKPROTO_TLSV11_MASK |
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145 | CURL_GSKPROTO_TLSV12_MASK },
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146 | { "null-sha256", "3B", CURL_GSKPROTO_TLSV12_MASK },
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147 | { "aes128-sha256", "3C", CURL_GSKPROTO_TLSV12_MASK },
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148 | { "aes256-sha256", "3D", CURL_GSKPROTO_TLSV12_MASK },
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149 | { "aes128-gcm-sha256",
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150 | "9C", CURL_GSKPROTO_TLSV12_MASK },
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151 | { "aes256-gcm-sha384",
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152 | "9D", CURL_GSKPROTO_TLSV12_MASK },
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153 | { "rc4-md5", "1", CURL_GSKPROTO_SSLV2_MASK },
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154 | { "exp-rc4-md5", "2", CURL_GSKPROTO_SSLV2_MASK },
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155 | { "rc2-md5", "3", CURL_GSKPROTO_SSLV2_MASK },
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156 | { "exp-rc2-md5", "4", CURL_GSKPROTO_SSLV2_MASK },
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157 | { "des-cbc-md5", "6", CURL_GSKPROTO_SSLV2_MASK },
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158 | { "des-cbc3-md5", "7", CURL_GSKPROTO_SSLV2_MASK },
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159 | { (const char *) NULL, (const char *) NULL, 0 }
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160 | };
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161 |
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162 |
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163 | static bool is_separator(char c)
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164 | {
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165 | /* Return whether character is a cipher list separator. */
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166 | switch(c) {
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167 | case ' ':
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168 | case '\t':
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169 | case ':':
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170 | case ',':
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171 | case ';':
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172 | return true;
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173 | }
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174 | return false;
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175 | }
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176 |
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177 |
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178 | static CURLcode gskit_status(struct Curl_easy *data, int rc,
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179 | const char *procname, CURLcode defcode)
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180 | {
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181 | /* Process GSKit status and map it to a CURLcode. */
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182 | switch(rc) {
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183 | case GSK_OK:
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184 | case GSK_OS400_ASYNCHRONOUS_SOC_INIT:
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185 | return CURLE_OK;
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186 | case GSK_KEYRING_OPEN_ERROR:
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187 | case GSK_OS400_ERROR_NO_ACCESS:
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188 | return CURLE_SSL_CACERT_BADFILE;
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189 | case GSK_INSUFFICIENT_STORAGE:
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190 | return CURLE_OUT_OF_MEMORY;
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191 | case GSK_ERROR_BAD_V2_CIPHER:
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192 | case GSK_ERROR_BAD_V3_CIPHER:
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193 | case GSK_ERROR_NO_CIPHERS:
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194 | return CURLE_SSL_CIPHER;
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195 | case GSK_OS400_ERROR_NOT_TRUSTED_ROOT:
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196 | case GSK_ERROR_CERT_VALIDATION:
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197 | return CURLE_PEER_FAILED_VERIFICATION;
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198 | case GSK_OS400_ERROR_TIMED_OUT:
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199 | return CURLE_OPERATION_TIMEDOUT;
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200 | case GSK_WOULD_BLOCK:
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201 | return CURLE_AGAIN;
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202 | case GSK_OS400_ERROR_NOT_REGISTERED:
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203 | break;
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204 | case GSK_ERROR_IO:
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205 | switch(errno) {
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206 | case ENOMEM:
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207 | return CURLE_OUT_OF_MEMORY;
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208 | default:
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209 | failf(data, "%s I/O error: %s", procname, strerror(errno));
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210 | break;
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211 | }
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212 | break;
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213 | default:
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214 | failf(data, "%s: %s", procname, gsk_strerror(rc));
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215 | break;
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216 | }
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217 | return defcode;
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218 | }
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219 |
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220 |
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221 | static CURLcode set_enum(struct Curl_easy *data, gsk_handle h,
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222 | GSK_ENUM_ID id, GSK_ENUM_VALUE value, bool unsupported_ok)
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223 | {
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224 | int rc = gsk_attribute_set_enum(h, id, value);
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225 |
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226 | switch(rc) {
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227 | case GSK_OK:
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228 | return CURLE_OK;
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229 | case GSK_ERROR_IO:
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230 | failf(data, "gsk_attribute_set_enum() I/O error: %s", strerror(errno));
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231 | break;
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232 | case GSK_ATTRIBUTE_INVALID_ID:
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233 | if(unsupported_ok)
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234 | return CURLE_UNSUPPORTED_PROTOCOL;
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235 | default:
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236 | failf(data, "gsk_attribute_set_enum(): %s", gsk_strerror(rc));
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237 | break;
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238 | }
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239 | return CURLE_SSL_CONNECT_ERROR;
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240 | }
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241 |
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242 |
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243 | static CURLcode set_buffer(struct Curl_easy *data, gsk_handle h,
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244 | GSK_BUF_ID id, const char *buffer, bool unsupported_ok)
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245 | {
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246 | int rc = gsk_attribute_set_buffer(h, id, buffer, 0);
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247 |
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248 | switch(rc) {
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249 | case GSK_OK:
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250 | return CURLE_OK;
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251 | case GSK_ERROR_IO:
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252 | failf(data, "gsk_attribute_set_buffer() I/O error: %s", strerror(errno));
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253 | break;
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254 | case GSK_ATTRIBUTE_INVALID_ID:
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255 | if(unsupported_ok)
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256 | return CURLE_UNSUPPORTED_PROTOCOL;
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257 | default:
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258 | failf(data, "gsk_attribute_set_buffer(): %s", gsk_strerror(rc));
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259 | break;
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260 | }
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261 | return CURLE_SSL_CONNECT_ERROR;
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262 | }
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263 |
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264 |
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265 | static CURLcode set_numeric(struct Curl_easy *data,
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266 | gsk_handle h, GSK_NUM_ID id, int value)
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267 | {
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268 | int rc = gsk_attribute_set_numeric_value(h, id, value);
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269 |
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270 | switch(rc) {
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271 | case GSK_OK:
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272 | return CURLE_OK;
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273 | case GSK_ERROR_IO:
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274 | failf(data, "gsk_attribute_set_numeric_value() I/O error: %s",
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275 | strerror(errno));
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276 | break;
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277 | default:
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278 | failf(data, "gsk_attribute_set_numeric_value(): %s", gsk_strerror(rc));
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279 | break;
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280 | }
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281 | return CURLE_SSL_CONNECT_ERROR;
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282 | }
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283 |
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284 |
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285 | static CURLcode set_callback(struct Curl_easy *data,
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286 | gsk_handle h, GSK_CALLBACK_ID id, void *info)
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287 | {
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288 | int rc = gsk_attribute_set_callback(h, id, info);
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289 |
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290 | switch(rc) {
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291 | case GSK_OK:
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292 | return CURLE_OK;
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293 | case GSK_ERROR_IO:
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294 | failf(data, "gsk_attribute_set_callback() I/O error: %s", strerror(errno));
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295 | break;
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296 | default:
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297 | failf(data, "gsk_attribute_set_callback(): %s", gsk_strerror(rc));
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298 | break;
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299 | }
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300 | return CURLE_SSL_CONNECT_ERROR;
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301 | }
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302 |
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303 |
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304 | static CURLcode set_ciphers(struct connectdata *conn,
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305 | gsk_handle h, unsigned int *protoflags)
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306 | {
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307 | struct Curl_easy *data = conn->data;
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308 | const char *cipherlist = SSL_CONN_CONFIG(cipher_list);
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309 | const char *clp;
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310 | const gskit_cipher *ctp;
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311 | int i;
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312 | int l;
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313 | bool unsupported;
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314 | CURLcode result;
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315 | struct {
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316 | char *buf;
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317 | char *ptr;
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318 | } ciphers[CURL_GSKPROTO_LAST];
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319 |
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320 | /* Compile cipher list into GSKit-compatible cipher lists. */
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321 |
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322 | if(!cipherlist)
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323 | return CURLE_OK;
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324 | while(is_separator(*cipherlist)) /* Skip initial separators. */
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325 | cipherlist++;
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326 | if(!*cipherlist)
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327 | return CURLE_OK;
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328 |
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329 | /* We allocate GSKit buffers of the same size as the input string: since
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330 | GSKit tokens are always shorter than their cipher names, allocated buffers
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331 | will always be large enough to accommodate the result. */
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332 | l = strlen(cipherlist) + 1;
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333 | memset((char *) ciphers, 0, sizeof ciphers);
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334 | for(i = 0; i < CURL_GSKPROTO_LAST; i++) {
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335 | ciphers[i].buf = malloc(l);
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336 | if(!ciphers[i].buf) {
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337 | while(i--)
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338 | free(ciphers[i].buf);
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339 | return CURLE_OUT_OF_MEMORY;
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340 | }
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341 | ciphers[i].ptr = ciphers[i].buf;
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342 | *ciphers[i].ptr = '\0';
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343 | }
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344 |
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345 | /* Process each cipher in input string. */
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346 | unsupported = FALSE;
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347 | result = CURLE_OK;
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348 | for(;;) {
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349 | for(clp = cipherlist; *cipherlist && !is_separator(*cipherlist);)
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350 | cipherlist++;
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351 | l = cipherlist - clp;
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352 | if(!l)
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353 | break;
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354 | /* Search the cipher in our table. */
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355 | for(ctp = ciphertable; ctp->name; ctp++)
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356 | if(strncasecompare(ctp->name, clp, l) && !ctp->name[l])
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357 | break;
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358 | if(!ctp->name) {
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359 | failf(data, "Unknown cipher %.*s", l, clp);
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360 | result = CURLE_SSL_CIPHER;
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361 | }
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362 | else {
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363 | unsupported |= !(ctp->versions & (CURL_GSKPROTO_SSLV2_MASK |
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364 | CURL_GSKPROTO_SSLV3_MASK | CURL_GSKPROTO_TLSV10_MASK));
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365 | for(i = 0; i < CURL_GSKPROTO_LAST; i++) {
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366 | if(ctp->versions & (1 << i)) {
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367 | strcpy(ciphers[i].ptr, ctp->gsktoken);
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368 | ciphers[i].ptr += strlen(ctp->gsktoken);
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369 | }
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370 | }
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371 | }
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372 |
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373 | /* Advance to next cipher name or end of string. */
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374 | while(is_separator(*cipherlist))
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375 | cipherlist++;
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376 | }
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377 |
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378 | /* Disable protocols with empty cipher lists. */
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379 | for(i = 0; i < CURL_GSKPROTO_LAST; i++) {
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380 | if(!(*protoflags & (1 << i)) || !ciphers[i].buf[0]) {
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381 | *protoflags &= ~(1 << i);
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382 | ciphers[i].buf[0] = '\0';
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383 | }
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384 | }
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385 |
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386 | /* Try to set-up TLSv1.1 and TLSv2.1 ciphers. */
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387 | if(*protoflags & CURL_GSKPROTO_TLSV11_MASK) {
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388 | result = set_buffer(data, h, GSK_TLSV11_CIPHER_SPECS,
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389 | ciphers[CURL_GSKPROTO_TLSV11].buf, TRUE);
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390 | if(result == CURLE_UNSUPPORTED_PROTOCOL) {
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391 | result = CURLE_OK;
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392 | if(unsupported) {
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393 | failf(data, "TLSv1.1-only ciphers are not yet supported");
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394 | result = CURLE_SSL_CIPHER;
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395 | }
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396 | }
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397 | }
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398 | if(!result && (*protoflags & CURL_GSKPROTO_TLSV12_MASK)) {
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399 | result = set_buffer(data, h, GSK_TLSV12_CIPHER_SPECS,
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400 | ciphers[CURL_GSKPROTO_TLSV12].buf, TRUE);
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401 | if(result == CURLE_UNSUPPORTED_PROTOCOL) {
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402 | result = CURLE_OK;
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403 | if(unsupported) {
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404 | failf(data, "TLSv1.2-only ciphers are not yet supported");
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405 | result = CURLE_SSL_CIPHER;
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406 | }
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407 | }
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408 | }
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409 |
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410 | /* Try to set-up TLSv1.0 ciphers. If not successful, concatenate them to
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411 | the SSLv3 ciphers. OS/400 prior to version 7.1 will understand it. */
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412 | if(!result && (*protoflags & CURL_GSKPROTO_TLSV10_MASK)) {
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413 | result = set_buffer(data, h, GSK_TLSV10_CIPHER_SPECS,
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414 | ciphers[CURL_GSKPROTO_TLSV10].buf, TRUE);
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415 | if(result == CURLE_UNSUPPORTED_PROTOCOL) {
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416 | result = CURLE_OK;
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417 | strcpy(ciphers[CURL_GSKPROTO_SSLV3].ptr,
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418 | ciphers[CURL_GSKPROTO_TLSV10].ptr);
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419 | }
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420 | }
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421 |
|
---|
422 | /* Set-up other ciphers. */
|
---|
423 | if(!result && (*protoflags & CURL_GSKPROTO_SSLV3_MASK))
|
---|
424 | result = set_buffer(data, h, GSK_V3_CIPHER_SPECS,
|
---|
425 | ciphers[CURL_GSKPROTO_SSLV3].buf, FALSE);
|
---|
426 | if(!result && (*protoflags & CURL_GSKPROTO_SSLV2_MASK))
|
---|
427 | result = set_buffer(data, h, GSK_V2_CIPHER_SPECS,
|
---|
428 | ciphers[CURL_GSKPROTO_SSLV2].buf, FALSE);
|
---|
429 |
|
---|
430 | /* Clean-up. */
|
---|
431 | for(i = 0; i < CURL_GSKPROTO_LAST; i++)
|
---|
432 | free(ciphers[i].buf);
|
---|
433 |
|
---|
434 | return result;
|
---|
435 | }
|
---|
436 |
|
---|
437 |
|
---|
438 | static int Curl_gskit_init(void)
|
---|
439 | {
|
---|
440 | /* No initialisation needed. */
|
---|
441 |
|
---|
442 | return 1;
|
---|
443 | }
|
---|
444 |
|
---|
445 |
|
---|
446 | static void Curl_gskit_cleanup(void)
|
---|
447 | {
|
---|
448 | /* Nothing to do. */
|
---|
449 | }
|
---|
450 |
|
---|
451 |
|
---|
452 | static CURLcode init_environment(struct Curl_easy *data,
|
---|
453 | gsk_handle *envir, const char *appid,
|
---|
454 | const char *file, const char *label,
|
---|
455 | const char *password)
|
---|
456 | {
|
---|
457 | int rc;
|
---|
458 | CURLcode result;
|
---|
459 | gsk_handle h;
|
---|
460 |
|
---|
461 | /* Creates the GSKit environment. */
|
---|
462 |
|
---|
463 | rc = gsk_environment_open(&h);
|
---|
464 | switch(rc) {
|
---|
465 | case GSK_OK:
|
---|
466 | break;
|
---|
467 | case GSK_INSUFFICIENT_STORAGE:
|
---|
468 | return CURLE_OUT_OF_MEMORY;
|
---|
469 | default:
|
---|
470 | failf(data, "gsk_environment_open(): %s", gsk_strerror(rc));
|
---|
471 | return CURLE_SSL_CONNECT_ERROR;
|
---|
472 | }
|
---|
473 |
|
---|
474 | result = set_enum(data, h, GSK_SESSION_TYPE, GSK_CLIENT_SESSION, FALSE);
|
---|
475 | if(!result && appid)
|
---|
476 | result = set_buffer(data, h, GSK_OS400_APPLICATION_ID, appid, FALSE);
|
---|
477 | if(!result && file)
|
---|
478 | result = set_buffer(data, h, GSK_KEYRING_FILE, file, FALSE);
|
---|
479 | if(!result && label)
|
---|
480 | result = set_buffer(data, h, GSK_KEYRING_LABEL, label, FALSE);
|
---|
481 | if(!result && password)
|
---|
482 | result = set_buffer(data, h, GSK_KEYRING_PW, password, FALSE);
|
---|
483 |
|
---|
484 | if(!result) {
|
---|
485 | /* Locate CAs, Client certificate and key according to our settings.
|
---|
486 | Note: this call may be blocking for some tenths of seconds. */
|
---|
487 | result = gskit_status(data, gsk_environment_init(h),
|
---|
488 | "gsk_environment_init()", CURLE_SSL_CERTPROBLEM);
|
---|
489 | if(!result) {
|
---|
490 | *envir = h;
|
---|
491 | return result;
|
---|
492 | }
|
---|
493 | }
|
---|
494 | /* Error: rollback. */
|
---|
495 | gsk_environment_close(&h);
|
---|
496 | return result;
|
---|
497 | }
|
---|
498 |
|
---|
499 |
|
---|
500 | static void cancel_async_handshake(struct connectdata *conn, int sockindex)
|
---|
501 | {
|
---|
502 | struct ssl_connect_data *connssl = &conn->ssl[sockindex];
|
---|
503 | Qso_OverlappedIO_t cstat;
|
---|
504 |
|
---|
505 | if(QsoCancelOperation(conn->sock[sockindex], 0) > 0)
|
---|
506 | QsoWaitForIOCompletion(BACKEND->iocport, &cstat, (struct timeval *) NULL);
|
---|
507 | }
|
---|
508 |
|
---|
509 |
|
---|
510 | static void close_async_handshake(struct ssl_connect_data *connssl)
|
---|
511 | {
|
---|
512 | QsoDestroyIOCompletionPort(BACKEND->iocport);
|
---|
513 | BACKEND->iocport = -1;
|
---|
514 | }
|
---|
515 |
|
---|
516 | /* SSL over SSL
|
---|
517 | * Problems:
|
---|
518 | * 1) GSKit can only perform SSL on an AF_INET or AF_INET6 stream socket. To
|
---|
519 | * pipe an SSL stream into another, it is therefore needed to have a pair
|
---|
520 | * of such communicating sockets and handle the pipelining explicitly.
|
---|
521 | * 2) OS/400 socketpair() is only implemented for domain AF_UNIX, thus cannot
|
---|
522 | * be used to produce the pipeline.
|
---|
523 | * The solution is to simulate socketpair() for AF_INET with low-level API
|
---|
524 | * listen(), bind() and connect().
|
---|
525 | */
|
---|
526 |
|
---|
527 | static int
|
---|
528 | inetsocketpair(int sv[2])
|
---|
529 | {
|
---|
530 | int lfd; /* Listening socket. */
|
---|
531 | int sfd; /* Server socket. */
|
---|
532 | int cfd; /* Client socket. */
|
---|
533 | int len;
|
---|
534 | struct sockaddr_in addr1;
|
---|
535 | struct sockaddr_in addr2;
|
---|
536 |
|
---|
537 | /* Create listening socket on a local dynamic port. */
|
---|
538 | lfd = socket(AF_INET, SOCK_STREAM, 0);
|
---|
539 | if(lfd < 0)
|
---|
540 | return -1;
|
---|
541 | memset((char *) &addr1, 0, sizeof addr1);
|
---|
542 | addr1.sin_family = AF_INET;
|
---|
543 | addr1.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
|
---|
544 | addr1.sin_port = 0;
|
---|
545 | if(bind(lfd, (struct sockaddr *) &addr1, sizeof addr1) ||
|
---|
546 | listen(lfd, 2) < 0) {
|
---|
547 | close(lfd);
|
---|
548 | return -1;
|
---|
549 | }
|
---|
550 |
|
---|
551 | /* Get the allocated port. */
|
---|
552 | len = sizeof addr1;
|
---|
553 | if(getsockname(lfd, (struct sockaddr *) &addr1, &len) < 0) {
|
---|
554 | close(lfd);
|
---|
555 | return -1;
|
---|
556 | }
|
---|
557 |
|
---|
558 | /* Create the client socket. */
|
---|
559 | cfd = socket(AF_INET, SOCK_STREAM, 0);
|
---|
560 | if(cfd < 0) {
|
---|
561 | close(lfd);
|
---|
562 | return -1;
|
---|
563 | }
|
---|
564 |
|
---|
565 | /* Request unblocking connection to the listening socket. */
|
---|
566 | curlx_nonblock(cfd, TRUE);
|
---|
567 | if(connect(cfd, (struct sockaddr *) &addr1, sizeof addr1) < 0 &&
|
---|
568 | errno != EINPROGRESS) {
|
---|
569 | close(lfd);
|
---|
570 | close(cfd);
|
---|
571 | return -1;
|
---|
572 | }
|
---|
573 |
|
---|
574 | /* Get the client dynamic port for intrusion check below. */
|
---|
575 | len = sizeof addr2;
|
---|
576 | if(getsockname(cfd, (struct sockaddr *) &addr2, &len) < 0) {
|
---|
577 | close(lfd);
|
---|
578 | close(cfd);
|
---|
579 | return -1;
|
---|
580 | }
|
---|
581 |
|
---|
582 | /* Accept the incoming connection and get the server socket. */
|
---|
583 | curlx_nonblock(lfd, TRUE);
|
---|
584 | for(;;) {
|
---|
585 | len = sizeof addr1;
|
---|
586 | sfd = accept(lfd, (struct sockaddr *) &addr1, &len);
|
---|
587 | if(sfd < 0) {
|
---|
588 | close(lfd);
|
---|
589 | close(cfd);
|
---|
590 | return -1;
|
---|
591 | }
|
---|
592 |
|
---|
593 | /* Check for possible intrusion from an external process. */
|
---|
594 | if(addr1.sin_addr.s_addr == addr2.sin_addr.s_addr &&
|
---|
595 | addr1.sin_port == addr2.sin_port)
|
---|
596 | break;
|
---|
597 |
|
---|
598 | /* Intrusion: reject incoming connection. */
|
---|
599 | close(sfd);
|
---|
600 | }
|
---|
601 |
|
---|
602 | /* Done, return sockets and succeed. */
|
---|
603 | close(lfd);
|
---|
604 | curlx_nonblock(cfd, FALSE);
|
---|
605 | sv[0] = cfd;
|
---|
606 | sv[1] = sfd;
|
---|
607 | return 0;
|
---|
608 | }
|
---|
609 |
|
---|
610 | static int pipe_ssloverssl(struct connectdata *conn, int sockindex,
|
---|
611 | int directions)
|
---|
612 | {
|
---|
613 | struct ssl_connect_data *connssl = &conn->ssl[sockindex];
|
---|
614 | struct ssl_connect_data *connproxyssl = &conn->proxy_ssl[sockindex];
|
---|
615 | fd_set fds_read;
|
---|
616 | fd_set fds_write;
|
---|
617 | int n;
|
---|
618 | int m;
|
---|
619 | int i;
|
---|
620 | int ret = 0;
|
---|
621 | struct timeval tv = {0, 0};
|
---|
622 | char buf[CURL_MAX_WRITE_SIZE];
|
---|
623 |
|
---|
624 | if(!connssl->use || !connproxyssl->use)
|
---|
625 | return 0; /* No SSL over SSL: OK. */
|
---|
626 |
|
---|
627 | FD_ZERO(&fds_read);
|
---|
628 | FD_ZERO(&fds_write);
|
---|
629 | n = -1;
|
---|
630 | if(directions & SOS_READ) {
|
---|
631 | FD_SET(BACKEND->remotefd, &fds_write);
|
---|
632 | n = BACKEND->remotefd;
|
---|
633 | }
|
---|
634 | if(directions & SOS_WRITE) {
|
---|
635 | FD_SET(BACKEND->remotefd, &fds_read);
|
---|
636 | n = BACKEND->remotefd;
|
---|
637 | FD_SET(conn->sock[sockindex], &fds_write);
|
---|
638 | if(n < conn->sock[sockindex])
|
---|
639 | n = conn->sock[sockindex];
|
---|
640 | }
|
---|
641 | i = select(n + 1, &fds_read, &fds_write, NULL, &tv);
|
---|
642 | if(i < 0)
|
---|
643 | return -1; /* Select error. */
|
---|
644 |
|
---|
645 | if(FD_ISSET(BACKEND->remotefd, &fds_write)) {
|
---|
646 | /* Try getting data from HTTPS proxy and pipe it upstream. */
|
---|
647 | n = 0;
|
---|
648 | i = gsk_secure_soc_read(connproxyssl->backend->handle,
|
---|
649 | buf, sizeof buf, &n);
|
---|
650 | switch(i) {
|
---|
651 | case GSK_OK:
|
---|
652 | if(n) {
|
---|
653 | i = write(BACKEND->remotefd, buf, n);
|
---|
654 | if(i < 0)
|
---|
655 | return -1;
|
---|
656 | ret = 1;
|
---|
657 | }
|
---|
658 | break;
|
---|
659 | case GSK_OS400_ERROR_TIMED_OUT:
|
---|
660 | case GSK_WOULD_BLOCK:
|
---|
661 | break;
|
---|
662 | default:
|
---|
663 | return -1;
|
---|
664 | }
|
---|
665 | }
|
---|
666 |
|
---|
667 | if(FD_ISSET(BACKEND->remotefd, &fds_read) &&
|
---|
668 | FD_ISSET(conn->sock[sockindex], &fds_write)) {
|
---|
669 | /* Pipe data to HTTPS proxy. */
|
---|
670 | n = read(BACKEND->remotefd, buf, sizeof buf);
|
---|
671 | if(n < 0)
|
---|
672 | return -1;
|
---|
673 | if(n) {
|
---|
674 | i = gsk_secure_soc_write(connproxyssl->backend->handle, buf, n, &m);
|
---|
675 | if(i != GSK_OK || n != m)
|
---|
676 | return -1;
|
---|
677 | ret = 1;
|
---|
678 | }
|
---|
679 | }
|
---|
680 |
|
---|
681 | return ret; /* OK */
|
---|
682 | }
|
---|
683 |
|
---|
684 |
|
---|
685 | static void close_one(struct ssl_connect_data *connssl,
|
---|
686 | struct connectdata *conn, int sockindex)
|
---|
687 | {
|
---|
688 | if(BACKEND->handle) {
|
---|
689 | gskit_status(conn->data, gsk_secure_soc_close(&BACKEND->handle),
|
---|
690 | "gsk_secure_soc_close()", 0);
|
---|
691 | /* Last chance to drain output. */
|
---|
692 | while(pipe_ssloverssl(conn, sockindex, SOS_WRITE) > 0)
|
---|
693 | ;
|
---|
694 | BACKEND->handle = (gsk_handle) NULL;
|
---|
695 | if(BACKEND->localfd >= 0) {
|
---|
696 | close(BACKEND->localfd);
|
---|
697 | BACKEND->localfd = -1;
|
---|
698 | }
|
---|
699 | if(BACKEND->remotefd >= 0) {
|
---|
700 | close(BACKEND->remotefd);
|
---|
701 | BACKEND->remotefd = -1;
|
---|
702 | }
|
---|
703 | }
|
---|
704 | if(BACKEND->iocport >= 0)
|
---|
705 | close_async_handshake(connssl);
|
---|
706 | }
|
---|
707 |
|
---|
708 |
|
---|
709 | static ssize_t gskit_send(struct connectdata *conn, int sockindex,
|
---|
710 | const void *mem, size_t len, CURLcode *curlcode)
|
---|
711 | {
|
---|
712 | struct ssl_connect_data *connssl = &conn->ssl[sockindex];
|
---|
713 | struct Curl_easy *data = conn->data;
|
---|
714 | CURLcode cc = CURLE_SEND_ERROR;
|
---|
715 | int written;
|
---|
716 |
|
---|
717 | if(pipe_ssloverssl(conn, sockindex, SOS_WRITE) >= 0) {
|
---|
718 | cc = gskit_status(data,
|
---|
719 | gsk_secure_soc_write(BACKEND->handle,
|
---|
720 | (char *) mem, (int) len, &written),
|
---|
721 | "gsk_secure_soc_write()", CURLE_SEND_ERROR);
|
---|
722 | if(cc == CURLE_OK)
|
---|
723 | if(pipe_ssloverssl(conn, sockindex, SOS_WRITE) < 0)
|
---|
724 | cc = CURLE_SEND_ERROR;
|
---|
725 | }
|
---|
726 | if(cc != CURLE_OK) {
|
---|
727 | *curlcode = cc;
|
---|
728 | written = -1;
|
---|
729 | }
|
---|
730 | return (ssize_t) written; /* number of bytes */
|
---|
731 | }
|
---|
732 |
|
---|
733 |
|
---|
734 | static ssize_t gskit_recv(struct connectdata *conn, int num, char *buf,
|
---|
735 | size_t buffersize, CURLcode *curlcode)
|
---|
736 | {
|
---|
737 | struct ssl_connect_data *connssl = &conn->ssl[num];
|
---|
738 | struct Curl_easy *data = conn->data;
|
---|
739 | int buffsize;
|
---|
740 | int nread;
|
---|
741 | CURLcode cc = CURLE_RECV_ERROR;
|
---|
742 |
|
---|
743 | if(pipe_ssloverssl(conn, num, SOS_READ) >= 0) {
|
---|
744 | buffsize = buffersize > (size_t) INT_MAX? INT_MAX: (int) buffersize;
|
---|
745 | cc = gskit_status(data, gsk_secure_soc_read(BACKEND->handle,
|
---|
746 | buf, buffsize, &nread),
|
---|
747 | "gsk_secure_soc_read()", CURLE_RECV_ERROR);
|
---|
748 | }
|
---|
749 | switch(cc) {
|
---|
750 | case CURLE_OK:
|
---|
751 | break;
|
---|
752 | case CURLE_OPERATION_TIMEDOUT:
|
---|
753 | cc = CURLE_AGAIN;
|
---|
754 | default:
|
---|
755 | *curlcode = cc;
|
---|
756 | nread = -1;
|
---|
757 | break;
|
---|
758 | }
|
---|
759 | return (ssize_t) nread;
|
---|
760 | }
|
---|
761 |
|
---|
762 | static CURLcode
|
---|
763 | set_ssl_version_min_max(unsigned int *protoflags, struct connectdata *conn)
|
---|
764 | {
|
---|
765 | struct Curl_easy *data = conn->data;
|
---|
766 | long ssl_version = SSL_CONN_CONFIG(version);
|
---|
767 | long ssl_version_max = SSL_CONN_CONFIG(version_max);
|
---|
768 | long i = ssl_version;
|
---|
769 | switch(ssl_version_max) {
|
---|
770 | case CURL_SSLVERSION_MAX_NONE:
|
---|
771 | ssl_version_max = ssl_version;
|
---|
772 | break;
|
---|
773 | case CURL_SSLVERSION_MAX_DEFAULT:
|
---|
774 | ssl_version_max = CURL_SSLVERSION_TLSv1_2;
|
---|
775 | break;
|
---|
776 | }
|
---|
777 | for(; i <= (ssl_version_max >> 16); ++i) {
|
---|
778 | switch(i) {
|
---|
779 | case CURL_SSLVERSION_TLSv1_0:
|
---|
780 | *protoflags |= CURL_GSKPROTO_TLSV10_MASK;
|
---|
781 | break;
|
---|
782 | case CURL_SSLVERSION_TLSv1_1:
|
---|
783 | *protoflags |= CURL_GSKPROTO_TLSV11_MASK;
|
---|
784 | break;
|
---|
785 | case CURL_SSLVERSION_TLSv1_2:
|
---|
786 | *protoflags |= CURL_GSKPROTO_TLSV11_MASK;
|
---|
787 | break;
|
---|
788 | case CURL_SSLVERSION_TLSv1_3:
|
---|
789 | failf(data, "GSKit: TLS 1.3 is not yet supported");
|
---|
790 | return CURLE_SSL_CONNECT_ERROR;
|
---|
791 | }
|
---|
792 | }
|
---|
793 |
|
---|
794 | return CURLE_OK;
|
---|
795 | }
|
---|
796 |
|
---|
797 | static CURLcode gskit_connect_step1(struct connectdata *conn, int sockindex)
|
---|
798 | {
|
---|
799 | struct Curl_easy *data = conn->data;
|
---|
800 | struct ssl_connect_data *connssl = &conn->ssl[sockindex];
|
---|
801 | gsk_handle envir;
|
---|
802 | CURLcode result;
|
---|
803 | int rc;
|
---|
804 | const char * const keyringfile = SSL_CONN_CONFIG(CAfile);
|
---|
805 | const char * const keyringpwd = SSL_SET_OPTION(key_passwd);
|
---|
806 | const char * const keyringlabel = SSL_SET_OPTION(cert);
|
---|
807 | const long int ssl_version = SSL_CONN_CONFIG(version);
|
---|
808 | const bool verifypeer = SSL_CONN_CONFIG(verifypeer);
|
---|
809 | const char * const hostname = SSL_IS_PROXY()? conn->http_proxy.host.name:
|
---|
810 | conn->host.name;
|
---|
811 | const char *sni;
|
---|
812 | unsigned int protoflags = 0;
|
---|
813 | long timeout;
|
---|
814 | Qso_OverlappedIO_t commarea;
|
---|
815 | int sockpair[2];
|
---|
816 | static const int sobufsize = CURL_MAX_WRITE_SIZE;
|
---|
817 |
|
---|
818 | /* Create SSL environment, start (preferably asynchronous) handshake. */
|
---|
819 |
|
---|
820 | BACKEND->handle = (gsk_handle) NULL;
|
---|
821 | BACKEND->iocport = -1;
|
---|
822 | BACKEND->localfd = -1;
|
---|
823 | BACKEND->remotefd = -1;
|
---|
824 |
|
---|
825 | /* GSKit supports two ways of specifying an SSL context: either by
|
---|
826 | * application identifier (that should have been defined at the system
|
---|
827 | * level) or by keyring file, password and certificate label.
|
---|
828 | * Local certificate name (CURLOPT_SSLCERT) is used to hold either the
|
---|
829 | * application identifier of the certificate label.
|
---|
830 | * Key password (CURLOPT_KEYPASSWD) holds the keyring password.
|
---|
831 | * It is not possible to have different keyrings for the CAs and the
|
---|
832 | * local certificate. We thus use the CA file (CURLOPT_CAINFO) to identify
|
---|
833 | * the keyring file.
|
---|
834 | * If no key password is given and the keyring is the system keyring,
|
---|
835 | * application identifier mode is tried first, as recommended in IBM doc.
|
---|
836 | */
|
---|
837 |
|
---|
838 | envir = (gsk_handle) NULL;
|
---|
839 |
|
---|
840 | if(keyringlabel && *keyringlabel && !keyringpwd &&
|
---|
841 | !strcmp(keyringfile, CURL_CA_BUNDLE)) {
|
---|
842 | /* Try application identifier mode. */
|
---|
843 | init_environment(data, &envir, keyringlabel, (const char *) NULL,
|
---|
844 | (const char *) NULL, (const char *) NULL);
|
---|
845 | }
|
---|
846 |
|
---|
847 | if(!envir) {
|
---|
848 | /* Use keyring mode. */
|
---|
849 | result = init_environment(data, &envir, (const char *) NULL,
|
---|
850 | keyringfile, keyringlabel, keyringpwd);
|
---|
851 | if(result)
|
---|
852 | return result;
|
---|
853 | }
|
---|
854 |
|
---|
855 | /* Create secure session. */
|
---|
856 | result = gskit_status(data, gsk_secure_soc_open(envir, &BACKEND->handle),
|
---|
857 | "gsk_secure_soc_open()", CURLE_SSL_CONNECT_ERROR);
|
---|
858 | gsk_environment_close(&envir);
|
---|
859 | if(result)
|
---|
860 | return result;
|
---|
861 |
|
---|
862 | /* Establish a pipelining socket pair for SSL over SSL. */
|
---|
863 | if(conn->proxy_ssl[sockindex].use) {
|
---|
864 | if(inetsocketpair(sockpair))
|
---|
865 | return CURLE_SSL_CONNECT_ERROR;
|
---|
866 | BACKEND->localfd = sockpair[0];
|
---|
867 | BACKEND->remotefd = sockpair[1];
|
---|
868 | setsockopt(BACKEND->localfd, SOL_SOCKET, SO_RCVBUF,
|
---|
869 | (void *) sobufsize, sizeof sobufsize);
|
---|
870 | setsockopt(BACKEND->remotefd, SOL_SOCKET, SO_RCVBUF,
|
---|
871 | (void *) sobufsize, sizeof sobufsize);
|
---|
872 | setsockopt(BACKEND->localfd, SOL_SOCKET, SO_SNDBUF,
|
---|
873 | (void *) sobufsize, sizeof sobufsize);
|
---|
874 | setsockopt(BACKEND->remotefd, SOL_SOCKET, SO_SNDBUF,
|
---|
875 | (void *) sobufsize, sizeof sobufsize);
|
---|
876 | curlx_nonblock(BACKEND->localfd, TRUE);
|
---|
877 | curlx_nonblock(BACKEND->remotefd, TRUE);
|
---|
878 | }
|
---|
879 |
|
---|
880 | /* Determine which SSL/TLS version should be enabled. */
|
---|
881 | sni = hostname;
|
---|
882 | switch(ssl_version) {
|
---|
883 | case CURL_SSLVERSION_SSLv2:
|
---|
884 | protoflags = CURL_GSKPROTO_SSLV2_MASK;
|
---|
885 | sni = NULL;
|
---|
886 | break;
|
---|
887 | case CURL_SSLVERSION_SSLv3:
|
---|
888 | protoflags = CURL_GSKPROTO_SSLV3_MASK;
|
---|
889 | sni = NULL;
|
---|
890 | break;
|
---|
891 | case CURL_SSLVERSION_DEFAULT:
|
---|
892 | case CURL_SSLVERSION_TLSv1:
|
---|
893 | protoflags = CURL_GSKPROTO_TLSV10_MASK |
|
---|
894 | CURL_GSKPROTO_TLSV11_MASK | CURL_GSKPROTO_TLSV12_MASK;
|
---|
895 | break;
|
---|
896 | case CURL_SSLVERSION_TLSv1_0:
|
---|
897 | case CURL_SSLVERSION_TLSv1_1:
|
---|
898 | case CURL_SSLVERSION_TLSv1_2:
|
---|
899 | case CURL_SSLVERSION_TLSv1_3:
|
---|
900 | result = set_ssl_version_min_max(&protoflags, conn);
|
---|
901 | if(result != CURLE_OK)
|
---|
902 | return result;
|
---|
903 | break;
|
---|
904 | default:
|
---|
905 | failf(data, "Unrecognized parameter passed via CURLOPT_SSLVERSION");
|
---|
906 | return CURLE_SSL_CONNECT_ERROR;
|
---|
907 | }
|
---|
908 |
|
---|
909 | /* Process SNI. Ignore if not supported (on OS400 < V7R1). */
|
---|
910 | if(sni) {
|
---|
911 | result = set_buffer(data, BACKEND->handle,
|
---|
912 | GSK_SSL_EXTN_SERVERNAME_REQUEST, sni, TRUE);
|
---|
913 | if(result == CURLE_UNSUPPORTED_PROTOCOL)
|
---|
914 | result = CURLE_OK;
|
---|
915 | }
|
---|
916 |
|
---|
917 | /* Set session parameters. */
|
---|
918 | if(!result) {
|
---|
919 | /* Compute the handshake timeout. Since GSKit granularity is 1 second,
|
---|
920 | we round up the required value. */
|
---|
921 | timeout = Curl_timeleft(data, NULL, TRUE);
|
---|
922 | if(timeout < 0)
|
---|
923 | result = CURLE_OPERATION_TIMEDOUT;
|
---|
924 | else
|
---|
925 | result = set_numeric(data, BACKEND->handle, GSK_HANDSHAKE_TIMEOUT,
|
---|
926 | (timeout + 999) / 1000);
|
---|
927 | }
|
---|
928 | if(!result)
|
---|
929 | result = set_numeric(data, BACKEND->handle, GSK_OS400_READ_TIMEOUT, 1);
|
---|
930 | if(!result)
|
---|
931 | result = set_numeric(data, BACKEND->handle, GSK_FD, BACKEND->localfd >= 0?
|
---|
932 | BACKEND->localfd: conn->sock[sockindex]);
|
---|
933 | if(!result)
|
---|
934 | result = set_ciphers(conn, BACKEND->handle, &protoflags);
|
---|
935 | if(!protoflags) {
|
---|
936 | failf(data, "No SSL protocol/cipher combination enabled");
|
---|
937 | result = CURLE_SSL_CIPHER;
|
---|
938 | }
|
---|
939 | if(!result)
|
---|
940 | result = set_enum(data, BACKEND->handle, GSK_PROTOCOL_SSLV2,
|
---|
941 | (protoflags & CURL_GSKPROTO_SSLV2_MASK)?
|
---|
942 | GSK_PROTOCOL_SSLV2_ON: GSK_PROTOCOL_SSLV2_OFF, FALSE);
|
---|
943 | if(!result)
|
---|
944 | result = set_enum(data, BACKEND->handle, GSK_PROTOCOL_SSLV3,
|
---|
945 | (protoflags & CURL_GSKPROTO_SSLV3_MASK)?
|
---|
946 | GSK_PROTOCOL_SSLV3_ON: GSK_PROTOCOL_SSLV3_OFF, FALSE);
|
---|
947 | if(!result)
|
---|
948 | result = set_enum(data, BACKEND->handle, GSK_PROTOCOL_TLSV1,
|
---|
949 | (protoflags & CURL_GSKPROTO_TLSV10_MASK)?
|
---|
950 | GSK_PROTOCOL_TLSV1_ON: GSK_PROTOCOL_TLSV1_OFF, FALSE);
|
---|
951 | if(!result) {
|
---|
952 | result = set_enum(data, BACKEND->handle, GSK_PROTOCOL_TLSV11,
|
---|
953 | (protoflags & CURL_GSKPROTO_TLSV11_MASK)?
|
---|
954 | GSK_TRUE: GSK_FALSE, TRUE);
|
---|
955 | if(result == CURLE_UNSUPPORTED_PROTOCOL) {
|
---|
956 | result = CURLE_OK;
|
---|
957 | if(protoflags == CURL_GSKPROTO_TLSV11_MASK) {
|
---|
958 | failf(data, "TLS 1.1 not yet supported");
|
---|
959 | result = CURLE_SSL_CIPHER;
|
---|
960 | }
|
---|
961 | }
|
---|
962 | }
|
---|
963 | if(!result) {
|
---|
964 | result = set_enum(data, BACKEND->handle, GSK_PROTOCOL_TLSV12,
|
---|
965 | (protoflags & CURL_GSKPROTO_TLSV12_MASK)?
|
---|
966 | GSK_TRUE: GSK_FALSE, TRUE);
|
---|
967 | if(result == CURLE_UNSUPPORTED_PROTOCOL) {
|
---|
968 | result = CURLE_OK;
|
---|
969 | if(protoflags == CURL_GSKPROTO_TLSV12_MASK) {
|
---|
970 | failf(data, "TLS 1.2 not yet supported");
|
---|
971 | result = CURLE_SSL_CIPHER;
|
---|
972 | }
|
---|
973 | }
|
---|
974 | }
|
---|
975 | if(!result)
|
---|
976 | result = set_enum(data, BACKEND->handle, GSK_SERVER_AUTH_TYPE,
|
---|
977 | verifypeer? GSK_SERVER_AUTH_FULL:
|
---|
978 | GSK_SERVER_AUTH_PASSTHRU, FALSE);
|
---|
979 |
|
---|
980 | if(!result) {
|
---|
981 | /* Start handshake. Try asynchronous first. */
|
---|
982 | memset(&commarea, 0, sizeof commarea);
|
---|
983 | BACKEND->iocport = QsoCreateIOCompletionPort();
|
---|
984 | if(BACKEND->iocport != -1) {
|
---|
985 | result = gskit_status(data,
|
---|
986 | gsk_secure_soc_startInit(BACKEND->handle,
|
---|
987 | BACKEND->iocport,
|
---|
988 | &commarea),
|
---|
989 | "gsk_secure_soc_startInit()",
|
---|
990 | CURLE_SSL_CONNECT_ERROR);
|
---|
991 | if(!result) {
|
---|
992 | connssl->connecting_state = ssl_connect_2;
|
---|
993 | return CURLE_OK;
|
---|
994 | }
|
---|
995 | else
|
---|
996 | close_async_handshake(connssl);
|
---|
997 | }
|
---|
998 | else if(errno != ENOBUFS)
|
---|
999 | result = gskit_status(data, GSK_ERROR_IO,
|
---|
1000 | "QsoCreateIOCompletionPort()", 0);
|
---|
1001 | else if(conn->proxy_ssl[sockindex].use) {
|
---|
1002 | /* Cannot pipeline while handshaking synchronously. */
|
---|
1003 | result = CURLE_SSL_CONNECT_ERROR;
|
---|
1004 | }
|
---|
1005 | else {
|
---|
1006 | /* No more completion port available. Use synchronous IO. */
|
---|
1007 | result = gskit_status(data, gsk_secure_soc_init(BACKEND->handle),
|
---|
1008 | "gsk_secure_soc_init()", CURLE_SSL_CONNECT_ERROR);
|
---|
1009 | if(!result) {
|
---|
1010 | connssl->connecting_state = ssl_connect_3;
|
---|
1011 | return CURLE_OK;
|
---|
1012 | }
|
---|
1013 | }
|
---|
1014 | }
|
---|
1015 |
|
---|
1016 | /* Error: rollback. */
|
---|
1017 | close_one(connssl, conn, sockindex);
|
---|
1018 | return result;
|
---|
1019 | }
|
---|
1020 |
|
---|
1021 |
|
---|
1022 | static CURLcode gskit_connect_step2(struct connectdata *conn, int sockindex,
|
---|
1023 | bool nonblocking)
|
---|
1024 | {
|
---|
1025 | struct Curl_easy *data = conn->data;
|
---|
1026 | struct ssl_connect_data *connssl = &conn->ssl[sockindex];
|
---|
1027 | Qso_OverlappedIO_t cstat;
|
---|
1028 | long timeout_ms;
|
---|
1029 | struct timeval stmv;
|
---|
1030 | CURLcode result;
|
---|
1031 |
|
---|
1032 | /* Poll or wait for end of SSL asynchronous handshake. */
|
---|
1033 |
|
---|
1034 | for(;;) {
|
---|
1035 | timeout_ms = nonblocking? 0: Curl_timeleft(data, NULL, TRUE);
|
---|
1036 | if(timeout_ms < 0)
|
---|
1037 | timeout_ms = 0;
|
---|
1038 | stmv.tv_sec = timeout_ms / 1000;
|
---|
1039 | stmv.tv_usec = (timeout_ms - stmv.tv_sec * 1000) * 1000;
|
---|
1040 | switch(QsoWaitForIOCompletion(BACKEND->iocport, &cstat, &stmv)) {
|
---|
1041 | case 1: /* Operation complete. */
|
---|
1042 | break;
|
---|
1043 | case -1: /* An error occurred: handshake still in progress. */
|
---|
1044 | if(errno == EINTR) {
|
---|
1045 | if(nonblocking)
|
---|
1046 | return CURLE_OK;
|
---|
1047 | continue; /* Retry. */
|
---|
1048 | }
|
---|
1049 | if(errno != ETIME) {
|
---|
1050 | failf(data, "QsoWaitForIOCompletion() I/O error: %s", strerror(errno));
|
---|
1051 | cancel_async_handshake(conn, sockindex);
|
---|
1052 | close_async_handshake(connssl);
|
---|
1053 | return CURLE_SSL_CONNECT_ERROR;
|
---|
1054 | }
|
---|
1055 | /* FALL INTO... */
|
---|
1056 | case 0: /* Handshake in progress, timeout occurred. */
|
---|
1057 | if(nonblocking)
|
---|
1058 | return CURLE_OK;
|
---|
1059 | cancel_async_handshake(conn, sockindex);
|
---|
1060 | close_async_handshake(connssl);
|
---|
1061 | return CURLE_OPERATION_TIMEDOUT;
|
---|
1062 | }
|
---|
1063 | break;
|
---|
1064 | }
|
---|
1065 | result = gskit_status(data, cstat.returnValue, "SSL handshake",
|
---|
1066 | CURLE_SSL_CONNECT_ERROR);
|
---|
1067 | if(!result)
|
---|
1068 | connssl->connecting_state = ssl_connect_3;
|
---|
1069 | close_async_handshake(connssl);
|
---|
1070 | return result;
|
---|
1071 | }
|
---|
1072 |
|
---|
1073 |
|
---|
1074 | static CURLcode gskit_connect_step3(struct connectdata *conn, int sockindex)
|
---|
1075 | {
|
---|
1076 | struct Curl_easy *data = conn->data;
|
---|
1077 | struct ssl_connect_data *connssl = &conn->ssl[sockindex];
|
---|
1078 | const gsk_cert_data_elem *cdev;
|
---|
1079 | int cdec;
|
---|
1080 | const gsk_cert_data_elem *p;
|
---|
1081 | const char *cert = (const char *) NULL;
|
---|
1082 | const char *certend;
|
---|
1083 | const char *ptr;
|
---|
1084 | int i;
|
---|
1085 | CURLcode result;
|
---|
1086 |
|
---|
1087 | /* SSL handshake done: gather certificate info and verify host. */
|
---|
1088 |
|
---|
1089 | if(gskit_status(data, gsk_attribute_get_cert_info(BACKEND->handle,
|
---|
1090 | GSK_PARTNER_CERT_INFO,
|
---|
1091 | &cdev, &cdec),
|
---|
1092 | "gsk_attribute_get_cert_info()", CURLE_SSL_CONNECT_ERROR) ==
|
---|
1093 | CURLE_OK) {
|
---|
1094 | infof(data, "Server certificate:\n");
|
---|
1095 | p = cdev;
|
---|
1096 | for(i = 0; i++ < cdec; p++)
|
---|
1097 | switch(p->cert_data_id) {
|
---|
1098 | case CERT_BODY_DER:
|
---|
1099 | cert = p->cert_data_p;
|
---|
1100 | certend = cert + cdev->cert_data_l;
|
---|
1101 | break;
|
---|
1102 | case CERT_DN_PRINTABLE:
|
---|
1103 | infof(data, "\t subject: %.*s\n", p->cert_data_l, p->cert_data_p);
|
---|
1104 | break;
|
---|
1105 | case CERT_ISSUER_DN_PRINTABLE:
|
---|
1106 | infof(data, "\t issuer: %.*s\n", p->cert_data_l, p->cert_data_p);
|
---|
1107 | break;
|
---|
1108 | case CERT_VALID_FROM:
|
---|
1109 | infof(data, "\t start date: %.*s\n", p->cert_data_l, p->cert_data_p);
|
---|
1110 | break;
|
---|
1111 | case CERT_VALID_TO:
|
---|
1112 | infof(data, "\t expire date: %.*s\n", p->cert_data_l, p->cert_data_p);
|
---|
1113 | break;
|
---|
1114 | }
|
---|
1115 | }
|
---|
1116 |
|
---|
1117 | /* Verify host. */
|
---|
1118 | result = Curl_verifyhost(conn, cert, certend);
|
---|
1119 | if(result)
|
---|
1120 | return result;
|
---|
1121 |
|
---|
1122 | /* The only place GSKit can get the whole CA chain is a validation
|
---|
1123 | callback where no user data pointer is available. Therefore it's not
|
---|
1124 | possible to copy this chain into our structures for CAINFO.
|
---|
1125 | However the server certificate may be available, thus we can return
|
---|
1126 | info about it. */
|
---|
1127 | if(data->set.ssl.certinfo) {
|
---|
1128 | result = Curl_ssl_init_certinfo(data, 1);
|
---|
1129 | if(result)
|
---|
1130 | return result;
|
---|
1131 |
|
---|
1132 | if(cert) {
|
---|
1133 | result = Curl_extract_certinfo(conn, 0, cert, certend);
|
---|
1134 | if(result)
|
---|
1135 | return result;
|
---|
1136 | }
|
---|
1137 | }
|
---|
1138 |
|
---|
1139 | /* Check pinned public key. */
|
---|
1140 | ptr = SSL_IS_PROXY() ? data->set.str[STRING_SSL_PINNEDPUBLICKEY_PROXY] :
|
---|
1141 | data->set.str[STRING_SSL_PINNEDPUBLICKEY_ORIG];
|
---|
1142 | if(!result && ptr) {
|
---|
1143 | curl_X509certificate x509;
|
---|
1144 | curl_asn1Element *p;
|
---|
1145 |
|
---|
1146 | if(Curl_parseX509(&x509, cert, certend))
|
---|
1147 | return CURLE_SSL_PINNEDPUBKEYNOTMATCH;
|
---|
1148 | p = &x509.subjectPublicKeyInfo;
|
---|
1149 | result = Curl_pin_peer_pubkey(data, ptr, p->header, p->end - p->header);
|
---|
1150 | if(result) {
|
---|
1151 | failf(data, "SSL: public key does not match pinned public key!");
|
---|
1152 | return result;
|
---|
1153 | }
|
---|
1154 | }
|
---|
1155 |
|
---|
1156 | connssl->connecting_state = ssl_connect_done;
|
---|
1157 | return CURLE_OK;
|
---|
1158 | }
|
---|
1159 |
|
---|
1160 |
|
---|
1161 | static CURLcode gskit_connect_common(struct connectdata *conn, int sockindex,
|
---|
1162 | bool nonblocking, bool *done)
|
---|
1163 | {
|
---|
1164 | struct Curl_easy *data = conn->data;
|
---|
1165 | struct ssl_connect_data *connssl = &conn->ssl[sockindex];
|
---|
1166 | long timeout_ms;
|
---|
1167 | Qso_OverlappedIO_t cstat;
|
---|
1168 | CURLcode result = CURLE_OK;
|
---|
1169 |
|
---|
1170 | *done = connssl->state == ssl_connection_complete;
|
---|
1171 | if(*done)
|
---|
1172 | return CURLE_OK;
|
---|
1173 |
|
---|
1174 | /* Step 1: create session, start handshake. */
|
---|
1175 | if(connssl->connecting_state == ssl_connect_1) {
|
---|
1176 | /* check allowed time left */
|
---|
1177 | timeout_ms = Curl_timeleft(data, NULL, TRUE);
|
---|
1178 |
|
---|
1179 | if(timeout_ms < 0) {
|
---|
1180 | /* no need to continue if time already is up */
|
---|
1181 | failf(data, "SSL connection timeout");
|
---|
1182 | result = CURLE_OPERATION_TIMEDOUT;
|
---|
1183 | }
|
---|
1184 | else
|
---|
1185 | result = gskit_connect_step1(conn, sockindex);
|
---|
1186 | }
|
---|
1187 |
|
---|
1188 | /* Handle handshake pipelining. */
|
---|
1189 | if(!result)
|
---|
1190 | if(pipe_ssloverssl(conn, sockindex, SOS_READ | SOS_WRITE) < 0)
|
---|
1191 | result = CURLE_SSL_CONNECT_ERROR;
|
---|
1192 |
|
---|
1193 | /* Step 2: check if handshake is over. */
|
---|
1194 | if(!result && connssl->connecting_state == ssl_connect_2) {
|
---|
1195 | /* check allowed time left */
|
---|
1196 | timeout_ms = Curl_timeleft(data, NULL, TRUE);
|
---|
1197 |
|
---|
1198 | if(timeout_ms < 0) {
|
---|
1199 | /* no need to continue if time already is up */
|
---|
1200 | failf(data, "SSL connection timeout");
|
---|
1201 | result = CURLE_OPERATION_TIMEDOUT;
|
---|
1202 | }
|
---|
1203 | else
|
---|
1204 | result = gskit_connect_step2(conn, sockindex, nonblocking);
|
---|
1205 | }
|
---|
1206 |
|
---|
1207 | /* Handle handshake pipelining. */
|
---|
1208 | if(!result)
|
---|
1209 | if(pipe_ssloverssl(conn, sockindex, SOS_READ | SOS_WRITE) < 0)
|
---|
1210 | result = CURLE_SSL_CONNECT_ERROR;
|
---|
1211 |
|
---|
1212 | /* Step 3: gather certificate info, verify host. */
|
---|
1213 | if(!result && connssl->connecting_state == ssl_connect_3)
|
---|
1214 | result = gskit_connect_step3(conn, sockindex);
|
---|
1215 |
|
---|
1216 | if(result)
|
---|
1217 | close_one(connssl, conn, sockindex);
|
---|
1218 | else if(connssl->connecting_state == ssl_connect_done) {
|
---|
1219 | connssl->state = ssl_connection_complete;
|
---|
1220 | connssl->connecting_state = ssl_connect_1;
|
---|
1221 | conn->recv[sockindex] = gskit_recv;
|
---|
1222 | conn->send[sockindex] = gskit_send;
|
---|
1223 | *done = TRUE;
|
---|
1224 | }
|
---|
1225 |
|
---|
1226 | return result;
|
---|
1227 | }
|
---|
1228 |
|
---|
1229 |
|
---|
1230 | static CURLcode Curl_gskit_connect_nonblocking(struct connectdata *conn,
|
---|
1231 | int sockindex, bool *done)
|
---|
1232 | {
|
---|
1233 | CURLcode result;
|
---|
1234 |
|
---|
1235 | result = gskit_connect_common(conn, sockindex, TRUE, done);
|
---|
1236 | if(*done || result)
|
---|
1237 | conn->ssl[sockindex].connecting_state = ssl_connect_1;
|
---|
1238 | return result;
|
---|
1239 | }
|
---|
1240 |
|
---|
1241 |
|
---|
1242 | static CURLcode Curl_gskit_connect(struct connectdata *conn, int sockindex)
|
---|
1243 | {
|
---|
1244 | CURLcode result;
|
---|
1245 | bool done;
|
---|
1246 |
|
---|
1247 | conn->ssl[sockindex].connecting_state = ssl_connect_1;
|
---|
1248 | result = gskit_connect_common(conn, sockindex, FALSE, &done);
|
---|
1249 | if(result)
|
---|
1250 | return result;
|
---|
1251 |
|
---|
1252 | DEBUGASSERT(done);
|
---|
1253 |
|
---|
1254 | return CURLE_OK;
|
---|
1255 | }
|
---|
1256 |
|
---|
1257 |
|
---|
1258 | static void Curl_gskit_close(struct connectdata *conn, int sockindex)
|
---|
1259 | {
|
---|
1260 | close_one(&conn->ssl[sockindex], conn, sockindex);
|
---|
1261 | close_one(&conn->proxy_ssl[sockindex], conn, sockindex);
|
---|
1262 | }
|
---|
1263 |
|
---|
1264 |
|
---|
1265 | static int Curl_gskit_shutdown(struct connectdata *conn, int sockindex)
|
---|
1266 | {
|
---|
1267 | struct ssl_connect_data *connssl = &conn->ssl[sockindex];
|
---|
1268 | struct Curl_easy *data = conn->data;
|
---|
1269 | ssize_t nread;
|
---|
1270 | int what;
|
---|
1271 | int rc;
|
---|
1272 | char buf[120];
|
---|
1273 |
|
---|
1274 | if(!BACKEND->handle)
|
---|
1275 | return 0;
|
---|
1276 |
|
---|
1277 | if(data->set.ftp_ccc != CURLFTPSSL_CCC_ACTIVE)
|
---|
1278 | return 0;
|
---|
1279 |
|
---|
1280 | close_one(connssl, conn, sockindex);
|
---|
1281 | rc = 0;
|
---|
1282 | what = SOCKET_READABLE(conn->sock[sockindex],
|
---|
1283 | SSL_SHUTDOWN_TIMEOUT);
|
---|
1284 |
|
---|
1285 | for(;;) {
|
---|
1286 | if(what < 0) {
|
---|
1287 | /* anything that gets here is fatally bad */
|
---|
1288 | failf(data, "select/poll on SSL socket, errno: %d", SOCKERRNO);
|
---|
1289 | rc = -1;
|
---|
1290 | break;
|
---|
1291 | }
|
---|
1292 |
|
---|
1293 | if(!what) { /* timeout */
|
---|
1294 | failf(data, "SSL shutdown timeout");
|
---|
1295 | break;
|
---|
1296 | }
|
---|
1297 |
|
---|
1298 | /* Something to read, let's do it and hope that it is the close
|
---|
1299 | notify alert from the server. No way to gsk_secure_soc_read() now, so
|
---|
1300 | use read(). */
|
---|
1301 |
|
---|
1302 | nread = read(conn->sock[sockindex], buf, sizeof(buf));
|
---|
1303 |
|
---|
1304 | if(nread < 0) {
|
---|
1305 | failf(data, "read: %s", strerror(errno));
|
---|
1306 | rc = -1;
|
---|
1307 | }
|
---|
1308 |
|
---|
1309 | if(nread <= 0)
|
---|
1310 | break;
|
---|
1311 |
|
---|
1312 | what = SOCKET_READABLE(conn->sock[sockindex], 0);
|
---|
1313 | }
|
---|
1314 |
|
---|
1315 | return rc;
|
---|
1316 | }
|
---|
1317 |
|
---|
1318 |
|
---|
1319 | static size_t Curl_gskit_version(char *buffer, size_t size)
|
---|
1320 | {
|
---|
1321 | strncpy(buffer, "GSKit", size);
|
---|
1322 | return strlen(buffer);
|
---|
1323 | }
|
---|
1324 |
|
---|
1325 |
|
---|
1326 | static int Curl_gskit_check_cxn(struct connectdata *cxn)
|
---|
1327 | {
|
---|
1328 | struct ssl_connect_data *connssl = &cxn->ssl[FIRSTSOCKET];
|
---|
1329 | int err;
|
---|
1330 | int errlen;
|
---|
1331 |
|
---|
1332 | /* The only thing that can be tested here is at the socket level. */
|
---|
1333 |
|
---|
1334 | if(!BACKEND->handle)
|
---|
1335 | return 0; /* connection has been closed */
|
---|
1336 |
|
---|
1337 | err = 0;
|
---|
1338 | errlen = sizeof err;
|
---|
1339 |
|
---|
1340 | if(getsockopt(cxn->sock[FIRSTSOCKET], SOL_SOCKET, SO_ERROR,
|
---|
1341 | (unsigned char *) &err, &errlen) ||
|
---|
1342 | errlen != sizeof err || err)
|
---|
1343 | return 0; /* connection has been closed */
|
---|
1344 |
|
---|
1345 | return -1; /* connection status unknown */
|
---|
1346 | }
|
---|
1347 |
|
---|
1348 | static void *Curl_gskit_get_internals(struct ssl_connect_data *connssl,
|
---|
1349 | CURLINFO info UNUSED_PARAM)
|
---|
1350 | {
|
---|
1351 | (void)info;
|
---|
1352 | return BACKEND->handle;
|
---|
1353 | }
|
---|
1354 |
|
---|
1355 | const struct Curl_ssl Curl_ssl_gskit = {
|
---|
1356 | { CURLSSLBACKEND_GSKIT, "gskit" }, /* info */
|
---|
1357 |
|
---|
1358 | 0, /* have_ca_path */
|
---|
1359 | 1, /* have_certinfo */
|
---|
1360 | 0, /* have_pinnedpubkey */
|
---|
1361 | 0, /* have_ssl_ctx */
|
---|
1362 | /* TODO: convert to 1 and fix test #1014 (if need) */
|
---|
1363 | 0, /* support_https_proxy */
|
---|
1364 |
|
---|
1365 | sizeof(struct ssl_backend_data),
|
---|
1366 |
|
---|
1367 | Curl_gskit_init, /* init */
|
---|
1368 | Curl_gskit_cleanup, /* cleanup */
|
---|
1369 | Curl_gskit_version, /* version */
|
---|
1370 | Curl_gskit_check_cxn, /* check_cxn */
|
---|
1371 | Curl_gskit_shutdown, /* shutdown */
|
---|
1372 | Curl_none_data_pending, /* data_pending */
|
---|
1373 | Curl_none_random, /* random */
|
---|
1374 | Curl_none_cert_status_request, /* cert_status_request */
|
---|
1375 | Curl_gskit_connect, /* connect */
|
---|
1376 | Curl_gskit_connect_nonblocking, /* connect_nonblocking */
|
---|
1377 | Curl_gskit_get_internals, /* get_internals */
|
---|
1378 | Curl_gskit_close, /* close_one */
|
---|
1379 | Curl_none_close_all, /* close_all */
|
---|
1380 | /* No session handling for GSKit */
|
---|
1381 | Curl_none_session_free, /* session_free */
|
---|
1382 | Curl_none_set_engine, /* set_engine */
|
---|
1383 | Curl_none_set_engine_default, /* set_engine_default */
|
---|
1384 | Curl_none_engines_list, /* engines_list */
|
---|
1385 | Curl_none_false_start, /* false_start */
|
---|
1386 | Curl_none_md5sum, /* md5sum */
|
---|
1387 | NULL /* sha256sum */
|
---|
1388 | };
|
---|
1389 |
|
---|
1390 | #endif /* USE_GSKIT */
|
---|