1 | /* crypto/err/err.h */ |
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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 | * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved. |
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60 | * |
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61 | * Redistribution and use in source and binary forms, with or without |
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62 | * modification, are permitted provided that the following conditions |
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63 | * are met: |
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64 | * |
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65 | * 1. Redistributions of source code must retain the above copyright |
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66 | * notice, this list of conditions and the following disclaimer. |
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67 | * |
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68 | * 2. Redistributions in binary form must reproduce the above copyright |
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69 | * notice, this list of conditions and the following disclaimer in |
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70 | * the documentation and/or other materials provided with the |
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71 | * distribution. |
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72 | * |
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73 | * 3. All advertising materials mentioning features or use of this |
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74 | * software must display the following acknowledgment: |
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75 | * "This product includes software developed by the OpenSSL Project |
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76 | * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" |
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77 | * |
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78 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
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79 | * endorse or promote products derived from this software without |
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80 | * prior written permission. For written permission, please contact |
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81 | * openssl-core@openssl.org. |
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82 | * |
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83 | * 5. Products derived from this software may not be called "OpenSSL" |
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84 | * nor may "OpenSSL" appear in their names without prior written |
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85 | * permission of the OpenSSL Project. |
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86 | * |
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87 | * 6. Redistributions of any form whatsoever must retain the following |
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88 | * acknowledgment: |
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89 | * "This product includes software developed by the OpenSSL Project |
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90 | * for use in the OpenSSL Toolkit (http://www.openssl.org/)" |
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91 | * |
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92 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
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93 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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94 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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95 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR |
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96 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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97 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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98 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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99 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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100 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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101 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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102 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
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103 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
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104 | * ==================================================================== |
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105 | * |
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106 | * This product includes cryptographic software written by Eric Young |
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107 | * (eay@cryptsoft.com). This product includes software written by Tim |
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108 | * Hudson (tjh@cryptsoft.com). |
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109 | * |
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110 | */ |
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111 | |
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112 | #ifndef HEADER_ERR_H |
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113 | #define HEADER_ERR_H |
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114 | |
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115 | #include <openssl/e_os2.h> |
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116 | |
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117 | #ifndef OPENSSL_NO_FP_API |
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118 | #include <stdio.h> |
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119 | #include <stdlib.h> |
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120 | #endif |
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121 | |
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122 | #include <openssl/ossl_typ.h> |
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123 | #ifndef OPENSSL_NO_BIO |
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124 | #include <openssl/bio.h> |
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125 | #endif |
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126 | #ifndef OPENSSL_NO_LHASH |
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127 | #include <openssl/lhash.h> |
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128 | #endif |
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129 | |
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130 | #ifdef __cplusplus |
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131 | extern "C" { |
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132 | #endif |
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133 | |
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134 | #ifndef OPENSSL_NO_ERR |
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135 | #define ERR_PUT_error(a,b,c,d,e) ERR_put_error(a,b,c,d,e) |
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136 | #else |
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137 | #define ERR_PUT_error(a,b,c,d,e) ERR_put_error(a,b,c,NULL,0) |
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138 | #endif |
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139 | |
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140 | #include <errno.h> |
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141 | |
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142 | #define ERR_TXT_MALLOCED 0x01 |
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143 | #define ERR_TXT_STRING 0x02 |
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144 | |
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145 | #define ERR_FLAG_MARK 0x01 |
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146 | |
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147 | #define ERR_NUM_ERRORS 16 |
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148 | typedef struct err_state_st |
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149 | { |
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150 | CRYPTO_THREADID tid; |
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151 | int err_flags[ERR_NUM_ERRORS]; |
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152 | unsigned long err_buffer[ERR_NUM_ERRORS]; |
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153 | char *err_data[ERR_NUM_ERRORS]; |
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154 | int err_data_flags[ERR_NUM_ERRORS]; |
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155 | const char *err_file[ERR_NUM_ERRORS]; |
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156 | int err_line[ERR_NUM_ERRORS]; |
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157 | int top,bottom; |
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158 | } ERR_STATE; |
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159 | |
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160 | /* library */ |
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161 | #define ERR_LIB_NONE 1 |
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162 | #define ERR_LIB_SYS 2 |
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163 | #define ERR_LIB_BN 3 |
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164 | #define ERR_LIB_RSA 4 |
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165 | #define ERR_LIB_DH 5 |
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166 | #define ERR_LIB_EVP 6 |
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167 | #define ERR_LIB_BUF 7 |
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168 | #define ERR_LIB_OBJ 8 |
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169 | #define ERR_LIB_PEM 9 |
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170 | #define ERR_LIB_DSA 10 |
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171 | #define ERR_LIB_X509 11 |
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172 | /* #define ERR_LIB_METH 12 */ |
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173 | #define ERR_LIB_ASN1 13 |
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174 | #define ERR_LIB_CONF 14 |
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175 | #define ERR_LIB_CRYPTO 15 |
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176 | #define ERR_LIB_EC 16 |
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177 | #define ERR_LIB_SSL 20 |
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178 | /* #define ERR_LIB_SSL23 21 */ |
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179 | /* #define ERR_LIB_SSL2 22 */ |
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180 | /* #define ERR_LIB_SSL3 23 */ |
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181 | /* #define ERR_LIB_RSAREF 30 */ |
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182 | /* #define ERR_LIB_PROXY 31 */ |
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183 | #define ERR_LIB_BIO 32 |
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184 | #define ERR_LIB_PKCS7 33 |
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185 | #define ERR_LIB_X509V3 34 |
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186 | #define ERR_LIB_PKCS12 35 |
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187 | #define ERR_LIB_RAND 36 |
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188 | #define ERR_LIB_DSO 37 |
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189 | #define ERR_LIB_ENGINE 38 |
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190 | #define ERR_LIB_OCSP 39 |
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191 | #define ERR_LIB_UI 40 |
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192 | #define ERR_LIB_COMP 41 |
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193 | #define ERR_LIB_ECDSA 42 |
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194 | #define ERR_LIB_ECDH 43 |
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195 | #define ERR_LIB_STORE 44 |
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196 | #define ERR_LIB_FIPS 45 |
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197 | #define ERR_LIB_CMS 46 |
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198 | #define ERR_LIB_TS 47 |
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199 | #define ERR_LIB_HMAC 48 |
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200 | #define ERR_LIB_JPAKE 49 |
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201 | |
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202 | #define ERR_LIB_USER 128 |
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203 | |
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204 | #define SYSerr(f,r) ERR_PUT_error(ERR_LIB_SYS,(f),(r),__FILE__,__LINE__) |
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205 | #define BNerr(f,r) ERR_PUT_error(ERR_LIB_BN,(f),(r),__FILE__,__LINE__) |
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206 | #define RSAerr(f,r) ERR_PUT_error(ERR_LIB_RSA,(f),(r),__FILE__,__LINE__) |
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207 | #define DHerr(f,r) ERR_PUT_error(ERR_LIB_DH,(f),(r),__FILE__,__LINE__) |
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208 | #define EVPerr(f,r) ERR_PUT_error(ERR_LIB_EVP,(f),(r),__FILE__,__LINE__) |
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209 | #define BUFerr(f,r) ERR_PUT_error(ERR_LIB_BUF,(f),(r),__FILE__,__LINE__) |
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210 | #define OBJerr(f,r) ERR_PUT_error(ERR_LIB_OBJ,(f),(r),__FILE__,__LINE__) |
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211 | #define PEMerr(f,r) ERR_PUT_error(ERR_LIB_PEM,(f),(r),__FILE__,__LINE__) |
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212 | #define DSAerr(f,r) ERR_PUT_error(ERR_LIB_DSA,(f),(r),__FILE__,__LINE__) |
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213 | #define X509err(f,r) ERR_PUT_error(ERR_LIB_X509,(f),(r),__FILE__,__LINE__) |
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214 | #define ASN1err(f,r) ERR_PUT_error(ERR_LIB_ASN1,(f),(r),__FILE__,__LINE__) |
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215 | #define CONFerr(f,r) ERR_PUT_error(ERR_LIB_CONF,(f),(r),__FILE__,__LINE__) |
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216 | #define CRYPTOerr(f,r) ERR_PUT_error(ERR_LIB_CRYPTO,(f),(r),__FILE__,__LINE__) |
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217 | #define ECerr(f,r) ERR_PUT_error(ERR_LIB_EC,(f),(r),__FILE__,__LINE__) |
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218 | #define SSLerr(f,r) ERR_PUT_error(ERR_LIB_SSL,(f),(r),__FILE__,__LINE__) |
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219 | #define BIOerr(f,r) ERR_PUT_error(ERR_LIB_BIO,(f),(r),__FILE__,__LINE__) |
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220 | #define PKCS7err(f,r) ERR_PUT_error(ERR_LIB_PKCS7,(f),(r),__FILE__,__LINE__) |
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221 | #define X509V3err(f,r) ERR_PUT_error(ERR_LIB_X509V3,(f),(r),__FILE__,__LINE__) |
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222 | #define PKCS12err(f,r) ERR_PUT_error(ERR_LIB_PKCS12,(f),(r),__FILE__,__LINE__) |
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223 | #define RANDerr(f,r) ERR_PUT_error(ERR_LIB_RAND,(f),(r),__FILE__,__LINE__) |
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224 | #define DSOerr(f,r) ERR_PUT_error(ERR_LIB_DSO,(f),(r),__FILE__,__LINE__) |
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225 | #define ENGINEerr(f,r) ERR_PUT_error(ERR_LIB_ENGINE,(f),(r),__FILE__,__LINE__) |
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226 | #define OCSPerr(f,r) ERR_PUT_error(ERR_LIB_OCSP,(f),(r),__FILE__,__LINE__) |
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227 | #define UIerr(f,r) ERR_PUT_error(ERR_LIB_UI,(f),(r),__FILE__,__LINE__) |
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228 | #define COMPerr(f,r) ERR_PUT_error(ERR_LIB_COMP,(f),(r),__FILE__,__LINE__) |
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229 | #define ECDSAerr(f,r) ERR_PUT_error(ERR_LIB_ECDSA,(f),(r),__FILE__,__LINE__) |
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230 | #define ECDHerr(f,r) ERR_PUT_error(ERR_LIB_ECDH,(f),(r),__FILE__,__LINE__) |
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231 | #define STOREerr(f,r) ERR_PUT_error(ERR_LIB_STORE,(f),(r),__FILE__,__LINE__) |
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232 | #define FIPSerr(f,r) ERR_PUT_error(ERR_LIB_FIPS,(f),(r),__FILE__,__LINE__) |
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233 | #define CMSerr(f,r) ERR_PUT_error(ERR_LIB_CMS,(f),(r),__FILE__,__LINE__) |
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234 | #define TSerr(f,r) ERR_PUT_error(ERR_LIB_TS,(f),(r),__FILE__,__LINE__) |
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235 | #define HMACerr(f,r) ERR_PUT_error(ERR_LIB_HMAC,(f),(r),__FILE__,__LINE__) |
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236 | #define JPAKEerr(f,r) ERR_PUT_error(ERR_LIB_JPAKE,(f),(r),__FILE__,__LINE__) |
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237 | |
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238 | /* Borland C seems too stupid to be able to shift and do longs in |
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239 | * the pre-processor :-( */ |
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240 | #define ERR_PACK(l,f,r) (((((unsigned long)l)&0xffL)*0x1000000)| \ |
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241 | ((((unsigned long)f)&0xfffL)*0x1000)| \ |
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242 | ((((unsigned long)r)&0xfffL))) |
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243 | #define ERR_GET_LIB(l) (int)((((unsigned long)l)>>24L)&0xffL) |
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244 | #define ERR_GET_FUNC(l) (int)((((unsigned long)l)>>12L)&0xfffL) |
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245 | #define ERR_GET_REASON(l) (int)((l)&0xfffL) |
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246 | #define ERR_FATAL_ERROR(l) (int)((l)&ERR_R_FATAL) |
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247 | |
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248 | |
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249 | /* OS functions */ |
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250 | #define SYS_F_FOPEN 1 |
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251 | #define SYS_F_CONNECT 2 |
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252 | #define SYS_F_GETSERVBYNAME 3 |
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253 | #define SYS_F_SOCKET 4 |
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254 | #define SYS_F_IOCTLSOCKET 5 |
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255 | #define SYS_F_BIND 6 |
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256 | #define SYS_F_LISTEN 7 |
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257 | #define SYS_F_ACCEPT 8 |
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258 | #define SYS_F_WSASTARTUP 9 /* Winsock stuff */ |
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259 | #define SYS_F_OPENDIR 10 |
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260 | #define SYS_F_FREAD 11 |
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261 | |
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262 | |
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263 | /* reasons */ |
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264 | #define ERR_R_SYS_LIB ERR_LIB_SYS /* 2 */ |
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265 | #define ERR_R_BN_LIB ERR_LIB_BN /* 3 */ |
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266 | #define ERR_R_RSA_LIB ERR_LIB_RSA /* 4 */ |
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267 | #define ERR_R_DH_LIB ERR_LIB_DH /* 5 */ |
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268 | #define ERR_R_EVP_LIB ERR_LIB_EVP /* 6 */ |
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269 | #define ERR_R_BUF_LIB ERR_LIB_BUF /* 7 */ |
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270 | #define ERR_R_OBJ_LIB ERR_LIB_OBJ /* 8 */ |
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271 | #define ERR_R_PEM_LIB ERR_LIB_PEM /* 9 */ |
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272 | #define ERR_R_DSA_LIB ERR_LIB_DSA /* 10 */ |
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273 | #define ERR_R_X509_LIB ERR_LIB_X509 /* 11 */ |
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274 | #define ERR_R_ASN1_LIB ERR_LIB_ASN1 /* 13 */ |
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275 | #define ERR_R_CONF_LIB ERR_LIB_CONF /* 14 */ |
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276 | #define ERR_R_CRYPTO_LIB ERR_LIB_CRYPTO /* 15 */ |
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277 | #define ERR_R_EC_LIB ERR_LIB_EC /* 16 */ |
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278 | #define ERR_R_SSL_LIB ERR_LIB_SSL /* 20 */ |
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279 | #define ERR_R_BIO_LIB ERR_LIB_BIO /* 32 */ |
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280 | #define ERR_R_PKCS7_LIB ERR_LIB_PKCS7 /* 33 */ |
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281 | #define ERR_R_X509V3_LIB ERR_LIB_X509V3 /* 34 */ |
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282 | #define ERR_R_PKCS12_LIB ERR_LIB_PKCS12 /* 35 */ |
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283 | #define ERR_R_RAND_LIB ERR_LIB_RAND /* 36 */ |
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284 | #define ERR_R_DSO_LIB ERR_LIB_DSO /* 37 */ |
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285 | #define ERR_R_ENGINE_LIB ERR_LIB_ENGINE /* 38 */ |
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286 | #define ERR_R_OCSP_LIB ERR_LIB_OCSP /* 39 */ |
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287 | #define ERR_R_UI_LIB ERR_LIB_UI /* 40 */ |
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288 | #define ERR_R_COMP_LIB ERR_LIB_COMP /* 41 */ |
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289 | #define ERR_R_ECDSA_LIB ERR_LIB_ECDSA /* 42 */ |
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290 | #define ERR_R_ECDH_LIB ERR_LIB_ECDH /* 43 */ |
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291 | #define ERR_R_STORE_LIB ERR_LIB_STORE /* 44 */ |
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292 | #define ERR_R_TS_LIB ERR_LIB_TS /* 45 */ |
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293 | |
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294 | #define ERR_R_NESTED_ASN1_ERROR 58 |
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295 | #define ERR_R_BAD_ASN1_OBJECT_HEADER 59 |
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296 | #define ERR_R_BAD_GET_ASN1_OBJECT_CALL 60 |
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297 | #define ERR_R_EXPECTING_AN_ASN1_SEQUENCE 61 |
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298 | #define ERR_R_ASN1_LENGTH_MISMATCH 62 |
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299 | #define ERR_R_MISSING_ASN1_EOS 63 |
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300 | |
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301 | /* fatal error */ |
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302 | #define ERR_R_FATAL 64 |
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303 | #define ERR_R_MALLOC_FAILURE (1|ERR_R_FATAL) |
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304 | #define ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED (2|ERR_R_FATAL) |
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305 | #define ERR_R_PASSED_NULL_PARAMETER (3|ERR_R_FATAL) |
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306 | #define ERR_R_INTERNAL_ERROR (4|ERR_R_FATAL) |
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307 | #define ERR_R_DISABLED (5|ERR_R_FATAL) |
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308 | |
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309 | /* 99 is the maximum possible ERR_R_... code, higher values |
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310 | * are reserved for the individual libraries */ |
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311 | |
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312 | |
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313 | typedef struct ERR_string_data_st |
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314 | { |
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315 | unsigned long error; |
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316 | const char *string; |
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317 | } ERR_STRING_DATA; |
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318 | |
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319 | void ERR_put_error(int lib, int func,int reason,const char *file,int line); |
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320 | void ERR_set_error_data(char *data,int flags); |
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321 | |
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322 | unsigned long ERR_get_error(void); |
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323 | unsigned long ERR_get_error_line(const char **file,int *line); |
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324 | unsigned long ERR_get_error_line_data(const char **file,int *line, |
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325 | const char **data, int *flags); |
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326 | unsigned long ERR_peek_error(void); |
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327 | unsigned long ERR_peek_error_line(const char **file,int *line); |
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328 | unsigned long ERR_peek_error_line_data(const char **file,int *line, |
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329 | const char **data,int *flags); |
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330 | unsigned long ERR_peek_last_error(void); |
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331 | unsigned long ERR_peek_last_error_line(const char **file,int *line); |
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332 | unsigned long ERR_peek_last_error_line_data(const char **file,int *line, |
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333 | const char **data,int *flags); |
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334 | void ERR_clear_error(void ); |
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335 | char *ERR_error_string(unsigned long e,char *buf); |
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336 | void ERR_error_string_n(unsigned long e, char *buf, size_t len); |
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337 | const char *ERR_lib_error_string(unsigned long e); |
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338 | const char *ERR_func_error_string(unsigned long e); |
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339 | const char *ERR_reason_error_string(unsigned long e); |
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340 | void ERR_print_errors_cb(int (*cb)(const char *str, size_t len, void *u), |
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341 | void *u); |
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342 | #ifndef OPENSSL_NO_FP_API |
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343 | void ERR_print_errors_fp(FILE *fp); |
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344 | #endif |
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345 | #ifndef OPENSSL_NO_BIO |
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346 | void ERR_print_errors(BIO *bp); |
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347 | void ERR_add_error_data(int num, ...); |
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348 | #endif |
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349 | void ERR_load_strings(int lib,ERR_STRING_DATA str[]); |
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350 | void ERR_unload_strings(int lib,ERR_STRING_DATA str[]); |
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351 | void ERR_load_ERR_strings(void); |
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352 | void ERR_load_crypto_strings(void); |
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353 | void ERR_free_strings(void); |
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354 | |
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355 | void ERR_remove_thread_state(const CRYPTO_THREADID *tid); |
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356 | #ifndef OPENSSL_NO_DEPRECATED |
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357 | void ERR_remove_state(unsigned long pid); /* if zero we look it up */ |
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358 | #endif |
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359 | ERR_STATE *ERR_get_state(void); |
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360 | |
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361 | #ifndef OPENSSL_NO_LHASH |
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362 | LHASH_OF(ERR_STRING_DATA) *ERR_get_string_table(void); |
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363 | LHASH_OF(ERR_STATE) *ERR_get_err_state_table(void); |
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364 | void ERR_release_err_state_table(LHASH_OF(ERR_STATE) **hash); |
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365 | #endif |
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366 | |
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367 | int ERR_get_next_error_library(void); |
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368 | |
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369 | int ERR_set_mark(void); |
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370 | int ERR_pop_to_mark(void); |
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371 | |
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372 | /* Already defined in ossl_typ.h */ |
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373 | /* typedef struct st_ERR_FNS ERR_FNS; */ |
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374 | /* An application can use this function and provide the return value to loaded |
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375 | * modules that should use the application's ERR state/functionality */ |
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376 | const ERR_FNS *ERR_get_implementation(void); |
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377 | /* A loaded module should call this function prior to any ERR operations using |
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378 | * the application's "ERR_FNS". */ |
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379 | int ERR_set_implementation(const ERR_FNS *fns); |
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380 | |
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381 | #ifdef __cplusplus |
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382 | } |
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383 | #endif |
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384 | |
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385 | #endif |
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