annotate mupdf-source/thirdparty/curl/src/tool_metalink.h @ 46:7ee69f120f19 default tip

>>>>> tag v1.26.5+1 for changeset b74429b0f5c4
author Franz Glasner <fzglas.hg@dom66.de>
date Sat, 11 Oct 2025 17:17:30 +0200
parents b50eed0cc0ef
children
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1 #ifndef HEADER_CURL_TOOL_METALINK_H
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2 #define HEADER_CURL_TOOL_METALINK_H
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3 /***************************************************************************
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4 * _ _ ____ _
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5 * Project ___| | | | _ \| |
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6 * / __| | | | |_) | |
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7 * | (__| |_| | _ <| |___
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8 * \___|\___/|_| \_\_____|
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9 *
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10 * Copyright (C) 1998 - 2014, 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
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11 *
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12 * This software is licensed as described in the file COPYING, which
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13 * you should have received as part of this distribution. The terms
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14 * are also available at https://curl.haxx.se/docs/copyright.html.
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15 *
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16 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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17 * copies of the Software, and permit persons to whom the Software is
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18 * furnished to do so, under the terms of the COPYING file.
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19 *
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20 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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21 * KIND, either express or implied.
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22 *
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23 ***************************************************************************/
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24 #include "tool_setup.h"
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25 #include "tool_sdecls.h"
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27 struct GlobalConfig;
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28 struct OperationConfig;
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30 /* returns 1 for success, 0 otherwise (we use OpenSSL *_Init fncs directly) */
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31 typedef int (* Curl_digest_init_func)(void *context);
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33 typedef void (* Curl_digest_update_func)(void *context,
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34 const unsigned char *data,
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35 unsigned int len);
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36 typedef void (* Curl_digest_final_func)(unsigned char *result, void *context);
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38 typedef struct {
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39 Curl_digest_init_func digest_init; /* Initialize context procedure */
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40 Curl_digest_update_func digest_update; /* Update context with data */
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41 Curl_digest_final_func digest_final; /* Get final result procedure */
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42 unsigned int digest_ctxtsize; /* Context structure size */
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43 unsigned int digest_resultlen; /* Result length (bytes) */
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44 } digest_params;
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46 typedef struct {
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47 const digest_params *digest_hash; /* Hash function definition */
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48 void *digest_hashctx; /* Hash function context */
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49 } digest_context;
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51 digest_context * Curl_digest_init(const digest_params *dparams);
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52 int Curl_digest_update(digest_context *context,
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53 const unsigned char *data,
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54 unsigned int len);
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55 int Curl_digest_final(digest_context *context, unsigned char *result);
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57 typedef struct {
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58 const char *hash_name;
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59 const digest_params *dparams;
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60 } metalink_digest_def;
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62 typedef struct {
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63 const char *alias_name;
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64 const metalink_digest_def *digest_def;
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65 } metalink_digest_alias;
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66
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67 typedef struct metalink_checksum {
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68 const metalink_digest_def *digest_def;
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69 /* raw digest value, not ascii hex digest */
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70 unsigned char *digest;
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71 } metalink_checksum;
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73 typedef struct metalink_resource {
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74 struct metalink_resource *next;
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75 char *url;
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76 } metalink_resource;
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78 typedef struct metalinkfile {
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79 struct metalinkfile *next;
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80 char *filename;
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81 metalink_checksum *checksum;
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82 metalink_resource *resource;
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83 } metalinkfile;
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85 #ifdef USE_METALINK
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87 /*
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88 * curl requires libmetalink 0.1.0 or newer
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89 */
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90 #define CURL_REQ_LIBMETALINK_MAJOR 0
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91 #define CURL_REQ_LIBMETALINK_MINOR 1
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92 #define CURL_REQ_LIBMETALINK_PATCH 0
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94 #define CURL_REQ_LIBMETALINK_VERS ((CURL_REQ_LIBMETALINK_MAJOR * 10000) + \
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95 (CURL_REQ_LIBMETALINK_MINOR * 100) + \
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96 CURL_REQ_LIBMETALINK_PATCH)
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98 extern const digest_params MD5_DIGEST_PARAMS[1];
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99 extern const digest_params SHA1_DIGEST_PARAMS[1];
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100 extern const digest_params SHA256_DIGEST_PARAMS[1];
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101
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102 #include <metalink/metalink.h>
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103
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104 /*
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105 * Counts the resource in the metalinkfile.
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106 */
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107 int count_next_metalink_resource(metalinkfile *mlfile);
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108 void clean_metalink(struct OperationConfig *config);
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109
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110 /*
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111 * Performs final parse operation and extracts information from
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112 * Metalink and creates metalinkfile structs.
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113 *
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114 * This function returns 0 if it succeeds without warnings, or one of
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115 * the following negative error codes:
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116 *
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117 * -1: Parsing failed; or no file is found
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118 * -2: Parsing succeeded with some warnings.
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119 */
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120 int parse_metalink(struct OperationConfig *config, struct OutStruct *outs,
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121 const char *metalink_url);
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122
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123 /*
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124 * Callback function for CURLOPT_WRITEFUNCTION
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125 */
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126 size_t metalink_write_cb(void *buffer, size_t sz, size_t nmemb,
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127 void *userdata);
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128
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129 /*
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130 * Returns nonzero if content_type includes "application/metalink+xml"
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131 * media-type. The check is done in case-insensitive manner.
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132 */
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133 int check_metalink_content_type(const char *content_type);
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134
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135 /*
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136 * Check checksum of file denoted by filename.
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137 *
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138 * This function returns 1 if the checksum matches or one of the
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139 * following integers:
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140 *
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141 * 0:
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142 * Checksum didn't match.
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143 * -1:
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144 * Could not open file; or could not read data from file.
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145 * -2:
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146 * No checksum in Metalink supported, hash algorithm not available, or
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147 * Metalink does not contain checksum.
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148 */
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149 int metalink_check_hash(struct GlobalConfig *config,
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150 metalinkfile *mlfile,
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151 const char *filename);
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152
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153 /*
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154 * Release resources allocated at global scope.
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155 */
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156 void metalink_cleanup(void);
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157
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158 #else /* USE_METALINK */
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159
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160 #define count_next_metalink_resource(x) 0
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161 #define clean_metalink(x) (void)x
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162
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163 /* metalink_cleanup() takes no arguments */
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164 #define metalink_cleanup() Curl_nop_stmt
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165
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166 #endif /* USE_METALINK */
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167
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168 #endif /* HEADER_CURL_TOOL_METALINK_H */