Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/curl/docs/examples/ftpuploadresume.c @ 40:aa33339d6b8a upstream

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ADD: MuPDF v1.26.10: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.5.
author Franz Glasner <fzglas.hg@dom66.de>
date Sat, 11 Oct 2025 11:31:38 +0200
parents b50eed0cc0ef
children
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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 /* <DESC>
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23 * Upload to FTP, resuming failed transfers.
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24 * </DESC>
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25 */
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27 #include <stdlib.h>
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28 #include <stdio.h>
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29 #include <curl/curl.h>
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31 /* parse headers for Content-Length */
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32 static size_t getcontentlengthfunc(void *ptr, size_t size, size_t nmemb,
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33 void *stream)
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34 {
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35 int r;
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36 long len = 0;
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37
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38 r = sscanf(ptr, "Content-Length: %ld\n", &len);
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39 if(r)
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40 *((long *) stream) = len;
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41
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42 return size * nmemb;
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43 }
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44
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45 /* discard downloaded data */
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46 static size_t discardfunc(void *ptr, size_t size, size_t nmemb, void *stream)
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47 {
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48 (void)ptr;
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49 (void)stream;
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50 return size * nmemb;
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51 }
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53 /* read data to upload */
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54 static size_t readfunc(void *ptr, size_t size, size_t nmemb, void *stream)
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55 {
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56 FILE *f = stream;
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57 size_t n;
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58
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59 if(ferror(f))
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60 return CURL_READFUNC_ABORT;
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61
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62 n = fread(ptr, size, nmemb, f) * size;
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64 return n;
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65 }
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68 static int upload(CURL *curlhandle, const char *remotepath,
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69 const char *localpath, long timeout, long tries)
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70 {
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71 FILE *f;
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72 long uploaded_len = 0;
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73 CURLcode r = CURLE_GOT_NOTHING;
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74 int c;
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75
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76 f = fopen(localpath, "rb");
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77 if(!f) {
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78 perror(NULL);
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79 return 0;
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80 }
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81
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82 curl_easy_setopt(curlhandle, CURLOPT_UPLOAD, 1L);
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84 curl_easy_setopt(curlhandle, CURLOPT_URL, remotepath);
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86 if(timeout)
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87 curl_easy_setopt(curlhandle, CURLOPT_FTP_RESPONSE_TIMEOUT, timeout);
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89 curl_easy_setopt(curlhandle, CURLOPT_HEADERFUNCTION, getcontentlengthfunc);
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90 curl_easy_setopt(curlhandle, CURLOPT_HEADERDATA, &uploaded_len);
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92 curl_easy_setopt(curlhandle, CURLOPT_WRITEFUNCTION, discardfunc);
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94 curl_easy_setopt(curlhandle, CURLOPT_READFUNCTION, readfunc);
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95 curl_easy_setopt(curlhandle, CURLOPT_READDATA, f);
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97 /* disable passive mode */
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98 curl_easy_setopt(curlhandle, CURLOPT_FTPPORT, "-");
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99 curl_easy_setopt(curlhandle, CURLOPT_FTP_CREATE_MISSING_DIRS, 1L);
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100
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101 curl_easy_setopt(curlhandle, CURLOPT_VERBOSE, 1L);
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102
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103 for(c = 0; (r != CURLE_OK) && (c < tries); c++) {
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104 /* are we resuming? */
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105 if(c) { /* yes */
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106 /* determine the length of the file already written */
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107
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108 /*
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109 * With NOBODY and NOHEADER, libcurl will issue a SIZE
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110 * command, but the only way to retrieve the result is
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111 * to parse the returned Content-Length header. Thus,
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112 * getcontentlengthfunc(). We need discardfunc() above
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113 * because HEADER will dump the headers to stdout
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114 * without it.
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115 */
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116 curl_easy_setopt(curlhandle, CURLOPT_NOBODY, 1L);
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117 curl_easy_setopt(curlhandle, CURLOPT_HEADER, 1L);
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118
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119 r = curl_easy_perform(curlhandle);
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120 if(r != CURLE_OK)
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121 continue;
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122
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123 curl_easy_setopt(curlhandle, CURLOPT_NOBODY, 0L);
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124 curl_easy_setopt(curlhandle, CURLOPT_HEADER, 0L);
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125
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126 fseek(f, uploaded_len, SEEK_SET);
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127
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128 curl_easy_setopt(curlhandle, CURLOPT_APPEND, 1L);
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129 }
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130 else { /* no */
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131 curl_easy_setopt(curlhandle, CURLOPT_APPEND, 0L);
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132 }
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133
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134 r = curl_easy_perform(curlhandle);
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135 }
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136
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137 fclose(f);
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138
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139 if(r == CURLE_OK)
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140 return 1;
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141 else {
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142 fprintf(stderr, "%s\n", curl_easy_strerror(r));
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143 return 0;
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144 }
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145 }
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parents:
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146
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parents:
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147 int main(void)
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148 {
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149 CURL *curlhandle = NULL;
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150
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parents:
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151 curl_global_init(CURL_GLOBAL_ALL);
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parents:
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152 curlhandle = curl_easy_init();
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parents:
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153
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parents:
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154 upload(curlhandle, "ftp://user:pass@example.com/path/file", "C:\\file",
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parents:
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155 0, 3);
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parents:
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156
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parents:
diff changeset
157 curl_easy_cleanup(curlhandle);
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parents:
diff changeset
158 curl_global_cleanup();
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parents:
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159
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parents:
diff changeset
160 return 0;
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parents:
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161 }