Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/curl/docs/examples/sftpuploadresume.c @ 46:7ee69f120f19 default tip

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
>>>>> 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
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
2
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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 - 2019, 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 SFTP, resuming a previously aborted transfer.
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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 /* read data to upload */
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32 static size_t readfunc(void *ptr, size_t size, size_t nmemb, void *stream)
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33 {
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34 FILE *f = (FILE *)stream;
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35 size_t n;
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37 if(ferror(f))
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38 return CURL_READFUNC_ABORT;
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40 n = fread(ptr, size, nmemb, f) * size;
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42 return n;
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43 }
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44
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45 /*
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46 * sftpGetRemoteFileSize returns the remote file size in byte; -1 on error
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47 */
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48 static curl_off_t sftpGetRemoteFileSize(const char *i_remoteFile)
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49 {
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50 CURLcode result = CURLE_GOT_NOTHING;
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51 curl_off_t remoteFileSizeByte = -1;
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52 CURL *curlHandlePtr = curl_easy_init();
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53
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54 curl_easy_setopt(curlHandlePtr, CURLOPT_VERBOSE, 1L);
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56 curl_easy_setopt(curlHandlePtr, CURLOPT_URL, i_remoteFile);
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57 curl_easy_setopt(curlHandlePtr, CURLOPT_NOPROGRESS, 1);
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58 curl_easy_setopt(curlHandlePtr, CURLOPT_NOBODY, 1);
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59 curl_easy_setopt(curlHandlePtr, CURLOPT_HEADER, 1);
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60 curl_easy_setopt(curlHandlePtr, CURLOPT_FILETIME, 1);
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61
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62 result = curl_easy_perform(curlHandlePtr);
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63 if(CURLE_OK == result) {
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64 result = curl_easy_getinfo(curlHandlePtr,
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65 CURLINFO_CONTENT_LENGTH_DOWNLOAD_T,
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66 &remoteFileSizeByte);
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67 if(result)
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68 return -1;
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69 printf("filesize: %" CURL_FORMAT_CURL_OFF_T "\n", remoteFileSizeByte);
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70 }
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71 curl_easy_cleanup(curlHandlePtr);
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72
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73 return remoteFileSizeByte;
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74 }
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75
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76
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77 static int sftpResumeUpload(CURL *curlhandle, const char *remotepath,
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78 const char *localpath)
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79 {
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80 FILE *f = NULL;
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81 CURLcode result = CURLE_GOT_NOTHING;
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82
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83 curl_off_t remoteFileSizeByte = sftpGetRemoteFileSize(remotepath);
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84 if(-1 == remoteFileSizeByte) {
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85 printf("Error reading the remote file size: unable to resume upload\n");
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86 return -1;
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87 }
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88
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89 f = fopen(localpath, "rb");
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90 if(!f) {
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91 perror(NULL);
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92 return 0;
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93 }
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94
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95 curl_easy_setopt(curlhandle, CURLOPT_UPLOAD, 1L);
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96 curl_easy_setopt(curlhandle, CURLOPT_URL, remotepath);
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97 curl_easy_setopt(curlhandle, CURLOPT_READFUNCTION, readfunc);
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98 curl_easy_setopt(curlhandle, CURLOPT_READDATA, f);
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99
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100 #ifdef _WIN32
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101 _fseeki64(f, remoteFileSizeByte, SEEK_SET);
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102 #else
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103 fseek(f, (long)remoteFileSizeByte, SEEK_SET);
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104 #endif
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105 curl_easy_setopt(curlhandle, CURLOPT_APPEND, 1L);
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106 result = curl_easy_perform(curlhandle);
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107
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108 fclose(f);
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109
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110 if(result == CURLE_OK)
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111 return 1;
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112 else {
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113 fprintf(stderr, "%s\n", curl_easy_strerror(result));
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114 return 0;
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115 }
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116 }
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117
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118 int main(void)
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119 {
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120 const char *remote = "sftp://user:pass@example.com/path/filename";
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121 const char *filename = "filename";
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122 CURL *curlhandle = NULL;
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123
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124 curl_global_init(CURL_GLOBAL_ALL);
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125 curlhandle = curl_easy_init();
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126
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127 if(!sftpResumeUpload(curlhandle, remote, filename)) {
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128 printf("resumed upload using curl %s failed\n", curl_version());
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129 }
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130
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131 curl_easy_cleanup(curlhandle);
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132 curl_global_cleanup();
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133
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134 return 0;
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135 }