Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/curl/docs/examples/smtp-tls.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 - 2016, 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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23 /* <DESC>
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24 * SMTP example using TLS
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25 * </DESC>
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26 */
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28 #include <stdio.h>
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29 #include <string.h>
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30 #include <curl/curl.h>
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32 /* This is a simple example showing how to send mail using libcurl's SMTP
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33 * capabilities. It builds on the smtp-mail.c example to add authentication
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34 * and, more importantly, transport security to protect the authentication
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35 * details from being snooped.
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36 *
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37 * Note that this example requires libcurl 7.20.0 or above.
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38 */
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40 #define FROM "<sender@example.org>"
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41 #define TO "<addressee@example.net>"
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42 #define CC "<info@example.org>"
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43
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44 static const char *payload_text[] = {
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45 "Date: Mon, 29 Nov 2010 21:54:29 +1100\r\n",
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46 "To: " TO "\r\n",
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47 "From: " FROM " (Example User)\r\n",
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48 "Cc: " CC " (Another example User)\r\n",
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49 "Message-ID: <dcd7cb36-11db-487a-9f3a-e652a9458efd@"
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50 "rfcpedant.example.org>\r\n",
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51 "Subject: SMTP TLS example message\r\n",
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52 "\r\n", /* empty line to divide headers from body, see RFC5322 */
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53 "The body of the message starts here.\r\n",
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54 "\r\n",
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55 "It could be a lot of lines, could be MIME encoded, whatever.\r\n",
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56 "Check RFC5322.\r\n",
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57 NULL
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58 };
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59
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60 struct upload_status {
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61 int lines_read;
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62 };
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63
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64 static size_t payload_source(void *ptr, size_t size, size_t nmemb, void *userp)
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65 {
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66 struct upload_status *upload_ctx = (struct upload_status *)userp;
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67 const char *data;
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68
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69 if((size == 0) || (nmemb == 0) || ((size*nmemb) < 1)) {
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70 return 0;
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71 }
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72
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73 data = payload_text[upload_ctx->lines_read];
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74
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75 if(data) {
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76 size_t len = strlen(data);
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77 memcpy(ptr, data, len);
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78 upload_ctx->lines_read++;
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79
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80 return len;
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81 }
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82
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83 return 0;
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84 }
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85
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86 int main(void)
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87 {
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88 CURL *curl;
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89 CURLcode res = CURLE_OK;
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90 struct curl_slist *recipients = NULL;
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91 struct upload_status upload_ctx;
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92
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93 upload_ctx.lines_read = 0;
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94
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95 curl = curl_easy_init();
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96 if(curl) {
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97 /* Set username and password */
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98 curl_easy_setopt(curl, CURLOPT_USERNAME, "user");
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99 curl_easy_setopt(curl, CURLOPT_PASSWORD, "secret");
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100
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101 /* This is the URL for your mailserver. Note the use of port 587 here,
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102 * instead of the normal SMTP port (25). Port 587 is commonly used for
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103 * secure mail submission (see RFC4403), but you should use whatever
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104 * matches your server configuration. */
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105 curl_easy_setopt(curl, CURLOPT_URL, "smtp://mainserver.example.net:587");
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106
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107 /* In this example, we'll start with a plain text connection, and upgrade
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108 * to Transport Layer Security (TLS) using the STARTTLS command. Be careful
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109 * of using CURLUSESSL_TRY here, because if TLS upgrade fails, the transfer
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110 * will continue anyway - see the security discussion in the libcurl
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111 * tutorial for more details. */
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112 curl_easy_setopt(curl, CURLOPT_USE_SSL, (long)CURLUSESSL_ALL);
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113
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114 /* If your server doesn't have a valid certificate, then you can disable
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115 * part of the Transport Layer Security protection by setting the
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116 * CURLOPT_SSL_VERIFYPEER and CURLOPT_SSL_VERIFYHOST options to 0 (false).
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117 * curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0L);
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118 * curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0L);
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119 * That is, in general, a bad idea. It is still better than sending your
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120 * authentication details in plain text though. Instead, you should get
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121 * the issuer certificate (or the host certificate if the certificate is
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122 * self-signed) and add it to the set of certificates that are known to
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Franz Glasner <fzglas.hg@dom66.de>
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123 * libcurl using CURLOPT_CAINFO and/or CURLOPT_CAPATH. See docs/SSLCERTS
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124 * for more information. */
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125 curl_easy_setopt(curl, CURLOPT_CAINFO, "/path/to/certificate.pem");
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126
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127 /* Note that this option isn't strictly required, omitting it will result
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128 * in libcurl sending the MAIL FROM command with empty sender data. All
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129 * autoresponses should have an empty reverse-path, and should be directed
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130 * to the address in the reverse-path which triggered them. Otherwise,
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131 * they could cause an endless loop. See RFC 5321 Section 4.5.5 for more
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132 * details.
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133 */
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134 curl_easy_setopt(curl, CURLOPT_MAIL_FROM, FROM);
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135
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136 /* Add two recipients, in this particular case they correspond to the
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parents:
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137 * To: and Cc: addressees in the header, but they could be any kind of
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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138 * recipient. */
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139 recipients = curl_slist_append(recipients, TO);
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140 recipients = curl_slist_append(recipients, CC);
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141 curl_easy_setopt(curl, CURLOPT_MAIL_RCPT, recipients);
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142
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143 /* We're using a callback function to specify the payload (the headers and
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parents:
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144 * body of the message). You could just use the CURLOPT_READDATA option to
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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145 * specify a FILE pointer to read from. */
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parents:
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146 curl_easy_setopt(curl, CURLOPT_READFUNCTION, payload_source);
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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147 curl_easy_setopt(curl, CURLOPT_READDATA, &upload_ctx);
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parents:
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148 curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
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149
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150 /* Since the traffic will be encrypted, it is very useful to turn on debug
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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151 * information within libcurl to see what is happening during the transfer.
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152 */
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153 curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
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154
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parents:
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155 /* Send the message */
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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156 res = curl_easy_perform(curl);
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parents:
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157
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parents:
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158 /* Check for errors */
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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159 if(res != CURLE_OK)
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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160 fprintf(stderr, "curl_easy_perform() failed: %s\n",
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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161 curl_easy_strerror(res));
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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parents:
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162
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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163 /* Free the list of recipients */
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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164 curl_slist_free_all(recipients);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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parents:
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165
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parents:
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166 /* Always cleanup */
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
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167 curl_easy_cleanup(curl);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
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168 }
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parents:
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169
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170 return (int)res;
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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171 }