Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/curl/docs/examples/smtp-ssl.c @ 33:c4daa0c83d64

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Apply also -fstack-clash-protection and -fstack-protector-strong for all generated binaries. Only done if EXTRA_CHECKS is not empty and not 0.
author Franz Glasner <fzglas.hg@dom66.de>
date Sun, 21 Sep 2025 17:55:13 +0200
parents b50eed0cc0ef
children
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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 SSL
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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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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 SSL 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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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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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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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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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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parents:
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100
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parents:
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101 /* This is the URL for your mailserver. Note the use of smtps:// rather
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
102 * than smtp:// to request a SSL based connection. */
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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103 curl_easy_setopt(curl, CURLOPT_URL, "smtps://mainserver.example.net");
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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104
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parents:
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105 /* If you want to connect to a site who isn't using a certificate that is
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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106 * signed by one of the certs in the CA bundle you have, you can skip the
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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107 * verification of the server's certificate. This makes the connection
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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108 * A LOT LESS SECURE.
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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109 *
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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110 * If you have a CA cert for the server stored someplace else than in the
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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111 * default bundle, then the CURLOPT_CAPATH option might come handy for
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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112 * you. */
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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113 #ifdef SKIP_PEER_VERIFICATION
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114 curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0L);
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Franz Glasner <fzglas.hg@dom66.de>
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115 #endif
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116
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parents:
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117 /* If the site you're connecting to uses a different host name that what
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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118 * they have mentioned in their server certificate's commonName (or
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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119 * subjectAltName) fields, libcurl will refuse to connect. You can skip
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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120 * this check, but this will make the connection less secure. */
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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121 #ifdef SKIP_HOSTNAME_VERIFICATION
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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122 curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0L);
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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123 #endif
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parents:
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124
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parents:
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125 /* Note that this option isn't strictly required, omitting it will result
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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126 * in libcurl sending the MAIL FROM command with empty sender data. All
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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127 * autoresponses should have an empty reverse-path, and should be directed
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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128 * to the address in the reverse-path which triggered them. Otherwise,
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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129 * they could cause an endless loop. See RFC 5321 Section 4.5.5 for more
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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130 * details.
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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131 */
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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132 curl_easy_setopt(curl, CURLOPT_MAIL_FROM, FROM);
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parents:
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133
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parents:
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134 /* Add two recipients, in this particular case they correspond to the
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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135 * To: and Cc: addressees in the header, but they could be any kind of
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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136 * recipient. */
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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137 recipients = curl_slist_append(recipients, TO);
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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138 recipients = curl_slist_append(recipients, CC);
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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139 curl_easy_setopt(curl, CURLOPT_MAIL_RCPT, recipients);
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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140
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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141 /* We're using a callback function to specify the payload (the headers and
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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142 * body of the message). You could just use the CURLOPT_READDATA option to
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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143 * specify a FILE pointer to read from. */
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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144 curl_easy_setopt(curl, CURLOPT_READFUNCTION, payload_source);
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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145 curl_easy_setopt(curl, CURLOPT_READDATA, &upload_ctx);
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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146 curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
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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147
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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148 /* Since the traffic will be encrypted, it is very useful to turn on debug
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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149 * information within libcurl to see what is happening during the
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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150 * transfer */
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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151 curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
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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152
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parents:
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153 /* Send the message */
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:
diff changeset
154 res = curl_easy_perform(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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155
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
156 /* Check for errors */
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:
diff changeset
157 if(res != CURLE_OK)
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:
diff changeset
158 fprintf(stderr, "curl_easy_perform() failed: %s\n",
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:
diff changeset
159 curl_easy_strerror(res));
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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160
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:
diff changeset
161 /* Free the list of recipients */
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:
diff changeset
162 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.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
163
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:
diff changeset
164 /* 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:
diff changeset
165 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:
diff changeset
166 }
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:
diff changeset
167
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
168 return (int)res;
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:
diff changeset
169 }