Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/curl/docs/examples/smtp-mail.c @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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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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23 /* <DESC>
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24 * Send e-mail with SMTP
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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 /*
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33 * For an SMTP example using the multi interface please see smtp-multi.c.
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34 */
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36 /* The libcurl options want plain addresses, the viewable headers in the mail
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37 * can very well get a full name as well.
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38 */
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39 #define FROM_ADDR "<sender@example.org>"
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40 #define TO_ADDR "<addressee@example.net>"
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41 #define CC_ADDR "<info@example.org>"
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43 #define FROM_MAIL "Sender Person " FROM_ADDR
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44 #define TO_MAIL "A Receiver " TO_ADDR
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45 #define CC_MAIL "John CC Smith " CC_ADDR
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47 static const char *payload_text[] = {
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48 "Date: Mon, 29 Nov 2010 21:54:29 +1100\r\n",
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49 "To: " TO_MAIL "\r\n",
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50 "From: " FROM_MAIL "\r\n",
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51 "Cc: " CC_MAIL "\r\n",
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52 "Message-ID: <dcd7cb36-11db-487a-9f3a-e652a9458efd@"
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53 "rfcpedant.example.org>\r\n",
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54 "Subject: SMTP example message\r\n",
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55 "\r\n", /* empty line to divide headers from body, see RFC5322 */
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56 "The body of the message starts here.\r\n",
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57 "\r\n",
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58 "It could be a lot of lines, could be MIME encoded, whatever.\r\n",
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59 "Check RFC5322.\r\n",
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60 NULL
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61 };
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62
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63 struct upload_status {
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64 int lines_read;
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65 };
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66
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67 static size_t payload_source(void *ptr, size_t size, size_t nmemb, void *userp)
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68 {
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69 struct upload_status *upload_ctx = (struct upload_status *)userp;
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70 const char *data;
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71
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72 if((size == 0) || (nmemb == 0) || ((size*nmemb) < 1)) {
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73 return 0;
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74 }
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75
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76 data = payload_text[upload_ctx->lines_read];
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78 if(data) {
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79 size_t len = strlen(data);
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80 memcpy(ptr, data, len);
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81 upload_ctx->lines_read++;
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83 return len;
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84 }
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85
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86 return 0;
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87 }
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89 int main(void)
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90 {
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91 CURL *curl;
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92 CURLcode res = CURLE_OK;
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93 struct curl_slist *recipients = NULL;
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94 struct upload_status upload_ctx;
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96 upload_ctx.lines_read = 0;
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98 curl = curl_easy_init();
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99 if(curl) {
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100 /* This is the URL for your mailserver */
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101 curl_easy_setopt(curl, CURLOPT_URL, "smtp://mail.example.com");
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102
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103 /* Note that this option isn't strictly required, omitting it will result
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104 * in libcurl sending the MAIL FROM command with empty sender data. All
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105 * autoresponses should have an empty reverse-path, and should be directed
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106 * to the address in the reverse-path which triggered them. Otherwise,
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107 * they could cause an endless loop. See RFC 5321 Section 4.5.5 for more
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108 * details.
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109 */
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110 curl_easy_setopt(curl, CURLOPT_MAIL_FROM, FROM_ADDR);
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111
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112 /* Add two recipients, in this particular case they correspond to the
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113 * To: and Cc: addressees in the header, but they could be any kind of
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114 * recipient. */
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115 recipients = curl_slist_append(recipients, TO_ADDR);
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116 recipients = curl_slist_append(recipients, CC_ADDR);
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117 curl_easy_setopt(curl, CURLOPT_MAIL_RCPT, recipients);
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118
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119 /* We're using a callback function to specify the payload (the headers and
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120 * body of the message). You could just use the CURLOPT_READDATA option to
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121 * specify a FILE pointer to read from. */
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122 curl_easy_setopt(curl, CURLOPT_READFUNCTION, payload_source);
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123 curl_easy_setopt(curl, CURLOPT_READDATA, &upload_ctx);
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124 curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
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125
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126 /* Send the message */
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127 res = curl_easy_perform(curl);
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128
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129 /* Check for errors */
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130 if(res != CURLE_OK)
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131 fprintf(stderr, "curl_easy_perform() failed: %s\n",
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132 curl_easy_strerror(res));
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133
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134 /* Free the list of recipients */
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135 curl_slist_free_all(recipients);
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136
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137 /* curl won't send the QUIT command until you call cleanup, so you should
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138 * be able to re-use this connection for additional messages (setting
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139 * CURLOPT_MAIL_FROM and CURLOPT_MAIL_RCPT as required, and calling
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140 * curl_easy_perform() again. It may not be a good idea to keep the
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141 * connection open for a very long time though (more than a few minutes
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142 * may result in the server timing out the connection), and you do want to
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143 * clean up in the end.
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144 */
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145 curl_easy_cleanup(curl);
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146 }
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147
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148 return (int)res;
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149 }