1 /***************************************************************************
2 * _ _ ____ _
3 * Project ___| | | | _ \| |
4 * / __| | | | |_) | |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
9 *
10 * This software is licensed as described in the file COPYING, which
11 * you should have received as part of this distribution. The terms
12 * are also available at https://curl.se/docs/copyright.html.
13 *
14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
15 * copies of the Software, and permit persons to whom the Software is
16 * furnished to do so, under the terms of the COPYING file.
17 *
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
20 *
21 * SPDX-License-Identifier: curl
22 *
23 ***************************************************************************/
24
25 /* <DESC>
26 * Send email with IMAP
27 * </DESC>
28 */
29
30 #include <stdio.h>
31 #include <string.h>
32 #include <curl/curl.h>
33
34 /* This is a simple example showing how to send mail using libcurl's IMAP
35 * capabilities.
36 *
37 * Note that this example requires libcurl 7.30.0 or above.
38 */
39
40 #define FROM "<sender@example.org>"
41 #define TO "<addressee@example.net>"
42 #define CC "<info@example.org>"
43
44 static const char *payload_text =
45 "Date: Mon, 29 Nov 2010 21:54:29 +1100\r\n"
46 "To: " TO "\r\n"
47 "From: " FROM "(Example User)\r\n"
48 "Cc: " CC "(Another example User)\r\n"
49 "Message-ID: "
50 "<dcd7cb36-11db-487a-9f3a-e652a9458efd@rfcpedant.example.org>\r\n"
51 "Subject: IMAP example message\r\n"
52 "\r\n" /* empty line to divide headers from body, see RFC 5322 */
53 "The body of the message starts here.\r\n"
54 "\r\n"
55 "It could be a lot of lines, could be MIME encoded, whatever.\r\n"
56 "Check RFC 5322.\r\n";
57
58 struct upload_status {
59 size_t bytes_read;
60 };
61
payload_source(char * ptr,size_t size,size_t nmemb,void * userp)62 static size_t payload_source(char *ptr, size_t size, size_t nmemb, void *userp)
63 {
64 struct upload_status *upload_ctx = (struct upload_status *)userp;
65 const char *data;
66 size_t room = size * nmemb;
67
68 if((size == 0) || (nmemb == 0) || ((size*nmemb) < 1)) {
69 return 0;
70 }
71
72 data = &payload_text[upload_ctx->bytes_read];
73
74 if(*data) {
75 size_t len = strlen(data);
76 if(room < len)
77 len = room;
78 memcpy(ptr, data, len);
79 upload_ctx->bytes_read += len;
80
81 return len;
82 }
83
84 return 0;
85 }
86
main(void)87 int main(void)
88 {
89 CURL *curl;
90 CURLcode res = CURLE_OK;
91
92 curl = curl_easy_init();
93 if(curl) {
94 size_t filesize;
95 long infilesize = LONG_MAX;
96 struct upload_status upload_ctx = { 0 };
97
98 /* Set username and password */
99 curl_easy_setopt(curl, CURLOPT_USERNAME, "user");
100 curl_easy_setopt(curl, CURLOPT_PASSWORD, "secret");
101
102 /* This creates a new message in folder "Sent". */
103 curl_easy_setopt(curl, CURLOPT_URL, "imap://imap.example.com/Sent");
104
105 /* In this case, we are using a callback function to specify the data. You
106 * could just use the CURLOPT_READDATA option to specify a FILE pointer to
107 * read from. */
108 curl_easy_setopt(curl, CURLOPT_READFUNCTION, payload_source);
109 curl_easy_setopt(curl, CURLOPT_READDATA, &upload_ctx);
110 curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
111
112 filesize = strlen(payload_text);
113 if(filesize <= LONG_MAX)
114 infilesize = (long)filesize;
115 curl_easy_setopt(curl, CURLOPT_INFILESIZE, infilesize);
116
117 /* Perform the append */
118 res = curl_easy_perform(curl);
119
120 /* Check for errors */
121 if(res != CURLE_OK)
122 fprintf(stderr, "curl_easy_perform() failed: %s\n",
123 curl_easy_strerror(res));
124
125 /* Always cleanup */
126 curl_easy_cleanup(curl);
127 }
128
129 return (int)res;
130 }
131
