1*6236dae4SAndroid Build Coastguard Worker /***************************************************************************
2*6236dae4SAndroid Build Coastguard Worker * _ _ ____ _
3*6236dae4SAndroid Build Coastguard Worker * Project ___| | | | _ \| |
4*6236dae4SAndroid Build Coastguard Worker * / __| | | | |_) | |
5*6236dae4SAndroid Build Coastguard Worker * | (__| |_| | _ <| |___
6*6236dae4SAndroid Build Coastguard Worker * \___|\___/|_| \_\_____|
7*6236dae4SAndroid Build Coastguard Worker *
8*6236dae4SAndroid Build Coastguard Worker * Copyright (C) Daniel Stenberg, <[email protected]>, et al.
9*6236dae4SAndroid Build Coastguard Worker *
10*6236dae4SAndroid Build Coastguard Worker * This software is licensed as described in the file COPYING, which
11*6236dae4SAndroid Build Coastguard Worker * you should have received as part of this distribution. The terms
12*6236dae4SAndroid Build Coastguard Worker * are also available at https://curl.se/docs/copyright.html.
13*6236dae4SAndroid Build Coastguard Worker *
14*6236dae4SAndroid Build Coastguard Worker * You may opt to use, copy, modify, merge, publish, distribute and/or sell
15*6236dae4SAndroid Build Coastguard Worker * copies of the Software, and permit persons to whom the Software is
16*6236dae4SAndroid Build Coastguard Worker * furnished to do so, under the terms of the COPYING file.
17*6236dae4SAndroid Build Coastguard Worker *
18*6236dae4SAndroid Build Coastguard Worker * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19*6236dae4SAndroid Build Coastguard Worker * KIND, either express or implied.
20*6236dae4SAndroid Build Coastguard Worker *
21*6236dae4SAndroid Build Coastguard Worker * SPDX-License-Identifier: curl
22*6236dae4SAndroid Build Coastguard Worker *
23*6236dae4SAndroid Build Coastguard Worker ***************************************************************************/
24*6236dae4SAndroid Build Coastguard Worker
25*6236dae4SAndroid Build Coastguard Worker /* <DESC>
26*6236dae4SAndroid Build Coastguard Worker * Send SMTP mime emails
27*6236dae4SAndroid Build Coastguard Worker * </DESC>
28*6236dae4SAndroid Build Coastguard Worker */
29*6236dae4SAndroid Build Coastguard Worker
30*6236dae4SAndroid Build Coastguard Worker #include <stdio.h>
31*6236dae4SAndroid Build Coastguard Worker #include <string.h>
32*6236dae4SAndroid Build Coastguard Worker #include <curl/curl.h>
33*6236dae4SAndroid Build Coastguard Worker
34*6236dae4SAndroid Build Coastguard Worker /* This is a simple example showing how to send mime mail using libcurl's SMTP
35*6236dae4SAndroid Build Coastguard Worker * capabilities. For an example of using the multi interface please see
36*6236dae4SAndroid Build Coastguard Worker * smtp-multi.c.
37*6236dae4SAndroid Build Coastguard Worker *
38*6236dae4SAndroid Build Coastguard Worker * Note that this example requires libcurl 7.56.0 or above.
39*6236dae4SAndroid Build Coastguard Worker */
40*6236dae4SAndroid Build Coastguard Worker
41*6236dae4SAndroid Build Coastguard Worker #define FROM "<[email protected]>"
42*6236dae4SAndroid Build Coastguard Worker #define TO "<[email protected]>"
43*6236dae4SAndroid Build Coastguard Worker #define CC "<[email protected]>"
44*6236dae4SAndroid Build Coastguard Worker
45*6236dae4SAndroid Build Coastguard Worker static const char *headers_text[] = {
46*6236dae4SAndroid Build Coastguard Worker "Date: Tue, 22 Aug 2017 14:08:43 +0100",
47*6236dae4SAndroid Build Coastguard Worker "To: " TO,
48*6236dae4SAndroid Build Coastguard Worker "From: " FROM " (Example User)",
49*6236dae4SAndroid Build Coastguard Worker "Cc: " CC " (Another example User)",
50*6236dae4SAndroid Build Coastguard Worker "Message-ID: <dcd7cb36-11db-487a-9f3a-e652a9458efd@"
51*6236dae4SAndroid Build Coastguard Worker "rfcpedant.example.org>",
52*6236dae4SAndroid Build Coastguard Worker "Subject: example sending a MIME-formatted message",
53*6236dae4SAndroid Build Coastguard Worker NULL
54*6236dae4SAndroid Build Coastguard Worker };
55*6236dae4SAndroid Build Coastguard Worker
56*6236dae4SAndroid Build Coastguard Worker static const char inline_text[] =
57*6236dae4SAndroid Build Coastguard Worker "This is the inline text message of the email.\r\n"
58*6236dae4SAndroid Build Coastguard Worker "\r\n"
59*6236dae4SAndroid Build Coastguard Worker " It could be a lot of lines that would be displayed in an email\r\n"
60*6236dae4SAndroid Build Coastguard Worker "viewer that is not able to handle HTML.\r\n";
61*6236dae4SAndroid Build Coastguard Worker
62*6236dae4SAndroid Build Coastguard Worker static const char inline_html[] =
63*6236dae4SAndroid Build Coastguard Worker "<html><body>\r\n"
64*6236dae4SAndroid Build Coastguard Worker "<p>This is the inline <b>HTML</b> message of the email.</p>"
65*6236dae4SAndroid Build Coastguard Worker "<br />\r\n"
66*6236dae4SAndroid Build Coastguard Worker "<p>It could be a lot of HTML data that would be displayed by "
67*6236dae4SAndroid Build Coastguard Worker "email viewers able to handle HTML.</p>"
68*6236dae4SAndroid Build Coastguard Worker "</body></html>\r\n";
69*6236dae4SAndroid Build Coastguard Worker
70*6236dae4SAndroid Build Coastguard Worker
main(void)71*6236dae4SAndroid Build Coastguard Worker int main(void)
72*6236dae4SAndroid Build Coastguard Worker {
73*6236dae4SAndroid Build Coastguard Worker CURL *curl;
74*6236dae4SAndroid Build Coastguard Worker CURLcode res = CURLE_OK;
75*6236dae4SAndroid Build Coastguard Worker
76*6236dae4SAndroid Build Coastguard Worker curl = curl_easy_init();
77*6236dae4SAndroid Build Coastguard Worker if(curl) {
78*6236dae4SAndroid Build Coastguard Worker struct curl_slist *headers = NULL;
79*6236dae4SAndroid Build Coastguard Worker struct curl_slist *recipients = NULL;
80*6236dae4SAndroid Build Coastguard Worker struct curl_slist *slist = NULL;
81*6236dae4SAndroid Build Coastguard Worker curl_mime *mime;
82*6236dae4SAndroid Build Coastguard Worker curl_mime *alt;
83*6236dae4SAndroid Build Coastguard Worker curl_mimepart *part;
84*6236dae4SAndroid Build Coastguard Worker const char **cpp;
85*6236dae4SAndroid Build Coastguard Worker
86*6236dae4SAndroid Build Coastguard Worker /* This is the URL for your mailserver */
87*6236dae4SAndroid Build Coastguard Worker curl_easy_setopt(curl, CURLOPT_URL, "smtp://mail.example.com");
88*6236dae4SAndroid Build Coastguard Worker
89*6236dae4SAndroid Build Coastguard Worker /* Note that this option is not strictly required, omitting it results in
90*6236dae4SAndroid Build Coastguard Worker * libcurl sending the MAIL FROM command with empty sender data. All
91*6236dae4SAndroid Build Coastguard Worker * autoresponses should have an empty reverse-path, and should be directed
92*6236dae4SAndroid Build Coastguard Worker * to the address in the reverse-path which triggered them. Otherwise,
93*6236dae4SAndroid Build Coastguard Worker * they could cause an endless loop. See RFC 5321 Section 4.5.5 for more
94*6236dae4SAndroid Build Coastguard Worker * details.
95*6236dae4SAndroid Build Coastguard Worker */
96*6236dae4SAndroid Build Coastguard Worker curl_easy_setopt(curl, CURLOPT_MAIL_FROM, FROM);
97*6236dae4SAndroid Build Coastguard Worker
98*6236dae4SAndroid Build Coastguard Worker /* Add two recipients, in this particular case they correspond to the
99*6236dae4SAndroid Build Coastguard Worker * To: and Cc: addressees in the header, but they could be any kind of
100*6236dae4SAndroid Build Coastguard Worker * recipient. */
101*6236dae4SAndroid Build Coastguard Worker recipients = curl_slist_append(recipients, TO);
102*6236dae4SAndroid Build Coastguard Worker recipients = curl_slist_append(recipients, CC);
103*6236dae4SAndroid Build Coastguard Worker curl_easy_setopt(curl, CURLOPT_MAIL_RCPT, recipients);
104*6236dae4SAndroid Build Coastguard Worker
105*6236dae4SAndroid Build Coastguard Worker /* allow one of the recipients to fail and still consider it okay */
106*6236dae4SAndroid Build Coastguard Worker curl_easy_setopt(curl, CURLOPT_MAIL_RCPT_ALLOWFAILS, 1L);
107*6236dae4SAndroid Build Coastguard Worker
108*6236dae4SAndroid Build Coastguard Worker /* Build and set the message header list. */
109*6236dae4SAndroid Build Coastguard Worker for(cpp = headers_text; *cpp; cpp++)
110*6236dae4SAndroid Build Coastguard Worker headers = curl_slist_append(headers, *cpp);
111*6236dae4SAndroid Build Coastguard Worker curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
112*6236dae4SAndroid Build Coastguard Worker
113*6236dae4SAndroid Build Coastguard Worker /* Build the mime message. */
114*6236dae4SAndroid Build Coastguard Worker mime = curl_mime_init(curl);
115*6236dae4SAndroid Build Coastguard Worker
116*6236dae4SAndroid Build Coastguard Worker /* The inline part is an alternative proposing the html and the text
117*6236dae4SAndroid Build Coastguard Worker versions of the email. */
118*6236dae4SAndroid Build Coastguard Worker alt = curl_mime_init(curl);
119*6236dae4SAndroid Build Coastguard Worker
120*6236dae4SAndroid Build Coastguard Worker /* HTML message. */
121*6236dae4SAndroid Build Coastguard Worker part = curl_mime_addpart(alt);
122*6236dae4SAndroid Build Coastguard Worker curl_mime_data(part, inline_html, CURL_ZERO_TERMINATED);
123*6236dae4SAndroid Build Coastguard Worker curl_mime_type(part, "text/html");
124*6236dae4SAndroid Build Coastguard Worker
125*6236dae4SAndroid Build Coastguard Worker /* Text message. */
126*6236dae4SAndroid Build Coastguard Worker part = curl_mime_addpart(alt);
127*6236dae4SAndroid Build Coastguard Worker curl_mime_data(part, inline_text, CURL_ZERO_TERMINATED);
128*6236dae4SAndroid Build Coastguard Worker
129*6236dae4SAndroid Build Coastguard Worker /* Create the inline part. */
130*6236dae4SAndroid Build Coastguard Worker part = curl_mime_addpart(mime);
131*6236dae4SAndroid Build Coastguard Worker curl_mime_subparts(part, alt);
132*6236dae4SAndroid Build Coastguard Worker curl_mime_type(part, "multipart/alternative");
133*6236dae4SAndroid Build Coastguard Worker slist = curl_slist_append(NULL, "Content-Disposition: inline");
134*6236dae4SAndroid Build Coastguard Worker curl_mime_headers(part, slist, 1);
135*6236dae4SAndroid Build Coastguard Worker
136*6236dae4SAndroid Build Coastguard Worker /* Add the current source program as an attachment. */
137*6236dae4SAndroid Build Coastguard Worker part = curl_mime_addpart(mime);
138*6236dae4SAndroid Build Coastguard Worker curl_mime_filedata(part, "smtp-mime.c");
139*6236dae4SAndroid Build Coastguard Worker curl_easy_setopt(curl, CURLOPT_MIMEPOST, mime);
140*6236dae4SAndroid Build Coastguard Worker
141*6236dae4SAndroid Build Coastguard Worker /* Send the message */
142*6236dae4SAndroid Build Coastguard Worker res = curl_easy_perform(curl);
143*6236dae4SAndroid Build Coastguard Worker
144*6236dae4SAndroid Build Coastguard Worker /* Check for errors */
145*6236dae4SAndroid Build Coastguard Worker if(res != CURLE_OK)
146*6236dae4SAndroid Build Coastguard Worker fprintf(stderr, "curl_easy_perform() failed: %s\n",
147*6236dae4SAndroid Build Coastguard Worker curl_easy_strerror(res));
148*6236dae4SAndroid Build Coastguard Worker
149*6236dae4SAndroid Build Coastguard Worker /* Free lists. */
150*6236dae4SAndroid Build Coastguard Worker curl_slist_free_all(recipients);
151*6236dae4SAndroid Build Coastguard Worker curl_slist_free_all(headers);
152*6236dae4SAndroid Build Coastguard Worker
153*6236dae4SAndroid Build Coastguard Worker /* curl does not send the QUIT command until you call cleanup, so you
154*6236dae4SAndroid Build Coastguard Worker * should be able to reuse this connection for additional messages
155*6236dae4SAndroid Build Coastguard Worker * (setting CURLOPT_MAIL_FROM and CURLOPT_MAIL_RCPT as required, and
156*6236dae4SAndroid Build Coastguard Worker * calling curl_easy_perform() again. It may not be a good idea to keep
157*6236dae4SAndroid Build Coastguard Worker * the connection open for a long time though (more than a few minutes may
158*6236dae4SAndroid Build Coastguard Worker * result in the server timing out the connection), and you do want to
159*6236dae4SAndroid Build Coastguard Worker * clean up in the end.
160*6236dae4SAndroid Build Coastguard Worker */
161*6236dae4SAndroid Build Coastguard Worker curl_easy_cleanup(curl);
162*6236dae4SAndroid Build Coastguard Worker
163*6236dae4SAndroid Build Coastguard Worker /* Free multipart message. */
164*6236dae4SAndroid Build Coastguard Worker curl_mime_free(mime);
165*6236dae4SAndroid Build Coastguard Worker }
166*6236dae4SAndroid Build Coastguard Worker
167*6236dae4SAndroid Build Coastguard Worker return (int)res;
168*6236dae4SAndroid Build Coastguard Worker }
169