154 lines
4.6 KiB
C
154 lines
4.6 KiB
C
/***************************************************************************
|
|
* _ _ ____ _
|
|
* Project ___| | | | _ \| |
|
|
* / __| | | | |_) | |
|
|
* | (__| |_| | _ <| |___
|
|
* \___|\___/|_| \_\_____|
|
|
*
|
|
* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
|
|
*
|
|
* This software is licensed as described in the file COPYING, which
|
|
* you should have received as part of this distribution. The terms
|
|
* are also available at https://curl.se/docs/copyright.html.
|
|
*
|
|
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
|
|
* copies of the Software, and permit persons to whom the Software is
|
|
* furnished to do so, under the terms of the COPYING file.
|
|
*
|
|
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
|
* KIND, either express or implied.
|
|
*
|
|
* SPDX-License-Identifier: curl
|
|
*
|
|
***************************************************************************/
|
|
|
|
/* <DESC>
|
|
* Send SMTP email with the multi interface
|
|
* </DESC>
|
|
*/
|
|
|
|
#include <string.h>
|
|
#include <curl/curl.h>
|
|
|
|
/* This is an example showing how to send mail using libcurl's SMTP
|
|
* capabilities. It builds on the smtp-mail.c example to demonstrate how to use
|
|
* libcurl's multi interface.
|
|
*/
|
|
|
|
#define FROM_MAIL "<sender@example.com>"
|
|
#define TO_MAIL "<recipient@example.com>"
|
|
#define CC_MAIL "<info@example.com>"
|
|
|
|
static const char *payload_text =
|
|
"Date: Mon, 29 Nov 2010 21:54:29 +1100\r\n"
|
|
"To: " TO_MAIL "\r\n"
|
|
"From: " FROM_MAIL "\r\n"
|
|
"Cc: " CC_MAIL "\r\n"
|
|
"Message-ID: <dcd7cb36-11db-487a-9f3a-e652a9458efd@"
|
|
"rfcpedant.example.org>\r\n"
|
|
"Subject: SMTP example message\r\n"
|
|
"\r\n" /* empty line to divide headers from body, see RFC 5322 */
|
|
"The body of the message starts here.\r\n"
|
|
"\r\n"
|
|
"It could be a lot of lines, could be MIME encoded, whatever.\r\n"
|
|
"Check RFC 5322.\r\n";
|
|
|
|
struct upload_status {
|
|
size_t bytes_read;
|
|
};
|
|
|
|
static size_t payload_source(char *ptr, size_t size, size_t nmemb, void *userp)
|
|
{
|
|
struct upload_status *upload_ctx = (struct upload_status *)userp;
|
|
const char *data;
|
|
size_t room = size * nmemb;
|
|
|
|
if((size == 0) || (nmemb == 0) || ((size*nmemb) < 1)) {
|
|
return 0;
|
|
}
|
|
|
|
data = &payload_text[upload_ctx->bytes_read];
|
|
|
|
if(data) {
|
|
size_t len = strlen(data);
|
|
if(room < len)
|
|
len = room;
|
|
memcpy(ptr, data, len);
|
|
upload_ctx->bytes_read += len;
|
|
|
|
return len;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int main(void)
|
|
{
|
|
CURL *curl;
|
|
CURLM *mcurl;
|
|
int still_running = 1;
|
|
struct curl_slist *recipients = NULL;
|
|
struct upload_status upload_ctx = { 0 };
|
|
|
|
curl_global_init(CURL_GLOBAL_DEFAULT);
|
|
|
|
curl = curl_easy_init();
|
|
if(!curl)
|
|
return 1;
|
|
|
|
mcurl = curl_multi_init();
|
|
if(!mcurl)
|
|
return 2;
|
|
|
|
/* This is the URL for your mailserver */
|
|
curl_easy_setopt(curl, CURLOPT_URL, "smtp://mail.example.com");
|
|
|
|
/* Note that this option is not strictly required, omitting it results in
|
|
* libcurl sending the MAIL FROM command with empty sender data. All
|
|
* autoresponses should have an empty reverse-path, and should be directed
|
|
* to the address in the reverse-path which triggered them. Otherwise, they
|
|
* could cause an endless loop. See RFC 5321 Section 4.5.5 for more details.
|
|
*/
|
|
curl_easy_setopt(curl, CURLOPT_MAIL_FROM, FROM_MAIL);
|
|
|
|
/* Add two recipients, in this particular case they correspond to the
|
|
* To: and Cc: addressees in the header, but they could be any kind of
|
|
* recipient. */
|
|
recipients = curl_slist_append(recipients, TO_MAIL);
|
|
recipients = curl_slist_append(recipients, CC_MAIL);
|
|
curl_easy_setopt(curl, CURLOPT_MAIL_RCPT, recipients);
|
|
|
|
/* We are using a callback function to specify the payload (the headers and
|
|
* body of the message). You could just use the CURLOPT_READDATA option to
|
|
* specify a FILE pointer to read from. */
|
|
curl_easy_setopt(curl, CURLOPT_READFUNCTION, payload_source);
|
|
curl_easy_setopt(curl, CURLOPT_READDATA, &upload_ctx);
|
|
curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
|
|
|
|
/* Tell the multi stack about our easy handle */
|
|
curl_multi_add_handle(mcurl, curl);
|
|
|
|
do {
|
|
CURLMcode mc = curl_multi_perform(mcurl, &still_running);
|
|
|
|
if(still_running)
|
|
/* wait for activity, timeout or "nothing" */
|
|
mc = curl_multi_poll(mcurl, NULL, 0, 1000, NULL);
|
|
|
|
if(mc)
|
|
break;
|
|
|
|
} while(still_running);
|
|
|
|
/* Free the list of recipients */
|
|
curl_slist_free_all(recipients);
|
|
|
|
/* Always cleanup */
|
|
curl_multi_remove_handle(mcurl, curl);
|
|
curl_multi_cleanup(mcurl);
|
|
curl_easy_cleanup(curl);
|
|
curl_global_cleanup();
|
|
|
|
return 0;
|
|
}
|