| /*************************************************************************** |
| * _ _ ____ _ |
| * Project ___| | | | _ \| | |
| * / __| | | | |_) | | |
| * | (__| |_| | _ <| |___ |
| * \___|\___/|_| \_\_____| |
| * |
| * Copyright (C) 1998 - 2021, Daniel Stenberg, <[email protected]>, 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. |
| * |
| ***************************************************************************/ |
| |
| /* <DESC> |
| * SMTP example showing how to send mime e-mails |
| * </DESC> |
| */ |
| |
| #include <stdio.h> |
| #include <string.h> |
| #include <curl/curl.h> |
| |
| /* This is a simple example showing how to send mime mail using libcurl's SMTP |
| * capabilities. For an example of using the multi interface please see |
| * smtp-multi.c. |
| * |
| * Note that this example requires libcurl 7.56.0 or above. |
| */ |
| |
| #define FROM "<[email protected]>" |
| #define TO "<[email protected]>" |
| #define CC "<[email protected]>" |
| |
| static const char *headers_text[] = { |
| "Date: Tue, 22 Aug 2017 14:08:43 +0100", |
| "To: " TO, |
| "From: " FROM " (Example User)", |
| "Cc: " CC " (Another example User)", |
| "Message-ID: <dcd7cb36-11db-487a-9f3a-e652a9458efd@" |
| "rfcpedant.example.org>", |
| "Subject: example sending a MIME-formatted message", |
| NULL |
| }; |
| |
| static const char inline_text[] = |
| "This is the inline text message of the e-mail.\r\n" |
| "\r\n" |
| " It could be a lot of lines that would be displayed in an e-mail\r\n" |
| "viewer that is not able to handle HTML.\r\n"; |
| |
| static const char inline_html[] = |
| "<html><body>\r\n" |
| "<p>This is the inline <b>HTML</b> message of the e-mail.</p>" |
| "<br />\r\n" |
| "<p>It could be a lot of HTML data that would be displayed by " |
| "e-mail viewers able to handle HTML.</p>" |
| "</body></html>\r\n"; |
| |
| |
| int main(void) |
| { |
| CURL *curl; |
| CURLcode res = CURLE_OK; |
| |
| curl = curl_easy_init(); |
| if(curl) { |
| struct curl_slist *headers = NULL; |
| struct curl_slist *recipients = NULL; |
| struct curl_slist *slist = NULL; |
| curl_mime *mime; |
| curl_mime *alt; |
| curl_mimepart *part; |
| const char **cpp; |
| |
| /* 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 will result |
| * 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); |
| |
| /* 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); |
| recipients = curl_slist_append(recipients, CC); |
| curl_easy_setopt(curl, CURLOPT_MAIL_RCPT, recipients); |
| |
| /* Build and set the message header list. */ |
| for(cpp = headers_text; *cpp; cpp++) |
| headers = curl_slist_append(headers, *cpp); |
| curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers); |
| |
| /* Build the mime message. */ |
| mime = curl_mime_init(curl); |
| |
| /* The inline part is an alternative proposing the html and the text |
| versions of the e-mail. */ |
| alt = curl_mime_init(curl); |
| |
| /* HTML message. */ |
| part = curl_mime_addpart(alt); |
| curl_mime_data(part, inline_html, CURL_ZERO_TERMINATED); |
| curl_mime_type(part, "text/html"); |
| |
| /* Text message. */ |
| part = curl_mime_addpart(alt); |
| curl_mime_data(part, inline_text, CURL_ZERO_TERMINATED); |
| |
| /* Create the inline part. */ |
| part = curl_mime_addpart(mime); |
| curl_mime_subparts(part, alt); |
| curl_mime_type(part, "multipart/alternative"); |
| slist = curl_slist_append(NULL, "Content-Disposition: inline"); |
| curl_mime_headers(part, slist, 1); |
| |
| /* Add the current source program as an attachment. */ |
| part = curl_mime_addpart(mime); |
| curl_mime_filedata(part, "smtp-mime.c"); |
| curl_easy_setopt(curl, CURLOPT_MIMEPOST, mime); |
| |
| /* Send the message */ |
| res = curl_easy_perform(curl); |
| |
| /* Check for errors */ |
| if(res != CURLE_OK) |
| fprintf(stderr, "curl_easy_perform() failed: %s\n", |
| curl_easy_strerror(res)); |
| |
| /* Free lists. */ |
| curl_slist_free_all(recipients); |
| curl_slist_free_all(headers); |
| |
| /* curl will not send the QUIT command until you call cleanup, so you |
| * should be able to re-use this connection for additional messages |
| * (setting CURLOPT_MAIL_FROM and CURLOPT_MAIL_RCPT as required, and |
| * calling curl_easy_perform() again. It may not be a good idea to keep |
| * the connection open for a very long time though (more than a few |
| * minutes may result in the server timing out the connection), and you do |
| * want to clean up in the end. |
| */ |
| curl_easy_cleanup(curl); |
| |
| /* Free multipart message. */ |
| curl_mime_free(mime); |
| } |
| |
| return (int)res; |
| } |
