| xf.li | 6c8fc1e | 2023-08-12 00:11:09 -0700 | [diff] [blame] | 1 | /*************************************************************************** |
| 2 | * _ _ ____ _ |
| 3 | * Project ___| | | | _ \| | |
| 4 | * / __| | | | |_) | | |
| 5 | * | (__| |_| | _ <| |___ |
| 6 | * \___|\___/|_| \_\_____| |
| 7 | * |
| 8 | * Copyright (C) 1998 - 2022, 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 | * SMTP example showing how to verify an email address |
| 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 verify an email address from an |
| 35 | * SMTP server. |
| 36 | * |
| 37 | * Notes: |
| 38 | * |
| 39 | * 1) This example requires libcurl 7.34.0 or above. |
| 40 | * 2) Not all email servers support this command and even if your email server |
| 41 | * does support it, it may respond with a 252 response code even though the |
| 42 | * address does not exist. |
| 43 | */ |
| 44 | |
| 45 | int main(void) |
| 46 | { |
| 47 | CURL *curl; |
| 48 | CURLcode res; |
| 49 | struct curl_slist *recipients = NULL; |
| 50 | |
| 51 | curl = curl_easy_init(); |
| 52 | if(curl) { |
| 53 | /* This is the URL for your mailserver */ |
| 54 | curl_easy_setopt(curl, CURLOPT_URL, "smtp://mail.example.com"); |
| 55 | |
| 56 | /* Note that the CURLOPT_MAIL_RCPT takes a list, not a char array */ |
| 57 | recipients = curl_slist_append(recipients, "<recipient@example.com>"); |
| 58 | curl_easy_setopt(curl, CURLOPT_MAIL_RCPT, recipients); |
| 59 | |
| 60 | /* Perform the VRFY */ |
| 61 | res = curl_easy_perform(curl); |
| 62 | |
| 63 | /* Check for errors */ |
| 64 | if(res != CURLE_OK) |
| 65 | fprintf(stderr, "curl_easy_perform() failed: %s\n", |
| 66 | curl_easy_strerror(res)); |
| 67 | |
| 68 | /* Free the list of recipients */ |
| 69 | curl_slist_free_all(recipients); |
| 70 | |
| 71 | /* curl will not send the QUIT command until you call cleanup, so you |
| 72 | * should be able to re-use this connection for additional requests. It |
| 73 | * may not be a good idea to keep the connection open for a very long time |
| 74 | * though (more than a few minutes may result in the server timing out the |
| 75 | * connection) and you do want to clean up in the end. |
| 76 | */ |
| 77 | curl_easy_cleanup(curl); |
| 78 | } |
| 79 | |
| 80 | return 0; |
| 81 | } |