/*************************************************************************** * _ _ ____ _ * Project ___| | | | _ \| | * / __| | | | |_) | | * | (__| |_| | _ <| |___ * \___|\___/|_| \_\_____| * * Copyright (C) 1998 - 2011, 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 http://curl.haxx.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. * ***************************************************************************/ /* This is an example application source code sending SMTP mail using the * multi interface. */ #include <string.h> #include <curl/curl.h> /* * This is the list of basic details you need to tweak to get things right. */ #define USERNAME "user@example.com" #define PASSWORD "123qwerty" #define SMTPSERVER "smtp.example.com" #define SMTPPORT ":587" /* it is a colon+port string, but you can set it to "" to use the default port */ #define RECIPIENT "<recipient@example.com>" #define MAILFROM "<realuser@example.com>" #define MULTI_PERFORM_HANG_TIMEOUT 60 * 1000 /* Note that you should include the actual meta data headers here as well if you want the mail to have a Subject, another From:, show a To: or whatever you think your mail should feature! */ static const char *text[]={ "one\n", "two\n", "three\n", " Hello, this is CURL email SMTP\n", NULL }; struct WriteThis { int counter; }; static size_t read_callback(void *ptr, size_t size, size_t nmemb, void *userp) { struct WriteThis *pooh = (struct WriteThis *)userp; const char *data; if(size*nmemb < 1) return 0; data = text[pooh->counter]; if(data) { size_t len = strlen(data); memcpy(ptr, data, len); pooh->counter++; /* advance pointer */ return len; } return 0; /* no more data left to deliver */ } static struct timeval tvnow(void) { /* ** time() returns the value of time in seconds since the Epoch. */ struct timeval now; now.tv_sec = (long)time(NULL); now.tv_usec = 0; return now; } static long tvdiff(struct timeval newer, struct timeval older) { return (newer.tv_sec-older.tv_sec)*1000+ (newer.tv_usec-older.tv_usec)/1000; } int main(void) { CURL *curl; CURLM *mcurl; int still_running = 1; struct timeval mp_start; struct WriteThis pooh; struct curl_slist* rcpt_list = NULL; pooh.counter = 0; curl_global_init(CURL_GLOBAL_DEFAULT); curl = curl_easy_init(); if(!curl) return 1; mcurl = curl_multi_init(); if(!mcurl) return 2; rcpt_list = curl_slist_append(rcpt_list, RECIPIENT); /* more addresses can be added here rcpt_list = curl_slist_append(rcpt_list, "<others@example.com>"); */ curl_easy_setopt(curl, CURLOPT_URL, "smtp://" SMTPSERVER SMTPPORT); curl_easy_setopt(curl, CURLOPT_USERNAME, USERNAME); curl_easy_setopt(curl, CURLOPT_PASSWORD, PASSWORD); curl_easy_setopt(curl, CURLOPT_READFUNCTION, read_callback); curl_easy_setopt(curl, CURLOPT_MAIL_FROM, MAILFROM); curl_easy_setopt(curl, CURLOPT_MAIL_RCPT, rcpt_list); curl_easy_setopt(curl, CURLOPT_USE_SSL, (long)CURLUSESSL_ALL); curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0L); curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0L); curl_easy_setopt(curl, CURLOPT_READDATA, &pooh); curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L); curl_easy_setopt(curl, CURLOPT_SSLVERSION, 0L); curl_easy_setopt(curl, CURLOPT_SSL_SESSIONID_CACHE, 0L); curl_multi_add_handle(mcurl, curl); mp_start = tvnow(); /* we start some action by calling perform right away */ curl_multi_perform(mcurl, &still_running); while(still_running) { struct timeval timeout; int rc; /* select() return code */ fd_set fdread; fd_set fdwrite; fd_set fdexcep; int maxfd = -1; long curl_timeo = -1; FD_ZERO(&fdread); FD_ZERO(&fdwrite); FD_ZERO(&fdexcep); /* set a suitable timeout to play around with */ timeout.tv_sec = 1; timeout.tv_usec = 0; curl_multi_timeout(mcurl, &curl_timeo); if(curl_timeo >= 0) { timeout.tv_sec = curl_timeo / 1000; if(timeout.tv_sec > 1) timeout.tv_sec = 1; else timeout.tv_usec = (curl_timeo % 1000) * 1000; } /* get file descriptors from the transfers */ curl_multi_fdset(mcurl, &fdread, &fdwrite, &fdexcep, &maxfd); /* In a real-world program you OF COURSE check the return code of the function calls. On success, the value of maxfd is guaranteed to be greater or equal than -1. We call select(maxfd + 1, ...), specially in case of (maxfd == -1), we call select(0, ...), which is basically equal to sleep. */ rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout); if (tvdiff(tvnow(), mp_start) > MULTI_PERFORM_HANG_TIMEOUT) { fprintf(stderr, "ABORTING TEST, since it seems " "that it would have run forever.\n"); break; } switch(rc) { case -1: /* select error */ break; case 0: /* timeout */ default: /* action */ curl_multi_perform(mcurl, &still_running); break; } } curl_slist_free_all(rcpt_list); curl_multi_remove_handle(mcurl, curl); curl_multi_cleanup(mcurl); curl_easy_cleanup(curl); curl_global_cleanup(); return 0; }