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/*************************************************************************** *                                  _   _ ____  _ *  Project                     ___| | | |  _ \| | *                             / __| | | | |_) | | *                            | (__| |_| |  _ <| |___ *                             \___|\___/|_| \_\_____| * * Copyright (C) 1998 - 2011, Daniel Stenberg, 
   
    , 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 
    
     #include 
     
      /* * 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 "
      
       "#define MAILFROM "
       
        "#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;   char mp_timedout = 0;   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, "
        
         "); */ curl_easy_setopt(curl, CURLOPT_URL, "smtp://" SMTPSERVER SMTPPORT); // 此处的要带上smtp端口 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_timedout = 0; 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;}
        
       
      
     
    
   

/*************************************************************************** *                                  _   _ ____  _ *  Project                     ___| | | |  _ \| | *                             / __| | | | |_) | | *                            | (__| |_| |  _ <| |___ *                             \___|\___/|_| \_\_____| * * Copyright (C) 1998 - 2016, Daniel Stenberg, 
   
    , 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.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. * ***************************************************************************//* 
    
      * SMTP example using the multi interface * 
     */#include 
    
     #include 
     
      /* 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. * * Note that this example requires libcurl 7.20.0 or above. */#define FROM     "
      
       "#define TO       "
       
        "#define CC       "
        
         "#define MULTI_PERFORM_HANG_TIMEOUT 60 * 1000static const char *payload_text[] = { "Date: Mon, 29 Nov 2010 21:54:29 +1100\r\n", "To: " TO "\r\n", "From: " FROM "(Example User)\r\n", "Cc: " CC "(Another example User)\r\n", "Message-ID: 
         
          \r\n", "Subject: SMTP multi example message\r\n", "\r\n", /* empty line to divide headers from body, see RFC5322 */ "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 RFC5322.\r\n", NULL};struct upload_status { int lines_read;};static size_t payload_source(void *ptr, size_t size, size_t nmemb, void *userp){ struct upload_status *upload_ctx = (struct upload_status *)userp; const char *data; if((size == 0) || (nmemb == 0) || ((size*nmemb) < 1)) { return 0; } data = payload_text[upload_ctx->lines_read]; if(data) { size_t len = strlen(data); memcpy(ptr, data, len); upload_ctx->lines_read++; return len; } return 0;}static struct timeval tvnow(void){ struct timeval now; /* time() returns the value of time in seconds since the epoch */ 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 curl_slist *recipients = NULL; struct upload_status upload_ctx; upload_ctx.lines_read = 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 isn't 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); /* We're 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); /* Record the start time which we can use later */ mp_start = tvnow(); /* We start some action by calling perform right away */ curl_multi_perform(mcurl, &still_running); while(still_running) { struct timeval timeout; fd_set fdread; fd_set fdwrite; fd_set fdexcep; int maxfd = -1; int rc; CURLMcode mc; /* curl_multi_fdset() return code */ long curl_timeo = -1; /* Initialise the file descriptors */ 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 */ mc = curl_multi_fdset(mcurl, &fdread, &fdwrite, &fdexcep, &maxfd); if(mc != CURLM_OK) { fprintf(stderr, "curl_multi_fdset() failed, code %d.\n", mc); break; } /* On success the value of maxfd is guaranteed to be >= -1. We call select(maxfd + 1, ...); specially in case of (maxfd == -1) there are no fds ready yet so we call select(0, ...) --or Sleep() on Windows-- to sleep 100ms, which is the minimum suggested value in the curl_multi_fdset() doc. */ if(maxfd == -1) {#ifdef _WIN32 Sleep(100); rc = 0;#else /* Portable sleep for platforms other than Windows. */ struct timeval wait = { 0, 100 * 1000 }; /* 100ms */ rc = select(0, NULL, NULL, NULL, &wait);#endif } else { /* Note that on some platforms 'timeout' may be modified by select(). If you need access to the original value save a copy beforehand. */ rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout); } if(tvdiff(tvnow(), mp_start) > MULTI_PERFORM_HANG_TIMEOUT) { fprintf(stderr, "ABORTING: Since it seems that we 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; } } /* 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;}