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    7:  *
    8:  * Copyright (C) 1998 - 2019, 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.haxx.se/docs/copyright.html.
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   14:  * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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   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:  ***************************************************************************/
   22: 
   23: /* <DESC>
   24:  * IMAP example showing how to send e-mails
   25:  * </DESC>
   26:  */
   27: 
   28: #include <stdio.h>
   29: #include <string.h>
   30: #include <curl/curl.h>
   31: 
   32: /* This is a simple example showing how to send mail using libcurl's IMAP
   33:  * capabilities.
   34:  *
   35:  * Note that this example requires libcurl 7.30.0 or above.
   36:  */
   37: 
   38: #define FROM    "<sender@example.org>"
   39: #define TO      "<addressee@example.net>"
   40: #define CC      "<info@example.org>"
   41: 
   42: static const char *payload_text[] = {
   43:   "Date: Mon, 29 Nov 2010 21:54:29 +1100\r\n",
   44:   "To: " TO "\r\n",
   45:   "From: " FROM "(Example User)\r\n",
   46:   "Cc: " CC "(Another example User)\r\n",
   47:   "Message-ID: "
   48:   "<dcd7cb36-11db-487a-9f3a-e652a9458efd@rfcpedant.example.org>\r\n",
   49:   "Subject: IMAP example message\r\n",
   50:   "\r\n", /* empty line to divide headers from body, see RFC5322 */
   51:   "The body of the message starts here.\r\n",
   52:   "\r\n",
   53:   "It could be a lot of lines, could be MIME encoded, whatever.\r\n",
   54:   "Check RFC5322.\r\n",
   55:   NULL
   56: };
   57: 
   58: struct upload_status {
   59:   int lines_read;
   60: };
   61: 
   62: static size_t payload_source(void *ptr, size_t size, size_t nmemb, void *userp)
   63: {
   64:   struct upload_status *upload_ctx = (struct upload_status *)userp;
   65:   const char *data;
   66: 
   67:   if((size == 0) || (nmemb == 0) || ((size*nmemb) < 1)) {
   68:     return 0;
   69:   }
   70: 
   71:   data = payload_text[upload_ctx->lines_read];
   72: 
   73:   if(data) {
   74:     size_t len = strlen(data);
   75:     memcpy(ptr, data, len);
   76:     upload_ctx->lines_read++;
   77: 
   78:     return len;
   79:   }
   80: 
   81:   return 0;
   82: }
   83: 
   84: int main(void)
   85: {
   86:   CURL *curl;
   87:   CURLcode res = CURLE_OK;
   88: 
   89:   curl = curl_easy_init();
   90:   if(curl) {
   91:     const char **p;
   92:     long infilesize;
   93:     struct upload_status upload_ctx;
   94: 
   95:     upload_ctx.lines_read = 0;
   96: 
   97:     /* Set username and password */
   98:     curl_easy_setopt(curl, CURLOPT_USERNAME, "user");
   99:     curl_easy_setopt(curl, CURLOPT_PASSWORD, "secret");
  100: 
  101:     /* This will create a new message 100. Note that you should perform an
  102:      * EXAMINE command to obtain the UID of the next message to create and a
  103:      * SELECT to ensure you are creating the message in the OUTBOX. */
  104:     curl_easy_setopt(curl, CURLOPT_URL, "imap://imap.example.com/100");
  105: 
  106:     /* In this case, we're using a callback function to specify the data. You
  107:      * could just use the CURLOPT_READDATA option to specify a FILE pointer to
  108:      * read from. */
  109:     curl_easy_setopt(curl, CURLOPT_READFUNCTION, payload_source);
  110:     curl_easy_setopt(curl, CURLOPT_READDATA, &upload_ctx);
  111:     curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
  112: 
  113:     infilesize = 0;
  114:     for(p = payload_text; *p; ++p) {
  115:       infilesize += (long)strlen(*p);
  116:     }
  117:     curl_easy_setopt(curl, CURLOPT_INFILESIZE, infilesize);
  118: 
  119:     /* Perform the append */
  120:     res = curl_easy_perform(curl);
  121: 
  122:     /* Check for errors */
  123:     if(res != CURLE_OK)
  124:       fprintf(stderr, "curl_easy_perform() failed: %s\n",
  125:               curl_easy_strerror(res));
  126: 
  127:     /* Always cleanup */
  128:     curl_easy_cleanup(curl);
  129:   }
  130: 
  131:   return (int)res;
  132: }