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      8  * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel (at) haxx.se>, et al.
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     10  * This software is licensed as described in the file COPYING, which
     11  * you should have received as part of this distribution. The terms
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     19  * KIND, either express or implied.
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     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 (at) example.org>"
     39 #define TO      "<addressee (at) example.net>"
     40 #define CC      "<info (at) 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 (at) 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   const char **p;
     89   long infilesize;
     90   struct upload_status upload_ctx;
     91 
     92   upload_ctx.lines_read = 0;
     93 
     94   curl = curl_easy_init();
     95   if(curl) {
     96     /* Set username and password */
     97     curl_easy_setopt(curl, CURLOPT_USERNAME, "user");
     98     curl_easy_setopt(curl, CURLOPT_PASSWORD, "secret");
     99 
    100     /* This will create a new message 100. Note that you should perform an
    101      * EXAMINE command to obtain the UID of the next message to create and a
    102      * SELECT to ensure you are creating the message in the OUTBOX. */
    103     curl_easy_setopt(curl, CURLOPT_URL, "imap://imap.example.com/100");
    104 
    105     /* In this case, we're using a callback function to specify the data. You
    106      * could just use the CURLOPT_READDATA option to specify a FILE pointer to
    107      * read from. */
    108     curl_easy_setopt(curl, CURLOPT_READFUNCTION, payload_source);
    109     curl_easy_setopt(curl, CURLOPT_READDATA, &upload_ctx);
    110     curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
    111 
    112     infilesize = 0;
    113     for(p = payload_text; *p; ++p) {
    114       infilesize += (long)strlen(*p);
    115     }
    116     curl_easy_setopt(curl, CURLOPT_INFILESIZE, infilesize);
    117 
    118     /* Perform the append */
    119     res = curl_easy_perform(curl);
    120 
    121     /* Check for errors */
    122     if(res != CURLE_OK)
    123       fprintf(stderr, "curl_easy_perform() failed: %s\n",
    124               curl_easy_strerror(res));
    125 
    126     /* Always cleanup */
    127     curl_easy_cleanup(curl);
    128   }
    129 
    130   return (int)res;
    131 }
    132