Send email: Difference between revisions
Added C implementation
(Added C implementation) |
|||
Line 173:
</lang>
=={{header|C}}==
Sends mail via the GMail SMTP server, requires [https://curl.haxx.se/libcurl/ libcurl]
{{libheader|libcurl}}
<lang C>
/*Abhishek Ghosh, 13th June 2018*/
#include <curl/curl.h>
#include <string.h>
#include <stdio.h>
#define from "<sender@duniya.com>"
#define to "<addressee@gmail.com>"
#define cc "<info@example.org>"
static const char *payload_text[] = {
"Date: Mon, 13 Jun 2018 11:30:00 +0100\r\n",
"To: " to "\r\n",
"From: " from " (Example User)\r\n",
"Cc: " cc " (Another example User)\r\n",
"Message-ID: <ecd7db36-10ab-437a-9g3a-e652b9458efd@"
"rfcpedant.example.org>\r\n",
"Subject: Sanding mail via C\r\n",
"\r\n",
"This mail is being sent by a C program.\r\n",
"\r\n",
"It connects to the GMail SMTP server, by far, the most popular mail program of all.\r\n",
"Which is also probably written in C.\r\n",
"To C or not to C..............\r\n",
"That is the question.\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;
}
int main(void)
{
CURL *curl;
CURLcode res = CURLE_OK;
struct curl_slist *recipients = NULL;
struct upload_status upload_ctx;
upload_ctx.lines_read = 0;
curl = curl_easy_init();
if(curl) {
curl_easy_setopt(curl, CURLOPT_USERNAME, "user");
curl_easy_setopt(curl, CURLOPT_PASSWORD, "secret");
curl_easy_setopt(curl, CURLOPT_URL, "smtp://smtp.gmail.com:465");
curl_easy_setopt(curl, CURLOPT_USE_SSL, (long)CURLUSESSL_ALL);
curl_easy_setopt(curl, CURLOPT_CAINFO, "/path/to/certificate.pem");
curl_easy_setopt(curl, CURLOPT_MAIL_FROM, from);
recipients = curl_slist_append(recipients, to);
recipients = curl_slist_append(recipients, cc);
curl_easy_setopt(curl, CURLOPT_MAIL_RCPT, recipients);
curl_easy_setopt(curl, CURLOPT_READFUNCTION, payload_source);
curl_easy_setopt(curl, CURLOPT_READDATA, &upload_ctx);
curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
res = curl_easy_perform(curl);
if(res != CURLE_OK)
fprintf(stderr, "curl_easy_perform() failed: %s\n",curl_easy_strerror(res));
curl_slist_free_all(recipients);
curl_easy_cleanup(curl);
}
return (int)res;
}
</lang>
=={{header|C++}}==
| |||