I used this template provided here to email myself using curl: https://www.phidgets.com/?view=articles&article=LIBCURLHowTo
It all worked fine in Linux; however, I'm trying to get it to work in Windows and I'm getting this console message:
curl_easy_perform() failed: Failed sending data to the peer
Process returned 55 (0x37) execution time : 0.165 s
Press any key to continue.
My full code is as follows:
/*
* SMTP example showing how to send e-mails
*
*/
#include <stdio.h>
#include <string.h>
#include <curl\curl.h>
#include <fstream>
#include <Windows.h>
/* This is a simple example showing how to send mail using libcurl's SMTP
* capabilities. For an example of using the multi interface please see
* smtp-multi.c.
*
* Note that this example requires libcurl 7.20.0 or above.
*/
#define FROM "example@example.com"
#define TO "example2@example.com"
static const char *payload_text[] = {
"Date: Mon, 29 Nov 2010 21:54:29 +1100\r\n",
"To: " TO "(Steve)\r\n",
"From: " FROM "(Me)\r\n",
"Subject: hacked_system.txt has been deleted!\r\n",
"\r\n", /* empty line to divide headers from body, see RFC5322 */
"hacked_system.txt has been deleted from SteveOS!\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)
{
{mkdir("C:\\SteveOS");
std::ofstream outfile ("C:\\SteveOS\\hacked_system.txt");
DeleteFile ("C:\\SteveOS\\hacked_system.txt");}
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) {
/* This is the URL for your mailserver */
curl_easy_setopt(curl, CURLOPT_URL, "smtp://smtp.gmail.com:587");
/* 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);
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);
curl_easy_setopt(curl, CURLOPT_USERNAME, "example@example.com");
curl_easy_setopt(curl, CURLOPT_PASSWORD, "xxxxxxxxxxxxxxxxxx");
curl_easy_setopt(curl, CURLOPT_USE_SSL, CURLUSESSL_ALL);
/* Send the message */
res = curl_easy_perform(curl);
/* Check for errors */
if(res != CURLE_OK)
fprintf(stderr, "curl_easy_perform() failed: %s\n",
curl_easy_strerror(res));
/* Free the list of recipients */
curl_slist_free_all(recipients);
/* curl won't send the QUIT command until you call cleanup, so you should
* be able to re-use this connection for additional messages (setting
* CURLOPT_MAIL_FROM and CURLOPT_MAIL_RCPT as required, and calling
* curl_easy_perform() again. It may not be a good idea to keep the
* connection open for a very long time though (more than a few minutes
* may result in the server timing out the connection), and you do want to
* clean up in the end.
*/
curl_easy_cleanup(curl);
}
return (int)res;
}
The reason as to why the email reads that way is because this is a class assignment. Also, I was tasked with creating that hacked_system.txt file and deleting it. The file isn't deleting, though, so now my problem is two-fold. How would I delete the file?
The code that worked on Linux had had two email addresses, a to: and a cc:. I have removed the cc:, but I have not tested that on Linux. To send the email, I had used real email addresses of mine as from: and to:. Also, the password was a Google account app password that I have replaced with x's.
In place of DeleteFile, I had used the Boost libraries on Linux, but it was proving to be not worthwhile to build the libraries for Windows.
I'd greatly appreciate any help. Thank you.
Edit: Could it be because I don't have SSL integrated into libcurl?