I have the following C code:
int main(int argc, char* argv[])
{
CURL *curl;
CURLcode res;
struct stat file_info;
double speed_upload, total_time;
FILE *fd;
fd = fopen(argv[1], "rb"); /* open file to upload */
if(!fd) {
return 1; /* can't continue */
}
/* to get the file size */
if(fstat(fileno(fd), &file_info) != 0) {
return 1; /* can't continue */
}
curl = curl_easy_init();
if(curl) {
/* upload to this place */
curl_easy_setopt(curl, CURLOPT_URL,
"http://www.website.com/index.php");
/* tell it to "upload" to the URL */
curl_easy_setopt(curl, CURLOPT_POST, 1L);
/* set where to read from (on Windows you need to use READFUNCTION too) */
curl_easy_setopt(curl, CURLOPT_READDATA, fd);
/* and give the size of the upload (optional) */
curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE,
(curl_off_t)file_info.st_size);
/* enable verbose for easier tracing */
curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
res = curl_easy_perform(curl);
/* Check for errors */
if(res != CURLE_OK) {
fprintf(stderr, "curl_easy_perform() failed: %s\n",
curl_easy_strerror(res));
}
else {
/* now extract transfer info */
curl_easy_getinfo(curl, CURLINFO_SPEED_UPLOAD, &speed_upload);
curl_easy_getinfo(curl, CURLINFO_TOTAL_TIME, &total_time);
fprintf(stderr, "Speed: %.3f bytes/sec during %.3f seconds\n",
speed_upload, total_time);
}
/* always cleanup */
curl_easy_cleanup(curl);
}
return 0;
}
and the following PHP code:
<?php
header('Access-Control-Allow-Origin: *');
if ($_SERVER['REQUEST_METHOD'] == 'POST' )
{
if( isset( $_FILES["file_entry"] ) )
{
print "file ok";
}
else
{
print "no file sent";
}
}
else
{
print "No post method" . $_SERVER['REQUEST_METHOD'];
}
?>
and html code:
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title></title>
</head>
<body>
<form action="index.php" enctype="multipart/form-data" method="post">
<input type="file" name="file_entry"/>
<input type="submit" value="enviar"/>
</form>
</body>
</html>
If I try to send the file by html, it works fine, but not when I use C and cURL.
Because I don’t know how I can send “file_entry”. How can I emulate submit “file_entry” with C cURL like html does? I try use CURLOPT_POSTFIELDS, but don’t work.
Anyone can help me ?
Thank you
This is because your server end expects a “multipart/form-data” POST and you send a regular “url-encoded” one.
You should instead look into for example the multi-post.c example or the curl_formadd() documentation.
Alternatively you change the server end.