Need Help Posting an image from iPhone to php page via POST

[ddavtian]

I am hoping someone can help with this issue ... I grab the image from iPhone's photo library and I am trying to post to a php page using POST, the data gets there but it seems to be corrupted, or at least we can't open it, it sends a png file..Can someone shine some light on this? Here's the code ..

-(void) grabImageUIImage *)theImage {

//creating the url request
NSURL *url = [NSURL URLWithString:@"http://example.com/app/test/"];
NSMutableURLRequest *postRequest = [NSMutableURLRequest requestWithURL:url];

//adding header information
[postRequest setHTTPMethod:@"POST"];

NSString *stringBoundary = [NSString stringWithString:@"0xKhTmLbOuNdArY"];
NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@",stringBoundary];
[postRequest addValue:contentType forHTTPHeaderField: @"Content-Type"];

NSData *imageData = UIImagePNGRepresentation(theImage);

if (imageData == nil) {
NSLog(@"Bad Image");
}

//setting up the body
NSMutableData *postBody = [NSMutableData data];
[postBody appendData:[[NSString stringWithFormat:@"--%@\r\n",stringBoundary] dataUsingEncoding:NSUTF8StringEncoding]];
[postBody appendData:[[NSString stringWithString:@"Content-Disposition: form-data; name=\"sender_email\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[postBody appendData:[[NSString stringWithString:@"ddavtian@maccius.com"] dataUsingEncoding:NSUTF8StringEncoding]];
[postBody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",stringBoundary] dataUsingEncoding:NSUTF8StringEncoding]];
[postBody appendData:[[NSString stringWithString:@"Content-Disposition: form-data; name=\"recipient_emails\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[postBody appendData:[[NSString stringWithString:@"noc@maccius.com"] dataUsingEncoding:NSUTF8StringEncoding]];
[postBody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",stringBoundary] dataUsingEncoding:NSUTF8StringEncoding]];
[postBody appendData:[[NSString stringWithString:@"Content-Disposition: form-data; name=\"postcard_message\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[postBody appendData:[[NSString stringWithString:@"hello this is a test"] dataUsingEncoding:NSUTF8StringEncoding]];
[postBody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",stringBoundary] dataUsingEncoding:NSUTF8StringEncoding]];
[postBody appendData:[[NSString stringWithString:@"Content-Disposition: form-data; name=\"ext\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[postBody appendData:[[NSString stringWithString:@"png"] dataUsingEncoding:NSUTF8StringEncoding]];
[postBody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",stringBoundary] dataUsingEncoding:NSUTF8StringEncoding]];
[postBody appendData:[[NSString stringWithString:@"Content-Disposition: form-data; name=\"postcard\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
// [postBody appendData:[[NSString stringWithString:@"Content-Type: image/png\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
// [postBody appendData:[[NSString stringWithString:@"Content-Type: application/octet-stream\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[postBody appendData:[[NSData alloc] initWithData:imageData]];
[postBody appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n",stringBoundary] dataUsingEncoding:NSUTF8StringEncoding]];
[postRequest setHTTPBodyostBody];

NSURLConnection *connectionResponse = [[NSURLConnection alloc] initWithRequestostRequest delegate:self];

if (!connectionResponse) {
NSLog(@"Failed to submit request");
} else {
NSLog(@"Request submitted");
}
}

[bonehead]

If I had to guess, I'd say that your multipart boundaries aren't quite right, or else your server isn't set up correctly to accept multipart POSTs.

Have you tried the simpler test of just sending a single image's data in the body of a POST, rather than diving into multipart?

[ddavtian]

I have not tried that but I will, here's the php file that will accept the data ...

if(!isset($_REQUEST['sender_email']) || !isset($_REQUEST['ext']) ){

echo "result=fail&errorMsg=invalid request";
exit;
} else {

$headers = 'From: hello@example.com' . "\r\n" .
'Reply-To: hello@example.com' . "\r\n" .
'X-Mailer: PHP/' . phpversion();

$email = $_REQUEST['sender_email'];

$msg = "";
foreach ($_REQUEST as $k => $v) {
$msg .= " $k = $v\n";
}



mail($email, "Microphone Check", $msg, $headers);
echo "result=success&email=" . $email;
}

if(isset($_REQUEST['postcard'])){


$ext = $_REQUEST['ext'];

// define the image
$file = $_REQUEST['postcard']; //base64_decode($_REQUEST['postcard']);

// define the file name
$filename = time();

// define destination path to image
$destPath = "../postcards/" . $filename . "." . $ext;

// save the image
try {

@file_put_contents($destPath, $file);

} catch (Exception $ex) {

echo "&result=failed&errorMsg=" . urlencode($ex);
}

}

[rhuettl]

Hi,

we have implemented posting some data (a photo made by the camera too) via JSON-String to URL. At first our image was corrupt too. You nee to encode your NSData to a Base64 and decode it on the server sid (we are using C#.NET) - that worked in both directions for us with png, jpg,...

Cheers
Ralf

[hijinks]

I have a blog post about this

Post a UIImage to the web | Iphone Noob

Looks like your boundaries are bad