instagram.php

<?php
# adapted from http://lancenewman.me/posting-a-photo-to-instagram-without-a-phone/

// Set the username and password of the account that you wish to post a photo to
$username = '';
$password = '';

// Set the caption for the photo
$caption = "#lightbooth";

// Set the path to the file that you wish to post.
// This must be jpeg format and it must be a perfect square
$filename = 'images/instagram.jpg';

// Define the user agent
$agent = GenerateUserAgent();

// Define the GuID
$guid = GenerateGuid();

// Set the devide ID
$device_id = "android-" . $guid;

/* LOG IN */
// You must be logged in to the account that you wish to post a photo too
// Set all of the parameters in the string, and then sign it with their API key using SHA-256
$data = '{"device_id":"' . $device_id . '","guid":"' . $guid . '","username":"' . $username . '","password":"' . $password . '","Content-Type":"application/x-www-form-urlencoded; charset=UTF-8"}';
$sig = GenerateSignature($data);
$data = 'signed_body=' . $sig . '.' . urlencode($data) . '&ig_sig_key_version=4';
$login = SendRequest('accounts/login/', true, $data, $agent, false);

if (strpos($login[1], "Sorry, an error occurred while processing this request.")) {
    echo "Request failed, there's a chance that this proxy/ip is blocked";
} else {
    if (empty($login[1])) {
        echo "Empty response received from the server while trying to login";
    } else {
        // Decode the array that is returned
        $obj = @json_decode($login[1], true);

        if (empty($obj)) {
            echo "Could not decode the response: " . $body;
        } else {
            // Post the picture
            $data = GetPostData($filename);
            $post = SendRequest('media/upload/', true, $data, $agent, true);

            if (empty($post[1])) {
                echo "Empty response received from the server while trying to post the image";
            } else {
                // Decode the response 
                $obj = @json_decode($post[1], true);
                var_dump($obj);
                if (empty($obj)) {
                    echo "Could not decode the response";
                } else {
                    $status = $obj['status'];

                    if ($status == 'ok') {
                        // Remove and line breaks from the caption
                        $caption = preg_replace("/\r|\n/", "", $caption);

                        $media_id = $obj['media_id'];
                        $device_id = "android-" . $guid;
                        $data = '{"device_id":"' . $device_id . '","guid":"' . $guid . '","media_id":"' . $media_id . '","caption":"' . trim($caption) . '","device_timestamp":"' . time() . '","source_type":"5","filter_type":"0","extra":"{}","Content-Type":"application/x-www-form-urlencoded; charset=UTF-8"}';
                        $sig = GenerateSignature($data);
                        $new_data = 'signed_body=' . $sig . '.' . urlencode($data) . '&ig_sig_key_version=4';

                        // Now, configure the photo
                        $conf = SendRequest('media/configure/', true, $new_data, $agent, true);

                        if (empty($conf[1])) {
                            echo "Empty response received from the server while trying to configure the image";
                        } else {
                            if (strpos($conf[1], "login_required")) {
                                echo "You are not logged in. There's a chance that the account is banned";
                            } else {
                                $obj = @json_decode($conf[1], true);
                                $status = $obj['status'];

                                if ($status != 'fail') {
                                    echo "Success";
                                } else {
                                    echo 'Fail';
                                }
                            }
                        }
                    } else {
                        echo "Status isn't okay";
                    }
                }
            }
        }
    }
}

function SendRequest($url, $post, $post_data, $user_agent, $cookies) {
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, 'https://instagram.com/api/v1/' . $url);
    curl_setopt($ch, CURLOPT_USERAGENT, $user_agent);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);

    if ($post) {
        curl_setopt($ch, CURLOPT_POST, true);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
    }

    if ($cookies) {
        curl_setopt($ch, CURLOPT_COOKIEFILE, 'cookies.txt');
    } else {
        curl_setopt($ch, CURLOPT_COOKIEJAR, 'cookies.txt');
    }

    $response = curl_exec($ch);
    $http = curl_getinfo($ch, CURLINFO_HTTP_CODE);
    curl_close($ch);

    return array($http, $response);
}

function GenerateGuid() {
    return sprintf('%04x%04x-%04x-%04x-%04x-%04x%04x%04x', mt_rand(0, 65535), mt_rand(0, 65535), mt_rand(0, 65535), mt_rand(16384, 20479), mt_rand(32768, 49151), mt_rand(0, 65535), mt_rand(0, 65535), mt_rand(0, 65535));
}

function GenerateUserAgent() {
    $resolutions = array('720x1280', '320x480', '480x800', '1024x768', '1280x720', '768x1024', '480x320');
    $versions = array('GT-N7000', 'SM-N9000', 'GT-I9220', 'GT-I9100');
    $dpis = array('120', '160', '320', '240');

    $ver = $versions[array_rand($versions)];
    $dpi = $dpis[array_rand($dpis)];
    $res = $resolutions[array_rand($resolutions)];

    return 'Instagram 4.' . mt_rand(1, 2) . '.' . mt_rand(0, 2) . ' Android (' . mt_rand(10, 11) . '/' . mt_rand(1, 3) . '.' . mt_rand(3, 5) . '.' . mt_rand(0, 5) . '; ' . $dpi . '; ' . $res . '; samsung; ' . $ver . '; ' . $ver . '; smdkc210; en_US)';
}

function GenerateSignature($data) {
    return hash_hmac('sha256', $data, 'b4a23f5e39b5929e0666ac5de94c89d1618a2916');
}

function GetPostData($filename) {
    if (!$filename) {
        echo "The image doesn't exist " . $filename;
    } else {
        $post_data = array('device_timestamp' => time(),
            'photo' => '@' . $filename);
        return $post_data;
    }
}
?>