From c80bc0ae2f08262c1c62a23e319f54481c00278e Mon Sep 17 00:00:00 2001
From: Craig D'Amelio <craig.damelio@gmail.com>
Date: Thu, 18 Dec 2014 10:29:44 -0500
Subject: [PATCH 1/2] Update snapchat_agent.php

separate isMedia into isImage and isVideo functions which can be used independently to identify if the media is an image or a video. The isMedia function relies on the individual functions and allows a consumer of this class to use these headers which are much more accurate than the media_type attribute which I have (anecdotally) found to be unreliable.
---
 src/snapchat_agent.php | 36 +++++++++++++++++++++++++++---------
 1 file changed, 27 insertions(+), 9 deletions(-)

diff --git a/src/snapchat_agent.php b/src/snapchat_agent.php
index 1dc22a9..1ddfe8c 100644
--- a/src/snapchat_agent.php
+++ b/src/snapchat_agent.php
@@ -176,17 +176,35 @@ public function hash($first, $second) {
 	 *   TRUE if the blob looks like a media file, FALSE otherwise.
 	 */
 	function isMedia($data) {
+		return isImage($data) || isVideo($data);
+	}
+	
+	/**
+	 * Checks to see if a blob looks like an image file.
+	 * 
+	 * @param data $data
+	 *   The blob data (or just the header).
+	 * 
+	 * @return bool
+	 *   TRUE if the blob looks like an image (jpeg), FALSE otherwise.
+	 */
+	function isImage($data) {
 		// Check for a JPG header.
-		if ($data[0] == chr(0xFF) && $data[1] == chr(0xD8)) {
-			return TRUE;
-		}
-
+		return ($data[0] == chr(0xFF) && $data[1] == chr(0xD8))
+	}
+	
+	/**
+	 * Checks to see if a blob looks like a video file.
+	 * 
+	 * @param data $data
+	 *   The blob data (or just the header).
+	 * 
+	 * @return bool
+	 *   TRUE if the blob looks like an video (mp4), FALSE otherwise.
+	 */
+	function isVideo($data) {
 		// Check for a MP4 header.
-		if ($data[0] == chr(0x00) && $data[1] == chr(0x00)) {
-			return TRUE;
-		}
-
-		return FALSE;
+		return ($data[0] == chr(0x00) && $data[1] == chr(0x00));
 	}
 
 	/**

From 00fc2562dcf6c475336ee580eccf86a850a5ec03 Mon Sep 17 00:00:00 2001
From: Craig D'Amelio <craig.damelio@gmail.com>
Date: Thu, 18 Dec 2014 12:11:29 -0500
Subject: [PATCH 2/2] Update snapchat_agent.php

terrible syntax error, dropped a semicolon
---
 src/snapchat_agent.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/snapchat_agent.php b/src/snapchat_agent.php
index 1ddfe8c..a9e66c9 100644
--- a/src/snapchat_agent.php
+++ b/src/snapchat_agent.php
@@ -190,7 +190,7 @@ function isMedia($data) {
 	 */
 	function isImage($data) {
 		// Check for a JPG header.
-		return ($data[0] == chr(0xFF) && $data[1] == chr(0xD8))
+		return ($data[0] == chr(0xFF) && $data[1] == chr(0xD8));
 	}
 	
 	/**