From dbcadbfe08e7dbdb5380352797803fecd5ef044e Mon Sep 17 00:00:00 2001
From: warcode <warcode@deny.io>
Date: Tue, 1 Sep 2015 09:40:23 +0200
Subject: [PATCH 1/2] Create sharedsecret.coffee

---
 .../sharedsecret.coffee                       | 82 +++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 packages/rocketchat-sharedsecret/sharedsecret.coffee

diff --git a/packages/rocketchat-sharedsecret/sharedsecret.coffee b/packages/rocketchat-sharedsecret/sharedsecret.coffee
new file mode 100644
index 000000000000..19b72c746ad3
--- /dev/null
+++ b/packages/rocketchat-sharedsecret/sharedsecret.coffee
@@ -0,0 +1,82 @@
+SharedSecret = []
+
+if (Meteor.isServer)
+	class EncryptMessage
+		constructor: (message) ->
+			currentUser = Meteor.user()._id
+			currentRoomId = message.rid
+
+			if(SharedSecret? && SharedSecret[currentUser]? && SharedSecret[currentUser][currentRoomId]?)
+				currentSecret = SharedSecret[currentUser][currentRoomId]
+				encrypted = CryptoJS.AES.encrypt(message.msg, currentSecret)
+				message.msg = encrypted.toString()
+
+				#urls
+				if(message.urls)
+					for urls in message.urls
+						urls.url = CryptoJS.AES.encrypt(urls.url, currentSecret).toString()
+
+				message.encrypted = true
+
+			return message
+
+	class HandleSlashCommand
+		constructor: (command, params, item) ->
+			if(command == "setsecretkey")
+				currentUser = Meteor.user()._id
+				currentRoomId = item.rid
+				secret = params
+
+				if(secret == "off")
+					secret = null
+
+				if(SharedSecret[currentUser]?)
+					SharedSecret[currentUser][currentRoomId] = secret
+				else
+					SharedSecret[currentUser] = []
+					SharedSecret[currentUser][currentRoomId] = secret
+
+	RocketChat.callbacks.add 'beforeSaveMessage', EncryptMessage, 9999 #LAST
+	RocketChat.slashCommands.add 'setsecretkey', HandleSlashCommand
+
+if (Meteor.isClient)
+	class DecryptMessage
+		constructor: (message) ->
+			if(message.encrypted)
+				currentRoomId = message.rid
+				currentSecret = localStorage.getItem("rocket.chat.sharedSecretKey.#{currentRoomId}")
+
+				if(currentSecret?)
+					decrypted = CryptoJS.AES.decrypt(message.msg, currentSecret).toString(CryptoJS.enc.Utf8)
+
+					if(decrypted == "")
+						message.msg = "~ encrypted message ~"
+						message.html = "~ encrypted message ~"
+					else
+						lockImage = "/images/lock8.png"
+						message.msg = "<img src=#{lockImage} style='width:8px;height:9px;'></img> " + decrypted
+						message.html = "<img src=#{lockImage} style='width:8px;height:9px;'></img> " + decrypted
+
+					#urls
+					if(message.urls)
+						for urls in message.urls
+							urls.url = CryptoJS.AES.decrypt(urls.url, currentSecret).toString(CryptoJS.enc.Utf8)
+				else
+					message.msg = "~ encrypted message ~"
+					message.html = "~ encrypted message ~"
+
+			return message
+
+	class HandleSlashCommand
+		constructor: (command, params, item) ->
+			if(command == "setsecretkey")
+				secret = params
+				if(secret == "off")
+					secret = null
+				currentRoomId = item.rid
+				localStorage.setItem("rocket.chat.sharedSecretKey.#{currentRoomId}", secret)
+
+
+
+	RocketChat.callbacks.add 'renderMessage', DecryptMessage, -9999 #FIRST
+	RocketChat.slashCommands.add 'setsecretkey', HandleSlashCommand

From 98748e9d67a0068e9084de86f6f666520853fd3e Mon Sep 17 00:00:00 2001
From: warcode <warcode@deny.io>
Date: Tue, 1 Sep 2015 09:41:14 +0200
Subject: [PATCH 2/2] Create package.js

---
 packages/rocketchat-sharedsecret/package.js | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 packages/rocketchat-sharedsecret/package.js

diff --git a/packages/rocketchat-sharedsecret/package.js b/packages/rocketchat-sharedsecret/package.js
new file mode 100644
index 000000000000..4371ff0846a0
--- /dev/null
+++ b/packages/rocketchat-sharedsecret/package.js
@@ -0,0 +1,21 @@
+Package.describe({
+	name: 'rocketchat:sharedsecret',
+	version: '0.0.1',
+	summary: 'RocketChat libraries',
+	git: ''
+});
+
+Package.onUse(function(api) {
+	api.versionsFrom('1.0');
+
+	api.use([
+		'coffeescript',
+		'rocketchat:lib@0.0.1'
+	]);
+
+	api.use(['jparker:crypto-aes'], ['server','client']);
+
+	api.addFiles('sharedsecret.coffee', ['server','client']);
+});
+
+Package.onTest(function(api) {});