X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/b61f426c2d92962ae51a6d4dc01a846fc2d4c095..70c8077c99a2298f0f0ed05a7e1c42353a3b2d8e:/client/scripts/14araw.lua

diff --git a/client/scripts/14araw.lua b/client/scripts/14araw.lua
new file mode 100644
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--- /dev/null
+++ b/client/scripts/14araw.lua
@@ -0,0 +1,183 @@
+local cmds = require('commands')
+local getopt = require('getopt')
+local lib14a = require('read14a')
+
+example = "script run writerraw -x 6000F57b"
+author = "Martin Holst Swende"
+
+
+desc =
+[[
+This is a script to allow raw 1444a commands to be sent and received. 
+
+Arguments:
+	-o 				do not connect - use this only if you previously used -p to stay connected 
+	-r 				do not read response
+	-c 				calculate and append CRC
+	-p 				stay connected - dont inactivate the field
+	-x <payload> 	Data to send (NO SPACES!)
+	-d 				Debug flag
+
+Examples : 
+
+# 1. Connect and don't disconnect
+script run writeraw -p 
+# 2. Send mf auth, read response (nonce)
+script run writeraw -o -x 6000F57b -p
+# 3. disconnect
+script run writeraw -o
+
+# All three steps in one go:
+script run writeraw -x 6000F57b
+]]
+
+--[[
+
+This script communicates with 
+/armsrc/iso14443a.c, specifically ReaderIso14443a() at around line 1779 and onwards. 
+
+Check there for details about data format and how commands are interpreted on the 
+device-side.  
+]]
+
+-- Some globals
+local TIMEOUT = 2000 -- Shouldn't take longer than 2 seconds
+local DEBUG = false -- the debug flag
+
+-------------------------------
+-- Some utilities 
+-------------------------------
+
+--- 
+-- A debug printout-function
+function dbg(args)
+	if DEBUG then
+		print("# ", args)
+	end
+end 
+--- 
+-- This is only meant to be used when errors occur
+function oops(err)
+	print("ERROR: ",err)
+end
+
+
+--- 
+-- Usage help
+function help()
+	print(desc)
+	print("Example usage")
+	print(example)
+end
+
+--- 
+-- The main entry point
+function main(args)
+
+	if args == nil or #args == 0 then
+		return help()
+	end
+
+	local ignore_response = false
+	local appendcrc = false
+	local stayconnected = false
+	local payload = nil
+	local doconnect = true
+
+	-- Read the parameters
+	for o, a in getopt.getopt(args, 'corcpx:') do
+		if o == "o" then doconnect = false end		
+		if o == "r" then ignore_response = true end
+		if o == "c" then appendcrc = true end
+		if o == "p" then stayconnected = true end
+		if o == "x" then payload = a end
+		if o == "d" then DEBUG = true end
+	end
+
+	-- First of all, connect
+	if doconnect then
+		dbg("doconnect")
+		-- We reuse the connect functionality from a 
+		-- common library
+		info, err = lib14a.read1443a(true)
+
+		if err then return oops(err) end
+		print(("Connected to card, uid = %s"):format(info.uid))
+	end
+
+	-- The actual raw payload, if any
+	if payload then
+		res,err = sendRaw(payload,{ignore_response = ignore_response})
+		if err then return oops(err) end
+	
+		if not ignoreresponse then 
+			-- Display the returned data	
+			showdata(res)
+		end
+	end
+	-- And, perhaps disconnect?
+	if not stayconnected then 
+		disconnect()
+	end
+end
+
+--- Picks out and displays the data read from a tag
+-- Specifically, takes a usb packet, converts to a Command
+-- (as in commands.lua), takes the data-array and 
+-- reads the number of bytes specified in arg1 (arg0 in c-struct)
+-- and displays the data
+-- @param usbpacket the data received from the device
+function showdata(usbpacket)
+	local cmd_response = Command.parse(usbpacket)
+	local len = tonumber(cmd_response.arg1) *2
+	--print("data length:",len)
+	local data = string.sub(tostring(cmd_response.data), 0, len);
+	print("<< ",data)
+	--print("----------------")
+end
+
+
+
+function sendRaw(rawdata, options)
+	print(">> ", rawdata)
+	
+	local flags = lib14a.ISO14A_COMMAND.ISO14A_NO_DISCONNECT + lib14a.ISO14A_COMMAND.ISO14A_RAW
+
+	local command = Command:new{cmd = cmds.CMD_READER_ISO_14443a, 
+									arg1 = flags, -- Send raw 
+									-- arg2 contains the length, which is half the length 
+									-- of the ASCII-string rawdata
+									arg2 = string.len(rawdata)/2, 
+									data = rawdata}
+	return lib14a.sendToDevice(command, options.ignore_response) 
+end
+
+-- Sends an instruction to do nothing, only disconnect
+function disconnect()
+
+	local command = Command:new{cmd = cmds.CMD_READER_ISO_14443a, 
+									arg1 = 0, -- Nothing 
+									}
+	-- We can ignore the response here, no ACK is returned for this command
+	-- Check /armsrc/iso14443a.c, ReaderIso14443a() for details
+	return lib14a.sendToDevice(command,true) 
+end								
+
+
+-------------------------
+-- 	Testing
+-------------------------
+function selftest()
+	main("-p")
+	main(" -o -x 6000F57b -p")
+	main("-o")
+	main("-x 6000F57b")
+end
+-- Flip the switch here to perform a sanity check. 
+-- It read a nonce in two different ways, as specified in the usage-section
+if false then 
+	selftest()
+else 
+	-- Call the main 
+	main(args)
+end