From: martin.holst@gmail.com <martin.holst@gmail.com@ef4ab9da-24cd-11de-8aaa-f3a34680c41f>
Date: Thu, 3 Oct 2013 13:56:11 +0000 (+0000)
Subject: Added a utility script to convert a 'dumpdata.bin'-file into the 'eml'-format that... 
X-Git-Tag: v1.0.0~64
X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/commitdiff_plain/c9e2f7807e014e7679ddd7af2e984aea537a11b9

Added a utility script to convert a 'dumpdata.bin'-file into the 'eml'-format that the emulator uses. Did not find any built-in way to do this, perhaps such functionality already exists.. ?
---

diff --git a/client/scripts/dumptoemul.lua b/client/scripts/dumptoemul.lua
new file mode 100644
index 00000000..26e69fcc
--- /dev/null
+++ b/client/scripts/dumptoemul.lua
@@ -0,0 +1,121 @@
+-- The getopt-functionality is loaded from pm3/getopt.lua
+-- Have a look there for further details
+getopt = require('getopt')
+bin = require('bin')
+
+example = "script run 14araw -x 6000F57b"
+author = "Martin Holst Swende"
+usage = "script run htmldump [-f <file>]"
+desc =[[
+This script takes a dumpfile from 'hf mf dump' and converts it to a format that can be used
+by the emulator
+
+Arguments:
+	-h 				This help
+	-i <file>		Specifies the dump-file (input). If omitted, 'dumpdata.bin' is used	
+	-o <filename>	Speciies the output file. If omitted, <uid>.eml is used. 	
+
+]]
+
+-------------------------------
+-- 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
+
+local function convert_to_ascii(hexdata)
+	if string.len(hexdata) % 32 ~= 0 then 
+		return oops(("Bad data, length should be a multiple of 32 (was %d)"):format(string.len(hexdata)))
+	end
+
+	local js,i = "[";
+	for i = 1, string.len(hexdata),32 do
+		js = js .."'" ..string.sub(hexdata,i,i+31).."',\n"
+	end
+	js = js .. "]"
+	return js
+end
+
+local function readdump(infile)
+	 t = infile:read("*all")
+	 --print(string.len(t))
+	 len = string.len(t)
+	 local len,hex = bin.unpack(("H%d"):format(len),t)
+	 --print(len,hex)
+	 return hex
+end
+
+local function convert_to_emulform(hexdata)
+	if string.len(hexdata) % 32 ~= 0 then 
+		return oops(("Bad data, length should be a multiple of 32 (was %d)"):format(string.len(hexdata)))
+	end
+	local ascii,i = "";
+	for i = 1, string.len(hexdata),32 do
+		ascii = ascii  ..string.sub(hexdata,i,i+31).."\n"
+	end
+	return ascii
+end
+
+local function main(args)
+
+	local input = "dumpdata.bin"
+	local output
+
+	for o, a in getopt.getopt(args, 'i:o:h') do
+		if o == "h" then return help() end		
+		if o == "i" then input = a end
+		if o == "o" then output = a end
+	end
+	-- Validate the parameters
+	
+	local infile = io.open(input, "r")
+	if infile == nil then 
+		return oops("Could not read file ", input)
+	end
+	local dumpdata = readdump(infile)
+	-- The hex-data is now in ascii-format,
+
+	-- But first, check the uid
+	local uid = string.sub(dumpdata,1,8)
+	output = output or (uid .. ".eml")
+
+	-- Format some linebreaks
+	dumpdata = convert_to_emulform(dumpdata)
+
+	local outfile = io.open(output, "w")
+	if outfile == nil then 
+		return oops("Could not write to file ", output)
+	end
+	
+	outfile:write(dumpdata:lower())
+	io.close(outfile)
+	print(("Wrote an emulator-dump to the file %s"):format(output))
+end
+
+
+--[[
+In the future, we may implement so that scripts are invoked directly 
+into a 'main' function, instead of being executed blindly. For future
+compatibility, I have done so, but I invoke my main from here.  
+--]]
+main(args)
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