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=begin
This file is part of softSIM.
softSIM is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
softSIM is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with sofSIM. If not, see <http://www.gnu.org/licenses/>.
Copyright (C) 2011 Kevin "tsaitgaist" Redon kevredon@mail.tsaitgaist.info
=end
# this class copies all files from the SIM to an xml file
require 'sap/client'
require 'lib/apdu'
require 'xml'
class Copy
include APDU
# to show the exact file being processed
VERBOSE = false
# show file discovery progress
PROGRESS = true
# create a Copy class
# io : I/O to the SAP server
def initialize(io)
@client = Client.new(io)
@client.start
@client.connect
end
# tell APDU methods how to send
def transmit_apdu(apdu)
return @client.apdu(apdu)
end
# copy the content to a file
def copy(file="sim.xml")
@sim = XML::Node.new("sim")
# get the ATR
@sim["atr"] = @client.atr.to_hex
# verify CHV1
while chv_enabled? do
print "enter PIN : "
STDOUT.flush
pin = gets.chomp
# pin is between 4 and 8 digits
unless pin.length>=4 and pin.length<=8 and pin.gsub(/\d/,"").length==0 then
puts "PIN has 4 to 8 digits"
redo
end
# encode pin in T.50 on 8 bytes
chv = [0xFF]*8
pin.length.times do |i|
chv[i]=0x30+pin[i,1].to_i
end
# select DF_GSM
cd [MF,DF_GSM]
# verify CHV1
begin
transmit(CHV1+chv)
@sim["CHV1"]=pin
break
rescue
puts "PIN wrong"
end
end
# get MF
puts "reading SIM files"
mf = explore([MF])
@sim << mf
puts "" if PROGRESS and !VERBOSE
puts "found #{@nb_directories} directories and #{@nb_files} files"
# get some tuples (run A38 algo)
puts "getting some A38 tuples"
a38_node = XML::Node.new("a38")
# the rands
rands = []
16.times do |i|
rands << [(i<<4)+i]*16
end
# the results
rands.each do |r|
response = a38(r)
tuple_node = XML::Node.new("tuple")
tuple_node["rand"]=r.to_hex
tuple_node["sres"]=response[0,4].to_hex
tuple_node["kc"]=response[4..-1].to_hex
a38_node << tuple_node
end
@sim << a38_node
# write xml in file
puts "saving SIM files in #{file}"
xml = XML::Document.new
xml.root = @sim
xml.save(file)
end
# return the file
# - id : file ID
# return {:id,:type,:name,:structure,:header,:body}, or nil if file does not exist
def file(id)
# the data to return
to_return = {}
# select file
begin
response = select(id)
rescue Exception => e
if e.to_s.include? "file ID not found/pattern not found" then
return nil
else
raise e
end
end
to_return[:header] = response
# file id
to_return[:id] = [response[4],response[5]]
to_return[:name]=FILE_ID[(to_return[:id][0]<<8)+to_return[:id][1]]
# file type
type = case response[6]
when 0
"RFU"
when 1
"MF"
when 2
"DF"
when 4
"EF"
else
"unknown"
end
to_return[:type] = type
# read EF
if response[6]==0x04 then
# structure
structure = case response[13]
when 0
"transparent"
when 1
"linear fixed"
when 3
"cyclic"
else
"unknown"
end
to_return[:structure] = structure
# do I have the right to read ?
nibble = (response[8]>>4)&0x0f
read_right = (nibble==0 or nibble==1)
if read_right then
size = (response[2]<<8)+response[3]
# read ef (depending on the type of file)
if response[13]==0x00 then # transparent file (TS 51.011 9.3)
response = transmit(READ_BINARY+[0x00,0x00]+[size&0xFF])[0]
to_return[:body] = response
if size>0xFF then
response = transmit(READ_BINARY+[0x01, 0x00]+[(size>>8)&0xFF])[0]
to_return[:body] += response
end
else # linear fixed or cyclic
record_size = response[14]
to_return[:body] = []
# read all records
(1..size/record_size).each do |i|
response = transmit(READ_RECORD+[i,0x04,record_size])[0]
to_return[:body] << response
end
end
end
end
return to_return
end
# returns a node from the file data
def file2node(data)
node = XML::Node.new("file")
node["id"]=data[:id].to_hex
node["name"]=data[:name] if data[:name]
node["type"]=data[:type]
node << XML::Node.new("header",data[:header].to_hex)
if data[:type]=="EF" then
node["structure"]=data[:structure]
if data[:body] then# if I can read the body
if data[:structure]=="transparent" then
node << XML::Node.new("body",data[:body].to_hex)
else # linear fixed or cyclic
body_node = XML::Node.new("body")
data[:body].each do |record|
body_node << XML::Node.new("record",record.to_hex)
end
node << body_node
end
end
end
return node
end
# get all the files in the current directory
# does a recursive call
# files are saved in the xml file
# path is an arry of MF/DF
# return xml node representing the folder and content
def explore(path)
puts "exploring #{path.flatten.to_hex_disp}" if VERBOSE
# go to parent folder
cd path[0..-2]
# get info and select folder
data = file(path[-1])
return nil unless data
node = file2node(data)
# read all EF
ef_id = EF_LEVELS[path.length]
if ef_id then
0x100.times do |i|
id = [ef_id,i]
begin
data=file(id)
next unless data # if file does not exist
if VERBOSE then
puts "found EF #{id.to_hex_disp}"
elsif PROGRESS
print "."
STDOUT.flush
end
ef_node = file2node(data)
node << ef_node
@nb_files = 0 unless @nb_files
@nb_files += 1
rescue Exception => e
puts "file error : #{e.to_s}"
select_decode(select(id))
end
end
end
# read all DF
df_id = DF_LEVELS[path.length]
if df_id then
# read all DF
0x100.times do |i|
id = [df_id,i]
df_node = explore(path+[id])
next unless df_node
if VERBOSE then
puts "found DF #{id.to_hex_disp}"
elsif PROGRESS
print ","
STDOUT.flush
end
node << df_node
@nb_directories = 0 unless @nb_directories
@nb_directories += 1
end
end
return node
end
# close the copy
def close
@client.disconnect
end
end
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