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apdu refactory & sim_server.select

This commit is contained in:
Kevin Redon 2011-05-02 12:20:07 +02:00
parent 863a4a26e5
commit 5eeb316f9c
3 changed files with 97 additions and 100 deletions
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1
src/demo_client.rb
View File

@ -1,6 +1,7 @@
#!/usr/bin/env ruby
# This programm will create a client which can be used to test servers
require 'lib/client'
require 'lib/apdu'
#=================
#== client type ==

61
src/lib/apdu.rb Normal file
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@ -0,0 +1,61 @@
# transform binary string into readable hex string
class String
def to_hex_disp
to_return = ""
each_byte do |b|
to_return += b.to_s(16).rjust(2,"0")
to_return += " "
end
return to_return[0..-2].upcase
end
def to_hex
to_return = ""
each_byte do |b|
to_return += b.to_s(16).rjust(2,"0")
end
#to_return = "0x"+to_return
return to_return.downcase
end
# convert a hexadecimal string into binary array
def hex2arr
arr = []
(self.length/2).times do |i|
arr << self[i*2,2].to_i(16)
end
return arr
end
end
# reverse the nibbles of each byte
class Array
# print the nibbles (often BCD)
# - padding : the 0xf can be ignored (used as padding in BCD)
def nibble_str(padding=false)
# get nibble representation
to_return = collect { |b| (b&0x0F).to_s(16)+(b>>4).to_s(16) }
to_return = to_return.join
# remove the padding
to_return.gsub!('f',"") if padding
return to_return
end
def to_hex_disp
to_return = ""
each do |b|
to_return += b.to_s(16).rjust(2,"0")
to_return += " "
end
return to_return[0..-2].upcase
end
def to_hex
to_return = ""
each do |b|
to_return += b.to_s(16).rjust(2,"0")
end
#to_return = "0x"+to_return
return to_return.downcase
end
end

135
src/sim_server.rb
View File

@ -1,70 +1,9 @@
#!/usr/bin/env ruby
require 'server'
require 'lib/server'
require 'lib/apdu'
require 'socket'
require 'xml'
# transform binary string into readable hex string
class String
def to_hex_disp
to_return = ""
each_byte do |b|
to_return += b.to_s(16).rjust(2,"0")
to_return += " "
end
return to_return[0..-2].upcase
end
def to_hex
to_return = ""
each_byte do |b|
to_return += b.to_s(16).rjust(2,"0")
end
#to_return = "0x"+to_return
return to_return.downcase
end
# convert a hexadecimal string into binary array
def hex2arr
arr = []
(self.length/2).times do |i|
arr << self[i*2,2].to_i(16)
end
return arr
end
end
# reverse the nibbles of each byte
class Array
# print the nibbles (often BCD)
# - padding : the 0xf can be ignored (used as padding in BCD)
def nibble_str(padding=false)
# get nibble representation
to_return = collect { |b| (b&0x0F).to_s(16)+(b>>4).to_s(16) }
to_return = to_return.join
# remove the padding
to_return.gsub!('f',"") if padding
return to_return
end
def to_hex_disp
to_return = ""
each do |b|
to_return += b.to_s(16).rjust(2,"0")
to_return += " "
end
return to_return[0..-2].upcase
end
def to_hex
to_return = ""
each do |b|
to_return += b.to_s(16).rjust(2,"0")
end
#to_return = "0x"+to_return
return to_return.downcase
end
end
# SAP server using a SIM backup file
class SIMServer < Server
@ -93,7 +32,8 @@ class SIMServer < Server
end
# select MF
node = select([0x3f,0x00])
node = @card.find_first("/sim/file")
@selected = node
@response = node.find_first("./header").content.hex2arr
# card ready
@ -184,44 +124,39 @@ class SIMServer < Server
# nil is return if file does not exist or is unaccessible
def select (id)
response = nil
# get the current location
if @pwd then
# get current directory
dfs = [0x3f,0x5f,0x7f]
if dfs.include? @pwd["id"][0,2].to_i(16) then
current_directory = @pwd
else
current_directory = @pwd.find_first("..")
end
# find file
if result=current_directory.find_first("./file[@id='#{id.to_hex}']") then
# any file which is an immediate child of the current directory
response = result
elsif dfs.include? current_directory["id"][0,2].to_i(16) and result=current_directory.find_first("../file[@id='#{id.to_hex}']") then
# any DF which is an immediate child of the parent of the current DF
response = result
elsif result=current_directory.find_first("..") and result["id"]==id.to_hex then
# the parent of the current directory
response = result
elsif current_directory["id"]==id.to_hex then
# the current DF
response = current_directory
elsif id==[0x3f,0x00] then
# the MF
response = @card.find_first("/sim/file[@id='3f00']")
else
response = nil
end
@pwd = response if response
# get the current directory
dfs = [0x3f,0x5f,0x7f]
if dfs.include? @selected["id"][0,2].to_i(16) then
# selected of a DF
current_directory = @selected
else
# only MF is accessible
if id==[0x3f,0x00] then
@pwd = @card.find_first("/sim/file[@id='3f00']")
response = @pwd
else
response=nil
end
# selected is an ED, DF is parent
current_directory = @selected.find_first("..")
end
# find file
if result=current_directory.find_first("./file[@id='#{id.to_hex}']") then
# any file which is an immediate child of the current directory
response = result
elsif dfs.include? current_directory["id"][0,2].to_i(16) and result=current_directory.find_first("../file[@id='#{id.to_hex}']") then
# any DF which is an immediate child of the parent of the current DF
response = result
elsif result=current_directory.find_first("..") and result["id"]==id.to_hex then
# the parent of the current directory
response = result
elsif current_directory["id"]==id.to_hex then
# the current DF
response = current_directory
elsif id==[0x3f,0x00] then
# the MF
response = @card.find_first("/sim/file[@id='3f00']")
else
# file not found
response = nil
end
# remember new selected file
@selected = response if response
return response
end