diff --git a/msr90.py b/msr90.py
@@ -6,6 +6,13 @@ import re
import sys
+# Define ANSI color codes
+YELLOW = '\033[93m'
+CYAN = '\033[96m'
+GRAY = '\033[90m'
+RESET = '\033[0m'
+
+
def format_pan(pan: str) -> str:
'''
Format the Primary Account Number (PAN) by grouping the digits in sets of 4
@@ -18,14 +25,15 @@ def format_pan(pan: str) -> str:
def format_exp_date(exp_date: str) -> str:
'''
- Format the expiration date by to be MM/YY
+ Format the expiration date to be MM/YY
- :param exp_date: The expiration date to format'''
+ :param exp_date: The expiration date to format
+ '''
return exp_date[2:4] + '/' + exp_date[0:2]
-def service_code_descriptions(digit, code):
+def service_code_descriptions(digit: int, code: str) -> str:
'''
Get the description for the service code digit
@@ -69,96 +77,57 @@ def parse_magnetic_stripe(data: str):
:param data: The raw magnetic stripe data to parse
'''
- # Patterns for specific track data parsing
- track1_pattern = r'^%([AB])(\d{1,19})\^([^\^]{2,26})\^(\d{4})(\d{3})([^\?]*?)\?(\w?)'
- track2_pattern = r';(\d{1,19})=(\d{4})(\d{3})(.*?)\?$'
-
- # Generic patterns to capture raw data if specific parsing fails
- generic_track1_pattern = r'(%[AB][^\?]+\?)'
- generic_track2_pattern = r'(;[^\?]+\?)'
- generic_track3_pattern = r'(\+[^\?]+\?)'
-
- # Attempt to match the track data
- track1_match = re.search(track1_pattern, data)
- track2_match = re.search(track2_pattern, data)
- track3_match = re.search(generic_track3_pattern, data)
+ track1_match = re.search(r'^%([AB])(\d{1,19})\^([^\^]{2,26})\^(\d{4})(\d{3})([^\?]*?)\?(\w?)', data)
+ track2_match = re.search(r';(\d{1,19})=(\d{4})(\d{3})(.*?)\?$', data)
+ track3_match = re.search(r'(\+[^\?]+\?)', data)
- # Track 1 specific parsing
if track1_match:
format_code, pan, name, exp_date, service_code, discretionary_data, lrc = track1_match.groups()
if format_code == 'A':
- print('Error: Unsupported format code \'A\'. Exiting.')
- sys.exit(1)
+ raise ValueError('Track 1 data is using format code A which is not supported')
formatted_pan = format_pan(pan)
formatted_exp_date = format_exp_date(exp_date)
desc1 = service_code_descriptions(1, service_code[0])
desc2 = service_code_descriptions(2, service_code[1])
desc3 = service_code_descriptions(3, service_code[2])
- print_fields('Track 1 Data', [
- ('Format Code', f'{format_code} - Financial cards (ISO/IEC 7813)'),
- ('Primary Account Number (PAN)', formatted_pan),
- ('Cardholder Name', name),
- ('Expiration Date', formatted_exp_date),
- ('Service Code Digit 1', f'{service_code[0]}: {desc1}'),
- ('Service Code Digit 2', f'{service_code[1]}: {desc2}'),
- ('Service Code Digit 3', f'{service_code[2]}: {desc3}'),
- ('Discretionary Data', discretionary_data),
- ('LRC (optional)', lrc),
- ('Raw Track Data', track1_match.group(0))
- ], '\033[93m')
-
- # Fallback generic track 1
- elif re.search(generic_track1_pattern, data):
print('Track 1 Data:')
- print('Raw: ' + re.search(generic_track1_pattern, data).group(1))
-
- print('\n')
+ print(YELLOW + 'Format Code' + GRAY + ' | ' + RESET + f'{format_code} - Financial cards (ISO/IEC 7813)')
+ print(YELLOW + 'Primary Account Number (PAN)' + GRAY + ' | ' + RESET + formatted_pan)
+ print(YELLOW + 'Cardholder Name' + GRAY + ' | ' + RESET + name)
+ print(YELLOW + 'Expiration Date' + GRAY + ' | ' + RESET + formatted_exp_date)
+ print(YELLOW + 'Service Code Digit 1' + GRAY + ' | ' + RESET + f'{service_code[0]}: {desc1}')
+ print(YELLOW + 'Service Code Digit 2' + GRAY + ' | ' + RESET + f'{service_code[1]}: {desc2}')
+ print(YELLOW + 'Service Code Digit 3' + GRAY + ' | ' + RESET + f'{service_code[2]}: {desc3}')
+ print(YELLOW + 'Discretionary Data' + GRAY + ' | ' + RESET + discretionary_data)
+ print(YELLOW + 'LRC (optional)' + GRAY + ' | ' + RESET + lrc)
+ print(YELLOW + 'Raw Track Data' + GRAY + ' | ' + RESET + track1_match.group(0))
+ else:
+ generic_track1 = re.search(r'(%[AB][^\?]+\?)', data)
+ print('Track 1 Data:')
+ print('Raw | ' + (generic_track1.group(1) if generic_track1 else 'No data found'))
- # Track 2 specific parsing
if track2_match:
pan, exp_date, service_code, discretionary_data = track2_match.groups()
formatted_pan = format_pan(pan)
formatted_exp_date = format_exp_date(exp_date)
- print_fields('Track 2 Data', [
- ('Primary Account Number (PAN)', formatted_pan),
- ('Expiration Date', formatted_exp_date),
- ('Service Code', service_code),
- ('Discretionary Data', discretionary_data),
- ('Raw Track Data', track2_match.group(0))
- ], '\033[96m')
-
- # Fallback generic track 2
- elif re.search(generic_track2_pattern, data):
print('Track 2 Data:')
- print('Raw: ' + re.search(generic_track2_pattern, data).group(1))
-
- print('\n')
+ print(CYAN + 'Primary Account Number (PAN)' + GRAY + ' | ' + RESET + formatted_pan)
+ print(CYAN + 'Expiration Date' + GRAY + ' | ' + RESET + formatted_exp_date)
+ print(CYAN + 'Service Code' + GRAY + ' | ' + RESET + service_code)
+ print(CYAN + 'Discretionary Data' + GRAY + ' | ' + RESET + discretionary_data)
+ print(CYAN + 'Raw Track Data' + GRAY + ' | ' + RESET + track2_match.group(0))
+ else:
+ generic_track2 = re.search(r'(;[^\?]+\?)', data)
+ print('Track 2 Data:')
+ print('Raw | ' + (generic_track2.group(1) if generic_track2 else 'No data found'))
- # Track 3 generic data if found
if track3_match:
print('Track 3 Data:')
- print('Raw: ' + track3_match.group(1))
+ print(f'Raw | {track3_match.group(1)}')
else:
print('Track 3 Data: No data found.')
-def print_fields(title: str, fields: list, color_code: str):
- '''
- Print the fields in a formatted table
-
- :param title: The title of the table
- :param fields: The fields to print
- :param color_code: The color code to use for the table
- '''
-
- max_len = max(len(name) for name, _ in fields)
-
- print(title)
-
- for name, value in fields:
- print(color_code + name.ljust(max_len) + '\033[90m | \033[0m' + value)
-
-
if __name__ == '__main__':
try:
|
