From 660e9d996132099a88a0ffc3ae6851a0c6cf689e Mon Sep 17 00:00:00 2001
From: acidvegas <acid.vegas@acid.vegas>
Date: Sat, 11 May 2024 20:29:07 -0400
Subject: [PATCH] Initial commit

---
 LICENSE   | 15 +++++++++++
 README.md | 12 +++++++++
 msr90.py  | 76 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 103 insertions(+)
 create mode 100644 LICENSE
 create mode 100644 README.md
 create mode 100644 msr90.py

diff --git a/LICENSE b/LICENSE
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index 0000000..54ec6ab
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,15 @@
+ISC License
+
+Copyright (c) 2024, acidvegas <acid.vegas@acid.vegas>
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
diff --git a/README.md b/README.md
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+++ b/README.md
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+# MSR90
+> A journey into learning about magnetic strip data in modern day cards
+
+#### WORK IN PROGRESS
+**Hardware:** [Deftun MSR90 3 Track Reader](https://www.amazon.com/MSR90-Magnetic-Credit-Reader-Deftun/dp/B01DUB4GVO/)
+
+I will be documenting all my research on magnetic strip data aswell at writing code for it.
+For some reason it seems hard to find code  or any valid documentation on working with magnetic strip data on Linux, so this will attempt to be a deep dive into understanding the capabilities.
+
+___
+
+###### Mirrors for this repository: [acid.vegas](https://git.acid.vegas/msr90) • [SuperNETs](https://git.supernets.org/acidvegas/msr90) • [GitHub](https://github.com/acidvegas/msr90) • [GitLab](https://gitlab.com/acidvegas/msr90) • [Codeberg](https://codeberg.org/acidvegas/msr90)
\ No newline at end of file
diff --git a/msr90.py b/msr90.py
new file mode 100644
index 0000000..1c09c55
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+++ b/msr90.py
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+#!/usr/bin/env python
+# MSR90 Card Reader - Developed by acidvegas in Python (https://acid.vegas/msr90)
+
+import re
+
+# ANSI Escape Codes
+YELLOW = '\033[93m'
+RESET  = '\033[0m'
+
+# Numeric values for the service code
+service_code_values = {
+	'0': 'No restrictions and PIN required.',
+	'1': 'No restrictions.',
+	'2': 'Goods and services only (no cash).',
+	'3': 'ATM only and PIN required.',
+	'4': 'Cash only.',
+	'5': 'Goods and services only (no cash), PIN required.',
+	'6': 'No restrictions, use of PIN depends on issuers requirements.',
+	'7': 'Goods and services only, use of PIN depends on issuers requirements.'
+}
+
+# Description of the format code
+format_code_values = {
+	'A': 'Reserved for proprietary use of the card issuer.',
+	'B': 'Used by financial and credit card systems.'
+}
+
+def parse_magnetic_stripe(data: str):
+	'''
+	Parse the raw data from the magnetic stripe of a card.
+
+	:param data: Raw data from the magnetic stripe of a card.
+	'''
+
+	# Regex to match the track 1 and track 2 data
+	track1 = re.search(r'%([AB])(\d+)\^([^?^]+)\^(\d{4})(\d{3}).*?\?', data)
+	track2 = re.search(r';(\d+)=(\d{4})(\d{3}).*?\?', data)
+
+	# Check if the data is valid
+	if not track1 or not track2:
+		raise ValueError('Invalid data format')
+
+	# Parse the data from the track 1 and track 2
+	format_code    = track1.group(1)
+	account_number = track1.group(2)
+	name           = track1.group(3).strip()
+	expiry_date    = track1.group(4)
+	expiry_date    = f'{expiry_date[2:4]}/{expiry_date[0:2]}'
+	service_code   = track1.group(5)
+
+	service_code_description = [
+		f'{service_code[0]} - {service_code_values.get(service_code[0], 'Unknown')}',
+		f'{service_code[1]} - {service_code_values.get(service_code[1], 'Unknown')}',
+		f'{service_code[2]} - {service_code_values.get(service_code[2], 'Unknown')}'
+	]
+
+	format_code_description = format_code_values.get(format_code, 'Unknown')
+
+	# Print the parsed data
+	print(f'{YELLOW}Name            :{RESET} {name}')
+	print(f'{YELLOW}Account Number  :{RESET} {account_number}')
+	print(f'{YELLOW}Expiration Date :{RESET} {expiry_date}')
+	print(f'{YELLOW}Service Code    :{RESET} {service_code}')
+	for item in service_code_description:
+		print(' '*18 + item)
+	print(f'{YELLOW}Format Code     :{RESET} {format_code} ({format_code_description})')
+	print(f'{YELLOW}Track 1         :{RESET} {track1.group(0)}')
+	print(f'{YELLOW}Track 2         :{RESET} {track2.group(0)}')
+
+def main():
+	print('Please swipe the card...')
+	data = input()
+	parse_magnetic_stripe(data)
+
+if __name__ == '__main__':
+	main()