From: misomosi <misomosispi@gmail.com>
Date: Mon, 3 Aug 2026 20:12:45 +0000 (-0400)
Subject: Fix bugs in arg parsing, file gen
X-Git-Url: http://git.misomosispi.com/?a=commitdiff_plain;h=2148fbf19ea58be7467638314d85056ce7cb2094;p=gists.git

Fix bugs in arg parsing, file gen
---

diff --git a/MSR605X/mxser.py b/MSR605X/mxser.py
index d0cba95..1cdd1be 100644
--- a/MSR605X/mxser.py
+++ b/MSR605X/mxser.py
@@ -10,67 +10,81 @@ def main(argv):
     parser.add_argument('-n', '--name', default='', help='Name of card holder')
     parser.add_argument('-e', '--expires', default='9912', help='Date of expiration on card (Format: YYMM)')
     parser.add_argument('-s', '--service', default='121', help='Service code of card (TODO: help for service code)')
-    parser.add_argument('-p', '--pan', default='', help='Primary account number of card (CAUTION: COMMAND LINE SAVED IN SHELL HISTORIES)')
+    parser.add_argument('-p', '--pan', help='Primary account number of card (CAUTION: COMMAND LINE SAVED IN SHELL HISTORIES)')
     parser.add_argument('-f', '--force', action=argparse.BooleanOptionalAction, default=False, help='Force file write even if exists')
     parser.add_argument('-a', '--append', action=argparse.BooleanOptionalAction, default=False, help='Append to the file instead of overwriting it')
     parser.add_argument('FILE')
     args = parser.parse_args(args=argv[1:])
 
+    EXIT_FLAG_FILE = 2
+    EXIT_FLAG_NAME = 4
+    EXIT_FLAG_SVC = 8
+    EXIT_FLAG_EXP = 16
+    EXIT_FLAG_PAN = 32
     exitcode = 0
-    NAME = args.name
-    if len(NAME) != 0 and not NAME.isalnum():
-        print(f'Name ({NAME}) is not alphanumeric!')
-        exitcode |= 2
+
+    FILE = args.FILE
+    if not args.force and not args.append and os.path.exists(args.FILE):
+        print(f'File ({FILE}) exists (use -a to append or -f to overwrite)')
+        exitcode |= EXIT_FLAG_FILE
+
+    NAME = args.name.upper()
+    if len(NAME) != 0 and not NAME.translate(str.maketrans(dict.fromkeys(" .'-,/\\", 'A'))).isalnum():
+        print(f'Name ({NAME}) is not a valid track 1 name!')
+        exitcode |= EXIT_FLAG_NAME
     if len(NAME) > 26:
         print(f'Name ({NAME}) is longer than 26 characters!')
-        exitcode |= 2
+        exitcode |= EXIT_FLAG_NAME
+    NAME += (' ' * (26 - len(NAME)))
 
     SVC = args.service
     if len(SVC) != 0 and not SVC.isdigit():
-        print(f'Service code ({SVC}) is not numeric, not 3 characters, or is not a known service code!')
-        exitcode |= 4
+        print(f'Service code ({SVC}) is not numeric!')
+        exitcode |= EXIT_FLAG_SVC
     if len(SVC) != 3:
-        print(f'Service code ({SVC}) is not 3 characters, or is not a known service code!')
-        exitcode |= 4
+        print(f'Service code ({SVC}) is not 3 characters!')
+        exitcode |= EXIT_FLAG_SVC
     if SVC[0] not in '125679' or SVC[1] not in '024' or SVC[2] not in '01234567':
         print(f'Service code ({SVC}) is not a known service code!')
-        exitcode |= 4
+        exitcode |= EXIT_FLAG_SVC
 
     EXP = args.expires
     if len(EXP) != 0 and not EXP.isdigit():
-        print(f'Expiration date ({EXP}) is not numeric, not 4 characters, not a valid date, or is already expired!')
-        exitcode |= 8
+        print(f'Expiration date ({EXP}) is not numeric!')
+        exitcode |= EXIT_FLAG_EXP
     if len(EXP) != 4:
         print(f'Expiration date ({EXP}) is not 4 characters')
-        exitcode |= 8
+        exitcode |= EXIT_FLAG_EXP
     if not (1 <= int(EXP[2:4]) <= 12):
-        print(f'Expiration date ({EXP}) is not a valid date, or is already expired!')
-        exitcode |= 8
-
-    TODAY = datetime.datetime.now()
-    if datetime.datetime(2000 + int(EXP[0:2]), int(EXP[2:4]), 1) <= TODAY:
-        print(f'Expiration date ({EXP}) is not a valid date, or is already expired!')
-        exitcode |= 8
+        print(f'Expiration date ({EXP}) is not a valid date')
+        exitcode |= EXIT_FLAG_EXP
+    else:
+        TODAY = datetime.datetime.now()
+        if datetime.datetime(2000 + int(EXP[0:2]), int(EXP[2:4]), 1) <= TODAY:
+            print(f'Expiration date ({EXP}) is already expired!')
+            exitcode |= EXIT_FLAG_EXP
 
     PAN = args.pan
-    if not PAN and exitcode == 0:
-        PAN = getpass.getpass("Enter PAN here: ")
-    if not PAN.isdigit() or len(PAN) >= 20:
-        print(f'Primary account number is not numeric or is longer than 19 characters!')
-        exitcode |= 16
-
-    FILE = args.FILE
-    if not args.force and not args.append and os.path.exists(args.FILE):
-        print(f'File ({FILE}) exists (use -a to append or -f to overwrite)')
-        exitcode |= 32
+    if PAN is None:
+        PAN = ''
+        if exitcode == 0:
+            PAN = getpass.getpass("Enter PAN: ")
+            if len(PAN) == 0:
+                print('WARNING: Entered empty primary account number!')
+    if len(PAN) != 0 and not PAN.isdigit():
+        print(f'Primary account number is not numeric!')
+        exitcode |= EXIT_FLAG_PAN
+    if len(PAN) >= 20:
+        print(f'Primary account number is longer than 19 characters!')
+        exitcode |= EXIT_FLAG_PAN
 
     if exitcode != 0:
         return exitcode
 
     # Write file and add a couple of newlines normally emitted by the
     # MSR605X reader/writer program when reading magstripe cards
-    T1 = f'%B{PAN}^{NAME}^{EXP}{SVC}^^^?'
-    T2 = f';{PAN}={EXP}{SVC}===?'
+    T1 = f'%B{PAN}^{NAME}^{EXP}{SVC}?'
+    T2 = f';{PAN}={EXP}{SVC}?'
     T3 = '+?'
     with open(FILE, 'a' if args.append else 'w') as fp:
         datestr = TODAY.strftime('%Y.%m.%d    %H:%M:%S')