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File size: 2,221 Bytes
49412e8 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 | import sys
import argparse
from pypdf import PdfReader, PdfWriter
def main():
parser = argparse.ArgumentParser(description="PDF Security Script")
parser.add_argument("action", choices=["unlock", "protect"], help="Action to perform")
parser.add_argument("input", help="Path to input PDF")
parser.add_argument("output", help="Path to output PDF")
parser.add_argument("--password", help="Password for decryption/encryption", default="")
args = parser.parse_args()
try:
reader = PdfReader(args.input)
writer = PdfWriter()
if args.action == "unlock":
if reader.is_encrypted:
# Try empty string first (for Owner locked files)
decrypted = False
try:
if reader.decrypt(""):
decrypted = True
except Exception:
pass
# If explicitly provided password
if not decrypted and args.password:
try:
if reader.decrypt(args.password):
decrypted = True
except Exception:
pass
if not decrypted:
print("ERROR: Invalid password or unsupported encryption")
sys.exit(1)
# Copy all pages
for page in reader.pages:
writer.add_page(page)
# Write unencrypted output
with open(args.output, "wb") as f:
writer.write(f)
print("SUCCESS")
elif args.action == "protect":
# Copy all pages
for page in reader.pages:
writer.add_page(page)
# Encrypt output
if args.password:
writer.encrypt(args.password)
else:
print("ERROR: Password empty for protection")
sys.exit(1)
with open(args.output, "wb") as f:
writer.write(f)
print("SUCCESS")
except Exception as e:
print(f"ERROR: {str(e)}")
sys.exit(1)
if __name__ == "__main__":
main()
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