Python/apps/py-cutils: shasum.py annotate

annotate shasum.py @ 51:58d5a0b6e5b3

Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal

author	Franz Glasner <f.glasner@feldmann-mg.com>
date	Wed, 26 Jan 2022 14:15:43 +0100
parents	5bec7a5d894a
children	5935055edea6

rev	line source
1 bbf4e0f5b651 Begin the shasum.py script Franz Glasner <fzglas.hg@dom66.de> parents: diff changeset	1 r"""
bbf4e0f5b651 Begin the shasum.py script Franz Glasner <fzglas.hg@dom66.de> parents: diff changeset	2 :Author: Franz Glasner
43 d856432a1cbb Extend copyright year to 2022 Franz Glasner <fzglas.hg@dom66.de> parents: 42 diff changeset	3 :Copyright: (c) 2020-2022 Franz Glasner.
1 bbf4e0f5b651 Begin the shasum.py script Franz Glasner <fzglas.hg@dom66.de> parents: diff changeset	4 All rights reserved.
bbf4e0f5b651 Begin the shasum.py script Franz Glasner <fzglas.hg@dom66.de> parents: diff changeset	5 :License: BSD 3-Clause "New" or "Revised" License.
bbf4e0f5b651 Begin the shasum.py script Franz Glasner <fzglas.hg@dom66.de> parents: diff changeset	6 See :ref:`LICENSE <license>` for details.
bbf4e0f5b651 Begin the shasum.py script Franz Glasner <fzglas.hg@dom66.de> parents: diff changeset	7 If you cannot find LICENSE see
bbf4e0f5b651 Begin the shasum.py script Franz Glasner <fzglas.hg@dom66.de> parents: diff changeset	8 <https://opensource.org/licenses/BSD-3-Clause>
26 ea4bb192c437 FIX: RCS keyword syntax Franz Glasner <fzglas.hg@dom66.de> parents: 23 diff changeset	9 :ID: @(#) $HGid$
1 bbf4e0f5b651 Begin the shasum.py script Franz Glasner <fzglas.hg@dom66.de> parents: diff changeset	10
bbf4e0f5b651 Begin the shasum.py script Franz Glasner <fzglas.hg@dom66.de> parents: diff changeset	11 """
bbf4e0f5b651 Begin the shasum.py script Franz Glasner <fzglas.hg@dom66.de> parents: diff changeset	12
2 5510a39a2d04 Basic hashing with proper binary stdin/stdout support for Py2, Py3 and Windows Franz Glasner <fzglas.hg@dom66.de> parents: 1 diff changeset	13 from __future__ import print_function
1 bbf4e0f5b651 Begin the shasum.py script Franz Glasner <fzglas.hg@dom66.de> parents: diff changeset	14
13 db64e282b049 Implement a version option Franz Glasner <fzglas.hg@dom66.de> parents: 12 diff changeset	15
30 ffcce6062bee Put the version number info the optinal common module _cutils.py Franz Glasner <fzglas.hg@dom66.de> parents: 27 diff changeset	16 try:
ffcce6062bee Put the version number info the optinal common module _cutils.py Franz Glasner <fzglas.hg@dom66.de> parents: 27 diff changeset	17 from _cutils import __version__
ffcce6062bee Put the version number info the optinal common module _cutils.py Franz Glasner <fzglas.hg@dom66.de> parents: 27 diff changeset	18 except ImportError:
ffcce6062bee Put the version number info the optinal common module _cutils.py Franz Glasner <fzglas.hg@dom66.de> parents: 27 diff changeset	19 __version__ = "unknown"
13 db64e282b049 Implement a version option Franz Glasner <fzglas.hg@dom66.de> parents: 12 diff changeset	20
27 c29bd96dcd4f Put the HG revision into the version output also Franz Glasner <fzglas.hg@dom66.de> parents: 26 diff changeset	21 __revision__ = "\|VCSRevision\|"
c29bd96dcd4f Put the HG revision into the version output also Franz Glasner <fzglas.hg@dom66.de> parents: 26 diff changeset	22 __date__ = "\|VCSJustDate\|"
c29bd96dcd4f Put the HG revision into the version output also Franz Glasner <fzglas.hg@dom66.de> parents: 26 diff changeset	23
13 db64e282b049 Implement a version option Franz Glasner <fzglas.hg@dom66.de> parents: 12 diff changeset	24
1 bbf4e0f5b651 Begin the shasum.py script Franz Glasner <fzglas.hg@dom66.de> parents: diff changeset	25 import argparse
51 58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	26 import base64
58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	27 import binascii
1 bbf4e0f5b651 Begin the shasum.py script Franz Glasner <fzglas.hg@dom66.de> parents: diff changeset	28 import hashlib
12 5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	29 import io
23 232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	30 try:
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	31 import mmap
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	32 except ImportError:
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	33 mmap = None
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	34 import os
12 5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	35 import re
23 232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	36 import stat
1 bbf4e0f5b651 Begin the shasum.py script Franz Glasner <fzglas.hg@dom66.de> parents: diff changeset	37 import sys
bbf4e0f5b651 Begin the shasum.py script Franz Glasner <fzglas.hg@dom66.de> parents: diff changeset	38
bbf4e0f5b651 Begin the shasum.py script Franz Glasner <fzglas.hg@dom66.de> parents: diff changeset	39
2 5510a39a2d04 Basic hashing with proper binary stdin/stdout support for Py2, Py3 and Windows Franz Glasner <fzglas.hg@dom66.de> parents: 1 diff changeset	40 PY2 = sys.version_info[0] < 3
5510a39a2d04 Basic hashing with proper binary stdin/stdout support for Py2, Py3 and Windows Franz Glasner <fzglas.hg@dom66.de> parents: 1 diff changeset	41
23 232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	42 CHUNK_SIZE = 1024*1024
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	43 MAP_CHUNK_SIZE = 6410241024
2 5510a39a2d04 Basic hashing with proper binary stdin/stdout support for Py2, Py3 and Windows Franz Glasner <fzglas.hg@dom66.de> parents: 1 diff changeset	44
5510a39a2d04 Basic hashing with proper binary stdin/stdout support for Py2, Py3 and Windows Franz Glasner <fzglas.hg@dom66.de> parents: 1 diff changeset	45
1 bbf4e0f5b651 Begin the shasum.py script Franz Glasner <fzglas.hg@dom66.de> parents: diff changeset	46 def main(argv=None):
bbf4e0f5b651 Begin the shasum.py script Franz Glasner <fzglas.hg@dom66.de> parents: diff changeset	47 aparser = argparse.ArgumentParser(
bbf4e0f5b651 Begin the shasum.py script Franz Glasner <fzglas.hg@dom66.de> parents: diff changeset	48 description="Python implementation of shasum",
bbf4e0f5b651 Begin the shasum.py script Franz Glasner <fzglas.hg@dom66.de> parents: diff changeset	49 fromfile_prefix_chars='@')
2 5510a39a2d04 Basic hashing with proper binary stdin/stdout support for Py2, Py3 and Windows Franz Glasner <fzglas.hg@dom66.de> parents: 1 diff changeset	50 aparser.add_argument(
7 47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	51 "--algorithm", "-a", action="store", type=argv2algo,
8 048b97213a23 Change the default algorithm to SHA1 to be compatible with Perl's shasum Franz Glasner <fzglas.hg@dom66.de> parents: 7 diff changeset	52 help="1 (default), 224, 256, 384, 512, 3-224, 3-256, 3-384, 3-512, blake2b, blake2s, md5")
7 47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	53 aparser.add_argument(
51 58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	54 "--base64", action="store_true",
58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	55 help="output checksums in base64 notation, not hexadecimal (OpenBSD).")
58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	56 aparser.add_argument(
3 5a6ed622846c Add comman line switches for reading in binary and text mode Franz Glasner <fzglas.hg@dom66.de> parents: 2 diff changeset	57 "--binary", "-b", action="store_false", dest="text_mode", default=False,
5a6ed622846c Add comman line switches for reading in binary and text mode Franz Glasner <fzglas.hg@dom66.de> parents: 2 diff changeset	58 help="read in binary mode (default)")
5a6ed622846c Add comman line switches for reading in binary and text mode Franz Glasner <fzglas.hg@dom66.de> parents: 2 diff changeset	59 aparser.add_argument(
9 81f28bf89c26 Some more output selection options and documentation Franz Glasner <fzglas.hg@dom66.de> parents: 8 diff changeset	60 "--bsd", "-B", action="store_true", dest="bsd", default=False,
17 184ab1da1307 Extend help messages Franz Glasner <fzglas.hg@dom66.de> parents: 14 diff changeset	61 help="Write BSD style output. This is also the default output format of :command:`openssl dgst`.")
9 81f28bf89c26 Some more output selection options and documentation Franz Glasner <fzglas.hg@dom66.de> parents: 8 diff changeset	62 aparser.add_argument(
12 5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	63 "--check", "-c", action="store_true",
17 184ab1da1307 Extend help messages Franz Glasner <fzglas.hg@dom66.de> parents: 14 diff changeset	64 help="""Read digests from FILEs and check them.
184ab1da1307 Extend help messages Franz Glasner <fzglas.hg@dom66.de> parents: 14 diff changeset	65 If this option is specified, the FILE options become checklists. Each
184ab1da1307 Extend help messages Franz Glasner <fzglas.hg@dom66.de> parents: 14 diff changeset	66 checklist should contain hash results in a supported format, which will
184ab1da1307 Extend help messages Franz Glasner <fzglas.hg@dom66.de> parents: 14 diff changeset	67 be verified against the specified paths. Output consists of the digest
184ab1da1307 Extend help messages Franz Glasner <fzglas.hg@dom66.de> parents: 14 diff changeset	68 used, the file name, and an OK, FAILED, or MISSING for the result of
184ab1da1307 Extend help messages Franz Glasner <fzglas.hg@dom66.de> parents: 14 diff changeset	69 the comparison. This will validate any of the supported checksums.
184ab1da1307 Extend help messages Franz Glasner <fzglas.hg@dom66.de> parents: 14 diff changeset	70 If no file is given, stdin is used.""")
12 5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	71 aparser.add_argument(
22 6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	72 "--checklist", "-C", metavar="CHECKLIST",
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	73 help="""Compare the checksum of each FILE against the checksums in
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	74 the CHECKLIST. Any specified FILE that is not listed in the CHECKLIST will
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	75 generate an error.""")
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	76
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	77 aparser.add_argument(
9 81f28bf89c26 Some more output selection options and documentation Franz Glasner <fzglas.hg@dom66.de> parents: 8 diff changeset	78 "--reverse", "-r", action="store_false", dest="bsd", default=False,
81f28bf89c26 Some more output selection options and documentation Franz Glasner <fzglas.hg@dom66.de> parents: 8 diff changeset	79 help="explicitely select normal coreutils style output (to be option compatible with BSD style commands and :command:`openssl dgst -r`)")
81f28bf89c26 Some more output selection options and documentation Franz Glasner <fzglas.hg@dom66.de> parents: 8 diff changeset	80 aparser.add_argument(
81f28bf89c26 Some more output selection options and documentation Franz Glasner <fzglas.hg@dom66.de> parents: 8 diff changeset	81 "--tag", action="store_true", dest="bsd", default=False,
81f28bf89c26 Some more output selection options and documentation Franz Glasner <fzglas.hg@dom66.de> parents: 8 diff changeset	82 help="alias for the `--bsd' option (to be compatible with :command:`b2sum`)")
5 bbcb225640de Handle standard and BSD-style output formats Franz Glasner <fzglas.hg@dom66.de> parents: 4 diff changeset	83 aparser.add_argument(
3 5a6ed622846c Add comman line switches for reading in binary and text mode Franz Glasner <fzglas.hg@dom66.de> parents: 2 diff changeset	84 "--text", "-t", action="store_true", dest="text_mode", default=False,
6 a21e83c855cc Help message: drop "yet" for text-mode flag Franz Glasner <fzglas.hg@dom66.de> parents: 5 diff changeset	85 help="read in text mode (not supported)")
3 5a6ed622846c Add comman line switches for reading in binary and text mode Franz Glasner <fzglas.hg@dom66.de> parents: 2 diff changeset	86 aparser.add_argument(
27 c29bd96dcd4f Put the HG revision into the version output also Franz Glasner <fzglas.hg@dom66.de> parents: 26 diff changeset	87 "--version", "-v", action="version", version="%s (rv:%s)" % (__version__, __revision__))
13 db64e282b049 Implement a version option Franz Glasner <fzglas.hg@dom66.de> parents: 12 diff changeset	88 aparser.add_argument(
2 5510a39a2d04 Basic hashing with proper binary stdin/stdout support for Py2, Py3 and Windows Franz Glasner <fzglas.hg@dom66.de> parents: 1 diff changeset	89 "files", nargs="*", metavar="FILE")
1 bbf4e0f5b651 Begin the shasum.py script Franz Glasner <fzglas.hg@dom66.de> parents: diff changeset	90
bbf4e0f5b651 Begin the shasum.py script Franz Glasner <fzglas.hg@dom66.de> parents: diff changeset	91 opts = aparser.parse_args(args=argv)
bbf4e0f5b651 Begin the shasum.py script Franz Glasner <fzglas.hg@dom66.de> parents: diff changeset	92
3 5a6ed622846c Add comman line switches for reading in binary and text mode Franz Glasner <fzglas.hg@dom66.de> parents: 2 diff changeset	93 if opts.text_mode:
5a6ed622846c Add comman line switches for reading in binary and text mode Franz Glasner <fzglas.hg@dom66.de> parents: 2 diff changeset	94 print("ERROR: text mode not supported", file=sys.stderr)
22 6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	95 sys.exit(78) # :manpage:`sysexits(3)` EX_CONFIG
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	96
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	97 if opts.check and opts.checklist:
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	98 print("ERROR: only one of --check or --checklist allowed",
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	99 file=sys.stderr)
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	100 sys.exit(64) # :manpage:`sysexits(3)` EX_USAGE
5 bbcb225640de Handle standard and BSD-style output formats Franz Glasner <fzglas.hg@dom66.de> parents: 4 diff changeset	101
7 47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	102 if not opts.algorithm:
8 048b97213a23 Change the default algorithm to SHA1 to be compatible with Perl's shasum Franz Glasner <fzglas.hg@dom66.de> parents: 7 diff changeset	103 opts.algorithm = argv2algo("1")
7 47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	104
47 5bec7a5d894a Allow internal output redirection: print() always to explicitely given file objects Franz Glasner <fzglas.hg@dom66.de> parents: 45 diff changeset	105 opts.dest = None
5bec7a5d894a Allow internal output redirection: print() always to explicitely given file objects Franz Glasner <fzglas.hg@dom66.de> parents: 45 diff changeset	106
45 b25ef7293bf2 Enhance shasum.py to allow it to be used as Python module from within other programs more easily Franz Glasner <fzglas.hg@dom66.de> parents: 43 diff changeset	107 return shasum(opts)
b25ef7293bf2 Enhance shasum.py to allow it to be used as Python module from within other programs more easily Franz Glasner <fzglas.hg@dom66.de> parents: 43 diff changeset	108
b25ef7293bf2 Enhance shasum.py to allow it to be used as Python module from within other programs more easily Franz Glasner <fzglas.hg@dom66.de> parents: 43 diff changeset	109
b25ef7293bf2 Enhance shasum.py to allow it to be used as Python module from within other programs more easily Franz Glasner <fzglas.hg@dom66.de> parents: 43 diff changeset	110 def gen_opts(files=[], algorithm="SHA1", bsd=False, text_mode=False,
51 58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	111 checklist=False, check=False, dest=None, base64=False):
45 b25ef7293bf2 Enhance shasum.py to allow it to be used as Python module from within other programs more easily Franz Glasner <fzglas.hg@dom66.de> parents: 43 diff changeset	112 if text_mode:
b25ef7293bf2 Enhance shasum.py to allow it to be used as Python module from within other programs more easily Franz Glasner <fzglas.hg@dom66.de> parents: 43 diff changeset	113 raise ValueError("text mode not supported")
b25ef7293bf2 Enhance shasum.py to allow it to be used as Python module from within other programs more easily Franz Glasner <fzglas.hg@dom66.de> parents: 43 diff changeset	114 if checklist and check:
b25ef7293bf2 Enhance shasum.py to allow it to be used as Python module from within other programs more easily Franz Glasner <fzglas.hg@dom66.de> parents: 43 diff changeset	115 raise ValueError("only one of `checklist' or `check' is allowed")
b25ef7293bf2 Enhance shasum.py to allow it to be used as Python module from within other programs more easily Franz Glasner <fzglas.hg@dom66.de> parents: 43 diff changeset	116 opts = argparse.Namespace(files=files,
b25ef7293bf2 Enhance shasum.py to allow it to be used as Python module from within other programs more easily Franz Glasner <fzglas.hg@dom66.de> parents: 43 diff changeset	117 algorithm=(algotag2algotype(algorithm),
b25ef7293bf2 Enhance shasum.py to allow it to be used as Python module from within other programs more easily Franz Glasner <fzglas.hg@dom66.de> parents: 43 diff changeset	118 algorithm),
b25ef7293bf2 Enhance shasum.py to allow it to be used as Python module from within other programs more easily Franz Glasner <fzglas.hg@dom66.de> parents: 43 diff changeset	119 bsd=bsd,
b25ef7293bf2 Enhance shasum.py to allow it to be used as Python module from within other programs more easily Franz Glasner <fzglas.hg@dom66.de> parents: 43 diff changeset	120 checklist=checklist,
b25ef7293bf2 Enhance shasum.py to allow it to be used as Python module from within other programs more easily Franz Glasner <fzglas.hg@dom66.de> parents: 43 diff changeset	121 check=check,
47 5bec7a5d894a Allow internal output redirection: print() always to explicitely given file objects Franz Glasner <fzglas.hg@dom66.de> parents: 45 diff changeset	122 text_mode=False,
51 58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	123 dest=dest,
58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	124 base64=base64)
45 b25ef7293bf2 Enhance shasum.py to allow it to be used as Python module from within other programs more easily Franz Glasner <fzglas.hg@dom66.de> parents: 43 diff changeset	125 return opts
b25ef7293bf2 Enhance shasum.py to allow it to be used as Python module from within other programs more easily Franz Glasner <fzglas.hg@dom66.de> parents: 43 diff changeset	126
b25ef7293bf2 Enhance shasum.py to allow it to be used as Python module from within other programs more easily Franz Glasner <fzglas.hg@dom66.de> parents: 43 diff changeset	127
b25ef7293bf2 Enhance shasum.py to allow it to be used as Python module from within other programs more easily Franz Glasner <fzglas.hg@dom66.de> parents: 43 diff changeset	128 def shasum(opts):
12 5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	129 if opts.check:
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	130 return verify_digests_from_files(opts)
22 6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	131 elif opts.checklist:
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	132 return verify_digests_with_checklist(opts)
12 5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	133 else:
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	134 return generate_digests(opts)
10 77446cd3ea6f Move the digest generation loop from "main()" into an own function "generate_digests()". Franz Glasner <fzglas.hg@dom66.de> parents: 9 diff changeset	135
77446cd3ea6f Move the digest generation loop from "main()" into an own function "generate_digests()". Franz Glasner <fzglas.hg@dom66.de> parents: 9 diff changeset	136
77446cd3ea6f Move the digest generation loop from "main()" into an own function "generate_digests()". Franz Glasner <fzglas.hg@dom66.de> parents: 9 diff changeset	137 def generate_digests(opts):
5 bbcb225640de Handle standard and BSD-style output formats Franz Glasner <fzglas.hg@dom66.de> parents: 4 diff changeset	138 if opts.bsd:
bbcb225640de Handle standard and BSD-style output formats Franz Glasner <fzglas.hg@dom66.de> parents: 4 diff changeset	139 out = out_bsd
bbcb225640de Handle standard and BSD-style output formats Franz Glasner <fzglas.hg@dom66.de> parents: 4 diff changeset	140 else:
bbcb225640de Handle standard and BSD-style output formats Franz Glasner <fzglas.hg@dom66.de> parents: 4 diff changeset	141 out = out_std
20 8f0241ed4a00 Do not append "-" to an empty FILE list any more but check explicitely for an empty list Franz Glasner <fzglas.hg@dom66.de> parents: 19 diff changeset	142 if not opts.files or (len(opts.files) == 1 and opts.files[0] == '-'):
4 67d10529ce88 FIX: "-" filename handling now consistent with Perl shasum Franz Glasner <fzglas.hg@dom66.de> parents: 3 diff changeset	143 if PY2:
67d10529ce88 FIX: "-" filename handling now consistent with Perl shasum Franz Glasner <fzglas.hg@dom66.de> parents: 3 diff changeset	144 if sys.platform == "win32":
11 15c3416d3677 FIX: "msvcrt" is a top-level module on Windows Franz Glasner <fzglas.hg@dom66.de> parents: 10 diff changeset	145 import os, msvcrt # noqa: E401
4 67d10529ce88 FIX: "-" filename handling now consistent with Perl shasum Franz Glasner <fzglas.hg@dom66.de> parents: 3 diff changeset	146 msvcrt.setmode(sys.stdin.fileno(), os.O_BINARY)
67d10529ce88 FIX: "-" filename handling now consistent with Perl shasum Franz Glasner <fzglas.hg@dom66.de> parents: 3 diff changeset	147 source = sys.stdin
2 5510a39a2d04 Basic hashing with proper binary stdin/stdout support for Py2, Py3 and Windows Franz Glasner <fzglas.hg@dom66.de> parents: 1 diff changeset	148 else:
4 67d10529ce88 FIX: "-" filename handling now consistent with Perl shasum Franz Glasner <fzglas.hg@dom66.de> parents: 3 diff changeset	149 source = sys.stdin.buffer
5 bbcb225640de Handle standard and BSD-style output formats Franz Glasner <fzglas.hg@dom66.de> parents: 4 diff changeset	150 out(sys.stdout,
23 232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	151 compute_digest_stream(opts.algorithm[0], source),
5 bbcb225640de Handle standard and BSD-style output formats Franz Glasner <fzglas.hg@dom66.de> parents: 4 diff changeset	152 None,
7 47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	153 opts.algorithm[1],
51 58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	154 True,
58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	155 opts.base64)
4 67d10529ce88 FIX: "-" filename handling now consistent with Perl shasum Franz Glasner <fzglas.hg@dom66.de> parents: 3 diff changeset	156 else:
67d10529ce88 FIX: "-" filename handling now consistent with Perl shasum Franz Glasner <fzglas.hg@dom66.de> parents: 3 diff changeset	157 for fn in opts.files:
47 5bec7a5d894a Allow internal output redirection: print() always to explicitely given file objects Franz Glasner <fzglas.hg@dom66.de> parents: 45 diff changeset	158 out(opts.dest or sys.stdout,
23 232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	159 compute_digest_file(opts.algorithm[0], fn),
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	160 fn,
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	161 opts.algorithm[1],
51 58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	162 True,
58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	163 opts.base64)
12 5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	164 return 0
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	165
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	166
51 58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	167 def compare_digests_equal(given_digest, expected_digest, algo):
58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	168 """Compare a newly computed binary digest `given_digest` with a digest
58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	169 string (hex or base64) in `expected_digest`.
58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	170
58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	171 :param bytes given_digest:
58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	172 :param str expected_digest: hexlified or base64 encoded digest
58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	173 :param algo: The algorithm (factory)
58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	174 :return: `True` if the digests are equal, `False` if not
58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	175 :rtype: bool
58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	176
58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	177 """
58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	178 if len(expected_digest) == algo().digest_size * 2:
58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	179 # hex
58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	180 try:
58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	181 exd = binascii.unhexlify(expected_digest)
58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	182 except TypeError:
58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	183 return False
58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	184 else:
58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	185 # base64
58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	186 try:
58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	187 exd = base64.b64decode(expected_digest)
58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	188 except TypeError:
58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	189 return False
58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	190 return given_digest == exd
58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	191
58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	192
22 6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	193 def verify_digests_with_checklist(opts):
47 5bec7a5d894a Allow internal output redirection: print() always to explicitely given file objects Franz Glasner <fzglas.hg@dom66.de> parents: 45 diff changeset	194 dest = opts.dest or sys.stdout
22 6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	195 exit_code = 0
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	196 if not opts.files or (len(opts.files) == 1 and opts.files[0] == '-'):
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	197 if PY2:
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	198 if sys.platform == "win32":
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	199 import os, msvcrt # noqa: E401
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	200 msvcrt.setmode(sys.stdin.fileno(), os.O_BINARY)
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	201 source = sys.stdin
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	202 else:
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	203 source = sys.stdin.buffer
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	204 pl = get_parsed_digest_line_from_checklist(opts.checklist, opts, None)
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	205 if pl is None:
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	206 exit_code = 1
47 5bec7a5d894a Allow internal output redirection: print() always to explicitely given file objects Franz Glasner <fzglas.hg@dom66.de> parents: 45 diff changeset	207 print("-: MISSING", file=dest)
22 6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	208 else:
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	209 tag, algo, cl_filename, cl_digest = pl
23 232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	210 computed_digest = compute_digest_stream(algo, source)
51 58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	211 if compare_digests_equal(computed_digest, cl_digest, algo):
22 6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	212 res = "OK"
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	213 else:
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	214 res = "FAILED"
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	215 exit_code = 1
47 5bec7a5d894a Allow internal output redirection: print() always to explicitely given file objects Franz Glasner <fzglas.hg@dom66.de> parents: 45 diff changeset	216 print("{}: {}: {}".format(tag, "-", res), file=dest)
22 6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	217 else:
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	218 for fn in opts.files:
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	219 pl = get_parsed_digest_line_from_checklist(opts.checklist, opts, fn)
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	220 if pl is None:
47 5bec7a5d894a Allow internal output redirection: print() always to explicitely given file objects Franz Glasner <fzglas.hg@dom66.de> parents: 45 diff changeset	221 print("{}: MISSING".format(fn), file=dest)
22 6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	222 exit_code = 1
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	223 else:
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	224 tag, algo, cl_filename, cl_digest = pl
23 232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	225 computed_digest = compute_digest_file(algo, fn)
51 58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	226 if compare_digests_equal(computed_digest, cl_digest, algo):
22 6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	227 res = "OK"
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	228 else:
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	229 exit_code = 1
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	230 res = "FAILED"
47 5bec7a5d894a Allow internal output redirection: print() always to explicitely given file objects Franz Glasner <fzglas.hg@dom66.de> parents: 45 diff changeset	231 print("{}: {}: {}".format(tag, fn, res), file=dest)
22 6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	232 return exit_code
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	233
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	234
12 5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	235 def verify_digests_from_files(opts):
47 5bec7a5d894a Allow internal output redirection: print() always to explicitely given file objects Franz Glasner <fzglas.hg@dom66.de> parents: 45 diff changeset	236 dest = opts.dest or sys.stdout
12 5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	237 exit_code = 0
20 8f0241ed4a00 Do not append "-" to an empty FILE list any more but check explicitely for an empty list Franz Glasner <fzglas.hg@dom66.de> parents: 19 diff changeset	238 if not opts.files or (len(opts.files) == 1 and opts.files[0] == '-'):
12 5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	239 for checkline in sys.stdin:
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	240 if not checkline:
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	241 continue
18 285848db0b52 When verifying/checking digests: also print the digest tag used Franz Glasner <fzglas.hg@dom66.de> parents: 17 diff changeset	242 r, fn, tag = handle_checkline(opts, checkline)
47 5bec7a5d894a Allow internal output redirection: print() always to explicitely given file objects Franz Glasner <fzglas.hg@dom66.de> parents: 45 diff changeset	243 print("{}: {}: {}".format(tag, fn, r.upper()), file=dest)
12 5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	244 if r != "ok" and exit_code == 0:
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	245 exit_code = 1
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	246 else:
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	247 for fn in opts.files:
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	248 with io.open(fn, "rt", encoding="utf-8") as checkfile:
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	249 for checkline in checkfile:
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	250 if not checkline:
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	251 continue
18 285848db0b52 When verifying/checking digests: also print the digest tag used Franz Glasner <fzglas.hg@dom66.de> parents: 17 diff changeset	252 r, fn, tag = handle_checkline(opts, checkline)
47 5bec7a5d894a Allow internal output redirection: print() always to explicitely given file objects Franz Glasner <fzglas.hg@dom66.de> parents: 45 diff changeset	253 print("{}: {}: {}".format(tag, fn, r.upper()), file=dest)
12 5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	254 if r != "ok" and exit_code == 0:
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	255 exit_code = 1
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	256 return exit_code
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	257
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	258
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	259 def handle_checkline(opts, line):
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	260 """
18 285848db0b52 When verifying/checking digests: also print the digest tag used Franz Glasner <fzglas.hg@dom66.de> parents: 17 diff changeset	261 :return: a tuple with static "ok", "missing", or "failed", the filename and
285848db0b52 When verifying/checking digests: also print the digest tag used Franz Glasner <fzglas.hg@dom66.de> parents: 17 diff changeset	262 the digest used
285848db0b52 When verifying/checking digests: also print the digest tag used Franz Glasner <fzglas.hg@dom66.de> parents: 17 diff changeset	263 :rtype: tuple(str, str, str)
12 5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	264
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	265 """
21 f2d634270e1c Refactor: parse a line of a digest file within a dedicated funcion Franz Glasner <fzglas.hg@dom66.de> parents: 20 diff changeset	266 parts = parse_digest_line(opts, line)
f2d634270e1c Refactor: parse a line of a digest file within a dedicated funcion Franz Glasner <fzglas.hg@dom66.de> parents: 20 diff changeset	267 if not parts:
f2d634270e1c Refactor: parse a line of a digest file within a dedicated funcion Franz Glasner <fzglas.hg@dom66.de> parents: 20 diff changeset	268 raise ValueError(
f2d634270e1c Refactor: parse a line of a digest file within a dedicated funcion Franz Glasner <fzglas.hg@dom66.de> parents: 20 diff changeset	269 "improperly formatted digest line: {}".format(line))
f2d634270e1c Refactor: parse a line of a digest file within a dedicated funcion Franz Glasner <fzglas.hg@dom66.de> parents: 20 diff changeset	270 tag, algo, fn, digest = parts
12 5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	271 try:
23 232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	272 d = compute_digest_file(algo, fn)
51 58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	273 if compare_digests_equal(d, digest, algo):
23 232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	274 return ("ok", fn, tag)
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	275 else:
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	276 return ("failed", fn, tag)
12 5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	277 except EnvironmentError:
18 285848db0b52 When verifying/checking digests: also print the digest tag used Franz Glasner <fzglas.hg@dom66.de> parents: 17 diff changeset	278 return ("missing", fn, tag)
5 bbcb225640de Handle standard and BSD-style output formats Franz Glasner <fzglas.hg@dom66.de> parents: 4 diff changeset	279
bbcb225640de Handle standard and BSD-style output formats Franz Glasner <fzglas.hg@dom66.de> parents: 4 diff changeset	280
22 6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	281 def get_parsed_digest_line_from_checklist(checklist, opts, filename):
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	282 if filename is None:
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	283 filenames = ("-", "stdin", "", )
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	284 else:
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	285 filenames = (
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	286 normalize_filename(filename, strip_leading_dot_slash=True),)
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	287 with io.open(checklist, "rt", encoding="utf-8") as clf:
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	288 for checkline in clf:
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	289 if not checkline:
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	290 continue
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	291 parts = parse_digest_line(opts, checkline)
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	292 if not parts:
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	293 raise ValueError(
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	294 "improperly formatted digest line: {}".format(checkline))
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	295 fn = normalize_filename(parts[2], strip_leading_dot_slash=True)
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	296 if fn in filenames:
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	297 return parts
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	298 else:
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	299 return None
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	300
6bdfc5ad4656 Implemented OpenBSD's -C (aka --checklist) option for shasum Franz Glasner <fzglas.hg@dom66.de> parents: 21 diff changeset	301
21 f2d634270e1c Refactor: parse a line of a digest file within a dedicated funcion Franz Glasner <fzglas.hg@dom66.de> parents: 20 diff changeset	302 def parse_digest_line(opts, line):
f2d634270e1c Refactor: parse a line of a digest file within a dedicated funcion Franz Glasner <fzglas.hg@dom66.de> parents: 20 diff changeset	303 """Parse a `line` of a digest file and return its parts.
f2d634270e1c Refactor: parse a line of a digest file within a dedicated funcion Franz Glasner <fzglas.hg@dom66.de> parents: 20 diff changeset	304
f2d634270e1c Refactor: parse a line of a digest file within a dedicated funcion Franz Glasner <fzglas.hg@dom66.de> parents: 20 diff changeset	305 :return: a tuple of the normalized algorithm tag, the algorithm
f2d634270e1c Refactor: parse a line of a digest file within a dedicated funcion Franz Glasner <fzglas.hg@dom66.de> parents: 20 diff changeset	306 constructor, the filename and the hex digest;
f2d634270e1c Refactor: parse a line of a digest file within a dedicated funcion Franz Glasner <fzglas.hg@dom66.de> parents: 20 diff changeset	307 if `line` cannot be parsed successfully `None` is returned
f2d634270e1c Refactor: parse a line of a digest file within a dedicated funcion Franz Glasner <fzglas.hg@dom66.de> parents: 20 diff changeset	308 :rtype: tuple(str, obj, str, str) or None
f2d634270e1c Refactor: parse a line of a digest file within a dedicated funcion Franz Glasner <fzglas.hg@dom66.de> parents: 20 diff changeset	309
f2d634270e1c Refactor: parse a line of a digest file within a dedicated funcion Franz Glasner <fzglas.hg@dom66.de> parents: 20 diff changeset	310 Handles coreutils and BSD-style file formats.
f2d634270e1c Refactor: parse a line of a digest file within a dedicated funcion Franz Glasner <fzglas.hg@dom66.de> parents: 20 diff changeset	311
f2d634270e1c Refactor: parse a line of a digest file within a dedicated funcion Franz Glasner <fzglas.hg@dom66.de> parents: 20 diff changeset	312 """
f2d634270e1c Refactor: parse a line of a digest file within a dedicated funcion Franz Glasner <fzglas.hg@dom66.de> parents: 20 diff changeset	313 # determine checkfile format (BSD or coreutils)
f2d634270e1c Refactor: parse a line of a digest file within a dedicated funcion Franz Glasner <fzglas.hg@dom66.de> parents: 20 diff changeset	314 # BSD?
f2d634270e1c Refactor: parse a line of a digest file within a dedicated funcion Franz Glasner <fzglas.hg@dom66.de> parents: 20 diff changeset	315 mo = re.search(r"\A(\S+)\s$(.)$\s=\s(.+)\n?\Z", line)
f2d634270e1c Refactor: parse a line of a digest file within a dedicated funcion Franz Glasner <fzglas.hg@dom66.de> parents: 20 diff changeset	316 if mo:
f2d634270e1c Refactor: parse a line of a digest file within a dedicated funcion Franz Glasner <fzglas.hg@dom66.de> parents: 20 diff changeset	317 # (tag, algorithm, filename, digest)
f2d634270e1c Refactor: parse a line of a digest file within a dedicated funcion Franz Glasner <fzglas.hg@dom66.de> parents: 20 diff changeset	318 return (mo.group(1),
f2d634270e1c Refactor: parse a line of a digest file within a dedicated funcion Franz Glasner <fzglas.hg@dom66.de> parents: 20 diff changeset	319 algotag2algotype(mo.group(1)),
f2d634270e1c Refactor: parse a line of a digest file within a dedicated funcion Franz Glasner <fzglas.hg@dom66.de> parents: 20 diff changeset	320 mo.group(2),
f2d634270e1c Refactor: parse a line of a digest file within a dedicated funcion Franz Glasner <fzglas.hg@dom66.de> parents: 20 diff changeset	321 mo.group(3))
f2d634270e1c Refactor: parse a line of a digest file within a dedicated funcion Franz Glasner <fzglas.hg@dom66.de> parents: 20 diff changeset	322 else:
f2d634270e1c Refactor: parse a line of a digest file within a dedicated funcion Franz Glasner <fzglas.hg@dom66.de> parents: 20 diff changeset	323 # coreutils?
f2d634270e1c Refactor: parse a line of a digest file within a dedicated funcion Franz Glasner <fzglas.hg@dom66.de> parents: 20 diff changeset	324 mo = re.search(r"([^\ ]+) [\*\ ]?(.+)\n?\Z", line)
f2d634270e1c Refactor: parse a line of a digest file within a dedicated funcion Franz Glasner <fzglas.hg@dom66.de> parents: 20 diff changeset	325 if mo:
f2d634270e1c Refactor: parse a line of a digest file within a dedicated funcion Franz Glasner <fzglas.hg@dom66.de> parents: 20 diff changeset	326 # (tag, algorithm, filename, digest)
f2d634270e1c Refactor: parse a line of a digest file within a dedicated funcion Franz Glasner <fzglas.hg@dom66.de> parents: 20 diff changeset	327 return (opts.algorithm[1],
f2d634270e1c Refactor: parse a line of a digest file within a dedicated funcion Franz Glasner <fzglas.hg@dom66.de> parents: 20 diff changeset	328 opts.algorithm[0],
f2d634270e1c Refactor: parse a line of a digest file within a dedicated funcion Franz Glasner <fzglas.hg@dom66.de> parents: 20 diff changeset	329 mo.group(2),
f2d634270e1c Refactor: parse a line of a digest file within a dedicated funcion Franz Glasner <fzglas.hg@dom66.de> parents: 20 diff changeset	330 mo.group(1))
f2d634270e1c Refactor: parse a line of a digest file within a dedicated funcion Franz Glasner <fzglas.hg@dom66.de> parents: 20 diff changeset	331 else:
f2d634270e1c Refactor: parse a line of a digest file within a dedicated funcion Franz Glasner <fzglas.hg@dom66.de> parents: 20 diff changeset	332 return None
f2d634270e1c Refactor: parse a line of a digest file within a dedicated funcion Franz Glasner <fzglas.hg@dom66.de> parents: 20 diff changeset	333
f2d634270e1c Refactor: parse a line of a digest file within a dedicated funcion Franz Glasner <fzglas.hg@dom66.de> parents: 20 diff changeset	334
7 47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	335 def argv2algo(s):
42 e5f6af8364db Typo in docs Franz Glasner <f.glasner@feldmann-mg.com> parents: 30 diff changeset	336 """Convert a command line algorithm specifier into a tuple with the
12 5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	337 type/factory of the digest and the algorithms tag for output purposes.
7 47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	338
47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	339 :param str s: the specifier from the commane line
47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	340 :return: the internal digest specification
47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	341 :rtype: a tuple (digest_type_or_factory, name_in_output)
47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	342
47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	343 String comparisons are done case-insensitively.
47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	344
47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	345 """
47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	346 s = s.lower()
47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	347 if s in ("1", "sha1"):
47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	348 return (hashlib.sha1, "SHA1")
47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	349 elif s in ("224", "sha224"):
47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	350 return (hashlib.sha224, "SHA224")
47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	351 elif s in ("256", "sha256"):
47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	352 return (hashlib.sha256, "SHA256")
47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	353 elif s in ("384", "sha384"):
47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	354 return (hashlib.sha384, "SHA384")
47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	355 elif s in ("512", "sha512"):
47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	356 return (hashlib.sha512, "SHA512")
47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	357 elif s in ("3-224", "sha3-224"):
47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	358 return (hashlib.sha3_224, "SHA3-224")
47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	359 elif s in ("3-256", "sha3-256"):
47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	360 return (hashlib.sha3_256, "SHA3-256")
47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	361 elif s in ("3-384", "sha3-384"):
47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	362 return (hashlib.sha3_384, "SHA3-384")
47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	363 elif s in ("3-512", "sha3-512"):
47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	364 return (hashlib.sha3_512, "SHA3-512")
47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	365 elif s in ("blake2b", "blake2b-512"):
47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	366 return (hashlib.blake2b, "BLAKE2b")
47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	367 elif s in ("blake2s", "blake2s-256"):
47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	368 return (hashlib.blake2s, "BLAKE2s")
47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	369 elif s == "md5":
47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	370 return (hashlib.md5, "MD5")
47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	371 else:
47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	372 raise argparse.ArgumentTypeError(
47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	373 "`{}' is not a recognized algorithm".format(s))
47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	374
47b4c98e4d40 Allow algorithm selection for all algorithms in :mod:`hashlib`. Franz Glasner <fzglas.hg@dom66.de> parents: 6 diff changeset	375
12 5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	376 def algotag2algotype(s):
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	377 """Convert the algorithm specifier in a BSD-style digest file to the
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	378 type/factory of the corresponding algorithm.
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	379
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	380 :param str s: the tag (i.e. normalized name) or the algorithm
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	381 :return: the digest type or factory for `s`
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	382
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	383 All string comparisons are case-sensitive.
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	384
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	385 """
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	386 if s == "SHA1":
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	387 return hashlib.sha1
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	388 elif s == "SHA224":
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	389 return hashlib.sha224
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	390 elif s == "SHA256":
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	391 return hashlib.sha256
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	392 elif s == "SHA384":
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	393 return hashlib.sha384
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	394 elif s == "SHA512":
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	395 return hashlib.sha512
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	396 elif s == "SHA3-224":
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	397 return hashlib.sha3_224
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	398 elif s == "SHA3-256":
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	399 return hashlib.sha3_256
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	400 elif s == "SHA3-384":
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	401 return hashlib.sha3_384
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	402 elif s == "SHA3-512":
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	403 return hashlib.sha3_512
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	404 elif s == "BLAKE2b":
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	405 return hashlib.blake2b
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	406 elif s == "BLAKE2s":
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	407 return hashlib.blake2s
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	408 elif s == "MD5":
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	409 return hashlib.md5
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	410 else:
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	411 raise ValueError("unknown algorithm: {}".format(s))
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	412
5e2c9123f93f Implemented digest verification: -c or --check option Franz Glasner <fzglas.hg@dom66.de> parents: 11 diff changeset	413
51 58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	414 def out_bsd(dest, digest, filename, digestname, binary, use_base64):
9 81f28bf89c26 Some more output selection options and documentation Franz Glasner <fzglas.hg@dom66.de> parents: 8 diff changeset	415 """BSD format output, also :command:`openssl dgst` and
81f28bf89c26 Some more output selection options and documentation Franz Glasner <fzglas.hg@dom66.de> parents: 8 diff changeset	416 :command:`b2sum --tag" format output
81f28bf89c26 Some more output selection options and documentation Franz Glasner <fzglas.hg@dom66.de> parents: 8 diff changeset	417
81f28bf89c26 Some more output selection options and documentation Franz Glasner <fzglas.hg@dom66.de> parents: 8 diff changeset	418 """
51 58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	419 if use_base64:
58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	420 digest = base64.b64encode(digest).decode("ascii")
58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	421 else:
58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	422 digest = binascii.hexlify(digest).decode("ascii")
5 bbcb225640de Handle standard and BSD-style output formats Franz Glasner <fzglas.hg@dom66.de> parents: 4 diff changeset	423 if filename is None:
bbcb225640de Handle standard and BSD-style output formats Franz Glasner <fzglas.hg@dom66.de> parents: 4 diff changeset	424 print(digest, file=dest)
bbcb225640de Handle standard and BSD-style output formats Franz Glasner <fzglas.hg@dom66.de> parents: 4 diff changeset	425 else:
19 2f9e702e3f7a Convert backslashes in filenames to forward slashes when creating digests Franz Glasner <fzglas.hg@dom66.de> parents: 18 diff changeset	426 print("{} ({}) = {}".format(digestname,
2f9e702e3f7a Convert backslashes in filenames to forward slashes when creating digests Franz Glasner <fzglas.hg@dom66.de> parents: 18 diff changeset	427 normalize_filename(filename),
2f9e702e3f7a Convert backslashes in filenames to forward slashes when creating digests Franz Glasner <fzglas.hg@dom66.de> parents: 18 diff changeset	428 digest),
5 bbcb225640de Handle standard and BSD-style output formats Franz Glasner <fzglas.hg@dom66.de> parents: 4 diff changeset	429 file=dest)
bbcb225640de Handle standard and BSD-style output formats Franz Glasner <fzglas.hg@dom66.de> parents: 4 diff changeset	430
bbcb225640de Handle standard and BSD-style output formats Franz Glasner <fzglas.hg@dom66.de> parents: 4 diff changeset	431
51 58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	432 def out_std(dest, digest, filename, digestname, binary, use_base64):
9 81f28bf89c26 Some more output selection options and documentation Franz Glasner <fzglas.hg@dom66.de> parents: 8 diff changeset	433 """Coreutils format (:command:`shasum` et al.)
81f28bf89c26 Some more output selection options and documentation Franz Glasner <fzglas.hg@dom66.de> parents: 8 diff changeset	434
81f28bf89c26 Some more output selection options and documentation Franz Glasner <fzglas.hg@dom66.de> parents: 8 diff changeset	435 """
51 58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	436 if use_base64:
58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	437 digest = base64.b64encode(digest).decode("ascii")
58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	438 else:
58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	439 digest = binascii.hexlify(digest).decode("ascii")
19 2f9e702e3f7a Convert backslashes in filenames to forward slashes when creating digests Franz Glasner <fzglas.hg@dom66.de> parents: 18 diff changeset	440 print("{} {}{}".format(
2f9e702e3f7a Convert backslashes in filenames to forward slashes when creating digests Franz Glasner <fzglas.hg@dom66.de> parents: 18 diff changeset	441 digest,
2f9e702e3f7a Convert backslashes in filenames to forward slashes when creating digests Franz Glasner <fzglas.hg@dom66.de> parents: 18 diff changeset	442 '*' if binary else ' ',
2f9e702e3f7a Convert backslashes in filenames to forward slashes when creating digests Franz Glasner <fzglas.hg@dom66.de> parents: 18 diff changeset	443 '-' if filename is None else normalize_filename(filename)),
5 bbcb225640de Handle standard and BSD-style output formats Franz Glasner <fzglas.hg@dom66.de> parents: 4 diff changeset	444 file=dest)
2 5510a39a2d04 Basic hashing with proper binary stdin/stdout support for Py2, Py3 and Windows Franz Glasner <fzglas.hg@dom66.de> parents: 1 diff changeset	445
1 bbf4e0f5b651 Begin the shasum.py script Franz Glasner <fzglas.hg@dom66.de> parents: diff changeset	446
23 232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	447 def compute_digest_file(hashobj, filename):
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	448 """
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	449 :param hashobj: a :mod:`hashlib` compatible hash algorithm type or factory
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	450 :param str filename: filename within the filesystem
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	451 :return: the digest in hex form
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	452 :rtype: str
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	453
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	454 """
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	455 h = hashobj()
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	456 flags = os.O_RDONLY
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	457 try:
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	458 flags \|= os.O_BINARY
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	459 except AttributeError:
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	460 pass
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	461 fd = os.open(filename, flags)
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	462 try:
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	463 st = os.fstat(fd)
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	464 filesize = st[stat.ST_SIZE]
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	465 #
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	466 # On Windows mmapped file with length 0 are not supported
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	467 # -> use low-level IO
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	468 #
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	469 if mmap is None:
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	470 while True:
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	471 buf = os.read(fd, CHUNK_SIZE)
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	472 if len(buf) == 0:
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	473 break
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	474 h.update(buf)
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	475 else:
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	476 # mmap
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	477 if filesize < MAP_CHUNK_SIZE:
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	478 mapsize = filesize
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	479 mapoffset = 0
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	480 else:
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	481 mapsize = MAP_CHUNK_SIZE
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	482 mapoffset = 0
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	483 rest = filesize
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	484 while rest > 0:
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	485 m = mmap.mmap(fd,
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	486 mapsize,
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	487 access=mmap.ACCESS_READ,
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	488 offset=mapoffset)
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	489 try:
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	490 h.update(m)
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	491 finally:
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	492 m.close()
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	493 rest -= mapsize
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	494 mapoffset += mapsize
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	495 if rest < mapsize:
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	496 mapsize = rest
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	497 finally:
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	498 os.close(fd)
51 58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	499 return h.digest()
23 232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	500
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	501
232063b73e45 Optimized reading of files by using mmap. Franz Glasner <fzglas.hg@dom66.de> parents: 22 diff changeset	502 def compute_digest_stream(hashobj, instream):
1 bbf4e0f5b651 Begin the shasum.py script Franz Glasner <fzglas.hg@dom66.de> parents: diff changeset	503 """
bbf4e0f5b651 Begin the shasum.py script Franz Glasner <fzglas.hg@dom66.de> parents: diff changeset	504
2 5510a39a2d04 Basic hashing with proper binary stdin/stdout support for Py2, Py3 and Windows Franz Glasner <fzglas.hg@dom66.de> parents: 1 diff changeset	505 :param hashobj: a :mod:`hashlib` compatible hash algorithm type or factory
1 bbf4e0f5b651 Begin the shasum.py script Franz Glasner <fzglas.hg@dom66.de> parents: diff changeset	506 :param instream: a bytes input stream to read the data to be hashed from
bbf4e0f5b651 Begin the shasum.py script Franz Glasner <fzglas.hg@dom66.de> parents: diff changeset	507 :return: the digest in hex form
bbf4e0f5b651 Begin the shasum.py script Franz Glasner <fzglas.hg@dom66.de> parents: diff changeset	508 :rtype: str
bbf4e0f5b651 Begin the shasum.py script Franz Glasner <fzglas.hg@dom66.de> parents: diff changeset	509
bbf4e0f5b651 Begin the shasum.py script Franz Glasner <fzglas.hg@dom66.de> parents: diff changeset	510 """
2 5510a39a2d04 Basic hashing with proper binary stdin/stdout support for Py2, Py3 and Windows Franz Glasner <fzglas.hg@dom66.de> parents: 1 diff changeset	511 h = hashobj()
5510a39a2d04 Basic hashing with proper binary stdin/stdout support for Py2, Py3 and Windows Franz Glasner <fzglas.hg@dom66.de> parents: 1 diff changeset	512 while True:
5510a39a2d04 Basic hashing with proper binary stdin/stdout support for Py2, Py3 and Windows Franz Glasner <fzglas.hg@dom66.de> parents: 1 diff changeset	513 buf = instream.read(CHUNK_SIZE)
5510a39a2d04 Basic hashing with proper binary stdin/stdout support for Py2, Py3 and Windows Franz Glasner <fzglas.hg@dom66.de> parents: 1 diff changeset	514 if buf is not None:
5510a39a2d04 Basic hashing with proper binary stdin/stdout support for Py2, Py3 and Windows Franz Glasner <fzglas.hg@dom66.de> parents: 1 diff changeset	515 if len(buf) == 0:
5510a39a2d04 Basic hashing with proper binary stdin/stdout support for Py2, Py3 and Windows Franz Glasner <fzglas.hg@dom66.de> parents: 1 diff changeset	516 break
5510a39a2d04 Basic hashing with proper binary stdin/stdout support for Py2, Py3 and Windows Franz Glasner <fzglas.hg@dom66.de> parents: 1 diff changeset	517 h.update(buf)
51 58d5a0b6e5b3 Implement the OpenBSD variant (with --base64) to encode digests in base64, not hexadecimal Franz Glasner <f.glasner@feldmann-mg.com> parents: 47 diff changeset	518 return h.digest()
2 5510a39a2d04 Basic hashing with proper binary stdin/stdout support for Py2, Py3 and Windows Franz Glasner <fzglas.hg@dom66.de> parents: 1 diff changeset	519
5510a39a2d04 Basic hashing with proper binary stdin/stdout support for Py2, Py3 and Windows Franz Glasner <fzglas.hg@dom66.de> parents: 1 diff changeset	520
19 2f9e702e3f7a Convert backslashes in filenames to forward slashes when creating digests Franz Glasner <fzglas.hg@dom66.de> parents: 18 diff changeset	521 def normalize_filename(filename, strip_leading_dot_slash=False):
2f9e702e3f7a Convert backslashes in filenames to forward slashes when creating digests Franz Glasner <fzglas.hg@dom66.de> parents: 18 diff changeset	522 filename = filename.replace("\\", "/")
2f9e702e3f7a Convert backslashes in filenames to forward slashes when creating digests Franz Glasner <fzglas.hg@dom66.de> parents: 18 diff changeset	523 if strip_leading_dot_slash:
2f9e702e3f7a Convert backslashes in filenames to forward slashes when creating digests Franz Glasner <fzglas.hg@dom66.de> parents: 18 diff changeset	524 while filename.startswith("./"):
2f9e702e3f7a Convert backslashes in filenames to forward slashes when creating digests Franz Glasner <fzglas.hg@dom66.de> parents: 18 diff changeset	525 filename = filename[2:]
2f9e702e3f7a Convert backslashes in filenames to forward slashes when creating digests Franz Glasner <fzglas.hg@dom66.de> parents: 18 diff changeset	526 return filename
2f9e702e3f7a Convert backslashes in filenames to forward slashes when creating digests Franz Glasner <fzglas.hg@dom66.de> parents: 18 diff changeset	527
2f9e702e3f7a Convert backslashes in filenames to forward slashes when creating digests Franz Glasner <fzglas.hg@dom66.de> parents: 18 diff changeset	528
1 bbf4e0f5b651 Begin the shasum.py script Franz Glasner <fzglas.hg@dom66.de> parents: diff changeset	529 if __name__ == "__main__":
bbf4e0f5b651 Begin the shasum.py script Franz Glasner <fzglas.hg@dom66.de> parents: diff changeset	530 sys.exit(main())

Mercurial > hgrepos > Python > apps > py-cutils

annotate shasum.py @ 51:58d5a0b6e5b3