mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-11-01 17:08:10 +00:00
3a6ab5c7dc
The spdxcheck script currently falls over when confronted with a binary
file (such as Documentation/logo.gif). To avoid that, always open files
in binary mode and decode line-by-line, ignoring encoding errors.
One tricky case is when piping data into the script and reading it from
standard input. By default, standard input will be opened in text mode,
so we need to reopen it in binary mode.
The breakage only happens with python3 and results in a
UnicodeDecodeError (according to Uwe).
Link: http://lkml.kernel.org/r/20181212131210.28024-1-thierry.reding@gmail.com
Fixes: 6f4d29df66 ("scripts/spdxcheck.py: make python3 compliant")
Signed-off-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Jeremy Cline <jcline@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Joe Perches <joe@perches.com>
Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
286 lines
9.5 KiB
Python
Executable file
286 lines
9.5 KiB
Python
Executable file
#!/usr/bin/env python
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# SPDX-License-Identifier: GPL-2.0
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# Copyright Thomas Gleixner <tglx@linutronix.de>
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from argparse import ArgumentParser
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from ply import lex, yacc
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import locale
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import traceback
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import sys
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import git
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import re
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import os
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class ParserException(Exception):
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def __init__(self, tok, txt):
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self.tok = tok
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self.txt = txt
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class SPDXException(Exception):
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def __init__(self, el, txt):
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self.el = el
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self.txt = txt
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class SPDXdata(object):
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def __init__(self):
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self.license_files = 0
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self.exception_files = 0
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self.licenses = [ ]
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self.exceptions = { }
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# Read the spdx data from the LICENSES directory
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def read_spdxdata(repo):
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# The subdirectories of LICENSES in the kernel source
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license_dirs = [ "preferred", "other", "exceptions" ]
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lictree = repo.head.commit.tree['LICENSES']
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spdx = SPDXdata()
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for d in license_dirs:
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for el in lictree[d].traverse():
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if not os.path.isfile(el.path):
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continue
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exception = None
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for l in open(el.path).readlines():
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if l.startswith('Valid-License-Identifier:'):
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lid = l.split(':')[1].strip().upper()
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if lid in spdx.licenses:
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raise SPDXException(el, 'Duplicate License Identifier: %s' %lid)
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else:
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spdx.licenses.append(lid)
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elif l.startswith('SPDX-Exception-Identifier:'):
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exception = l.split(':')[1].strip().upper()
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spdx.exceptions[exception] = []
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elif l.startswith('SPDX-Licenses:'):
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for lic in l.split(':')[1].upper().strip().replace(' ', '').replace('\t', '').split(','):
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if not lic in spdx.licenses:
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raise SPDXException(None, 'Exception %s missing license %s' %(ex, lic))
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spdx.exceptions[exception].append(lic)
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elif l.startswith("License-Text:"):
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if exception:
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if not len(spdx.exceptions[exception]):
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raise SPDXException(el, 'Exception %s is missing SPDX-Licenses' %excid)
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spdx.exception_files += 1
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else:
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spdx.license_files += 1
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break
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return spdx
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class id_parser(object):
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reserved = [ 'AND', 'OR', 'WITH' ]
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tokens = [ 'LPAR', 'RPAR', 'ID', 'EXC' ] + reserved
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precedence = ( ('nonassoc', 'AND', 'OR'), )
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t_ignore = ' \t'
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def __init__(self, spdx):
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self.spdx = spdx
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self.lasttok = None
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self.lastid = None
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self.lexer = lex.lex(module = self, reflags = re.UNICODE)
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# Initialize the parser. No debug file and no parser rules stored on disk
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# The rules are small enough to be generated on the fly
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self.parser = yacc.yacc(module = self, write_tables = False, debug = False)
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self.lines_checked = 0
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self.checked = 0
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self.spdx_valid = 0
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self.spdx_errors = 0
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self.curline = 0
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self.deepest = 0
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# Validate License and Exception IDs
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def validate(self, tok):
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id = tok.value.upper()
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if tok.type == 'ID':
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if not id in self.spdx.licenses:
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raise ParserException(tok, 'Invalid License ID')
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self.lastid = id
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elif tok.type == 'EXC':
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if id not in self.spdx.exceptions:
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raise ParserException(tok, 'Invalid Exception ID')
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if self.lastid not in self.spdx.exceptions[id]:
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raise ParserException(tok, 'Exception not valid for license %s' %self.lastid)
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self.lastid = None
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elif tok.type != 'WITH':
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self.lastid = None
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# Lexer functions
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def t_RPAR(self, tok):
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r'\)'
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self.lasttok = tok.type
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return tok
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def t_LPAR(self, tok):
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r'\('
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self.lasttok = tok.type
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return tok
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def t_ID(self, tok):
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r'[A-Za-z.0-9\-+]+'
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if self.lasttok == 'EXC':
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print(tok)
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raise ParserException(tok, 'Missing parentheses')
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tok.value = tok.value.strip()
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val = tok.value.upper()
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if val in self.reserved:
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tok.type = val
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elif self.lasttok == 'WITH':
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tok.type = 'EXC'
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self.lasttok = tok.type
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self.validate(tok)
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return tok
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def t_error(self, tok):
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raise ParserException(tok, 'Invalid token')
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def p_expr(self, p):
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'''expr : ID
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| ID WITH EXC
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| expr AND expr
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| expr OR expr
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| LPAR expr RPAR'''
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pass
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def p_error(self, p):
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if not p:
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raise ParserException(None, 'Unfinished license expression')
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else:
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raise ParserException(p, 'Syntax error')
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def parse(self, expr):
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self.lasttok = None
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self.lastid = None
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self.parser.parse(expr, lexer = self.lexer)
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def parse_lines(self, fd, maxlines, fname):
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self.checked += 1
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self.curline = 0
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try:
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for line in fd:
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line = line.decode(locale.getpreferredencoding(False), errors='ignore')
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self.curline += 1
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if self.curline > maxlines:
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break
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self.lines_checked += 1
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if line.find("SPDX-License-Identifier:") < 0:
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continue
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expr = line.split(':')[1].replace('*/', '').strip()
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self.parse(expr)
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self.spdx_valid += 1
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#
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# Should we check for more SPDX ids in the same file and
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# complain if there are any?
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#
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break
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except ParserException as pe:
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if pe.tok:
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col = line.find(expr) + pe.tok.lexpos
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tok = pe.tok.value
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sys.stdout.write('%s: %d:%d %s: %s\n' %(fname, self.curline, col, pe.txt, tok))
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else:
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sys.stdout.write('%s: %d:0 %s\n' %(fname, self.curline, col, pe.txt))
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self.spdx_errors += 1
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def scan_git_tree(tree):
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for el in tree.traverse():
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# Exclude stuff which would make pointless noise
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# FIXME: Put this somewhere more sensible
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if el.path.startswith("LICENSES"):
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continue
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if el.path.find("license-rules.rst") >= 0:
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continue
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if not os.path.isfile(el.path):
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continue
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with open(el.path, 'rb') as fd:
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parser.parse_lines(fd, args.maxlines, el.path)
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def scan_git_subtree(tree, path):
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for p in path.strip('/').split('/'):
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tree = tree[p]
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scan_git_tree(tree)
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if __name__ == '__main__':
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ap = ArgumentParser(description='SPDX expression checker')
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ap.add_argument('path', nargs='*', help='Check path or file. If not given full git tree scan. For stdin use "-"')
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ap.add_argument('-m', '--maxlines', type=int, default=15,
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help='Maximum number of lines to scan in a file. Default 15')
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ap.add_argument('-v', '--verbose', action='store_true', help='Verbose statistics output')
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args = ap.parse_args()
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# Sanity check path arguments
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if '-' in args.path and len(args.path) > 1:
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sys.stderr.write('stdin input "-" must be the only path argument\n')
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sys.exit(1)
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try:
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# Use git to get the valid license expressions
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repo = git.Repo(os.getcwd())
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assert not repo.bare
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# Initialize SPDX data
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spdx = read_spdxdata(repo)
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# Initilize the parser
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parser = id_parser(spdx)
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except SPDXException as se:
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if se.el:
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sys.stderr.write('%s: %s\n' %(se.el.path, se.txt))
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else:
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sys.stderr.write('%s\n' %se.txt)
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sys.exit(1)
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except Exception as ex:
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sys.stderr.write('FAIL: %s\n' %ex)
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sys.stderr.write('%s\n' %traceback.format_exc())
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sys.exit(1)
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try:
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if len(args.path) and args.path[0] == '-':
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stdin = os.fdopen(sys.stdin.fileno(), 'rb')
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parser.parse_lines(stdin, args.maxlines, '-')
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else:
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if args.path:
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for p in args.path:
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if os.path.isfile(p):
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parser.parse_lines(open(p, 'rb'), args.maxlines, p)
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elif os.path.isdir(p):
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scan_git_subtree(repo.head.reference.commit.tree, p)
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else:
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sys.stderr.write('path %s does not exist\n' %p)
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sys.exit(1)
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else:
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# Full git tree scan
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scan_git_tree(repo.head.commit.tree)
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if args.verbose:
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sys.stderr.write('\n')
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sys.stderr.write('License files: %12d\n' %spdx.license_files)
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sys.stderr.write('Exception files: %12d\n' %spdx.exception_files)
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sys.stderr.write('License IDs %12d\n' %len(spdx.licenses))
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sys.stderr.write('Exception IDs %12d\n' %len(spdx.exceptions))
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sys.stderr.write('\n')
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sys.stderr.write('Files checked: %12d\n' %parser.checked)
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sys.stderr.write('Lines checked: %12d\n' %parser.lines_checked)
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sys.stderr.write('Files with SPDX: %12d\n' %parser.spdx_valid)
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sys.stderr.write('Files with errors: %12d\n' %parser.spdx_errors)
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sys.exit(0)
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except Exception as ex:
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sys.stderr.write('FAIL: %s\n' %ex)
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sys.stderr.write('%s\n' %traceback.format_exc())
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sys.exit(1)
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