285 строки
9.4 KiB
Python
Executable File
285 строки
9.4 KiB
Python
Executable File
#!/usr/bin/env python
|
|
# SPDX-License-Identifier: GPL-2.0
|
|
# Copyright Thomas Gleixner <tglx@linutronix.de>
|
|
|
|
from argparse import ArgumentParser
|
|
from ply import lex, yacc
|
|
import locale
|
|
import traceback
|
|
import sys
|
|
import git
|
|
import re
|
|
import os
|
|
|
|
class ParserException(Exception):
|
|
def __init__(self, tok, txt):
|
|
self.tok = tok
|
|
self.txt = txt
|
|
|
|
class SPDXException(Exception):
|
|
def __init__(self, el, txt):
|
|
self.el = el
|
|
self.txt = txt
|
|
|
|
class SPDXdata(object):
|
|
def __init__(self):
|
|
self.license_files = 0
|
|
self.exception_files = 0
|
|
self.licenses = [ ]
|
|
self.exceptions = { }
|
|
|
|
# Read the spdx data from the LICENSES directory
|
|
def read_spdxdata(repo):
|
|
|
|
# The subdirectories of LICENSES in the kernel source
|
|
license_dirs = [ "preferred", "other", "exceptions" ]
|
|
lictree = repo.head.commit.tree['LICENSES']
|
|
|
|
spdx = SPDXdata()
|
|
|
|
for d in license_dirs:
|
|
for el in lictree[d].traverse():
|
|
if not os.path.isfile(el.path):
|
|
continue
|
|
|
|
exception = None
|
|
for l in open(el.path).readlines():
|
|
if l.startswith('Valid-License-Identifier:'):
|
|
lid = l.split(':')[1].strip().upper()
|
|
if lid in spdx.licenses:
|
|
raise SPDXException(el, 'Duplicate License Identifier: %s' %lid)
|
|
else:
|
|
spdx.licenses.append(lid)
|
|
|
|
elif l.startswith('SPDX-Exception-Identifier:'):
|
|
exception = l.split(':')[1].strip().upper()
|
|
spdx.exceptions[exception] = []
|
|
|
|
elif l.startswith('SPDX-Licenses:'):
|
|
for lic in l.split(':')[1].upper().strip().replace(' ', '').replace('\t', '').split(','):
|
|
if not lic in spdx.licenses:
|
|
raise SPDXException(None, 'Exception %s missing license %s' %(ex, lic))
|
|
spdx.exceptions[exception].append(lic)
|
|
|
|
elif l.startswith("License-Text:"):
|
|
if exception:
|
|
if not len(spdx.exceptions[exception]):
|
|
raise SPDXException(el, 'Exception %s is missing SPDX-Licenses' %excid)
|
|
spdx.exception_files += 1
|
|
else:
|
|
spdx.license_files += 1
|
|
break
|
|
return spdx
|
|
|
|
class id_parser(object):
|
|
|
|
reserved = [ 'AND', 'OR', 'WITH' ]
|
|
tokens = [ 'LPAR', 'RPAR', 'ID', 'EXC' ] + reserved
|
|
|
|
precedence = ( ('nonassoc', 'AND', 'OR'), )
|
|
|
|
t_ignore = ' \t'
|
|
|
|
def __init__(self, spdx):
|
|
self.spdx = spdx
|
|
self.lasttok = None
|
|
self.lastid = None
|
|
self.lexer = lex.lex(module = self, reflags = re.UNICODE)
|
|
# Initialize the parser. No debug file and no parser rules stored on disk
|
|
# The rules are small enough to be generated on the fly
|
|
self.parser = yacc.yacc(module = self, write_tables = False, debug = False)
|
|
self.lines_checked = 0
|
|
self.checked = 0
|
|
self.spdx_valid = 0
|
|
self.spdx_errors = 0
|
|
self.curline = 0
|
|
self.deepest = 0
|
|
|
|
# Validate License and Exception IDs
|
|
def validate(self, tok):
|
|
id = tok.value.upper()
|
|
if tok.type == 'ID':
|
|
if not id in self.spdx.licenses:
|
|
raise ParserException(tok, 'Invalid License ID')
|
|
self.lastid = id
|
|
elif tok.type == 'EXC':
|
|
if id not in self.spdx.exceptions:
|
|
raise ParserException(tok, 'Invalid Exception ID')
|
|
if self.lastid not in self.spdx.exceptions[id]:
|
|
raise ParserException(tok, 'Exception not valid for license %s' %self.lastid)
|
|
self.lastid = None
|
|
elif tok.type != 'WITH':
|
|
self.lastid = None
|
|
|
|
# Lexer functions
|
|
def t_RPAR(self, tok):
|
|
r'\)'
|
|
self.lasttok = tok.type
|
|
return tok
|
|
|
|
def t_LPAR(self, tok):
|
|
r'\('
|
|
self.lasttok = tok.type
|
|
return tok
|
|
|
|
def t_ID(self, tok):
|
|
r'[A-Za-z.0-9\-+]+'
|
|
|
|
if self.lasttok == 'EXC':
|
|
print(tok)
|
|
raise ParserException(tok, 'Missing parentheses')
|
|
|
|
tok.value = tok.value.strip()
|
|
val = tok.value.upper()
|
|
|
|
if val in self.reserved:
|
|
tok.type = val
|
|
elif self.lasttok == 'WITH':
|
|
tok.type = 'EXC'
|
|
|
|
self.lasttok = tok.type
|
|
self.validate(tok)
|
|
return tok
|
|
|
|
def t_error(self, tok):
|
|
raise ParserException(tok, 'Invalid token')
|
|
|
|
def p_expr(self, p):
|
|
'''expr : ID
|
|
| ID WITH EXC
|
|
| expr AND expr
|
|
| expr OR expr
|
|
| LPAR expr RPAR'''
|
|
pass
|
|
|
|
def p_error(self, p):
|
|
if not p:
|
|
raise ParserException(None, 'Unfinished license expression')
|
|
else:
|
|
raise ParserException(p, 'Syntax error')
|
|
|
|
def parse(self, expr):
|
|
self.lasttok = None
|
|
self.lastid = None
|
|
self.parser.parse(expr, lexer = self.lexer)
|
|
|
|
def parse_lines(self, fd, maxlines, fname):
|
|
self.checked += 1
|
|
self.curline = 0
|
|
try:
|
|
for line in fd:
|
|
self.curline += 1
|
|
if self.curline > maxlines:
|
|
break
|
|
self.lines_checked += 1
|
|
if line.find("SPDX-License-Identifier:") < 0:
|
|
continue
|
|
expr = line.split(':')[1].replace('*/', '').strip()
|
|
self.parse(expr)
|
|
self.spdx_valid += 1
|
|
#
|
|
# Should we check for more SPDX ids in the same file and
|
|
# complain if there are any?
|
|
#
|
|
break
|
|
|
|
except ParserException as pe:
|
|
if pe.tok:
|
|
col = line.find(expr) + pe.tok.lexpos
|
|
tok = pe.tok.value
|
|
sys.stdout.write('%s: %d:%d %s: %s\n' %(fname, self.curline, col, pe.txt, tok))
|
|
else:
|
|
sys.stdout.write('%s: %d:0 %s\n' %(fname, self.curline, col, pe.txt))
|
|
self.spdx_errors += 1
|
|
|
|
def scan_git_tree(tree):
|
|
for el in tree.traverse():
|
|
# Exclude stuff which would make pointless noise
|
|
# FIXME: Put this somewhere more sensible
|
|
if el.path.startswith("LICENSES"):
|
|
continue
|
|
if el.path.find("license-rules.rst") >= 0:
|
|
continue
|
|
if not os.path.isfile(el.path):
|
|
continue
|
|
with open(el.path, 'rb') as fd:
|
|
parser.parse_lines(fd, args.maxlines, el.path)
|
|
|
|
def scan_git_subtree(tree, path):
|
|
for p in path.strip('/').split('/'):
|
|
tree = tree[p]
|
|
scan_git_tree(tree)
|
|
|
|
if __name__ == '__main__':
|
|
|
|
ap = ArgumentParser(description='SPDX expression checker')
|
|
ap.add_argument('path', nargs='*', help='Check path or file. If not given full git tree scan. For stdin use "-"')
|
|
ap.add_argument('-m', '--maxlines', type=int, default=15,
|
|
help='Maximum number of lines to scan in a file. Default 15')
|
|
ap.add_argument('-v', '--verbose', action='store_true', help='Verbose statistics output')
|
|
args = ap.parse_args()
|
|
|
|
# Sanity check path arguments
|
|
if '-' in args.path and len(args.path) > 1:
|
|
sys.stderr.write('stdin input "-" must be the only path argument\n')
|
|
sys.exit(1)
|
|
|
|
try:
|
|
# Use git to get the valid license expressions
|
|
repo = git.Repo(os.getcwd())
|
|
assert not repo.bare
|
|
|
|
# Initialize SPDX data
|
|
spdx = read_spdxdata(repo)
|
|
|
|
# Initilize the parser
|
|
parser = id_parser(spdx)
|
|
|
|
except SPDXException as se:
|
|
if se.el:
|
|
sys.stderr.write('%s: %s\n' %(se.el.path, se.txt))
|
|
else:
|
|
sys.stderr.write('%s\n' %se.txt)
|
|
sys.exit(1)
|
|
|
|
except Exception as ex:
|
|
sys.stderr.write('FAIL: %s\n' %ex)
|
|
sys.stderr.write('%s\n' %traceback.format_exc())
|
|
sys.exit(1)
|
|
|
|
try:
|
|
if len(args.path) and args.path[0] == '-':
|
|
parser.parse_lines(sys.stdin, args.maxlines, '-')
|
|
else:
|
|
if args.path:
|
|
for p in args.path:
|
|
if os.path.isfile(p):
|
|
parser.parse_lines(open(p), args.maxlines, p)
|
|
elif os.path.isdir(p):
|
|
scan_git_subtree(repo.head.reference.commit.tree, p)
|
|
else:
|
|
sys.stderr.write('path %s does not exist\n' %p)
|
|
sys.exit(1)
|
|
else:
|
|
# Full git tree scan
|
|
scan_git_tree(repo.head.commit.tree)
|
|
|
|
if args.verbose:
|
|
sys.stderr.write('\n')
|
|
sys.stderr.write('License files: %12d\n' %spdx.license_files)
|
|
sys.stderr.write('Exception files: %12d\n' %spdx.exception_files)
|
|
sys.stderr.write('License IDs %12d\n' %len(spdx.licenses))
|
|
sys.stderr.write('Exception IDs %12d\n' %len(spdx.exceptions))
|
|
sys.stderr.write('\n')
|
|
sys.stderr.write('Files checked: %12d\n' %parser.checked)
|
|
sys.stderr.write('Lines checked: %12d\n' %parser.lines_checked)
|
|
sys.stderr.write('Files with SPDX: %12d\n' %parser.spdx_valid)
|
|
sys.stderr.write('Files with errors: %12d\n' %parser.spdx_errors)
|
|
|
|
sys.exit(0)
|
|
|
|
except Exception as ex:
|
|
sys.stderr.write('FAIL: %s\n' %ex)
|
|
sys.stderr.write('%s\n' %traceback.format_exc())
|
|
sys.exit(1)
|