tools/checklicenses/checklicenses.py

   1 #!/usr/bin/env python
   2 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
   3 # Use of this source code is governed by a BSD-style license that can be
   4 # found in the LICENSE file.
   5
   6 """Makes sure that all files contain proper licensing information."""
   7
   8
   9 import json
  10 import optparse
  11 import os.path
  12 import subprocess
  13 import sys
  14
  15
  16 def PrintUsage():
  17   print """Usage: python checklicenses.py [--root <root>] [tocheck]
  18   --root   Specifies the repository root. This defaults to "../.." relative
  19            to the script file. This will be correct given the normal location
  20            of the script in "<root>/tools/checklicenses".
  21
  22   --ignore-suppressions  Ignores path-specific license whitelist. Useful when
  23                          trying to remove a suppression/whitelist entry.
  24
  25   tocheck  Specifies the directory, relative to root, to check. This defaults
  26            to "." so it checks everything.
  27
  28 Examples:
  29   python checklicenses.py
  30   python checklicenses.py --root ~/chromium/src third_party"""
  31
  32
  33 WHITELISTED_LICENSES = [
  34     'Anti-Grain Geometry',
  35     'Apache (v2.0)',
  36     'Apache (v2.0) BSD (2 clause)',
  37     'Apache (v2.0) GPL (v2)',
  38     'Apple MIT',  # https://fedoraproject.org/wiki/Licensing/Apple_MIT_License
  39     'APSL (v2)',
  40     'APSL (v2) BSD (4 clause)',
  41     'BSD',
  42     'BSD (2 clause)',
  43     'BSD (2 clause) ISC',
  44     'BSD (2 clause) MIT/X11 (BSD like)',
  45     'BSD (3 clause)',
  46     'BSD (3 clause) GPL (v2)',
  47     'BSD (3 clause) ISC',
  48     'BSD (3 clause) LGPL (v2 or later)',
  49     'BSD (3 clause) LGPL (v2.1 or later)',
  50     'BSD (3 clause) MIT/X11 (BSD like)',
  51     'BSD (4 clause)',
  52     'BSD-like',
  53
  54     # TODO(phajdan.jr): Make licensecheck not print BSD-like twice.
  55     'BSD-like MIT/X11 (BSD like)',
  56
  57     'BSL (v1.0)',
  58     'FreeType (BSD like)',
  59     'FreeType (BSD like) with patent clause',
  60     'GPL (v2) LGPL (v2.1 or later)',
  61     'GPL (v2 or later) with Bison parser exception',
  62     'GPL (v2 or later) with libtool exception',
  63     'GPL (v3 or later) with Bison parser exception',
  64     'GPL with Bison parser exception',
  65     'Independent JPEG Group License',
  66     'ISC',
  67     'LGPL (unversioned/unknown version)',
  68     'LGPL (v2)',
  69     'LGPL (v2 or later)',
  70     'LGPL (v2.1)',
  71     'LGPL (v2.1 or later)',
  72     'LGPL (v3 or later)',
  73     'MIT/X11 (BSD like)',
  74     'MIT/X11 (BSD like) LGPL (v2.1 or later)',
  75     'MPL (v1.0) LGPL (v2 or later)',
  76     'MPL (v1.1)',
  77     'MPL (v1.1) BSD (3 clause) GPL (v2) LGPL (v2.1 or later)',
  78     'MPL (v1.1) BSD (3 clause) LGPL (v2.1 or later)',
  79     'MPL (v1.1) BSD-like',
  80     'MPL (v1.1) BSD-like GPL (unversioned/unknown version)',
  81     'MPL (v1.1) BSD-like GPL (v2) LGPL (v2.1 or later)',
  82     'MPL (v1.1) GPL (v2)',
  83     'MPL (v1.1) GPL (v2) LGPL (v2 or later)',
  84     'MPL (v1.1) GPL (v2) LGPL (v2.1 or later)',
  85     'MPL (v1.1) GPL (unversioned/unknown version)',
  86     'MPL (v1.1) LGPL (v2 or later)',
  87     'MPL (v1.1) LGPL (v2.1 or later)',
  88     'MPL (v2.0)',
  89     'Ms-PL',
  90     'Public domain',
  91     'Public domain BSD',
  92     'Public domain BSD (3 clause)',
  93     'Public domain BSD-like',
  94     'Public domain LGPL (v2.1 or later)',
  95     'libpng',
  96     'zlib/libpng',
  97     'SGI Free Software License B',
  98     'SunSoft (BSD like)',
  99     'University of Illinois/NCSA Open Source License (BSD like)',
 100     ('University of Illinois/NCSA Open Source License (BSD like) '
 101      'MIT/X11 (BSD like)'),
 102 ]
 103
 104
 105 PATH_SPECIFIC_WHITELISTED_LICENSES = {
 106     'base/third_party/icu': [  # http://crbug.com/98087
 107         'UNKNOWN',
 108     ],
 109
 110     # http://code.google.com/p/google-breakpad/issues/detail?id=450
 111     'breakpad/src': [
 112         'UNKNOWN',
 113     ],
 114
 115     'buildtools/third_party/libc++/trunk/test': [
 116         # http://llvm.org/bugs/show_bug.cgi?id=18291
 117         'UNKNOWN',
 118     ],
 119
 120     'chrome/common/extensions/docs/examples': [  # http://crbug.com/98092
 121         'UNKNOWN',
 122     ],
 123     # This contains files copied from elsewhere from the tree. Since the copied
 124     # directories might have suppressions below (like simplejson), whitelist the
 125     # whole directory. This is also not shipped code.
 126     'chrome/common/extensions/docs/server2/third_party': [
 127         'UNKNOWN',
 128     ],
 129     'courgette/third_party/bsdiff_create.cc': [  # http://crbug.com/98095
 130         'UNKNOWN',
 131     ],
 132     'courgette/third_party/qsufsort.h': [  # http://crbug.com/98095
 133         'UNKNOWN',
 134     ],
 135     'native_client': [  # http://crbug.com/98099
 136         'UNKNOWN',
 137     ],
 138     'native_client/toolchain': [
 139         'BSD GPL (v2 or later)',
 140         'BSD MIT/X11 (BSD like)',
 141         'BSD (2 clause) GPL (v2 or later)',
 142         'BSD (3 clause) GPL (v2 or later)',
 143         'BSD (4 clause) ISC',
 144         'BSL (v1.0) GPL',
 145         'BSL (v1.0) GPL (v3.1)',
 146         'GPL',
 147         'GPL (unversioned/unknown version)',
 148         'GPL (v2)',
 149         'GPL (v2 or later)',
 150         'GPL (v3.1)',
 151         'GPL (v3 or later)',
 152         'MPL (v1.1) LGPL (unversioned/unknown version)',
 153     ],
 154     'third_party/WebKit': [
 155         'UNKNOWN',
 156     ],
 157
 158     # http://code.google.com/p/angleproject/issues/detail?id=217
 159     'third_party/angle': [
 160         'UNKNOWN',
 161     ],
 162
 163     # http://crbug.com/222828
 164     # http://bugs.python.org/issue17514
 165     'third_party/chromite/third_party/argparse.py': [
 166         'UNKNOWN',
 167     ],
 168
 169     # http://crbug.com/326117
 170     # https://bitbucket.org/chrisatlee/poster/issue/21
 171     'third_party/chromite/third_party/poster': [
 172         'UNKNOWN',
 173     ],
 174
 175     # http://crbug.com/333508
 176     'third_party/clang_format/script': [
 177         'UNKNOWN',
 178     ],
 179
 180     # http://crbug.com/333508
 181     'buildtools/clang_format/script': [
 182         'UNKNOWN',
 183     ],
 184
 185     # https://mail.python.org/pipermail/cython-devel/2014-July/004062.html
 186     'third_party/cython': [
 187         'UNKNOWN',
 188     ],
 189
 190     'third_party/devscripts': [
 191         'GPL (v2 or later)',
 192     ],
 193     'third_party/catapult/tracing/third_party/devscripts': [
 194         'GPL (v2 or later)',
 195     ],
 196
 197     # https://github.com/shazow/apiclient/issues/8
 198     # MIT license.
 199     'third_party/catapult/third_party/apiclient': [
 200         'UNKNOWN',
 201     ],
 202     'third_party/catapult/dashboard/third_party/apiclient': [
 203         'UNKNOWN',
 204     ],
 205
 206     # https://bugs.launchpad.net/beautifulsoup/+bug/1481316
 207     # MIT license.
 208     'third_party/catapult/third_party/beautifulsoup': [
 209         'UNKNOWN'
 210     ],
 211     'third_party/catapult/dashboard/third_party/beautifulsoup': [
 212         'UNKNOWN'
 213     ],
 214
 215     # https://code.google.com/p/graphy/issues/detail?id=6
 216     # Apache (v2.0)
 217     'third_party/catapult/third_party/graphy': [
 218         'UNKNOWN',
 219     ],
 220     'third_party/catapult/dashboard/third_party/graphy': [
 221         'UNKNOWN',
 222     ],
 223
 224     # https://github.com/html5lib/html5lib-python/issues/125
 225     # MIT license.
 226     'third_party/catapult/third_party/html5lib-python': [
 227         'UNKNOWN',
 228     ],
 229
 230     # https://github.com/jcgregorio/httplib2/issues/307
 231     # MIT license.
 232     'third_party/catapult/third_party/httplib2': [
 233         'UNKNOWN',
 234     ],
 235     'third_party/catapult/dashboard/third_party/httplib2': [
 236         'UNKNOWN',
 237     ],
 238
 239     # https://github.com/GoogleCloudPlatform/appengine-mapreduce/issues/71
 240     # Apache (v2.0)
 241     'third_party/catapult/third_party/mapreduce': [
 242         'UNKNOWN',
 243     ],
 244     'third_party/catapult/dashboard/third_party/mapreduce': [
 245         'UNKNOWN',
 246     ],
 247
 248     # https://code.google.com/p/webapp-improved/issues/detail?id=103
 249     # Apache (v2.0).
 250     'third_party/catapult/third_party/webapp2': [
 251         'UNKNOWN',
 252     ],
 253     'third_party/catapult/dashboard/third_party/webapp2': [
 254         'UNKNOWN',
 255     ],
 256
 257     # https://github.com/Pylons/webob/issues/211
 258     # MIT license.
 259     'third_party/catapult/third_party/WebOb': [
 260         'UNKNOWN',
 261     ],
 262     'third_party/catapult/dashboard/third_party/WebOb': [
 263         'UNKNOWN',
 264     ],
 265
 266     # https://github.com/Pylons/webtest/issues/141
 267     # MIT license.
 268     'third_party/catapult/third_party/webtest': [
 269         'UNKNOWN',
 270     ],
 271     'third_party/catapult/dashboard/third_party/webtest': [
 272         'UNKNOWN',
 273     ],
 274
 275     # https://bitbucket.org/ianb/paste/issues/12/add-license-headers-to-source-files
 276     # MIT license.
 277     'third_party/catapult/third_party/Paste': [
 278         'UNKNOWN',
 279     ],
 280     'third_party/catapult/dashboard/third_party/Paste': [
 281         'UNKNOWN',
 282     ],
 283
 284     # https://github.com/google/oauth2client/issues/231
 285     # Apache v2.0.
 286     'third_party/catapult/third_party/oauth2client': [
 287         'UNKNOWN',
 288     ],
 289     'third_party/catapult/dashboard/third_party/oauth2client': [
 290         'UNKNOWN',
 291     ],
 292
 293     # https://bitbucket.org/gutworth/six/issues/129/add-license-headers-to-source-files
 294     # MIT license.
 295     'third_party/catapult/third_party/six': [
 296         'UNKNOWN',
 297     ],
 298     'third_party/catapult/dashboard/third_party/six': [
 299         'UNKNOWN',
 300     ],
 301
 302     'third_party/expat/files/lib': [  # http://crbug.com/98121
 303         'UNKNOWN',
 304     ],
 305     'third_party/ffmpeg': [
 306         'GPL',
 307         'GPL (v2)',
 308         'GPL (v2 or later)',
 309         'GPL (v3 or later)',
 310         'UNKNOWN',  # http://crbug.com/98123
 311     ],
 312     'third_party/fontconfig': [
 313         # https://bugs.freedesktop.org/show_bug.cgi?id=73401
 314         'UNKNOWN',
 315     ],
 316     'third_party/freetype2': [ # http://crbug.com/177319
 317         'UNKNOWN',
 318     ],
 319     'third_party/hunspell': [  # http://crbug.com/98134
 320         'UNKNOWN',
 321     ],
 322     'third_party/iccjpeg': [  # http://crbug.com/98137
 323         'UNKNOWN',
 324     ],
 325     'third_party/icu': [  # http://crbug.com/98301
 326         'UNKNOWN',
 327     ],
 328     'third_party/jsoncpp/source': [
 329         # https://github.com/open-source-parsers/jsoncpp/issues/234
 330         'UNKNOWN',
 331     ],
 332     'third_party/junit/src': [
 333         # https://github.com/junit-team/junit/issues/1132
 334         'UNKNOWN',
 335     ],
 336     'third_party/lcov': [  # http://crbug.com/98304
 337         'UNKNOWN',
 338     ],
 339     'third_party/lcov/contrib/galaxy/genflat.pl': [
 340         'GPL (v2 or later)',
 341     ],
 342     'third_party/libevent': [  # http://crbug.com/98309
 343         'UNKNOWN',
 344     ],
 345     'third_party/libjingle/source/talk': [  # http://crbug.com/98310
 346         'UNKNOWN',
 347     ],
 348     'third_party/libjpeg_turbo': [  # http://crbug.com/98314
 349         'UNKNOWN',
 350     ],
 351
 352     # Many liblouis files are mirrored but not used in the NaCl module.
 353     # They are not excluded from the mirror because of lack of infrastructure
 354     # support.  Getting license headers added to the files where missing is
 355     # tracked in https://github.com/liblouis/liblouis/issues/22.
 356     'third_party/liblouis/src': [
 357         'GPL (v3 or later)',
 358         'UNKNOWN',
 359     ],
 360
 361     'third_party/libpng': [  # http://crbug.com/98318
 362         'UNKNOWN',
 363     ],
 364
 365     # The following files lack license headers, but are trivial.
 366     'third_party/libusb/src/libusb/os/poll_posix.h': [
 367         'UNKNOWN',
 368     ],
 369
 370     'third_party/libvpx/source': [  # http://crbug.com/98319
 371         'UNKNOWN',
 372     ],
 373     'third_party/libvpx_new/source': [  # http://crbug.com/98319
 374         'UNKNOWN',
 375     ],
 376     'third_party/libxml': [
 377         'UNKNOWN',
 378     ],
 379     'third_party/libxslt': [
 380         'UNKNOWN',
 381     ],
 382     'third_party/lzma_sdk': [
 383         'UNKNOWN',
 384     ],
 385     'third_party/mesa/src': [
 386         'GPL (v2)',
 387         'GPL (v3 or later)',
 388         'MIT/X11 (BSD like) GPL (v3 or later) with Bison parser exception',
 389         'UNKNOWN',  # http://crbug.com/98450
 390     ],
 391     'third_party/modp_b64': [
 392         'UNKNOWN',
 393     ],
 394     'third_party/openmax_dl/dl' : [
 395         'Khronos Group',
 396     ],
 397     'third_party/openssl': [  # http://crbug.com/98451
 398         'UNKNOWN',
 399     ],
 400     'third_party/boringssl': [
 401         # There are some files in BoringSSL which came from OpenSSL and have no
 402         # license in them. We don't wish to add the license header ourselves
 403         # thus we don't expect to pass license checks.
 404         'UNKNOWN',
 405     ],
 406     'third_party/ots/tools/ttf-checksum.py': [  # http://code.google.com/p/ots/issues/detail?id=2
 407         'UNKNOWN',
 408     ],
 409     'third_party/molokocacao': [  # http://crbug.com/98453
 410         'UNKNOWN',
 411     ],
 412     'third_party/ocmock/OCMock': [  # http://crbug.com/98454
 413         'UNKNOWN',
 414     ],
 415     'third_party/protobuf': [  # http://crbug.com/98455
 416         'UNKNOWN',
 417     ],
 418
 419     # https://bitbucket.org/ned/coveragepy/issue/313/add-license-file-containing-2-3-or-4
 420     # BSD 2-clause license.
 421     'third_party/pycoverage': [
 422         'UNKNOWN',
 423     ],
 424
 425     'third_party/pyelftools': [ # http://crbug.com/222831
 426         'UNKNOWN',
 427     ],
 428     'third_party/scons-2.0.1/engine/SCons': [  # http://crbug.com/98462
 429         'UNKNOWN',
 430     ],
 431     'third_party/simplejson': [
 432         'UNKNOWN',
 433     ],
 434     'third_party/skia': [  # http://crbug.com/98463
 435         'UNKNOWN',
 436     ],
 437     'third_party/snappy/src': [  # http://crbug.com/98464
 438         'UNKNOWN',
 439     ],
 440     'third_party/smhasher/src': [  # http://crbug.com/98465
 441         'UNKNOWN',
 442     ],
 443     'third_party/speech-dispatcher/libspeechd.h': [
 444         'GPL (v2 or later)',
 445     ],
 446     'third_party/sqlite': [
 447         'UNKNOWN',
 448     ],
 449
 450     # http://crbug.com/334668
 451     # MIT license.
 452     'tools/swarming_client/third_party/httplib2': [
 453         'UNKNOWN',
 454     ],
 455
 456     # http://crbug.com/334668
 457     # Apache v2.0.
 458     'tools/swarming_client/third_party/oauth2client': [
 459         'UNKNOWN',
 460     ],
 461
 462     # http://crbug.com/471372
 463     # BSD
 464     'tools/swarming_client/third_party/pyasn1': [
 465         'UNKNOWN',
 466     ],
 467
 468     # http://crbug.com/471372
 469     # Apache v2.0.
 470     'tools/swarming_client/third_party/rsa': [
 471         'UNKNOWN',
 472     ],
 473
 474     # https://github.com/kennethreitz/requests/issues/1610
 475     'tools/swarming_client/third_party/requests': [
 476         'UNKNOWN',
 477     ],
 478
 479     'third_party/talloc': [
 480         'GPL (v3 or later)',
 481         'UNKNOWN',  # http://crbug.com/98588
 482     ],
 483     'third_party/tcmalloc': [
 484         'UNKNOWN',  # http://crbug.com/98589
 485     ],
 486     'third_party/tlslite': [
 487         'UNKNOWN',
 488     ],
 489     'third_party/webdriver': [  # http://crbug.com/98590
 490         'UNKNOWN',
 491     ],
 492
 493     # https://github.com/html5lib/html5lib-python/issues/125
 494     # https://github.com/KhronosGroup/WebGL/issues/435
 495     'third_party/webgl/src': [
 496         'UNKNOWN',
 497     ],
 498
 499     'third_party/webrtc': [  # http://crbug.com/98592
 500         'UNKNOWN',
 501     ],
 502     'third_party/xdg-utils': [  # http://crbug.com/98593
 503         'UNKNOWN',
 504     ],
 505     'third_party/yasm/source': [  # http://crbug.com/98594
 506         'UNKNOWN',
 507     ],
 508     'third_party/zlib/contrib/minizip': [
 509         'UNKNOWN',
 510     ],
 511     'third_party/zlib/trees.h': [
 512         'UNKNOWN',
 513     ],
 514     'tools/emacs': [  # http://crbug.com/98595
 515         'UNKNOWN',
 516     ],
 517     'tools/gyp/test': [
 518         'UNKNOWN',
 519     ],
 520     'tools/python/google/__init__.py': [
 521         'UNKNOWN',
 522     ],
 523     'tools/stats_viewer/Properties/AssemblyInfo.cs': [
 524         'UNKNOWN',
 525     ],
 526     'tools/symsrc/pefile.py': [
 527         'UNKNOWN',
 528     ],
 529     # Not shipped, MIT license but the header files contain no licensing info.
 530     'tools/telemetry/third_party/altgraph': [
 531         'UNKNOWN',
 532     ],
 533     # Not shipped, downloaded on trybots sometimes.
 534     'tools/telemetry/third_party/gsutil': [
 535         'BSD MIT/X11 (BSD like)',
 536         'UNKNOWN',
 537     ],
 538     # Not shipped, MIT license but the header files contain no licensing info.
 539     'tools/telemetry/third_party/modulegraph': [
 540         'UNKNOWN',
 541     ],
 542     'tools/telemetry/third_party/pyserial': [
 543         # https://sourceforge.net/p/pyserial/feature-requests/35/
 544         'UNKNOWN',
 545     ],
 546     'v8/test/cctest': [  # http://crbug.com/98597
 547         'UNKNOWN',
 548     ],
 549     'v8/src/third_party/kernel/tools/perf/util/jitdump.h': [  # http://crbug.com/391716
 550         'UNKNOWN',
 551     ],
 552 }
 553
 554 EXCLUDED_PATHS = [
 555     # Don't check generated files
 556     'out/',
 557
 558     # Don't check sysroot directories
 559     'build/linux/debian_wheezy_amd64-sysroot',
 560     'build/linux/debian_wheezy_arm-sysroot',
 561     'build/linux/debian_wheezy_i386-sysroot',
 562     'build/linux/debian_wheezy_mips-sysroot',
 563 ]
 564
 565
 566 def check_licenses(options, args):
 567   # Figure out which directory we have to check.
 568   if len(args) == 0:
 569     # No directory to check specified, use the repository root.
 570     start_dir = options.base_directory
 571   elif len(args) == 1:
 572     # Directory specified. Start here. It's supposed to be relative to the
 573     # base directory.
 574     start_dir = os.path.abspath(os.path.join(options.base_directory, args[0]))
 575   else:
 576     # More than one argument, we don't handle this.
 577     PrintUsage()
 578     return 1
 579
 580   print "Using base directory:", options.base_directory
 581   print "Checking:", start_dir
 582   print
 583
 584   licensecheck_path = os.path.abspath(os.path.join(options.base_directory,
 585                                                    'third_party',
 586                                                    'devscripts',
 587                                                    'licensecheck.pl'))
 588
 589   licensecheck = subprocess.Popen([licensecheck_path,
 590                                    '-l', '100',
 591                                    '-r', start_dir],
 592                                   stdout=subprocess.PIPE,
 593                                   stderr=subprocess.PIPE)
 594   stdout, stderr = licensecheck.communicate()
 595   if options.verbose:
 596     print '----------- licensecheck stdout -----------'
 597     print stdout
 598     print '--------- end licensecheck stdout ---------'
 599   if licensecheck.returncode != 0 or stderr:
 600     print '----------- licensecheck stderr -----------'
 601     print stderr
 602     print '--------- end licensecheck stderr ---------'
 603     print "\nFAILED\n"
 604     return 1
 605
 606   used_suppressions = set()
 607   errors = []
 608
 609   for line in stdout.splitlines():
 610     filename, license = line.split(':', 1)
 611     filename = os.path.relpath(filename.strip(), options.base_directory)
 612
 613     # Check if the file belongs to one of the excluded paths.
 614     if any((filename.startswith(path) for path in EXCLUDED_PATHS)):
 615       continue
 616
 617     # For now we're just interested in the license.
 618     license = license.replace('*No copyright*', '').strip()
 619
 620     # Skip generated files.
 621     if 'GENERATED FILE' in license:
 622       continue
 623
 624     if license in WHITELISTED_LICENSES:
 625       continue
 626
 627     if not options.ignore_suppressions:
 628       matched_prefixes = [
 629           prefix for prefix in PATH_SPECIFIC_WHITELISTED_LICENSES
 630           if filename.startswith(prefix) and
 631           license in PATH_SPECIFIC_WHITELISTED_LICENSES[prefix]]
 632       if matched_prefixes:
 633         used_suppressions.update(set(matched_prefixes))
 634         continue
 635
 636     errors.append({'filename': filename, 'license': license})
 637
 638   if options.json:
 639     with open(options.json, 'w') as f:
 640       json.dump(errors, f)
 641
 642   if errors:
 643     for error in errors:
 644       print "'%s' has non-whitelisted license '%s'" % (
 645           error['filename'], error['license'])
 646     print "\nFAILED\n"
 647     print "Please read",
 648     print "http://www.chromium.org/developers/adding-3rd-party-libraries"
 649     print "for more info how to handle the failure."
 650     print
 651     print "Please respect OWNERS of checklicenses.py. Changes violating"
 652     print "this requirement may be reverted."
 653
 654     # Do not print unused suppressions so that above message is clearly
 655     # visible and gets proper attention. Too much unrelated output
 656     # would be distracting and make the important points easier to miss.
 657
 658     return 1
 659
 660   print "\nSUCCESS\n"
 661
 662   if not len(args):
 663     unused_suppressions = set(
 664         PATH_SPECIFIC_WHITELISTED_LICENSES.iterkeys()).difference(
 665             used_suppressions)
 666     if unused_suppressions:
 667       print "\nNOTE: unused suppressions detected:\n"
 668       print '\n'.join(unused_suppressions)
 669
 670   return 0
 671
 672
 673 def main():
 674   default_root = os.path.abspath(
 675       os.path.join(os.path.dirname(__file__), '..', '..'))
 676   option_parser = optparse.OptionParser()
 677   option_parser.add_option('--root', default=default_root,
 678                            dest='base_directory',
 679                            help='Specifies the repository root. This defaults '
 680                            'to "../.." relative to the script file, which '
 681                            'will normally be the repository root.')
 682   option_parser.add_option('-v', '--verbose', action='store_true',
 683                            default=False, help='Print debug logging')
 684   option_parser.add_option('--ignore-suppressions',
 685                            action='store_true',
 686                            default=False,
 687                            help='Ignore path-specific license whitelist.')
 688   option_parser.add_option('--json', help='Path to JSON output file')
 689   options, args = option_parser.parse_args()
 690   return check_licenses(options, args)
 691
 692
 693 if '__main__' == __name__:
 694   sys.exit(main())