From a7e8eca225a09c08742627af7b0c9bc7db9f44b3 Mon Sep 17 00:00:00 2001
From: Dirk Mueller <dirk@dmllr.de>
Date: Wed, 6 Apr 2016 11:29:40 +0200
Subject: [PATCH] Handle SPDX style license exceptions

---
 TagsCheck.py | 51 ++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 50 insertions(+), 1 deletion(-)

diff --git a/TagsCheck.py b/TagsCheck.py
index f5b7516..ada84f7 100644
--- a/TagsCheck.py
+++ b/TagsCheck.py
@@ -139,6 +139,34 @@ DEFAULT_VALID_LICENSES = (
     'Shareware',
 )
 
+DEFAULT_VALID_LICENSE_EXCEPTIONS = (
+    '389-exception',
+    'Autoconf-exception-2.0',
+    'Autoconf-exception-3.0',
+    'Bison-exception-2.2',
+    'CLISP-exception-2.0',
+    'Classpath-exception-2.0',
+    'DigiRule-FOSS-exception',
+    'FLTK-exception',
+    'Fawkes-Runtime-exception',
+    'Font-exception-2.0',
+    'GCC-exception-2.0',
+    'GCC-exception-3.1',
+    'LZMA-exception',
+    'Libtool-exception',
+    'Nokia-Qt-exception-1.1',
+    'OCCT-exception-1.0',
+    'Qwt-exception-1.0',
+    'WxWindows-exception-3.1',
+    'eCos-exception-2.0',
+    'freertos-exception-2.0',
+    'gnu-javamail-exception',
+    'i2p-gpl-java-exception',
+    'mif-exception',
+    'openvpn-openssl-exception',
+    'u-boot-exception-2.0',
+)
+
 BAD_WORDS = {
     'alot': 'a lot',
     'accesnt': 'accent',
@@ -404,6 +432,7 @@ VALID_GROUPS = Config.getOption('ValidGroups', None)
 if VALID_GROUPS is None:  # get defaults from rpm package only if it's not set
     VALID_GROUPS = Pkg.get_default_valid_rpmgroups()
 VALID_LICENSES = Config.getOption('ValidLicenses', DEFAULT_VALID_LICENSES)
+VALID_LICENSE_EXCEPTIONS = Config.getOption('ValidLicenseExceptions', DEFAULT_VALID_LICENSE_EXCEPTIONS)
 INVALID_REQUIRES = map(re.compile, Config.getOption('InvalidRequires', DEFAULT_INVALID_REQUIRES))
 packager_regex = re.compile(Config.getOption('Packager'))
 changelog_version_regex = re.compile('[^>]([^ >]+)\s*$')
@@ -417,6 +446,7 @@ invalid_url_regex = re.compile(Config.getOption('InvalidURL'), re.IGNORECASE)
 lib_package_regex = re.compile('(?:^(?:compat-)?lib.*?(\.so.*)?|libs?[\d-]*)$', re.IGNORECASE)
 leading_space_regex = re.compile('^\s+')
 license_regex = re.compile('\(([^)]+)\)|\s(?:and|or)\s')
+license_exception_regex = re.compile('(\S+)\sWITH\s(\S+)')
 invalid_version_regex = re.compile('([0-9](?:rc|alpha|beta|pre).*)', re.IGNORECASE)
 # () are here for grouping purpose in the regexp
 forbidden_words_regex = re.compile('(' + Config.getOption('ForbiddenWords') + ')', re.IGNORECASE)
@@ -776,6 +806,10 @@ class TagsCheck(AbstractCheck.AbstractCheck):
 #                 printWarning(pkg, 'package-provides-itself')
 #                 break
 
+        def split_license_exception(license):
+            x, y = license_exception_regex.split(license)[1:3] or (license, "")
+            return x.strip(), y.strip()
+
         def split_license(license):
             return (x.strip() for x in
                     (l for l in license_regex.split(license) if l))
@@ -786,7 +820,17 @@ class TagsCheck(AbstractCheck.AbstractCheck):
         else:
             valid_license = True
             if rpm_license not in VALID_LICENSES:
-                for l1 in split_license(rpm_license):
+                license_string = rpm_license
+
+                l1, lexception = split_license_exception(rpm_license)
+                # SPDX allows "<license> WITH <license-exception>"
+                if lexception:
+                    license_string = l1
+                    if lexception not in VALID_LICENSE_EXCEPTIONS:
+                        printWarning(pkg, 'invalid-license-exception', lexception)
+                        valid_license = False
+
+                for l1 in split_license(license_string):
                     if l1 in VALID_LICENSES:
                         continue
                     for l2 in split_license(l1):
@@ -1062,6 +1106,11 @@ your specfile.''',
 '''The value of the License tag was not recognized.  Known values are:
 "%s".''' % '", "'.join(VALID_LICENSES),
 
+'invalid-license-exception',
+'''The ' WITH <x> ' license exception of the License tag was not recognized.
+Known values are:
+"%s".''' % '", "'.join(VALID_LICENSE_EXCEPTIONS),
+
 'obsolete-not-provided',
 '''If a package is obsoleted by a compatible replacement, the obsoleted package
 should also be provided in order to not cause unnecessary dependency breakage.
-- 
2.7.4