From dac66d35228054ed93df79c8e97d17620eb3b355 Mon Sep 17 00:00:00 2001
From: Jon Turney <jon.turney@dronecode.org.uk>
Date: Mon, 24 Apr 2023 14:37:09 +0100
Subject: Add a tool for fixing requires by linkage

---
 calm/fix-requires-by-linkage.py | 141 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 141 insertions(+)
 create mode 100644 calm/fix-requires-by-linkage.py

diff --git a/calm/fix-requires-by-linkage.py b/calm/fix-requires-by-linkage.py
new file mode 100644
index 0000000..9f50c29
--- /dev/null
+++ b/calm/fix-requires-by-linkage.py
@@ -0,0 +1,141 @@
+#!/usr/bin/env python3
+#
+# Copyright (c) 2023 Jon Turney
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+#
+
+import argparse
+import logging
+import os
+import re
+import shutil
+import subprocess
+import sys
+import tarfile
+import tempfile
+
+import xtarfile
+
+from . import common_constants
+from . import hint
+
+#
+#
+#
+
+
+def fix_one_hint(args, dirpath, hintfile, tf):
+    pn = os.path.join(dirpath, hintfile)
+
+    hints = hint.hint_file_parse(pn, hint.pvr)
+
+    hints.pop('parse-warnings', None)
+    if 'parse-errors' in hints:
+        logging.error('invalid hints %s' % hintfile)
+        return
+
+    modified = False
+
+    requires = hints.get('requires', '').split()
+    if requires:
+        # requires is already present?
+        if args.requires in requires:
+            return
+
+    # check if this package installs linked the specified DLL, and if
+    # so, add to the requires, if not already present
+    exe = False
+
+    try:
+        with xtarfile.open(os.path.join(dirpath, tf), mode='r') as a:
+            for m in a.getmembers():
+                if re.search(r'\.(exe|dll)$', m.name):
+                    logging.info('Found executable %s' % m.name)
+                    a.extract(m)
+
+                    result = subprocess.run(['objdump', '-p', m.name], stdout=subprocess.PIPE, text=True)
+                    if ('DLL Name: %s' % args.dll) in result.stdout:
+                        exe = True
+
+                    os.remove(m.name)
+
+    except tarfile.ReadError:
+        pass
+
+    if exe:
+        requires = hints.get('requires', '').split()
+        if args.requires not in requires:
+            requires.append(args.requires)
+            requires = sorted(requires)
+            modified = True
+            logging.warning("adding %s to requires in %s" % (args.requires, hintfile))
+        hints['requires'] = ' '.join(requires)
+
+    if not modified:
+        return
+
+    # write updated hints
+    shutil.copy2(pn, pn + '.bak')
+    hint.hint_file_write(pn, hints)
+    # os.system('/usr/bin/diff -uBZ %s %s' % (pn + '.bak', pn))
+
+
+def fix_hints(args):
+    for (dirpath, _subdirs, files) in os.walk(args.relarea):
+        for f in files:
+            match = re.match(r'^([^-].*?)\.tar' + common_constants.PACKAGE_COMPRESSIONS_RE + r'$', f)
+            if match:
+                root = match.group(1)
+                if root.endswith('-src'):
+                    continue
+
+                pn = root.rsplit('-', 2)[0]
+
+                if pn not in args.package:
+                    continue
+
+                logging.info('Checking %s' % root)
+
+                fix_one_hint(args, dirpath, root + '.hint', f)
+
+#
+#
+#
+
+
+if __name__ == "__main__":
+    relarea_default = common_constants.FTP
+
+    parser = argparse.ArgumentParser(description='Add DEPATOM to requires: of packages which contain an executable linked with DLL')
+    parser.add_argument('dll', metavar='DLL', help='DLL to check for linkage')
+    parser.add_argument('requires', metavar='DEPATOM', help='require to add')
+    parser.add_argument('package', metavar='PACKAGE', action='extend', nargs='+', help='packages to check')
+    parser.add_argument('-v', '--verbose', action='count', dest='verbose', help='verbose output', default=0)
+    parser.add_argument('--releasearea', action='store', metavar='DIR', help="release directory (default: " + relarea_default + ")", default=relarea_default, dest='relarea')
+    (args) = parser.parse_args()
+
+    if args.verbose:
+        logging.getLogger().setLevel(logging.INFO)
+
+    logging.basicConfig(format=os.path.basename(sys.argv[0]) + ': %(message)s')
+
+    with tempfile.TemporaryDirectory() as tempdir:
+        os.chdir(tempdir)
+        fix_hints(args)
-- 
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