From 77196fdcca59768a2f96ab1178570e4bd31fde4a Mon Sep 17 00:00:00 2001
From: Disassembler <disassembler@dasm.cz>
Date: Thu, 3 Oct 2019 12:12:45 +0200
Subject: [PATCH] Rework fix-apk to cover all apk files

---
 build/usr/bin/fix-apk | 123 +++++++++++++++++++++++++++++-------------
 1 file changed, 86 insertions(+), 37 deletions(-)

diff --git a/build/usr/bin/fix-apk b/build/usr/bin/fix-apk
index f241563..20f1570 100755
--- a/build/usr/bin/fix-apk
+++ b/build/usr/bin/fix-apk
@@ -1,45 +1,94 @@
 #!/usr/bin/python3
 # -*- coding: utf-8 -*-
 
+import argparse
 import os
+import shutil
 import sys
+import tarfile
+import tempfile
 
-def fix_installed(layers):
-    installed = []
-    for layer in layers[:-1]:
-        try:
-            with open(os.path.join(layer, 'lib/apk/db/installed'), 'r') as f:
-                buffer = []
-                for line in f:
-                    if line.startswith('C:'):
-                        buffer = ''.join(buffer)
-                        if buffer not in installed:
-                            installed.append(buffer)
-                        buffer = []
-                    buffer.append(line)
-                buffer = ''.join(buffer)
-                if buffer not in installed:
-                    installed.append(buffer)
-        except:
-            continue
-    os.makedirs(os.path.join(layers[-1], 'lib/apk/db'), 0o755, True)
-    with open(os.path.join(layers[-1], 'lib/apk/db/installed'), 'w') as f:
-        f.writelines(installed)
+parser = argparse.ArgumentParser(description='APK database merge script')
+parser.add_argument('layers', help='Path to LXC layers to be merged', nargs=argparse.REMAINDER)
 
-def fix_world(layers):
-    world = []
-    for layer in layers[:-1]:
-        try:
-            with open(os.path.join(layer, 'etc/apk/world'), 'r') as f:
-                for line in f:
-                    if line not in world:
-                        world.append(line)
-        except:
-            continue
-    os.makedirs(os.path.join(layers[-1], 'etc/apk'), 0o755, True)
-    with open(os.path.join(layers[-1], 'etc/apk/world'), 'w') as f:
-        f.writelines(world)
+if len(sys.argv) < 2:
+    parser.print_usage()
+    sys.exit(1)
+args = parser.parse_args()
+layers = args.layers[::-1]
 
-if __name__ == '__main__':
-    fix_installed(sys.argv[1:])
-    fix_world(sys.argv[1:])
+# /etc/apk/world
+world = []
+for layer in layers:
+    try:
+        with open(os.path.join(layer, 'etc/apk/world'), 'r') as f:
+            for line in f:
+                if line not in world:
+                    world.append(line)
+    except:
+        continue
+os.makedirs(os.path.join(layers[-1], 'etc/apk'), 0o755, True)
+with open(os.path.join(layers[-1], 'etc/apk/world'), 'w') as f:
+    f.writelines(world)
+os.chown(os.path.join(layers[-1], 'etc'), 100000, 100000)
+os.chown(os.path.join(layers[-1], 'etc/apk'), 100000, 100000)
+os.chown(os.path.join(layers[-1], 'etc/apk/world'), 100000, 100000)
+
+# /lib/apk/db/installed
+installed = []
+for layer in layers:
+    try:
+        with open(os.path.join(layer, 'lib/apk/db/installed'), 'r') as f:
+            buffer = []
+            for line in f:
+                if line.startswith('C:'):
+                    buffer = ''.join(buffer)
+                    if buffer not in installed:
+                        installed.append(buffer)
+                    buffer = []
+                buffer.append(line)
+            buffer = ''.join(buffer)
+            if buffer not in installed:
+                installed.append(buffer)
+    except:
+        continue
+os.makedirs(os.path.join(layers[-1], 'lib/apk/db'), 0o755, True)
+with open(os.path.join(layers[-1], 'lib/apk/db/installed'), 'w') as f:
+    f.writelines(installed)
+os.chown(os.path.join(layers[-1], 'lib'), 100000, 100000)
+os.chown(os.path.join(layers[-1], 'lib/apk'), 100000, 100000)
+os.chown(os.path.join(layers[-1], 'lib/apk/db'), 100000, 100000)
+os.chown(os.path.join(layers[-1], 'lib/apk/db/installed'), 100000, 100000)
+
+# /lib/apk/db/scripts.tar
+tmp_tar_path = tempfile.mkstemp()[1]
+files_in_tar = []
+with tarfile.open(tmp_tar_path, 'w:') as tmp_tar:
+    for layer in layers:
+        tar_path = os.path.join(layer, 'lib/apk/db/scripts.tar')
+        if os.path.exists(tar_path):
+            with tarfile.open(tar_path, 'r:') as tar:
+                for member in tar.getmembers():
+                    if member.name not in files_in_tar:
+                        buffer = tar.extractfile(member)
+                        tmp_tar.addfile(member, buffer)
+                        files_in_tar.append(member.name)
+if files_in_tar:
+    shutil.move(tmp_tar_path, os.path.join(layers[-1], 'lib/apk/db/scripts.tar'))
+    os.chown(os.path.join(layers[-1], 'lib/apk/db/scripts.tar'), 100000, 100000)
+else:
+    os.unlink(tmp_tar_path)
+
+# /lib/apk/db/triggers
+triggers = []
+for layer in layers:
+    try:
+        with open(os.path.join(layer, 'lib/apk/db/triggers'), 'r') as f:
+            for line in f:
+                if line not in triggers:
+                    triggers.append(line)
+    except:
+        continue
+with open(os.path.join(layers[-1], 'lib/apk/db/triggers'), 'w') as f:
+    f.writelines(triggers)
+os.chown(os.path.join(layers[-1], 'lib/apk/db/triggers'), 100000, 100000)