tools: install local quirks during libinput replay

The quirks for each device are listed in the recording but they may not apply
during libinput replay (e.g. for DMI matches). Work around this by writing out
the local-overrides.quirks file before initializing the devices. This way
we're guaranteed that the device is identical as on the reporter's machine.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

tools/libinput-replay

@@ -28,6 +28,7 @@ import sys
 import time
 import multiprocessing
 import argparse
+from pathlib import Path
 
 try:
     import libevdev
@@ -174,6 +175,43 @@ def loop(args, recording):
         del processes
 
 
+def create_device_quirk(device):
+    quirks = fetch(device, 'quirks')
+    if not quirks:
+        return None
+    # Where the device has a quirk, we match on name, vendor and product.
+    # That's the best match we can assemble here from the info we have.
+    evdev = fetch(device, 'evdev')
+    name = fetch(evdev, 'name')
+    id = fetch(evdev, 'id')
+    quirk = ('[libinput-replay {name}]\n'
+             'MatchName={name}\n'
+             'MatchVendor=0x{id[1]:04X}\n'
+             'MatchProduct=0x{id[2]:04X}\n').format(name=name, id=id)
+    quirk += '\n'.join(quirks)
+    return quirk
+
+
+def setup_quirks(recording):
+    devices = fetch(recording, 'devices')
+    overrides = None
+    quirks = [create_device_quirk(d) for d in devices if fetch(d, 'quirks')]
+    if not quirks:
+        return None
+
+    overrides = Path('/etc/libinput/local-overrides.quirks')
+    if overrides.exists():
+        print('{} exists, please move it out of the way first'.format(overrides), file=sys.stderr)
+        sys.exit(1)
+
+    with overrides.open('w+') as fd:
+        fd.write('# This file was generated by libinput replay\n')
+        fd.write('# Unless libinput replay is running right now, remove this file.\n')
+        fd.write('\n\n'.join(quirks))
+
+    return overrides
+
+
 def check_file(recording):
     version = fetch(recording, 'version')
     if version != SUPPORTED_FILE_VERSION:
@@ -194,10 +232,13 @@ def main():
     parser.add_argument('--verbose', action='store_true')
     args = parser.parse_args()
 
+    quirks_file = None
+
     try:
         with open(args.recording) as f:
             y = yaml.safe_load(f)
-            check_file(recording)
+            check_file(y)
+            quirks_file = setup_quirks(y)
             loop(args, y)
     except KeyboardInterrupt:
         pass
@@ -205,6 +246,9 @@ def main():
         error('Error: failed to open device: {}'.format(e))
     except YamlException as e:
         error('Error: failed to parse recording: {}'.format(e))
+    finally:
+        if quirks_file:
+            quirks_file.unlink()
 
 
 if __name__ == '__main__':