Move SSH askpass implementation into kitten

shell-integration/ssh/askpass.py

@@ -1,46 +0,0 @@
-#!/usr/bin/env -S kitty +launch
-# License: GPLv3 Copyright: 2022, Kovid Goyal <kovid at kovidgoyal.net>
-
-import json
-import os
-import sys
-import time
-
-from kitty.shm import SharedMemory
-
-msg = sys.argv[-1]
-prompt = os.environ.get('SSH_ASKPASS_PROMPT', '')
-is_confirm = prompt == 'confirm'
-is_fingerprint_check = '(yes/no/[fingerprint])' in msg
-q = {
-    'message': msg,
-    'type': 'confirm' if is_confirm else 'get_line',
-    'is_password': not is_fingerprint_check,
-}
-
-data = json.dumps(q)
-with SharedMemory(
-    size=len(data) + 1 + SharedMemory.num_bytes_for_size, unlink_on_exit=True, prefix=f'askpass-{os.getpid()}-') as shm, \
-        open(os.ctermid(), 'wb') as tty:
-    shm.write(b'\0')
-    shm.write_data_with_size(data)
-    shm.flush()
-    with open(os.ctermid(), 'wb') as f:
-        f.write(f'\x1bP@kitty-ask|{shm.name}\x1b\\'.encode('ascii'))
-        f.flush()
-    while True:
-        # TODO: Replace sleep() with a mutex and condition variable created in the shared memory
-        time.sleep(0.05)
-        shm.seek(0)
-        if shm.read(1) == b'\x01':
-            break
-    response = json.loads(shm.read_data_with_size())
-if is_confirm:
-    response = 'yes' if response else 'no'
-elif is_fingerprint_check:
-    if response.lower() in ('y', 'yes'):
-        response = 'yes'
-    if response.lower() in ('n', 'no'):
-        response = 'no'
-if response:
-    print(response, flush=True)