initial commit

native-host/com.kget_capture.host.json

@@ -0,0 +1,7 @@
+{
+  "name": "com.kget_capture.host",
+  "description": "Native messaging host that hands off download URLs to KGet via D-Bus",
+  "path": "__HOST_SCRIPT_PATH__",
+  "type": "stdio",
+  "allowed_origins": ["chrome-extension://lgkhlfhejbffjnpcdlpjclicihnbjijp/"]
+}

native-host/kget_capture_host.py

@@ -0,0 +1,65 @@
+#!/usr/bin/env python3
+"""Native messaging host bridging Chrome to KGet's D-Bus service."""
+
+import json
+import struct
+import subprocess
+import sys
+
+
+def read_message():
+    raw_length = sys.stdin.buffer.read(4)
+    if len(raw_length) < 4:
+        return None
+    (length,) = struct.unpack("<I", raw_length)
+    data = sys.stdin.buffer.read(length)
+    return json.loads(data)
+
+
+def write_message(message):
+    data = json.dumps(message).encode("utf-8")
+    sys.stdout.buffer.write(struct.pack("<I", len(data)))
+    sys.stdout.buffer.write(data)
+    sys.stdout.buffer.flush()
+
+
+def add_transfer(url):
+    # showNewTransferDialog opens KGet's "New Download" dialog (editable name
+    # and destination) and returns immediately without waiting for the user
+    # to interact with it. addTransfer, by contrast, only returns once the
+    # dialog is dismissed when destDir is empty -- it blocks the D-Bus call
+    # on human input, which is why we don't use it here.
+    cmd = [
+        "dbus-send",
+        "--print-reply",
+        "--reply-timeout=10000",
+        "--dest=org.kde.kget",
+        "/KGet",
+        "org.kde.kget.main.showNewTransferDialog",
+        f"array:string:{url}",
+    ]
+    try:
+        result = subprocess.run(cmd, capture_output=True, text=True, timeout=15)
+    except FileNotFoundError:
+        return False, "dbus-send not found on this system"
+    except subprocess.TimeoutExpired:
+        return False, "dbus-send call timed out (is KGet running?)"
+
+    if result.returncode != 0:
+        stderr = result.stderr.strip()
+        return False, f"dbus-send failed: {stderr or 'unknown error'}"
+    return True, None
+
+
+def main():
+    message = read_message()
+    if not message or message.get("action") != "addTransfer" or "url" not in message:
+        write_message({"ok": False, "error": "invalid request"})
+        return
+
+    ok, error = add_transfer(message["url"])
+    write_message({"ok": True} if ok else {"ok": False, "error": error})
+
+
+if __name__ == "__main__":
+    main()