1 files changed, 82 insertions, 0 deletions
diff --git a/devtools/client/shared/remote-debugging/adb/adb-client.js b/devtools/client/shared/remote-debugging/adb/adb-client.js
new file mode 100644
index 0000000000..ff238d6392
--- /dev/null
+++ b/devtools/client/shared/remote-debugging/adb/adb-client.js
@@ -0,0 +1,82 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/*
+ * A module to track device changes
+ * Adapted from adb.js at
+ * https://github.com/mozilla/adbhelper/tree/f44386c2d8cb7635a7d2c5a51191c89b886f8327
+ */
+
+"use strict";
+
+const {
+  AdbSocket,
+} = require("resource://devtools/client/shared/remote-debugging/adb/adb-socket.js");
+const { dumpn } = require("resource://devtools/shared/DevToolsUtils.js");
+
+const OKAY = 0x59414b4f;
+const FAIL = 0x4c494146;
+
+// Return buffer, which differs between Gecko versions
+function getBuffer(packet) {
+  return packet.buffer ? packet.buffer : packet;
+}
+
+// @param aPacket         The packet to get the length from.
+// @param aIgnoreResponse True if this packet has no OKAY/FAIL.
+// @return                A js object { length:...; data:... }
+function unpackPacket(packet, ignoreResponse) {
+  const buffer = getBuffer(packet);
+  dumpn("Len buffer: " + buffer.byteLength);
+  if (buffer.byteLength === 4 && !ignoreResponse) {
+    dumpn("Packet empty");
+    return { length: 0, data: "" };
+  }
+  const lengthView = new Uint8Array(buffer, ignoreResponse ? 0 : 4, 4);
+  const decoder = new TextDecoder();
+  const length = parseInt(decoder.decode(lengthView), 16);
+  const text = new Uint8Array(buffer, ignoreResponse ? 4 : 8, length);
+  return { length, data: decoder.decode(text) };
+}
+
+// Checks if the response is expected (defaults to OKAY).
+// @return true if response equals expected.
+function checkResponse(packet, expected = OKAY) {
+  const buffer = getBuffer(packet);
+  const view = new Uint32Array(buffer, 0, 1);
+  if (view[0] == FAIL) {
+    dumpn("Response: FAIL");
+  }
+  dumpn("view[0] = " + view[0]);
+  return view[0] == expected;
+}
+
+// @param aCommand A protocol-level command as described in
+//  http://androidxref.com/4.0.4/xref/system/core/adb/OVERVIEW.TXT and
+//  http://androidxref.com/4.0.4/xref/system/core/adb/SERVICES.TXT
+// @return A 8 bit typed array.
+function createRequest(command) {
+  let length = command.length.toString(16).toUpperCase();
+  while (length.length < 4) {
+    length = "0" + length;
+  }
+
+  const encoder = new TextEncoder();
+  dumpn("Created request: " + length + command);
+  return encoder.encode(length + command);
+}
+
+function connect() {
+  return new AdbSocket();
+}
+
+const client = {
+  getBuffer,
+  unpackPacket,
+  checkResponse,
+  createRequest,
+  connect,
+};
+
+module.exports = client;