Add support for multiline input

.github/workflows/package.yml

@@ -0,0 +1,97 @@
+name: package
+on: [push, pull_request]
+jobs:
+  linux_wheels:
+    strategy:
+      matrix:
+        arch: [x86, x86_64, arm64, armhf, mips]
+    runs-on: ubuntu-latest
+    container: ghcr.io/frida/x-tools-linux-${{ matrix.arch }}:latest
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          submodules: recursive
+      - run: cd agents/tracer && npm install && npm run build
+      - run: |
+          LDFLAGS="-L/opt/x-tools/$XTOOLS_HOST/$XTOOLS_HOST/sysroot/usr/lib" CPPFLAGS="-I/opt/x-tools/$XTOOLS_HOST/$XTOOLS_HOST/sysroot/usr/include/python3.10" python3 -m pip install tree_sitter
+      - run: |
+          case ${{ matrix.arch }} in
+            x86)
+              py_arch=i686
+              ;;
+            armhf)
+              py_arch=armv7l
+              ;;
+            arm64)
+              py_arch=aarch64
+              ;;
+            *)
+              py_arch=${{ matrix.arch }}
+              ;;
+          esac
+          case ${{ matrix.arch }} in
+            x86*)
+              py_platform=manylinux_2_5_${py_arch}.manylinux1_${py_arch}
+              ;;
+            arm*|ppc*|s390x)
+              py_platform=manylinux_2_17_${py_arch}.manylinux2014_${py_arch}
+              ;;
+            *)
+              py_platform=manylinux_2_5_${py_arch}
+              ;;
+          esac
+          bdist_wheel_py=/usr/lib/python3/dist-packages/wheel/bdist_wheel.py
+          sed "s/plat_name = plat_name\\.lower()\\.replace('-', '_')\\.replace('.', '_')/plat_name = plat_name.lower().replace('-', '_')/" \
+              $bdist_wheel_py > $bdist_wheel_py.patched
+          if cmp -s $bdist_wheel_py $bdist_wheel_py.patched; then
+            rm -f $bdist_wheel_py.patched
+            echo 'Unable to patch bdist_wheel.py' > /dev/stderr
+            exit 1
+          else
+            mv $bdist_wheel_py.patched $bdist_wheel_py
+          fi
+          export _PYTHON_HOST_PLATFORM=linux-$py_arch
+          echo "plat_name = $py_platform" >> setup.cfg
+          pip wheel -w ./dist --no-deps .
+      - uses: actions/upload-artifact@v3
+        with:
+          name: frida_tools_linux
+          path: dist
+
+  macos_wheels:
+    runs-on: macos-latest
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          submodules: recursive
+      - uses: actions/setup-python@v4
+        with:
+          python-version: '3.10'
+      - run: cd agents/tracer && npm install && npm run build
+      - run: python3 -m pip install wheel
+      - run: python3 -m pip install tree_sitter
+      - run: python3 setup.py bdist_wheel --plat-name=macosx_10_9_x86_64
+      - run: python3 setup.py bdist_wheel --plat-name=macosx_11_0_x86_64
+      - uses: actions/upload-artifact@v3
+        with:
+          name: frida_tools_macos
+          path: dist
+
+  windows_wheels:
+    runs-on: windows-latest
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          submodules: recursive
+      - uses: actions/setup-python@v4
+        with:
+          python-version: '3.10'
+      - run: cd agents/tracer && npm install && npm run build
+      - run: python3 -m pip install wheel
+      - run: python3 -m pip install tree_sitter
+      - run: python3 setup.py bdist_wheel --plat-name=win_amd64
+      - run: python3 setup.py bdist_wheel --plat-name=win32
+      - uses: actions/upload-artifact@v3
+        with:
+          name: frida_tools_windows
+          path: dist

.gitignore

@@ -4,3 +4,4 @@
 /build/
 /dist/
 /frida_tools/*_agent.js
+/frida_tools/treesitter.so

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "vendor/tree-sitter-javascript"]
+	path = vendor/tree-sitter-javascript
+	url = https://github.com/tree-sitter/tree-sitter-javascript

build_aux/build_treesitter.py

@@ -0,0 +1,18 @@
+#!/usr/bin/env python3
+
+import os
+
+from tree_sitter import Language
+
+
+def build() -> None:
+    Language.build_library(
+        os.path.join("frida_tools", "treesitter.so"),
+        [
+            os.path.join("vendor", "tree-sitter-javascript"),
+        ],
+    )
+
+
+if __name__ == "__main__":
+    build()

build_aux/meson.build

@@ -0,0 +1,2 @@
+python = find_program('python3', 'python')
+run_command(python, 'build_treesitter.py')

frida_tools/repl.py

@@ -20,12 +20,14 @@
 from prompt_toolkit import PromptSession
 from prompt_toolkit.completion import CompleteEvent, Completer, Completion
 from prompt_toolkit.document import Document
+from prompt_toolkit.filters import Condition, Filter
 from prompt_toolkit.history import FileHistory
 from prompt_toolkit.lexers import PygmentsLexer
 from prompt_toolkit.shortcuts import prompt
 from prompt_toolkit.styles import Style as PromptToolkitStyle
 from pygments.lexers.javascript import JavascriptLexer
 from pygments.token import Token
+from tree_sitter import Language, Parser
 
 from frida_tools import _repl_magic
 from frida_tools.application import ConsoleApplication
@@ -34,6 +36,13 @@
 
 T = TypeVar("T")
 
+try:
+    JS_LANGUAGE = Language(os.path.join(os.path.dirname(__file__), "treesitter.so"), "javascript")
+    ERROR_QUERY = JS_LANGUAGE.query("(_ (ERROR) @error)")
+except Exception:
+    JS_LANGUAGE = None
+    ERROR_QUERY = None
+
 
 class REPLApplication(ConsoleApplication):
     def __init__(self) -> None:
@@ -53,6 +62,12 @@ def __init__(self) -> None:
 
         super().__init__(self._process_input, self._on_stop)
 
+        try:
+            self._parser = Parser()
+            self._parser.set_language(JS_LANGUAGE)
+        except Exception:
+            self._parser = None
+
         if self._have_terminal and not self._plain_terminal:
             style = PromptToolkitStyle(
                 [
@@ -69,6 +84,7 @@ def __init__(self) -> None:
                 complete_in_thread=True,
                 enable_open_in_editor=True,
                 tempfile_suffix=".js",
+                multiline=self._input_complete(),
             )
             self._dumb_stdin_reader = None
         else:
@@ -339,6 +355,27 @@ def _monitor(self, path: AnyStr) -> None:
         monitor.enable()
         self._monitored_files[path] = monitor
 
+    def _input_complete(self) -> Filter:
+        """
+        check if the current input is a valid javascript code
+        """
+
+        @Condition
+        def inner() -> bool:
+            assert self._cli is not None
+            if self._parser is None or ERROR_QUERY is None:
+                return False
+
+            tree = self._parser.parse(self._cli.default_buffer.document.text.encode())
+            query_results = ERROR_QUERY.captures(tree.root_node)
+            # It would have been nice to be able to query a MISSING node properly but as of when this code was written
+            # it was just not possible. There is an open issue for it in tree-sitter/tree-sitter#606 so maybe one day we
+            # could fix it. I hope it doesn't break some code that contain the work MISSING or something but I checked it
+            # a bit and it seems to be fine.
+            return len(query_results) or "MISSING" in tree.root_node.sexp()
+
+        return inner
+
     def _process_input(self, reactor: Reactor) -> None:
         if not self._quiet:
             self._print_startup_message()

meson.build

@@ -24,3 +24,4 @@ subdir('agents')
 subdir('frida_tools')
 subdir('scripts')
 subdir('completions')
+subdir('build_aux')

setup.cfg

@@ -0,0 +1,2 @@
+[bdist_wheel]
+py_limited_api = cp37

setup.py

@@ -9,6 +9,8 @@
 
 agents = glob.glob(os.path.join(pkg_dir, "*_agent.*"))
 assert len(agents) > 0, "Agents not compiled; run “npm install && npm run build” in agents/*/"
+os.system("python ./build_aux/build_treesitter.py")
+package_data = agents + ["treesitter.so"]
 
 setup(
     name="frida-tools",
@@ -24,6 +26,7 @@
         "frida >= 16.0.0, < 17.0.0",
         "prompt-toolkit >= 2.0.0, < 4.0.0",
         "pygments >= 2.0.2, < 3.0.0",
+        "tree_sitter==0.20.1",
     ],
     license="wxWindows Library Licence, Version 3.1",
     zip_safe=True,
@@ -51,7 +54,7 @@
     ],
     packages=["frida_tools"],
     package_data={
-        "frida_tools": agents,
+        "frida_tools": package_data,
     },
     entry_points={
         "console_scripts": [