File size: 9,535 Bytes
95f8c4b | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 | """Shared helpers for selecting and launching the Chromium browser backend.
Provides direct Chromium subprocess launching with stealth and performance flags.
"""
from __future__ import annotations
import glob
import hashlib
import logging
import os
import platform
import shutil
import subprocess
from pathlib import Path
from aistudio_api.config import settings
log = logging.getLogger("aistudio.browser")
def _derive_stable_fingerprint_seed(key: str) -> int:
digest = hashlib.sha256(key.encode("utf-8")).hexdigest()
return 10000 + (int(digest[:8], 16) % 90000)
def _is_termux() -> bool:
"""True iff running inside Termux (host or via app)."""
return (
platform.system() == "Android"
or os.environ.get("PREFIX", "").startswith("/data/data/com.termux")
)
def _find_wrapper_path() -> str | None:
project_root = Path(__file__).resolve().parents[4]
wrapper = project_root / "scripts" / "cloakbrowser_termux" / "run-chrome.sh"
if wrapper.is_file() and os.access(wrapper, os.X_OK):
return str(wrapper)
return None
def _resolve_local_chrome(match: str) -> str:
"""Route Termux chrome launches through the proot wrapper.
On Termux the kernel loader cannot run glibc-built CloakBrowser, so the
wrapper re-execs the binary inside ``proot-distro login <container>``.
On every other host we return the binary path unchanged.
"""
if _is_termux():
wrapper = _find_wrapper_path()
if wrapper:
log.debug("Termux host: routing %s through wrapper %s", match, wrapper)
return wrapper
return match
def find_chromium_executable() -> str:
"""Find the best Chromium executable available on the system."""
# 1. Configured explicit path
if settings.browser_executable_path and os.path.exists(
settings.browser_executable_path
):
return settings.browser_executable_path
project_root = Path(__file__).resolve().parents[4]
# 3. Local project-scoped CloakBrowser (.cloakbrowser/**/chrome)
local_cloak_patterns = [
str(project_root / ".cloakbrowser" / "**" / "chrome"),
str(project_root / ".cloakbrowser" / "**" / "Chromium.app" / "Contents" / "MacOS" / "Chromium"),
str(project_root / ".cloakbrowser" / "**" / "chrome.exe"),
]
for pat in local_cloak_patterns:
local_matches = sorted(glob.glob(pat, recursive=True))
if local_matches:
for match in reversed(local_matches):
if os.path.isfile(match) and (os.access(match, os.X_OK) or platform.system() == "Windows"):
return _resolve_local_chrome(match)
# 3. User-level CloakBrowser (~/.cloakbrowser/**/chrome)
user_cloak_patterns = [
os.path.expanduser("~/.cloakbrowser/**/chrome"),
os.path.expanduser("~/.cloakbrowser/**/chrome.exe"),
os.path.expanduser("~/.cloakbrowser/**/Chromium.app/Contents/MacOS/Chromium"),
]
for pat in user_cloak_patterns:
cloak_matches = sorted(glob.glob(pat, recursive=True))
if cloak_matches:
for match in reversed(cloak_matches):
if os.path.isfile(match) and (os.access(match, os.X_OK) or platform.system() == "Windows"):
return _resolve_local_chrome(match)
# 3. Playwright cached Chromium (~/.cache/ms-playwright/chromium-*/chrome-linux/chrome)
pw_matches = sorted(
glob.glob(
os.path.expanduser("~/.cache/ms-playwright/chromium-*/chrome-linux/chrome"),
recursive=True,
)
)
if pw_matches:
for match in reversed(pw_matches):
if os.path.isfile(match) and os.access(match, os.X_OK):
return _resolve_local_chrome(match)
# 4. Standard binary names in PATH
for name in ("chromium-browser", "chromium", "google-chrome", "chrome"):
p = shutil.which(name)
if p and os.access(p, os.X_OK):
return p
# 5. Termux / Linux standard system paths
for p in (
"/data/data/com.termux/files/usr/bin/chromium-browser",
"/usr/bin/chromium-browser",
"/usr/bin/chromium",
"/usr/bin/google-chrome",
):
if os.path.isfile(p) and os.access(p, os.X_OK):
return p
raise FileNotFoundError(
"Could not locate a valid Chromium executable on this system.\n"
"Hint: on Termux run `bash scripts/install_termux_prereqs.sh` to provision\n"
"the proot-distro container with CloakBrowser."
)
def build_chromium_args(
port: int,
user_data_dir: str | None = None,
*,
headless: bool | None = None,
stable_fingerprint_key: str | None = None,
proxy_url: str | None = None,
extra_args: list[str] | None = None,
) -> list[str]:
"""Build optimized mobile/stealth CLI arguments for direct Chromium launch."""
is_headless = settings.browser_headless if headless is None else headless
args: list[str] = [
f"--remote-debugging-port={port}",
"--remote-allow-origins=*",
"--no-first-run",
"--no-default-browser-check",
"--no-sandbox",
"--disable-setuid-sandbox",
"--disable-dev-shm-usage",
"--disable-gpu",
"--disable-gpu-compositing",
"--in-process-gpu",
"--disable-software-rasterizer",
"--renderer-process-limit=1",
"--no-zygote",
"--disable-breakpad",
"--mute-audio",
"--disable-audio",
"--disable-site-isolation-trials",
"--js-flags=--max-old-space-size=128",
"--disk-cache-size=16777216",
"--media-cache-size=1",
"--disable-background-networking",
"--disable-sync",
"--disable-speech-api",
"--disable-component-update",
"--disable-default-apps",
"--force-webrtc-ip-handling-policy=disable_non_proxied_udp",
"--disable-features=Translate,OptimizationHints,MediaRouter,DialLocalDiscovery,PreloadMediaEngagementData,CertificateTransparencyComponentUpdater,SitePerProcess,AudioServiceOutOfProcess",
]
if user_data_dir:
args.append(f"--user-data-dir={user_data_dir}")
if is_headless:
args.extend(
[
"--headless=new",
"--hide-scrollbars",
"--window-size=1280,800",
]
)
else:
args.extend(
[
"--start-maximized",
"--ignore-gpu-blocklist",
]
)
effective_proxy = proxy_url or settings.proxy_url
if effective_proxy:
args.append(f"--proxy-server={effective_proxy}")
fingerprint_seed = (
_derive_stable_fingerprint_seed(stable_fingerprint_key)
if stable_fingerprint_key
else None
)
if fingerprint_seed is not None:
args.append(f"--fingerprint={fingerprint_seed}")
args.append(
"--fingerprint-platform=macos"
if platform.system() == "Darwin"
else "--fingerprint-platform=windows"
)
if extra_args:
args.extend(extra_args)
return args
class ChromiumProcess:
"""Manages lifecycle of a direct Chromium subprocess."""
def __init__(
self,
process: subprocess.Popen[bytes],
port: int,
user_data_dir: str | None = None,
):
self.process = process
self.port = port
self.user_data_dir = user_data_dir
def is_alive(self) -> bool:
return self.process.poll() is None
def terminate(self, timeout_s: float = 3.0) -> None:
"""Terminate the Chromium subprocess tree.
Sends SIGTERM to the entire process group (the wrapper,
``proot-distro login``, and the actual ``chrome`` binary). Falls back
to SIGKILL on the group if anything still lingers. Without
``killpg`` the Termux proot wrapper routinely survives the signal and
leaves an orphan ``chrome`` behind that pins the CDP port.
"""
import signal
if self.process.poll() is not None:
return
try:
pgid = os.getpgid(self.process.pid)
except ProcessLookupError:
return
try:
os.killpg(pgid, signal.SIGTERM)
except ProcessLookupError:
return
try:
self.process.wait(timeout=timeout_s)
except subprocess.TimeoutExpired:
try:
os.killpg(pgid, signal.SIGKILL)
except ProcessLookupError:
pass
self.process.wait(timeout=1.0)
except Exception as e:
log.debug("Error terminating Chromium process: %s", e)
def launch_chromium_process(
port: int,
user_data_dir: str | None = None,
*,
headless: bool | None = None,
extra_args: list[str] | None = None,
) -> ChromiumProcess:
"""Launch Chromium binary directly as a subprocess."""
executable = find_chromium_executable()
if user_data_dir:
Path(user_data_dir).mkdir(parents=True, exist_ok=True)
args = build_chromium_args(
port=port,
user_data_dir=user_data_dir,
headless=headless,
stable_fingerprint_key=user_data_dir,
extra_args=extra_args,
)
cmd = [executable, *args]
log.info("Launching Chromium binary %s on port %d", executable, port)
proc = subprocess.Popen(
cmd,
stdout=subprocess.DEVNULL,
stderr=subprocess.DEVNULL,
start_new_session=True,
)
return ChromiumProcess(proc, port, user_data_dir)
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