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import atexit
import hashlib
import os
import platform
import re
import stat
import subprocess
import sys
import time
from pathlib import Path
import httpx
from gradio.exceptions import ChecksumMismatchError
VERSION = "0.3"
CURRENT_TUNNELS: list["Tunnel"] = []
machine = platform.machine()
if machine == "x86_64":
machine = "amd64"
elif machine == "aarch64":
machine = "arm64"
BINARY_REMOTE_NAME = f"frpc_{platform.system().lower()}_{machine.lower()}"
EXTENSION = ".exe" if os.name == "nt" else ""
BINARY_URL = f"https://cdn-media.huggingface.co/frpc-gradio-{VERSION}/{BINARY_REMOTE_NAME}{EXTENSION}"
CHECKSUMS = {
"https://cdn-media.huggingface.co/frpc-gradio-0.3/frpc_windows_amd64.exe": "14bc0ea470be5d67d79a07412bd21de8a0a179c6ac1116d7764f68e942dc9ceb",
"https://cdn-media.huggingface.co/frpc-gradio-0.3/frpc_linux_amd64": "c791d1f047b41ff5885772fc4bf20b797c6059bbd82abb9e31de15e55d6a57c4",
"https://cdn-media.huggingface.co/frpc-gradio-0.3/frpc_linux_arm64": "823ced25104de6dc3c9f4798dbb43f20e681207279e6ab89c40e2176ccbf70cd",
"https://cdn-media.huggingface.co/frpc-gradio-0.3/frpc_darwin_amd64": "930f8face3365810ce16689da81b7d1941fda4466225a7bbcbced9a2916a6e15",
"https://cdn-media.huggingface.co/frpc-gradio-0.3/frpc_darwin_arm64": "dfac50c690aca459ed5158fad8bfbe99f9282baf4166cf7c410a6673fbc1f327",
"https://cdn-media.huggingface.co/frpc-gradio-0.3/frpc_linux_arm": "4b563beb2e36c448cc688174e20b53af38dc1ff2b5e362d4ddd1401f2affbfb7",
"https://cdn-media.huggingface.co/frpc-gradio-0.3/frpc_freebsd_386": "cb0a56c764ecf96dd54ed601d240c564f060ee4e58202d65ffca17c1a51ce19c",
"https://cdn-media.huggingface.co/frpc-gradio-0.3/frpc_freebsd_amd64": "516d9e6903513869a011ddcd1ec206167ad1eb5dd6640d21057acc258edecbbb",
"https://cdn-media.huggingface.co/frpc-gradio-0.3/frpc_linux_386": "4c2f2a48cd71571498c0ac8a4d42a055f22cb7f14b4b5a2b0d584220fd60a283",
"https://cdn-media.huggingface.co/frpc-gradio-0.3/frpc_linux_mips": "b309ecd594d4f0f7f33e556a80d4b67aef9319c00a8334648a618e56b23cb9e0",
"https://cdn-media.huggingface.co/frpc-gradio-0.3/frpc_linux_mips64": "0372ef5505baa6f3b64c6295a86541b24b7b0dbe4ef28b344992e21f47624b7b",
"https://cdn-media.huggingface.co/frpc-gradio-0.3/frpc_linux_riscv64": "1658eed7e8c14ea76e1d95749d58441ce24147c3d559381832c725c29cfc3df3",
"https://cdn-media.huggingface.co/frpc-gradio-0.3/frpc_linux_mipsle": "a2aaba16961d3372b79bd7a28976fcd0f0bbaebc2b50d5a7a71af2240747960f",
"https://cdn-media.huggingface.co/frpc-gradio-0.3/frpc_windows_386.exe": "721b90550195a83e15f2176d8f85a48d5a25822757cb872e9723d4bccc4e5bb6",
"https://cdn-media.huggingface.co/frpc-gradio-0.3/frpc_linux_mips64le": "796481edd609f31962b45cc0ab4c9798d040205ae3bf354ed1b72fb432d796b8",
}
CHUNK_SIZE = 128
BINARY_FILENAME = f"{BINARY_REMOTE_NAME}_v{VERSION}"
BINARY_FOLDER = Path(__file__).parent
BINARY_PATH = f"{BINARY_FOLDER / BINARY_FILENAME}"
TUNNEL_TIMEOUT_SECONDS = 30
TUNNEL_ERROR_MESSAGE = (
"Could not create share URL. "
"Please check the appended log from frpc for more information:"
)
CERTIFICATE_PATH = ".gradio/certificate.pem"
class Tunnel:
def __init__(self, remote_host, remote_port, local_host, local_port, share_token):
self.proc = None
self.url = None
self.remote_host = remote_host
self.remote_port = remote_port
self.local_host = local_host
self.local_port = local_port
self.share_token = share_token
@staticmethod
def download_binary():
if not Path(BINARY_PATH).exists():
resp = httpx.get(BINARY_URL, timeout=30)
if resp.status_code == 403:
raise OSError(
f"Cannot set up a share link as this platform is incompatible. Please "
f"create a GitHub issue with information about your platform: {platform.uname()}"
)
resp.raise_for_status()
# Save file data to local copy
with open(BINARY_PATH, "wb") as file:
file.write(resp.content)
st = os.stat(BINARY_PATH)
os.chmod(BINARY_PATH, st.st_mode | stat.S_IEXEC)
if BINARY_URL in CHECKSUMS:
sha = hashlib.sha256()
with open(BINARY_PATH, "rb") as f:
for chunk in iter(lambda: f.read(CHUNK_SIZE * sha.block_size), b""):
sha.update(chunk)
calculated_hash = sha.hexdigest()
if calculated_hash != CHECKSUMS[BINARY_URL]:
raise ChecksumMismatchError()
def start_tunnel(self) -> str:
self.download_binary()
self.url = self._start_tunnel(BINARY_PATH)
return self.url
def kill(self):
if self.proc is not None:
print(f"Killing tunnel {self.local_host}:{self.local_port} <> {self.url}")
self.proc.terminate()
self.proc = None
def _start_tunnel(self, binary: str) -> str:
CURRENT_TUNNELS.append(self)
command = [
binary,
"http",
"-n",
self.share_token,
"-l",
str(self.local_port),
"-i",
self.local_host,
"--uc",
"--sd",
"random",
"--ue",
"--server_addr",
f"{self.remote_host}:{self.remote_port}",
"--disable_log_color",
"--tls_enable",
"--tls_trusted_ca_file",
CERTIFICATE_PATH,
]
self.proc = subprocess.Popen(
command, stdout=subprocess.PIPE, stderr=subprocess.PIPE
)
atexit.register(self.kill)
return self._read_url_from_tunnel_stream()
def _read_url_from_tunnel_stream(self) -> str:
start_timestamp = time.time()
log = []
url = ""
def _raise_tunnel_error():
log_text = "\n".join(log)
print(log_text, file=sys.stderr)
raise ValueError(f"{TUNNEL_ERROR_MESSAGE}\n{log_text}")
while url == "":
# check for timeout and log
if time.time() - start_timestamp >= TUNNEL_TIMEOUT_SECONDS:
_raise_tunnel_error()
assert self.proc is not None # noqa: S101
if self.proc.stdout is None:
continue
line = self.proc.stdout.readline()
line = line.decode("utf-8")
if line == "":
continue
log.append(line.strip())
if "start proxy success" in line:
result = re.search("start proxy success: (.+)\n", line)
if result is None:
_raise_tunnel_error()
else:
url = result.group(1)
elif "login to server failed" in line:
_raise_tunnel_error()
return url
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