onionshare/desktop/scripts/get-tor.py

350 lines
11 KiB
Python

#!/usr/bin/env python3
import inspect
import os
from re import M
import sys
import hashlib
import shutil
import subprocess
import requests
import click
import tempfile
import gnupg
torbrowser_latest_url = (
"https://aus1.torproject.org/torbrowser/update_3/release/downloads.json"
)
tor_dev_fingerprint = "EF6E286DDA85EA2A4BA7DE684E2C6E8793298290"
# Common paths
root_path = os.path.dirname(
os.path.dirname(os.path.abspath(inspect.getfile(inspect.currentframe())))
)
working_path = os.path.join(root_path, "build", "tor")
def get_latest_tor_version_urls(platform):
r = requests.get(torbrowser_latest_url)
if r.status_code != 200 or platform not in r.json()["downloads"]:
print("Tor browser latest version url not working")
sys.exit(-1)
platform_url = r.json()["downloads"][platform]["ALL"]["binary"]
platform_sig_url = r.json()["downloads"][platform]["ALL"]["sig"]
platform_filename = platform_url.split("/")[-1]
return platform_url, platform_filename, platform_sig_url
def get_tor_windows(gpg, torkey, win_url, win_filename, expected_win_sig):
bin_filenames = ["tor.exe"]
# Build paths
win_path = os.path.join(working_path, win_filename)
win_sig_path = os.path.join(working_path, f"{win_filename}.asc")
dist_path = os.path.join(root_path, "onionshare", "resources", "tor")
# Make sure the working folder exists
if not os.path.exists(working_path):
os.makedirs(working_path)
# Make sure Tor Browser is downloaded
if not os.path.exists(win_path):
print("Downloading {}".format(win_url))
r = requests.get(win_url)
open(win_path, "wb").write(r.content)
# Make sure Tor Browser signature is downloaded
if not os.path.exists(win_sig_path):
print("Downloading {}".format(expected_win_sig))
r = requests.get(expected_win_sig)
open(win_sig_path, "wb").write(r.content)
# Verify the signature
sig_stream = open(win_sig_path, "rb")
verified = gpg.verify_file(sig_stream, win_path)
if not verified.valid or verified.pubkey_fingerprint != tor_dev_fingerprint:
print("ERROR! The tarball verification with the signature failed!")
sys.exit(-1)
print("Tor Browser verification successful!")
# Extract the bits we need from the exe
subprocess.Popen(
[
"7z",
"e",
"-y",
win_path,
"Browser\\TorBrowser\\Tor",
"-o%s" % os.path.join(working_path, "Tor"),
]
).wait()
subprocess.Popen(
[
"7z",
"e",
"-y",
win_path,
"Browser\\TorBrowser\\Data\\Tor\\geoip*",
"-o%s" % os.path.join(working_path, "Data"),
]
).wait()
# Copy into the onionshare resources
if os.path.exists(dist_path):
shutil.rmtree(dist_path)
os.makedirs(dist_path)
for filename in bin_filenames:
shutil.copyfile(
os.path.join(working_path, "Tor", filename),
os.path.join(dist_path, filename),
)
for filename in ["geoip", "geoip6"]:
shutil.copyfile(
os.path.join(working_path, "Data", filename),
os.path.join(dist_path, filename),
)
# Fetch the built-in bridges
update_tor_bridges()
def get_tor_macos(gpg, torkey, macos_url, macos_filename, expected_macos_sig):
# Build paths
dmg_tor_path = os.path.join(
"/Volumes", "Tor Browser", "Tor Browser.app", "Contents"
)
dmg_path = os.path.join(working_path, macos_filename)
dmg_sig_path = os.path.join(working_path, f"{macos_filename}.asc")
dist_path = os.path.join(root_path, "onionshare", "resources", "tor")
if not os.path.exists(dist_path):
os.makedirs(dist_path, exist_ok=True)
# Make sure the working folder exists
if not os.path.exists(working_path):
os.makedirs(working_path)
# Make sure the zip is downloaded
if not os.path.exists(dmg_path):
print("Downloading {}".format(macos_url))
r = requests.get(macos_url)
open(dmg_path, "wb").write(r.content)
# Make sure the signature is downloaded
if not os.path.exists(dmg_sig_path):
print("Downloading {}".format(expected_macos_sig))
r = requests.get(expected_macos_sig)
open(dmg_sig_path, "wb").write(r.content)
# Verify the signature
sig_stream = open(dmg_sig_path, "rb")
verified = gpg.verify_file(sig_stream, dmg_path)
if not verified.valid or verified.pubkey_fingerprint != tor_dev_fingerprint:
print("ERROR! The tarball verification with the signature failed!")
sys.exit(-1)
print("Tor Browser verification successful!")
# Mount the dmg, copy data to the working path
subprocess.call(["hdiutil", "attach", dmg_path])
# Copy into dist
shutil.copyfile(
os.path.join(dmg_tor_path, "Resources", "TorBrowser", "Tor", "geoip"),
os.path.join(dist_path, "geoip"),
)
shutil.copyfile(
os.path.join(dmg_tor_path, "Resources", "TorBrowser", "Tor", "geoip6"),
os.path.join(dist_path, "geoip6"),
)
shutil.copyfile(
os.path.join(dmg_tor_path, "MacOS", "Tor", "tor"),
os.path.join(dist_path, "tor"),
)
os.chmod(os.path.join(dist_path, "tor"), 0o755)
shutil.copyfile(
os.path.join(dmg_tor_path, "MacOS", "Tor", "libevent-2.1.7.dylib"),
os.path.join(dist_path, "libevent-2.1.7.dylib"),
)
# Eject dmg
subprocess.call(["diskutil", "eject", "/Volumes/Tor Browser"])
# Fetch the built-in bridges
update_tor_bridges()
def get_tor_linux64(gpg, torkey, linux64_url, linux64_filename, expected_linux64_sig):
# Build paths
tarball_path = os.path.join(working_path, linux64_filename)
tarball_sig_path = os.path.join(working_path, f"{linux64_filename}.asc")
dist_path = os.path.join(root_path, "onionshare", "resources", "tor")
# Make sure dirs exist
if not os.path.exists(working_path):
os.makedirs(working_path, exist_ok=True)
if not os.path.exists(dist_path):
os.makedirs(dist_path, exist_ok=True)
# Make sure the tarball is downloaded
if not os.path.exists(tarball_path):
print("Downloading {}".format(linux64_url))
r = requests.get(linux64_url)
open(tarball_path, "wb").write(r.content)
# Make sure the signature file is downloaded
if not os.path.exists(tarball_sig_path):
print("Downloading {}".format(expected_linux64_sig))
r = requests.get(expected_linux64_sig)
open(tarball_sig_path, "wb").write(r.content)
# Verify signature
sig_stream = open(tarball_sig_path, "rb")
verified = gpg.verify_file(sig_stream, tarball_path)
if not verified.valid or verified.pubkey_fingerprint != tor_dev_fingerprint:
print("ERROR! The tarball verification with the signature failed!")
sys.exit(-1)
print("Tor Browser verification successful!")
# Delete extracted tarball, if it's there
shutil.rmtree(os.path.join(working_path, "tor-browser"), ignore_errors=True)
# Extract the tarball
subprocess.call(["tar", "-xvf", tarball_path], cwd=working_path)
tarball_tor_path = os.path.join(
working_path, "tor-browser", "Browser", "TorBrowser"
)
# Copy into dist
shutil.copyfile(
os.path.join(tarball_tor_path, "Data", "Tor", "geoip"),
os.path.join(dist_path, "geoip"),
)
shutil.copyfile(
os.path.join(tarball_tor_path, "Data", "Tor", "geoip6"),
os.path.join(dist_path, "geoip6"),
)
shutil.copyfile(
os.path.join(tarball_tor_path, "Tor", "tor"),
os.path.join(dist_path, "tor"),
)
os.chmod(os.path.join(dist_path, "tor"), 0o755)
shutil.copyfile(
os.path.join(tarball_tor_path, "Tor", "libcrypto.so.3"),
os.path.join(dist_path, "libcrypto.so.3"),
)
shutil.copyfile(
os.path.join(tarball_tor_path, "Tor", "libevent-2.1.so.7"),
os.path.join(dist_path, "libevent-2.1.so.7"),
)
shutil.copyfile(
os.path.join(tarball_tor_path, "Tor", "libssl.so.3"),
os.path.join(dist_path, "libssl.so.3"),
)
shutil.copyfile(
os.path.join(tarball_tor_path, "Tor", "libstdc++", "libstdc++.so.6"),
os.path.join(dist_path, "libstdc++.so.6"),
)
print(f"Tor binaries extracted to: {dist_path}")
# Fetch the built-in bridges
update_tor_bridges()
def update_tor_bridges():
"""
Update the built-in Tor Bridges in OnionShare's torrc templates.
"""
torrc_template_dir = os.path.join(
root_path, os.pardir, "cli/onionshare_cli/resources"
)
endpoint = "https://bridges.torproject.org/moat/circumvention/builtin"
r = requests.post(
endpoint,
headers={"Content-Type": "application/vnd.api+json"},
)
if r.status_code != 200:
print(
f"There was a problem fetching the latest built-in bridges: status_code={r.status_code}"
)
sys.exit(1)
result = r.json()
print(f"Built-in bridges: {result}")
if "errors" in result:
print(
f"There was a problem fetching the latest built-in bridges: errors={result['errors']}"
)
sys.exit(1)
for bridge_type in ["meek-azure", "obfs4", "snowflake"]:
if bridge_type in result and result[bridge_type]:
if bridge_type == "meek-azure":
torrc_template_extension = "meek_lite_azure"
else:
torrc_template_extension = bridge_type
torrc_template = os.path.join(
root_path,
torrc_template_dir,
f"torrc_template-{torrc_template_extension}",
)
with open(torrc_template, "w") as f:
f.write(f"# Enable built-in {bridge_type} bridge\n")
bridges = result[bridge_type]
# Sorts the bridges numerically by IP, since they come back in
# random order from the API each time, and create noisy git diff.
bridges.sort(key=lambda s: s.split()[1])
for item in bridges:
f.write(f"Bridge {item}\n")
@click.command()
@click.argument("platform")
def main(platform):
"""
Download Tor Browser and extract tor binaries
"""
valid_platforms = ["win64", "macos", "linux-x86_64"]
if platform not in valid_platforms:
click.echo(f"platform must be one of: {valid_platforms}")
return
(
platform_url,
platform_filename,
expected_platform_sig,
) = get_latest_tor_version_urls(platform)
tmpdir = tempfile.TemporaryDirectory()
gpg = gnupg.GPG(gnupghome=tmpdir.name)
torkey = gpg.import_keys_file(
os.path.join(root_path, "scripts", "tor-browser-devs.gpg")
)
print(f"Imported Tor GPG key: {torkey.fingerprints}")
if platform == "win64":
get_tor_windows(
gpg, torkey, platform_url, platform_filename, expected_platform_sig
)
elif platform == "macos":
get_tor_macos(
gpg, torkey, platform_url, platform_filename, expected_platform_sig
)
elif platform == "linux-x86_64":
get_tor_linux64(
gpg, torkey, platform_url, platform_filename, expected_platform_sig
)
else:
click.echo("invalid platform")
tmpdir.cleanup()
if __name__ == "__main__":
main()