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# Copyright 2013 The Servo Project Developers. See the COPYRIGHT
# file at the top-level directory of this distribution.
#
# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
# option. This file may not be copied, modified, or distributed
# except according to those terms.
from __future__ import absolute_import, print_function, unicode_literals
import hashlib
import os
import os.path
import platform
import shutil
from socket import error as socket_error
import stat
from io import BytesIO
import sys
import time
import zipfile
import six.moves.urllib as urllib
try:
from ssl import HAS_SNI
except ImportError:
HAS_SNI = False
HAS_SNI_AND_RECENT_PYTHON = HAS_SNI and sys.version_info >= (2, 7, 9)
def get_static_rust_lang_org_dist():
if HAS_SNI_AND_RECENT_PYTHON:
return "https://static.rust-lang.org/dist"
return "https://static-rust-lang-org.s3.amazonaws.com/dist"
def get_urlopen_kwargs():
# The cafile parameter was added in 2.7.9
if HAS_SNI_AND_RECENT_PYTHON:
import certifi
return {"cafile": certifi.where()}
return {}
def remove_readonly(func, path, _):
"Clear the readonly bit and reattempt the removal"
os.chmod(path, stat.S_IWRITE)
func(path)
def delete(path):
if os.path.isdir(path) and not os.path.islink(path):
shutil.rmtree(path, onerror=remove_readonly)
else:
os.remove(path)
def host_platform():
os_type = platform.system().lower()
if os_type == "linux":
os_type = "unknown-linux-gnu"
elif os_type == "darwin":
os_type = "apple-darwin"
elif os_type == "android":
os_type = "linux-androideabi"
elif os_type == "windows":
os_type = "pc-windows-msvc"
elif os_type == "freebsd":
os_type = "unknown-freebsd"
else:
os_type = "unknown"
return os_type
def host_triple():
os_type = host_platform()
cpu_type = platform.machine().lower()
if cpu_type in ["i386", "i486", "i686", "i768", "x86"]:
cpu_type = "i686"
elif cpu_type in ["x86_64", "x86-64", "x64", "amd64"]:
cpu_type = "x86_64"
elif cpu_type == "arm":
cpu_type = "arm"
elif cpu_type == "aarch64":
cpu_type = "aarch64"
else:
cpu_type = "unknown"
return "{}-{}".format(cpu_type, os_type)
def download(desc, src, writer, start_byte=0):
if start_byte:
print("Resuming download of {} ...".format(src))
else:
print("Downloading {} ...".format(src))
dumb = (os.environ.get("TERM") == "dumb") or (not sys.stdout.isatty())
try:
req = urllib.request.Request(src)
if start_byte:
req = urllib.request.Request(src, headers={'Range': 'bytes={}-'.format(start_byte)})
resp = urllib.request.urlopen(req, **get_urlopen_kwargs())
fsize = None
if resp.info().getheader('Content-Length'):
fsize = int(resp.info().getheader('Content-Length').strip()) + start_byte
recved = start_byte
chunk_size = 64 * 1024
previous_progress_line = None
previous_progress_line_time = 0
while True:
chunk = resp.read(chunk_size)
if not chunk:
break
recved += len(chunk)
if not dumb:
if fsize is not None:
pct = recved * 100.0 / fsize
progress_line = "\rDownloading %s: %5.1f%%" % (desc, pct)
now = time.time()
duration = now - previous_progress_line_time
if progress_line != previous_progress_line and duration > .1:
print(progress_line, end="")
previous_progress_line = progress_line
previous_progress_line_time = now
sys.stdout.flush()
writer.write(chunk)
if not dumb:
print()
except urllib.error.HTTPError as e:
print("Download failed ({}): {} - {}".format(e.code, e.reason, src))
if e.code == 403:
print("No Rust compiler binary available for this platform. "
"Please see https://github.com/servo/servo/#prerequisites")
sys.exit(1)
except urllib.error.URLError as e:
print("Error downloading {}: {}. The failing URL was: {}".format(desc, e.reason, src))
sys.exit(1)
except socket_error as e:
print("Looks like there's a connectivity issue, check your Internet connection. {}".format(e))
sys.exit(1)
except KeyboardInterrupt:
writer.flush()
raise
def download_bytes(desc, src):
content_writer = BytesIO()
download(desc, src, content_writer)
return content_writer.getvalue()
def download_file(desc, src, dst):
tmp_path = dst + ".part"
try:
start_byte = os.path.getsize(tmp_path)
with open(tmp_path, 'ab') as fd:
download(desc, src, fd, start_byte=start_byte)
except os.error:
with open(tmp_path, 'wb') as fd:
download(desc, src, fd)
os.rename(tmp_path, dst)
# https://stackoverflow.com/questions/39296101/python-zipfile-removes-execute-permissions-from-binaries
# In particular, we want the executable bit for executable files.
class ZipFileWithUnixPermissions(zipfile.ZipFile):
def extract(self, member, path=None, pwd=None):
if not isinstance(member, zipfile.ZipInfo):
member = self.getinfo(member)
if path is None:
path = os.getcwd()
extracted = self._extract_member(member, path, pwd)
mode = os.stat(extracted).st_mode
mode |= (member.external_attr >> 16)
os.chmod(extracted, mode)
return extracted
def extract(src, dst, movedir=None, remove=True):
assert src.endswith(".zip")
ZipFileWithUnixPermissions(src).extractall(dst)
if movedir:
for f in os.listdir(movedir):
frm = os.path.join(movedir, f)
to = os.path.join(dst, f)
os.rename(frm, to)
os.rmdir(movedir)
if remove:
os.remove(src)
def check_hash(filename, expected, algorithm):
hasher = hashlib.new(algorithm)
with open(filename, "rb") as f:
while True:
block = f.read(16 * 1024)
if len(block) == 0:
break
hasher.update(block)
if hasher.hexdigest() != expected:
print("Incorrect {} hash for {}".format(algorithm, filename))
sys.exit(1)
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