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# Copyright 2015 The Meson development team
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# http://www.apache.org/licenses/LICENSE-2.0
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from .. import mlog
import urllib.request, os, hashlib, shutil
import subprocess
import sys
try:
import ssl
has_ssl = True
API_ROOT = 'https://wrapdb.mesonbuild.com/v1/'
except ImportError:
has_ssl = False
API_ROOT = 'http://wrapdb.mesonbuild.com/v1/'
ssl_warning_printed = False
def build_ssl_context():
ctx = ssl.SSLContext(ssl.PROTOCOL_SSLv23)
ctx.options |= ssl.OP_NO_SSLv2
ctx.options |= ssl.OP_NO_SSLv3
ctx.verify_mode = ssl.CERT_REQUIRED
ctx.load_default_certs()
return ctx
def open_wrapdburl(urlstring):
global ssl_warning_printed
if has_ssl:
try:
return urllib.request.urlopen(urlstring)#, context=build_ssl_context())
except urllib.error.URLError:
if not ssl_warning_printed:
print('SSL connection failed. Falling back to unencrypted connections.')
ssl_warning_printed = True
if not ssl_warning_printed:
print('Warning: SSL not available, traffic not authenticated.',
file=sys.stderr)
ssl_warning_printed = True
# Trying to open SSL connection to wrapdb fails because the
# certificate is not known.
if urlstring.startswith('https'):
urlstring = 'http' + urlstring[5:]
return urllib.request.urlopen(urlstring)
class PackageDefinition:
def __init__(self, fname):
self.values = {}
ifile = open(fname)
first = ifile.readline().strip()
if first == '[wrap-file]':
self.type = 'file'
elif first == '[wrap-git]':
self.type = 'git'
else:
raise RuntimeError('Invalid format of package file')
for line in ifile:
line = line.strip()
if line == '':
continue
(k, v) = line.split('=', 1)
k = k.strip()
v = v.strip()
self.values[k] = v
def get(self, key):
return self.values[key]
def has_patch(self):
return 'patch_url' in self.values
class Resolver:
def __init__(self, subdir_root):
self.subdir_root = subdir_root
self.cachedir = os.path.join(self.subdir_root, 'packagecache')
def resolve(self, packagename):
fname = os.path.join(self.subdir_root, packagename + '.wrap')
dirname = os.path.join(self.subdir_root, packagename)
if os.path.isdir(dirname):
# The directory is there? Great, use it.
return packagename
if not os.path.isfile(fname):
# No wrap file with this name? Give up.
return None
p = PackageDefinition(fname)
if p.type == 'file':
if not os.path.isdir(self.cachedir):
os.mkdir(self.cachedir)
self.download(p, packagename)
self.extract_package(p)
elif p.type == 'git':
self.get_git(p)
else:
raise RuntimeError('Unreachable code.')
return p.get('directory')
def get_git(self, p):
checkoutdir = os.path.join(self.subdir_root, p.get('directory'))
revno = p.get('revision')
is_there = os.path.isdir(checkoutdir)
if is_there:
if revno.lower() == 'head':
# Failure to do pull is not a fatal error,
# because otherwise you can't develop without
# a working net connection.
subprocess.call(['git', 'pull'], cwd=checkoutdir)
else:
if subprocess.call(['git', 'checkout', revno], cwd=checkoutdir) != 0:
subprocess.check_call(['git', 'fetch'], cwd=checkoutdir)
subprocess.check_call(['git', 'checkout', revno],
cwd=checkoutdir)
else:
subprocess.check_call(['git', 'clone', p.get('url'),
p.get('directory')], cwd=self.subdir_root)
if revno.lower() != 'head':
subprocess.check_call(['git', 'checkout', revno],
cwd=checkoutdir)
def get_data(self, url):
blocksize = 10*1024
if url.startswith('https://wrapdb.mesonbuild.com'):
resp = open_wrapdburl(url)
else:
resp = urllib.request.urlopen(url)
dlsize = int(resp.info()['Content-Length'])
print('Download size:', dlsize)
print('Downloading: ', end='')
sys.stdout.flush()
printed_dots = 0
blocks = []
downloaded = 0
while True:
block = resp.read(blocksize)
if block == b'':
break
downloaded += len(block)
blocks.append(block)
ratio = int(downloaded/dlsize * 10)
while printed_dots < ratio:
print('.', end='')
sys.stdout.flush()
printed_dots += 1
print('')
resp.close()
return b''.join(blocks)
def get_hash(self, data):
h = hashlib.sha256()
h.update(data)
hashvalue = h.hexdigest()
return hashvalue
def download(self, p, packagename):
ofname = os.path.join(self.cachedir, p.get('source_filename'))
if os.path.exists(ofname):
mlog.log('Using', mlog.bold(packagename), 'from cache.')
return
srcurl = p.get('source_url')
mlog.log('Dowloading', mlog.bold(packagename), 'from', mlog.bold(srcurl))
srcdata = self.get_data(srcurl)
dhash = self.get_hash(srcdata)
expected = p.get('source_hash')
if dhash != expected:
raise RuntimeError('Incorrect hash for source %s:\n %s expected\n %s actual.' % (packagename, expected, dhash))
open(ofname, 'wb').write(srcdata)
if p.has_patch():
purl = p.get('patch_url')
mlog.log('Downloading patch from', mlog.bold(purl))
pdata = self.get_data(purl)
phash = self.get_hash(pdata)
expected = p.get('patch_hash')
if phash != expected:
raise RuntimeError('Incorrect hash for patch %s:\n %s expected\n %s actual' % (packagename, expected, phash))
open(os.path.join(self.cachedir, p.get('patch_filename')), 'wb').write(pdata)
else:
mlog.log('Package does not require patch.')
def extract_package(self, package):
if sys.version_info < (3, 5):
try:
import lzma
del lzma
try:
shutil.register_unpack_format('xztar', ['.tar.xz', '.txz'], shutil._unpack_tarfile, [], "xz'ed tar-file")
except shutil.RegistryError:
pass
except ImportError:
pass
target_dir = os.path.join(self.subdir_root, package.get('directory'))
if os.path.isdir(target_dir):
return
extract_dir = self.subdir_root
# Some upstreams ship packages that do not have a leading directory.
# Create one for them.
try:
package.get('lead_directory_missing')
os.mkdir(target_dir)
extract_dir = target_dir
except KeyError:
pass
shutil.unpack_archive(os.path.join(self.cachedir, package.get('source_filename')), extract_dir)
if package.has_patch():
shutil.unpack_archive(os.path.join(self.cachedir, package.get('patch_filename')), self.subdir_root)
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