# 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 contextlib import urllib.request import urllib.error import urllib.parse import os import hashlib import shutil import tempfile import stat import subprocess import sys import configparser import typing as T import textwrap from .._pathlib import Path from . import WrapMode from .. import coredata from ..mesonlib import verbose_git, quiet_git, GIT, ProgressBar, MesonException if T.TYPE_CHECKING: import http.client try: # Importing is just done to check if SSL exists, so all warnings # regarding 'imported but unused' can be safely ignored import ssl # noqa has_ssl = True API_ROOT = 'https://wrapdb.mesonbuild.com/v1/' except ImportError: has_ssl = False API_ROOT = 'http://wrapdb.mesonbuild.com/v1/' REQ_TIMEOUT = 600.0 SSL_WARNING_PRINTED = False WHITELIST_SUBDOMAIN = 'wrapdb.mesonbuild.com' ALL_TYPES = ['file', 'git', 'hg', 'svn'] def whitelist_wrapdb(urlstr: str) -> urllib.parse.ParseResult: """ raises WrapException if not whitelisted subdomain """ url = urllib.parse.urlparse(urlstr) if not url.hostname: raise WrapException('{} is not a valid URL'.format(urlstr)) if not url.hostname.endswith(WHITELIST_SUBDOMAIN): raise WrapException('{} is not a whitelisted WrapDB URL'.format(urlstr)) if has_ssl and not url.scheme == 'https': raise WrapException('WrapDB did not have expected SSL https url, instead got {}'.format(urlstr)) return url def open_wrapdburl(urlstring: str) -> 'http.client.HTTPResponse': global SSL_WARNING_PRINTED url = whitelist_wrapdb(urlstring) if has_ssl: try: return T.cast('http.client.HTTPResponse', urllib.request.urlopen(urllib.parse.urlunparse(url), timeout=REQ_TIMEOUT)) except urllib.error.URLError as excp: raise WrapException('WrapDB connection failed to {} with error {}'.format(urlstring, excp)) # following code is only for those without Python SSL nossl_url = url._replace(scheme='http') if not SSL_WARNING_PRINTED: mlog.warning('SSL module not available in {}: WrapDB traffic not authenticated.'.format(sys.executable)) SSL_WARNING_PRINTED = True try: return T.cast('http.client.HTTPResponse', urllib.request.urlopen(urllib.parse.urlunparse(nossl_url), timeout=REQ_TIMEOUT)) except urllib.error.URLError as excp: raise WrapException('WrapDB connection failed to {} with error {}'.format(urlstring, excp)) class WrapException(MesonException): pass class WrapNotFoundException(WrapException): pass class PackageDefinition: def __init__(self, fname: str): self.filename = fname self.type = None # type: T.Optional[str] self.values = {} # type: T.Dict[str, str] self.provided_deps = {} # type: T.Dict[str, T.Optional[str]] self.provided_programs = [] # type: T.List[str] self.basename = os.path.basename(fname) self.has_wrap = self.basename.endswith('.wrap') self.name = self.basename[:-5] if self.has_wrap else self.basename self.directory = self.name self.provided_deps[self.name] = None if self.has_wrap: self.parse_wrap() self.directory = self.values.get('directory', self.name) if os.path.dirname(self.directory): raise WrapException('Directory key must be a name and not a path') if self.type and self.type not in ALL_TYPES: raise WrapException('Unknown wrap type {!r}'.format(self.type)) self.filesdir = os.path.join(os.path.dirname(self.filename), 'packagefiles') def parse_wrap(self) -> None: try: self.config = configparser.ConfigParser(interpolation=None) self.config.read(self.filename) except configparser.Error: raise WrapException('Failed to parse {}'.format(self.basename)) self.parse_wrap_section() if self.type == 'redirect': # [wrap-redirect] have a `filename` value pointing to the real wrap # file we should parse instead. It must be relative to the current # wrap file location and must be in the form foo/subprojects/bar.wrap. dirname = Path(self.filename).parent fname = Path(self.values['filename']) for i, p in enumerate(fname.parts): if i % 2 == 0: if p == '..': raise WrapException('wrap-redirect filename cannot contain ".."') else: if p != 'subprojects': raise WrapException('wrap-redirect filename must be in the form foo/subprojects/bar.wrap') if fname.suffix != '.wrap': raise WrapException('wrap-redirect filename must be a .wrap file') fname = dirname / fname if not fname.is_file(): raise WrapException('wrap-redirect filename does not exist') self.filename = str(fname) self.parse_wrap() return self.parse_provide_section() def parse_wrap_section(self) -> None: if len(self.config.sections()) < 1: raise WrapException('Missing sections in {}'.format(self.basename)) self.wrap_section = self.config.sections()[0] if not self.wrap_section.startswith('wrap-'): m = '{!r} is not a valid first section in {}' raise WrapException(m.format(self.wrap_section, self.basename)) self.type = self.wrap_section[5:] self.values = dict(self.config[self.wrap_section]) def parse_provide_section(self) -> None: if self.config.has_section('provide'): for k, v in self.config['provide'].items(): if k == 'dependency_names': # A comma separated list of dependency names that does not # need a variable name names_dict = {n.strip(): None for n in v.split(',')} self.provided_deps.update(names_dict) continue if k == 'program_names': # A comma separated list of program names names_list = [n.strip() for n in v.split(',')] self.provided_programs += names_list continue if not v: m = ('Empty dependency variable name for {!r} in {}. ' 'If the subproject uses meson.override_dependency() ' 'it can be added in the "dependency_names" special key.') raise WrapException(m.format(k, self.basename)) self.provided_deps[k] = v def get(self, key: str) -> str: try: return self.values[key] except KeyError: m = 'Missing key {!r} in {}' raise WrapException(m.format(key, self.basename)) def get_directory(subdir_root: str, packagename: str) -> str: fname = os.path.join(subdir_root, packagename + '.wrap') if os.path.isfile(fname): wrap = PackageDefinition(fname) return wrap.directory return packagename class Resolver: def __init__(self, source_dir: str, subdir: str, wrap_mode: WrapMode = WrapMode.default) -> None: self.source_dir = source_dir self.subdir = subdir self.wrap_mode = wrap_mode self.subdir_root = os.path.join(source_dir, subdir) self.cachedir = os.path.join(self.subdir_root, 'packagecache') self.wraps = {} # type: T.Dict[str, PackageDefinition] self.provided_deps = {} # type: T.Dict[str, PackageDefinition] self.provided_programs = {} # type: T.Dict[str, PackageDefinition] self.load_wraps() def load_wraps(self) -> None: if not os.path.isdir(self.subdir_root): return root, dirs, files = next(os.walk(self.subdir_root)) for i in files: if not i.endswith('.wrap'): continue fname = os.path.join(self.subdir_root, i) wrap = PackageDefinition(fname) self.wraps[wrap.name] = wrap if wrap.directory in dirs: dirs.remove(wrap.directory) # Add dummy package definition for directories not associated with a wrap file. for i in dirs: if i in ['packagecache', 'packagefiles']: continue fname = os.path.join(self.subdir_root, i) wrap = PackageDefinition(fname) self.wraps[wrap.name] = wrap for wrap in self.wraps.values(): for k in wrap.provided_deps.keys(): if k in self.provided_deps: prev_wrap = self.provided_deps[k] m = 'Multiple wrap files provide {!r} dependency: {} and {}' raise WrapException(m.format(k, wrap.basename, prev_wrap.basename)) self.provided_deps[k] = wrap for k in wrap.provided_programs: if k in self.provided_programs: prev_wrap = self.provided_programs[k] m = 'Multiple wrap files provide {!r} program: {} and {}' raise WrapException(m.format(k, wrap.basename, prev_wrap.basename)) self.provided_programs[k] = wrap def merge_wraps(self, other_resolver: 'Resolver') -> None: for k, v in other_resolver.wraps.items(): self.wraps.setdefault(k, v) for k, v in other_resolver.provided_deps.items(): self.provided_deps.setdefault(k, v) for k, v in other_resolver.provided_programs.items(): self.provided_programs.setdefault(k, v) def find_dep_provider(self, packagename: str) -> T.Optional[T.Union[str, T.List[str]]]: # Return value is in the same format as fallback kwarg: # ['subproject_name', 'variable_name'], or 'subproject_name'. wrap = self.provided_deps.get(packagename) if wrap: dep_var = wrap.provided_deps.get(packagename) if dep_var: return [wrap.name, dep_var] return wrap.name return None def find_program_provider(self, names: T.List[str]) -> T.Optional[str]: for name in names: wrap = self.provided_programs.get(name) if wrap: return wrap.name return None def resolve(self, packagename: str, method: str, current_subproject: str = '') -> str: self.current_subproject = current_subproject self.packagename = packagename self.directory = packagename self.wrap = self.wraps.get(packagename) if not self.wrap: m = 'Neither a subproject directory nor a {}.wrap file was found.' raise WrapNotFoundException(m.format(self.packagename)) self.directory = self.wrap.directory if self.wrap.has_wrap: # We have a .wrap file, source code will be placed into main # project's subproject_dir even if the wrap file comes from another # subproject. self.dirname = os.path.join(self.subdir_root, self.directory) # Check if the wrap comes from the main project. main_fname = os.path.join(self.subdir_root, self.wrap.basename) if self.wrap.filename != main_fname: rel = os.path.relpath(self.wrap.filename, self.source_dir) mlog.log('Using', mlog.bold(rel)) # Write a dummy wrap file in main project that redirect to the # wrap we picked. with open(main_fname, 'w') as f: f.write(textwrap.dedent('''\ [wrap-redirect] filename = {} '''.format(os.path.relpath(self.wrap.filename, self.subdir_root)))) else: # No wrap file, it's a dummy package definition for an existing # directory. Use the source code in place. self.dirname = self.wrap.filename rel_path = os.path.relpath(self.dirname, self.source_dir) meson_file = os.path.join(self.dirname, 'meson.build') cmake_file = os.path.join(self.dirname, 'CMakeLists.txt') if method not in ['meson', 'cmake']: raise WrapException('Only the methods "meson" and "cmake" are supported') # The directory is there and has meson.build? Great, use it. if method == 'meson' and os.path.exists(meson_file): return rel_path if method == 'cmake' and os.path.exists(cmake_file): return rel_path # Check if the subproject is a git submodule self.resolve_git_submodule() if os.path.exists(self.dirname): if not os.path.isdir(self.dirname): raise WrapException('Path already exists but is not a directory') else: if self.wrap.type == 'file': self.get_file() else: self.check_can_download() if self.wrap.type == 'git': self.get_git() elif self.wrap.type == "hg": self.get_hg() elif self.wrap.type == "svn": self.get_svn() else: raise WrapException('Unknown wrap type {!r}'.format(self.wrap.type)) self.apply_patch() # A meson.build or CMakeLists.txt file is required in the directory if method == 'meson' and not os.path.exists(meson_file): raise WrapException('Subproject exists but has no meson.build file') if method == 'cmake' and not os.path.exists(cmake_file): raise WrapException('Subproject exists but has no CMakeLists.txt file') return rel_path def check_can_download(self) -> None: # Don't download subproject data based on wrap file if requested. # Git submodules are ok (see above)! if self.wrap_mode is WrapMode.nodownload: m = 'Automatic wrap-based subproject downloading is disabled' raise WrapException(m) def resolve_git_submodule(self) -> bool: if not GIT: raise WrapException('Git program not found.') # Are we in a git repository? ret, out = quiet_git(['rev-parse'], self.subdir_root) if not ret: return False # Is `dirname` a submodule? ret, out = quiet_git(['submodule', 'status', self.dirname], self.subdir_root) if not ret: return False # Submodule has not been added, add it if out.startswith('+'): mlog.warning('git submodule might be out of date') return True elif out.startswith('U'): raise WrapException('git submodule has merge conflicts') # Submodule exists, but is deinitialized or wasn't initialized elif out.startswith('-'): if verbose_git(['submodule', 'update', '--init', self.dirname], self.subdir_root): return True raise WrapException('git submodule failed to init') # Submodule looks fine, but maybe it wasn't populated properly. Do a checkout. elif out.startswith(' '): verbose_git(['checkout', '.'], self.dirname) # Even if checkout failed, try building it anyway and let the user # handle any problems manually. return True elif out == '': # It is not a submodule, just a folder that exists in the main repository. return False m = 'Unknown git submodule output: {!r}' raise WrapException(m.format(out)) def get_file(self) -> None: path = self.get_file_internal('source') extract_dir = self.subdir_root # Some upstreams ship packages that do not have a leading directory. # Create one for them. if 'lead_directory_missing' in self.wrap.values: os.mkdir(self.dirname) extract_dir = self.dirname shutil.unpack_archive(path, extract_dir) def get_git(self) -> None: if not GIT: raise WrapException('Git program not found.') revno = self.wrap.get('revision') is_shallow = False depth_option = [] # type: T.List[str] if self.wrap.values.get('depth', '') != '': is_shallow = True depth_option = ['--depth', self.wrap.values.get('depth')] # for some reason git only allows commit ids to be shallowly fetched by fetch not with clone if is_shallow and self.is_git_full_commit_id(revno): # git doesn't support directly cloning shallowly for commits, # so we follow https://stackoverflow.com/a/43136160 verbose_git(['init', self.directory], self.subdir_root, check=True) verbose_git(['remote', 'add', 'origin', self.wrap.get('url')], self.dirname, check=True) revno = self.wrap.get('revision') verbose_git(['fetch', *depth_option, 'origin', revno], self.dirname, check=True) verbose_git(['checkout', revno], self.dirname, check=True) if self.wrap.values.get('clone-recursive', '').lower() == 'true': verbose_git(['submodule', 'update', '--init', '--checkout', '--recursive', *depth_option], self.dirname, check=True) push_url = self.wrap.values.get('push-url') if push_url: verbose_git(['remote', 'set-url', '--push', 'origin', push_url], self.dirname, check=True) else: if not is_shallow: verbose_git(['clone', self.wrap.get('url'), self.directory], self.subdir_root, check=True) if revno.lower() != 'head': if not verbose_git(['checkout', revno], self.dirname): verbose_git(['fetch', self.wrap.get('url'), revno], self.dirname, check=True) verbose_git(['checkout', revno], self.dirname, check=True) else: verbose_git(['clone', *depth_option, '--branch', revno, self.wrap.get('url'), self.directory], self.subdir_root, check=True) if self.wrap.values.get('clone-recursive', '').lower() == 'true': verbose_git(['submodule', 'update', '--init', '--checkout', '--recursive', *depth_option], self.dirname, check=True) push_url = self.wrap.values.get('push-url') if push_url: verbose_git(['remote', 'set-url', '--push', 'origin', push_url], self.dirname, check=True) def is_git_full_commit_id(self, revno: str) -> bool: result = False if len(revno) in (40, 64): # 40 for sha1, 64 for upcoming sha256 result = all((ch in '0123456789AaBbCcDdEeFf' for ch in revno)) return result def get_hg(self) -> None: revno = self.wrap.get('revision') hg = shutil.which('hg') if not hg: raise WrapException('Mercurial program not found.') subprocess.check_call([hg, 'clone', self.wrap.get('url'), self.directory], cwd=self.subdir_root) if revno.lower() != 'tip': subprocess.check_call([hg, 'checkout', revno], cwd=self.dirname) def get_svn(self) -> None: revno = self.wrap.get('revision') svn = shutil.which('svn') if not svn: raise WrapException('SVN program not found.') subprocess.check_call([svn, 'checkout', '-r', revno, self.wrap.get('url'), self.directory], cwd=self.subdir_root) def get_data(self, urlstring: str) -> T.Tuple[str, str]: blocksize = 10 * 1024 h = hashlib.sha256() tmpfile = tempfile.NamedTemporaryFile(mode='wb', dir=self.cachedir, delete=False) url = urllib.parse.urlparse(urlstring) if url.hostname and url.hostname.endswith(WHITELIST_SUBDOMAIN): resp = open_wrapdburl(urlstring) elif WHITELIST_SUBDOMAIN in urlstring: raise WrapException('{} may be a WrapDB-impersonating URL'.format(urlstring)) else: try: req = urllib.request.Request(urlstring, headers={'User-Agent': 'mesonbuild/{}'.format(coredata.version)}) resp = urllib.request.urlopen(req, timeout=REQ_TIMEOUT) except urllib.error.URLError as e: mlog.log(str(e)) raise WrapException('could not get {} is the internet available?'.format(urlstring)) with contextlib.closing(resp) as resp: try: dlsize = int(resp.info()['Content-Length']) except TypeError: dlsize = None if dlsize is None: print('Downloading file of unknown size.') while True: block = resp.read(blocksize) if block == b'': break h.update(block) tmpfile.write(block) hashvalue = h.hexdigest() return hashvalue, tmpfile.name sys.stdout.flush() progress_bar = ProgressBar(bar_type='download', total=dlsize, desc='Downloading') while True: block = resp.read(blocksize) if block == b'': break h.update(block) tmpfile.write(block) progress_bar.update(len(block)) progress_bar.close() hashvalue = h.hexdigest() return hashvalue, tmpfile.name def check_hash(self, what: str, path: str, hash_required: bool = True) -> None: if what + '_hash' not in self.wrap.values and not hash_required: return expected = self.wrap.get(what + '_hash') h = hashlib.sha256() with open(path, 'rb') as f: h.update(f.read()) dhash = h.hexdigest() if dhash != expected: raise WrapException('Incorrect hash for {}:\n {} expected\n {} actual.'.format(what, expected, dhash)) def download(self, what: str, ofname: str, fallback: bool = False) -> None: self.check_can_download() srcurl = self.wrap.get(what + ('_fallback_url' if fallback else '_url')) mlog.log('Downloading', mlog.bold(self.packagename), what, 'from', mlog.bold(srcurl)) try: dhash, tmpfile = self.get_data(srcurl) expected = self.wrap.get(what + '_hash') if dhash != expected: os.remove(tmpfile) raise WrapException('Incorrect hash for {}:\n {} expected\n {} actual.'.format(what, expected, dhash)) except WrapException: if not fallback: if what + '_fallback_url' in self.wrap.values: return self.download(what, ofname, fallback=True) mlog.log('A fallback URL could be specified using', mlog.bold(what + '_fallback_url'), 'key in the wrap file') raise os.rename(tmpfile, ofname) def get_file_internal(self, what: str) -> str: filename = self.wrap.get(what + '_filename') if what + '_url' in self.wrap.values: cache_path = os.path.join(self.cachedir, filename) if os.path.exists(cache_path): self.check_hash(what, cache_path) mlog.log('Using', mlog.bold(self.packagename), what, 'from cache.') return cache_path if not os.path.isdir(self.cachedir): os.mkdir(self.cachedir) self.download(what, cache_path) return cache_path else: from ..interpreterbase import FeatureNew FeatureNew('Local wrap patch files without {}_url'.format(what), '0.55.0').use(self.current_subproject) path = Path(self.wrap.filesdir) / filename if not path.exists(): raise WrapException('File "{}" does not exist'.format(path)) self.check_hash(what, path.as_posix(), hash_required=False) return path.as_posix() def apply_patch(self) -> None: if 'patch_filename' in self.wrap.values and 'patch_directory' in self.wrap.values: m = 'Wrap file {!r} must not have both "patch_filename" and "patch_directory"' raise WrapException(m.format(self.wrap.basename)) if 'patch_filename' in self.wrap.values: path = self.get_file_internal('patch') try: shutil.unpack_archive(path, self.subdir_root) except Exception: with tempfile.TemporaryDirectory() as workdir: shutil.unpack_archive(path, workdir) self.copy_tree(workdir, self.subdir_root) elif 'patch_directory' in self.wrap.values: from ..interpreterbase import FeatureNew FeatureNew('patch_directory', '0.55.0').use(self.current_subproject) patch_dir = self.wrap.values['patch_directory'] src_dir = os.path.join(self.wrap.filesdir, patch_dir) if not os.path.isdir(src_dir): raise WrapException('patch directory does not exists: {}'.format(patch_dir)) self.copy_tree(src_dir, self.dirname) def copy_tree(self, root_src_dir: str, root_dst_dir: str) -> None: """ Copy directory tree. Overwrites also read only files. """ for src_dir, _, files in os.walk(root_src_dir): dst_dir = src_dir.replace(root_src_dir, root_dst_dir, 1) if not os.path.exists(dst_dir): os.makedirs(dst_dir) for file_ in files: src_file = os.path.join(src_dir, file_) dst_file = os.path.join(dst_dir, file_) if os.path.exists(dst_file): try: os.remove(dst_file) except PermissionError: os.chmod(dst_file, stat.S_IWUSR) os.remove(dst_file) shutil.copy2(src_file, dst_dir)