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|
# Copyright 2010 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Id: fetch.py 15744 2010-03-04 07:11:59Z zmedico $
from __future__ import print_function
__all__ = ['fetch']
import codecs
import errno
import logging
import random
import re
import shutil
import stat
import sys
import tempfile
import json
import portage
portage.proxy.lazyimport.lazyimport(globals(),
'portage.package.ebuild.config:check_config_instance,config',
'portage.package.ebuild.doebuild:doebuild_environment,' + \
'spawn@doebuild_spawn',
'portage.package.ebuild.prepare_build_dirs:prepare_build_dirs',
)
from portage import OrderedDict, os, selinux, _encodings, \
_shell_quote, _unicode_encode
from portage.checksum import perform_md5, verify_all
from portage.const import BASH_BINARY, CUSTOM_MIRRORS_FILE, \
EBUILD_SH_BINARY, GLOBAL_CONFIG_PATH
from portage.data import portage_gid, portage_uid, secpass, userpriv_groups
from portage.exception import FileNotFound, OperationNotPermitted, \
PermissionDenied, PortageException, TryAgain
from portage.localization import _
from portage.locks import lockfile, unlockfile
from portage.manifest import Manifest
from portage.output import colorize, EOutput
from portage.util import apply_recursive_permissions, \
apply_secpass_permissions, ensure_dirs, grabdict, shlex_split, \
varexpand, writemsg, writemsg_level, writemsg_stdout
from portage.process import spawn
_userpriv_spawn_kwargs = (
("uid", portage_uid),
("gid", portage_gid),
("groups", userpriv_groups),
("umask", 0o02),
)
def _spawn_fetch(settings, args, **kwargs):
"""
Spawn a process with appropriate settings for fetching, including
userfetch and selinux support.
"""
global _userpriv_spawn_kwargs
# Redirect all output to stdout since some fetchers like
# wget pollute stderr (if portage detects a problem then it
# can send it's own message to stderr).
if "fd_pipes" not in kwargs:
kwargs["fd_pipes"] = {
0 : sys.stdin.fileno(),
1 : sys.stdout.fileno(),
2 : sys.stdout.fileno(),
}
if "userfetch" in settings.features and \
os.getuid() == 0 and portage_gid and portage_uid:
kwargs.update(_userpriv_spawn_kwargs)
spawn_func = spawn
if settings.selinux_enabled():
spawn_func = selinux.spawn_wrapper(spawn_func,
settings["PORTAGE_FETCH_T"])
# bash is an allowed entrypoint, while most binaries are not
if args[0] != BASH_BINARY:
args = [BASH_BINARY, "-c", "exec \"$@\"", args[0]] + args
rval = spawn_func(args, env=settings.environ(), **kwargs)
return rval
_userpriv_test_write_file_cache = {}
_userpriv_test_write_cmd_script = "touch %(file_path)s 2>/dev/null ; rval=$? ; " + \
"rm -f %(file_path)s ; exit $rval"
def _userpriv_test_write_file(settings, file_path):
"""
Drop privileges and try to open a file for writing. The file may or
may not exist, and the parent directory is assumed to exist. The file
is removed before returning.
@param settings: A config instance which is passed to _spawn_fetch()
@param file_path: A file path to open and write.
@return: True if write succeeds, False otherwise.
"""
global _userpriv_test_write_file_cache, _userpriv_test_write_cmd_script
rval = _userpriv_test_write_file_cache.get(file_path)
if rval is not None:
return rval
args = [BASH_BINARY, "-c", _userpriv_test_write_cmd_script % \
{"file_path" : _shell_quote(file_path)}]
returncode = _spawn_fetch(settings, args)
rval = returncode == os.EX_OK
_userpriv_test_write_file_cache[file_path] = rval
return rval
def _checksum_failure_temp_file(distdir, basename):
"""
First try to find a duplicate temp file with the same checksum and return
that filename if available. Otherwise, use mkstemp to create a new unique
filename._checksum_failure_.$RANDOM, rename the given file, and return the
new filename. In any case, filename will be renamed or removed before this
function returns a temp filename.
"""
filename = os.path.join(distdir, basename)
size = os.stat(filename).st_size
checksum = None
tempfile_re = re.compile(re.escape(basename) + r'\._checksum_failure_\..*')
for temp_filename in os.listdir(distdir):
if not tempfile_re.match(temp_filename):
continue
temp_filename = os.path.join(distdir, temp_filename)
try:
if size != os.stat(temp_filename).st_size:
continue
except OSError:
continue
try:
temp_checksum = perform_md5(temp_filename)
except FileNotFound:
# Apparently the temp file disappeared. Let it go.
continue
if checksum is None:
checksum = perform_md5(filename)
if checksum == temp_checksum:
os.unlink(filename)
return temp_filename
fd, temp_filename = \
tempfile.mkstemp("", basename + "._checksum_failure_.", distdir)
os.close(fd)
os.rename(filename, temp_filename)
return temp_filename
def _check_digests(filename, digests, show_errors=1):
"""
Check digests and display a message if an error occurs.
@return True if all digests match, False otherwise.
"""
verified_ok, reason = verify_all(filename, digests)
if not verified_ok:
if show_errors:
writemsg(_("!!! Previously fetched"
" file: '%s'\n") % filename, noiselevel=-1)
writemsg(_("!!! Reason: %s\n") % reason[0],
noiselevel=-1)
writemsg(_("!!! Got: %s\n"
"!!! Expected: %s\n") % \
(reason[1], reason[2]), noiselevel=-1)
return False
return True
def _check_distfile(filename, digests, eout, show_errors=1):
"""
@return a tuple of (match, stat_obj) where match is True if filename
matches all given digests (if any) and stat_obj is a stat result, or
None if the file does not exist.
"""
if digests is None:
digests = {}
size = digests.get("size")
if size is not None and len(digests) == 1:
digests = None
try:
st = os.stat(filename)
except OSError:
return (False, None)
if size is not None and size != st.st_size:
return (False, st)
if not digests:
if size is not None:
eout.ebegin(_("%s size ;-)") % os.path.basename(filename))
eout.eend(0)
elif st.st_size == 0:
# Zero-byte distfiles are always invalid.
return (False, st)
else:
if _check_digests(filename, digests, show_errors=show_errors):
eout.ebegin("%s %s ;-)" % (os.path.basename(filename),
" ".join(sorted(digests))))
eout.eend(0)
else:
return (False, st)
return (True, st)
_fetch_resume_size_re = re.compile('(^[\d]+)([KMGTPEZY]?$)')
_size_suffix_map = {
'' : 0,
'K' : 10,
'M' : 20,
'G' : 30,
'T' : 40,
'P' : 50,
'E' : 60,
'Z' : 70,
'Y' : 80,
}
def fetch(myuris, mysettings, listonly=0, fetchonly=0, locks_in_subdir=".locks",use_locks=1, try_mirrors=1):
"fetch files. Will use digest file if available."
use_twrapper_to_download = ("USE_TWRAPPER" in mysettings) and fetchonly;
if use_twrapper_to_download:
# print("mysettings[DISTDIR]: ",mysettings["DISTDIR"])
# TO-DO: wait for release of lock_file, create lock_file, load file, unlink lock_file
idfetch_pkg_list_file_name=mysettings['USE_TWRAPPER']+"/var/pkg.list"
print("Using TWRAPPER. Saving pkg_list.list file to ",idfetch_pkg_list_file_name)
try:
idfetch_pkg_list_file = open(idfetch_pkg_list_file_name,"r")
idfetch_pkg_list=json.loads(idfetch_pkg_list_file.read())
idfetch_pkg_list_file.close()
except:
idfetch_pkg_list=list()
idfetch_pkg=dict()
idfetch_pkg_name=mysettings.configdict["pkg"].get("PF")
idfetch_pkg['pkg_name']=idfetch_pkg_name
idfetch_pkg['CATEGORY']=mysettings.configdict["pkg"].get("CATEGORY")
idfetch_pkg['distfile_list']=list()
#idfetch_pkg['third_party_mirrors']=mysettings.thirdpartymirrors()
# remove old records of the packages with the same name if they are already in the list
for cur_pkg in idfetch_pkg_list:
if cur_pkg['pkg_name'] == idfetch_pkg_name:
idfetch_pkg_list.remove(cur_pkg)
idfetch_pkg_list.append(idfetch_pkg)
else:
print("To use twrapper: set USE_TWRAPPER=\"your_twrapper_dir\" in /etc/make.conf")
if not myuris:
return 1
features = mysettings.features
restrict = mysettings.get("PORTAGE_RESTRICT","").split()
userfetch = secpass >= 2 and "userfetch" in features
userpriv = secpass >= 2 and "userpriv" in features
# 'nomirror' is bad/negative logic. You Restrict mirroring, not no-mirroring.
if "mirror" in restrict or \
"nomirror" in restrict:
if ("mirror" in features) and ("lmirror" not in features):
# lmirror should allow you to bypass mirror restrictions.
# XXX: This is not a good thing, and is temporary at best.
print(_(">>> \"mirror\" mode desired and \"mirror\" restriction found; skipping fetch."))
return 1
# Generally, downloading the same file repeatedly from
# every single available mirror is a waste of bandwidth
# and time, so there needs to be a cap.
checksum_failure_max_tries = 5
v = checksum_failure_max_tries
try:
v = int(mysettings.get("PORTAGE_FETCH_CHECKSUM_TRY_MIRRORS",
checksum_failure_max_tries))
except (ValueError, OverflowError):
writemsg(_("!!! Variable PORTAGE_FETCH_CHECKSUM_TRY_MIRRORS"
" contains non-integer value: '%s'\n") % \
mysettings["PORTAGE_FETCH_CHECKSUM_TRY_MIRRORS"], noiselevel=-1)
writemsg(_("!!! Using PORTAGE_FETCH_CHECKSUM_TRY_MIRRORS "
"default value: %s\n") % checksum_failure_max_tries,
noiselevel=-1)
v = checksum_failure_max_tries
if v < 1:
writemsg(_("!!! Variable PORTAGE_FETCH_CHECKSUM_TRY_MIRRORS"
" contains value less than 1: '%s'\n") % v, noiselevel=-1)
writemsg(_("!!! Using PORTAGE_FETCH_CHECKSUM_TRY_MIRRORS "
"default value: %s\n") % checksum_failure_max_tries,
noiselevel=-1)
v = checksum_failure_max_tries
checksum_failure_max_tries = v
del v
fetch_resume_size_default = "350K"
fetch_resume_size = mysettings.get("PORTAGE_FETCH_RESUME_MIN_SIZE")
if fetch_resume_size is not None:
fetch_resume_size = "".join(fetch_resume_size.split())
if not fetch_resume_size:
# If it's undefined or empty, silently use the default.
fetch_resume_size = fetch_resume_size_default
match = _fetch_resume_size_re.match(fetch_resume_size)
if match is None or \
(match.group(2).upper() not in _size_suffix_map):
writemsg(_("!!! Variable PORTAGE_FETCH_RESUME_MIN_SIZE"
" contains an unrecognized format: '%s'\n") % \
mysettings["PORTAGE_FETCH_RESUME_MIN_SIZE"], noiselevel=-1)
writemsg(_("!!! Using PORTAGE_FETCH_RESUME_MIN_SIZE "
"default value: %s\n") % fetch_resume_size_default,
noiselevel=-1)
fetch_resume_size = None
if fetch_resume_size is None:
fetch_resume_size = fetch_resume_size_default
match = _fetch_resume_size_re.match(fetch_resume_size)
fetch_resume_size = int(match.group(1)) * \
2 ** _size_suffix_map[match.group(2).upper()]
# Behave like the package has RESTRICT="primaryuri" after a
# couple of checksum failures, to increase the probablility
# of success before checksum_failure_max_tries is reached.
checksum_failure_primaryuri = 2
thirdpartymirrors = mysettings.thirdpartymirrors()
# In the background parallel-fetch process, it's safe to skip checksum
# verification of pre-existing files in $DISTDIR that have the correct
# file size. The parent process will verify their checksums prior to
# the unpack phase.
parallel_fetchonly = "PORTAGE_PARALLEL_FETCHONLY" in mysettings
if parallel_fetchonly:
fetchonly = 1
check_config_instance(mysettings)
custommirrors = grabdict(os.path.join(mysettings["PORTAGE_CONFIGROOT"],
CUSTOM_MIRRORS_FILE), recursive=1)
mymirrors=[]
if listonly or ("distlocks" not in features):
use_locks = 0
fetch_to_ro = 0
if "skiprocheck" in features:
fetch_to_ro = 1
if not os.access(mysettings["DISTDIR"],os.W_OK) and fetch_to_ro:
if use_locks:
writemsg(colorize("BAD",
_("!!! For fetching to a read-only filesystem, "
"locking should be turned off.\n")), noiselevel=-1)
writemsg(_("!!! This can be done by adding -distlocks to "
"FEATURES in /etc/make.conf\n"), noiselevel=-1)
# use_locks = 0
# local mirrors are always added
if "local" in custommirrors:
mymirrors += custommirrors["local"]
if "nomirror" in restrict or \
"mirror" in restrict:
# We don't add any mirrors.
pass
else:
if try_mirrors:
mymirrors += [x.rstrip("/") for x in mysettings["GENTOO_MIRRORS"].split() if x]
skip_manifest = mysettings.get("EBUILD_SKIP_MANIFEST") == "1"
pkgdir = mysettings.get("O")
if not (pkgdir is None or skip_manifest):
mydigests = Manifest(
pkgdir, mysettings["DISTDIR"]).getTypeDigests("DIST")
else:
# no digests because fetch was not called for a specific package
mydigests = {}
ro_distdirs = [x for x in \
shlex_split(mysettings.get("PORTAGE_RO_DISTDIRS", "")) \
if os.path.isdir(x)]
fsmirrors = []
for x in range(len(mymirrors)-1,-1,-1):
if mymirrors[x] and mymirrors[x][0]=='/':
fsmirrors += [mymirrors[x]]
del mymirrors[x]
restrict_fetch = "fetch" in restrict
custom_local_mirrors = custommirrors.get("local", [])
if restrict_fetch:
# With fetch restriction, a normal uri may only be fetched from
# custom local mirrors (if available). A mirror:// uri may also
# be fetched from specific mirrors (effectively overriding fetch
# restriction, but only for specific mirrors).
locations = custom_local_mirrors
else:
locations = mymirrors
file_uri_tuples = []
# Check for 'items' attribute since OrderedDict is not a dict.
if hasattr(myuris, 'items'):
for myfile, uri_set in myuris.items():
for myuri in uri_set:
file_uri_tuples.append((myfile, myuri))
else:
for myuri in myuris:
file_uri_tuples.append((os.path.basename(myuri), myuri))
filedict = OrderedDict()
primaryuri_indexes={}
primaryuri_dict = {}
thirdpartymirror_uris = {}
for myfile, myuri in file_uri_tuples:
if myfile not in filedict:
filedict[myfile]=[]
for y in range(0,len(locations)):
filedict[myfile].append(locations[y]+"/distfiles/"+myfile)
if myuri[:9]=="mirror://":
eidx = myuri.find("/", 9)
if eidx != -1:
mirrorname = myuri[9:eidx]
path = myuri[eidx+1:]
# Try user-defined mirrors first
if mirrorname in custommirrors:
for cmirr in custommirrors[mirrorname]:
filedict[myfile].append(
cmirr.rstrip("/") + "/" + path)
# now try the official mirrors
if mirrorname in thirdpartymirrors:
random.shuffle(thirdpartymirrors[mirrorname])
uris = [locmirr.rstrip("/") + "/" + path \
for locmirr in thirdpartymirrors[mirrorname]]
filedict[myfile].extend(uris)
thirdpartymirror_uris.setdefault(myfile, []).extend(uris)
if not filedict[myfile]:
writemsg(_("No known mirror by the name: %s\n") % (mirrorname))
else:
writemsg(_("Invalid mirror definition in SRC_URI:\n"), noiselevel=-1)
writemsg(" %s\n" % (myuri), noiselevel=-1)
else:
if restrict_fetch:
# Only fetch from specific mirrors is allowed.
continue
if "primaryuri" in restrict:
# Use the source site first.
if myfile in primaryuri_indexes:
primaryuri_indexes[myfile] += 1
else:
primaryuri_indexes[myfile] = 0
filedict[myfile].insert(primaryuri_indexes[myfile], myuri)
else:
filedict[myfile].append(myuri)
primaryuris = primaryuri_dict.get(myfile)
if primaryuris is None:
primaryuris = []
primaryuri_dict[myfile] = primaryuris
primaryuris.append(myuri)
# Prefer thirdpartymirrors over normal mirrors in cases when
# the file does not yet exist on the normal mirrors.
for myfile, uris in thirdpartymirror_uris.items():
primaryuri_dict.setdefault(myfile, []).extend(uris)
can_fetch=True
if listonly:
can_fetch = False
if can_fetch and not fetch_to_ro:
global _userpriv_test_write_file_cache
dirmode = 0o2070
filemode = 0o60
modemask = 0o2
dir_gid = portage_gid
if "FAKED_MODE" in mysettings:
# When inside fakeroot, directories with portage's gid appear
# to have root's gid. Therefore, use root's gid instead of
# portage's gid to avoid spurrious permissions adjustments
# when inside fakeroot.
dir_gid = 0
distdir_dirs = [""]
if "distlocks" in features:
distdir_dirs.append(".locks")
try:
for x in distdir_dirs:
mydir = os.path.join(mysettings["DISTDIR"], x)
write_test_file = os.path.join(
mydir, ".__portage_test_write__")
try:
st = os.stat(mydir)
except OSError:
st = None
if st is not None and stat.S_ISDIR(st.st_mode):
if not (userfetch or userpriv):
continue
if _userpriv_test_write_file(mysettings, write_test_file):
continue
_userpriv_test_write_file_cache.pop(write_test_file, None)
if ensure_dirs(mydir, gid=dir_gid, mode=dirmode, mask=modemask):
if st is None:
# The directory has just been created
# and therefore it must be empty.
continue
writemsg(_("Adjusting permissions recursively: '%s'\n") % mydir,
noiselevel=-1)
def onerror(e):
raise # bail out on the first error that occurs during recursion
if not apply_recursive_permissions(mydir,
gid=dir_gid, dirmode=dirmode, dirmask=modemask,
filemode=filemode, filemask=modemask, onerror=onerror):
raise OperationNotPermitted(
_("Failed to apply recursive permissions for the portage group."))
except PortageException as e:
if not os.path.isdir(mysettings["DISTDIR"]):
writemsg("!!! %s\n" % str(e), noiselevel=-1)
writemsg(_("!!! Directory Not Found: DISTDIR='%s'\n") % mysettings["DISTDIR"], noiselevel=-1)
writemsg(_("!!! Fetching will fail!\n"), noiselevel=-1)
if can_fetch and \
not fetch_to_ro and \
not os.access(mysettings["DISTDIR"], os.W_OK):
writemsg(_("!!! No write access to '%s'\n") % mysettings["DISTDIR"],
noiselevel=-1)
can_fetch = False
if can_fetch and use_locks and locks_in_subdir:
distlocks_subdir = os.path.join(mysettings["DISTDIR"], locks_in_subdir)
if not os.access(distlocks_subdir, os.W_OK):
writemsg(_("!!! No write access to write to %s. Aborting.\n") % distlocks_subdir,
noiselevel=-1)
return 0
del distlocks_subdir
distdir_writable = can_fetch and not fetch_to_ro
failed_files = set()
restrict_fetch_msg = False
for myfile in filedict:
"""
fetched status
0 nonexistent
1 partially downloaded
2 completely downloaded
"""
fetched = 0
orig_digests = mydigests.get(myfile, {})
size = orig_digests.get("size")
if size == 0:
# Zero-byte distfiles are always invalid, so discard their digests.
del mydigests[myfile]
orig_digests.clear()
size = None
pruned_digests = orig_digests
if parallel_fetchonly:
pruned_digests = {}
if size is not None:
pruned_digests["size"] = size
myfile_path = os.path.join(mysettings["DISTDIR"], myfile)
has_space = True
has_space_superuser = True
file_lock = None
if listonly:
writemsg_stdout("\n", noiselevel=-1)
else:
# check if there is enough space in DISTDIR to completely store myfile
# overestimate the filesize so we aren't bitten by FS overhead
if size is not None and hasattr(os, "statvfs"):
vfs_stat = os.statvfs(mysettings["DISTDIR"])
try:
mysize = os.stat(myfile_path).st_size
except OSError as e:
if e.errno not in (errno.ENOENT, errno.ESTALE):
raise
del e
mysize = 0
if (size - mysize + vfs_stat.f_bsize) >= \
(vfs_stat.f_bsize * vfs_stat.f_bavail):
if (size - mysize + vfs_stat.f_bsize) >= \
(vfs_stat.f_bsize * vfs_stat.f_bfree):
has_space_superuser = False
if not has_space_superuser:
has_space = False
elif secpass < 2:
has_space = False
elif userfetch:
has_space = False
if not has_space:
writemsg(_("!!! Insufficient space to store %s in %s\n") % \
(myfile, mysettings["DISTDIR"]), noiselevel=-1)
if has_space_superuser:
writemsg(_("!!! Insufficient privileges to use "
"remaining space.\n"), noiselevel=-1)
if userfetch:
writemsg(_("!!! You may set FEATURES=\"-userfetch\""
" in /etc/make.conf in order to fetch with\n"
"!!! superuser privileges.\n"), noiselevel=-1)
if distdir_writable and use_locks:
lock_kwargs = {}
if fetchonly:
lock_kwargs["flags"] = os.O_NONBLOCK
try:
file_lock = lockfile(myfile_path,
wantnewlockfile=1, **lock_kwargs)
except TryAgain:
writemsg(_(">>> File '%s' is already locked by "
"another fetcher. Continuing...\n") % myfile,
noiselevel=-1)
continue
try:
if not listonly:
eout = EOutput()
eout.quiet = mysettings.get("PORTAGE_QUIET") == "1"
match, mystat = _check_distfile(
myfile_path, pruned_digests, eout)
if match:
if distdir_writable:
try:
apply_secpass_permissions(myfile_path,
gid=portage_gid, mode=0o664, mask=0o2,
stat_cached=mystat)
except PortageException as e:
if not os.access(myfile_path, os.R_OK):
writemsg(_("!!! Failed to adjust permissions:"
" %s\n") % str(e), noiselevel=-1)
del e
continue
if distdir_writable and mystat is None:
# Remove broken symlinks if necessary.
try:
os.unlink(myfile_path)
except OSError:
pass
if mystat is not None:
if stat.S_ISDIR(mystat.st_mode):
writemsg_level(
_("!!! Unable to fetch file since "
"a directory is in the way: \n"
"!!! %s\n") % myfile_path,
level=logging.ERROR, noiselevel=-1)
return 0
if mystat.st_size == 0:
if distdir_writable:
try:
os.unlink(myfile_path)
except OSError:
pass
elif distdir_writable:
if mystat.st_size < fetch_resume_size and \
mystat.st_size < size:
# If the file already exists and the size does not
# match the existing digests, it may be that the
# user is attempting to update the digest. In this
# case, the digestgen() function will advise the
# user to use `ebuild --force foo.ebuild manifest`
# in order to force the old digests to be replaced.
# Since the user may want to keep this file, rename
# it instead of deleting it.
writemsg(_(">>> Renaming distfile with size "
"%d (smaller than " "PORTAGE_FETCH_RESU"
"ME_MIN_SIZE)\n") % mystat.st_size)
temp_filename = \
_checksum_failure_temp_file(
mysettings["DISTDIR"], myfile)
writemsg_stdout(_("Refetching... "
"File renamed to '%s'\n\n") % \
temp_filename, noiselevel=-1)
elif mystat.st_size >= size:
temp_filename = \
_checksum_failure_temp_file(
mysettings["DISTDIR"], myfile)
writemsg_stdout(_("Refetching... "
"File renamed to '%s'\n\n") % \
temp_filename, noiselevel=-1)
if distdir_writable and ro_distdirs:
readonly_file = None
for x in ro_distdirs:
filename = os.path.join(x, myfile)
match, mystat = _check_distfile(
filename, pruned_digests, eout)
if match:
readonly_file = filename
break
if readonly_file is not None:
try:
os.unlink(myfile_path)
except OSError as e:
if e.errno not in (errno.ENOENT, errno.ESTALE):
raise
del e
os.symlink(readonly_file, myfile_path)
continue
if fsmirrors and not os.path.exists(myfile_path) and has_space:
for mydir in fsmirrors:
mirror_file = os.path.join(mydir, myfile)
try:
shutil.copyfile(mirror_file, myfile_path)
writemsg(_("Local mirror has file: %s\n") % myfile)
break
except (IOError, OSError) as e:
if e.errno not in (errno.ENOENT, errno.ESTALE):
raise
del e
try:
mystat = os.stat(myfile_path)
except OSError as e:
if e.errno not in (errno.ENOENT, errno.ESTALE):
raise
del e
else:
try:
apply_secpass_permissions(
myfile_path, gid=portage_gid, mode=0o664, mask=0o2,
stat_cached=mystat)
except PortageException as e:
if not os.access(myfile_path, os.R_OK):
writemsg(_("!!! Failed to adjust permissions:"
" %s\n") % str(e), noiselevel=-1)
# If the file is empty then it's obviously invalid. Remove
# the empty file and try to download if possible.
if mystat.st_size == 0:
if distdir_writable:
try:
os.unlink(myfile_path)
except EnvironmentError:
pass
elif myfile not in mydigests:
# We don't have a digest, but the file exists. We must
# assume that it is fully downloaded.
continue
else:
if mystat.st_size < mydigests[myfile]["size"] and \
not restrict_fetch:
fetched = 1 # Try to resume this download.
elif parallel_fetchonly and \
mystat.st_size == mydigests[myfile]["size"]:
eout = EOutput()
eout.quiet = \
mysettings.get("PORTAGE_QUIET") == "1"
eout.ebegin(
"%s size ;-)" % (myfile, ))
eout.eend(0)
continue
else:
verified_ok, reason = verify_all(
myfile_path, mydigests[myfile])
if not verified_ok:
writemsg(_("!!! Previously fetched"
" file: '%s'\n") % myfile, noiselevel=-1)
writemsg(_("!!! Reason: %s\n") % reason[0],
noiselevel=-1)
writemsg(_("!!! Got: %s\n"
"!!! Expected: %s\n") % \
(reason[1], reason[2]), noiselevel=-1)
if reason[0] == _("Insufficient data for checksum verification"):
return 0
if distdir_writable:
temp_filename = \
_checksum_failure_temp_file(
mysettings["DISTDIR"], myfile)
writemsg_stdout(_("Refetching... "
"File renamed to '%s'\n\n") % \
temp_filename, noiselevel=-1)
else:
eout = EOutput()
eout.quiet = \
mysettings.get("PORTAGE_QUIET", None) == "1"
digests = mydigests.get(myfile)
if digests:
digests = list(digests)
digests.sort()
eout.ebegin(
"%s %s ;-)" % (myfile, " ".join(digests)))
eout.eend(0)
continue # fetch any remaining files
if use_twrapper_to_download:
#check for duplicates
has_duplicate=0
for cur_pkg in idfetch_pkg_list:
for cur_distfile in cur_pkg['distfile_list']:
if cur_distfile['name']==myfile:
has_duplicate=1
break
if has_duplicate:
break;
if not(has_duplicate):
idfetch_distfile=dict()
idfetch_distfile['name']=myfile
idfetch_distfile['url_list']=filedict[myfile][:]
if restrict_fetch and not(filedict[myfile]):
idfetch_distfile['myuri']=myuri
msg = _("\n!!! %s/%s"
" has fetch restriction turned on.\n"
"!!! This probably means that this "
"ebuild's files must be downloaded\n"
"!!! manually. See the comments in"
" the ebuild for more information.\n\n") % \
(mysettings["CATEGORY"], mysettings["PF"])
writemsg_level(msg,
level=logging.ERROR, noiselevel=-1)
print("*** Download file",myuri," manually and place it in "+mysettings["DISTDIR"]+"\n")
for field in mydigests[myfile]:
idfetch_distfile[field]=mydigests[myfile][field]
idfetch_pkg['distfile_list'].append(idfetch_distfile)
continue
# Create a reversed list since that is optimal for list.pop().
uri_list = filedict[myfile][:]
uri_list.reverse()
checksum_failure_count = 0
tried_locations = set()
while uri_list:
loc = uri_list.pop()
# Eliminate duplicates here in case we've switched to
# "primaryuri" mode on the fly due to a checksum failure.
if loc in tried_locations:
continue
tried_locations.add(loc)
if listonly:
writemsg_stdout(loc+" ", noiselevel=-1)
continue
# allow different fetchcommands per protocol
protocol = loc[0:loc.find("://")]
missing_file_param = False
fetchcommand_var = "FETCHCOMMAND_" + protocol.upper()
fetchcommand = mysettings.get(fetchcommand_var)
if fetchcommand is None:
fetchcommand_var = "FETCHCOMMAND"
fetchcommand = mysettings.get(fetchcommand_var)
if fetchcommand is None:
writemsg_level(
_("!!! %s is unset. It should "
"have been defined in\n!!! %s/make.globals.\n") \
% (fetchcommand_var, GLOBAL_CONFIG_PATH),
level=logging.ERROR, noiselevel=-1)
return 0
if "${FILE}" not in fetchcommand:
writemsg_level(
_("!!! %s does not contain the required ${FILE}"
" parameter.\n") % fetchcommand_var,
level=logging.ERROR, noiselevel=-1)
missing_file_param = True
resumecommand_var = "RESUMECOMMAND_" + protocol.upper()
resumecommand = mysettings.get(resumecommand_var)
if resumecommand is None:
resumecommand_var = "RESUMECOMMAND"
resumecommand = mysettings.get(resumecommand_var)
if resumecommand is None:
writemsg_level(
_("!!! %s is unset. It should "
"have been defined in\n!!! %s/make.globals.\n") \
% (resumecommand_var, GLOBAL_CONFIG_PATH),
level=logging.ERROR, noiselevel=-1)
return 0
if "${FILE}" not in resumecommand:
writemsg_level(
_("!!! %s does not contain the required ${FILE}"
" parameter.\n") % resumecommand_var,
level=logging.ERROR, noiselevel=-1)
missing_file_param = True
if missing_file_param:
writemsg_level(
_("!!! Refer to the make.conf(5) man page for "
"information about how to\n!!! correctly specify "
"FETCHCOMMAND and RESUMECOMMAND.\n"),
level=logging.ERROR, noiselevel=-1)
if myfile != os.path.basename(loc):
return 0
if not can_fetch:
if fetched != 2:
try:
mysize = os.stat(myfile_path).st_size
except OSError as e:
if e.errno not in (errno.ENOENT, errno.ESTALE):
raise
del e
mysize = 0
if mysize == 0:
writemsg(_("!!! File %s isn't fetched but unable to get it.\n") % myfile,
noiselevel=-1)
elif size is None or size > mysize:
writemsg(_("!!! File %s isn't fully fetched, but unable to complete it\n") % myfile,
noiselevel=-1)
else:
writemsg(_("!!! File %s is incorrect size, "
"but unable to retry.\n") % myfile, noiselevel=-1)
return 0
else:
continue
if fetched != 2 and has_space:
#we either need to resume or start the download
if fetched == 1:
try:
mystat = os.stat(myfile_path)
except OSError as e:
if e.errno not in (errno.ENOENT, errno.ESTALE):
raise
del e
fetched = 0
else:
if mystat.st_size < fetch_resume_size:
writemsg(_(">>> Deleting distfile with size "
"%d (smaller than " "PORTAGE_FETCH_RESU"
"ME_MIN_SIZE)\n") % mystat.st_size)
try:
os.unlink(myfile_path)
except OSError as e:
if e.errno not in \
(errno.ENOENT, errno.ESTALE):
raise
del e
fetched = 0
if fetched == 1:
#resume mode:
writemsg(_(">>> Resuming download...\n"))
locfetch=resumecommand
command_var = resumecommand_var
else:
#normal mode:
locfetch=fetchcommand
command_var = fetchcommand_var
writemsg_stdout(_(">>> Downloading '%s'\n") % \
re.sub(r'//(.+):.+@(.+)/',r'//\1:*password*@\2/', loc))
variables = {
"DISTDIR": mysettings["DISTDIR"],
"URI": loc,
"FILE": myfile
}
myfetch = shlex_split(locfetch)
myfetch = [varexpand(x, mydict=variables) for x in myfetch]
myret = -1
try:
myret = _spawn_fetch(mysettings, myfetch)
finally:
try:
apply_secpass_permissions(myfile_path,
gid=portage_gid, mode=0o664, mask=0o2)
except FileNotFound:
pass
except PortageException as e:
if not os.access(myfile_path, os.R_OK):
writemsg(_("!!! Failed to adjust permissions:"
" %s\n") % str(e), noiselevel=-1)
del e
# If the file is empty then it's obviously invalid. Don't
# trust the return value from the fetcher. Remove the
# empty file and try to download again.
try:
if os.stat(myfile_path).st_size == 0:
os.unlink(myfile_path)
fetched = 0
continue
except EnvironmentError:
pass
if mydigests is not None and myfile in mydigests:
try:
mystat = os.stat(myfile_path)
except OSError as e:
if e.errno not in (errno.ENOENT, errno.ESTALE):
raise
del e
fetched = 0
else:
if stat.S_ISDIR(mystat.st_mode):
# This can happen if FETCHCOMMAND erroneously
# contains wget's -P option where it should
# instead have -O.
writemsg_level(
_("!!! The command specified in the "
"%s variable appears to have\n!!! "
"created a directory instead of a "
"normal file.\n") % command_var,
level=logging.ERROR, noiselevel=-1)
writemsg_level(
_("!!! Refer to the make.conf(5) "
"man page for information about how "
"to\n!!! correctly specify "
"FETCHCOMMAND and RESUMECOMMAND.\n"),
level=logging.ERROR, noiselevel=-1)
return 0
# no exception? file exists. let digestcheck() report
# an appropriately for size or checksum errors
# If the fetcher reported success and the file is
# too small, it's probably because the digest is
# bad (upstream changed the distfile). In this
# case we don't want to attempt to resume. Show a
# digest verification failure to that the user gets
# a clue about what just happened.
if myret != os.EX_OK and \
mystat.st_size < mydigests[myfile]["size"]:
# Fetch failed... Try the next one... Kill 404 files though.
if (mystat[stat.ST_SIZE]<100000) and (len(myfile)>4) and not ((myfile[-5:]==".html") or (myfile[-4:]==".htm")):
html404=re.compile("<title>.*(not found|404).*</title>",re.I|re.M)
if html404.search(codecs.open(
_unicode_encode(myfile_path,
encoding=_encodings['fs'], errors='strict'),
mode='r', encoding=_encodings['content'], errors='replace'
).read()):
try:
os.unlink(mysettings["DISTDIR"]+"/"+myfile)
writemsg(_(">>> Deleting invalid distfile. (Improper 404 redirect from server.)\n"))
fetched = 0
continue
except (IOError, OSError):
pass
fetched = 1
continue
if True:
# File is the correct size--check the checksums for the fetched
# file NOW, for those users who don't have a stable/continuous
# net connection. This way we have a chance to try to download
# from another mirror...
verified_ok,reason = verify_all(mysettings["DISTDIR"]+"/"+myfile, mydigests[myfile])
if not verified_ok:
print(reason)
writemsg(_("!!! Fetched file: %s VERIFY FAILED!\n") % myfile,
noiselevel=-1)
writemsg(_("!!! Reason: %s\n") % reason[0],
noiselevel=-1)
writemsg(_("!!! Got: %s\n!!! Expected: %s\n") % \
(reason[1], reason[2]), noiselevel=-1)
if reason[0] == _("Insufficient data for checksum verification"):
return 0
temp_filename = \
_checksum_failure_temp_file(
mysettings["DISTDIR"], myfile)
writemsg_stdout(_("Refetching... "
"File renamed to '%s'\n\n") % \
temp_filename, noiselevel=-1)
fetched=0
checksum_failure_count += 1
if checksum_failure_count == \
checksum_failure_primaryuri:
# Switch to "primaryuri" mode in order
# to increase the probablility of
# of success.
primaryuris = \
primaryuri_dict.get(myfile)
if primaryuris:
uri_list.extend(
reversed(primaryuris))
if checksum_failure_count >= \
checksum_failure_max_tries:
break
else:
eout = EOutput()
eout.quiet = mysettings.get("PORTAGE_QUIET", None) == "1"
digests = mydigests.get(myfile)
if digests:
eout.ebegin("%s %s ;-)" % \
(myfile, " ".join(sorted(digests))))
eout.eend(0)
fetched=2
break
else:
if not myret:
fetched=2
break
elif mydigests!=None:
writemsg(_("No digest file available and download failed.\n\n"),
noiselevel=-1)
finally:
if use_locks and file_lock:
unlockfile(file_lock)
if listonly:
writemsg_stdout("\n", noiselevel=-1)
if fetched != 2:
if restrict_fetch and not restrict_fetch_msg:
restrict_fetch_msg = True
msg = _("\n!!! %s/%s"
" has fetch restriction turned on.\n"
"!!! This probably means that this "
"ebuild's files must be downloaded\n"
"!!! manually. See the comments in"
" the ebuild for more information.\n\n") % \
(mysettings["CATEGORY"], mysettings["PF"])
writemsg_level(msg,
level=logging.ERROR, noiselevel=-1)
have_builddir = "PORTAGE_BUILDDIR" in mysettings and \
os.path.isdir(mysettings["PORTAGE_BUILDDIR"])
global_tmpdir = mysettings["PORTAGE_TMPDIR"]
private_tmpdir = None
if not parallel_fetchonly and not have_builddir:
# When called by digestgen(), it's normal that
# PORTAGE_BUILDDIR doesn't exist. It's helpful
# to show the pkg_nofetch output though, so go
# ahead and create a temporary PORTAGE_BUILDDIR.
# Use a temporary config instance to avoid altering
# the state of the one that's been passed in.
mysettings = config(clone=mysettings)
try:
private_tmpdir = tempfile.mkdtemp("", "._portage_fetch_.",
global_tmpdir)
except OSError as e:
if e.errno != PermissionDenied.errno:
raise
raise PermissionDenied(global_tmpdir)
mysettings["PORTAGE_TMPDIR"] = private_tmpdir
mysettings.backup_changes("PORTAGE_TMPDIR")
debug = mysettings.get("PORTAGE_DEBUG") == "1"
doebuild_environment(mysettings["EBUILD"], "fetch",
mysettings["ROOT"], mysettings, debug, 1, None)
prepare_build_dirs(mysettings["ROOT"], mysettings, 0)
have_builddir = True
if not parallel_fetchonly and have_builddir:
# To spawn pkg_nofetch requires PORTAGE_BUILDDIR for
# ensuring sane $PWD (bug #239560) and storing elog
# messages. Therefore, calling code needs to ensure that
# PORTAGE_BUILDDIR is already clean and locked here.
# All the pkg_nofetch goes to stderr since it's considered
# to be an error message.
fd_pipes = {
0 : sys.stdin.fileno(),
1 : sys.stderr.fileno(),
2 : sys.stderr.fileno(),
}
ebuild_phase = mysettings.get("EBUILD_PHASE")
try:
mysettings["EBUILD_PHASE"] = "nofetch"
doebuild_spawn(_shell_quote(EBUILD_SH_BINARY) + \
" nofetch", mysettings, fd_pipes=fd_pipes)
finally:
if ebuild_phase is None:
mysettings.pop("EBUILD_PHASE", None)
else:
mysettings["EBUILD_PHASE"] = ebuild_phase
if private_tmpdir is not None:
shutil.rmtree(private_tmpdir)
elif restrict_fetch:
pass
elif listonly:
pass
elif not filedict[myfile]:
writemsg(_("Warning: No mirrors available for file"
" '%s'\n") % (myfile), noiselevel=-1)
else:
writemsg(_("!!! Couldn't download '%s'. Aborting.\n") % myfile,
noiselevel=-1)
if listonly:
continue
elif fetchonly:
failed_files.add(myfile)
continue
return 0
# TO-DO: wait for release of lock_file, create lock_file, save file, unlink lock_file
if use_twrapper_to_download:
try:
idfetch_pkg_list_file = open(idfetch_pkg_list_file_name,"w")
idfetch_pkg_list_file.write(json.dumps(idfetch_pkg_list, sort_keys=1, indent=4))
idfetch_pkg_list_file.close()
except:
print("Error saving tasks to: ",idfetch_pkg_list_file)
if failed_files:
return 0
return 1
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