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# Copyright 1999-2012 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
import errno
import io
import re
import stat
import sys
import warnings
from portage import os
from portage import _encodings
from portage import _unicode_decode
from portage import _unicode_encode
import portage
portage.proxy.lazyimport.lazyimport(globals(),
'portage.dep:Atom,dep_getkey,isvalidatom,_get_slot_re',
'portage.util:ConfigProtect,new_protect_filename,' + \
'normalize_path,write_atomic,writemsg',
'portage.util.listdir:_ignorecvs_dirs',
)
from portage.const import USER_CONFIG_PATH
from portage.dep import match_from_list
from portage.eapi import _get_eapi_attrs
from portage.exception import DirectoryNotFound, InvalidAtom, PortageException
from portage.localization import _
if sys.hexversion >= 0x3000000:
long = int
_unicode = str
else:
_unicode = unicode
ignored_dbentries = ("CONTENTS", "environment.bz2")
def update_dbentry(update_cmd, mycontent, eapi=None, parent=None):
if parent is not None:
eapi = parent.eapi
if update_cmd[0] == "move":
old_value = _unicode(update_cmd[1])
new_value = _unicode(update_cmd[2])
# Use isvalidatom() to check if this move is valid for the
# EAPI (characters allowed in package names may vary).
if old_value in mycontent and isvalidatom(new_value, eapi=eapi):
# this split preserves existing whitespace
split_content = re.split(r'(\s+)', mycontent)
modified = False
for i, token in enumerate(split_content):
if old_value not in token:
continue
try:
atom = Atom(token, eapi=eapi)
except InvalidAtom:
continue
if atom.cp != old_value:
continue
new_atom = Atom(token.replace(old_value, new_value, 1),
eapi=eapi)
# Avoid creating self-blockers for bug #367215.
if new_atom.blocker and parent is not None and \
parent.cp == new_atom.cp and \
match_from_list(new_atom, [parent]):
continue
split_content[i] = _unicode(new_atom)
modified = True
if modified:
mycontent = "".join(split_content)
elif update_cmd[0] == "slotmove" and update_cmd[1].operator is None:
orig_atom, origslot, newslot = update_cmd[1:]
orig_cp = orig_atom.cp
# We don't support versioned slotmove atoms here, since it can be
# difficult to determine if the version constraints really match
# the atoms that we're trying to update.
if orig_atom.version is None and orig_cp in mycontent:
# this split preserves existing whitespace
split_content = re.split(r'(\s+)', mycontent)
modified = False
for i, token in enumerate(split_content):
if orig_cp not in token:
continue
try:
atom = Atom(token, eapi=eapi)
except InvalidAtom:
continue
if atom.cp != orig_cp:
continue
if atom.slot is None or atom.slot != origslot:
continue
slot_part = newslot
if atom.sub_slot is not None:
if atom.sub_slot == origslot:
sub_slot = newslot
else:
sub_slot = atom.sub_slot
slot_part += "/" + sub_slot
if atom.slot_operator is not None:
slot_part += atom.slot_operator
split_content[i] = atom.with_slot(slot_part)
modified = True
if modified:
mycontent = "".join(split_content)
return mycontent
def update_dbentries(update_iter, mydata, eapi=None, parent=None):
"""Performs update commands and returns a
dict containing only the updated items."""
updated_items = {}
for k, mycontent in mydata.items():
k_unicode = _unicode_decode(k,
encoding=_encodings['repo.content'], errors='replace')
if k_unicode not in ignored_dbentries:
orig_content = mycontent
mycontent = _unicode_decode(mycontent,
encoding=_encodings['repo.content'], errors='replace')
is_encoded = mycontent is not orig_content
orig_content = mycontent
for update_cmd in update_iter:
mycontent = update_dbentry(update_cmd, mycontent,
eapi=eapi, parent=parent)
if mycontent != orig_content:
if is_encoded:
mycontent = _unicode_encode(mycontent,
encoding=_encodings['repo.content'],
errors='backslashreplace')
updated_items[k] = mycontent
return updated_items
def fixdbentries(update_iter, dbdir, eapi=None, parent=None):
"""Performs update commands which result in search and replace operations
for each of the files in dbdir (excluding CONTENTS and environment.bz2).
Returns True when actual modifications are necessary and False otherwise."""
warnings.warn("portage.update.fixdbentries() is deprecated",
DeprecationWarning, stacklevel=2)
mydata = {}
for myfile in [f for f in os.listdir(dbdir) if f not in ignored_dbentries]:
file_path = os.path.join(dbdir, myfile)
with io.open(_unicode_encode(file_path,
encoding=_encodings['fs'], errors='strict'),
mode='r', encoding=_encodings['repo.content'],
errors='replace') as f:
mydata[myfile] = f.read()
updated_items = update_dbentries(update_iter, mydata,
eapi=eapi, parent=parent)
for myfile, mycontent in updated_items.items():
file_path = os.path.join(dbdir, myfile)
write_atomic(file_path, mycontent, encoding=_encodings['repo.content'])
return len(updated_items) > 0
def grab_updates(updpath, prev_mtimes=None):
"""Returns all the updates from the given directory as a sorted list of
tuples, each containing (file_path, statobj, content). If prev_mtimes is
given then updates are only returned if one or more files have different
mtimes. When a change is detected for a given file, updates will be
returned for that file and any files that come after it in the entire
sequence. This ensures that all relevant updates are returned for cases
in which the destination package of an earlier move corresponds to
the source package of a move that comes somewhere later in the entire
sequence of files.
"""
try:
mylist = os.listdir(updpath)
except OSError as oe:
if oe.errno == errno.ENOENT:
raise DirectoryNotFound(updpath)
raise
if prev_mtimes is None:
prev_mtimes = {}
# validate the file name (filter out CVS directory, etc...)
mylist = [myfile for myfile in mylist if len(myfile) == 7 and myfile[1:3] == "Q-"]
if len(mylist) == 0:
return []
# update names are mangled to make them sort properly
mylist = [myfile[3:]+"-"+myfile[:2] for myfile in mylist]
mylist.sort()
mylist = [myfile[5:]+"-"+myfile[:4] for myfile in mylist]
update_data = []
for myfile in mylist:
file_path = os.path.join(updpath, myfile)
mystat = os.stat(file_path)
if update_data or \
file_path not in prev_mtimes or \
long(prev_mtimes[file_path]) != mystat[stat.ST_MTIME]:
f = io.open(_unicode_encode(file_path,
encoding=_encodings['fs'], errors='strict'),
mode='r', encoding=_encodings['repo.content'], errors='replace')
content = f.read()
f.close()
update_data.append((file_path, mystat, content))
return update_data
def parse_updates(mycontent):
"""Valid updates are returned as a list of split update commands."""
eapi_attrs = _get_eapi_attrs(None)
slot_re = _get_slot_re(eapi_attrs)
myupd = []
errors = []
mylines = mycontent.splitlines()
for myline in mylines:
mysplit = myline.split()
if len(mysplit) == 0:
continue
if mysplit[0] not in ("move", "slotmove"):
errors.append(_("ERROR: Update type not recognized '%s'") % myline)
continue
if mysplit[0] == "move":
if len(mysplit) != 3:
errors.append(_("ERROR: Update command invalid '%s'") % myline)
continue
valid = True
for i in (1, 2):
try:
atom = Atom(mysplit[i])
except InvalidAtom:
atom = None
else:
if atom.blocker or atom != atom.cp:
atom = None
if atom is not None:
mysplit[i] = atom
else:
errors.append(
_("ERROR: Malformed update entry '%s'") % myline)
valid = False
break
if not valid:
continue
if mysplit[0] == "slotmove":
if len(mysplit)!=4:
errors.append(_("ERROR: Update command invalid '%s'") % myline)
continue
pkg, origslot, newslot = mysplit[1], mysplit[2], mysplit[3]
try:
atom = Atom(pkg)
except InvalidAtom:
atom = None
else:
if atom.blocker:
atom = None
if atom is not None:
mysplit[1] = atom
else:
errors.append(_("ERROR: Malformed update entry '%s'") % myline)
continue
invalid_slot = False
for slot in (origslot, newslot):
m = slot_re.match(slot)
if m is None:
invalid_slot = True
break
if "/" in slot:
# EAPI 4-slot-abi style SLOT is currently not supported.
invalid_slot = True
break
if invalid_slot:
errors.append(_("ERROR: Malformed update entry '%s'") % myline)
continue
# The list of valid updates is filtered by continue statements above.
myupd.append(mysplit)
return myupd, errors
def update_config_files(config_root, protect, protect_mask, update_iter, match_callback = None):
"""Perform global updates on /etc/portage/package.*.
config_root - location of files to update
protect - list of paths from CONFIG_PROTECT
protect_mask - list of paths from CONFIG_PROTECT_MASK
update_iter - list of update commands as returned from parse_updates(),
or dict of {repo_name: list}
match_callback - a callback which will be called with three arguments:
match_callback(repo_name, old_atom, new_atom)
and should return boolean value determining whether to perform the update"""
repo_dict = None
if isinstance(update_iter, dict):
repo_dict = update_iter
if match_callback is None:
def match_callback(repo_name, atoma, atomb):
return True
config_root = normalize_path(config_root)
update_files = {}
file_contents = {}
myxfiles = [
"package.accept_keywords", "package.env",
"package.keywords", "package.license",
"package.mask", "package.properties",
"package.unmask", "package.use"
]
myxfiles += [os.path.join("profile", x) for x in myxfiles]
abs_user_config = os.path.join(config_root, USER_CONFIG_PATH)
recursivefiles = []
for x in myxfiles:
config_file = os.path.join(abs_user_config, x)
if os.path.isdir(config_file):
for parent, dirs, files in os.walk(config_file):
try:
parent = _unicode_decode(parent,
encoding=_encodings['fs'], errors='strict')
except UnicodeDecodeError:
continue
for y_enc in list(dirs):
try:
y = _unicode_decode(y_enc,
encoding=_encodings['fs'], errors='strict')
except UnicodeDecodeError:
dirs.remove(y_enc)
continue
if y.startswith(".") or y in _ignorecvs_dirs:
dirs.remove(y_enc)
for y in files:
try:
y = _unicode_decode(y,
encoding=_encodings['fs'], errors='strict')
except UnicodeDecodeError:
continue
if y.startswith("."):
continue
recursivefiles.append(
os.path.join(parent, y)[len(abs_user_config) + 1:])
else:
recursivefiles.append(x)
myxfiles = recursivefiles
for x in myxfiles:
f = None
try:
f = io.open(
_unicode_encode(os.path.join(abs_user_config, x),
encoding=_encodings['fs'], errors='strict'),
mode='r', encoding=_encodings['content'],
errors='replace')
file_contents[x] = f.readlines()
except IOError:
continue
finally:
if f is not None:
f.close()
# update /etc/portage/packages.*
ignore_line_re = re.compile(r'^#|^\s*$')
if repo_dict is None:
update_items = [(None, update_iter)]
else:
update_items = [x for x in repo_dict.items() if x[0] != 'DEFAULT']
for repo_name, update_iter in update_items:
for update_cmd in update_iter:
for x, contents in file_contents.items():
skip_next = False
for pos, line in enumerate(contents):
if skip_next:
skip_next = False
continue
if ignore_line_re.match(line):
continue
atom = line.split()[0]
if atom[:1] == "-":
# package.mask supports incrementals
atom = atom[1:]
if not isvalidatom(atom):
continue
new_atom = update_dbentry(update_cmd, atom)
if atom != new_atom:
if match_callback(repo_name, atom, new_atom):
# add a comment with the update command, so
# the user can clearly see what happened
contents[pos] = "# %s\n" % \
" ".join("%s" % (x,) for x in update_cmd)
contents.insert(pos + 1,
line.replace("%s" % (atom,),
"%s" % (new_atom,), 1))
# we've inserted an additional line, so we need to
# skip it when it's reached in the next iteration
skip_next = True
update_files[x] = 1
sys.stdout.write("p")
sys.stdout.flush()
protect_obj = ConfigProtect(
config_root, protect, protect_mask)
for x in update_files:
updating_file = os.path.join(abs_user_config, x)
if protect_obj.isprotected(updating_file):
updating_file = new_protect_filename(updating_file)
try:
write_atomic(updating_file, "".join(file_contents[x]))
except PortageException as e:
writemsg("\n!!! %s\n" % str(e), noiselevel=-1)
writemsg(_("!!! An error occurred while updating a config file:") + \
" '%s'\n" % updating_file, noiselevel=-1)
continue
def dep_transform(mydep, oldkey, newkey):
if dep_getkey(mydep) == oldkey:
return mydep.replace(oldkey, newkey, 1)
return mydep
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