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# Copyright 1999-2009 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
import codecs
import errno
import re
import stat
import sys
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,get_operator,isjustname,isvalidatom,' + \
'remove_slot',
'portage.util:ConfigProtect,grabfile,new_protect_filename,' + \
'normalize_path,write_atomic,writemsg',
'portage.versions:ververify'
)
from portage.const import USER_CONFIG_PATH
from portage.exception import DirectoryNotFound, InvalidAtom, PortageException
from portage.localization import _
if sys.hexversion >= 0x3000000:
long = int
ignored_dbentries = ("CONTENTS", "environment.bz2")
def update_dbentry(update_cmd, mycontent):
if update_cmd[0] == "move":
old_value = str(update_cmd[1])
if old_value in mycontent:
new_value = str(update_cmd[2])
old_value = re.escape(old_value);
mycontent = re.sub(old_value+"(:|$|\\s)", new_value+"\\1", mycontent)
def myreplace(matchobj):
# Strip slot and * operator if necessary
# so that ververify works.
ver = remove_slot(matchobj.group(2))
ver = ver.rstrip("*")
if ververify(ver):
return "%s-%s" % (new_value, matchobj.group(2))
else:
return "".join(matchobj.groups())
mycontent = re.sub("(%s-)(\\S*)" % old_value, myreplace, mycontent)
elif update_cmd[0] == "slotmove" and update_cmd[1].operator is None:
pkg, origslot, newslot = update_cmd[1:]
old_value = "%s:%s" % (pkg, origslot)
if old_value in mycontent:
old_value = re.escape(old_value)
new_value = "%s:%s" % (pkg, newslot)
mycontent = re.sub(old_value+"($|\\s)", new_value+"\\1", mycontent)
return mycontent
def update_dbentries(update_iter, mydata):
"""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)
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):
"""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."""
mydata = {}
for myfile in [f for f in os.listdir(dbdir) if f not in ignored_dbentries]:
file_path = os.path.join(dbdir, myfile)
mydata[myfile] = codecs.open(_unicode_encode(file_path,
encoding=_encodings['fs'], errors='strict'),
mode='r', encoding=_encodings['repo.content'],
errors='replace').read()
updated_items = update_dbentries(update_iter, mydata)
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 only updates with differing mtimes are considered."""
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 file_path not in prev_mtimes or \
long(prev_mtimes[file_path]) != mystat[stat.ST_MTIME]:
content = codecs.open(_unicode_encode(file_path,
encoding=_encodings['fs'], errors='strict'),
mode='r', encoding=_encodings['repo.content'], errors='replace'
).read()
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."""
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
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)
break
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
# 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()
match_callback - a callback which will be called with old and new atoms
and should return boolean value determining whether to perform the update"""
config_root = normalize_path(config_root)
update_files = {}
file_contents = {}
myxfiles = ["package.mask", "package.unmask", \
"package.keywords", "package.license", "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("."):
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:
try:
file_contents[x] = codecs.open(
_unicode_encode(os.path.join(abs_user_config, x),
encoding=_encodings['fs'], errors='strict'),
mode='r', encoding=_encodings['content'],
errors='replace').readlines()
except IOError:
continue
# update /etc/portage/packages.*
ignore_line_re = re.compile(r'^#|^\s*$')
for update_cmd in update_iter:
for x, contents in file_contents.items():
for pos, line in enumerate(contents):
if ignore_line_re.match(line):
continue
atom = line.split()[0]
if atom.startswith("-"):
# 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(atom, new_atom):
contents[pos] = line.replace(atom, new_atom)
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 occured 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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