/usr/share/pyshared/rdiff_backup/FilenameMapping.py is in rdiff-backup 1.2.8-7.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 | # Copyright 2002, 2003 Ben Escoto
#
# This file is part of rdiff-backup.
#
# rdiff-backup is free software; you can redistribute it and/or modify
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2 of the License, or (at your
# option) any later version.
#
# rdiff-backup is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with rdiff-backup; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
# USA
"""Coordinate corresponding files with different names
For instance, some source filenames may contain characters not allowed
on the mirror end. These files must be called something different on
the mirror end, so we escape the offending characters with semicolons.
One problem/complication is that all this escaping may put files over
the 256 or whatever limit on the length of file names. (We just don't
handle that error.)
"""
from __future__ import generators
import os, re, types
import Globals, log, rpath
# If true, enable character quoting, and set characters making
# regex-style range.
chars_to_quote = None
# These compiled regular expressions are used in quoting and unquoting
chars_to_quote_regexp = None
unquoting_regexp = None
# Use given char to quote. Default is set in Globals.
quoting_char = None
class QuotingException(Exception): pass
def set_init_quote_vals():
"""Set quoting value from Globals on all conns"""
for conn in Globals.connections:
conn.FilenameMapping.set_init_quote_vals_local()
def set_init_quote_vals_local():
"""Set value on local connection, initialize regexps"""
global chars_to_quote, quoting_char
chars_to_quote = Globals.chars_to_quote
if len(Globals.quoting_char) != 1:
log.Log.FatalError("Expected single character for quoting char,"
"got '%s' instead" % (Globals.quoting_char,))
quoting_char = Globals.quoting_char
init_quoting_regexps()
def init_quoting_regexps():
"""Compile quoting regular expressions"""
global chars_to_quote_regexp, unquoting_regexp
assert chars_to_quote and type(chars_to_quote) is types.StringType, \
"Chars to quote: '%s'" % (chars_to_quote,)
try:
chars_to_quote_regexp = \
re.compile("[%s]|%s" % (chars_to_quote, quoting_char), re.S)
unquoting_regexp = re.compile("%s[0-9]{3}" % quoting_char, re.S)
except re.error:
log.Log.FatalError("Error '%s' when processing char quote list %r" %
(re.error, chars_to_quote))
def quote(path):
"""Return quoted version of given path
Any characters quoted will be replaced by the quoting char and
the ascii number of the character. For instance, "10:11:12"
would go to "10;05811;05812" if ":" were quoted and ";" were
the quoting character.
"""
QuotedPath = chars_to_quote_regexp.sub(quote_single, path)
if not Globals.must_escape_dos_devices \
and not Globals.must_escape_trailing_spaces:
return QuotedPath
# Escape a trailing space or period (invalid in names on FAT32 under DOS,
# Windows and modern Linux)
if Globals.must_escape_trailing_spaces:
if len(QuotedPath) and (QuotedPath[-1] == ' ' or QuotedPath[-1] == '.'):
QuotedPath = QuotedPath[:-1] + \
"%s%03d" % (quoting_char, ord(QuotedPath[-1]))
if not Globals.must_escape_dos_devices:
return QuotedPath
# Escape first char of any special DOS device files even if filename has an
# extension. Special names are: aux, prn, con, nul, com0-9, and lpt1-9.
if not re.search(r"^aux(\..*)*$|^prn(\..*)*$|^con(\..*)*$|^nul(\..*)*$|" \
r"^com[0-9](\..*)*$|^lpt[1-9]{1}(\..*)*$", QuotedPath, \
re.I):
return QuotedPath
return "%s%03d" % (quoting_char, ord(QuotedPath[0])) + QuotedPath[1:]
def quote_single(match):
"""Return replacement for a single character"""
return "%s%03d" % (quoting_char, ord(match.group()))
def unquote(path):
"""Return original version of quoted filename"""
return unquoting_regexp.sub(unquote_single, path)
def unquote_single(match):
"""Unquote a single quoted character"""
if not len(match.group()) == 4:
raise QuotingException("Quoted group wrong size: " + match.group())
try: return chr(int(match.group()[1:]))
except ValueError:
raise QuotingException("Quoted out of range: " + match.group())
class QuotedRPath(rpath.RPath):
"""RPath where the filename is quoted version of index
We use QuotedRPaths so we don't need to remember to quote RPaths
derived from this one (via append or new_index). Note that only
the index is quoted, not the base.
"""
def __init__(self, connection, base, index = (), data = None):
"""Make new QuotedRPath"""
self.quoted_index = tuple(map(quote, index))
self.conn = connection
self.index = index
self.base = base
if base is not None:
if base == "/": self.path = "/" + "/".join(self.quoted_index)
else: self.path = "/".join((base,) + self.quoted_index)
self.file = None
if data or base is None: self.data = data
else: self.setdata()
def __setstate__(self, rpath_state):
"""Reproduce QuotedRPath from __getstate__ output"""
conn_number, self.base, self.index, self.data = rpath_state
self.conn = Globals.connection_dict[conn_number]
self.quoted_index = tuple(map(quote, self.index))
self.path = "/".join((self.base,) + self.quoted_index)
def listdir(self):
"""Return list of unquoted filenames in current directory
We want them unquoted so that the results can be sorted
correctly and append()ed to the currect QuotedRPath.
"""
return map(unquote, self.conn.os.listdir(self.path))
def __str__(self):
return "QuotedPath: %s\nIndex: %s\nData: %s" % \
(self.path, self.index, self.data)
def isincfile(self):
"""Return true if path indicates increment, sets various variables"""
if not self.index: # consider the last component as quoted
dirname, basename = self.dirsplit()
temp_rp = rpath.RPath(self.conn, dirname, (unquote(basename),))
result = temp_rp.isincfile()
if result:
self.inc_basestr = unquote(temp_rp.inc_basestr)
self.inc_timestr = unquote(temp_rp.inc_timestr)
else:
result = rpath.RPath.isincfile(self)
if result: self.inc_basestr = unquote(self.inc_basestr)
return result
def get_quotedrpath(rp, separate_basename = 0):
"""Return quoted version of rpath rp"""
assert not rp.index # Why would we starting quoting "in the middle"?
if separate_basename:
dirname, basename = rp.dirsplit()
return QuotedRPath(rp.conn, dirname, (unquote(basename),), rp.data)
else: return QuotedRPath(rp.conn, rp.base, (), rp.data)
def get_quoted_sep_base(filename):
"""Get QuotedRPath from filename assuming last bit is quoted"""
return get_quotedrpath(rpath.RPath(Globals.local_connection, filename), 1)
def update_quoting(rbdir):
"""Update the quoting of a repository by renaming any
files that should be quoted differently.
"""
def requote(name):
unquoted_name = unquote(name)
quoted_name = quote(unquoted_name)
if name != quoted_name:
return quoted_name
else:
return None
def process(dirpath_rp, name, list):
new_name = requote(name)
if new_name:
if list:
list.remove(name)
list.append(new_name)
name_rp = dirpath_rp.append(name)
new_rp = dirpath_rp.append(new_name)
log.Log("Re-quoting %s to %s" % (name_rp.path, new_rp.path), 5)
rpath.move(name_rp, new_rp)
assert rbdir.conn is Globals.local_connection
mirror_rp = rbdir.get_parent_rp()
mirror = mirror_rp.path
log.Log("Re-quoting repository %s" % mirror_rp.path, 3)
try:
os_walk = os.walk
except AttributeError:
os_walk = walk
for dirpath, dirs, files in os_walk(mirror):
dirpath_rp = mirror_rp.newpath(dirpath)
for name in dirs: process(dirpath_rp, name, dirs)
for name in files: process(dirpath_rp, name, None)
"""
os.walk() copied directly from Python 2.5.1's os.py
Backported here for Python 2.2 support. os.walk() was first added
in Python 2.3.
"""
def walk(top, topdown=True, onerror=None):
from os import error, listdir
from os.path import join, isdir, islink
# We may not have read permission for top, in which case we can't
# get a list of the files the directory contains. os.path.walk
# always suppressed the exception then, rather than blow up for a
# minor reason when (say) a thousand readable directories are still
# left to visit. That logic is copied here.
try:
# Note that listdir and error are globals in this module due
# to earlier import-*.
names = listdir(top)
except error, err:
if onerror is not None:
onerror(err)
return
dirs, nondirs = [], []
for name in names:
if isdir(join(top, name)):
dirs.append(name)
else:
nondirs.append(name)
if topdown:
yield top, dirs, nondirs
for name in dirs:
path = join(top, name)
if not islink(path):
for x in walk(path, topdown, onerror):
yield x
if not topdown:
yield top, dirs, nondirs
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