Vieux plugin Python aux archives
This commit is contained in:
Pierre-Elliott Bécue
parent
3fb338e937
commit
1df9d480af
8 changed files with 0 additions and 0 deletions
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@ -1,683 +0,0 @@
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"""All Python Type client support for Bcfg2."""
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__revision__ = '$Revision$'
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import binascii
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from datetime import datetime
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import difflib
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import errno
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import grp
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import logging
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import os
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import pwd
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import shutil
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import stat
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import sys
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import time
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# py3k compatibility
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if sys.hexversion >= 0x03000000:
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unicode = str
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import Bcfg2.Client.Tools
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import Bcfg2.Options
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from Bcfg2.Client import XML
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log = logging.getLogger('python')
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# map between dev_type attribute and stat constants
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device_map = {'block': stat.S_IFBLK,
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'char': stat.S_IFCHR,
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'fifo': stat.S_IFIFO}
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def calcPerms(initial, perms):
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"""This compares ondisk permissions with specified ones."""
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pdisp = [{1:stat.S_ISVTX, 2:stat.S_ISGID, 4:stat.S_ISUID},
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{1:stat.S_IXUSR, 2:stat.S_IWUSR, 4:stat.S_IRUSR},
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{1:stat.S_IXGRP, 2:stat.S_IWGRP, 4:stat.S_IRGRP},
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{1:stat.S_IXOTH, 2:stat.S_IWOTH, 4:stat.S_IROTH}]
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tempperms = initial
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if len(perms) == 3:
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perms = '0%s' % (perms)
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pdigits = [int(perms[digit]) for digit in range(4)]
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for index in range(4):
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for (num, perm) in list(pdisp[index].items()):
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if pdigits[index] & num:
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tempperms |= perm
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return tempperms
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def normGid(entry):
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"""
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This takes a group name or gid and
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returns the corresponding gid or False.
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"""
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try:
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try:
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return int(entry.get('group'))
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except:
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return int(grp.getgrnam(entry.get('group'))[2])
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except (OSError, KeyError):
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log.error('GID normalization failed for %s. Does group %s exist?'
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% (entry.get('name'), entry.get('group')))
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return False
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def normUid(entry):
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"""
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This takes a user name or uid and
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returns the corresponding uid or False.
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"""
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try:
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try:
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return int(entry.get('owner'))
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except:
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return int(pwd.getpwnam(entry.get('owner'))[2])
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except (OSError, KeyError):
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log.error('UID normalization failed for %s. Does owner %s exist?'
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% (entry.get('name'), entry.get('owner')))
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return False
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def isString(strng, encoding):
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"""
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Returns true if the string contains no ASCII control characters
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and can be decoded from the specified encoding.
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"""
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for char in strng:
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if ord(char) < 9 or ord(char) > 13 and ord(char) < 32:
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return False
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try:
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strng.decode(encoding)
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return True
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except:
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return False
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class Python(Bcfg2.Client.Tools.Tool):
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"""Python File support code."""
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name = 'Python'
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__handles__ = [('Python', 'file'),
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('Python', None)]
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__req__ = {'Python': ['name']}
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# grab paranoid options from /etc/bcfg2.conf
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opts = {'ppath': Bcfg2.Options.PARANOID_PATH,
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'max_copies': Bcfg2.Options.PARANOID_MAX_COPIES}
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setup = Bcfg2.Options.OptionParser(opts)
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setup.parse([])
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ppath = setup['ppath']
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max_copies = setup['max_copies']
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def canInstall(self, entry):
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"""Check if entry is complete for installation."""
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if Bcfg2.Client.Tools.Tool.canInstall(self, entry):
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if (entry.tag,
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entry.get('type'),
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entry.text,
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entry.get('empty', 'false')) == ('Python',
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'file',
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None,
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'false'):
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return False
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return True
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else:
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return False
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def gatherCurrentData(self, entry):
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if entry.tag == 'Python' and entry.get('type') == 'file':
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try:
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ondisk = os.stat(entry.get('name'))
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except OSError:
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entry.set('current_exists', 'false')
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self.logger.debug("%s %s does not exist" %
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(entry.tag, entry.get('name')))
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return False
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try:
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entry.set('current_owner', str(ondisk[stat.ST_UID]))
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entry.set('current_group', str(ondisk[stat.ST_GID]))
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except (OSError, KeyError):
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pass
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entry.set('perms', str(oct(ondisk[stat.ST_MODE])[-4:]))
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def Verifydirectory(self, entry, modlist):
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"""Verify Path type='directory' entry."""
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if entry.get('perms') == None or \
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entry.get('owner') == None or \
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entry.get('group') == None:
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self.logger.error('Entry %s not completely specified. '
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'Try running bcfg2-lint.' % (entry.get('name')))
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return False
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while len(entry.get('perms', '')) < 4:
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entry.set('perms', '0' + entry.get('perms', ''))
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try:
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ondisk = os.stat(entry.get('name'))
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except OSError:
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entry.set('current_exists', 'false')
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self.logger.debug("%s %s does not exist" %
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(entry.tag, entry.get('name')))
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return False
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try:
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owner = str(ondisk[stat.ST_UID])
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group = str(ondisk[stat.ST_GID])
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except (OSError, KeyError):
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self.logger.error('User/Group resolution failed for path %s' % \
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entry.get('name'))
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owner = 'root'
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group = '0'
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finfo = os.stat(entry.get('name'))
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perms = oct(finfo[stat.ST_MODE])[-4:]
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if entry.get('mtime', '-1') != '-1':
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mtime = str(finfo[stat.ST_MTIME])
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else:
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mtime = '-1'
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pTrue = ((owner == str(normUid(entry))) and
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(group == str(normGid(entry))) and
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(perms == entry.get('perms')) and
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(mtime == entry.get('mtime', '-1')))
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pruneTrue = True
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ex_ents = []
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if entry.get('prune', 'false') == 'true' \
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and (entry.tag == 'Path' and entry.get('type') == 'directory'):
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# check for any extra entries when prune='true' attribute is set
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try:
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entries = ['/'.join([entry.get('name'), ent]) \
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for ent in os.listdir(entry.get('name'))]
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ex_ents = [e for e in entries if e not in modlist]
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if ex_ents:
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pruneTrue = False
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self.logger.debug("Directory %s contains extra entries:" % \
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entry.get('name'))
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self.logger.debug(ex_ents)
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nqtext = entry.get('qtext', '') + '\n'
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nqtext += "Directory %s contains extra entries:" % \
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entry.get('name')
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nqtext += ":".join(ex_ents)
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entry.set('qtest', nqtext)
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[entry.append(XML.Element('Prune', path=x)) \
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for x in ex_ents]
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except OSError:
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ex_ents = []
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pruneTrue = True
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if not pTrue:
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if owner != str(normUid(entry)):
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entry.set('current_owner', owner)
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self.logger.debug("%s %s ownership wrong" % \
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(entry.tag, entry.get('name')))
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nqtext = entry.get('qtext', '') + '\n'
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nqtext += "%s owner wrong. is %s should be %s" % \
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(entry.get('name'), owner, entry.get('owner'))
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entry.set('qtext', nqtext)
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if group != str(normGid(entry)):
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entry.set('current_group', group)
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self.logger.debug("%s %s group wrong" % \
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(entry.tag, entry.get('name')))
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nqtext = entry.get('qtext', '') + '\n'
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nqtext += "%s group is %s should be %s" % \
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(entry.get('name'), group, entry.get('group'))
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entry.set('qtext', nqtext)
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if perms != entry.get('perms'):
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entry.set('current_perms', perms)
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self.logger.debug("%s %s permissions are %s should be %s" %
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(entry.tag,
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entry.get('name'),
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perms,
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entry.get('perms')))
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nqtext = entry.get('qtext', '') + '\n'
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nqtext += "%s %s perms are %s should be %s" % \
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(entry.tag,
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entry.get('name'),
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perms,
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entry.get('perms'))
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entry.set('qtext', nqtext)
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if mtime != entry.get('mtime', '-1'):
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entry.set('current_mtime', mtime)
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self.logger.debug("%s %s mtime is %s should be %s" \
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% (entry.tag, entry.get('name'), mtime,
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entry.get('mtime')))
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nqtext = entry.get('qtext', '') + '\n'
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nqtext += "%s mtime is %s should be %s" % \
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(entry.get('name'), mtime, entry.get('mtime'))
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entry.set('qtext', nqtext)
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if entry.get('type') != 'file':
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nnqtext = entry.get('qtext')
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nnqtext += '\nInstall %s %s: (y/N) ' % (entry.get('type'),
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entry.get('name'))
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entry.set('qtext', nnqtext)
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return pTrue and pruneTrue
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def Installdirectory(self, entry):
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"""Install Path type='directory' entry."""
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if entry.get('perms') == None or \
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entry.get('owner') == None or \
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entry.get('group') == None:
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self.logger.error('Entry %s not completely specified. '
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'Try running bcfg2-lint.' % \
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(entry.get('name')))
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return False
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self.logger.info("Installing directory %s" % (entry.get('name')))
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try:
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fmode = os.lstat(entry.get('name'))
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if not stat.S_ISDIR(fmode[stat.ST_MODE]):
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self.logger.debug("Found a non-directory entry at %s" % \
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(entry.get('name')))
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try:
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os.unlink(entry.get('name'))
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exists = False
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except OSError:
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self.logger.info("Failed to unlink %s" % \
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(entry.get('name')))
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return False
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else:
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self.logger.debug("Found a pre-existing directory at %s" % \
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(entry.get('name')))
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exists = True
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except OSError:
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# stat failed
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exists = False
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if not exists:
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parent = "/".join(entry.get('name').split('/')[:-1])
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if parent:
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try:
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os.stat(parent)
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except:
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self.logger.debug('Creating parent path for directory %s' % (entry.get('name')))
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for idx in range(len(parent.split('/')[:-1])):
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current = '/'+'/'.join(parent.split('/')[1:2+idx])
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try:
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sloc = os.stat(current)
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except OSError:
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try:
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os.mkdir(current)
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continue
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except OSError:
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return False
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if not stat.S_ISDIR(sloc[stat.ST_MODE]):
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try:
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os.unlink(current)
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os.mkdir(current)
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except OSError:
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return False
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try:
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os.mkdir(entry.get('name'))
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except OSError:
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self.logger.error('Failed to create directory %s' % \
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(entry.get('name')))
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return False
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if entry.get('prune', 'false') == 'true' and entry.get("qtest"):
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for pent in entry.findall('Prune'):
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pname = pent.get('path')
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ulfailed = False
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if os.path.isdir(pname):
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self.logger.info("Not removing extra directory %s, "
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"please check and remove manually" % pname)
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continue
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try:
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self.logger.debug("Unlinking file %s" % pname)
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os.unlink(pname)
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except OSError:
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self.logger.error("Failed to unlink path %s" % pname)
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ulfailed = True
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if ulfailed:
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return False
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return self.Installpermissions(entry)
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def Verifyfile(self, entry, _):
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"""Verify Python type='file' entry."""
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# permissions check + content check
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permissionStatus = self.Verifydirectory(entry, _)
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tbin = False
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if entry.text == None and entry.get('empty', 'false') == 'false':
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self.logger.error("Cannot verify incomplete Python type='%s' %s" %
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(entry.get('type'), entry.get('name')))
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return False
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if entry.get('encoding', 'ascii') == 'base64':
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tempdata = binascii.a2b_base64(entry.text)
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tbin = True
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elif entry.get('empty', 'false') == 'true':
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tempdata = ''
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else:
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tempdata = entry.text
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if type(tempdata) == unicode:
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try:
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tempdata = tempdata.encode(self.setup['encoding'])
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except UnicodeEncodeError:
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e = sys.exc_info()[1]
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self.logger.error("Error encoding file %s:\n %s" % \
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(entry.get('name'), e))
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different = False
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content = None
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if not os.path.exists(entry.get("name")):
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# first, see if the target file exists at all; if not,
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# they're clearly different
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different = True
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content = ""
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else:
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# next, see if the size of the target file is different
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# from the size of the desired content
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try:
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estat = os.stat(entry.get('name'))
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except OSError:
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err = sys.exc_info()[1]
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self.logger.error("Failed to stat %s: %s" %
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(err.filename, err))
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return False
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if len(tempdata) != estat[stat.ST_SIZE]:
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different = True
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else:
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# finally, read in the target file and compare them
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# directly. comparison could be done with a checksum,
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# which might be faster for big binary files, but
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# slower for everything else
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try:
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content = open(entry.get('name')).read()
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except IOError:
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err = sys.exc_info()[1]
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self.logger.error("Failed to read %s: %s" %
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(err.filename, err))
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return False
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different = content != tempdata
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if different:
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if self.setup['interactive']:
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prompt = [entry.get('qtext', '')]
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if not tbin and content is None:
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# it's possible that we figured out the files are
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# different without reading in the local file. if
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# the supplied version of the file is not binary,
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# we now have to read in the local file to figure
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# out if _it_ is binary, and either include that
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# fact or the diff in our prompts for -I
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try:
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content = open(entry.get('name')).read()
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except IOError:
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err = sys.exc_info()[1]
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self.logger.error("Failed to read %s: %s" %
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(err.filename, err))
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return False
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if tbin or not isString(content, self.setup['encoding']):
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# don't compute diffs if the file is binary
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prompt.append('Binary file, no printable diff')
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else:
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diff = self._diff(content, tempdata,
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difflib.unified_diff,
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filename=entry.get("name"))
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if diff:
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udiff = '\n'.join(diff)
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try:
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prompt.append(udiff.decode(self.setup['encoding']))
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except UnicodeDecodeError:
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prompt.append("Binary file, no printable diff")
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else:
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prompt.append("Diff took too long to compute, no "
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"printable diff")
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prompt.append("Install %s %s: (y/N): " % (entry.tag,
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entry.get('name')))
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entry.set("qtext", "\n".join(prompt))
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if entry.get('sensitive', 'false').lower() != 'true':
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if content is None:
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# it's possible that we figured out the files are
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# different without reading in the local file. we
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# now have to read in the local file to figure out
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# if _it_ is binary, and either include the whole
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# file or the diff for reports
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try:
|
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content = open(entry.get('name')).read()
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except IOError:
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||||
err = sys.exc_info()[1]
|
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self.logger.error("Failed to read %s: %s" %
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(err.filename, err))
|
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return False
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if tbin or not isString(content, self.setup['encoding']):
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# don't compute diffs if the file is binary
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entry.set('current_bfile', binascii.b2a_base64(content))
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else:
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diff = self._diff(content, tempdata, difflib.ndiff,
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filename=entry.get("name"))
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if diff:
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entry.set("current_bdiff",
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binascii.b2a_base64("\n".join(diff)))
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elif not tbin and isString(content, self.setup['encoding']):
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entry.set('current_bfile', binascii.b2a_base64(content))
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elif permissionStatus == False and self.setup['interactive']:
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prompt = [entry.get('qtext', '')]
|
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prompt.append("Install %s %s: (y/N): " % (entry.tag,
|
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entry.get('name')))
|
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entry.set("qtext", "\n".join(prompt))
|
||||
|
||||
|
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return permissionStatus and not different
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def Installfile(self, entry):
|
||||
"""Install Python type='file' entry."""
|
||||
self.logger.info("Installing file %s" % (entry.get('name')))
|
||||
|
||||
parent = "/".join(entry.get('name').split('/')[:-1])
|
||||
if parent:
|
||||
try:
|
||||
os.stat(parent)
|
||||
except:
|
||||
self.logger.debug('Creating parent path for config file %s' % \
|
||||
(entry.get('name')))
|
||||
current = '/'
|
||||
for next in parent.split('/')[1:]:
|
||||
current += next + '/'
|
||||
try:
|
||||
sloc = os.stat(current)
|
||||
try:
|
||||
if not stat.S_ISDIR(sloc[stat.ST_MODE]):
|
||||
self.logger.debug('%s is not a directory; recreating' \
|
||||
% (current))
|
||||
os.unlink(current)
|
||||
os.mkdir(current)
|
||||
except OSError:
|
||||
return False
|
||||
except OSError:
|
||||
try:
|
||||
self.logger.debug("Creating non-existent path %s" % current)
|
||||
os.mkdir(current)
|
||||
except OSError:
|
||||
return False
|
||||
|
||||
# If we get here, then the parent directory should exist
|
||||
if (entry.get("paranoid", False) in ['true', 'True']) and \
|
||||
self.setup.get("paranoid", False) and not \
|
||||
(entry.get('current_exists', 'true') == 'false'):
|
||||
bkupnam = entry.get('name').replace('/', '_')
|
||||
# current list of backups for this file
|
||||
try:
|
||||
bkuplist = [f for f in os.listdir(self.ppath) if
|
||||
f.startswith(bkupnam)]
|
||||
except OSError:
|
||||
e = sys.exc_info()[1]
|
||||
self.logger.error("Failed to create backup list in %s: %s" %
|
||||
(self.ppath, e.strerror))
|
||||
return False
|
||||
bkuplist.sort()
|
||||
while len(bkuplist) >= int(self.max_copies):
|
||||
# remove the oldest backup available
|
||||
oldest = bkuplist.pop(0)
|
||||
self.logger.info("Removing %s" % oldest)
|
||||
try:
|
||||
os.remove("%s/%s" % (self.ppath, oldest))
|
||||
except:
|
||||
self.logger.error("Failed to remove %s/%s" % \
|
||||
(self.ppath, oldest))
|
||||
return False
|
||||
try:
|
||||
# backup existing file
|
||||
shutil.copy(entry.get('name'),
|
||||
"%s/%s_%s" % (self.ppath, bkupnam,
|
||||
datetime.isoformat(datetime.now())))
|
||||
self.logger.info("Backup of %s saved to %s" %
|
||||
(entry.get('name'), self.ppath))
|
||||
except IOError:
|
||||
e = sys.exc_info()[1]
|
||||
self.logger.error("Failed to create backup file for %s" % \
|
||||
(entry.get('name')))
|
||||
self.logger.error(e)
|
||||
return False
|
||||
try:
|
||||
newfile = open("%s.new"%(entry.get('name')), 'w')
|
||||
if entry.get('encoding', 'ascii') == 'base64':
|
||||
filedata = binascii.a2b_base64(entry.text)
|
||||
elif entry.get('empty', 'false') == 'true':
|
||||
filedata = ''
|
||||
else:
|
||||
if type(entry.text) == unicode:
|
||||
filedata = entry.text.encode(self.setup['encoding'])
|
||||
else:
|
||||
filedata = entry.text
|
||||
newfile.write(filedata)
|
||||
newfile.close()
|
||||
try:
|
||||
os.chown(newfile.name, normUid(entry), normGid(entry))
|
||||
except KeyError:
|
||||
self.logger.error("Failed to chown %s to %s:%s" %
|
||||
(newfile.name, entry.get('owner'),
|
||||
entry.get('group')))
|
||||
os.chown(newfile.name, 0, 0)
|
||||
except OSError:
|
||||
err = sys.exc_info()[1]
|
||||
self.logger.error("Could not chown %s: %s" % (newfile.name,
|
||||
err))
|
||||
os.chmod(newfile.name, calcPerms(stat.S_IFREG, entry.get('perms')))
|
||||
os.rename(newfile.name, entry.get('name'))
|
||||
if entry.get('mtime', '-1') != '-1':
|
||||
try:
|
||||
os.utime(entry.get('name'), (int(entry.get('mtime')),
|
||||
int(entry.get('mtime'))))
|
||||
except:
|
||||
self.logger.error("File %s mtime fix failed" \
|
||||
% (entry.get('name')))
|
||||
return False
|
||||
return True
|
||||
except (OSError, IOError):
|
||||
err = sys.exc_info()[1]
|
||||
if err.errno == errno.EACCES:
|
||||
self.logger.info("Failed to open %s for writing" % (entry.get('name')))
|
||||
else:
|
||||
print(err)
|
||||
return False
|
||||
|
||||
def Verifypermissions(self, entry, _):
|
||||
"""Verify Path type='permissions' entry"""
|
||||
if entry.get('perms') == None or \
|
||||
entry.get('owner') == None or \
|
||||
entry.get('group') == None:
|
||||
self.logger.error('Entry %s not completely specified. '
|
||||
'Try running bcfg2-lint.' % (entry.get('name')))
|
||||
return False
|
||||
if entry.get('recursive') in ['True', 'true']:
|
||||
# verify ownership information recursively
|
||||
owner = normUid(entry)
|
||||
group = normGid(entry)
|
||||
|
||||
for root, dirs, files in os.walk(entry.get('name')):
|
||||
for p in dirs + files:
|
||||
path = os.path.join(root, p)
|
||||
pstat = os.stat(path)
|
||||
if owner != pstat.st_uid:
|
||||
# owner mismatch for path
|
||||
entry.set('current_owner', str(pstat.st_uid))
|
||||
self.logger.debug("%s %s ownership wrong" % \
|
||||
(entry.tag, path))
|
||||
nqtext = entry.get('qtext', '') + '\n'
|
||||
nqtext += ("Owner for path %s is incorrect. "
|
||||
"Current owner is %s but should be %s\n" % \
|
||||
(path, pstat.st_uid, entry.get('owner')))
|
||||
nqtext += ("\nInstall %s %s: (y/N): " %
|
||||
(entry.tag, entry.get('name')))
|
||||
entry.set('qtext', nqtext)
|
||||
return False
|
||||
if group != pstat.st_gid:
|
||||
# group mismatch for path
|
||||
entry.set('current_group', str(pstat.st_gid))
|
||||
self.logger.debug("%s %s group wrong" % \
|
||||
(entry.tag, path))
|
||||
nqtext = entry.get('qtext', '') + '\n'
|
||||
nqtext += ("Group for path %s is incorrect. "
|
||||
"Current group is %s but should be %s\n" % \
|
||||
(path, pstat.st_gid, entry.get('group')))
|
||||
nqtext += ("\nInstall %s %s: (y/N): " %
|
||||
(entry.tag, entry.get('name')))
|
||||
entry.set('qtext', nqtext)
|
||||
return False
|
||||
return self.Verifydirectory(entry, _)
|
||||
|
||||
def _diff(self, content1, content2, difffunc, filename=None):
|
||||
rv = []
|
||||
start = time.time()
|
||||
longtime = False
|
||||
for diffline in difffunc(content1.split('\n'),
|
||||
content2.split('\n')):
|
||||
now = time.time()
|
||||
rv.append(diffline)
|
||||
if now - start > 5 and not longtime:
|
||||
if filename:
|
||||
self.logger.info("Diff of %s taking a long time" %
|
||||
filename)
|
||||
else:
|
||||
self.logger.info("Diff taking a long time")
|
||||
longtime = True
|
||||
elif now - start > 30:
|
||||
if filename:
|
||||
self.logger.error("Diff of %s took too long; giving up" %
|
||||
filename)
|
||||
else:
|
||||
self.logger.error("Diff took too long; giving up")
|
||||
return False
|
||||
return rv
|
||||
|
||||
def Installpermissions(self, entry):
|
||||
"""Install POSIX permissions"""
|
||||
if entry.get('perms') == None or \
|
||||
entry.get('owner') == None or \
|
||||
entry.get('group') == None:
|
||||
self.logger.error('Entry %s not completely specified. '
|
||||
'Try running bcfg2-lint.' % (entry.get('name')))
|
||||
return False
|
||||
plist = [entry.get('name')]
|
||||
if entry.get('recursive') in ['True', 'true']:
|
||||
# verify ownership information recursively
|
||||
owner = normUid(entry)
|
||||
group = normGid(entry)
|
||||
|
||||
for root, dirs, files in os.walk(entry.get('name')):
|
||||
for p in dirs + files:
|
||||
path = os.path.join(root, p)
|
||||
pstat = os.stat(path)
|
||||
if owner != pstat.st_uid or group != pstat.st_gid:
|
||||
# owner mismatch for path
|
||||
plist.append(path)
|
||||
try:
|
||||
for p in plist:
|
||||
os.chown(p, normUid(entry), normGid(entry))
|
||||
os.chmod(p, calcPerms(stat.S_IFDIR, entry.get('perms')))
|
||||
return True
|
||||
except (OSError, KeyError):
|
||||
self.logger.error('Permission fixup failed for %s' % \
|
||||
(entry.get('name')))
|
||||
return False
|
||||
|
||||
def InstallNone(self, entry):
|
||||
return self.Installfile(entry)
|
||||
|
||||
def VerifyNone(self, entry, _):
|
||||
return self.Verifyfile(entry, _)
|
||||
|
||||
def InstallPython(self, entry):
|
||||
"""Dispatch install to the proper method according to type"""
|
||||
ret = getattr(self, 'Install%s' % entry.get('type'))
|
||||
return ret(entry)
|
||||
|
||||
def VerifyPython(self, entry, _):
|
||||
"""Dispatch verify to the proper method according to type"""
|
||||
ret = getattr(self, 'Verify%s' % entry.get('type'))
|
||||
return ret(entry, _)
|
||||
Loading…
Add table
Add a link
Reference in a new issue