csbackchk.py 7.23 KB
Newer Older
1
2
#!/usr/bin/env python
## @file csbackchk.py
3
# @brief Check checksums or rather integrity of corresponding files. 
4
5
6
7
8
# 
# -----------------------------------------------------------------------------
# 
# $Id$
# @author Daniel Armbruster
9
# \date 03/01/2012
10
# 
11
# Purpose: Check checksums or rather integrity of corresponding files.
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
#
# ----
# This file is part of csback.
#
# csback is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# 
# csback 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 csback.  If not, see <http://www.gnu.org/licenses/>.
# ----
# 
30
# Copyright (c) 2012 by Daniel Armbruster
31
32
# 
# REVISIONS and CHANGES 
33
# 03/01/2012  V0.1  Daniel Armbruster
34
35
36
# 
# =============================================================================
 
37
38
39
40
41
42
43
import getopt
import os
import sys
import pwd
import logging
import logging.config
import csfile
44

45
46
47
48
49
__version__ = "V0.1"
__subversion__ = "$Id$"
__license__ = "GPLv2"
__author__ = "Daniel Armbruster"
__copyright__ = "Copyright (c) 2012 by Daniel Armbruster"
50

51
52
53
# -----------------------------------------------------------------------------
class Error(Exception):

54
55
  def __init__(self, line, msg):
    self.line = str(line)
56
57
58
59
    self.msg = msg

  def display(self):
    sys.stderr.write("csbackchk (ERROR): " + self.msg + "\n")
60
    sys.stderr.write("triggered in line: " + self.line + "\n")
61
62
63
64
65
66
67
68
69
70
71


class Usage(Error):

  def display(self):
    usage_text = "Version: "+__version__+"\nLicense: "+__license__+ \
      "\n"+__subversion__+"\nAuthor: "+__author__+ """
 Usage: csbackchk [-v|--verbose] [-e REGEX [-e REGEX [...]]]
                  [-R|--notrecursive] [-d|--debug] [-f|--followlinks] 
                  [-t|--tolerant] [SOURCEPATH] PATH
    or: csbackchk -h|--help\n"""
72
    sys.stderr.write("csbackchk [line "+self.line+"]: "+self.msg+"\n")
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
    sys.stderr.write(usage_text)

# -----------------------------------------------------------------------------
def help():
  """
  Printing helptext to stdout.
  """
  help_text = "Version: "+__version__+"\nLicense: "+__license__+"\n"+ \
    __subversion__+"\nAuthor: "+__author__+"""
 Usage: csbackchk [-v|--verbose] [-e REGEX [-e REGEX [...]]]
                  [-R|--notrecursive] [-d|--debug] [-f|--followlinks]
                  [-t|--tolerant] [SOURCEPATH] PATH
    or: csbackchk -h|--help
-------------------------------------------------------------------------------
 -v|--verbose       Be verbose.
 -h|--help          Display this help.
Daniel Armbruster's avatar
Daniel Armbruster committed
89
90
 -e REGEX           While checking a checksumfile exclude files if their pathes
                    are matching REGEX(s).
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
 -R|--notrecursive  Do not search in subdirectories of PATH.
 -d|--debug         Debug mode. Be really verbose.
 -f|--followlinks   Follow symbolic links. Only available if option -R is not
                    set. Note that this option can lead to infinite recursion.
 -t|--tolerant      Be tolerant.
                    While checking don't report anything if a file listed in
                    the checksumfile is missing. This flag is useful if a test
                    of a directory is executed but this directory is realized
                    e.g. as a ring buffer.
 SOURCEPATH         Optional sourcepath for comparison with files backed up in
                    PATH. PATH and its subdirectories (if option '-R' is not 
                    set) must contain the csback checksumfile(s).
                    Note that the directory structure (if option '-R' is not
                    set) bellow SOURCEPATH must be equal to those in PATH.
                    If SOURCEPATH is not passed a check of files located in
                    PATH with its checksumfiles will be performed.
 PATH               Path to perform check for.
"""
  sys.stdout.write(help_text)
110
111

# -----------------------------------------------------------------------------
112
113
114
def main(argv=None):
  # configure logger
  logInfo = {'hostname': os.uname()[1], \
Daniel Armbruster's avatar
Daniel Armbruster committed
115
    'user': pwd.getpwuid(os.getuid()).pw_name, \
116
    'pid': os.getpid()}
Daniel Armbruster's avatar
Daniel Armbruster committed
117
  csfile.csfileLogInfo = logInfo
118
119
  csfile.csfileLoggerName = 'csbackchk.csfile'
  log = logging.getLogger('csbackchk') 
Daniel Armbruster's avatar
Daniel Armbruster committed
120
  logger = logging.LoggerAdapter(log, logInfo)
121
  logging.basicConfig(level=logging.DEBUG, \
Daniel Armbruster's avatar
Daniel Armbruster committed
122
123
    format='%(asctime)-15s %(hostname)-6s %(name)-8s[%(pid)s]: \
(%(user)-4s) %(levelname)-8s %(message)s')
124
125
  console = logging.StreamHandler()
  formatter = logging.Formatter( \
Daniel Armbruster's avatar
Daniel Armbruster committed
126
    '%(name)-8s [%(lineno)d]: %(levelname)-8s %(message)s')
127
128
  console.setFormatter(formatter)

129
  # fetch arguments
130
131
132
133
  if argv is None:
    argv = sys.argv
  try:
    try:
Daniel Armbruster's avatar
Daniel Armbruster committed
134
135
      opts, args = getopt.getopt(argv[1:], "vhe:Rdft", ["help", "verbose", \
        "notrecursive", "debug", "followlinks", "tolerant"])
136
    except getopt.GetoptError as err:
137
      raise Usage(137,err.msg)
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
    verbose = False
    debugMode = False
    notRecursive = False
    followLinks = False
    beTolerant = False
    regexes = []
    # collect arguments
    for opt, arg in opts:
      if opt in ("-v", "--verbose"):
        verbose = True
        console.setLevel(logging.INFO)
      elif opt in ("-h", "--help"):
        sys.exit(help())
        return 0
      elif opt in ("-R", "--notrecursive"):
        notRecursive = True
      elif opt in ("-e"):
        regexes.append(arg)
      elif opt in ("-d", "--debug"):
        debugMode = True
        console.setLevel(logging.DEBUG)
      elif opt in ("-f", "--followlinks"):
        followLinks = True
      elif opt in ("-t", "--tolerant"):
        beTolerant = True
      else:
164
        raise Usage(164,msg="Unhandled option chosen.")
165
166

    if verbose or debugMode:
167
      log.addHandler(console)
168
169
170
171
172
173
174
175

    if 1 == len(args):
      sourcepath = str(args[0]).rstrip(os.sep)+os.sep
      inputpath = sourcepath 
    elif 2 == len(args):
      sourcepath = str(args[0]).rstrip(os.sep)+os.sep 
      inputpath = str(args[1]).rstrip(os.sep)+os.sep 
    else:
176
177
178
179
180
181
182
183
184
      raise Usage(176,"Invalid argument(s).")

    # major part
    if not csfile.hasCsFile(inputpath):
      raise Error(180,"PATH does not contain a checksumfile.")
    
    if notRecursive:
      logger.debug("Fetching subdirectories for regexes in %s", inputpath)
      subdirs = csfile.getSubDirectories(inputpath, regexes, followLinks) 
Daniel Armbruster's avatar
Daniel Armbruster committed
185
      subdirs = [subdir+"*" for subdir in subdirs]
186
187
188
189
190
191
192
      regexes.extend(subdirs)

    checksumfile = csfile.CsFile(inputpath, sourcepath)
    checksumfile.read()
    checksumfile.check(regexes, beTolerant)
    checksumfile.write()

193
194
195
  except Usage as err:
    err.display()
    return 2
196
197
198
199
  except Error as err:
    logger.error("csbackchk.Error occured while checking files.")
    err.display()
    return 2
200
  except csfile.CsFileError as err:
201
    logger.error("csfile.CsFileError occured while checking files.")
202
203
204
205
206
207
208
209
210
211
212
    err.display()
    return 2
  else:
    logger.info("Checks performed.")
    return 0
    
# -----------------------------------------------------------------------------
if __name__ == "__main__":
  sys.exit(main())

# ----- END OF csbackchk.py -----