/usr/bin/grokevt-findlogs is in grokevt 0.4.1-7.
This file is owned by root:root, with mode 0o755.
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 | #!/usr/bin/python
# This script attempts to find log file fragments in raw binary
# files, such as memory dumps and disk images.
#
# Copyright (C) 2006-2007 Timothy D. Morgan
#
# This program 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 version 2 of the
# License.
#
# This program 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.
#
# vi:set tabsize=4:
# $Id: grokevt-findlogs 97 2007-01-29 01:53:42Z tim $
import sys
import os
import types
import time
import struct
import grokevt
class fileSearcher:
f = None
largest = 0
bs = 512*1024
strings = None
sz = -1
def __init__(self, file_name, strings):
self.f = file(BIN_FILE, 'r')
self.largest = max(map(len,strings))
self.bs = max(self.largest,self.bs)
self.strings = strings
def findOne(self, start=0):
self.f.seek(start)
offset = start
buf = self.f.read(self.bs)
while buf != '':
hits = []
for s in self.strings:
h = buf.find(s)
if h != -1:
hits.append(h)
if len(hits) > 0:
return offset+min(hits)
buf = buf[(self.bs - self.largest):] + self.f.read(self.bs)
offset += (self.bs - self.largest)
return -1
def read(self, offset, count):
self.f.seek(offset)
return self.f.read(count)
def size(self):
if self.sz > 0:
return self.sz
o = self.f.tell()
self.f.seek(0, 2)
self.sz = self.f.tell()
self.f.seek(o)
return self.sz
def close(self):
self.f.close()
def usage():
sys.stderr.write("USAGE:\n")
sys.stderr.write(" %s -?\n" % os.path.basename(sys.argv[0]))
sys.stderr.write(" %s [-v] [-h] [-H] [-o <OFFSET>] <RAW_FILE>\n\n"
% os.path.basename(sys.argv[0]))
sys.stderr.write("grokevt-findlogs attempts to find log file fragments in raw\n")
sys.stderr.write("binary files, such as memory dumps and disk images.\n")
sys.stderr.write("Please see the man page for more information.\n")
# Globals influenced by command line options
print_header = 1
# XXX: not currently used
print_verbose = 0
start_offset = 0
# Parse command line
argv_len = len(sys.argv)
if (argv_len < 2) or (sys.argv[1] == '-?') or (sys.argv[1] == '--help'):
usage()
sys.exit(os.EX_USAGE)
else:
BIN_FILE=sys.argv[argv_len-1]
skip_one = 0
for i in range(1,len(sys.argv)-1):
if skip_one:
skip_one = 0
else:
if sys.argv[i] == '-H':
print_header = 0
elif sys.argv[i] == '-h':
print_header = 1
elif sys.argv[i] == '-v':
print_verbose = 1
elif sys.argv[i] == '-o':
if i+1 < len(sys.argv):
# XXX: might be nice to allow hexadecimal in addition to decimal
start_offset = int(sys.argv[i+1])
skip_one = 1
else:
usage()
sys.stderr.write("ERROR: -o option requires parameter.\n")
sys.exit(os.EX_USAGE)
else:
usage()
sys.stderr.write("ERROR: Unrecognized option '%s'.\n" % option)
sys.exit(os.EX_USAGE)
if not os.access(BIN_FILE, os.R_OK):
sys.stderr.write("ERROR: DB file could not be read.")
sys.exit(os.EX_OSFILE)
searcher = fileSearcher(BIN_FILE,
(grokevt.header_log_magic, grokevt.cursor_magic))
if print_header:
print "OFFSET,LENGTH,TYPE,MESSAGE_NUM,CREATED,CONTIGUOUS"
contig_next = -1
i = searcher.findOne(start_offset)
while i != -1:
found_one = False
if (i + grokevt.min_record_size < searcher.size()):
offset = i-4
size1 = struct.unpack("<I", searcher.read(offset,4))[0]
end = offset+size1
if (size1 >= grokevt.min_record_size) and (end < searcher.size()):
size2 = struct.unpack("<I", searcher.read(end-4,4))[0]
if size1 == size2:
record = searcher.read(offset,size1)
guess = grokevt.guessRecordType(record)
contig = ''
if contig_next == offset:
contig = '*'
if guess == 'log':
(mnum,dc) = struct.unpack("<II", record[8:16])
print "%d,%d,%s,%s,%s,%s"\
% (offset,size1,guess,"%d" % mnum,
time.strftime("%Y-%m-%d %H:%M:%S",
time.gmtime(dc)),
contig)
found_one = True
elif guess != 'unknown':
print "%d,%d,%s,,,%s" % (offset,size1,guess,contig)
found_one = True
if found_one:
contig_next = end
i = searcher.findOne(end)
else:
i = searcher.findOne(i+1)
searcher.close()
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