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
|
import pwd
import string
verbose = 0
if __name__ == '__main__':
verbose = 1
entries = pwd.getpwall()
for e in entries:
name = e[0]
uid = e[2]
if verbose:
print name, uid
dbuid = pwd.getpwuid(uid)
if dbuid[0] <> name:
print 'Mismatch in pwd.getpwuid()'
dbname = pwd.getpwnam(name)
if dbname[2] <> uid:
print 'Mismatch in pwd.getpwnam()'
break
# try to get some errors
bynames = {}
byuids = {}
for n, p, u, g, gecos, d, s in entries:
bynames[n] = u
byuids[u] = n
allnames = bynames.keys()
namei = 0
fakename = allnames[namei]
while bynames.has_key(fakename):
chars = map(None, fakename)
for i in range(len(chars)):
if chars[i] == 'z':
chars[i] = 'A'
break
elif chars[i] == 'Z':
continue
else:
chars[i] = chr(ord(chars[i]) + 1)
break
else:
namei = namei + 1
try:
fakename = allnames[namei]
except IndexError:
# should never happen... if so, just forget it
break
fakename = string.join(map(None, chars), '')
try:
pwd.getpwnam(fakename)
except KeyError:
pass
else:
print 'fakename', fakename, 'did not except pwd.getpwnam()'
uids = byuids.keys()
uids.sort()
uids.reverse()
fakeuid = uids[0] + 1
try:
pwd.getpwuid(fakeuid)
except KeyError:
pass
else:
print 'fakeuid', fakeuid, 'did not except pwd.getpwuid()'
|
