Let's you create a password db and let users login, etc. This is not a real password system, its just something I came up with. Ie. Don't try using this on /etc/passwd
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 | # These are multiple .py files that can be used
# to access the password file.
# adduser.py adds a login/password to the database
# login.py attempts to login using a supplied l/p
# passwd.py allows the user to change his password
# userdel.py allows user to delete him/her self
#
# #----cut here----# is where the file ends
# adduser.py
#
# Copyright (c) 2001 Nelson Rush. All rights reserved.
#
# add user to the password database
#
from os import *
from struct import *
from binascii import *
from getpass import *
from strop import *
import md5
import sys
if access("passwords",O_RDWR):
fd = open("passwords",O_BINARY|O_RDWR)
newfile = 0
else:
fd = open("passwords",O_BINARY|O_RDWR|O_CREAT)
newfile = 1
md5sum = md5.new()
fmt = "40s 256s 30s 32s h"
print "Please enter the following information to add a user:\n\n"
user_name = raw_input("name: ")
user_home = raw_input("home: ")
user_login = raw_input("login: ")
user_password = getpass("password: ")
md5sum.update(user_password)
user_passhash = hexlify(md5sum.digest())
user_attempts = 0
user_sizeof = calcsize(fmt)
user_info = pack(fmt,user_name,user_home,user_login,user_passhash,user_attempts)
user_data = user_info
if newfile:
print "Adding user. . ."
write(fd,user_info)
close(fd)
sys.exit(1)
while len(user_data) == user_sizeof:
user_data = read(fd,user_sizeof)
if len(user_data) == user_sizeof:
(u_name,u_home,u_login,u_passhash,u_attempts) = unpack(fmt,user_data)
if find(u_login,user_login) == 0:
print "User already exists in database."
close(fd)
sys.exit(-1)
print "Adding user. . ."
write(fd,user_info)
close(fd)
#----cut here----#
# login.py
#
# Copyright (c) 2001 Nelson Rush. All rights reserved.
#
# login system which takes l/p and verifies access
#
from os import *
from struct import *
from binascii import *
from strop import *
from getpass import *
import md5
import sys
if access("passwords",O_RDONLY):
fd = open("passwords",O_BINARY|O_RDONLY)
else:
print "No password database exists."
sys.exit(-1)
md5sum = md5.new()
fmt = "40s 256s 30s 32s h"
user_name = "Nothing"
user_home = "Nothing"
user_login = raw_input("login: ")
user_password = getpass("password: ")
md5sum.update(user_password)
user_passhash = hexlify(md5sum.digest())
user_attempts = 0
user_sizeof = calcsize(fmt)
user_data = pack(fmt,user_name,user_home,user_login,user_passhash,user_attempts)
while len(user_data) == user_sizeof:
user_data = read(fd,user_sizeof)
if len(user_data) == user_sizeof:
(u_name,u_home,u_login,u_passhash,u_attempts) = unpack(fmt,user_data)
if find(u_login,user_login) == 0 and u_passhash == user_passhash:
print "Access Granted!"
close(fd)
sys.exit(1)
print "Invalid login or password."
close(fd)
sys.exit(-1)
#----cut here----#
# passwd.py
#
# Copyright (c) 2001 Nelson Rush. All rights reserved.
#
# changes a password
#
SEEK_BEG = 0
SEEK_CUR = 1
SEEK_END = 2
from os import *
from struct import *
from binascii import *
from strop import *
from getpass import *
import md5
import sys
if access("passwords",O_RDWR):
fd = open("passwords",O_BINARY|O_RDWR)
else:
print "No password database exists."
sys.exit(-1)
md5sum = md5.new()
fmt = "40s 256s 30s 32s h"
user_name = "Nothing"
user_home = "Nothing"
user_login = raw_input("login: ")
user_password = getpass("OLD password: ")
md5sum.update(user_password)
user_passhash = hexlify(md5sum.digest())
user_attempts = 0
user_sizeof = calcsize(fmt)
user_data = pack(fmt,user_name,user_home,user_login,user_passhash,user_attempts)
while len(user_data) == user_sizeof:
user_data = read(fd,user_sizeof)
if len(user_data) == user_sizeof:
(u_name,u_home,u_login,u_passhash,u_attempts) = unpack(fmt,user_data)
if find(u_login,user_login) == 0 and u_passhash == user_passhash:
new_password = getpass("NEW password: ")
newmd5sum = md5.new(new_password)
new_passhash = hexlify(newmd5sum.digest())
user_info = pack(fmt,u_name,u_home,u_login,new_passhash,u_attempts)
lseek(fd,-user_sizeof,SEEK_CUR)
write(fd,user_info)
close(fd)
print "Password changed."
sys.exit(1)
print "Invalid login or password."
close(fd)
sys.exit(-1)
#----cut here----#
# userdel.py
#
# Copyright (c) 2001 Nelson Rush. All rights reserved.
#
# deletes a user in the password database
#
SEEK_BEG = 0
SEEK_CUR = 1
SEEK_END = 2
import os
from struct import *
from binascii import *
from strop import *
from getpass import *
import md5
import sys
if os.access("passwords",os.O_RDWR):
fd = os.open("passwords",os.O_BINARY|os.O_RDWR)
else:
print "No password database exists."
sys.exit(-1)
md5sum = md5.new()
fmt = "40s 256s 30s 32s h"
(fmode, fino, fdev, fnlink, fuid, fgid, fsize, fatime, fmtime, fctime) = os.fstat(fd)
user_name = "Nothing"
user_home = "Nothing"
user_login = raw_input("login: ")
user_password = getpass("password: ")
md5sum.update(user_password)
user_passhash = hexlify(md5sum.digest())
user_attempts = 0
user_sizeof = calcsize(fmt)
user_data = pack(fmt,user_name,user_home,user_login,user_passhash,user_attempts)
while len(user_data) == user_sizeof:
user_data = os.read(fd,user_sizeof)
if len(user_data) == user_sizeof:
(u_name,u_home,u_login,u_passhash,u_attempts) = unpack(fmt,user_data)
if find(u_login,user_login) == 0 and u_passhash == user_passhash:
curpos = os.lseek(fd,0,SEEK_CUR)
if curpos == fsize:
os.close(fd)
f = open("passwords","ab+")
f.truncate(fsize - user_sizeof)
f.close()
print "User deleted."
sys.exit(1)
buf = os.read(fd,fsize - curpos)
os.lseek(fd,curpos - user_sizeof,SEEK_BEG)
os.write(fd,buf)
os.close(fd)
f = open("passwords","ab+")
f.truncate(fsize - user_sizeof)
f.close()
print "User deleted."
sys.exit(1)
print "Invalid login or password."
os.close(fd)
sys.exit(-1)
|
Just interesting, thought I'd post it.
Copyright. Oh yah, and btw... all of this code is Public Domain if you guys are wondering. I forgot to mention that.