#!/usr/bin/env python
# mkapachepw.py
# Generate Apache-Compatible Password And Group Files
# From Unix System Passwords And Groups.
#
# Copyright (c) 2005 TundraWare Inc.  All Rights Reserved.
# For Updates See:  http://www.tundraware.com/Software/mkapachepw

# Program Information

PROGNAME = "mkapachepw"
RCSID = "$Id: mkapachepw.py,v 1.104 2005/04/01 22:30:33 root Exp $"
VERSION = RCSID.split()[2]

# Copyright Information

CPRT         = "(c)"
DATE         = "2005"
OWNER        = "TundraWare Inc."
RIGHTS       = "All Rights Reserved"
COPYRIGHT    = "Copyright %s %s %s  %s. " % (CPRT, DATE, OWNER, RIGHTS)


#----------------------------------------------------------#
#            Variables User Might Change                   #
#----------------------------------------------------------#

GRFILE   = "./groups"    # Group output file  
PWFILE   = "./passwords" # Password output file
STARTUID = 100           # User IDs below this ignored
STARTGID = 100           # Group IDS below this ignored



#------------------- Nothing Below Here Should Need Changing ------------------#


#----------------------------------------------------------#
#                       Imports                            #
#----------------------------------------------------------#

import getopt
import grp
import os
import pwd
from socket import getfqdn
import sys
import tconfpy
import time


#----------------------------------------------------------#
#                 Aliases & Redefinitions                  #
#----------------------------------------------------------#



#----------------------------------------------------------#
#                Constants & Literals                      #
#----------------------------------------------------------#



#####
# Constants
#####



#####
# Literals
#####



#----------------------------------------------------------#
#              Prompts, & Application Strings              #
#----------------------------------------------------------#


#####
# Error Messages
#####

eERROR   =  "ERROR"


#####
# Informational Messages
#####


#####
# Usage Prompts
#####

uTable = [PROGNAME + " " + VERSION + " - %s\n" % COPYRIGHT,
          "usage:  " + PROGNAME + " [-fghpv] where,\n",
          "          -f file  configuration file to use (default: none)",
          "          -g #     smallest GID to include in output (default: 100)",
          "          -h       print this help information",
          "          -p #     smallest UID to include in output (default: 100)",
          "          -v       print detailed version information",
          ]


#----------------------------------------------------------#
#          Global Variables & Data Structures              #
#----------------------------------------------------------#

CFGFILE = ""          # Default is no config file


#--------------------------- Code Begins Here ---------------------------------#


#----------------------------------------------------------#
#             Object Base Class Definitions                #
#----------------------------------------------------------#

    

#----------------------------------------------------------#
#             Supporting Function Definitions              #
#----------------------------------------------------------#


#####
# Print An Error Message
#####

def ErrorMsg(emsg):
    print PROGNAME + " " + VERSION + " " + eERROR + ": " + emsg

# End of 'ErrorMsg()'


#####
# Print Usage Information
#####

def Usage():
    for line in uTable:
        print line

# End of 'Usage()'


#----------------------------------------------------------#
#                    Program Entry Point                   #
#----------------------------------------------------------#

#####
# Command line processing - Process any options set in the
# environment first, and then those given on the command line
#####

OPTIONS = sys.argv[1:]
envopt = os.getenv(PROGNAME.upper())
if envopt:
    OPTIONS = envopt.split() + OPTIONS

try:
    opts, args = getopt.getopt(OPTIONS, '-f:g:hp:v')
except getopt.GetoptError:
    Usage()
    sys.exit(1)

for opt, val in opts:
    if opt == "-f":
        CFGFILE=val
    if opt == "-g":
        STARTGID=int(val)
    if opt == "-h":
        Usage()
        sys.exit(0)
    if opt == "-p":
        STARTUID=int(val)
    if opt == "-v":
        print RCSID
        sys.exit(0)


# Process the configuration file, if any

if CFGFILE:

    retval = tconfpy.ParseConfig(CFGFILE, CallingProgram="%s %s " % (PROGNAME, VERSION))

    # Print any errors or warning generated by the parse

    for x in (retval.ErrMsgs, retval.WarnMsgs):
        for y in x:
            print y

    # If there were any errors, we're done
    if retval.ErrMsgs:
        sys.exit(0)


#####
# Build List Of Groups
#####

groups   = {}
for group in grp.getgrall():

    gname, gpw, gid, gmembers = group[:4]
    groups[gid] = (gname, [])

    for member in gmembers:
        groups[gid][1].append(member)

#####
# Build A List Of Users
#####

users    = {}
for user in pwd.getpwall():

    uname, pw, uid, gid = user[:4]
    users[uid] = (uname, pw)

    if uname not in groups[gid][1]:
        groups[gid][1].append(uname)


#####
# Write Out The Files
#####

# Files Should Be Read-Only

os.umask(0377)
TIMESTAMP = "# Created By %s %s On %s At %s\n" % (PROGNAME, VERSION, getfqdn(), time.asctime())

# Group File

grfile = open(GRFILE, "w")
grfile.write(TIMESTAMP)

for gid in groups:
    if gid >= STARTGID:
        grfile.write("%s: %s\n" % (groups[gid][0], " ".join(groups[gid][1])))

grfile.close()

# Password File

pwfile = open(PWFILE, "w")
pwfile.write(TIMESTAMP)

for uid in users:
    if uid >= STARTUID:
        pwfile.write("%s:%s\n" % users[uid][:])

pwfile.close()