version 1.7, 2000/10/29 22:07:20
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version 1.13, 2002/10/07 01:41:31
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Line 15 use strict;
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Line 15 use strict;
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# /etc/passwd, /etc/groups, and /etc/smbpasswd. |
# /etc/passwd, /etc/groups, and /etc/smbpasswd. |
# It also disables user directory access by making the directory |
# It also disables user directory access by making the directory |
# to be owned by user=www (as opposed to the former "username"). |
# to be owned by user=www (as opposed to the former "username"). |
# It also removes group membership from www (via the groupdel command). |
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# This command only returns an error if it is |
# This command only returns an error if it is |
# invoked incorrectly (by passing bad command-line arguments, etc). |
# invoked incorrectly (by passing bad command-line arguments, etc). |
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Line 26 use strict;
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Line 25 use strict;
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# Standard input usage |
# Standard input usage |
# First line is USERNAME |
# First line is USERNAME |
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# Valid user names must consist of ascii |
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# characters that are alphabetical characters |
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# (A-Z,a-z), numeric (0-9), or the underscore |
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# mark (_). (Essentially, the perl regex \w). |
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# Command-line arguments [USERNAME] |
# Command-line arguments [USERNAME] |
# Yes, but be very careful here (don't pass shell commands) |
# Yes, but be very careful here (don't pass shell commands) |
# and this is only supported to allow perl-system calls. |
# and this is only supported to allow perl-system calls. |
Line 36 use strict;
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Line 40 use strict;
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# print "uh-oh" if $exitcode; |
# print "uh-oh" if $exitcode; |
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# These are the exit codes. |
# These are the exit codes. |
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# ( (0,"ok"), |
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# (1,"User ID mismatch. This program must be run as user 'www'"), |
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# (2,"Error. This program needs just 1 command-line argument (username).") ) |
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# (3,"Error. Only one line should be entered into standard input."), |
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# (4,"Error. Too many other simultaneous password change requests being made."), |
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# (5,"Error. The user name specified has invalid characters.") ) |
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# Security |
# Security |
$ENV{'PATH'}=""; # Nullify path information. |
$ENV{'PATH'}=""; # Nullify path information. |
Line 76 if (@ARGV==1) {
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Line 86 if (@ARGV==1) {
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} |
} |
elsif (@ARGV) { |
elsif (@ARGV) { |
print("Error. This program needs just 1 command-line argument (username).\n") unless $noprint; |
print("Error. This program needs just 1 command-line argument (username).\n") unless $noprint; |
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unlink('/tmp/lock_lcpasswd'); |
exit 2; |
exit 2; |
} |
} |
else { |
else { |
@input=<>; |
@input=<>; |
if (@input!=1) { |
if (@input!=1) { |
print("Error. Only one line should be entered into standard input.\n") unless $noprint; |
print("Error. Only one line should be entered into standard input.\n") unless $noprint; |
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unlink('/tmp/lock_lcpasswd'); |
exit 3; |
exit 3; |
} |
} |
map {chop} @input; |
map {chop} @input; |
Line 90 else {
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Line 102 else {
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my ($username)=@input; |
my ($username)=@input; |
$username=~/^(\w+)$/; |
$username=~/^(\w+)$/; |
my $safeusername=$1; |
my $safeusername=$1; |
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if ($username ne $safeusername) { |
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print "Error. The user name specified has invalid characters.\n"; |
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unlink('/tmp/lock_lcpasswd'); |
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exit 5; |
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} |
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&enable_root_capability; |
&enable_root_capability; |
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# By using the system userdel command: |
# By using the system userdel command: |
# Remove entry from /etc/passwd if it exists |
# Remove entry from /etc/passwd if it exists |
# Remove entry from /etc/groups if it exists |
# Remove entry from /etc/groups if it exists |
system('/usr/sbin/groupdel 2>/dev/null',$safeusername); # ignore error message |
# I surround with groupdel command to make absolutely sure the group definition disappears. |
system('/usr/sbin/userdel 2>/dev/null',$safeusername); # ignore error message |
system('/usr/sbin/groupdel',$safeusername); # ignore error message |
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system('/usr/sbin/userdel',$safeusername); # ignore error message |
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system('/usr/sbin/groupdel',$safeusername); # ignore error message |
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# Remove entry from /etc/smbpasswd if it exists |
# Remove entry from /etc/smbpasswd if it exists |
my $oldsmbpasswd=`/bin/cat /etc/smbpasswd`; |
# the safest way to do this is with smbpasswd -x |
my $newsmbpasswd=`/bin/grep -v '^${safeusername}:' /etc/smbpasswd`; |
# as that's independent of location of the smbpasswd file. |
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# |
if ($oldsmbpasswd ne $newsmbpasswd) { |
if (-e '/usr/bin/smbpasswd') { |
open OUT,">/etc/smbpasswd"; |
($>,$<) = (0,0); # fool smbpasswd to think this is not setuid. |
print OUT $newsmbpasswd; |
system('/usr/bin/smbpasswd -x '.$safeusername); |
close OUT; |
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} |
} |
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# Change ownership on directory from username:username to www:www |
# Change ownership on directory from username:username to www:www |
# This prevents subsequently added users from having access. |
# This prevents subsequently added users from having access. |
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