#! @im_path_perl@
################################################################
###
### impwagent
###
### Author: Internet Message Group <img@mew.org>
### Created: Sep 13, 1997
### Revised: Apr 23, 2007
###
BEGIN {
@im_my_siteperl@
@im_src_siteperl@
};
$Prog = 'impwagent';
my $VERSION_DATE = "20161010";
my $VERSION_NUMBER = "153";
my $VERSION = "${Prog} version ${VERSION_DATE}(IM${VERSION_NUMBER})";
my $VERSION_INFORMATION = "${Prog} (IM ${VERSION_NUMBER}) ${VERSION_DATE}
Copyright (C) 1999 IM developing team
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
";
##
## Require packages
##
require 5.003;
use Socket;
use IM::Config;
use IM::GetPass;
use IM::Util;
##
## Main
##
@OptConfig = ();
init_opt(\@OptConfig);
read_cfg();
# server termination
if ($ARGV[0] =~ /stop|quit/i) {
$res = &connect_agent(1);
$res = &talk_agent("QUIT\n") if ($res ne '');
if ($res eq '') {
print "$Prog: server is not running\n";
} else {
print "$Prog: exit message: $res\n";
}
exit $EXIT_SUCCESS;
}
# clear password cache
if ($ARGV[0] =~ /clear/i) {
$res = &connect_agent(1);
$res = &talk_agent("CLEAR\n") if ($res ne '');
if ($res eq '') {
print "$Prog: server is not running\n";
} else {
print "$Prog: exit message: $res\n";
}
exit $EXIT_SUCCESS;
}
if ($ARGV[0] =~ /--version/i) {
print("${VERSION_INFORMATION}") && exit $EXIT_SUCCESS;
}
# display help
if ($ARGV[0] !~ /start/i && @ARGV > 0) {
print <<EOF;
$VERSION
hold passwords for IM
Usage:
$Prog [start] start $Prog
$Prog stop|quit terminate $Prog
$Prog clear clear passwords held by $Prog
$Prog help|--help Display this help and exit
$Prog --version Output version information and exit
This command holds passwords to reuse on later sessions for IM.
If you wish to use the feature supplied by $Prog, put "UsePwAgent=yes"
in your Config file, and start $Prog manually before using im* commands
which require passwords.
Report bugs to <tats\@vega.ocn.ne.jp>
EOF
exit $EXIT_SUCCESS;
}
# duplicate check
$res = &connect_agent(1);
$res = &talk_agent("PING\n") if ($res ne '');
if ($res eq 'PONG') {
print STDERR "$Prog: already running.\n";
exit $EXIT_ERROR;
}
# preparing socket directory
my $realuser = im_getlogin();
unless ($realuser) {
print STDERR "$Prog: cannot get login name.\n";
exit $EXIT_ERROR;
}
my $dir = &pwagent_tmp_path() . "-$realuser";
my $port = &pwagentport();
if ($port > 0) {
rmdir $dir;
unless (mkdir($dir, 0700)) {
print STDERR "$Prog: cannot create directory: $dir.\n";
exit $EXIT_ERROR;
}
unless (socket(SOCK, &AF_INET, &SOCK_STREAM, 0)) {
print STDERR "$Prog: socket: $!\n";
exit $EXIT_ERROR;
}
my $sin = sockaddr_in($port, inet_aton('127.0.0.1'));
unless (bind(SOCK, $sin)) {
print STDERR "$Prog: bind: $!\n";
exit $EXIT_ERROR;
}
} else {
$sockname = "$dir/pw";
# be sure the dir is not a link
unlink $sockname;
rmdir $dir;
unless (mkdir($dir, 0700)) {
print STDERR "$Prog: cannot create directory: $dir.\n";
exit $EXIT_ERROR;
}
unless (socket(SOCK, &AF_UNIX, &SOCK_STREAM, 0)) {
print STDERR "$Prog: socket: $!\n";
exit $EXIT_ERROR;
}
my $sun = sockaddr_un($sockname);
unless (bind(SOCK, $sun)) {
print STDERR "$Prog: bind: $!\n";
exit $EXIT_ERROR;
}
chmod(0600, $sockname);
}
listen(SOCK, 5);
select(SOCK); $| = 1; select(STDOUT);
$SIG{'ALRM'} = \&alarm_func;
#my $ppid = getppid();
my $id = fork();
if ($id < 0) {
print STDERR "$Prog: cannot fork: $!\n";
exit $EXIT_ERROR;
}
if ($id) {
print STDERR "$Prog: started (pid: $id)\n";
exit $EXIT_SUCCESS;
}
chdir($dir);
@_ = unpack('C2', pack('L', rand(time * $$)));
foreach (@_) {
$_ |= 0x20 if ($_ < 0x20);
}
my $key = pack('C2', @_);
for (;;) {
unless (accept(REQ, SOCK)) {
print STDERR "$Prog: accept: $!\n";
exit $EXIT_ERROR;
}
if ($port > 0) {
my $sa = getpeername(REQ);
my($fa, $po, $ad) = sockaddr_in($sa);
next if ($ad != inet_aton('127.0.0.1'));
}
select(REQ); $| = 1; select(STDOUT);
print REQ "$key\n";
alarm(3);
$_ = <REQ>;
alarm(0);
chomp;
if (/^PING$/) {
print REQ "PONG\n";
} elsif (/^CLEAR$/) {
undef %pwcache;
print REQ "CLEARED\n";
} elsif (/^SAVE\t(.*)/) {
my $param = $1;
alarm(3);
$_ = <REQ>;
alarm(0);
chomp;
if (/^PASS\t/) {
# decode from HEX string
$pwcache{$param} = pack('H*', substr($_, 5));
print REQ "OK\n";
} else {
print REQ "ERROR\n";
}
} elsif (/^LOAD\t(.*)/) {
# encode to HEX string
$_ = "PASS\t" . unpack('H*', $pwcache{$1}) . "\n";
print REQ $_;
} else {
# protocol error (including QUIT)
print REQ "BYE\n";
shutdown(REQ, 2);
close(REQ);
close(SOCK);
unlink($sockname) if ($sockname);
rmdir $dir;
exit $EXIT_ERROR;
}
substr($_, 0, length($_)) = '0123456789abcdef';
shutdown(REQ, 2);
close(REQ);
}
sub alarm_func {
# no operation
}
__END__
=head1 NAME
impwagent - hold passwords for IM
=head1 SYNOPSIS
B<impwagent> [OPTIONS]
=head1 DESCRIPTION
The I<impwagent> command holds passwords to reuse on later
sessions for IM.
If you wish to use the feature supplied by impwagent, put
UsePwAgent=yes
in your Config file, and start impwagent manually before using im* commands
which require passwords.
This command is provided by IM (Internet Message).
=head1 OPTIONS
=over 5
=item I<start>
Start impwagent. This is the default behavior.
=item I<stop>, I<quit>
Terminate impwagent.
=item I<clear>
Clear passwords held by impwagent.
=item I<help, --help>
Display help message and exit.
=item I<--version>
Output version information and exit.
=back
=head1 COPYRIGHT
IM (Internet Message) is copyrighted by IM developing team.
You can redistribute it and/or modify it under the modified BSD
license. See the copyright file for more details.
=cut
### Copyright (C) 1997, 1998, 1999 IM developing team
### All rights reserved.
###
### Redistribution and use in source and binary forms, with or without
### modification, are permitted provided that the following conditions
### are met:
###
### 1. Redistributions of source code must retain the above copyright
### notice, this list of conditions and the following disclaimer.
### 2. Redistributions in binary form must reproduce the above copyright
### notice, this list of conditions and the following disclaimer in the
### documentation and/or other materials provided with the distribution.
### 3. Neither the name of the team nor the names of its contributors
### may be used to endorse or promote products derived from this software
### without specific prior written permission.
###
### THIS SOFTWARE IS PROVIDED BY THE TEAM AND CONTRIBUTORS ``AS IS'' AND
### ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
### IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
### PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE TEAM OR CONTRIBUTORS BE
### LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
### CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
### SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
### BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
### WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
### OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
### IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
### Local Variables:
### mode: perl
### End: