| 1 | #! /usr/bin/perl | 
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| 2 |  | 
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| 3 | # Copyright Rainer Wichmann (2004) | 
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| 4 | # | 
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| 5 | # License Information: | 
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| 6 | # This program is free software; you can redistribute it and/or modify | 
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| 7 | # it under the terms of the GNU General Public License as published by | 
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| 8 | # the Free Software Foundation; either version 2 of the License, or | 
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| 9 | # (at your option) any later version. | 
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| 10 | # | 
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| 11 | # This program is distributed in the hope that it will be useful, | 
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| 12 | # but WITHOUT ANY WARRANTY; without even the implied warranty of | 
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| 13 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the | 
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| 14 | # GNU General Public License for more details. | 
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| 15 | # | 
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| 16 | # You should have received a copy of the GNU General Public License | 
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| 17 | # along with this program; if not, write to the Free Software | 
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| 18 | # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | 
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| 19 | # | 
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| 20 |  | 
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| 21 | use warnings; | 
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| 22 | use strict; | 
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| 23 | use Getopt::Long; | 
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| 24 | use File::Basename; | 
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| 25 | use File::Copy; | 
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| 26 | use File::stat; | 
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| 27 | use File::Temp qw/ tempfile tempdir unlink0 /; | 
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| 28 | use IO::Handle; | 
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| 29 | use Fcntl qw(:DEFAULT :flock); | 
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| 30 | use Tie::File; | 
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| 31 |  | 
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| 32 | # Do I/O to the data file in binary mode (so it | 
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| 33 | # wouldn't complain about invalid UTF-8 characters). | 
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| 34 | use bytes; | 
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| 35 |  | 
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| 36 | File::Temp->safe_level( File::Temp::HIGH ); | 
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| 37 |  | 
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| 38 | my %opts = (); | 
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| 39 | my $action; | 
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| 40 | my $file1; | 
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| 41 | my $file2; | 
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| 42 | my $passphrase; | 
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| 43 | my $return_from_sign = 0; | 
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| 44 | my $no_print_examine = 0; | 
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| 45 | my $no_remove_lock   = 0; | 
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| 46 | my $base = basename($0); | 
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| 47 |  | 
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| 48 | my $cfgfile  = "@myconffile@"; | 
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| 49 | my $datafile = "@mydatafile@"; | 
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| 50 | my $daemon   = "@sbindir@/@install_name@"; | 
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| 51 | my $gpg      = "@mygpg@"; | 
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| 52 |  | 
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| 53 | $cfgfile  =~ s/^REQ_FROM_SERVER//; | 
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| 54 | $datafile =~ s/^REQ_FROM_SERVER//; | 
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| 55 |  | 
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| 56 | $gpg = "gpg" if ($gpg eq ""); | 
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| 57 |  | 
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| 58 | sub check_gpg_agent() { | 
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| 59 | my  $gpgconf = "$ENV{'HOME'}/.gnupg/gpg.conf"; | 
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| 60 |  | 
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| 61 | if (!-f "$gpgconf") { | 
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| 62 | $gpgconf = "$ENV{'HOME'}/.gnupg/options"; | 
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| 63 | } | 
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| 64 |  | 
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| 65 | if (-f $gpgconf) { | 
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| 66 |  | 
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| 67 | my @array = (); | 
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| 68 | tie @array, 'Tie::File', $gpgconf or die "Cannot tie ${gpgconf}: $!"; | 
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| 69 | my @grep = grep(/^\s*use-agent/, @array); | 
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| 70 |  | 
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| 71 | # print "matches = $#grep\n"; | 
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| 72 |  | 
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| 73 | if ($#grep >= 0) | 
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| 74 | { | 
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| 75 | if (exists $ENV{'GPG_AGENT_INFO'}) | 
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| 76 | { | 
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| 77 | my $socke = $ENV{'GPG_AGENT_INFO'}; | 
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| 78 | $socke =~ s/:.*//; | 
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| 79 |  | 
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| 80 | # print "socke = $socke\n"; | 
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| 81 |  | 
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| 82 | if (! -S $socke) | 
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| 83 | { | 
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| 84 | print "--------------------------------------------------\n"; | 
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| 85 | print "\n"; | 
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| 86 | print " GPG is set to use gpg-agent, but GPG agent is"; | 
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| 87 | print " not running, though GPG_AGENT_INFO is defined.\n\n"; | 
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| 88 | print " Please restart gpg-agent, or remove the use-agent\n"; | 
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| 89 | print " option from ${gpgconf} and unset GPG_AGENT_INFO\n\n"; | 
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| 90 | print "--------------------------------------------------\n"; | 
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| 91 | print "\n"; | 
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| 92 | exit 1; | 
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| 93 | } | 
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| 94 | } | 
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| 95 | else | 
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| 96 | { | 
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| 97 | print "--------------------------------------------------\n"; | 
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| 98 | print "\n"; | 
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| 99 | print " GPG is set to use gpg-agent, but "; | 
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| 100 | print " GPG_AGENT_INFO is not defined.\n\n"; | 
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| 101 | print " Please start gpg-agent, or remove the use-agent\n"; | 
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| 102 | print " option from ${gpgconf}\n\n"; | 
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| 103 | print "--------------------------------------------------\n"; | 
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| 104 | print "\n"; | 
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| 105 | exit 1; | 
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| 106 | } | 
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| 107 | } | 
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| 108 | untie @array; | 
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| 109 | } | 
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| 110 | } | 
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| 111 |  | 
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| 112 |  | 
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| 113 | sub usage() { | 
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| 114 | print "Usage:\n"; | 
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| 115 | print "  $base { -m F | --create-cfgfile }    [options] [in.cfgfile]\n"; | 
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| 116 | print "    Sign the configuration file. If in.cfgfile is given, sign it\n"; | 
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| 117 | print "    and install it as configuration file.\n\n"; | 
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| 118 |  | 
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| 119 | print "  $base { -m f | --print-cfgfile }     [options] \n"; | 
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| 120 | print "    Print the configuration file to stdout. Signatures are removed.\n\n"; | 
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| 121 |  | 
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| 122 | print "  $base { -m D | --create-datafile }   [options] [in.datafile]\n"; | 
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| 123 | print "    Sign the database file. If in.datafile is given, sign it\n"; | 
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| 124 | print "    and install it as database file.\n\n"; | 
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| 125 |  | 
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| 126 | print "  $base { -m d | --print-datafile }    [options] \n"; | 
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| 127 | print "    Print the database file to stdout. Signatures are removed. Use\n"; | 
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| 128 | print "    option --list to list files in database rather than printing the raw file.\n\n"; | 
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| 129 |  | 
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| 130 | print "  $base { -m R | --remove-signature }  [options] file1 [file2 ...]\n"; | 
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| 131 | print "    Remove cleartext signature from input file(s). The file\n"; | 
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| 132 | print "    is replaced by the non-signed file.\n\n"; | 
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| 133 |  | 
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| 134 | print "  $base { -m E | --sign }              [options] file1 [file2 ...]\n"; | 
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| 135 | print "    Sign file(s) with a cleartext signature. The file\n"; | 
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| 136 | print "    is replaced by the signed file.\n\n"; | 
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| 137 |  | 
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| 138 | print "  $base { -m e | --examine }           [options] file1 [file2 ...]\n"; | 
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| 139 | print "    Report signature status of file(s).\n\n"; | 
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| 140 |  | 
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| 141 | print "  $base { -m G | --generate-keys }     [options] \n"; | 
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| 142 | print "    Generate a PGP keypair to use for signing.\n\n"; | 
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| 143 |  | 
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| 144 | print "Options:\n"; | 
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| 145 | print "  -c cfgfile    --cfgfile cfgfile\n"; | 
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| 146 | print "    Select an alternate configuration file.\n\n"; | 
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| 147 |  | 
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| 148 | print "  -d datafile   --datafile datafile\n"; | 
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| 149 | print "    Select an alternate database file.\n\n"; | 
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| 150 |  | 
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| 151 | print "  -p passphrase --passphrase passphrase\n"; | 
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| 152 | print "    Set the passphrase for gpg. By default, gpg will ask.\n\n"; | 
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| 153 |  | 
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| 154 | print "  -l            --list\n"; | 
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| 155 | print "    List the files in database rather than printing the raw file.\n\n"; | 
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| 156 |  | 
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| 157 | print "  -v            --verbose\n"; | 
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| 158 | print "    Verbose output.\n\n"; | 
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| 159 | return; | 
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| 160 | } | 
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| 161 |  | 
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| 162 | sub check_gpg_uid () { | 
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| 163 | if (0 != $>) { | 
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| 164 | print "--------------------------------------------------\n"; | 
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| 165 | print "\n"; | 
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| 166 | print " You are not root. Please remember that samhain/yule\n"; | 
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| 167 | print " will use the public keyring of root to verify a signature.\n"; | 
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| 168 | print "\n"; | 
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| 169 | print "--------------------------------------------------\n"; | 
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| 170 | } else { | 
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| 171 | if (!("@yulectl_prg@" =~ //)) { | 
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| 172 | print "--------------------------------------------------\n"; | 
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| 173 | print "\n"; | 
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| 174 | print " Please remember that yule will drop root after startup. Signature\n"; | 
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| 175 | print " verification on SIGHUP will fail if you do not import the public key\n"; | 
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| 176 | print " into the keyring of the non-root yule user.\n"; | 
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| 177 | print "\n"; | 
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| 178 | print "--------------------------------------------------\n"; | 
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| 179 | } | 
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| 180 | } | 
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| 181 | } | 
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| 182 |  | 
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| 183 | sub check_gpg_sign () { | 
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| 184 | if ( (!-d "$ENV{'HOME'}/.gnupg") || (!-e "$ENV{'HOME'}/.gnupg/secring.gpg")) { | 
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| 185 | print "--------------------------------------------------\n"; | 
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| 186 | print "\n"; | 
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| 187 | if (!-d "$ENV{'HOME'}/.gnupg") { | 
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| 188 | print " Directory \$HOME/.gnupg not found!\n"; | 
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| 189 | } else { | 
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| 190 | print " Secret keyring \$HOME/.gnupg/secring.gpg not found!\n"; | 
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| 191 | } | 
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| 192 | print "\n"; | 
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| 193 | print " This indicates that you have never created a \n"; | 
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| 194 | print " public/private keypair, and thus cannot sign.\n"; | 
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| 195 | print " \n"; | 
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| 196 | print " Please use $0 --generate-keys or gpg --gen-key\n"; | 
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| 197 | print " to generate a public/private keypair first.\n"; | 
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| 198 | print "\n"; | 
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| 199 | print "--------------------------------------------------\n"; | 
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| 200 | print "\n"; | 
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| 201 | exit; | 
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| 202 | } | 
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| 203 | } | 
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| 204 |  | 
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| 205 | sub check_gpg_verify () { | 
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| 206 | if ( (!-d "$ENV{'HOME'}/.gnupg") || (!-e "$ENV{'HOME'}/.gnupg/pubring.gpg")) { | 
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| 207 | print "--------------------------------------------------\n"; | 
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| 208 | print "\n"; | 
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| 209 | if (!-d "$ENV{'HOME'}/.gnupg") { | 
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| 210 | print " Directory \$HOME/.gnupg not found!\n"; | 
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| 211 | } else { | 
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| 212 | print " Public keyring \$HOME/.gnupg/pubring.gpg not found!\n"; | 
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| 213 | } | 
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| 214 | print "\n"; | 
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| 215 | print " This indicates that you have never used gpg before \n"; | 
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| 216 | print " and/or have no public keys to verify signatures.\n"; | 
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| 217 | print " \n"; | 
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| 218 | print " Please use 'gpg --export key_id' to export the public\n"; | 
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| 219 | print " signing key of the user who is signing the\n"; | 
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| 220 | print " configuration/database files.\n\n"; | 
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| 221 | print " Then you can use 'gpg --import keyfile' to import the key\n"; | 
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| 222 | print " into this user's public keyring.\n"; | 
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| 223 | print "\n"; | 
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| 224 | print "--------------------------------------------------\n"; | 
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| 225 | print "\n"; | 
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| 226 | exit; | 
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| 227 | } | 
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| 228 | } | 
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| 229 |  | 
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| 230 |  | 
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| 231 | sub generate () { | 
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| 232 | my $command = "$gpg --homedir $ENV{'HOME'}/.gnupg --gen-key"; | 
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| 233 | check_gpg_uid(); | 
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| 234 | system ($command) == 0 | 
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| 235 | or die "system $command failed: $?"; | 
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| 236 | exit; | 
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| 237 | } | 
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| 238 |  | 
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| 239 | sub examine () { | 
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| 240 | my $iscfg = 0; | 
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| 241 | my $have_fp  = 0; | 
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| 242 | my $have_sig = 0; | 
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| 243 | my $message = ''; | 
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| 244 | my $retval  = 9; | 
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| 245 | my $fh; | 
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| 246 | my $filename; | 
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| 247 |  | 
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| 248 | if (!($file1 =~ /^\-$/)) { | 
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| 249 | die ("Cannot open $file1 for read: $!") unless ((-e $file1) && (-r _)); | 
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| 250 | } | 
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| 251 | open FIN,  "<$file1" or die "Cannot open $file1 for read: $!"; | 
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| 252 |  | 
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| 253 | my $dir = tempdir( CLEANUP => 1 ); | 
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| 254 | $filename = $dir . "/exa_jhfdbilw." . $$; | 
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| 255 | open $fh, ">$filename" or die "Cannot open $filename"; | 
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| 256 | autoflush $fh 1; | 
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| 257 |  | 
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| 258 | while (<FIN>) { | 
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| 259 | print $fh $_; | 
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| 260 | if ($_ =~ /^\s*\[Misc\]/) { | 
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| 261 | $iscfg = 1; | 
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| 262 | } | 
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| 263 | } | 
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| 264 | if ($iscfg == 1) { | 
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| 265 | $message .=  "File $file1 is a configuration file\n\n"; | 
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| 266 | } else { | 
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| 267 | $message .=  "File $file1 is a database file\n\n"; | 
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| 268 | } | 
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| 269 |  | 
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| 270 |  | 
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| 271 | my $command = "$gpg --homedir $ENV{'HOME'}/.gnupg --status-fd 1 "; | 
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| 272 | $command .= "--verbose " if (defined($opts{'v'})); | 
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| 273 | $command .= "--verify $filename "; | 
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| 274 | if (defined($opts{'v'})) { | 
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| 275 | $command .= "2>&1"; | 
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| 276 | } else { | 
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| 277 | $command .= "2>/dev/null"; | 
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| 278 | } | 
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| 279 |  | 
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| 280 | print STDOUT "Using: $command\n\n" if (defined($opts{'v'})); | 
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| 281 | open  GPGIN, "$command |" or die "Cannot fork: $!"; | 
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| 282 |  | 
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| 283 | while (<GPGIN>) { | 
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| 284 | if ($_ =~ /^\[GNUPG:\] GOODSIG ([0-9A-F]+) (.*)$/) { | 
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| 285 | $message .= "GOOD signature with key: $1\n"; | 
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| 286 | $message .= "Key owner:               $2\n"; | 
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| 287 | $have_sig = 1; | 
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| 288 | $retval   = 0; | 
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| 289 | } | 
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| 290 | if ($_ =~ /^\[GNUPG:\] VALIDSIG ([0-9A-F]+) ([0-9\-]+)\s/) { | 
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| 291 | $message .= "Key fingerprint:         $1\n"; | 
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| 292 | $message .= "Signature generated on:  $2\n\n"; | 
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| 293 | $have_fp = 1; | 
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| 294 | $message .=  "This file is signed with a valid signature.\n" | 
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| 295 | if ($have_sig == 1); | 
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| 296 | $have_sig = 1; | 
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| 297 | $have_fp = 1; | 
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| 298 | } | 
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| 299 | if ($_ =~ /^\[GNUPG:\] NODATA 1/) { | 
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| 300 | $message .=  "NO signature found.\n\n"; | 
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| 301 | $message .=  "This file is not signed !!!\n"; | 
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| 302 | $have_sig = 1; | 
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| 303 | $have_fp = 1; | 
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| 304 | $retval  = 2; | 
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| 305 | } | 
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| 306 | if ($_ =~ /^\[GNUPG:\] BADSIG ([0-9A-F]+) (.*)$/) { | 
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| 307 | $message .=  "BAD signature with key: $1\n"; | 
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| 308 | $message .=  "Key owner:              $2\n\n"; | 
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| 309 | $message .=  "This file is signed with an invalid signature !!!\n"; | 
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| 310 | $have_sig = 1; | 
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| 311 | $have_fp = 1; | 
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| 312 | $retval = 1; | 
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| 313 | } | 
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| 314 | if ($_ =~ /^\[GNUPG:\] NO_PUBKEY ([0-9A-F]+)/) { | 
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| 315 | $message .=  "NOT CHECKED signature with key: $1\n\n"; | 
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| 316 | $message .=  "The signature of this file cannot be checked: no public key available !!!\n"; | 
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| 317 | $have_sig = 1; | 
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| 318 | $have_fp = 1; | 
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| 319 | $retval  = 1; | 
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| 320 | } | 
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| 321 | print STDOUT $_ if (defined($opts{'v'})); | 
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| 322 | } | 
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| 323 | close (GPGIN); | 
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| 324 | print STDOUT "\n" if (defined($opts{'v'})); | 
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| 325 | if ($have_sig == 0) { | 
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| 326 | $message .=  "NO valid signature found\n"; | 
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| 327 | } | 
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| 328 | elsif ($have_fp == 0) { | 
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| 329 | $message .=  "NO fingerprint found\n"; | 
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| 330 | } | 
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| 331 | close (FIN); | 
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| 332 | if ($no_print_examine == 0) { | 
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| 333 | print STDOUT $message; | 
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| 334 | } | 
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| 335 | unlink0( $fh, $filename ) or die "Cannot unlink $filename safely"; | 
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| 336 | return $retval; | 
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| 337 | } | 
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| 338 |  | 
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| 339 | sub remove () { | 
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| 340 | my $bodystart = 1; | 
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| 341 | my $sigstart  = 0; | 
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| 342 | my $sigend    = 0; | 
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| 343 | my $filename  = ""; | 
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| 344 | my $fh; | 
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| 345 | my $stats; | 
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| 346 |  | 
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| 347 | open FH, "<$file1" or die "Cannot open file $file1 for read: $!"; | 
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| 348 | if (!($file1 =~ /^\-$/)) { | 
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| 349 | flock(FH, LOCK_EX) unless ($no_remove_lock == 1); | 
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| 350 | my $dir = tempdir( CLEANUP => 1 ) or die "Tempdir failed"; | 
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| 351 | $filename = $dir . "/rem_iqegBCQb." . $$; | 
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| 352 | open $fh, ">$filename" or die "Cannot open $filename"; | 
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| 353 | $stats = stat($file1); | 
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| 354 | # ($fh, $filename) = tempfile(UNLINK => 1); | 
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| 355 | } else { | 
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| 356 | open $fh, ">$file1" or die "Cannot open file $file1 for write: $!"; | 
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| 357 | } | 
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| 358 | autoflush $fh 1; | 
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| 359 | while (<FH>) { | 
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| 360 | if ($_ =~ /^-----BEGIN PGP SIGNED MESSAGE-----/) { | 
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| 361 | $sigstart = 1; | 
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| 362 | $bodystart = 0; | 
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| 363 | next; | 
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| 364 | } elsif (($sigstart == 1) && ($_ =~ /^\s+$/)) { | 
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| 365 | $sigstart = 0; | 
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| 366 | $bodystart = 1; | 
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| 367 | next; | 
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| 368 | } elsif ($_ =~ /^-----BEGIN PGP SIGNATURE-----/) { | 
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| 369 | $bodystart = 0; | 
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| 370 | $sigend = 1; | 
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| 371 | next; | 
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| 372 | } elsif (($sigend == 1) && ($_ =~ /^-----END PGP SIGNATURE-----/)) { | 
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| 373 | $sigend = 0; | 
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| 374 | $bodystart = 1; | 
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| 375 | next; | 
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| 376 | } | 
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| 377 | if ($bodystart == 1) { | 
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| 378 | print $fh $_; | 
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| 379 | } | 
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| 380 | } | 
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| 381 | if (!($file1 =~ /^\-$/)) { | 
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| 382 | copy("$filename", "$file1") | 
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| 383 | or die "Copy $filename to $file1 failed: $!"; | 
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| 384 | chmod $stats->mode, $file1; | 
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| 385 | chown $stats->uid, $stats->gid, $file1; | 
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| 386 | flock(FH, LOCK_UN) unless ($no_remove_lock == 1); | 
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| 387 | close FH; | 
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| 388 | } | 
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| 389 | unlink0( $fh, $filename ) or die "Cannot unlink $filename safely"; | 
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| 390 | return; | 
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| 391 | } | 
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| 392 |  | 
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| 393 | sub print_cfgfile () { | 
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| 394 | my $bodystart = 0; | 
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| 395 | my $sigstart  = 0; | 
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| 396 |  | 
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| 397 | if (!defined($file2)) { | 
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| 398 | $file2 = '-'; | 
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| 399 | } | 
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| 400 |  | 
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| 401 | open FH, "<$file1" or die "Cannot open file $file1 for read: $!"; | 
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| 402 | open FO, ">$file2" or die "Cannot open file $file2 for write: $!"; | 
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| 403 | while (<FH>) { | 
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| 404 | if ($_ =~ /^-----BEGIN PGP SIGNED MESSAGE-----/) { | 
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| 405 | $sigstart = 1; | 
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| 406 | next; | 
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| 407 | } elsif (($sigstart == 1) && ($_ =~ /^\s+$/)) { | 
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| 408 | $sigstart = 0; | 
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| 409 | $bodystart = 1; | 
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| 410 | next; | 
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| 411 | } elsif ($_ =~ /^-----BEGIN PGP SIGNATURE-----/) { | 
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| 412 | $bodystart = 0; | 
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| 413 | exit; | 
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| 414 | } | 
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| 415 | if ($bodystart == 1) { | 
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| 416 | print FO $_; | 
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| 417 | } | 
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| 418 | } | 
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| 419 | exit; | 
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| 420 | } | 
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| 421 | sub print_datafile () { | 
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| 422 | die ("Cannot find program $daemon") | 
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| 423 | unless (-e $daemon); | 
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| 424 | if (defined($opts{'v'})) { | 
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| 425 | open FH, "$daemon --full-detail -d $datafile |" | 
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| 426 | or die "Cannot open datafile $datafile for read: $!"; | 
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| 427 | } else { | 
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| 428 | open FH, "$daemon -d $datafile |" | 
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| 429 | or die "Cannot open datafile $datafile for read: $!"; | 
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| 430 | } | 
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| 431 | while (<FH>) { | 
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| 432 | print $_; | 
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| 433 | } | 
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| 434 | exit; | 
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| 435 | } | 
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| 436 |  | 
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| 437 | sub sign_file () { | 
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| 438 |  | 
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| 439 | my $fileout = ''; | 
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| 440 | my $bodystart = 1; | 
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| 441 | my $sigstart  = 0; | 
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| 442 | my $sigend    = 0; | 
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| 443 | my $stats; | 
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| 444 | my $fh1; | 
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| 445 | my $filename1; | 
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| 446 | my $flag1     = 0; | 
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| 447 |  | 
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| 448 | check_gpg_uid(); | 
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| 449 | check_gpg_agent(); | 
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| 450 |  | 
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| 451 | if (!defined($file2)) { | 
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| 452 | $file2 = $file1; | 
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| 453 | } | 
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| 454 |  | 
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| 455 | if ($file1 =~ /^\-$/) { | 
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| 456 | my $dir = tempdir( CLEANUP => 1 ) or die "Tempdir failed"; | 
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| 457 | $filename1 = $dir . "/sig_vs8827sd." . $$; | 
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| 458 | open $fh1, ">$filename1" or die "Cannot open $filename1"; | 
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| 459 | $flag1 = 1; | 
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| 460 | # my ($fh1, $filename1) = tempfile(UNLINK => 1); | 
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| 461 |  | 
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| 462 | while (<STDIN>) { | 
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| 463 | if ($_ =~ /^-----BEGIN PGP SIGNED MESSAGE-----/) { | 
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| 464 | $sigstart = 1; | 
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| 465 | $bodystart = 0; | 
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| 466 | next; | 
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| 467 | } elsif (($sigstart == 1) && ($_ =~ /^\s+$/)) { | 
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| 468 | $sigstart = 0; | 
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| 469 | $bodystart = 1; | 
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| 470 | next; | 
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| 471 | } elsif ($_ =~ /^-----BEGIN PGP SIGNATURE-----/) { | 
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| 472 | $bodystart = 0; | 
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| 473 | $sigend = 1; | 
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| 474 | next; | 
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| 475 | } elsif (($sigend == 1) && ($_ =~ /^-----END PGP SIGNATURE-----/)) { | 
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| 476 | $sigend = 0; | 
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| 477 | $bodystart = 1; | 
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| 478 | next; | 
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| 479 | } | 
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| 480 | if ($bodystart == 1) { | 
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| 481 | print $fh1 $_; | 
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| 482 | } | 
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| 483 | # | 
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| 484 | # print $fh1 $_; | 
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| 485 | # | 
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| 486 | } | 
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| 487 | $file1 = $filename1; | 
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| 488 | $fileout = '-'; | 
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| 489 | } else { | 
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| 490 | open (LOCKFILE, "<$file1") or die "Cannot open $file1: $!"; | 
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| 491 | flock(LOCKFILE, LOCK_EX); | 
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| 492 | $no_print_examine = 1; | 
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| 493 | $no_remove_lock   = 1; | 
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| 494 | if (examine() < 2) { | 
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| 495 | remove(); | 
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| 496 | } | 
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| 497 | $fileout = $file1 . ".asc"; | 
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| 498 | $stats   = stat($file1) | 
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| 499 | or die "No file $file1: $!"; | 
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| 500 | } | 
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| 501 |  | 
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| 502 | if (defined($passphrase)) { | 
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| 503 | local $SIG{PIPE} = 'IGNORE'; | 
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| 504 | my $command = "$gpg --homedir $ENV{'HOME'}/.gnupg --passphrase-fd 0 -a --clearsign -o $fileout --not-dash-escaped $file1"; | 
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| 505 | open (FH, "|$command")  or die "can't fork: $!"; | 
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| 506 | print FH "$passphrase"  or die "can't write: $!"; | 
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| 507 | close FH                or die "can't close: status=$?"; | 
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| 508 | } else { | 
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| 509 | my $command = "$gpg --homedir $ENV{'HOME'}/.gnupg                   -a --clearsign -o $fileout --not-dash-escaped $file1"; | 
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| 510 | system("$command") == 0 | 
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| 511 | or die "system $command failed: $?"; | 
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| 512 | } | 
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| 513 |  | 
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| 514 | if (!($fileout =~ /^\-$/)) { | 
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| 515 | my $st_old = stat($file1) | 
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| 516 | or die "No file $file1: $!"; | 
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| 517 | my $st_new = stat($fileout) | 
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| 518 | or die "No file $fileout: $!"; | 
|---|
| 519 | die ("Signed file is smaller than unsigned file") | 
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| 520 | unless ($st_new->size > $st_old->size); | 
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| 521 | move("$fileout", "$file2") | 
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| 522 | or die "Move $fileout to $file2 failed: $!"; | 
|---|
| 523 | chmod $stats->mode, $file2; | 
|---|
| 524 | chown $stats->uid, $stats->gid, $file2; | 
|---|
| 525 | flock(LOCKFILE, LOCK_UN); | 
|---|
| 526 | } | 
|---|
| 527 |  | 
|---|
| 528 | if ($flag1 == 1) { | 
|---|
| 529 | unlink0( $fh1, $filename1 ) or die "Cannot unlink $filename1 safely"; | 
|---|
| 530 | } | 
|---|
| 531 | if ($return_from_sign == 1) { | 
|---|
| 532 | return; | 
|---|
| 533 | } | 
|---|
| 534 | exit; | 
|---|
| 535 | } | 
|---|
| 536 |  | 
|---|
| 537 | Getopt::Long::Configure ("posix_default"); | 
|---|
| 538 | Getopt::Long::Configure ("bundling"); | 
|---|
| 539 | # Getopt::Long::Configure ("debug"); | 
|---|
| 540 |  | 
|---|
| 541 | GetOptions (\%opts, 'm=s', 'h|help', 'v|verbose', 'l|list', | 
|---|
| 542 | 'c|cfgfile=s', | 
|---|
| 543 | 'd|datafile=s', | 
|---|
| 544 | 'p|passphrase=s', | 
|---|
| 545 | 'create-cfgfile',  # -m F | 
|---|
| 546 | 'print-cfgfile',   # -m f | 
|---|
| 547 | 'create-datafile', # -m D | 
|---|
| 548 | 'print-datafile',  # -m d | 
|---|
| 549 | 'remove-signature',# -m R | 
|---|
| 550 | 'sign',            # -m E | 
|---|
| 551 | 'examine',         # -m e | 
|---|
| 552 | 'generate-keys');  # -m G | 
|---|
| 553 |  | 
|---|
| 554 | if (defined ($opts{'h'})) { | 
|---|
| 555 | usage(); | 
|---|
| 556 | exit; | 
|---|
| 557 | } | 
|---|
| 558 |  | 
|---|
| 559 | if (defined($opts{'c'})) { | 
|---|
| 560 | $cfgfile = $opts{'c'}; | 
|---|
| 561 | } | 
|---|
| 562 | if (defined($opts{'d'})) { | 
|---|
| 563 | $datafile = $opts{'d'}; | 
|---|
| 564 | } | 
|---|
| 565 | if (defined($opts{'p'})) { | 
|---|
| 566 | $passphrase = $opts{'p'}; | 
|---|
| 567 | } | 
|---|
| 568 |  | 
|---|
| 569 | if (defined ($opts{'m'}) && ($opts{'m'} =~ /[FfDdREeG]{1}/) ) { | 
|---|
| 570 | $action = $opts{'m'}; | 
|---|
| 571 | } | 
|---|
| 572 | elsif (defined ($opts{'create-cfgfile'})) { | 
|---|
| 573 | $action = 'F'; | 
|---|
| 574 | } | 
|---|
| 575 | elsif (defined ($opts{'print-cfgfile'})) { | 
|---|
| 576 | $action = 'f'; | 
|---|
| 577 | } | 
|---|
| 578 | elsif (defined ($opts{'create-datafile'})) { | 
|---|
| 579 | $action = 'D'; | 
|---|
| 580 | } | 
|---|
| 581 | elsif (defined ($opts{'print-datafile'})) { | 
|---|
| 582 | $action = 'd'; | 
|---|
| 583 | } | 
|---|
| 584 | elsif (defined ($opts{'remove-signature'})) { | 
|---|
| 585 | $action = 'R'; | 
|---|
| 586 | } | 
|---|
| 587 | elsif (defined ($opts{'sign'})) { | 
|---|
| 588 | $action = 'E'; | 
|---|
| 589 | } | 
|---|
| 590 | elsif (defined ($opts{'examine'})) { | 
|---|
| 591 | $action = 'e'; | 
|---|
| 592 | } | 
|---|
| 593 | elsif (defined ($opts{'generate-keys'})) { | 
|---|
| 594 | $action = 'G'; | 
|---|
| 595 | } | 
|---|
| 596 | else { | 
|---|
| 597 | usage(); | 
|---|
| 598 | die ("No valid action specified !"); | 
|---|
| 599 | } | 
|---|
| 600 |  | 
|---|
| 601 | if (defined($ARGV[0])) { | 
|---|
| 602 | $file1 = $ARGV[0]; | 
|---|
| 603 | } | 
|---|
| 604 | if (defined($ARGV[1])) { | 
|---|
| 605 | $file2 = $ARGV[1]; | 
|---|
| 606 | } | 
|---|
| 607 |  | 
|---|
| 608 |  | 
|---|
| 609 | if (($action =~ /[REe]{1}/) && !defined($file1)) { | 
|---|
| 610 | usage(); | 
|---|
| 611 | die("Option -m $action requires a filename (or '-' for stdio)\n"); | 
|---|
| 612 | } | 
|---|
| 613 |  | 
|---|
| 614 | if ($action =~ /^F$/) { | 
|---|
| 615 | if (!defined($file1)) { | 
|---|
| 616 | $file1 = $cfgfile; | 
|---|
| 617 | } | 
|---|
| 618 | $file2 = $cfgfile; | 
|---|
| 619 | sign_file (); | 
|---|
| 620 | } | 
|---|
| 621 |  | 
|---|
| 622 | if ($action =~ /^D$/) { | 
|---|
| 623 | if (!defined($file1)) { | 
|---|
| 624 | $file1 = $datafile; | 
|---|
| 625 | } | 
|---|
| 626 | $file2 = $datafile; | 
|---|
| 627 | sign_file (); | 
|---|
| 628 | } | 
|---|
| 629 |  | 
|---|
| 630 | if ($action =~ /^R$/) { | 
|---|
| 631 | # $file1 defined | 
|---|
| 632 | my $i = 0; | 
|---|
| 633 | while (defined($ARGV[$i])) { | 
|---|
| 634 | $file1 = $ARGV[$i]; | 
|---|
| 635 | remove (); | 
|---|
| 636 | ++$i; | 
|---|
| 637 | } | 
|---|
| 638 | } | 
|---|
| 639 |  | 
|---|
| 640 | if ($action =~ /^E$/) { | 
|---|
| 641 | # $file1 defined | 
|---|
| 642 | # default: $file2 = $file1 | 
|---|
| 643 | check_gpg_sign(); | 
|---|
| 644 | my $i = 0; | 
|---|
| 645 | while (defined($ARGV[$i])) { | 
|---|
| 646 | $file1 = $ARGV[$i]; | 
|---|
| 647 | $file2 = $file1; | 
|---|
| 648 | $return_from_sign = 1; | 
|---|
| 649 | sign_file (); | 
|---|
| 650 | ++$i; | 
|---|
| 651 | } | 
|---|
| 652 | } | 
|---|
| 653 |  | 
|---|
| 654 | if ($action =~ /^e$/) { | 
|---|
| 655 | # $file1 defined | 
|---|
| 656 | # default: $file2 = stdout | 
|---|
| 657 | check_gpg_verify(); | 
|---|
| 658 | my $i = 0; | 
|---|
| 659 | while (defined($ARGV[$i])) { | 
|---|
| 660 | print "\n"; | 
|---|
| 661 | $file1 = $ARGV[$i]; | 
|---|
| 662 | examine (); | 
|---|
| 663 | ++$i; | 
|---|
| 664 | print "\n--------------------------------\n" if (defined($ARGV[$i])); | 
|---|
| 665 | } | 
|---|
| 666 | } | 
|---|
| 667 |  | 
|---|
| 668 | if ($action =~ /^f$/) { | 
|---|
| 669 | $file1 = $cfgfile; | 
|---|
| 670 | $file2 = "-"; | 
|---|
| 671 | print_cfgfile (); | 
|---|
| 672 | } | 
|---|
| 673 |  | 
|---|
| 674 | if ($action =~ /^d$/) { | 
|---|
| 675 | # $file1 irrelevant | 
|---|
| 676 | if (defined($opts{'l'})) { | 
|---|
| 677 | print_datafile (); | 
|---|
| 678 | } else { | 
|---|
| 679 | $file1 = $datafile; | 
|---|
| 680 | $file2 = "-"; | 
|---|
| 681 | print_cfgfile (); | 
|---|
| 682 | } | 
|---|
| 683 | } | 
|---|
| 684 |  | 
|---|
| 685 |  | 
|---|
| 686 |  | 
|---|