dialup_admin/bin/log_badlogins

   1 #!/usr/bin/perl
   2 #
   3 # Log failed logins in the sql database
   4 # Works with mysql and postgresql
   5 # It will read the sql parameters from the admin.conf file
   6 #
   7 # Usage:
   8 # log_badlogins <radius.log> [<admin.conf>] [all]
   9 #
  10 # Defaults:
  11 # radius.log: none
  12 # admin.conf: /usr/local/dialup_admin/conf/admin.conf
  13 # all:        no. Go to the end of the file. Don't read it all.
  14
  15 use Date::Manip qw(ParseDate UnixDate);
  16 use Digest::MD5;
  17 $|=1;
  18
  19 $file=shift||'none';
  20 $conf=shift||'/usr/local/dialup_admin/conf/admin.conf';
  21 $all_file=shift||'no';
  22 #
  23 # Uncomment to force inserts even if there are sql errors. That can
  24 # help in case there is one sql query which stops the whole failed
  25 # logins logging system from working
  26 #$force=1;
  27 #
  28 #
  29 # CHANGE THESE TO MATCH YOUR SETUP
  30 #
  31 #$regexp = 'from client localhost port 135|from client blabla ';
  32 $tmpfile='/var/tmp/sql.input';
  33 #
  34 #
  35
  36 open CONF, "<$conf"
  37         or die "Could not open configuration file\n";
  38 while(<CONF>){
  39         chomp;
  40         ($key,$val)=(split /:\s*/,$_);
  41         # Fixme : recursivly solve %{.*} replacement for $val
  42         # Fixme: Conf should be put in an associative array
  43         $sql_type = $val if ($key eq 'sql_type');
  44         $sql_server = $val if ($key eq 'sql_server');
  45         $sql_username = $val if ($key eq 'sql_username');
  46         $sql_password = $val if ($key eq 'sql_password');
  47         $sql_database = $val if ($key eq 'sql_database');
  48         $sql_accounting_table = $val if ($key eq 'sql_accounting_table');
  49         $realm_strip = $val if ($key eq 'general_strip_realms');
  50         $realm_del = $val if ($key eq 'general_realm_delimiter');
  51         $realm_for = $val if ($key eq 'general_realm_format');
  52         $domain = $val if ($key eq 'general_domain');
  53         $sql_timeout = $val if ($key eq 'sql_connect_timeout');
  54         $sql_extra = $val if ($key eq 'sql_extra_servers');
  55         $sqlcmd = $val if ($key eq 'sql_command');
  56         $clients= $val if ($key eq 'general_clients_conf');
  57 }
  58 close CONF;
  59
  60 open CLIENTS, "<$clients"
  61         or die "Could not open $clients file\n";
  62 while(<CLIENTS>){
  63         chomp;
  64         s/^\s*//g;
  65         s/\s*#.*//g;
  66         if (!/^\s*$/ && /=/) {
  67                 ($key,$val)=(split /\s*=\s*/,$_);
  68                 $client_short = $val if ($key eq 'shortname');
  69         } else {
  70                 if (/\{/) {
  71                         s/.*client\s+([^\s]*)\s+\{.*$/\1/;
  72                         if (/^\d+\.\d+\.\d+\.\d+/) {
  73                                 $client = $_;
  74                         } else {
  75                                 if (/\./ || /localhost/) {
  76                                         $name = $_ ;
  77                                 } else {
  78                                         $name = $_.".".$domain;
  79                                 }
  80                                 $addr = gethostbyname $name;
  81                                 ($a,$b,$c,$d)=unpack('C4',$addr);
  82                                 $client = "$a.$b.$c.$d";
  83 #DEBUG#                         print $name." = ".$client."\n";
  84                         }
  85                 } else {
  86                         if (/\}/) {
  87                                 $client_array{$client_short} .= $client;
  88                         }
  89                 }
  90         }
  91 }
  92 close CLIENTS;
  93
  94 $realm_del = '@' if ($realm_del eq '');
  95 $realm_for = 'suffix' if ($realm_for eq '');
  96 $pass = ($sql_password ne '') ? "-p$sql_password" : '';
  97 die "SQL server not defined\n" if ($sql_server eq '');
  98
  99 die "sql_command directive is not set in admin.conf\n" if ($sqlcmd eq '');
 100 die "Could not find sql binary. Please make sure that the \$sqlcmd variable points to the right location\n" if (! -x $sqlcmd);
 101
 102 $opt = "";
 103 $opt = "-O connect_timeout=$sql_timeout" if ($sql_timeout);
 104 $opt .= " -f" if ($force);
 105 @servers = (split /\s+/,$sql_extra) if ($sql_extra ne '');
 106 unshift @servers, $sql_server;
 107
 108 open LOG, "<$file"
 109         or die "Could not open file $file\n";
 110
 111 seek LOG, 0, 2 if ($all_file eq 'no');
 112 for(;;){
 113         while(<LOG>){
 114                 $do=0;
 115                 chomp;
 116                 next if ($regexp ne '' && !/$regexp/);
 117                 if ($_ ne ''){
 118                         $user = $nas = $port = $caller = '-';
 119                         if (/Login incorrect/){
 120                                 if (/Login incorrect \((.+?)\):/){
 121                                         $cause = "Login-Incorrect ($1)";
 122                                 }else{
 123                                         $cause='Login-Incorrect';
 124                                 }
 125                                 $do=1;
 126                         }
 127                         elsif (/Invalid user/){
 128                                 if (/Invalid user \((.+?)\):/){
 129                                         $cause = "Invalid-User ($1)";
 130                                 }else{
 131                                         $cause='Invalid-User';
 132                                 }
 133                                 $do=1;
 134                         }
 135                         elsif (/Multiple logins/){
 136                                 if (/MPP attempt/){
 137                                         $cause='Multiple-Logins (MPP Attempt)';
 138                                 }else{
 139                                         $cause='Multiple-Logins';
 140                                 }
 141                                 $do=1;
 142                         }
 143                         elsif (/(Outside allowed timespan \(.+?\)):/){
 144                                 $cause = "$1";
 145                                 $do=1;
 146                         }
 147                         if ($do){
 148                                 $date = (split / : /,$_)[0];
 149                                 $date2 = ParseDate($date);
 150                                 if ($date2){
 151                                         ($year,$mon,$mday,$hour,$min,$sec)=UnixDate($date2,'%Y','%m','%d','%H','%M','%S');
 152                                 }
 153                                 $time = "$year-$mon-$mday $hour:$min:$sec";
 154                                 if (/\[([\w\-\.\!\@\s]+?)\]\s+\(from (.+?)\)/){
 155                                         $user = $1;
 156                                         ($nas,$port) = (split /\s+/,$2)[1,3];
 157                                         if ($2 =~ /cli (.+?)$/){
 158                                                 $caller = $1;
 159                                         }
 160                                 }
 161                                 elsif (/\[([\w\-\.\!\@\s]+?)\/.+?\]\s+\(from (.+?)\)/){
 162                                         $user = $1;
 163                                         ($nas,$port) = (split /\s+/,$2)[1,3];
 164                                         if ($2 =~ /cli (.+?)$/){
 165                                                 $caller = $1;
 166                                         }
 167                                 }
 168                                 $caller='' if (!defined($caller));
 169                                 $user =~s/[^\w\-\.\d\!\@\s]//g;
 170                                 $nas =~s/[^\w\.\-]//g;
 171                                 $port =~s/[^\d]//g;
 172                                 $addr = $client_array{$nas};
 173                                 if ($user ne '' && $realm_strip eq 'yes'){
 174                                         ($one,$two) = (split /$realm_del/, $user)[0,1];
 175                                         if ($two ne ''){
 176                                                 $user = ($realm_for eq 'suffix') ? $one : $two;
 177                                         }
 178                                 }
 179                                 foreach $server (@servers){
 180                                         unlink "$tmpfile.$server" if ($delete{$server});
 181                                         open TMP, ">>$tmpfile.$server"
 182                                                 or die "Could not open temporary file\n";
 183                                         $ctx = Digest::MD5->new;
 184                                         $ctx->add($user);
 185                                         $ctx->add($addr);
 186                                         $ctx->add($port);
 187                                         $ctx->add($time);
 188                                         $ctx->add('badlogin');
 189                                         $uniqueid = $ctx->hexdigest;
 190 #DEBUG#                                 print "INSERT INTO $sql_accounting_table (UserName,AcctUniqueId,NASIPAddress,NASPortId,AcctStartTime,AcctStopTime,AcctSessionTime,AcctInputOctets,AcctOutputOctets,CallingStationId,AcctTerminateCause) VALUES ('$user','$uniqueid','$addr','$port','$time','$time','0','0','0','$caller','$cause');\n";
 191                                         print TMP "INSERT INTO $sql_accounting_table (UserName,AcctUniqueId,NASIPAddress,NASPortId,AcctStartTime,AcctStopTime,AcctSessionTime,AcctInputOctets,AcctOutputOctets,CallingStationId,AcctTerminateCause) VALUES ('$user','$uniqueid','$addr','$port','$time','$time','0','0','0','$caller','$cause');\n";
 192                                         close TMP;
 193                                         $command = "$sqlcmd -h$server $opt -u$sql_username $pass $sql_database <$tmpfile.$server" if ($sql_type eq 'mysql');
 194                                         $command = "$sqlcmd  -U $sql_username -f $tmpfile.$server $sql_database" if ($sql_type eq 'pg');
 195                                         `$command`;
 196
 197                                         $exit = $? >> 8;
 198                                         $delete{$server} = ($exit == 0) ? 1 : 0;
 199                                         print "ERROR: SQL query failed for host $server\n" if ($exit != 0);
 200                                 }
 201                         }
 202                 }
 203         }
 204         if ($all_file ne 'once') {
 205                 sleep 2;
 206                 seek LOG,0,1;
 207         } else {
 208                 exit(0);
 209         }
 210 }