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index cf26ca49fc88e24b5b22e622bea255cd86e33585..de26b59b58b6b0cc279294b907a74ac3b4f2f754 100644 (file)
use Exporter;
@ISA = qw(Exporter);
-@EXPORT = qw(create_xml_hash send_msg_hash2address get_content_from_xml_hash add_content2xml_hash create_xml_string encrypt_msg decrypt_msg create_ciphering transform_msg2hash get_time send_msg);
-
+my @functions = (
+ "create_xml_hash",
+ "get_content_from_xml_hash",
+ "add_content2xml_hash",
+ "create_xml_string",
+ "transform_msg2hash",
+ "get_time",
+ "build_msg",
+ "db_res2xml",
+ "db_res2si_msg",
+ "get_where_statement",
+ "get_select_statement",
+ "get_update_statement",
+ "get_limit_statement",
+ "get_orderby_statement",
+ "get_dns_domains",
+ "get_logged_in_users",
+ );
+@EXPORT = @functions;
use strict;
use warnings;
use IO::Socket::INET;
use MIME::Base64;
use XML::Simple;
+my $op_hash = {
+ 'eq' => '=',
+ 'ne' => '!=',
+ 'ge' => '>=',
+ 'gt' => '>',
+ 'le' => '<=',
+ 'lt' => '<',
+};
BEGIN {}
my $xml = new XML::Simple();
-sub process_incoming_msg {
- return;
-}
-
sub daemon_log {
my ($msg, $level) = @_ ;
&main::daemon_log($msg, $level);
}
+
+
#=== FUNCTION ================================================================
# NAME: create_xml_hash
# PARAMETERS: header - string - message header (required)
}
+#=== FUNCTION ================================================================
+# NAME: create_xml_string
+# PARAMETERS: xml_hash - hash - hash from function create_xml_hash
+# RETURNS: xml_string - string - xml string representation of the hash
+# DESCRIPTION: transform the hash to a string using XML::Simple module
+#===============================================================================
+sub create_xml_string {
+ my ($xml_hash) = @_ ;
+ my $xml_string = $xml->XMLout($xml_hash, RootName => 'xml');
+ #$xml_string =~ s/[\n]+//g;
+ #daemon_log("create_xml_string:",7);
+ #daemon_log("$xml_string\n", 7);
+ return $xml_string;
+}
+
+
sub transform_msg2hash {
my ($msg) = @_ ;
my $hash = $xml->XMLin($msg, ForceArray=>1);
# xml tags without a content are created as an empty hash
# substitute it with an empty list
- while( my ($xml_tag, $xml_content) = each %{ $hash } ) {
- if( 1 == @{ $xml_content } ) {
- # there is only one element in xml_content list ...
- my $element = @{ $xml_content }[0];
- if( ref($element) eq "HASH" ) {
- # and this element is an hash ...
- my $len_element = keys %{ $element };
- if( $len_element == 0 ) {
- # and this hash is empty, then substitute the xml_content
- # with an empty string in list
- $hash->{$xml_tag} = [ "none" ];
+ eval {
+ while( my ($xml_tag, $xml_content) = each %{ $hash } ) {
+ if( 1 == @{ $xml_content } ) {
+ # there is only one element in xml_content list ...
+ my $element = @{ $xml_content }[0];
+ if( ref($element) eq "HASH" ) {
+ # and this element is an hash ...
+ my $len_element = keys %{ $element };
+ if( $len_element == 0 ) {
+ # and this hash is empty, then substitute the xml_content
+ # with an empty string in list
+ $hash->{$xml_tag} = [ "none" ];
+ }
}
}
}
+ };
+ if( $@ ) {
+ $hash = undef;
}
return $hash;
}
-#=== FUNCTION ================================================================
-# NAME: send_msg_hash2address
-# PARAMETERS: msg_hash - hash - xml_hash created with function create_xml_hash
-# PeerAddr string - socket address to send msg
-# PeerPort string - socket port, if not included in socket address
-# RETURNS: nothing
-# DESCRIPTION: ????
-#===============================================================================
-sub send_msg_hash2address ($$$){
- my ($msg_hash, $address, $passwd) = @_ ;
-
- # fetch header for logging
- my $header = @{$msg_hash->{header}}[0];
-
- # generate xml string
- my $msg_xml = &create_xml_string($msg_hash);
-
- # create ciphering object
- my $act_cipher = &create_ciphering($passwd);
-
- # encrypt xml msg
- my $crypted_msg = &encrypt_msg($msg_xml, $act_cipher);
-
- # opensocket
- my $socket = &open_socket($address);
- if(not defined $socket){
- daemon_log("cannot send '$header'-msg to $address , server not reachable", 5);
- return 1;
- }
-
- # send xml msg
- print $socket $crypted_msg."\n";
-
- close $socket;
-
- daemon_log("send '$header'-msg to $address", 1);
- daemon_log("message:\n$msg_xml", 8);
- return 0;
-}
-
-
-#=== FUNCTION ================================================================
-# NAME: get_content_from_xml_hash
-# PARAMETERS: xml_ref - ref - reference of the xml hash
-# element - string - key of the value you want
-# RETURNS: value - string - if key is either header, target or source
-# value - list - for all other keys in xml hash
-# DESCRIPTION:
-#===============================================================================
-sub get_content_from_xml_hash {
- my ($xml_ref, $element) = @_ ;
- #my $result = $main::xml_ref->{$element};
- #if( $element eq "header" || $element eq "target" || $element eq "source") {
- # return @$result[0];
- #}
- my @result = $xml_ref->{$element};
- return \@result;
-}
-
-
#=== FUNCTION ================================================================
# NAME: add_content2xml_hash
# PARAMETERS: xml_ref - ref - reference to a hash from function create_xml_hash
}
-#=== FUNCTION ================================================================
-# NAME: create_xml_string
-# PARAMETERS: xml_hash - hash - hash from function create_xml_hash
-# RETURNS: xml_string - string - xml string representation of the hash
-# DESCRIPTION: transform the hash to a string using XML::Simple module
-#===============================================================================
-sub create_xml_string {
- my ($xml_hash) = @_ ;
- my $xml_string = $xml->XMLout($xml_hash, RootName => 'xml');
- #$xml_string =~ s/[\n]+//g;
- #daemon_log("create_xml_string:",7);
- #daemon_log("$xml_string\n", 7);
- return $xml_string;
-}
-
-
-#=== FUNCTION ================================================================
-# NAME: encrypt_msg
-# PARAMETERS: msg - string - message to encrypt
-# my_cipher - ref - reference to a Crypt::Rijndael object
-# RETURNS: crypted_msg - string - crypted message
-# DESCRIPTION: crypts the incoming message with the Crypt::Rijndael module
-#===============================================================================
-sub encrypt_msg {
- my ($msg, $my_cipher) = @_;
- if(not defined $my_cipher) { print "no cipher object\n"; }
- $msg = "\0"x(16-length($msg)%16).$msg;
- $msg = $my_cipher->encrypt($msg);
- chomp($msg = &encode_base64($msg));
- return $msg;
-}
-
-
-#=== FUNCTION ================================================================
-# NAME: decrypt_msg
-# PARAMETERS: crypted_msg - string - message to decrypt
-# my_cipher - ref - reference to a Crypt::Rijndael object
-# RETURNS: msg - string - decrypted message
-# DESCRIPTION: decrypts the incoming message with the Crypt::Rijndael module
-#===============================================================================
-sub decrypt_msg {
- my ($msg, $my_cipher) = @_ ;
- if(defined $msg && defined $my_cipher) {
- $msg = &decode_base64($msg);
- }
- $msg = $my_cipher->decrypt($msg);
- $msg =~ s/\0*//g;
- return $msg;
-}
-
-
-#=== FUNCTION ================================================================
-# NAME: create_ciphering
-# PARAMETERS: passwd - string - used to create ciphering
-# RETURNS: cipher - object
-# DESCRIPTION: creates a Crypt::Rijndael::MODE_CBC object with passwd as key
-#===============================================================================
-sub create_ciphering {
- my ($passwd) = @_;
- $passwd = substr(md5_hex("$passwd") x 32, 0, 32);
- my $iv = substr(md5_hex('GONICUS GmbH'),0, 16);
-
- #daemon_log("iv: $iv", 7);
- #daemon_log("key: $passwd", 7);
- my $my_cipher = Crypt::Rijndael->new($passwd , Crypt::Rijndael::MODE_CBC());
- $my_cipher->set_iv($iv);
- return $my_cipher;
-}
-
-
-#=== FUNCTION ================================================================
-# NAME: open_socket
-# PARAMETERS: PeerAddr string something like 192.168.1.1 or 192.168.1.1:10000
-# [PeerPort] string necessary if port not appended by PeerAddr
-# RETURNS: socket IO::Socket::INET
-# DESCRIPTION: open a socket to PeerAddr
-#===============================================================================
-sub open_socket {
- my ($PeerAddr, $PeerPort) = @_ ;
- if(defined($PeerPort)){
- $PeerAddr = $PeerAddr.":".$PeerPort;
- }
- my $socket;
- $socket = new IO::Socket::INET(PeerAddr => $PeerAddr,
- Porto => "tcp",
- Type => SOCK_STREAM,
- Timeout => 5,
- );
- if(not defined $socket) {
- return;
- }
- &daemon_log("open_socket: $PeerAddr", 7);
- return $socket;
-}
-
-
sub get_time {
my ($seconds, $minutes, $hours, $monthday, $month,
$year, $weekday, $yearday, $sommertime) = localtime(time);
#=== FUNCTION ================================================================
-# NAME: send_msg
+# NAME: build_msg
# DESCRIPTION: Send a message to a destination
# PARAMETERS: [header] Name of the header
# [from] sender ip
# package
# RETURNS: nothing
#===============================================================================
-sub send_msg ($$$$$) {
- my ($header, $from, $to, $data, $hostkey) = @_;
+sub build_msg ($$$$) {
+ my ($header, $from, $to, $data) = @_;
my $out_hash = &create_xml_hash($header, $from, $to);
&add_content2xml_hash($out_hash, $key, $value);
}
}
+ my $out_msg = &create_xml_string($out_hash);
+ return $out_msg;
+}
+
+
+sub db_res2xml {
+ my ($db_res) = @_ ;
+ my $xml = "";
+
+ my $len_db_res= keys %{$db_res};
+ for( my $i= 1; $i<= $len_db_res; $i++ ) {
+ $xml .= "\n<answer$i>";
+ my $hash= $db_res->{$i};
+ while ( my ($column_name, $column_value) = each %{$hash} ) {
+ $xml .= "<$column_name>";
+ my $xml_content;
+ if( $column_name eq "xmlmessage" ) {
+ $xml_content = &encode_base64($column_value);
+ } else {
+ $xml_content = $column_value;
+ }
+ $xml .= $xml_content;
+ $xml .= "</$column_name>";
+ }
+ $xml .= "</answer$i>";
+
+ }
+
+ return $xml;
+}
+
+
+sub db_res2si_msg {
+ my ($db_res, $header, $target, $source) = @_;
+
+ my $si_msg = "<xml>";
+ $si_msg .= "<header>$header</header>";
+ $si_msg .= "<source>$source</source>";
+ $si_msg .= "<target>$target</target>";
+ $si_msg .= &db_res2xml;
+ $si_msg .= "</xml>";
+}
+
+
+sub get_where_statement {
+ my ($msg, $msg_hash) = @_;
+ my $error= 0;
+
+ my $clause_str= "";
+ if( (not exists $msg_hash->{'where'}) || (not exists @{$msg_hash->{'where'}}[0]->{'clause'}) ) {
+ $error++;
+ }
+
+ if( $error == 0 ) {
+ my @clause_l;
+ my @where = @{@{$msg_hash->{'where'}}[0]->{'clause'}};
+ foreach my $clause (@where) {
+ my $connector = $clause->{'connector'}[0];
+ if( not defined $connector ) { $connector = "AND"; }
+ $connector = uc($connector);
+ delete($clause->{'connector'});
+
+ my @phrase_l ;
+ foreach my $phrase (@{$clause->{'phrase'}}) {
+ my $operator = "=";
+ if( exists $phrase->{'operator'} ) {
+ my $op = $op_hash->{$phrase->{'operator'}[0]};
+ if( not defined $op ) {
+ &main::daemon_log("ERROR: Can not translate operator '$operator' in where ".
+ "statement to sql valid syntax. Please use 'eq', ".
+ "'ne', 'ge', 'gt', 'le', 'lt' in xml message\n", 1);
+ &main::daemon_log($msg, 8);
+ $op = "=";
+ }
+ $operator = $op;
+ delete($phrase->{'operator'});
+ }
+
+ my @xml_tags = keys %{$phrase};
+ my $tag = $xml_tags[0];
+ my $val = $phrase->{$tag}[0];
+ push(@phrase_l, "$tag$operator'$val'");
+ }
+ my $clause_str .= join(" $connector ", @phrase_l);
+ push(@clause_l, $clause_str);
+ }
+
+ if( not 0 == @clause_l ) {
+ $clause_str = join(" AND ", @clause_l);
+ $clause_str = "WHERE ($clause_str) ";
+ }
+ }
+
+ return $clause_str;
+}
+
+sub get_select_statement {
+ my ($msg, $msg_hash)= @_;
+ my $select = "*";
+ if( exists $msg_hash->{'select'} ) {
+ my $select_l = \@{$msg_hash->{'select'}};
+ $select = join(' AND ', @{$select_l});
+ }
+ return $select;
+}
+
+
+sub get_update_statement {
+ my ($msg, $msg_hash) = @_;
+ my $error= 0;
+ my $update_str= "";
+ my @update_l;
+
+ if( not exists $msg_hash->{'update'} ) { $error++; };
+
+ if( $error == 0 ) {
+ my $update= @{$msg_hash->{'update'}}[0];
+ while( my ($tag, $val) = each %{$update} ) {
+ my $val= @{$update->{$tag}}[0];
+ push(@update_l, "$tag='$val'");
+ }
+ if( 0 == @update_l ) { $error++; };
+ }
+
+ if( $error == 0 ) {
+ $update_str= join(', ', @update_l);
+ $update_str= "SET $update_str ";
+ }
+
+ return $update_str;
+}
+
+sub get_limit_statement {
+ my ($msg, $msg_hash)= @_;
+ my $error= 0;
+ my $limit_str = "";
+ my ($from, $to);
+
+ if( not exists $msg_hash->{'limit'} ) { $error++; };
+
+ if( $error == 0 ) {
+ eval {
+ my $limit= @{$msg_hash->{'limit'}}[0];
+ $from= @{$limit->{'from'}}[0];
+ $to= @{$limit->{'to'}}[0];
+ };
+ if( $@ ) {
+ $error++;
+ }
+ }
+
+ if( $error == 0 ) {
+ $limit_str= "LIMIT $from, $to";
+ }
+
+ return $limit_str;
+}
+
+sub get_orderby_statement {
+ my ($msg, $msg_hash)= @_;
+ my $error= 0;
+ my $order_str= "";
+ my $order;
+
+ if( not exists $msg_hash->{'orderby'} ) { $error++; };
+
+ if( $error == 0) {
+ eval {
+ $order= @{$msg_hash->{'orderby'}}[0];
+ };
+ if( $@ ) {
+ $error++;
+ }
+ }
+
+ if( $error == 0 ) {
+ $order_str= "ORDER BY $order";
+ }
+
+ return $order_str;
+}
+
+sub get_dns_domains() {
+ my $line;
+ my @searches;
+ open(RESOLV, "</etc/resolv.conf") or return @searches;
+ while(<RESOLV>){
+ $line= $_;
+ chomp $line;
+ $line =~ s/^\s+//;
+ $line =~ s/\s+$//;
+ $line =~ s/\s+/ /;
+ if ($line =~ /^domain (.*)$/ ){
+ push(@searches, $1);
+ } elsif ($line =~ /^search (.*)$/ ){
+ push(@searches, split(/ /, $1));
+ }
+ }
+ close(RESOLV);
+
+ my %tmp = map { $_ => 1 } @searches;
+ @searches = sort keys %tmp;
+
+ return @searches;
+}
+
+
+sub get_logged_in_users {
+ my $result = qx(/usr/bin/w -hs);
+ my @res_lines;
+
+ if( defined $result ) {
+ chomp($result);
+ @res_lines = split("\n", $result);
+ }
+
+ my @logged_in_user_list;
+ foreach my $line (@res_lines) {
+ chomp($line);
+ my @line_parts = split(/\s+/, $line);
+ push(@logged_in_user_list, $line_parts[0]);
+ }
+
+ return @logged_in_user_list;
- &send_msg_hash2address($out_hash, $to, $hostkey);
}
1;