connections.cgi: iptables connection tracking.

Michael Tremer michael.tremer at ipfire.org
Fri Apr 26 12:27:26 CEST 2013


Thanks.

I merged that to the next branch, which will eventually become core
update 68.

I have a bit of a problem that in the new theme you sent me, there is
not enough space for all the arrows that control the sorting.

Also, rendering the table takes ages on my system because it is so long.
Could you check if there is any chance to increase performance and to
add a counter which shows the number of connections at the top?!

-Michael

On Thu, 2013-04-25 at 19:05 +0200, Kay-Michael Köhler wrote:
> There you go
> 
> 
> The bash script "consort.sh" finally goes to /usr/local/bin.
> 
> 
> 
> 2013/4/25 Michael Tremer <michael.tremer at ipfire.org>
>         Hi Kay,
>         
>         could you please send this patch attached to the email? My
>         email client
>         shows it as embedded text and all tabs or leading spaces there
>         might
>         have been have been stripped away.
>         
>         A git branch would be even better. Do you have got access to
>         our git
>         repositories? If not, you can also use github.
>         
>         -Michael
>         
>         On Sun, 2013-04-07 at 10:23 +0200, Kay-Michael Köhler wrote:
>         > I finished progress on sorting with connections.cgi and i
>         want to
>         > share with you guys.
>         >
>         >
>         > Green arrows for sorting on source ip, source port,
>         destination ip and
>         > destination port, protocol, connections status,
>         upload/download and
>         > ttl will now appear on iptables connections tracking WUI.
>         >
>         >
>         > It would be a pleasure to hear from you guys if you have
>         further
>         > suggestions.
>         >
>         >
>         >
>         >
>         > To keep the sorting less time consuming and with a minimum
>         memory
>         > footprint, i added a bash script what is doing all the
>         sorting and
>         > removed the sort command from the piped command line.
>         >
>         >
>         > The bash script "consort.sh" goes to /usr/local/bin.
>         >
>         >
>         > The two diffs diff against the "next" git repository:
>         >
>         >
>         > diff --git a/src/scripts/consort.sh b/src/scripts/consort.sh
>         > new file mode 100755
>         > index 0000000..1682f7a
>         > --- /dev/null
>         > +++ b/src/scripts/consort.sh
>         > @@ -0,0 +1,158 @@
>         > +#/bin/bash
>         >
>         +###############################################################################
>         > +#
>         > #
>         > +# IPFire.org - A linux based firewall
>         > #
>         > +# Copyright (C) 2007-2013  IPFire Team  <info at ipfire.org>
>         > #
>         > +#
>         > #
>         > +# This program is free software: you can redistribute it
>         and/or
>         > modify        #
>         > +# it under the terms of the GNU General Public License as
>         published
>         > by        #
>         > +# the Free Software Foundation, either version 3 of the
>         License, or
>         > #
>         > +# (at your option) any later version.
>         > #
>         > +#
>         > #
>         > +# This program is distributed in the hope that it will be
>         useful,
>         > #
>         > +# but WITHOUT ANY WARRANTY; without even the implied
>         warranty of
>         >          #
>         > +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
>         the
>         > #
>         > +# GNU General Public License for more details.
>         >          #
>         > +#
>         > #
>         > +# You should have received a copy of the GNU General Public
>         License
>         > #
>         > +# along with this program.  If not, see
>         > <http://www.gnu.org/licenses/>.       #
>         > +#
>         > #
>         >
>         +###############################################################################
>         > +
>         > +# sort conntrack table entries based on ip addresses
>         > +# @parm sort field
>         > +do_ip_sort() {
>         > + sed \
>         > + -r \
>         > + 's/.*src=([0-9\.]+).*dst=([0-9\.]+).*src=.*/\'$1'#\0/'
>         $FILE_NAME \
>         > + | sort \
>         > + -t. \
>         
>         > + -k 1,1n$SORT_ORDER -k 2,2n$SORT_ORDER -k 3,3n$SORT_ORDER
>         -k 4,4n
>         > $SORT_ORDER \
>         > + | sed \
>         > + -r \
>         > + 's/.*#(.*)/\1/'
>         > +}
>         > +
>         > +# sort conntrack table entries based on port addresses
>         > +# @parm sort field
>         > +do_port_sort() {
>         > + sed \
>         > + -r \
>         > + 's/.*sport=([0-9]+).*dport=([0-9]+).*src=.*/\'$1'#\0/'
>         $FILE_NAME \
>         > + | sort \
>         > + -t# \
>         > + -k 1,1n$SORT_ORDER \
>         > + | sed \
>         > + -r \
>         > + 's/.*#(.*)/\1/'
>         > +}
>         > +
>         
>         > +# sort conntrack table entries based on protocol
>         > +do_protocol_sort() {
>         > + sed \
>         > + -r \
>         > + 's/^[0-9a-zA-Z]+[ ]+[0-9]+[ ]+([a-zA-Z0-9]+)/\1#\0/'
>         $FILE_NAME \
>         > + | sort \
>         > + -t# \
>         > + -k 1,1$SORT_ORDER  \
>         > + | sed \
>         > + -r \
>         > + 's/.*#(.*)/\1/'
>         > +}
>         > +
>         > +# sort conntrack table entries based on connection status
>         > +do_status_sort() {
>         > + sed \
>         > + -r \
>         > +
>         >
>         's/^[0-9a-zA-Z]+[ ]+[0-9]+[ ]+[a-zA-Z0-9]+[ ]+[0-9]+[ ]+[0-9]+[ ]+([a-zA-Z_0-9]+)[ ]+|^[0-9a-zA-Z]+[ ]+[0-9]+[ ]+[a-zA-Z0-9]+[ ]+[0-9]+[ ]+[0-9]+([ ]+)/\1#\0/' $FILE_NAME \
>         > + | sort \
>         > + -t# \
>         > + -k 1,1$SORT_ORDER  \
>         > + | sed \
>         > + -r \
>         > + 's/.*#(.*)/\1/'
>         > +}
>         > +
>         > +# sort conntrack table entries based on connection time to
>         life
>         > +do_ttl_sort() {
>         > + sed \
>         > + -r \
>         > +
>         >
>         's/^[0-9a-zA-Z]+[ ]+[0-9]+[ ]+[a-zA-Z0-9]+[ ]+[0-9]+[ ]+([0-9]+)[ ]+/\1#\0/' $FILE_NAME \
>         > + | sort \
>         > + -t# \
>         > + -k 1,1n$SORT_ORDER  \
>         > + | sed \
>         > + -r \
>         > + 's/.*#(.*)/\1/'
>         > +}
>         > +
>         > +# sort conntrack table entries based on downloaded bytes
>         > +do_downloaded_bytes_sort() {
>         > + sed \
>         > + -r \
>         > + 's/.*src=.*bytes=([0-9]+).*src=/\1#\0/' $FILE_NAME \
>         > + | sort \
>         > + -t# \
>         > + -k 1,1n$SORT_ORDER  \
>         > + | sed \
>         > + -r \
>         > + 's/.*#(.*)/\1/'
>         > +}
>         > +
>         > +# sort conntrack table entries based on uploaded bytes
>         > +do_uploaded_bytes_sort() {
>         > + sed \
>         > + -r \
>         > + 's/.*src=.*bytes=([0-9]+).*/\1#\0/' $FILE_NAME \
>         > + | sort \
>         > + -t# \
>         > + -k 1,1n$SORT_ORDER  \
>         > + | sed \
>         > + -r \
>         > + 's/.*#(.*)/\1/'
>         > +}
>         > +
>         > +SORT_ORDER=
>         > +FILE_NAME=
>         > +
>         > +if [ $# -lt 2 ]; then
>         > + echo "Usage: consort <sort criteria
>         > 1=srcIp,2=dstIp,3=srcPort,4=dstPort,5=protocol,6=connection
>         status>
>         > <a=ascending,d=descending> [input file]"
>         > + echo " consort.sh 1 a a.txt"
>         > + echo " cat a.txt | consort 1 d"
>         > + exit;
>         > +fi
>         > +
>         > +if [[ 'a d A D' =~ $2 ]]; then
>         > + if [[ 'd D' =~ $2 ]]; then
>         > + SORT_ORDER=r
>         > + fi
>         > +else
>         > + echo "Unknown sort order \"$2\""
>         > + exit;
>         > +fi
>         > +
>         > +if [ $# == 3 ]; then
>         > + if [ ! -f $3 ]; then
>         > + echo "File not found."
>         > + exit;
>         > + fi
>         > + FILE_NAME=$3
>         > +fi
>         > +
>         > +if [[ '1 2' =~ $1 ]]; then
>         > + do_ip_sort $1
>         > +elif [[ '3 4' =~ $1 ]]; then
>         > + do_port_sort $(($1-2))
>         > +elif [[ '5' =~ $1 ]]; then
>         > + do_protocol_sort
>         > +elif [[ '6' =~ $1 ]]; then
>         > + do_status_sort
>         > +elif [[ '7' =~ $1 ]]; then
>         > + do_ttl_sort
>         > +elif [[ '8' =~ $1 ]]; then
>         > + do_downloaded_bytes_sort
>         > +elif [[ '9' =~ $1 ]]; then
>         > + do_uploaded_bytes_sort
>         > +else
>         > + echo "Unknown sort criteria \"$1\""
>         > +fi
>         >
>         >
>         >
>         >
>         >
>         >
>         >
>         >
>         >
>         >
>         > diff --git a/html/cgi-bin/connections.cgi
>         > b/html/cgi-bin/connections.cgi
>         > index 1edf3e5..d566cf7 100644
>         > --- a/html/cgi-bin/connections.cgi
>         > +++ b/html/cgi-bin/connections.cgi
>         > @@ -34,6 +34,31 @@
>         >
>         >  my $colour_multicast = "#A0A0A0";
>         >
>         > +# sort arguments for connection tracking table
>         > +# the sort field. eg. 1=src IP, 2=dst IP, 3=src port, 4=dst
>         port
>         > +my $SORT_FIELD = 0;
>         > +# the sort order. (a)scending orr (d)escending
>         > +my $SORT_ORDER = 0;
>         > +# cgi query arguments
>         > +my %cgiin;
>         > +# debug mode
>         > +my $debug = 0;
>         > +
>         > +# retrieve query arguments
>         > +# note: let a-z A-Z and 0-9 pass as value only
>         > +if (length ($ENV{'QUERY_STRING'}) > 0){
>         > + my $name;
>         > + my $value;
>         > + my $buffer = $ENV{'QUERY_STRING'};
>         > + my @pairs = split(/&/, $buffer);
>         > + foreach my $pair (@pairs){
>         > + ($name, $value) = split(/=/, $pair);
>         > + $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",
>         hex($1))/eg; # e.g.
>         > "%20" => " "
>         > + $value =~ s/[^a-zA-Z0-9]*//g; # a-Z 0-9 will pass
>         > + $cgiin{$name} = $value;
>         > + }
>         > +}
>         > +
>         >  &Header::showhttpheaders();
>         >
>         >  my @network=();
>         > @@ -43,12 +68,40 @@
>         >  my %netsettings=();
>         
>         >  &General::readhash("${General::swroot}/ethernet/settings",
>         \%
>         > netsettings);
>         >
>         > +# output cgi query arrguments to browser on debug
>         > +if ( $debug ){
>         > + &Header::openbox('100%', 'center', 'DEBUG');
>         > + my $debugCount = 0;
>         > + foreach my $line (sort keys %cgiin) {
>         > + print "$line = '$cgiin{$line}'<br />\n";
>         > + $debugCount++;
>         > + }
>         > + print " Count: $debugCount\n";
>         > + &Header::closebox();
>         > +}
>         > +
>         >  #workaround to suppress a warning when a variable is used
>         only once
>         >  my @dummy = ( ${Header::table1colour} );
>         >  undef (@dummy);
>         >
>         > -# Read the connection tracking table.
>         > -open(CONNTRACK, "/usr/local/bin/getconntracktable | sort -k
>         5,5
>         > --numeric-sort --reverse |") or die "Unable to read
>         conntrack table";
>         > +# check sorting arguments
>         > +if ( $cgiin{'sort_field'} ~~
>         [ '1','2','3','4','5','6','7','8','9' ]
>         > ) {
>         > + $SORT_FIELD = $cgiin{'sort_field'};
>         > +
>         > + if ( $cgiin{'sort_order'} ~~ [ 'a','d','A','D' ] ) {
>         > + $SORT_ORDER = lc($cgiin{'sort_order'});
>         > + }
>         > +}
>         > +
>         > +# Read and sort the connection tracking table
>         > +# do sorting
>         > +if ($SORT_FIELD and $SORT_ORDER) {
>         > + # field sorting when sorting arguments are sane
>         > + open(CONNTRACK, "/usr/local/bin/getconntracktable
>         > | /usr/local/bin/consort.sh $SORT_FIELD $SORT_ORDER |") or
>         die "Unable
>         > to read conntrack table";
>         > +} else {
>         > + # default sorting with no query arguments
>         > + open(CONNTRACK, "/usr/local/bin/getconntracktable | sort
>         -k 5,5
>         > --numeric-sort --reverse |") or die "Unable to read
>         conntrack table";
>         > +}
>         >  my @conntrack = <CONNTRACK>;
>         >  close(CONNTRACK);
>         >
>         > @@ -263,21 +316,81 @@
>         >   <br>
>         >  END
>         >
>         > +if ($SORT_FIELD and $SORT_ORDER) {
>         > + my @sort_field_name = (
>         > + $Lang::tr{'source ip'},
>         > + $Lang::tr{'destination ip'},
>         > + $Lang::tr{'source port'},
>         > + $Lang::tr{'destination port'},
>         > + $Lang::tr{'protocol'},
>         > + $Lang::tr{'connection'}.' '.$Lang::tr{'status'},
>         > + $Lang::tr{'expires'}.' ('.$Lang::tr{'seconds'}.')',
>         > + $Lang::tr{'download'},
>         > + $Lang::tr{'upload'}
>         > + );
>         > + my $sort_order_name;
>         > + if (lc($SORT_ORDER) eq "a") {
>         > + $sort_order_name = $Lang::tr{'sort ascending'};
>         > + } else {
>         > + $sort_order_name = $Lang::tr{'sort descending'};
>         > + }
>         > +
>         > +print <<END
>         > + <div style="font-weight:bold;margin:10px;font-size: 70%">
>         > + $sort_order_name: $sort_field_name[$SORT_FIELD-1]
>         > + </div>
>         > +END
>         > +;
>         > +}
>         > +
>         >  # Print table header.
>         >  print <<END;
>         >   <table width='100%'>
>         > - <tr>
>         > + <tr valign="top"">
>         > + <th align='center'>
>         > + <a href="?sort_field=5&sort_order=d"><img
>         style="width:10px"
>         > src="/images/up.gif"></a>
>         > + <a href="?sort_field=5&sort_order=a"><img
>         style="width:10px"
>         > src="/images/down.gif"></a>
>         > + </th>
>         > + <th align='center' colspan="2">
>         > + <a href="?sort_field=1&sort_order=d"><img
>         style="width:10px"
>         > src="/images/up.gif"></a>
>         > + <a href="?sort_field=1&sort_order=a"><img
>         style="width:10px"
>         > src="/images/down.gif"></a>
>         > +         
>         > + <a href="?sort_field=3&sort_order=d"><img
>         style="width:10px"
>         > src="/images/up.gif"></a>
>         > + <a href="?sort_field=3&sort_order=a"><img
>         style="width:10px"
>         > src="/images/down.gif"></a>
>         > + </th>
>         > + <th align='center' colspan="2">
>         > + <a href="?sort_field=2&sort_order=d"><img
>         style="width:10px"
>         > src="/images/up.gif"></a>
>         > + <a href="?sort_field=2&sort_order=a"><img
>         style="width:10px"
>         > src="/images/down.gif"></a>
>         > +       
>         > + <a href="?sort_field=4&sort_order=d"><img
>         style="width:10px"
>         > src="/images/up.gif"></a>
>         > + <a href="?sort_field=4&sort_order=a"><img
>         style="width:10px"
>         > src="/images/down.gif"></a>
>         > + </th>
>         > + <th align='center'>
>         > + <a href="?sort_field=8&sort_order=d"><img
>         style="width:10px"
>         > src="/images/up.gif"></a>
>         > + <a href="?sort_field=8&sort_order=a"><img
>         style="width:10px"
>         > src="/images/down.gif"></a>
>         > +     
>         > + <a href="?sort_field=9&sort_order=d"><img
>         style="width:10px"
>         > src="/images/up.gif"></a>
>         > + <a href="?sort_field=9&sort_order=a"><img
>         style="width:10px"
>         > src="/images/down.gif"></a>
>         > + </th>
>         > + <th align='center'>
>         > + <a href="?sort_field=6&sort_order=d"><img
>         style="width:10px"
>         > src="/images/up.gif"></a>
>         > + <a href="?sort_field=6&sort_order=a"><img
>         style="width:10px"
>         > src="/images/down.gif"></a>
>         > + </th>
>         > + <th align='center'>
>         > + <a href="?sort_field=7&sort_order=d"><img
>         style="width:10px"
>         > src="/images/up.gif"></a>
>         > + <a href="?sort_field=7&sort_order=a"><img
>         style="width:10px"
>         > src="/images/down.gif"></a>
>         > + </th>
>         > + </tr>
>         > + <tr valign="top"">
>         >   <th align='center'>
>         >   $Lang::tr{'protocol'}
>         >   </th>
>         > - <th align='center'>
>         > + <th align='center' colspan="2">
>         >   $Lang::tr{'source ip and port'}
>         >   </th>
>         > - <th> </th>
>         > - <th align='center'>
>         > + <th align='center' colspan="2">
>         >   $Lang::tr{'dest ip and port'}
>         >   </th>
>         > - <th> </th>
>         >   <th align='center'>
>         >   $Lang::tr{'download'} /
>         >   <br>$Lang::tr{'upload'}
>         >
>         >
>         > 2013/3/25 Michael Tremer <michael.tremer at ipfire.org>
>         >         Hey,
>         >
>         >         a shell script is not the best way how to sort
>         things, but I
>         >         think we
>         >         can accept this because before the current version
>         of the CGI
>         >         file,
>         >         there was a lot of sorting done with shell commands
>         as well.
>         >
>         >         I did not try to run your code, because I am waiting
>         for the
>         >         other "two
>         >         more sorting options".
>         >
>         >         Michael
>         >
>         >         On Sat, 2013-03-23 at 09:38 +0100, Kay-Michael
>         Köhler wrote:
>         >         > I did some progress on sorting with
>         connections.cgi and i
>         >         want to
>         >         > share with you guys.
>         >         >
>         >         >
>         >         > To keep the sorting less time consuming and with a
>         minimum
>         >         memory
>         >         > footprint, i added a bash script what is doing all
>         the
>         >         sorting and
>         >         > removed the sort command from the piped command
>         line.
>         >         >
>         >         >
>         >         > Eight green arrows for sorting on source ip,
>         source port,
>         >         destination
>         >         > ip and destination port will now appear on
>         iptables
>         >         connections
>         >         > tracking WUI.
>         >         >
>         >         >
>         >         > I will add two more sorting option later after
>         finished some
>         >         other
>         >         > work for ipfire.
>         >         >
>         >         >
>         >         > The bash script "consort.sh" goes
>         to /usr/local/bin.
>         >         >
>         >         >
>         >         > Ok, now the two diffs to the actual git
>         >         >
>         >         >
>         >         > diff --git a/src/scripts/consort.sh
>         b/src/scripts/consort.sh
>         >         > new file mode 100755
>         >         > index 0000000..1633beb
>         >         > --- /dev/null
>         >         > +++ b/src/scripts/consort.sh
>         >         > @@ -0,0 +1,83 @@
>         >         > +#/bin/bash
>         >         >
>         >
>         +###############################################################################
>         >         > +#
>         >         > #
>         >         > +# IPFire.org - A linux based firewall
>         >         > #
>         >         > +# Copyright (C) 2007-2013  IPFire Team
>          <info at ipfire.org>
>         >         > #
>         >         > +#
>         >         > #
>         >         > +# This program is free software: you can
>         redistribute it
>         >         and/or
>         >         > modify        #
>         >         > +# it under the terms of the GNU General Public
>         License as
>         >         published
>         >         > by        #
>         >         > +# the Free Software Foundation, either version 3
>         of the
>         >         License, or
>         >         > #
>         >         > +# (at your option) any later version.
>         >         > #
>         >         > +#
>         >         > #
>         >         > +# This program is distributed in the hope that it
>         will be
>         >         useful,
>         >         > #
>         >         > +# but WITHOUT ANY WARRANTY; without even the
>         implied
>         >         warranty of
>         >         >          #
>         >         > +# MERCHANTABILITY or FITNESS FOR A PARTICULAR
>         PURPOSE.  See
>         >         the
>         >         > #
>         >         > +# GNU General Public License for more details.
>         >         >          #
>         >         > +#
>         >         > #
>         >         > +# You should have received a copy of the GNU
>         General Public
>         >         License
>         >         > #
>         >         > +# along with this program.  If not, see
>         >         > <http://www.gnu.org/licenses/>.       #
>         >         > +#
>         >         > #
>         >         >
>         >
>         +###############################################################################
>         >         > +
>         >         > +# sort conntrack table entries based on ip
>         addresses
>         >         > +# @parm sort field
>         >         > +do_ip_sort() {
>         >         > + sed \
>         >         > + -r \
>         >         > + 's/.*src=([0-9\.]+).*dst=([0-9
>         \.]+).*src=.*/\'$1'#\0/'
>         >         $FILE_NAME \
>         >         > + | sort \
>         >         > + -t. \
>         >         > + -k 1,1n$SORT_ORDER -k 2,2n$SORT_ORDER -k 3,3n
>         $SORT_ORDER
>         >         -k 4,4n
>         >         > $SORT_ORDER \
>         >         > + | sed \
>         >         > + -r \
>         >         > + 's/.*#(.*)/\1/'
>         >         > +}
>         >         > +
>         >         > +# sort conntrack table entries based on port
>         addresses
>         >         > +# @parm sort field
>         >         > +do_port_sort() {
>         >         > + sed \
>         >         > + -r \
>         >         > +
>         's/.*sport=([0-9]+).*dport=([0-9]+).*src=.*/\'$1'#\0/'
>         >         $FILE_NAME \
>         >         > + | sort \
>         >         > + -t# \
>         >         > + -k 1,1n$SORT_ORDER \
>         >         > + | sed \
>         >         > + -r \
>         >         > + 's/.*#(.*)/\1/'
>         >         > +}
>         >         > +
>         >         > +SORT_ORDER=
>         >         > +FILE_NAME=
>         >         > +
>         >         > +if [ $# -lt 2 ]; then
>         >         > + echo "Usage: consort <sort criteria
>         >         > 1=srcIp,2=dstIp,3=srcPort,4=dstPort>
>         >         <a=ascending,d=descending> [input
>         >         > file]"
>         >         > + echo " consort.sh 1 a.txt"
>         >         > + echo " cat a.txt | consort 1"
>         >         > + exit;
>         >         > +fi
>         >         > +
>         >         > +if [[ 'a d A D' =~ $2 ]]; then
>         >         > + if [[ 'd D' =~ $2 ]]; then
>         >         > + SORT_ORDER=r
>         >         > + fi
>         >         > +else
>         >         > + echo "Unknown sort order \"$2\""
>         >         > + exit;
>         >         > +fi
>         >         > +
>         >         > +if [ $# == 3 ]; then
>         >         > + if [ ! -f $3 ]; then
>         >         > + echo "File not found."
>         >         > + exit;
>         >         > + fi
>         >         > + FILE_NAME=$3
>         >         > +fi
>         >         > +
>         >         > +if [[ '1 2' =~ $1 ]]; then
>         >         > + do_ip_sort $1
>         >         > +elif [[ '3 4' =~ $1 ]]; then
>         >         > + do_port_sort $(($1-2))
>         >         > +else
>         >         > + echo "Unknown sort criteria \"$1\""
>         >         > +fi
>         >         >
>         >         >
>         >         >
>         >         >
>         >         > diff --git a/html/cgi-bin/connections.cgi
>         >         > b/html/cgi-bin/connections.cgi
>         >         > index 1edf3e5..0c20957 100644
>         >         > --- a/html/cgi-bin/connections.cgi
>         >         > +++ b/html/cgi-bin/connections.cgi
>         >         > @@ -34,6 +34,31 @@
>         >         >
>         >         >  my $colour_multicast = "#A0A0A0";
>         >         >
>         >         > +# sort arguments for connection tracking table
>         >         > +# the sort field. eg. 1=src IP, 2=dst IP, 3=src
>         port, 4=dst
>         >         port
>         >         > +my $SORT_FIELD = 0;
>         >         > +# the sort order. (a)scending orr (d)escending
>         >         > +my $SORT_ORDER = 0;
>         >         > +# cgi query arguments
>         >         > +my %cgiin;
>         >         > +# debug mode
>         >         > +my $debug = 0;
>         >         > +
>         >         > +# retrieve query arguments
>         >         > +# note: let a-z A-Z and 0-9 pass as value only
>         >         > +if (length ($ENV{'QUERY_STRING'}) > 0){
>         >         > + my $name;
>         >         > + my $value;
>         >         > + my $buffer = $ENV{'QUERY_STRING'};
>         >         > + my @pairs = split(/&/, $buffer);
>         >         > + foreach my $pair (@pairs){
>         >         > + ($name, $value) = split(/=/, $pair);
>         >         > + $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",
>         >         hex($1))/eg; # e.g.
>         >         > "%20" => " "
>         >         > + $value =~ s/[^a-zA-Z0-9]*//g; # a-Z 0-9 will
>         pass
>         >         > + $cgiin{$name} = $value;
>         >         > + }
>         >         > +}
>         >         > +
>         >         >  &Header::showhttpheaders();
>         >         >
>         >         >  my @network=();
>         >         > @@ -43,12 +68,43 @@
>         >         >  my %netsettings=();
>         >         >
>          &General::readhash("${General::swroot}/ethernet/settings",
>         >         \%
>         >         > netsettings);
>         >         >
>         >         > +# output cgi query arrguments to browser on debug
>         >         > +if ( $debug ){
>         >         > + &Header::openbox('100%', 'center', 'DEBUG');
>         >         > + my $debugCount = 0;
>         >         > + foreach my $line (sort keys %cgiin) {
>         >         > + print "$line = '$cgiin{$line}'<br />\n";
>         >         > + $debugCount++;
>         >         > + }
>         >         > + print " Count: $debugCount\n";
>         >         > + &Header::closebox();
>         >         > +}
>         >         > +
>         >         >  #workaround to suppress a warning when a variable
>         is used
>         >         only once
>         >         >  my @dummy = ( ${Header::table1colour} );
>         >         >  undef (@dummy);
>         >         >
>         >         > -# Read the connection tracking table.
>         >         > -open(CONNTRACK, "/usr/local/bin/getconntracktable
>         | sort -k
>         >         5,5
>         >         > --numeric-sort --reverse |") or die "Unable to
>         read
>         >         conntrack table";
>         >         > +
>         >         > +
>         >         > +# check sorting arguments
>         >         > +if ( $cgiin{'sort_field'} ~~ [ '1','2','3','4' ]
>         ) {
>         >         > + $SORT_FIELD = $cgiin{'sort_field'};
>         >         > +
>         >         > + if ( $cgiin{'sort_order'} ~~ [ 'a','d','A','D' ]
>         ) {
>         >         > + $SORT_ORDER = lc($cgiin{'sort_order'});
>         >         > + }
>         >         > +}
>         >         > +
>         >         > +# Read and sort the connection tracking table
>         >         > +# do sorting
>         >         > +if ($SORT_FIELD and $SORT_ORDER) {
>         >         > + # field sorting when sorting arguments are sane
>         >         > + open(CONNTRACK,
>         "/usr/local/bin/getconntracktable
>         >         > | /usr/local/bin/consort.sh $SORT_FIELD
>         $SORT_ORDER |") or
>         >         die "Unable
>         >         > to read conntrack table";
>         >         > +} else {
>         >         > + # default sorting with no query arguments
>         >         > + open(CONNTRACK,
>         "/usr/local/bin/getconntracktable | sort
>         >         -k 5,5
>         >         > --numeric-sort --reverse |") or die "Unable to
>         read
>         >         conntrack table";
>         >         > +}
>         >         > +
>         >         >  my @conntrack = <CONNTRACK>;
>         >         >  close(CONNTRACK);
>         >         >
>         >         > @@ -263,21 +319,49 @@
>         >         >   <br>
>         >         >  END
>         >         >
>         >         > +if ($SORT_FIELD and $SORT_ORDER) {
>         >         > + my @sort_field_name = (
>         >         > + $Lang::tr{'source ip'},
>         >         > + $Lang::tr{'destination ip'},
>         >         > + $Lang::tr{'source port'},
>         >         > + $Lang::tr{'destination port'}
>         >         > + );
>         >         > + my $sort_order_name;
>         >         > + if (lc($SORT_ORDER) eq "a") {
>         >         > + $sort_order_name = $Lang::tr{'sort ascending'};
>         >         > + } else {
>         >         > + $sort_order_name = $Lang::tr{'sort descending'};
>         >         > + }
>         >         > +
>         >         > +print <<END
>         >         > + <div
>         style="font-weight:bold;margin:10px;font-size: 80%">
>         >         > + $sort_order_name:
>         $sort_field_name[$SORT_FIELD-1]
>         >         > + </div>
>         >         > +END
>         >         > +;
>         >         > +}
>         >         > +
>         >         >  # Print table header.
>         >         >  print <<END;
>         >         >   <table width='100%'>
>         >         > - <tr>
>         >         > + <tr valign="top"">
>         >         >   <th align='center'>
>         >         >   $Lang::tr{'protocol'}
>         >         >   </th>
>         >         > - <th align='center'>
>         >         > + <th align='center' colspan="2">
>         >         > + <a href="?sort_field=1&sort_order=d"><img
>         >         style="width:10px"
>         >         > src="/images/up.gif"></a>
>         >         > + <a href="?sort_field=1&sort_order=a"><img
>         >         style="width:10px"
>         >         > src="/images/down.gif"></a>
>         >         >   $Lang::tr{'source ip and port'}
>         >         > + <a href="?sort_field=3&sort_order=d"><img
>         >         style="width:10px"
>         >         > src="/images/up.gif"></a>
>         >         > + <a href="?sort_field=3&sort_order=a"><img
>         >         style="width:10px"
>         >         > src="/images/down.gif"></a>
>         >         >   </th>
>         >         > - <th> </th>
>         >         > - <th align='center'>
>         >         > + <th align='center' colspan="2">
>         >         > + <a href="?sort_field=2&sort_order=d"><img
>         >         style="width:10px"
>         >         > src="/images/up.gif"></a>
>         >         > + <a href="?sort_field=2&sort_order=a"><img
>         >         style="width:10px"
>         >         > src="/images/down.gif"></a>
>         >         >   $Lang::tr{'dest ip and port'}
>         >         > + <a href="?sort_field=4&sort_order=d"><img
>         >         style="width:10px"
>         >         > src="/images/up.gif"></a>
>         >         > + <a href="?sort_field=4&sort_order=a"><img
>         >         style="width:10px"
>         >         > src="/images/down.gif"></a>
>         >         >   </th>
>         >         > - <th> </th>
>         >         >   <th align='center'>
>         >         >   $Lang::tr{'download'} /
>         >         >   <br>$Lang::tr{'upload'}
>         >         >
>         >         >
>         >         >
>         >         >
>         >         > 2013/3/10 Michael Tremer
>         <michael.tremer at ipfire.org>
>         >         >         Hi,
>         >         >
>         >         >         sure, this is fine with me. Just try to
>         make the
>         >         sorting
>         >         >         process
>         >         >         efficient so that even ten thousands of
>         connections
>         >         are
>         >         >         properly
>         >         >         displayed.
>         >         >
>         >         >         -Michael
>         >         >
>         >         >         On Sun, 2013-03-10 at 17:01 +0100,
>         Kay-Michael
>         >         Köhler wrote:
>         >         >         > Hello everyone
>         >         >         >
>         >         >         >
>         >         >         > i'm going to start development on
>         connections.cgi
>         >         to have
>         >         >         some kind of
>         >         >         > sorting at "iptables connection
>         >         >         tracking" (status->connections)
>         >         >         >
>         >         >         >
>         >         >         > I think it is a good idea to have the
>         following
>         >         (asc/desc)
>         >         >         sort
>         >         >         > options:
>         >         >         >
>         >         >         >
>         >         >         > "Protocol"
>         >         >         > "Source IP:Port"
>         >         >         > "Destination IP Port"
>         >         >         > "Connection status"
>         >         >         >
>         >         >         >
>         >         >         > If you guys agree it would be a please
>         for me to
>         >         share and
>         >         >         post the
>         >         >         > patch here when i'm done.
>         >         >         >
>         >         >         >
>         >         >         > Regards
>         >         >         >
>         >         >         >
>         >         >         > Kay-Michael
>         >         >
>         >         >         >
>         _______________________________________________
>         >         >         > Development mailing list
>         >         >         > Development at lists.ipfire.org
>         >         >         >
>         >         http://lists.ipfire.org/mailman/listinfo/development
>         >         >
>         >         >
>         _______________________________________________
>         >         >         Development mailing list
>         >         >         Development at lists.ipfire.org
>         >         >
>         http://lists.ipfire.org/mailman/listinfo/development
>         >         >
>         >         >
>         >
>         >
>         >
>         >
>         
>         
> 
> 
> 
> 
> -- 
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> 



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