mrtg-dynip-sydnet
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- #!/usr/local/bin/perl
- ##################################################################
- # Multi Dynamic IP Traffic Grapher contibution to mrtg
- ##################################################################
- #
- # Created by John Heenan <john@heenan.ironbark.id.au>
- #
- # Available from http://www.heenan.ironbark.id.au/mrtg-dynip
- #
- ##################################################################
- #
- # Distributed under the GPL copyleft of GNU
- #
- # mrtg-dynip, v 0.41b 1997/10/25
- #
- # Copyright John Heenan, with exception of datestr subroutine
- # (copied from mrtg executable) and much of internal_walk
- # subroutine (manner of using snmp modules copied from an example
- # by Simon Lenine)
- #
- ###################################################################
- #Mrtg-dynip is a contribution to MRTG, enabling MRTG to generate multi
- #interface traffic graphs for IP interfaces on hosts that do not provide
- #consistent SNMP target numbers for their interfaces. Such IP interfaces
- #include IP active serial interfaces attached to modems in a PPP dial in
- #environment. The hosts must run snmp agents. For completeness, information
- #about interface devices with unvarying SNMP target numbers, such as
- #ethernet cards, can be configured to be included.
- #Mrtg-dynip's configuration is simplest where static (or fixed) IP is not
- #used for dial into a rotary modem pool.
- #Mrtg-dynip can be considred to have sophisticated modem bank monitoring
- #capacity, when the modems carry PPP or SLIP traffic.
- #Regenerates a named 'mrtg.cfg' file to ensure snmp data remains with a
- #consistent IP number, or overridable IP number of a real physical device
- #in a dial in IP environment, rather than with an interface name which
- #can get assinged to different real physical devices, and runs mrtg on
- #the generated file.
- #Generates a web index file of stats web pages.
- #Please see the section 6 of the FAQ for this version for information on
- #for differences in interpreting graphs between some devices
- #Briefly, to someone dialling in, dynamic IP means when they dial a rotary
- #number they do not get a consistent IP address. To the service provider it
- #means a unique IP number is assinged to each telephone line/modem/port.
- #To someone dialling in, static or fixed IP means that their user name is
- #approved to use a unique IP address, whether they dial into a rotary for
- #a modem bank or into a non rotary number. To the service provider, it means
- #if someone is dialling into a rotary for a modem pool, they allow the modem
- #port use a unique approved IP number for that user, that overrides the IP
- #address used when a dial in user does not request a fixed or static IP.
- #The public community should be used, however the public community on a
- #particular host does not need to be named 'public'. This is catered for.
- #There is a large 'TODO' list for this contribution, including
- #testing use of the 'ifLastChange' snmp object.
- #SET UP
- #Runs independently of an existing configured mrtg installation. Following
- #the commented example will make the set up clearer. The examples are for a
- #live ISP using web page http://www.stats.syd.net.au, you must change values
- #for your own use
-
- # 0 Ensure the path to the perl binary is set correctly on first line
- # 1 $HTTP_Work_Dir ** Must set
- # 2 $HTTP_index_file Default index.html may be OK if unique
- # 3 $mrtg_Dir ** Must set
- # 4 $mrtgcfg_Dir Setting to $mrtgDir is probably OK
- # 5 $mrtgcfg_file Default mrtg-dynip.cfg should be OK
- # 6 $update Default will work (five minutes)
- # 7 $community_default Default for this default may be OK (public)
- # 8 $email Set to "" to show nothing
- # 9 $home_page Set to "" to show nothing
- # 10 $home_page_descr Set to "" to show nothing
- # 11 $suicidal Non zero: bomb out if there are problems
- # 12 $firewall_masq_tran_if Best to leave as 0 (zero) if sufficient
- # 13 $use_non_dyn_IP_for_tty Safe to set to 0 (the non set value)
- # 14 $Dir_PID Must set if 13 is non zero
- # 15 External settings if 13 is set to non zero
- # 16 $interfaces ** Must set
- #Ensure mrtg-dynip has executable permission. See below as to where
- #mrtg-dynip may need to be installed.
- #Place a crontab entry, consistent with update time, similar to
- #0,5,10,15,20,25,30,35,40,45,50,55 * * * * <next line continued here>
- #cd /usr/src/mrtg/mrtg-2.5/; date >>/var/log/mrtg-dynip.log;
- #<continues previous line> ./mrtg-dynip >>/var/log/mrtg-dynip.log 2>&1
- #
- #Redirecting standard output and error to a log file with an indication
- #of time from 'date' is valuable for sorting out errors and preventing
- #messages from being emailed to the root account.
- #
- #If Perl5 snmp modules are not installed in standard libraries and
- #the internal 'walk' is being used, then it is necessary to ensure
- #mrtg-dynip in installed in, and run from, a directory where the modules
- #are, typically the same directory the mrtg executable is in.
- #The most difficult part in a dynamic IP environment may be choosing the IP
- #addresses to use for the scaler constant $interfaces, as you must ensure
- #the IP address used will always correspond to the physical interface
- #device, unless exception facility configured in.
- #For Internet Service Providers running ppp dial in lines, the choice will
- #be clear. The IP addressess to use will be the 'remote' IP part of the
- #command line options for the real physical device (:remote_ip in
- #/etc/ppp/options.ttyXY file), unless static or fixed IP is allowed to
- #override this. For dial out lines that can get a variable 'remote' IP, you
- #should be able to control what remote IP you get, no matter who you dial
- #into and what remote IP they may offer you, by configuring a remote IP as
- #for a dial in line above.
- #If the final negotiated ppp address pair as seen by your machine,
- #local_ip:remote_ip, is equal to a_ip:b_ip, then the local_ip:remote_ip as
- #seen by the other machine is b_ip:a_ip. Since the remote IP seen by your
- #side of the line is the local IP as seen and negotiated by the machine on
- #the other side of the line, you can choose whatever remote IP address suits
- #your side of the connection. Specifying a 'remote' IP other than 0.0.0.0
- #will, by default with pppd, result in an IP the other machine will have to
- #accept as their local to succesfully negotiate a connection. However it is
- #two way: the other machine can do the same to you for its corresponding
- #'remote' IP. Hence mrtg-dynip can work on both machines.
- #Please note: If you have interface devices which register ppp10 or
- #above, your snmp daemon may not supply information. This is not due
- #to a bug in mrtg, the snmp modules or this mrtg-dynip.
- #Latest version of this software should be available from
- #http://www.heenan.ironbark.id.au/source/mrtg-dynip
- #The configuration herein is provivded as an example only.
- #This file is used to generate http://www.stats.syd.net.au.
- ######## Start of configuration section, numbered 0 to 16.
- ######## Set this, 0
- #Check the perl path is correct on the very first line!
- ######## Set this, 1
- #Define $WorkDir to be the directory for web pages and data to be housed
- #Ensure each directory path ends with a seperator. If intending to run on
- #an NT machine, then ensure the directory seperator is '\' instead of '/'
- $HTTP_Work_Dir='/var/lib/httpd/htdocs/mrtg/';
- ######## Set this, 2
- #Define name of index html file, only condition is that it not the same name
- #as a html that will be regenerated. All names of generated files contain
- #an IP address.
- $HTTP_index_file='index.html';
- ####### Set this, 3
- #Set to full directory path the mrtg executable is in. Place this file
- #it if that is where the Perl 5 snmp modules are and $use_internal_walk
- #will not be set to 1 (see below).
- #Ensure each directory path ends with a seperator. If intending to run on
- #an NT machine, then ensure the directory seperator is '\' instead of '/'
- $mrtg_Dir="/usr/src/mrtg/mrtg-2.5/";
- ####### Set this, 4
- #Set to full directory path the 'mrtg.cfg' file below is to be placed in.
- #The default choice is to choose same directory as for $mrtg_Dir above
- #Ensure each directory path ends with a seperator. If intending to run on
- #an NT machine, then ensure the directory seperator is '\' instead of '/'
- ###$mrtgcfg_Dir="/usr/src/mrtg/mrtg-2.5/";
- $mrtgcfg_Dir=$mrtg_Dir;
- ####### Set this, 5
- #Set the name you would like the 'mrtg.cfg' file to be. By locating or
- #naming differently from existing 'mrtg.cfg' files, you can run this
- #software independently of your existing mrtg installation.
- $mrtgcfg_file="mrtg-dynip.cfg";
- ####### Set this, 6
- #Set this to update interval in amount of minutes. Ensure when this file
- #is run from crond and that the cron run inteval matches this update
- #interval
- $update=5;
- ######## Set this, 7
- #Default community "public" may be sufficient. The community defined here
- #is the default community to use if no community is defined in the
- #for a particular interface in configuration of $interface in section 12.
- $community_default="public";
- ######## Set this, 8
- #Email address of network manager(s). Ensure a '' appears before
- #'@' in email address, as in example.
- #$email=""; #No attempt to display if null
- $email="admin@syd.net.au";
- ######## Set this, 9
- #Web address of home page for your system, do not include http:// at start
- #$home_page=""; #No attempt to display if null
- $home_page="www.syd.net.au";
- ######## Set this, 10
- #Text for clickable link to home page of your system
- #$home_page_descr=""; #No attempt to display if null
- $home_page_descr="SydNet Internet and Network Services";
- ######## Set this, 11
- #Set to a non zero if you want the program to die if there are problems
- #with responses from agents or hosts. Useful in testing phase.
- #$suicidal = 0; #Program is to soldier on if there are no responses from a host
- $suicidal = 1; #Program is to bomb out if there are problems with reponses
- ######## Set this, 12
- #Set this to a non zero if you have interfaces with the same IP number on
- #different masquerading firewall, or address translation, routers/hosts,
- #otherwise leave as 0. This adds the name of the host to all web page file
- #names as well as the IP addresses. Avoid using this option as its use make
- #it more difficult to keep track of interface data.
- #$firewall_masq_tran_if = 1;
- $firewall_masq_tran_if = 0;
- ######## Set this, 13
- #If you have hosts upon which you do not make it a requirement that an
- #interface device uses a partciular IP number (that is you might provide
- #fixed IP address use into a rotary modem pool) then you can set this option
- #on and set item 17 appropriately. Set to zero not to use, non zero to use
- $use_non_dyn_IP_for_tty=1;
- #$use_non_dyn_IP_for_tty=0;
- ######## Set this, 14
- #If you set option 13 above, then set to full directory path external
- #process will place a single line with the IP address into a file
- #with name that includes name of SNMP hsot and physical interface device
- #name.
- #
- #Ensure each directory path ends with a seperator. If intending to run on an
- #NT machine, then ensure the directory seperator is '\' instead of '/'
- $Dir_PID="/var/run/";
- ######## Set this, 15
- #If you haVe set option 13 above then you need to ensure
- #an external program provides required information from whatever
- #hosts you indicate in 16 are ports that can have their preferred
- #IP overridden.
- #
- #For UNIX style localhosts the following lines can be inserted in
- #/etc/ppp/ip-up and /etc/ppp/ipdown. Following a reboot stale
- #files should be removed automatically by startup, lest the machine
- #crashed. For hosts other than the host upon which this script is
- #running, ip-up and ip-down will need to be modified to ensure the
- #information goes to /var/run of appropriate host. This can be done
- #using remote shell or other mechanisms, such as remote copy, nfs,
- #auto processed email and special client/server networking.
- #
- #It is vital the 'host_name' for writing to /var/run/, as indicated in
- #/var/run/mrtg-dynip.host_name~~ttyXY, matches exactly the equivalent
- #host name in mrtg-dynip. This 'host_name' may be a single name,
- #a dotted name or a dotted numeric IP address.
- #
- #/etc/ppp/ip-up for a localhost running a bash shell can include
- #
- #tty_name="$2"
- #IP_remote="$5"
- #/bin/echo $IP_remote > /var/run/mrtg-dynip.localhost~~${tty_name##/*/}
- #
- #The name of the file must exactly matched that sought for.
- #
- #/etc/ppp/ip-down for a localhost running a bash shell can include
- #
- #tty_name=$2
- #/bin/rm -f /var/run/mrtg-dynip.localhost~~${tty_name##/*/}
- ######## Set this, 16
- #A pair of lines between blank lines represents an interface on a
- #particular host.
- #
- #You can comment out a single pair of lines with a '#' or any non digit
- #(except whitespace) as the first character of a pair of lines.
- #
- #The first line has the following format
- #'n' 'IP-addr' 'if-speed' 'snmp host' 'snmp community'
- #
- #The second line has the following format
- # 'Any free text description of interface'
- #
- #The items must not be enclosed by '"' or '''. Plese see example
- #below before reading any further. Any whitespace or combination
- #of whitespace (tabs or spaces) can seperate the items. However it
- #is important the two lines with 'END_OF_INTERFACES' end without
- #whitespace.
- #
- #'n' is place this entry is to appear in the index of interfaces web file.
- #The number of digits should be the same for each interface, for example
- #use sequence 000 010 020 for successive numbers. You can temporarily
- #take an interface out of consideration by placing any non digit
- #(except whitespace) before these digits, for example replace 010
- #by N010 or #010
- #
- #'IP-addr' is a consistent IP address of a physical interface. Exceptions
- #can be catered for. If you allow fixed (or static) IP into the physical
- #interface to override, then you can ensure the line is still marked active
- #in addition to the static IP entry being marked active. To ensure this
- #occurs, append '~~ttyXY' to the IP address where ttyXY is the value
- #returned by ${tty_name##/*/} for the phyical device (or port) as indicated
- #in section 15. To keep a value in place, even if the port is not part of
- #an IP overridable rotary pool, append a '~' to the end, such that complete
- #appendage to the IP address is now '~~ttyXY~'. You can keep the appendages
- #even if you turn off, or do nor use, $use_non_dyn_IP_for_tty.
- #
- #'if-speed' is the interface speed in integer bits/sec. K and M multipliers
- #for Kb/s and Mb/s can be used (see example). If you want to use decimal
- #values then rewrite with a lower multiplier, for example write
- #33.3K as 34099 (integer portion of 33.3 multiplied by 1024).
- #
- #'snmp host' is a common and consistent DNS name, or IP address, for
- #interfaces that belong to a particular machine. For efficiency of snmp
- #agent use it is better all interfaces that belong to a particular machine
- #use a consistent name.
- #
- #'snmp community' is the community name of the 'public' community
- #for an interface (the public community does not have to be named
- #'public'). This vale does not have to be set: if this value is
- #not set then the value of $community_default is used instead.
- #
- #'Any free text description of the interface ' on the second line
- #is as indicated. It need not begin with whitepace (tabs or spaces).
- #
- #For dynamic IP interfaces, you must use unvarying 'remote' IPs as indicated
- #above. Virtual interface devices should not be used, they provide the same
- #statistics as the real interface they are a virtual interface of.
- #The configuration herein is provivded as an example only.
- #This file is used to generate http://www.stats.syd.net.au.
- {
- $interfaces = <<END_OF_INTERFACES
- 010 139.130.36.136 64K 203.35.74.100
- SydNet - Telstra Internet link: 64K ISDN router interface connected 14 October 1997
- 020 203.35.74.101 10M localhost
- Ethernet interface on machine for permanent links and dial up lines
- 040 203.35.74.9~~ttyC9~ 33K localhost
- Permanent link for user pmw
- 050 203.35.74.120~~ttyC10~ 33K localhost
- Permanent link for machine chaosorb.syd.net.au
- 060 203.35.74.11~~ttyC11~ 33K localhost
- Permanent link for domain arty.com.au
- 073 203.35.74.108 33K localhost
- Static IP address for SydNet technical and sys admin staff member
- 076 203.35.74.107 33K localhost
- Static IP address for SydNet security staff member
- 079 203.35.74.105 33 localhost
- Static IP address for non permanent rotary dial in user foo
- 081 203.35.74.109 33K localhost
- Static IP address for non permanent rotary dial in user kebo
- 101 203.35.74.1~~ttyC1 33K localhost
- Rotary dial up line 1
- 102 203.35.74.2~~ttyC2 33K localhost
- Rotary dial up line 2
- 103 203.35.74.3~~ttyC3 33K localhost
- Rotary dial up line 3
- 104 203.35.74.4~~ttyC4 33K localhost
- Rotary dial up line 4
- 105 203.35.74.5~~ttyC5 33K localhost
- Rotary dial up line 5
- 106 203.35.74.6~~ttyC6 33K localhost
- Rotary dial up line 6
- 107 203.35.74.7~~ttyC7 33K localhost
- Rotary dial up line 7
- 108 203.35.74.8~~ttyC8 33K localhost
- Rotary dial up line 8
- 109 203.35.74.10~~ttyC0 33K localhost
- Rotary dial up line 9
- END_OF_INTERFACES
- }
- #Convenient record of tty to dynamic IP mappings on localhost
- #ttyC0 203.35.74.10
- #ttyC1 203.35.74.1
- #ttyC2 203.35.74.2
- #ttyC3 203.35.74.3
- #ttyC4 203.35.74.4
- #ttyC5 203.35.74.5
- #ttyC6 203.35.74.6
- #ttyC7 203.35.74.7
- #ttyC8 203.35.74.8
- #ttyC9~ 203.35.74.9
- #ttyC10~ 203.35.74.120
- #ttyC11~ 203.35.74.11
- #ttyC12 203.35.74.12
- #ttyC13 203.35.74.13
- #ttyC14 203.35.74.14
- #ttyC15 203.35.74.15
- ###### You have reached the end of the configuration section, there is no
- #need to make any adjustments below for normal operation.
- @lines = split(/n/,$interfaces);
- $line=0;
- while ($line <= $#lines)
- {
- @elements = split (" ",$lines[$line]);
- if (defined ($elements[3]))
- {
- $order=$elements[0];
- ($ip,$tty) = split (/~~/,$elements[1]);
- $speed = $elements[2];
- $snmp_host = $elements[3];
- $community = defined ($elements[4]) ? $elements[4] : $community_default;
- $descr=$lines[$line+1];
- $descr =~ s/^s*//;
- $ip_descr{$ip."@".$snmp_host} = [$order,$speed,$community,$descr];
- $snmp_comm_host{$community."@".$snmp_host}{$ip}=1;
- $dyn_port{$snmp_host."~~".$tty} = $ip if ($use_non_dyn_IP_for_tty && $tty && $tty !~ /~$/);
- $line=$line+2;
- }
- else
- {
- $line++;
- }
- }
- #Use Simon Leinen's Perl 5 snmp modules included with mrtg
- #consistent with manner Simon uses in examples
- {
- &snmp_get_response;
- }
- if ($use_non_dyn_IP_for_tty != 0)
- {
- foreach $tty (keys(%dyn_port))
- {
- if ( -e $Dir_PID."mrtg-dynip.".$tty )
- {
- ($snmp_host) = split (/~~/,$tty);
- if ( (defined($target{$dyn_port{$tty}."@".$snmp_host})) == 0)
- {
- $ip_active = `cat $Dir_PID"mrtg-dynip."$tty`;
- $ip_active =~ s/s+$//;
- if (defined ( $target{$ip_active."@".$snmp_host}))
- {
- $target{$dyn_port{$tty}."@".$snmp_host} = $target{$ip_active."@".$snmp_host};
- }
- }
- }
- }
- }
- open MRTGCFG, ">$mrtg_Dir"."$mrtgcfg_file"
- || die "$mrtg_Dir"."$mrtgcfg_file file could not be openedn";
- $ip_descr_ptr = %ip_descr;
- foreach $ip_i (keys(%target))
- {
- if ($$ip_descr_ptr{$ip_i}->[0] =~ /^d/)
- {
- ($speed_fig,$speed_mult) = $$ip_descr_ptr{$ip_i}->[1] =~ /^(d+)(D*)/;
- if ($speed_mult =~ /M|m/)
- {
- $scale = int ( $speed_fig * 1024 * 1024 / 8 );
- }
- elsif ($speed_mult =~ /K|k/)
- {
- $scale = int ( $speed_fig * 1024 / 8 );
- }
- elsif ( $speed_mult eq "" )
- {
- $scale = int ( $speed_fig / 8 );
- }
- else
- {
- die("Incorrect speed format in scaler constant $interfacesn");
- }
- ($ip_if,$host) = split (/@/,$ip_i);
- if ($firewall_masq_tran_if != 0)
- {
- $snmp_target=$ip_i;
- }
- else
- {
- $snmp_target=$ip_if;
- }
- print MRTGCFG <<END
- Target[$snmp_target]: $target{$ip_i}:$$ip_descr_ptr{$ip_i}->[2]@$host
- MaxBytes[$snmp_target]: $scale
- Title[$snmp_target]: Traffic Analysis through interface device with IP address $ip_if of host $host
- PageTop[$snmp_target]: <H1>Stats for interface device with description $$ip_descr_ptr{$ip_i}->[3]</H1>
- END
- }
- }
- {
- print MRTGCFG <<END
- WorkDir: $HTTP_Work_Dir
- END
- }
- close MRTGCFG;
- $interval = $update * 60;
- $expires = gmtime (time + $interval + 60);
- $now=&datestr(time);
- open MRTGCFGWEB, ">$HTTP_Work_Dir"."$HTTP_index_file"
- || die "Mrtg web index file could not be createdn";
- {
- print MRTGCFGWEB <<END
- <HTML><HEAD>
- <META HTTP-EQUIV="Refresh" CONTENT="$interval">
- <META HTTP-EQUIV="Expires" CONTENT="$expires GMT">
- <TITLE>Index of stats pages for interface devices on interfaces described below</TITLE>
- </HEAD>
- <BODY TEXT="#000000" BGCOLOR="#FFFFFF" LINK="#0000EE" VLINK="#551A8B" ALINK="#FF0000">
- <FONT FACE="Arial,Helvetica">
- <H1>Active and inactive interace device stats on interfaces described below</H1>
- This page last updated on $now<p>
- END
- }
- if ($home_page && $home_page_descr)
- {
- print MRTGCFGWEB <<END
- <p>
- A network management service courtesy of <a href="http://$home_page">
- $home_page_descr</a>
- <p>
- END
- }
- if ($email)
- {
- print MRTGCFGWEB <<END
- <p>
- Information and contact address: network management at email
- <a href="mailto:$email">$email</a>
- <p>
- END
- }
- {
- print MRTGCFGWEB <<END
- <p>
- Static IP address and rotary line both marked active if line
- in use by a static IP address
- <p>
- END
- }
- {
- print MRTGCFGWEB <<END
- </FONT>
- <table>
- END
- }
- foreach $ip_i (keys %ip_descr)
- {
- $ip_order{$$ip_descr_ptr{$ip_i}->[0]} = $ip_i if ($$ip_descr_ptr{$ip_i}->[0] =~ /^d/);
- }
- foreach $i (sort (keys %ip_order))
- {
- $ip_i = $ip_order{$i};
- if ($firewall_masq_tran_if != 0)
- {
- $file_name=$ip_i;
- }
- else
- {
- ($file_name) = split (/@/,$ip_i);
- }
- if ( defined ($target{$ip_i}) )
- {
- print MRTGCFGWEB <<END
- <tr><td><FONT FACE="Arial,Helvetica">ACTIVE</FONT></td> <td><FONT FACE="Arial,Helvetica"><A HREF="$file_name.html">$$ip_descr_ptr{$ip_i}->[3]</a></FONT></td></tr>
- END
- }
- else
- {
- print MRTGCFGWEB <<END
- <tr><td><FONT FACE="Arial,Helvetica">INACTIVE</FONT></td> <td><FONT FACE="Arial,Helvetica"><A HREF="$file_name.html">$$ip_descr_ptr{$ip_i}->[3]</a></td></FONT></tr>
- END
- }
- }
- {
- print MRTGCFGWEB <<END
- </table>
- <FONT FACE="Arial,Helvetica">
- <p> This web page (but not the web pages above)
- generated by mrtg-dynip, version 0.41b, 1997/10/25
- created by <br>John Heenan, <a
- href="mailto:john@heenan.ironbark.id.au">john@heenan.ironbark.id.au</a>
- <P>Mrtg-dynip is a contribution to MRTG, enabling MRTG to generate multi
- interface traffic graphs for IP interfaces on hosts that do not provide
- consistent SNMP target numbers for their interfaces. Such IP interfaces
- include IP active serial interfaces attached to modems in a PPP dial in
- environment. The hosts must run snmp agents. For completeness, information
- about interface devices with unvarying SNMP target numbers, such as
- ethernet cards, can be configured to be included.<P>
- Mrtg-dynip can be considred to have sophisticated modem bank monitoring
- capacity, when the modems carry PPP or SLIP traffic.<P>
- This web page and web pages above, auto update details, and refresh, every
- $update minutes.<p>
- Source code for the latest non beta version of the mrtg-dynip software
- contribution is available from <a
- href="http://www.heenan.ironbark.id.au/source/mrtg-dynip">
- http://www.heenan.ironbark.id.au/source/mrtg-dynip</a><p>
- END
- }
- print MRTGCFGWEB "</FONT></BODY></HTML>","n";
- close MRTGCFGWEB;
- exec ("$mrtg_Dir"."mrtg $mrtgcfg_Dir"."$mrtgcfg_file");
- sub datestr {
- ($time) = shift(@_) || return 0;
- ($wday) = ('Sunday','Monday','Tuesday','Wednesday',
- 'Thursday','Friday','Saturday')[(localtime($time))[6]];
- ($month) = ('January','February' ,'March' ,'April' ,
- 'May' , 'June' , 'July' , 'August' , 'September' ,
- 'October' ,
- 'November' , 'December' )[(localtime($time))[4]];
- ($mday,$year,$hour,$min) = (localtime($time))[3,5,2,1];
- if ($min<10) {$min = "0$min";}
- return "$wday, $mday $month ".($year+1900)." at $hour:$min";
- }
- sub snmp_get_response
- {
- use BER;
- use SNMP_Session;
- SOLDIER_ON: foreach $comm_host (keys (%snmp_comm_host))
- {
- ($community,$host) = split (/@/,$comm_host);
- if ($session = SNMP_Session->open ($host, $community, 161))
- {
- @ipRouteIfIndex = split ('.', '1.3.6.1.2.1.4.21.1.2');
- @ipAdEntIfIndex = split ('.', '1.3.6.1.2.1.4.20.1.2');
- $if_route_index_index = encode_oid (@ipRouteIfIndex);
- $if_index_index = encode_oid (@ipAdEntIfIndex);
- @oids = ($if_route_index_index);
- for (;;) {
- if ($session->getnext_request_response (@oids)) {
- $response = $session->pdu_buffer;
- ($bindings) = $session->decode_get_response ($response);
- @next_oids = ();
- ($binding,$bindings) = decode_sequence ($bindings);
- ($oid,$value) = decode_by_template ($binding, "%O%@");
- last unless BER::encoded_oid_prefix_p ($if_route_index_index, $oid);
- push @next_oids, $oid;
- ($ip_if) = pretty_print ($oid) =~ /.*.(d+.d+.d+.d+)$/;
- $target_i = pretty_print ($value);
- $target{$ip_if."@".$host} = $target_i if ( defined ($snmp_comm_host{$community."@".$host}{$ip_if}) );
- } else
- {
- die ("Suicide: no response from community $community on host $host","n") if ($suicidal != 0);
- print ("Soldiering on: no response from community $community on host $host","n");
- $session->close ();
- last SOLDIER_ON;
- }
- @oids = @next_oids;
- }
- @oids = ($if_index_index);
- for (;;) {
- if ($session->getnext_request_response (@oids)) {
- $response = $session->pdu_buffer;
- ($bindings) = $session->decode_get_response ($response);
- @next_oids = ();
- ($binding,$bindings) = decode_sequence ($bindings);
- ($oid,$value) = decode_by_template ($binding, "%O%@");
- last unless BER::encoded_oid_prefix_p ($if_index_index, $oid);
- push @next_oids, $oid;
- ($ip_if) = pretty_print ($oid) =~ /.*.(d+.d+.d+.d+)$/;
- $target_i = pretty_print ($value);
- $target{$ip_if."@".$host} = $target_i if ( defined ($snmp_comm_host{$community."@".$host}{$ip_if}) );
- } else
- {
- die ("Suicide: no response from community $community on host $host","n") if ($suicidal != 0);
- print ("Soldiering on: no response from community $community on host $host","n");
- $session->close ();
- last SOLDIER_ON;
- }
- @oids = @next_oids;
- }
- $session->close ();
- }
- else
- {
- die ("Suicide: unable to open SNMP session to community $community on host $host","n") if ($suicidal != 0);
- print ("Soldiering on: unable to open SNMP session to community $community on host $host","n");
- }
- }
- }