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presence:pua-modules [2007/04/04 13:27] – 81.180.83.75presence:pua-modules [2009/06/21 21:53] (current) – Updated to show additional parameters required for fifo 210.48.96.100
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 +====== Presence User Agent Modules ======
  
 +It was designed with extensibility in mind, not to be tied to SIP or Kamailio (OpenSER) specific entities.
 +
 +At this moment, there are three modules:
 +
 +* [b]pua[/b] ([[http://www.kamailio.org/docs/modules/1.5.x/pua.html|see readme file]])- includes the common API for presence user agents, cannot be used standalone
 +* [b]pua_mi[/b] [[http://www.kamailio.org/docs/modules/1.5.x/pua_mi.html#id2496192|see readme file]])- enhance Kamailio (OpenSER) with the ability to publish presence information sent by external applications via management interface (MI - at this moment FIFO file and XMLRPC transports are available)
 +* [b]pua_usrloc[/b] [[http://www.kamailio.org/docs/modules/1.5.x/pua_usrloc.html|see readme file]])- enhance Kamailio (OpenSER) with the ability to publish presence information for records stored in user location table. Kamailio (OpenSER) can publish in behalf of phones which have no SIMPLE/Presence support information with online/offline status.
 +* [b]pua_xmpp[/b] ([[http://www.kamailio.org/docs/modules/1.5.x/pua_xmpp.html|see readme file]])- SIMPLE- XMPP gateway enhances presence information exchange between clients from SIP/SIMPLE and Jabber/XMPP clients -([[presence:pua_xmpp|see sample config file]]).
 +* [b]pua_bla[/b] ([[http://www.kamailio.org/docs/modules/1.5.x/pua_bla.html|see readme file]])-  implements Bridged Line Appearances according to the specifications in draft-anil-sipping-bla-03.txt -([[presence:pua_bla|see sample config file]]).
 +
 +
 +===== Publish Presence Information Via Management Interface =====
 +
 +There two new components involved, so small examples to get it started should make people attracted a bit and willing to test. Below is presented the config file and two shell scripts which are able to publish details from the operating system and from Kamailio (OpenSER) statistics.
 +
 +Beware that you have to create the tables required by [[http://www.kamailio.org/docs/modules/1.2.x/presence.html|presence]] and [[http://www.kamailio.org/docs/modules/1.2.x/pua.html|pua]] modules -- see README of those module for the SQL statements.
 +
 +==== Kamailio (OpenSER) Configuration file ====
 +
 +The configuration file is based on default config file which comes with Kamailio (OpenSER). It should allow to identify quickly the changes done to add presence capabilities.
 +
 +[color=brown]NOTE: the config file and shell scripts use 192.168.2.5 as SIP domain, you have to replace it with the value specific to you.[/color]
 +
 +<code c>
 +#
 +# simple quick-start config script + presence + pua usage
 +#
 +
 +# ----------- global configuration parameters ------------------------
 +
 +/* Uncomment these lines to enter debugging mode */ 
 +debug=3            # debug level (cmd line: -dddddddddd)
 +fork=yes
 +log_stderror=no
 +
 +check_via=no # (cmd. line: -v)
 +dns=no          # (cmd. line: -r)
 +rev_dns=no      # (cmd. line: -R)
 +listen=udp:192.168.2.5:5060
 +children=2
 +disable_tcp=yes
 +
 +#
 +# uncomment the following lines for TLS support
 +#disable_tls = 0
 +#listen = tls:your_IP:5061
 +#tls_verify_server = 1
 +#tls_verify_client = 1
 +#tls_require_client_certificate = 0
 +#tls_method = TLSv1
 +#tls_certificate = "/usr/local/etc/kamailio/tls/user/user-cert.pem"
 +#tls_private_key = "/usr/local/etc/kamailio/tls/user/user-privkey.pem"
 +#tls_ca_list = "/usr/local/etc/kamailio/tls/user/user-calist.pem"
 +
 +# ------------------ module loading ----------------------------------
 +mpath="/usr/local/kamailio/lib/modules/"
 +
 +loadmodule "db_mysql.so"
 +loadmodule "sl.so"
 +loadmodule "maxfwd.so"
 +loadmodule "textops.so"
 +loadmodule "tm.so"
 +loadmodule "rr.so"
 +loadmodule "presence.so"
 +loadmodule "avpops.so"
 +loadmodule "mi_fifo.so"
 +loadmodule "usrloc.so"
 +loadmodule "registrar.so"
 +loadmodule "pua.so"
 +loadmodule "pua_mi.so"
 +loadmodule "pua_usrloc.so"
 +
 +# Uncomment this if you want digest authentication
 +# mysql.so must be loaded !
 +#loadmodule "auth.so"
 +#loadmodule "auth_db.so"
 +
 +# ----------------- setting module-specific parameters ---------------
 +modparam("mi_fifo", "fifo_name", "/tmp/openser_fifo")
 +
 +# -- usrloc params --
 +# Uncomment this if you want to use SQL database 
 +# for persistent storage and comment the previous line
 +modparam("usrloc", "db_mode", 2)
 +
 +# -- auth params --
 +# Uncomment if you are using auth module
 +#
 +#modparam("auth_db", "calculate_ha1", yes)
 +#
 +# If you set "calculate_ha1" parameter to yes (which true in this config), 
 +# uncomment also the following parameter)
 +#
 +#modparam("auth_db", "password_column", "password")
 +
 +# -- rr params --
 +# add value to ;lr param to make some broken UAs happy
 +modparam("rr", "enable_full_lr", 1)
 +
 +modparam("pua_usrloc", "default_domain", "192.168.2.5")
 +
 +# -- presence params --
 +modparam("presence|^usrloc$|^pua$", "db_url",
 + "mysql://openser:openserrw@localhost/openser")
 +modparam("presence", "force_active", 1)
 +modparam("presence", "max_expires", 3600)
 +modparam("presence", "server_address", "sip:192.168.2.5:5060")
 +
 +# -------------------------  request routing logic -------------------
 +
 +# main routing logic
 +
 +route{
 +
 +
 + # initial sanity checks -- messages with
 + # max_forwards==0, or excessively long requests
 + if (!mf_process_maxfwd_header("10")) {
 + sl_send_reply("483","Too Many Hops");
 + exit;
 + };
 +
 + if (msg:len >=  2048 ) {
 + sl_send_reply("513", "Message too big");
 + exit;
 + };
 +
 + # we record-route all messages -- to make sure that
 + # subsequent messages will go through our proxy; that's
 + # particularly good if upstream and downstream entities
 + # use different transport protocol
 + if (!method=="REGISTER")
 + record_route();
 +
 + # subsequent messages withing a dialog should take the
 + # path determined by record-routing
 + if (loose_route()) {
 + # mark routing logic in request
 + append_hf("P-hint: rr-enforced\r\n"); 
 + route(1);
 + };
 + if(method == "INVITE")
 + setflag(5);
 +
 + #if (!uri==myself) {
 + # mark routing logic in request
 + # append_hf("P-hint: outbound\r\n"); 
 + # if you have some interdomain connections via TLS
 + #if(uri=~"@tls_domain1.net") {
 + # t_relay("tls:domain1.net");
 + # exit;
 + #} else if(uri=~"@tls_domain2.net") {
 + # t_relay("tls:domain2.net");
 + # exit;
 + #}
 + # route(1);
 + #};
 +
 + # if the request is for other domain use UsrLoc
 + # (in case, it does not work, use the following command
 + # with proper names and addresses in it)
 + if (uri==myself) {
 +
 + if( is_method("PUBLISH|SUBSCRIBE"))
 + route(2);
 +
 + if (method=="REGISTER") {
 +
 + # Uncomment this if you want to use digest authentication
 + #if (!www_authorize("openser.org", "subscriber")) {
 + # www_challenge("openser.org", "0");
 + # exit;
 + #};
 +
 + # make pua_usrloc send PUBLISH for phones which do not support presence
 + if(!search("^User-Agent: X-Lite"))
 + pua_set_publish();
 +
 + save("location");
 + exit;
 + };
 +
 + # native SIP destinations are handled using our USRLOC DB
 + if (!lookup("location")) {
 + sl_send_reply("404", "Not Found");
 + exit;
 + };
 + append_hf("P-hint: usrloc applied\r\n"); 
 + };
 +
 + route(1);
 +}
 +
 +
 +route[1] {
 + # send it out now; use stateful forwarding as it works reliably
 + # even for UDP2TCP
 + if (!t_relay()) {
 + sl_reply_error();
 + };
 + exit;
 +}
 +
 +route[2]
 +{
 + sl_send_reply("100","trying");
 + if (!t_newtran())
 + {
 + sl_reply_error();
 + exit;
 + };
 +
 + append_to_reply("Contact: <sip:192.168.2.5:5060>\r\n");
 + if(is_method("PUBLISH"))
 + {
 + handle_publish();
 + t_release();
 + } 
 + else 
 + if( is_method("SUBSCRIBE"))
 + {
 + handle_subscribe();
 + t_release();
 + }
 +
 + exit;
 +}
 +</code>
 +
 +==== Publish Details From System ====
 +
 +The following scrip makes usage of FIFO transport for Management Interface (MI) to publish details from the system:
 +* [b]U[/b] - logged in users
 +* [b]C[/b] - CPU in usage by system
 +* [b]M[/b] - free memory available
 +* [b]L[/b] - average load in system
 +
 +To see them, you have to subscribe to user [b]system[/b] of your VoIP platform.
 +
 +The [b]kamailio-publish-system.sh[/b] script:
 +
 +<code>
 +#!/bin/bash
 +# buld a FIFO command to PUBLISH number of users, load, system CPU usage
 +#   and freem memory in the system
 +#
 +
 +#config values
 +OP_SYSUSER="system@192.168.2.5"
 +OP_SIPURI="sip:$OP_SYSUSER"
 +OP_EXPIRES="124"
 +
 +# load values
 +top -n1 | head -n 4 >/tmp/top-head.txt
 +OP_USERS=`cat /tmp/top-head.txt| head -1 | awk '{print $6}'`
 +OP_LOAD=`cat /tmp/top-head.txt| head -1 | awk '{print $10 $11 $12+0}'`
 +OP_SCPU=`cat /tmp/top-head.txt| grep "^Cpu" | awk '{print substr($3,0,index($3,"%"))}'`
 +OP_FMEM=`cat /tmp/top-head.txt| grep "^Mem" | awk '{print $7}'`
 +
 +#build reply fifo file
 +rm -f /tmp/kamailio_fifo_reply
 +mkfifo /tmp/kamailio_fifo_reply
 +cat /tmp/kamailio_fifo_reply&
 +
 +cat >/tmp/kamailio_fifo <<EOF
 +:pua_publish:kamailio_fifo_reply
 +$OP_SIPURI
 +$OP_EXPIRES
 +presence
 +application/pidf+xml
 +.
 +.
 +<?xml version='1.0'?><presence xmlns='urn:ietf:params:xml:ns:pidf' xmlns:dm='urn:ietf:params:xml:ns:pidf:data-model' xmlns:rpid='urn:ietf:params:xml:ns:pidf:rpid' xmlns:c='urn:ietf:params:xml:ns:pidf:cipid' entity='$OP_SYSUSER'><tuple id='0x81935a0'><status><basic>open</basic></status></tuple><dm:person id='mi7d748945'><dm:note>U:$OP_USERS/C:$OP_SCPU/M:$OP_FMEM/L:$OP_LOAD</dm:note></dm:person></presence>
 +
 +EOF
 +
 +</code>
 +
 +==== Publish Details From Kamailio (OpenSER) Statistics ====
 +
 +The following scrip makes usage of FIFO transport for Management Interface (MI) to publish details from Kamailio (OpenSER) statistics:
 +* [b]U[/b] - user location records 
 +* [b]T[/b] - active transactions
 +* [b]R[/b] - processed SIP requests
 +
 +To see them, you have to subscribe to user [b]system[/b] of your VoIP platform.
 +
 +The [b]kamailio-publish-stats.sh[/b] script:
 +
 +<code>
 +#!/bin/bash
 +# buld a FIFO command to PUBLISH number of users, load, system CPU usage
 +#   and freem memory in the system
 +#
 +
 +#config values
 +OP_SYSUSER="system@192.168.2.5"
 +OP_SIPURI="sip:$OP_SYSUSER"
 +OP_EXPIRES="124"
 +OSERCTL="/usr/local/kamailio/sbin/kamctl"
 +
 +# load values
 +$OSERCTL  fifo get_statistics all>/tmp/oser-stats.txt
 +OP_REQS=`cat /tmp/oser-stats.txt| grep "core:rcv_requests" | awk '{print $3}'`
 +OP_TRANS=`cat /tmp/oser-stats.txt| grep "tm:inuse_transactions" | awk '{print $3}'`
 +OP_URECS=`cat /tmp/oser-stats.txt| grep "usrloc:location-users" | awk '{print $3}'`
 +
 +#build reply fifo file
 +rm -f /tmp/kamailio_fifo_reply
 +mkfifo /tmp/kamailio_fifo_reply
 +cat /tmp/kamailio_fifo_reply&
 +
 +cat >/tmp/kamailio_fifo <<EOF
 +:pua_publish:kamailio_fifo_reply
 +$OP_SIPURI
 +$OP_EXPIRES
 +presence
 +application/pidf+xml
 +.
 +.
 +<?xml version='1.0'?><presence xmlns='urn:ietf:params:xml:ns:pidf' xmlns:dm='urn:ietf:params:xml:ns:pidf:data-model' xmlns:rpid='urn:ietf:params:xml:ns:pidf:rpid' xmlns:c='urn:ietf:params:xml:ns:pidf:cipid' entity='$OP_SYSUSER'><tuple id='0x81935a0'><status><basic>open</basic></status></tuple><dm:person id='mi7d748945'><dm:note>U:$OP_URECS/T:$OP_TRANS/R:$OP_REQS</dm:note></dm:person></presence>
 +
 +EOF
 +
 +</code>
 +
 +
 +
 +==== Using With X-Lite 3.0 ====
 +
 +Below are links to two screenshots of using X-Lite to view published information by the two scripts above:
 +
 +[[http://www.kamailio.org/downloads/presence/xlite-openser-system.jpg|X-Lite Subscribed to System Details]]
 +
 +{{http://www.kamailio.org/downloads/presence/xlite-openser-system.jpg}}
 +
 +[[http://www.kamailio.org/downloads/presence/xlite-openser-stats.jpg|X-Lite Subscribed to Statistics Details]]
 +
 +{{http://www.kamailio.org/downloads/presence/xlite-openser-stats.jpg}}
 +
 +
 +
 +===== Download Files =====
 +
 +Config file and shell scripts can be downloaded from [[http://www.kamailio.org/downloads/presence/]].
 +
 +===== Presence-Related Stuff =====
 +
 +{{indexmenu>presence|js}}

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