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+#
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+# $Id$
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+#
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+# iptel.org real world configuration
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+#
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+
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+# ----------- global configuration parameters ------------------------
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+
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+debug=3 # debug level (cmd line: -dddddddddd)
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+#fork=yes
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+fork=no
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+#log_stderror=no # (cmd line: -E)
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+log_stderror=yes # (cmd line: -E)
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+check_via=yes # (cmd. line: -v)
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+dns=on # (cmd. line: -r)
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+rev_dns=yes # (cmd. line: -R)
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+#port=5060
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+port=8060
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+children=1
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+
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+# advertise IP address in Via (as opposed to advertising DNS name
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+# which is annoying for downstream servers and some phones can
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+# not handle DNS at all)
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+listen=195.37.77.100
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+
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+# ------------------ module loading ----------------------------------
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+
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+loadmodule "../sip_router/modules/sl/sl.so"
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+loadmodule "../sip_router/modules/print/print.so"
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+loadmodule "../sip_router/modules/tm/tm.so"
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+loadmodule "../sip_router/modules/acc/acc.so"
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+loadmodule "../sip_router/modules/rr/rr.so"
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+loadmodule "../sip_router/modules/maxfwd/maxfwd.so"
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+loadmodule "../sip_router/modules/mysql/mysql.so"
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+loadmodule "../sip_router/modules/usrloc/usrloc.so"
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+loadmodule "../sip_router/modules/auth/auth.so"
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+loadmodule "../sip_router/modules/cpl/cpl.so"
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+
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+# ----------------- setting module-specific parameters ---------------
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+
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+# -- usrloc params --
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+
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+modparam("usrloc", "use_database", 1)
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+modparam("usrloc", "table", "location")
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+modparam("usrloc", "user_column", "user")
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+modparam("usrloc", "contact_column", "contact")
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+modparam("usrloc", "expires_column", "expires")
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+modparam("usrloc", "q_column", "q")
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+modparam("usrloc", "callid_column", "callid")
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+modparam("usrloc", "cseq_column", "cseq")
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+modparam("usrloc", "flush_interval", 60)
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+modparam("usrloc", "db_url", "sql://csps:47csps11@dbhost/csps107")
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+
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+# -- auth params --
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+
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+modparam("auth", "db_url", "sql://csps:47csps11@dbhost/csps107")
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+modparam("auth", "user_column", "user_id")
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+# nonce generation secret; particularly useful if multiple servers
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+# in a proxy farm are configured to authenticate
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+modparam("auth", "secret", "439tg8h349g8hq349t9384hg")
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+# calculate_ha1=false means password column includes ha1 strings;
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+# if it was false, plain-text passwords would be assumed
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+modparam("auth", "calculate_ha1", false)
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+modparam("auth", "nonce_expire", 300)
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+modparam("auth", "retry_count", 5)
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+# password_column, realm_column, group_table, group_user_column,
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+# group_group_column are set to their default values
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+# password_column_2 allows to deal with clients who put domain name
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+# in authentication credentials when calculate_ha1=false (if true,
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+# it works); if set to a value and USER_DOMAIN_HACK was enabled
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+# in defs.h, authentication will still work
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+
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+# -- acc params --
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+# report ACKs too for sake of completeness -- as we account PSTN
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+# destinations which are RR, ACKs should show up
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+modparam("acc", "report_ack", 1)
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+# don't bother me with early media reports (I don't like 183
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+# too much anyway...ever thought of timer C hitting after
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+# listening to music-on-hold for five minutes?)
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+modparam("acc", "early_media", 0)
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+modparam("acc", "log_level", 1)
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+# that is the flag for which we will account -- don't forget to
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+# set the same one :-)
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+modparam("acc", "acc_flag", 1 )
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+# we are interested only in succesful transactions
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+modparam("acc", "failed_transactions", 0 )
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+
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+# -- tm params --
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+modparam("tm", "fr_timer", 10 )
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+modparam("tm", "fr_inv_timer", 30 )
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+
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+# ------------------------- request routing logic -------------------
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+
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+# main routing logic
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+
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+route{
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+
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+ # filter local stateless ACK generated by authentication of mf replies
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+ sl_filter_ACK();
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+
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+ # filter too old messages
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+ log("Checking maxfwd\n");
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+ if (!mf_process_maxfwd_header("10")) {
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+ log("Too many hops\n");
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+ sl_send_reply("483","Too Many Hops");
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+ break;
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+ };
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+
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+ # Do strict routing if route headers present
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+ rewriteFromRoute();
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+
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+ # divert voicemail requests
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+ if (uri=~"mail\.iptel\.org" | uri=~":5066") {
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+ log("Request is for voicemail\n");
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+ sethost("iptel.org");
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+ t_relay_to("fox.iptel.org", "5066");
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+ break;
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+ };
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+
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+ # if this request is not for our domain, fall over to
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+ # outbound request processing; include gateway's address
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+ # in matching too -- we RR requests to it, so that
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+ # its address may show up in subsequent requests
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+ # after rewriteFromRoute
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+
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+ if (!(uri=~"[@:]iptel\.org([;:].*)*"
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+ | uri=~"[@:]195\.37\.77\.101([;:].*)*" |
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+ uri=~"@195\.37\.77\.110([;:].*)*" )) {
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+ route(2);
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+ };
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+ # here we continue with requests for our domain...
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+
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+ # various aliases (might use a database in future)
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+ if (uri=~"sip:9040@") {
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+ seturi("[email protected]");
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+ };
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+ if (uri=~"sip:17@") {
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+ seturi("sip:[email protected]");
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+ };
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+ # check again, if it is still for our domain after aliases
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+ if ( !(uri=~"[@:]iptel\.org([;:].*)*" |
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+ uri=~"[@:]195\.37\.77\.101([;:].*)*" |
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+ uri=~"@195\.37\.77\.110([;:].*)*" )) {
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+ route(2);
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+ };
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+ log("Request is for iptel.org\n");
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+
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+ # registers always MUST be authenticated to
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+ # avoid stealing incoming calls
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+ if (method=="REGISTER") {
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+ log("Request is REGISTER\n");
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+ if (!www_authorize( "iptel.org" /* realm */,
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+ "subscriber" /* table name */ )) {
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+ log("REGISTER has no credentials, sending challenge\n");
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+ www_challenge( "iptel.org" /* realm */,
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+ "0" /* no qop -- M$ can't deal with it */);
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+ break;
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+ };
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+ # prohibit attempts to grab someone else's To address
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+ # using valid credentials
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+ if (!check_to()) {
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+ log("To Cheating attempt\n");
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+ sl_send_reply("403", "That is ugly -- use To=id next time");
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+ break;
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+ };
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+
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+ # update Contact database
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+ log("REGISTER is authorized, saving location\n");
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+ save_contact("location");
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+ break;
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+ };
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+
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+ # now check if it's about PSTN destinations through our gateway;
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+ # note that 8.... is exempted for numerical destinations
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+ if (uri=~"sip:[0-79][0-9]*@.*") {
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+ route(3);
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+ };
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+
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+ # ---------- demo - begin --------------
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+ /* added by Bogdan for cpl demo - Dorgham request*/
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+ if (uri=~"sip:test@.*" && method=="INVITE")
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+ {
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+ log("SER : runing CPL!! :)\n");
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+ if ( !cpl_run_script() )
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+ {
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+ log("SER : Error during running CPL script!\n");
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+ }else{
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+ if ( cpl_is_response_reject() ) {
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+ log("SER: reject");
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+ sl_send_reply("603","I am not available!");
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+ break;
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+ }else if ( cpl_is_response_redirect() ) {
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+ log("SER : redirect\n");
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+ cpl_update_contact();
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+ sl_send_reply("302","Moved temporarily");
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+ break;
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+ };
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+ };
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+ };
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+ # -------------- demo - end -------------
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+
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+ # native SIP destinations are handled using our USRLOC DB
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+ if (!lookup_contact("location")) {
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+ log("Unable to lookup contact, sending 404\n");
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+ sl_send_reply("404", "Not Found");
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+ break;
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+ };
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+ # check whether some inventive user has uploaded gateway
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+ # contacts to UsrLoc to bypass our authorization logic
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+ if (uri=~"@195\.37\.77\.110([;:].*)*" ) {
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+ log("Weird! Gateway address in UsrLoc!\n");
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+ route(3);
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+ };
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+
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+ # requests from gateway should be RR-ed too
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+ if (src_ip==195.37.77.110 && method=="INVITE") {
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+ addRecordRoute();
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+ };
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+
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+ # we now know we may, we know where, let it go out now!
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+ t_relay();
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+}
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+
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+# routing logic for outbound requests targeted out of our domain
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+route[2] {
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+ # outbound requests are allowed only for our users -- we don't
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+ # support relaying and don't like strangers bothering us
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+ # with resolving DNS
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+ log("that's a request to outside");
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+ if (!(src_ip==195.37.77.110) &
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+ !(proxy_authorize( "iptel.org" /* realm */,
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+ "subscriber" /* table name */ ))) {
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+ # see comments bellow on these ACK/CANCEL exceptions
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+ if (method=="ACK" ) {
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+ log("failed outbound authentication for ACK granted");
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+ } else if (method=="CANCEL") {
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+ log("failed outbound authentication for ACK granted");
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+ } else proxy_challenge("iptel.org" /* realm */, "0" /* no-qop */);
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+ break;
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+ };
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+ # to maintain credibility of our proxy, we check From to be
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+ # equal of credential id -- all outbound request leaving our
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+ # proxy are guaranteed to be generated by persons in "From"
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+ if (!check_from()) {
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+ log("From Cheating attempt\n");
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+ sl_send_reply("403", "That is ugly -- use From=id next time");
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+ break;
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+ };
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+
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+ t_relay();
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+}
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+
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+# logic for calls through our PSTN gateway
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+route[3] {
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+ # free call destinations ... no authentication needed
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+ if (uri=~"sip:001795061546@.*" | uri=~"sip:0016097265544.*"
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+ | uri=~"sip:[79][0-9][0-9][0-9]@.*") {
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+ log("Free PSTN\n");
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+ } else {
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+ # all other PSTN destinations only for authenticated users
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+ # (Cisco GW, which has no digest support, is authenticated
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+ # by its IP address -- that's for sure not very strong;
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+ # wth confirmed that we filter packets coming from outside
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+ # and bearing SRC IP address of our network)
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+ if (!(src_ip==195.37.77.110) &
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+ !(proxy_authorize( "iptel.org" /* realm */,
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+ "subscriber" /* table name */))) {
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+ # we are forgiving and ignore improper credentials
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+ # for ACK/CANCEL as bis-09 is somewhat cryptic about
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+ # its use and many UACs have not gotten it right
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+ if (method=="ACK" ) {
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+ log("failed gw authentication for ACK granted");
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+ } else if (method=="CANCEL") {
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+ log("failed gw authentication for ACK granted");
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+ } else proxy_challenge( "iptel.org" /* realm */,
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+ "0" /* no qop */ );
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+ break;
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+ };
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+
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+ # authorize only for INVITEs -- RR/Contact may result in weird
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+ # things showing up in d-uri that would break our logic; our
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+ # major concern is INVITE which causes PSTN costs anyway
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+
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+ if (method=="INVITE") {
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+
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+ # does the authenticated user have a permission for local
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+ # calls? (i.e., is he in the "local" group?)
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+ if (uri=~"sip:0[1-9][0-9]+@.*") {
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+ if (!is_in_group("local")) {
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+ sl_send_reply("403", "Local Toodle Noodle...");
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+ break;
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+ };
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+ # the same for long-distance
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+ } else if (uri=~"sip:00[1-9][0-9]+@.*") {
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+ if (uri=~"sip:001[089]" | uri=~"sip:00900.*" ) {
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+ sl_send_reply("403", "Added Value Destinations not permitted...");
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+ break;
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+ };
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+ if (!is_in_group("ld")) {
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+ sl_send_reply("403", "LD Toodle Noodle...");
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+ break;
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+ };
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+ # the same for international calls
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+ } else if (uri=~"sip:000[1-9][0-9]+@.*") {
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+ if (!is_in_group("int")) {
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+ sl_send_reply("403", "International Toodle Noodle...");
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+ break;
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+ };
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+ # everything else (e.g., interplanetary calls) is denied
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+ } else {
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+ sl_send_reply("403", "interplanetary Toodle Noodle...");
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+ break;
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+ };
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+
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+ }; # INVITE to authorized PSTN
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+
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+ }; # authorized PSTN
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+
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+ # requests to gateway must be record-route because the GW accepts
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+ # only reqeusts coming from our proxy
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+ if (method=="INVITE")
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+ addRecordRoute();
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+
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+ # if you have passed through all the checks, let your call go to GW!
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+ rewritehostport("195.37.77.110:5060");
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+
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+ # tag this transaction for accounting
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+ setflag(1);
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+
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+ t_relay();
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+}
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Jiri Kuthan