script for integrated IM and SMS gateway introduced

etc/im_gw.cfg

@@ -0,0 +1,167 @@
+### ----- IM Gateway [SMS+Jabber] config file for 'bat.iptel.org' ----  
+
+# ----------- global configuration parameters ------------------------
+
+debug=9          # debug level (cmd line: -dddddddddd)
+#fork=yes
+#fork=no
+#log_stderror=no     # (cmd line: -E)
+log_stderror=yes   # (cmd line: -E)
+check_via=yes       # (cmd. line: -v)
+dns=on              # (cmd. line: -r)
+rev_dns=yes         # (cmd. line: -R)
+port=5070
+children=2
+
+# advertise IP address in Via (as opposed to advertising DNS name
+# which is annoying for downstream servers and some phones can
+# not handle DNS at all)
+listen=195.37.77.100
+
+# ------------------ module loading ----------------------------------
+
+loadmodule "../sip_router/modules/sl/sl.so"
+loadmodule "../sip_router/modules/print/print.so"
+loadmodule "../sip_router/modules/tm/tm_mod.so"
+loadmodule "../sip_router/modules/maxfwd/maxfwd.so"
+loadmodule "../sip_router/modules/sms/sms.so"
+loadmodule "../sip_router/modules/textops/textops.so"
+loadmodule "../sip_router/modules/mysql/mysql.so"
+loadmodule "../sip_router/modules/jabber/jabber.so"
+loadmodule "../sip_router/modules/pike/pike.so"
+
+# ----------------- setting module-specific parameters ---------------
+
+# -- sms params --
+modparam("sms","modems","Falcom [d=/dev/ttyS0;b=9600;p=9254;m=new;l=10;r=2]")
+modparam("sms","networks","D1[c=491710765000;m=10]")
+modparam("sms","links","Falcom[D1]")
+modparam("sms","domain","iptel.org")
+modparam("sms","max_sms_parts",3)
+modparam("sms","use_contact",1)
+
+# -- tm params --
+modparam("tm", "fr_timer", 10 )
+modparam("tm", "fr_inv_timer", 10 )
+modparam("tm", "wt_timer", 10 )
+
+# -- pike params --
+# no more than minimum 5 or maximum 5*3 msg per 10 secs - only for sms
+modparam("pike","sampling_time_unit",60)
+modparam("pike","reqs_density_per_unit",5)
+modparam("pike","removel_latency",30)
+
+# -- jabber params --
+modparam("jabber","db_url","sql://s2jgw:[email protected]/sip_jab")
+modparam("jabber","jaddress","bat.iptel.org")
+modparam("jabber","jport",5222)
+modparam("jabber","workers",2)
+modparam("jabber","max_jobs",10)
+modparam("jabber","delay_time",17)
+modparam("jabber","cache_time",1800)
+
+# -------------------------  request routing logic -------------------
+
+# main routing logic
+
+route{
+
+	# filter too old messages
+	log("LOG: Checking maxfwd\n");
+	if (!mf_process_maxfwd_header("10")) {
+		log("LOG: Too many hops\n");
+		sl_send_reply("483","Too Many Hops");
+		break;
+	};
+
+	# messages too large are denied
+	if (len_gt( max_len )) {
+		sl_send_reply("513", "Riesengross -- Message too large");
+		break;
+	};
+ 
+	# accept only req coming from iptel.org
+	if (!src_ip==195.37.77.101 |
+	!( uri=~"iptel.org" | uri=~"195\.37\.77\.100" ))
+	{
+		sl_send_reply("403","Forbidden");
+		log("SER:Forbidden request: wrong src_ip or req_uri\n");
+		break;
+	};
+
+	# we are not interested in non-MESSAGE requests
+	if (!method=="MESSAGE")
+	{
+		sl_send_reply("501","Not Implemented");
+		break;
+	};
+
+	# error occured ...
+	if (! t_newtran())
+	{
+		sl_reply_error();
+		break;
+	};
+
+	# do what you want to do -  first, it's for SMS or JABBER ?
+	if ( search("To:.*@icq\.iptel\.org")
+			| search("To:.*@msn\.iptel\.org")
+			| search("To:.*@aim\.iptel\.org")
+			| search("To:.*@yahoo\.iptel\.org") )
+	{
+		### ----- JABBER GATEWAY ------
+		log("MESSAGE received -> sending as JABBER\n");
+		if (jab_send_message())
+		{
+			if (!t_reply("202","Accepted"))
+			{
+				# if replying failed, retry statelessly
+				sl_reply_error();
+			};
+		}else{
+			if (!t_reply("502","Bad gateway - IM error"))
+			{
+				# if replying failed, retry statelessly
+				sl_reply_error();
+			};
+		};
+		break; # End of Jabber
+	};
+
+	### ------ SMS GATEWAY --------
+	# let's block ips that send a lot of request!!
+	if (!pike_check_req() )
+	{
+		break;
+	};
+	# SMS expects only the numbers as follows +<int> <area> <nr>
+	if (!(uri=~"sip:+[^0][0-9]{3}"))
+	{
+		log("SER: invalid number format!!\n");
+		if (!t_reply("502","Bad gateway - invalid number"))
+		{
+			# if replying failed, retry statelessly
+			sl_reply_error();
+		};
+		break;
+	};
+	if (sms_send_msg_to_net("D1"))
+	{
+		# for sending replies, we woun't use the statefull
+		# function because it is not able to add the Contact
+		# header (in fact to add any rpl_lump :-( )
+		# things went well, send ok upstream
+		if (!t_reply("202", "yes sir, SMS sent over"))
+		{
+			# if replying failed, retry statelessly
+			sl_reply_error();
+		};
+	} else {
+		if (!t_reply("502", "Bad gateway - SMS error"))
+		{
+			# if replying failed, retry statelessly
+			sl_reply_error();
+		};
+		break;
+	};
+}