ims_registrar_pcscf: support for handling contact * value

[deepak-git-account]

Description

 If Deregistration contains * in a contact field as described in RFC-3261,
 then the Kamailio is not cleaning the in-memory and database record. And the next iteration is not working correctly. 
 Use of the "*" Contact header field value allows a registering UA
  to remove all bindings associated with an address-of-record
  without knowing their precise values.

Step:1 REGISTER USER UE-A
Step:2: Wait for the certain duration
Step:3: De-REGISTER USER UE-A (Contact header is using *)
Step:4: Repeat from the step-1
After step:3, clean-up is not happening. Record can be seen in SQL.

Note: If de-register contains specific CONTACT header, then cleanup is happening.

Troubleshooting

Reproduction

Debugging Data

(paste your debugging data here)

Log Messages

May 13 19:47:22 openims-tvmcfg-node-focal pcscf/pcscf[35816]: DEBUG: <script>: Contact headervalue: *
May 13 19:47:22 openims-tvmcfg-node-focal pcscf/pcscf[35816]: ERROR: *** cfgtrace:dbg_cfg_trace(): request_route=[REGISTER] c=[/usr/local/etc/kamailio/pcscf/route/register.cfg] l=25 a=63 n=assign
May 13 19:47:22 openims-tvmcfg-node-focal pcscf/pcscf[35816]: ERROR: *** cfgtrace:dbg_cfg_trace(): request_route=[REGISTER] c=[/usr/local/etc/kamailio/pcscf/route/register.cfg] l=26 a=26 n=xlog
May 13 19:47:22 openims-tvmcfg-node-focal pcscf/pcscf[35816]: DEBUG: <script>: Full URI from sip:49404965200004@open-ims.test: sip:49404965200004@open-ims.test
May 13 19:47:22 openims-tvmcfg-node-focal pcscf/pcscf[35816]: ERROR: *** cfgtrace:dbg_cfg_trace(): request_route=[REGISTER] c=[/usr/local/etc/kamailio/pcscf/route/register.cfg] l=33 a=63 n=assign
May 13 19:47:22 openims-tvmcfg-node-focal pcscf/pcscf[35816]: ERROR: *** cfgtrace:dbg_cfg_trace(): request_route=[REGISTER] c=[/usr/local/etc/kamailio/pcscf/route/register.cfg] l=34 a=63 n=assign
May 13 19:47:22 openims-tvmcfg-node-focal pcscf/pcscf[35816]: ERROR: *** cfgtrace:dbg_cfg_trace(): request_route=[REGISTER] c=[/usr/local/etc/kamailio/pcscf/route/register.cfg] l=36 a=63 n=assign
May 13 19:47:22 openims-tvmcfg-node-focal pcscf/pcscf[35816]: ERROR: *** cfgtrace:dbg_cfg_trace(): request_route=[REGISTER] c=[/usr/local/etc/kamailio/pcscf/route/register.cfg] l=37 a=26 n=xlog
May 13 19:47:22 openims-tvmcfg-node-focal pcscf/pcscf[35816]: ERROR: *** cfgtrace:dbg_cfg_trace(): request_route=[REGISTER] c=[/usr/local/etc/kamailio/pcscf/route/register.cfg] l=38 a=63 n=assign
May 13 19:47:22 openims-tvmcfg-node-focal pcscf/pcscf[35816]: ERROR: *** cfgtrace:dbg_cfg_trace(): request_route=[REGISTER] c=[/usr/local/etc/kamailio/pcscf/route/register.cfg] l=39 a=26 n=xlog
May 13 19:47:22 openims-tvmcfg-node-focal pcscf/pcscf[35816]: ERROR: *** cfgtrace:dbg_cfg_trace(): request_route=[REGISTER] c=[/usr/local/etc/kamailio/pcscf/route/register.cfg] l=46 a=16 n=if
May 13 19:47:22 openims-tvmcfg-node-focal pcscf/pcscf[35816]: ERROR: *** cfgtrace:dbg_cfg_trace(): request_route=[REGISTER] c=[/usr/local/etc/kamailio/pcscf/route/register.cfg] l=43 a=26 n=xlog
May 13 19:47:22 openims-tvmcfg-node-focal pcscf/pcscf[35816]: ERROR: *** cfgtrace:dbg_cfg_trace(): request_route=[REGISTER] c=[/usr/local/etc/kamailio/pcscf/route/register.cfg] l=54 a=16 n=if
May 13 19:47:22 openims-tvmcfg-node-focal pcscf/pcscf[35816]: ERROR: *** cfgtrace:dbg_cfg_trace(): request_route=[REGISTER] c=[/usr/local/etc/kamailio/pcscf/route/register.cfg] l=46 a=25 n=is_present_hf
May 13 19:47:22 openims-tvmcfg-node-focal pcscf/pcscf[35816]: ERROR: *** cfgtrace:dbg_cfg_trace(): request_route=[REGISTER] c=[/usr/local/etc/kamailio/pcscf/route/register.cfg] l=47 a=26 n=xlog
May 13 19:47:22 openims-tvmcfg-node-focal pcscf/pcscf[35816]: ERROR: *** cfgtrace:dbg_cfg_trace(): request_route=[REGISTER] c=[/usr/local/etc/kamailio/pcscf/route/register.cfg] l=50 a=25 n=append_hf
May 13 19:47:22 openims-tvmcfg-node-focal pcscf/pcscf[35816]: ERROR: *** cfgtrace:dbg_cfg_trace(): request_route=[REGISTER] c=[/usr/local/etc/kamailio/pcscf/route/register.cfg] l=54 a=26 n=xlog
May 13 19:47:22 openims-tvmcfg-node-focal pcscf/pcscf[35816]: ERROR: *** cfgtrace:dbg_cfg_trace(): request_route=[REGISTER] c=[/usr/local/etc/kamailio/pcscf/route/register.cfg] l=55 a=25 n=pcscf_save_pending
May 13 19:47:22 openims-tvmcfg-node-focal pcscf/pcscf[35816]: ERROR: ims_registrar_pcscf [save.c:318]: save_pending(): No contact headers
May 13 19:47:22 openims-tvmcfg-node-focal pcscf/pcscf[35816]: DEBUG: ims_registrar_pcscf [save.c:492]: save_pending(): Error saving pending contact
May 13 19:47:22 openims-tvmcfg-node-focal pcscf/pcscf[35816]: ERROR: *** cfgtrace:dbg_cfg_trace(): request_route=[REGISTER] c=[/usr/local/etc/kamailio/pcscf/route/register.cfg] l=67 a=16 n=if
May 13 19:47:22 openims-tvmcfg-node-focal pcscf/pcscf[35816]: ERROR: *** cfgtrace:dbg_cfg_trace(): request_route=[REGISTER] c=[/usr/local/etc/kamailio/pcscf/route/register.cfg] l=65 a=63 n=assign
May 13 19:47:22 openims-tvmcfg-node-focal pcscf/pcscf[35816]: ERROR: *** cfgtrace:dbg_cfg_trace(): request_route=[] c=[] l=0 a=12 n=seturi
May 13 19:47:22 openims-tvmcfg-node-focal pcscf/pcscf[35816]: ERROR: *** cfgtrace:dbg_cfg_trace(): request_route=[REGISTER] c=[/usr/local/etc/kamailio/pcscf/route/register.cfg] l=71 a=26 n=xlog

SIP Traffic

(paste your sip traffic here)

Possible Solutions

Additional Information

• Kamailio Version - output of kamailio -v

kamailio -v
version: kamailio 5.7.5 (x86_64/linux) 58499a-dirty
flags: USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MMAP, PKG_MALLOC, MEM_JOIN_FREE, Q_MALLOC, F_MALLOC, TLSF_MALLOC, DBG_SR_MEMORY, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT, USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLOCKLIST, HAVE_RESOLV_RES, TLS_PTHREAD_MUTEX_SHARED
ADAPTIVE_WAIT_LOOPS 1024, MAX_RECV_BUFFER_SIZE 262144, MAX_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB
poll method support: poll, epoll_lt, epoll_et, sigio_rt, select.
id: 58499a -dirty
compiled on 11:23:55 May  8 2024 with gcc 9.4.0

• Operating System:

lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 20.04.6 LTS
Release:        20.04
Codename:       focal

[xkaraman]

Hey there @deepak-git-account ,

The RFC also states that

The REGISTER-specific Contact header field value of "*" applies to all registrations, but it MUST NOT be used unless the Expires header field is present with a value of "0".

If you set the Expires header to 0, all all bindings associated with an address-of-record should be gone.

Contact: *
Expires: 0

[deepak-git-account]

Thanks for the reply.. Both are set to Contact: * and Expires: 0. But Kamailio PCSCF is giving error:
May 13 19:47:22 openims-tvmcfg-node-focal pcscf/pcscf[35816]: ERROR: ims_registrar_pcscf [save.c:318]: save_pending(): No contact headers

[xkaraman]

@deepak-git-account
save_pending() does not seem to handle de-registrations according to function code

kamailio/src/modules/ims_registrar_pcscf/save.c

Line 354 in 8363208

LM_DBG("not doing pending reg on de-registration\n");

.

Can you maybe use the save() function? It needs to be called from onreply_route though. It should handle the *.

kamailio/src/modules/ims_registrar_pcscf/save.c

Line 566 in 8363208

if(!update_contacts(req, _m, _d, cb->star, expires_hdr, public_ids,

[miconda]

I understand that this is about the ims modules, not about registrar/usrloc modules for the classic SIP.

The IMS modules are not full implementation of the specs, and given that not many are contributing to them, likely this is a missing feature.

One should write the code for it and make a pull request. I changed the title accordingly and if nobody commits to do it soon, this issue will be closed.