UAC Module
Ramona-Elena Modroiu
<ramona@rosdev.ro>
Daniel-Constantin Mierla
<miconda@gmail.com>
Edited by
Ramona-Elena Modroiu
<ramona@rosdev.ro>
Copyright © 2009-2010 asipto.com
Copyright © 2005 Voice Sistem
__________________________________________________________________
Table of Contents
1. Admin Guide
1. Overview
2. Dependencies
2.1. Kamailio Modules
2.2. External Libraries or Applications
3. Parameters
3.1. rr_from_store_param (string)
3.2. rr_to_store_param (string)
3.3. restore_mode (string)
3.4. restore_dlg (int)
3.5. restore_passwd (string)
3.6. restore_from_avp (string)
3.7. restore_to_avp (string)
3.8. credential (string)
3.9. auth_realm_avp (string)
3.10. auth_username_avp (string)
3.11. auth_password_avp (string)
3.12. reg_db_url (string)
3.13. reg_timer_interval (int)
3.14. reg_retry_interval (int)
3.15. reg_random_delay (int)
3.16. reg_db_table (string)
3.17. reg_contact_addr (string)
3.18. reg_keep_callid (int)
3.19. reg_active (int)
3.20. reg_gc_interval (int)
4. Functions
4.1. uac_replace_from(display,uri)
4.2. uac_replace_from(uri)
4.3. uac_restore_from()
4.4. uac_replace_to(display,uri)
4.5. uac_replace_to(uri)
4.6. uac_restore_to()
4.7. uac_auth()
4.8. uac_req_send()
4.9. uac_reg_lookup(uuid, dst)
4.10. uac_reg_status(uuid)
4.11. uac_reg_request_to(user, mode)
4.12. uac_reg_enable(attr, val)
4.13. uac_reg_disable(attr, val)
4.14. uac_reg_refresh(luuid)
5. Pseudo Variables
6. Event Routes
6.1. event_route[uac:reply]
7. Counters
8. RPC Commands
8.1. uac.reg_dump
8.2. uac.reg_info
8.3. uac.reg_enable
8.4. uac.reg_disable
8.5. uac.reg_reload
8.6. uac.reg_refresh
8.7. uac.reg_active
9. Remote Registration
List of Examples
1.1. Set rr_from_store_param parameter
1.2. Set rr_to_store_param parameter
1.3. Set restore_mode parameter
1.4. Set restore_dlg parameter
1.5. Set restore_passwd parameter
1.6. Set restore_from_avp parameter
1.7. Set restore_to_avp parameter
1.8. Set credential parameter
1.9. Set auth_realm_avp parameter
1.10. Set auth_username_avp parameter
1.11. Set auth_password_avp parameter
1.12. Set reg_db_url parameter
1.13. Set reg_timer_interval parameter
1.14. Set reg_retry_interval parameter
1.15. Set reg_random_delay parameter
1.16. Set reg_db_table parameter
1.17. Set reg_contact_addr parameter
1.18. Set reg_keep_callid parameter
1.19. Set reg_active parameter
1.20. Set reg_gc_interval parameter
1.21. uac_replace_from usage
1.22. uac_replace_from usage
1.23. uac_restore_from usage
1.24. uac_replace_to usage
1.25. uac_replace_to usage
1.26. uac_restore_to usage
1.27. uac_auth usage
1.28. uac_req_send usage
1.29. uac_reg_lookup usage
1.30. uac_reg_status usage
1.31. uac_reg_request_to usage
1.32. uac_reg_enable usage
1.33. uac_reg_disable usage
1.34. uac_reg_refresh usage
1.35. event_route[uac:reply] usage
1.36. uac.reg_dump usage
1.37. uac.reg_info usage
1.38. uac.reg_enable usage
1.39. uac.reg_disable usage
1.40. uac.reg_reload usage
1.41. uac.reg_refresh usage
1.42. uac.reg_active usage
1.43. lookup remote registrations usage
Chapter 1. Admin Guide
Table of Contents
1. Overview
2. Dependencies
2.1. Kamailio Modules
2.2. External Libraries or Applications
3. Parameters
3.1. rr_from_store_param (string)
3.2. rr_to_store_param (string)
3.3. restore_mode (string)
3.4. restore_dlg (int)
3.5. restore_passwd (string)
3.6. restore_from_avp (string)
3.7. restore_to_avp (string)
3.8. credential (string)
3.9. auth_realm_avp (string)
3.10. auth_username_avp (string)
3.11. auth_password_avp (string)
3.12. reg_db_url (string)
3.13. reg_timer_interval (int)
3.14. reg_retry_interval (int)
3.15. reg_random_delay (int)
3.16. reg_db_table (string)
3.17. reg_contact_addr (string)
3.18. reg_keep_callid (int)
3.19. reg_active (int)
3.20. reg_gc_interval (int)
4. Functions
4.1. uac_replace_from(display,uri)
4.2. uac_replace_from(uri)
4.3. uac_restore_from()
4.4. uac_replace_to(display,uri)
4.5. uac_replace_to(uri)
4.6. uac_restore_to()
4.7. uac_auth()
4.8. uac_req_send()
4.9. uac_reg_lookup(uuid, dst)
4.10. uac_reg_status(uuid)
4.11. uac_reg_request_to(user, mode)
4.12. uac_reg_enable(attr, val)
4.13. uac_reg_disable(attr, val)
4.14. uac_reg_refresh(luuid)
5. Pseudo Variables
6. Event Routes
6.1. event_route[uac:reply]
7. Counters
8. RPC Commands
8.1. uac.reg_dump
8.2. uac.reg_info
8.3. uac.reg_enable
8.4. uac.reg_disable
8.5. uac.reg_reload
8.6. uac.reg_refresh
8.7. uac.reg_active
9. Remote Registration
1. Overview
The UAC (User Agent Client) module provides some basic UAC
functionalities like sending SIP requests, registering with a remote
service, From: header manipulation (anonymization) and client
authentication.
The UAC module also supports sending a SIP request from the
configuration file. See variable $uac_req(name) and the function
uac_req_send().
In addition, the module supports database-driven SIP registration
functionality. See the uac_reg_lookup() function and dedicated section
for remote registration configuration.
Known limitations in this version:
* Authentication does not support qop auth-int, just qop auth;
* CSeq is not increased automatically by uac_auth() during
authentication - the follow up request may be rejected. CSeq can be
increased when authenticating INVITE requests - dialog module has
to be used, with CSeq tracking feature enabled (see the readme of
dialog module).
* The “uac_replace_*” functions can only be run once on the same SIP
request. Try to save needed changes in a pseudovariable and apply
them once.
There is also a limitation regarding the use of the
“msg_apply_changes()” function together with the “uac_replace_*”
functions for messages that are loose-routed (e.g. Re-INVITE
requests). In this case you need to call the “loose_route()”
function after the replace and msg_apply_changes. Otherwise
Kamailio can create replies with wrong From/To headers (e.g. for
the 100 - Trying reply in the Re-INVITE example).
2. Dependencies
2.1. Kamailio Modules
2.2. External Libraries or Applications
2.1. Kamailio Modules
The following modules must be loaded before this module:
* TM - Transaction Module
* RR - Record-Route Module, but only if restore mode for From: URI is
set to “auto”.
* Dialog Module, but only if restore mode for From: URI is set to
“auto” and you want uac_replace_from or uac_replace_to to store the
values of the URIs as dialog variables.
2.2. External Libraries or Applications
The following libraries or applications must be installed before
running Kamailio with this module loaded:
* None
3. Parameters
3.1. rr_from_store_param (string)
3.2. rr_to_store_param (string)
3.3. restore_mode (string)
3.4. restore_dlg (int)
3.5. restore_passwd (string)
3.6. restore_from_avp (string)
3.7. restore_to_avp (string)
3.8. credential (string)
3.9. auth_realm_avp (string)
3.10. auth_username_avp (string)
3.11. auth_password_avp (string)
3.12. reg_db_url (string)
3.13. reg_timer_interval (int)
3.14. reg_retry_interval (int)
3.15. reg_random_delay (int)
3.16. reg_db_table (string)
3.17. reg_contact_addr (string)
3.18. reg_keep_callid (int)
3.19. reg_active (int)
3.20. reg_gc_interval (int)
3.1. rr_from_store_param (string)
Name of Record-Route header parameter that will be used to store an
encoded version of the original FROM URI.
This parameter is optional, it's default value being “vsf”.
Example 1.1. Set rr_from_store_param parameter
...
modparam("uac","rr_from_store_param","my_param")
...
3.2. rr_to_store_param (string)
Name of Record-Route header parameter that will be used to store
(encoded) the original TO URI.
This parameter is optional, it's default value being “vst”.
Example 1.2. Set rr_to_store_param parameter
...
modparam("uac","rr_to_store_param","my_param")
...
3.3. restore_mode (string)
There are 3 modes of restoring the original FROM URI and the original
TO URI:
* “none” - no information about original URI is stored; restoration
is not possible.
* “manual” - all following replies will be restored, but not also the
sequential requests - this must be manually updated based on
original URI.
* “auto” - all sequential requests and replies will be automatically
updated based on stored original URI. For this option you have to
set “modparam("rr", "append_fromtag", 1)”.
This parameter is optional, it's default value being “auto”.
Example 1.3. Set restore_mode parameter
...
modparam("uac","restore_mode","auto")
...
3.4. restore_dlg (int)
If set to 1, the module uses dialog variables to store initial and new
values for From/To headers. The Dialog module has to be loaded and all
calls that involve changes to From/To headers must be tracked.
Default value of this parameter is 0.
Example 1.4. Set restore_dlg parameter
...
modparam("uac", "restore_dlg", 1)
...
3.5. restore_passwd (string)
String password to be used to encrypt the RR storing parameters. If
empty, no encryption will be used.
Default value of this parameter is empty.
Example 1.5. Set restore_passwd parameter
...
modparam("uac","restore_passwd","my_secret_passwd")
...
3.6. restore_from_avp (string)
If defined and restore_mode is manual or auto, the avp is used to save
the original from uri in order to be able to restore it in replies.
That makes sense, if the original-uri can not be extracted from the
original request, e.g. if msg_apply_changes() was used after calling
uac_replace_from() or uac_replace_to().
If you create a dialog ( with dlg_manage() ) before calling
uac_replace_from(), this avp will not be needed. The values of the uris
will be stored as dialog variables.
Default value of this parameter is empty.
Example 1.6. Set restore_from_avp parameter
...
modparam("uac","restore_from_avp","$avp(original_uri_from)")
...
3.7. restore_to_avp (string)
If defined and restore_mode is manual or auto, the avp is used to save
the original To URI in order to be able to restore it in replies. That
makes sense if the original-uri can not be extracted from the original
request, e.g. if msg_apply_changes() was used after calling
uac_replace_to()
If you create a dialog ( with dlg_manage() ) before calling or
uac_replace_to(), this avp will not be needed. The values of the uris
will be stored as dialog variables.
Default value of this parameter is empty.
Example 1.7. Set restore_to_avp parameter
...
modparam("uac","restore_to_avp","$avp(original_uri_to)")
...
3.8. credential (string)
Contains a multiple definition of credentials used to perform
authentication.
This parameter is required if UAC authentication is used.
Example 1.8. Set credential parameter
...
modparam("uac","credential","username:domain:password")
...
3.9. auth_realm_avp (string)
The definition of an PV that might contain the realm to be used to
perform authentication.
When the PV value is an empty string or NULL when uac_auth() is called,
the realm is taken from the reply and only username matching is done.
This can be used if the realm upstream will be using is not known in
advance.
If you define it, you also need to define “auth_username_avp” (???) and
“auth_username_avp” (???).
Example 1.9. Set auth_realm_avp parameter
...
modparam("uac","auth_realm_avp","$avp(i:10)")
...
3.10. auth_username_avp (string)
The definition of an AVP that might contain the username to be used to
perform authentication.
If you define it, you also need to define “auth_realm_avp” (???) and
“auth_username_avp” (???).
Example 1.10. Set auth_username_avp parameter
...
modparam("uac","auth_username_avp","$avp(i:11)")
...
3.11. auth_password_avp (string)
The definition of an AVP that might contain the password to be used to
perform authentication.
If you define it, you also need to define “auth_password_avp” (???) and
“auth_username_avp” (???).
Example 1.11. Set auth_password_avp parameter
...
modparam("uac","auth_password_avp","$avp(i:12)")
...
3.12. reg_db_url (string)
DB URL to fetch account profiles for registration. This parameter must
be set in order to enable remote registrations feature.
The default value is "" (no value).
Example 1.12. Set reg_db_url parameter
...
modparam("uac", "reg_db_url",
"mysql://kamailio:kamailiorw@localhost/kamailio")
...
3.13. reg_timer_interval (int)
Timer interval (in seconds) at which registrations are managed, e.g.
renewed as needed.
The default value is 90 seconds.
Example 1.13. Set reg_timer_interval parameter
...
modparam("uac", "reg_timer_interval", 60)
...
3.14. reg_retry_interval (int)
Failed registration attempts will be retried after this interval (in
seconds). The interval is not exact, retries may be attempted as much
as reg_timer_interval secs earlier. If set to 0, failed registrations
will be disabled permanently.
The default value is 0 sec (disabled)
Example 1.14. Set reg_retry_interval parameter
...
modparam("uac", "reg_retry_interval", 300)
...
3.15. reg_random_delay (int)
Set a random reg_delay for each registration that has reg_delay set to
0 in the database. If set to 0, randomization will be disabled.
The default value is 0 sec (disabled)
Example 1.15. Set reg_random_delay parameter
...
modparam("uac", "reg_random_delay", 300)
...
3.16. reg_db_table (string)
DB table name to fetch user profiles for registration.
This parameter is optional, it's default value being “uacreg”.
Example 1.16. Set reg_db_table parameter
...
modparam("uac", "reg_db_table", "uacreg")
...
3.17. reg_contact_addr (string)
Address to be used to build contact address. Must be at least host
part, can have port and parameters. Must not include 'sip:'. The
username part of the Contact: URI will be the L_UUID field in the
database.
Example 1.17. Set reg_contact_addr parameter
...
modparam("uac", "reg_contact_addr", "192.168.1.2:5080")
...
3.18. reg_keep_callid (int)
If set to 0 (default), a new Call-Id will be generated for each
registration attempt. If set to non-zero, the same Call-Id will be used
for re-registrations, as recommended by RFC3261 section 10.2.4. A new
Call-Id will be generated when a previous registration had failed.
Example 1.18. Set reg_keep_callid parameter
...
modparam("uac", "reg_keep_callid", 1)
...
3.19. reg_active (int)
If set to 0, no remote regisrations are done. In other words, it can
control at once if the module should do remote registratios or not. It
can be changed at runtime via rpc command 'uac.reg_active 0|1'.
The default value is 1 (active).
Example 1.19. Set reg_active parameter
...
modparam("uac", "reg_active", 0)
...
3.20. reg_gc_interval (int)
Timer interval (in seconds) at which remote registrations are cleaned
up in case of failure or removed. When setting it take in consideration
the maximum value for retransmission timeout, this param should be
greater than it. This value also impacts how ofter the reload for
remote registrations table can be executed -- the RPC command will fail
if executed in less than reg_gc_interval value since the last reload.
The default value is 150 seconds.
Example 1.20. Set reg_gc_interval parameter
...
modparam("uac", "reg_gc_interval", 60)
...
4. Functions
4.1. uac_replace_from(display,uri)
4.2. uac_replace_from(uri)
4.3. uac_restore_from()
4.4. uac_replace_to(display,uri)
4.5. uac_replace_to(uri)
4.6. uac_restore_to()
4.7. uac_auth()
4.8. uac_req_send()
4.9. uac_reg_lookup(uuid, dst)
4.10. uac_reg_status(uuid)
4.11. uac_reg_request_to(user, mode)
4.12. uac_reg_enable(attr, val)
4.13. uac_reg_disable(attr, val)
4.14. uac_reg_refresh(luuid)
4.1. uac_replace_from(display,uri)
Replace in FROM header the display name and the URI part.
display and URI parameters can include pseudo-variables.
This function can be used from REQUEST_ROUTE and from BRANCH_ROUTE.
NOTE: Previous versions of this function added double quotes
automatically to display variable. That is no longer the case, if you
expect that behavior, you will have to add the quotes by yourself.
If you set restore_mode to AUTO, the URI will be modified automatically
in all subsequent requests and replies in that dialog.
There are two ways in which the AUTO mode can be achieved.
One uses the rr module and appends to the Record-Route header a
parameter containing some strings from which the original and new URI
can be computed. The problem with this mode is that it relies on the
fact the parties will send the Route exactly as it was received. In
case there is a change, the resulting URIs will not be correct.
The other one uses the dialog module to store the original and new URI.
If you already use dialog module in your configuration, this is the
advisable mode. All you need to do to use this is to call dlg_manage()
before calling uac_replace_from(). It works by storing the URIs as
dialog variables and registering callbacks in dialog module for in
dialog requests.
Example 1.21. uac_replace_from usage
...
# replace both display and uri
uac_replace_from("$avp(s:display)","$avp(s:uri)");
# replace only display and do not touch uri
uac_replace_from("batman",""); # display is replaced with: batman
uac_replace_from("\"batman\"",""); # display is replaced with: "batman"
# remove display and replace uri
uac_replace_from("","sip:robin@gotham.org");
# remove display and do not touch uri
uac_replace_from("","");
...
4.2. uac_replace_from(uri)
Replace in FROM header the URI part without altering the display name.
URI parameter can include pseudo-variables.
This function can be used from REQUEST_ROUTE and from BRANCH_ROUTE.
Example 1.22. uac_replace_from usage
...
uac_replace_from("sip:batman@gotham.org");
...
4.3. uac_restore_from()
This function will check if the FROM URI was modified and will use the
information stored in header parameter to restore the original FROM URI
value.
This function can be used from REQUEST_ROUTE.
Example 1.23. uac_restore_from usage
...
uac_restore_from();
...
4.4. uac_replace_to(display,uri)
Replace in TO header the display name and the URI part.
display and URI parameters can include pseudo-variables.
This function can be used from REQUEST_ROUTE and from BRANCH_ROUTE.
NOTE: Previous versions of this function added double quotes
automatically to display variable. That is no longer the case, if you
expect that behavior, you will have to add the quotes by yourself.
Example 1.24. uac_replace_to usage
...
# replace both display and uri
uac_replace_to("$avp(display)","$avp(uri)");
# replace only display and do not touch uri
uac_replace_to("batman",""); # display is replaced with: batman
uac_replace_to("\"batman\"",""); # display is replaced with: "batman"
# remove display and replace uri
uac_replace_to("","sip:robin@gotham.org");
# remove display and do not touch uri
uac_replace_to("","");
...
4.5. uac_replace_to(uri)
Replace in TO header the URI part without altering the display name.
URI parameter can include pseudo-variables.
This function can be used from REQUEST_ROUTE and from BRANCH_ROUTE.
If you set restore_mode to AUTO, the URI will be modified automatically
in all subsequent requests and replies in that dialog.
There are two ways in which the AUTO mode can be achieved.
One uses the rr module and appends to the Record-Route header a
parameter containing some strings from which the original and new URI
can be computed. The problem with this mode is that it relies on the
fact the parties will send the Route exactly as it was received. In
case there is a change, the resulting URIs will not be correct.
The other one uses the dialog module to store the original and new URI.
If you already use dialog module in your configuration, this is the
advisable mode. All you need to do to use this is to call dlg_manage()
before calling uac_replace_to(). It works by storing the URIs as dialog
variables and registering callbacks in dialog module for in dialog
requests.
Example 1.25. uac_replace_to usage
...
uac_replace_to("sip:batman@gotham.org");
...
4.6. uac_restore_to()
This function will check if the TO URI was modified and will use the
information stored in header parameter to restore the original TO URI
value.
This function can be used from REQUEST_ROUTE.
Example 1.26. uac_restore_to usage
...
uac_restore_to();
...
4.7. uac_auth()
This function can be called only from failure route and will build the
authentication response header and insert it into the request without
sending anything.
This function can be used from FAILURE_ROUTE.
Example 1.27. uac_auth usage
...
modparam("uac","auth_username_avp","$avp(auser)")
modparam("uac","auth_password_avp","$avp(apass)")
modparam("uac","auth_realm_avp","$avp(arealm)")
request_route {
...
if(is_method("INVITE")) {
t_on_failure("TRUNKAUTH");
}
...
}
failure_route[TRUNKAUTH] {
if (t_is_canceled()) {
exit;
}
if(t_check_status("401|407")) {
$avp(auser) = "test";
$avp(apass) = "test";
uac_auth();
t_relay();
exit;
}
}
...
4.8. uac_req_send()
This function sends a SIP message from the configuration file. The
message is built out of $uac_req(...) pseudo-variable.
This function can be used from REQUEST_ROUTE, FAILURE_ROUTE,
BRANCH_ROUTE, ONREPLY_ROUTE, LOCAL_ROUTE.
Example 1.28. uac_req_send usage
...
$uac_req(method)="OPTIONS";
$uac_req(ruri)="sip:kamailio.org";
$uac_req(furi)="sip:kamailio.org";
$uac_req(turi)="sip:kamailio.org";
$uac_req(callid)=$(mb{s.md5});
uac_req_send();
...
4.9. uac_reg_lookup(uuid, dst)
This function sets the PV dst to SIP URI that correspond to uuid in uac
registrations table. uuid and dst must be pseudo-variables.
This function can be used from ANY_ROUTE.
Example 1.29. uac_reg_lookup usage
...
if(uac_reg_lookup("$rU", "$ru"))
{
lookup("location");
}
...
4.10. uac_reg_status(uuid)
This function returns the current registration status for the uuid.
Return values:
* 1 - a valid registration exists.
* -1 - uuid does not exist or an error occurred while executing the
function.
* -2 - a registration attempt is ongoing (and currently there is no
valid registration).
* -3 - registration is disabled.
* -99 - no valid registration, waiting for new registration attempt.
This function can be used from ANY_ROUTE.
Example 1.30. uac_reg_status usage
...
$var(status) = uac_reg_status("$rU");
...
4.11. uac_reg_request_to(user, mode)
This function can be used to send an authenticated request to a remote
user in the uac registrations table. It sets the request-uri, dst-uri
and auth_*_avp pv's to the values that correspond to the supplied user.
The mode indicates whether the user should match the local uuid
(mode=0), or the username (mode=1).
The auth_*_avp module parameters must be set to valid pv's.
This function can be used from REQUEST_ROUTE, FAILURE_ROUTE,
BRANCH_ROUTE.
Example 1.31. uac_reg_request_to usage
...
if(uac_reg_request_to("$fU", 0))
{
xlog("L_NOTICE", "Found remote user [$rU] on [$rd] via [$du]");
t_on_failure("REMOTE_AUTH");
t_relay()
}
...
failure_route[REMOTE_AUTH] {
if ($T_reply_code == 401 or $T_reply_code == 407) {
xlog("L_NOTICE", "Remote asked for authentication");
uac_auth();
}
}
...
4.12. uac_reg_enable(attr, val)
Enable a remote registration record based on a filter specified by
attribute and value. The attribute can be: l_uuid, l_username,
r_username or auth_username. The value is what should be matched
against the value of the attribute in the remote registration record.
The SIP processing is done on the next timer routine.
Example 1.32. uac_reg_enable usage
...
uac_reg_enable("l_uuid", "account123");
...
4.13. uac_reg_disable(attr, val)
Disable a remote registration record based on a filter specified by
attribute and value. The attribute can be: l_uuid, l_username,
r_username or auth_username. The value is what should be matched
against the value of the attribute in the remote registration record.
The SIP processing is done on the next timer routine.
Example 1.33. uac_reg_disable usage
...
uac_reg_disable("l_uuid", "account123");
...
4.14. uac_reg_refresh(luuid)
Refresh the uac remote registration record based on local uuid. If the
record was already loaded, new values are taken from database,
otherwise a new record is created.
Example 1.34. uac_reg_refresh usage
...
uac_reg_refresh("account123");
...
5. Pseudo Variables
* $uac_req(key)
Exported pseudo-variables are documented at
https://www.kamailio.org/wiki/.
6. Event Routes
6.1. event_route[uac:reply]
6.1. event_route[uac:reply]
Event route executed for the final reply of the branch for the request
sent with uac_req_send(). The associated $uac_req(evroute) has to be
set to 1. If the request is challenged for authentication with 401/407,
then the event_route is executed twice, first for 401/407 and second
for final reply of the transaction.
Example 1.35. event_route[uac:reply] usage
...
$uac_req(method)="OPTIONS";
$uac_req(ruri)="sip:kamailio.org";
$uac_req(furi)="sip:kamailio.org";
$uac_req(turi)="sip:kamailio.org";
$uac_req(callid)=$(mb{s.md5});
$uac_req(evroute)=1;
uac_req_send();
...
event_route[uac:reply] {
xlog("received reply code is: $uac_req(evcode)\n");
}
...
7. Counters
* regtotal: Total number of registrations
* regactive: Total number of active registrations (successfully
registered with service)
* regdisabled: Total number of disabled registrations (no longer
active)
8. RPC Commands
8.1. uac.reg_dump
8.2. uac.reg_info
8.3. uac.reg_enable
8.4. uac.reg_disable
8.5. uac.reg_reload
8.6. uac.reg_refresh
8.7. uac.reg_active
8.1. uac.reg_dump
Dump the content of remote registration table from memory.
Example 1.36. uac.reg_dump usage
...
kamcmd uac.reg_dump
...
8.2. uac.reg_info
Return the details of a remote registration record based on a filter.
The command has two parameter: attribute and value. The attribute can
be: l_uuid, l_username, r_username or auth_username. The value is what
should be matched against the value of the attribute in the remote
registration record.
The state of the registration is reflected in the flags field:
* 1 (2^0) - registration profile is disabled
* 2 (2^1) - registration in progress
* 4 (2^2) - registration succeeded
* 8 (2^3) - registration in progres with authentication
* 16 (2^4) - registration initialized (after loading from database,
the registration process was initialized)
Example 1.37. uac.reg_info usage
...
kamcmd uac.reg_info l_uuid account123
kamcmd uac.reg_info l_uuid s:12345678
...
8.3. uac.reg_enable
Enable a remote registration record based on a filter. The command has
two parameter: attribute and value. The attribute can be: l_uuid,
l_username, r_username or auth_username. The value is what should be
matched against the value of the attribute in the remote registration
record.
Example 1.38. uac.reg_enable usage
...
kamcmd uac.reg_enable l_uuid account123
kamcmd uac.reg_enable l_uuid s:12345678
...
8.4. uac.reg_disable
Disable a remote registration record based on a filter. The command has
two parameter: attribute and value. The attribute can be: l_uuid,
l_username, r_username or auth_username. The value is what should be
matched against the value of the attribute in the remote registration
record.
Example 1.39. uac.reg_disable usage
...
kamcmd uac.reg_disable l_uuid account123
kamcmd uac.reg_disable l_uuid s:12345678
...
8.5. uac.reg_reload
Reload the records from database for remote registrations. There is a
limit of how often the reload command can be executed, by default is
150 seconds between reloads -- see the reg_gc_interval parameter for
more details.
Example 1.40. uac.reg_reload usage
...
kamcmd uac.reg_reload
...
8.6. uac.reg_refresh
Load one record by l_uuid from database for remote registrations. If
the record exists in memory, it will be replaced with the new values
loaded from database.
Example 1.41. uac.reg_refresh usage
...
kamcmd uac.reg_refresh account123
kamcmd uac.reg_refresh s:12345678
...
8.7. uac.reg_active
Control if the module should do remote registrations or not. Setting to
1 enables remote registrations for all records and 0 disables doing
them.
Example 1.42. uac.reg_active usage
...
kamctl rpc uac.reg_active 0
kamctl rpc uac.reg_active 1
...
9. Remote Registration
The module can register contact addresses to remote REGISTRAR servers.
You have to add records to uacreg table. The table stores following
attributes:
* l_uuid - local unique user id, e.g.,: 12345678
* l_username - local user name, e.g.,: test
* l_domain - local domain, e.g.,: mysipserver.com
* r_username - remote username, e.g.,: test123
* r_domain - remote domain, e.g.,: sipprovider.com
* realm - remote relam, e.g.,: sipprovider.com
* auth_username - authentication username, e.g.,: test123
* auth_password - authentication password, e.g.,: xxxxxx
* auth_proxy - SIP address of authentication proxy, e.g.,:
sip:sipprovider.com
* expires - expiration time for registration, in seconds, e.g.,: 360
* flags - the state of the registration, see Section 8.2, “
uac.reg_info ”
* reg_delay - delay initial registration with at least reg_delay
seconds, e.g.,: 3
The module takes care of sending REGISTER and refresh registrations
before they expire.
When calls come in, you have to run uac_reg_lookup() that will detect
if the call is coming from a remote SIP provider and can change the
R-URI to local username@domain. Afterwards you can run location lookup.
Example 1.43. lookup remote registrations usage
...
if(uac_reg_lookup("$rU", "$ru")) {
xlog("request from a remote SIP provider [$ou => $ru]\n");
}
lookup("location");
...