domain Module

List of Tables

3.1. Top contributors by DevScore⁽¹⁾, authored commits⁽²⁾ and lines added/removed⁽³⁾
3.2. Most recently active contributors⁽¹⁾ to this module

List of Examples

1.1. Setting db_url parameter
1.2. db_mode example
1.3. Setting domain_table parameter
1.4. Setting domain_col parameter
1.5. Setting attrs_col parameter
1.6. is_from_local usage
1.7. is_uri_host_local usage
1.8. is_domain_local usage

Chapter 1. Admin Guide

1.1. Overview

Domain module implements checks that based on domain table determine if a host part of an URI is “local” or not. A “local” domain is one that the proxy is responsible for.

Domain module operates in caching or non-caching mode depending on value of module parameter db_mode. In caching mode domain module reads the contents of domain table into cache memory when the module is loaded. After that domain table is re-read only when module is given domain_reload fifo command. Any changes in domain table must thus be followed by “domain_reload” command in order to reflect them in module behavior. In non-caching mode domain module always queries domain table in the database.

Caching is implemented using a hash table. The size of the hash table is given by HASH_SIZE constant defined in domain_mod.h. Its “factory default” value is 128.

1.2. Dependencies

The module depends on the following modules (in the other words the listed modules must be loaded before this module):

database -- Any database module

1.3. Exported Parameters

1.3.1. `db_url` (string)

This is URL of the database to be used.

Default value is “mysql://opensipsro:opensipsro@localhost/opensips”

Example 1.1. Setting db_url parameter

modparam("domain", "db_url", "mysql://ser:pass@db_host/ser")

1.3.2. `db_mode` (integer)

Database mode: 0 means non-caching, 1 means caching.

Default value is 0 (non-caching).

Example 1.2. db_mode example

modparam("domain", "db_mode", 1)   # Use caching

1.3.3. `domain_table` (string)

Name of table containing names of local domains that the proxy is responsible for. Local users must have in their sip uri a host part that is equal to one of these domains.

Default value is “domain”.

Example 1.3. Setting domain_table parameter

modparam("domain", "domain_table", "new_name")

1.3.4. `domain_col` (string)

Name of column containing domains in domain table.

Default value is “domain”.

Example 1.4. Setting domain_col parameter

modparam("domain", "domain_col", "domain_name")

1.3.5. `attrs_col` (string)

Name of column containing attributes in domain table.

Default value is “attrs”.

Example 1.5. Setting attrs_col parameter

modparam("domain", "attrs_col", "attributes")

1.4. Exported Functions

1.4.1. `is_from_local([attrs_var])`

Checks based on domain table if host part of From header uri is one of the local domains that the proxy is responsible for. The argument is optional and if present it should contain a writable variable that will be populated with the attributes from the database.

This function can be used from REQUEST_ROUTE.

Example 1.6. is_from_local usage

...
if (is_from_local()) {
	...
};
...
if (is_from_local($var(attrs))) {
	xlog("Domain attributes are $var(attrs)\n");
	...
};
...

1.4.2. `is_uri_host_local([attrs_var])`

If called from route or failure route block, checks based on domain table if host part of Request-URI is one of the local domains that the proxy is responsible for. If called from branch route, the test is made on host part of URI of first branch, which thus must have been appended to the transaction before is_uri_host_local() is called. The argument is optional and if present it should contain a writable variable that will be populated with the attributes from the database.

This function can be used from REQUEST_ROUTE, FAILURE_ROUTE, BRANCH_ROUTE.

Example 1.7. is_uri_host_local usage

...
if (is_uri_host_local()) {
	...
};
...
if (is_uri_host_local($var(attrs))) {
	xlog("Domain attributes are $var(attrs)\n");
	...
};

1.4.3. `is_domain_local(domain, [attrs_var])`

This function checks if the domain contained in the first parameter is local.

This function is a generalized form of the is_from_local() and is_uri_host_local() functions, being able to completely replace them and also extends them by allowing the domain to be taken from any of the above mentioned sources. The following equivalences exist:

is_domain_local($rd) is same as is_uri_host_local()
is_domain_local($fd) is same as is_from_local()

Parameters:

domain (string)
attrs_var (var, optional) - a writable variable that will be populated with the attributes from the database.

This function can be used from REQUEST_ROUTE, FAILURE_ROUTE, BRANCH_ROUTE.

Example 1.8. is_domain_local usage

...
if (is_domain_local($rd)) {
	...
};
if (is_domain_local($fd)) {
	...
};
if (is_domain_local($avp(some_avp_alias))) {
	...
};
if (is_domain_local($avp(850))) {
	...
};
if (is_domain_local($avp(some_avp))) {
	...
};
if (is_domain_local($avp(some_avp), $avp(attrs))) {
	xlog("Domain attributes are $avp(attrs)\n");
	...
};
...

1.5. Exported MI Functions

1.5.1. `domain_reload`

Causes domain module to re-read the contents of domain table into cache memory.

Name: domain_reload

Parameters: none

MI FIFO Command Format:

		opensips-cli -x mi domain_reload

1.5.2. `domain_dump`

Causes domain module to dump hash indexes and domain names in its cache memory.

Name: domain_dump

Parameters: none

MI FIFO Command Format:

		opensips-cli -x mi domain_dump

1.6. Known Limitations

There is an unlikely race condition on domain list update. If a process uses a table, which is reloaded at the same time twice through FIFO, the second reload will delete the original table still in use by the process.

Chapter 2. Developer Guide

The module provides is_domain_local API function for use by other OpenSIPS modules.

2.1. Available Functions

2.1.1. `is_domain_local(domain)`

Checks if domain given in str* parameter is local.

The function returns 1 if domain is local and -1 if domain is not local or if an error occurred.

Chapter 3. Contributors

3.1. By Commit Statistics

Table 3.1. Top contributors by DevScore⁽¹⁾, authored commits⁽²⁾ and lines added/removed⁽³⁾

	Name	DevScore	Commits	Lines ++	Lines --
1.	Bogdan-Andrei Iancu (@bogdan-iancu)	55	41	425	559
2.	Jan Janak (@janakj)	32	21	999	113
3.	Juha Heinanen (@juha-h)	31	20	700	233
4.	Razvan Crainea (@razvancrainea)	20	13	287	221
5.	Daniel-Constantin Mierla (@miconda)	19	16	92	79
6.	Liviu Chircu (@liviuchircu)	11	8	45	109
7.	Vlad Patrascu (@rvlad-patrascu)	9	5	96	123
8.	Andrei Pelinescu-Onciul	9	4	186	121
9.	Dan Pascu (@danpascu)	8	4	232	101
10.	Henning Westerholt (@henningw)	7	5	44	48

All remaining contributors: Edson Gellert Schubert, Elena-Ramona Modroiu, Jiri Kuthan (@jiriatipteldotorg), @coxx, Konstantin Bokarius, Klaus Darilion, Anca Vamanu, Norman Brandinger (@NormB), Peter Lemenkov (@lemenkov), UnixDev, Andreas Granig.

(1) DevScore = author_commits + author_lines_added / (project_lines_added / project_commits) + author_lines_deleted / (project_lines_deleted / project_commits)

(2) including any documentation-related commits, excluding merge commits. Regarding imported patches/code, we do our best to count the work on behalf of the proper owner, as per the "fix_authors" and "mod_renames" arrays in opensips/doc/build-contrib.sh. If you identify any patches/commits which do not get properly attributed to you, please submit a pull request which extends "fix_authors" and/or "mod_renames".

(3) ignoring whitespace edits, renamed files and auto-generated files

3.2. By Commit Activity

Table 3.2. Most recently active contributors⁽¹⁾ to this module

	Name	Commit Activity
1.	Bogdan-Andrei Iancu (@bogdan-iancu)	Oct 2005 - Jun 2020
2.	Razvan Crainea (@razvancrainea)	Jun 2011 - Sep 2019
3.	Vlad Patrascu (@rvlad-patrascu)	May 2017 - Apr 2019
4.	Liviu Chircu (@liviuchircu)	Mar 2014 - Nov 2018
5.	Peter Lemenkov (@lemenkov)	Jun 2018 - Jun 2018
6.	@coxx	Mar 2010 - Mar 2010
7.	Anca Vamanu	Sep 2009 - Sep 2009
8.	UnixDev	Feb 2009 - Feb 2009
9.	Juha Heinanen (@juha-h)	Jan 2003 - May 2008
10.	Henning Westerholt (@henningw)	May 2007 - May 2008

All remaining contributors: Daniel-Constantin Mierla (@miconda), Konstantin Bokarius, Edson Gellert Schubert, Elena-Ramona Modroiu, Dan Pascu (@danpascu), Norman Brandinger (@NormB), Andreas Granig, Klaus Darilion, Jan Janak (@janakj), Andrei Pelinescu-Onciul, Jiri Kuthan (@jiriatipteldotorg).

(1) including any documentation-related commits, excluding merge commits

Chapter 4. Documentation

4.1. Contributors

Last edited by: Vlad Patrascu (@rvlad-patrascu), Razvan Crainea (@razvancrainea), Peter Lemenkov (@lemenkov), Liviu Chircu (@liviuchircu), Bogdan-Andrei Iancu (@bogdan-iancu), Daniel-Constantin Mierla (@miconda), Konstantin Bokarius, Edson Gellert Schubert, Juha Heinanen (@juha-h), Elena-Ramona Modroiu, Dan Pascu (@danpascu), Klaus Darilion, Jan Janak (@janakj).