JSON Module

Matthew Williams

Edited by

Matthew Williams

Copyright © 2011 Flowroute LLC (flowroute.com)

Table of Contents

1. Admin Guide
1. Overview
2. Dependencies
2.1. Kamailio Modules
2.2. External Libraries or Applications
3. Functions
3.1. json_get_field(json_string, field_name, destination)

List of Examples

1.1. json_get_field usage

Chapter 1. Admin Guide

Table of Contents

1. Overview
2. Dependencies
2.1. Kamailio Modules
2.2. External Libraries or Applications
3. Functions
3.1. json_get_field(json_string, field_name, destination)

1. Overview

This is a simple module allowing to retrieve values from a JSON string.

For more complex operations with JSON documents, see the JANSSON module.

2. Dependencies

2.1. Kamailio Modules

The following modules must be loaded before this module:

  • None

2.2. External Libraries or Applications

The following libraries or applications must be installed before running Kamailio with this module loaded:

  • libjson (https://github.com/json-c/json-c/wiki)

3. Functions

3.1.  json_get_field(json_string, field_name, destination)

Copy field 'field_name' from json object 'json_string' and store it in pvar 'destination'.

Note that the result is the string representation of that JSON filed. For example, if you want to retrieve a field that has a string value, then the result is the value enclosed in quotes. If the field value is a structure, then the result is the string-formatted representation of that structure.

Example 1.1. json_get_field usage 

...
json_get_field("{'foo':'bar'}", "foo", "$var(foo)");
xlog("foo is $var(foo)");
...