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<!-- Module User's Guide -->

<chapter>

    <title>&adminguide;</title>

    <section>
	<title>Overview</title>
	<para>
		This module allows real-time queries against the libphonenumber
		to be performed from the config script. With that it is possible
		to get normalize and get details about a phone number.
	</para>
	<para>
		More details about libphonenumber can be found at
		<ulink url="https://github.com/googlei18n/libphonenumber">
			https://github.com/googlei18n/libphonenumber</ulink>.
	</para>
	<para>
		This module exports a new class of pseudo-variables -
		$phn(pvc=&gt;key) - to enable access to the results of a query to the
		database.
	</para>
	<para>
		Many queries can be done and store results in different containers to
		be able to use in parallel.
	</para>
    </section>
    <section>
	<title>Dependencies</title>
	<section>
	    <title>&kamailio; Modules</title>
	    <para>
		The following modules must be loaded before this module:
	    	<itemizedlist>
		    <listitem>
			<para>
			    <emphasis>none</emphasis>.
			</para>
		    </listitem>
	    	</itemizedlist>
	    </para>
	</section>
	<section>
	    <title>External Libraries or Applications</title>
	    <para>
		The following libraries or applications must be installed before running
		&kamailio; with this module loaded:
	    	<itemizedlist>
		    <listitem>
			<para>
			    <emphasis>libphonenumber</emphasis> - the phone number library.
			</para>
		    </listitem>
	    	</itemizedlist>
	    </para>
	</section>
    </section>
    <section>
	<title>Parameters</title>
	<section id="phonenum.p.smode">
	    <title><varname>smode</varname> (int)</title>
	    <para>
		Phone number search mode (not in use yet).
	    </para>
	    <para>
		<emphasis>
		    Default value is <quote>0</quote>.
		</emphasis>
	    </para>
	    <example>
		<title>Set <varname>smode</varname> parameter</title>
		<programlisting format="linespecific">
...
modparam("phonenum", "smode", 0)
...
</programlisting>
	    </example>
	</section>
	<section id="phonenum.p.resid">
	    <title><varname>resid</varname> (str)</title>
	    <para>
		Preregister result container id during initialization, enabling the use
		of the module in KEMI scripts. In native &kamailio;.cfg file, registration
		is done when parsing config and finding variables.
	    </para>
	    <para>
		<emphasis>
		    Default value is <quote></quote> (empty).
		</emphasis>
	    </para>
	    <example>
		<title>Set <varname>resid</varname> parameter</title>
		<programlisting format="linespecific">
...
modparam("phonenum", "resid", "src")
...
if(phonenum_match("1-484-555-8888", "src")) {
   ...
}
...
</programlisting>
	    </example>
	</section>
	</section>

    <section>
	<title>Functions</title>
	<section id="phonenum.f.phonenum_match">
	    <title>
		<function moreinfo="none">phonenum_match(num, pvc)</function>
	    </title>
	    <para>
			Match num against the libphonenumber and set the attributes inside
			the pvc result container. The function has to be called before accessing
			a key via: $phn(pvc=&gt;key).
	    </para>
	    <para>
	    	The parameters can be static strings or strings with variables.
	    </para>
	    <para>
	    	It can be used from ANY_ROUTE.
	    </para>
		<example>
		<title><function>phonenum_match</function> usage</title>
		<programlisting format="linespecific">
...
if(phonenum_match("1-484-555-8888", "src")) {
    if($phn(src=&gt;valid)==1) {
        xlog("number normalized to: $phn(src=&gt;normalized)\n");
    } else {
        xlog("number normalization error: $phn(src=&gt;error)\n");
    }
}
...
</programlisting>
	    </example>
	</section>
	<section id="phonenum.f.phonenum_match_cn">
	    <title>
		<function moreinfo="none">phonenum_match_cn(num, cnc, pvc)</function>
	    </title>
	    <para>
			Match num against the libphonenumber and set the attributes inside
			the pvc container, restricting the rules with a country name code
			(two letter, e.g: "DE", "US", "ES"). The function has to be called
			before accessing a key via: $phn(pvc=&gt;key).
	    </para>
	    <para>
			Note from libphonenumber library docs: country name code is the region
			that is expected the number to be from. It is only used if the number
			being parsed is not written in international format. The country code
			for the number in this case would be stored as that of the region
			supplied. If the number is guaranteed to start with a '+' followed
			by the country calling code, then region 'ZZ'.
	    </para>
	    <para>
			The parameters can be static strings or strings with variables.
	    </para>
	    <para>
			It can be used from ANY_ROUTE.
	    </para>
		<example>
		<title><function>phonenum_match_cn</function> usage</title>
		<programlisting format="linespecific">
...
if(phonenum_match_cn("1-484-555-8888", "US", "src")) {
    if($phn(src=&gt;valid)==1) {
        xlog("number normalized to: $phn(src=&gt;normalized)\n");
    } else {
        xlog("number normalization error: $phn(src=&gt;error)\n");
    }
}
...
</programlisting>
	    </example>
	</section>
    </section>

	<section>
		<title>Pseudo Variables</title>
		<itemizedlist>
			<listitem><para>
				<emphasis>$phn(pvc=&gt;key)</emphasis> - <emphasis>pvc</emphasis>
				is an identifier for this query result; it is designated by
				the second parameter of phonenum_match().
				The <emphasis>key</emphasis> can be one of the following:
				</para>
			<itemizedlist>
				<listitem><para>
					<emphasis>number</emphasis> - phone number that is matched
				</para></listitem>
				<listitem><para>
					<emphasis>valid</emphasis> - 1 if the matched number has a
					valid result; 0 otherwise
				</para></listitem>
				<listitem><para>
					<emphasis>normalized</emphasis> - normalized phone number
				</para></listitem>
				<listitem><para>
					<emphasis>cctel</emphasis> - country code for phone number
				</para></listitem>
				<listitem><para>
					<emphasis>ccname</emphasis> - country code name
				</para></listitem>
				<listitem><para>
					<emphasis>ltype</emphasis> - local network type
				</para></listitem>
				<listitem><para>
					<emphasis>ndesc</emphasis> - phone number description
				</para></listitem>
				<listitem><para>
					<emphasis>error</emphasis> - error string if phone number
					matching fails.
				</para></listitem>
			</itemizedlist>
			</listitem>
		</itemizedlist>
		<para>
		Exported pseudo-variables are documented at &kamwikilink;.
		</para>
	</section>

</chapter>

