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kamailio/modules_s/usrloc/doc/api.xml

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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
<section id="usrloc.api" xmlns:xi="http://www.w3.org/2001/XInclude">
<sectioninfo>
</sectioninfo>
<title>Usrloc Module API</title>
<section id="ul_register_domain">
<title>
<function>ul_register_domain(name)</function>
</title>
<para>
The function registers a new domain. Domain is just another name
for table used in registrar. The function is called from fixups in
registrar. It gets name of the domain as a parameter and returns
pointer to a new domain structure. The fixup than 'fixes' the
parameter in registrar so that it will pass the pointer instead of
the name every time save() or lookup() is called. Some usrloc
functions get the pointer as parameter when called. For more
details see implementation of save function in registrar.
</para>
<para>Meaning of the parameters is as follows:</para>
<itemizedlist>
<listitem>
<para><emphasis>const char* name</emphasis> - Name of the domain (also called
table) to be registered.
</para>
</listitem>
</itemizedlist>
</section>
<section id="ul_insert_urecord">
<title>
<function>ul_insert_urecord(domain, aor, rec)</function>
</title>
<para>
The function creates a new record structure and inserts it in the
specified domain. The record is structure that contains all the
contacts for belonging to the specified username.
</para>
<para>Meaning of the parameters is as follows:</para>
<itemizedlist>
<listitem>
<para>
<emphasis>udomain_t* domain</emphasis> - Pointer to domain
returned by ul_register_udomain.
</para>
</listitem>
</itemizedlist>
<itemizedlist>
<listitem>
<para>
<emphasis>str* aor</emphasis> - Address of Record (aka
username) of the new record (at this time the record will
contain no contacts yet).
</para>
</listitem>
</itemizedlist>
<itemizedlist>
<listitem>
<para>
<emphasis>urecord_t** rec</emphasis> - The newly created
record structure.
</para>
</listitem>
</itemizedlist>
</section>
<section id="ul_delete_urecord">
<title>
<function>ul_delete_urecord(domain, aor)</function>
</title>
<para>
The function deletes all the contacts bound with the given Address
Of Record.
</para>
<para>Meaning of the parameters is as follows:</para>
<itemizedlist>
<listitem>
<para>
<emphasis>udomain_t* domain</emphasis> - Pointer to domain returned by ul_register_udomain.
</para>
</listitem>
</itemizedlist>
<itemizedlist>
<listitem>
<para>
<emphasis>str* aor</emphasis> - Address of record (aka
username) of the record, that should be deleted.
</para>
</listitem>
</itemizedlist>
</section>
<section id="ul_get_urecord">
<title>
<function>ul_get_urecord(domain, aor)</function>
</title>
<para>
The function returns pointer to record with given Address of Record.
</para>
<para>Meaning of the parameters is as follows:</para>
<itemizedlist>
<listitem>
<para>
<emphasis>udomain_t* domain</emphasis> - Pointer to domain
returned by ul_register_udomain.
</para>
</listitem>
</itemizedlist>
<itemizedlist>
<listitem>
<para>
<emphasis>str* aor</emphasis> - Address of Record of
request record.
</para>
</listitem>
</itemizedlist>
</section>
<section id="ul_lock_udomain">
<title>
<function>ul_lock_udomain(domain)</function>
</title>
<para>
The function lock the specified domain, it means, that no other
processes will be able to access during the time. This prevents
race conditions. Scope of the lock is the specified domain, that
means, that multiple domain can be accessed simultaneously, they
don't block each other.
</para>
<para>Meaning of the parameters is as follows:</para>
<itemizedlist>
<listitem>
<para><emphasis>udomain_t* domain</emphasis> - Domain to be locked.
</para>
</listitem>
</itemizedlist>
</section>
<section id="ul_unlock_udomain">
<title>
<function>ul_unlock_udomain(domain)</function>
</title>
<para>
Unlock the specified domain previously locked by ul_lock_udomain.
</para>
<para>Meaning of the parameters is as follows:</para>
<itemizedlist>
<listitem>
<para><emphasis>udomain_t* domain</emphasis> - Domain to be unlocked.
</para>
</listitem>
</itemizedlist>
</section>
<section id="ul_release_urecord">
<title>
<function>ul_release_urecord(record)</function>
</title>
<para>
Do some sanity checks - if all contacts have been removed, delete
the entire record structure.
</para>
<para>Meaning of the parameters is as follows:</para>
<itemizedlist>
<listitem>
<para><emphasis>urecord_t* record</emphasis> - Record to be released.
</para>
</listitem>
</itemizedlist>
</section>
<section id="ul_insert_ucontact">
<title>
<function>
ul_insert_ucontact(record, contact, expires, q, callid, cseq,
flags, cont, ua)
</function>
</title>
<para>
The function inserts a new contact in the given record with
specified parameters.
</para>
<para>Meaning of the parameters is as follows:</para>
<itemizedlist>
<listitem>
<para>
<emphasis>urecord_t* record</emphasis> - Record in which
the contact should be inserted.
</para>
</listitem>
</itemizedlist>
<itemizedlist>
<listitem>
<para>
<emphasis>str* contact</emphasis> - Contact URI.
</para>
</listitem>
</itemizedlist>
<itemizedlist>
<listitem>
<para>
<emphasis>time_t expires</emphasis> - Expires of the
contact in absolute value.
</para>
</listitem>
</itemizedlist>
<itemizedlist>
<listitem>
<para>
<emphasis>float q</emphasis> - q value of the contact.
</para>
</listitem>
</itemizedlist>
<itemizedlist>
<listitem>
<para>
<emphasis>str* callid</emphasis> - Call-ID of the REGISTER
message that contained the contact.
</para>
</listitem>
</itemizedlist>
<itemizedlist>
<listitem>
<para>
<emphasis>int cseq</emphasis> - CSeq of the REGISTER
message that contained the contact.
</para>
</listitem>
</itemizedlist>
<itemizedlist>
<listitem>
<para>
<emphasis>unsigned int flags</emphasis> - Flags to be set.
</para>
</listitem>
</itemizedlist>
<itemizedlist>
<listitem>
<para>
<emphasis>ucontact_t* cont</emphasis> - Pointer to newly
created structure.
</para>
</listitem>
</itemizedlist>
<itemizedlist>
<listitem>
<para>
<emphasis>str* ua</emphasis> - User-Agent of the REGISTER
message that contained the contact.
</para>
</listitem>
</itemizedlist>
</section>
<section id="ul_delete_ucontact">
<title>
<function>ul_delete_ucontact(record, contact)</function>
</title>
<para>
The function deletes given contact from record.
</para>
<para>Meaning of the parameters is as follows:</para>
<itemizedlist>
<listitem>
<para><emphasis>urecord_t* record</emphasis> - Record from which the contact should be removed.
</para>
</listitem>
</itemizedlist>
<itemizedlist>
<listitem>
<para><emphasis>ucontact_t* contact</emphasis> - Contact to be deleted.
</para>
</listitem>
</itemizedlist>
</section>
<section id="ul_get_ucontact">
<title>
<function>ul_get_ucontact(record, contact)</function>
</title>
<para>
The function tries to find contact with given Contact URI and returns pointer to
structure representing the contact.
</para>
<para>Meaning of the parameters is as follows:</para>
<itemizedlist>
<listitem>
<para>
<emphasis>urecord_t* record</emphasis> - Record to be
searched for the contact.
</para>
</listitem>
</itemizedlist>
<itemizedlist>
<listitem>
<para>
<emphasis>str_t* contact</emphasis> - URI of the request
contact.
</para>
</listitem>
</itemizedlist>
</section>
<section id="ul_get_all_ucontacts">
<title>
<function>ul_get_all_ucontacts(buf, len, flags)</function>
</title>
<para>
The function retrieves all contacts of all registered users and
returns them in the caller-supplied buffer. If the buffer is too
small, the function returns positive value indicating how much
additional space would be necessary to accommodate all of
them. Please note that the positive return value should be used
only as a "hint", as there is no guarantee that during
the time between two subsequent calls number of registered contacts
will remain the same.
</para>
<para>
If flag parameter is set to non-zero value then only contacts that
have the specified flags set will be returned. It is, for example,
possible to list only contacts that are behind NAT.
</para>
<para>Meaning of the parameters is as follows:</para>
<itemizedlist>
<listitem>
<para>
<emphasis>void* buf</emphasis> - Buffer for returning contacts.
</para>
</listitem>
</itemizedlist>
<itemizedlist>
<listitem>
<para>
<emphasis>int len</emphasis> - Length of the buffer.
</para>
</listitem>
</itemizedlist>
<itemizedlist>
<listitem>
<para>
<emphasis>unsigned int flags</emphasis> - Flags that must be set.
</para>
</listitem>
</itemizedlist>
</section>
<section id="ul_update_ucontact">
<title>
<function>
ul_update_ucontact(contact, expires, q, callid, cseq, set, res,
ua)
</function>
</title>
<para>
The function updates contact with new values.
</para>
<para>Meaning of the parameters is as follows:</para>
<itemizedlist>
<listitem>
<para>
<emphasis>ucontact_t* contact</emphasis> - Contact URI.
</para>
</listitem>
</itemizedlist>
<itemizedlist>
<listitem>
<para>
<emphasis>time_t expires</emphasis> - Expires of the contact in absolute value.
</para>
</listitem>
</itemizedlist>
<itemizedlist>
<listitem>
<para>
<emphasis>float q</emphasis> - q value of the contact.
</para>
</listitem>
</itemizedlist>
<itemizedlist>
<listitem>
<para>
<emphasis>str* callid</emphasis> - Call-ID of the REGISTER message that contained the contact.
</para>
</listitem>
</itemizedlist>
<itemizedlist>
<listitem>
<para>
<emphasis>int cseq</emphasis> - CSeq of the REGISTER message that contained the contact.
</para>
</listitem>
</itemizedlist>
<itemizedlist>
<listitem>
<para>
<emphasis>unsigned int set</emphasis> - OR value of flags to be set.
</para>
</listitem>
</itemizedlist>
<itemizedlist>
<listitem>
<para>
<emphasis>unsigned int res</emphasis> - OR value of flags to be reset.
</para>
</listitem>
</itemizedlist>
<itemizedlist>
<listitem>
<para>
<emphasis>str* ua</emphasis> - User-Agent of the REGISTER message that contained the contact.
</para>
</listitem>
</itemizedlist>
</section>
</section>