func_callerid.c

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/*
 * Asterisk -- An open source telephony toolkit.
 *
 * Copyright (C) 1999-2010, Digium, Inc.
 *
 * See http://www.asterisk.org for more information about
 * the Asterisk project. Please do not directly contact
 * any of the maintainers of this project for assistance;
 * the project provides a web site, mailing lists and IRC
 * channels for your use.
 *
 * This program is free software, distributed under the terms of
 * the GNU General Public License Version 2. See the LICENSE file
 * at the top of the source tree.
 */
 
/*! \file
 *
 * \brief Party ID related dialplan functions (Caller-ID, Connected-line, Redirecting)
 *
 * \ingroup functions
 *
 * See Also:
 * \arg \ref AstCREDITS
 */
 
/*** MODULEINFO
    <support_level>core</support_level>
 ***/
 
#include "asterisk.h"
 
#include "asterisk/module.h"
#include "asterisk/channel.h"
#include "asterisk/pbx.h"
#include "asterisk/utils.h"
#include "asterisk/app.h"
#include "asterisk/callerid.h"
 
/*
 * The CALLERID(pres) datatype is shorthand for getting/setting the
 * combined value of name-pres and num-pres.  Some channel drivers
 * don't make a distinction, so it makes sense to only use one property
 * to get/set it.  The same applies to CONNECTEDLINE(pres),
 * REDIRECTING(orig-pres), REDIRECTING(from-pres) and REDIRECTING(to-pres).
 *
 * Do not document the CALLERID(ton) datatype.
 * It is an alias for num-plan.
 *
 * Do not document the CALLERID(ANI-subaddr-...) datatype.
 * This is not used.
 *
 * Do not document the CONNECTEDLINE(source) datatype.
 * It has turned out to not be needed.  The source value is really
 * only useful as a possible tracing aid.
 *
 * Do not document the CONNECTEDLINE(ton) datatype.
 * It is an alias for num-plan.
 *
 * Do not document the REDIRECTING(pres) datatype.
 * It has turned out that the from-pres and to-pres values must be kept
 * separate.  They represent two different parties and there is a case when
 * they are active at the same time.  The plain pres option will simply
 * live on as a historical relic.
 *
 * Do not document the REDIRECTING(orig-ton), REDIRECTING(from-ton),
 * or REDIRECTING(to-ton) datatypes.
 * They are aliases for orig-num-plan, from-num-plan, and to-num-plan
 * respectively.
 */
/*** DOCUMENTATION
    <function name="CALLERID" language="en_US">
        <synopsis>
            Gets or sets Caller*ID data on the channel.
        </synopsis>
        <syntax>
            <parameter name="datatype" required="true">
                <para>The allowable datatypes are:</para>
                <enumlist>
                    <enum name = "all" />
                    <enum name = "name" />
                    <enum name = "name-valid" />
                    <enum name = "name-charset" />
                    <enum name = "name-pres" />
                    <enum name = "num" />
                    <enum name = "num-valid" />
                    <enum name = "num-plan" />
                    <enum name = "num-pres" />
                    <enum name = "pres" />
                    <enum name = "subaddr" />
                    <enum name = "subaddr-valid" />
                    <enum name = "subaddr-type" />
                    <enum name = "subaddr-odd" />
                    <enum name = "tag" />
                    <enum name = "priv-all" />
                    <enum name = "priv-name" />
                    <enum name = "priv-name-valid" />
                    <enum name = "priv-name-charset" />
                    <enum name = "priv-name-pres" />
                    <enum name = "priv-num" />
                    <enum name = "priv-num-valid" />
                    <enum name = "priv-num-plan" />
                    <enum name = "priv-num-pres" />
                    <enum name = "priv-subaddr" />
                    <enum name = "priv-subaddr-valid" />
                    <enum name = "priv-subaddr-type" />
                    <enum name = "priv-subaddr-odd" />
                    <enum name = "priv-tag" />
                    <enum name = "ANI-all" />
                    <enum name = "ANI-name" />
                    <enum name = "ANI-name-valid" />
                    <enum name = "ANI-name-charset" />
                    <enum name = "ANI-name-pres" />
                    <enum name = "ANI-num" />
                    <enum name = "ANI-num-valid" />
                    <enum name = "ANI-num-plan" />
                    <enum name = "ANI-num-pres" />
                    <enum name = "ANI-tag" />
                    <enum name = "RDNIS" />
                    <enum name = "DNID" />
                    <enum name = "dnid-num-plan" />
                    <enum name = "dnid-subaddr" />
                    <enum name = "dnid-subaddr-valid" />
                    <enum name = "dnid-subaddr-type" />
                    <enum name = "dnid-subaddr-odd" />
                </enumlist>
            </parameter>
            <parameter name="CID">
                <para>Optional Caller*ID to parse instead of using the Caller*ID from the
                channel. This parameter is only optional when reading the Caller*ID.</para>
            </parameter>
        </syntax>
        <description>
            <para>Gets or sets Caller*ID data on the channel. Uses channel callerid by
            default or optional callerid, if specified.</para>
            <para>The <replaceable>pres</replaceable> field gets/sets a combined value
            for <replaceable>name-pres</replaceable> and
            <replaceable>num-pres</replaceable>.</para>
            <para>The allowable values for the <replaceable>name-charset</replaceable>
            field are the following:</para>
            <enumlist>
                <enum name = "unknown"><para>Unknown</para></enum>
                <enum name = "iso8859-1"><para>ISO8859-1</para></enum>
                <enum name = "withdrawn"><para>Withdrawn</para></enum>
                <enum name = "iso8859-2"><para>ISO8859-2</para></enum>
                <enum name = "iso8859-3"><para>ISO8859-3</para></enum>
                <enum name = "iso8859-4"><para>ISO8859-4</para></enum>
                <enum name = "iso8859-5"><para>ISO8859-5</para></enum>
                <enum name = "iso8859-7"><para>ISO8859-7</para></enum>
                <enum name = "bmp"><para>ISO10646 Bmp String</para></enum>
                <enum name = "utf8"><para>ISO10646 UTF-8 String</para></enum>
            </enumlist>
            <para>The allowable values for the <replaceable>num-pres</replaceable>,
            <replaceable>name-pres</replaceable>, and <replaceable>pres</replaceable>
            fields are the following:</para>
            <enumlist>
                <enum name="allowed_not_screened">
                    <para>Presentation Allowed, Not Screened.</para>
                </enum>
                <enum name="allowed_passed_screen">
                    <para>Presentation Allowed, Passed Screen.</para>
                </enum>
                <enum name="allowed_failed_screen">
                    <para>Presentation Allowed, Failed Screen.</para>
                </enum>
                <enum name="allowed">
                    <para>Presentation Allowed, Network Number.</para>
                </enum>
                <enum name="prohib_not_screened">
                    <para>Presentation Prohibited, Not Screened.</para>
                </enum>
                <enum name="prohib_passed_screen">
                    <para>Presentation Prohibited, Passed Screen.</para>
                </enum>
                <enum name="prohib_failed_screen">
                    <para>Presentation Prohibited, Failed Screen.</para>
                </enum>
                <enum name="prohib">
                    <para>Presentation Prohibited, Network Number.</para>
                </enum>
                <enum name="unavailable">
                    <para>Number Unavailable.</para>
                </enum>
            </enumlist>
            <variablelist>
                <variable name="CALL_QUALIFIER">
                    <para>This is a special Caller ID-related variable
                    that can be used to enable sending the Call Qualifier
                    parameter in MDMF (Multiple Data Message Format)
                    Caller ID spills.</para>
                    <para>This variable is not automatically set by Asterisk.
                    You are responsible for setting it if/when needed.</para>
                    <para>Supporting Caller ID units will display the LDC
                    (Long Distance Call) indicator when they receive this parameter.</para>
                    <para>This option must be used with a channel driver
                    that allows Asterisk to generate the Caller ID spill,
                    which currently only includes <literal>chan_dahdi</literal>.</para>
                </variable>
            </variablelist>
        </description>
    </function>
    <function name="CONNECTEDLINE" language="en_US">
        <synopsis>
            Gets or sets Connected Line data on the channel.
        </synopsis>
        <syntax>
            <parameter name="datatype" required="true">
                <para>The allowable datatypes are:</para>
                <enumlist>
                    <enum name = "all" />
                    <enum name = "name" />
                    <enum name = "name-valid" />
                    <enum name = "name-charset" />
                    <enum name = "name-pres" />
                    <enum name = "num" />
                    <enum name = "num-valid" />
                    <enum name = "num-plan" />
                    <enum name = "num-pres" />
                    <enum name = "pres" />
                    <enum name = "subaddr" />
                    <enum name = "subaddr-valid" />
                    <enum name = "subaddr-type" />
                    <enum name = "subaddr-odd" />
                    <enum name = "tag" />
                    <enum name = "priv-all" />
                    <enum name = "priv-name" />
                    <enum name = "priv-name-valid" />
                    <enum name = "priv-name-charset" />
                    <enum name = "priv-name-pres" />
                    <enum name = "priv-num" />
                    <enum name = "priv-num-valid" />
                    <enum name = "priv-num-plan" />
                    <enum name = "priv-num-pres" />
                    <enum name = "priv-subaddr" />
                    <enum name = "priv-subaddr-valid" />
                    <enum name = "priv-subaddr-type" />
                    <enum name = "priv-subaddr-odd" />
                    <enum name = "priv-tag" />
                </enumlist>
            </parameter>
            <parameter name="i">
                <para>If set, this will prevent the channel from sending out protocol
                messages because of the value being set</para>
            </parameter>
        </syntax>
        <description>
            <para>Gets or sets Connected Line data on the channel.</para>
            <para>The <replaceable>pres</replaceable> field gets/sets a combined value
            for <replaceable>name-pres</replaceable> and
            <replaceable>num-pres</replaceable>.</para>
            <para>The allowable values for the <replaceable>name-charset</replaceable>
            field are the following:</para>
            <enumlist>
                <enum name = "unknown"><para>Unknown</para></enum>
                <enum name = "iso8859-1"><para>ISO8859-1</para></enum>
                <enum name = "withdrawn"><para>Withdrawn</para></enum>
                <enum name = "iso8859-2"><para>ISO8859-2</para></enum>
                <enum name = "iso8859-3"><para>ISO8859-3</para></enum>
                <enum name = "iso8859-4"><para>ISO8859-4</para></enum>
                <enum name = "iso8859-5"><para>ISO8859-5</para></enum>
                <enum name = "iso8859-7"><para>ISO8859-7</para></enum>
                <enum name = "bmp"><para>ISO10646 Bmp String</para></enum>
                <enum name = "utf8"><para>ISO10646 UTF-8 String</para></enum>
            </enumlist>
            <para>The allowable values for the <replaceable>num-pres</replaceable>,
            <replaceable>name-pres</replaceable>, and <replaceable>pres</replaceable>
            fields are the following:</para>
            <enumlist>
                <enum name="allowed_not_screened">
                    <para>Presentation Allowed, Not Screened.</para>
                </enum>
                <enum name="allowed_passed_screen">
                    <para>Presentation Allowed, Passed Screen.</para>
                </enum>
                <enum name="allowed_failed_screen">
                    <para>Presentation Allowed, Failed Screen.</para>
                </enum>
                <enum name="allowed">
                    <para>Presentation Allowed, Network Number.</para>
                </enum>
                <enum name="prohib_not_screened">
                    <para>Presentation Prohibited, Not Screened.</para>
                </enum>
                <enum name="prohib_passed_screen">
                    <para>Presentation Prohibited, Passed Screen.</para>
                </enum>
                <enum name="prohib_failed_screen">
                    <para>Presentation Prohibited, Failed Screen.</para>
                </enum>
                <enum name="prohib">
                    <para>Presentation Prohibited, Network Number.</para>
                </enum>
                <enum name="unavailable">
                    <para>Number Unavailable.</para>
                </enum>
            </enumlist>
        </description>
    </function>
    <function name="REDIRECTING" language="en_US">
        <synopsis>
            Gets or sets Redirecting data on the channel.
        </synopsis>
        <syntax>
            <parameter name="datatype" required="true">
                <para>The allowable datatypes are:</para>
                <enumlist>
                    <enum name = "orig-all" />
                    <enum name = "orig-name" />
                    <enum name = "orig-name-valid" />
                    <enum name = "orig-name-charset" />
                    <enum name = "orig-name-pres" />
                    <enum name = "orig-num" />
                    <enum name = "orig-num-valid" />
                    <enum name = "orig-num-plan" />
                    <enum name = "orig-num-pres" />
                    <enum name = "orig-pres" />
                    <enum name = "orig-subaddr" />
                    <enum name = "orig-subaddr-valid" />
                    <enum name = "orig-subaddr-type" />
                    <enum name = "orig-subaddr-odd" />
                    <enum name = "orig-tag" />
                    <enum name = "orig-reason" />
                    <enum name = "from-all" />
                    <enum name = "from-name" />
                    <enum name = "from-name-valid" />
                    <enum name = "from-name-charset" />
                    <enum name = "from-name-pres" />
                    <enum name = "from-num" />
                    <enum name = "from-num-valid" />
                    <enum name = "from-num-plan" />
                    <enum name = "from-num-pres" />
                    <enum name = "from-pres" />
                    <enum name = "from-subaddr" />
                    <enum name = "from-subaddr-valid" />
                    <enum name = "from-subaddr-type" />
                    <enum name = "from-subaddr-odd" />
                    <enum name = "from-tag" />
                    <enum name = "to-all" />
                    <enum name = "to-name" />
                    <enum name = "to-name-valid" />
                    <enum name = "to-name-charset" />
                    <enum name = "to-name-pres" />
                    <enum name = "to-num" />
                    <enum name = "to-num-valid" />
                    <enum name = "to-num-plan" />
                    <enum name = "to-num-pres" />
                    <enum name = "to-pres" />
                    <enum name = "to-subaddr" />
                    <enum name = "to-subaddr-valid" />
                    <enum name = "to-subaddr-type" />
                    <enum name = "to-subaddr-odd" />
                    <enum name = "to-tag" />
                    <enum name = "priv-orig-all" />
                    <enum name = "priv-orig-name" />
                    <enum name = "priv-orig-name-valid" />
                    <enum name = "priv-orig-name-charset" />
                    <enum name = "priv-orig-name-pres" />
                    <enum name = "priv-orig-num" />
                    <enum name = "priv-orig-num-valid" />
                    <enum name = "priv-orig-num-plan" />
                    <enum name = "priv-orig-num-pres" />
                    <enum name = "priv-orig-subaddr" />
                    <enum name = "priv-orig-subaddr-valid" />
                    <enum name = "priv-orig-subaddr-type" />
                    <enum name = "priv-orig-subaddr-odd" />
                    <enum name = "priv-orig-tag" />
                    <enum name = "priv-from-all" />
                    <enum name = "priv-from-name" />
                    <enum name = "priv-from-name-valid" />
                    <enum name = "priv-from-name-charset" />
                    <enum name = "priv-from-name-pres" />
                    <enum name = "priv-from-num" />
                    <enum name = "priv-from-num-valid" />
                    <enum name = "priv-from-num-plan" />
                    <enum name = "priv-from-num-pres" />
                    <enum name = "priv-from-subaddr" />
                    <enum name = "priv-from-subaddr-valid" />
                    <enum name = "priv-from-subaddr-type" />
                    <enum name = "priv-from-subaddr-odd" />
                    <enum name = "priv-from-tag" />
                    <enum name = "priv-to-all" />
                    <enum name = "priv-to-name" />
                    <enum name = "priv-to-name-valid" />
                    <enum name = "priv-to-name-charset" />
                    <enum name = "priv-to-name-pres" />
                    <enum name = "priv-to-num" />
                    <enum name = "priv-to-num-valid" />
                    <enum name = "priv-to-num-plan" />
                    <enum name = "priv-to-num-pres" />
                    <enum name = "priv-to-subaddr" />
                    <enum name = "priv-to-subaddr-valid" />
                    <enum name = "priv-to-subaddr-type" />
                    <enum name = "priv-to-subaddr-odd" />
                    <enum name = "priv-to-tag" />
                    <enum name = "reason" />
                    <enum name = "count" />
                </enumlist>
            </parameter>
            <parameter name="i">
                <para>If set, this will prevent the channel from sending out protocol
                messages because of the value being set</para>
            </parameter>
        </syntax>
        <description>
            <para>Gets or sets Redirecting data on the channel.</para>
            <para>The <replaceable>orig-pres</replaceable>,
            <replaceable>from-pres</replaceable> and <replaceable>to-pres</replaceable>
            fields get/set a combined value for the corresponding
            <replaceable>...-name-pres</replaceable> and <replaceable>...-num-pres</replaceable>
            fields.</para>
            <para>The recognized values for the <replaceable>reason</replaceable>
            and <replaceable>orig-reason</replaceable> fields are the following:</para>
            <enumlist>
                <enum name = "away"><para>Callee is Away</para></enum>
                <enum name = "cf_dte"><para>Call Forwarding By The Called DTE</para></enum>
                <enum name = "cfb"><para>Call Forwarding Busy</para></enum>
                <enum name = "cfnr"><para>Call Forwarding No Reply</para></enum>
                <enum name = "cfu"><para>Call Forwarding Unconditional</para></enum>
                <enum name = "deflection"><para>Call Deflection</para></enum>
                <enum name = "dnd"><para>Do Not Disturb</para></enum>
                <enum name = "follow_me"><para>Follow Me</para></enum>
                <enum name = "out_of_order"><para>Called DTE Out-Of-Order</para></enum>
                <enum name = "send_to_vm"><para>Send the call to voicemail</para></enum>
                <enum name = "time_of_day"><para>Time of Day</para></enum>
                <enum name = "unavailable"><para>Callee is Unavailable</para></enum>
                <enum name = "unknown"><para>Unknown</para></enum>
            </enumlist>
            <note><para>You can set a user defined reason string that SIP can
            send/receive instead.  The user defined reason string my need to be
            quoted depending upon SIP or the peer's requirements.  These strings
            are treated as unknown by the non-SIP channel drivers.</para></note>
            <para>The allowable values for the <replaceable>xxx-name-charset</replaceable>
            field are the following:</para>
            <enumlist>
                <enum name = "unknown"><para>Unknown</para></enum>
                <enum name = "iso8859-1"><para>ISO8859-1</para></enum>
                <enum name = "withdrawn"><para>Withdrawn</para></enum>
                <enum name = "iso8859-2"><para>ISO8859-2</para></enum>
                <enum name = "iso8859-3"><para>ISO8859-3</para></enum>
                <enum name = "iso8859-4"><para>ISO8859-4</para></enum>
                <enum name = "iso8859-5"><para>ISO8859-5</para></enum>
                <enum name = "iso8859-7"><para>ISO8859-7</para></enum>
                <enum name = "bmp"><para>ISO10646 Bmp String</para></enum>
                <enum name = "utf8"><para>ISO10646 UTF-8 String</para></enum>
            </enumlist>
        </description>
    </function>
 ***/
 
enum ID_FIELD_STATUS {
    ID_FIELD_VALID,
    ID_FIELD_INVALID,
    ID_FIELD_UNKNOWN
};
 
AST_DEFINE_APP_ARGS_TYPE(ast_party_func_args,
    AST_APP_ARG(member);    /*!< Member name */
    AST_APP_ARG(opts);      /*!< Options token */
    AST_APP_ARG(other);     /*!< Any remining unused arguments */
    );
 
AST_DEFINE_APP_ARGS_TYPE(ast_party_members,
    AST_APP_ARG(subnames[10]);  /*!< Option member subnames */
    );
 
enum CONNECTED_LINE_OPT_FLAGS {
    CONNECTED_LINE_OPT_INHIBIT = (1 << 0),
};
enum CONNECTED_LINE_OPT_ARGS {
    CONNECTED_LINE_OPT_DUMMY,   /*!< Delete this if CONNECTED_LINE ever gets an option with parameters. */
 
    /*! \note This entry _MUST_ be the last one in the enum */
    CONNECTED_LINE_OPT_ARG_ARRAY_SIZE
};
 
AST_APP_OPTIONS(connectedline_opts, BEGIN_OPTIONS
    AST_APP_OPTION('i', CONNECTED_LINE_OPT_INHIBIT),
END_OPTIONS);
 
enum REDIRECTING_OPT_FLAGS {
    REDIRECTING_OPT_INHIBIT = (1 << 0),
};
enum REDIRECTING_OPT_ARGS {
    REDIRECTING_OPT_DUMMY,  /*!< Delete this if REDIRECTING ever gets an option with parameters. */
 
    /*! \note This entry _MUST_ be the last one in the enum */
    REDIRECTING_OPT_ARG_ARRAY_SIZE
};
 
AST_APP_OPTIONS(redirecting_opts, BEGIN_OPTIONS
    AST_APP_OPTION('i', REDIRECTING_OPT_INHIBIT),
END_OPTIONS);
 
/*!
 * \internal
 * \brief Read values from the party name struct.
 * \since 1.8
 *
 * \param buf Buffer to fill with read value.
 * \param len Length of the buffer.
 * \param argc Number of party member subnames.
 * \param argv Party member subnames given.
 * \param name Party name to get values from.
 *
 * \retval ID_FIELD_VALID on success.
 * \retval ID_FIELD_UNKNOWN on unknown field name.
 */
static enum ID_FIELD_STATUS party_name_read(char *buf, size_t len, int argc, char *argv[], const struct ast_party_name *name)
{
    enum ID_FIELD_STATUS status;
 
    status = ID_FIELD_VALID;
 
    if (argc == 0) {
        /* We want the name string */
        if (name->valid && name->str) {
            ast_copy_string(buf, name->str, len);
        }
    } else if (argc == 1 && !strcasecmp("valid", argv[0])) {
        snprintf(buf, len, "%d", name->valid);
    } else if (argc == 1 && !strcasecmp("charset", argv[0])) {
        ast_copy_string(buf, ast_party_name_charset_str(name->char_set), len);
    } else if (argc == 1 && !strncasecmp("pres", argv[0], 4)) {
        /* Accept pres[entation] */
        ast_copy_string(buf, ast_named_caller_presentation(name->presentation), len);
    } else {
        status = ID_FIELD_UNKNOWN;
    }
 
    return status;
}
 
/*!
 * \internal
 * \brief Read values from the party number struct.
 * \since 1.8
 *
 * \param buf Buffer to fill with read value.
 * \param len Length of the buffer.
 * \param argc Number of party member subnames.
 * \param argv Party member subnames given.
 * \param number Party number to get values from.
 *
 * \retval ID_FIELD_VALID on success.
 * \retval ID_FIELD_UNKNOWN on unknown field name.
 */
static enum ID_FIELD_STATUS party_number_read(char *buf, size_t len, int argc, char *argv[], const struct ast_party_number *number)
{
    enum ID_FIELD_STATUS status;
 
    status = ID_FIELD_VALID;
 
    if (argc == 0) {
        /* We want the number string */
        if (number->valid && number->str) {
            ast_copy_string(buf, number->str, len);
        }
    } else if (argc == 1 && !strcasecmp("valid", argv[0])) {
        snprintf(buf, len, "%d", number->valid);
    } else if (argc == 1 && !strcasecmp("plan", argv[0])) {
        snprintf(buf, len, "%d", number->plan);
    } else if (argc == 1 && !strncasecmp("pres", argv[0], 4)) {
        /* Accept pres[entation] */
        ast_copy_string(buf, ast_named_caller_presentation(number->presentation), len);
    } else {
        status = ID_FIELD_UNKNOWN;
    }
 
    return status;
}
 
/*!
 * \internal
 * \brief Read values from the party subaddress struct.
 * \since 1.8
 *
 * \param buf Buffer to fill with read value.
 * \param len Length of the buffer.
 * \param argc Number of party member subnames.
 * \param argv Party member subnames given.
 * \param subaddress Party subaddress to get values from.
 *
 * \retval ID_FIELD_VALID on success.
 * \retval ID_FIELD_UNKNOWN on unknown field name.
 */
static enum ID_FIELD_STATUS party_subaddress_read(char *buf, size_t len, int argc, char *argv[], const struct ast_party_subaddress *subaddress)
{
    enum ID_FIELD_STATUS status;
 
    status = ID_FIELD_VALID;
 
    if (argc == 0) {
        /* We want the subaddress string */
        if (subaddress->str) {
            ast_copy_string(buf, subaddress->str, len);
        }
    } else if (argc == 1 && !strcasecmp("valid", argv[0])) {
        snprintf(buf, len, "%d", subaddress->valid);
    } else if (argc == 1 && !strcasecmp("type", argv[0])) {
        snprintf(buf, len, "%d", subaddress->type);
    } else if (argc == 1 && !strcasecmp("odd", argv[0])) {
        snprintf(buf, len, "%d", subaddress->odd_even_indicator);
    } else {
        status = ID_FIELD_UNKNOWN;
    }
 
    return status;
}
 
/*!
 * \internal
 * \brief Read values from the party id struct.
 * \since 1.8
 *
 * \param buf Buffer to fill with read value.
 * \param len Length of the buffer.
 * \param argc Number of party member subnames.
 * \param argv Party member subnames given.
 * \param id Party id to get values from.
 *
 * \retval ID_FIELD_VALID on success.
 * \retval ID_FIELD_UNKNOWN on unknown field name.
 */
static enum ID_FIELD_STATUS party_id_read(char *buf, size_t len, int argc, char *argv[], const struct ast_party_id *id)
{
    enum ID_FIELD_STATUS status;
 
    if (argc == 0) {
        /* Must have at least one subname. */
        return ID_FIELD_UNKNOWN;
    }
 
    status = ID_FIELD_VALID;
 
    if (argc == 1 && !strcasecmp("all", argv[0])) {
        snprintf(buf, len, "\"%s\" <%s>",
             S_COR(id->name.valid, id->name.str, ""),
             S_COR(id->number.valid, id->number.str, ""));
    } else if (!strcasecmp("name", argv[0])) {
        status = party_name_read(buf, len, argc - 1, argv + 1, &id->name);
    } else if (!strncasecmp("num", argv[0], 3)) {
        /* Accept num[ber] */
        status = party_number_read(buf, len, argc - 1, argv + 1, &id->number);
    } else if (!strncasecmp("subaddr", argv[0], 7)) {
        /* Accept subaddr[ess] */
        status = party_subaddress_read(buf, len, argc - 1, argv + 1, &id->subaddress);
    } else if (argc == 1 && !strcasecmp("tag", argv[0])) {
        if (id->tag) {
            ast_copy_string(buf, id->tag, len);
        }
    } else if (argc == 1 && !strcasecmp("ton", argv[0])) {
        /* ton is an alias for num-plan */
        snprintf(buf, len, "%d", id->number.plan);
    } else if (argc == 1 && !strncasecmp("pres", argv[0], 4)) {
        /*
         * Accept pres[entation]
         * This is the combined name/number presentation.
         */
        ast_copy_string(buf,
            ast_named_caller_presentation(ast_party_id_presentation(id)), len);
    } else {
        status = ID_FIELD_UNKNOWN;
    }
 
    return status;
}
 
/*!
 * \internal
 * \brief Write new values to the party name struct
 * \since 1.8
 *
 * \param name Party name struct to write values
 * \param argc Number of party member subnames.
 * \param argv Party member subnames given.
 * \param value Value to assign to the party name.
 *
 * \retval ID_FIELD_VALID on success.
 * \retval ID_FIELD_INVALID on error with field value.
 * \retval ID_FIELD_UNKNOWN on unknown field name.
 */
static enum ID_FIELD_STATUS party_name_write(struct ast_party_name *name, int argc, char *argv[], const char *value)
{
    char *val;
    enum ID_FIELD_STATUS status;
 
    status = ID_FIELD_VALID;
 
    if (argc == 0) {
        /* We are setting the name string */
        name->valid = 1;
        name->str = ast_strdup(value);
        ast_trim_blanks(name->str);
    } else if (argc == 1 && !strcasecmp("valid", argv[0])) {
        name->valid = atoi(value) ? 1 : 0;
    } else if (argc == 1 && !strcasecmp("charset", argv[0])) {
        int char_set;
 
        val = ast_strdupa(value);
        ast_trim_blanks(val);
 
        if (('0' <= val[0]) && (val[0] <= '9')) {
            char_set = atoi(val);
        } else {
            char_set = ast_party_name_charset_parse(val);
        }
 
        if (char_set < 0) {
            ast_log(LOG_ERROR,
                "Unknown name char-set '%s', value unchanged\n", val);
            status = ID_FIELD_INVALID;
        } else {
            name->char_set = char_set;
        }
    } else if (argc == 1 && !strncasecmp("pres", argv[0], 4)) {
        int pres;
 
        /* Accept pres[entation] */
        val = ast_strdupa(value);
        ast_trim_blanks(val);
 
        if (('0' <= val[0]) && (val[0] <= '9')) {
            pres = atoi(val);
        } else {
            pres = ast_parse_caller_presentation(val);
        }
 
        if (pres < 0) {
            ast_log(LOG_ERROR,
                "Unknown name presentation '%s', value unchanged\n", val);
            status = ID_FIELD_INVALID;
        } else {
            name->presentation = pres;
        }
    } else {
        status = ID_FIELD_UNKNOWN;
    }
 
    return status;
}
 
/*!
 * \internal
 * \brief Write new values to the party number struct
 * \since 1.8
 *
 * \param number Party number struct to write values
 * \param argc Number of party member subnames.
 * \param argv Party member subnames given.
 * \param value Value to assign to the party number.
 *
 * \retval ID_FIELD_VALID on success.
 * \retval ID_FIELD_INVALID on error with field value.
 * \retval ID_FIELD_UNKNOWN on unknown field name.
 */
static enum ID_FIELD_STATUS party_number_write(struct ast_party_number *number, int argc, char *argv[], const char *value)
{
    char *val;
    enum ID_FIELD_STATUS status;
 
    status = ID_FIELD_VALID;
 
    if (argc == 0) {
        /* We are setting the number string */
        number->valid = 1;
        number->str = ast_strdup(value);
        ast_trim_blanks(number->str);
    } else if (argc == 1 && !strcasecmp("valid", argv[0])) {
        number->valid = atoi(value) ? 1 : 0;
    } else if (argc == 1 && !strcasecmp("plan", argv[0])) {
        val = ast_strdupa(value);
        ast_trim_blanks(val);
 
        if (('0' <= val[0]) && (val[0] <= '9')) {
            number->plan = atoi(val);
        } else {
            ast_log(LOG_ERROR,
                "Unknown type-of-number/numbering-plan '%s', value unchanged\n", val);
            status = ID_FIELD_INVALID;
        }
    } else if (argc == 1 && !strncasecmp("pres", argv[0], 4)) {
        int pres;
 
        /* Accept pres[entation] */
        val = ast_strdupa(value);
        ast_trim_blanks(val);
 
        if (('0' <= val[0]) && (val[0] <= '9')) {
            pres = atoi(val);
        } else {
            pres = ast_parse_caller_presentation(val);
        }
 
        if (pres < 0) {
            ast_log(LOG_ERROR,
                "Unknown number presentation '%s', value unchanged\n", val);
            status = ID_FIELD_INVALID;
        } else {
            number->presentation = pres;
        }
    } else {
        status = ID_FIELD_UNKNOWN;
    }
 
    return status;
}
 
/*!
 * \internal
 * \brief Write new values to the party subaddress struct
 * \since 1.8
 *
 * \param subaddress Party subaddress struct to write values
 * \param argc Number of party member subnames.
 * \param argv Party member subnames given.
 * \param value Value to assign to the party subaddress.
 *
 * \retval ID_FIELD_VALID on success.
 * \retval ID_FIELD_INVALID on error with field value.
 * \retval ID_FIELD_UNKNOWN on unknown field name.
 */
static enum ID_FIELD_STATUS party_subaddress_write(struct ast_party_subaddress *subaddress, int argc, char *argv[], const char *value)
{
    enum ID_FIELD_STATUS status;
 
    status = ID_FIELD_VALID;
 
    if (argc == 0) {
        /* We are setting the subaddress string */
        subaddress->str = ast_strdup(value);
        ast_trim_blanks(subaddress->str);
    } else if (argc == 1 && !strcasecmp("valid", argv[0])) {
        subaddress->valid = atoi(value) ? 1 : 0;
    } else if (argc == 1 && !strcasecmp("type", argv[0])) {
        subaddress->type = atoi(value) ? 2 : 0;
    } else if (argc == 1 && !strcasecmp("odd", argv[0])) {
        subaddress->odd_even_indicator = atoi(value) ? 1 : 0;
    } else {
        status = ID_FIELD_UNKNOWN;
    }
 
    return status;
}
 
/*!
 * \internal
 * \brief Write new values to the party id struct
 * \since 1.8
 *
 * \param id Party ID struct to write values
 * \param argc Number of party member subnames.
 * \param argv Party member subnames given.
 * \param value Value to assign to the party id.
 *
 * \retval ID_FIELD_VALID on success.
 * \retval ID_FIELD_INVALID on error with field value.
 * \retval ID_FIELD_UNKNOWN on unknown field name.
 */
static enum ID_FIELD_STATUS party_id_write(struct ast_party_id *id, int argc, char *argv[], const char *value)
{
    char *val;
    enum ID_FIELD_STATUS status;
 
    if (argc == 0) {
        /* Must have at least one subname. */
        return ID_FIELD_UNKNOWN;
    }
 
    status = ID_FIELD_VALID;
 
    if (argc == 1 && !strcasecmp("all", argv[0])) {
        char name[256];
        char num[256];
 
        ast_callerid_split(value, name, sizeof(name), num, sizeof(num));
        id->name.valid = 1;
        id->name.str = ast_strdup(name);
        if (!id->name.str) {
            return ID_FIELD_INVALID;
        }
        id->number.valid = 1;
        id->number.str = ast_strdup(num);
        if (!id->number.str) {
            return ID_FIELD_INVALID;
        }
    } else if (!strcasecmp("name", argv[0])) {
        status = party_name_write(&id->name, argc - 1, argv + 1, value);
    } else if (!strncasecmp("num", argv[0], 3)) {
        /* Accept num[ber] */
        status = party_number_write(&id->number, argc - 1, argv + 1, value);
    } else if (!strncasecmp("subaddr", argv[0], 7)) {
        /* Accept subaddr[ess] */
        status = party_subaddress_write(&id->subaddress, argc - 1, argv + 1, value);
    } else if (argc == 1 && !strcasecmp("tag", argv[0])) {
        id->tag = ast_strdup(value);
        ast_trim_blanks(id->tag);
    } else if (argc == 1 && !strcasecmp("ton", argv[0])) {
        /* ton is an alias for num-plan */
        argv[0] = "plan";
        status = party_number_write(&id->number, argc, argv, value);
    } else if (argc == 1 && !strncasecmp("pres", argv[0], 4)) {
        int pres;
 
        /*
         * Accept pres[entation]
         * This is the combined name/number presentation.
         */
        val = ast_strdupa(value);
        ast_trim_blanks(val);
 
        if (('0' <= val[0]) && (val[0] <= '9')) {
            pres = atoi(val);
        } else {
            pres = ast_parse_caller_presentation(val);
        }
 
        if (pres < 0) {
            ast_log(LOG_ERROR,
                "Unknown combined presentation '%s', value unchanged\n", val);
            status = ID_FIELD_INVALID;
        } else {
            id->name.presentation = pres;
            id->number.presentation = pres;
        }
    } else {
        status = ID_FIELD_UNKNOWN;
    }
 
    return status;
}
 
/*!
 * \internal
 * \brief Read values from the caller-id information struct.
 *
 * \param chan Asterisk channel to read
 * \param cmd Not used
 * \param data Caller-id function datatype string
 * \param buf Buffer to fill with read value.
 * \param len Length of the buffer
 *
 * \retval 0 on success.
 * \retval -1 on error.
 */
static int callerid_read(struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t len)
{
    char *parms;
    struct ast_party_members member = { 0, };
    AST_DECLARE_APP_ARGS(args,
        AST_APP_ARG(member);    /*!< Member name */
        AST_APP_ARG(cid);       /*!< Optional caller id to parse instead of from the channel. */
        );
 
    /* Ensure that the buffer is empty */
    *buf = 0;
 
    if (!chan) {
        return -1;
    }
 
    parms = ast_strdupa(data);
    AST_STANDARD_APP_ARGS(args, parms);
    if (args.argc == 0) {
        /* Must have at least one argument. */
        return -1;
    }
 
    AST_NONSTANDARD_APP_ARGS(member, args.member, '-');
    if (member.argc == 0 || ARRAY_LEN(member.subnames) <= member.argc) {
        /* Too few or too many subnames */
        return -1;
    }
 
    if (args.argc == 2) {
        char name[80];
        char num[80];
 
        ast_callerid_split(args.cid, name, sizeof(name), num, sizeof(num));
 
        if (member.argc == 1 && !strcasecmp("all", member.subnames[0])) {
            snprintf(buf, len, "\"%s\" <%s>", name, num);
        } else if (member.argc == 1 && !strcasecmp("name", member.subnames[0])) {
            ast_copy_string(buf, name, len);
        } else if (member.argc == 1 && !strncasecmp("num", member.subnames[0], 3)) {
            /* Accept num[ber] */
            ast_copy_string(buf, num, len);
        } else {
            ast_log(LOG_ERROR, "Unknown callerid data type '%s'.\n", data);
        }
    } else {
        enum ID_FIELD_STATUS status;
        ast_channel_lock(chan);
 
        if (member.argc == 1 && !strcasecmp("rdnis", member.subnames[0])) {
            if (ast_channel_redirecting(chan)->from.number.valid
                && ast_channel_redirecting(chan)->from.number.str) {
                ast_copy_string(buf, ast_channel_redirecting(chan)->from.number.str, len);
            }
        } else if (!strcasecmp("dnid", member.subnames[0])) {
            if (member.argc == 1) {
                /* Setup as if user had given dnid-num instead. */
                member.argc = 2;
                member.subnames[1] = "num";
            }
            if (!strncasecmp("num", member.subnames[1], 3)) {
                /*
                 * Accept num[ber]
                 * dnid-num...
                 */
                if (member.argc == 2) {
                    /* dnid-num */
                    if (ast_channel_dialed(chan)->number.str) {
                        ast_copy_string(buf, ast_channel_dialed(chan)->number.str, len);
                    }
                } else if (member.argc == 3 && !strcasecmp("plan", member.subnames[2])) {
                    /* dnid-num-plan */
                    snprintf(buf, len, "%d", ast_channel_dialed(chan)->number.plan);
                } else {
                    ast_log(LOG_ERROR, "Unknown callerid data type '%s'.\n", data);
                }
            } else if (!strncasecmp("subaddr", member.subnames[1], 7)) {
                /*
                 * Accept subaddr[ess]
                 * dnid-subaddr...
                 */
                status = party_subaddress_read(buf, len, member.argc - 2, member.subnames + 2,
                    &ast_channel_dialed(chan)->subaddress);
                switch (status) {
                case ID_FIELD_VALID:
                case ID_FIELD_INVALID:
                    break;
                default:
                    ast_log(LOG_ERROR, "Unknown callerid data type '%s'.\n", data);
                    break;
                }
            } else {
                ast_log(LOG_ERROR, "Unknown callerid data type '%s'.\n", data);
            }
        } else if (member.argc == 1 && !strcasecmp("ani2", member.subnames[0])) {
            snprintf(buf, len, "%d", ast_channel_caller(chan)->ani2);
        } else if (!strcasecmp("ani", member.subnames[0])) {
            if (member.argc == 1) {
                /* Setup as if user had given ani-num instead. */
                member.argc = 2;
                member.subnames[1] = "num";
            }
            status = party_id_read(buf, len, member.argc - 1, member.subnames + 1,
                &ast_channel_caller(chan)->ani);
            switch (status) {
            case ID_FIELD_VALID:
            case ID_FIELD_INVALID:
                break;
            default:
                ast_log(LOG_ERROR, "Unknown callerid data type '%s'.\n", data);
                break;
            }
        } else if (!strcasecmp("priv", member.subnames[0])) {
            status = party_id_read(buf, len, member.argc - 1, member.subnames + 1,
                &ast_channel_caller(chan)->priv);
            switch (status) {
            case ID_FIELD_VALID:
            case ID_FIELD_INVALID:
                break;
            default:
                ast_log(LOG_ERROR, "Unknown callerid data type '%s'.\n", data);
                break;
            }
        } else {
            status = party_id_read(buf, len, member.argc, member.subnames, &ast_channel_caller(chan)->id);
            switch (status) {
            case ID_FIELD_VALID:
            case ID_FIELD_INVALID:
                break;
            default:
                ast_log(LOG_ERROR, "Unknown callerid data type '%s'.\n", data);
                break;
            }
        }
 
        ast_channel_unlock(chan);
    }
 
    return 0;
}
 
/*!
 * \internal
 * \brief Write new values to the caller-id information struct.
 *
 * \param chan Asterisk channel to update
 * \param cmd Not used
 * \param data Caller-id function datatype string
 * \param value Value to assign to the caller-id information struct.
 *
 * \retval 0 on success.
 * \retval -1 on error.
 */
static int callerid_write(struct ast_channel *chan, const char *cmd, char *data, const char *value)
{
    struct ast_party_caller caller;
    struct ast_party_dialed dialed;
    enum ID_FIELD_STATUS status;
    char *val;
    char *parms;
    struct ast_party_func_args args = { 0, };
    struct ast_party_members member = { 0, };
 
    if (!value || !chan) {
        return -1;
    }
 
    parms = ast_strdupa(data);
    AST_STANDARD_APP_ARGS(args, parms);
    if (args.argc == 0) {
        /* Must have at least one argument. */
        return -1;
    }
 
    AST_NONSTANDARD_APP_ARGS(member, args.member, '-');
    if (member.argc == 0 || ARRAY_LEN(member.subnames) <= member.argc) {
        /* Too few or too many subnames */
        return -1;
    }
 
    value = ast_skip_blanks(value);
 
    ast_channel_lock(chan);
    if (member.argc == 1 && !strcasecmp("rdnis", member.subnames[0])) {
        ast_channel_redirecting(chan)->from.number.valid = 1;
        ast_free(ast_channel_redirecting(chan)->from.number.str);
        ast_channel_redirecting(chan)->from.number.str = ast_strdup(value);
    } else if (!strcasecmp("dnid", member.subnames[0])) {
        ast_party_dialed_set_init(&dialed, ast_channel_dialed(chan));
        if (member.argc == 1) {
            /* Setup as if user had given dnid-num instead. */
            member.argc = 2;
            member.subnames[1] = "num";
        }
        if (!strncasecmp("num", member.subnames[1], 3)) {
            /*
             * Accept num[ber]
             * dnid-num...
             */
            if (member.argc == 2) {
                /* dnid-num */
                dialed.number.str = ast_strdup(value);
                ast_trim_blanks(dialed.number.str);
                ast_party_dialed_set(ast_channel_dialed(chan), &dialed);
            } else if (member.argc == 3 && !strcasecmp("plan", member.subnames[2])) {
                /* dnid-num-plan */
                val = ast_strdupa(value);
                ast_trim_blanks(val);
 
                if (('0' <= val[0]) && (val[0] <= '9')) {
                    ast_channel_dialed(chan)->number.plan = atoi(val);
                } else {
                    ast_log(LOG_ERROR,
                        "Unknown type-of-number/numbering-plan '%s', value unchanged\n", val);
                }
            } else {
                ast_log(LOG_ERROR, "Unknown callerid data type '%s'.\n", data);
            }
        } else if (!strncasecmp("subaddr", member.subnames[1], 7)) {
            /*
             * Accept subaddr[ess]
             * dnid-subaddr...
             */
            status = party_subaddress_write(&dialed.subaddress, member.argc - 2,
                member.subnames + 2, value);
            switch (status) {
            case ID_FIELD_VALID:
                ast_party_dialed_set(ast_channel_dialed(chan), &dialed);
                break;
            case ID_FIELD_INVALID:
                break;
            default:
                ast_log(LOG_ERROR, "Unknown callerid data type '%s'.\n", data);
                break;
            }
        } else {
            ast_log(LOG_ERROR, "Unknown callerid data type '%s'.\n", data);
        }
        ast_party_dialed_free(&dialed);
    } else if (member.argc == 1 && !strcasecmp("ani2", member.subnames[0])) {
        val = ast_strdupa(value);
        ast_trim_blanks(val);
 
        if (('0' <= val[0]) && (val[0] <= '9')) {
            ast_channel_caller(chan)->ani2 = atoi(val);
        } else {
            ast_log(LOG_ERROR, "Unknown callerid ani2 '%s', value unchanged\n", val);
        }
    } else if (!strcasecmp("ani", member.subnames[0])) {
        ast_party_caller_set_init(&caller, ast_channel_caller(chan));
        if (member.argc == 1) {
            /* Setup as if user had given ani-num instead. */
            member.argc = 2;
            member.subnames[1] = "num";
        }
        status = party_id_write(&caller.ani, member.argc - 1, member.subnames + 1, value);
        switch (status) {
        case ID_FIELD_VALID:
            ast_party_caller_set(ast_channel_caller(chan), &caller, NULL);
            break;
        case ID_FIELD_INVALID:
            break;
        default:
            ast_log(LOG_ERROR, "Unknown callerid data type '%s'.\n", data);
            break;
        }
        ast_party_caller_free(&caller);
    } else if (!strcasecmp("priv", member.subnames[0])) {
        ast_party_caller_set_init(&caller, ast_channel_caller(chan));
        status = party_id_write(&caller.priv, member.argc - 1, member.subnames + 1, value);
        switch (status) {
        case ID_FIELD_VALID:
            ast_party_caller_set(ast_channel_caller(chan), &caller, NULL);
            break;
        case ID_FIELD_INVALID:
            break;
        default:
            ast_log(LOG_ERROR, "Unknown callerid data type '%s'.\n", data);
            break;
        }
        ast_party_caller_free(&caller);
    } else {
        ast_party_caller_set_init(&caller, ast_channel_caller(chan));
        status = party_id_write(&caller.id, member.argc, member.subnames, value);
        switch (status) {
        case ID_FIELD_VALID:
            ast_channel_set_caller_event(chan, &caller, NULL);
            break;
        case ID_FIELD_INVALID:
            break;
        default:
            ast_log(LOG_ERROR, "Unknown callerid data type '%s'.\n", data);
            break;
        }
        ast_party_caller_free(&caller);
    }
    ast_channel_unlock(chan);
 
    return 0;
}
 
/*!
 * \internal
 * \brief Read values from the connected line information struct.
 *
 * \param chan Asterisk channel to read
 * \param cmd Not used
 * \param data Connected line function datatype string
 * \param buf Buffer to fill with read value.
 * \param len Length of the buffer
 *
 * \retval 0 on success.
 * \retval -1 on error.
 */
static int connectedline_read(struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t len)
{
    struct ast_party_members member = { 0, };
    char *read_what;
    enum ID_FIELD_STATUS status;
 
    /* Ensure that the buffer is empty */
    *buf = 0;
 
    if (!chan) {
        return -1;
    }
 
    read_what = ast_strdupa(data);
    AST_NONSTANDARD_APP_ARGS(member, read_what, '-');
    if (member.argc == 0 || ARRAY_LEN(member.subnames) <= member.argc) {
        /* Too few or too many subnames */
        return -1;
    }
 
    ast_channel_lock(chan);
 
    if (member.argc == 1 && !strcasecmp("source", member.subnames[0])) {
        ast_copy_string(buf, ast_connected_line_source_name(ast_channel_connected(chan)->source), len);
    } else if (!strcasecmp("priv", member.subnames[0])) {
        status = party_id_read(buf, len, member.argc - 1, member.subnames + 1,
            &ast_channel_connected(chan)->priv);
        switch (status) {
        case ID_FIELD_VALID:
        case ID_FIELD_INVALID:
            break;
        default:
            ast_log(LOG_ERROR, "Unknown connectedline data type '%s'.\n", data);
            break;
        }
    } else {
        status = party_id_read(buf, len, member.argc, member.subnames, &ast_channel_connected(chan)->id);
        switch (status) {
        case ID_FIELD_VALID:
        case ID_FIELD_INVALID:
            break;
        default:
            ast_log(LOG_ERROR, "Unknown connectedline data type '%s'.\n", data);
            break;
        }
    }
 
    ast_channel_unlock(chan);
 
    return 0;
}
 
/*!
 * \internal
 * \brief Write new values to the connected line information struct.
 *
 * \param chan Asterisk channel to update
 * \param cmd Not used
 * \param data Connected line function datatype string
 * \param value Value to assign to the connected line information struct.
 *
 * \retval 0 on success.
 * \retval -1 on error.
 */
static int connectedline_write(struct ast_channel *chan, const char *cmd, char *data, const char *value)
{
    struct ast_party_connected_line connected;
    char *val;
    char *parms;
    void (*set_it)(struct ast_channel *chan, const struct ast_party_connected_line *connected, const struct ast_set_party_connected_line *update);
    struct ast_party_func_args args = { 0, };
    struct ast_party_members member = { 0, };
    struct ast_flags opts;
    char *opt_args[CONNECTED_LINE_OPT_ARG_ARRAY_SIZE];
    enum ID_FIELD_STATUS status;
 
    if (!value || !chan) {
        return -1;
    }
 
    parms = ast_strdupa(data);
    AST_STANDARD_APP_ARGS(args, parms);
    if (args.argc == 0) {
        /* Must have at least one argument. */
        return -1;
    }
 
    AST_NONSTANDARD_APP_ARGS(member, args.member, '-');
    if (member.argc == 0 || ARRAY_LEN(member.subnames) <= member.argc) {
        /* Too few or too many subnames */
        return -1;
    }
 
    if (ast_app_parse_options(connectedline_opts, &opts, opt_args, args.opts)) {
        /* General invalid option syntax. */
        return -1;
    }
 
    /* Determine if the update indication inhibit option is present */
    if (ast_test_flag(&opts, CONNECTED_LINE_OPT_INHIBIT)) {
        set_it = ast_channel_set_connected_line;
    } else {
        set_it = ast_channel_update_connected_line;
    }
 
    ast_channel_lock(chan);
    ast_party_connected_line_set_init(&connected, ast_channel_connected(chan));
    ast_channel_unlock(chan);
 
    value = ast_skip_blanks(value);
 
    if (member.argc == 1 && !strcasecmp("source", member.subnames[0])) {
        int source;
 
        val = ast_strdupa(value);
        ast_trim_blanks(val);
 
        if (('0' <= val[0]) && (val[0] <= '9')) {
            source = atoi(val);
        } else {
            source = ast_connected_line_source_parse(val);
        }
 
        if (source < 0) {
            ast_log(LOG_ERROR, "Unknown connectedline source '%s', value unchanged\n", val);
        } else {
            connected.source = source;
            set_it(chan, &connected, NULL);
        }
    } else if (!strcasecmp("priv", member.subnames[0])) {
        status = party_id_write(&connected.priv, member.argc - 1, member.subnames + 1, value);
        switch (status) {
        case ID_FIELD_VALID:
            set_it(chan, &connected, NULL);
            break;
        case ID_FIELD_INVALID:
            break;
        default:
            ast_log(LOG_ERROR, "Unknown connectedline data type '%s'.\n", data);
            break;
        }
        ast_party_connected_line_free(&connected);
    } else {
        status = party_id_write(&connected.id, member.argc, member.subnames, value);
        switch (status) {
        case ID_FIELD_VALID:
            set_it(chan, &connected, NULL);
            break;
        case ID_FIELD_INVALID:
            break;
        default:
            ast_log(LOG_ERROR, "Unknown connectedline data type '%s'.\n", data);
            break;
        }
        ast_party_connected_line_free(&connected);
    }
 
    return 0;
}
 
/*!
 * \internal
 * \brief Read values from the redirecting information struct.
 *
 * \param chan Asterisk channel to read
 * \param cmd Not used
 * \param data Redirecting function datatype string
 * \param buf Buffer to fill with read value.
 * \param len Length of the buffer
 *
 * \retval 0 on success.
 * \retval -1 on error.
 */
static int redirecting_read(struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t len)
{
    struct ast_party_members member = { 0, };
    char *read_what;
    const struct ast_party_redirecting *ast_redirecting;
    enum ID_FIELD_STATUS status;
 
    /* Ensure that the buffer is empty */
    *buf = 0;
 
    if (!chan) {
        return -1;
    }
 
    read_what = ast_strdupa(data);
    AST_NONSTANDARD_APP_ARGS(member, read_what, '-');
    if (member.argc == 0 || ARRAY_LEN(member.subnames) <= member.argc) {
        /* Too few or too many subnames */
        return -1;
    }
 
    ast_channel_lock(chan);
 
    ast_redirecting = ast_channel_redirecting(chan);
    if (!strcasecmp("orig", member.subnames[0])) {
        if (member.argc == 2 && !strcasecmp("reason", member.subnames[1])) {
            ast_copy_string(buf,
                ast_redirecting_reason_name(&ast_redirecting->orig_reason), len);
        } else {
            status = party_id_read(buf, len, member.argc - 1, member.subnames + 1,
                &ast_redirecting->orig);
            switch (status) {
            case ID_FIELD_VALID:
            case ID_FIELD_INVALID:
                break;
            default:
                ast_log(LOG_ERROR, "Unknown redirecting data type '%s'.\n", data);
                break;
            }
        }
    } else if (!strcasecmp("from", member.subnames[0])) {
        status = party_id_read(buf, len, member.argc - 1, member.subnames + 1,
            &ast_redirecting->from);
        switch (status) {
        case ID_FIELD_VALID:
        case ID_FIELD_INVALID:
            break;
        default:
            ast_log(LOG_ERROR, "Unknown redirecting data type '%s'.\n", data);
            break;
        }
    } else if (!strcasecmp("to", member.subnames[0])) {
        status = party_id_read(buf, len, member.argc - 1, member.subnames + 1,
            &ast_redirecting->to);
        switch (status) {
        case ID_FIELD_VALID:
        case ID_FIELD_INVALID:
            break;
        default:
            ast_log(LOG_ERROR, "Unknown redirecting data type '%s'.\n", data);
            break;
        }
    } else if (member.argc == 1 && !strncasecmp("pres", member.subnames[0], 4)) {
        /*
         * Accept pres[entation]
         * This is the combined from name/number presentation.
         */
        ast_copy_string(buf,
            ast_named_caller_presentation(
                ast_party_id_presentation(&ast_redirecting->from)), len);
    } else if (member.argc == 1 && !strcasecmp("reason", member.subnames[0])) {
        ast_copy_string(buf, ast_redirecting_reason_name(&ast_redirecting->reason), len);
    } else if (member.argc == 1 && !strcasecmp("count", member.subnames[0])) {
        snprintf(buf, len, "%d", ast_redirecting->count);
    } else if (1 < member.argc && !strcasecmp("priv", member.subnames[0])) {
        if (!strcasecmp("orig", member.subnames[1])) {
            status = party_id_read(buf, len, member.argc - 2, member.subnames + 2,
                &ast_redirecting->priv_orig);
            switch (status) {
            case ID_FIELD_VALID:
            case ID_FIELD_INVALID:
                break;
            default:
                ast_log(LOG_ERROR, "Unknown redirecting data type '%s'.\n", data);
                break;
            }
        } else if (!strcasecmp("from", member.subnames[1])) {
            status = party_id_read(buf, len, member.argc - 2, member.subnames + 2,
                &ast_redirecting->priv_from);
            switch (status) {
            case ID_FIELD_VALID:
            case ID_FIELD_INVALID:
                break;
            default:
                ast_log(LOG_ERROR, "Unknown redirecting data type '%s'.\n", data);
                break;
            }
        } else if (!strcasecmp("to", member.subnames[1])) {
            status = party_id_read(buf, len, member.argc - 2, member.subnames + 2,
                &ast_redirecting->priv_to);
            switch (status) {
            case ID_FIELD_VALID:
            case ID_FIELD_INVALID:
                break;
            default:
                ast_log(LOG_ERROR, "Unknown redirecting data type '%s'.\n", data);
                break;
            }
        } else {
            ast_log(LOG_ERROR, "Unknown redirecting data type '%s'.\n", data);
        }
    } else {
        ast_log(LOG_ERROR, "Unknown redirecting data type '%s'.\n", data);
    }
 
    ast_channel_unlock(chan);
 
    return 0;
}
 
/*!
 * \internal
 * \brief Write new values to the redirecting information struct.
 *
 * \param chan Asterisk channel to update
 * \param cmd Not used
 * \param data Redirecting function datatype string
 * \param value Value to assign to the redirecting information struct.
 *
 * \retval 0 on success.
 * \retval -1 on error.
 */
static int redirecting_write(struct ast_channel *chan, const char *cmd, char *data, const char *value)
{
    struct ast_party_redirecting redirecting;
    enum ID_FIELD_STATUS status;
    char *val;
    char *parms;
    void (*set_it)(struct ast_channel *chan, const struct ast_party_redirecting *redirecting, const struct ast_set_party_redirecting *update);
    struct ast_party_func_args args = { 0, };
    struct ast_party_members member = { 0, };
    struct ast_flags opts;
    char *opt_args[REDIRECTING_OPT_ARG_ARRAY_SIZE];
 
    if (!value || !chan) {
        return -1;
    }
 
    parms = ast_strdupa(data);
    AST_STANDARD_APP_ARGS(args, parms);
    if (args.argc == 0) {
        /* Must have at least one argument. */
        return -1;
    }
 
    AST_NONSTANDARD_APP_ARGS(member, args.member, '-');
    if (member.argc == 0 || ARRAY_LEN(member.subnames) <= member.argc) {
        /* Too few or too many subnames */
        return -1;
    }
 
    if (ast_app_parse_options(redirecting_opts, &opts, opt_args, args.opts)) {
        /* General invalid option syntax. */
        return -1;
    }
 
    /* Determine if the update indication inhibit option is present */
    if (ast_test_flag(&opts, REDIRECTING_OPT_INHIBIT)) {
        set_it = ast_channel_set_redirecting;
    } else {
        set_it = ast_channel_update_redirecting;
    }
 
    ast_channel_lock(chan);
    ast_party_redirecting_set_init(&redirecting, ast_channel_redirecting(chan));
    ast_channel_unlock(chan);
 
    value = ast_skip_blanks(value);
 
    if (!strcasecmp("orig", member.subnames[0])) {
        if (member.argc == 2 && !strcasecmp("reason", member.subnames[1])) {
            int reason;
 
            val = ast_strdupa(value);
            ast_trim_blanks(val);
 
            if (('0' <= val[0]) && (val[0] <= '9')) {
                reason = atoi(val);
            } else {
                reason = ast_redirecting_reason_parse(val);
            }
 
            if (reason < 0) {
            /* The argument passed into the function does not correspond to a pre-defined
             * reason, so we can just set the reason string to what was given and set the
             * code to be unknown
             */
                ast_log(LOG_WARNING, "Unknown redirecting reason '%s', defaulting to unknown\n", val);
                redirecting.orig_reason.code = AST_REDIRECTING_REASON_UNKNOWN;
                redirecting.orig_reason.str = val;
                set_it(chan, &redirecting, NULL);
            } else {
                redirecting.orig_reason.code = reason;
                redirecting.orig_reason.str = "";
                set_it(chan, &redirecting, NULL);
            }
        } else {
            status = party_id_write(&redirecting.orig, member.argc - 1, member.subnames + 1,
                value);
            switch (status) {
            case ID_FIELD_VALID:
                set_it(chan, &redirecting, NULL);
                break;
            case ID_FIELD_INVALID:
                break;
            default:
                ast_log(LOG_ERROR, "Unknown redirecting data type '%s'.\n", data);
                break;
            }
            ast_party_redirecting_free(&redirecting);
        }
    } else if (!strcasecmp("from", member.subnames[0])) {
        status = party_id_write(&redirecting.from, member.argc - 1, member.subnames + 1,
            value);
        switch (status) {
        case ID_FIELD_VALID:
            set_it(chan, &redirecting, NULL);
            break;
        case ID_FIELD_INVALID:
            break;
        default:
            ast_log(LOG_ERROR, "Unknown redirecting data type '%s'.\n", data);
            break;
        }
        ast_party_redirecting_free(&redirecting);
    } else if (!strcasecmp("to", member.subnames[0])) {
        status = party_id_write(&redirecting.to, member.argc - 1, member.subnames + 1, value);
        switch (status) {
        case ID_FIELD_VALID:
            set_it(chan, &redirecting, NULL);
            break;
        case ID_FIELD_INVALID:
            break;
        default:
            ast_log(LOG_ERROR, "Unknown redirecting data type '%s'.\n", data);
            break;
        }
        ast_party_redirecting_free(&redirecting);
    } else if (member.argc == 1 && !strncasecmp("pres", member.subnames[0], 4)) {
        int pres;
 
        val = ast_strdupa(value);
        ast_trim_blanks(val);
 
        if (('0' <= val[0]) && (val[0] <= '9')) {
            pres = atoi(val);
        } else {
            pres = ast_parse_caller_presentation(val);
        }
 
        if (pres < 0) {
            ast_log(LOG_ERROR,
                "Unknown redirecting combined presentation '%s', value unchanged\n", val);
        } else {
            redirecting.from.name.presentation = pres;
            redirecting.from.number.presentation = pres;
            redirecting.to.name.presentation = pres;
            redirecting.to.number.presentation = pres;
            set_it(chan, &redirecting, NULL);
        }
    } else if (member.argc == 1 && !strcasecmp("reason", member.subnames[0])) {
        int reason;
 
        val = ast_strdupa(value);
        ast_trim_blanks(val);
 
        if (('0' <= val[0]) && (val[0] <= '9')) {
            reason = atoi(val);
        } else {
            reason = ast_redirecting_reason_parse(val);
        }
 
        if (reason < 0) {
            /* The argument passed into the function does not correspond to a pre-defined
             * reason, so we can just set the reason string to what was given and set the
             * code to be unknown
             */
            ast_log(LOG_WARNING, "Unknown redirecting reason '%s', defaulting to unknown\n", val);
            redirecting.reason.code = AST_REDIRECTING_REASON_UNKNOWN;
            redirecting.reason.str = val;
            set_it(chan, &redirecting, NULL);
        } else {
            redirecting.reason.code = reason;
            redirecting.reason.str = "";
            set_it(chan, &redirecting, NULL);
        }
    } else if (member.argc == 1 && !strcasecmp("count", member.subnames[0])) {
        val = ast_strdupa(value);
        ast_trim_blanks(val);
 
        if (('0' <= val[0]) && (val[0] <= '9')) {
            redirecting.count = atoi(val);
            set_it(chan, &redirecting, NULL);
        } else {
            ast_log(LOG_ERROR, "Unknown redirecting count '%s', value unchanged\n", val);
        }
    } else if (1 < member.argc && !strcasecmp("priv", member.subnames[0])) {
        if (!strcasecmp("orig", member.subnames[1])) {
            status = party_id_write(&redirecting.priv_orig, member.argc - 2, member.subnames + 2,
                value);
            switch (status) {
            case ID_FIELD_VALID:
                set_it(chan, &redirecting, NULL);
                break;
            case ID_FIELD_INVALID:
                break;
            default:
                ast_log(LOG_ERROR, "Unknown redirecting data type '%s'.\n", data);
                break;
            }
            ast_party_redirecting_free(&redirecting);
        } else if (!strcasecmp("from", member.subnames[1])) {
            status = party_id_write(&redirecting.priv_from, member.argc - 2, member.subnames + 2,
                value);
            switch (status) {
            case ID_FIELD_VALID:
                set_it(chan, &redirecting, NULL);
                break;
            case ID_FIELD_INVALID:
                break;
            default:
                ast_log(LOG_ERROR, "Unknown redirecting data type '%s'.\n", data);
                break;
            }
            ast_party_redirecting_free(&redirecting);
        } else if (!strcasecmp("to", member.subnames[1])) {
            status = party_id_write(&redirecting.priv_to, member.argc - 2, member.subnames + 2, value);
            switch (status) {
            case ID_FIELD_VALID:
                set_it(chan, &redirecting, NULL);
                break;
            case ID_FIELD_INVALID:
                break;
            default:
                ast_log(LOG_ERROR, "Unknown redirecting data type '%s'.\n", data);
                break;
            }
            ast_party_redirecting_free(&redirecting);
        } else {
            ast_log(LOG_ERROR, "Unknown redirecting data type '%s'.\n", data);
        }
    } else {
        ast_log(LOG_ERROR, "Unknown redirecting data type '%s'.\n", data);
    }
 
    return 0;
}
 
static struct ast_custom_function callerid_function = {
    .name = "CALLERID",
    .read = callerid_read,
    .read_max = 256,
    .write = callerid_write,
};
 
static struct ast_custom_function connectedline_function = {
    .name = "CONNECTEDLINE",
    .read = connectedline_read,
    .write = connectedline_write,
};
 
static struct ast_custom_function redirecting_function = {
    .name = "REDIRECTING",
    .read = redirecting_read,
    .write = redirecting_write,
};
 
/*!
 * \internal
 * \brief Unload the function module
 *
 * \retval 0 on success.
 * \retval -1 on error.
 */
static int unload_module(void)
{
    ast_custom_function_unregister(&callerid_function);
    ast_custom_function_unregister(&connectedline_function);
    ast_custom_function_unregister(&redirecting_function);
    return 0;
}
 
/*!
 * \internal
 * \brief Load and initialize the function module.
 *
 * \retval AST_MODULE_LOAD_SUCCESS on success.
 * \retval AST_MODULE_LOAD_DECLINE on error.
 */
static int load_module(void)
{
    int res;
 
    res = ast_custom_function_register(&callerid_function);
    res |= ast_custom_function_register(&connectedline_function);
    res |= ast_custom_function_register(&redirecting_function);
 
    if (res) {
        unload_module();
        return AST_MODULE_LOAD_DECLINE;
    }
 
    return AST_MODULE_LOAD_SUCCESS;
}
 
/* Do not wrap the following line. */
AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Party ID related dialplan functions (Caller-ID, Connected-line, Redirecting)");