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>
 </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
 */
 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
 */
 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)");