func_callcompletion.c

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/*
 * Asterisk -- An open source telephony toolkit.
 *
 * Copyright (C) 1999 - 2010, Digium, Inc.
 *
 * Mark Michelson <mmichelson@digium.com>
 *
 * 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 Call Completion Supplementary Services implementation
 * \author Mark Michelson <mmichelson@digium.com>
 */
 
/*** MODULEINFO
    <support_level>core</support_level>
 ***/
 
#include "asterisk.h"
 
#include "asterisk/module.h"
#include "asterisk/channel.h"
#include "asterisk/ccss.h"
#include "asterisk/pbx.h"
 
/*** DOCUMENTATION
    <function name="CALLCOMPLETION" language="en_US">
        <synopsis>
            Get or set a call completion configuration parameter for a channel.
        </synopsis>
        <syntax>
            <parameter name="option" required="true">
                <para>The allowable options are:</para>
                <enumlist>
                    <enum name="cc_agent_policy" />
                    <enum name="cc_monitor_policy" />
                    <enum name="cc_offer_timer" />
                    <enum name="ccnr_available_timer" />
                    <enum name="ccbs_available_timer" />
                    <enum name="cc_recall_timer" />
                    <enum name="cc_max_agents" />
                    <enum name="cc_max_monitors" />
                    <enum name="cc_agent_dialstring" />
                </enumlist>
            </parameter>
        </syntax>
        <description>
            <para>The CALLCOMPLETION function can be used to get or set a call
            completion configuration parameter for a channel. Note that setting
            a configuration parameter will only change the parameter for the
            duration of the call.
 
            For more information see <filename>doc/AST.pdf</filename>.
            For more information on call completion parameters, see <filename>configs/ccss.conf.sample</filename>.</para>
        </description>
    </function>
 ***/
 
static int acf_cc_read(struct ast_channel *chan, const char *name, char *data,
        char *buf, size_t buf_len)
{
    struct ast_cc_config_params *cc_params;
    int res;
 
    if (!chan) {
        ast_log(LOG_WARNING, "No channel was provided to %s function.\n", name);
        return -1;
    }
 
    ast_channel_lock(chan);
    if (!(cc_params = ast_channel_get_cc_config_params(chan))) {
        ast_channel_unlock(chan);
        return -1;
    }
 
    res = ast_cc_get_param(cc_params, data, buf, buf_len);
    ast_channel_unlock(chan);
    return res;
}
 
static int acf_cc_write(struct ast_channel *chan, const char *cmd, char *data,
        const char *value)
{
    struct ast_cc_config_params *cc_params;
    int res;
 
    if (!chan) {
        ast_log(LOG_WARNING, "No channel was provided to %s function.\n", cmd);
        return -1;
    }
 
    ast_channel_lock(chan);
    if (!(cc_params = ast_channel_get_cc_config_params(chan))) {
        ast_channel_unlock(chan);
        return -1;
    }
 
    res = ast_cc_set_param(cc_params, data, value);
    ast_channel_unlock(chan);
    return res;
}
 
static struct ast_custom_function cc_function = {
    .name = "CALLCOMPLETION",
    .read = acf_cc_read,
    .write = acf_cc_write,
};
 
static int unload_module(void)
{
    return ast_custom_function_unregister(&cc_function);
}
 
static int load_module(void)
{
    return ast_custom_function_register(&cc_function) == 0 ? AST_MODULE_LOAD_SUCCESS : AST_MODULE_LOAD_DECLINE;
}
 
AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_DEFAULT, "Call Control Configuration Function",
    .support_level = AST_MODULE_SUPPORT_CORE,
    .load = load_module,
    .unload = unload_module,
    .requires = "ccss",
);