func_vmcount.c

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/*
 * Asterisk -- An open source telephony toolkit.
 *
 * Copyright (c) 2006 Tilghman Lesher.  All rights reserved.
 *
 * Tilghman Lesher <asterisk-vmcount-func@the-tilghman.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 VMCOUNT dialplan function
 *
 * \author Tilghman Lesher <asterisk-vmcount-func@the-tilghman.com>
 *
 * \ingroup functions
 */
 
/*** MODULEINFO
    <support_level>core</support_level>
 ***/
 
#include "asterisk.h"
 
#include <dirent.h>
 
#include "asterisk/file.h"
#include "asterisk/channel.h"
#include "asterisk/pbx.h"
#include "asterisk/module.h"
#include "asterisk/lock.h"
#include "asterisk/utils.h"
#include "asterisk/app.h"
 
/*** DOCUMENTATION
    <function name="VMCOUNT" language="en_US">
        <synopsis>
            Count the voicemails in a specified mailbox or mailboxes.
        </synopsis>
        <syntax>
            <parameter name="vmbox" required="true" argsep="&amp;">
                <para>A mailbox or list of mailboxes</para>
            </parameter>
            <parameter name="folder" required="false">
                <para>If not specified, defaults to <literal>INBOX</literal></para>
            </parameter>
        </syntax>
        <description>
            <para>Count the number of voicemails in a specified mailbox, you could also specify
            the mailbox <replaceable>folder</replaceable>.</para>
            <example title="Mailbox folder count">
            exten => s,1,Set(foo=${VMCOUNT(125@default)})
            </example>
            <para>An ampersand-separated list of mailboxes may be specified to count voicemails in
            multiple mailboxes. If a folder is specified, this will apply to all mailboxes specified.</para>
                        <example title="Multiple mailbox inbox count">
                        same => n,NoOp(${VMCOUNT(1234@default&amp;1235@default&amp;1236@default,INBOX)})
                        </example>
        </description>
    </function>
 ***/
 
static int acf_vmcount_exec(struct ast_channel *chan, const char *cmd, char *argsstr, char *buf, size_t len)
{
    int total = 0;
    char *mailbox = NULL;
    AST_DECLARE_APP_ARGS(args,
        AST_APP_ARG(vmbox);
        AST_APP_ARG(folder);
    );
 
    buf[0] = '\0';
 
    if (ast_strlen_zero(argsstr))
        return -1;
 
    AST_STANDARD_APP_ARGS(args, argsstr);
 
    if (ast_strlen_zero(args.vmbox)) {
        return -1;
    }
 
    if (ast_strlen_zero(args.folder)) {
        args.folder = "INBOX";
    }
 
    while ((mailbox = strsep(&args.vmbox, "&"))) {
        int c;
        if (ast_strlen_zero(mailbox)) {
            continue;
        }
        c = ast_app_messagecount(mailbox, args.folder);
        total += (c > 0 ? c : 0);
    }
    snprintf(buf, len, "%d", total);
 
    return 0;
}
 
static struct ast_custom_function acf_vmcount = {
    .name = "VMCOUNT",
    .read = acf_vmcount_exec,
    .read_max = 12,
};
 
static int unload_module(void)
{
    return ast_custom_function_unregister(&acf_vmcount);
}
 
static int load_module(void)
{
    return ast_custom_function_register(&acf_vmcount);
}
 
AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Indicator for whether a voice mailbox has messages in a given folder.");