app_page.c File Reference

page() - Paging application More...

#include "asterisk.h"
#include "asterisk/channel.h"
#include "asterisk/pbx.h"
#include "asterisk/module.h"
#include "asterisk/file.h"
#include "asterisk/app.h"
#include "asterisk/chanvars.h"
#include "asterisk/utils.h"
#include "asterisk/devicestate.h"
#include "asterisk/dial.h"

Include dependency graph for app_page.c:

Go to the source code of this file.

Data Structures
struct	page_options

Macros
#define	PAGE_BEEP   "beep"

Enumerations
enum	{ OPT_ARG_ANNOUNCE = 0 , OPT_ARG_PREDIAL_CALLEE = 1 , OPT_ARG_PREDIAL_CALLER = 2 , OPT_ARG_ARRAY_SIZE = 3 }
enum	page_opt_flags {   PAGE_DUPLEX = (1 << 0) , PAGE_QUIET = (1 << 1) , PAGE_RECORD = (1 << 2) , PAGE_SKIP = (1 << 3) ,   PAGE_IGNORE_FORWARDS = (1 << 4) , PAGE_ANNOUNCE = (1 << 5) , PAGE_NOCALLERANNOUNCE = (1 << 6) , PAGE_PREDIAL_CALLEE = (1 << 7) ,   PAGE_PREDIAL_CALLER = (1 << 8) }

Functions
static void	__reg_module (void)
static void	__unreg_module (void)
struct ast_module *	AST_MODULE_SELF_SYM (void)
static int	load_module (void)
static int	page_exec (struct ast_channel *chan, const char *data)
static void	page_state_callback (struct ast_dial *dial)
static void	setup_profile_bridge (struct ast_channel *chan, struct page_options *options)
static void	setup_profile_caller (struct ast_channel *chan, struct page_options *options)
static void	setup_profile_paged (struct ast_channel *chan, struct page_options *options)
static int	unload_module (void)

Variables
static struct ast_module_info	__mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_DEFAULT , .description = "Page Multiple Phones" , .key = "This paragraph is copyright (c) 2006 by Digium, Inc. \In order for your module to load, it must return this \key via a function called \"key\". Any code which \includes this paragraph must be licensed under the GNU \General Public License version 2 or later (at your \option). In addition to Digium's general reservations \of rights, Digium expressly reserves the right to \allow other parties to license this paragraph under \different terms. Any use of Digium, Inc. trademarks or \logos (including \"Asterisk\" or \"Digium\") without \express written permission of Digium, Inc. is prohibited.\n" , .buildopt_sum = AST_BUILDOPT_SUM, .support_level = AST_MODULE_SUPPORT_CORE, .load = load_module, .unload = unload_module, .requires = "app_confbridge", }
static const char *const	app_page = "Page"
static const struct ast_module_info *	ast_module_info = &__mod_info
static const struct ast_app_option	page_opts [128] = { [ 'b' ] = { .flag = PAGE_PREDIAL_CALLEE , .arg_index = OPT_ARG_PREDIAL_CALLEE + 1 }, [ 'B' ] = { .flag = PAGE_PREDIAL_CALLER , .arg_index = OPT_ARG_PREDIAL_CALLER + 1 }, [ 'd' ] = { .flag = PAGE_DUPLEX }, [ 'q' ] = { .flag = PAGE_QUIET }, [ 'r' ] = { .flag = PAGE_RECORD }, [ 's' ] = { .flag = PAGE_SKIP }, [ 'i' ] = { .flag = PAGE_IGNORE_FORWARDS }, [ 'A' ] = { .flag = PAGE_ANNOUNCE , .arg_index = OPT_ARG_ANNOUNCE + 1 }, [ 'n' ] = { .flag = PAGE_NOCALLERANNOUNCE }, }

Detailed Description

page() - Paging application

Author

Mark Spencer marks.nosp@m.ter@.nosp@m.digiu.nosp@m.m.co.nosp@m.m

Definition in file app_page.c.

Macro Definition Documentation

PAGE_BEEP

#define PAGE_BEEP   "beep"

Definition at line 166 of file app_page.c.

Enumeration Type Documentation

anonymous enum

anonymous enum

Enumerator
OPT_ARG_ANNOUNCE
OPT_ARG_PREDIAL_CALLEE
OPT_ARG_PREDIAL_CALLER
OPT_ARG_ARRAY_SIZE

Definition at line 147 of file app_page.c.

     {
    OPT_ARG_ANNOUNCE = 0,
    OPT_ARG_PREDIAL_CALLEE = 1,
    OPT_ARG_PREDIAL_CALLER = 2,
    OPT_ARG_ARRAY_SIZE = 3,
};

page_opt_flags

enum page_opt_flags

Enumerator
PAGE_DUPLEX
PAGE_QUIET
PAGE_RECORD
PAGE_SKIP
PAGE_IGNORE_FORWARDS
PAGE_ANNOUNCE
PAGE_NOCALLERANNOUNCE
PAGE_PREDIAL_CALLEE
PAGE_PREDIAL_CALLER

Definition at line 135 of file app_page.c.

                    {
    PAGE_DUPLEX = (1 << 0),
    PAGE_QUIET = (1 << 1),
    PAGE_RECORD = (1 << 2),
    PAGE_SKIP = (1 << 3),
    PAGE_IGNORE_FORWARDS = (1 << 4),
    PAGE_ANNOUNCE = (1 << 5),
    PAGE_NOCALLERANNOUNCE = (1 << 6),
    PAGE_PREDIAL_CALLEE = (1 << 7),
    PAGE_PREDIAL_CALLER = (1 << 8),
};

Function Documentation

__reg_module()

static void __reg_module ( void  )

static

Definition at line 456 of file app_page.c.

__unreg_module()

static void __unreg_module ( void  )

static

Definition at line 456 of file app_page.c.

AST_MODULE_SELF_SYM()

struct ast_module * AST_MODULE_SELF_SYM

(

void

)

Definition at line 456 of file app_page.c.

load_module()

static int load_module ( void  )

static

Definition at line 446 of file app_page.c.

{
    return ast_register_application_xml(app_page, page_exec);
}

References app_page, ast_register_application_xml, and page_exec().

page_exec()

static int page_exec ( struct ast_channel *  chan, const char *  data  )

static

Definition at line 247 of file app_page.c.

{
    char *tech;
    char *resource;
    char *tmp;
    char *predial_callee = NULL;
    char confbridgeopts[128];
    char originator[AST_CHANNEL_NAME];
    struct page_options options = { { 0, }, { 0, } };
    unsigned int confid = ast_random();
    struct ast_app *app;
    int res = 0;
    int pos = 0;
    int i = 0;
    struct ast_dial **dial_list;
    unsigned int num_dials;
    int timeout = 0;
    char *parse;
 
    AST_DECLARE_APP_ARGS(args,
        AST_APP_ARG(devices);
        AST_APP_ARG(options);
        AST_APP_ARG(timeout);
    );
 
    if (!(app = pbx_findapp("ConfBridge"))) {
        ast_log(LOG_WARNING, "There is no ConfBridge application available!\n");
        return -1;
    };
 
    parse = ast_strdupa(data ?: "");
 
    AST_STANDARD_APP_ARGS(args, parse);
 
    ast_copy_string(originator, ast_channel_name(chan), sizeof(originator));
    if ((tmp = strchr(originator, '-'))) {
        *tmp = '\0';
    }
 
    if (!ast_strlen_zero(args.options)) {
        ast_app_parse_options(page_opts, &options.flags, options.opts, args.options);
    }
 
    if (!ast_strlen_zero(args.timeout)) {
        timeout = atoi(args.timeout);
    }
 
    snprintf(confbridgeopts, sizeof(confbridgeopts), "ConfBridge,%u", confid);
 
    /* Count number of extensions in list by number of ampersands + 1 */
    num_dials = 1;
    tmp = args.devices ?: "";
    while (*tmp) {
        if (*tmp == '&') {
            num_dials++;
        }
        tmp++;
    }
 
    if (!(dial_list = ast_calloc(num_dials, sizeof(struct ast_dial *)))) {
        ast_log(LOG_ERROR, "Can't allocate %ld bytes for dial list\n", (long)(sizeof(struct ast_dial *) * num_dials));
        return -1;
    }
 
    /* PREDIAL: Preprocess any callee gosub arguments. */
    if (ast_test_flag(&options.flags, PAGE_PREDIAL_CALLEE)
        && !ast_strlen_zero(options.opts[OPT_ARG_PREDIAL_CALLEE])) {
        ast_replace_subargument_delimiter(options.opts[OPT_ARG_PREDIAL_CALLEE]);
        predial_callee =
            (char *) ast_app_expand_sub_args(chan, options.opts[OPT_ARG_PREDIAL_CALLEE]);
    }
 
    /* PREDIAL: Run gosub on the caller's channel */
    if (ast_test_flag(&options.flags, PAGE_PREDIAL_CALLER)
        && !ast_strlen_zero(options.opts[OPT_ARG_PREDIAL_CALLER])) {
        ast_replace_subargument_delimiter(options.opts[OPT_ARG_PREDIAL_CALLER]);
        ast_app_exec_sub(NULL, chan, options.opts[OPT_ARG_PREDIAL_CALLER], 0);
    }
 
    /* Go through parsing/calling each device */
    while ((tech = strsep(&args.devices, "&"))) {
        int state = 0;
        struct ast_dial *dial = NULL;
 
        tech = ast_strip(tech);
        if (ast_strlen_zero(tech)) {
            /* No tech/resource in this position. */
            continue;
        }
 
        /* don't call the originating device */
        if (!strcasecmp(tech, originator)) {
            continue;
        }
 
        /* If no resource is available, continue on */
        if (!(resource = strchr(tech, '/'))) {
            ast_log(LOG_WARNING, "Incomplete destination: '%s' supplied.\n", tech);
            continue;
        }
 
        /* Ensure device is not in use if skip option is enabled */
        if (ast_test_flag(&options.flags, PAGE_SKIP)) {
            state = ast_device_state(tech);
            if (state == AST_DEVICE_UNKNOWN) {
                ast_verb(3, "Destination '%s' has device state '%s'. Paging anyway.\n",
                    tech, ast_devstate2str(state));
            } else if (state != AST_DEVICE_NOT_INUSE) {
                ast_verb(3, "Destination '%s' has device state '%s'.\n",
                    tech, ast_devstate2str(state));
                continue;
            }
        }
 
        *resource++ = '\0';
 
        /* Create a dialing structure */
        if (!(dial = ast_dial_create())) {
            ast_log(LOG_WARNING, "Failed to create dialing structure.\n");
            continue;
        }
 
        /* Append technology and resource */
        if (ast_dial_append(dial, tech, resource, NULL) == -1) {
            ast_log(LOG_ERROR, "Failed to add %s/%s to outbound dial\n", tech, resource);
            ast_dial_destroy(dial);
            continue;
        }
 
        /* Set ANSWER_EXEC as global option */
        ast_dial_option_global_enable(dial, AST_DIAL_OPTION_ANSWER_EXEC, confbridgeopts);
 
        if (predial_callee) {
            ast_dial_option_global_enable(dial, AST_DIAL_OPTION_PREDIAL, predial_callee);
        }
 
        if (timeout) {
            ast_dial_set_global_timeout(dial, timeout * 1000);
        }
 
        if (ast_test_flag(&options.flags, PAGE_IGNORE_FORWARDS)) {
            ast_dial_option_global_enable(dial, AST_DIAL_OPTION_DISABLE_CALL_FORWARDING, NULL);
        }
 
        ast_dial_set_state_callback(dial, &page_state_callback);
        ast_dial_set_user_data(dial, &options);
 
        /* Run this dial in async mode */
        ast_dial_run(dial, chan, 1);
 
        /* Put in our dialing array */
        dial_list[pos++] = dial;
    }
 
    ast_free(predial_callee);
 
    if (!ast_test_flag(&options.flags, PAGE_QUIET)) {
        if (!ast_fileexists(PAGE_BEEP, NULL, NULL)) {
            ast_log(LOG_WARNING, "Missing required sound file: '" PAGE_BEEP "'\n");
        } else {
            res = ast_streamfile(chan, PAGE_BEEP, ast_channel_language(chan));
            if (!res) {
                res = ast_waitstream(chan, "");
            }
        }
    }
 
    if (!res) {
        setup_profile_bridge(chan, &options);
        setup_profile_caller(chan, &options);
 
        snprintf(confbridgeopts, sizeof(confbridgeopts), "%u", confid);
        pbx_exec(chan, app, confbridgeopts);
    }
 
    /* Go through each dial attempt cancelling, joining, and destroying */
    for (i = 0; i < pos; i++) {
        struct ast_dial *dial = dial_list[i];
 
        /* We have to wait for the async thread to exit as it's possible ConfBridge won't throw them out immediately */
        ast_dial_join(dial);
 
        /* Hangup all channels */
        ast_dial_hangup(dial);
 
        /* Destroy dialing structure */
        ast_dial_destroy(dial);
    }
 
    ast_free(dial_list);
 
    return -1;
}

References app, args, AST_APP_ARG, ast_app_exec_sub(), ast_app_expand_sub_args(), ast_app_parse_options(), ast_calloc, ast_channel_language(), AST_CHANNEL_NAME, ast_channel_name(), ast_copy_string(), AST_DECLARE_APP_ARGS, AST_DEVICE_NOT_INUSE, AST_DEVICE_UNKNOWN, ast_devstate2str(), ast_dial_append(), ast_dial_create(), ast_dial_destroy(), ast_dial_hangup(), ast_dial_join(), AST_DIAL_OPTION_ANSWER_EXEC, AST_DIAL_OPTION_DISABLE_CALL_FORWARDING, ast_dial_option_global_enable(), AST_DIAL_OPTION_PREDIAL, ast_dial_run(), ast_dial_set_global_timeout(), ast_dial_set_state_callback(), ast_dial_set_user_data(), ast_fileexists(), ast_free, ast_log, ast_random(), ast_replace_subargument_delimiter(), AST_STANDARD_APP_ARGS, ast_strdupa, ast_streamfile(), ast_strip(), ast_strlen_zero(), ast_test_flag, ast_verb, ast_waitstream(), LOG_ERROR, LOG_WARNING, NULL, OPT_ARG_PREDIAL_CALLEE, OPT_ARG_PREDIAL_CALLER, options, PAGE_BEEP, PAGE_IGNORE_FORWARDS, page_opts, PAGE_PREDIAL_CALLEE, PAGE_PREDIAL_CALLER, PAGE_QUIET, PAGE_SKIP, page_state_callback(), pbx_exec(), pbx_findapp(), setup_profile_bridge(), setup_profile_caller(), strsep(), and ast_dial::timeout.

Referenced by load_module().

page_state_callback()

static void page_state_callback ( struct ast_dial *  dial )

static

Definition at line 232 of file app_page.c.

{
    struct ast_channel *chan;
    struct page_options *options;
 
    if (ast_dial_state(dial) != AST_DIAL_RESULT_ANSWERED ||
        !(chan = ast_dial_answered(dial)) ||
        !(options = ast_dial_get_user_data(dial))) {
        return;
    }
 
    setup_profile_bridge(chan, options);
    setup_profile_paged(chan, options);
}

References ast_dial_answered(), ast_dial_get_user_data(), AST_DIAL_RESULT_ANSWERED, ast_dial_state(), options, setup_profile_bridge(), and setup_profile_paged().

Referenced by page_exec().

setup_profile_bridge()

static void setup_profile_bridge ( struct ast_channel *  chan, struct page_options *  options  )

static

Definition at line 181 of file app_page.c.

{
    /* Use default_bridge as a starting point */
    ast_func_write(chan, "CONFBRIDGE(bridge,template)", "");
    if (ast_test_flag(&options->flags, PAGE_RECORD)) {
        ast_func_write(chan, "CONFBRIDGE(bridge,record_conference)", "yes");
    }
}

References ast_func_write(), ast_test_flag, options, and PAGE_RECORD.

Referenced by page_exec(), and page_state_callback().

setup_profile_caller()

static void setup_profile_caller ( struct ast_channel *  chan, struct page_options *  options  )

static

Definition at line 219 of file app_page.c.

{
    /* Use default_user as a starting point if not already setup. */
    ast_func_write(chan, "CONFBRIDGE(user,template)", "");
    ast_func_write(chan, "CONFBRIDGE(user,quiet)", "yes");
    ast_func_write(chan, "CONFBRIDGE(user,marked)", "yes");
    if (!ast_test_flag(&options->flags, PAGE_NOCALLERANNOUNCE)
        && ast_test_flag(&options->flags, PAGE_ANNOUNCE)
        && !ast_strlen_zero(options->opts[OPT_ARG_ANNOUNCE])) {
        ast_func_write(chan, "CONFBRIDGE(user,announcement)", options->opts[OPT_ARG_ANNOUNCE]);
    }
}

References ast_func_write(), ast_strlen_zero(), ast_test_flag, OPT_ARG_ANNOUNCE, options, PAGE_ANNOUNCE, and PAGE_NOCALLERANNOUNCE.

Referenced by page_exec().

setup_profile_paged()

static void setup_profile_paged ( struct ast_channel *  chan, struct page_options *  options  )

static

Definition at line 197 of file app_page.c.

{
    /* Use default_user as a starting point */
    ast_func_write(chan, "CONFBRIDGE(user,template)", "");
    ast_func_write(chan, "CONFBRIDGE(user,quiet)", "yes");
    ast_func_write(chan, "CONFBRIDGE(user,end_marked)", "yes");
    if (!ast_test_flag(&options->flags, PAGE_DUPLEX)) {
        ast_func_write(chan, "CONFBRIDGE(user,startmuted)", "yes");
    }
    if (ast_test_flag(&options->flags, PAGE_ANNOUNCE)
        && !ast_strlen_zero(options->opts[OPT_ARG_ANNOUNCE])) {
        ast_func_write(chan, "CONFBRIDGE(user,announcement)", options->opts[OPT_ARG_ANNOUNCE]);
    }
}

References ast_func_write(), ast_strlen_zero(), ast_test_flag, OPT_ARG_ANNOUNCE, options, PAGE_ANNOUNCE, and PAGE_DUPLEX.

Referenced by page_state_callback().

unload_module()

static int unload_module ( void  )

static

Definition at line 441 of file app_page.c.

{
    return ast_unregister_application(app_page);
}

References app_page, and ast_unregister_application().

Variable Documentation

__mod_info

struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_DEFAULT , .description = "Page Multiple Phones" , .key = "This paragraph is copyright (c) 2006 by Digium, Inc. \In order for your module to load, it must return this \key via a function called \"key\". Any code which \includes this paragraph must be licensed under the GNU \General Public License version 2 or later (at your \option). In addition to Digium's general reservations \of rights, Digium expressly reserves the right to \allow other parties to license this paragraph under \different terms. Any use of Digium, Inc. trademarks or \logos (including \"Asterisk\" or \"Digium\") without \express written permission of Digium, Inc. is prohibited.\n" , .buildopt_sum = AST_BUILDOPT_SUM, .support_level = AST_MODULE_SUPPORT_CORE, .load = load_module, .unload = unload_module, .requires = "app_confbridge", }

static

Definition at line 456 of file app_page.c.

app_page

const char* const app_page = "Page"

static

Definition at line 133 of file app_page.c.

Referenced by load_module(), and unload_module().

ast_module_info

const struct ast_module_info* ast_module_info = &__mod_info

static

Definition at line 456 of file app_page.c.

page_opts

const struct ast_app_option page_opts[128] = { [ 'b' ] = { .flag = PAGE_PREDIAL_CALLEE , .arg_index = OPT_ARG_PREDIAL_CALLEE + 1 }, [ 'B' ] = { .flag = PAGE_PREDIAL_CALLER , .arg_index = OPT_ARG_PREDIAL_CALLER + 1 }, [ 'd' ] = { .flag = PAGE_DUPLEX }, [ 'q' ] = { .flag = PAGE_QUIET }, [ 'r' ] = { .flag = PAGE_RECORD }, [ 's' ] = { .flag = PAGE_SKIP }, [ 'i' ] = { .flag = PAGE_IGNORE_FORWARDS }, [ 'A' ] = { .flag = PAGE_ANNOUNCE , .arg_index = OPT_ARG_ANNOUNCE + 1 }, [ 'n' ] = { .flag = PAGE_NOCALLERANNOUNCE }, }

static

Definition at line 164 of file app_page.c.

Referenced by page_exec().