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asterisk/main/indications.c

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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 2002, Pauline Middelink
* Copyright (C) 2009, 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 Indication Tone Handling
*
* \author Pauline Middelink <middelink@polyware.nl>
* \author Russell Bryant <russell@digium.com>
*/
#include "asterisk.h"
ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
#include <math.h>
#include "asterisk/lock.h"
#include "asterisk/linkedlists.h"
#include "asterisk/indications.h"
#include "asterisk/frame.h"
#include "asterisk/channel.h"
#include "asterisk/utils.h"
#include "asterisk/cli.h"
#include "asterisk/module.h"
#include "asterisk/astobj2.h"
#include "asterisk/data.h"
#include "asterisk/_private.h" /* _init(), _reload() */
#define DATA_EXPORT_TONE_ZONE(MEMBER) \
MEMBER(ast_tone_zone, country, AST_DATA_STRING) \
MEMBER(ast_tone_zone, description, AST_DATA_STRING) \
MEMBER(ast_tone_zone, nrringcadence, AST_DATA_UNSIGNED_INTEGER)
AST_DATA_STRUCTURE(ast_tone_zone, DATA_EXPORT_TONE_ZONE);
#define DATA_EXPORT_TONE_ZONE_SOUND(MEMBER) \
MEMBER(ast_tone_zone_sound, name, AST_DATA_STRING) \
MEMBER(ast_tone_zone_sound, data, AST_DATA_STRING)
AST_DATA_STRUCTURE(ast_tone_zone_sound, DATA_EXPORT_TONE_ZONE_SOUND);
/* Globals */
static const char config[] = "indications.conf";
static const int midi_tohz[128] = {
8, 8, 9, 9, 10, 10, 11, 12, 12, 13,
14, 15, 16, 17, 18, 19, 20, 21, 23, 24,
25, 27, 29, 30, 32, 34, 36, 38, 41, 43,
46, 48, 51, 55, 58, 61, 65, 69, 73, 77,
82, 87, 92, 97, 103, 110, 116, 123, 130, 138,
146, 155, 164, 174, 184, 195, 207, 220, 233, 246,
261, 277, 293, 311, 329, 349, 369, 391, 415, 440,
466, 493, 523, 554, 587, 622, 659, 698, 739, 783,
830, 880, 932, 987, 1046, 1108, 1174, 1244, 1318, 1396,
1479, 1567, 1661, 1760, 1864, 1975, 2093, 2217, 2349, 2489,
2637, 2793, 2959, 3135, 3322, 3520, 3729, 3951, 4186, 4434,
4698, 4978, 5274, 5587, 5919, 6271, 6644, 7040, 7458, 7902,
8372, 8869, 9397, 9956, 10548, 11175, 11839, 12543
};
static struct ao2_container *ast_tone_zones;
#define NUM_TONE_ZONE_BUCKETS 53
/*!
* \note Access to this is protected by locking the ast_tone_zones container
*/
static struct ast_tone_zone *default_tone_zone;
struct playtones_item {
int fac1;
int init_v2_1;
int init_v3_1;
int fac2;
int init_v2_2;
int init_v3_2;
int modulate;
int duration;
};
struct playtones_def {
int vol;
int reppos;
int nitems;
int interruptible;
struct playtones_item *items;
};
struct playtones_state {
int vol;
int v1_1;
int v2_1;
int v3_1;
int v1_2;
int v2_2;
int v3_2;
int reppos;
int nitems;
struct playtones_item *items;
int npos;
int oldnpos;
int pos;
struct ast_format origwfmt;
struct ast_frame f;
unsigned char offset[AST_FRIENDLY_OFFSET];
short data[4000];
};
static void playtones_release(struct ast_channel *chan, void *params)
{
struct playtones_state *ps = params;
if (chan) {
ast_set_write_format(chan, &ps->origwfmt);
}
if (ps->items) {
ast_free(ps->items);
ps->items = NULL;
}
ast_free(ps);
}
static void *playtones_alloc(struct ast_channel *chan, void *params)
{
struct playtones_def *pd = params;
struct playtones_state *ps = NULL;
if (!(ps = ast_calloc(1, sizeof(*ps)))) {
return NULL;
}
ast_format_copy(&ps->origwfmt, &chan->writeformat);
if (ast_set_write_format_by_id(chan, AST_FORMAT_SLINEAR)) {
ast_log(LOG_WARNING, "Unable to set '%s' to signed linear format (write)\n", chan->name);
playtones_release(NULL, ps);
ps = NULL;
} else {
ps->vol = pd->vol;
ps->reppos = pd->reppos;
ps->nitems = pd->nitems;
ps->items = pd->items;
ps->oldnpos = -1;
}
/* Let interrupts interrupt :) */
if (pd->interruptible) {
ast_set_flag(chan, AST_FLAG_WRITE_INT);
} else {
ast_clear_flag(chan, AST_FLAG_WRITE_INT);
}
return ps;
}
static int playtones_generator(struct ast_channel *chan, void *data, int len, int samples)
{
struct playtones_state *ps = data;
struct playtones_item *pi;
int x;
/* we need to prepare a frame with 16 * timelen samples as we're
* generating SLIN audio */
len = samples * 2;
if (len > sizeof(ps->data) / 2 - 1) {
ast_log(LOG_WARNING, "Can't generate that much data!\n");
return -1;
}
memset(&ps->f, 0, sizeof(ps->f));
pi = &ps->items[ps->npos];
if (ps->oldnpos != ps->npos) {
/* Load new parameters */
ps->v1_1 = 0;
ps->v2_1 = pi->init_v2_1;
ps->v3_1 = pi->init_v3_1;
ps->v1_2 = 0;
ps->v2_2 = pi->init_v2_2;
ps->v3_2 = pi->init_v3_2;
ps->oldnpos = ps->npos;
}
for (x = 0; x < samples; x++) {
ps->v1_1 = ps->v2_1;
ps->v2_1 = ps->v3_1;
ps->v3_1 = (pi->fac1 * ps->v2_1 >> 15) - ps->v1_1;
ps->v1_2 = ps->v2_2;
ps->v2_2 = ps->v3_2;
ps->v3_2 = (pi->fac2 * ps->v2_2 >> 15) - ps->v1_2;
if (pi->modulate) {
int p;
p = ps->v3_2 - 32768;
if (p < 0) {
p = -p;
}
p = ((p * 9) / 10) + 1;
ps->data[x] = (ps->v3_1 * p) >> 15;
} else {
ps->data[x] = ps->v3_1 + ps->v3_2;
}
}
ps->f.frametype = AST_FRAME_VOICE;
ast_format_set(&ps->f.subclass.format, AST_FORMAT_SLINEAR, 0);
ps->f.datalen = len;
ps->f.samples = samples;
ps->f.offset = AST_FRIENDLY_OFFSET;
ps->f.data.ptr = ps->data;
if (ast_write(chan, &ps->f)) {
return -1;
}
ps->pos += x;
if (pi->duration && ps->pos >= pi->duration * 8) { /* item finished? */
ps->pos = 0; /* start new item */
ps->npos++;
if (ps->npos >= ps->nitems) { /* last item? */
if (ps->reppos == -1) { /* repeat set? */
return -1;
}
ps->npos = ps->reppos; /* redo from top */
}
}
return 0;
}
static struct ast_generator playtones = {
.alloc = playtones_alloc,
.release = playtones_release,
.generate = playtones_generator,
};
int ast_tone_zone_part_parse(const char *s, struct ast_tone_zone_part *tone_data)
{
if (sscanf(s, "%30u+%30u/%30u", &tone_data->freq1, &tone_data->freq2,
&tone_data->time) == 3) {
/* f1+f2/time format */
} else if (sscanf(s, "%30u+%30u", &tone_data->freq1, &tone_data->freq2) == 2) {
/* f1+f2 format */
tone_data->time = 0;
} else if (sscanf(s, "%30u*%30u/%30u", &tone_data->freq1, &tone_data->freq2,
&tone_data->time) == 3) {
/* f1*f2/time format */
tone_data->modulate = 1;
} else if (sscanf(s, "%30u*%30u", &tone_data->freq1, &tone_data->freq2) == 2) {
/* f1*f2 format */
tone_data->time = 0;
tone_data->modulate = 1;
} else if (sscanf(s, "%30u/%30u", &tone_data->freq1, &tone_data->time) == 2) {
/* f1/time format */
tone_data->freq2 = 0;
} else if (sscanf(s, "%30u", &tone_data->freq1) == 1) {
/* f1 format */
tone_data->freq2 = 0;
tone_data->time = 0;
} else if (sscanf(s, "M%30u+M%30u/%30u", &tone_data->freq1, &tone_data->freq2,
&tone_data->time) == 3) {
/* Mf1+Mf2/time format */
tone_data->midinote = 1;
} else if (sscanf(s, "M%30u+M%30u", &tone_data->freq1, &tone_data->freq2) == 2) {
/* Mf1+Mf2 format */
tone_data->time = 0;
tone_data->midinote = 1;
} else if (sscanf(s, "M%30u*M%30u/%30u", &tone_data->freq1, &tone_data->freq2,
&tone_data->time) == 3) {
/* Mf1*Mf2/time format */
tone_data->modulate = 1;
tone_data->midinote = 1;
} else if (sscanf(s, "M%30u*M%30u", &tone_data->freq1, &tone_data->freq2) == 2) {
/* Mf1*Mf2 format */
tone_data->time = 0;
tone_data->modulate = 1;
tone_data->midinote = 1;
} else if (sscanf(s, "M%30u/%30u", &tone_data->freq1, &tone_data->time) == 2) {
/* Mf1/time format */
tone_data->freq2 = -1;
tone_data->midinote = 1;
} else if (sscanf(s, "M%30u", &tone_data->freq1) == 1) {
/* Mf1 format */
tone_data->freq2 = -1;
tone_data->time = 0;
tone_data->midinote = 1;
} else {
return -1;
}
return 0;
}
int ast_playtones_start(struct ast_channel *chan, int vol, const char *playlst, int interruptible)
{
char *s, *data = ast_strdupa(playlst);
struct playtones_def d = { vol, -1, 0, 1, NULL };
char *stringp;
char *separator;
static const float sample_rate = 8000.0;
static const float max_sample_val = 32768.0;
if (vol < 1) {
d.vol = 7219; /* Default to -8db */
}
d.interruptible = interruptible;
stringp = data;
/* check if the data is separated with '|' or with ',' by default */
if (strchr(stringp,'|')) {
separator = "|";
} else {
separator = ",";
}
while ((s = strsep(&stringp, separator)) && !ast_strlen_zero(s)) {
struct ast_tone_zone_part tone_data = {
.time = 0,
};
s = ast_strip(s);
if (s[0]=='!') {
s++;
} else if (d.reppos == -1) {
d.reppos = d.nitems;
}
if (ast_tone_zone_part_parse(s, &tone_data)) {
ast_log(LOG_ERROR, "Failed to parse tone part '%s'\n", s);
continue;
}
if (tone_data.midinote) {
/* midi notes must be between 0 and 127 */
if (tone_data.freq1 >= 0 && tone_data.freq1 <= 127) {
tone_data.freq1 = midi_tohz[tone_data.freq1];
} else {
tone_data.freq1 = 0;
}
if (tone_data.freq2 >= 0 && tone_data.freq2 <= 127) {
tone_data.freq2 = midi_tohz[tone_data.freq2];
} else {
tone_data.freq2 = 0;
}
}
if (!(d.items = ast_realloc(d.items, (d.nitems + 1) * sizeof(*d.items)))) {
return -1;
}
d.items[d.nitems].fac1 = 2.0 * cos(2.0 * M_PI * (tone_data.freq1 / sample_rate)) * max_sample_val;
d.items[d.nitems].init_v2_1 = sin(-4.0 * M_PI * (tone_data.freq1 / sample_rate)) * d.vol;
d.items[d.nitems].init_v3_1 = sin(-2.0 * M_PI * (tone_data.freq1 / sample_rate)) * d.vol;
d.items[d.nitems].fac2 = 2.0 * cos(2.0 * M_PI * (tone_data.freq2 / sample_rate)) * max_sample_val;
d.items[d.nitems].init_v2_2 = sin(-4.0 * M_PI * (tone_data.freq2 / sample_rate)) * d.vol;
d.items[d.nitems].init_v3_2 = sin(-2.0 * M_PI * (tone_data.freq2 / sample_rate)) * d.vol;
d.items[d.nitems].duration = tone_data.time;
d.items[d.nitems].modulate = tone_data.modulate;
d.nitems++;
}
if (!d.nitems) {
ast_log(LOG_ERROR, "No valid tone parts\n");
return -1;
}
if (ast_activate_generator(chan, &playtones, &d)) {
ast_free(d.items);
return -1;
}
return 0;
}
void ast_playtones_stop(struct ast_channel *chan)
{
ast_deactivate_generator(chan);
}
int ast_tone_zone_count(void)
{
return ao2_container_count(ast_tone_zones);
}
struct ao2_iterator ast_tone_zone_iterator_init(void)
{
return ao2_iterator_init(ast_tone_zones, 0);
}
/*! \brief Set global indication country
If no country is specified or we are unable to find the zone, then return not found */
static int ast_set_indication_country(const char *country)
{
struct ast_tone_zone *zone = NULL;
if (ast_strlen_zero(country) || !(zone = ast_get_indication_zone(country))) {
return -1;
}
ast_verb(3, "Setting default indication country to '%s'\n", country);
ao2_lock(ast_tone_zones);
if (default_tone_zone) {
default_tone_zone = ast_tone_zone_unref(default_tone_zone);
}
default_tone_zone = ast_tone_zone_ref(zone);
ao2_unlock(ast_tone_zones);
zone = ast_tone_zone_unref(zone);
return 0;
}
/*! \brief locate ast_tone_zone, given the country. if country == NULL, use the default country */
struct ast_tone_zone *ast_get_indication_zone(const char *country)
{
struct ast_tone_zone *tz = NULL;
struct ast_tone_zone zone_arg = {
.nrringcadence = 0,
};
if (ast_strlen_zero(country)) {
ao2_lock(ast_tone_zones);
if (default_tone_zone) {
tz = ast_tone_zone_ref(default_tone_zone);
}
ao2_unlock(ast_tone_zones);
return tz;
}
ast_copy_string(zone_arg.country, country, sizeof(zone_arg.country));
return ao2_find(ast_tone_zones, &zone_arg, OBJ_POINTER);
}
struct ast_tone_zone_sound *ast_get_indication_tone(const struct ast_tone_zone *_zone, const char *indication)
{
struct ast_tone_zone_sound *ts = NULL;
/* _zone is const to the users of the API */
struct ast_tone_zone *zone = (struct ast_tone_zone *) _zone;
/* If no zone is specified, use the default */
if (!zone) {
ao2_lock(ast_tone_zones);
if (default_tone_zone) {
zone = ast_tone_zone_ref(default_tone_zone);
}
ao2_unlock(ast_tone_zones);
if (!zone) {
return NULL;
}
}
ast_tone_zone_lock(zone);
/* Look through list of tones in the zone searching for the right one */
AST_LIST_TRAVERSE(&zone->tones, ts, entry) {
if (!strcasecmp(ts->name, indication)) {
/* Increase ref count for the reference we will return */
ts = ast_tone_zone_sound_ref(ts);
break;
}
}
ast_tone_zone_unlock(zone);
return ts;
}
static void ast_tone_zone_sound_destructor(void *obj)
{
struct ast_tone_zone_sound *ts = obj;
/* Deconstify the 'const char *'s so the compiler doesn't complain. (but it's safe) */
if (ts->name) {
ast_free((char *) ts->name);
ts->name = NULL;
}
if (ts->data) {
ast_free((char *) ts->data);
ts->data = NULL;
}
}
/*! \brief deallocate the passed tone zone */
static void ast_tone_zone_destructor(void *obj)
{
struct ast_tone_zone *zone = obj;
struct ast_tone_zone_sound *current;
while ((current = AST_LIST_REMOVE_HEAD(&zone->tones, entry))) {
current = ast_tone_zone_sound_unref(current);
}
if (zone->ringcadence) {
ast_free(zone->ringcadence);
zone->ringcadence = NULL;
}
}
/*! \brief add a new country, if country exists, it will be replaced. */
static int ast_register_indication_country(struct ast_tone_zone *zone)
{
ao2_lock(ast_tone_zones);
if (!default_tone_zone) {
default_tone_zone = ast_tone_zone_ref(zone);
}
ao2_unlock(ast_tone_zones);
ao2_link(ast_tone_zones, zone);
ast_verb(3, "Registered indication country '%s'\n", zone->country);
return 0;
}
/*! \brief remove an existing country and all its indications, country must exist. */
static int ast_unregister_indication_country(const char *country)
{
struct ast_tone_zone *tz = NULL;
struct ast_tone_zone zone_arg = {
.nrringcadence = 0,
};
ast_copy_string(zone_arg.country, country, sizeof(zone_arg.country));
if (!(tz = ao2_find(ast_tone_zones, &zone_arg, OBJ_POINTER))) {
return -1;
}
ao2_lock(ast_tone_zones);
if (default_tone_zone == tz) {
ast_tone_zone_unref(default_tone_zone);
/* Get a new default, punt to the first one we find */
default_tone_zone = ao2_callback(ast_tone_zones, 0, NULL, NULL);
}
ao2_unlock(ast_tone_zones);
ao2_unlink(ast_tone_zones, tz);
tz = ast_tone_zone_unref(tz);
return 0;
}
/*!
* \note called with the tone zone locked
*/
static int ast_register_indication(struct ast_tone_zone *zone, const char *indication,
const char *tonelist)
{
struct ast_tone_zone_sound *ts;
if (ast_strlen_zero(indication) || ast_strlen_zero(tonelist)) {
return -1;
}
AST_LIST_TRAVERSE_SAFE_BEGIN(&zone->tones, ts, entry) {
if (!strcasecmp(indication, ts->name)) {
AST_LIST_REMOVE_CURRENT(entry);
ts = ast_tone_zone_sound_unref(ts);
break;
}
}
AST_LIST_TRAVERSE_SAFE_END;
if (!(ts = ao2_alloc(sizeof(*ts), ast_tone_zone_sound_destructor))) {
return -1;
}
if (!(ts->name = ast_strdup(indication)) || !(ts->data = ast_strdup(tonelist))) {
ts = ast_tone_zone_sound_unref(ts);
return -1;
}
AST_LIST_INSERT_TAIL(&zone->tones, ts, entry); /* Inherit reference */
return 0;
}
/*! \brief remove an existing country's indication. Both country and indication must exist */
static int ast_unregister_indication(struct ast_tone_zone *zone, const char *indication)
{
struct ast_tone_zone_sound *ts;
int res = -1;
ast_tone_zone_lock(zone);
AST_LIST_TRAVERSE_SAFE_BEGIN(&zone->tones, ts, entry) {
if (!strcasecmp(indication, ts->name)) {
AST_LIST_REMOVE_CURRENT(entry);
ts = ast_tone_zone_sound_unref(ts);
res = 0;
break;
}
}
AST_LIST_TRAVERSE_SAFE_END;
ast_tone_zone_unlock(zone);
return res;
}
static struct ast_tone_zone *ast_tone_zone_alloc(void)
{
return ao2_alloc(sizeof(struct ast_tone_zone), ast_tone_zone_destructor);
}
static char *complete_country(struct ast_cli_args *a)
{
char *res = NULL;
struct ao2_iterator i;
int which = 0;
size_t wordlen;
struct ast_tone_zone *tz;
wordlen = strlen(a->word);
i = ao2_iterator_init(ast_tone_zones, 0);
while ((tz = ao2_iterator_next(&i))) {
if (!strncasecmp(a->word, tz->country, wordlen) && ++which > a->n) {
res = ast_strdup(tz->country);
}
tz = ast_tone_zone_unref(tz);
if (res) {
break;
}
}
return res;
}
static char *handle_cli_indication_add(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
struct ast_tone_zone *tz;
int created_country = 0;
char *res = CLI_SUCCESS;
switch (cmd) {
case CLI_INIT:
e->command = "indication add";
e->usage =
"Usage: indication add <country> <indication> \"<tonelist>\"\n"
" Add the given indication to the country.\n";
return NULL;
case CLI_GENERATE:
if (a->pos == 2) {
return complete_country(a);
} else {
return NULL;
}
}
if (a->argc != 5) {
return CLI_SHOWUSAGE;
}
if (!(tz = ast_get_indication_zone(a->argv[2]))) {
/* country does not exist, create it */
ast_log(LOG_NOTICE, "Country '%s' does not exist, creating it.\n", a->argv[2]);
if (!(tz = ast_tone_zone_alloc())) {
return CLI_FAILURE;
}
ast_copy_string(tz->country, a->argv[2], sizeof(tz->country));
if (ast_register_indication_country(tz)) {
ast_log(LOG_WARNING, "Unable to register new country\n");
tz = ast_tone_zone_unref(tz);
return CLI_FAILURE;
}
created_country = 1;
}
ast_tone_zone_lock(tz);
if (ast_register_indication(tz, a->argv[3], a->argv[4])) {
ast_log(LOG_WARNING, "Unable to register indication %s/%s\n", a->argv[2], a->argv[3]);
if (created_country) {
ast_unregister_indication_country(a->argv[2]);
}
res = CLI_FAILURE;
}
ast_tone_zone_unlock(tz);
tz = ast_tone_zone_unref(tz);
return res;
}
static char *complete_indications(struct ast_cli_args *a)
{
char *res = NULL;
int which = 0;
size_t wordlen;
struct ast_tone_zone_sound *ts;
struct ast_tone_zone *tz, tmp_tz = {
.nrringcadence = 0,
};
ast_copy_string(tmp_tz.country, a->argv[a->pos - 1], sizeof(tmp_tz.country));
if (!(tz = ao2_find(ast_tone_zones, &tmp_tz, OBJ_POINTER))) {
return NULL;
}
wordlen = strlen(a->word);
ast_tone_zone_lock(tz);
AST_LIST_TRAVERSE(&tz->tones, ts, entry) {
if (!strncasecmp(a->word, ts->name, wordlen) && ++which > a->n) {
res = ast_strdup(ts->name);
break;
}
}
ast_tone_zone_unlock(tz);
tz = ast_tone_zone_unref(tz);
return res;
}
static char *handle_cli_indication_remove(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
struct ast_tone_zone *tz;
char *res = CLI_SUCCESS;
switch (cmd) {
case CLI_INIT:
e->command = "indication remove";
e->usage =
"Usage: indication remove <country> [indication]\n"
" Remove the given indication from the country.\n";
return NULL;
case CLI_GENERATE:
if (a->pos == 2) {
return complete_country(a);
} else if (a->pos == 3) {
return complete_indications(a);
}
}
if (a->argc != 3 && a->argc != 4) {
return CLI_SHOWUSAGE;
}
if (a->argc == 3) {
/* remove entire country */
if (ast_unregister_indication_country(a->argv[2])) {
ast_log(LOG_WARNING, "Unable to unregister indication country %s\n", a->argv[2]);
return CLI_FAILURE;
}
return CLI_SUCCESS;
}
if (!(tz = ast_get_indication_zone(a->argv[2]))) {
ast_log(LOG_WARNING, "Unable to unregister indication %s/%s, country does not exists\n", a->argv[2], a->argv[3]);
return CLI_FAILURE;
}
if (ast_unregister_indication(tz, a->argv[3])) {
ast_log(LOG_WARNING, "Unable to unregister indication %s/%s\n", a->argv[2], a->argv[3]);
res = CLI_FAILURE;
}
tz = ast_tone_zone_unref(tz);
return res;
}
static char *handle_cli_indication_show(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
struct ast_tone_zone *tz = NULL;
struct ast_str *buf;
int found_country = 0;
int i;
switch (cmd) {
case CLI_INIT:
e->command = "indication show";
e->usage =
"Usage: indication show [<country> ...]\n"
" Display either a condensed summary of all countries and indications, or a\n"
" more verbose list of indications for the specified countries.\n";
return NULL;
case CLI_GENERATE:
return complete_country(a);
}
if (a->argc == 2) {
struct ao2_iterator iter;
/* no arguments, show a list of countries */
ast_cli(a->fd, "Country Description\n");
ast_cli(a->fd, "===========================\n");
iter = ast_tone_zone_iterator_init();
while ((tz = ao2_iterator_next(&iter))) {
ast_tone_zone_lock(tz);
ast_cli(a->fd, "%-7.7s %s\n", tz->country, tz->description);
ast_tone_zone_unlock(tz);
tz = ast_tone_zone_unref(tz);
}
return CLI_SUCCESS;
}
buf = ast_str_alloca(256);
for (i = 2; i < a->argc; i++) {
struct ast_tone_zone zone_arg = {
.nrringcadence = 0,
};
struct ast_tone_zone_sound *ts;
int j;
ast_copy_string(zone_arg.country, a->argv[i], sizeof(zone_arg.country));
if (!(tz = ao2_find(ast_tone_zones, &zone_arg, OBJ_POINTER))) {
continue;
}
if (!found_country) {
found_country = 1;
ast_cli(a->fd, "Country Indication PlayList\n");
ast_cli(a->fd, "=====================================\n");
}
ast_tone_zone_lock(tz);
ast_str_set(&buf, 0, "%-7.7s %-15.15s ", tz->country, "<ringcadence>");
for (j = 0; j < tz->nrringcadence; j++) {
ast_str_append(&buf, 0, "%d%s", tz->ringcadence[j],
(j == tz->nrringcadence - 1) ? "" : ",");
}
ast_str_append(&buf, 0, "\n");
ast_cli(a->fd, "%s", buf->str);
AST_LIST_TRAVERSE(&tz->tones, ts, entry) {
ast_cli(a->fd, "%-7.7s %-15.15s %s\n", tz->country, ts->name, ts->data);
}
ast_tone_zone_unlock(tz);
tz = ast_tone_zone_unref(tz);
}
if (!found_country) {
ast_cli(a->fd, "No countries matched your criteria.\n");
}
return CLI_SUCCESS;
}
static int is_valid_tone_zone(struct ast_tone_zone *zone)
{
int res;
ast_tone_zone_lock(zone);
res = (!ast_strlen_zero(zone->description) && !AST_LIST_EMPTY(&zone->tones));
ast_tone_zone_unlock(zone);
return res;
}
/*!\brief
*
* \note This is called with the tone zone locked.
*/
static void store_tone_zone_ring_cadence(struct ast_tone_zone *zone, const char *val)
{
char buf[1024];
char *ring, *c = buf;
ast_copy_string(buf, val, sizeof(buf));
while ((ring = strsep(&c, ","))) {
int *tmp, val;
ring = ast_strip(ring);
if (!isdigit(ring[0]) || (val = atoi(ring)) == -1) {
ast_log(LOG_WARNING, "Invalid ringcadence given '%s'.\n", ring);
continue;
}
if (!(tmp = ast_realloc(zone->ringcadence, (zone->nrringcadence + 1) * sizeof(int)))) {
return;
}
zone->ringcadence = tmp;
tmp[zone->nrringcadence] = val;
zone->nrringcadence++;
}
}
static void store_config_tone_zone(struct ast_tone_zone *zone, const char *var,
const char *value)
{
CV_START(var, value);
CV_STR("description", zone->description);
CV_F("ringcadence", store_tone_zone_ring_cadence(zone, value));
CV_F("ringcadance", store_tone_zone_ring_cadence(zone, value));
ast_register_indication(zone, var, value);
CV_END;
}
static void reset_tone_zone(struct ast_tone_zone *zone)
{
ast_tone_zone_lock(zone);
zone->killme = 0;
if (zone->nrringcadence) {
zone->nrringcadence = 0;
ast_free(zone->ringcadence);
zone->ringcadence = NULL;
}
ast_tone_zone_unlock(zone);
}
static int parse_tone_zone(struct ast_config *cfg, const char *country)
{
struct ast_variable *v;
struct ast_tone_zone *zone;
struct ast_tone_zone tmp_zone = {
.nrringcadence = 0,
};
int allocd = 0;
ast_copy_string(tmp_zone.country, country, sizeof(tmp_zone.country));
if ((zone = ao2_find(ast_tone_zones, &tmp_zone, OBJ_POINTER))) {
reset_tone_zone(zone);
} else if ((zone = ast_tone_zone_alloc())) {
allocd = 1;
ast_copy_string(zone->country, country, sizeof(zone->country));
} else {
return -1;
}
ast_tone_zone_lock(zone);
for (v = ast_variable_browse(cfg, country); v; v = v->next) {
store_config_tone_zone(zone, v->name, v->value);
}
ast_tone_zone_unlock(zone);
if (allocd) {
if (!is_valid_tone_zone(zone)) {
ast_log(LOG_WARNING, "Indication country '%s' is invalid\n", country);
} else if (ast_register_indication_country(zone)) {
ast_log(LOG_WARNING, "Unable to register indication country '%s'.\n",
country);
}
}
zone = ast_tone_zone_unref(zone);
return 0;
}
/*! \brief
* Mark the zone and its tones before parsing configuration. We will use this
* to know what to remove after configuration is parsed.
*/
static int tone_zone_mark(void *obj, void *arg, int flags)
{
struct ast_tone_zone *zone = obj;
struct ast_tone_zone_sound *s;
ast_tone_zone_lock(zone);
zone->killme = 1;
AST_LIST_TRAVERSE(&zone->tones, s, entry) {
s->killme = 1;
}
ast_tone_zone_unlock(zone);
return 0;
}
/*! \brief
* Prune tones no longer in the configuration, and have the tone zone unlinked
* if it is no longer in the configuration at all.
*/
static int prune_tone_zone(void *obj, void *arg, int flags)
{
struct ast_tone_zone *zone = obj;
struct ast_tone_zone_sound *s;
ast_tone_zone_lock(zone);
AST_LIST_TRAVERSE_SAFE_BEGIN(&zone->tones, s, entry) {
if (s->killme) {
AST_LIST_REMOVE_CURRENT(entry);
s = ast_tone_zone_sound_unref(s);
}
}
AST_LIST_TRAVERSE_SAFE_END;
ast_tone_zone_unlock(zone);
return zone->killme ? CMP_MATCH : 0;
}
/*! \brief load indications module */
static int load_indications(int reload)
{
struct ast_config *cfg;
const char *cxt = NULL;
const char *country = NULL;
struct ast_flags config_flags = { reload ? CONFIG_FLAG_FILEUNCHANGED : 0 };
int res = -1;
cfg = ast_config_load2(config, "indications", config_flags);
if (cfg == CONFIG_STATUS_FILEMISSING || cfg == CONFIG_STATUS_FILEINVALID) {
ast_log(LOG_WARNING, "Can't find indications config file %s.\n", config);
return 0;
} else if (cfg == CONFIG_STATUS_FILEUNCHANGED) {
return 0;
}
/* Lock the container to prevent multiple simultaneous reloads */
ao2_lock(ast_tone_zones);
ao2_callback(ast_tone_zones, OBJ_NODATA, tone_zone_mark, NULL);
/* Use existing config to populate the Indication table */
while ((cxt = ast_category_browse(cfg, cxt))) {
/* All categories but "general" are considered countries */
if (!strcasecmp(cxt, "general")) {
continue;
}
if (parse_tone_zone(cfg, cxt)) {
goto return_cleanup;
}
}
ao2_callback(ast_tone_zones, OBJ_NODATA | OBJ_MULTIPLE | OBJ_UNLINK,
prune_tone_zone, NULL);
/* determine which country is the default */
country = ast_variable_retrieve(cfg, "general", "country");
if (ast_strlen_zero(country) || ast_set_indication_country(country)) {
ast_log(LOG_WARNING, "Unable to set the default country (for indication tones)\n");
}
res = 0;
return_cleanup:
ao2_unlock(ast_tone_zones);
ast_config_destroy(cfg);
return res;
}
/*! \brief CLI entries for commands provided by this module */
static struct ast_cli_entry cli_indications[] = {
AST_CLI_DEFINE(handle_cli_indication_add, "Add the given indication to the country"),
AST_CLI_DEFINE(handle_cli_indication_remove, "Remove the given indication from the country"),
AST_CLI_DEFINE(handle_cli_indication_show, "Display a list of all countries/indications")
};
static int ast_tone_zone_hash(const void *obj, const int flags)
{
const struct ast_tone_zone *zone = obj;
return ast_str_case_hash(zone->country);
}
static int ast_tone_zone_cmp(void *obj, void *arg, int flags)
{
struct ast_tone_zone *zone = obj;
struct ast_tone_zone *zone_arg = arg;
return (!strcasecmp(zone->country, zone_arg->country)) ?
CMP_MATCH | CMP_STOP : 0;
}
int ast_tone_zone_data_add_structure(struct ast_data *tree, struct ast_tone_zone *zone)
{
struct ast_data *data_zone_sound;
struct ast_tone_zone_sound *s;
ast_data_add_structure(ast_tone_zone, tree, zone);
if (AST_LIST_EMPTY(&zone->tones)) {
return 0;
}
data_zone_sound = ast_data_add_node(tree, "tones");
if (!data_zone_sound) {
return -1;
}
ast_tone_zone_lock(zone);
AST_LIST_TRAVERSE(&zone->tones, s, entry) {
ast_data_add_structure(ast_tone_zone_sound, data_zone_sound, s);
}
ast_tone_zone_unlock(zone);
return 0;
}
/*! \brief Load indications module */
int ast_indications_init(void)
{
if (!(ast_tone_zones = ao2_container_alloc(NUM_TONE_ZONE_BUCKETS,
ast_tone_zone_hash, ast_tone_zone_cmp))) {
return -1;
}
if (load_indications(0)) {
return -1;
}
ast_cli_register_multiple(cli_indications, ARRAY_LEN(cli_indications));
return 0;
}
/*! \brief Reload indications module */
int ast_indications_reload(void)
{
return load_indications(1);
}
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