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-rw-r--r--1.4.23-rc4/apps/app_alarmreceiver.c841
1 files changed, 841 insertions, 0 deletions
diff --git a/1.4.23-rc4/apps/app_alarmreceiver.c b/1.4.23-rc4/apps/app_alarmreceiver.c
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index 000000000..8afce25d5
--- /dev/null
+++ b/1.4.23-rc4/apps/app_alarmreceiver.c
@@ -0,0 +1,841 @@
+/*
+ * Asterisk -- An open source telephony toolkit.
+ *
+ * Copyright (C) 2004 - 2005 Steve Rodgers
+ *
+ * Steve Rodgers <hwstar@rodgers.sdcoxmail.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 Central Station Alarm receiver for Ademco Contact ID
+ * \author Steve Rodgers <hwstar@rodgers.sdcoxmail.com>
+ *
+ * *** WARNING *** WARNING *** WARNING *** WARNING *** WARNING *** WARNING *** WARNING *** WARNING ***
+ *
+ * Use at your own risk. Please consult the GNU GPL license document included with Asterisk. *
+ *
+ * *** WARNING *** WARNING *** WARNING *** WARNING *** WARNING *** WARNING *** WARNING *** WARNING ***
+ *
+ * \ingroup applications
+ */
+
+#include "asterisk.h"
+
+ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
+
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <math.h>
+#include <sys/wait.h>
+#include <unistd.h>
+#include <sys/time.h>
+
+#include "asterisk/lock.h"
+#include "asterisk/file.h"
+#include "asterisk/logger.h"
+#include "asterisk/channel.h"
+#include "asterisk/pbx.h"
+#include "asterisk/module.h"
+#include "asterisk/translate.h"
+#include "asterisk/ulaw.h"
+#include "asterisk/options.h"
+#include "asterisk/app.h"
+#include "asterisk/dsp.h"
+#include "asterisk/config.h"
+#include "asterisk/localtime.h"
+#include "asterisk/callerid.h"
+#include "asterisk/astdb.h"
+#include "asterisk/utils.h"
+
+#define ALMRCV_CONFIG "alarmreceiver.conf"
+#define ADEMCO_CONTACT_ID "ADEMCO_CONTACT_ID"
+
+struct event_node{
+ char data[17];
+ struct event_node *next;
+};
+
+typedef struct event_node event_node_t;
+
+static char *app = "AlarmReceiver";
+
+static char *synopsis = "Provide support for receiving alarm reports from a burglar or fire alarm panel";
+static char *descrip =
+" AlarmReceiver(): Only 1 signalling format is supported at this time: Ademco\n"
+"Contact ID. This application should be called whenever there is an alarm\n"
+"panel calling in to dump its events. The application will handshake with the\n"
+"alarm panel, and receive events, validate them, handshake them, and store them\n"
+"until the panel hangs up. Once the panel hangs up, the application will run the\n"
+"system command specified by the eventcmd setting in alarmreceiver.conf and pipe\n"
+"the events to the standard input of the application. The configuration file also\n"
+"contains settings for DTMF timing, and for the loudness of the acknowledgement\n"
+"tones.\n";
+
+/* Config Variables */
+
+static int fdtimeout = 2000;
+static int sdtimeout = 200;
+static int toneloudness = 4096;
+static int log_individual_events = 0;
+static char event_spool_dir[128] = {'\0'};
+static char event_app[128] = {'\0'};
+static char db_family[128] = {'\0'};
+static char time_stamp_format[128] = {"%a %b %d, %Y @ %H:%M:%S %Z"};
+
+/* Misc variables */
+
+static char event_file[14] = "/event-XXXXXX";
+
+/*
+* Attempt to access a database variable and increment it,
+* provided that the user defined db-family in alarmreceiver.conf
+* The alarmreceiver app will write statistics to a few variables
+* in this family if it is defined. If the new key doesn't exist in the
+* family, then create it and set its value to 1.
+*/
+
+static void database_increment( char *key )
+{
+ int res = 0;
+ unsigned v;
+ char value[16];
+
+
+ if (ast_strlen_zero(db_family))
+ return; /* If not defined, don't do anything */
+
+ res = ast_db_get(db_family, key, value, sizeof(value) - 1);
+
+ if(res){
+ if(option_verbose >= 4)
+ ast_verbose(VERBOSE_PREFIX_4 "AlarmReceiver: Creating database entry %s and setting to 1\n", key);
+ /* Guess we have to create it */
+ res = ast_db_put(db_family, key, "1");
+ return;
+ }
+
+ sscanf(value, "%u", &v);
+ v++;
+
+ if(option_verbose >= 4)
+ ast_verbose(VERBOSE_PREFIX_4 "AlarmReceiver: New value for %s: %u\n", key, v);
+
+ snprintf(value, sizeof(value), "%u", v);
+
+ res = ast_db_put(db_family, key, value);
+
+ if((res)&&(option_verbose >= 4))
+ ast_verbose(VERBOSE_PREFIX_4 "AlarmReceiver: database_increment write error\n");
+
+ return;
+}
+
+
+/*
+* Build a MuLaw data block for a single frequency tone
+*/
+
+static void make_tone_burst(unsigned char *data, float freq, float loudness, int len, int *x)
+{
+ int i;
+ float val;
+
+ for(i = 0; i < len; i++){
+ val = loudness * sin((freq * 2.0 * M_PI * (*x)++)/8000.0);
+ data[i] = AST_LIN2MU((int)val);
+ }
+
+ /* wrap back around from 8000 */
+
+ if (*x >= 8000) *x = 0;
+ return;
+}
+
+/*
+* Send a single tone burst for a specifed duration and frequency.
+* Returns 0 if successful
+*/
+
+static int send_tone_burst(struct ast_channel *chan, float freq, int duration, int tldn)
+{
+ int res = 0;
+ int i = 0;
+ int x = 0;
+ struct ast_frame *f, wf;
+
+ struct {
+ unsigned char offset[AST_FRIENDLY_OFFSET];
+ unsigned char buf[640];
+ } tone_block;
+
+ for(;;)
+ {
+
+ if (ast_waitfor(chan, -1) < 0){
+ res = -1;
+ break;
+ }
+
+ f = ast_read(chan);
+ if (!f){
+ res = -1;
+ break;
+ }
+
+ if (f->frametype == AST_FRAME_VOICE) {
+ wf.frametype = AST_FRAME_VOICE;
+ wf.subclass = AST_FORMAT_ULAW;
+ wf.offset = AST_FRIENDLY_OFFSET;
+ wf.mallocd = 0;
+ wf.data = tone_block.buf;
+ wf.datalen = f->datalen;
+ wf.samples = wf.datalen;
+
+ make_tone_burst(tone_block.buf, freq, (float) tldn, wf.datalen, &x);
+
+ i += wf.datalen / 8;
+ if (i > duration) {
+ ast_frfree(f);
+ break;
+ }
+ if (ast_write(chan, &wf)){
+ if(option_verbose >= 4)
+ ast_verbose(VERBOSE_PREFIX_4 "AlarmReceiver: Failed to write frame on %s\n", chan->name);
+ ast_log(LOG_WARNING, "AlarmReceiver Failed to write frame on %s\n",chan->name);
+ res = -1;
+ ast_frfree(f);
+ break;
+ }
+ }
+
+ ast_frfree(f);
+ }
+ return res;
+}
+
+/*
+* Receive a string of DTMF digits where the length of the digit string is known in advance. Do not give preferential
+* treatment to any digit value, and allow separate time out values to be specified for the first digit and all subsequent
+* digits.
+*
+* Returns 0 if all digits successfully received.
+* Returns 1 if a digit time out occurred
+* Returns -1 if the caller hung up or there was a channel error.
+*
+*/
+
+static int receive_dtmf_digits(struct ast_channel *chan, char *digit_string, int length, int fdto, int sdto)
+{
+ int res = 0;
+ int i = 0;
+ int r;
+ struct ast_frame *f;
+ struct timeval lastdigittime;
+
+ lastdigittime = ast_tvnow();
+ for(;;){
+ /* if outa time, leave */
+ if (ast_tvdiff_ms(ast_tvnow(), lastdigittime) >
+ ((i > 0) ? sdto : fdto)){
+ if(option_verbose >= 4)
+ ast_verbose(VERBOSE_PREFIX_4 "AlarmReceiver: DTMF Digit Timeout on %s\n", chan->name);
+
+ ast_log(LOG_DEBUG,"AlarmReceiver: DTMF timeout on chan %s\n",chan->name);
+
+ res = 1;
+ break;
+ }
+
+ if ((r = ast_waitfor(chan, -1) < 0)) {
+ ast_log(LOG_DEBUG, "Waitfor returned %d\n", r);
+ continue;
+ }
+
+ f = ast_read(chan);
+
+ if (f == NULL){
+ res = -1;
+ break;
+ }
+
+ /* If they hung up, leave */
+ if ((f->frametype == AST_FRAME_CONTROL) &&
+ (f->subclass == AST_CONTROL_HANGUP)){
+ ast_frfree(f);
+ res = -1;
+ break;
+ }
+
+ /* if not DTMF, just do it again */
+ if (f->frametype != AST_FRAME_DTMF){
+ ast_frfree(f);
+ continue;
+ }
+
+ digit_string[i++] = f->subclass; /* save digit */
+
+ ast_frfree(f);
+
+ /* If we have all the digits we expect, leave */
+ if(i >= length)
+ break;
+
+ lastdigittime = ast_tvnow();
+ }
+
+ digit_string[i] = '\0'; /* Nul terminate the end of the digit string */
+ return res;
+
+}
+
+/*
+* Write the metadata to the log file
+*/
+
+static int write_metadata( FILE *logfile, char *signalling_type, struct ast_channel *chan)
+{
+ int res = 0;
+ time_t t;
+ struct tm now;
+ char *cl,*cn;
+ char workstring[80];
+ char timestamp[80];
+
+ /* Extract the caller ID location */
+ if (chan->cid.cid_num)
+ ast_copy_string(workstring, chan->cid.cid_num, sizeof(workstring));
+ workstring[sizeof(workstring) - 1] = '\0';
+
+ ast_callerid_parse(workstring, &cn, &cl);
+ if (cl)
+ ast_shrink_phone_number(cl);
+
+
+ /* Get the current time */
+
+ time(&t);
+ ast_localtime(&t, &now, NULL);
+
+ /* Format the time */
+
+ strftime(timestamp, sizeof(timestamp), time_stamp_format, &now);
+
+
+ res = fprintf(logfile, "\n\n[metadata]\n\n");
+
+ if(res >= 0)
+ res = fprintf(logfile, "PROTOCOL=%s\n", signalling_type);
+
+ if(res >= 0)
+ res = fprintf(logfile, "CALLINGFROM=%s\n", (!cl) ? "<unknown>" : cl);
+
+ if(res >- 0)
+ res = fprintf(logfile, "CALLERNAME=%s\n", (!cn) ? "<unknown>" : cn);
+
+ if(res >= 0)
+ res = fprintf(logfile, "TIMESTAMP=%s\n\n", timestamp);
+
+ if(res >= 0)
+ res = fprintf(logfile, "[events]\n\n");
+
+ if(res < 0){
+ ast_verbose(VERBOSE_PREFIX_4 "AlarmReceiver: can't write metadata\n");
+
+ ast_log(LOG_DEBUG,"AlarmReceiver: can't write metadata\n");
+ }
+ else
+ res = 0;
+
+ return res;
+}
+
+/*
+* Write a single event to the log file
+*/
+
+static int write_event( FILE *logfile, event_node_t *event)
+{
+ int res = 0;
+
+ if( fprintf(logfile, "%s\n", event->data) < 0)
+ res = -1;
+
+ return res;
+}
+
+
+/*
+* If we are configured to log events, do so here.
+*
+*/
+
+static int log_events(struct ast_channel *chan, char *signalling_type, event_node_t *event)
+{
+
+ int res = 0;
+ char workstring[sizeof(event_spool_dir)+sizeof(event_file)] = "";
+ int fd;
+ FILE *logfile;
+ event_node_t *elp = event;
+
+ if (!ast_strlen_zero(event_spool_dir)) {
+
+ /* Make a template */
+
+ ast_copy_string(workstring, event_spool_dir, sizeof(workstring));
+ strncat(workstring, event_file, sizeof(workstring) - strlen(workstring) - 1);
+
+ /* Make the temporary file */
+
+ fd = mkstemp(workstring);
+
+ if(fd == -1){
+ ast_verbose(VERBOSE_PREFIX_4 "AlarmReceiver: can't make temporary file\n");
+ ast_log(LOG_DEBUG,"AlarmReceiver: can't make temporary file\n");
+ res = -1;
+ }
+
+ if(!res){
+ logfile = fdopen(fd, "w");
+ if(logfile){
+ /* Write the file */
+ res = write_metadata(logfile, signalling_type, chan);
+ if(!res)
+ while((!res) && (elp != NULL)){
+ res = write_event(logfile, elp);
+ elp = elp->next;
+ }
+ if(!res){
+ if(fflush(logfile) == EOF)
+ res = -1;
+ if(!res){
+ if(fclose(logfile) == EOF)
+ res = -1;
+ }
+ }
+ }
+ else
+ res = -1;
+ }
+ }
+
+ return res;
+}
+
+/*
+* This function implements the logic to receive the Ademco contact ID format.
+*
+* The function will return 0 when the caller hangs up, else a -1 if there was a problem.
+*/
+
+static int receive_ademco_contact_id( struct ast_channel *chan, void *data, int fdto, int sdto, int tldn, event_node_t **ehead)
+{
+ int i,j;
+ int res = 0;
+ int checksum;
+ char event[17];
+ event_node_t *enew, *elp;
+ int got_some_digits = 0;
+ int events_received = 0;
+ int ack_retries = 0;
+
+ static char digit_map[15] = "0123456789*#ABC";
+ static unsigned char digit_weights[15] = {10,1,2,3,4,5,6,7,8,9,11,12,13,14,15};
+
+ database_increment("calls-received");
+
+ /* Wait for first event */
+
+ if(option_verbose >= 4)
+ ast_verbose(VERBOSE_PREFIX_4 "AlarmReceiver: Waiting for first event from panel\n");
+
+ while(res >= 0){
+
+ if(got_some_digits == 0){
+
+ /* Send ACK tone sequence */
+
+
+ if(option_verbose >= 4)
+ ast_verbose(VERBOSE_PREFIX_4 "AlarmReceiver: Sending 1400Hz 100ms burst (ACK)\n");
+
+
+ res = send_tone_burst(chan, 1400.0, 100, tldn);
+
+ if(!res)
+ res = ast_safe_sleep(chan, 100);
+
+ if(!res){
+ if(option_verbose >= 4)
+ ast_verbose(VERBOSE_PREFIX_4 "AlarmReceiver: Sending 2300Hz 100ms burst (ACK)\n");
+
+ res = send_tone_burst(chan, 2300.0, 100, tldn);
+ }
+
+ }
+
+ if( res >= 0)
+ res = receive_dtmf_digits(chan, event, sizeof(event) - 1, fdto, sdto);
+
+ if (res < 0){
+
+ if(events_received == 0)
+ /* Hangup with no events received should be logged in the DB */
+ database_increment("no-events-received");
+ else{
+ if(ack_retries){
+ if(option_verbose >= 4)
+ ast_verbose(VERBOSE_PREFIX_2 "AlarmReceiver: ACK retries during this call: %d\n", ack_retries);
+
+ database_increment("ack-retries");
+ }
+ }
+ if(option_verbose >= 4)
+ ast_verbose(VERBOSE_PREFIX_4 "AlarmReceiver: App exiting...\n");
+ res = -1;
+ break;
+ }
+
+ if(res != 0){
+ /* Didn't get all of the digits */
+ if(option_verbose >= 2)
+ ast_verbose(VERBOSE_PREFIX_2 "AlarmReceiver: Incomplete string: %s, trying again...\n", event);
+
+ if(!got_some_digits){
+ got_some_digits = (!ast_strlen_zero(event)) ? 1 : 0;
+ ack_retries++;
+ }
+ continue;
+ }
+
+ got_some_digits = 1;
+
+ if(option_verbose >= 2)
+ ast_verbose(VERBOSE_PREFIX_2 "AlarmReceiver: Received Event %s\n", event);
+ ast_log(LOG_DEBUG, "AlarmReceiver: Received event: %s\n", event);
+
+ /* Calculate checksum */
+
+ for(j = 0, checksum = 0; j < 16; j++){
+ for(i = 0 ; i < sizeof(digit_map) ; i++){
+ if(digit_map[i] == event[j])
+ break;
+ }
+
+ if(i == 16)
+ break;
+
+ checksum += digit_weights[i];
+ }
+
+ if(i == 16){
+ if(option_verbose >= 2)
+ ast_verbose(VERBOSE_PREFIX_2 "AlarmReceiver: Bad DTMF character %c, trying again\n", event[j]);
+ continue; /* Bad character */
+ }
+
+ /* Checksum is mod(15) of the total */
+
+ checksum = checksum % 15;
+
+ if (checksum) {
+ database_increment("checksum-errors");
+ if (option_verbose >= 2)
+ ast_verbose(VERBOSE_PREFIX_2 "AlarmReceiver: Nonzero checksum\n");
+ ast_log(LOG_DEBUG, "AlarmReceiver: Nonzero checksum\n");
+ continue;
+ }
+
+ /* Check the message type for correctness */
+
+ if(strncmp(event + 4, "18", 2)){
+ if(strncmp(event + 4, "98", 2)){
+ database_increment("format-errors");
+ if(option_verbose >= 2)
+ ast_verbose(VERBOSE_PREFIX_2 "AlarmReceiver: Wrong message type\n");
+ ast_log(LOG_DEBUG, "AlarmReceiver: Wrong message type\n");
+ continue;
+ }
+ }
+
+ events_received++;
+
+ /* Queue the Event */
+ if (!(enew = ast_calloc(1, sizeof(*enew)))) {
+ res = -1;
+ break;
+ }
+
+ enew->next = NULL;
+ ast_copy_string(enew->data, event, sizeof(enew->data));
+
+ /*
+ * Insert event onto end of list
+ */
+
+ if(*ehead == NULL){
+ *ehead = enew;
+ }
+ else{
+ for(elp = *ehead; elp->next != NULL; elp = elp->next)
+ ;
+
+ elp->next = enew;
+ }
+
+ if(res > 0)
+ res = 0;
+
+ /* Let the user have the option of logging the single event before sending the kissoff tone */
+
+ if((res == 0) && (log_individual_events))
+ res = log_events(chan, ADEMCO_CONTACT_ID, enew);
+
+ /* Wait 200 msec before sending kissoff */
+
+ if(res == 0)
+ res = ast_safe_sleep(chan, 200);
+
+ /* Send the kissoff tone */
+
+ if(res == 0)
+ res = send_tone_burst(chan, 1400.0, 900, tldn);
+ }
+
+
+ return res;
+}
+
+
+/*
+* This is the main function called by Asterisk Core whenever the App is invoked in the extension logic.
+* This function will always return 0.
+*/
+
+static int alarmreceiver_exec(struct ast_channel *chan, void *data)
+{
+ int res = 0;
+ struct ast_module_user *u;
+ event_node_t *elp, *efree;
+ char signalling_type[64] = "";
+
+ event_node_t *event_head = NULL;
+
+ u = ast_module_user_add(chan);
+
+ /* Set write and read formats to ULAW */
+
+ if(option_verbose >= 4)
+ ast_verbose(VERBOSE_PREFIX_4 "AlarmReceiver: Setting read and write formats to ULAW\n");
+
+ if (ast_set_write_format(chan,AST_FORMAT_ULAW)){
+ ast_log(LOG_WARNING, "AlarmReceiver: Unable to set write format to Mu-law on %s\n",chan->name);
+ ast_module_user_remove(u);
+ return -1;
+ }
+
+ if (ast_set_read_format(chan,AST_FORMAT_ULAW)){
+ ast_log(LOG_WARNING, "AlarmReceiver: Unable to set read format to Mu-law on %s\n",chan->name);
+ ast_module_user_remove(u);
+ return -1;
+ }
+
+ /* Set default values for this invokation of the application */
+
+ ast_copy_string(signalling_type, ADEMCO_CONTACT_ID, sizeof(signalling_type));
+
+
+ /* Answer the channel if it is not already */
+
+ if(option_verbose >= 4)
+ ast_verbose(VERBOSE_PREFIX_4 "AlarmReceiver: Answering channel\n");
+
+ if (chan->_state != AST_STATE_UP) {
+
+ res = ast_answer(chan);
+
+ if (res) {
+ ast_module_user_remove(u);
+ return -1;
+ }
+ }
+
+ /* Wait for the connection to settle post-answer */
+
+ if(option_verbose >= 4)
+ ast_verbose(VERBOSE_PREFIX_4 "AlarmReceiver: Waiting for connection to stabilize\n");
+
+ res = ast_safe_sleep(chan, 1250);
+
+ /* Attempt to receive the events */
+
+ if(!res){
+
+ /* Determine the protocol to receive in advance */
+ /* Note: Ademco contact is the only one supported at this time */
+ /* Others may be added later */
+
+ if(!strcmp(signalling_type, ADEMCO_CONTACT_ID))
+ receive_ademco_contact_id(chan, data, fdtimeout, sdtimeout, toneloudness, &event_head);
+ else
+ res = -1;
+ }
+
+
+
+ /* Events queued by receiver, write them all out here if so configured */
+
+ if((!res) && (log_individual_events == 0)){
+ res = log_events(chan, signalling_type, event_head);
+
+ }
+
+ /*
+ * Do we exec a command line at the end?
+ */
+
+ if((!res) && (!ast_strlen_zero(event_app)) && (event_head)){
+ ast_log(LOG_DEBUG,"Alarmreceiver: executing: %s\n", event_app);
+ ast_safe_system(event_app);
+ }
+
+ /*
+ * Free up the data allocated in our linked list
+ */
+
+ for(elp = event_head; (elp != NULL);){
+ efree = elp;
+ elp = elp->next;
+ free(efree);
+ }
+
+
+ ast_module_user_remove(u);
+
+ return 0;
+}
+
+/*
+* Load the configuration from the configuration file
+*/
+
+static int load_config(void)
+{
+ struct ast_config *cfg;
+ const char *p;
+
+ /* Read in the config file */
+
+ cfg = ast_config_load(ALMRCV_CONFIG);
+
+ if(!cfg){
+
+ if(option_verbose >= 4)
+ ast_verbose(VERBOSE_PREFIX_4 "AlarmReceiver: No config file\n");
+ return 0;
+ }
+ else{
+
+
+ p = ast_variable_retrieve(cfg, "general", "eventcmd");
+
+ if(p){
+ ast_copy_string(event_app, p, sizeof(event_app));
+ event_app[sizeof(event_app) - 1] = '\0';
+ }
+
+ p = ast_variable_retrieve(cfg, "general", "loudness");
+ if(p){
+ toneloudness = atoi(p);
+ if(toneloudness < 100)
+ toneloudness = 100;
+ if(toneloudness > 8192)
+ toneloudness = 8192;
+ }
+ p = ast_variable_retrieve(cfg, "general", "fdtimeout");
+ if(p){
+ fdtimeout = atoi(p);
+ if(fdtimeout < 1000)
+ fdtimeout = 1000;
+ if(fdtimeout > 10000)
+ fdtimeout = 10000;
+ }
+
+ p = ast_variable_retrieve(cfg, "general", "sdtimeout");
+ if(p){
+ sdtimeout = atoi(p);
+ if(sdtimeout < 110)
+ sdtimeout = 110;
+ if(sdtimeout > 4000)
+ sdtimeout = 4000;
+
+ }
+
+ p = ast_variable_retrieve(cfg, "general", "logindividualevents");
+ if(p){
+ log_individual_events = ast_true(p);
+
+ }
+
+ p = ast_variable_retrieve(cfg, "general", "eventspooldir");
+
+ if(p){
+ ast_copy_string(event_spool_dir, p, sizeof(event_spool_dir));
+ event_spool_dir[sizeof(event_spool_dir) - 1] = '\0';
+ }
+
+ p = ast_variable_retrieve(cfg, "general", "timestampformat");
+
+ if(p){
+ ast_copy_string(time_stamp_format, p, sizeof(time_stamp_format));
+ time_stamp_format[sizeof(time_stamp_format) - 1] = '\0';
+ }
+
+ p = ast_variable_retrieve(cfg, "general", "db-family");
+
+ if(p){
+ ast_copy_string(db_family, p, sizeof(db_family));
+ db_family[sizeof(db_family) - 1] = '\0';
+ }
+ ast_config_destroy(cfg);
+ }
+ return 1;
+
+}
+
+/*
+* These functions are required to implement an Asterisk App.
+*/
+
+
+static int unload_module(void)
+{
+ int res;
+
+ res = ast_unregister_application(app);
+
+ ast_module_user_hangup_all();
+
+ return res;
+}
+
+static int load_module(void)
+{
+ if(load_config())
+ return ast_register_application(app, alarmreceiver_exec, synopsis, descrip);
+ else
+ return AST_MODULE_LOAD_DECLINE;
+}
+
+AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Alarm Receiver for Asterisk");