*/
/*! \file
+ *
* \brief Central Station Alarm receiver for Ademco Contact ID
* \author Steve Rodgers <hwstar@rodgers.sdcoxmail.com>
*
#include "asterisk/pbx.h"
#include "asterisk/module.h"
#include "asterisk/translate.h"
-#include "asterisk/ulaw.h"
#include "asterisk/app.h"
#include "asterisk/dsp.h"
#include "asterisk/config.h"
#include "asterisk/callerid.h"
#include "asterisk/astdb.h"
#include "asterisk/utils.h"
+#include "asterisk/indications.h"
#define ALMRCV_CONFIG "alarmreceiver.conf"
#define ADEMCO_CONTACT_ID "ADEMCO_CONTACT_ID"
+#define ADEMCO_MSG_TYPE_1 "18"
+#define ADEMCO_MSG_TYPE_2 "98"
+#define ADEMCO_AUDIO_CALL_NEXT "606"
+
+struct {
+ char digit;
+ char weight;
+} digits_mapping[] = { {'0', 10}, {'1', 1} , {'2', 2}, {'3', 3}, {'4', 4}, {'5', 5},
+ {'6', 6}, {'7', 7}, {'8', 8}, {'9', 9}, {'*', 11}, {'#', 12},
+ {'A', 13}, {'B', 14}, {'C', 15} };
struct event_node{
char data[17];
/* 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 )
+/*!
+ * \brief Attempt to access a database variable and increment it
+ *
+ * \note Only if 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.
+ *
+ * \param key A database key to increment
+ * \return Nothing
+ */
+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 (ast_strlen_zero(db_family)) {
+ return; /* If not defined, don't do anything */
+ }
+
+ if (ast_db_get(db_family, key, value, sizeof(value) - 1)) {
ast_verb(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");
+ ast_db_put(db_family, key, "1");
return;
}
-
+
sscanf(value, "%30u", &v);
v++;
ast_verb(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)
+ if (ast_db_put(db_family, key, value)) {
ast_verb(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;
- ast_format_set(&wf.subclass.format, AST_FORMAT_ULAW, 0);
- wf.offset = AST_FRIENDLY_OFFSET;
- wf.mallocd = 0;
- wf.data.ptr = 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)) {
- ast_verb(4, "AlarmReceiver: Failed to write frame on %s\n", ast_channel_name(chan));
- ast_log(LOG_WARNING, "AlarmReceiver Failed to write frame on %s\n",ast_channel_name(chan));
- 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.
-*
-*/
+/*!
+ * \brief Receive a fixed length DTMF string.
+ *
+ * \note Doesn't give preferential treatment to any digit,
+ * \note allow different timeout values for the first and all subsequent digits
+ *
+ * \param chan Asterisk Channel
+ * \param digit_string Digits String
+ * \param length Length of the message we expect
+ * \param fdto First Digit Timeout
+ * \param sdto Other Digits Timeout
+ *
+ * \retval 0 if all digits were successfully received
+ * \retval 1 if a timeout occurred
+ * \retval -1 if the caller hung up or on channel errors
+ */
static int receive_dtmf_digits(struct ast_channel *chan, char *digit_string, int length, int fdto, int sdto)
{
- int res = 0;
+ int rtn = 0;
int i = 0;
int r;
struct ast_frame *f;
struct timeval lastdigittime;
lastdigittime = ast_tvnow();
- for (;;) {
- /* if outa time, leave */
+ while (i < length && i < sizeof(digit_string) - 1) {
+ /* If timed out, leave */
if (ast_tvdiff_ms(ast_tvnow(), lastdigittime) > ((i > 0) ? sdto : fdto)) {
ast_verb(4, "AlarmReceiver: DTMF Digit Timeout on %s\n", ast_channel_name(chan));
- ast_debug(1,"AlarmReceiver: DTMF timeout on chan %s\n",ast_channel_name(chan));
- res = 1;
+ ast_debug(1, "AlarmReceiver: DTMF timeout on chan %s\n", ast_channel_name(chan));
+ rtn = 1;
break;
}
continue;
}
- f = ast_read(chan);
-
- if (f == NULL) {
- res = -1;
+ if ((f = ast_read(chan)) == NULL) {
+ rtn = -1;
break;
}
/* If they hung up, leave */
- if ((f->frametype == AST_FRAME_CONTROL) && (f->subclass.integer == AST_CONTROL_HANGUP)) {
+ if ((f->frametype == AST_FRAME_CONTROL)
+ && (f->subclass.integer == AST_CONTROL_HANGUP)) {
if (f->data.uint32) {
ast_channel_hangupcause_set(chan, f->data.uint32);
}
ast_frfree(f);
- res = -1;
+ rtn = -1;
break;
}
- /* if not DTMF, just do it again */
+ /* If not DTMF, just do it again */
if (f->frametype != AST_FRAME_DTMF) {
ast_frfree(f);
continue;
}
- digit_string[i++] = f->subclass.integer; /* save digit */
-
+ /* Save digit */
+ digit_string[i++] = f->subclass.integer;
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;
+ /* Null terminate the end of the digit string */
+ digit_string[i] = '\0';
+ return rtn;
}
-/*
-* Write the metadata to the log file
-*/
-static int write_metadata( FILE *logfile, char *signalling_type, struct ast_channel *chan)
+/*!
+ * \brief Write metadata to log file
+ *
+ * \param logfile Log File Pointer
+ * \param signalling_type Signaling Type
+ * \param chan Asterisk Channel
+ *
+ * \retval 0 success
+ * \retval -1 failure
+ */
+static int write_metadata(FILE *logfile, char *signalling_type, struct ast_channel *chan)
{
- int res = 0;
struct timeval t;
struct ast_tm now;
char *cl;
char *cn;
char workstring[80];
char timestamp[80];
-
+
/* Extract the caller ID location */
ast_copy_string(workstring,
- S_COR(ast_channel_caller(chan)->id.number.valid, ast_channel_caller(chan)->id.number.str, ""),
- sizeof(workstring));
+ S_COR(ast_channel_caller(chan)->id.number.valid,
+ ast_channel_caller(chan)->id.number.str, ""), sizeof(workstring));
ast_shrink_phone_number(workstring);
if (ast_strlen_zero(workstring)) {
cl = "<unknown>";
} else {
cl = workstring;
}
- cn = S_COR(ast_channel_caller(chan)->id.name.valid, ast_channel_caller(chan)->id.name.str, "<unknown>");
+ cn = S_COR(ast_channel_caller(chan)->id.name.valid,
+ ast_channel_caller(chan)->id.name.str, "<unknown>");
/* Get the current time */
t = ast_tvnow();
/* Format the time */
ast_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);
- }
- if (res >= 0) {
- res = fprintf(logfile, "CALLERNAME=%s\n", cn);
- }
- if (res >= 0) {
- res = fprintf(logfile, "TIMESTAMP=%s\n\n", timestamp);
- }
- if (res >= 0) {
- res = fprintf(logfile, "[events]\n\n");
- }
- if (res < 0) {
+ if (fprintf(logfile, "\n\n[metadata]\n\n"
+ "PROTOCOL=%s\n"
+ "CALLINGFROM=%s\n"
+ "CALLERNAME=%s\n"
+ "TIMESTAMP=%s\n\n"
+ "[events]\n\n", signalling_type, cl, cn, timestamp) < 0) {
ast_verb(3, "AlarmReceiver: can't write metadata\n");
- ast_debug(1,"AlarmReceiver: can't write metadata\n");
- } else {
- res = 0;
+ ast_debug(1, "AlarmReceiver: can't write metadata\n");
+ return -1;
}
- return res;
+ return 0;
}
-/*
-* Write a single event to the log file
-*/
-static int write_event( FILE *logfile, event_node_t *event)
+/*!
+ * \brief Log a single event
+ *
+ * \param logfile Log File Pointer
+ * \param event Event Structure
+ *
+ * \retval 0 success
+ * \retval -1 failure
+ */
+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 (fprintf(logfile, "%s\n", event->data) < 0) {
+ return -1;
+ }
+ return 0;
}
-/*
-* 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)
+/*!
+ * \brief Log events if configuration key logindividualevents is enabled
+ *
+ * \param chan Asterisk Channel
+ * \param signalling_type Signaling Type
+ * \param event Event Structure
+ *
+ * \retval 0 success
+ * \retval -1 failure
+ */
+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)] = "";
+ 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_verb(3, "AlarmReceiver: can't make temporary file\n");
- ast_debug(1,"AlarmReceiver: can't make temporary file\n");
- res = -1;
+ ast_debug(1, "AlarmReceiver: can't make temporary file\n");
+ return -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;
+ if ((logfile = fdopen(fd, "w")) == NULL) {
+ return -1;
+ }
+
+ /* Write the file */
+ if (write_metadata(logfile, signalling_type, chan) != 0) {
+ fflush(logfile);
+ fclose(logfile);
+ return -1;
+ }
+
+ while ((write_event(logfile, elp) > 0) && (elp != NULL)) {
+ elp = elp->next;
}
+
+ fflush(logfile);
+ fclose(logfile);
}
- return res;
+ return 0;
}
-/*
-* 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, const void *data, int fdto, int sdto, int tldn, event_node_t **ehead)
+/*!
+ * \brief Verify Ademco checksum
+ * \since 11.0
+ *
+ * \param event Received DTMF String
+ * \param expected Number of Digits expected
+ *
+ * \retval 0 success
+ * \retval -1 failure
+ */
+static int ademco_verify_checksum(char *event, int expected)
{
+ int checksum = 0;
int i, j;
+
+ for (j = 0; j < expected; j++) {
+ for (i = 0; i < ARRAY_LEN(digits_mapping); i++) {
+ if (digits_mapping[i].digit == event[j]) {
+ break;
+ }
+ }
+
+ if (i >= ARRAY_LEN(digits_mapping)) {
+ ast_verb(2, "AlarmReceiver: Bad DTMF character %c, trying again\n", event[j]);
+ return -1;
+ }
+
+ checksum += digits_mapping[i].weight;
+ }
+
+ /* Checksum is mod(15) of the total */
+ if (!(checksum % 15)) {
+ return 0;
+ }
+
+ return -1;
+}
+
+/*!
+ * \brief Send a single tone burst for a specifed duration and frequency.
+ * \since 11.0
+ *
+ * \param chan Asterisk Channel
+ * \param tone_freq Frequency of the tone to send
+ * \param tone_duration Tone duration in ms
+ * \param tldn Tone loudness
+ * \param delay Delay before sending the tone
+ *
+ * \retval 0 success
+ * \retval -1 failure
+ */
+static int send_tone_burst(struct ast_channel *chan, const char *tone_freq, int tone_duration, int tldn, int delay)
+{
+ if (delay && ast_safe_sleep(chan, delay)) {
+ return -1;
+ }
+
+ if (ast_playtones_start(chan, tldn, tone_freq, 0)) {
+ return -1;
+ }
+
+ if (ast_safe_sleep(chan, tone_duration)) {
+ return -1;
+ }
+
+ ast_playtones_stop(chan);
+ return 0;
+}
+
+/*!
+ * \brief Receive Ademco ContactID Data String
+ *
+ * \param chan Asterisk Channel
+ * \param fdto First Digit Timeout
+ * \param sdto Other Digits Timeout
+ * \param tldn Tone loudness
+ * \param ehead Pointer to events list
+ *
+ * \retval 0 success
+ * \retval -1 failure
+ */
+static int receive_ademco_contact_id(struct ast_channel *chan, int fdto, int sdto, int tldn, event_node_t **ehead)
+{
int res = 0;
- int checksum;
+ int exit_on_next = 0;
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 */
- ast_verb(4, "AlarmReceiver: Waiting for first event from panel\n");
+ ast_verb(4, "AlarmReceiver: Waiting for first event from panel...\n");
while (res >= 0) {
+ res = 0;
if (got_some_digits == 0) {
/* Send ACK tone sequence */
ast_verb(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);
+ res = send_tone_burst(chan, "1400", 100, tldn, 0);
if (!res) {
ast_verb(4, "AlarmReceiver: Sending 2300Hz 100ms burst (ACK)\n");
- res = send_tone_burst(chan, 2300.0, 100, tldn);
+ res = send_tone_burst(chan, "2300", 100, tldn, 0);
}
}
- if ( res >= 0)
- res = receive_dtmf_digits(chan, event, sizeof(event) - 1, fdto, sdto);
+ if (res) {
+ return -1;
+ }
+
+ if (exit_on_next) {
+ res = send_tone_burst(chan, "1400", 900, tldn, 200);
+ return 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 */
}
}
ast_verb(4, "AlarmReceiver: App exiting...\n");
- res = -1;
break;
}
- if (res != 0) {
+ if (res) {
/* Didn't get all of the digits */
ast_verb(2, "AlarmReceiver: Incomplete string: %s, trying again...\n", event);
ast_debug(1, "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) {
- ast_verb(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) {
+ if (ademco_verify_checksum(event, 16)) {
database_increment("checksum-errors");
ast_verb(2, "AlarmReceiver: Nonzero checksum\n");
ast_debug(1, "AlarmReceiver: Nonzero checksum\n");
}
/* Check the message type for correctness */
-
- if (strncmp(event + 4, "18", 2)) {
- if (strncmp(event + 4, "98", 2)) {
+ if (strncmp(event + 4, ADEMCO_MSG_TYPE_1, 2)) {
+ if (strncmp(event + 4, ADEMCO_MSG_TYPE_2, 2)) {
database_increment("format-errors");
ast_verb(2, "AlarmReceiver: Wrong message type\n");
ast_debug(1, "AlarmReceiver: Wrong message type\n");
/* Queue the Event */
if (!(enew = ast_calloc(1, sizeof(*enew)))) {
- res = -1;
- break;
+ return -1;
}
enew->next = NULL;
ast_copy_string(enew->data, event, sizeof(enew->data));
- /*
- * Insert event onto end of list
- */
- if (*ehead == NULL)
+ /* Insert event onto end of list */
+ if (*ehead == NULL) {
*ehead = enew;
- else {
- for(elp = *ehead; elp->next != NULL; elp = elp->next)
- ;
+ } else {
+ for (elp = *ehead; elp->next != NULL; elp = elp->next) {
+ ;
+ }
elp->next = enew;
}
- if (res > 0)
- res = 0;
+ /* Audio call follows, exit alarm receiver app */
+ if (!strncmp(event + 7, ADEMCO_AUDIO_CALL_NEXT, 3)) {
+ ast_verb(4, "AlarmReceiver: App exiting... Audio call next!\n");
+ exit_on_next = 1;
+ }
/* Let the user have the option of logging the single event before sending the kissoff tone */
- if ((res == 0) && (log_individual_events))
+ if (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);
+ if (res) {
+ return -1;
+ }
+ }
- /* Send the kissoff tone */
- if (res == 0)
- res = send_tone_burst(chan, 1400.0, 900, tldn);
+ /* Send the kissoff tone (1400 Hz, 900 ms, after 200ms delay) */
+ res = send_tone_burst(chan, "1400", 900, tldn, 200);
+ if (res) {
+ return -1;
+ }
}
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.
-*/
+/*!
+ * \brief This is the main function called by Asterisk Core whenever the App is invoked in the extension logic.
+ *
+ * \param chan Asterisk Channel
+ * \param data Application data
+ *
+ * \retval 0 success
+ * \retval -1 failure
+ */
static int alarmreceiver_exec(struct ast_channel *chan, const char *data)
{
int res = 0;
/* Answer the channel if it is not already */
ast_verb(4, "AlarmReceiver: Answering channel\n");
if (ast_channel_state(chan) != AST_STATE_UP) {
- if ((res = ast_answer(chan)))
+ if ((res = ast_answer(chan))) {
return -1;
+ }
}
/* Wait for the connection to settle post-answer */
/* 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
+ if (!strcmp(signalling_type, ADEMCO_CONTACT_ID)) {
+ receive_ademco_contact_id(chan, 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))
+ if ((!res) && (log_individual_events == 0)) {
res = log_events(chan, signalling_type, event_head);
+ }
- /*
- * Do we exec a command line at the end?
- */
+ /* Do we exec a command line at the end? */
if ((!res) && (!ast_strlen_zero(event_app)) && (event_head)) {
ast_debug(1,"Alarmreceiver: executing: %s\n", event_app);
ast_safe_system(event_app);
}
- /*
- * Free up the data allocated in our linked list
- */
+ /* Free up the data allocated in our linked list */
for (elp = event_head; (elp != NULL);) {
efree = elp;
elp = elp->next;
return 0;
}
-/*
-* Load the configuration from the configuration file
-*/
+/*!
+ * \brief Load the configuration from the configuration file
+ *
+ * \retval 1 success
+ * \retval 0 failure
+ */
static int load_config(void)
{
struct ast_config *cfg;
- const char *p;
+ const char *value;
struct ast_flags config_flags = { 0 };
/* Read in the config file */
ast_verb(4, "AlarmReceiver: No config file\n");
return 0;
} else if (cfg == CONFIG_STATUS_FILEINVALID) {
- ast_log(LOG_ERROR, "Config file %s is in an invalid format. Aborting.\n", ALMRCV_CONFIG);
+ ast_log(LOG_ERROR, "Config file %s is in an invalid format. Aborting.\n",
+ ALMRCV_CONFIG);
return 0;
- } else {
- p = ast_variable_retrieve(cfg, "general", "eventcmd");
- if (p) {
- ast_copy_string(event_app, p, sizeof(event_app));
- }
- p = ast_variable_retrieve(cfg, "general", "loudness");
- if (p) {
- toneloudness = atoi(p);
- if(toneloudness < 100)
- toneloudness = 100;
- if(toneloudness > 8192)
- toneloudness = 8192;
+ }
+
+ if ((value = ast_variable_retrieve(cfg, "general", "eventcmd")) != NULL) {
+ ast_copy_string(event_app, value, sizeof(event_app));
+ }
+
+ if ((value = ast_variable_retrieve(cfg, "general", "loudness")) != NULL) {
+ toneloudness = atoi(value);
+ if (toneloudness < 100) {
+ toneloudness = 100;
+ } else 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;
+ }
+
+ if ((value = ast_variable_retrieve(cfg, "general", "fdtimeout")) != NULL) {
+ fdtimeout = atoi(value);
+ if (fdtimeout < 1000) {
+ fdtimeout = 1000;
+ } else 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;
+ if ((value = ast_variable_retrieve(cfg, "general", "sdtimeout")) != NULL) {
+ sdtimeout = atoi(value);
+ if (sdtimeout < 110) {
+ sdtimeout = 110;
+ } else if (sdtimeout > 4000) {
+ sdtimeout = 4000;
}
+ }
- p = ast_variable_retrieve(cfg, "general", "logindividualevents");
- if (p)
- log_individual_events = ast_true(p);
+ if ((value = ast_variable_retrieve(cfg, "general", "logindividualevents")) != NULL) {
+ log_individual_events = ast_true(value);
+ }
- p = ast_variable_retrieve(cfg, "general", "eventspooldir");
- if (p) {
- ast_copy_string(event_spool_dir, p, sizeof(event_spool_dir));
- }
+ if ((value = ast_variable_retrieve(cfg, "general", "eventspooldir")) != NULL) {
+ ast_copy_string(event_spool_dir, value, sizeof(event_spool_dir));
+ }
- p = ast_variable_retrieve(cfg, "general", "timestampformat");
- if (p) {
- ast_copy_string(time_stamp_format, p, sizeof(time_stamp_format));
- }
+ if ((value = ast_variable_retrieve(cfg, "general", "timestampformat")) != NULL) {
+ ast_copy_string(time_stamp_format, value, sizeof(time_stamp_format));
+ }
- p = ast_variable_retrieve(cfg, "general", "db-family");
- if (p) {
- ast_copy_string(db_family, p, sizeof(db_family));
- }
- ast_config_destroy(cfg);
+ if ((value = ast_variable_retrieve(cfg, "general", "db-family")) != NULL) {
+ ast_copy_string(db_family, value, sizeof(db_family));
}
+
+ ast_config_destroy(cfg);
+
return 1;
}
-/*
-* These functions are required to implement an Asterisk App.
-*/
+/*!
+ * \brief Unregister Alarm Receiver App
+ *
+ * \retval 0 success
+ * \retval -1 failure
+ */
static int unload_module(void)
{
return ast_unregister_application(app);
}
+/**
+ * \brief Register Alarm Receiver App
+ *
+ * \retval 0 success
+ * \retval -1 failure
+ */
static int load_module(void)
{
if (load_config()) {
- if (ast_register_application_xml(app, alarmreceiver_exec))
+ if (ast_register_application_xml(app, alarmreceiver_exec)) {
return AST_MODULE_LOAD_FAILURE;
+ }
return AST_MODULE_LOAD_SUCCESS;
- } else
+ } else {
return AST_MODULE_LOAD_DECLINE;
+ }
}
AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Alarm Receiver for Asterisk");
projects / asterisk/asterisk.git / commitdiff