示例#1
0
static void swift_init_stuff(struct stuff *ps)
{
	ASTOBJ_INIT(ps);
	ps->generating_done = 0;
	ps->q = malloc(cfg_buffer_size);
	ps->pq_r = ps->q;
	ps->pq_w = ps->q;
	ps->qc = 0;
	ps->immediate_exit = 0;
}
示例#2
0
/*!
 * \internal
 * \brief Load and reload SMDI configuration.
 * \param reload this should be 1 if we are reloading and 0 if not.
 *
 * This function loads/reloads the SMDI configuration and starts and stops
 * interfaces accordingly.
 *
 * \return zero on success, -1 on failure, and 1 if no smdi interfaces were started.
 */
static int smdi_load(int reload)
{
	struct ast_config *conf;
	struct ast_variable *v;
	struct ast_smdi_interface *iface = NULL;
	int res = 0;

	/* Config options */
	speed_t baud_rate = B9600;     /* 9600 baud rate */
	tcflag_t paritybit = PARENB;   /* even parity checking */
	tcflag_t charsize = CS7;       /* seven bit characters */
	int stopbits = 0;              /* One stop bit */
	
	int msdstrip = 0;              /* strip zero digits */
	long msg_expiry = SMDI_MSG_EXPIRY_TIME;
	
	conf = ast_config_load(config_file);

	if (!conf) {
		if (reload)
			ast_log(LOG_NOTICE, "Unable to reload config %s: SMDI untouched\n", config_file);
		else
			ast_log(LOG_NOTICE, "Unable to load config %s: SMDI disabled\n", config_file);
		return 1;
	}

	/* Mark all interfaces that we are listening on.  We will unmark them
	 * as we find them in the config file, this way we know any interfaces
	 * still marked after we have finished parsing the config file should
	 * be stopped.
	 */
	if (reload)
		ASTOBJ_CONTAINER_MARKALL(&smdi_ifaces);

	for (v = ast_variable_browse(conf, "interfaces"); v; v = v->next) {
		if (!strcasecmp(v->name, "baudrate")) {
			if (!strcasecmp(v->value, "9600"))
				baud_rate = B9600;
			else if(!strcasecmp(v->value, "4800"))
				baud_rate = B4800;
			else if(!strcasecmp(v->value, "2400"))
				baud_rate = B2400;
			else if(!strcasecmp(v->value, "1200"))
				baud_rate = B1200;
			else {
				ast_log(LOG_NOTICE, "Invalid baud rate '%s' specified in %s (line %d), using default\n", v->value, config_file, v->lineno);
				baud_rate = B9600;
			}
		} else if (!strcasecmp(v->name, "msdstrip")) {
			if (!sscanf(v->value, "%d", &msdstrip)) {
				ast_log(LOG_NOTICE, "Invalid msdstrip value in %s (line %d), using default\n", config_file, v->lineno);
				msdstrip = 0;
			} else if (0 > msdstrip || msdstrip > 9) {
				ast_log(LOG_NOTICE, "Invalid msdstrip value in %s (line %d), using default\n", config_file, v->lineno);
				msdstrip = 0;
			}
		} else if (!strcasecmp(v->name, "msgexpirytime")) {
			if (!sscanf(v->value, "%ld", &msg_expiry)) {
				ast_log(LOG_NOTICE, "Invalid msgexpirytime value in %s (line %d), using default\n", config_file, v->lineno);
				msg_expiry = SMDI_MSG_EXPIRY_TIME;
			}
		} else if (!strcasecmp(v->name, "paritybit")) {
			if (!strcasecmp(v->value, "even"))
				paritybit = PARENB;
			else if (!strcasecmp(v->value, "odd"))
				paritybit = PARENB | PARODD;
			else if (!strcasecmp(v->value, "none"))
				paritybit = ~PARENB;
			else {
				ast_log(LOG_NOTICE, "Invalid parity bit setting in %s (line %d), using default\n", config_file, v->lineno);
				paritybit = PARENB;
			}
		} else if (!strcasecmp(v->name, "charsize")) {
			if (!strcasecmp(v->value, "7"))
				charsize = CS7;
			else if (!strcasecmp(v->value, "8"))
				charsize = CS8;
			else {
				ast_log(LOG_NOTICE, "Invalid character size setting in %s (line %d), using default\n", config_file, v->lineno);
				charsize = CS7;
			}
		} else if (!strcasecmp(v->name, "twostopbits")) {
			stopbits = ast_true(v->name);
		} else if (!strcasecmp(v->name, "smdiport")) {
			if (reload) {
				/* we are reloading, check if we are already
				 * monitoring this interface, if we are we do
				 * not want to start it again.  This also has
				 * the side effect of not updating different
				 * setting for the serial port, but it should
				 * be trivial to rewrite this section so that
				 * options on the port are changed without
				 * restarting the interface.  Or the interface
				 * could be restarted with out emptying the
				 * queue. */
				if ((iface = ASTOBJ_CONTAINER_FIND(&smdi_ifaces, v->value))) {
					ast_log(LOG_NOTICE, "SMDI interface %s already running, not restarting\n", iface->name);
					ASTOBJ_UNMARK(iface);
					ASTOBJ_UNREF(iface, ast_smdi_interface_destroy);
					continue;
				}
			}
							
			if (!(iface = ast_calloc(1, sizeof(*iface))))
				continue;

			ASTOBJ_INIT(iface);
			ASTOBJ_CONTAINER_INIT(&iface->md_q);
			ASTOBJ_CONTAINER_INIT(&iface->mwi_q);

			ast_copy_string(iface->name, v->value, sizeof(iface->name));

			if (!(iface->file = fopen(iface->name, "r"))) {
				ast_log(LOG_ERROR, "Error opening SMDI interface %s (%s)\n", iface->name, strerror(errno));
				ASTOBJ_UNREF(iface, ast_smdi_interface_destroy);
				continue;
			}

			iface->fd = fileno(iface->file);

			/* Set the proper attributes for our serial port. */

			/* get the current attributes from the port */
			if (tcgetattr(iface->fd, &iface->mode)) {
				ast_log(LOG_ERROR, "Error getting atributes of %s (%s)\n", iface->name, strerror(errno));
				ASTOBJ_UNREF(iface, ast_smdi_interface_destroy);
				continue;
			}

			/* set the desired speed */
			if (cfsetispeed(&iface->mode, baud_rate) || cfsetospeed(&iface->mode, baud_rate)) {
				ast_log(LOG_ERROR, "Error setting baud rate on %s (%s)\n", iface->name, strerror(errno));
				ASTOBJ_UNREF(iface, ast_smdi_interface_destroy);
				continue;
			}
			
			/* set the stop bits */
			if (stopbits)
			   iface->mode.c_cflag = iface->mode.c_cflag | CSTOPB;   /* set two stop bits */
			else
			   iface->mode.c_cflag = iface->mode.c_cflag & ~CSTOPB;  /* set one stop bit */

			/* set the parity */
			iface->mode.c_cflag = (iface->mode.c_cflag & ~PARENB & ~PARODD) | paritybit;

			/* set the character size */
			iface->mode.c_cflag = (iface->mode.c_cflag & ~CSIZE) | charsize;
			
			/* commit the desired attributes */
			if (tcsetattr(iface->fd, TCSAFLUSH, &iface->mode)) {
				ast_log(LOG_ERROR, "Error setting attributes on %s (%s)\n", iface->name, strerror(errno));
				ASTOBJ_UNREF(iface, ast_smdi_interface_destroy);
				continue;
			}

			/* set the msdstrip */
			iface->msdstrip = msdstrip;

			/* set the message expiry time */
			iface->msg_expiry = msg_expiry;

                        /* start the listner thread */
			if (option_verbose > 2)
				ast_verbose(VERBOSE_PREFIX_3 "Starting SMDI monitor thread for %s\n", iface->name);
			if (ast_pthread_create(&iface->thread, NULL, smdi_read, iface)) {
				ast_log(LOG_ERROR, "Error starting SMDI monitor thread for %s\n", iface->name);
				ASTOBJ_UNREF(iface, ast_smdi_interface_destroy);
				continue;
			}

			ASTOBJ_CONTAINER_LINK(&smdi_ifaces, iface);
			ASTOBJ_UNREF(iface, ast_smdi_interface_destroy);
			ast_atomic_fetchadd_int(&me->usecnt, +1);
		} else {
			ast_log(LOG_NOTICE, "Ignoring unknown option %s in %s\n", v->name, config_file);
		}
	}
	ast_config_destroy(conf);

	/* Prune any interfaces we should no longer monitor. */
	if (reload)
		ASTOBJ_CONTAINER_PRUNE_MARKED(&smdi_ifaces, ast_smdi_interface_destroy);
	
	ASTOBJ_CONTAINER_RDLOCK(&smdi_ifaces);
	/* TODO: this is bad, we need an ASTOBJ method for this! */
	if (!smdi_ifaces.head)
		res = 1;
	ASTOBJ_CONTAINER_UNLOCK(&smdi_ifaces);
			
	return res;
}
示例#3
0
/*! \brief Read an SMDI message.
 *
 * \param iface_p the SMDI interface to read from.
 *
 * This function loops and reads from and SMDI interface.  It must be stopped
 * using pthread_cancel().
 */
static void *smdi_read(void *iface_p)
{
	struct ast_smdi_interface *iface = iface_p;
	struct ast_smdi_md_message *md_msg;
	struct ast_smdi_mwi_message *mwi_msg;
	char c = '\0';
	char *cp = NULL;
	int i;
	int start = 0;
		
	/* read an smdi message */
	while ((c = fgetc(iface->file))) {

		/* check if this is the start of a message */
		if (!start) {
			if (c == 'M')
				start = 1;
		}
		else { /* Determine if this is a MD or MWI message */
			if(c == 'D') { /* MD message */
				start = 0;

				if (!(md_msg = ast_calloc(1, sizeof(*md_msg)))) {
					ASTOBJ_UNREF(iface,ast_smdi_interface_destroy);
					return NULL;
				}
				
				ASTOBJ_INIT(md_msg);

				/* read the message desk number */
				for(i = 0; i < SMDI_MESG_DESK_NUM_LEN; i++)
					md_msg->mesg_desk_num[i] = fgetc(iface->file);

				md_msg->mesg_desk_num[SMDI_MESG_DESK_NUM_LEN] = '\0';

				/* read the message desk terminal number */
				for(i = 0; i < SMDI_MESG_DESK_TERM_LEN; i++)
					md_msg->mesg_desk_term[i] = fgetc(iface->file);

				md_msg->mesg_desk_term[SMDI_MESG_DESK_TERM_LEN] = '\0';

				/* read the message type */
				md_msg->type = fgetc(iface->file);
			   
				/* read the forwarding station number (may be blank) */
				cp = &md_msg->fwd_st[0];
				for (i = 0; i < SMDI_MAX_STATION_NUM_LEN + 1; i++) {
					if((c = fgetc(iface->file)) == ' ') {
						*cp = '\0';
						break;
					}

					/* store c in md_msg->fwd_st */
					if( i >= iface->msdstrip)
						*cp++ = c;
				}

				/* make sure the value is null terminated, even if this truncates it */
				md_msg->fwd_st[SMDI_MAX_STATION_NUM_LEN] = '\0';
				cp = NULL;
				
				/* read the calling station number (may be blank) */
				cp = &md_msg->calling_st[0];
				for (i = 0; i < SMDI_MAX_STATION_NUM_LEN + 1; i++) {
					if (!isdigit((c = fgetc(iface->file)))) {
						*cp = '\0';
						break;
					}

					/* store c in md_msg->calling_st */
					if (i >= iface->msdstrip)
						*cp++ = c;
				}

				/* make sure the value is null terminated, even if this truncates it */
				md_msg->calling_st[SMDI_MAX_STATION_NUM_LEN] = '\0';
				cp = NULL;

				/* add the message to the message queue */
				md_msg->timestamp = ast_tvnow();
				ast_smdi_md_message_push(iface, md_msg);
				ast_log(LOG_DEBUG, "Recieved SMDI MD message on %s\n", iface->name);
				
				ASTOBJ_UNREF(md_msg, ast_smdi_md_message_destroy);

			} else if(c == 'W') { /* MWI message */
				start = 0;

				if (!(mwi_msg = ast_calloc(1, sizeof(*mwi_msg)))) {
					ASTOBJ_UNREF(iface,ast_smdi_interface_destroy);
					return NULL;
				}

				ASTOBJ_INIT(mwi_msg);

				/* discard the 'I' (from 'MWI') */
				fgetc(iface->file);
				
				/* read the forwarding station number (may be blank) */
				cp = &mwi_msg->fwd_st[0];
				for (i = 0; i < SMDI_MAX_STATION_NUM_LEN + 1; i++) {
					if ((c = fgetc(iface->file)) == ' ') {
						*cp = '\0';
						break;
					}

					/* store c in md_msg->fwd_st */
					if (i >= iface->msdstrip)
						*cp++ = c;
				}

				/* make sure the station number is null terminated, even if this will truncate it */
				mwi_msg->fwd_st[SMDI_MAX_STATION_NUM_LEN] = '\0';
				cp = NULL;
				
				/* read the mwi failure cause */
				for (i = 0; i < SMDI_MWI_FAIL_CAUSE_LEN; i++)
					mwi_msg->cause[i] = fgetc(iface->file);

				mwi_msg->cause[SMDI_MWI_FAIL_CAUSE_LEN] = '\0';

				/* add the message to the message queue */
				mwi_msg->timestamp = ast_tvnow();
				ast_smdi_mwi_message_push(iface, mwi_msg);
				ast_log(LOG_DEBUG, "Recieved SMDI MWI message on %s\n", iface->name);
				
				ASTOBJ_UNREF(mwi_msg, ast_smdi_mwi_message_destroy);
			} else {
				ast_log(LOG_ERROR, "Unknown SMDI message type recieved on %s (M%c).\n", iface->name, c);
				start = 0;
			}
		}
	}

	ast_log(LOG_ERROR, "Error reading from SMDI interface %s, stopping listener thread\n", iface->name);
	ASTOBJ_UNREF(iface,ast_smdi_interface_destroy);
	return NULL;
}