app_rpt.c

/*
 * Asterisk -- An open source telephony toolkit.
 *
 * Copyright (C) 2002-2005, Jim Dixon, WB6NIL
 *
 * Jim Dixon, WB6NIL <jim@lambdatel.com>
 * Serious contributions by Steve RoDgers, WA6ZFT <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.
 */

/*
 *
 * Radio Repeater / Remote Base program 
 *  version 0.37 11/3/05
 * 
 * See http://www.zapatatelephony.org/app_rpt.html
 *
 *
 * Repeater / Remote Functions:
 * "Simple" Mode:  * - autopatch access, # - autopatch hangup
 * Normal mode:
 * See the function list in rpt.conf
 *
 *  To send an asterisk (*) while dialing or talking on phone,
 *  use the autopatch acess code.
 *
 *
 * status cmds:
 *
 *  1 - Force ID
 *  2 - Give Time of Day
 *  3 - Give software Version
 *
 * cop (control operator) cmds:
 *
 *  1 - System warm boot
 *  2 - System enable
 *  3 - System disable
 *  4 - Test Tone On
 *  5 - Dump System Variables on Console (debug)
 *  6 - PTT (phone mode only)
 *
 * ilink cmds:
 *
 *  1 - Disconnect specified link
 *  2 - Connect specified link -- monitor only
 *  3 - Connect specified link -- tranceive
 *  4 - Enter command mode on specified link
 *  5 - System status
 *  6 - Disconnect all links
 *
 * remote cmds:
 *
 *  1 - Recall Memory MM  (*000-*099) (Gets memory from rpt.conf)
 *  2 - Set VFO MMMMM*KKK*O   (Mhz digits, Khz digits, Offset)
 *  3 - Set Rx PL Tone HHH*D*
 *  4 - Set Tx PL Tone HHH*D* (Not currently implemented with DHE RBI-1)
 *  5 - Link Status (long)
 *  6 - Set operating mode M (FM, USB, LSB, AM, etc)
 *  100 - RX PL off (Default)
 *  101 - RX PL On
 *  102 - TX PL Off (Default)
 *  103 - TX PL On
 *  104 - Low Power
 *  105 - Med Power
 *  106 - Hi Power
 *  107 - Bump Down 20 Hz
 *  108 - Bump Down 100 Hz
 *  109 - Bump Down 500 Hz
 *  110 - Bump Up 20 Hz
 *  111 - Bump Up 100 Hz
 *  112 - Bump Up 500 Hz
 *  113 - Scan Down Slow
 *  114 - Scan Down Medium
 *  115 - Scan Down Fast
 *  116 - Scan Up Slow
 *  117 - Scan Up Medium
 *  118 - Scan Up Fast
 *  119 - Transmit allowing auto-tune
 *  140 - Link Status (brief)
 *
 *
*/

/* The following is JUST GROSS!! There is some soft of underlying problem,
   probably in channel_iax2.c, that causes an IAX2 connection to sometimes
   stop transmitting randomly. We have been working for weeks to try to
   locate it and fix it, but to no avail We finally decided to put our
   tail between our legs, and just make the radio system re-connect upon
   network failure. This just shouldnt have to be done. For normal operation,
   comment-out the following line */
#define	RECONNECT_KLUDGE 

/* maximum digits in DTMF buffer, and seconds after * for DTMF command timeout */

#define	MAXDTMF 32
#define	DTMF_TIMEOUT 3

#define	DISC_TIME 10000  /* report disc after 10 seconds of no connect */
#define	MAX_RETRIES 5

#define	REDUNDANT_TX_TIME 2000

#define	RETRY_TIMER_MS 5000

#define	MAXREMSTR 15

#define	NODES "nodes"
#define MEMORY "memory"
#define	FUNCTIONS "functions"
#define TELEMETRY "telemetry"
#define MORSE "morse"
#define	FUNCCHAR '*'
#define	ENDCHAR '#'

#define	DEFAULT_IOBASE 0x378

#define	MAXCONNECTTIME 5000

#define MAXNODESTR 300

#define ACTIONSIZE 32

#define TELEPARAMSIZE 256

#define REM_SCANTIME 100


enum {REM_OFF,REM_MONITOR,REM_TX};

enum{ID,PROC,TERM,COMPLETE,UNKEY,REMDISC,REMALREADY,REMNOTFOUND,REMGO,
	CONNECTED,CONNFAIL,STATUS,TIMEOUT,ID1, STATS_TIME,
	STATS_VERSION, IDTALKOVER, ARB_ALPHA, TEST_TONE, REV_PATCH};

enum {REM_SIMPLEX,REM_MINUS,REM_PLUS};

enum {REM_LOWPWR,REM_MEDPWR,REM_HIPWR};

enum {DC_INDETERMINATE, DC_REQ_FLUSH, DC_ERROR, DC_COMPLETE, DC_DOKEY};

enum {SOURCE_RPT, SOURCE_LNK, SOURCE_RMT, SOURCE_PHONE, SOURCE_DPHONE};

enum {DLY_TELEM, DLY_ID, DLY_UNKEY, DLY_CALLTERM};

enum {REM_MODE_FM,REM_MODE_USB,REM_MODE_LSB,REM_MODE_AM};

enum {HF_SCAN_OFF,HF_SCAN_DOWN_SLOW,HF_SCAN_DOWN_QUICK,HF_SCAN_DOWN_FAST,HF_SCAN_UP_SLOW,HF_SCAN_UP_QUICK,HF_SCAN_UP_FAST};

#include "asterisk.h"

ASTERISK_FILE_VERSION(__FILE__, "$Revision$")

#include <signal.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <search.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#include <dirent.h>
#include <ctype.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/file.h>
#include <sys/ioctl.h>
#include <sys/io.h>
#include <math.h>
#include <tonezone.h>
#include <linux/zaptel.h>
#include <netinet/in.h>
#include <arpa/inet.h>

#include "asterisk/utils.h"
#include "asterisk/lock.h"
#include "asterisk/file.h"
#include "asterisk/logger.h"
#include "asterisk/channel.h"
#include "asterisk/callerid.h"
#include "asterisk/pbx.h"
#include "asterisk/module.h"
#include "asterisk/translate.h"
#include "asterisk/features.h"
#include "asterisk/options.h"
#include "asterisk/cli.h"
#include "asterisk/config.h"
#include "asterisk/say.h"
#include "asterisk/localtime.h"

static  char *tdesc = "Radio Repeater / Remote Base  version 0.37  11/03/2005";

static char *app = "Rpt";

static char *synopsis = "Radio Repeater/Remote Base Control System";

static char *descrip = 
"  Rpt(nodename[|options]):  Radio Remote Link or Remote Base Link Endpoint Process.\n"
"\n"
"    Not specifying an option puts it in normal endpoint mode (where source\n"
"    IP and nodename are verified).\n"
"\n"
"    Options are as follows:\n"
"\n"
"        X - Normal endpoint mode WITHOUT security check. Only specify\n"
"            this if you have checked security already (like with an IAX2\n"
"            user/password or something).\n"
"\n"
"        Rannounce-string[|timeout[|timeout-destination]] - Amateur Radio\n"
"            Reverse Autopatch. Caller is put on hold, and announcement (as\n"
"            specified by the 'announce-string') is played on radio system.\n"
"            Users of radio system can access autopatch, dial specified\n"
"            code, and pick up call. Announce-string is list of names of\n"
"            recordings, or \"PARKED\" to substitute code for un-parking,\n"
"            or \"NODE\" to substitute node number.\n"
"\n"
"        P - Phone Control mode. This allows a regular phone user to have\n"
"            full control and audio access to the radio system. For the\n"
"            user to have DTMF control, the 'phone_functions' parameter\n"
"            must be specified for the node in 'rpt.conf'. An additional\n"
"            function (cop,6) must be listed so that PTT control is available.\n"
"\n"
"        D - Dumb Phone Control mode. This allows a regular phone user to\n"
"            have full control and audio access to the radio system. In this\n"
"            mode, the PTT is activated for the entire length of the call.\n"
"            For the user to have DTMF control (not generally recomended in\n"
"            this mode), the 'dphone_functions' parameter must be specified\n"
"            for the node in 'rpt.conf'. Otherwise no DTMF control will be\n"
"            available to the phone user.\n"
"\n";

static int debug = 0;  /* Set this >0 for extra debug output */
static int nrpts = 0;

char *discstr = "!!DISCONNECT!!";
static char *remote_rig_ft897="ft897";
static char *remote_rig_rbi="rbi";

struct	ast_config *cfg;

STANDARD_LOCAL_USER;
LOCAL_USER_DECL;

#define	MSWAIT 200
#define	HANGTIME 5000
#define	TOTIME 180000
#define	IDTIME 300000
#define	MAXRPTS 20
#define POLITEID 30000
#define FUNCTDELAY 1500

static  pthread_t rpt_master_thread;

struct rpt;

struct rpt_link
{
	struct rpt_link *next;
	struct rpt_link *prev;
	char	mode;			/* 1 if in tx mode */
	char	isremote;
	char	phonemode;
	char	name[MAXNODESTR];	/* identifier (routing) string */
	char	lasttx;
	char	lastrx;
	char	connected;
	char	hasconnected;
	char	outbound;
	char	disced;
	char	killme;
	long	elaptime;
	long	disctime;
	long 	retrytimer;
	long	retxtimer;
	int	retries;
	struct ast_channel *chan;	
	struct ast_channel *pchan;	
} ;

struct rpt_tele
{
	struct rpt_tele *next;
	struct rpt_tele *prev;
	struct rpt *rpt;
	struct ast_channel *chan;
	int	mode;
	struct rpt_link mylink;
	char param[TELEPARAMSIZE];
	pthread_t threadid;
} ;

struct function_table_tag
{
	char action[ACTIONSIZE];
	int (*function)(struct rpt *myrpt, char *param, char *digitbuf, 
		int command_source, struct rpt_link *mylink);
} ;

/* Used to store the morse code patterns */

struct morse_bits
{		  
	int len;
	int ddcomb;
} ;

struct telem_defaults
{
	char name[20];
	char value[80];
} ;


static struct rpt
{
	char *name;
	ast_mutex_t lock;
	char *rxchanname;
	char *txchanname;
	char *ourcontext;
	char *ourcallerid;
	char *acctcode;
	char *ident;
	char *tonezone;
	char *functions;
	char *link_functions;
	char *phone_functions;
	char *dphone_functions;
	char *nodes;
	struct rpt_link links;
	int hangtime;
	int totime;
	int idtime;
	int unkeytocttimer;
	char keyed;
	char exttx;
	char localtx;
	char remoterx;
	char remotetx;
	char remoteon;
	char simple;
	char *remote;
	char tounkeyed;
	char tonotify;
	char enable;
	char dtmfbuf[MAXDTMF];
	char rem_dtmfbuf[MAXDTMF];
	char cmdnode[50];
	struct ast_channel *rxchannel,*txchannel;
	struct ast_channel *pchannel,*txpchannel, *remchannel;
	struct rpt_tele tele;
	pthread_t rpt_call_thread,rpt_thread;
	time_t rem_dtmf_time,dtmf_time_rem;
	int tailtimer,totimer,idtimer,txconf,conf,callmode,cidx,scantimer;
	int mustid;
	int politeid;
	int dtmfidx,rem_dtmfidx;
	long	retxtimer;
	char mydtmf;
	int iobase;
	char exten[AST_MAX_EXTENSION];
	char freq[MAXREMSTR],rxpl[MAXREMSTR],txpl[MAXREMSTR];
	char offset;
	char powerlevel;
	char txplon;
	char rxplon;
	char remmode;
	char tunerequest;
	char hfscanmode;
	int hfscanstatus;
	char lastlinknode[MAXNODESTR];
	char funcchar;
	char endchar;
	char stopgen;
	int phone_longestfunc;
	int dphone_longestfunc;
	int link_longestfunc;
	int longestfunc;
	int longestnode;
	int threadrestarts;		
	time_t disgorgetime;
	time_t lastthreadrestarttime;
	char	nobusyout;
} rpt_vars[MAXRPTS];	

/*
* CLI extensions
*/

/* Debug mode */
static int rpt_do_debug(int fd, int argc, char *argv[]);

static char debug_usage[] =
"Usage: rpt debug level {0-7}\n"
"       Enables debug messages in app_rpt\n";
                                                                                                                                
static struct ast_cli_entry  cli_debug =
        { { "rpt", "debug", "level" }, rpt_do_debug, "Enable app_rpt debugging", debug_usage };



/*
* Telemetry defaults
*/


static struct telem_defaults tele_defs[] = {
	{"ct1","|t(350,0,100,3072)(500,0,100,3072)(660,0,100,3072)"},
	{"ct2","|t(660,880,150,3072)"},
	{"ct3","|t(440,0,150,3072)"},
	{"ct4","|t(550,0,150,3072)"},
	{"ct5","|t(660,0,150,3072)"},
	{"ct6","|t(880,0,150,3072)"},
	{"ct7","|t(660,440,150,3072)"},
	{"ct8","|t(700,1100,150,3072)"},
	{"remotemon","|t(1600,0,75,2048)"},
	{"remotetx","|t(2000,0,75,2048)(0,0,75,0)(1600,0,75,2048)"},
	{"cmdmode","|t(900,904,200,2048)"},
	{"functcomplete","|t(1000,0,100,2048)(0,0,100,0)(1000,0,100,2048)"}
} ;

/*
* Forward decl's - these suppress compiler warnings when funcs coded further down the file than thier invokation
*/

static int setrbi(struct rpt *myrpt);



/*
* Define function protos for function table here
*/

static int function_ilink(struct rpt *myrpt, char *param, char *digitbuf, int command_source, struct rpt_link *mylink);
static int function_autopatchup(struct rpt *myrpt, char *param, char *digitbuf, int command_source, struct rpt_link *mylink);
static int function_autopatchdn(struct rpt *myrpt, char *param, char *digitbuf, int command_source, struct rpt_link *mylink);
static int function_status(struct rpt *myrpt, char *param, char *digitbuf, int command_source, struct rpt_link *mylink);
static int function_cop(struct rpt *myrpt, char *param, char *digitbuf, int command_source, struct rpt_link *mylink);
static int function_remote(struct rpt *myrpt, char *param, char *digitbuf, int command_source, struct rpt_link *mylink);
/*
* Function table
*/

static struct function_table_tag function_table[] = {
	{"cop", function_cop},
	{"autopatchup", function_autopatchup},
	{"autopatchdn", function_autopatchdn},
	{"ilink", function_ilink},
	{"status", function_status},
	{"remote", function_remote}
} ;
	
static int myatoi(char *str)
{
int	ret;

	if (str == NULL) return -1;
	/* leave this %i alone, non-base-10 input is useful here */
	if (sscanf(str,"%i",&ret) != 1) return -1;
	return ret;
}

/*
* Enable or disable debug output at a given level at the console
*/
                                                                                                                                 
static int rpt_do_debug(int fd, int argc, char *argv[])
{
	int newlevel;

        if (argc != 4)
                return RESULT_SHOWUSAGE;
        newlevel = myatoi(argv[3]);
        if((newlevel < 0) || (newlevel > 7))
                return RESULT_SHOWUSAGE;
        if(newlevel)
                ast_cli(fd, "app_rpt Debugging enabled, previous level: %d, new level: %d\n", debug, newlevel);
        else
                ast_cli(fd, "app_rpt Debugging disabled\n");

        debug = newlevel;                                                                                                                          
        return RESULT_SUCCESS;
}
                                                                                                                                 


static int play_tone_pair(struct ast_channel *chan, int f1, int f2, int duration, int amplitude)
{
	int res;

        if ((res = ast_tonepair_start(chan, f1, f2, duration, amplitude)))
                return res;
                                                                                                                                            
        while(chan->generatordata) {
		if (ast_safe_sleep(chan,1)) return -1;
	}

        return 0;
}

static int play_tone(struct ast_channel *chan, int freq, int duration, int amplitude)
{
	return play_tone_pair(chan, freq, 0, duration, amplitude);
}

static int play_silence(struct ast_channel *chan, int duration)
{
	return play_tone_pair(chan, 0, 0, duration, 0);
}


static int send_morse(struct ast_channel *chan, char *string, int speed, int freq, int amplitude)
{

static struct morse_bits mbits[] = {
		{0, 0}, /* SPACE */
		{0, 0}, 
		{6, 18},/* " */
		{0, 0},
		{7, 72},/* $ */
		{0, 0},
		{0, 0},
		{6, 30},/* ' */
		{5, 13},/* ( */
		{6, 29},/* ) */
		{0, 0},
		{5, 10},/* + */
		{6, 51},/* , */
		{6, 33},/* - */
		{6, 42},/* . */
		{5, 9}, /* / */
		{5, 31},/* 0 */
		{5, 30},/* 1 */
		{5, 28},/* 2 */
		{5, 24},/* 3 */
		{5, 16},/* 4 */
		{5, 0}, /* 5 */
		{5, 1}, /* 6 */
		{5, 3}, /* 7 */
		{5, 7}, /* 8 */
		{5, 15},/* 9 */
		{6, 7}, /* : */
		{6, 21},/* ; */
		{0, 0},
		{5, 33},/* = */
		{0, 0},
		{6, 12},/* ? */
		{0, 0},
        	{2, 2}, /* A */
 		{4, 1}, /* B */
		{4, 5}, /* C */
		{3, 1}, /* D */
		{1, 0}, /* E */
		{4, 4}, /* F */
		{3, 3}, /* G */
		{4, 0}, /* H */
		{2, 0}, /* I */
		{4, 14},/* J */
		{3, 5}, /* K */
		{4, 2}, /* L */
		{2, 3}, /* M */
		{2, 1}, /* N */
		{3, 7}, /* O */
		{4, 6}, /* P */
		{4, 11},/* Q */
		{3, 2}, /* R */
		{3, 0}, /* S */
		{1, 1}, /* T */
		{3, 4}, /* U */
		{4, 8}, /* V */
		{3, 6}, /* W */
		{4, 9}, /* X */
		{4, 13},/* Y */
		{4, 3}  /* Z */
	};


	int dottime;
	int dashtime;
	int intralettertime;
	int interlettertime;
	int interwordtime;
	int len, ddcomb;
	int res;
	int c;
	int i;
	int flags;
			
	res = 0;
	
	/* Approximate the dot time from the speed arg. */
	
	dottime = 900/speed;
	
	/* Establish timing releationships */
	
	dashtime = 3 * dottime;
	intralettertime = dottime;
	interlettertime = dottime * 4 ;
	interwordtime = dottime * 7;
	
	for(;(*string) && (!res); string++){
	
		c = *string;
		
		/* Convert lower case to upper case */
		
		if((c >= 'a') && (c <= 'z'))
			c -= 0x20;
		
		/* Can't deal with any char code greater than Z, skip it */
		
		if(c  > 'Z')
			continue;
		
		/* If space char, wait the inter word time */
					
		if(c == ' '){
			if(!res)
				res = play_silence(chan, interwordtime);
			continue;
		}
		
		/* Subtract out control char offset to match our table */
		
		c -= 0x20;
		
		/* Get the character data */
		
		len = mbits[c].len;
		ddcomb = mbits[c].ddcomb;
		
		/* Send the character */
		
		for(; len ; len--){
			if(!res)
				res = play_tone(chan, freq, (ddcomb & 1) ? dashtime : dottime, amplitude);
			if(!res)
				res = play_silence(chan, intralettertime);
			ddcomb >>= 1;
		}
		
		/* Wait the interletter time */
		
		if(!res)
			res = play_silence(chan, interlettertime - intralettertime);
	}
	
	/* Wait for all the frames to be sent */
	
	if (!res) 
		res = ast_waitstream(chan, "");
	ast_stopstream(chan);
	
	/*
	* Wait for the zaptel driver to physically write the tone blocks to the hardware
	*/

	for(i = 0; i < 20 ; i++){
		flags =  ZT_IOMUX_WRITEEMPTY | ZT_IOMUX_NOWAIT; 
		res = ioctl(chan->fds[0], ZT_IOMUX, &flags);
		if(flags & ZT_IOMUX_WRITEEMPTY)
			break;
		if( ast_safe_sleep(chan, 50)){
			res = -1;
			break;
		}
	}

	
	return res;
}

static int send_tone_telemetry(struct ast_channel *chan, char *tonestring)
{
	char *stringp;
	char *tonesubset;
	int f1,f2;
	int duration;
	int amplitude;
	int res;
	int i;
	int flags;
	
	res = 0;
	
	stringp = ast_strdupa(tonestring);

	for(;tonestring;){
		tonesubset = strsep(&stringp,")");
		if(!tonesubset)
			break;
		if(sscanf(tonesubset,"(%d,%d,%d,%d", &f1, &f2, &duration, &amplitude) != 4)
			break;
		res = play_tone_pair(chan, f1, f2, duration, amplitude);
		if(res)
			break;
	}
	if(!res)
		res = play_tone_pair(chan, 0, 0, 100, 0); /* This is needed to ensure the last tone segment is timed correctly */
	
	if (!res) 
		res = ast_waitstream(chan, "");
	ast_stopstream(chan);

	/*
	* Wait for the zaptel driver to physically write the tone blocks to the hardware
	*/

	for(i = 0; i < 20 ; i++){
		flags =  ZT_IOMUX_WRITEEMPTY | ZT_IOMUX_NOWAIT; 
		res = ioctl(chan->fds[0], ZT_IOMUX, &flags);
		if(flags & ZT_IOMUX_WRITEEMPTY)
			break;
		if( ast_safe_sleep(chan, 50)){
			res = -1;
			break;
		}
	}
		
	return res;
		
}
	

static int sayfile(struct ast_channel *mychannel,char *fname)
{
int	res;

	res = ast_streamfile(mychannel, fname, mychannel->language);
	if (!res) 
		res = ast_waitstream(mychannel, "");
	else
		 ast_log(LOG_WARNING, "ast_streamfile failed on %s\n", mychannel->name);
	ast_stopstream(mychannel);
	return res;
}

static int saycharstr(struct ast_channel *mychannel,char *str)
{
int	res;

	res = ast_say_character_str(mychannel,str,NULL,mychannel->language);
	if (!res) 
		res = ast_waitstream(mychannel, "");
	else
		 ast_log(LOG_WARNING, "ast_streamfile failed on %s\n", mychannel->name);
	ast_stopstream(mychannel);
	return res;
}

static int saynum(struct ast_channel *mychannel, int num)
{
	int res;
	res = ast_say_number(mychannel, num, NULL, mychannel->language, NULL);
	if(!res)
		res = ast_waitstream(mychannel, "");
	else
		ast_log(LOG_WARNING, "ast_streamfile failed on %s\n", mychannel->name);
	ast_stopstream(mychannel);
	return res;
}


/* Retrieve an int from a config file */
                                                                                
static int retrieve_astcfgint(char *category, char *name, int min, int max, int defl)
{
        char *var;
        int ret;
                                                                                
        var = ast_variable_retrieve(cfg, category, name);
        if(var){
                ret = myatoi(var);
                if(ret < min)
                        ret = min;
                if(ret > max)
                        ret = max;
        }
        else
                ret = defl;
        return ret;
}

static int telem_any(struct ast_channel *chan, char *entry)
{
	int res;
	char c;
	
	static int morsespeed;
	static int morsefreq;
	static int morseampl;
	static int morseidfreq = 0;
	static int morseidampl;
	static char mcat[] = MORSE;
	
	res = 0;
	
	if(!morseidfreq){ /* Get the morse parameters if not already loaded */
		morsespeed = retrieve_astcfgint( mcat, "speed", 5, 20, 20);
        	morsefreq = retrieve_astcfgint( mcat, "frequency", 300, 3000, 800);
        	morseampl = retrieve_astcfgint( mcat, "amplitude", 200, 8192, 4096);
		morseidampl = retrieve_astcfgint( mcat, "idamplitude", 200, 8192, 2048);
		morseidfreq = retrieve_astcfgint( mcat, "idfrequency", 300, 3000, 330);	
	}
	
	/* Is it a file, or a tone sequence? */
			
	if(entry[0] == '|'){
		c = entry[1];
		if((c >= 'a')&&(c <= 'z'))
			c -= 0x20;
	
		switch(c){
			case 'I': /* Morse ID */
				res = send_morse(chan, entry + 2, morsespeed, morseidfreq, morseidampl);
				break;
			
			case 'M': /* Morse Message */
				res = send_morse(chan, entry + 2, morsespeed, morsefreq, morseampl);
				break;
			
			case 'T': /* Tone sequence */
				res = send_tone_telemetry(chan, entry + 2);
				break;
			default:
				res = -1;
		}
	}
	else
		res = sayfile(chan, entry); /* File */
	return res;
}

/*
* This function looks up a telemetry name in the config file, and does a telemetry response as configured.
*
* 4 types of telemtry are handled: Morse ID, Morse Message, Tone Sequence, and a File containing a recording.
*/

static int telem_lookup(struct ast_channel *chan, char *node, char *name)
{
	
	int res;
	int i;
	char *entry;
	char *telemetry;
	char *telemetry_save;

	res = 0;
	telemetry_save = NULL;
	entry = NULL;
	
	
	/* Retrieve the section name for telemetry from the node section */
	
	telemetry = ast_variable_retrieve(cfg, node, TELEMETRY);
	if(telemetry){
		telemetry_save = ast_strdupa(telemetry);
		if(!telemetry_save){
			ast_log(LOG_WARNING,"ast_strdupa() failed in telem_lookup()\n");
			return res;
		}
		entry = ast_variable_retrieve(cfg, telemetry_save, name);
	}
	
	/* Try to look up the telemetry name */
	
	if(!entry){
		/* Telemetry name wasn't found in the config file, use the default */
		for(i = 0; i < sizeof(tele_defs)/sizeof(struct telem_defaults) ; i++){
			if(!strcasecmp(tele_defs[i].name, name))
				entry = tele_defs[i].value;
		}
	}
	if(entry)	
		telem_any(chan, entry);
	else{
		ast_log(LOG_WARNING, "Telemetry name not found: %s\n", name);
		res = -1;
	}
	return res;
}

/*
* Retrieve a wait interval
*/

static int get_wait_interval(struct rpt *myrpt, int type)
{
        int interval;
        char *wait_times;
        char *wait_times_save;
                                                                                                                  
        wait_times_save = NULL;
        wait_times = ast_variable_retrieve(cfg, myrpt->name, "wait_times");
                                                                                                                  
        if(wait_times){
                wait_times_save = ast_strdupa(wait_times);
                if(!wait_times_save){
                        ast_log(LOG_WARNING, "Out of memory in wait_interval()\n");
                        wait_times = NULL;
                }
        }
                                                                                                                  
        switch(type){
                case DLY_TELEM:
                        if(wait_times)
                                interval = retrieve_astcfgint(wait_times_save, "telemwait", 500, 5000, 1000);
                        else
                                interval = 1000;
                        break;
                                                                                                                  
                case DLY_ID:
                        if(wait_times)
                                interval = retrieve_astcfgint(wait_times_save, "idwait",250,5000,500);
                        else
                                interval = 500;
                        break;
                                                                                                                  
                case DLY_UNKEY:
                        if(wait_times)
                                interval = retrieve_astcfgint(wait_times_save, "unkeywait",500,5000,1000);
                        else
                                interval = 1000;
                        break;
                                                                                                                  
                case DLY_CALLTERM:
                        if(wait_times)
                                interval = retrieve_astcfgint(wait_times_save, "calltermwait",500,5000,1500);
                        else
                                interval = 1500;
                        break;
                                                                                                                  
                default:
                        return 0;
        }
	return interval;
}                                                                                                                  


/*
* Wait a configurable interval of time 
*/


static void wait_interval(struct rpt *myrpt, int type, struct ast_channel *chan)
{
	int interval;
	if((interval = get_wait_interval(myrpt, type)))
		ast_safe_sleep(chan,interval);
	return;
}


static void *rpt_tele_thread(void *this)
{
ZT_CONFINFO ci;  /* conference info */
int	res = 0,haslink,hastx,hasremote,imdone = 0, unkeys_queued, x;
struct	rpt_tele *mytele = (struct rpt_tele *)this;
struct  rpt_tele *tlist;
struct	rpt *myrpt;
struct	rpt_link *l,*m,linkbase;
struct	ast_channel *mychannel;
int vmajor, vminor;
char *p,*ct,*ct_copy,*ident, *nodename;
time_t t;
struct tm localtm;


	/* get a pointer to myrpt */
	myrpt = mytele->rpt;

	/* Snag copies of a few key myrpt variables */
	ast_mutex_lock(&myrpt->lock);
	nodename = ast_strdupa(myrpt->name);
	ident = ast_strdupa(myrpt->ident);
	ast_mutex_unlock(&myrpt->lock);
	
	
	/* allocate a pseudo-channel thru asterisk */
	mychannel = ast_request("zap",AST_FORMAT_SLINEAR,"pseudo",NULL);
	if (!mychannel)
	{
		fprintf(stderr,"rpt:Sorry unable to obtain pseudo channel\n");
		ast_mutex_lock(&myrpt->lock);
		remque((struct qelem *)mytele);
		ast_mutex_unlock(&myrpt->lock);
		free(mytele);		
		pthread_exit(NULL);
	}