/* * libpri: An implementation of Primary Rate ISDN * * Written by Mark Spencer <markster@linux-support.net> * * Copyright (C) 2001, Linux Support Services, Inc. * All Rights Reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. *  * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the * GNU General Public License for more details. *  * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  * */ #ifndef _PRI_INTERNAL_H#define _PRI_INTERNAL_H#include <sys/time.h>#define DBGHEAD __FILE__ ":%d %s: "#define DBGINFO __LINE__,__PRETTY_FUNCTION__struct pri_sched {	struct timeval when;	void (*callback)(void *data);	void *data;};struct q921_frame;enum q931_state;enum q931_mode;/* No more than 128 scheduled events */#define MAX_SCHED 128#define MAX_TIMERS 32struct pri {	int fd;				/* File descriptor for D-Channel */	pri_io_cb read_func;		/* Read data callback */	pri_io_cb write_func;		/* Write data callback */	void *userdata;	struct pri *subchannel;	/* Sub-channel if appropriate */	struct pri *master;		/* Master channel if appropriate */	struct pri_sched pri_sched[MAX_SCHED];	/* Scheduled events */	int debug;			/* Debug stuff */	int state;			/* State of D-channel */	int switchtype;		/* Switch type */	int nsf;		/* Network-Specific Facility (if any) */	int localtype;		/* Local network type (unknown, network, cpe) */	int remotetype;		/* Remote network type (unknown, network, cpe) */	int sapi;	int tei;	int protodisc;		/* Q.921 State */	int q921_state;		int window;			/* Max window size */	int windowlen;		/* Fullness of window */	int v_s;			/* Next N(S) for transmission */	int v_a;			/* Last acknowledged frame */	int v_r;			/* Next frame expected to be received */	int v_na;			/* What we've told our peer we've acknowledged */	int solicitfbit;	/* Have we sent an I or S frame with the F-bit set? */	int retrans;		/* Retransmissions */	int sentrej;		/* Are we in reject state */		int cref;			/* Next call reference value */		int busy;			/* Peer is busy */	/* Various timers */	int sabme_timer;	/* SABME retransmit */	int t203_timer;		/* Max idle time */	int t200_timer;		/* T-200 retransmission timer */	/* All ISDN Timer values */	int timers[MAX_TIMERS];	/* Used by scheduler */	struct timeval tv;	int schedev;	pri_event ev;		/* Static event thingy */		/* Q.921 Re-transmission queue */	struct q921_frame *txqueue;		/* Q.931 calls */	q931_call **callpool;	q931_call *localpool;	/* do we do overlap dialing */	int overlapdial;#ifdef LIBPRI_COUNTERS	/* q921/q931 packet counters */	unsigned int q921_txcount;	unsigned int q921_rxcount;	unsigned int q931_txcount;	unsigned int q931_rxcount;#endif	unsigned char last_invoke;	/* Last ROSE invoke ID */	unsigned char sendfacility;};struct pri_sr {	int transmode;	int channel;	int exclusive;	int nonisdn;	char *caller;	int callerplan;	char *callername;	int callerpres;	char *called;	int calledplan;	int userl1;	int numcomplete;	char *redirectingnum;	int redirectingplan;	int redirectingpres;	int redirectingreason;	int justsignalling;	const char *useruserinfo;	int transferable;};/* Internal switch types */#define PRI_SWITCH_GR303_EOC_PATH	19#define PRI_SWITCH_GR303_TMC_SWITCHING	20struct apdu_event {	int message;			/* What message to send the ADPU in */	void (*callback)(void *data);	/* Callback function for when response is received */	void *data;			/* Data to callback */	unsigned char apdu[255];			/* ADPU to send */	int apdu_len; 			/* Length of ADPU */	int sent;  			/* Have we been sent already? */	struct apdu_event *next;	/* Linked list pointer */};/* q931_call datastructure */struct q931_call {	struct pri *pri;	/* PRI */	int cr;				/* Call Reference */	int forceinvert;	/* Force inversion of call number even if 0 */	q931_call *next;	/* Slotmap specified (bitmap of channels 31/24-1) (Channel Identifier IE) (-1 means not specified) */	int slotmap;	/* An explicit channel (Channel Identifier IE) (-1 means not specified) */	int channelno;	/* An explicit DS1 (-1 means not specified) */	int ds1no;	/* Whether or not the ds1 is explicitly identified or implicit.  If implicit	   the bchan is on the same span as the current active dchan (NFAS) */	int ds1explicit;	/* Channel flags (0 means none retrieved) */	int chanflags;		int alive;			/* Whether or not the call is alive */	int acked;			/* Whether setup has been acked or not */	int sendhangupack;	/* Whether or not to send a hangup ack */	int proc;			/* Whether we've sent a call proceeding / alerting */		int ri;				/* Restart Indicator (Restart Indicator IE) */	/* Bearer Capability */	int transcapability;	int transmoderate;	int transmultiple;	int userl1;	int userl2;	int userl3;	int rateadaption;		int sentchannel;	int justsignalling;		/* for a signalling-only connection */	int progcode;			/* Progress coding */	int progloc;			/* Progress Location */		int progress;			/* Progress indicator */	int progressmask;		/* Progress Indicator bitmask */		int notify;				/* Notification */		int causecode;			/* Cause Coding */	int causeloc;			/* Cause Location */	int cause;				/* Cause of clearing */		int peercallstate;		/* Call state of peer as reported */	int ourcallstate;		/* Our call state */	int sugcallstate;		/* Status call state */		int callerplan;	int callerplanani;	int callerpres;			/* Caller presentation */	char callerani[256];	/* Caller */	char callernum[256];	char callername[256];	char keypad_digits[64];		/* Buffer for digits that come in KEYPAD_FACILITY */	int ani2;               /* ANI II */		int calledplan;	int nonisdn;	char callednum[256];	/* Called Number */	int complete;			/* no more digits coming */	int newcall;			/* if the received message has a new call reference value */	int retranstimer;		/* Timer for retransmitting DISC */	int t308_timedout;		/* Whether t308 timed out once */	int redirectingplan;	int redirectingpres;	int redirectingreason;	      	char redirectingnum[256];	/* Number of redirecting party */	char redirectingname[256];	/* Name of redirecting party */	/* Filled in cases of multiple diversions */	int origcalledplan;	int origcalledpres;	int origredirectingreason;	/* Original reason for redirect (in cases of multiple redirects) */	char origcalledname[256];	/* Original name of person being called */	char origcallednum[256];	/* Orignal number of person being called */	int useruserprotocoldisc;	char useruserinfo[256];	char callingsubaddr[256];	/* Calling parties sub address */		long aoc_units;				/* Advice of Charge Units */	struct apdu_event *apdus;	/* APDU queue for call */	int transferable;	unsigned int rlt_call_id;	/* RLT call id */};extern int pri_schedule_event(struct pri *pri, int ms, void (*function)(void *data), void *data);extern pri_event *pri_schedule_run(struct pri *pri);extern void pri_schedule_del(struct pri *pri, int ev);extern pri_event *pri_mkerror(struct pri *pri, char *errstr);extern void pri_message(struct pri *pri, char *fmt, ...);extern void pri_error(struct pri *pri, char *fmt, ...);void libpri_copy_string(char *dst, const char *src, size_t size);#endif