isdn_lib.c

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	if (ret < mISDN_HEADER_LEN) {
	noentity:
		fprintf(stderr, "cannot request MGR_NEWENTITY from mISDN: %s\n",strerror(errno));
		exit(-1);
	}
  
	entity = frm->dinfo & 0xffff ;
  
	if (!entity)
		goto noentity;

	return midev;
  
}

void te_lib_destroy(int midev)
{
	char buf[1024];
	mISDN_write_frame(midev, buf, 0, MGR_DELENTITY | REQUEST, entity, 0, NULL, TIMEOUT_1SEC);

	cb_log(4, 0, "Entetity deleted\n");
	mISDN_close(midev);
	cb_log(4, 0, "midev closed\n");
}



void misdn_lib_transfer(struct misdn_bchannel* holded_bc)
{
	holded_bc->holded=0;
}

struct misdn_bchannel *manager_find_bc_by_pid(int pid)
{
	struct misdn_stack *stack;
	int i;
  
	for (stack=glob_mgr->stack_list;
	     stack;
	     stack=stack->next) {
		for (i=0; i<stack->b_num; i++)
			if (stack->bc[i].pid == pid) return &stack->bc[i];
	}
  
	return NULL;
}

struct misdn_bchannel *manager_find_bc_holded(struct misdn_bchannel* bc)
{
	struct misdn_stack *stack=get_stack_by_bc(bc);
	return find_bc_holded(stack);
}



struct misdn_bchannel* misdn_lib_get_free_bc(int port, int channel)
{
	struct misdn_stack *stack;
	int i;
	
	if (channel < 0 || channel > MAX_BCHANS)
		return NULL;

	for (stack=glob_mgr->stack_list; stack; stack=stack->next) {
    
		if (stack->port == port) {
			if (channel > 0) {
				if (channel <= stack->b_num) {
					for (i = 0; i < stack->b_num; i++) {
						if (stack->bc[i].in_use && stack->bc[i].channel == channel) {
							return NULL;
						}
					}
				} else
					return NULL;
			}
			for (i = 0; i < stack->b_num; i++) {
				if (!stack->bc[i].in_use) {
					stack->bc[i].channel = channel;
					stack->bc[i].channel_preselected = channel?1:0;
					stack->bc[i].in_use = 1;
					return &stack->bc[i];
				}
			}
			return NULL;
		}
	}
	return NULL;
}

void misdn_lib_log_ies(struct misdn_bchannel *bc)
{
	if (!bc) return;

	struct misdn_stack *stack=get_stack_by_bc(bc);

	if (!stack) return;
	
	cb_log(2, stack->port, " --> mode:%s cause:%d ocause:%d rad:%s\n", stack->mode==NT_MODE?"NT":"TE", bc->cause, bc->out_cause, bc->rad);
	
	cb_log(2, stack->port,
	       " --> info_dad:%s onumplan:%c dnumplan:%c rnumplan:%c\n",
	       bc->info_dad,
	       bc->onumplan>=0?'0'+bc->onumplan:' ',
	       bc->dnumplan>=0?'0'+bc->dnumplan:' ',
	       bc->rnumplan>=0?'0'+bc->rnumplan:' '
		);
	
	cb_log(2, stack->port, " --> channel:%d caps:%s pi:%x keypad:%s\n", bc->channel, bearer2str(bc->capability),bc->progress_indicator, bc->keypad);

	cb_log(3, stack->port, " --> urate:%d rate:%d mode:%d user1:%d\n", bc->urate, bc->rate, bc->mode,bc->user1);
	
	cb_log(3, stack->port, " --> pid:%d addr:%x l3id:%x\n", bc->pid, bc->addr, bc->l3_id);

	cb_log(4, stack->port, " --> bc:%x h:%d sh:%d\n", bc, bc->holded, bc->stack_holder);
}

int misdn_lib_send_event(struct misdn_bchannel *bc, enum event_e event )
{
	msg_t *msg; 
	int err = -1 ;
  
	if (!bc) goto ERR; 
	
	struct misdn_stack *stack=get_stack_by_bc(bc);
	
	if ( stack->mode == NT_MODE && !stack->l1link) {
		/** Queue Event **/
		bc->evq=event;
		cb_log(1, stack->port, "Queueing Event %s because L1 is down (btw. Activating L1)\n", isdn_get_info(msgs_g, event, 0));
		{ /* Pull Up L1 */ 
			iframe_t act;
			act.prim = PH_ACTIVATE | REQUEST; 
			act.addr = (stack->upper_id & IF_ADDRMASK) | IF_DOWN ;
			act.dinfo = 0;
			act.len = 0;
			mISDN_write(glob_mgr->midev, &act, mISDN_HEADER_LEN+act.len, TIMEOUT_1SEC);
		}
		
		return 0;
	}
	
	cb_log(1, stack->port, "I SEND:%s oad:%s dad:%s port:%d\n", isdn_get_info(msgs_g, event, 0), bc->oad, bc->dad, stack->port);
	misdn_lib_log_ies(bc);
	
	switch (event) {
	case EVENT_SETUP:
		if (create_process(glob_mgr->midev, bc)<0) {
			cb_log(0,  stack->port, " No free channel at the moment @ send_event\n");
			err=-ENOCHAN;
			goto ERR;
		}
		break;

	case EVENT_CONNECT:
	case EVENT_PROGRESS:
	case EVENT_ALERTING:
	case EVENT_PROCEEDING:
	case EVENT_SETUP_ACKNOWLEDGE:
	case EVENT_RETRIEVE_ACKNOWLEDGE:
		
		if (stack->mode == NT_MODE) {
			if (bc->channel <=0 ) { /*  else we have the channel already */
				bc->channel = find_free_chan_in_stack(stack, 0);
				if (!bc->channel) {
					cb_log(0, stack->port, " No free channel at the moment\n");
					err=-ENOCHAN;
					goto ERR;
				}
			}
			/* Its that i generate channels */
		}
		
		setup_bc(bc);
		
		
		if ( event == EVENT_CONNECT ) {
			if ( *bc->crypt_key ) {
				cb_log(4, stack->port,  " --> ENABLING BLOWFISH port:%d channel:%d oad%d:%s dad%d:%s \n", stack->port, bc->channel, bc->onumplan,bc->oad, bc->dnumplan,bc->dad);
				
				manager_ph_control_block(bc,  BF_ENABLE_KEY, bc->crypt_key, strlen(bc->crypt_key) );
			}
			
			if ( misdn_cap_is_speech(bc->capability)) {
				if (!bc->nodsp) manager_ph_control(bc,  DTMF_TONE_START, 0);
				
				if (bc->ec_enable) manager_ec_enable(bc);
				
				if (bc->txgain != 0) {
					cb_log(4, stack->port,  "--> Changing txgain to %d\n", bc->txgain);
					manager_ph_control(bc, VOL_CHANGE_TX, bc->txgain);
				}
				
				if ( bc->rxgain != 0 ) {
					cb_log(4, stack->port,  "--> Changing rxgain to %d\n", bc->rxgain);
					manager_ph_control(bc, VOL_CHANGE_RX, bc->rxgain);
				}
			}
		}
		
		if (event == EVENT_RETRIEVE_ACKNOWLEDGE) {
			manager_bchannel_activate(bc);
		}
		
		break;
    
	case EVENT_HOLD_ACKNOWLEDGE:
	{
		struct misdn_bchannel *holded_bc=malloc(sizeof(struct misdn_bchannel));
		
		memcpy(holded_bc,bc,sizeof(struct misdn_bchannel));
		
		holded_bc->holded=1;
		stack_holder_add(stack,holded_bc);
		
		if (stack->mode == NT_MODE) {
			empty_chan_in_stack(stack,bc->channel);
			empty_bc(bc);
			clean_up_bc(bc);
		}
		
		/** we set it up later at RETRIEVE_ACK again.**/
		holded_bc->upset=0;
		holded_bc->active=0;
		
		cb_event( EVENT_NEW_BC, holded_bc, glob_mgr->user_data);
	}
	break;
	
	case EVENT_RELEASE:
		break;
		
	case EVENT_RELEASE_COMPLETE:
		empty_chan_in_stack(stack,bc->channel);
		empty_bc(bc);
		clean_up_bc(bc);
		break;
    
	case EVENT_CONNECT_ACKNOWLEDGE:
		
		if (misdn_cap_is_speech(bc->capability)) {
			if (  !bc->nodsp) manager_ph_control(bc,  DTMF_TONE_START, 0);
			if (bc->ec_enable) manager_ec_enable(bc);
			if ( bc->txgain != 0 ) {
				cb_log(4, stack->port, "--> Changing txgain to %d\n", bc->txgain);
				manager_ph_control(bc, VOL_CHANGE_TX, bc->txgain);
			}
			if ( bc->rxgain != 0 ) {
				cb_log(4, stack->port, "--> Changing rxgain to %d\n", bc->rxgain);
				manager_ph_control(bc, VOL_CHANGE_RX, bc->rxgain);
			}
		}
		break;
    
	default:
		break;
	}
  
	/* Later we should think about sending bchannel data directly to misdn. */
	msg = isdn_msg_build_event(msgs_g, bc, event, stack->mode==NT_MODE?1:0);
	msg_queue_tail(&stack->downqueue, msg);
	sem_post(&glob_mgr->new_msg);
  
	return 0;
  
 ERR:
	return -1; 
}



int manager_isdn_handler(iframe_t *frm ,msg_t *msg)
{  

	if (frm->dinfo==(signed long)0xffffffff && frm->prim==(PH_DATA|CONFIRM)) {
		printf("SERIOUS BUG, dinfo == 0xffffffff, prim == PH_DATA | CONFIRM !!!!\n");
	}

	if (handle_timers(msg)) 
		return 0 ;
    
	if (handle_mgmt(msg)) 
		return 0 ;

	if (handle_l2(msg)) 
		return 0 ;

	/* Its important to handle l1 AFTER l2  */
	if (handle_l1(msg)) 
		return 0 ;

	if (handle_bchan(msg)) 
		return 0 ;

	/** Handle L2/3 Signalling after bchans **/ 
	if (handle_frm_nt(msg)) 
		return 0 ;
    
	if (handle_frm(msg)) 
		return 0 ;

	cb_log(0, frm->addr&IF_CONTRMASK, "Unhandled Message: prim %x len %d from addr %x, dinfo %x on port: %d\n",frm->prim, frm->len, frm->addr, frm->dinfo, frm->addr&IF_CONTRMASK);
   
	free_msg(msg);

	return 0;
}




int misdn_lib_get_port_info(int port)
{
	msg_t *msg=alloc_msg(MAX_MSG_SIZE);
	iframe_t *frm;
	struct misdn_stack *stack=find_stack_by_port(port);
	if (!msg) {
		cb_log(0, port, "misgn_lib_get_port: alloc_msg failed!\n");
		return -1;
	}
	frm=(iframe_t*)msg->data;
	if (!stack ) {
		cb_log(0, port, "There is no Stack on Port:%d\n",port);
		return -1;
	}
	/* activate bchannel */
	frm->prim = CC_STATUS_ENQUIRY | REQUEST;
	frm->addr = stack->upper_id;
	frm->dinfo = 0;
	frm->len = 0;
  
	msg_queue_tail(&glob_mgr->activatequeue, msg);
	sem_post(&glob_mgr->new_msg);

  
	return 0; 
}

int misdn_lib_port_restart(int port)
{
	struct misdn_stack *stack=find_stack_by_port(port);
 
	cb_log(0, port, "Restarting Port:%d\n",port);
	if (stack) {
		cb_log(0, port, "Stack:%p\n",stack);

		
		clear_l3(stack);
		
		{
			msg_t *msg=alloc_msg(MAX_MSG_SIZE);
			iframe_t *frm;

			if (!msg) {
				cb_log(0, port, "port_restart: alloc_msg fialed\n");
				return -1;
			}
			
			frm=(iframe_t*)msg->data;
			/* we must activate if we are deactivated */
			/* activate bchannel */
	
			frm->prim = DL_RELEASE | REQUEST;
	
			frm->addr = stack->upper_id ;
			frm->dinfo = 0;
			frm->len = 0;
			msg_queue_tail(&glob_mgr->activatequeue, msg);
			sem_post(&glob_mgr->new_msg);
		}
		return 0;
    
		stack_te_destroy(stack);
      
		{
			struct misdn_stack *tmpstack;
			struct misdn_stack *newstack=stack_te_init(stack->midev ,port, stack->ptp);
      
      
			if (stack == glob_mgr->stack_list) {
				struct misdn_stack *n=glob_mgr->stack_list->next;
				glob_mgr->stack_list = newstack ;
				glob_mgr->stack_list->next = n;
			} else {
				for (tmpstack=glob_mgr->stack_list;
				     tmpstack->next;
				     tmpstack=tmpstack->next) 
					if (tmpstack->next == stack) break;

				if (!tmpstack->next) {
					cb_log(0, port, "Stack to restart not found\n");
					return 0;
				}  else {
					struct misdn_stack *n=tmpstack->next->next;
					tmpstack->next=newstack;
					newstack->next=n;
				}
			}
      
			{
				int i;
				for(i=0;i<newstack->b_num; i++) {
					int r;
					if ((r=init_bc(newstack, &newstack->bc[i], newstack->midev,port,i, "", 1))<0) {
						cb_log(0, port, "Got Err @ init_bc :%d\n",r);
						return 0;
					}
				}
			}
      
			free(stack);
		}
	}

	return 0;
}



sem_t handler_started; 

void manager_event_handler(void *arg)
{
	sem_post(&handler_started); 
	while (1) {
		struct misdn_stack *stack;
		msg_t *msg;
    
		/** wait for events **/
		sem_wait(&glob_mgr->new_msg);
    
		for (msg=msg_dequeue(&glob_mgr->activatequeue);
		     msg;
		     msg=msg_dequeue(&glob_mgr->activatequeue)
			)
		{
	
			iframe_t *frm =  (iframe_t*) msg->data ;

			switch ( frm->prim) {
			case MGR_SETSTACK | REQUEST :
				break;
			default:
				mISDN_write(glob_mgr->midev, frm, mISDN_HEADER_LEN+frm->len, TIMEOUT_1SEC);
				free_msg(msg);
			}
		}

		for (stack=glob_mgr->stack_list;
		     stack;
		     stack=stack->next ) { 
			while ( (msg=msg_dequeue(&stack->downqueue)) ) {
	
				if (stack->mode == NT_MODE ){
	  
					if (stack->nst.manager_l3(&stack->nst, msg))
						cb_log(0, stack->port, "Error@ Sending Message in NT-Stack.\n");
	  
				} else {
					if (msg) {
						iframe_t *frm = (iframe_t *)msg->data;
						struct misdn_bchannel *bc = find_bc_by_l3id(stack, frm->dinfo);
	    
						if (bc) send_msg(glob_mgr->midev, bc, msg);
					}
				}
			}
		}
	}
}


int misdn_lib_maxports_get() { /** BE AWARE WE HAVE NO CB_LOG HERE! **/
	
	int i = mISDN_open();
	int max=0;
	
	if (i<0)
		return -1;

	max = mISDN_get_stack_count(i);
	
	mISDN_close(i);
	
	return max;
}

int misdn_lib_init(char *portlist, struct misdn_lib_iface *iface, void *user_data)
{
	struct misdn_lib *mgr=calloc(1, sizeof(struct misdn_lib));
	char *tok, *tokb;
	char plist[1024];
	int midev;
	int port_count=0;
 
	cb_log = iface->cb_log;
	cb_event = iface->cb_event;
	cb_clearl3_true = iface->cb_clearl3_true;
	
	glob_mgr = mgr;
  
	msg_init();
	debug_init(0 , NULL, NULL, NULL);
	
	if (!portlist || (*portlist == 0) ) return 1;
	
	init_flip_bits();
	
	{
		strncpy(plist,portlist, 1024);
		plist[1023] = 0;
	}
  
	memcpy(tone_425_flip,tone_425,TONE_425_SIZE);
	flip_buf_bits(tone_425_flip,TONE_425_SIZE);

	memcpy(tone_silence_flip,tone_SILENCE,TONE_SILENCE_SIZE);
	flip_buf_bits(tone_silence_flip,TONE_SILENCE_SIZE);
  
	midev=te_lib_init();
	mgr->midev=midev;

	port_count=mISDN_get_stack_count(midev);
  
	msg_queue_init(&mgr->activatequeue);
  
	if (sem_init(&mgr->new_msg, 1, 0)<0)
		sem_init(&mgr->new_msg, 0, 0);
  
	for (tok=strtok_r(plist," ,",&tokb );
	     tok; 
	     tok=strtok_r(NULL," ,",&tokb)) {
		int port = atoi(tok);
		struct misdn_stack *stack;
		static int first=1;
		int ptp=0;
    
		if (strstr(tok, "ptp"))
			ptp=1;

		if (port > port_count) {
			cb_log(0, port, "Couldn't Initialize Port:%d since we have only %d ports\n",port, port_count);
			exit(1);
		}
		stack=stack_te_init(midev, port, ptp);
    
    
    
		if (!stack) {
			perror("init_stack");
			exit(1);
		}
    
		if (stack && first) {
			mgr->stack_list=stack;
			first=0;
			{
				int i;
				for(i=0;i<stack->b_num; i++) {
					int r;
					if ((r=init_bc(stack, &stack->bc[i], stack->midev,port,i, "", 1))<0) {
						cb_log(0, port, "Got Err @ init_bc :%d\n",r);
						exit(1);
					}
				}
			}
      
			continue;
		}
    
		if (stack) {
			struct misdn_stack * help;
			for ( help=mgr->stack_list; help; help=help->next ) 
				if (help->next == NULL) break;
      
      
			help->next=stack;

			{
				int i;
				for(i=0;i<stack->b_num; i++) {
					int r;
					if ((r=init_bc(sta