/*********************************************************************************************************
* Software License Agreement (BSD License)                                                               *
* Author: Sebastien Decugis <sdecugis@nict.go.jp>							 *
*													 *
* Copyright (c) 2009, WIDE Project and NICT								 *
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#include "fD.h"


/* Add an endpoint information in a list */
int fd_ep_add_merge( struct fd_list * list, sSA * sa, socklen_t sl, uint32_t flags )
{
	struct fd_endpoint * ep;
	struct fd_list * li;
	int cmp = -1;
	
	TRACE_ENTRY("%p %p %u %x", list, sa, sl, flags);
	CHECK_PARAMS( list && sa && (sl <= sizeof(sSS)) );
	
	/* Search place in the list */
	for (li = list->next; li != list; li = li->next) {
		ep = (struct fd_endpoint *)li;
		
		cmp = memcmp(&ep->ss, sa, sl);
		if (cmp >= 0)
			break;
	}
	
	if (cmp) {
		/* new item to be added */
		CHECK_MALLOC( ep = malloc(sizeof(struct fd_endpoint)) );
		memset(ep, 0, sizeof(struct fd_endpoint));
		fd_list_init(&ep->chain, NULL);
		memcpy(&ep->ss, sa, sl);
		
		/* Insert in the list */
		fd_list_insert_before(li, &ep->chain);
	}
	
	/* Merge the flags */
	ep->flags |= flags;
	
	return 0;
}

/* Delete endpoints that do not have a matching flag from a list (0: delete all endpoints) */
int fd_ep_filter( struct fd_list * list, uint32_t flags )
{
	struct fd_list * li;
	
	TRACE_ENTRY("%p %x", list, flags);
	CHECK_PARAMS(list);
	
	for (li = list->next; li != list; li = li->next) {
		struct fd_endpoint * ep = (struct fd_endpoint *)li;
		
		if (! (ep->flags & flags)) {
			li = li->prev;
			fd_list_unlink(&ep->chain);
			free(ep);
		}
	}
	
	return 0;
}

/* Reset the given flag(s) from all items in the list */
int fd_ep_clearflags( struct fd_list * list, uint32_t flags )
{
	struct fd_list * li;
	
	TRACE_ENTRY("%p %x", list, flags);
	CHECK_PARAMS(list);
	
	for (li = list->next; li != list; li = li->next) {
		struct fd_endpoint * ep = (struct fd_endpoint *)li;
		ep->flags &= ~flags;
	}
	
	return 0;
}