Clif.c_Error

/*==========================================
 * Packet Delegation (called on all packets that require data to be sent to more than one client)
 * functions that are sent solely to one use whose ID it posses use WFIFOSET
 *------------------------------------------*/
int clif_send(const uint8* buf, int len, struct block_list* bl, enum send_target type)
{
	int i;
	struct map_session_data *sd, *tsd;
	struct party_data *p = NULL;
	struct guild *g = NULL;
	struct battleground_data *bg = NULL;
	int x0 = 0, x1 = 0, y0 = 0, y1 = 0, fd;
	struct s_mapiterator* iter;

	if( type != ALL_CLIENT && type != BG_LISTEN )
		nullpo_ret(bl);

	if( type == ALL_REGION && map[bl->m].region_id < 1 )
		return 0; // Not on a Region

	sd = BL_CAST(BL_PC, bl);

	switch(type) {

	case ALL_CLIENT: //All player clients.
	case BG_LISTEN:
		iter = mapit_getallusers();
		while( (tsd = (TBL_PC*)mapit_next(iter)) != NULL )
		{
			if( type == BG_LISTEN && !(tsd->state.bg_listen || tsd->qd) )
				continue;

			if( packet_db[tsd->packet_ver][RBUFW(buf,0)].len )
			{ // packet must exist for the client version
				WFIFOHEAD(tsd->fd, len);
				memcpy(WFIFOP(tsd->fd,0), buf, len);
				WFIFOSET(tsd->fd,len);
			}
		}
		mapit_free(iter);
		break;

	case ALL_SAMEMAP: //All players on the same map
	case ALL_REGION: // All players on the same region
		iter = mapit_getallusers();
		while( (tsd = (TBL_PC*)mapit_next(iter)) != NULL )
		{
			if( ((type == ALL_SAMEMAP && tsd->bl.m == bl->m) || (type == ALL_REGION && map[tsd->bl.m].region_id == map[bl->m].region_id)) && packet_db[tsd->packet_ver][RBUFW(buf,0)].len )
			{ // packet must exist for the client version
				WFIFOHEAD(tsd->fd, len);
				memcpy(WFIFOP(tsd->fd,0), buf, len);
				WFIFOSET(tsd->fd,len);
			}
		}
		mapit_free(iter);
		break;

	case AREA:
	case AREA_WOSC:
		if (sd && bl->prev == NULL) //Otherwise source misses the packet.[Skotlex]
			clif_send (buf, len, bl, SELF);
	case AREA_WOC:
	case AREA_WOS:
		map_foreachinarea(clif_send_sub, bl->m, bl->x-AREA_SIZE, bl->y-AREA_SIZE, bl->x+AREA_SIZE, bl->y+AREA_SIZE,
			BL_PC, buf, len, bl, type);
		break;
	case AREA_CHAT_WOC:
		map_foreachinarea(clif_send_sub, bl->m, bl->x-(AREA_SIZE-5), bl->y-(AREA_SIZE-5),
			bl->x+(AREA_SIZE-5), bl->y+(AREA_SIZE-5), BL_PC, buf, len, bl, AREA_WOC);
		break;
	case LANG_AREA_CHAT_WOC:
	case OTHER_LANG_AREA_CHAT_WOC:
	case FACTION_AREA_CHAT_WOC:
	case OTHER_FACTION_AREA_CHAT_WOC:
	case FACTION_LANG_AREA_CHAT_WOC:
	case FACTION_OTHER_LANG_AREA_CHAT_WOC:
	case OTHER_FACTION_LANG_AREA_CHAT_WOC:
	case OTHER_FACTION_OTHER_LANG_AREA_CHAT_WOC:
		if( !sd ) break;
		map_foreachinarea(clif_send_sub, bl->m, bl->x-(AREA_SIZE-5), bl->y-(AREA_SIZE-5),
			bl->x+(AREA_SIZE-5), bl->y+(AREA_SIZE-5), BL_PC, buf, len, bl, type, sd->status.faction_id, sd->lang_id);
		break;
	case FACTION_AREA_WOS:
		map_foreachinarea(clif_send_sub, bl->m, bl->x-AREA_SIZE, bl->y-AREA_SIZE, bl->x+AREA_SIZE, bl->y+AREA_SIZE,
			BL_PC, buf, len, bl, type);
		break;

	case AREA_IWS:
	case AREA_IWOS:
	case AREA_WOI:
		map_foreachinarea(clif_send_sub, bl->m, bl->x-AREA_SIZE, bl->y-AREA_SIZE, bl->x+AREA_SIZE, bl->y+AREA_SIZE,
			BL_PC, buf, len, bl, type);
		break;

	case CHAT:
	case CHAT_WOS:
	case LANG_CHAT_WOS:
	case OTHER_LANG_CHAT_WOS:
		{
			struct chat_data *cd;
			if (sd) {
				cd = (struct chat_data*)map_id2bl(sd->chatID);
			} else if (bl->type == BL_CHAT) {
				cd = (struct chat_data*)bl;
			} else break;
			if (cd == NULL)
				break;
			for(i = 0; i < cd->users; i++) {
				if( cd->usersd[i] == sd && (type == CHAT_WOS || type == LANG_CHAT_WOS || type == OTHER_LANG_CHAT_WOS) )
					continue;
				if( sd && (type == LANG_CHAT_WOS || type == OTHER_LANG_CHAT_WOS) )
				{
					struct faction_data* fd = NULL;
					bool known;

					if( cd->usersd[i]->status.faction_id ) fd = faction_search(cd->usersd[i]->status.faction_id);
					known = (cd->usersd[i]->lang_id == sd->lang_id || (cd->usersd[i]->lang_mastery&lang_pow[sd->lang_id-1]) || (fd && fd->lang_id == sd->lang_id));

					if( type == LANG_CHAT_WOS && !known )
						continue;
					if( type == OTHER_LANG_CHAT_WOS && known )
						continue;
				}
				if (packet_db[cd->usersd[i]->packet_ver][RBUFW(buf,0)].len) { // packet must exist for the client version
					if ((fd=cd->usersd[i]->fd) >0 && session[fd]) // Added check to see if session exists [PoW]
					{
						WFIFOHEAD(fd,len);
						memcpy(WFIFOP(fd,0), buf, len);
						WFIFOSET(fd,len);
					}
				}
			}
		}
		break;
	case PARTY_AREA:
	case PARTY_AREA_WOS:
		x0 = bl->x - AREA_SIZE;
		y0 = bl->y - AREA_SIZE;
		x1 = bl->x + AREA_SIZE;
		y1 = bl->y + AREA_SIZE;
	case PARTY:
	case PARTY_WOS:
	case PARTY_SAMEMAP:
	case PARTY_SAMEMAP_WOS:
		if (sd && sd->status.party_id)
			p = party_search(sd->status.party_id);

		if (p) {
			for(i=0;i<MAX_PARTY;i++){
				if( (sd = p->data[i].sd) == NULL )
					continue;

				if( !(fd=sd->fd) )
					continue;

				if( sd->bl.id == bl->id && (type == PARTY_WOS || type == PARTY_SAMEMAP_WOS || type == PARTY_AREA_WOS) )
					continue;

				if( type != PARTY && type != PARTY_WOS && bl->m != sd->bl.m )
					continue;

				if( (type == PARTY_AREA || type == PARTY_AREA_WOS) && (sd->bl.x < x0 || sd->bl.y < y0 || sd->bl.x > x1 || sd->bl.y > y1) )
					continue;

				if( packet_db[sd->packet_ver][RBUFW(buf,0)].len )
				{ // packet must exist for the client version
					WFIFOHEAD(fd,len);
					memcpy(WFIFOP(fd,0), buf, len);
					WFIFOSET(fd,len);
				}
			}
			if (!enable_spy) //Skip unnecessary parsing. [Skotlex]
				break;

			iter = mapit_getallusers();
			while( (tsd = (TBL_PC*)mapit_next(iter)) != NULL )
			{
				if( tsd->partyspy == p->party.party_id && packet_db[tsd->packet_ver][RBUFW(buf,0)].len )
				{ // packet must exist for the client version
					WFIFOHEAD(tsd->fd, len);
					memcpy(WFIFOP(tsd->fd,0), buf, len);
					WFIFOSET(tsd->fd,len);
				}
			}
			mapit_free(iter);
		}
		break;

	case DUEL:
	case DUEL_WOS:
		if (!sd || !sd->duel_group) break; //Invalid usage.

		iter = mapit_getallusers();
		while( (tsd = (TBL_PC*)mapit_next(iter)) != NULL )
		{
			if( type == DUEL_WOS && bl->id == tsd->bl.id )
				continue;
			if( sd->duel_group == tsd->duel_group && packet_db[tsd->packet_ver][RBUFW(buf,0)].len )
			{ // packet must exist for the client version
				WFIFOHEAD(tsd->fd, len);
				memcpy(WFIFOP(tsd->fd,0), buf, len);
				WFIFOSET(tsd->fd,len);
			}
		}
		mapit_free(iter);
		break;

	case SELF:
		if (sd && (fd=sd->fd) && packet_db[sd->packet_ver][RBUFW(buf,0)].len) { // packet must exist for the client version
			WFIFOHEAD(fd,len);
			memcpy(WFIFOP(fd,0), buf, len);
			WFIFOSET(fd,len);
		}
		break;

	// New definitions for guilds [Valaris] - Cleaned up and reorganized by [Skotlex]
	case GUILD_AREA:
	case GUILD_AREA_WOS:
		x0 = bl->x - AREA_SIZE;
		y0 = bl->y - AREA_SIZE;
		x1 = bl->x + AREA_SIZE;
		y1 = bl->y + AREA_SIZE;
	case GUILD_SAMEMAP:
	case GUILD_SAMEMAP_WOS:
	case GUILD:
	case GUILD_WOS:
	case GUILD_NOBG:
		if (sd && sd->status.guild_id)
			g = sd->guild;

		if (g) {
			for(i = 0; i < g->max_member; i++) {
				if( (sd = g->member[i].sd) != NULL )
				{
					if( !(fd=sd->fd) )
						continue;

					if( type == GUILD_NOBG && sd->bg_id )
						continue;

					if( sd->bl.id == bl->id && (type == GUILD_WOS || type == GUILD_SAMEMAP_WOS || type == GUILD_AREA_WOS) )
						continue;

					if( type != GUILD && type != GUILD_NOBG && type != GUILD_WOS && sd->bl.m != bl->m )
						continue;

					if( (type == GUILD_AREA || type == GUILD_AREA_WOS) && (sd->bl.x < x0 || sd->bl.y < y0 || sd->bl.x > x1 || sd->bl.y > y1) )
						continue;

					if( packet_db[sd->packet_ver][RBUFW(buf,0)].len )
					{ // packet must exist for the client version
						WFIFOHEAD(fd,len);
						memcpy(WFIFOP(fd,0), buf, len);
						WFIFOSET(fd,len);
					}
				}
			}
			if (!enable_spy) //Skip unnecessary parsing. [Skotlex]
				break;

			iter = mapit_getallusers();
			while( (tsd = (TBL_PC*)mapit_next(iter)) != NULL )
			{
				if( tsd->guildspy == g->guild_id && packet_db[tsd->packet_ver][RBUFW(buf,0)].len )
				{ // packet must exist for the client version
					WFIFOHEAD(tsd->fd, len); //This is line 818
					memcpy(WFIFOP(tsd->fd,0), buf, len);
					WFIFOSET(tsd->fd,len);
				}
			}
			mapit_free(iter);
		}
		break;

	case BG_AREA:
	case BG_AREA_WOS:
		x0 = bl->x - AREA_SIZE;
		y0 = bl->y - AREA_SIZE;
		x1 = bl->x + AREA_SIZE;
		y1 = bl->y + AREA_SIZE;
	case BG_SAMEMAP:
	case BG_SAMEMAP_WOS:
	case BG:
	case BG_WOS:
		if( sd && sd->bg_id && (bg = bg_team_search(sd->bg_id)) != NULL )
		{
			for( i = 0; i < MAX_BG_MEMBERS; i++ )
			{
				if( (sd = bg->members[i].sd) == NULL || !(fd = sd->fd) )
					continue;
				if( sd->bl.id == bl->id && (type == BG_WOS || type == BG_SAMEMAP_WOS || type == BG_AREA_WOS) )
					continue;
				if( type != BG && type != BG_WOS && sd->bl.m != bl->m )
					continue;
				if( (type == BG_AREA || type == BG_AREA_WOS) && (sd->bl.x < x0 || sd->bl.y < y0 || sd->bl.x > x1 || sd->bl.y > y1) )
					continue;
				if( packet_db[sd->packet_ver][RBUFW(buf,0)].len )
				{ // packet must exist for the client version
					WFIFOHEAD(fd,len);
					memcpy(WFIFOP(fd,0), buf, len);
					WFIFOSET(fd,len);
				}
			}
		}
		break;

	default:
		ShowError("clif_send: Unrecognized type %d\n",type);
		return -1;
	}

	return 0;
}