WebSVN – Kolibri OS – Blame – /kernel/trunk/network/socket.inc

Rev	Author	Line No.	Line
3545	hidnplayr	1	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
		2	;; ;;
		3	;; Copyright (C) KolibriOS team 2004-2013. All rights reserved. ;;
		4	;; Distributed under terms of the GNU General Public License ;;
		5	;; ;;
		6	;; Part of the TCP/IP network stack for KolibriOS ;;
		7	;; ;;
		8	;; Written by hidnplayr@kolibrios.org, ;;
		9	;; and Clevermouse. ;;
		10	;; ;;
		11	;; Based on code by mike.dld ;;
		12	;; ;;
		13	;; GNU GENERAL PUBLIC LICENSE ;;
		14	;; Version 2, June 1991 ;;
		15	;; ;;
		16	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
		17
		18	$Revision: 3514 $
		19
		20
		21	struct SOCKET
		22
		23	NextPtr dd ? ; pointer to next socket in list
		24	PrevPtr dd ? ; pointer to previous socket in list
		25	Number dd ? ; socket number
		26
		27	mutex MUTEX
		28
		29	PID dd ? ; process ID
		30	TID dd ? ; thread ID
		31	Domain dd ? ; INET/LOCAL/..
		32	Type dd ? ; RAW/STREAM/DGRAP
		33	Protocol dd ? ; ICMP/IPv4/ARP/TCP/UDP
		34	errorcode dd ?
		35	device dd ? ; driver pointer, socket pointer if it's an LOCAL socket
		36
		37	options dd ?
		38	state dd ?
		39	backlog dw ? ; how many incoming connections that can be queued
		40
		41	snd_proc dd ?
		42	rcv_proc dd ?
		43
		44	ends
		45
		46	struct IP_SOCKET SOCKET
		47
		48	LocalIP rd 4 ; network byte order
		49	RemoteIP rd 4 ; network byte order
		50
		51	ends
		52
		53	struct TCP_SOCKET IP_SOCKET
		54
		55	LocalPort dw ? ; network byte order
		56	RemotePort dw ? ; network byte order
		57
		58	t_state dd ? ; TCB state
		59	t_rxtshift db ?
		60	rb 3 ; align
		61	t_rxtcur dd ?
		62	t_dupacks dd ?
		63	t_maxseg dd ?
		64	t_force dd ?
		65	t_flags dd ?
		66
		67	;---------------
		68	; RFC783 page 21
		69
		70	; send sequence
		71	SND_UNA dd ? ; sequence number of unack'ed sent Packets
		72	SND_NXT dd ? ; next send sequence number to use
		73	SND_UP dd ? ; urgent pointer
		74	SND_WL1 dd ? ; window minus one
		75	SND_WL2 dd ? ;
		76	ISS dd ? ; initial send sequence number
		77	SND_WND dd ? ; send window
		78
		79	; receive sequence
		80	RCV_WND dd ? ; receive window
		81	RCV_NXT dd ? ; next receive sequence number to use
		82	RCV_UP dd ? ; urgent pointer
		83	IRS dd ? ; initial receive sequence number
		84
		85	;---------------------
		86	; Additional variables
		87
		88	; receive variables
		89	RCV_ADV dd ?
		90
		91	; retransmit variables
		92	SND_MAX dd ?
		93
		94	; congestion control
		95	SND_CWND dd ?
		96	SND_SSTHRESH dd ?
		97
		98	;----------------------
		99	; Transmit timing stuff
		100	t_idle dd ?
		101	t_rtt dd ?
		102	t_rtseq dd ?
		103	t_srtt dd ?
		104	t_rttvar dd ?
		105	t_rttmin dd ?
		106	max_sndwnd dd ?
		107
		108	;-----------------
		109	; Out-of-band data
		110	t_oobflags dd ?
		111	t_iobc dd ?
		112	t_softerror dd ?
		113
		114
		115	;---------
		116	; RFC 1323 ; the order of next 4 elements may not change
		117
		118	SND_SCALE db ?
		119	RCV_SCALE db ?
		120	requested_s_scale db ?
		121	request_r_scale db ?
		122
		123	ts_recent dd ? ; a copy of the most-recent valid timestamp from the other end
		124	ts_recent_age dd ?
		125	last_ack_sent dd ?
		126
		127
		128	;-------
		129	; Timers
3600	hidnplayr	130	timer_flags dd ?
3545	hidnplayr	131	timer_retransmission dd ? ; rexmt
		132	timer_persist dd ?
		133	timer_keepalive dd ? ; keepalive/syn timeout
		134	timer_timed_wait dd ? ; also used as 2msl timer
		135
		136	; extra
		137
		138	ts_ecr dd ? ; timestamp echo reply
		139	ts_val dd ?
		140
		141	seg_next dd ? ; re-assembly queue
		142
		143	temp_bits db ?
		144	rb 3 ; align
		145
		146	ends
		147
		148	struct UDP_SOCKET IP_SOCKET
		149
		150	LocalPort dw ? ; network byte order
		151	RemotePort dw ? ; network byte order
		152	firstpacket db ?
		153
		154	ends
		155
		156
		157	struct ICMP_SOCKET IP_SOCKET
		158
		159	Identifier dw ?
		160
		161	ends
		162
		163
		164	struct RING_BUFFER
		165
		166	mutex MUTEX
		167	start_ptr dd ? ; Pointer to start of buffer
		168	end_ptr dd ? ; pointer to end of buffer
		169	read_ptr dd ? ; Read pointer
		170	write_ptr dd ? ; Write pointer
		171	size dd ? ; Number of bytes buffered
		172
		173	ends
		174
		175	struct STREAM_SOCKET TCP_SOCKET
		176
		177	rcv RING_BUFFER
		178	snd RING_BUFFER
		179
		180	ends
		181
		182	struct socket_queue_entry
		183
		184	data_ptr dd ?
		185	buf_ptr dd ?
		186	data_size dd ?
		187
		188	ends
		189
		190
		191	SOCKETBUFFSIZE = 4096 ; in bytes
		192
		193	SOCKET_QUEUE_SIZE = 10 ; maximum number of incoming packets queued for 1 socket
		194	; the incoming packet queue for sockets is placed in the socket struct itself, at this location from start
		195	SOCKET_QUEUE_LOCATION = (SOCKETBUFFSIZE - SOCKET_QUEUE_SIZE*sizeof.socket_queue_entry - sizeof.queue)
		196
		197	uglobal
		198	net_sockets rd 4
		199	last_socket_num dd ?
		200	last_UDP_port dw ? ; These values give the number of the last used ephemeral port
		201	last_TCP_port dw ? ;
3647	hidnplayr	202	socket_mutex MUTEX
3545	hidnplayr	203	endg
		204
		205
		206	;-----------------------------------------------------------------
		207	;
		208	; SOCKET_init
		209	;
		210	;-----------------------------------------------------------------
		211	macro SOCKET_init {
		212
		213	xor eax, eax
		214	mov edi, net_sockets
		215	mov ecx, 5
		216	rep stosd
		217
		218	@@:
		219	pseudo_random eax
3600	hidnplayr	220	cmp ax, EPHEMERAL_PORT_MIN
3545	hidnplayr	221	jb @r
3600	hidnplayr	222	cmp ax, EPHEMERAL_PORT_MAX
3545	hidnplayr	223	ja @r
		224	xchg al, ah
		225	mov [last_UDP_port], ax
		226
		227	@@:
		228	pseudo_random eax
3600	hidnplayr	229	cmp ax, EPHEMERAL_PORT_MIN
3545	hidnplayr	230	jb @r
3600	hidnplayr	231	cmp ax, EPHEMERAL_PORT_MAX
3545	hidnplayr	232	ja @r
		233	xchg al, ah
		234	mov [last_TCP_port], ax
		235
3647	hidnplayr	236	mov ecx, socket_mutex
		237	call mutex_init
		238
3545	hidnplayr	239	}
		240
		241	;-----------------------------------------------------------------
		242	;
		243	; Socket API (function 74)
		244	;
		245	;-----------------------------------------------------------------
		246	align 4
		247	sys_socket:
		248
		249	cmp ebx, 255
		250	jz SOCKET_debug
		251
		252	cmp ebx, .number
		253	ja s_error
		254	jmp dword [.table + 4*ebx]
		255
		256	.table:
		257	dd SOCKET_open ; 0
		258	dd SOCKET_close ; 1
		259	dd SOCKET_bind ; 2
		260	dd SOCKET_listen ; 3
		261	dd SOCKET_connect ; 4
		262	dd SOCKET_accept ; 5
		263	dd SOCKET_send ; 6
		264	dd SOCKET_receive ; 7
		265	dd SOCKET_set_opt ; 8
		266	dd SOCKET_get_opt ; 9
		267	dd SOCKET_pair ; 10
		268	.number = ($ - .table) / 4 - 1
		269
		270	s_error:
3556	hidnplayr	271	DEBUGF DEBUG_NETWORK_ERROR, "SOCKET: error\n"
3545	hidnplayr	272	mov dword [esp+32], -1
		273
		274	ret
		275
		276	;-----------------------------------------------------------------
		277	;
		278	; SOCKET_open
		279	;
		280	; IN: domain in ecx
		281	; type in edx
		282	; protocol in esi
		283	; OUT: eax is socket num, -1 on error
		284	;
		285	;-----------------------------------------------------------------
		286	align 4
		287	SOCKET_open:
		288
3556	hidnplayr	289	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_open: domain=%u type=%u protocol=%x ", ecx, edx, esi
3545	hidnplayr	290
		291	push ecx edx esi
		292	call SOCKET_alloc
		293	pop esi edx ecx
		294	jz s_error
		295
		296	mov [esp+32], edi ; return socketnumber
3556	hidnplayr	297	DEBUGF DEBUG_NETWORK_VERBOSE, "socknum=%u\n", edi
3545	hidnplayr	298
		299	; push edx
		300	; and edx, SO_NONBLOCK
		301	or [eax + SOCKET.options], SO_NONBLOCK ;edx
		302	; pop edx
		303	; and edx, not SO_NONBLOCK
		304
		305	mov [eax + SOCKET.Domain], ecx
		306	mov [eax + SOCKET.Type], edx
		307	mov [eax + SOCKET.Protocol], esi
		308
		309	cmp ecx, AF_INET4
		310	jne .no_inet4
		311
		312	cmp edx, SOCK_DGRAM
		313	je .udp
		314
		315	cmp edx, SOCK_STREAM
		316	je .tcp
		317
		318	cmp edx, SOCK_RAW
		319	je .raw
		320
		321	.no_inet4:
		322	cmp ecx, AF_PPP
		323	jne .no_ppp
		324
		325	cmp esi, PPP_PROTO_ETHERNET
		326	je .pppoe
		327
		328	.no_ppp:
3556	hidnplayr	329	DEBUGF DEBUG_NETWORK_ERROR, "SOCKET_open: Unknown socket family/protocol\n"
3545	hidnplayr	330	ret
		331
		332	align 4
		333	.raw:
		334	test esi, esi ; IP_PROTO_IP
		335	jz .ip
		336
		337	cmp esi, IP_PROTO_ICMP
		338	je .icmp
		339
		340	cmp esi, IP_PROTO_UDP
		341	je .udp
		342
		343	cmp esi, IP_PROTO_TCP
		344	je .tcp
		345
		346	ret
		347
		348	align 4
		349	.udp:
		350	mov [eax + SOCKET.Protocol], IP_PROTO_UDP
		351	mov [eax + SOCKET.snd_proc], SOCKET_send_udp
		352	mov [eax + SOCKET.rcv_proc], SOCKET_receive_dgram
		353	ret
		354
		355	align 4
		356	.tcp:
		357	mov [eax + SOCKET.Protocol], IP_PROTO_TCP
		358	mov [eax + SOCKET.snd_proc], SOCKET_send_tcp
		359	mov [eax + SOCKET.rcv_proc], SOCKET_receive_stream
		360
		361	TCP_init_socket eax
		362	ret
		363
		364
		365	align 4
		366	.ip:
		367	mov [eax + SOCKET.snd_proc], SOCKET_send_ip
		368	mov [eax + SOCKET.rcv_proc], SOCKET_receive_dgram
		369	ret
		370
		371
		372	align 4
		373	.icmp:
		374	mov [eax + SOCKET.snd_proc], SOCKET_send_icmp
		375	mov [eax + SOCKET.rcv_proc], SOCKET_receive_dgram
		376	ret
		377
		378	align 4
		379	.pppoe:
		380	push eax
		381	init_queue (eax + SOCKET_QUEUE_LOCATION) ; Set up data receiving queue
		382	pop eax
		383
		384	mov [eax + SOCKET.snd_proc], SOCKET_send_pppoe
		385	mov [eax + SOCKET.rcv_proc], SOCKET_receive_dgram
		386	ret
		387
		388
		389	;-----------------------------------------------------------------
		390	;
		391	; SOCKET_bind
		392	;
		393	; IN: socket number in ecx
		394	; pointer to sockaddr struct in edx
		395	; length of that struct in esi
		396	; OUT: 0 on success
		397	;
		398	;-----------------------------------------------------------------
		399	align 4
		400	SOCKET_bind:
		401
3556	hidnplayr	402	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_bind: socknum=%u sockaddr=%x length=%u\n", ecx, edx, esi
3545	hidnplayr	403
		404	call SOCKET_num_to_ptr
		405	jz s_error
		406
		407	cmp esi, 2
		408	jb s_error
		409
		410	cmp word [edx], AF_INET4
		411	je .af_inet4
		412
		413	cmp word [edx], AF_LOCAL
		414	je .af_local
		415
		416	jmp s_error
		417
		418	.af_local:
		419	; TODO: write code here
		420
		421	mov dword [esp+32], 0
		422	ret
		423
		424	.af_inet4:
		425
		426	cmp esi, 6
		427	jb s_error
		428
		429	cmp [eax + SOCKET.Protocol], IP_PROTO_UDP
		430	je .udp
		431
		432	cmp [eax + SOCKET.Protocol], IP_PROTO_TCP
		433	je .tcp
		434
		435	jmp s_error
		436
		437	.tcp:
		438	.udp:
		439
3637	hidnplayr	440	mov ebx, [edx + 4] ; First, fill in the IP
3545	hidnplayr	441	test ebx, ebx ; If IP is 0, use default
		442	jnz @f
3601	hidnplayr	443	mov ebx, [IP_LIST + 4] ;;;;; FIXME !i!i!i
3545	hidnplayr	444	@@:
		445	mov [eax + IP_SOCKET.LocalIP], ebx
		446
		447	mov bx, [edx + 2] ; Now fill in the local port if it's still available
		448	call SOCKET_check_port
		449	jz s_error ; ZF is set by socket_check_port, on error
		450
3556	hidnplayr	451	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_bind: local ip=%u.%u.%u.%u\n",\
3545	hidnplayr	452	[eax + IP_SOCKET.LocalIP + 0]:1,[eax + IP_SOCKET.LocalIP + 1]:1,\
		453	[eax + IP_SOCKET.LocalIP + 2]:1,[eax + IP_SOCKET.LocalIP + 3]:1
		454
		455	mov dword [esp+32], 0
		456	ret
		457
		458
		459
		460
		461	;-----------------------------------------------------------------
		462	;
		463	; SOCKET_connect
		464	;
		465	; IN: socket number in ecx
		466	; pointer to sockaddr struct in edx
		467	; length of that struct in esi
		468	; OUT: 0 on success
		469	;
		470	;-----------------------------------------------------------------
		471	align 4
		472	SOCKET_connect:
		473
3556	hidnplayr	474	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_connect: socknum=%u sockaddr=%x length=%u\n", ecx, edx, esi
3545	hidnplayr	475
		476	call SOCKET_num_to_ptr
		477	jz s_error
		478
		479	cmp esi, 8
		480	jb s_error
		481
		482	cmp word [edx], AF_INET4
		483	je .af_inet4
		484
		485	jmp s_error
		486
		487	.af_inet4:
		488	cmp [eax + IP_SOCKET.LocalIP], 0
		489	jne @f
3601	hidnplayr	490	push [IP_LIST + 4] ; FIXME !i!i!i!
3545	hidnplayr	491	pop [eax + IP_SOCKET.LocalIP]
		492	@@:
		493
		494	cmp [eax + SOCKET.Protocol], IP_PROTO_UDP
		495	je .udp
		496
		497	cmp [eax + SOCKET.Protocol], IP_PROTO_TCP
		498	je .tcp
		499
		500	cmp [eax + SOCKET.Protocol], IP_PROTO_IP
		501	je .ip
		502
		503	cmp [eax + SOCKET.Protocol], IP_PROTO_ICMP
		504	je .ip
		505
		506	jmp s_error
		507
		508	align 4
		509	.udp:
		510	pusha
		511	lea ecx, [eax + SOCKET.mutex]
		512	call mutex_lock
		513	popa
		514
		515	pushw [edx + 2]
		516	pop [eax + UDP_SOCKET.RemotePort]
		517
		518	pushd [edx + 4]
		519	pop [eax + IP_SOCKET.RemoteIP]
		520
		521	cmp [eax + UDP_SOCKET.LocalPort], 0
		522	jne @f
		523	call SOCKET_find_port
		524	@@:
		525
		526	mov [eax + UDP_SOCKET.firstpacket], 0
		527
		528	push eax
		529	init_queue (eax + SOCKET_QUEUE_LOCATION) ; Set up data receiving queue
		530	pop eax
		531
		532	lea ecx, [eax + SOCKET.mutex]
		533	call mutex_unlock
		534
		535	mov dword [esp+32], 0
		536	ret
		537
		538	align 4
		539	.tcp:
		540	pusha
		541	lea ecx, [eax + SOCKET.mutex]
		542	call mutex_lock
		543	popa
		544
		545	pushw [edx + 2]
		546	pop [eax + TCP_SOCKET.RemotePort]
		547
		548	pushd [edx + 4]
		549	pop [eax + IP_SOCKET.RemoteIP]
		550
		551	cmp [eax + TCP_SOCKET.LocalPort], 0
		552	jne @f
		553	call SOCKET_find_port
		554	@@:
		555
		556	mov [eax + TCP_SOCKET.timer_persist], 0
		557	mov [eax + TCP_SOCKET.t_state], TCPS_SYN_SENT
		558
		559	push [TCP_sequence_num]
		560	add [TCP_sequence_num], 6400
		561	pop [eax + TCP_SOCKET.ISS]
		562	mov [eax + TCP_SOCKET.timer_keepalive], TCP_time_keep_init
		563
		564
		565	TCP_sendseqinit eax
		566
		567	; mov [ebx + TCP_SOCKET.timer_retransmission], ;; todo: create macro to set retransmission timer
		568
		569	mov ebx, eax
		570
		571	lea eax, [ebx + STREAM_SOCKET.snd]
		572	call SOCKET_ring_create
		573
		574	lea eax, [ebx + STREAM_SOCKET.rcv]
		575	call SOCKET_ring_create
		576
		577	pusha
		578	lea ecx, [ebx + SOCKET.mutex]
		579	call mutex_unlock
		580	popa
		581
		582	mov eax, ebx
		583	call TCP_output
		584
		585	;;; TODO: wait for successfull connection if blocking socket
		586
		587	mov dword [esp+32], 0
		588	ret
		589
		590	align 4
		591	.ip:
		592	pusha
		593	lea ecx, [eax + SOCKET.mutex]
		594	call mutex_lock
		595	popa
		596
		597	pushd [edx + 4]
		598	pop [eax + IP_SOCKET.RemoteIP]
		599
		600	push eax
		601	init_queue (eax + SOCKET_QUEUE_LOCATION) ; Set up data receiving queue
		602	pop eax
		603
		604	lea ecx, [eax + SOCKET.mutex]
		605	call mutex_unlock
		606
		607	mov dword [esp+32], 0
		608	ret
		609
		610
		611	;-----------------------------------------------------------------
		612	;
		613	; SOCKET_listen
		614	;
		615	; IN: socket number in ecx
		616	; backlog in edx
		617	; OUT: eax is socket num, -1 on error
		618	;
		619	;-----------------------------------------------------------------
		620	align 4
		621	SOCKET_listen:
		622
3556	hidnplayr	623	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_listen: socknum=%u backlog=%u\n", ecx, edx
3545	hidnplayr	624
		625	call SOCKET_num_to_ptr
		626	jz s_error
		627
		628	cmp [eax + SOCKET.Domain], AF_INET4
		629	jne s_error
		630
		631	cmp [eax + SOCKET.Protocol], IP_PROTO_TCP
		632	jne s_error
		633
		634	cmp [eax + TCP_SOCKET.LocalPort], 0
		635	je s_error
		636
		637	cmp [eax + IP_SOCKET.LocalIP], 0
		638	jne @f
3601	hidnplayr	639	push [IP_LIST + 4] ;;; fixme!!!!
3545	hidnplayr	640	pop [eax + IP_SOCKET.LocalIP]
		641	@@:
		642
		643	cmp edx, MAX_backlog
		644	jbe @f
		645	mov edx, MAX_backlog
		646	@@:
		647
		648	mov [eax + SOCKET.backlog], dx
		649	or [eax + SOCKET.options], SO_ACCEPTCON
		650	mov [eax + TCP_SOCKET.t_state], TCPS_LISTEN
		651	mov [eax + TCP_SOCKET.timer_keepalive], 0 ; disable keepalive timer
		652
		653	push eax
		654	init_queue (eax + SOCKET_QUEUE_LOCATION) ; Set up sockets queue
		655	pop eax
		656
		657	mov dword [esp+32], 0
		658
		659	ret
		660
		661
		662	;-----------------------------------------------------------------
		663	;
		664	; SOCKET_accept
		665	;
		666	; IN: socket number in ecx
		667	; addr in edx
		668	; addrlen in esi
		669	; OUT: eax is socket num, -1 on error
		670	;
		671	;-----------------------------------------------------------------
		672	align 4
		673	SOCKET_accept:
		674
3556	hidnplayr	675	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_accept: socknum=%u sockaddr=%x length=%u\n", ecx, edx, esi
3545	hidnplayr	676
		677	call SOCKET_num_to_ptr
		678	jz s_error
		679
		680	test [eax + SOCKET.options], SO_ACCEPTCON
		681	jz s_error
		682
		683	cmp [eax + SOCKET.Domain], AF_INET4
		684	jne s_error
		685
		686	cmp [eax + SOCKET.Protocol], IP_PROTO_TCP
		687	jne s_error
		688
		689	.loop:
		690	get_from_queue (eax + SOCKET_QUEUE_LOCATION), MAX_backlog, 4, .block
		691
		692	; Ok, we got a socket ptr
		693	mov eax, [esi]
		694
		695	; Change thread ID to that of the current thread
		696	mov ebx, [TASK_BASE]
		697	mov ebx, [ebx + TASKDATA.pid]
		698	mov [eax + SOCKET.TID], ebx
		699
		700	; Convert it to a socket number
		701	call SOCKET_ptr_to_num
		702	jz s_error
		703	; and return it to caller
		704	mov [esp+32], eax
		705	ret
		706
		707	.block:
		708	test [eax + SOCKET.options], SO_NONBLOCK
		709	jnz s_error
		710
		711	call SOCKET_block
		712	jmp .loop
		713
		714	;-----------------------------------------------------------------
		715	;
		716	; SOCKET_close
		717	;
		718	; IN: socket number in ecx
		719	; OUT: eax is socket num, -1 on error
		720	;
		721	;-----------------------------------------------------------------
		722	align 4
		723	SOCKET_close:
		724
3556	hidnplayr	725	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_close: socknum=%u\n", ecx
3545	hidnplayr	726
		727	call SOCKET_num_to_ptr
		728	jz s_error
		729
		730	mov dword [esp+32], 0 ; The socket exists, so we will succeed in closing it.
		731
		732	.socket:
		733	or [eax + SOCKET.options], SO_NONBLOCK ; Mark the socket as non blocking, we dont want it to block any longer!
		734
		735	test [eax + SOCKET.state], SS_BLOCKED ; Is the socket still in blocked state?
		736	jz @f
		737	call SOCKET_notify.unblock ; Unblock it.
		738	@@:
		739
		740	cmp [eax + SOCKET.Domain], AF_INET4
		741	jne .free
		742
		743	cmp [eax + SOCKET.Protocol], IP_PROTO_TCP
		744	je .tcp
		745
		746	.free:
		747	call SOCKET_free
		748	ret
		749
		750	.tcp:
		751	cmp [eax + TCP_SOCKET.t_state], TCPS_SYN_RECEIVED ; state must be LISTEN, SYN_SENT or CLOSED
		752	jb .free
		753
		754	call TCP_usrclosed
		755	call TCP_output ;;;; Fixme: is this nescessary??
3646	hidnplayr	756	call SOCKET_free
3545	hidnplayr	757
		758	ret
		759
		760
		761	;-----------------------------------------------------------------
		762	;
		763	; SOCKET_receive
		764	;
		765	; IN: socket number in ecx
		766	; addr to buffer in edx
		767	; length of buffer in esi
		768	; flags in edi
		769	; OUT: eax is number of bytes copied, -1 on error
		770	;
		771	;-----------------------------------------------------------------
		772	align 4
		773	SOCKET_receive:
		774
3556	hidnplayr	775	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_receive: socknum=%u bufaddr=%x buflength=%u flags=%x\n", ecx, edx, esi, edi
3545	hidnplayr	776
		777	call SOCKET_num_to_ptr
		778	jz s_error
		779
3565	hidnplayr	780	call [eax + SOCKET.rcv_proc]
3545	hidnplayr	781
3565	hidnplayr	782	mov [esp+32], eax
		783	ret
3545	hidnplayr	784
3565	hidnplayr	785
3545	hidnplayr	786	align 4
		787	SOCKET_receive_dgram:
		788
3556	hidnplayr	789	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_receive: DGRAM\n"
3545	hidnplayr	790
		791	mov ebx, esi
		792	mov edi, edx ; addr to buffer
		793
		794	.loop:
		795	get_from_queue (eax + SOCKET_QUEUE_LOCATION), SOCKET_QUEUE_SIZE, sizeof.socket_queue_entry, .block ; destroys esi and ecx
		796
		797	mov ecx, [esi + socket_queue_entry.data_size]
3556	hidnplayr	798	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_receive: %u bytes data\n", ecx
3545	hidnplayr	799
		800	cmp ecx, ebx
		801	ja .too_small
		802
3565	hidnplayr	803	push ecx
3545	hidnplayr	804	push [esi + socket_queue_entry.buf_ptr] ; save the buffer addr so we can clear it later
		805	mov esi, [esi + socket_queue_entry.data_ptr]
3556	hidnplayr	806	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_receive: Source buffer=%x real addr=%x\n", [esp], esi
3545	hidnplayr	807
		808	; copy the data
		809	shr ecx, 1
		810	jnc .nb
		811	movsb
		812	.nb:
		813	shr ecx, 1
		814	jnc .nw
		815	movsw
		816	.nw:
		817	test ecx, ecx
		818	jz .nd
		819	rep movsd
		820	.nd:
		821
		822	call kernel_free ; remove the packet
3565	hidnplayr	823	pop eax
		824
3545	hidnplayr	825	ret
		826
		827	.too_small:
		828
3556	hidnplayr	829	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_receive: Buffer too small\n"
3565	hidnplayr	830	.fail:
		831	mov eax, -1
		832	ret
3545	hidnplayr	833
		834	.block:
		835	test [eax + SOCKET.options], SO_NONBLOCK
3565	hidnplayr	836	jnz .fail
3545	hidnplayr	837
		838	call SOCKET_block
		839	jmp .loop
		840
		841
		842	align 4
		843	SOCKET_receive_local:
		844
		845	; does this socket have a PID yet?
		846	cmp [eax + SOCKET.PID], 0
		847	jne @f
		848
		849	; Change PID to that of current process
		850	mov ebx, [TASK_BASE]
		851	mov ebx, [ebx + TASKDATA.pid]
		852	mov [eax + SOCKET.PID], ebx
		853	mov [eax + SOCKET.TID], ebx ; currently TID = PID in kolibrios :(
		854	@@:
		855
		856	mov [eax + SOCKET.rcv_proc], SOCKET_receive_stream
		857
		858	align 4
		859	SOCKET_receive_stream:
		860
3556	hidnplayr	861	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_receive: STREAM\n"
3545	hidnplayr	862
		863	mov ebx, edi
		864	mov ecx, esi
		865	mov edi, edx
		866	xor edx, edx
		867
		868	test ebx, MSG_DONTWAIT
		869	jnz .dontwait
		870	.loop:
		871	cmp [eax + STREAM_SOCKET.rcv + RING_BUFFER.size], 0
		872	je .block
		873	.dontwait:
		874	test ebx, MSG_PEEK
		875	jnz .peek
		876
		877	add eax, STREAM_SOCKET.rcv
		878	call SOCKET_ring_read
		879	call SOCKET_ring_free
		880
3565	hidnplayr	881	mov eax, ecx ; return number of bytes copied
3545	hidnplayr	882	ret
		883
		884	.peek:
3565	hidnplayr	885	mov eax, [eax + STREAM_SOCKET.rcv + RING_BUFFER.size]
3545	hidnplayr	886	ret
		887
		888	.block:
		889	test [eax + SOCKET.options], SO_NONBLOCK
		890	jnz .return0
		891
		892	call SOCKET_block
		893	jmp .loop
		894
		895	.return0:
3565	hidnplayr	896	test [eax + SOCKET.options], SS_CANTRCVMORE
		897	jz .ok
		898
		899	xor eax, eax
		900	dec eax
3545	hidnplayr	901	ret
		902
3565	hidnplayr	903	.ok:
		904	xor eax, eax
		905	ret
3545	hidnplayr	906
3565	hidnplayr	907
3545	hidnplayr	908	;-----------------------------------------------------------------
		909	;
		910	; SOCKET_send
		911	;
		912	;
		913	; IN: socket number in ecx
		914	; pointer to data in edx
		915	; datalength in esi
		916	; flags in edi
		917	; OUT: -1 on error
		918	;
		919	;-----------------------------------------------------------------
		920	align 4
		921	SOCKET_send:
		922
3556	hidnplayr	923	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_send: socknum=%u data ptr=%x length=%u flags=%x\n", ecx, edx, esi, edi
3545	hidnplayr	924
		925	call SOCKET_num_to_ptr
		926	jz s_error
		927
		928	mov ecx, esi
		929	mov esi, edx
		930
		931	jmp [eax + SOCKET.snd_proc]
		932
		933
		934	align 4
		935	SOCKET_send_udp:
		936
3556	hidnplayr	937	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_send: UDP\n"
3545	hidnplayr	938
		939	mov [esp+32], ecx
		940	call UDP_output
		941	cmp eax, -1
		942	je s_error
		943	ret
		944
		945
		946	align 4
		947	SOCKET_send_tcp:
		948
3556	hidnplayr	949	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_send: TCP\n"
3545	hidnplayr	950
		951	push eax
		952	add eax, STREAM_SOCKET.snd
		953	call SOCKET_ring_write
		954	pop eax
		955
		956	mov [esp+32], ecx
		957
		958	call TCP_output
		959	ret
		960
		961
		962	align 4
		963	SOCKET_send_ip:
		964
3556	hidnplayr	965	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_send: IPv4\n"
3545	hidnplayr	966
		967	mov [esp+32], ecx
		968	call IPv4_output_raw
		969	cmp eax, -1
		970	je s_error
		971	ret
		972
		973
		974	align 4
		975	SOCKET_send_icmp:
		976
3556	hidnplayr	977	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_send: ICMP\n"
3545	hidnplayr	978
		979	mov [esp+32], ecx
		980	call ICMP_output_raw
		981	cmp eax, -1
		982	je s_error
		983	ret
		984
		985
		986	align 4
		987	SOCKET_send_pppoe:
		988
3556	hidnplayr	989	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_send: PPPoE\n"
3545	hidnplayr	990
		991	mov [esp+32], ecx
		992	mov ebx, [eax + SOCKET.device]
		993
		994	call PPPoE_discovery_output
		995	cmp eax, -1
		996	je s_error
		997	ret
		998
		999
		1000
		1001	align 4
		1002	SOCKET_send_local:
		1003
		1004	; does this socket have a PID yet?
		1005	cmp [eax + SOCKET.PID], 0
		1006	jne @f
		1007
		1008	; Change PID to that of current process
		1009	mov ebx, [TASK_BASE]
		1010	mov ebx, [ebx + TASKDATA.pid]
		1011	mov [eax + SOCKET.PID], ebx
		1012	mov [eax + SOCKET.TID], ebx ; currently TID = PID in kolibrios :(
		1013	@@:
		1014	mov [eax + SOCKET.snd_proc], SOCKET_send_local_
		1015
		1016	align 4
		1017	SOCKET_send_local_:
		1018
3556	hidnplayr	1019	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_send: LOCAL\n"
3545	hidnplayr	1020
		1021	; get the other side's socket and check if it still exists
		1022	mov eax, [eax + SOCKET.device]
		1023	call SOCKET_check
		1024	jz s_error
		1025
		1026	; allright, shove in the data!
		1027	push eax
		1028	add eax, STREAM_SOCKET.rcv
		1029	call SOCKET_ring_write
		1030	pop eax
		1031
		1032	; return the number of written bytes (or errorcode) to application
		1033	mov [esp+32], ecx
		1034
		1035	; and notify the other end
		1036	call SOCKET_notify
		1037
		1038	ret
		1039
		1040
		1041	;-----------------------------------------------------------------
		1042	;
		1043	; SOCKET_get_options
		1044	;
		1045	; IN: ecx = socket number
		1046	; edx = pointer to the options:
		1047	; dd level, optname, optval, optlen
		1048	; OUT: -1 on error
		1049	;
		1050	; At moment, uses only pseudo-optname -2 for get last_ack_number for TCP.
		1051	; TODO: find best way to notify that send()'ed data were acknowledged
		1052	; Also pseudo-optname -3 is valid and returns socket state, one of TCPS_*.
		1053	;
		1054	;-----------------------------------------------------------------
		1055	align 4
		1056	SOCKET_get_opt:
		1057
3556	hidnplayr	1058	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_get_opt\n"
3545	hidnplayr	1059
		1060	call SOCKET_num_to_ptr
		1061	jz s_error
		1062
		1063	cmp dword [edx], IP_PROTO_TCP
		1064	jne s_error
		1065	cmp dword [edx+4], -2
		1066	je @f
		1067	cmp dword [edx+4], -3
		1068	jne s_error
		1069	@@:
		1070	; mov eax, [edx+12]
		1071	; test eax, eax
		1072	; jz .fail
		1073	; cmp dword [eax], 4
		1074	; mov dword [eax], 4
		1075	; jb .fail
		1076	; stdcall net_socket_num_to_addr, ecx
		1077	; test eax, eax
		1078	; jz .fail
		1079	; ; todo: check that eax is really TCP socket
		1080	; mov ecx, [eax + TCP_SOCKET.last_ack_number]
		1081	; cmp dword [edx+4], -2
		1082	; jz @f
		1083	; mov ecx, [eax + TCP_SOCKET.state]
		1084	@@:
		1085	mov eax, [edx+8]
		1086	test eax, eax
		1087	jz @f
		1088	mov [eax], ecx
		1089	@@:
		1090	mov dword [esp+32], 0
		1091	ret
		1092
		1093
		1094
		1095	;-----------------------------------------------------------------
		1096	;
		1097	; SOCKET_set_options
		1098	;
		1099	; IN: ecx = socket number
		1100	; edx = pointer to the options:
		1101	; dd level, optname, optlen, optval
		1102	; OUT: -1 on error
		1103	;
		1104	;-----------------------------------------------------------------
		1105	align 4
		1106	SOCKET_set_opt:
		1107
3556	hidnplayr	1108	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_set_opt\n"
3545	hidnplayr	1109
		1110	call SOCKET_num_to_ptr
		1111	jz s_error
		1112
		1113	cmp dword [edx], SOL_SOCKET
		1114	jne s_error
		1115
		1116	cmp dword [edx+4], SO_BINDTODEVICE
		1117	je .bind
		1118
		1119	cmp dword [edx+4], SO_BLOCK
		1120	je .block
		1121
		1122	jmp s_error
		1123
		1124	.bind:
		1125	cmp dword [edx+8], 0
		1126	je .unbind
		1127
		1128	movzx edx, byte [edx + 9]
3600	hidnplayr	1129	cmp edx, NET_DEVICES_MAX
3545	hidnplayr	1130	ja s_error
		1131
		1132	mov edx, [NET_DRV_LIST + 4*edx]
		1133	test edx, edx
		1134	jz s_error
		1135	mov [eax + SOCKET.device], edx
		1136
3556	hidnplayr	1137	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_set_opt: Bound socket %x to device %x\n",eax, edx
3545	hidnplayr	1138
		1139	mov dword [esp+32], 0 ; success!
		1140	ret
		1141
		1142	.unbind:
		1143	mov [eax + SOCKET.device], 0
		1144
		1145	mov dword [esp+32], 0 ; success!
		1146	ret
		1147
		1148	.block:
		1149	cmp dword [edx+8], 0
		1150	je .unblock
		1151
		1152	and [eax + SOCKET.options], not SO_NONBLOCK
		1153
		1154	mov dword [esp+32], 0 ; success!
		1155	ret
		1156
		1157	.unblock:
		1158	or [eax + SOCKET.options], SO_NONBLOCK
		1159
		1160	mov dword [esp+32], 0 ; success!
		1161	ret
		1162
		1163
		1164
		1165	;-----------------------------------------------------------------
		1166	;
		1167	; SOCKET_pair
		1168	;
		1169	; Allocates a pair of linked LOCAL domain sockets
		1170	;
		1171	; IN: /
		1172	; OUT: eax is socket1 num, -1 on error
		1173	; ebx is socket2 num
		1174	;
		1175	;-----------------------------------------------------------------
		1176	align 4
		1177	SOCKET_pair:
		1178
3556	hidnplayr	1179	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_pair\n"
3545	hidnplayr	1180
		1181	call SOCKET_alloc
		1182	jz s_error
		1183	mov [esp+32], edi ; application's eax
		1184
		1185	mov [eax + SOCKET.Domain], AF_LOCAL
		1186	mov [eax + SOCKET.Type], SOCK_STREAM
		1187	mov [eax + SOCKET.Protocol], 0 ;;; CHECKME
		1188	mov [eax + SOCKET.snd_proc], SOCKET_send_local
		1189	mov [eax + SOCKET.rcv_proc], SOCKET_receive_local
		1190	mov [eax + SOCKET.PID], 0
		1191	mov ebx, eax
		1192
		1193	call SOCKET_alloc
		1194	jz .error
		1195	mov [esp+24], edi ; application's ebx
		1196
		1197	mov [eax + SOCKET.Domain], AF_LOCAL
		1198	mov [eax + SOCKET.Type], SOCK_STREAM
		1199	mov [eax + SOCKET.Protocol], 0 ;;; CHECKME
		1200	mov [eax + SOCKET.snd_proc], SOCKET_send_local
		1201	mov [eax + SOCKET.rcv_proc], SOCKET_receive_local
		1202	mov [eax + SOCKET.PID], 0
		1203
		1204	; Link the two sockets to eachother
		1205	mov [eax + SOCKET.device], ebx
		1206	mov [ebx + SOCKET.device], eax
		1207
		1208	lea eax, [eax + STREAM_SOCKET.rcv]
		1209	call SOCKET_ring_create
		1210
		1211	lea eax, [ebx + STREAM_SOCKET.rcv]
		1212	call SOCKET_ring_create
		1213	pop eax
		1214
		1215	ret
		1216
		1217	.error:
		1218	mov eax, ebx
		1219	call SOCKET_free
		1220	jmp s_error
		1221
		1222
		1223
		1224	;-----------------------------------------------------------------
		1225	;
		1226	; SOCKET_debug
		1227	;
		1228	; Copies socket variables to application buffer
		1229	;
		1230	; IN: ecx = socket number
		1231	; edx = pointer to buffer
		1232	;
		1233	; OUT: -1 on error
		1234	;-----------------------------------------------------------------
		1235	align 4
		1236	SOCKET_debug:
		1237
3556	hidnplayr	1238	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_debug\n"
3545	hidnplayr	1239
		1240	mov edi, edx
		1241
		1242	test ecx, ecx
		1243	jz .returnall
		1244
		1245	call SOCKET_num_to_ptr
		1246	jz s_error
		1247
		1248	mov esi, eax
		1249	mov ecx, SOCKETBUFFSIZE/4
		1250	rep movsd
		1251
		1252	mov dword [esp+32], 0
		1253	ret
		1254
		1255	.returnall:
		1256	mov ebx, net_sockets
		1257	.next_socket:
		1258	mov ebx, [ebx + SOCKET.NextPtr]
		1259	test ebx, ebx
		1260	jz .done
		1261	mov eax, [ebx + SOCKET.Number]
		1262	stosd
		1263	jmp .next_socket
		1264	.done:
		1265	xor eax, eax
		1266	stosd
		1267
		1268	mov dword [esp+32], 0
		1269	ret
		1270
		1271
		1272	;-----------------------------------------------------------------
		1273	;
		1274	; SOCKET_find_port
		1275	;
		1276	; Fills in the local port number for TCP and UDP sockets
		1277	; This procedure always works because the number of sockets is
		1278	; limited to a smaller number then the number of possible ports
		1279	;
		1280	; IN: eax = socket pointer
		1281	; OUT: /
		1282	;
		1283	;-----------------------------------------------------------------
		1284	align 4
		1285	SOCKET_find_port:
		1286
3556	hidnplayr	1287	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_find_port\n"
3545	hidnplayr	1288
		1289	push ebx esi ecx
		1290
		1291	cmp [eax + SOCKET.Protocol], IP_PROTO_UDP
		1292	je .udp
		1293
		1294	cmp [eax + SOCKET.Protocol], IP_PROTO_TCP
		1295	je .tcp
		1296
		1297	pop ecx esi ebx
		1298	ret
		1299
		1300	.udp:
		1301	mov bx, [last_UDP_port]
		1302	call .findit
		1303	mov [last_UDP_port], bx
		1304
		1305	pop ecx esi ebx
		1306	ret
		1307
		1308	.tcp:
		1309	mov bx, [last_TCP_port]
		1310	call .findit
		1311	mov [last_TCP_port], bx
		1312
		1313	pop ecx esi ebx
		1314	ret
		1315
		1316
		1317	.restart:
		1318	mov bx, MIN_EPHEMERAL_PORT_N
		1319	.findit:
		1320	cmp bx, MAX_EPHEMERAL_PORT_N
		1321	je .restart
		1322
		1323	add bh, 1
		1324	adc bl, 0
		1325
		1326	call SOCKET_check_port
		1327	jz .findit
		1328	ret
		1329
		1330
		1331
		1332	;-----------------------------------------------------------------
		1333	;
		1334	; SOCKET_check_port (to be used with AF_INET only!)
		1335	;
		1336	; Checks if a local port number is unused
		1337	; If the proposed port number is unused, it is filled in in the socket structure
		1338	;
		1339	; IN: eax = socket ptr (to find out if its a TCP/UDP socket)
		1340	; bx = proposed socket number (network byte order)
		1341	;
		1342	; OUT: ZF = set on error
		1343	;
		1344	;-----------------------------------------------------------------
		1345	align 4
		1346	SOCKET_check_port:
		1347
3556	hidnplayr	1348	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_check_port: "
3545	hidnplayr	1349
3647	hidnplayr	1350	pusha
		1351	mov ecx, socket_mutex
		1352	call mutex_lock
		1353	popa
		1354
3545	hidnplayr	1355	mov ecx, [eax + SOCKET.Protocol]
		1356	mov edx, [eax + IP_SOCKET.LocalIP]
		1357	mov esi, net_sockets
		1358
		1359	.next_socket:
		1360	mov esi, [esi + SOCKET.NextPtr]
		1361	or esi, esi
		1362	jz .port_ok
		1363
		1364	cmp [esi + SOCKET.Protocol], ecx
		1365	jne .next_socket
		1366
		1367	cmp [esi + IP_SOCKET.LocalIP], edx
		1368	jne .next_socket
		1369
		1370	cmp [esi + UDP_SOCKET.LocalPort], bx
		1371	jne .next_socket
		1372
3647	hidnplayr	1373	pusha
		1374	mov ecx, socket_mutex
		1375	call mutex_unlock
		1376	popa
		1377
3556	hidnplayr	1378	DEBUGF DEBUG_NETWORK_VERBOSE, "local port %x already in use\n", bx ; FIXME: find a way to print big endian values with debugf
3545	hidnplayr	1379	ret
		1380
		1381	.port_ok:
3647	hidnplayr	1382	pusha
		1383	mov ecx, socket_mutex
		1384	call mutex_unlock
		1385	popa
		1386
3556	hidnplayr	1387	DEBUGF DEBUG_NETWORK_VERBOSE, "local port %x is free\n", bx ; FIXME: find a way to print big endian values with debugf
3545	hidnplayr	1388	mov [eax + UDP_SOCKET.LocalPort], bx
		1389	or bx, bx ; clear the zero-flag
		1390	ret
		1391
		1392
		1393
		1394	;-----------------------------------------------------------------
		1395	;
		1396	; SOCKET_input
		1397	;
		1398	; Updates a (stateless) socket with received data
		1399	;
		1400	; Note: the mutex should already be set !
		1401	;
		1402	; IN: eax = socket ptr
		1403	; ecx = data size
		1404	; esi = ptr to data
		1405	; [esp] = ptr to buf
		1406	; [esp + 4] = buf size
		1407	;
		1408	; OUT: /
		1409	;
		1410	;-----------------------------------------------------------------
		1411	align 4
		1412	SOCKET_input:
		1413
3556	hidnplayr	1414	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_input: socket=%x, data=%x size=%u\n", eax, esi, ecx
3545	hidnplayr	1415
		1416	mov [esp+4], ecx
		1417	push esi
		1418	mov esi, esp
		1419
		1420	add_to_queue (eax + SOCKET_QUEUE_LOCATION), SOCKET_QUEUE_SIZE, sizeof.socket_queue_entry, SOCKET_input.full
		1421
3556	hidnplayr	1422	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_input: success\n"
3545	hidnplayr	1423	add esp, sizeof.socket_queue_entry
		1424
		1425	pusha
		1426	lea ecx, [eax + SOCKET.mutex]
		1427	call mutex_unlock
		1428	popa
		1429
		1430	jmp SOCKET_notify
		1431
		1432	.full:
3556	hidnplayr	1433	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_input: socket %x is full!\n", eax
3545	hidnplayr	1434
		1435	pusha
		1436	lea ecx, [eax + SOCKET.mutex]
		1437	call mutex_unlock
		1438	popa
		1439
		1440	call kernel_free
		1441	add esp, 8
		1442
		1443	ret
		1444
		1445
		1446	;--------------------------
		1447	;
		1448	; eax = ptr to ring struct (just a buffer of the right size)
		1449	;
		1450	align 4
		1451	SOCKET_ring_create:
		1452
		1453	push esi
		1454	mov esi, eax
		1455
		1456	push edx
		1457	stdcall create_ring_buffer, SOCKET_MAXDATA, PG_SW
		1458	pop edx
		1459
3556	hidnplayr	1460	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_ring_created: %x\n", eax
3545	hidnplayr	1461
		1462	pusha
		1463	lea ecx, [esi + RING_BUFFER.mutex]
		1464	call mutex_init
		1465	popa
		1466
		1467	mov [esi + RING_BUFFER.start_ptr], eax
		1468	mov [esi + RING_BUFFER.write_ptr], eax
		1469	mov [esi + RING_BUFFER.read_ptr], eax
		1470	mov [esi + RING_BUFFER.size], 0
		1471	add eax, SOCKET_MAXDATA
		1472	mov [esi + RING_BUFFER.end_ptr], eax
		1473	mov eax, esi
		1474	pop esi
		1475
		1476	ret
		1477
		1478	;-----------------------------------------------------------------
		1479	;
		1480	; SOCKET_ring_write
		1481	;
		1482	; Adds data to a stream socket, and updates write pointer and size
		1483	;
		1484	; IN: eax = ptr to ring struct
		1485	; ecx = data size
		1486	; esi = ptr to data
		1487	;
		1488	; OUT: ecx = number of bytes stored
		1489	;
		1490	;-----------------------------------------------------------------
		1491	align 4
		1492	SOCKET_ring_write:
		1493
3556	hidnplayr	1494	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_ring_write: ringbuff=%x ptr=%x size=%u\n", eax, esi, ecx
3545	hidnplayr	1495
		1496	; lock mutex
		1497	pusha
		1498	lea ecx, [eax + RING_BUFFER.mutex]
		1499	call mutex_lock ; TODO: check what registers this function actually destroys
		1500	popa
		1501
		1502	; calculate available size
		1503	mov edi, SOCKET_MAXDATA
		1504	sub edi, [eax + RING_BUFFER.size] ; available buffer size in edi
		1505	cmp ecx, edi
		1506	jbe .copy
		1507	mov ecx, edi
		1508	.copy:
		1509	mov edi, [eax + RING_BUFFER.write_ptr]
3556	hidnplayr	1510	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_ring_write: %u bytes from %x to %x\n", ecx, esi, edi
3545	hidnplayr	1511
		1512	; update write ptr
		1513	push edi
		1514	add edi, ecx
		1515	cmp edi, [eax + RING_BUFFER.end_ptr]
		1516	jb @f
		1517	sub edi, SOCKET_MAXDATA ; WRAP
		1518	@@:
		1519	mov [eax + RING_BUFFER.write_ptr], edi
		1520	pop edi
		1521
		1522	; update size
		1523	add [eax + RING_BUFFER.size], ecx
		1524
		1525	; copy the data
		1526	push ecx
		1527	shr ecx, 1
		1528	jnc .nb
		1529	movsb
		1530	.nb:
		1531	shr ecx, 1
		1532	jnc .nw
		1533	movsw
		1534	.nw:
		1535	test ecx, ecx
		1536	jz .nd
		1537	rep movsd
		1538	.nd:
		1539	pop ecx
		1540
		1541	; unlock mutex
		1542	push eax ecx
		1543	lea ecx, [eax + RING_BUFFER.mutex]
		1544	call mutex_unlock ; TODO: check what registers this function actually destroys
		1545	pop ecx eax
		1546
		1547	ret
		1548
		1549	;-----------------------------------------------------------------
		1550	;
		1551	; SOCKET_ring_read
		1552	;
		1553	; IN: eax = ring struct ptr
		1554	; ecx = bytes to read
		1555	; edx = offset
		1556	; edi = ptr to buffer start
		1557	;
		1558	; OUT: eax = unchanged
		1559	; ecx = number of bytes read (0 on error)
		1560	; edx = destroyed
		1561	; esi = destroyed
		1562	; edi = ptr to buffer end
		1563	;
		1564	;-----------------------------------------------------------------
		1565	align 4
		1566	SOCKET_ring_read:
		1567
3556	hidnplayr	1568	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_ring_read: ringbuff=%x ptr=%x size=%u offset=%x\n", eax, edi, ecx, edx
3545	hidnplayr	1569
		1570	pusha
		1571	lea ecx, [eax + RING_BUFFER.mutex]
		1572	call mutex_lock ; TODO: check what registers this function actually destroys
		1573	popa
		1574
		1575	mov esi, [eax + RING_BUFFER.read_ptr]
		1576	add esi, edx ; esi = start_ptr + offset
		1577
		1578	neg edx
		1579	add edx, [eax + RING_BUFFER.size] ; edx = snd.size - offset
		1580	jle .no_data_at_all
		1581
		1582	pusha
		1583	lea ecx, [eax + RING_BUFFER.mutex]
		1584	call mutex_unlock ; TODO: check what registers this function actually destroys
		1585	popa
		1586
		1587	cmp ecx, edx
		1588	ja .less_data
		1589
		1590	.copy:
3556	hidnplayr	1591	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_ring_read: %u bytes from %x to %x\n", ecx, esi, edi
3545	hidnplayr	1592	push ecx
		1593	shr ecx, 1
		1594	jnc .nb
		1595	movsb
		1596	.nb:
		1597	shr ecx, 1
		1598	jnc .nw
		1599	movsw
		1600	.nw:
		1601	test ecx, ecx
		1602	jz .nd
		1603	rep movsd
		1604	.nd:
		1605	pop ecx
		1606	ret
		1607
		1608	.no_data_at_all:
		1609	pusha
		1610	lea ecx, [eax + RING_BUFFER.mutex]
		1611	call mutex_unlock ; TODO: check what registers this function actually destroys
		1612	popa
		1613
3556	hidnplayr	1614	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_ring_read: no data at all!\n"
3545	hidnplayr	1615	xor ecx, ecx
		1616	ret
		1617
		1618	.less_data:
		1619	mov ecx, edx
		1620	jmp .copy
		1621
		1622
		1623	;-----------------------------------------------------------------
		1624	;
		1625	; SOCKET_ring_free
		1626	;
		1627	; Free's some bytes from the ringbuffer
		1628	;
		1629	; IN: eax = ptr to ring struct
		1630	; ecx = data size
		1631	;
		1632	; OUT: ecx = number of bytes free-ed
		1633	;
		1634	;-----------------------------------------------------------------
		1635	align 4
		1636	SOCKET_ring_free:
		1637
3556	hidnplayr	1638	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_ring_free: %u bytes from ring %x\n", ecx, eax
3545	hidnplayr	1639
		1640	push eax ecx
		1641	lea ecx, [eax + RING_BUFFER.mutex]
		1642	call mutex_lock ; TODO: check what registers this function actually destroys
		1643	pop ecx eax
		1644
		1645	sub [eax + RING_BUFFER.size], ecx
		1646	jb .error
		1647	add [eax + RING_BUFFER.read_ptr], ecx
		1648
		1649	mov edx, [eax + RING_BUFFER.end_ptr]
		1650	cmp [eax + RING_BUFFER.read_ptr], edx
		1651	jb @f
		1652	sub [eax + RING_BUFFER.read_ptr], SOCKET_MAXDATA
		1653	@@:
		1654
		1655	push eax ecx
		1656	lea ecx, [eax + RING_BUFFER.mutex] ; TODO: check what registers this function actually destroys
		1657	call mutex_unlock
		1658	pop ecx eax
		1659
		1660	ret
		1661
		1662	.error: ; we could free all available bytes, but that would be stupid, i guess..
3556	hidnplayr	1663	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_ring_free: buffer=%x error!\n", eax
3545	hidnplayr	1664	add [eax + RING_BUFFER.size], ecx
		1665
		1666	push eax
		1667	lea ecx, [eax + RING_BUFFER.mutex]
		1668	call mutex_unlock ; TODO: check what registers this function actually destroys
		1669	pop eax
		1670
		1671	xor ecx, ecx
		1672	ret
		1673
		1674
		1675	;-----------------------------------------------------------------
		1676	;
		1677	; SOCKET_block
		1678	;
		1679	; Suspends the thread attached to a socket
		1680	;
		1681	; IN: eax = socket ptr
		1682	; OUT: /
		1683	;
		1684	;-----------------------------------------------------------------
		1685	align 4
		1686	SOCKET_block:
		1687
3556	hidnplayr	1688	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_block: %x\n", eax
3545	hidnplayr	1689
		1690	pushf
		1691	cli
		1692
		1693	; Set the 'socket is blocked' flag
		1694	or [eax + SOCKET.state], SS_BLOCKED
		1695
		1696	; Suspend the thread
		1697	push edx
		1698	mov edx, [TASK_BASE]
		1699	mov [edx + TASKDATA.state], 1 ; Suspended
		1700
		1701	; Remember the thread ID so we can wake it up again
		1702	mov edx, [edx + TASKDATA.pid]
3556	hidnplayr	1703	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_block: suspending thread: %u\n", edx
3545	hidnplayr	1704	mov [eax + SOCKET.TID], edx
		1705	pop edx
		1706
		1707	call change_task
		1708	popf
		1709
3556	hidnplayr	1710	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_block: continueing\n"
3545	hidnplayr	1711
		1712	ret
		1713
		1714
		1715	;-----------------------------------------------------------------
		1716	;
		1717	; SOCKET_notify
		1718	;
		1719	; notify's the owner of a socket that something happened
		1720	;
		1721	; IN: eax = socket ptr
		1722	; OUT: /
		1723	;
		1724	;-----------------------------------------------------------------
		1725	align 4
		1726	SOCKET_notify:
		1727
3556	hidnplayr	1728	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_notify: %x\n", eax
3545	hidnplayr	1729
		1730	call SOCKET_check
		1731	jz .error
		1732
		1733	test [eax + SOCKET.state], SS_BLOCKED
		1734	jnz .unblock
		1735
		1736	test [eax + SOCKET.options], SO_NONBLOCK
		1737	jz .error
		1738
		1739	push eax ecx esi
		1740
		1741	; socket exists and is of non blocking type.
		1742	; We'll try to flag an event to the thread
		1743
		1744	mov eax, [eax + SOCKET.TID]
		1745	test eax, eax
		1746	jz .done
		1747	mov ecx, 1
		1748	mov esi, TASK_DATA + TASKDATA.pid
		1749
		1750	.next_pid:
		1751	cmp [esi], eax
		1752	je .found_pid
		1753	inc ecx
		1754	add esi, 0x20
		1755	cmp ecx, [TASK_COUNT]
		1756	jbe .next_pid
		1757	; PID not found, TODO: close socket!
		1758	jmp .done
		1759
		1760	.found_pid:
		1761	shl ecx, 8
		1762	or [ecx + SLOT_BASE + APPDATA.event_mask], EVENT_NETWORK
		1763
3556	hidnplayr	1764	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_notify: Raised a network event!\n"
3545	hidnplayr	1765
		1766	jmp .done
		1767
		1768	.unblock:
		1769	push eax ecx esi
		1770	; Clear the 'socket is blocked' flag
		1771	and [eax + SOCKET.state], not SS_BLOCKED
		1772
		1773	; Find the thread's TASK_DATA
		1774	mov eax, [eax + SOCKET.TID]
		1775	test eax, eax
		1776	jz .error
		1777	xor ecx, ecx
		1778	inc ecx
		1779	mov esi, TASK_DATA
		1780	.next:
		1781	cmp [esi + TASKDATA.pid], eax
		1782	je .found
		1783	inc ecx
		1784	add esi, 0x20
		1785	cmp ecx, [TASK_COUNT]
		1786	jbe .next
		1787	jmp .error
		1788	.found:
		1789
		1790	; Run the thread
		1791	mov [esi + TASKDATA.state], 0 ; Running
3556	hidnplayr	1792	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_notify: Unblocked socket!\n"
3545	hidnplayr	1793
		1794	.done:
		1795	pop esi ecx eax
		1796
		1797	.error:
		1798	ret
		1799
		1800
		1801	;--------------------------------------------------------------------
		1802	;
		1803	; SOCKET_alloc
		1804	;
		1805	; Allocate memory for socket data and put new socket into the list
		1806	; Newly created socket is initialized with calling PID and number and
		1807	; put into beginning of list (which is a fastest way).
		1808	;
		1809	; IN: /
		1810	; OUT: eax = 0 on error, socket ptr otherwise
		1811	; edi = socket number
		1812	; ZF = cleared on error
		1813	;
		1814	;--------------------------------------------------------------------
		1815	align 4
		1816	SOCKET_alloc:
		1817
		1818	push ebx
		1819
		1820	stdcall kernel_alloc, SOCKETBUFFSIZE
3556	hidnplayr	1821	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_alloc: ptr=%x\n", eax
3545	hidnplayr	1822	or eax, eax
		1823	jz .exit
		1824
		1825	; zero-initialize allocated memory
		1826	push eax
		1827	mov edi, eax
		1828	mov ecx, SOCKETBUFFSIZE / 4
		1829	xor eax, eax
		1830	rep stosd
		1831	pop eax
		1832
		1833	; set send-and receive procedures to return -1
		1834	mov [eax + SOCKET.snd_proc], s_error
		1835	mov [eax + SOCKET.rcv_proc], s_error
		1836
3647	hidnplayr	1837	pusha
		1838	mov ecx, socket_mutex
		1839	call mutex_lock
		1840	popa
		1841
3545	hidnplayr	1842	; find first free socket number and use it
		1843	mov edi, [last_socket_num]
		1844	.next_socket_number:
		1845	inc edi
		1846	jz .next_socket_number ; avoid socket nr 0
		1847	cmp edi, -1
		1848	je .next_socket_number ; avoid socket nr -1
		1849	mov ebx, net_sockets
		1850	.next_socket:
		1851	mov ebx, [ebx + SOCKET.NextPtr]
		1852	test ebx, ebx
		1853	jz .last_socket
		1854
		1855	cmp [ebx + SOCKET.Number], edi
		1856	jne .next_socket
		1857	jmp .next_socket_number
		1858
		1859	.last_socket:
		1860	mov [last_socket_num], edi
		1861	mov [eax + SOCKET.Number], edi
3556	hidnplayr	1862	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_alloc: number=%u\n", edi
3545	hidnplayr	1863
		1864	; Fill in PID
		1865	mov ebx, [TASK_BASE]
		1866	mov ebx, [ebx + TASKDATA.pid]
		1867	mov [eax + SOCKET.PID], ebx
		1868	mov [eax + SOCKET.TID], ebx ; currently TID = PID in kolibrios :(
		1869
		1870	; init mutex
		1871	pusha
		1872	lea ecx, [eax + SOCKET.mutex]
		1873	call mutex_init
		1874	popa
		1875
		1876	; add socket to the list by re-arranging some pointers
		1877	mov ebx, [net_sockets + SOCKET.NextPtr]
		1878
		1879	mov [eax + SOCKET.PrevPtr], net_sockets
		1880	mov [eax + SOCKET.NextPtr], ebx
		1881
		1882	test ebx, ebx
		1883	jz @f
		1884
		1885	pusha
		1886	lea ecx, [ebx + SOCKET.mutex]
		1887	call mutex_lock
		1888	popa
		1889
		1890	mov [ebx + SOCKET.PrevPtr], eax
		1891
		1892	pusha
		1893	lea ecx, [ebx + SOCKET.mutex]
		1894	call mutex_unlock
		1895	popa
		1896	@@:
		1897
		1898	mov [net_sockets + SOCKET.NextPtr], eax
		1899	or eax, eax ; used to clear zero flag
3647	hidnplayr	1900
		1901	pusha
		1902	mov ecx, socket_mutex
		1903	call mutex_unlock
		1904	popa
		1905
3545	hidnplayr	1906	.exit:
		1907	pop ebx
		1908
		1909	ret
		1910
		1911
		1912	;----------------------------------------------------
		1913	;
		1914	; SOCKET_free
		1915	;
		1916	; Free socket data memory and remove socket from the list
		1917	;
		1918	; IN: eax = socket ptr
		1919	; OUT: /
		1920	;
		1921	;----------------------------------------------------
		1922	align 4
		1923	SOCKET_free:
		1924
3556	hidnplayr	1925	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_free: %x\n", eax
3545	hidnplayr	1926
		1927	call SOCKET_check
		1928	jz .error
		1929
		1930	push ebx
		1931
		1932	pusha
3647	hidnplayr	1933	mov ecx, socket_mutex
		1934	call mutex_lock
		1935	popa
		1936
		1937	pusha
3545	hidnplayr	1938	lea ecx, [eax + SOCKET.mutex]
		1939	call mutex_lock
		1940	popa
		1941
		1942	cmp [eax + SOCKET.Domain], AF_INET4
		1943	jnz .no_tcp
		1944
		1945	cmp [eax + SOCKET.Protocol], IP_PROTO_TCP
		1946	jnz .no_tcp
		1947
		1948	mov ebx, eax
		1949	stdcall kernel_free, [ebx + STREAM_SOCKET.rcv.start_ptr]
		1950	stdcall kernel_free, [ebx + STREAM_SOCKET.snd.start_ptr]
		1951	mov eax, ebx
		1952	.no_tcp:
		1953
		1954	push eax ; this will be passed to kernel_free
		1955	mov ebx, [eax + SOCKET.NextPtr]
		1956	mov eax, [eax + SOCKET.PrevPtr]
		1957
3556	hidnplayr	1958	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_free: linking socket %x to socket %x\n", eax, ebx
3545	hidnplayr	1959
		1960	test eax, eax
		1961	jz @f
		1962	mov [eax + SOCKET.NextPtr], ebx
		1963	@@:
		1964
		1965	test ebx, ebx
		1966	jz @f
		1967	mov [ebx + SOCKET.PrevPtr], eax
		1968	@@:
		1969
		1970	call kernel_free
		1971	pop ebx
		1972
3647	hidnplayr	1973	pusha
		1974	mov ecx, socket_mutex
		1975	call mutex_unlock
		1976	popa
		1977
3556	hidnplayr	1978	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_free: success!\n"
3545	hidnplayr	1979
		1980	.error:
		1981	ret
		1982
		1983	;------------------------------------
		1984	;
		1985	; SOCKET_fork
		1986	;
		1987	; Create a child socket
		1988	;
		1989	; IN: socket nr in ebx
		1990	; OUT: child socket nr in eax
		1991	;
		1992	;-----------------------------------
		1993	align 4
		1994	SOCKET_fork:
		1995
3556	hidnplayr	1996	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_fork: %x\n", ebx
3545	hidnplayr	1997
		1998	; Exit if backlog queue is full
		1999	mov eax, [ebx + SOCKET_QUEUE_LOCATION + queue.size]
		2000	cmp ax, [ebx + SOCKET.backlog]
		2001	jae .fail
		2002
		2003	; Allocate new socket
		2004	push ebx
		2005	call SOCKET_alloc
		2006	pop ebx
		2007	jz .fail
		2008
		2009	push eax
		2010	mov esi, esp
		2011	add_to_queue (ebx + SOCKET_QUEUE_LOCATION), MAX_backlog, 4, .fail2
		2012	pop eax
		2013
		2014	; Copy structure from current socket to new
		2015	; We start at PID to preserve the socket num, and the 2 pointers at beginning of socket
		2016	lea esi, [ebx + SOCKET.PID]
		2017	lea edi, [eax + SOCKET.PID]
		2018	mov ecx, (SOCKET_QUEUE_LOCATION - SOCKET.PID + 3)/4
		2019	rep movsd
		2020
		2021	and [eax + SOCKET.options], not SO_ACCEPTCON
		2022
		2023	ret
		2024
		2025	.fail2:
		2026	add esp, 4+4+4
		2027	.fail:
3556	hidnplayr	2028	DEBUGF DEBUG_NETWORK_ERROR, "SOCKET_fork: failed\n"
3545	hidnplayr	2029	xor eax, eax
		2030	ret
		2031
		2032
		2033	;---------------------------------------------------
		2034	;
		2035	; SOCKET_num_to_ptr
		2036	;
		2037	; Get socket structure address by its number
		2038	;
		2039	; IN: ecx = socket number
		2040	; OUT: eax = 0 on error, socket ptr otherwise
		2041	; ZF = set on error
		2042	;
		2043	;---------------------------------------------------
		2044	align 4
		2045	SOCKET_num_to_ptr:
		2046
3556	hidnplayr	2047	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_num_to_ptr: num=%u ", ecx
3545	hidnplayr	2048
3647	hidnplayr	2049	pusha
		2050	mov ecx, socket_mutex
		2051	call mutex_lock
		2052	popa
		2053
3545	hidnplayr	2054	mov eax, net_sockets
		2055
		2056	.next_socket:
		2057	mov eax, [eax + SOCKET.NextPtr]
		2058	or eax, eax
		2059	jz .error
		2060	cmp [eax + SOCKET.Number], ecx
		2061	jne .next_socket
		2062
		2063	test eax, eax
		2064
3647	hidnplayr	2065	pusha
		2066	mov ecx, socket_mutex
		2067	call mutex_unlock
		2068	popa
		2069
3556	hidnplayr	2070	DEBUGF DEBUG_NETWORK_VERBOSE, "ptr=%x\n", eax
3545	hidnplayr	2071	ret
		2072
		2073	.error:
3647	hidnplayr	2074	pusha
		2075	mov ecx, socket_mutex
		2076	call mutex_unlock
		2077	popa
		2078
3637	hidnplayr	2079	DEBUGF DEBUG_NETWORK_ERROR, "SOCKET_num_to_ptr: not found\n", eax
3545	hidnplayr	2080	ret
		2081
		2082
		2083	;---------------------------------------------------
		2084	;
		2085	; SOCKET_ptr_to_num
		2086	;
		2087	; Get socket number by its address
		2088	;
		2089	; IN: eax = socket ptr
		2090	; OUT: eax = 0 on error, socket num otherwise
		2091	; ZF = set on error
		2092	;
		2093	;---------------------------------------------------
		2094	align 4
		2095	SOCKET_ptr_to_num:
		2096
3556	hidnplayr	2097	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_ptr_to_num: ptr=%x ", eax
3545	hidnplayr	2098
		2099	call SOCKET_check
		2100	jz .error
		2101
		2102	mov eax, [eax + SOCKET.Number]
		2103
3556	hidnplayr	2104	DEBUGF DEBUG_NETWORK_VERBOSE, "num=%u\n", eax
3545	hidnplayr	2105	ret
		2106
		2107	.error:
3556	hidnplayr	2108	DEBUGF DEBUG_NETWORK_ERROR, "SOCKET_ptr_to_num: not found\n", eax
3545	hidnplayr	2109	ret
		2110
		2111
		2112	;---------------------------------------------------
		2113	;
		2114	; SOCKET_check
		2115	;
		2116	; checks if the given value is really a socket ptr
		2117	;
		2118	; IN: eax = socket ptr
		2119	; OUT: eax = 0 on error, unchanged otherwise
		2120	; ZF = set on error
		2121	;
		2122	;---------------------------------------------------
		2123	align 4
		2124	SOCKET_check:
		2125
3556	hidnplayr	2126	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_check: %x\n", eax
3545	hidnplayr	2127
3647	hidnplayr	2128	pusha
		2129	mov ecx, socket_mutex
		2130	call mutex_lock
		2131	popa
		2132
3545	hidnplayr	2133	push ebx
		2134	mov ebx, net_sockets
		2135
		2136	.next_socket:
		2137	mov ebx, [ebx + SOCKET.NextPtr]
		2138	or ebx, ebx
		2139	jz .done
		2140	cmp ebx, eax
		2141	jnz .next_socket
		2142
		2143	.done:
		2144	mov eax, ebx
		2145	test eax, eax
		2146	pop ebx
		2147
3647	hidnplayr	2148	pusha
		2149	mov ecx, socket_mutex
		2150	call mutex_unlock
		2151	popa
		2152
3545	hidnplayr	2153	ret
		2154
		2155
		2156
		2157	;---------------------------------------------------
		2158	;
		2159	; SOCKET_check_owner
		2160	;
		2161	; checks if the caller application owns the socket
		2162	;
		2163	; IN: eax = socket ptr
		2164	; OUT: ZF = true/false
		2165	;
		2166	;---------------------------------------------------
		2167	align 4
		2168	SOCKET_check_owner:
		2169
3556	hidnplayr	2170	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_check_owner: %x\n", eax
3545	hidnplayr	2171
		2172	push ebx
		2173	mov ebx, [TASK_BASE]
		2174	mov ebx, [ebx + TASKDATA.pid]
		2175	cmp [eax + SOCKET.PID], ebx
		2176	pop ebx
		2177
		2178	ret
		2179
		2180
		2181
		2182
		2183	;------------------------------------------------------
		2184	;
		2185	; SOCKET_process_end
		2186	;
		2187	; Kernel calls this function when a certain process ends
		2188	; This function will check if the process had any open sockets
		2189	; And update them accordingly
		2190	;
		2191	; IN: edx = pid
		2192	; OUT: /
		2193	;
		2194	;------------------------------------------------------
		2195	align 4
		2196	SOCKET_process_end:
		2197
3556	hidnplayr	2198	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_process_end: %x\n", edx
3545	hidnplayr	2199
3647	hidnplayr	2200	pusha
		2201	mov ecx, socket_mutex
		2202	call mutex_lock
		2203	popa
		2204
3545	hidnplayr	2205	push ebx
		2206	mov ebx, net_sockets
		2207
		2208	.next_socket:
		2209	mov ebx, [ebx + SOCKET.NextPtr]
		2210	.next_socket_test:
		2211	test ebx, ebx
		2212	jz .done
		2213
		2214	cmp [ebx + SOCKET.PID], edx
		2215	jne .next_socket
		2216
3556	hidnplayr	2217	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_process_end: killing socket %x\n", ebx
3545	hidnplayr	2218
		2219	mov [ebx + SOCKET.PID], 0
		2220	mov eax, ebx
		2221	mov ebx, [ebx + SOCKET.NextPtr]
		2222	pusha
		2223	call SOCKET_close.socket
		2224	popa
		2225	jmp .next_socket_test
		2226
		2227	.done:
		2228	pop ebx
		2229
3647	hidnplayr	2230	pusha
		2231	mov ecx, socket_mutex
		2232	call mutex_unlock
		2233	popa
		2234
3545	hidnplayr	2235	ret
		2236
		2237
		2238
		2239
		2240	;-----------------------------------------------------------------
		2241	;
		2242	; SOCKET_is_connecting
		2243	;
		2244	; IN: eax = socket ptr
		2245	; OUT: /
		2246	;
		2247	;-----------------------------------------------------------------
		2248
		2249	align 4
		2250	SOCKET_is_connecting:
		2251
3556	hidnplayr	2252	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_is_connecting: %x\n", eax
3545	hidnplayr	2253
		2254	and [eax + SOCKET.options], not (SS_ISCONNECTED + SS_ISDISCONNECTING + SS_ISCONFIRMING)
		2255	or [eax + SOCKET.options], SS_ISCONNECTING
		2256
		2257	jmp SOCKET_notify
		2258
		2259
		2260
		2261	;-----------------------------------------------------------------
		2262	;
		2263	; SOCKET_is_connected
		2264	;
		2265	; IN: eax = socket ptr
		2266	; OUT: /
		2267	;
		2268	;-----------------------------------------------------------------
		2269
		2270	align 4
		2271	SOCKET_is_connected:
		2272
3556	hidnplayr	2273	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_is_connected: %x\n", eax
3545	hidnplayr	2274
		2275	and [eax + SOCKET.options], not (SS_ISCONNECTING + SS_ISDISCONNECTING + SS_ISCONFIRMING)
		2276	or [eax + SOCKET.options], SS_ISCONNECTED
		2277
		2278	jmp SOCKET_notify
		2279
		2280
		2281
		2282
		2283	;-----------------------------------------------------------------
		2284	;
		2285	; SOCKET_is_disconnecting
		2286	;
		2287	; IN: eax = socket ptr
		2288	; OUT: /
		2289	;
		2290	;-----------------------------------------------------------------
		2291
		2292	align 4
		2293	SOCKET_is_disconnecting:
		2294
3556	hidnplayr	2295	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_is_disconnecting: %x\n", eax
3545	hidnplayr	2296
		2297	and [eax + SOCKET.options], not (SS_ISCONNECTING)
		2298	or [eax + SOCKET.options], SS_ISDISCONNECTING + SS_CANTRCVMORE + SS_CANTSENDMORE
		2299
		2300	jmp SOCKET_notify
		2301
		2302
		2303
		2304	;-----------------------------------------------------------------
		2305	;
		2306	; SOCKET_is_disconnected
		2307	;
		2308	; IN: eax = socket ptr
		2309	; OUT: /
		2310	;
		2311	;-----------------------------------------------------------------
		2312
		2313	align 4
		2314	SOCKET_is_disconnected:
		2315
3556	hidnplayr	2316	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_is_disconnected: %x\n", eax
3545	hidnplayr	2317
		2318	and [eax + SOCKET.options], not (SS_ISCONNECTING + SS_ISCONNECTED + SS_ISDISCONNECTING)
		2319	or [eax + SOCKET.options], SS_CANTRCVMORE + SS_CANTSENDMORE
		2320
		2321	cmp [eax + SOCKET.Protocol], IP_PROTO_TCP
		2322	je .tcp
		2323
		2324	cmp [eax + SOCKET.Protocol], IP_PROTO_UDP
		2325	je .udp
		2326
		2327	jmp SOCKET_notify
		2328
		2329	.tcp:
		2330	.udp:
		2331	mov [eax + UDP_SOCKET.LocalPort], 0 ; UDP and TCP structs store localport at the same offset
		2332	mov [eax + UDP_SOCKET.RemotePort], 0
		2333
		2334	jmp SOCKET_notify
		2335
		2336
		2337	;-----------------------------------------------------------------
		2338	;
		2339	; SOCKET_cant_recv_more
		2340	;
		2341	; IN: eax = socket ptr
		2342	; OUT: /
		2343	;
		2344	;-----------------------------------------------------------------
		2345
		2346	align 4
		2347	SOCKET_cant_recv_more:
		2348
3556	hidnplayr	2349	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_cant_recv_more: %x\n", eax
3545	hidnplayr	2350
		2351	or [eax + SOCKET.options], SS_CANTRCVMORE
		2352
3565	hidnplayr	2353	call SOCKET_notify
		2354
3545	hidnplayr	2355	ret
		2356
		2357
		2358
		2359	;-----------------------------------------------------------------
		2360	;
		2361	; SOCKET_cant_send_more
		2362	;
		2363	; IN: eax = socket ptr
		2364	; OUT: /
		2365	;
		2366	;-----------------------------------------------------------------
		2367
		2368	align 4
		2369	SOCKET_cant_send_more:
		2370
3556	hidnplayr	2371	DEBUGF DEBUG_NETWORK_VERBOSE, "SOCKET_cant_send_more: %x\n", eax
3545	hidnplayr	2372
		2373	or [eax + SOCKET.options], SS_CANTSENDMORE
3565	hidnplayr	2374	mov [eax + SOCKET.snd_proc], s_error
3545	hidnplayr	2375
3565	hidnplayr	2376	call SOCKET_notify
		2377
3545	hidnplayr	2378	ret

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(root)/kernel/trunk/network/socket.inc @ 6476 – Rev 3647