forked from KolibriOS/kolibrios
2156 lines
53 KiB
PHP
2156 lines
53 KiB
PHP
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;
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;; Copyright (C) KolibriOS team 2004-2013. All rights reserved. ;;
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;; Distributed under terms of the GNU General Public License ;;
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;; ;;
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;; Part of the TCP/IP network stack for KolibriOS ;;
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;; ;;
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;; Written by hidnplayr@kolibrios.org, ;;
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;; and Clevermouse. ;;
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;; ;;
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;; Based on code by mike.dld ;;
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;; ;;
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;; GNU GENERAL PUBLIC LICENSE ;;
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;; Version 2, June 1991 ;;
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;; ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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$Revision$
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struct SOCKET
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NextPtr dd ? ; pointer to next socket in list
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PrevPtr dd ? ; pointer to previous socket in list
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Number dd ? ; socket number
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mutex MUTEX
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PID dd ? ; application process id
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Domain dd ? ; INET/LOCAL/..
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Type dd ? ; RAW/STREAM/DGRAP
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Protocol dd ? ; ICMP/IPv4/ARP/TCP/UDP
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errorcode dd ?
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device dd ? ; driver pointer, socket pointer if it's an LOCAL socket
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options dd ?
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state dd ?
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backlog dw ? ; how many incoming connections that can be queued
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snd_proc dd ?
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rcv_proc dd ?
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ends
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struct IP_SOCKET SOCKET
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LocalIP rd 4 ; network byte order
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RemoteIP rd 4 ; network byte order
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ends
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struct TCP_SOCKET IP_SOCKET
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LocalPort dw ? ; network byte order
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RemotePort dw ? ; network byte order
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t_state dd ? ; TCB state
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t_rxtshift db ?
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rb 3 ; align
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t_rxtcur dd ?
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t_dupacks dd ?
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t_maxseg dd ?
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t_force dd ?
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t_flags dd ?
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;---------------
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; RFC783 page 21
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; send sequence
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SND_UNA dd ? ; sequence number of unack'ed sent Packets
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SND_NXT dd ? ; next send sequence number to use
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SND_UP dd ? ; urgent pointer
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SND_WL1 dd ? ; window minus one
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SND_WL2 dd ? ;
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ISS dd ? ; initial send sequence number
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SND_WND dd ? ; send window
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; receive sequence
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RCV_WND dd ? ; receive window
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RCV_NXT dd ? ; next receive sequence number to use
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RCV_UP dd ? ; urgent pointer
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IRS dd ? ; initial receive sequence number
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;---------------------
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; Additional variables
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; receive variables
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RCV_ADV dd ?
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; retransmit variables
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SND_MAX dd ?
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; congestion control
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SND_CWND dd ?
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SND_SSTHRESH dd ?
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;----------------------
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; Transmit timing stuff
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t_idle dd ?
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t_rtt dd ?
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t_rtseq dd ?
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t_srtt dd ?
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t_rttvar dd ?
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t_rttmin dd ?
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max_sndwnd dd ?
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;-----------------
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; Out-of-band data
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t_oobflags dd ?
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t_iobc dd ?
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t_softerror dd ?
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;---------
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; RFC 1323 ; the order of next 4 elements may not change
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SND_SCALE db ?
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RCV_SCALE db ?
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requested_s_scale db ?
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request_r_scale db ?
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ts_recent dd ? ; a copy of the most-recent valid timestamp from the other end
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ts_recent_age dd ?
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last_ack_sent dd ?
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;-------
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; Timers
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timer_retransmission dd ? ; rexmt
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timer_persist dd ?
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timer_keepalive dd ? ; keepalive/syn timeout
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timer_timed_wait dd ? ; also used as 2msl timer
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; extra
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ts_ecr dd ? ; timestamp echo reply
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ts_val dd ?
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temp_bits db ?
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ends
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struct UDP_SOCKET IP_SOCKET
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LocalPort dw ? ; network byte order
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RemotePort dw ? ; network byte order
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firstpacket db ?
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ends
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struct ICMP_SOCKET IP_SOCKET
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Identifier dw ?
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ends
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struct RING_BUFFER
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start_ptr dd ? ; Pointer to start of buffer
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end_ptr dd ? ; pointer to end of buffer
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read_ptr dd ? ; Read pointer
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write_ptr dd ? ; Write pointer
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size dd ? ; Number of bytes buffered
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ends
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struct STREAM_SOCKET TCP_SOCKET
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rcv RING_BUFFER
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snd RING_BUFFER
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ends
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struct socket_queue_entry
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data_ptr dd ?
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buf_ptr dd ?
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data_size dd ?
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ends
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SOCKETBUFFSIZE = 4096 ; in bytes
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SOCKET_QUEUE_SIZE = 10 ; maximum number of incoming packets queued for 1 socket
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; the incoming packet queue for sockets is placed in the socket struct itself, at this location from start
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SOCKET_QUEUE_LOCATION = (SOCKETBUFFSIZE - SOCKET_QUEUE_SIZE*sizeof.socket_queue_entry - sizeof.queue)
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uglobal
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net_sockets rd 4
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last_socket_num dd ?
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last_UDP_port dw ? ; These values give the number of the last used ephemeral port
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last_TCP_port dw ? ;
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endg
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;-----------------------------------------------------------------
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;
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; SOCKET_init
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;
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;-----------------------------------------------------------------
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macro SOCKET_init {
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xor eax, eax
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mov edi, net_sockets
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mov ecx, 5
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rep stosd
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@@:
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pseudo_random eax
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cmp ax, MIN_EPHEMERAL_PORT
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jb @r
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cmp ax, MAX_EPHEMERAL_PORT
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ja @r
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xchg al, ah
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mov [last_UDP_port], ax
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@@:
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pseudo_random eax
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cmp ax, MIN_EPHEMERAL_PORT
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jb @r
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cmp ax, MAX_EPHEMERAL_PORT
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ja @r
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xchg al, ah
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mov [last_TCP_port], ax
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}
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;-----------------------------------------------------------------
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;
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; SOCKET_block
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;
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;-----------------------------------------------------------------
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macro SOCKET_block socket, loop, done {
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test [socket + SOCKET.options], SO_BLOCK ; Is this a blocking socket?
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jz done ; No, return immediately
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pusha
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mov eax, EVENT_NETWORK
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mov ebx, 1337 ; UID: ????
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call wait_event
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popa
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jmp loop
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}
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;-----------------------------------------------------------------
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;
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; Socket API (function 74)
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;
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;-----------------------------------------------------------------
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align 4
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sys_socket:
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cmp ebx, 255
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jz SOCKET_debug
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cmp ebx, .number
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ja s_error
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jmp dword [.table + 4*ebx]
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.table:
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dd SOCKET_open ; 0
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dd SOCKET_close ; 1
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dd SOCKET_bind ; 2
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dd SOCKET_listen ; 3
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dd SOCKET_connect ; 4
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dd SOCKET_accept ; 5
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dd SOCKET_send ; 6
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dd SOCKET_receive ; 7
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dd SOCKET_set_opt ; 8
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dd SOCKET_get_opt ; 9
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dd SOCKET_pair ; 10
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.number = ($ - .table) / 4 - 1
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s_error:
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DEBUGF 2,"SOCKET: error\n"
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mov dword [esp+32], -1
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ret
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;-----------------------------------------------------------------
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;
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; SOCKET_open
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;
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; IN: domain in ecx
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; type in edx
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; protocol in esi
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; OUT: eax is socket num, -1 on error
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;
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;-----------------------------------------------------------------
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align 4
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SOCKET_open:
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DEBUGF 2,"SOCKET_open: domain=%u type=%u protocol=%x ", ecx, edx, esi
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push ecx edx esi
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call SOCKET_alloc
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pop esi edx ecx
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jz s_error
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mov [esp+32], edi ; return socketnumber
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DEBUGF 2,"socknum=%u\n", edi
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mov [eax + SOCKET.Domain], ecx
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mov [eax + SOCKET.Type], edx
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mov [eax + SOCKET.Protocol], esi
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cmp ecx, AF_INET4
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jne .no_inet4
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cmp edx, SOCK_DGRAM
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je .udp
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cmp edx, SOCK_STREAM
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je .tcp
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cmp edx, SOCK_RAW
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je .raw
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.no_inet4:
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cmp ecx, AF_PPP
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jne .no_ppp
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cmp esi, PPP_PROTO_ETHERNET
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je .pppoe
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.no_ppp:
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DEBUGF 2,"Unknown socket family/protocol\n"
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ret
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align 4
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.raw:
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test esi, esi ; IP_PROTO_IP
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jz .ip
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cmp esi, IP_PROTO_ICMP
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je .icmp
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cmp esi, IP_PROTO_UDP
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je .udp
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cmp esi, IP_PROTO_TCP
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je .tcp
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ret
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align 4
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.udp:
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mov [eax + SOCKET.Protocol], IP_PROTO_UDP
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mov [eax + SOCKET.snd_proc], SOCKET_send_udp
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mov [eax + SOCKET.rcv_proc], SOCKET_receive_dgram
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ret
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align 4
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.tcp:
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mov [eax + SOCKET.Protocol], IP_PROTO_TCP
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mov [eax + SOCKET.snd_proc], SOCKET_send_tcp
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mov [eax + SOCKET.rcv_proc], SOCKET_receive_stream
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TCP_init_socket eax
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ret
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align 4
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.ip:
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mov [eax + SOCKET.snd_proc], SOCKET_send_ip
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mov [eax + SOCKET.rcv_proc], SOCKET_receive_dgram
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ret
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align 4
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.icmp:
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mov [eax + SOCKET.snd_proc], SOCKET_send_icmp
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mov [eax + SOCKET.rcv_proc], SOCKET_receive_dgram
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ret
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align 4
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.pppoe:
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push eax
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init_queue (eax + SOCKET_QUEUE_LOCATION) ; Set up data receiving queue
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pop eax
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mov [eax + SOCKET.snd_proc], SOCKET_send_pppoe
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mov [eax + SOCKET.rcv_proc], SOCKET_receive_dgram
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ret
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;-----------------------------------------------------------------
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;
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; SOCKET_bind
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;
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; IN: socket number in ecx
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; pointer to sockaddr struct in edx
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; length of that struct in esi
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; OUT: 0 on success
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;
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;-----------------------------------------------------------------
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align 4
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SOCKET_bind:
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DEBUGF 2,"SOCKET_bind: socknum=%u sockaddr=%x length=%u\n", ecx, edx, esi
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call SOCKET_num_to_ptr
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jz s_error
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cmp esi, 2
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jb s_error
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cmp word [edx], AF_INET4
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je .af_inet4
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cmp word [edx], AF_LOCAL
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je .af_local
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jmp s_error
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.af_local:
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; TODO: write code here
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mov dword [esp+32], 0
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ret
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.af_inet4:
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cmp esi, 6
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jb s_error
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cmp [eax + SOCKET.Protocol], IP_PROTO_UDP
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je .udp
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cmp [eax + SOCKET.Protocol], IP_PROTO_TCP
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je .tcp
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jmp s_error
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.tcp:
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.udp:
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mov ebx, [edx + 4] ; First, fill in the IP
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test ebx, ebx ; If IP is 0, use default
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jnz @f
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mov ebx, [NET_DEFAULT]
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mov ebx, [IP_LIST + 4*ebx]
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@@:
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mov [eax + IP_SOCKET.LocalIP], ebx
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mov bx, [edx + 2] ; Now fill in the local port if it's still available
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call SOCKET_check_port
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jz s_error ; ZF is set by socket_check_port, on error
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DEBUGF 1,"SOCKET_bind: local ip=%u.%u.%u.%u\n",\
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[eax + IP_SOCKET.LocalIP + 0]:1,[eax + IP_SOCKET.LocalIP + 1]:1,\
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[eax + IP_SOCKET.LocalIP + 2]:1,[eax + IP_SOCKET.LocalIP + 3]:1
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mov dword [esp+32], 0
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ret
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;-----------------------------------------------------------------
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;
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; SOCKET_connect
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;
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; IN: socket number in ecx
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; pointer to sockaddr struct in edx
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; length of that struct in esi
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; OUT: 0 on success
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;
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;-----------------------------------------------------------------
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align 4
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SOCKET_connect:
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DEBUGF 2,"SOCKET_connect: socknum=%u sockaddr=%x length=%u\n", ecx, edx, esi
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call SOCKET_num_to_ptr
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jz s_error
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cmp esi, 8
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jb s_error
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cmp word [edx], AF_INET4
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je .af_inet4
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jmp s_error
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.af_inet4:
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cmp [eax + IP_SOCKET.LocalIP], 0
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jne @f
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push [IP_LIST]
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pop [eax + IP_SOCKET.LocalIP]
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@@:
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cmp [eax + SOCKET.Protocol], IP_PROTO_UDP
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je .udp
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cmp [eax + SOCKET.Protocol], IP_PROTO_TCP
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je .tcp
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cmp [eax + SOCKET.Protocol], IP_PROTO_IP
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je .ip
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cmp [eax + SOCKET.Protocol], IP_PROTO_ICMP
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je .ip
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jmp s_error
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align 4
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.udp:
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pusha
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lea ecx, [eax + SOCKET.mutex]
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call mutex_lock
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popa
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pushw [edx + 2]
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pop [eax + UDP_SOCKET.RemotePort]
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pushd [edx + 4]
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pop [eax + IP_SOCKET.RemoteIP]
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cmp [eax + UDP_SOCKET.LocalPort], 0
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jne @f
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call SOCKET_find_port
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@@:
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mov [eax + UDP_SOCKET.firstpacket], 0
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push eax
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init_queue (eax + SOCKET_QUEUE_LOCATION) ; Set up data receiving queue
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pop eax
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lea ecx, [eax + SOCKET.mutex]
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call mutex_unlock
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mov dword [esp+32], 0
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ret
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align 4
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.tcp:
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pusha
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lea ecx, [eax + SOCKET.mutex]
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call mutex_lock
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popa
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pushw [edx + 2]
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pop [eax + TCP_SOCKET.RemotePort]
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pushd [edx + 4]
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pop [eax + IP_SOCKET.RemoteIP]
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cmp [eax + TCP_SOCKET.LocalPort], 0
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jne @f
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call SOCKET_find_port
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@@:
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mov [eax + TCP_SOCKET.timer_persist], 0
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mov [eax + TCP_SOCKET.t_state], TCPS_SYN_SENT
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push [TCP_sequence_num]
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add [TCP_sequence_num], 6400
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pop [eax + TCP_SOCKET.ISS]
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mov [eax + TCP_SOCKET.timer_keepalive], TCP_time_keep_init
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TCP_sendseqinit eax
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; mov [ebx + TCP_SOCKET.timer_retransmission], ;; todo: create macro to set retransmission timer
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mov ebx, eax
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lea eax, [ebx + STREAM_SOCKET.snd]
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call SOCKET_ring_create
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lea eax, [ebx + STREAM_SOCKET.rcv]
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call SOCKET_ring_create
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pusha
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lea ecx, [ebx + SOCKET.mutex]
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call mutex_unlock
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popa
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mov eax, ebx
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call TCP_output
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;;; TODO: wait for successfull connection if blocking socket
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mov dword [esp+32], 0
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ret
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align 4
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.ip:
|
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pusha
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lea ecx, [eax + SOCKET.mutex]
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call mutex_lock
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popa
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pushd [edx + 4]
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pop [eax + IP_SOCKET.RemoteIP]
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|
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push eax
|
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init_queue (eax + SOCKET_QUEUE_LOCATION) ; Set up data receiving queue
|
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pop eax
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|
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lea ecx, [eax + SOCKET.mutex]
|
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call mutex_unlock
|
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|
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mov dword [esp+32], 0
|
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ret
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|
|
;-----------------------------------------------------------------
|
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;
|
|
; SOCKET_listen
|
|
;
|
|
; IN: socket number in ecx
|
|
; backlog in edx
|
|
; OUT: eax is socket num, -1 on error
|
|
;
|
|
;-----------------------------------------------------------------
|
|
align 4
|
|
SOCKET_listen:
|
|
|
|
DEBUGF 2,"SOCKET_listen: socknum=%u backlog=%u\n", ecx, edx
|
|
|
|
call SOCKET_num_to_ptr
|
|
jz s_error
|
|
|
|
cmp [eax + SOCKET.Domain], AF_INET4
|
|
jne s_error
|
|
|
|
cmp [eax + SOCKET.Protocol], IP_PROTO_TCP
|
|
jne s_error
|
|
|
|
cmp [eax + TCP_SOCKET.LocalPort], 0
|
|
je s_error
|
|
|
|
cmp [eax + IP_SOCKET.LocalIP], 0
|
|
jne @f
|
|
push [IP_LIST]
|
|
pop [eax + IP_SOCKET.LocalIP]
|
|
@@:
|
|
|
|
cmp edx, MAX_backlog
|
|
jbe @f
|
|
mov edx, MAX_backlog
|
|
@@:
|
|
|
|
mov [eax + SOCKET.backlog], dx
|
|
or [eax + SOCKET.options], SO_ACCEPTCON
|
|
mov [eax + TCP_SOCKET.t_state], TCPS_LISTEN
|
|
mov [eax + TCP_SOCKET.timer_keepalive], 0 ; disable keepalive timer
|
|
|
|
push eax
|
|
init_queue (eax + SOCKET_QUEUE_LOCATION) ; Set up sockets queue
|
|
pop eax
|
|
|
|
mov dword [esp+32], 0
|
|
|
|
ret
|
|
|
|
|
|
;-----------------------------------------------------------------
|
|
;
|
|
; SOCKET_accept
|
|
;
|
|
; IN: socket number in ecx
|
|
; addr in edx
|
|
; addrlen in esi
|
|
; OUT: eax is socket num, -1 on error
|
|
;
|
|
;-----------------------------------------------------------------
|
|
align 4
|
|
SOCKET_accept:
|
|
|
|
DEBUGF 2,"SOCKET_accept: socknum=%u sockaddr=%x length=%u\n", ecx, edx, esi
|
|
|
|
call SOCKET_num_to_ptr
|
|
jz s_error
|
|
|
|
test [eax + SOCKET.options], SO_ACCEPTCON
|
|
jz s_error
|
|
|
|
cmp [eax + SOCKET.Domain], AF_INET4
|
|
jne s_error
|
|
|
|
cmp [eax + SOCKET.Protocol], IP_PROTO_TCP
|
|
jne s_error
|
|
|
|
.loop:
|
|
get_from_queue (eax + SOCKET_QUEUE_LOCATION), MAX_backlog, 4, .block
|
|
|
|
; Ok, we got a socket ptr
|
|
mov eax, [esi]
|
|
|
|
; Change PID to that of the current process
|
|
mov ebx, [TASK_BASE]
|
|
mov ebx, [ebx + TASKDATA.pid]
|
|
mov [eax + SOCKET.PID], ebx
|
|
|
|
; Convert it to a socket number
|
|
call SOCKET_ptr_to_num
|
|
jz s_error
|
|
; and return it to caller
|
|
mov [esp+32], eax
|
|
ret
|
|
|
|
.block:
|
|
SOCKET_block eax, .loop, s_error
|
|
|
|
;-----------------------------------------------------------------
|
|
;
|
|
; SOCKET_close
|
|
;
|
|
; IN: socket number in ecx
|
|
; OUT: eax is socket num, -1 on error
|
|
;
|
|
;-----------------------------------------------------------------
|
|
align 4
|
|
SOCKET_close:
|
|
|
|
DEBUGF 2,"SOCKET_close: socknum=%u\n", ecx
|
|
|
|
call SOCKET_num_to_ptr
|
|
jz s_error
|
|
|
|
cmp [eax + SOCKET.Domain], AF_INET4
|
|
jne s_error
|
|
|
|
cmp [eax + SOCKET.Protocol], IP_PROTO_UDP
|
|
je .free
|
|
|
|
cmp [eax + SOCKET.Protocol], IP_PROTO_ICMP
|
|
je .free
|
|
|
|
cmp [eax + SOCKET.Protocol], IP_PROTO_IP
|
|
je .free
|
|
|
|
cmp [eax + SOCKET.Protocol], IP_PROTO_TCP
|
|
je .tcp
|
|
|
|
jmp s_error
|
|
|
|
.tcp:
|
|
cmp [eax + TCP_SOCKET.t_state], TCPS_SYN_RECEIVED ; state must be LISTEN, SYN_SENT or CLOSED
|
|
jb .free
|
|
|
|
call TCP_usrclosed
|
|
call TCP_output ;;;; Fixme: is this nescessary??
|
|
|
|
;;; TODO: wait for successfull termination if blocking socket
|
|
mov dword [esp+32], 0
|
|
|
|
ret
|
|
|
|
.free:
|
|
call SOCKET_free
|
|
mov dword [esp+32], 0
|
|
|
|
ret
|
|
|
|
|
|
;-----------------------------------------------------------------
|
|
;
|
|
; SOCKET_receive
|
|
;
|
|
; IN: socket number in ecx
|
|
; addr to buffer in edx
|
|
; length of buffer in esi
|
|
; flags in edi
|
|
; OUT: eax is number of bytes copied, -1 on error
|
|
;
|
|
;-----------------------------------------------------------------
|
|
align 4
|
|
SOCKET_receive:
|
|
|
|
DEBUGF 2,"SOCKET_receive: socknum=%u bufaddr=%x buflength=%u flags=%x\n", ecx, edx, esi, edi
|
|
|
|
call SOCKET_num_to_ptr
|
|
jz s_error
|
|
|
|
jmp [eax + SOCKET.rcv_proc]
|
|
|
|
|
|
align 4
|
|
SOCKET_receive_dgram:
|
|
|
|
DEBUGF 1,"SOCKET_receive: DGRAM\n"
|
|
|
|
mov ebx, esi
|
|
mov edi, edx ; addr to buffer
|
|
|
|
.loop:
|
|
get_from_queue (eax + SOCKET_QUEUE_LOCATION), SOCKET_QUEUE_SIZE, sizeof.socket_queue_entry, .block ; destroys esi and ecx
|
|
|
|
mov ecx, [esi + socket_queue_entry.data_size]
|
|
DEBUGF 1,"SOCKET_receive: %u bytes data\n", ecx
|
|
|
|
cmp ecx, ebx
|
|
ja .too_small
|
|
|
|
push [esi + socket_queue_entry.buf_ptr] ; save the buffer addr so we can clear it later
|
|
mov esi, [esi + socket_queue_entry.data_ptr]
|
|
DEBUGF 1,"SOCKET_receive: Source buffer=%x real addr=%x\n", [esp], esi
|
|
mov [esp+32+4], ecx ; return number of bytes copied
|
|
|
|
; copy the data
|
|
shr ecx, 1
|
|
jnc .nb
|
|
movsb
|
|
.nb:
|
|
shr ecx, 1
|
|
jnc .nw
|
|
movsw
|
|
.nw:
|
|
test ecx, ecx
|
|
jz .nd
|
|
rep movsd
|
|
.nd:
|
|
|
|
call kernel_free ; remove the packet
|
|
ret
|
|
|
|
.too_small:
|
|
|
|
DEBUGF 2,"SOCKET_receive: Buffer too small\n"
|
|
jmp s_error
|
|
|
|
.block:
|
|
SOCKET_block eax, .loop, s_error
|
|
|
|
align 4
|
|
SOCKET_receive_local:
|
|
|
|
; does this socket have a PID yet?
|
|
cmp [eax + SOCKET.PID], 0
|
|
jne @f
|
|
|
|
; Change PID to that of current process
|
|
mov ebx, [TASK_BASE]
|
|
mov ebx, [ebx + TASKDATA.pid]
|
|
mov [eax + SOCKET.PID], ebx
|
|
@@:
|
|
|
|
mov [eax + SOCKET.rcv_proc], SOCKET_receive_stream
|
|
|
|
align 4
|
|
SOCKET_receive_stream:
|
|
|
|
DEBUGF 1,"SOCKET_receive: STREAM\n"
|
|
|
|
mov ecx, esi
|
|
mov edi, edx
|
|
xor edx, edx
|
|
add eax, STREAM_SOCKET.rcv
|
|
.loop:
|
|
cmp [eax + RING_BUFFER.size], 0
|
|
je .block
|
|
call SOCKET_ring_read
|
|
call SOCKET_ring_free
|
|
|
|
mov [esp+32], ecx ; return number of bytes copied
|
|
ret
|
|
|
|
.block:
|
|
SOCKET_block (eax - STREAM_SOCKET.rcv), .loop, s_error
|
|
|
|
|
|
;-----------------------------------------------------------------
|
|
;
|
|
; SOCKET_send
|
|
;
|
|
;
|
|
; IN: socket number in ecx
|
|
; pointer to data in edx
|
|
; datalength in esi
|
|
; flags in edi
|
|
; OUT: -1 on error
|
|
;
|
|
;-----------------------------------------------------------------
|
|
align 4
|
|
SOCKET_send:
|
|
|
|
DEBUGF 2,"SOCKET_send: socknum=%u data ptr=%x length=%u flags=%x\n", ecx, edx, esi, edi
|
|
|
|
call SOCKET_num_to_ptr
|
|
jz s_error
|
|
|
|
mov ecx, esi
|
|
mov esi, edx
|
|
|
|
jmp [eax + SOCKET.snd_proc]
|
|
|
|
|
|
align 4
|
|
SOCKET_send_udp:
|
|
|
|
DEBUGF 1,"SOCKET_send: UDP\n"
|
|
|
|
mov [esp+32], ecx
|
|
call UDP_output
|
|
cmp eax, -1
|
|
je s_error
|
|
ret
|
|
|
|
|
|
align 4
|
|
SOCKET_send_tcp:
|
|
|
|
DEBUGF 1,"SOCKET_send: TCP\n"
|
|
|
|
push eax
|
|
add eax, STREAM_SOCKET.snd
|
|
call SOCKET_ring_write
|
|
pop eax
|
|
|
|
mov [esp+32], ecx
|
|
|
|
call TCP_output
|
|
ret
|
|
|
|
|
|
align 4
|
|
SOCKET_send_ip:
|
|
|
|
DEBUGF 1,"SOCKET_send: IPv4\n"
|
|
|
|
mov [esp+32], ecx
|
|
call IPv4_output_raw
|
|
cmp eax, -1
|
|
je s_error
|
|
ret
|
|
|
|
|
|
align 4
|
|
SOCKET_send_icmp:
|
|
|
|
DEBUGF 1,"SOCKET_send: ICMP\n"
|
|
|
|
mov [esp+32], ecx
|
|
call ICMP_output_raw
|
|
cmp eax, -1
|
|
je s_error
|
|
ret
|
|
|
|
|
|
align 4
|
|
SOCKET_send_pppoe:
|
|
|
|
DEBUGF 1,"SOCKET_send: PPPoE\n"
|
|
|
|
mov [esp+32], ecx
|
|
mov ebx, [eax + SOCKET.device]
|
|
|
|
call PPPoE_discovery_output
|
|
cmp eax, -1
|
|
je s_error
|
|
ret
|
|
|
|
|
|
|
|
align 4
|
|
SOCKET_send_local:
|
|
|
|
; does this socket have a PID yet?
|
|
cmp [eax + SOCKET.PID], 0
|
|
jne @f
|
|
|
|
; Change PID to that of current process
|
|
mov ebx, [TASK_BASE]
|
|
mov ebx, [ebx + TASKDATA.pid]
|
|
mov [eax + SOCKET.PID], ebx
|
|
@@:
|
|
mov [eax + SOCKET.snd_proc], SOCKET_send_local_
|
|
|
|
align 4
|
|
SOCKET_send_local_:
|
|
|
|
DEBUGF 1,"SOCKET_send: LOCAL\n"
|
|
|
|
; get the other side's socket and check if it still exists
|
|
mov eax, [eax + SOCKET.device]
|
|
call SOCKET_check
|
|
jz s_error
|
|
|
|
; allright, shove in the data!
|
|
push eax
|
|
add eax, STREAM_SOCKET.rcv
|
|
call SOCKET_ring_write
|
|
pop eax
|
|
|
|
; return the number of written bytes (or errorcode) to application
|
|
mov [esp+32], ecx
|
|
|
|
; and notify the other end
|
|
call SOCKET_notify_owner
|
|
|
|
ret
|
|
|
|
|
|
;-----------------------------------------------------------------
|
|
;
|
|
; SOCKET_get_options
|
|
;
|
|
; IN: ecx = socket number
|
|
; edx = pointer to the options:
|
|
; dd level, optname, optval, optlen
|
|
; OUT: -1 on error
|
|
;
|
|
; At moment, uses only pseudo-optname -2 for get last_ack_number for TCP.
|
|
; TODO: find best way to notify that send()'ed data were acknowledged
|
|
; Also pseudo-optname -3 is valid and returns socket state, one of TCPS_*.
|
|
;
|
|
;-----------------------------------------------------------------
|
|
align 4
|
|
SOCKET_get_opt:
|
|
|
|
DEBUGF 2,"SOCKET_get_opt\n"
|
|
|
|
call SOCKET_num_to_ptr
|
|
jz s_error
|
|
|
|
cmp dword [edx], IP_PROTO_TCP
|
|
jne s_error
|
|
cmp dword [edx+4], -2
|
|
je @f
|
|
cmp dword [edx+4], -3
|
|
jne s_error
|
|
@@:
|
|
; mov eax, [edx+12]
|
|
; test eax, eax
|
|
; jz .fail
|
|
; cmp dword [eax], 4
|
|
; mov dword [eax], 4
|
|
; jb .fail
|
|
; stdcall net_socket_num_to_addr, ecx
|
|
; test eax, eax
|
|
; jz .fail
|
|
; ; todo: check that eax is really TCP socket
|
|
; mov ecx, [eax + TCP_SOCKET.last_ack_number]
|
|
; cmp dword [edx+4], -2
|
|
; jz @f
|
|
; mov ecx, [eax + TCP_SOCKET.state]
|
|
@@:
|
|
mov eax, [edx+8]
|
|
test eax, eax
|
|
jz @f
|
|
mov [eax], ecx
|
|
@@:
|
|
mov dword [esp+32], 0
|
|
ret
|
|
|
|
|
|
|
|
;-----------------------------------------------------------------
|
|
;
|
|
; SOCKET_set_options
|
|
;
|
|
; IN: ecx = socket number
|
|
; edx = pointer to the options:
|
|
; dd level, optname, optlen, optval
|
|
; OUT: -1 on error
|
|
;
|
|
;-----------------------------------------------------------------
|
|
align 4
|
|
SOCKET_set_opt:
|
|
|
|
DEBUGF 2,"SOCKET_set_opt\n"
|
|
|
|
call SOCKET_num_to_ptr
|
|
jz s_error
|
|
|
|
cmp dword [edx], SOL_SOCKET
|
|
jne s_error
|
|
|
|
cmp dword [edx+4], SO_BINDTODEVICE
|
|
je .bind
|
|
|
|
cmp dword [edx+4], SO_BLOCK
|
|
je .block
|
|
|
|
jmp s_error
|
|
|
|
.bind:
|
|
cmp dword [edx+8], 0
|
|
je .unbind
|
|
|
|
movzx edx, byte [edx + 9]
|
|
cmp edx, MAX_NET_DEVICES
|
|
ja s_error
|
|
|
|
mov edx, [NET_DRV_LIST + 4*edx]
|
|
test edx, edx
|
|
jz s_error
|
|
mov [eax + SOCKET.device], edx
|
|
|
|
DEBUGF 1,"SOCKET_set_opt: Bound socket %x to device %x\n",eax, edx
|
|
|
|
mov dword [esp+32], 0 ; success!
|
|
ret
|
|
|
|
.unbind:
|
|
mov [eax + SOCKET.device], 0
|
|
|
|
mov dword [esp+32], 0 ; success!
|
|
ret
|
|
|
|
.block:
|
|
cmp dword [edx+8], 0
|
|
je .unblock
|
|
|
|
or [eax + SOCKET.options], SO_BLOCK
|
|
|
|
mov dword [esp+32], 0 ; success!
|
|
ret
|
|
|
|
.unblock:
|
|
and [eax + SOCKET.options], not SO_BLOCK
|
|
|
|
mov dword [esp+32], 0 ; success!
|
|
ret
|
|
|
|
|
|
|
|
;-----------------------------------------------------------------
|
|
;
|
|
; SOCKET_pair
|
|
;
|
|
; Allocates a pair of linked LOCAL domain sockets
|
|
;
|
|
; IN: /
|
|
; OUT: eax is socket1 num, -1 on error
|
|
; ebx is socket2 num
|
|
;
|
|
;-----------------------------------------------------------------
|
|
align 4
|
|
SOCKET_pair:
|
|
|
|
DEBUGF 2,"SOCKET_pair\n"
|
|
|
|
call SOCKET_alloc
|
|
jz s_error
|
|
mov [esp+32], edi ; application's eax
|
|
|
|
mov [eax + SOCKET.Domain], AF_LOCAL
|
|
mov [eax + SOCKET.Type], SOCK_STREAM
|
|
mov [eax + SOCKET.Protocol], 0 ;;; CHECKME
|
|
mov [eax + SOCKET.snd_proc], SOCKET_send_local
|
|
mov [eax + SOCKET.rcv_proc], SOCKET_receive_local
|
|
mov ebx, eax
|
|
|
|
call SOCKET_alloc
|
|
jz .error
|
|
mov [esp+24], edi ; application's ebx
|
|
|
|
mov [eax + SOCKET.Domain], AF_LOCAL
|
|
mov [eax + SOCKET.Type], SOCK_STREAM
|
|
mov [eax + SOCKET.Protocol], 0 ;;; CHECKME
|
|
mov [eax + SOCKET.snd_proc], SOCKET_send_local
|
|
mov [eax + SOCKET.rcv_proc], SOCKET_receive_local
|
|
|
|
; Link the two sockets to eachother
|
|
mov [eax + SOCKET.device], ebx
|
|
mov [ebx + SOCKET.device], eax
|
|
|
|
lea eax, [eax + STREAM_SOCKET.rcv]
|
|
call SOCKET_ring_create
|
|
|
|
lea eax, [ebx + STREAM_SOCKET.rcv]
|
|
call SOCKET_ring_create
|
|
pop eax
|
|
|
|
ret
|
|
|
|
.error:
|
|
mov eax, ebx
|
|
call SOCKET_free
|
|
jmp s_error
|
|
|
|
|
|
|
|
;-----------------------------------------------------------------
|
|
;
|
|
; SOCKET_debug
|
|
;
|
|
; Copies socket variables to application buffer
|
|
;
|
|
; IN: ecx = socket number
|
|
; edx = pointer to buffer
|
|
;
|
|
; OUT: -1 on error
|
|
;-----------------------------------------------------------------
|
|
align 4
|
|
SOCKET_debug:
|
|
|
|
DEBUGF 1,"SOCKET_debug\n"
|
|
|
|
mov edi, edx
|
|
|
|
test ecx, ecx
|
|
jz .returnall
|
|
|
|
call SOCKET_num_to_ptr
|
|
jz s_error
|
|
|
|
mov esi, eax
|
|
mov ecx, SOCKETBUFFSIZE/4
|
|
rep movsd
|
|
|
|
mov dword [esp+32], 0
|
|
ret
|
|
|
|
.returnall:
|
|
mov ebx, net_sockets
|
|
.next_socket:
|
|
mov ebx, [ebx + SOCKET.NextPtr]
|
|
test ebx, ebx
|
|
jz .done
|
|
mov eax, [ebx + SOCKET.Number]
|
|
stosd
|
|
jmp .next_socket
|
|
.done:
|
|
xor eax, eax
|
|
stosd
|
|
|
|
mov dword [esp+32], 0
|
|
ret
|
|
|
|
|
|
;-----------------------------------------------------------------
|
|
;
|
|
; SOCKET_find_port
|
|
;
|
|
; Fills in the local port number for TCP and UDP sockets
|
|
; This procedure always works because the number of sockets is
|
|
; limited to a smaller number then the number of possible ports
|
|
;
|
|
; IN: eax = socket pointer
|
|
; OUT: /
|
|
;
|
|
;-----------------------------------------------------------------
|
|
align 4
|
|
SOCKET_find_port:
|
|
|
|
DEBUGF 2,"SOCKET_find_port\n"
|
|
|
|
push ebx esi ecx
|
|
|
|
cmp [eax + SOCKET.Protocol], IP_PROTO_UDP
|
|
je .udp
|
|
|
|
cmp [eax + SOCKET.Protocol], IP_PROTO_TCP
|
|
je .tcp
|
|
|
|
pop ecx esi ebx
|
|
ret
|
|
|
|
.udp:
|
|
mov bx, [last_UDP_port]
|
|
call .findit
|
|
mov [last_UDP_port], bx
|
|
|
|
pop ecx esi ebx
|
|
ret
|
|
|
|
.tcp:
|
|
mov bx, [last_TCP_port]
|
|
call .findit
|
|
mov [last_TCP_port], bx
|
|
|
|
pop ecx esi ebx
|
|
ret
|
|
|
|
|
|
.restart:
|
|
mov bx, MIN_EPHEMERAL_PORT_N
|
|
.findit:
|
|
cmp bx, MAX_EPHEMERAL_PORT_N
|
|
je .restart
|
|
|
|
add bh, 1
|
|
adc bl, 0
|
|
|
|
call SOCKET_check_port
|
|
jz .findit
|
|
ret
|
|
|
|
|
|
|
|
;-----------------------------------------------------------------
|
|
;
|
|
; SOCKET_check_port (to be used with AF_INET only!)
|
|
;
|
|
; Checks if a local port number is unused
|
|
; If the proposed port number is unused, it is filled in in the socket structure
|
|
;
|
|
; IN: eax = socket ptr (to find out if its a TCP/UDP socket)
|
|
; bx = proposed socket number (network byte order)
|
|
;
|
|
; OUT: ZF = set on error
|
|
;
|
|
;-----------------------------------------------------------------
|
|
align 4
|
|
SOCKET_check_port:
|
|
|
|
DEBUGF 2,"SOCKET_check_port: "
|
|
|
|
mov ecx, [eax + SOCKET.Protocol]
|
|
mov edx, [eax + IP_SOCKET.LocalIP]
|
|
mov esi, net_sockets
|
|
|
|
.next_socket:
|
|
mov esi, [esi + SOCKET.NextPtr]
|
|
or esi, esi
|
|
jz .port_ok
|
|
|
|
cmp [esi + SOCKET.Protocol], ecx
|
|
jne .next_socket
|
|
|
|
cmp [esi + IP_SOCKET.LocalIP], edx
|
|
jne .next_socket
|
|
|
|
cmp [esi + UDP_SOCKET.LocalPort], bx
|
|
jne .next_socket
|
|
|
|
DEBUGF 2,"local port %x already in use\n", bx ; FIXME: find a way to print big endian values with debugf
|
|
ret
|
|
|
|
.port_ok:
|
|
DEBUGF 2,"local port %x is free\n", bx ; FIXME: find a way to print big endian values with debugf
|
|
mov [eax + UDP_SOCKET.LocalPort], bx
|
|
or bx, bx ; clear the zero-flag
|
|
ret
|
|
|
|
|
|
|
|
;-----------------------------------------------------------------
|
|
;
|
|
; SOCKET_input
|
|
;
|
|
; Updates a (stateless) socket with received data
|
|
;
|
|
; Note: the mutex should already be set !
|
|
;
|
|
; IN: eax = socket ptr
|
|
; ecx = data size
|
|
; esi = ptr to data
|
|
; [esp] = ptr to buf
|
|
; [esp + 4] = buf size
|
|
;
|
|
; OUT: /
|
|
;
|
|
;-----------------------------------------------------------------
|
|
align 4
|
|
SOCKET_input:
|
|
|
|
DEBUGF 2,"SOCKET_input: socket=%x, data=%x size=%u\n", eax, esi, ecx
|
|
|
|
mov [esp+4], ecx
|
|
push esi
|
|
mov esi, esp
|
|
|
|
add_to_queue (eax + SOCKET_QUEUE_LOCATION), SOCKET_QUEUE_SIZE, sizeof.socket_queue_entry, SOCKET_input.full
|
|
|
|
DEBUGF 1,"SOCKET_input: success\n"
|
|
add esp, sizeof.socket_queue_entry
|
|
|
|
pusha
|
|
lea ecx, [eax + SOCKET.mutex]
|
|
call mutex_unlock
|
|
popa
|
|
|
|
jmp SOCKET_notify_owner
|
|
|
|
.full:
|
|
DEBUGF 2,"SOCKET_input: socket %x is full!\n", eax
|
|
|
|
pusha
|
|
lea ecx, [eax + SOCKET.mutex]
|
|
call mutex_unlock
|
|
popa
|
|
|
|
call kernel_free
|
|
add esp, 8
|
|
|
|
ret
|
|
|
|
|
|
;--------------------------
|
|
;
|
|
; eax = ptr to ring struct (just a buffer of the right size)
|
|
;
|
|
align 4
|
|
SOCKET_ring_create:
|
|
|
|
push esi
|
|
mov esi, eax
|
|
|
|
push edx
|
|
stdcall create_ring_buffer, SOCKET_MAXDATA, PG_SW
|
|
pop edx
|
|
|
|
DEBUGF 1,"SOCKET_ring_created: %x\n", eax
|
|
mov [esi + RING_BUFFER.start_ptr], eax
|
|
mov [esi + RING_BUFFER.write_ptr], eax
|
|
mov [esi + RING_BUFFER.read_ptr], eax
|
|
mov [esi + RING_BUFFER.size], 0
|
|
add eax, SOCKET_MAXDATA
|
|
mov [esi + RING_BUFFER.end_ptr], eax
|
|
mov eax, esi
|
|
pop esi
|
|
|
|
ret
|
|
|
|
;-----------------------------------------------------------------
|
|
;
|
|
; SOCKET_ring_write
|
|
;
|
|
; Adds data to a stream socket, and updates write pointer and size
|
|
;
|
|
; IN: eax = ptr to ring struct
|
|
; ecx = data size
|
|
; esi = ptr to data
|
|
;
|
|
; OUT: ecx = number of bytes stored
|
|
;
|
|
;-----------------------------------------------------------------
|
|
align 4
|
|
SOCKET_ring_write:
|
|
|
|
DEBUGF 1,"SOCKET_ring_write: ringbuff=%x ptr=%x size=%u\n", eax, esi, ecx
|
|
|
|
add [eax + RING_BUFFER.size], ecx
|
|
jc .way_too_large
|
|
cmp [eax + RING_BUFFER.size], SOCKET_MAXDATA
|
|
ja .too_large
|
|
|
|
.copy:
|
|
mov edi, [eax + RING_BUFFER.write_ptr]
|
|
DEBUGF 2,"SOCKET_ring_write: %u bytes from %x to %x\n", ecx, esi, edi
|
|
|
|
push ecx
|
|
shr ecx, 1
|
|
jnc .nb
|
|
movsb
|
|
.nb:
|
|
shr ecx, 1
|
|
jnc .nw
|
|
movsw
|
|
.nw:
|
|
test ecx, ecx
|
|
jz .nd
|
|
rep movsd
|
|
.nd:
|
|
pop ecx
|
|
|
|
cmp edi, [eax + RING_BUFFER.end_ptr]
|
|
jae .wrap
|
|
mov [eax + RING_BUFFER.write_ptr], edi
|
|
|
|
ret
|
|
|
|
.wrap:
|
|
sub edi, SOCKET_MAXDATA
|
|
mov [eax + RING_BUFFER.write_ptr], edi
|
|
|
|
ret
|
|
|
|
.too_large: ; update size, we will fill buffer completely
|
|
sub [eax + RING_BUFFER.size], SOCKET_MAXDATA
|
|
sub ecx, [eax + RING_BUFFER.size]
|
|
mov [eax + RING_BUFFER.size], SOCKET_MAXDATA
|
|
ja .copy
|
|
|
|
.full:
|
|
DEBUGF 2,"SOCKET_ring_write: ring buffer is full!\n"
|
|
xor ecx, ecx
|
|
ret
|
|
|
|
.way_too_large:
|
|
sub [eax + RING_BUFFER.size], ecx
|
|
mov ecx, SOCKET_MAXDATA
|
|
sub ecx, [eax + RING_BUFFER.size]
|
|
ja .copy
|
|
jmp .full
|
|
|
|
|
|
|
|
;-----------------------------------------------------------------
|
|
;
|
|
; SOCKET_ring_read
|
|
;
|
|
; IN: eax = ring struct ptr
|
|
; ecx = bytes to read
|
|
; edx = offset
|
|
; edi = ptr to buffer start
|
|
;
|
|
; OUT: eax = unchanged
|
|
; ecx = number of bytes read (0 on error)
|
|
; edx = destroyed
|
|
; esi = destroyed
|
|
; edi = ptr to buffer end
|
|
;
|
|
;-----------------------------------------------------------------
|
|
align 4
|
|
SOCKET_ring_read:
|
|
|
|
DEBUGF 1,"SOCKET_ring_read: ringbuff=%x ptr=%x size=%u offset=%x\n", eax, edi, ecx, edx
|
|
|
|
mov esi, [eax + RING_BUFFER.read_ptr]
|
|
add esi, edx ; esi = start_ptr + offset
|
|
|
|
neg edx
|
|
add edx, [eax + RING_BUFFER.size] ; edx = snd.size - offset
|
|
jle .no_data_at_all
|
|
|
|
cmp ecx, edx
|
|
ja .less_data
|
|
|
|
.copy:
|
|
DEBUGF 2,"SOCKET_ring_read: %u bytes from %x to %x\n", ecx, esi, edi
|
|
push ecx
|
|
shr ecx, 1
|
|
jnc .nb
|
|
movsb
|
|
.nb:
|
|
shr ecx, 1
|
|
jnc .nw
|
|
movsw
|
|
.nw:
|
|
test ecx, ecx
|
|
jz .nd
|
|
rep movsd
|
|
.nd:
|
|
pop ecx
|
|
ret
|
|
|
|
.no_data_at_all:
|
|
DEBUGF 1,"SOCKET_ring_read: no data at all!\n"
|
|
xor ecx, ecx
|
|
ret
|
|
|
|
.less_data:
|
|
mov ecx, edx
|
|
jmp .copy
|
|
|
|
|
|
;-----------------------------------------------------------------
|
|
;
|
|
; SOCKET_ring_free
|
|
;
|
|
; Free's some bytes from the ringbuffer
|
|
;
|
|
; IN: eax = ptr to ring struct
|
|
; ecx = data size
|
|
;
|
|
; OUT: ecx = number of bytes free-ed
|
|
;
|
|
;-----------------------------------------------------------------
|
|
align 4
|
|
SOCKET_ring_free:
|
|
|
|
DEBUGF 1,"SOCKET_ring_free: %u bytes from ring %x\n", ecx, eax
|
|
|
|
sub [eax + RING_BUFFER.size], ecx
|
|
jb .error
|
|
add [eax + RING_BUFFER.read_ptr], ecx
|
|
|
|
mov edx, [eax + RING_BUFFER.end_ptr]
|
|
cmp [eax + RING_BUFFER.read_ptr], edx
|
|
jb @f
|
|
sub [eax + RING_BUFFER.read_ptr], SOCKET_MAXDATA
|
|
@@:
|
|
ret
|
|
|
|
.error: ; we could free all available bytes, but that would be stupid, i guess..
|
|
DEBUGF 1,"SOCKET_ring_free: buffer=%x error!\n", eax
|
|
add [eax + RING_BUFFER.size], ecx
|
|
xor ecx, ecx
|
|
ret
|
|
|
|
|
|
;-----------------------------------------------------------------
|
|
;
|
|
; SOCKET_notify_owner
|
|
;
|
|
; notify's the owner of a socket that something happened
|
|
;
|
|
; IN: eax = socket ptr
|
|
; OUT: /
|
|
;
|
|
;-----------------------------------------------------------------
|
|
align 4
|
|
SOCKET_notify_owner:
|
|
|
|
DEBUGF 1,"SOCKET_notify_owner: %x\n", eax
|
|
|
|
call SOCKET_check
|
|
jz .error
|
|
|
|
push eax ecx esi
|
|
|
|
; socket exists, now try to flag an event to the application
|
|
|
|
mov eax, [eax + SOCKET.PID]
|
|
test eax, eax
|
|
jz .error2
|
|
mov ecx, 1
|
|
mov esi, TASK_DATA + TASKDATA.pid
|
|
|
|
.next_pid:
|
|
cmp [esi], eax
|
|
je .found_pid
|
|
inc ecx
|
|
add esi, 0x20
|
|
cmp ecx, [TASK_COUNT]
|
|
jbe .next_pid
|
|
|
|
; PID not found, TODO: close socket!
|
|
|
|
jmp .error2
|
|
|
|
.found_pid:
|
|
shl ecx, 8
|
|
or [ecx + SLOT_BASE + APPDATA.event_mask], EVENT_NETWORK
|
|
mov [check_idle_semaphore], 200
|
|
|
|
DEBUGF 1,"SOCKET_notify_owner: succes!\n"
|
|
|
|
.error2:
|
|
pop esi ecx eax
|
|
|
|
.error:
|
|
|
|
ret
|
|
|
|
|
|
;--------------------------------------------------------------------
|
|
;
|
|
; SOCKET_alloc
|
|
;
|
|
; Allocate memory for socket data and put new socket into the list
|
|
; Newly created socket is initialized with calling PID and number and
|
|
; put into beginning of list (which is a fastest way).
|
|
;
|
|
; IN: /
|
|
; OUT: eax = 0 on error, socket ptr otherwise
|
|
; edi = socket number
|
|
; ZF = cleared on error
|
|
;
|
|
;--------------------------------------------------------------------
|
|
align 4
|
|
SOCKET_alloc:
|
|
|
|
push ebx
|
|
|
|
stdcall kernel_alloc, SOCKETBUFFSIZE
|
|
DEBUGF 1, "SOCKET_alloc: ptr=%x\n", eax
|
|
or eax, eax
|
|
jz .exit
|
|
|
|
; zero-initialize allocated memory
|
|
push eax
|
|
mov edi, eax
|
|
mov ecx, SOCKETBUFFSIZE / 4
|
|
xor eax, eax
|
|
rep stosd
|
|
pop eax
|
|
|
|
; set send-and receive procedures to return -1
|
|
mov [eax + SOCKET.snd_proc], s_error
|
|
mov [eax + SOCKET.rcv_proc], s_error
|
|
|
|
; find first free socket number and use it
|
|
mov edi, [last_socket_num]
|
|
.next_socket_number:
|
|
inc edi
|
|
jz .next_socket_number ; avoid socket nr 0
|
|
cmp edi, -1
|
|
je .next_socket_number ; avoid socket nr -1
|
|
mov ebx, net_sockets
|
|
.next_socket:
|
|
mov ebx, [ebx + SOCKET.NextPtr]
|
|
test ebx, ebx
|
|
jz .last_socket
|
|
|
|
cmp [ebx + SOCKET.Number], edi
|
|
jne .next_socket
|
|
jmp .next_socket_number
|
|
|
|
.last_socket:
|
|
mov [last_socket_num], edi
|
|
mov [eax + SOCKET.Number], edi
|
|
DEBUGF 1, "SOCKET_alloc: number=%u\n", edi
|
|
|
|
; Fill in PID
|
|
mov ebx, [TASK_BASE]
|
|
mov ebx, [ebx + TASKDATA.pid]
|
|
mov [eax + SOCKET.PID], ebx
|
|
|
|
; init mutex
|
|
pusha
|
|
lea ecx, [eax + SOCKET.mutex]
|
|
call mutex_init
|
|
popa
|
|
|
|
; add socket to the list by re-arranging some pointers
|
|
mov ebx, [net_sockets + SOCKET.NextPtr]
|
|
|
|
mov [eax + SOCKET.PrevPtr], net_sockets
|
|
mov [eax + SOCKET.NextPtr], ebx
|
|
|
|
test ebx, ebx
|
|
jz @f
|
|
|
|
pusha
|
|
lea ecx, [ebx + SOCKET.mutex]
|
|
call mutex_lock
|
|
popa
|
|
|
|
mov [ebx + SOCKET.PrevPtr], eax
|
|
|
|
pusha
|
|
lea ecx, [ebx + SOCKET.mutex]
|
|
call mutex_unlock
|
|
popa
|
|
@@:
|
|
|
|
mov [net_sockets + SOCKET.NextPtr], eax
|
|
or eax, eax ; used to clear zero flag
|
|
.exit:
|
|
pop ebx
|
|
|
|
ret
|
|
|
|
|
|
;----------------------------------------------------
|
|
;
|
|
; SOCKET_free
|
|
;
|
|
; Free socket data memory and remove socket from the list
|
|
;
|
|
; IN: eax = socket ptr
|
|
; OUT: /
|
|
;
|
|
;----------------------------------------------------
|
|
align 4
|
|
SOCKET_free:
|
|
|
|
DEBUGF 1, "SOCKET_free: %x\n", eax
|
|
|
|
call SOCKET_check
|
|
jz .error
|
|
|
|
push ebx
|
|
|
|
pusha
|
|
lea ecx, [eax + SOCKET.mutex]
|
|
call mutex_lock
|
|
popa
|
|
|
|
cmp [eax + SOCKET.Domain], AF_INET4
|
|
jnz .no_tcp
|
|
|
|
cmp [eax + SOCKET.Protocol], IP_PROTO_TCP
|
|
jnz .no_tcp
|
|
|
|
mov ebx, eax
|
|
stdcall kernel_free, [ebx + STREAM_SOCKET.rcv.start_ptr]
|
|
stdcall kernel_free, [ebx + STREAM_SOCKET.snd.start_ptr]
|
|
mov eax, ebx
|
|
.no_tcp:
|
|
|
|
push eax ; this will be passed to kernel_free
|
|
mov ebx, [eax + SOCKET.NextPtr]
|
|
mov eax, [eax + SOCKET.PrevPtr]
|
|
|
|
DEBUGF 1, "SOCKET_free: linking socket %x to socket %x\n", eax, ebx
|
|
|
|
test eax, eax
|
|
jz @f
|
|
mov [eax + SOCKET.NextPtr], ebx
|
|
@@:
|
|
|
|
test ebx, ebx
|
|
jz @f
|
|
mov [ebx + SOCKET.PrevPtr], eax
|
|
@@:
|
|
|
|
call kernel_free
|
|
pop ebx
|
|
|
|
DEBUGF 1, "SOCKET_free: success!\n"
|
|
|
|
.error:
|
|
ret
|
|
|
|
;------------------------------------
|
|
;
|
|
; SOCKET_fork
|
|
;
|
|
; Create a child socket
|
|
;
|
|
; IN: socket nr in ebx
|
|
; OUT: child socket nr in eax
|
|
;
|
|
;-----------------------------------
|
|
align 4
|
|
SOCKET_fork:
|
|
|
|
DEBUGF 1,"SOCKET_fork: %x\n", ebx
|
|
|
|
; Exit if backlog queue is full
|
|
mov eax, [ebx + SOCKET_QUEUE_LOCATION + queue.size]
|
|
cmp ax, [ebx + SOCKET.backlog]
|
|
jae .fail
|
|
|
|
; Allocate new socket
|
|
push ebx
|
|
call SOCKET_alloc
|
|
pop ebx
|
|
jz .fail
|
|
|
|
push eax
|
|
mov esi, esp
|
|
add_to_queue (ebx + SOCKET_QUEUE_LOCATION), MAX_backlog, 4, .fail2
|
|
pop eax
|
|
|
|
; Copy structure from current socket to new
|
|
; We start at PID to preserve the socket num, and the 2 pointers at beginning of socket
|
|
lea esi, [ebx + SOCKET.PID]
|
|
lea edi, [eax + SOCKET.PID]
|
|
mov ecx, (SOCKET_QUEUE_LOCATION - SOCKET.PID + 3)/4
|
|
rep movsd
|
|
|
|
and [eax + SOCKET.options], not SO_ACCEPTCON
|
|
|
|
ret
|
|
|
|
.fail2:
|
|
add esp, 4+4+4
|
|
.fail:
|
|
DEBUGF 1,"SOCKET_fork: failed\n"
|
|
xor eax, eax
|
|
ret
|
|
|
|
|
|
;---------------------------------------------------
|
|
;
|
|
; SOCKET_num_to_ptr
|
|
;
|
|
; Get socket structure address by its number
|
|
;
|
|
; IN: ecx = socket number
|
|
; OUT: eax = 0 on error, socket ptr otherwise
|
|
; ZF = set on error
|
|
;
|
|
;---------------------------------------------------
|
|
align 4
|
|
SOCKET_num_to_ptr:
|
|
|
|
DEBUGF 1,"SOCKET_num_to_ptr: num=%u ", ecx
|
|
|
|
mov eax, net_sockets
|
|
|
|
.next_socket:
|
|
mov eax, [eax + SOCKET.NextPtr]
|
|
or eax, eax
|
|
jz .error
|
|
cmp [eax + SOCKET.Number], ecx
|
|
jne .next_socket
|
|
|
|
test eax, eax
|
|
|
|
DEBUGF 1,"ptr=%x\n", eax
|
|
ret
|
|
|
|
.error:
|
|
DEBUGF 1,"not found\n", eax
|
|
ret
|
|
|
|
|
|
;---------------------------------------------------
|
|
;
|
|
; SOCKET_ptr_to_num
|
|
;
|
|
; Get socket number by its address
|
|
;
|
|
; IN: eax = socket ptr
|
|
; OUT: eax = 0 on error, socket num otherwise
|
|
; ZF = set on error
|
|
;
|
|
;---------------------------------------------------
|
|
align 4
|
|
SOCKET_ptr_to_num:
|
|
|
|
DEBUGF 1,"SOCKET_ptr_to_num: ptr=%x ", eax
|
|
|
|
call SOCKET_check
|
|
jz .error
|
|
|
|
mov eax, [eax + SOCKET.Number]
|
|
|
|
DEBUGF 1,"num=%u\n", eax
|
|
ret
|
|
|
|
.error:
|
|
DEBUGF 1,"not found\n", eax
|
|
ret
|
|
|
|
|
|
;---------------------------------------------------
|
|
;
|
|
; SOCKET_check
|
|
;
|
|
; checks if the given value is really a socket ptr
|
|
;
|
|
; IN: eax = socket ptr
|
|
; OUT: eax = 0 on error, unchanged otherwise
|
|
; ZF = set on error
|
|
;
|
|
;---------------------------------------------------
|
|
align 4
|
|
SOCKET_check:
|
|
|
|
DEBUGF 1,"SOCKET_check: %x\n", eax
|
|
|
|
push ebx
|
|
mov ebx, net_sockets
|
|
|
|
.next_socket:
|
|
mov ebx, [ebx + SOCKET.NextPtr]
|
|
or ebx, ebx
|
|
jz .done
|
|
cmp ebx, eax
|
|
jnz .next_socket
|
|
|
|
.done:
|
|
mov eax, ebx
|
|
test eax, eax
|
|
pop ebx
|
|
|
|
ret
|
|
|
|
|
|
|
|
;---------------------------------------------------
|
|
;
|
|
; SOCKET_check_owner
|
|
;
|
|
; checks if the caller application owns the socket
|
|
;
|
|
; IN: eax = socket ptr
|
|
; OUT: ZF = true/false
|
|
;
|
|
;---------------------------------------------------
|
|
align 4
|
|
SOCKET_check_owner:
|
|
|
|
DEBUGF 1,"SOCKET_check_owner: %x\n", eax
|
|
|
|
push ebx
|
|
mov ebx, [TASK_BASE]
|
|
mov ebx, [ecx + TASKDATA.pid]
|
|
cmp [eax + SOCKET.PID], ebx
|
|
pop ebx
|
|
|
|
ret
|
|
|
|
|
|
|
|
|
|
;------------------------------------------------------
|
|
;
|
|
; SOCKET_process_end
|
|
;
|
|
; Kernel calls this function when a certain process ends
|
|
; This function will check if the process had any open sockets
|
|
; And update them accordingly
|
|
;
|
|
; IN: edx = pid
|
|
; OUT: /
|
|
;
|
|
;------------------------------------------------------
|
|
align 4
|
|
SOCKET_process_end:
|
|
|
|
DEBUGF 1,"SOCKET_process_end: %x\n", edx
|
|
|
|
push ebx
|
|
mov ebx, net_sockets
|
|
|
|
.next_socket:
|
|
mov ebx, [ebx + SOCKET.NextPtr]
|
|
.test_socket:
|
|
test ebx, ebx
|
|
jz .done
|
|
|
|
cmp [ebx + SOCKET.PID], edx
|
|
jne .next_socket
|
|
|
|
DEBUGF 1,"SOCKET_process_end: killing socket %x\n", ebx
|
|
|
|
mov [ebx + SOCKET.PID], 0
|
|
|
|
cmp [ebx + SOCKET.Protocol], IP_PROTO_TCP
|
|
je .tcp
|
|
|
|
; The socket is stateless, just kill it right away!
|
|
|
|
mov eax, ebx
|
|
mov ebx, [ebx + SOCKET.NextPtr]
|
|
call SOCKET_free
|
|
jmp .test_socket
|
|
|
|
.tcp:
|
|
push [ebx + SOCKET.NextPtr]
|
|
mov eax, ebx
|
|
call TCP_disconnect
|
|
pop ebx
|
|
jmp .test_socket
|
|
|
|
.done:
|
|
pop ebx
|
|
|
|
ret
|
|
|
|
|
|
|
|
|
|
;-----------------------------------------------------------------
|
|
;
|
|
; SOCKET_is_connecting
|
|
;
|
|
; IN: eax = socket ptr
|
|
; OUT: /
|
|
;
|
|
;-----------------------------------------------------------------
|
|
|
|
align 4
|
|
SOCKET_is_connecting:
|
|
|
|
DEBUGF 1,"SOCKET_is_connecting: %x\n", eax
|
|
|
|
and [eax + SOCKET.options], not (SS_ISCONNECTED + SS_ISDISCONNECTING + SS_ISCONFIRMING)
|
|
or [eax + SOCKET.options], SS_ISCONNECTING
|
|
|
|
jmp SOCKET_notify_owner
|
|
|
|
|
|
|
|
;-----------------------------------------------------------------
|
|
;
|
|
; SOCKET_is_connected
|
|
;
|
|
; IN: eax = socket ptr
|
|
; OUT: /
|
|
;
|
|
;-----------------------------------------------------------------
|
|
|
|
align 4
|
|
SOCKET_is_connected:
|
|
|
|
DEBUGF 1,"SOCKET_is_connected: %x\n", eax
|
|
|
|
and [eax + SOCKET.options], not (SS_ISCONNECTING + SS_ISDISCONNECTING + SS_ISCONFIRMING)
|
|
or [eax + SOCKET.options], SS_ISCONNECTED
|
|
|
|
jmp SOCKET_notify_owner
|
|
|
|
|
|
|
|
|
|
;-----------------------------------------------------------------
|
|
;
|
|
; SOCKET_is_disconnecting
|
|
;
|
|
; IN: eax = socket ptr
|
|
; OUT: /
|
|
;
|
|
;-----------------------------------------------------------------
|
|
|
|
align 4
|
|
SOCKET_is_disconnecting:
|
|
|
|
DEBUGF 1,"SOCKET_is_disconnecting: %x\n", eax
|
|
|
|
and [eax + SOCKET.options], not (SS_ISCONNECTING)
|
|
or [eax + SOCKET.options], SS_ISDISCONNECTING + SS_CANTRCVMORE + SS_CANTSENDMORE
|
|
|
|
jmp SOCKET_notify_owner
|
|
|
|
|
|
|
|
;-----------------------------------------------------------------
|
|
;
|
|
; SOCKET_is_disconnected
|
|
;
|
|
; IN: eax = socket ptr
|
|
; OUT: /
|
|
;
|
|
;-----------------------------------------------------------------
|
|
|
|
align 4
|
|
SOCKET_is_disconnected:
|
|
|
|
DEBUGF 1,"SOCKET_is_disconnected: %x\n", eax
|
|
|
|
and [eax + SOCKET.options], not (SS_ISCONNECTING + SS_ISCONNECTED + SS_ISDISCONNECTING)
|
|
or [eax + SOCKET.options], SS_CANTRCVMORE + SS_CANTSENDMORE
|
|
|
|
jmp SOCKET_notify_owner
|
|
|
|
|
|
;-----------------------------------------------------------------
|
|
;
|
|
; SOCKET_cant_recv_more
|
|
;
|
|
; IN: eax = socket ptr
|
|
; OUT: /
|
|
;
|
|
;-----------------------------------------------------------------
|
|
|
|
align 4
|
|
SOCKET_cant_recv_more:
|
|
|
|
DEBUGF 1,"SOCKET_cant_recv_more: %x\n", eax
|
|
|
|
or [eax + SOCKET.options], SS_CANTRCVMORE
|
|
|
|
ret
|
|
|
|
|
|
|
|
;-----------------------------------------------------------------
|
|
;
|
|
; SOCKET_cant_send_more
|
|
;
|
|
; IN: eax = socket ptr
|
|
; OUT: /
|
|
;
|
|
;-----------------------------------------------------------------
|
|
|
|
align 4
|
|
SOCKET_cant_send_more:
|
|
|
|
DEBUGF 1,"SOCKET_cant_send_more: %x\n", eax
|
|
|
|
or [eax + SOCKET.options], SS_CANTSENDMORE
|
|
|
|
ret |