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431 | serge | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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3 | ;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;; |
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4 | ;; Distributed under terms of the GNU General Public License ;; |
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5 | ;; ;; |
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6 | ;; SOCKET.INC ;; |
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7 | ;; ;; |
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8 | ;; Sockets constants, structures and functions ;; |
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9 | ;; ;; |
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10 | ;; Last revision: 11.11.2006 ;; |
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11 | ;; ;; |
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12 | ;; This file contains the following: ;; |
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13 | ;; is_localport_unused ;; |
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14 | ;; get_free_socket ;; |
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15 | ;; socket_open ;; |
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16 | ;; socket_open_tcp ;; |
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17 | ;; socket_close ;; |
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18 | ;; socket_close_tcp ;; |
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19 | ;; socket_poll ;; |
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20 | ;; socket_status ;; |
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21 | ;; socket_read ;; |
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22 | ;; socket_write ;; |
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23 | ;; socket_write_tcp ;; |
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24 | ;; ;; |
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25 | ;; ;; |
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26 | ;; Changes history: ;; |
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27 | ;; 22.09.2003 - [Mike Hibbett] : mikeh@oceanfree.net ;; |
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28 | ;; 11.11.2006 - [Johnny_B] and [smb] ;; |
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29 | ;; ;; |
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30 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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261 | hidnplayr | 31 | |
593 | mikedld | 32 | $Revision: 907 $ |
33 | |||
34 | |||
261 | hidnplayr | 35 | ; |
36 | ; Socket Descriptor + Buffer |
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37 | ; |
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38 | ; 0 1 2 3 |
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39 | ; 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
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40 | ; |
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41 | ; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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42 | ; 0| Status ( of this buffer ) | |
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43 | ; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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44 | ; 4| Application Process ID | |
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45 | ; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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46 | ; 8| Local IP Address | |
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47 | ; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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48 | ; 12| Local IP Port | Unused ( set to 0 ) | |
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49 | ; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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50 | ; 16| Remote IP Address | |
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51 | ; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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52 | ; 20| Remote IP Port | Unused ( set to 0 ) | |
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53 | ; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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54 | ; 24| Rx Data Count INTEL format| |
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55 | ; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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56 | ; 28| TCB STATE INTEL format| |
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57 | ; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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58 | ; 32| TCB Timer (seconds) INTEL format| |
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59 | ; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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60 | ; 36| ISS (Inital Sequence # used by this connection ) INET format| |
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61 | ; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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62 | ; 40| IRS ( Inital Receive Sequence # ) INET format| |
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63 | ; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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64 | ; 44| SND.UNA Seq # of unack'ed sent packets INET format| |
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65 | ; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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66 | ; 48| SND.NXT Next send seq # to use INET format| |
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67 | ; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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68 | ; 52| SND.WND Send window INET format| |
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69 | ; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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70 | ; 56| RCV.NXT Next expected receive sequence # INET format| |
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71 | ; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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72 | ; 60| RCV.WND Receive window INET format| |
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73 | ; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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74 | ; 64| SEG.LEN Segment length INTEL format| |
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75 | ; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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76 | ; 68| SEG.WND Segment window INTEL format| |
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77 | ; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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78 | ; 72| Retransmit queue # NOW WINDOW SIZE TIMER INTEL format| |
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79 | ; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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907 | mikedld | 80 | ; 76| RX Data Buffer | |
261 | hidnplayr | 81 | ; +-+-+-.......... -+ |
82 | |||
83 | |||
84 | ; so, define struct |
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85 | struc SOCKET |
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907 | mikedld | 86 | { |
87 | .Status dd ? ;+00 - Status ( of this buffer ) |
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379 | serge | 88 | .PID dd ? ;+04 - Application Process ID |
907 | mikedld | 89 | .LocalIP dd ? ;+08 - Local IP Address |
323 | hidnplayr | 90 | .LocalPort dw ? ;+12 - Local Port |
91 | .RemoteIP dd ? ;+16 - Remote IP Address |
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92 | .RemotePort dw ? ;+20 - Remote Port |
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907 | mikedld | 93 | .OrigRemoteIP dd ? |
94 | .OrigRemotePort dw ? |
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323 | hidnplayr | 95 | .rxDataCount dd ? ;+24 - Rx Data Count |
96 | .TCBState dd ? ;+28 - TCB STATE |
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379 | serge | 97 | .TCBTimer dd ? ;+32 - TCB Timer (seconds) |
323 | hidnplayr | 98 | .ISS dd ? ;+36 - Initial Send Sequence |
99 | .IRS dd ? ;+40 - Initial Receive Sequence |
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100 | .SND_UNA dd ? ;+44 - Sequence number of unack'ed sent packets |
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379 | serge | 101 | .SND_NXT dd ? ;+48 - Next send sequence number to use |
323 | hidnplayr | 102 | .SND_WND dd ? ;+52 - Send window |
103 | .RCV_NXT dd ? ;+56 - Next receive sequence number to use |
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104 | .RCV_WND dd ? ;+60 - Receive window |
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105 | .SEG_LEN dd ? ;+64 - Segment length |
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106 | .SEG_WND dd ? ;+68 - Segment window |
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379 | serge | 107 | .wndsizeTimer dd ? ;+72 - Retransmit queue # NOW WINDOW SIZE TIMER |
907 | mikedld | 108 | .PrevPtr dd ? |
109 | .NextPtr dd ? |
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323 | hidnplayr | 110 | .rxData dd ? ;+76 - receive data buffer here |
261 | hidnplayr | 111 | } |
112 | |||
113 | virtual at 0 |
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114 | SOCKET SOCKET |
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115 | end virtual |
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116 | |||
379 | serge | 117 | ; simple macro calcing real memory address of SOCKET struct by socket's |
907 | mikedld | 118 | ;macro Index2RealAddr reg |
119 | ;{ |
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120 | ; shl reg, 12 |
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121 | ; add reg, sockets |
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122 | ;} |
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261 | hidnplayr | 123 | |
124 | ;Constants |
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125 | ; current socket statuses |
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907 | mikedld | 126 | SOCK_EMPTY = 0 ; socket not in use |
127 | SOCK_OPEN = 1 ; open issued, but no data sent |
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261 | hidnplayr | 128 | |
129 | ; TCP opening modes |
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323 | hidnplayr | 130 | SOCKET_PASSIVE equ 0 |
131 | SOCKET_ACTIVE equ 1 |
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261 | hidnplayr | 132 | |
907 | mikedld | 133 | proc net_socket_alloc stdcall uses ebx ecx edx edi |
134 | stdcall kernel_alloc, SOCKETBUFFSIZE |
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135 | DEBUGF 1, "K : net_socket_alloc (0x%x)\n", eax |
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136 | or eax, eax |
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137 | jz .exit |
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138 | |||
139 | push eax |
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140 | mov edi, eax |
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141 | mov ecx, SOCKETBUFFSIZE / 4 |
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142 | cld |
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143 | xor eax, eax |
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144 | rep stosd |
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145 | pop eax |
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146 | |||
147 | mov ebx, net_sockets |
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148 | push [ebx + SOCKET.NextPtr] |
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149 | mov [ebx + SOCKET.NextPtr], eax |
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150 | mov [eax + SOCKET.PrevPtr], ebx |
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151 | pop ebx |
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152 | mov [eax + SOCKET.NextPtr], ebx |
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153 | or ebx, ebx |
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154 | jz @f |
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155 | mov [ebx + SOCKET.PrevPtr], eax |
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156 | |||
157 | @@: mov ebx, [TASK_BASE] |
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158 | mov ebx, [ebx + TASKDATA.pid] |
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159 | mov [eax + SOCKET.PID], ebx |
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160 | |||
161 | .exit: |
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162 | ret |
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163 | endp |
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164 | |||
165 | proc net_socket_free stdcall uses ebx ecx edx, sock:DWORD |
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166 | mov eax, [sock] |
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167 | DEBUGF 1, "K : net_socket_free (0x%x)\n", eax |
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168 | or eax, eax |
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169 | jz .error |
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170 | |||
171 | mov ebx, net_sockets |
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172 | mov ecx, [TASK_BASE] |
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173 | mov ecx, [ecx + TASKDATA.pid] |
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174 | .next_socket: |
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175 | mov ebx, [ebx + SOCKET.NextPtr] |
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176 | or ebx, ebx |
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177 | jz .error |
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178 | cmp ebx, eax |
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179 | jne .next_socket |
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180 | ;cmp [ebx + SOCKET.PID], ecx |
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181 | ;jne .next_socket |
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182 | |||
183 | mov ebx, [eax + SOCKET.NextPtr] |
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184 | mov eax, [eax + SOCKET.PrevPtr] |
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185 | mov [eax + SOCKET.NextPtr], ebx |
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186 | or ebx, ebx |
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187 | jz @f |
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188 | mov [ebx + SOCKET.PrevPtr], eax |
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189 | |||
190 | @@: stdcall kernel_free, [sock] |
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191 | ret |
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192 | |||
193 | .error: |
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194 | DEBUGF 1, "K : failed\n" |
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195 | ret |
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196 | endp |
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197 | |||
198 | proc net_socket_num_to_addr stdcall uses ebx ecx, x:DWORD |
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199 | ; FIXME: do real transform |
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200 | mov eax, [x] |
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201 | mov ebx, net_sockets |
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202 | mov ecx, [TASK_BASE] |
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203 | mov ecx, [ecx + TASKDATA.pid] |
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204 | .next_socket: |
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205 | mov ebx, [ebx + SOCKET.NextPtr] |
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206 | or ebx, ebx |
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207 | jz .error |
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208 | cmp ebx, eax |
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209 | jne .next_socket |
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210 | ;cmp [ebx + SOCKET.PID], ecx |
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211 | ;jne .next_socket |
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212 | ret |
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213 | |||
214 | .error: |
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215 | xor eax, eax |
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216 | ret |
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217 | endp |
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218 | |||
219 | proc net_socket_addr_to_num stdcall uses ebx ecx, x:DWORD |
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220 | ; FIXME: do real transform |
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221 | mov eax, [x] |
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222 | mov ebx, net_sockets |
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223 | mov ecx, [TASK_BASE] |
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224 | mov ecx, [ecx + TASKDATA.pid] |
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225 | .next_socket: |
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226 | mov ebx, [ebx + SOCKET.NextPtr] |
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227 | or ebx, ebx |
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228 | jz .error |
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229 | cmp ebx, eax |
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230 | jne .next_socket |
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231 | ;cmp [ebx + SOCKET.PID], ecx |
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232 | ;jne .next_socket |
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233 | ret |
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234 | |||
235 | .error: |
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236 | xor eax, eax |
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237 | ret |
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238 | endp |
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239 | |||
261 | hidnplayr | 240 | ;*************************************************************************** |
241 | ; Function |
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242 | ; is_localport_unused |
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243 | ; |
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244 | ; Description |
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245 | ; scans through all the active sockets , looking to see if the |
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246 | ; port number specified in bx is in use as a localport number. |
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247 | ; This is useful when you want a to generate a unique local port |
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248 | ; number. |
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249 | ; On return, eax = 1 for free, 0 for in use |
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250 | ; |
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251 | ;*************************************************************************** |
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907 | mikedld | 252 | proc is_localport_unused stdcall |
261 | hidnplayr | 253 | |
907 | mikedld | 254 | xchg bl, bh |
261 | hidnplayr | 255 | |
907 | mikedld | 256 | xor eax, eax ; Assume the return value is 'free' |
257 | inc al |
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258 | mov edx, net_sockets |
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261 | hidnplayr | 259 | |
907 | mikedld | 260 | .next_socket: |
261 | mov edx, [edx + SOCKET.NextPtr] |
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262 | or edx, edx |
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263 | jz .exit |
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264 | cmp [edx + SOCKET.LocalPort], bx |
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265 | jne .next_socket ; Return back if the port is not occupied |
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261 | hidnplayr | 266 | |
907 | mikedld | 267 | dec al ; return 'in use' |
261 | hidnplayr | 268 | |
907 | mikedld | 269 | .exit: |
270 | ret |
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271 | endp |
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261 | hidnplayr | 272 | |
273 | |||
274 | ;*************************************************************************** |
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275 | ; Function |
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276 | ; socket_open |
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277 | ; |
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278 | ; Description |
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279 | ; find a free socket |
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280 | ; local port in ebx |
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281 | ; remote port in ecx |
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282 | ; remote ip in edx |
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283 | ; return socket # in eax, -1 if none available |
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284 | ; |
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285 | ;*************************************************************************** |
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907 | mikedld | 286 | proc socket_open stdcall |
287 | call net_socket_alloc |
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288 | or eax, eax |
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289 | jz .error |
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261 | hidnplayr | 290 | |
907 | mikedld | 291 | DEBUGF 1, "K : socket_open (0x%x)\n", eax |
261 | hidnplayr | 292 | |
907 | mikedld | 293 | push eax |
261 | hidnplayr | 294 | |
907 | mikedld | 295 | mov [eax + SOCKET.Status], SOCK_OPEN |
296 | xchg bh, bl |
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297 | mov [eax + SOCKET.LocalPort], bx |
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298 | xchg ch, cl |
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299 | mov [eax + SOCKET.RemotePort], cx |
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300 | mov ebx, [stack_ip] |
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301 | mov [eax + SOCKET.LocalIP], ebx |
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302 | mov [eax + SOCKET.RemoteIP], edx |
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261 | hidnplayr | 303 | |
907 | mikedld | 304 | ;pop eax ; Get the socket number back, so we can return it |
305 | stdcall net_socket_addr_to_num |
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306 | ret |
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261 | hidnplayr | 307 | |
907 | mikedld | 308 | .error: |
309 | DEBUGF 1, "K : socket_open (fail)\n" |
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310 | or eax, -1 |
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311 | ret |
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312 | endp |
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261 | hidnplayr | 313 | |
314 | |||
315 | ;*************************************************************************** |
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316 | ; Function |
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317 | ; socket_open_tcp |
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318 | ; |
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319 | ; Description |
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320 | ; Opens a TCP socket in PASSIVE or ACTIVE mode |
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321 | ; find a free socket |
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322 | ; local port in ebx ( intel format ) |
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323 | ; remote port in ecx ( intel format ) |
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324 | ; remote ip in edx ( in Internet byte order ) |
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325 | ; Socket open mode in esi ( SOCKET_PASSIVE or SOCKET_ACTIVE ) |
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326 | ; return socket # in eax, -1 if none available |
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327 | ; |
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328 | ;*************************************************************************** |
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907 | mikedld | 329 | proc socket_open_tcp stdcall |
330 | local sockAddr dd ? |
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261 | hidnplayr | 331 | |
907 | mikedld | 332 | cmp esi, SOCKET_PASSIVE |
333 | jne .skip_port_check |
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261 | hidnplayr | 334 | |
907 | mikedld | 335 | push ebx |
336 | mov eax, ebx |
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337 | xchg al, ah |
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338 | mov ebx, net_sockets |
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261 | hidnplayr | 339 | |
907 | mikedld | 340 | .next_socket: |
341 | mov ebx, [ebx + SOCKET.NextPtr] |
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342 | or ebx, ebx |
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343 | jz .last_socket |
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344 | cmp [ebx + SOCKET.TCBState], TCB_LISTEN |
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345 | jne .next_socket |
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346 | cmp [ebx + SOCKET.LocalPort], ax |
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347 | jne .next_socket |
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261 | hidnplayr | 348 | |
907 | mikedld | 349 | xchg al, ah |
350 | DEBUGF 1, "K : error: port %u is listened by 0x%x\n", ax, ebx |
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351 | pop ebx |
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352 | jmp .error |
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261 | hidnplayr | 353 | |
907 | mikedld | 354 | .last_socket: |
355 | pop ebx |
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261 | hidnplayr | 356 | |
907 | mikedld | 357 | .skip_port_check: |
358 | call net_socket_alloc |
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359 | or eax, eax |
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360 | jz .error |
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261 | hidnplayr | 361 | |
907 | mikedld | 362 | DEBUGF 1, "K : socket_open_tcp (0x%x)\n", eax |
261 | hidnplayr | 363 | |
907 | mikedld | 364 | mov [sockAddr], eax |
261 | hidnplayr | 365 | |
907 | mikedld | 366 | ; TODO - check this works! |
367 | ;xxx: already 0 (intialized by net_socket_alloc) |
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368 | ;mov [eax + SOCKET.wndsizeTimer], 0 ; Reset the window timer. |
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261 | hidnplayr | 369 | |
907 | mikedld | 370 | xchg bh, bl |
371 | mov [eax + SOCKET.LocalPort], bx |
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372 | xchg ch, cl |
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373 | mov [eax + SOCKET.RemotePort], cx |
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374 | mov [eax + SOCKET.OrigRemotePort], cx |
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375 | mov ebx, [stack_ip] |
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376 | mov [eax + SOCKET.LocalIP], ebx |
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377 | mov [eax + SOCKET.RemoteIP], edx |
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378 | mov [eax + SOCKET.OrigRemoteIP], edx |
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261 | hidnplayr | 379 | |
907 | mikedld | 380 | mov ebx, TCB_LISTEN |
381 | cmp esi, SOCKET_PASSIVE |
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382 | je @f |
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383 | mov ebx, TCB_SYN_SENT |
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384 | @@: mov [eax + SOCKET.TCBState], ebx ; Indicate the state of the TCB |
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261 | hidnplayr | 385 | |
907 | mikedld | 386 | cmp ebx, TCB_LISTEN |
387 | je .exit |
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261 | hidnplayr | 388 | |
907 | mikedld | 389 | ; Now, if we are in active mode, then we have to send a SYN to the specified remote port |
390 | mov eax, EMPTY_QUEUE |
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391 | call dequeue |
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392 | cmp ax, NO_BUFFER |
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393 | je .exit |
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261 | hidnplayr | 394 | |
907 | mikedld | 395 | push eax |
261 | hidnplayr | 396 | |
907 | mikedld | 397 | mov bl, TH_SYN |
398 | xor ecx, ecx |
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399 | stdcall build_tcp_packet, [sockAddr] |
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261 | hidnplayr | 400 | |
907 | mikedld | 401 | mov eax, NET1OUT_QUEUE |
402 | mov edx, [stack_ip] |
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403 | mov ecx, [sockAddr] |
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404 | cmp edx, [ecx + SOCKET.RemoteIP] |
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405 | jne .not_local |
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406 | mov eax, IPIN_QUEUE |
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261 | hidnplayr | 407 | |
907 | mikedld | 408 | .not_local: |
409 | ; Send it. |
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410 | pop ebx |
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411 | call queue |
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261 | hidnplayr | 412 | |
907 | mikedld | 413 | mov esi, [sockAddr] |
261 | hidnplayr | 414 | |
907 | mikedld | 415 | ; increment SND.NXT in socket |
416 | add esi, SOCKET.SND_NXT |
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417 | call inc_inet_esi |
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261 | hidnplayr | 418 | |
907 | mikedld | 419 | .exit: |
420 | mov ebx, [sockAddr] |
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421 | mov [ebx + SOCKET.Status], SOCK_OPEN |
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422 | ;pop eax ; Get the socket number back, so we can return it |
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423 | stdcall net_socket_addr_to_num, ebx |
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424 | ret |
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261 | hidnplayr | 425 | |
907 | mikedld | 426 | .error: |
427 | DEBUGF 1, "K : socket_open_tcp (fail)\n" |
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428 | or eax, -1 |
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429 | ret |
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430 | endp |
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261 | hidnplayr | 431 | |
432 | |||
433 | ;*************************************************************************** |
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434 | ; Function |
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435 | ; socket_close |
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436 | ; |
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437 | ; Description |
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438 | ; socket # in ebx |
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439 | ; returns 0 for ok, -1 for socket not open (fail) |
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440 | ; |
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441 | ;*************************************************************************** |
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907 | mikedld | 442 | proc socket_close stdcall |
443 | DEBUGF 1, "K : socket_close (0x%x)\n", ebx |
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444 | stdcall net_socket_num_to_addr, ebx |
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445 | or eax, eax |
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446 | jz .error |
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261 | hidnplayr | 447 | |
907 | mikedld | 448 | cmp [eax + SOCKET.Status], dword SOCK_EMPTY |
449 | jz .error |
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261 | hidnplayr | 450 | |
907 | mikedld | 451 | ; Clear the socket varaibles |
452 | stdcall net_socket_free, eax |
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453 | ; mov edi, eax |
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454 | ; xor eax, eax |
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455 | ; mov ecx, SOCKETHEADERSIZE |
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456 | ; cld |
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457 | ; rep stosb |
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261 | hidnplayr | 458 | |
907 | mikedld | 459 | xor eax, eax |
460 | ret |
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261 | hidnplayr | 461 | |
907 | mikedld | 462 | .error: |
463 | DEBUGF 1, "K : socket_close (fail)\n" |
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464 | or eax, -1 |
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465 | ret |
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466 | endp |
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261 | hidnplayr | 467 | |
907 | mikedld | 468 | |
261 | hidnplayr | 469 | ;*************************************************************************** |
470 | ; Function |
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471 | ; socket_close_tcp |
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472 | ; |
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473 | ; Description |
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474 | ; socket # in ebx |
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475 | ; returns 0 for ok, -1 for socket not open (fail) |
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476 | ; |
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477 | ;*************************************************************************** |
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907 | mikedld | 478 | proc socket_close_tcp stdcall |
479 | local sockAddr dd ? |
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480 | DEBUGF 1, "K : socket_close_tcp (0x%x)\n", ebx |
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481 | ; first, remove any resend entries |
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482 | pusha |
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261 | hidnplayr | 483 | |
907 | mikedld | 484 | mov esi, resendQ |
485 | mov ecx, 0 |
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261 | hidnplayr | 486 | |
907 | mikedld | 487 | .next_resendq: |
488 | cmp ecx, NUMRESENDENTRIES |
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489 | je .last_resendq ; None left |
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490 | ;cmp [esi], bl ; XTODO: bl -> ebx |
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491 | cmp [esi + 4], ebx |
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492 | je @f ; found one |
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493 | inc ecx |
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494 | add esi, 8 |
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495 | jmp .next_resendq |
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261 | hidnplayr | 496 | |
907 | mikedld | 497 | ;@@: mov byte[esi], 0xff ; XTODO: 0xff -> 0 |
498 | @@: mov dword[esi + 4], 0 |
||
499 | inc ecx |
||
500 | add esi, 8 |
||
501 | jmp .next_resendq |
||
261 | hidnplayr | 502 | |
907 | mikedld | 503 | .last_resendq: |
504 | popa |
||
261 | hidnplayr | 505 | |
907 | mikedld | 506 | stdcall net_socket_num_to_addr, ebx |
507 | or eax, eax |
||
508 | jz .error |
||
261 | hidnplayr | 509 | |
907 | mikedld | 510 | mov ebx, eax |
511 | mov [sockAddr], eax |
||
512 | cmp [ebx + SOCKET.Status], SOCK_EMPTY |
||
513 | je .error |
||
261 | hidnplayr | 514 | |
907 | mikedld | 515 | cmp [ebx + SOCKET.TCBState], TCB_LISTEN ;xxx |
516 | je .destroy_tcb ;xxx |
||
517 | cmp [ebx + SOCKET.TCBState], TCB_SYN_SENT ;xxx |
||
518 | je .destroy_tcb ;xxx |
||
261 | hidnplayr | 519 | |
907 | mikedld | 520 | ; Now construct the response, and queue for sending by IP |
521 | mov eax, EMPTY_QUEUE |
||
522 | call dequeue |
||
523 | cmp ax, NO_BUFFER |
||
524 | je .error |
||
261 | hidnplayr | 525 | |
907 | mikedld | 526 | push eax |
261 | hidnplayr | 527 | |
907 | mikedld | 528 | ;xxx mov bl, TH_FIN + TH_ACK |
529 | mov bl, TH_FIN ;xxx |
||
530 | xor ecx, ecx |
||
531 | xor esi, esi |
||
532 | stdcall build_tcp_packet, [sockAddr] |
||
261 | hidnplayr | 533 | |
907 | mikedld | 534 | mov ebx, [sockAddr] |
535 | ; increament SND.NXT in socket |
||
536 | lea esi, [ebx + SOCKET.SND_NXT] |
||
537 | call inc_inet_esi |
||
261 | hidnplayr | 538 | |
907 | mikedld | 539 | ; Get the socket state |
540 | mov eax, [ebx + SOCKET.TCBState] |
||
541 | ;xxx cmp eax, TCB_LISTEN |
||
542 | ;xxx je .destroy_tcb |
||
543 | ;xxx cmp eax, TCB_SYN_SENT |
||
544 | ;xxx je .destroy_tcb |
||
545 | cmp eax, TCB_SYN_RECEIVED |
||
546 | je .fin_wait_1 |
||
547 | cmp eax, TCB_ESTABLISHED |
||
548 | je .fin_wait_1 |
||
261 | hidnplayr | 549 | |
907 | mikedld | 550 | ; assume CLOSE WAIT |
551 | ; Send a fin, then enter last-ack state |
||
552 | ; TODO: check if it's really a TCB_CLOSE_WAIT |
||
553 | mov [ebx + SOCKET.TCBState], TCB_LAST_ACK |
||
554 | jmp .send |
||
261 | hidnplayr | 555 | |
907 | mikedld | 556 | .fin_wait_1: |
557 | ; Send a fin, then enter finwait2 state |
||
558 | mov [ebx + SOCKET.TCBState], TCB_FIN_WAIT_1 |
||
261 | hidnplayr | 559 | |
907 | mikedld | 560 | .send: |
561 | mov eax, NET1OUT_QUEUE |
||
562 | mov edx, [stack_ip] |
||
563 | mov ecx, [sockAddr] |
||
564 | cmp edx, [ecx + SOCKET.RemoteIP] |
||
565 | jne .not_local |
||
566 | mov eax, IPIN_QUEUE |
||
261 | hidnplayr | 567 | |
907 | mikedld | 568 | .not_local: |
569 | ; Send it. |
||
570 | pop ebx |
||
571 | call queue |
||
572 | jmp .exit |
||
261 | hidnplayr | 573 | |
907 | mikedld | 574 | .destroy_tcb: |
575 | ;xxx pop eax |
||
261 | hidnplayr | 576 | |
907 | mikedld | 577 | ; Clear the socket variables |
578 | ;xxx stdcall net_socket_free, [sockAddr] |
||
579 | stdcall net_socket_free, ebx |
||
261 | hidnplayr | 580 | |
907 | mikedld | 581 | .exit: |
582 | xor eax, eax |
||
583 | ret |
||
261 | hidnplayr | 584 | |
907 | mikedld | 585 | .error: |
586 | DEBUGF 1, "K : socket_close_tcp (fail)\n" |
||
587 | or eax, -1 |
||
588 | ret |
||
589 | endp |
||
261 | hidnplayr | 590 | |
591 | |||
592 | ;*************************************************************************** |
||
593 | ; Function |
||
594 | ; socket_poll |
||
595 | ; |
||
596 | ; Description |
||
597 | ; socket # in ebx |
||
598 | ; returns count in eax. |
||
599 | ; |
||
600 | ;*************************************************************************** |
||
907 | mikedld | 601 | proc socket_poll stdcall |
602 | ; DEBUGF 1, "socket_poll(0x%x)\n", ebx |
||
603 | stdcall net_socket_num_to_addr, ebx |
||
604 | or eax, eax |
||
605 | jz .error |
||
261 | hidnplayr | 606 | |
907 | mikedld | 607 | mov eax, [eax + SOCKET.rxDataCount] |
608 | ret |
||
261 | hidnplayr | 609 | |
907 | mikedld | 610 | .error: |
611 | ;or eax, -1 |
||
612 | xor eax, eax |
||
613 | ret |
||
614 | endp |
||
261 | hidnplayr | 615 | |
616 | |||
617 | ;*************************************************************************** |
||
618 | ; Function |
||
619 | ; socket_status |
||
620 | ; |
||
621 | ; Description |
||
622 | ; socket # in ebx |
||
623 | ; returns TCB state in eax. |
||
624 | ; |
||
625 | ;*************************************************************************** |
||
907 | mikedld | 626 | proc socket_status stdcall |
627 | ;; DEBUGF 1, "socket_status(0x%x)\n", ebx |
||
628 | stdcall net_socket_num_to_addr, ebx |
||
629 | or eax, eax |
||
630 | jz .error |
||
261 | hidnplayr | 631 | |
907 | mikedld | 632 | mov eax, [eax + SOCKET.TCBState] |
633 | ret |
||
261 | hidnplayr | 634 | |
907 | mikedld | 635 | .error: |
636 | ;or eax, -1 |
||
637 | xor eax, eax |
||
638 | ret |
||
639 | endp |
||
261 | hidnplayr | 640 | |
907 | mikedld | 641 | ; Index2RealAddr ebx |
642 | ; mov eax, [ebx + SOCKET.TCBState] |
||
643 | ; |
||
644 | ; ret |
||
261 | hidnplayr | 645 | |
907 | mikedld | 646 | |
261 | hidnplayr | 647 | ;*************************************************************************** |
648 | ; Function |
||
649 | ; socket_read |
||
650 | ; |
||
651 | ; Description |
||
652 | ; socket # in ebx |
||
653 | ; returns # of bytes remaining in eax, data in bl |
||
654 | ; |
||
655 | ;*************************************************************************** |
||
907 | mikedld | 656 | proc socket_read stdcall |
657 | ; DEBUGF 1, "socket_read(0x%x)\n", ebx |
||
658 | stdcall net_socket_num_to_addr, ebx |
||
659 | or eax, eax |
||
660 | jz .error |
||
261 | hidnplayr | 661 | |
907 | mikedld | 662 | mov ebx, eax |
663 | mov eax, [ebx + SOCKET.rxDataCount] ; get count of bytes |
||
664 | test eax, eax |
||
665 | jz .error |
||
261 | hidnplayr | 666 | |
907 | mikedld | 667 | dec eax |
668 | mov esi, ebx ; esi is address of socket |
||
669 | mov [ebx + SOCKET.rxDataCount], eax ; store new count |
||
670 | ;movzx ebx, byte[ebx + SOCKET.rxData] ; get the byte |
||
671 | movzx ebx, byte[ebx + SOCKETHEADERSIZE] ; get the byte |
||
672 | add esi, SOCKETHEADERSIZE |
||
673 | mov edi, esi |
||
674 | inc esi |
||
261 | hidnplayr | 675 | |
907 | mikedld | 676 | mov ecx, (SOCKETBUFFSIZE - SOCKETHEADERSIZE) / 4 |
677 | lea edi, [ebx + SOCKETHEADERSIZE] |
||
678 | lea esi, [edi + 1] |
||
679 | cld |
||
680 | rep movsd |
||
261 | hidnplayr | 681 | |
907 | mikedld | 682 | ret |
261 | hidnplayr | 683 | |
907 | mikedld | 684 | .error: |
685 | ;or eax, -1 |
||
686 | xor eax, eax |
||
687 | xor ebx, ebx |
||
688 | ret |
||
689 | endp |
||
261 | hidnplayr | 690 | |
691 | |||
323 | hidnplayr | 692 | ;*************************************************************************** |
693 | ; Function |
||
694 | ; socket_read_packet |
||
695 | ; |
||
696 | ; Description |
||
697 | ; socket # in ebx |
||
698 | ; datapointer # in ecx |
||
699 | ; buffer size in edx |
||
700 | ; returns # of bytes copied in eax |
||
701 | ; |
||
702 | ;*************************************************************************** |
||
907 | mikedld | 703 | proc socket_read_packet stdcall |
704 | ; DEBUGF 1, "socket_read_packet(0x%x)\n", ebx |
||
705 | stdcall net_socket_num_to_addr, ebx ; get real socket address |
||
706 | or eax, eax |
||
707 | jz .error |
||
261 | hidnplayr | 708 | |
907 | mikedld | 709 | mov ebx, eax |
710 | mov eax, [ebx + SOCKET.rxDataCount] ; get count of bytes |
||
711 | test eax, eax ; if count of bytes is zero.. |
||
712 | jz .exit ; exit function (eax will be zero) |
||
323 | hidnplayr | 713 | |
907 | mikedld | 714 | test edx, edx ; if buffer size is zero, copy all data |
715 | jz .copy_all_bytes |
||
716 | cmp edx, eax ; if buffer size is larger then the bytes of data, copy all data |
||
717 | jge .copy_all_bytes |
||
323 | hidnplayr | 718 | |
907 | mikedld | 719 | sub eax, edx ; store new count (data bytes in buffer - bytes we're about to copy) |
720 | mov [ebx + SOCKET.rxDataCount], eax ; |
||
721 | push eax |
||
722 | mov eax, edx ; number of bytes we want to copy must be in eax |
||
723 | call .start_copy ; copy to the application |
||
323 | hidnplayr | 724 | |
907 | mikedld | 725 | mov esi, ebx ; now we're going to copy the remaining bytes to the beginning |
726 | add esi, SOCKETHEADERSIZE ; we dont need to copy the header |
||
727 | mov edi, esi ; edi is where we're going to copy to |
||
728 | add esi, edx ; esi is from where we copy |
||
729 | pop ecx ; count of bytes we have left |
||
730 | push ecx ; push it again so we can re-use it later |
||
731 | shr ecx, 2 ; divide eax by 4 |
||
732 | cld |
||
733 | rep movsd ; copy all full dwords |
||
734 | pop ecx |
||
735 | and ecx, 3 |
||
736 | rep movsb ; copy remaining bytes |
||
323 | hidnplayr | 737 | |
907 | mikedld | 738 | .exit: |
739 | ret ; at last, exit |
||
323 | hidnplayr | 740 | |
907 | mikedld | 741 | .error: |
742 | ;or eax, -1 |
||
743 | xor eax, eax |
||
744 | ret |
||
323 | hidnplayr | 745 | |
907 | mikedld | 746 | .copy_all_bytes: |
747 | xor esi, esi |
||
748 | mov [ebx + SOCKET.rxDataCount], esi ; store new count (zero) |
||
749 | call .start_copy |
||
750 | ret |
||
323 | hidnplayr | 751 | |
907 | mikedld | 752 | .start_copy: |
753 | mov edi, ecx |
||
754 | mov esi, ebx |
||
755 | add esi, SOCKETHEADERSIZE ; we dont need to copy the header |
||
756 | mov ecx, eax ; eax is count of bytes |
||
757 | push ecx |
||
758 | shr ecx, 2 ; divide eax by 4 |
||
759 | cld ; copy all full dwords |
||
760 | rep movsd |
||
761 | pop ecx |
||
762 | and ecx, 3 |
||
763 | rep movsb ; copy the rest bytes |
||
764 | retn ; exit, or go back to shift remaining bytes if any |
||
765 | endp |
||
323 | hidnplayr | 766 | |
767 | |||
261 | hidnplayr | 768 | ;*************************************************************************** |
769 | ; Function |
||
770 | ; socket_write |
||
771 | ; |
||
772 | ; Description |
||
773 | ; socket in ebx |
||
774 | ; # of bytes to write in ecx |
||
775 | ; pointer to data in edx |
||
776 | ; returns 0 in eax ok, -1 == failed ( invalid socket, or |
||
777 | ; could not queue IP packet ) |
||
778 | ; |
||
779 | ;*************************************************************************** |
||
907 | mikedld | 780 | proc socket_write stdcall |
781 | ; DEBUGF 1, "socket_write(0x%x)\n", ebx |
||
782 | stdcall net_socket_num_to_addr, ebx ; get real socket address |
||
783 | or eax, eax |
||
784 | jz .error |
||
261 | hidnplayr | 785 | |
907 | mikedld | 786 | mov ebx, eax |
261 | hidnplayr | 787 | |
907 | mikedld | 788 | ; If the socket is invalid, return with an error code |
789 | cmp [ebx + SOCKET.Status], SOCK_EMPTY |
||
790 | je .error |
||
261 | hidnplayr | 791 | |
907 | mikedld | 792 | mov eax, EMPTY_QUEUE |
793 | call dequeue |
||
794 | cmp ax, NO_BUFFER |
||
795 | je .error |
||
261 | hidnplayr | 796 | |
907 | mikedld | 797 | ; Save the queue entry number |
798 | push eax |
||
261 | hidnplayr | 799 | |
907 | mikedld | 800 | ; save the pointers to the data buffer & size |
801 | push edx |
||
802 | push ecx |
||
261 | hidnplayr | 803 | |
907 | mikedld | 804 | ; convert buffer pointer eax to the absolute address |
805 | mov ecx, IPBUFFSIZE |
||
806 | mul ecx |
||
807 | add eax, IPbuffs |
||
261 | hidnplayr | 808 | |
907 | mikedld | 809 | mov edx, eax |
261 | hidnplayr | 810 | |
907 | mikedld | 811 | ; So, ebx holds the socket ptr, edx holds the IPbuffer ptr |
261 | hidnplayr | 812 | |
907 | mikedld | 813 | ; Fill in the IP header (some data is in the socket descriptor) |
814 | mov eax, [ebx + SOCKET.LocalIP] |
||
815 | mov [edx + IP_PACKET.SourceAddress], eax |
||
816 | mov eax, [ebx + SOCKET.RemoteIP] |
||
817 | mov [edx + IP_PACKET.DestinationAddress], eax |
||
261 | hidnplayr | 818 | |
907 | mikedld | 819 | mov [edx + IP_PACKET.VersionAndIHL], 0x45 |
820 | mov [edx + IP_PACKET.TypeOfService], 0 |
||
261 | hidnplayr | 821 | |
907 | mikedld | 822 | pop eax ; Get the UDP data length |
823 | push eax |
||
261 | hidnplayr | 824 | |
907 | mikedld | 825 | add eax, 20 + 8 ; add IP header and UDP header lengths |
826 | xchg al, ah |
||
827 | mov [edx + IP_PACKET.TotalLength], ax |
||
828 | xor eax, eax |
||
829 | mov [edx + IP_PACKET.Identification], ax |
||
830 | mov [edx + IP_PACKET.FlagsAndFragmentOffset], 0x0040 |
||
831 | mov [edx + IP_PACKET.TimeToLive], 0x20 |
||
832 | mov [edx + IP_PACKET.Protocol], PROTOCOL_UDP |
||
261 | hidnplayr | 833 | |
907 | mikedld | 834 | ; Checksum left unfilled |
835 | mov [edx + IP_PACKET.HeaderChecksum], ax |
||
261 | hidnplayr | 836 | |
907 | mikedld | 837 | ; Fill in the UDP header (some data is in the socket descriptor) |
838 | mov ax, [ebx + SOCKET.LocalPort] |
||
839 | mov [edx + 20 + UDP_PACKET.SourcePort], ax |
||
261 | hidnplayr | 840 | |
907 | mikedld | 841 | mov ax, [ebx + SOCKET.RemotePort] |
842 | mov [edx + 20 + UDP_PACKET.DestinationPort], ax |
||
261 | hidnplayr | 843 | |
907 | mikedld | 844 | pop eax |
845 | push eax |
||
261 | hidnplayr | 846 | |
907 | mikedld | 847 | add eax, 8 |
848 | xchg al, ah |
||
849 | mov [edx + 20 + UDP_PACKET.Length], ax |
||
261 | hidnplayr | 850 | |
907 | mikedld | 851 | ; Checksum left unfilled |
852 | xor eax, eax |
||
853 | mov [edx + 20 + UDP_PACKET.Checksum], ax |
||
261 | hidnplayr | 854 | |
907 | mikedld | 855 | pop ecx ; count of bytes to send |
856 | mov ebx, ecx ; need the length later |
||
857 | pop eax ; get callers ptr to data to send |
||
261 | hidnplayr | 858 | |
907 | mikedld | 859 | ; Get the address of the callers data |
860 | mov edi, [TASK_BASE] |
||
861 | add edi, TASKDATA.mem_start |
||
862 | add eax, [edi] |
||
863 | mov esi, eax |
||
261 | hidnplayr | 864 | |
907 | mikedld | 865 | mov edi, edx |
866 | add edi, 28 |
||
867 | cld |
||
868 | rep movsb ; copy the data across |
||
261 | hidnplayr | 869 | |
907 | mikedld | 870 | ; we have edx as IPbuffer ptr. |
871 | ; Fill in the UDP checksum |
||
872 | ; First, fill in pseudoheader |
||
873 | mov eax, [edx + IP_PACKET.SourceAddress] |
||
874 | mov [pseudoHeader], eax |
||
875 | mov eax, [edx + IP_PACKET.DestinationAddress] |
||
876 | mov [pseudoHeader + 4], eax |
||
877 | mov word[pseudoHeader + 8], PROTOCOL_UDP shl 8 + 0 ; 0 + protocol |
||
878 | add ebx, 8 |
||
879 | mov eax, ebx |
||
880 | xchg al, ah |
||
881 | mov [pseudoHeader + 10], ax |
||
261 | hidnplayr | 882 | |
907 | mikedld | 883 | mov eax, pseudoHeader |
884 | mov [checkAdd1], eax |
||
885 | mov [checkSize1], word 12 |
||
886 | mov eax, edx |
||
887 | add eax, 20 |
||
888 | mov [checkAdd2], eax |
||
889 | mov eax, ebx |
||
890 | mov [checkSize2], ax ; was eax!! mjh 8/7/02 |
||
261 | hidnplayr | 891 | |
907 | mikedld | 892 | call checksum |
261 | hidnplayr | 893 | |
907 | mikedld | 894 | ; store it in the UDP checksum ( in the correct order! ) |
895 | mov ax, [checkResult] |
||
261 | hidnplayr | 896 | |
907 | mikedld | 897 | ; If the UDP checksum computes to 0, we must make it 0xffff |
898 | ; (0 is reserved for 'not used') |
||
899 | test ax, ax |
||
900 | jnz @f |
||
901 | mov ax, 0xffff |
||
261 | hidnplayr | 902 | |
907 | mikedld | 903 | @@: xchg al, ah |
904 | mov [edx + 20 + UDP_PACKET.Checksum], ax |
||
261 | hidnplayr | 905 | |
907 | mikedld | 906 | ; Fill in the IP header checksum |
907 | GET_IHL ecx,edx ; get IP-Header length |
||
908 | stdcall checksum_jb,edx,ecx ; buf_ptr, buf_size |
||
909 | xchg al, ah |
||
910 | mov [edx + IP_PACKET.HeaderChecksum], ax |
||
261 | hidnplayr | 911 | |
907 | mikedld | 912 | ; Check destination IP address. |
913 | ; If it is the local host IP, route it back to IP_RX |
||
261 | hidnplayr | 914 | |
907 | mikedld | 915 | pop ebx |
261 | hidnplayr | 916 | |
907 | mikedld | 917 | mov eax, NET1OUT_QUEUE |
918 | mov ecx, [edx + SOCKET.RemoteIP] |
||
919 | mov edx, [stack_ip] |
||
920 | cmp edx, ecx |
||
921 | jne .not_local |
||
922 | mov eax, IPIN_QUEUE |
||
261 | hidnplayr | 923 | |
907 | mikedld | 924 | .not_local: |
925 | ; Send it. |
||
926 | call queue |
||
261 | hidnplayr | 927 | |
907 | mikedld | 928 | xor eax, eax |
929 | ret |
||
261 | hidnplayr | 930 | |
907 | mikedld | 931 | .error: |
932 | or eax, -1 |
||
933 | ret |
||
934 | endp |
||
261 | hidnplayr | 935 | |
936 | |||
937 | ;*************************************************************************** |
||
938 | ; Function |
||
939 | ; socket_write_tcp |
||
940 | ; |
||
941 | ; Description |
||
942 | ; socket in ebx |
||
943 | ; # of bytes to write in ecx |
||
944 | ; pointer to data in edx |
||
945 | ; returns 0 in eax ok, -1 == failed ( invalid socket, or |
||
946 | ; could not queue IP packet ) |
||
947 | ; |
||
948 | ;*************************************************************************** |
||
907 | mikedld | 949 | proc socket_write_tcp stdcall |
950 | local sockAddr dd ? |
||
261 | hidnplayr | 951 | |
907 | mikedld | 952 | ; DEBUGF 1, "socket_write_tcp(0x%x)\n", ebx |
953 | stdcall net_socket_num_to_addr, ebx |
||
954 | or eax, eax |
||
955 | jz .error |
||
261 | hidnplayr | 956 | |
907 | mikedld | 957 | mov ebx, eax |
958 | mov [sockAddr], ebx |
||
261 | hidnplayr | 959 | |
907 | mikedld | 960 | ; If the socket is invalid, return with an error code |
961 | cmp [ebx + SOCKET.Status], SOCK_EMPTY |
||
962 | je .error |
||
261 | hidnplayr | 963 | |
907 | mikedld | 964 | ; If the sockets window timer is nonzero, do not queue packet |
965 | ; TODO - done |
||
966 | cmp [ebx + SOCKET.wndsizeTimer], 0 |
||
967 | jne .error |
||
261 | hidnplayr | 968 | |
907 | mikedld | 969 | mov eax, EMPTY_QUEUE |
970 | call dequeue |
||
971 | cmp ax, NO_BUFFER |
||
972 | je .error |
||
261 | hidnplayr | 973 | |
907 | mikedld | 974 | push eax |
261 | hidnplayr | 975 | |
907 | mikedld | 976 | ; Get the address of the callers data |
977 | mov edi, [TASK_BASE] |
||
978 | add edi, TASKDATA.mem_start |
||
979 | add edx, [edi] |
||
980 | mov esi, edx |
||
261 | hidnplayr | 981 | |
907 | mikedld | 982 | pop eax |
983 | push eax |
||
261 | hidnplayr | 984 | |
907 | mikedld | 985 | push ecx |
986 | mov bl, TH_ACK |
||
987 | stdcall build_tcp_packet, [sockAddr] |
||
988 | pop ecx |
||
261 | hidnplayr | 989 | |
907 | mikedld | 990 | ; Check destination IP address. |
991 | ; If it is the local host IP, route it back to IP_RX |
||
261 | hidnplayr | 992 | |
907 | mikedld | 993 | pop ebx |
994 | push ecx |
||
261 | hidnplayr | 995 | |
907 | mikedld | 996 | mov eax, NET1OUT_QUEUE |
997 | mov edx, [stack_ip] |
||
998 | mov ecx, [sockAddr] |
||
999 | cmp edx, [ecx + SOCKET.RemoteIP] |
||
1000 | jne .not_local |
||
1001 | mov eax, IPIN_QUEUE |
||
261 | hidnplayr | 1002 | |
907 | mikedld | 1003 | .not_local: |
1004 | pop ecx |
||
1005 | push ebx ; save ipbuffer number |
||
261 | hidnplayr | 1006 | |
907 | mikedld | 1007 | call queue |
261 | hidnplayr | 1008 | |
907 | mikedld | 1009 | mov esi, [sockAddr] |
261 | hidnplayr | 1010 | |
907 | mikedld | 1011 | ; increament SND.NXT in socket |
1012 | ; Amount to increment by is in ecx |
||
1013 | add esi, SOCKET.SND_NXT |
||
1014 | call add_inet_esi |
||
261 | hidnplayr | 1015 | |
907 | mikedld | 1016 | pop ebx |
261 | hidnplayr | 1017 | |
907 | mikedld | 1018 | ; Copy the IP buffer to a resend queue |
1019 | ; If there isn't one, dont worry about it for now |
||
1020 | mov esi, resendQ |
||
1021 | mov ecx, 0 |
||
261 | hidnplayr | 1022 | |
907 | mikedld | 1023 | .next_resendq: |
1024 | cmp ecx, NUMRESENDENTRIES |
||
1025 | je .exit ; None found |
||
1026 | ;cmp byte[esi], 0xff ; XTODO: 0xff -> 0 |
||
1027 | cmp dword[esi + 4], 0 |
||
1028 | je @f ; found one |
||
1029 | inc ecx |
||
1030 | add esi, 8 |
||
1031 | jmp .next_resendq |
||
261 | hidnplayr | 1032 | |
907 | mikedld | 1033 | @@: push ebx |
261 | hidnplayr | 1034 | |
907 | mikedld | 1035 | ; OK, we have a buffer descriptor ptr in esi. |
1036 | ; resend entry # in ecx |
||
1037 | ; Populate it |
||
1038 | ; socket # |
||
1039 | ; retries count |
||
1040 | ; retry time |
||
1041 | ; fill IP buffer associated with this descriptor |
||
261 | hidnplayr | 1042 | |
907 | mikedld | 1043 | stdcall net_socket_addr_to_num, [sockAddr] |
1044 | ;mov [esi], al ; XTODO: al -> eax |
||
1045 | mov [esi + 4], eax |
||
1046 | mov byte[esi + 1], TCP_RETRIES |
||
1047 | mov word[esi + 2], TCP_TIMEOUT |
||
261 | hidnplayr | 1048 | |
907 | mikedld | 1049 | inc ecx |
1050 | ; Now get buffer location, and copy buffer across. argh! more copying,, |
||
1051 | mov edi, resendBuffer - IPBUFFSIZE |
||
261 | hidnplayr | 1052 | |
907 | mikedld | 1053 | @@: add edi, IPBUFFSIZE |
1054 | loop @b |
||
261 | hidnplayr | 1055 | |
907 | mikedld | 1056 | ; we have dest buffer location in edi |
1057 | pop eax |
||
1058 | ; convert source buffer pointer eax to the absolute address |
||
1059 | mov ecx, IPBUFFSIZE |
||
1060 | mul ecx |
||
1061 | add eax, IPbuffs |
||
1062 | mov esi, eax |
||
261 | hidnplayr | 1063 | |
907 | mikedld | 1064 | ; do copy |
1065 | mov ecx, IPBUFFSIZE |
||
1066 | cld |
||
1067 | rep movsb |
||
261 | hidnplayr | 1068 | |
907 | mikedld | 1069 | .exit: |
1070 | xor eax, eax |
||
1071 | ret |
||
261 | hidnplayr | 1072 | |
907 | mikedld | 1073 | .error: |
1074 | or eax, -1 |
||
1075 | ret |
||
1076 | endp |