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Rev | Author | Line No. | Line |
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1159 | hidnplayr | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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1196 | hidnplayr | 3 | ;; Copyright (C) KolibriOS team 2004-2009. All rights reserved. ;; |
1159 | hidnplayr | 4 | ;; Distributed under terms of the GNU General Public License ;; |
5 | ;; ;; |
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6 | ;; SOCKET.INC ;; |
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7 | ;; ;; |
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8 | ;; Written by hidnplayr@kolibrios.org ;; |
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9 | ;; based on code by mike.dld ;; |
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10 | ;; ;; |
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11 | ;; GNU GENERAL PUBLIC LICENSE ;; |
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12 | ;; Version 2, June 1991 ;; |
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13 | ;; ;; |
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14 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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15 | |||
1206 | hidnplayr | 16 | $Revision: 1255 $ |
1159 | hidnplayr | 17 | |
1249 | hidnplayr | 18 | struct SOCKET_head |
1159 | hidnplayr | 19 | .PrevPtr dd ? ; pointer to previous socket in list |
20 | .NextPtr dd ? ; pointer to next socket in list |
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21 | .Number dd ? ; socket number (unique within single process) |
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22 | .PID dd ? ; application process id |
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23 | .Domain dd ? ; INET/UNIX/.. |
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24 | .Type dd ? ; RAW/UDP/TCP/... |
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1196 | hidnplayr | 25 | .Protocol dd ? ; ICMP/IPv4/ARP/ |
1249 | hidnplayr | 26 | .lock dd ? ; lock mutex |
27 | .end: |
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28 | ends |
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29 | |||
30 | struct IPv4_SOCKET |
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31 | .LocalIP dd ? |
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32 | .RemoteIP dd ? |
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33 | .SequenceNumber dd ? |
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34 | |||
35 | ; todo: add options (for func 8 and 9) |
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36 | |||
37 | .end: |
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38 | ends |
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39 | |||
40 | struct TCP_SOCKET |
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41 | |||
42 | .LocalPort dw ? ; In INET byte order |
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43 | .RemotePort dw ? ; In INET byte order |
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44 | |||
45 | .backlog dw ? ; Backlog |
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1254 | hidnplayr | 46 | ; .OrigRemoteIP dd ? ; original remote IP address (used to reset to LISTEN state) |
47 | ; .OrigRemotePort dw ? ; original remote port (used to reset to LISTEN state) |
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48 | .wndsizeTimer dd ? ; window size timer |
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49 | |||
50 | ; Transmission control block |
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51 | .state dd ? ; TCB state |
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52 | .timer dd ? ; TCB timer (seconds) |
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53 | .ISS dd ? ; initial send sequence number |
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54 | .IRS dd ? ; initial receive sequence number |
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1196 | hidnplayr | 55 | .SND_UNA dd ? ; sequence number of unack'ed sent Packets |
1249 | hidnplayr | 56 | .SND_NXT dd ? ; next send sequence number to use |
1196 | hidnplayr | 57 | .SND_WND dd ? ; send window |
58 | .RCV_NXT dd ? ; next receive sequence number to use |
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59 | .RCV_WND dd ? ; receive window |
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60 | .SEG_LEN dd ? ; segment length |
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61 | .SEG_WND dd ? ; segment window |
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1249 | hidnplayr | 62 | |
63 | .flags db ? ; packet flags |
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64 | |||
65 | .end: |
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1159 | hidnplayr | 66 | ends |
67 | |||
1249 | hidnplayr | 68 | struct UDP_SOCKET |
1159 | hidnplayr | 69 | |
1249 | hidnplayr | 70 | .LocalPort dw ? ; In INET byte order |
71 | .RemotePort dw ? ; In INET byte order |
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1159 | hidnplayr | 72 | |
1249 | hidnplayr | 73 | .end: |
74 | ends |
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75 | |||
76 | struct ICMP_SOCKET |
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77 | |||
78 | .Identifier dw ? ; |
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79 | |||
80 | .end: |
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81 | |||
82 | ends |
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83 | |||
84 | struct IPC_SOCKET |
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85 | |||
86 | .ConnectedTo dd ? ; Socket number of other socket this one is connected to |
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87 | |||
88 | .end: |
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89 | |||
90 | ends |
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91 | |||
92 | MAX_backlog equ 20 ; backlog for stream sockets |
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93 | SOCKETBUFFSIZE equ 4096 ; in bytes |
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94 | SOCKET_QUEUE_SIZE equ 10 ; maximum number ofincoming packets queued for 1 socket |
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95 | |||
1159 | hidnplayr | 96 | uglobal |
97 | net_sockets rd 2 |
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98 | last_UDP_port dw ? ; These values give the number of the last used ephemeral port |
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99 | last_TCP_port dw ? ; |
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100 | endg |
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101 | |||
102 | |||
103 | ;----------------------------------------------- |
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104 | ; |
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105 | ; SOCKET_init |
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106 | ; |
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107 | ; - |
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108 | ; |
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109 | ; IN: / |
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110 | ; OUT: / |
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111 | ; |
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112 | ;----------------------------------------------- |
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113 | |||
114 | align 4 |
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115 | socket_init: |
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116 | |||
117 | mov [net_sockets], 0 |
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118 | mov [net_sockets + 4], 0 |
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119 | |||
120 | mov [last_UDP_port], MIN_EPHEMERAL_PORT |
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121 | mov [last_TCP_port], MIN_EPHEMERAL_PORT |
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122 | |||
123 | ret |
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124 | |||
125 | |||
1254 | hidnplayr | 126 | ;----------------------------------------------- |
1159 | hidnplayr | 127 | ; |
128 | ; Socket API (function 74) |
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129 | ; |
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1254 | hidnplayr | 130 | ;----------------------------------------------- |
1159 | hidnplayr | 131 | |
132 | align 4 |
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133 | sys_socket: |
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1254 | hidnplayr | 134 | and ebx, 0x000000FF ; should i remove this line ? |
135 | cmp bl , 7 ; highest possible number |
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136 | jg s_error |
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137 | lea ebx, [.table + 4*ebx] |
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138 | jmp dword [ebx] |
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1159 | hidnplayr | 139 | |
1254 | hidnplayr | 140 | .table: |
141 | dd socket_open ; 0 |
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142 | dd socket_close ; 1 |
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143 | dd socket_bind ; 2 |
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144 | dd socket_listen ; 3 |
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145 | dd socket_connect ; 4 |
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146 | dd socket_accept ; 5 |
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147 | dd socket_send ; 6 |
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148 | dd socket_recv ; 7 |
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149 | ; dd socket_get_opt ; 8 |
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150 | ; dd socket_set_opt ; 9 |
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1159 | hidnplayr | 151 | |
1254 | hidnplayr | 152 | |
1185 | hidnplayr | 153 | s_error: |
1159 | hidnplayr | 154 | mov dword [esp+32],-1 |
155 | |||
156 | ret |
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157 | |||
158 | |||
159 | ;----------------------------------------------- |
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160 | ; |
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161 | ; SOCKET_open |
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162 | ; |
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163 | ; |
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164 | ; IN: domain in ecx |
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165 | ; type in edx |
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1196 | hidnplayr | 166 | ; protocol in esi |
1159 | hidnplayr | 167 | ; OUT: eax is socket num, -1 on error |
168 | ; |
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169 | ;----------------------------------------------- |
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1206 | hidnplayr | 170 | align 4 |
1159 | hidnplayr | 171 | socket_open: |
172 | |||
173 | DEBUGF 1,"socket_open: domain: %u, type: %u",ecx, edx |
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174 | |||
175 | call net_socket_alloc |
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176 | or eax, eax |
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1185 | hidnplayr | 177 | jz s_error |
1159 | hidnplayr | 178 | |
1249 | hidnplayr | 179 | mov [eax + SOCKET_head.Domain], ecx |
180 | mov [eax + SOCKET_head.Type], edx |
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181 | mov [eax + SOCKET_head.Protocol], esi |
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1159 | hidnplayr | 182 | |
183 | stdcall net_socket_addr_to_num, eax |
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184 | DEBUGF 1,", socketnumber: %u\n", eax |
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185 | |||
1254 | hidnplayr | 186 | ; TODO: if it is txcp socket, set state to TCB_CLOSED |
187 | |||
1159 | hidnplayr | 188 | mov [esp+32], eax |
189 | |||
190 | ret |
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191 | |||
192 | |||
193 | |||
194 | |||
1249 | hidnplayr | 195 | |
196 | |||
197 | |||
198 | |||
1159 | hidnplayr | 199 | ;----------------------------------------------- |
200 | ; |
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201 | ; SOCKET_bind |
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202 | ; |
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203 | ; IN: socket number in ecx |
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204 | ; pointer to sockaddr struct in edx |
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205 | ; length of that struct in esi |
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206 | ; OUT: 0 on success |
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207 | ; |
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208 | ;----------------------------------------------- |
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1206 | hidnplayr | 209 | align 4 |
1159 | hidnplayr | 210 | socket_bind: |
211 | |||
212 | DEBUGF 1,"Socket_bind: socknum: %u sockaddr: %x, length: %u, ",ecx,edx,esi |
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213 | |||
214 | stdcall net_socket_num_to_addr, ecx |
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215 | cmp eax, -1 |
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1185 | hidnplayr | 216 | jz s_error |
1159 | hidnplayr | 217 | |
218 | cmp esi, 2 |
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1185 | hidnplayr | 219 | jl s_error |
1159 | hidnplayr | 220 | |
221 | cmp word [edx], AF_INET4 |
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1249 | hidnplayr | 222 | je .af_inet4 |
1159 | hidnplayr | 223 | |
1249 | hidnplayr | 224 | cmp word [edx], AF_UNIX |
225 | je .af_unix |
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226 | |||
227 | jmp s_error |
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228 | |||
229 | .af_unix: |
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230 | |||
231 | ; TODO: write code here |
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232 | |||
233 | mov dword [esp+32],0 |
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234 | ret |
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235 | |||
1159 | hidnplayr | 236 | .af_inet4: |
237 | |||
238 | cmp esi, 6 |
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1185 | hidnplayr | 239 | jl s_error |
1159 | hidnplayr | 240 | |
1249 | hidnplayr | 241 | mov ecx, [eax + SOCKET_head.Type] |
242 | |||
1159 | hidnplayr | 243 | mov bx, word [edx + 2] |
1206 | hidnplayr | 244 | DEBUGF 1,"local port: %x ",bx |
1159 | hidnplayr | 245 | test bx, bx |
1206 | hidnplayr | 246 | jz .find_free |
1159 | hidnplayr | 247 | |
1206 | hidnplayr | 248 | call socket_check_port |
249 | test bx, bx |
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250 | je s_error |
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251 | jmp .got_port |
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1159 | hidnplayr | 252 | |
1249 | hidnplayr | 253 | .find_free: |
1159 | hidnplayr | 254 | |
1206 | hidnplayr | 255 | call socket_find_port |
256 | test bx, bx |
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257 | je s_error |
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1159 | hidnplayr | 258 | |
1249 | hidnplayr | 259 | .got_port: |
1206 | hidnplayr | 260 | DEBUGF 1,"using port: %x ",bx |
1249 | hidnplayr | 261 | mov word [eax + SOCKET_head.end + IPv4_SOCKET.end + UDP_SOCKET.LocalPort], bx |
1159 | hidnplayr | 262 | |
263 | mov ebx, dword [edx + 4] |
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1249 | hidnplayr | 264 | mov dword [eax + SOCKET_head.end + IPv4_SOCKET.LocalIP], ebx |
1159 | hidnplayr | 265 | |
266 | DEBUGF 1,"local ip: %u.%u.%u.%u\n",\ |
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1249 | hidnplayr | 267 | [eax + SOCKET_head.end + IPv4_SOCKET.LocalIP + 0]:1,[eax + SOCKET_head.end + IPv4_SOCKET.LocalIP + 1]:1,\ |
268 | [eax + SOCKET_head.end + IPv4_SOCKET.LocalIP + 2]:1,[eax + SOCKET_head.end + IPv4_SOCKET.LocalIP + 3]:1 |
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1159 | hidnplayr | 269 | |
270 | mov dword [esp+32],0 |
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271 | ret |
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272 | |||
273 | |||
274 | |||
275 | |||
276 | ;----------------------------------------------- |
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277 | ; |
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278 | ; SOCKET_connect |
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279 | ; |
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280 | ; |
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281 | ; IN: socket number in ecx |
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282 | ; pointer to sockaddr struct in edx |
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283 | ; length of that struct in esi |
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284 | ; OUT: 0 on success |
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285 | ; |
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286 | ;----------------------------------------------- |
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287 | align 4 |
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288 | socket_connect: |
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289 | |||
290 | DEBUGF 1,"Socket_connect: socknum: %u sockaddr: %x, length: %u,",ecx,edx,esi |
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291 | |||
292 | stdcall net_socket_num_to_addr, ecx |
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293 | cmp eax, -1 |
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1185 | hidnplayr | 294 | jz s_error |
1159 | hidnplayr | 295 | |
1254 | hidnplayr | 296 | cmp esi, 8 |
1185 | hidnplayr | 297 | jl s_error |
1159 | hidnplayr | 298 | |
299 | cmp word [edx], AF_INET4 |
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300 | je .af_inet4 |
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301 | |||
1185 | hidnplayr | 302 | jmp s_error |
1159 | hidnplayr | 303 | |
304 | .af_inet4: |
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305 | |||
1249 | hidnplayr | 306 | cmp [eax + SOCKET_head.Type], IP_PROTO_UDP |
1159 | hidnplayr | 307 | je .udp |
308 | |||
1249 | hidnplayr | 309 | cmp [eax + SOCKET_head.Type], IP_PROTO_TCP |
1206 | hidnplayr | 310 | je .tcp |
1159 | hidnplayr | 311 | |
1185 | hidnplayr | 312 | jmp s_error |
1159 | hidnplayr | 313 | |
1254 | hidnplayr | 314 | .udp: |
1159 | hidnplayr | 315 | |
316 | mov bx , word [edx + 2] |
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1249 | hidnplayr | 317 | mov word [eax + SOCKET_head.end + IPv4_SOCKET.end + UDP_SOCKET.RemotePort], bx |
1206 | hidnplayr | 318 | DEBUGF 1,"remote port: %x ",bx |
1159 | hidnplayr | 319 | |
320 | mov ebx, dword [edx + 4] |
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1249 | hidnplayr | 321 | mov dword [eax + SOCKET_head.end + IPv4_SOCKET.RemoteIP], ebx |
1159 | hidnplayr | 322 | DEBUGF 1,"remote ip: %u.%u.%u.%u\n",[edx+4]:1,[edx+5]:1,[edx+6]:1,[edx+7]:1 |
323 | |||
324 | mov dword [esp+32],0 |
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325 | ret |
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326 | |||
327 | |||
1254 | hidnplayr | 328 | .tcp: |
329 | ; TODO: set sequence number to random value |
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1159 | hidnplayr | 330 | |
331 | |||
1254 | hidnplayr | 332 | ; fill in remote port and IP |
1159 | hidnplayr | 333 | |
1254 | hidnplayr | 334 | mov [eax + SOCKET_head.end + IPv4_SOCKET.end + TCP_SOCKET.wndsizeTimer], 0 ; Reset the window timer. |
335 | ; TODO: figure out WTF this is |
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336 | mov bx , word [edx + 2] |
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337 | mov [eax + SOCKET_head.end + IPv4_SOCKET.end + TCP_SOCKET.RemotePort], bx |
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338 | DEBUGF 1,"remote port: %x ",bx |
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1159 | hidnplayr | 339 | |
1254 | hidnplayr | 340 | mov ebx, dword [edx + 4] |
341 | mov [eax + SOCKET_head.end + IPv4_SOCKET.RemoteIP], ebx |
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1159 | hidnplayr | 342 | |
1254 | hidnplayr | 343 | ; check if local port and IP is ok |
1159 | hidnplayr | 344 | |
1254 | hidnplayr | 345 | cmp [eax + SOCKET_head.end + IPv4_SOCKET.LocalIP], 0 |
346 | jne @f |
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347 | push [IP_LIST] ; device zero = default |
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348 | pop [eax + SOCKET_head.end + IPv4_SOCKET.LocalIP] |
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349 | @@: |
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1159 | hidnplayr | 350 | |
1254 | hidnplayr | 351 | cmp [eax + SOCKET_head.end + IPv4_SOCKET.end + TCP_SOCKET.LocalPort], 0 |
352 | jne @f |
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1159 | hidnplayr | 353 | |
1254 | hidnplayr | 354 | mov ecx, [eax + SOCKET_head.Type] |
355 | call socket_find_port |
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356 | test bx, bx |
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357 | jz s_error |
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1159 | hidnplayr | 358 | |
1254 | hidnplayr | 359 | mov [eax + SOCKET_head.end + IPv4_SOCKET.end + TCP_SOCKET.LocalPort], bx |
360 | @@: |
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1159 | hidnplayr | 361 | |
362 | |||
1254 | hidnplayr | 363 | mov [eax + SOCKET_head.end + IPv4_SOCKET.end + TCP_SOCKET.state], TCB_SYN_SENT |
364 | ; now say hello to the remote tcp socket |
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1159 | hidnplayr | 365 | |
1254 | hidnplayr | 366 | mov bl, TH_SYN |
367 | call TCP_send_ack |
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1159 | hidnplayr | 368 | |
1254 | hidnplayr | 369 | mov dword [esp+32],0 |
1159 | hidnplayr | 370 | ret |
371 | |||
372 | |||
373 | |||
374 | |||
375 | ;----------------------------------------------- |
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376 | ; |
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377 | ; SOCKET_listen |
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378 | ; |
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379 | ; |
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380 | ; IN: socket number in ecx |
||
381 | ; backlog in edx |
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382 | ; OUT: eax is socket num, -1 on error |
||
383 | ; |
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384 | ;----------------------------------------------- |
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1206 | hidnplayr | 385 | align 4 |
1159 | hidnplayr | 386 | socket_listen: |
387 | |||
388 | DEBUGF 1,"Socket_listen: socknum: %u backlog: %u\n",ecx,edx |
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389 | |||
390 | stdcall net_socket_num_to_addr, ecx |
||
391 | cmp eax, -1 |
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1185 | hidnplayr | 392 | jz s_error |
1159 | hidnplayr | 393 | |
1254 | hidnplayr | 394 | cmp word [eax + SOCKET_head.Domain], AF_INET4 |
395 | jne s_error |
||
396 | |||
397 | cmp [eax + SOCKET_head.Type], IP_PROTO_TCP |
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398 | jne s_error |
||
399 | |||
1159 | hidnplayr | 400 | cmp edx, MAX_backlog |
401 | jl .ok |
||
402 | mov dx , 20 |
||
403 | .ok: |
||
404 | |||
1249 | hidnplayr | 405 | mov [eax + SOCKET_head.end + IPv4_SOCKET.end + TCP_SOCKET.backlog], dx |
1254 | hidnplayr | 406 | mov [eax + SOCKET_head.end + IPv4_SOCKET.end + TCP_SOCKET.state], TCB_LISTEN |
1159 | hidnplayr | 407 | |
408 | mov dword [esp+32], 0 |
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409 | ret |
||
410 | |||
411 | |||
412 | |||
413 | |||
414 | |||
415 | |||
416 | ;----------------------------------------------- |
||
417 | ; |
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418 | ; SOCKET_accept |
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419 | ; |
||
420 | ; |
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421 | ; IN: socket number in ecx |
||
422 | ; addr in edx |
||
423 | ; addrlen in esi |
||
424 | ; OUT: eax is socket num, -1 on error |
||
425 | ; |
||
426 | ;----------------------------------------------- |
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1206 | hidnplayr | 427 | align 4 |
1159 | hidnplayr | 428 | socket_accept: |
429 | |||
430 | DEBUGF 1,"Socket_accept: socknum: %u sockaddr: %x, length: %u\n",ecx,edx,esi |
||
431 | |||
432 | stdcall net_socket_num_to_addr, ecx |
||
433 | or eax, eax |
||
1185 | hidnplayr | 434 | jz s_error |
1159 | hidnplayr | 435 | mov esi, eax |
436 | |||
1249 | hidnplayr | 437 | cmp word [esi + SOCKET_head.Domain], AF_INET4 |
438 | je .af_inet4 |
||
439 | |||
440 | jmp s_error |
||
441 | |||
442 | .af_inet4: |
||
443 | |||
444 | cmp [esi + SOCKET_head.Type], IP_PROTO_TCP |
||
445 | je .tcp |
||
446 | |||
447 | jmp s_error |
||
448 | |||
449 | .tcp: |
||
450 | |||
451 | cmp [esi + SOCKET_head.end + IPv4_SOCKET.end + TCP_SOCKET.backlog], 0 |
||
1185 | hidnplayr | 452 | jz s_error |
1159 | hidnplayr | 453 | |
454 | call net_socket_alloc |
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455 | or eax, eax |
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1185 | hidnplayr | 456 | jz s_error |
1159 | hidnplayr | 457 | mov edi, eax |
458 | |||
1249 | hidnplayr | 459 | dec [esi + SOCKET_head.end + IPv4_SOCKET.end + TCP_SOCKET.backlog] |
1159 | hidnplayr | 460 | |
1249 | hidnplayr | 461 | mov ecx, (SOCKET_head.end + IPv4_SOCKET.end + TCP_SOCKET.end+3)/4 |
462 | push esi edi |
||
1159 | hidnplayr | 463 | rep movsd |
1249 | hidnplayr | 464 | pop edi esi |
1159 | hidnplayr | 465 | |
1249 | hidnplayr | 466 | mov [edi + SOCKET_head.end + IPv4_SOCKET.end + TCP_SOCKET.backlog], 0 |
1159 | hidnplayr | 467 | |
468 | ; TODO: fill in structure in ecx |
||
469 | |||
1249 | hidnplayr | 470 | mov [esi + SOCKET_head.end + IPv4_SOCKET.RemoteIP], 0 |
471 | mov [esi + SOCKET_head.end + IPv4_SOCKET.end + TCP_SOCKET.RemotePort], 0 |
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1159 | hidnplayr | 472 | |
1249 | hidnplayr | 473 | stdcall net_socket_addr_to_num, edi |
1159 | hidnplayr | 474 | mov [esp+32], eax |
475 | |||
476 | ret |
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477 | |||
478 | |||
479 | |||
480 | ;----------------------------------------------- |
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481 | ; |
||
482 | ; SOCKET_close |
||
483 | ; |
||
484 | ; |
||
485 | ; IN: socket number in ecx |
||
486 | ; OUT: eax is socket num, -1 on error |
||
487 | ; |
||
488 | ;----------------------------------------------- |
||
1206 | hidnplayr | 489 | align 4 |
1159 | hidnplayr | 490 | socket_close: |
491 | |||
492 | DEBUGF 1,"Socket_close: socknum: %u\n",ecx |
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493 | |||
494 | stdcall net_socket_num_to_addr, ecx |
||
495 | or eax, eax |
||
1185 | hidnplayr | 496 | jz s_error |
1159 | hidnplayr | 497 | |
1249 | hidnplayr | 498 | cmp [eax + SOCKET_head.Domain], AF_INET4 |
499 | jne s_error |
||
1159 | hidnplayr | 500 | |
1249 | hidnplayr | 501 | cmp [eax + SOCKET_head.Type], IP_PROTO_UDP |
1159 | hidnplayr | 502 | je .udp |
503 | |||
1249 | hidnplayr | 504 | cmp [eax + SOCKET_head.Type], IP_PROTO_ICMP |
1159 | hidnplayr | 505 | je .icmp |
506 | |||
1249 | hidnplayr | 507 | cmp [eax + SOCKET_head.Type], IP_PROTO_TCP |
1206 | hidnplayr | 508 | je .tcp |
1159 | hidnplayr | 509 | |
1185 | hidnplayr | 510 | jmp s_error |
1159 | hidnplayr | 511 | |
512 | .udp: |
||
513 | |||
514 | stdcall net_socket_free, eax |
||
515 | mov dword [esp+32],0 |
||
516 | ret |
||
517 | |||
518 | |||
519 | .icmp: |
||
520 | |||
521 | |||
522 | |||
523 | ret |
||
524 | |||
525 | .tcp: |
||
1254 | hidnplayr | 526 | ; first, remove all resend entries for this socket |
1159 | hidnplayr | 527 | |
1254 | hidnplayr | 528 | cmp [eax + SOCKET_head.end + IPv4_SOCKET.end + TCP_SOCKET.state], TCB_LISTEN |
1159 | hidnplayr | 529 | je .destroy_tcb |
1254 | hidnplayr | 530 | cmp [eax + SOCKET_head.end + IPv4_SOCKET.end + TCP_SOCKET.state], TCB_SYN_SENT |
1159 | hidnplayr | 531 | je .destroy_tcb |
532 | |||
1254 | hidnplayr | 533 | ; Now construct the response, and queue for sending by IP |
1159 | hidnplayr | 534 | |
535 | mov bl, TH_FIN |
||
1254 | hidnplayr | 536 | call TCP_send_ack |
1159 | hidnplayr | 537 | |
538 | ; increament SND.NXT in socket |
||
1254 | hidnplayr | 539 | lea esi, [eax + SOCKET_head.end + IPv4_SOCKET.end + TCP_SOCKET.SND_NXT] |
540 | inc_INET esi |
||
1159 | hidnplayr | 541 | |
542 | ; Get the socket state |
||
1254 | hidnplayr | 543 | cmp [eax + SOCKET_head.end + IPv4_SOCKET.end + TCP_SOCKET.state], TCB_SYN_RECEIVED |
1159 | hidnplayr | 544 | je .fin_wait_1 |
1254 | hidnplayr | 545 | cmp [eax + SOCKET_head.end + IPv4_SOCKET.end + TCP_SOCKET.state], TCB_ESTABLISHED |
1159 | hidnplayr | 546 | je .fin_wait_1 |
547 | |||
548 | ; assume CLOSE WAIT |
||
549 | ; Send a fin, then enter last-ack state |
||
1254 | hidnplayr | 550 | mov [eax + SOCKET_head.end + IPv4_SOCKET.end + TCP_SOCKET.state], TCB_LAST_ACK |
1159 | hidnplayr | 551 | jmp .send |
552 | |||
553 | .fin_wait_1: |
||
554 | ; Send a fin, then enter finwait2 state |
||
1254 | hidnplayr | 555 | mov [eax + SOCKET_head.end + IPv4_SOCKET.end + TCP_SOCKET.state], TCB_FIN_WAIT_1 |
1159 | hidnplayr | 556 | |
557 | .send: |
||
558 | |||
1254 | hidnplayr | 559 | ;;;;; |
1159 | hidnplayr | 560 | |
561 | .destroy_tcb: |
||
562 | |||
563 | stdcall net_socket_free, eax |
||
564 | mov dword [esp+32],0 |
||
565 | ret |
||
566 | |||
567 | |||
568 | |||
569 | |||
570 | ;----------------------------------------------- |
||
571 | ; |
||
572 | ; SOCKET_receive |
||
573 | ; |
||
574 | ; |
||
575 | ; IN: socket number in ecx |
||
1249 | hidnplayr | 576 | ; addr to buffer in edx |
577 | ; length of buffer in esi |
||
1159 | hidnplayr | 578 | ; flags in edi |
579 | ; OUT: eax is number of bytes copied, -1 on error |
||
580 | ; |
||
581 | ;----------------------------------------------- |
||
1206 | hidnplayr | 582 | align 4 |
1159 | hidnplayr | 583 | socket_recv: |
584 | |||
1249 | hidnplayr | 585 | DEBUGF 1,"Socket_receive: socknum: %u bufferaddress: %x, length: %u, flags: %x\n",ecx,edx,esi,edi |
1159 | hidnplayr | 586 | |
587 | stdcall net_socket_num_to_addr, ecx ; get real socket address |
||
588 | or eax, eax |
||
1185 | hidnplayr | 589 | jz s_error |
1159 | hidnplayr | 590 | |
1249 | hidnplayr | 591 | DEBUGF 1,"Socket pointer: %x\n", eax |
1159 | hidnplayr | 592 | |
1249 | hidnplayr | 593 | get_from_queue (eax + 2048), SOCKET_QUEUE_SIZE, 4*3, s_error |
1159 | hidnplayr | 594 | |
595 | mov edi, edx |
||
1249 | hidnplayr | 596 | mov ecx, [esi + socket_queue_entry.data_size] |
1159 | hidnplayr | 597 | |
1249 | hidnplayr | 598 | DEBUGF 1,"Got %u bytes of data\n", ecx |
1159 | hidnplayr | 599 | |
1249 | hidnplayr | 600 | cmp ecx, edx |
601 | jle .large_enough |
||
602 | DEBUGF 1,"Buffer too small...\n" |
||
603 | jmp s_error |
||
604 | .large_enough: |
||
1159 | hidnplayr | 605 | |
1249 | hidnplayr | 606 | push [esi + socket_queue_entry.data_ptr] |
607 | mov esi, [esi + socket_queue_entry.offset] |
||
608 | add esi, [esp] |
||
609 | DEBUGF 1,"Source buffer: %x, real addr: %x\n", [esp], esi |
||
1159 | hidnplayr | 610 | |
1249 | hidnplayr | 611 | mov dword[esp+32+4], ecx ; return number of bytes copied |
1159 | hidnplayr | 612 | |
1249 | hidnplayr | 613 | shr ecx, 1 |
614 | jnc .nb |
||
615 | movsb |
||
616 | .nb: shr ecx, 1 |
||
617 | jnc .nw |
||
618 | movsw |
||
619 | .nw: rep movsd |
||
1159 | hidnplayr | 620 | |
1249 | hidnplayr | 621 | call kernel_free |
1159 | hidnplayr | 622 | |
623 | ret |
||
624 | |||
625 | |||
626 | ;----------------------------------------------- |
||
627 | ; |
||
628 | ; SOCKET_send |
||
629 | ; |
||
630 | ; |
||
631 | ; IN: socket number in ecx |
||
1206 | hidnplayr | 632 | ; pointer to data in edx |
633 | ; datalength in esi |
||
1159 | hidnplayr | 634 | ; flags in edi |
635 | ; OUT: -1 on error |
||
636 | ; |
||
637 | ;----------------------------------------------- |
||
1254 | hidnplayr | 638 | |
1206 | hidnplayr | 639 | align 4 |
1159 | hidnplayr | 640 | socket_send: |
641 | |||
642 | DEBUGF 1,"Socket_send: socknum: %u sockaddr: %x, length: %u, flags: %x, ",ecx,edx,esi,edi |
||
643 | |||
644 | stdcall net_socket_num_to_addr, ecx ; get real socket address |
||
645 | or eax, eax |
||
1185 | hidnplayr | 646 | jz s_error |
1159 | hidnplayr | 647 | |
1249 | hidnplayr | 648 | cmp word [eax + SOCKET_head.Domain], AF_INET4 |
1206 | hidnplayr | 649 | je .af_inet4 |
650 | |||
651 | jmp s_error |
||
652 | |||
653 | .af_inet4: |
||
1249 | hidnplayr | 654 | DEBUGF 1,"Socket type:%u\n", [eax + SOCKET_head.Type]:4 |
1206 | hidnplayr | 655 | |
1249 | hidnplayr | 656 | cmp [eax + SOCKET_head.Type], IP_PROTO_TCP |
657 | je .tcp |
||
1159 | hidnplayr | 658 | |
1249 | hidnplayr | 659 | cmp [eax + SOCKET_head.Type], IP_PROTO_UDP |
1159 | hidnplayr | 660 | je .udp |
661 | |||
1249 | hidnplayr | 662 | cmp [eax + SOCKET_head.Type], SOCK_RAW |
663 | je .raw |
||
1159 | hidnplayr | 664 | |
1185 | hidnplayr | 665 | jmp s_error |
1159 | hidnplayr | 666 | |
667 | .udp: |
||
668 | |||
1206 | hidnplayr | 669 | DEBUGF 1,"type: UDP, " |
1159 | hidnplayr | 670 | |
1249 | hidnplayr | 671 | cmp [eax + SOCKET_head.end + IPv4_SOCKET.end + UDP_SOCKET.LocalPort],0 |
672 | jne @f |
||
1206 | hidnplayr | 673 | |
1208 | hidnplayr | 674 | push esi |
1249 | hidnplayr | 675 | mov ecx, [eax + SOCKET_head.Type] |
1206 | hidnplayr | 676 | call socket_find_port |
677 | test bx, bx |
||
1208 | hidnplayr | 678 | pop esi |
1206 | hidnplayr | 679 | je s_error |
1249 | hidnplayr | 680 | mov [eax + SOCKET_head.end + IPv4_SOCKET.end + UDP_SOCKET.LocalPort], bx |
1206 | hidnplayr | 681 | |
1249 | hidnplayr | 682 | @@: |
1206 | hidnplayr | 683 | |
1159 | hidnplayr | 684 | mov ecx, esi |
685 | mov esi, edx |
||
686 | |||
1249 | hidnplayr | 687 | call UDP_socket_send |
1159 | hidnplayr | 688 | |
689 | mov [esp+32], eax |
||
690 | ret |
||
691 | |||
1249 | hidnplayr | 692 | .tcp: |
1159 | hidnplayr | 693 | |
1254 | hidnplayr | 694 | cmp [eax + SOCKET_head.end + IPv4_SOCKET.end + TCP_SOCKET.LocalPort],0 |
695 | jne @f |
||
696 | |||
697 | push esi |
||
698 | mov ecx, [eax + SOCKET_head.Type] |
||
699 | call socket_find_port |
||
700 | test bx, bx |
||
701 | pop esi |
||
702 | je s_error |
||
703 | mov [eax + SOCKET_head.end + IPv4_SOCKET.end + TCP_SOCKET.LocalPort], bx |
||
704 | |||
705 | @@: |
||
706 | |||
707 | mov ecx, esi |
||
708 | mov esi, edx |
||
709 | |||
710 | call TCP_socket_send |
||
711 | |||
1249 | hidnplayr | 712 | mov [esp+32], eax |
713 | ret |
||
1159 | hidnplayr | 714 | |
1249 | hidnplayr | 715 | .raw: |
716 | cmp [eax + SOCKET_head.Protocol], IP_PROTO_IP |
||
717 | je .raw_ip |
||
718 | |||
719 | cmp [eax + SOCKET_head.Protocol], IP_PROTO_ICMP |
||
720 | je .raw_icmp |
||
721 | |||
722 | jmp s_error |
||
723 | |||
724 | |||
725 | .raw_ip: |
||
726 | |||
1254 | hidnplayr | 727 | ;;;;;; |
728 | |||
1159 | hidnplayr | 729 | mov [esp+32], eax |
730 | ret |
||
731 | |||
732 | |||
1249 | hidnplayr | 733 | .raw_icmp: |
734 | |||
735 | ; sub ecx, ICMP_Packet.Data |
||
736 | ; mov esi, edx |
||
737 | ; push ax |
||
738 | ; call IPv4_get_frgmnt_num |
||
739 | ; mov dx, ax |
||
740 | ; pop ax |
||
741 | ; shl edx, 16 |
||
742 | ; mov dh , [esi + ICMP_Packet.Type] |
||
743 | ; mov dl , [esi + ICMP_Packet.Code] |
||
744 | ; mov di , [esi + ICMP_Packet.Identifier] |
||
745 | ; mov [eax + SOCKET.LocalPort], di ; Set localport to the identifier number, so we can receive reply's |
||
746 | ; shl edi, 16 |
||
747 | ; mov di , [esi + ICMP_Packet.SequenceNumber] |
||
748 | ; add esi, ICMP_Packet.Data |
||
749 | ; mov ebx, [eax + SOCKET.LocalIP] |
||
750 | ; mov eax, [eax + SOCKET.RemoteIP] |
||
751 | ; call ICMP_create_packet |
||
752 | |||
753 | mov [esp+32], eax |
||
1159 | hidnplayr | 754 | ret |
755 | |||
756 | |||
757 | |||
1206 | hidnplayr | 758 | ;----------------------------------------------- |
759 | ; |
||
760 | ; SOCKET_find_free_port (local port) |
||
761 | ; |
||
762 | ; works with INET byte order |
||
763 | ; |
||
764 | ; IN: type in ecx (TCP/UDP) |
||
765 | ; OUT: bx = 0 on error, portnumber otherwise |
||
766 | ; |
||
767 | ;----------------------------------------------- |
||
768 | align 4 |
||
769 | socket_find_port: |
||
1159 | hidnplayr | 770 | |
1208 | hidnplayr | 771 | DEBUGF 1,"Socket_find_free_port\n" |
1159 | hidnplayr | 772 | |
1206 | hidnplayr | 773 | cmp ecx, IP_PROTO_UDP |
774 | je .udp |
||
1159 | hidnplayr | 775 | |
1206 | hidnplayr | 776 | cmp ecx, IP_PROTO_TCP |
777 | je .tcp |
||
1159 | hidnplayr | 778 | |
1206 | hidnplayr | 779 | .udp: |
780 | mov bx, [last_UDP_port] |
||
781 | je .continue |
||
782 | |||
783 | .tcp: |
||
784 | mov bx, [last_TCP_port] |
||
785 | |||
786 | |||
787 | .continue: |
||
788 | inc bx |
||
789 | |||
790 | .check_only: |
||
791 | mov esi, net_sockets |
||
792 | |||
793 | .next_socket: |
||
1249 | hidnplayr | 794 | mov esi, [esi + SOCKET_head.NextPtr] |
1206 | hidnplayr | 795 | or esi, esi |
796 | jz .port_ok |
||
797 | |||
1249 | hidnplayr | 798 | cmp [esi + SOCKET_head.Type], ecx |
1206 | hidnplayr | 799 | jne .next_socket |
800 | |||
801 | rol bx, 8 |
||
1249 | hidnplayr | 802 | cmp [esi + SOCKET_head.end + IPv4_SOCKET.end + UDP_SOCKET.LocalPort], bx |
1206 | hidnplayr | 803 | rol bx, 8 ; this doesnt change the zero flag, does it ? |
804 | jne .next_socket |
||
805 | |||
806 | cmp bx, MAX_EPHEMERAL_PORT |
||
807 | jle .continue |
||
808 | |||
809 | ; todo: WRAP! |
||
810 | ; mov [last_UDP_port], MIN_EPHEMERAL_PORT |
||
811 | .exit: |
||
812 | xor ebx, ebx |
||
813 | |||
814 | .port_ok: |
||
815 | rol bx, 8 |
||
816 | ret |
||
817 | |||
818 | ;----------------------------------------------- |
||
819 | ; |
||
820 | ; SOCKET_check_port (local port) |
||
821 | ; |
||
822 | ; works with INET byte order |
||
823 | ; |
||
824 | ; IN: type in ecx (TCP/UDP) |
||
825 | ; port to check in bx |
||
826 | ; OUT: bx = 0 on error, unchanged otherwise |
||
827 | ; |
||
828 | ;----------------------------------------------- |
||
829 | align 4 |
||
830 | socket_check_port: |
||
831 | mov esi, net_sockets |
||
832 | |||
833 | .next_socket: |
||
1249 | hidnplayr | 834 | mov esi, [esi + SOCKET_head.NextPtr] |
1206 | hidnplayr | 835 | or esi, esi |
836 | jz .port_ok |
||
837 | |||
1249 | hidnplayr | 838 | cmp [esi + SOCKET_head.Type], ecx |
1206 | hidnplayr | 839 | jne .next_socket |
840 | |||
1249 | hidnplayr | 841 | cmp [esi + SOCKET_head.end + IPv4_SOCKET.end + UDP_SOCKET.LocalPort], bx |
1206 | hidnplayr | 842 | jne .next_socket |
843 | |||
844 | xor ebx, ebx |
||
845 | |||
846 | .port_ok: |
||
847 | ret |
||
848 | |||
849 | |||
850 | ;----------------------------------------------- |
||
851 | ; |
||
852 | ; SOCKET_internal_receiver |
||
853 | ; |
||
1249 | hidnplayr | 854 | ; Updates a socket with received data |
1206 | hidnplayr | 855 | ; |
1249 | hidnplayr | 856 | ; Note: the mutex must already be set ! |
1206 | hidnplayr | 857 | ; |
1249 | hidnplayr | 858 | ; IN: eax = socket ptr |
859 | ; ecx = size |
||
860 | ; esi = pointer to buffer |
||
861 | ; edi = offset |
||
862 | ; |
||
1206 | hidnplayr | 863 | ; OUT: xxx |
864 | ; |
||
865 | ;----------------------------------------------- |
||
866 | align 4 |
||
867 | socket_internal_receiver: |
||
868 | |||
1255 | hidnplayr | 869 | DEBUGF 1,"Internal socket receiver: buffer %x, offset: %x size=%u socket: %x\n", esi, edi, ecx, eax |
1206 | hidnplayr | 870 | |
1249 | hidnplayr | 871 | push edi ; offset |
872 | push ecx ; size |
||
873 | push esi ; data_ptr |
||
874 | mov esi, esp |
||
875 | add_to_queue (eax + 2048), SOCKET_QUEUE_SIZE, 3*4, .full |
||
876 | DEBUGF 1,"Queued packet successfully\n" |
||
877 | add esp, 4*3 |
||
1206 | hidnplayr | 878 | |
1249 | hidnplayr | 879 | mov [eax + SOCKET_head.lock], 0 |
1206 | hidnplayr | 880 | |
881 | ; flag an event to the application |
||
1249 | hidnplayr | 882 | mov edx, [eax + SOCKET_head.PID] ; get socket owner PID |
1206 | hidnplayr | 883 | mov ecx, 1 |
884 | mov esi, TASK_DATA + TASKDATA.pid |
||
885 | |||
886 | .next_pid: |
||
887 | cmp [esi], edx |
||
888 | je .found_pid |
||
889 | inc ecx |
||
890 | add esi, 0x20 |
||
891 | cmp ecx, [TASK_COUNT] |
||
892 | jbe .next_pid |
||
893 | ret |
||
894 | |||
895 | .found_pid: |
||
896 | shl ecx, 8 |
||
1249 | hidnplayr | 897 | or [ecx + SLOT_BASE + APPDATA.event_mask], EVENT_NETWORK ; stack event |
1206 | hidnplayr | 898 | mov [check_idle_semaphore], 200 |
899 | ret |
||
900 | |||
1249 | hidnplayr | 901 | .full: |
902 | DEBUGF 1,"Socket %x is full!\n",eax |
||
903 | mov [eax + SOCKET_head.lock], 0 |
||
904 | call kernel_free |
||
905 | add esp, 8 |
||
1206 | hidnplayr | 906 | ret |
907 | |||
908 | |||
909 | |||
910 | |||
1159 | hidnplayr | 911 | ; Allocate memory for socket data and put new socket into the list |
912 | ; Newly created socket is initialized with calling PID and number and |
||
913 | ; put into beginning of list (which is a fastest way). |
||
914 | ; |
||
915 | ; @return socket structure address in EAX |
||
916 | ; |
||
917 | proc net_socket_alloc stdcall uses ebx ecx edx edi |
||
918 | stdcall kernel_alloc, SOCKETBUFFSIZE |
||
919 | DEBUGF 1, "K : net_socket_alloc (0x%x)\n", eax |
||
920 | ; check if we can allocate needed amount of memory |
||
921 | or eax, eax |
||
922 | jz .exit |
||
923 | |||
924 | ; zero-initialize allocated memory |
||
925 | push eax |
||
926 | mov edi, eax |
||
1249 | hidnplayr | 927 | |
1159 | hidnplayr | 928 | mov ecx, SOCKETBUFFSIZE / 4 |
929 | ; cld |
||
930 | xor eax, eax |
||
931 | rep stosd |
||
932 | pop eax |
||
933 | |||
1249 | hidnplayr | 934 | init_queue (eax + 2048) |
935 | |||
1159 | hidnplayr | 936 | ; add socket to the list by changing pointers |
937 | mov ebx, net_sockets |
||
1249 | hidnplayr | 938 | push [ebx + SOCKET_head.NextPtr] |
939 | mov [ebx + SOCKET_head.NextPtr], eax |
||
940 | mov [eax + SOCKET_head.PrevPtr], ebx |
||
1159 | hidnplayr | 941 | pop ebx |
1249 | hidnplayr | 942 | mov [eax + SOCKET_head.NextPtr], ebx |
1159 | hidnplayr | 943 | or ebx, ebx |
944 | jz @f |
||
1249 | hidnplayr | 945 | mov [ebx + SOCKET_head.PrevPtr], eax |
1159 | hidnplayr | 946 | |
947 | @@: ; set socket owner PID to the one of calling process |
||
948 | mov ebx, [TASK_BASE] |
||
949 | mov ebx, [ebx + TASKDATA.pid] |
||
1249 | hidnplayr | 950 | mov [eax + SOCKET_head.PID], ebx |
1159 | hidnplayr | 951 | |
952 | ; find first free socket number and use it |
||
953 | ;mov edx, ebx |
||
954 | mov ebx, net_sockets |
||
955 | xor ecx, ecx |
||
956 | .next_socket_number: |
||
957 | inc ecx |
||
958 | .next_socket: |
||
1249 | hidnplayr | 959 | mov ebx, [ebx + SOCKET_head.NextPtr] |
1159 | hidnplayr | 960 | or ebx, ebx |
961 | jz .last_socket_number |
||
1249 | hidnplayr | 962 | cmp [ebx + SOCKET_head.Number], ecx |
1159 | hidnplayr | 963 | jne .next_socket |
964 | ;cmp [ebx + SOCKET.PID], edx |
||
965 | ;jne .next_socket |
||
966 | mov ebx, net_sockets |
||
967 | jmp .next_socket_number |
||
968 | |||
969 | .last_socket_number: |
||
1249 | hidnplayr | 970 | mov [eax + SOCKET_head.Number], ecx |
1159 | hidnplayr | 971 | |
972 | .exit: |
||
973 | ret |
||
974 | endp |
||
975 | |||
976 | ; Free socket data memory and pop socket off the list |
||
977 | ; |
||
978 | ; @param sockAddr is a socket structure address |
||
979 | ; |
||
980 | proc net_socket_free stdcall uses ebx ecx edx, sockAddr:DWORD |
||
981 | mov eax, [sockAddr] |
||
982 | DEBUGF 1, "K : net_socket_free (0x%x)\n", eax |
||
983 | ; check if we got something similar to socket structure address |
||
984 | or eax, eax |
||
985 | jz .error |
||
986 | |||
987 | ; make sure sockAddr is one of the socket addresses in the list |
||
988 | mov ebx, net_sockets |
||
989 | ;mov ecx, [TASK_BASE] |
||
990 | ;mov ecx, [ecx + TASKDATA.pid] |
||
991 | .next_socket: |
||
1249 | hidnplayr | 992 | mov ebx, [ebx + SOCKET_head.NextPtr] |
1159 | hidnplayr | 993 | or ebx, ebx |
994 | jz .error |
||
995 | cmp ebx, eax |
||
996 | jne .next_socket |
||
997 | ;cmp [ebx + SOCKET.PID], ecx |
||
998 | ;jne .next_socket |
||
999 | |||
1000 | ; okay, we found the correct one |
||
1001 | ; remove it from the list first, changing pointers |
||
1249 | hidnplayr | 1002 | mov ebx, [eax + SOCKET_head.NextPtr] |
1003 | mov eax, [eax + SOCKET_head.PrevPtr] |
||
1004 | mov [eax + SOCKET_head.NextPtr], ebx |
||
1159 | hidnplayr | 1005 | or ebx, ebx |
1006 | jz @f |
||
1249 | hidnplayr | 1007 | mov [ebx + SOCKET_head.PrevPtr], eax |
1159 | hidnplayr | 1008 | |
1249 | hidnplayr | 1009 | lea ebx, [eax + SOCKET_head.lock] |
1010 | call wait_mutex |
||
1011 | |||
1159 | hidnplayr | 1012 | @@: ; and finally free the memory structure used |
1013 | stdcall kernel_free, [sockAddr] |
||
1014 | ret |
||
1015 | |||
1016 | .error: |
||
1017 | DEBUGF 1, "K : failed\n" |
||
1018 | ret |
||
1019 | endp |
||
1020 | |||
1021 | ; Get socket structure address by its number |
||
1022 | ; Scan through sockets list to find the socket with specified number. |
||
1023 | ; This proc uses SOCKET.PID indirectly to check if socket is owned by |
||
1024 | ; calling process. |
||
1025 | ; |
||
1026 | ; @param sockNum is a socket number |
||
1027 | ; @return socket structure address or 0 (not found) in EAX |
||
1028 | ; |
||
1029 | proc net_socket_num_to_addr stdcall uses ebx ecx, sockNum:DWORD |
||
1030 | mov eax, [sockNum] |
||
1031 | ; check if we got something similar to socket number |
||
1032 | or eax, eax |
||
1033 | jz .error |
||
1034 | |||
1035 | ; scan through sockets list |
||
1036 | mov ebx, net_sockets |
||
1037 | ;mov ecx, [TASK_BASE] |
||
1038 | ;mov ecx, [ecx + TASKDATA.pid] |
||
1039 | .next_socket: |
||
1249 | hidnplayr | 1040 | mov ebx, [ebx + SOCKET_head.NextPtr] |
1159 | hidnplayr | 1041 | or ebx, ebx |
1042 | jz .error |
||
1249 | hidnplayr | 1043 | cmp [ebx + SOCKET_head.Number], eax |
1159 | hidnplayr | 1044 | jne .next_socket |
1045 | ;cmp [ebx + SOCKET.PID], ecx |
||
1046 | ;jne .next_socket |
||
1047 | |||
1048 | ; okay, we found the correct one |
||
1049 | mov eax, ebx |
||
1050 | ret |
||
1051 | |||
1052 | .error: |
||
1053 | xor eax, eax |
||
1054 | ret |
||
1055 | endp |
||
1056 | |||
1057 | ; Get socket number by its structure address |
||
1058 | ; Scan through sockets list to find the socket with specified address. |
||
1059 | ; This proc uses SOCKET.PID indirectly to check if socket is owned by |
||
1060 | ; calling process. |
||
1061 | ; |
||
1062 | ; @param sockAddr is a socket structure address |
||
1063 | ; @return socket number (SOCKET.Number) or 0 (not found) in EAX |
||
1064 | ; |
||
1065 | proc net_socket_addr_to_num stdcall uses ebx ecx, sockAddr:DWORD |
||
1066 | mov eax, [sockAddr] |
||
1067 | ; check if we got something similar to socket structure address |
||
1068 | or eax, eax |
||
1069 | jz .error |
||
1070 | |||
1071 | ; scan through sockets list |
||
1072 | mov ebx, net_sockets |
||
1073 | ;mov ecx, [TASK_BASE] |
||
1074 | ;mov ecx, [ecx + TASKDATA.pid] |
||
1075 | .next_socket: |
||
1249 | hidnplayr | 1076 | mov ebx, [ebx + SOCKET_head.NextPtr] |
1159 | hidnplayr | 1077 | or ebx, ebx |
1078 | jz .error |
||
1079 | cmp ebx, eax |
||
1080 | jne .next_socket |
||
1081 | ;cmp [ebx + SOCKET.PID], ecx |
||
1082 | ;jne .next_socket |
||
1083 | |||
1084 | ; okay, we found the correct one |
||
1249 | hidnplayr | 1085 | mov eax, [ebx + SOCKET_head.Number] |
1159 | hidnplayr | 1086 | ret |
1087 | |||
1088 | .error: |
||
1089 | xor eax, eax |
||
1090 | ret |
||
1091 | endp |