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Rev | Author | Line No. | Line |
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1159 | hidnplayr | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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1514 | hidnplayr | 3 | ;; Copyright (C) KolibriOS team 2004-2010. 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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1514 | hidnplayr | 9 | ;; based on code by mike.dld ;; |
1159 | hidnplayr | 10 | ;; ;; |
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: 1514 $ |
1159 | hidnplayr | 17 | |
1514 | hidnplayr | 18 | virtual at 0 |
1249 | hidnplayr | 19 | |
1514 | hidnplayr | 20 | SOCKET: |
21 | .NextPtr dd ? ; pointer to next socket in list |
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22 | .PrevPtr dd ? ; pointer to previous socket in list |
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23 | .Number dd ? ; socket number |
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1249 | hidnplayr | 24 | |
1514 | hidnplayr | 25 | .lock dd ? ; lock mutex |
1249 | hidnplayr | 26 | |
1514 | hidnplayr | 27 | .PID dd ? ; application process id |
28 | .Domain dd ? ; INET/UNIX/.. |
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29 | .Type dd ? ; RAW/UDP/TCP/... |
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30 | .Protocol dd ? ; ICMP/IPv4/ARP/ |
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31 | .errorcode dd ? |
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1249 | hidnplayr | 32 | |
1514 | hidnplayr | 33 | .options dd ? |
34 | .SO_SND.SB_CC dd ? ;;;;; socket options: number of bytes in socket |
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35 | .SO_RCV.SB_CC dd ? |
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36 | .state dd ? ;;;;;;;;; |
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1249 | hidnplayr | 37 | |
1514 | hidnplayr | 38 | .end: |
39 | end virtual |
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1249 | hidnplayr | 40 | |
1514 | hidnplayr | 41 | virtual at SOCKET.end |
1254 | hidnplayr | 42 | |
1514 | hidnplayr | 43 | IP_SOCKET: |
1318 | hidnplayr | 44 | |
1514 | hidnplayr | 45 | .LocalIP dd ? |
46 | rd 3 ; for IPv6 addresses |
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1249 | hidnplayr | 47 | |
1514 | hidnplayr | 48 | .RemoteIP dd ? |
49 | rd 3 ; for IPv6 addresses |
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1249 | hidnplayr | 50 | |
1514 | hidnplayr | 51 | .end: |
52 | end virtual |
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1159 | hidnplayr | 53 | |
1514 | hidnplayr | 54 | virtual at SOCKET.end |
1159 | hidnplayr | 55 | |
1514 | hidnplayr | 56 | SOCKET_virtual: |
1159 | hidnplayr | 57 | |
1514 | hidnplayr | 58 | .ConnectedTo dd ? ; Socket number of other socket this one is connected to |
1249 | hidnplayr | 59 | |
1514 | hidnplayr | 60 | .end: |
61 | end virtual |
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1249 | hidnplayr | 62 | |
1514 | hidnplayr | 63 | virtual at IP_SOCKET.end |
1249 | hidnplayr | 64 | |
1514 | hidnplayr | 65 | TCP_SOCKET: |
66 | |||
67 | .LocalPort dw ? ; In INET byte order |
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68 | .RemotePort dw ? ; In INET byte order |
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69 | |||
70 | .backlog dw ? ; Backlog |
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71 | .backlog_cur dw ? ; current size of queue for un-accept-ed connections |
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72 | |||
73 | .OrigRemoteIP dd ? ; original remote IP address (used to reset to LISTEN state) |
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74 | .OrigRemotePort dw ? ; original remote port (used to reset to LISTEN state) |
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75 | |||
76 | .t_state dd ? ; TCB state |
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77 | .t_timer dd ? ; TCB timer (seconds) |
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78 | .t_rxtshift dd ? |
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79 | .t_rxtcur dd ? |
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80 | .t_dupacks dd ? |
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81 | .t_maxseg dd ? |
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82 | .t_force dd ? |
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83 | .t_flags dd ? |
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84 | |||
85 | ;--------------- |
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86 | ; RFC783 page 21 |
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87 | |||
88 | ; send sequence |
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89 | .SND_UNA dd ? ; sequence number of unack'ed sent Packets |
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90 | .SND_NXT dd ? ; next send sequence number to use |
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91 | .SND_UP dd ? |
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92 | .SND_WL1 dd ? ; window minus one |
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93 | .SND_WL2 dd ? ; |
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94 | .ISS dd ? ; initial send sequence number |
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95 | .SND_WND dd ? ; send window |
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96 | |||
97 | ; receive sequence |
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98 | .RCV_WND dw ? ; receive window |
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99 | .RCV_NXT dd ? ; next receive sequence number to use |
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100 | .RCV_UP dd ? |
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101 | .IRS dd ? ; initial receive sequence number |
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102 | |||
103 | ;--------------------- |
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104 | ; Additional variables |
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105 | |||
106 | ; receive variables |
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107 | .RCV_ADV dd ? |
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108 | |||
109 | ; retransmit variables |
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110 | .SND_MAX dd ? |
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111 | |||
112 | ; congestion control |
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113 | .SND_CWND dd ? |
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114 | .SND_SSTHRESH dd ? |
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115 | |||
116 | ;---------------------- |
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117 | ; Transmit timing stuff |
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118 | |||
119 | .t_idle dd ? |
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120 | .t_rtt dd ? |
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121 | .t_rtseq dd ? |
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122 | .t_srtt dd ? |
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123 | .t_rttvar dd ? |
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124 | .t_rttmin dd ? |
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125 | .max_sndwnd dd ? |
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126 | |||
127 | ;----------------- |
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128 | ; Out-of-band data |
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129 | |||
130 | .t_oobflags dd ? |
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131 | .t_iobc dd ? |
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132 | .t_softerror dd ? |
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133 | |||
134 | |||
135 | ;--------- |
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136 | ; RFC 1323 |
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137 | |||
138 | .SND_SCALE db ? ; Scale factor |
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139 | .RCV_SCALE db ? |
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140 | .request_r_scale db ? |
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141 | .requested_s_scale dd ? |
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142 | |||
143 | .ts_recent dd ? |
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144 | .ts_recent_age dd ? |
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145 | .last_ack_sent dd ? |
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146 | |||
1249 | hidnplayr | 147 | .end: |
1514 | hidnplayr | 148 | end virtual |
1249 | hidnplayr | 149 | |
1514 | hidnplayr | 150 | virtual at IP_SOCKET.end |
1249 | hidnplayr | 151 | |
1514 | hidnplayr | 152 | UDP_SOCKET: |
1249 | hidnplayr | 153 | |
1514 | hidnplayr | 154 | .LocalPort dw ? ; In INET byte order |
155 | .RemotePort dw ? ; In INET byte order |
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156 | .firstpacket db ? |
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1249 | hidnplayr | 157 | |
158 | .end: |
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1514 | hidnplayr | 159 | end virtual |
1249 | hidnplayr | 160 | |
1514 | hidnplayr | 161 | virtual at IP_SOCKET.end |
1249 | hidnplayr | 162 | |
1514 | hidnplayr | 163 | ICMP_SOCKET: |
164 | |||
165 | .Identifier dw ? ; |
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166 | |||
167 | .end: |
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168 | end virtual |
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169 | |||
170 | |||
1274 | hidnplayr | 171 | struct socket_queue_entry |
1514 | hidnplayr | 172 | ; .owner dd ? |
1274 | hidnplayr | 173 | .data_ptr dd ? |
1514 | hidnplayr | 174 | .buf_ptr dd ? |
1274 | hidnplayr | 175 | .data_size dd ? |
176 | .size: |
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177 | ends |
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178 | |||
1514 | hidnplayr | 179 | |
1249 | hidnplayr | 180 | MAX_backlog equ 20 ; backlog for stream sockets |
181 | SOCKETBUFFSIZE equ 4096 ; in bytes |
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1514 | hidnplayr | 182 | |
1249 | hidnplayr | 183 | SOCKET_QUEUE_SIZE equ 10 ; maximum number ofincoming packets queued for 1 socket |
1514 | hidnplayr | 184 | ; the incoming packet queue for sockets is placed in the socket struct itself, at this location from start |
185 | SOCKET_QUEUE_LOCATION equ SOCKETBUFFSIZE - SOCKET_QUEUE_SIZE*socket_queue_entry.size - queue.data |
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1249 | hidnplayr | 186 | |
1159 | hidnplayr | 187 | uglobal |
1514 | hidnplayr | 188 | net_sockets rd 4 |
1159 | hidnplayr | 189 | last_UDP_port dw ? ; These values give the number of the last used ephemeral port |
190 | last_TCP_port dw ? ; |
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191 | endg |
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192 | |||
193 | |||
1257 | hidnplayr | 194 | ;----------------------------------------------------------------- |
1159 | hidnplayr | 195 | ; |
196 | ; SOCKET_init |
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197 | ; |
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198 | ; - |
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199 | ; |
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200 | ; IN: / |
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201 | ; OUT: / |
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202 | ; |
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1257 | hidnplayr | 203 | ;----------------------------------------------------------------- |
1159 | hidnplayr | 204 | align 4 |
205 | socket_init: |
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206 | |||
1514 | hidnplayr | 207 | xor eax, eax |
208 | mov edi, net_sockets |
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209 | mov ecx, 4 |
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210 | rep stosd |
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1159 | hidnplayr | 211 | |
212 | mov [last_UDP_port], MIN_EPHEMERAL_PORT |
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213 | mov [last_TCP_port], MIN_EPHEMERAL_PORT |
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214 | |||
215 | ret |
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216 | |||
217 | |||
1257 | hidnplayr | 218 | ;----------------------------------------------------------------- |
1159 | hidnplayr | 219 | ; |
220 | ; Socket API (function 74) |
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221 | ; |
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1257 | hidnplayr | 222 | ;----------------------------------------------------------------- |
1159 | hidnplayr | 223 | align 4 |
224 | sys_socket: |
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1514 | hidnplayr | 225 | cmp ebx, 8 ; highest possible number |
1254 | hidnplayr | 226 | jg s_error |
227 | lea ebx, [.table + 4*ebx] |
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228 | jmp dword [ebx] |
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1159 | hidnplayr | 229 | |
1254 | hidnplayr | 230 | .table: |
1514 | hidnplayr | 231 | dd SOCKET_open ; 0 |
232 | dd SOCKET_close ; 1 |
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233 | dd SOCKET_bind ; 2 |
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234 | dd SOCKET_listen ; 3 |
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235 | dd SOCKET_connect ; 4 |
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236 | dd SOCKET_accept ; 5 |
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237 | dd SOCKET_send ; 6 |
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238 | dd SOCKET_receive ; 7 |
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239 | dd SOCKET_get_opt ; 8 |
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240 | ; dd SOCKET_set_opt ; 9 |
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1159 | hidnplayr | 241 | |
1254 | hidnplayr | 242 | |
1185 | hidnplayr | 243 | s_error: |
1514 | hidnplayr | 244 | DEBUGF 1,"socket error\n" |
245 | mov dword [esp+32], -1 |
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1159 | hidnplayr | 246 | |
247 | ret |
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248 | |||
249 | |||
1257 | hidnplayr | 250 | ;----------------------------------------------------------------- |
1159 | hidnplayr | 251 | ; |
252 | ; SOCKET_open |
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253 | ; |
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254 | ; IN: domain in ecx |
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255 | ; type in edx |
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1196 | hidnplayr | 256 | ; protocol in esi |
1159 | hidnplayr | 257 | ; OUT: eax is socket num, -1 on error |
258 | ; |
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1257 | hidnplayr | 259 | ;----------------------------------------------------------------- |
1206 | hidnplayr | 260 | align 4 |
1514 | hidnplayr | 261 | SOCKET_open: |
1159 | hidnplayr | 262 | |
1514 | hidnplayr | 263 | DEBUGF 1,"socket_open: domain: %u, type: %u protocol: %x\n", ecx, edx, esi |
1159 | hidnplayr | 264 | |
1514 | hidnplayr | 265 | call SOCKET_alloc |
1185 | hidnplayr | 266 | jz s_error |
1159 | hidnplayr | 267 | |
1514 | hidnplayr | 268 | mov [eax + SOCKET.Domain], ecx |
269 | mov [eax + SOCKET.Type], edx |
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270 | mov [eax + SOCKET.Protocol], esi |
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1159 | hidnplayr | 271 | |
1514 | hidnplayr | 272 | mov [esp+32], edi |
1318 | hidnplayr | 273 | |
1159 | hidnplayr | 274 | ret |
275 | |||
276 | |||
277 | |||
1257 | hidnplayr | 278 | ;----------------------------------------------------------------- |
1159 | hidnplayr | 279 | ; |
280 | ; SOCKET_bind |
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281 | ; |
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282 | ; IN: socket number in ecx |
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283 | ; pointer to sockaddr struct in edx |
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284 | ; length of that struct in esi |
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285 | ; OUT: 0 on success |
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286 | ; |
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1257 | hidnplayr | 287 | ;----------------------------------------------------------------- |
1206 | hidnplayr | 288 | align 4 |
1514 | hidnplayr | 289 | SOCKET_bind: |
1159 | hidnplayr | 290 | |
1514 | hidnplayr | 291 | DEBUGF 1,"socket_bind: socknum: %u sockaddr: %x, length: %u\n", ecx, edx, esi |
1159 | hidnplayr | 292 | |
1514 | hidnplayr | 293 | call SOCKET_num_to_ptr |
1185 | hidnplayr | 294 | jz s_error |
1159 | hidnplayr | 295 | |
296 | cmp esi, 2 |
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1185 | hidnplayr | 297 | jl s_error |
1159 | hidnplayr | 298 | |
299 | cmp word [edx], AF_INET4 |
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1249 | hidnplayr | 300 | je .af_inet4 |
1159 | hidnplayr | 301 | |
1249 | hidnplayr | 302 | cmp word [edx], AF_UNIX |
303 | je .af_unix |
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304 | |||
305 | jmp s_error |
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306 | |||
307 | .af_unix: |
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308 | |||
309 | ; TODO: write code here |
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310 | |||
1514 | hidnplayr | 311 | mov dword [esp+32], 0 |
1249 | hidnplayr | 312 | ret |
313 | |||
1159 | hidnplayr | 314 | .af_inet4: |
315 | |||
1514 | hidnplayr | 316 | DEBUGF 1,"af_inet4\n" |
317 | |||
1159 | hidnplayr | 318 | cmp esi, 6 |
1185 | hidnplayr | 319 | jl s_error |
1159 | hidnplayr | 320 | |
1514 | hidnplayr | 321 | mov ecx, [eax + SOCKET.Type] |
1249 | hidnplayr | 322 | |
1159 | hidnplayr | 323 | mov bx, word [edx + 2] |
324 | test bx, bx |
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1206 | hidnplayr | 325 | jz .find_free |
1159 | hidnplayr | 326 | |
1514 | hidnplayr | 327 | call SOCKET_check_port |
328 | ; test bx, bx |
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329 | jz s_error |
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1206 | hidnplayr | 330 | jmp .got_port |
1159 | hidnplayr | 331 | |
1249 | hidnplayr | 332 | .find_free: |
1514 | hidnplayr | 333 | call SOCKET_find_port |
334 | ; test bx, bx |
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335 | jz s_error |
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1159 | hidnplayr | 336 | |
1249 | hidnplayr | 337 | .got_port: |
1514 | hidnplayr | 338 | DEBUGF 1,"using local port: %u", bx |
339 | mov word [eax + UDP_SOCKET.LocalPort], bx |
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1159 | hidnplayr | 340 | |
341 | mov ebx, dword [edx + 4] |
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1514 | hidnplayr | 342 | mov dword [eax + IP_SOCKET.LocalIP], ebx |
1159 | hidnplayr | 343 | |
344 | DEBUGF 1,"local ip: %u.%u.%u.%u\n",\ |
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1514 | hidnplayr | 345 | [eax + IP_SOCKET.LocalIP + 0]:1,[eax + IP_SOCKET.LocalIP + 1]:1,\ |
346 | [eax + IP_SOCKET.LocalIP + 2]:1,[eax + IP_SOCKET.LocalIP + 3]:1 |
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1159 | hidnplayr | 347 | |
1514 | hidnplayr | 348 | mov dword [esp+32], 0 |
1159 | hidnplayr | 349 | ret |
350 | |||
351 | |||
352 | |||
353 | |||
1257 | hidnplayr | 354 | ;----------------------------------------------------------------- |
1159 | hidnplayr | 355 | ; |
356 | ; SOCKET_connect |
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357 | ; |
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358 | ; IN: socket number in ecx |
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359 | ; pointer to sockaddr struct in edx |
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360 | ; length of that struct in esi |
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361 | ; OUT: 0 on success |
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362 | ; |
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1257 | hidnplayr | 363 | ;----------------------------------------------------------------- |
1159 | hidnplayr | 364 | align 4 |
1514 | hidnplayr | 365 | SOCKET_connect: |
1159 | hidnplayr | 366 | |
1514 | hidnplayr | 367 | DEBUGF 1,"socket_connect: socknum: %u sockaddr: %x, length: %u\n", ecx, edx, esi |
1159 | hidnplayr | 368 | |
1514 | hidnplayr | 369 | call SOCKET_num_to_ptr |
1185 | hidnplayr | 370 | jz s_error |
1159 | hidnplayr | 371 | |
1254 | hidnplayr | 372 | cmp esi, 8 |
1185 | hidnplayr | 373 | jl s_error |
1159 | hidnplayr | 374 | |
375 | cmp word [edx], AF_INET4 |
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376 | je .af_inet4 |
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377 | |||
1185 | hidnplayr | 378 | jmp s_error |
1159 | hidnplayr | 379 | |
380 | .af_inet4: |
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381 | |||
1514 | hidnplayr | 382 | cmp [eax + SOCKET.Type], IP_PROTO_UDP |
1159 | hidnplayr | 383 | je .udp |
384 | |||
1514 | hidnplayr | 385 | cmp [eax + SOCKET.Type], IP_PROTO_TCP |
1206 | hidnplayr | 386 | je .tcp |
1159 | hidnplayr | 387 | |
1185 | hidnplayr | 388 | jmp s_error |
1159 | hidnplayr | 389 | |
1254 | hidnplayr | 390 | .udp: |
1159 | hidnplayr | 391 | mov bx , word [edx + 2] |
1514 | hidnplayr | 392 | mov word [eax + UDP_SOCKET.RemotePort], bx |
393 | mov [eax + UDP_SOCKET.firstpacket], 0 |
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394 | DEBUGF 1,"remote port: %u ",bx |
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1159 | hidnplayr | 395 | |
396 | mov ebx, dword [edx + 4] |
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1514 | hidnplayr | 397 | mov dword [eax + IP_SOCKET.RemoteIP], ebx |
1159 | hidnplayr | 398 | DEBUGF 1,"remote ip: %u.%u.%u.%u\n",[edx+4]:1,[edx+5]:1,[edx+6]:1,[edx+7]:1 |
399 | |||
1514 | hidnplayr | 400 | mov dword [esp+32], 0 |
1159 | hidnplayr | 401 | ret |
402 | |||
403 | |||
1254 | hidnplayr | 404 | .tcp: |
1514 | hidnplayr | 405 | ; set sequence number |
1159 | hidnplayr | 406 | |
1514 | hidnplayr | 407 | mov ebx, [TCP_sequence_num] |
408 | add [TCP_sequence_num], 6400 |
||
409 | mov [eax + TCP_SOCKET.ISS], ebx |
||
410 | |||
411 | lea ebx, [eax + SOCKET.lock] |
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1281 | hidnplayr | 412 | call wait_mutex |
1159 | hidnplayr | 413 | |
1254 | hidnplayr | 414 | ; fill in remote port and IP |
1159 | hidnplayr | 415 | |
1514 | hidnplayr | 416 | ;;;;;; mov [eax + TCP_SOCKET.wndsizeTimer], 0 ; Reset the window timer. |
417 | |||
1254 | hidnplayr | 418 | mov bx , word [edx + 2] |
1514 | hidnplayr | 419 | mov [eax + TCP_SOCKET.RemotePort], bx |
420 | DEBUGF 1,"remote port: %u ",bx |
||
1159 | hidnplayr | 421 | |
1254 | hidnplayr | 422 | mov ebx, dword [edx + 4] |
1514 | hidnplayr | 423 | mov [eax + IP_SOCKET.RemoteIP], ebx |
1159 | hidnplayr | 424 | |
1254 | hidnplayr | 425 | ; check if local port and IP is ok |
1159 | hidnplayr | 426 | |
1514 | hidnplayr | 427 | cmp [eax + IP_SOCKET.LocalIP], 0 |
1254 | hidnplayr | 428 | jne @f |
1514 | hidnplayr | 429 | push [IP_LIST] ;;;;; device zero = default |
430 | pop [eax + IP_SOCKET.LocalIP] |
||
1254 | hidnplayr | 431 | @@: |
1159 | hidnplayr | 432 | |
1514 | hidnplayr | 433 | cmp [eax + TCP_SOCKET.LocalPort], 0 |
1254 | hidnplayr | 434 | jne @f |
1514 | hidnplayr | 435 | call SOCKET_find_port |
1254 | hidnplayr | 436 | @@: |
1159 | hidnplayr | 437 | |
1514 | hidnplayr | 438 | ; mov [eax + TCP_SOCKET.t_state], TCB_SYN_SENT |
439 | call TCP_output |
||
1159 | hidnplayr | 440 | |
1514 | hidnplayr | 441 | mov [eax + SOCKET.lock], 0 |
1159 | hidnplayr | 442 | |
1514 | hidnplayr | 443 | mov dword [esp+32], 0 ; success! |
1159 | hidnplayr | 444 | ret |
445 | |||
446 | |||
1257 | hidnplayr | 447 | ;----------------------------------------------------------------- |
1159 | hidnplayr | 448 | ; |
449 | ; SOCKET_listen |
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450 | ; |
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451 | ; IN: socket number in ecx |
||
452 | ; backlog in edx |
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453 | ; OUT: eax is socket num, -1 on error |
||
454 | ; |
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1257 | hidnplayr | 455 | ;----------------------------------------------------------------- |
1206 | hidnplayr | 456 | align 4 |
1514 | hidnplayr | 457 | SOCKET_listen: |
1159 | hidnplayr | 458 | |
1514 | hidnplayr | 459 | DEBUGF 1,"Socket_listen: socknum: %u backlog: %u\n", ecx, edx |
1159 | hidnplayr | 460 | |
1514 | hidnplayr | 461 | call SOCKET_num_to_ptr |
1185 | hidnplayr | 462 | jz s_error |
1159 | hidnplayr | 463 | |
1514 | hidnplayr | 464 | cmp word [eax + SOCKET.Domain], AF_INET4 |
1254 | hidnplayr | 465 | jne s_error |
466 | |||
1514 | hidnplayr | 467 | cmp [eax + SOCKET.Type], IP_PROTO_TCP |
1254 | hidnplayr | 468 | jne s_error |
469 | |||
1514 | hidnplayr | 470 | ; TODO: check local port number |
471 | |||
1159 | hidnplayr | 472 | cmp edx, MAX_backlog |
1514 | hidnplayr | 473 | jle .ok |
474 | mov edx, MAX_backlog |
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1159 | hidnplayr | 475 | .ok: |
476 | |||
1514 | hidnplayr | 477 | mov [eax + TCP_SOCKET.backlog], dx |
478 | mov [eax + TCP_SOCKET.t_state], TCB_LISTEN |
||
479 | or [eax + SOCKET.options], SO_ACCEPTCON |
||
1159 | hidnplayr | 480 | |
481 | mov dword [esp+32], 0 |
||
1514 | hidnplayr | 482 | |
1159 | hidnplayr | 483 | ret |
484 | |||
485 | |||
1257 | hidnplayr | 486 | ;----------------------------------------------------------------- |
1159 | hidnplayr | 487 | ; |
488 | ; SOCKET_accept |
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489 | ; |
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490 | ; IN: socket number in ecx |
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491 | ; addr in edx |
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492 | ; addrlen in esi |
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493 | ; OUT: eax is socket num, -1 on error |
||
494 | ; |
||
1257 | hidnplayr | 495 | ;----------------------------------------------------------------- |
1206 | hidnplayr | 496 | align 4 |
1514 | hidnplayr | 497 | SOCKET_accept: |
1159 | hidnplayr | 498 | |
1514 | hidnplayr | 499 | DEBUGF 1,"Socket_accept: socknum: %u sockaddr: %x, length: %u\n", ecx, edx, esi |
1159 | hidnplayr | 500 | |
1514 | hidnplayr | 501 | call SOCKET_num_to_ptr |
1185 | hidnplayr | 502 | jz s_error |
1159 | hidnplayr | 503 | |
1514 | hidnplayr | 504 | cmp word [eax + SOCKET.Domain], AF_INET4 |
1249 | hidnplayr | 505 | je .af_inet4 |
506 | |||
507 | jmp s_error |
||
508 | |||
509 | .af_inet4: |
||
510 | |||
1514 | hidnplayr | 511 | cmp [eax + SOCKET.Type], IP_PROTO_TCP |
1249 | hidnplayr | 512 | je .tcp |
513 | |||
514 | jmp s_error |
||
515 | |||
516 | .tcp: |
||
517 | |||
1514 | hidnplayr | 518 | lea ebx, [eax + SOCKET.lock] |
1256 | clevermous | 519 | call wait_mutex |
1514 | hidnplayr | 520 | |
521 | movzx ebx, [eax + TCP_SOCKET.backlog_cur] |
||
522 | test ebx, ebx |
||
1256 | clevermous | 523 | jz .unlock_err |
1514 | hidnplayr | 524 | |
525 | dec [eax + TCP_SOCKET.backlog_cur] |
||
526 | mov eax, [eax + TCP_SOCKET.end + (ebx-1)*4] |
||
527 | mov [eax + SOCKET.lock], 0 |
||
528 | mov dword [esp+32], 0 |
||
529 | |||
530 | call TCP_output ;;;;; |
||
531 | |||
1159 | hidnplayr | 532 | ret |
1514 | hidnplayr | 533 | |
1256 | clevermous | 534 | .unlock_err: |
1514 | hidnplayr | 535 | mov [eax + SOCKET.lock], 0 |
1256 | clevermous | 536 | jmp s_error |
1159 | hidnplayr | 537 | |
538 | |||
1257 | hidnplayr | 539 | ;----------------------------------------------------------------- |
1159 | hidnplayr | 540 | ; |
541 | ; SOCKET_close |
||
542 | ; |
||
543 | ; IN: socket number in ecx |
||
544 | ; OUT: eax is socket num, -1 on error |
||
545 | ; |
||
1257 | hidnplayr | 546 | ;----------------------------------------------------------------- |
1206 | hidnplayr | 547 | align 4 |
1514 | hidnplayr | 548 | SOCKET_close: |
1159 | hidnplayr | 549 | |
1514 | hidnplayr | 550 | DEBUGF 1,"socket_close: socknum: %u\n", ecx |
1159 | hidnplayr | 551 | |
1514 | hidnplayr | 552 | call SOCKET_num_to_ptr |
1185 | hidnplayr | 553 | jz s_error |
1159 | hidnplayr | 554 | |
1514 | hidnplayr | 555 | cmp [eax + SOCKET.Domain], AF_INET4 |
1249 | hidnplayr | 556 | jne s_error |
1159 | hidnplayr | 557 | |
1514 | hidnplayr | 558 | cmp [eax + SOCKET.Type], IP_PROTO_UDP |
559 | je .free |
||
1159 | hidnplayr | 560 | |
1514 | hidnplayr | 561 | cmp [eax + SOCKET.Type], IP_PROTO_ICMP |
562 | je .free |
||
1159 | hidnplayr | 563 | |
1514 | hidnplayr | 564 | cmp [eax + SOCKET.Type], IP_PROTO_TCP |
1206 | hidnplayr | 565 | je .tcp |
1159 | hidnplayr | 566 | |
1185 | hidnplayr | 567 | jmp s_error |
1159 | hidnplayr | 568 | |
569 | .tcp: |
||
1514 | hidnplayr | 570 | test [eax + TCP_SOCKET.t_state], TCB_SYN_RECEIVED ;;;;;; |
571 | jz .free |
||
1318 | hidnplayr | 572 | |
1514 | hidnplayr | 573 | call TCP_output |
1159 | hidnplayr | 574 | |
1514 | hidnplayr | 575 | mov dword [esp+32], 0 |
1159 | hidnplayr | 576 | |
1318 | hidnplayr | 577 | ret |
1159 | hidnplayr | 578 | |
1514 | hidnplayr | 579 | ; state must be LISTEN, SYN_SENT, CLOSED or maybe even invalid |
580 | ; so, we may destroy the socket |
||
581 | .free: |
||
582 | call SOCKET_free |
||
583 | mov dword [esp+32], 0 |
||
1159 | hidnplayr | 584 | |
585 | ret |
||
586 | |||
587 | |||
1257 | hidnplayr | 588 | ;----------------------------------------------------------------- |
1159 | hidnplayr | 589 | ; |
590 | ; SOCKET_receive |
||
591 | ; |
||
592 | ; IN: socket number in ecx |
||
1249 | hidnplayr | 593 | ; addr to buffer in edx |
594 | ; length of buffer in esi |
||
1159 | hidnplayr | 595 | ; flags in edi |
596 | ; OUT: eax is number of bytes copied, -1 on error |
||
597 | ; |
||
1257 | hidnplayr | 598 | ;----------------------------------------------------------------- |
1206 | hidnplayr | 599 | align 4 |
1514 | hidnplayr | 600 | SOCKET_receive: |
1159 | hidnplayr | 601 | |
1514 | hidnplayr | 602 | DEBUGF 1,"socket_receive: socknum: %u bufaddr: %x, buflength: %u, flags: %x\n", ecx, edx, esi, edi |
603 | |||
604 | call SOCKET_num_to_ptr |
||
1185 | hidnplayr | 605 | jz s_error |
1159 | hidnplayr | 606 | |
1281 | hidnplayr | 607 | mov ebx, esi |
1514 | hidnplayr | 608 | get_from_queue (eax + SOCKET_QUEUE_LOCATION),\ |
609 | SOCKET_QUEUE_SIZE,\ |
||
610 | socket_queue_entry.size,\ |
||
611 | s_error |
||
612 | ; destroys esi and ecx |
||
1281 | hidnplayr | 613 | |
1514 | hidnplayr | 614 | mov edi, edx ; addr to buffer |
1159 | hidnplayr | 615 | |
1249 | hidnplayr | 616 | mov ecx, [esi + socket_queue_entry.data_size] |
617 | DEBUGF 1,"Got %u bytes of data\n", ecx |
||
1159 | hidnplayr | 618 | |
1281 | hidnplayr | 619 | cmp ecx, ebx |
1249 | hidnplayr | 620 | jle .large_enough |
621 | DEBUGF 1,"Buffer too small...\n" |
||
622 | jmp s_error |
||
1514 | hidnplayr | 623 | |
1249 | hidnplayr | 624 | .large_enough: |
1514 | hidnplayr | 625 | push [esi + socket_queue_entry.buf_ptr] ; save the buffer addr so we can clear it later |
626 | mov esi, [esi + socket_queue_entry.data_ptr] |
||
1249 | hidnplayr | 627 | DEBUGF 1,"Source buffer: %x, real addr: %x\n", [esp], esi |
1514 | hidnplayr | 628 | mov dword[esp+32+4], ecx ; return number of bytes copied in ebx |
1159 | hidnplayr | 629 | |
1514 | hidnplayr | 630 | ; copy the data |
1249 | hidnplayr | 631 | shr ecx, 1 |
632 | jnc .nb |
||
633 | movsb |
||
634 | .nb: shr ecx, 1 |
||
635 | jnc .nw |
||
636 | movsw |
||
1274 | hidnplayr | 637 | .nw: test ecx, ecx |
638 | jz .nd |
||
639 | rep movsd |
||
640 | .nd: |
||
1514 | hidnplayr | 641 | ; remove the packet ;;; TODO: only if it is empty!! |
1159 | hidnplayr | 642 | |
1514 | hidnplayr | 643 | ;;;; call TCP_output ; only if it is tcp |
1159 | hidnplayr | 644 | |
1514 | hidnplayr | 645 | call kernel_free |
646 | |||
1159 | hidnplayr | 647 | ret |
648 | |||
649 | |||
1257 | hidnplayr | 650 | ;----------------------------------------------------------------- |
1159 | hidnplayr | 651 | ; |
652 | ; SOCKET_send |
||
653 | ; |
||
654 | ; |
||
655 | ; IN: socket number in ecx |
||
1206 | hidnplayr | 656 | ; pointer to data in edx |
657 | ; datalength in esi |
||
1159 | hidnplayr | 658 | ; flags in edi |
659 | ; OUT: -1 on error |
||
660 | ; |
||
1257 | hidnplayr | 661 | ;----------------------------------------------------------------- |
1206 | hidnplayr | 662 | align 4 |
1514 | hidnplayr | 663 | SOCKET_send: |
1159 | hidnplayr | 664 | |
1514 | hidnplayr | 665 | DEBUGF 1,"socket_send: socknum: %u sockaddr: %x, length: %u, flags: %x\n", ecx, edx, esi, edi |
1159 | hidnplayr | 666 | |
1514 | hidnplayr | 667 | call SOCKET_num_to_ptr |
1185 | hidnplayr | 668 | jz s_error |
1159 | hidnplayr | 669 | |
1514 | hidnplayr | 670 | cmp word [eax + SOCKET.Domain], AF_INET4 |
1206 | hidnplayr | 671 | je .af_inet4 |
672 | |||
673 | jmp s_error |
||
674 | |||
675 | .af_inet4: |
||
1514 | hidnplayr | 676 | DEBUGF 1,"af_inet4\n" |
1206 | hidnplayr | 677 | |
1514 | hidnplayr | 678 | cmp [eax + SOCKET.Type], IP_PROTO_TCP |
1249 | hidnplayr | 679 | je .tcp |
1159 | hidnplayr | 680 | |
1514 | hidnplayr | 681 | cmp [eax + SOCKET.Type], IP_PROTO_UDP |
1159 | hidnplayr | 682 | je .udp |
683 | |||
1185 | hidnplayr | 684 | jmp s_error |
1159 | hidnplayr | 685 | |
686 | .udp: |
||
1514 | hidnplayr | 687 | DEBUGF 1,"type: UDP\n" |
1159 | hidnplayr | 688 | |
1514 | hidnplayr | 689 | ; check if local port is valid |
690 | cmp [eax + UDP_SOCKET.LocalPort], 0 |
||
1249 | hidnplayr | 691 | jne @f |
1206 | hidnplayr | 692 | |
1514 | hidnplayr | 693 | call SOCKET_find_port |
694 | jz s_error |
||
1206 | hidnplayr | 695 | |
1514 | hidnplayr | 696 | ; Now, send the packet |
1249 | hidnplayr | 697 | @@: |
1159 | hidnplayr | 698 | mov ecx, esi |
699 | mov esi, edx |
||
700 | |||
1514 | hidnplayr | 701 | call UDP_output |
1159 | hidnplayr | 702 | |
1514 | hidnplayr | 703 | mov dword [esp+32], 0 |
1159 | hidnplayr | 704 | ret |
705 | |||
1249 | hidnplayr | 706 | .tcp: |
1514 | hidnplayr | 707 | DEBUGF 1,"type: TCP\n" |
1159 | hidnplayr | 708 | |
1514 | hidnplayr | 709 | ; check if local port is valid |
710 | cmp [eax + TCP_SOCKET.LocalPort], 0 |
||
1254 | hidnplayr | 711 | jne @f |
712 | |||
1514 | hidnplayr | 713 | call SOCKET_find_port |
714 | jz s_error |
||
1254 | hidnplayr | 715 | |
716 | @@: |
||
1514 | hidnplayr | 717 | ;;;; TODO: queue the data |
1254 | hidnplayr | 718 | |
1514 | hidnplayr | 719 | call TCP_output |
1254 | hidnplayr | 720 | |
1249 | hidnplayr | 721 | mov [esp+32], eax |
722 | ret |
||
1159 | hidnplayr | 723 | |
1249 | hidnplayr | 724 | |
725 | |||
726 | |||
1257 | hidnplayr | 727 | ;----------------------------------------------------------------- |
1256 | clevermous | 728 | ; |
1257 | hidnplayr | 729 | ; SOCKET_get_options |
1256 | clevermous | 730 | ; |
1514 | hidnplayr | 731 | ; IN: ecx = socket number |
732 | ; edx = pointer to the options: |
||
1257 | hidnplayr | 733 | ; dd level, optname, optval, optlen |
1256 | clevermous | 734 | ; OUT: -1 on error |
735 | ; |
||
736 | ; At moment, uses only pseudo-optname -2 for get last_ack_number for TCP. |
||
737 | ; TODO: find best way to notify that send()'ed data were acknowledged |
||
1299 | clevermous | 738 | ; Also pseudo-optname -3 is valid and returns socket state, one of TCB_*. |
1256 | clevermous | 739 | ; |
1257 | hidnplayr | 740 | ;----------------------------------------------------------------- |
741 | align 4 |
||
1514 | hidnplayr | 742 | SOCKET_get_opt: |
1257 | hidnplayr | 743 | |
1514 | hidnplayr | 744 | DEBUGF 1,"socket_get_opt\n" |
745 | |||
746 | call SOCKET_num_to_ptr |
||
747 | jz s_error |
||
748 | |||
1256 | clevermous | 749 | cmp dword [edx], IP_PROTO_TCP |
1514 | hidnplayr | 750 | jnz s_error |
1256 | clevermous | 751 | cmp dword [edx+4], -2 |
1299 | clevermous | 752 | jz @f |
753 | cmp dword [edx+4], -3 |
||
1514 | hidnplayr | 754 | jnz s_error |
1299 | clevermous | 755 | @@: |
1514 | hidnplayr | 756 | ; mov eax, [edx+12] |
757 | ; test eax, eax |
||
758 | ; jz .fail |
||
759 | ; cmp dword [eax], 4 |
||
760 | ; mov dword [eax], 4 |
||
761 | ; jb .fail |
||
762 | ; stdcall net_socket_num_to_addr, ecx |
||
763 | ; test eax, eax |
||
764 | ; jz .fail |
||
765 | ; ; todo: check that eax is really TCP socket |
||
766 | ; mov ecx, [eax + TCP_SOCKET.last_ack_number] |
||
767 | ; cmp dword [edx+4], -2 |
||
768 | ; jz @f |
||
769 | ; mov ecx, [eax + TCP_SOCKET.state] |
||
1299 | clevermous | 770 | @@: |
1256 | clevermous | 771 | mov eax, [edx+8] |
772 | test eax, eax |
||
773 | jz @f |
||
774 | mov [eax], ecx |
||
775 | @@: |
||
1257 | hidnplayr | 776 | mov dword [esp+32], 0 |
1256 | clevermous | 777 | ret |
1159 | hidnplayr | 778 | |
779 | |||
1257 | hidnplayr | 780 | ;----------------------------------------------------------------- |
1206 | hidnplayr | 781 | ; |
1514 | hidnplayr | 782 | ; SOCKET_find_port |
1206 | hidnplayr | 783 | ; |
1514 | hidnplayr | 784 | ; Fills in the local port number for TCP and UDP sockets |
785 | ; This procedure always works because the number of sockets is |
||
786 | ; limited to a smaller number then the number of possible ports |
||
1206 | hidnplayr | 787 | ; |
1514 | hidnplayr | 788 | ; IN: eax = socket pointer |
789 | ; OUT: / |
||
1206 | hidnplayr | 790 | ; |
1257 | hidnplayr | 791 | ;----------------------------------------------------------------- |
1206 | hidnplayr | 792 | align 4 |
1514 | hidnplayr | 793 | SOCKET_find_port: |
1159 | hidnplayr | 794 | |
1514 | hidnplayr | 795 | DEBUGF 1,"socket_find_free_port\n" |
1159 | hidnplayr | 796 | |
1514 | hidnplayr | 797 | push ebx esi ecx |
798 | |||
799 | cmp [eax + SOCKET.Type], IP_PROTO_UDP |
||
1206 | hidnplayr | 800 | je .udp |
1159 | hidnplayr | 801 | |
1514 | hidnplayr | 802 | cmp [eax + SOCKET.Type], IP_PROTO_TCP |
1206 | hidnplayr | 803 | je .tcp |
1159 | hidnplayr | 804 | |
1514 | hidnplayr | 805 | jmp .error |
806 | |||
807 | .done: |
||
808 | mov [eax + UDP_SOCKET.LocalPort], bx |
||
809 | .error: |
||
810 | pop ecx esi ebx |
||
811 | ret |
||
812 | |||
1206 | hidnplayr | 813 | .udp: |
814 | mov bx, [last_UDP_port] |
||
1514 | hidnplayr | 815 | call .findit |
816 | mov [last_UDP_port], bx |
||
817 | jmp .done |
||
1206 | hidnplayr | 818 | |
819 | .tcp: |
||
820 | mov bx, [last_TCP_port] |
||
1514 | hidnplayr | 821 | call .findit |
822 | mov [last_TCP_port], bx |
||
823 | jmp .done |
||
1206 | hidnplayr | 824 | |
825 | |||
1514 | hidnplayr | 826 | .restart: |
827 | mov bx, MIN_EPHEMERAL_PORT |
||
828 | .findit: |
||
1206 | hidnplayr | 829 | inc bx |
830 | |||
831 | cmp bx, MAX_EPHEMERAL_PORT |
||
1514 | hidnplayr | 832 | jz .restart |
1206 | hidnplayr | 833 | |
1514 | hidnplayr | 834 | call SOCKET_check_port |
835 | jz .findit |
||
1206 | hidnplayr | 836 | |
837 | ret |
||
838 | |||
1257 | hidnplayr | 839 | |
840 | |||
841 | ;----------------------------------------------------------------- |
||
1206 | hidnplayr | 842 | ; |
1514 | hidnplayr | 843 | ; SOCKET_check_port |
1206 | hidnplayr | 844 | ; |
1514 | hidnplayr | 845 | ; Checks if a local port number is unused |
846 | ; If the proposed port number is unused, it is filled in in the socket structure |
||
1206 | hidnplayr | 847 | ; |
1514 | hidnplayr | 848 | ; IN: eax = socket ptr (to find out if its a TCP/UDP socket) |
849 | ; bx = proposed socket number |
||
1206 | hidnplayr | 850 | ; |
1514 | hidnplayr | 851 | ; OUT: ZF = cleared on error |
852 | ; |
||
1257 | hidnplayr | 853 | ;----------------------------------------------------------------- |
1206 | hidnplayr | 854 | align 4 |
1514 | hidnplayr | 855 | SOCKET_check_port: |
856 | |||
857 | DEBUGF 1,"socket_check_port\n" |
||
858 | |||
859 | mov ecx, [eax + SOCKET.Type] |
||
1206 | hidnplayr | 860 | mov esi, net_sockets |
861 | |||
862 | .next_socket: |
||
1514 | hidnplayr | 863 | mov esi, [esi + SOCKET.NextPtr] |
1206 | hidnplayr | 864 | or esi, esi |
865 | jz .port_ok |
||
866 | |||
1514 | hidnplayr | 867 | cmp [esi + SOCKET.Type], ecx |
1206 | hidnplayr | 868 | jne .next_socket |
869 | |||
1514 | hidnplayr | 870 | cmp [esi + UDP_SOCKET.LocalPort], bx |
1206 | hidnplayr | 871 | jne .next_socket |
872 | |||
1514 | hidnplayr | 873 | DEBUGF 1,"local port %u already in use\n", bx |
874 | ret |
||
1206 | hidnplayr | 875 | |
876 | .port_ok: |
||
1514 | hidnplayr | 877 | mov [eax + UDP_SOCKET.LocalPort], bx |
878 | or bx, bx ; set the zero-flag |
||
879 | |||
1206 | hidnplayr | 880 | ret |
881 | |||
882 | |||
1257 | hidnplayr | 883 | |
884 | ;----------------------------------------------------------------- |
||
1206 | hidnplayr | 885 | ; |
1514 | hidnplayr | 886 | ; SOCKET_input |
1206 | hidnplayr | 887 | ; |
1249 | hidnplayr | 888 | ; Updates a socket with received data |
1206 | hidnplayr | 889 | ; |
1514 | hidnplayr | 890 | ; Note: the mutex should already be set ! |
1206 | hidnplayr | 891 | ; |
1249 | hidnplayr | 892 | ; IN: eax = socket ptr |
1514 | hidnplayr | 893 | ; ebx = pointer to device struct |
894 | ; ecx = data size |
||
895 | ; esi = ptr to data |
||
896 | ; [esp] = ptr to buf |
||
897 | ; [esp + 4] = buf size |
||
1249 | hidnplayr | 898 | ; |
1514 | hidnplayr | 899 | ; OUT: / |
1206 | hidnplayr | 900 | ; |
1257 | hidnplayr | 901 | ;----------------------------------------------------------------- |
1206 | hidnplayr | 902 | align 4 |
1514 | hidnplayr | 903 | SOCKET_input: |
1206 | hidnplayr | 904 | |
1514 | hidnplayr | 905 | DEBUGF 1,"socket_input: socket=%x, data=%x size=%u\n", eax, esi, ecx |
1206 | hidnplayr | 906 | |
1514 | hidnplayr | 907 | mov dword[esp+4], ecx |
908 | push esi |
||
1249 | hidnplayr | 909 | mov esi, esp |
1514 | hidnplayr | 910 | |
911 | add_to_queue (eax + SOCKET_QUEUE_LOCATION),\ |
||
912 | SOCKET_QUEUE_SIZE,\ |
||
913 | socket_queue_entry.size,\ |
||
914 | SOCKET_input.full |
||
915 | |||
1249 | hidnplayr | 916 | DEBUGF 1,"Queued packet successfully\n" |
1257 | hidnplayr | 917 | add esp, socket_queue_entry.size |
1514 | hidnplayr | 918 | mov [eax + SOCKET.lock], 0 |
919 | jmp SOCKET_notify_owner |
||
1206 | hidnplayr | 920 | |
1514 | hidnplayr | 921 | .full: |
922 | DEBUGF 2,"Socket %x is full!\n", eax |
||
923 | mov [eax + SOCKET.lock], 0 |
||
924 | call kernel_free |
||
925 | add esp, 8 |
||
1206 | hidnplayr | 926 | |
1514 | hidnplayr | 927 | ret |
928 | |||
929 | ;----------------------------------------------------------------- |
||
930 | ; |
||
931 | ; SOCKET_notify_owner |
||
932 | ; |
||
933 | ; notify's the owner of a socket that something happened |
||
934 | ; |
||
935 | ; IN: eax = socket ptr |
||
936 | ; OUT: / |
||
937 | ; |
||
938 | ;----------------------------------------------------------------- |
||
939 | align 4 |
||
940 | SOCKET_notify_owner: |
||
941 | |||
942 | DEBUGF 1,"socket_notify_owner\n" |
||
943 | |||
944 | call SOCKET_check |
||
945 | jz .error |
||
946 | |||
947 | push ecx eax esi |
||
948 | |||
949 | ; socket exists, now try to flag an event to the application |
||
950 | |||
951 | mov eax, [eax + SOCKET.PID] |
||
1206 | hidnplayr | 952 | mov ecx, 1 |
953 | mov esi, TASK_DATA + TASKDATA.pid |
||
954 | |||
955 | .next_pid: |
||
1514 | hidnplayr | 956 | cmp [esi], eax |
1206 | hidnplayr | 957 | je .found_pid |
958 | inc ecx |
||
959 | add esi, 0x20 |
||
960 | cmp ecx, [TASK_COUNT] |
||
961 | jbe .next_pid |
||
962 | |||
1514 | hidnplayr | 963 | ; PID not found, TODO: close socket! |
964 | |||
965 | jmp .error2 |
||
966 | |||
1206 | hidnplayr | 967 | .found_pid: |
968 | shl ecx, 8 |
||
1514 | hidnplayr | 969 | or [ecx + SLOT_BASE + APPDATA.event_mask], EVENT_NETWORK |
1206 | hidnplayr | 970 | mov [check_idle_semaphore], 200 |
971 | |||
1514 | hidnplayr | 972 | DEBUGF 1,"owner notified\n" |
973 | |||
974 | .error2: |
||
975 | pop esi eax ecx |
||
976 | .error: |
||
977 | |||
1206 | hidnplayr | 978 | ret |
979 | |||
980 | |||
1514 | hidnplayr | 981 | ;-------------------------------------------------------------------- |
982 | ; |
||
983 | ; SOCKET_alloc |
||
984 | ; |
||
1159 | hidnplayr | 985 | ; Allocate memory for socket data and put new socket into the list |
986 | ; Newly created socket is initialized with calling PID and number and |
||
987 | ; put into beginning of list (which is a fastest way). |
||
988 | ; |
||
1514 | hidnplayr | 989 | ; IN: / |
990 | ; OUT: eax = 0 on error, socket ptr otherwise |
||
991 | ; edi = socket number |
||
992 | ; ZF = cleared on error |
||
1159 | hidnplayr | 993 | ; |
1514 | hidnplayr | 994 | ;-------------------------------------------------------------------- |
995 | align 4 |
||
996 | SOCKET_alloc: |
||
997 | |||
998 | push ecx ebx |
||
999 | |||
1159 | hidnplayr | 1000 | stdcall kernel_alloc, SOCKETBUFFSIZE |
1514 | hidnplayr | 1001 | DEBUGF 1, "socket_alloc: %x ", eax |
1159 | hidnplayr | 1002 | or eax, eax |
1003 | jz .exit |
||
1004 | |||
1514 | hidnplayr | 1005 | ; zero-initialize allocated memory |
1006 | push eax edi |
||
1159 | hidnplayr | 1007 | mov edi, eax |
1008 | mov ecx, SOCKETBUFFSIZE / 4 |
||
1009 | xor eax, eax |
||
1010 | rep stosd |
||
1514 | hidnplayr | 1011 | pop edi eax |
1159 | hidnplayr | 1012 | |
1257 | hidnplayr | 1013 | init_queue (eax + SOCKET_QUEUE_LOCATION) |
1249 | hidnplayr | 1014 | |
1514 | hidnplayr | 1015 | ; find first free socket number and use it |
1159 | hidnplayr | 1016 | |
1017 | mov ebx, net_sockets |
||
1018 | xor ecx, ecx |
||
1019 | .next_socket_number: |
||
1020 | inc ecx |
||
1021 | .next_socket: |
||
1514 | hidnplayr | 1022 | mov ebx, [ebx + SOCKET.NextPtr] |
1159 | hidnplayr | 1023 | or ebx, ebx |
1514 | hidnplayr | 1024 | jz .last_socket |
1025 | cmp [ebx + SOCKET.Number], ecx |
||
1159 | hidnplayr | 1026 | jne .next_socket |
1027 | mov ebx, net_sockets |
||
1028 | jmp .next_socket_number |
||
1029 | |||
1514 | hidnplayr | 1030 | .last_socket: |
1031 | mov [eax + SOCKET.Number], ecx |
||
1159 | hidnplayr | 1032 | |
1514 | hidnplayr | 1033 | DEBUGF 1, "(number: %u)\n", ecx |
1034 | |||
1035 | ; Fill in PID |
||
1036 | mov ebx, [TASK_BASE] |
||
1037 | mov ebx, [ebx + TASKDATA.pid] |
||
1038 | |||
1039 | mov [eax + SOCKET.PID], ebx |
||
1040 | |||
1041 | ; add socket to the list by changing pointers |
||
1042 | |||
1043 | mov ebx, [net_sockets + SOCKET.NextPtr] |
||
1044 | |||
1045 | mov [eax + SOCKET.PrevPtr], net_sockets |
||
1046 | mov [eax + SOCKET.NextPtr], ebx |
||
1047 | |||
1048 | or ebx, ebx |
||
1049 | jz @f |
||
1050 | add ebx, SOCKET.lock ; lock the next socket |
||
1051 | call wait_mutex |
||
1052 | sub ebx, SOCKET.lock |
||
1053 | mov [ebx + SOCKET.PrevPtr], eax |
||
1054 | mov [ebx + SOCKET.lock], 0 |
||
1055 | @@: |
||
1056 | |||
1057 | mov [net_sockets + SOCKET.NextPtr], eax |
||
1058 | |||
1059 | mov edi, ecx |
||
1060 | or eax, eax ; used to clear zero flag |
||
1159 | hidnplayr | 1061 | .exit: |
1514 | hidnplayr | 1062 | pop ebx ecx |
1063 | |||
1159 | hidnplayr | 1064 | ret |
1065 | |||
1514 | hidnplayr | 1066 | |
1067 | ;---------------------------------------------------- |
||
1159 | hidnplayr | 1068 | ; |
1514 | hidnplayr | 1069 | ; SOCKET_free |
1159 | hidnplayr | 1070 | ; |
1514 | hidnplayr | 1071 | ; Free socket data memory and remove socket from the list |
1072 | ; |
||
1073 | ; IN: eax = socket ptr |
||
1074 | ; OUT: / |
||
1075 | ; |
||
1076 | ;---------------------------------------------------- |
||
1077 | align 4 |
||
1078 | SOCKET_free: |
||
1159 | hidnplayr | 1079 | |
1514 | hidnplayr | 1080 | DEBUGF 1, "socket_free: %x\n", eax |
1081 | |||
1082 | call SOCKET_check |
||
1159 | hidnplayr | 1083 | jz .error |
1084 | |||
1514 | hidnplayr | 1085 | push ebx |
1086 | lea ebx, [eax + SOCKET.lock] |
||
1087 | call wait_mutex |
||
1088 | |||
1089 | DEBUGF 1, "freeing socket..\n" |
||
1090 | |||
1091 | push eax ; this will be passed to kernel_free |
||
1092 | mov ebx, [eax + SOCKET.NextPtr] |
||
1093 | mov eax, [eax + SOCKET.PrevPtr] |
||
1094 | |||
1095 | DEBUGF 1, "linking socket %x to socket %x\n", eax, ebx |
||
1096 | |||
1097 | test eax, eax |
||
1159 | hidnplayr | 1098 | jz @f |
1514 | hidnplayr | 1099 | mov [eax + SOCKET.NextPtr], ebx |
1100 | @@: |
||
1159 | hidnplayr | 1101 | |
1514 | hidnplayr | 1102 | test ebx, ebx |
1103 | jz @f |
||
1104 | mov [ebx + SOCKET.PrevPtr], eax |
||
1105 | @@: |
||
1249 | hidnplayr | 1106 | |
1514 | hidnplayr | 1107 | call kernel_free |
1108 | pop ebx |
||
1159 | hidnplayr | 1109 | |
1514 | hidnplayr | 1110 | DEBUGF 1, "socket is gone!\n" |
1111 | |||
1159 | hidnplayr | 1112 | .error: |
1113 | ret |
||
1114 | |||
1514 | hidnplayr | 1115 | |
1116 | ;--------------------------------------------------- |
||
1117 | ; |
||
1118 | ; SOCKET_num_to_ptr |
||
1119 | ; |
||
1159 | hidnplayr | 1120 | ; Get socket structure address by its number |
1121 | ; |
||
1514 | hidnplayr | 1122 | ; IN: ecx = socket number |
1123 | ; OUT: ecx = 0 on error, socket ptr otherwise |
||
1124 | ; ZF = set on error |
||
1159 | hidnplayr | 1125 | ; |
1514 | hidnplayr | 1126 | ;--------------------------------------------------- |
1127 | align 4 |
||
1128 | SOCKET_num_to_ptr: |
||
1159 | hidnplayr | 1129 | |
1514 | hidnplayr | 1130 | DEBUGF 1,"socket_num_to_ptr: %u ", ecx |
1131 | |||
1132 | mov eax, net_sockets |
||
1133 | |||
1159 | hidnplayr | 1134 | .next_socket: |
1514 | hidnplayr | 1135 | mov eax, [eax + SOCKET.NextPtr] |
1136 | or eax, eax |
||
1159 | hidnplayr | 1137 | jz .error |
1514 | hidnplayr | 1138 | cmp [eax + SOCKET.Number], ecx |
1159 | hidnplayr | 1139 | jne .next_socket |
1140 | |||
1514 | hidnplayr | 1141 | test eax, eax |
1159 | hidnplayr | 1142 | |
1514 | hidnplayr | 1143 | DEBUGF 1,"(%x)\n", eax |
1159 | hidnplayr | 1144 | .error: |
1145 | ret |
||
1146 | |||
1514 | hidnplayr | 1147 | |
1148 | ;--------------------------------------------------- |
||
1159 | hidnplayr | 1149 | ; |
1514 | hidnplayr | 1150 | ; SOCKET_ptr_to_num |
1159 | hidnplayr | 1151 | ; |
1514 | hidnplayr | 1152 | ; Get socket number by its address |
1153 | ; |
||
1154 | ; IN: eax = socket ptr |
||
1155 | ; OUT: eax = 0 on error, socket num otherwise |
||
1156 | ; ZF = set on error |
||
1157 | ; |
||
1158 | ;--------------------------------------------------- |
||
1159 | align 4 |
||
1160 | SOCKET_ptr_to_num: |
||
1161 | |||
1162 | DEBUGF 1,"socket_ptr_to_num: %x ", eax |
||
1163 | |||
1164 | call SOCKET_check |
||
1159 | hidnplayr | 1165 | jz .error |
1166 | |||
1514 | hidnplayr | 1167 | mov eax, [eax + SOCKET.Number] |
1168 | |||
1169 | DEBUGF 1,"(%u)\n", eax |
||
1170 | |||
1171 | .error: |
||
1172 | ret |
||
1173 | |||
1174 | |||
1175 | ;--------------------------------------------------- |
||
1176 | ; |
||
1177 | ; SOCKET_check |
||
1178 | ; |
||
1179 | ; checks if the given value is really a socket ptr |
||
1180 | ; |
||
1181 | ; IN: eax = socket ptr |
||
1182 | ; OUT: eax = 0 on error, unchanged otherwise |
||
1183 | ; ZF = set on error |
||
1184 | ; |
||
1185 | ;--------------------------------------------------- |
||
1186 | align 4 |
||
1187 | SOCKET_check: |
||
1188 | |||
1189 | DEBUGF 1,"socket_check\n" |
||
1190 | |||
1191 | push ebx |
||
1159 | hidnplayr | 1192 | mov ebx, net_sockets |
1514 | hidnplayr | 1193 | |
1159 | hidnplayr | 1194 | .next_socket: |
1514 | hidnplayr | 1195 | mov ebx, [ebx + SOCKET.NextPtr] |
1159 | hidnplayr | 1196 | or ebx, ebx |
1514 | hidnplayr | 1197 | jz .done |
1159 | hidnplayr | 1198 | cmp ebx, eax |
1514 | hidnplayr | 1199 | jnz .next_socket |
1159 | hidnplayr | 1200 | |
1514 | hidnplayr | 1201 | .done: |
1202 | mov eax, ebx |
||
1203 | test eax, eax |
||
1204 | pop ebx |
||
1205 | |||
1159 | hidnplayr | 1206 | ret |
1207 | |||
1514 | hidnplayr | 1208 | |
1209 | |||
1210 | ;--------------------------------------------------- |
||
1211 | ; |
||
1212 | ; SOCKET_check_owner |
||
1213 | ; |
||
1214 | ; checks if the caller application owns the socket |
||
1215 | ; |
||
1216 | ; IN: eax = socket ptr |
||
1217 | ; OUT: ZF = true/false |
||
1218 | ; |
||
1219 | ;--------------------------------------------------- |
||
1220 | align 4 |
||
1221 | SOCKET_check_owner: |
||
1222 | |||
1223 | DEBUGF 1,"socket_check_owner\n" |
||
1224 | |||
1225 | push ebx |
||
1226 | mov ebx, [TASK_BASE] |
||
1227 | mov ebx, [ecx + TASKDATA.pid] |
||
1228 | cmp [eax + SOCKET.PID], ebx |
||
1229 | pop ebx |
||
1230 | |||
1159 | hidnplayr | 1231 | ret |
1514 | hidnplayr | 1232 | |
1233 | |||
1234 | |||
1235 | |||
1236 | ;--------------------------------------------------- |
||
1237 | ; |
||
1238 | ; SOCKET_process_end |
||
1239 | ; |
||
1240 | ; Kernel calls this function when a certain process ends |
||
1241 | ; This function will check if the process had any open sockets |
||
1242 | ; And update them accordingly |
||
1243 | ; |
||
1244 | ; IN: eax = pid |
||
1245 | ; OUT: / |
||
1246 | ; |
||
1247 | ;------------------------------------------------------ |
||
1248 | align 4 |
||
1249 | SOCKET_process_end: |
||
1250 | |||
1251 | DEBUGF 1,"socket_process_end: %x\n", eax |
||
1252 | |||
1253 | push ebx |
||
1254 | mov ebx, net_sockets |
||
1255 | |||
1256 | .next_socket: |
||
1257 | |||
1258 | mov ebx, [ebx + SOCKET.NextPtr] |
||
1259 | .test_socket: |
||
1260 | test ebx, ebx |
||
1261 | jz .done |
||
1262 | |||
1263 | cmp [ebx + SOCKET.PID], eax |
||
1264 | jne .next_socket |
||
1265 | |||
1266 | DEBUGF 1,"closing socket %x", eax, ebx |
||
1267 | |||
1268 | mov [ebx + SOCKET.PID], 0 |
||
1269 | |||
1270 | cmp [ebx + SOCKET.Type], IP_PROTO_UDP |
||
1271 | je .udp |
||
1272 | |||
1273 | cmp [ebx + SOCKET.Type], IP_PROTO_TCP |
||
1274 | je .tcp |
||
1275 | |||
1276 | jmp .next_socket ; kill all sockets for given PID |
||
1277 | |||
1278 | .udp: |
||
1279 | mov eax, ebx |
||
1280 | mov ebx, [ebx + SOCKET.NextPtr] |
||
1281 | call SOCKET_free |
||
1282 | jmp .test_socket |
||
1283 | |||
1284 | .tcp: |
||
1285 | |||
1286 | jmp .next_socket |
||
1287 | |||
1288 | .done: |
||
1289 | pop ebx |
||
1290 | |||
1291 | ret |