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