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| 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| 2 | ;; ;; |
2 | ;; ;; |
| 3 | ;; Copyright (C) KolibriOS team 2004-2008. All rights reserved. ;; |
3 | ;; Copyright (C) KolibriOS team 2004-2009. All rights reserved. ;; |
| 4 | ;; Distributed under terms of the GNU General Public License ;; |
4 | ;; Distributed under terms of the GNU General Public License ;; |
| 5 | ;; ;; |
5 | ;; ;; |
| 6 | ;; UDP.INC ;; |
6 | ;; UDP.INC ;; |
| 7 | ;; ;; |
7 | ;; ;; |
| 8 | ;; Part of the tcp/ip network stack for KolibriOS ;; |
8 | ;; Part of the tcp/ip network stack for KolibriOS ;; |
| Line 71... | Line 71... | ||
| 71 | ; pointer to UDP Packet data in edx |
71 | ; pointer to UDP Packet data in edx |
| 72 | ; OUT: / |
72 | ; OUT: / |
| 73 | ; |
73 | ; |
| 74 | ;----------------------------------------------------------------- |
74 | ;----------------------------------------------------------------- |
| Line 75... | Line 75... | ||
| 75 | 75 | ||
| Line 76... | Line 76... | ||
| 76 | UDP_Handler: |
76 | UDP_handler: |
| 77 | 77 | ||
| Line 78... | Line 78... | ||
| 78 | DEBUGF 1,"UDP_Handler\n" |
78 | DEBUGF 1,"UDP_Handler\n" |
| Line 108... | Line 108... | ||
| 108 | jne .try_more ; Quit if the source IP is not valid, check for more sockets with this IP/PORT combination |
108 | jne .try_more ; Quit if the source IP is not valid, check for more sockets with this IP/PORT combination |
| Line 109... | Line 109... | ||
| 109 | 109 | ||
| 110 | @@: |
110 | @@: |
| Line 111... | Line -... | ||
| 111 | DEBUGF 1,"Found valid UDP packet for socket %x\n", esi |
- | |
| 112 | 111 | DEBUGF 1,"Found valid UDP packet for socket %x\n", esi |
|
| 113 | 112 | ||
| Line 114... | Line 113... | ||
| 114 | ; sub ecx, UDP_Packet.Data ; get # of bytes in ecx |
113 | ; sub ecx, UDP_Packet.Data ; get # of bytes in ecx |
| 115 | ; mov eax, ecx |
114 | ; mov eax, ecx |
| Line 197... | Line 196... | ||
| 197 | ; Note: UDP works only on top of IP protocol :) |
196 | ; Note: UDP works only on top of IP protocol :) |
| 198 | ; |
197 | ; |
| 199 | ; IN: eax = dest ip |
198 | ; IN: eax = dest ip |
| 200 | ; ebx = source ip |
199 | ; ebx = source ip |
| 201 | ; ecx = data length |
200 | ; ecx = data length |
| 202 | ; edx = remote port shl 16 + local port |
201 | ; edx = remote port shl 16 + local port (both in INET order) |
| 203 | ; esi = data offset |
202 | ; esi = data offset |
| 204 | ; |
203 | ; |
| 205 | ;----------------------------------------------------------------- |
204 | ;----------------------------------------------------------------- |
| Line 206... | Line 205... | ||
| 206 | 205 | ||
| Line 207... | Line 206... | ||
| 207 | UDP_create_Packet: |
206 | UDP_create_packet: |
| Line 208... | Line 207... | ||
| 208 | 207 | ||
| Line 209... | Line 208... | ||
| 209 | DEBUGF 1,"Create UDP Packet\n" |
208 | DEBUGF 1,"Create UDP Packet\n" |
| 210 | 209 | ||
| Line 211... | Line 210... | ||
| 211 | push edx esi |
210 | push edx esi |
| Line 212... | Line 211... | ||
| 212 | 211 | ||
| 213 | add ecx, UDP_Packet.Data |
212 | add ecx, UDP_Packet.Data |
| 214 | mov di , IP_PROTO_UDP |
213 | mov di , IP_PROTO_UDP |
| Line -... | Line 214... | ||
| - | 214 | ||
| 215 | 215 | ; dx = fragment id |
|
| 216 | ; dx = fragment id |
216 | |
| 217 | - | ||
| Line 218... | Line 217... | ||
| 218 | call IPv4_create_Packet ; TODO: figure out a way to choose between IPv4 and IPv6 |
217 | call IPv4_create_packet ; TODO: figure out a way to choose between IPv4 and IPv6 |
| 219 | cmp edi, -1 |
218 | cmp edi, -1 |
| 220 | je .exit |
219 | je .exit |
| 221 | 220 | ||
| Line 233... | Line 232... | ||
| 233 | and cx , 3 |
232 | and cx , 3 |
| 234 | rep movsb |
233 | rep movsb |
| 235 | pop edi |
234 | pop edi |
| Line 236... | Line 235... | ||
| 236 | 235 | ||
| 237 | pop ecx |
236 | pop ecx |
| 238 | bswap ecx ; convert little endian - big endian |
237 | ; bswap ecx ; convert little endian - big endian |
| 239 | rol ecx, 16 ; |
238 | ; rol ecx, 16 ; |
| Line 240... | Line 239... | ||
| 240 | mov dword [edi + UDP_Packet.SourcePort], ecx ; notice: we write both port's at once |
239 | mov dword [edi + UDP_Packet.SourcePort], ecx ; notice: we write both port's at once |