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3200 | hidnplayr | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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3 | ;; Copyright (C) KolibriOS team 2010-2013. 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 | ;; zeroconfig.asm - Zeroconfig service for KolibriOS ;; |
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7 | ;; ;; |
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8 | ;; Written by hidnplayr@kolibrios.org ;; |
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9 | ;; Some code contributed by Derpenguin ;; |
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10 | ;; ;; |
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11 | ;; DHCP code is based on that by Mike Hibbet ;; |
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12 | ; (DHCP client for menuetos) ;; |
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13 | ;; ;; |
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14 | ;; GNU GENERAL PUBLIC LICENSE ;; |
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15 | ;; Version 2, June 1991 ;; |
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16 | ;; ;; |
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17 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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1164 | hidnplayr | 18 | |
2856 | hidnplayr | 19 | format binary as "" |
20 | |||
1164 | hidnplayr | 21 | use32 |
2856 | hidnplayr | 22 | org 0x0 |
1164 | hidnplayr | 23 | |
2856 | hidnplayr | 24 | db 'MENUET01' ; 8 byte id |
25 | dd 0x01 ; header version |
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26 | dd START ; start of code |
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27 | dd IM_END ; size of image |
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28 | dd (I_END+0x100) ; memory for app |
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29 | dd (I_END+0x100) ; esp |
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30 | dd 0x0 , path ; I_Param , I_Icon |
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1164 | hidnplayr | 31 | |
32 | ; CONFIGURATION |
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33 | |||
2856 | hidnplayr | 34 | TIMEOUT equ 60 ; in seconds |
35 | BUFFER equ 1024 ; in bytes |
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36 | __DEBUG__ equ 1 ; enable/disable |
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37 | __DEBUG_LEVEL__ equ 1 ; 1 = all, 2 = errors |
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1164 | hidnplayr | 38 | |
39 | ; CONFIGURATION FOR LINK-LOCAL |
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40 | |||
2856 | hidnplayr | 41 | PROBE_WAIT equ 1 ; second (initial random delay) |
42 | PROBE_MIN equ 1 ; second (minimum delay till repeated probe) |
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43 | PROBE_MAX equ 2 ; seconds (maximum delay till repeated probe) |
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44 | PROBE_NUM equ 3 ; (number of probe packets) |
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1164 | hidnplayr | 45 | |
2856 | hidnplayr | 46 | ANNOUNCE_NUM equ 2 ; (number of announcement packets) |
47 | ANNOUNCE_INTERVAL equ 2 ; seconds (time between announcement packets) |
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48 | ANNOUNCE_WAIT equ 2 ; seconds (delay before announcing) |
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1164 | hidnplayr | 49 | |
2856 | hidnplayr | 50 | MAX_CONFLICTS equ 10 ; (max conflicts before rate limiting) |
1164 | hidnplayr | 51 | |
2856 | hidnplayr | 52 | RATE_LIMIT_INTERVAL equ 60 ; seconds (delay between successive attempts) |
1164 | hidnplayr | 53 | |
2856 | hidnplayr | 54 | DEFEND_INTERVAL equ 10 ; seconds (min. wait between defensive ARPs) |
1164 | hidnplayr | 55 | |
56 | |||
1166 | hidnplayr | 57 | include '../proc32.inc' |
58 | include '../macros.inc' |
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59 | include '../debug-fdo.inc' |
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1542 | hidnplayr | 60 | include '../network.inc' |
1164 | hidnplayr | 61 | include 'dhcp.inc' |
2856 | hidnplayr | 62 | include '../dll.inc' |
1164 | hidnplayr | 63 | |
64 | |||
65 | Ip2dword: |
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66 | push edx |
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67 | |||
68 | ; This code validates if the query is an IP containing 4 numbers and 3 dots |
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69 | |||
2856 | hidnplayr | 70 | xor al, al ; make al (dot count) zero |
1164 | hidnplayr | 71 | |
72 | @@: |
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73 | cmp byte[edx],'0' ; check if this byte is a number, if not jump to no_IP |
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2856 | hidnplayr | 74 | jl no_IP ; |
1164 | hidnplayr | 75 | cmp byte[edx],'9' ; |
2856 | hidnplayr | 76 | jg no_IP ; |
1164 | hidnplayr | 77 | |
2856 | hidnplayr | 78 | inc edx ; the byte was a number, so lets check the next byte |
1164 | hidnplayr | 79 | |
80 | cmp byte[edx],0 ; is this byte zero? (have we reached end of query?) |
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2856 | hidnplayr | 81 | jz @f ; jump to next @@ then |
1164 | hidnplayr | 82 | cmp byte[edx],':' |
2856 | hidnplayr | 83 | jz @f |
1164 | hidnplayr | 84 | |
85 | cmp byte[edx],'.' ; is this byte a dot? |
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2856 | hidnplayr | 86 | jne @r ; if not, jump to previous @@ |
1164 | hidnplayr | 87 | |
2856 | hidnplayr | 88 | inc al ; the byte was a dot so increment al(dot count) |
89 | inc edx ; next byte |
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90 | jmp @r ; lets check for numbers again (jump to previous @@) |
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1164 | hidnplayr | 91 | |
2856 | hidnplayr | 92 | @@: ; we reach this when end of query reached |
93 | cmp al,3 ; check if there where 3 dots |
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94 | jnz no_IP ; if not, jump to no_IP |
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1164 | hidnplayr | 95 | |
96 | ; The following code will convert this IP into a dword and output it in eax |
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97 | ; If there is also a port number specified, this will be returned in ebx, otherwise ebx is -1 |
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98 | |||
2856 | hidnplayr | 99 | pop esi ; edx (query address) was pushed onto stack and is now popped in esi |
1164 | hidnplayr | 100 | |
2856 | hidnplayr | 101 | xor edx, edx ; result |
102 | xor eax, eax ; current character |
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103 | xor ebx, ebx ; current byte |
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1164 | hidnplayr | 104 | |
3200 | hidnplayr | 105 | .outer_loop: |
1164 | hidnplayr | 106 | shl edx, 8 |
107 | add edx, ebx |
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108 | xor ebx, ebx |
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3200 | hidnplayr | 109 | .inner_loop: |
1164 | hidnplayr | 110 | lodsb |
111 | test eax, eax |
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2856 | hidnplayr | 112 | jz .finish |
1164 | hidnplayr | 113 | cmp al, '.' |
2856 | hidnplayr | 114 | jz .outer_loop |
1164 | hidnplayr | 115 | sub eax, '0' |
116 | imul ebx, 10 |
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117 | add ebx, eax |
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118 | jmp .inner_loop |
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3200 | hidnplayr | 119 | .finish: |
1164 | hidnplayr | 120 | shl edx, 8 |
121 | add edx, ebx |
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122 | |||
2856 | hidnplayr | 123 | bswap edx ; we want little endian order |
1164 | hidnplayr | 124 | |
125 | ret |
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126 | |||
127 | no_IP: |
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128 | pop edx |
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129 | xor edx, edx |
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130 | |||
131 | ret |
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132 | |||
133 | |||
134 | |||
135 | |||
136 | |||
137 | |||
3200 | hidnplayr | 138 | START: |
1164 | hidnplayr | 139 | |
3200 | hidnplayr | 140 | mcall 40, EVM_STACK ; network event |
1164 | hidnplayr | 141 | |
3200 | hidnplayr | 142 | DEBUGF 1,">Zero-config service loaded\n" |
1164 | hidnplayr | 143 | |
3200 | hidnplayr | 144 | mcall 76, API_ETH + 4 ; get MAC of ethernet interface 0 |
2856 | hidnplayr | 145 | cmp eax, -1 |
146 | je exit |
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1164 | hidnplayr | 147 | |
2856 | hidnplayr | 148 | mov word[MAC], bx |
149 | mov dword[MAC+2], eax |
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1164 | hidnplayr | 150 | |
2856 | hidnplayr | 151 | DEBUGF 1,"->MAC: %x-%x-%x-%x-%x-%x\n",[MAC]:2,[MAC+1]:2,[MAC+2]:2,[MAC+3]:2,[MAC+4]:2,[MAC+5]:2 |
1164 | hidnplayr | 152 | |
3200 | hidnplayr | 153 | mov edi, path ; Calculate the length of zero-terminated string |
154 | xor al, al |
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2856 | hidnplayr | 155 | mov ecx, 1024 |
3200 | hidnplayr | 156 | repne scasb |
2856 | hidnplayr | 157 | dec edi |
1174 | hidnplayr | 158 | |
3200 | hidnplayr | 159 | mov esi, filename ; append with .ini |
2856 | hidnplayr | 160 | movsd |
161 | movsb |
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1174 | hidnplayr | 162 | |
3200 | hidnplayr | 163 | DEBUGF 1,"->Loading ini %s\n", path |
1164 | hidnplayr | 164 | |
3200 | hidnplayr | 165 | mcall 68, 11 |
1164 | hidnplayr | 166 | |
2856 | hidnplayr | 167 | stdcall dll.Load,@IMPORT |
3200 | hidnplayr | 168 | or eax, eax |
169 | jnz try_dhcp |
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1164 | hidnplayr | 170 | |
3200 | hidnplayr | 171 | invoke ini.get_str, path, str_ipconfig, str_type, inibuf, 16, 0 |
1164 | hidnplayr | 172 | |
3200 | hidnplayr | 173 | cmp dword[inibuf], 'stat' |
174 | jne try_dhcp |
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1164 | hidnplayr | 175 | |
3200 | hidnplayr | 176 | invoke ini.get_str, path, str_ipconfig, str_ip, inibuf, 16, 0 |
177 | mov edx, inibuf |
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178 | call Ip2dword |
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179 | mcall 76, API_IPv4 + 3, edx |
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1164 | hidnplayr | 180 | |
3200 | hidnplayr | 181 | invoke ini.get_str, path, str_ipconfig, str_gateway, inibuf, 16, 0 |
182 | mov edx, inibuf |
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183 | call Ip2dword |
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184 | mcall 76, API_IPv4 + 9, edx |
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1164 | hidnplayr | 185 | |
3200 | hidnplayr | 186 | invoke ini.get_str, path, str_ipconfig, str_dns, inibuf, 16, 0 |
187 | mov edx, inibuf |
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188 | call Ip2dword |
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189 | mcall 76, API_IPv4 + 5, edx |
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1164 | hidnplayr | 190 | |
3200 | hidnplayr | 191 | invoke ini.get_str, path, str_ipconfig, str_subnet, inibuf, 16, 0 |
192 | mov edx, inibuf |
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193 | call Ip2dword |
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194 | mcall 76, API_IPv4 + 7, edx |
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1164 | hidnplayr | 195 | |
196 | |||
3200 | hidnplayr | 197 | mcall -1 |
1164 | hidnplayr | 198 | |
199 | |||
3200 | hidnplayr | 200 | try_dhcp: |
1164 | hidnplayr | 201 | |
3200 | hidnplayr | 202 | DEBUGF 1,"->Trying DHCP\n" |
1164 | hidnplayr | 203 | |
3200 | hidnplayr | 204 | mcall 75, 0, AF_INET4, SOCK_DGRAM, 0 ; open socket (parameters: domain, type, reserved) |
205 | cmp eax, -1 |
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206 | je error |
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207 | mov [socketNum], eax |
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1164 | hidnplayr | 208 | |
3200 | hidnplayr | 209 | DEBUGF 1,"->Socket %x opened\n", eax |
1164 | hidnplayr | 210 | |
3200 | hidnplayr | 211 | mcall 75, 2, [socketNum], sockaddr1, 18 ; bind socket to local port 68 |
212 | cmp eax, -1 |
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213 | je error |
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1164 | hidnplayr | 214 | |
2856 | hidnplayr | 215 | DEBUGF 1,"->Socket Bound to local port 68\n" |
1164 | hidnplayr | 216 | |
3200 | hidnplayr | 217 | mcall 75, 4, [socketNum], sockaddr2, 18 ; connect to 255.255.255.255 on port 67 |
218 | cmp eax, -1 |
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219 | je error |
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1164 | hidnplayr | 220 | |
2856 | hidnplayr | 221 | DEBUGF 1,"->Connected to 255.255.255.255 on port 67\n" |
1164 | hidnplayr | 222 | |
3200 | hidnplayr | 223 | mov [dhcpMsgType], 0x01 ; DHCP discover |
224 | mov [dhcpLease], esi ; esi is still -1 (-1 = forever) |
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1164 | hidnplayr | 225 | |
3200 | hidnplayr | 226 | mcall 26, 9 ; Get system time |
227 | imul eax, 100 |
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228 | mov [currTime], eax |
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1164 | hidnplayr | 229 | |
3200 | hidnplayr | 230 | build_request: ; Creates a DHCP request packet. |
1164 | hidnplayr | 231 | |
2856 | hidnplayr | 232 | DEBUGF 1,"->Building request\n" |
1164 | hidnplayr | 233 | |
2856 | hidnplayr | 234 | stdcall mem.Alloc, BUFFER |
235 | mov [dhcpMsg], eax |
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3200 | hidnplayr | 236 | test eax, eax |
2856 | hidnplayr | 237 | jz apipa |
1164 | hidnplayr | 238 | |
2856 | hidnplayr | 239 | ;;; todo: skip this bullcrap |
1164 | hidnplayr | 240 | |
2856 | hidnplayr | 241 | mov edi, eax |
242 | mov ecx, BUFFER |
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243 | xor eax, eax |
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244 | rep stosb |
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1164 | hidnplayr | 245 | |
2856 | hidnplayr | 246 | ;; todo: put this in a buffer instead of writing bytes and words! |
1164 | hidnplayr | 247 | |
3200 | hidnplayr | 248 | mov edx, [dhcpMsg] |
1164 | hidnplayr | 249 | |
2856 | hidnplayr | 250 | mov [edx], byte 0x01 ; Boot request |
251 | mov [edx+1], byte 0x01 ; Ethernet |
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252 | mov [edx+2], byte 0x06 ; Ethernet h/w len |
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253 | mov [edx+4], dword 0x11223344 ; xid ;;;;;;; |
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3200 | hidnplayr | 254 | mov eax, [currTime] |
2856 | hidnplayr | 255 | mov [edx+8], eax ; secs, our uptime |
256 | mov [edx+10], byte 0x80 ; broadcast flag set |
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257 | mov eax, dword [MAC] ; first 4 bytes of MAC |
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258 | mov [edx+28],dword eax |
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259 | mov ax, word [MAC+4] ; last 2 bytes of MAC |
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260 | mov [edx+32],word ax |
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261 | mov [edx+236], dword 0x63538263 ; magic cookie |
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262 | mov [edx+240], word 0x0135 ; option DHCP msg type |
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263 | mov al, [dhcpMsgType] |
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264 | mov [edx+240+2], al |
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265 | mov [edx+240+3], word 0x0433 ; option Lease time = infinity |
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266 | mov eax, [dhcpLease] |
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267 | mov [edx+240+5], eax |
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268 | mov [edx+240+9], word 0x0432 ; option requested IP address |
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2859 | hidnplayr | 269 | mov eax, [dhcp.ip] |
2856 | hidnplayr | 270 | mov [edx+240+11], eax |
271 | mov [edx+240+15], word 0x0437 ; option request list |
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272 | mov [edx+240+17], dword 0x0f060301 |
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1164 | hidnplayr | 273 | |
2856 | hidnplayr | 274 | cmp [dhcpMsgType], byte 0x01 ; Check which msg we are sending |
275 | jne request_options |
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1164 | hidnplayr | 276 | |
2856 | hidnplayr | 277 | mov [edx+240+21], byte 0xff ; "Discover" options |
1164 | hidnplayr | 278 | |
2856 | hidnplayr | 279 | mov [dhcpMsgLen], dword 262 ; end of options marker |
3200 | hidnplayr | 280 | jmp send_dhcpmsg |
1514 | hidnplayr | 281 | |
1164 | hidnplayr | 282 | request_options: |
2856 | hidnplayr | 283 | mov [edx+240+21], word 0x0436 ; server IP |
284 | mov eax, [dhcpServerIP] |
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285 | mov [edx+240+23], eax |
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1164 | hidnplayr | 286 | |
2856 | hidnplayr | 287 | mov [edx+240+27], byte 0xff ; end of options marker |
1164 | hidnplayr | 288 | |
2856 | hidnplayr | 289 | mov [dhcpMsgLen], dword 268 |
1164 | hidnplayr | 290 | |
3200 | hidnplayr | 291 | send_dhcpmsg: |
2856 | hidnplayr | 292 | mcall 75, 6, [socketNum], [dhcpMsg], [dhcpMsgLen] ; write to socket ( send broadcast request ) |
1164 | hidnplayr | 293 | |
2856 | hidnplayr | 294 | mov eax, [dhcpMsg] ; Setup the DHCP buffer to receive response |
295 | mov [dhcpMsgLen], eax ; Used as a pointer to the data |
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1164 | hidnplayr | 296 | |
2856 | hidnplayr | 297 | mcall 23, TIMEOUT*10 ; wait for data |
1164 | hidnplayr | 298 | |
2856 | hidnplayr | 299 | read_data: ; we have data - this will be the response |
300 | mcall 75, 7, [socketNum], [dhcpMsg], BUFFER ; read data from socket |
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1164 | hidnplayr | 301 | |
2856 | hidnplayr | 302 | DEBUGF 1,"->%d bytes received\n", eax |
1164 | hidnplayr | 303 | |
2856 | hidnplayr | 304 | cmp eax, -1 |
305 | je error |
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1164 | hidnplayr | 306 | |
2856 | hidnplayr | 307 | mov [dhcpMsgLen], eax |
1164 | hidnplayr | 308 | |
3200 | hidnplayr | 309 | ; depending on which msg we sent, handle the response |
310 | ; accordingly. |
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311 | ; If the response is to a dhcp discover, then: |
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312 | ; 1) If response is DHCP OFFER then |
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313 | ; 1.1) record server IP, lease time & IP address. |
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314 | ; 1.2) send a request packet |
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315 | ; If the response is to a dhcp request, then: |
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316 | ; 1) If the response is DHCP ACK then |
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317 | ; 1.1) extract the DNS & subnet fields. Set them in the stack |
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1164 | hidnplayr | 318 | |
3200 | hidnplayr | 319 | cmp [dhcpMsgType], 0x01 ; did we send a discover? |
320 | je discover |
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1164 | hidnplayr | 321 | |
3200 | hidnplayr | 322 | cmp [dhcpMsgType], 0x03 ; did we send a request? |
323 | je request |
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1164 | hidnplayr | 324 | |
3200 | hidnplayr | 325 | call dhcp_end ; we should never reach here ;) |
326 | jmp exit |
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327 | |||
1164 | hidnplayr | 328 | discover: |
3200 | hidnplayr | 329 | call parse_response |
1164 | hidnplayr | 330 | |
3200 | hidnplayr | 331 | cmp [dhcpMsgType], 0x02 ; Was the response an offer? |
332 | je send_request |
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1164 | hidnplayr | 333 | |
3200 | hidnplayr | 334 | call dhcp_end |
335 | jmp link_local |
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336 | |||
337 | send_request: |
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338 | mov [dhcpMsgType], 0x03 ; make it a request |
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339 | jmp build_request |
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340 | |||
1164 | hidnplayr | 341 | request: |
3200 | hidnplayr | 342 | call parse_response |
343 | call dhcp_end |
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1164 | hidnplayr | 344 | |
3200 | hidnplayr | 345 | cmp [dhcpMsgType], 0x05 ; Was the response an ACK? It should be |
346 | jne link_local ; NO - so we do link-local |
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1164 | hidnplayr | 347 | |
3200 | hidnplayr | 348 | mcall 76, API_IPv4 + 3, [dhcp.ip] ; ip |
349 | mcall 76, API_IPv4 + 5, [dhcp.dns] ; dns |
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350 | mcall 76, API_IPv4 + 7, [dhcp.subnet] ; subnet |
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351 | mcall 76, API_IPv4 + 9, [dhcp.gateway] ; gateway |
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2859 | hidnplayr | 352 | |
2856 | hidnplayr | 353 | jmp exit |
1164 | hidnplayr | 354 | |
3200 | hidnplayr | 355 | dhcp_end: |
356 | mcall close, [socketNum] |
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357 | stdcall mem.Free, [dhcpMsg] |
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358 | |||
359 | ret |
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360 | |||
1164 | hidnplayr | 361 | ;*************************************************************************** |
362 | ; Function |
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363 | ; parseResponse |
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364 | ; |
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365 | ; Description |
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366 | ; extracts the fields ( client IP address and options ) from |
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367 | ; a DHCP response |
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368 | ; The values go into |
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369 | ; dhcpMsgType,dhcpLease,dhcpClientIP,dhcpServerIP, |
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370 | ; dhcpDNSIP, dhcpSubnet |
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371 | ; The message is stored in dhcpMsg |
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372 | ; |
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373 | ;*************************************************************************** |
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3200 | hidnplayr | 374 | parse_response: |
1164 | hidnplayr | 375 | |
3200 | hidnplayr | 376 | DEBUGF 1,"Data received, parsing response\n" |
377 | mov edx, [dhcpMsg] |
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1164 | hidnplayr | 378 | |
3200 | hidnplayr | 379 | push dword [edx+16] |
380 | pop [dhcp.ip] |
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381 | DEBUGF 1,"Client: %u.%u.%u.%u\n", [edx+16]:1, [edx+17]:1, [edx+18]:1, [edx+19]:1 |
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1164 | hidnplayr | 382 | |
3200 | hidnplayr | 383 | ; TODO: check if there really are options |
1164 | hidnplayr | 384 | |
3200 | hidnplayr | 385 | mov al, 240 ; Point to first option |
386 | movzx ecx, al |
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1164 | hidnplayr | 387 | |
3200 | hidnplayr | 388 | .next_option: |
389 | add edx, ecx |
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2859 | hidnplayr | 390 | |
3200 | hidnplayr | 391 | mov al, [edx] ; get message identifier |
2859 | hidnplayr | 392 | |
3200 | hidnplayr | 393 | cmp al, 0xff ; End of options? |
394 | je .done |
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1164 | hidnplayr | 395 | |
3200 | hidnplayr | 396 | cmp al, 0 |
397 | je .pad |
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1164 | hidnplayr | 398 | |
3200 | hidnplayr | 399 | ; TODO: check if we still are inside the buffer |
1164 | hidnplayr | 400 | |
3200 | hidnplayr | 401 | inc edx |
402 | movzx ecx, byte [edx] ; get data length |
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403 | inc edx ; point to data |
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1164 | hidnplayr | 404 | |
3200 | hidnplayr | 405 | cmp al, dhcp_msg_type ; Msg type is a single byte option |
406 | je .msgtype |
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1164 | hidnplayr | 407 | |
3200 | hidnplayr | 408 | cmp al, dhcp_dhcp_server_id |
409 | je .server |
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1164 | hidnplayr | 410 | |
3200 | hidnplayr | 411 | cmp al, dhcp_address_time |
412 | je .lease |
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1164 | hidnplayr | 413 | |
3200 | hidnplayr | 414 | cmp al, dhcp_subnet_mask |
415 | je .subnet |
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1164 | hidnplayr | 416 | |
3200 | hidnplayr | 417 | cmp al, dhcp_router |
418 | je .router |
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1164 | hidnplayr | 419 | |
3200 | hidnplayr | 420 | cmp al, dhcp_domain_server |
421 | je .dns |
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1164 | hidnplayr | 422 | |
3200 | hidnplayr | 423 | DEBUGF 1,"Unsupported DHCP option: %u\n", al |
1164 | hidnplayr | 424 | |
3200 | hidnplayr | 425 | jmp .next_option |
1164 | hidnplayr | 426 | |
3200 | hidnplayr | 427 | .pad: |
428 | xor ecx, ecx |
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429 | inc ecx |
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430 | jmp .next_option |
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1164 | hidnplayr | 431 | |
3200 | hidnplayr | 432 | .msgtype: |
433 | mov al, [edx] |
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434 | mov [dhcpMsgType], al |
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1164 | hidnplayr | 435 | |
3200 | hidnplayr | 436 | DEBUGF 1,"DHCP Msg type: %u\n", al |
437 | jmp .next_option ; Get next option |
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438 | |||
439 | .server: |
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440 | mov eax, [edx] |
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441 | mov [dhcpServerIP], eax |
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442 | DEBUGF 1,"Server: %u.%u.%u.%u\n",[edx]:1,[edx+1]:1,[edx+2]:1,[edx+3]:1 |
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443 | jmp .next_option |
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444 | |||
445 | .lease: |
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446 | pusha |
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447 | mov eax,[edx] |
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448 | bswap eax |
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449 | mov [dhcpLease],eax |
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450 | DEBUGF 1,"lease: %d\n",eax |
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451 | popa |
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452 | jmp .next_option |
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453 | |||
454 | .subnet: |
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455 | push dword [edx] |
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456 | pop [dhcp.subnet] |
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457 | DEBUGF 1,"Subnet: %u.%u.%u.%u\n",[edx]:1,[edx+1]:1,[edx+2]:1,[edx+3]:1 |
||
458 | jmp .next_option |
||
459 | |||
460 | .router: |
||
461 | push dword [edx] |
||
462 | pop [dhcp.gateway] |
||
463 | DEBUGF 1,"Gateway: %u.%u.%u.%u\n",[edx]:1,[edx+1]:1,[edx+2]:1,[edx+3]:1 |
||
464 | jmp .next_option |
||
465 | |||
466 | .dns: |
||
467 | push dword [edx] |
||
468 | pop [dhcp.dns] |
||
469 | DEBUGF 1,"DNS: %u.%u.%u.%u\n",[edx]:1,[edx+1]:1,[edx+2]:1,[edx+3]:1 |
||
470 | jmp .next_option |
||
471 | |||
472 | .done: |
||
2856 | hidnplayr | 473 | ret |
474 | |||
1164 | hidnplayr | 475 | |
476 | |||
477 | apipa: |
||
2857 | hidnplayr | 478 | mcall close, [socketNum] |
479 | stdcall mem.Free, [dhcpMsg] |
||
1164 | hidnplayr | 480 | |
3200 | hidnplayr | 481 | |
1164 | hidnplayr | 482 | link_local: |
3200 | hidnplayr | 483 | call random |
484 | mov ecx, 0xfea9 ; IP 169.254.0.0 link local net, see RFC3927 |
||
485 | mov cx, ax |
||
486 | mcall 76, API_IPv4 + 3, ecx ; mask is 255.255.0.0 |
||
487 | DEBUGF 1,"Link Local IP assinged: 169.254.%u.%u\n", [generator+2]:1, [generator+3]:1 |
||
488 | mcall 76, API_IPv4 + 5, 0xffff |
||
489 | mcall 76, API_IPv4 + 9, 0x0 |
||
490 | mcall 76, API_IPv4 + 7, 0x0 |
||
1164 | hidnplayr | 491 | |
3200 | hidnplayr | 492 | mcall 5, PROBE_WAIT*100 |
1164 | hidnplayr | 493 | |
3200 | hidnplayr | 494 | xor esi, esi |
1164 | hidnplayr | 495 | probe_loop: |
3200 | hidnplayr | 496 | call random ; create a pseudo random number in eax (seeded by MAC) |
1164 | hidnplayr | 497 | |
3200 | hidnplayr | 498 | cmp al, PROBE_MIN*100 ; check if al is bigger then PROBE_MIN |
499 | jae @f ; all ok |
||
500 | add al, (PROBE_MAX-PROBE_MIN)*100 ; al is too small |
||
1164 | hidnplayr | 501 | @@: |
502 | |||
3200 | hidnplayr | 503 | cmp al, PROBE_MAX*100 |
504 | jbe @f |
||
505 | sub al, (PROBE_MAX-PROBE_MIN)*100 |
||
1164 | hidnplayr | 506 | @@: |
507 | |||
3200 | hidnplayr | 508 | movzx ebx,al |
509 | DEBUGF 1,"Waiting %u0ms\n",ebx |
||
510 | mcall 5 |
||
1164 | hidnplayr | 511 | |
3200 | hidnplayr | 512 | DEBUGF 1,"Sending Probe\n" |
513 | mcall 76, API_ARP + 6 |
||
514 | inc esi |
||
1164 | hidnplayr | 515 | |
3200 | hidnplayr | 516 | cmp esi, PROBE_NUM |
517 | jb probe_loop |
||
1164 | hidnplayr | 518 | |
519 | ; now we wait further ANNOUNCE_WAIT seconds and send ANNOUNCE_NUM ARP announces. If any other host has assingned |
||
520 | ; IP within this time, we should create another adress, that have to be done later |
||
521 | |||
3200 | hidnplayr | 522 | DEBUGF 1,"Waiting %us\n", ANNOUNCE_WAIT |
523 | mcall 5, ANNOUNCE_WAIT*100 |
||
524 | xor esi, esi |
||
1164 | hidnplayr | 525 | announce_loop: |
526 | |||
3200 | hidnplayr | 527 | DEBUGF 1,"Sending Announce\n" |
528 | mcall 76, API_ARP + 6 |
||
1164 | hidnplayr | 529 | |
3200 | hidnplayr | 530 | inc esi |
531 | cmp esi,ANNOUNCE_NUM |
||
532 | je @f |
||
1164 | hidnplayr | 533 | |
3200 | hidnplayr | 534 | DEBUGF 1,"Waiting %us\n", ANNOUNCE_INTERVAL |
535 | mcall 5, ANNOUNCE_INTERVAL*100 |
||
536 | jmp announce_loop |
||
1164 | hidnplayr | 537 | @@: |
538 | |||
3200 | hidnplayr | 539 | |
1164 | hidnplayr | 540 | error: |
3200 | hidnplayr | 541 | DEBUGF 1,"Socket error\n" |
542 | exit: ; we should, instead of closing, detect ARP conflicts and detect if cable keeps connected ;) |
||
543 | mcall -1 |
||
1164 | hidnplayr | 544 | |
545 | |||
546 | random: ; Pseudo random actually |
||
547 | |||
3200 | hidnplayr | 548 | mov eax, [generator] |
549 | add eax, -43ab45b5h |
||
550 | ror eax, 1 |
||
551 | bswap eax |
||
552 | xor eax, dword[MAC] |
||
553 | ror eax, 1 |
||
554 | xor eax, dword[MAC+2] |
||
555 | mov [generator], eax |
||
1164 | hidnplayr | 556 | |
3200 | hidnplayr | 557 | ret |
1164 | hidnplayr | 558 | |
559 | ; DATA AREA |
||
560 | |||
561 | align 16 |
||
562 | @IMPORT: |
||
563 | |||
564 | library \ |
||
2856 | hidnplayr | 565 | libini,'libini.obj' |
1164 | hidnplayr | 566 | |
2856 | hidnplayr | 567 | import libini, \ |
568 | ini.get_str,'ini_get_str' |
||
1164 | hidnplayr | 569 | |
570 | include_debug_strings |
||
571 | |||
3200 | hidnplayr | 572 | filename db '.ini', 0 |
573 | str_ip db 'ip', 0 |
||
574 | str_subnet db 'subnet', 0 |
||
575 | str_gateway db 'gateway', 0 |
||
576 | str_dns db 'dns', 0 |
||
577 | str_ipconfig db 'ipconfig', 0 |
||
578 | str_type db 'type', 0 |
||
1164 | hidnplayr | 579 | |
580 | |||
581 | sockaddr1: |
||
582 | |||
2856 | hidnplayr | 583 | dw AF_INET4 |
2995 | hidnplayr | 584 | dw 68 shl 8 ; local port |
2856 | hidnplayr | 585 | dd 0 ; local IP |
1164 | hidnplayr | 586 | |
2856 | hidnplayr | 587 | rb 10 |
1164 | hidnplayr | 588 | |
589 | |||
590 | sockaddr2: |
||
591 | |||
2856 | hidnplayr | 592 | dw AF_INET4 |
2995 | hidnplayr | 593 | dw 67 shl 8 ; destination port |
2856 | hidnplayr | 594 | dd -1 ; destination IP |
1164 | hidnplayr | 595 | |
2856 | hidnplayr | 596 | rb 10 |
1164 | hidnplayr | 597 | |
598 | |||
599 | IM_END: |
||
600 | |||
2856 | hidnplayr | 601 | inibuf rb 16 |
1164 | hidnplayr | 602 | |
2856 | hidnplayr | 603 | dhcpMsgType db ? |
604 | dhcpLease dd ? |
||
605 | dhcpServerIP dd ? |
||
1164 | hidnplayr | 606 | |
2859 | hidnplayr | 607 | dhcp: |
608 | .ip dd ? |
||
609 | .subnet dd ? |
||
610 | .dns dd ? |
||
611 | .gateway dd ? |
||
612 | |||
613 | |||
2856 | hidnplayr | 614 | dhcpMsgLen dd ? |
615 | socketNum dd ? |
||
1164 | hidnplayr | 616 | |
2856 | hidnplayr | 617 | MAC dp ? |
1164 | hidnplayr | 618 | |
2856 | hidnplayr | 619 | currTime dd ? |
620 | generator dd ? |
||
1164 | hidnplayr | 621 | |
2856 | hidnplayr | 622 | dhcpMsg dd ? |
1164 | hidnplayr | 623 | |
624 | I_END_2: |
||
625 | |||
2856 | hidnplayr | 626 | path rb 1024+5 |
1164 | hidnplayr | 627 | |
2856 | hidnplayr | 628 | rb 65536 |
1542 | hidnplayr | 629 | |
1164 | hidnplayr | 630 | I_END: |