1,9 → 1,20 |
; Zero-config |
; v 1.4 |
; |
; DHCP code is based on that by Mike Hibbet (DHCP client for menuetos) |
; |
; Written by HidnPlayr & Derpenguin |
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
;; ;; |
;; Copyright (C) KolibriOS team 2010-2013. All rights reserved. ;; |
;; Distributed under terms of the GNU General Public License ;; |
;; ;; |
;; zeroconfig.asm - Zeroconfig service for KolibriOS ;; |
;; ;; |
;; Written by hidnplayr@kolibrios.org ;; |
;; Some code contributed by Derpenguin ;; |
;; ;; |
;; DHCP code is based on that by Mike Hibbet ;; |
; (DHCP client for menuetos) ;; |
;; ;; |
;; GNU GENERAL PUBLIC LICENSE ;; |
;; Version 2, June 1991 ;; |
;; ;; |
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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format binary as "" |
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20,7 → 31,6 |
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; CONFIGURATION |
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TIMEOUT equ 60 ; in seconds |
BUFFER equ 1024 ; in bytes |
__DEBUG__ equ 1 ; enable/disable |
125,14 → 135,13 |
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START: ; start of execution |
START: |
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mcall 40, 1 shl 7 ; network event |
mcall 40, EVM_STACK ; network event |
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DEBUGF 1,">Zero-config service:\n" |
DEBUGF 1,">Zero-config service loaded\n" |
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mcall 76, API_ETH + 4 |
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mcall 76, API_ETH + 4 ; get MAC of ethernet interface 0 |
cmp eax, -1 |
je exit |
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141,33 → 150,29 |
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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 |
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cld |
mov edi, path ; Calculate the length of zero-terminated string |
xor al , al |
mov ecx, 1024 |
repnz scas byte[es:edi] |
repne scasb |
dec edi |
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mov esi, filename |
mov esi, filename ; append with .ini |
movsd |
movsb |
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DEBUGF 1,"->path to ini: %s\n", path |
DEBUGF 1,"->Loading ini %s\n", path |
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mcall 68,11 |
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stdcall dll.Load,@IMPORT |
or eax,eax |
jnz skip_ini |
jnz try_dhcp |
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invoke ini.get_str, path, str_ipconfig, str_type, inibuf, 16, 0 |
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mov eax,dword[inibuf] |
cmp dword[inibuf], 'stat' |
jne try_dhcp |
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cmp eax,'stat' |
jne skip_ini |
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invoke ini.get_str, path, str_ipconfig, str_ip, inibuf, 16, 0 |
mov edx, inibuf |
call Ip2dword |
192,9 → 197,9 |
mcall -1 |
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skip_ini: |
try_dhcp: |
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DEBUGF 1,"->Skip ini\n" |
DEBUGF 1,"->Trying DHCP\n" |
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mcall 75, 0, AF_INET4, SOCK_DGRAM, 0 ; open socket (parameters: domain, type, reserved) |
cmp eax, -1 |
201,7 → 206,7 |
je error |
mov [socketNum], eax |
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DEBUGF 1,"->socket %x opened\n", eax |
DEBUGF 1,"->Socket %x opened\n", eax |
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mcall 75, 2, [socketNum], sockaddr1, 18 ; bind socket to local port 68 |
cmp eax, -1 |
215,14 → 220,14 |
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DEBUGF 1,"->Connected to 255.255.255.255 on port 67\n" |
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mov byte [dhcpMsgType], 0x01 ; DHCP discover |
mov dword [dhcpLease], esi ; esi is still -1 (-1 = forever) |
mov [dhcpMsgType], 0x01 ; DHCP discover |
mov [dhcpLease], esi ; esi is still -1 (-1 = forever) |
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mcall 26, 9 |
mcall 26, 9 ; Get system time |
imul eax,100 |
mov [currTime],eax |
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buildRequest: ; Creates a DHCP request packet. |
build_request: ; Creates a DHCP request packet. |
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DEBUGF 1,"->Building request\n" |
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236,7 → 241,6 |
mov edi, eax |
mov ecx, BUFFER |
xor eax, eax |
cld |
rep stosb |
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;; todo: put this in a buffer instead of writing bytes and words! |
273,7 → 277,7 |
mov [edx+240+21], byte 0xff ; "Discover" options |
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mov [dhcpMsgLen], dword 262 ; end of options marker |
jmp send_request |
jmp send_dhcpmsg |
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request_options: |
mov [edx+240+21], word 0x0436 ; server IP |
284,7 → 288,7 |
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mov [dhcpMsgLen], dword 268 |
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send_request: |
send_dhcpmsg: |
mcall 75, 6, [socketNum], [dhcpMsg], [dhcpMsgLen] ; write to socket ( send broadcast request ) |
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mov eax, [dhcpMsg] ; Setup the DHCP buffer to receive response |
312,26 → 316,34 |
; 1) If the response is DHCP ACK then |
; 1.1) extract the DNS & subnet fields. Set them in the stack |
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cmp [dhcpMsgType], byte 0x01 ; did we send a discover? |
cmp [dhcpMsgType], 0x01 ; did we send a discover? |
je discover |
cmp [dhcpMsgType], byte 0x03 ; did we send a request? |
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cmp [dhcpMsgType], 0x03 ; did we send a request? |
je request |
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jmp exit ; really unknown, what we did |
call dhcp_end ; we should never reach here ;) |
jmp exit |
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discover: |
call parseResponse |
call parse_response |
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cmp [dhcpMsgType], byte 0x02 ; Was the response an offer? |
jne apipa ; NO - so we do zeroconf |
mov [dhcpMsgType], byte 0x03 ; DHCP request |
jmp buildRequest |
cmp [dhcpMsgType], 0x02 ; Was the response an offer? |
je send_request |
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call dhcp_end |
jmp link_local |
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send_request: |
mov [dhcpMsgType], 0x03 ; make it a request |
jmp build_request |
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request: |
call parseResponse |
call parse_response |
call dhcp_end |
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cmp [dhcpMsgType], byte 0x05 ; Was the response an ACK? It should be |
jne apipa ; NO - so we do zeroconf |
cmp [dhcpMsgType], 0x05 ; Was the response an ACK? It should be |
jne link_local ; NO - so we do link-local |
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mcall 76, API_IPv4 + 3, [dhcp.ip] ; ip |
mcall 76, API_IPv4 + 5, [dhcp.dns] ; dns |
340,6 → 352,12 |
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jmp exit |
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dhcp_end: |
mcall close, [socketNum] |
stdcall mem.Free, [dhcpMsg] |
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ret |
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;*************************************************************************** |
; Function |
; parseResponse |
353,7 → 371,8 |
; The message is stored in dhcpMsg |
; |
;*************************************************************************** |
parseResponse: |
parse_response: |
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DEBUGF 1,"Data received, parsing response\n" |
mov edx, [dhcpMsg] |
|
361,43 → 380,69 |
pop [dhcp.ip] |
DEBUGF 1,"Client: %u.%u.%u.%u\n",[edx+16]:1,[edx+17]:1,[edx+18]:1,[edx+19]:1 |
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add edx, 240 ; Point to first option |
xor ecx, ecx |
; TODO: check if there really are options |
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next_option: |
mov al, 240 ; Point to first option |
movzx ecx, al |
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.next_option: |
add edx, ecx |
pr001: |
mov al, [edx] |
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mov al, [edx] ; get message identifier |
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cmp al, 0xff ; End of options? |
je pr_exit |
je .done |
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cmp al, 0 |
je .pad |
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; TODO: check if we still are inside the buffer |
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inc edx |
movzx ecx, byte [edx] ; get data length |
inc edx ; point to data |
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cmp al, dhcp_msg_type ; Msg type is a single byte option |
jne @f |
je .msgtype |
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mov al, [edx+2] |
cmp al, dhcp_dhcp_server_id |
je .server |
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cmp al, dhcp_address_time |
je .lease |
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cmp al, dhcp_subnet_mask |
je .subnet |
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cmp al, dhcp_router |
je .router |
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cmp al, dhcp_domain_server |
je .dns |
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DEBUGF 1,"Unsupported DHCP option: %u\n", al |
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jmp .next_option |
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.pad: |
xor ecx, ecx |
inc ecx |
jmp .next_option |
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.msgtype: |
mov al, [edx] |
mov [dhcpMsgType], al |
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DEBUGF 1,"DHCP Msg type: %u\n", al |
jmp .next_option ; Get next option |
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add edx, 3 |
jmp pr001 ; Get next option |
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@@: |
inc edx |
movzx ecx, byte [edx] |
inc edx ; point to data |
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cmp al, dhcp_dhcp_server_id ; server ip |
jne @f |
.server: |
mov eax, [edx] |
mov [dhcpServerIP], eax |
DEBUGF 1,"Server: %u.%u.%u.%u\n",[edx]:1,[edx+1]:1,[edx+2]:1,[edx+3]:1 |
jmp next_option |
jmp .next_option |
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@@: |
cmp al, dhcp_address_time |
jne @f |
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.lease: |
pusha |
mov eax,[edx] |
bswap eax |
404,43 → 449,29 |
mov [dhcpLease],eax |
DEBUGF 1,"lease: %d\n",eax |
popa |
jmp .next_option |
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jmp next_option |
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@@: |
cmp al, dhcp_subnet_mask |
jne @f |
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.subnet: |
push dword [edx] |
pop [dhcp.subnet] |
DEBUGF 1,"Subnet: %u.%u.%u.%u\n",[edx]:1,[edx+1]:1,[edx+2]:1,[edx+3]:1 |
jmp next_option |
jmp .next_option |
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@@: |
cmp al, dhcp_router |
jne @f |
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.router: |
push dword [edx] |
pop [dhcp.gateway] |
DEBUGF 1,"Gateway: %u.%u.%u.%u\n",[edx]:1,[edx+1]:1,[edx+2]:1,[edx+3]:1 |
jmp next_option |
jmp .next_option |
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@@: |
cmp al, dhcp_domain_server |
jne next_option |
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.dns: |
push dword [edx] |
pop [dhcp.dns] |
DEBUGF 1,"DNS: %u.%u.%u.%u\n",[edx]:1,[edx+1]:1,[edx+2]:1,[edx+3]:1 |
jmp next_option |
jmp .next_option |
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pr_exit: |
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.done: |
ret |
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; DEBUGF 1,"Sending ARP announce\n" |
;;; |
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apipa: |
447,6 → 478,7 |
mcall close, [socketNum] |
stdcall mem.Free, [dhcpMsg] |
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link_local: |
call random |
mov ecx,0xfea9 ; IP 169.254.0.0 link local net, see RFC3927 |
464,12 → 496,12 |
call random ; create a pseudo random number in eax (seeded by MAC) |
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cmp al,PROBE_MIN*100 ; check if al is bigger then PROBE_MIN |
jge @f ; all ok |
jae @f ; all ok |
add al,(PROBE_MAX-PROBE_MIN)*100 ; al is too small |
@@: |
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cmp al,PROBE_MAX*100 |
jle @f |
jbe @f |
sub al,(PROBE_MAX-PROBE_MIN)*100 |
@@: |
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478,11 → 510,11 |
mcall 5 |
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DEBUGF 1,"Sending Probe\n" |
; eth.ARP_PROBE MAC |
mcall 76, API_ARP + 6 |
inc esi |
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cmp esi,PROBE_NUM |
jl probe_loop |
jb probe_loop |
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; now we wait further ANNOUNCE_WAIT seconds and send ANNOUNCE_NUM ARP announces. If any other host has assingned |
; IP within this time, we should create another adress, that have to be done later |
493,7 → 525,7 |
announce_loop: |
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DEBUGF 1,"Sending Announce\n" |
; eth.ARP_ANNOUNCE MAC |
mcall 76, API_ARP + 6 |
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inc esi |
cmp esi,ANNOUNCE_NUM |
503,10 → 535,11 |
mcall 5, ANNOUNCE_INTERVAL*100 |
jmp announce_loop |
@@: |
; we should, instead of closing, detect ARP conflicts and detect if cable keeps connected ;) |
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error: |
exit: |
DEBUGF 1,"Socket error\n" |
exit: ; we should, instead of closing, detect ARP conflicts and detect if cable keeps connected ;) |
mcall -1 |
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584,7 → 617,6 |
MAC dp ? |
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currTime dd ? |
renewTime dd ? |
generator dd ? |
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dhcpMsg dd ? |