;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; Copyright (C) KolibriOS team 2009-2013. All rights reserved. ;;
;; Distributed under terms of the GNU General Public License ;;
;; ;;
;; downloader.asm - HTTP client for KolibriOS ;;
;; ;;
;; Based on HTTPC.asm for menuetos by ville turjanmaa ;;
;; ;;
;; Programmers: Barsuk, Clevermouse, Marat Zakiyanov, ;;
;; Kirill Lipatov, dunkaist, HidnPlayr ;;
;; ;;
;; GNU GENERAL PUBLIC LICENSE ;;
;; Version 2, June 1991 ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
URLMAXLEN = 1024
BUFFERSIZE = 4096
__DEBUG__ = 1
__DEBUG_LEVEL__ = 1
format binary as ""
use32
org 0x0
db 'MENUET01' ; header
dd 0x01 ; header version
dd START ; entry point
dd IM_END ; image size
dd I_END+0x1000 ; required memory
dd I_END+0x1000 ; esp
dd params ; I_PARAM
dd 0x0 ; I_Path
include '../../macros.inc'
include '../../proc32.inc'
include '../../network.inc'
include '../../develop/libraries/box_lib/trunk/box_lib.mac'
include '../../dll.inc'
include '../../debug-fdo.inc'
START:
mcall 68, 11 ; init heap so we can allocate memory dynamically
; load libraries
stdcall dll.Load, @IMPORT
test eax, eax
jnz exit
; prepare webAddr area
mov al, ' '
mov edi, webAddr
mov ecx, URLMAXLEN
rep stosb
xor eax, eax
stosb
; prepare document area
mov al, '/'
mov edi, document
stosb
mov al, ' '
mov ecx, URLMAXLEN-1
rep stosb
; load proxy settings
invoke ini.get_str, inifile, sec_proxy, key_proxy, proxyAddr, 256, proxyAddr
invoke ini.get_int, inifile, sec_proxy, key_proxyport, 80
mov [proxyPort], eax
invoke ini.get_str, inifile, sec_proxy, key_user, proxyUser, 256, proxyUser
invoke ini.get_str, inifile, sec_proxy, key_password, proxyPassword, 256, proxyPassword
; check parameters
cmp byte[params], 0 ; no parameters ?
je reset_events ; load the GUI
; we have an url, copy untill space or 0
mov esi, params
mov edi, document_user
mov ecx, 1024 ; max parameter size
mov [shared_name], 0
.copy_param:
lodsb
test al, al
jz .done
cmp al, ' '
jz .done_with_shared
stosb
dec ecx
jnz .copy_param
DEBUGF 2, "Invalid parameters\n"
jmp exit
.done_with_shared:
mov [shared_name], esi
.done:
xor al, al
stosb
download:
DEBUGF 1, "Starting download\n"
call parse_url
cmp [server_ip], 0
je dns_error
call open_socket
call send_request
mcall 68, 12, BUFFERSIZE ; create buffer, we'll resize it later if needed..
mov [buf_ptr], eax
mov [buf_size], 0
call read_incoming_data
mcall close, [socketnum]
call parse_result
call save
mcall 68, 13, [final_buffer] ; free buffer
dns_error:
cmp byte [params], 0
jne exit
reset_events:
DEBUGF 1, "resetting events\n"
; Report events
; defaults + mouse
mcall 40,EVM_REDRAW+EVM_KEY+EVM_BUTTON+EVM_MOUSE+EVM_MOUSE_FILTER
redraw:
call draw_window
still:
DEBUGF 1, "waiting for events\n"
mcall 10 ; wait here for event
cmp eax, EV_REDRAW
je redraw
cmp eax, EV_KEY
je key
cmp eax, EV_BUTTON
je button
cmp eax, EV_MOUSE
je mouse
jmp still
key:
mcall 2 ; read key
stdcall [edit_box_key], dword edit1
cmp ax, 13 shl 8
je download
jmp still
button:
mcall 17 ; get id
cmp ah, 26
jne @f
call save_to_file
jmp still
@@:
cmp ah, 1 ; button id=1 ?
je exit
jmp download
mouse:
stdcall [edit_box_mouse], edit1
jmp still
exit:
DEBUGF 1, "Exiting\n"
or eax, -1 ; close this program
mcall
save:
cmp [shared_name], 0
je .use_file
call save_in_shared
jmp .done
.use_file:
call save_to_file
.done:
; if called from command line, then exit
cmp byte[params], 0
jne exit
mov ecx, [sc.work_text]
or ecx, 0x80000000
mcall 4, <10, 93>, , download_complete
ret
save_in_shared:
; open the shared memory area
mov esi, 1
mcall 68, 22, [shared_name], , 1 ; SHM_OPEN+SHM_WRITE
test eax, eax
jz exit
mov ecx, [final_size]
; store the size
mov [eax], ecx
; now copy the data
lea edi, [eax+4]
mov esi, [final_buffer]
mov eax, ecx
shr ecx, 2
rep movsd
mov ecx, eax
and ecx, 3
rep movsb
ret
;****************************************************************************
; Function
; save_to_file
;
; Description
;
;
;****************************************************************************
save_to_file:
DEBUGF 2, "Saving to file\n"
mcall 70, fileinfo
ret
;****************************************************************************
; Function
; send_request
;
; Description
; Transmits the GET request to the server.
; This is done as GET then URL then HTTP/1.1', 13, 10, 13, 10 in 3 packets
;
;****************************************************************************
send_request:
DEBUGF 1, "Sending request\n"
mov esi, string0
mov edi, request
movsd
; If proxy is used, make absolute URI - prepend http://<host>
cmp byte[proxyAddr], 0
jz .noproxy
mov dword[edi], 'http'
mov byte[edi+4], ':'
mov word[edi+5], '//'
add edi, 7
mov esi, webAddr
.copy_host_loop:
lodsb
cmp al, ' '
jz .noproxy
stosb
jmp .copy_host_loop
.noproxy:
xor edx, edx ; 0
.next_edx:
; Determine the length of the url to send in the GET request
mov al, [edx+document]
cmp al, ' '
jbe .document_done
mov [edi], al
inc edi
inc edx
jmp .next_edx
.document_done:
mov esi, stringh
mov ecx, stringh_end-stringh
rep movsb
xor edx, edx ; 0
.webaddr_next:
mov al, [webAddr + edx]
cmp al, ' '
jbe .webaddr_done
mov [edi], al
inc edi
inc edx
jmp .webaddr_next
.webaddr_done:
cmp byte[proxyUser], 0
jz @f
call append_proxy_auth_header
@@:
mov esi, connclose
mov ecx, connclose_end-connclose
rep movsb
pusha
mov eax, 63
mov ebx, 1
mov edx, request
@@:
mov cl, [edx]
cmp edx, edi
jz @f
mcall
inc edx
jmp @b
@@:
popa
mov esi, edi
sub esi, request ; length
xor edi, edi ; flags
mcall send, [socketnum], request ;' HTTP/1.1 .. '
ret
;****************************************************************************
; Function
; read_incoming_data
;
; Description
; receive the web page from the server, storing it without processing
;
;****************************************************************************
read_incoming_data:
DEBUGF 1, "Reading incoming data\n"
mov eax, [buf_ptr]
mov [pos], eax
.read:
mcall recv, [socketnum], [pos], BUFFERSIZE, 0
inc eax ; -1 = error (socket closed?)
jz .error
dec eax ; 0 bytes means the remote end closed the connection
jz .no_more_data
DEBUGF 1, "Got chunk of %u bytes\n", eax
add [buf_size], eax
add [pos], eax
push eax
mov ecx, [buf_size]
add ecx, BUFFERSIZE
mcall 68, 20, , [buf_ptr] ; reallocate memory block (make bigger)
; TODO: parse header and resize buffer only once
pop eax
jmp .read
.error:
DEBUGF 1, "Socket error: %u\n", ebx
.no_more_data:
mov eax, [buf_ptr]
sub [pos], eax
DEBUGF 1, "No more data\n"
ret
; this function cuts header, and removes chunk sizes if doc is chunked
; in: buf_ptr, pos; out: buf_ptr, pos.
parse_result:
mov edi, [buf_ptr]
mov edx, [pos]
; mov [buf_size], edx
; mcall 70, fileinfo_tmp
DEBUGF 1, "Parsing result (%u bytes)\n", edx
; first, find end of headers
.next_byte:
cmp dword[edi], 0x0a0d0a0d
je .end_of_headers
inc edi
dec edx
ja .next_byte
DEBUGF 1, "Uh-oh, there's no end of header!\n"
; no end of headers. it's an error. let client see all those headers.
ret
.end_of_headers:
; here we look at headers and search content-length or transfer-encoding headers
DEBUGF 1, "Found end of header\n"
sub edi, [buf_ptr]
add edi, 4
mov [body_pos], edi ; store position where document body starts
mov [is_chunked], 0
; find content-length in headers
; not good method, but should work for 'Content-Length:'
mov esi, [buf_ptr]
mov edi, s_contentlength
mov ebx, [body_pos]
xor edx, edx ; 0
.cl_next:
mov al, [esi]
cmp al, [edi + edx]
jne .cl_fail
inc edx
cmp edx, len_contentlength
je .cl_found
jmp .cl_incr
.cl_fail:
xor edx, edx ; 0
.cl_incr:
inc esi
dec ebx
je .cl_error
jmp .cl_next
.cl_error:
DEBUGF 1, "content-length not found\n"
; find 'chunked'
; äà , ÿ êîïèðóþ êîä, ýòî óæà ñÃî, Ãî ìÃÃ¥ õî÷åòñÿ, ÷òîáû ïîñêîðåå çà ðà áîòà ëî
; à òà ì óæ îòðåôà êòîðþ
mov esi, [buf_ptr]
mov edi, s_chunked
mov ebx, [body_pos]
xor edx, edx ; 0
.ch_next:
mov al, [esi]
cmp al, [edi + edx]
jne .ch_fail
inc edx
cmp edx, len_chunked
je .ch_found
jmp .ch_incr
.ch_fail:
xor edx, edx ; 0
.ch_incr:
inc esi
dec ebx
je .ch_error
jmp .ch_next
.ch_error:
; if neither of the 2 headers is found, it's an error
; DEBUGF 1, "transfer-encoding: chunked not found\n"
mov eax, [pos]
sub eax, [body_pos]
jmp .write_final_size
.ch_found:
mov [is_chunked], 1
mov eax, [body_pos]
add eax, [buf_ptr]
sub eax, 2
mov [prev_chunk_end], eax
jmp parse_chunks
.cl_found:
call read_number ; eax = number from *esi
DEBUGF 1, "Content length: %u\n", eax
.write_final_size:
mov ebx, [buf_size]
sub ebx, [body_pos]
cmp eax, ebx
jbe .size_ok
sub eax, ebx
DEBUGF 2, "%u bytes of data are missing!\n", eax
mov eax, ebx
.size_ok:
mov [final_size], eax
mov ebx, [body_pos]
add ebx, [buf_ptr]
mov [final_buffer], ebx
ret
parse_chunks:
DEBUGF 1, "parse chunks\n"
; we have to look through the data and remove sizes of chunks we see
; 1. read size of next chunk
; 2. if 0, it's end. if not, continue.
; 3. make a good buffer and copy a chunk there
xor eax, eax
mov [final_buffer], eax ; 0
mov [final_size], eax ; 0
.read_size:
mov eax, [prev_chunk_end]
mov ebx, eax
sub ebx, [buf_ptr]
mov edx, eax
DEBUGF 1, "rs "
cmp ebx, [pos]
jae chunks_end ; not good
call read_hex ; in: eax=pointer to text. out:eax=hex number, ebx=end of text.
cmp eax, 0
jz chunks_end
add ebx, 1
mov edx, ebx ; edx = size of size of chunk
add ebx, eax
mov [prev_chunk_end], ebx
DEBUGF 1, "sz "
; do copying: from buf_ptr+edx to final_buffer+prev_final_size count eax
; realloc final buffer
push eax
push edx
push dword [final_size]
add [final_size], eax
mcall 68, 20, [final_size], [final_buffer]
mov [final_buffer], eax
DEBUGF 1, "re "
pop edi
pop esi
pop ecx
; add [pos], ecx
add edi, [final_buffer]
DEBUGF 1, "cp "
rep movsb
jmp .read_size
chunks_end:
DEBUGF 1, "chunks end\n"
mcall 68, 13, [buf_ptr] ; free old buffer
ret
; reads content-length from [edi+ecx], result in eax
read_number:
push ebx
xor eax, eax
xor ebx, ebx
.next:
mov bl, [esi]
cmp bl, '0'
jb .not_number
cmp bl, '9'
ja .not_number
sub bl, '0'
shl eax, 1
lea eax, [eax + eax * 4] ; eax *= 10
add eax, ebx
.not_number:
cmp bl, 13
je .done
inc esi
jmp .next
.done:
pop ebx
ret
; reads hex from eax, result in eax, end of text in ebx
read_hex:
add eax, 2
mov ebx, eax
mov eax, [ebx]
mov [deba], eax
xor eax, eax
xor ecx, ecx
.next:
mov cl, [ebx]
inc ebx
cmp cl, 0x0d
jz .done
or cl, 0x20
sub cl, '0'
jb .bad
cmp cl, 0x9
jbe .adding
sub cl, 'a'-'0'-10
cmp cl, 0x0a
jb .bad
cmp cl, 0x0f
ja .bad
.adding:
shl eax, 4
or eax, ecx
.bad:
jmp .next
.done:
ret
;****************************************************************************
; Function
; open_socket
;
; Description
; opens the socket
;
;****************************************************************************
open_socket:
DEBUGF 1, "opening socket\n"
mov edx, 80
cmp byte [proxyAddr], 0
jz @f
mov eax, [proxyPort]
xchg al, ah
mov [server_port], ax
@@:
mcall socket, AF_INET4, SOCK_STREAM, 0
mov [socketnum], eax
mcall connect, [socketnum], sockaddr1, 18
ret
;****************************************************************************
; Function
; parse_url
;
; Description
; parses the full url typed in by the user into a web address ( that
; can be turned into an IP address by DNS ) and the page to display
; DNS will be used to translate the web address into an IP address, if
; needed.
; url is at document_user and will be space terminated.
; web address goes to webAddr and is space terminated.
; ip address goes to server_ip
; page goes to document and is space terminated.
;
; Supported formats:
; <protocol://>address<page>
; <protocol> is optional, removed and ignored - only http supported
; <address> is required. It can be an ip address or web address
; <page> is optional and must start with a leading / character
;
;****************************************************************************
parse_url:
; First, reset destination variables
mov al, ' '
mov edi, document
mov ecx, URLMAXLEN
rep stosb
mov edi, webAddr
mov ecx, URLMAXLEN
rep stosb
mov al, '/'
mov [document], al
mov esi, document_user
; remove any leading protocol text
mov ecx, URLMAXLEN
mov ax, '//'
pu_000:
cmp [esi], byte ' ' ; end of text?
je pu_002 ; yep, so not found
cmp [esi], ax
je pu_001 ; Found it, so esi+2 is start
inc esi
loop pu_000
pu_002:
; not found, so reset esi to start
mov esi, document_user-2
pu_001:
add esi, 2
mov ebx, esi ; save address of start of web address
mov edi, document_user + URLMAXLEN ; end of string
; look for page delimiter - it's a '/' character
pu_003:
cmp [esi], byte ' ' ; end of text?
je pu_004 ; yep, so none found
cmp esi, edi ; end of string?
je pu_004 ; yep, so none found
cmp [esi], byte '/' ; delimiter?
je pu_005 ; yep - process it
inc esi
jmp pu_003
pu_005:
; copy page to document address
; esi = delimiter
push esi
mov ecx, edi ; end of document_user
mov edi, document
pu_006:
movsb
cmp esi, ecx
je pu_007 ; end of string?
cmp [esi], byte ' ' ; end of text
; je pu_007 ; äçåÃ-à ññåìáëåð
; jmp pu_006 ; ÃÃ¥ Ãà äî ïëîäèòü ñóùÃîñòè ïî Ãà ïðà ñÃó
jne pu_006
pu_007:
pop esi ; point esi to '/' delimiter
pu_004:
; copy web address to webAddr
; start in ebx, end in esi-1
mov ecx, esi
mov esi, ebx
mov edi, webAddr
@@:
movsb
cmp esi, ecx
jne @r
mov byte [edi], 0
pu_009:
; For debugging, display resulting strings
DEBUGF 2, "Downloadng %s\n", document_user
; Look up the ip address, or was it specified?
mov al, [proxyAddr]
cmp al, 0
jnz pu_015
mov al, [webAddr]
pu_015:
cmp al, '0'
jb pu_010 ; Resolve address
cmp al, '9'
ja pu_010 ; Resolve address
DEBUGF 1, "GotIP\n"
; Convert address
; If proxy is given, get proxy address instead of server
mov esi, proxyAddr-1
cmp byte[esi+1], 0
jne pu_020
mov esi, webAddr-1
pu_020:
mov edi, server_ip
xor eax, eax
ip1:
inc esi
cmp [esi], byte '0'
jb ip2
cmp [esi], byte '9'
ja ip2
imul eax, 10
movzx ebx, byte [esi]
sub ebx, 48
add eax, ebx
jmp ip1
ip2:
mov [edi], al
xor eax, eax
inc edi
cmp edi, server_ip+3
jbe ip1
ret
pu_010:
DEBUGF 1, "Resolving %s\n", webAddr
; resolve name
push esp ; reserve stack place
push esp ; fourth parameter
push 0 ; third parameter
push 0 ; second parameter
push webAddr
call [getaddrinfo]
pop esi
test eax, eax
jnz .fail_dns
; fill in ip
mov eax, [esi + addrinfo.ai_addr]
mov eax, [eax + sockaddr_in.sin_addr]
mov [server_ip], eax
; free allocated memory
push esi
call [freeaddrinfo]
DEBUGF 1, "Resolved to %u.%u.%u.%u\n", [server_ip]:1, [server_ip + 1]:1, [server_ip + 2]:1, [server_ip + 3]:1
ret
.fail_dns:
DEBUGF 1, "DNS resolution failed\n"
mov [server_ip], 0
ret
;***************************************************************************
; Function
; append_proxy_auth_header
;
; Description
; Append header to HTTP request for proxy authentification
;
;***************************************************************************
append_proxy_auth_header:
mov esi, proxy_auth_basic
mov ecx, proxy_auth_basic_end - proxy_auth_basic
rep movsb
; base64-encode string <user>:<password>
mov esi, proxyUser
apah000:
lodsb
test al, al
jz apah001
call encode_base64_byte
jmp apah000
apah001:
mov al, ':'
call encode_base64_byte
mov esi, proxyPassword
apah002:
lodsb
test al, al
jz apah003
call encode_base64_byte
jmp apah002
apah003:
call encode_base64_final
ret
encode_base64_byte:
inc ecx
shl edx, 8
mov dl, al
cmp ecx, 3
je ebb001
ret
ebb001:
shl edx, 8
inc ecx
ebb002:
rol edx, 6
xor eax, eax
xchg al, dl
mov al, [base64_table+eax]
stosb
loop ebb002
ret
encode_base64_final:
mov al, 0
test ecx, ecx
jz ebf000
call encode_base64_byte
test ecx, ecx
jz ebf001
call encode_base64_byte
mov byte [edi-2], '='
ebf001:
mov byte [edi-1], '='
ebf000:
ret
; *********************************************
; ******* WINDOW DEFINITIONS AND DRAW ********
; *********************************************
draw_window:
mcall 12, 1
mcall 48, 3, sc, 40 ;get system colors
mov edx, [sc.work]
or edx, 0x34000000
mcall 0, <50, 370>, <350, 140>, , 0, title ;draw window
mov ecx, [sc.work_text]
or ecx, 80000000h
mcall 4, <14, 14>, , type_pls ;"URL:"
edit_boxes_set_sys_color edit1, editboxes_end, sc
stdcall [edit_box_draw], edit1
; RELOAD
mcall 8, <90, 68>, <54, 16>, 22, [sc.work_button]
; STOP
mcall , <166, 50>, <54, 16>, 24
; SAVE
mcall , <224, 54>, , 26
; BUTTON TEXT
mov ecx, [sc.work_button_text]
or ecx, 80000000h
mcall 4, <102, 59>, , button_text
mcall 12, 2 ; end window redraw
ret
;-----------------------------------------------------------------------------
; Data area
;-----------------------------------------------------------------------------
align 4
@IMPORT:
library libini, 'libini.obj', \
box_lib, 'box_lib.obj', \
network, 'network.obj'
import libini, \
ini.get_str, 'ini_get_str', \
ini.get_int, 'ini_get_int'
import box_lib, \
edit_box_draw, 'edit_box', \
edit_box_key, 'edit_box_key', \
edit_box_mouse, 'edit_box_mouse'
import network,\
getaddrinfo, 'getaddrinfo',\
freeaddrinfo, 'freeaddrinfo',\
inet_ntoa, 'inet_ntoa'
;---------------------------------------------------------------------
fileinfo dd 2, 0, 0
final_size dd 0
final_buffer dd 0
db '/rd/1/.download', 0
body_pos dd 0
buf_size dd 0
buf_ptr dd 0
deba dd 0
db 0
;---------------------------------------------------------------------
mouse_dd dd 0
edit1 edit_box 295, 48, 10, 0xffffff, 0xff, 0x80ff, 0, 0x8000, URLMAXLEN, document_user, mouse_dd, ed_focus+ed_always_focus, 7, 7
editboxes_end:
;---------------------------------------------------------------------
include_debug_strings
;---------------------------------------------------------------------
type_pls db 'URL:', 0
button_text db 'DOWNLOAD STOP RESAVE', 0
download_complete db 'File saved as /rd/1/.download', 0
title db 'HTTP Downloader', 0
;---------------------------------------------------------------------
s_contentlength db 'Content-Length:'
len_contentlength = 15
s_chunked db 'Transfer-Encoding: chunked'
len_chunked = $ - s_chunked
string0: db 'GET '
stringh db ' HTTP/1.1', 13, 10, 'Host: '
stringh_end:
proxy_auth_basic db 13, 10, 'Proxy-Authorization: Basic '
proxy_auth_basic_end:
connclose db 13, 10, 'User-Agent: Kolibrios Downloader', 13, 10, 'Connection: Close', 13, 10, 13, 10
connclose_end:
base64_table db 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz'
db '0123456789+/'
inifile db '/sys/settings/network.ini', 0
sec_proxy:
key_proxy db 'proxy', 0
key_proxyport db 'port', 0
key_user db 'user', 0
key_password db 'password', 0
sockaddr1:
dw AF_INET4
server_port dw 0x5000 ; 80
server_ip dd 0
rb 10
proxyPort dd 80
shared_name dd 0
;---------------------------------------------------------------------
document_user db 'http://', 0
;---------------------------------------------------------------------
IM_END:
;---------------------------------------------------------------------
rb URLMAXLEN-(IM_END - document_user)
;---------------------------------------------------------------------
sc system_colors
;---------------------------------------------------------------------
align 4
document rb URLMAXLEN
;---------------------------------------------------------------------
align 4
webAddr rb URLMAXLEN+1
;---------------------------------------------------------------------
pos dd ?
socketnum dd ?
is_chunked dd ?
prev_chunk_end dd ?
cur_chunk_size dd ?
;---------------------------------------------------------------------
params rb 1024
request rb 256
proxyAddr rb 256
proxyUser rb 256
proxyPassword rb 256
I_END: