322 lines
9.6 KiB
NASM
322 lines
9.6 KiB
NASM
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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; ;
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; BROWSER for KolibriOS ;
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; ;
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; Compile with FASM ;
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; ;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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; It's a work in progress but I (esevece) commit it, because if I don't continue developing it someone can continue.
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; Please, keep the code clean
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; The header
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use32 ; Tell compiler to use 32 bit instructions
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org 0x0 ; the base address of code, always 0x0
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db 'MENUET01'
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dd 0x01
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dd START
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dd I_END
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dd 0x100000
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dd 0x7fff0
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dd 0, 0
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; The code area
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;include 'macros.inc'
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START: ; start of execution
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call draw_window ; draw the window
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; After the window is drawn, it's practical to have the main loop.
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; Events are distributed from here.
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event_wait:
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mov eax, 10 ; function 10 : wait until event
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int 0x40 ; event type is returned in eax
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cmp eax, 1 ; Event redraw request ?
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je redraw ; Expl.: there has been activity on screen and
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; parts of the applications has to be redrawn.
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cmp eax, 2 ; Event key in buffer ?
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je key ; Expl.: User has pressed a key while the
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; app is at the top of the window stack.
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cmp eax, 3 ; Event button in buffer ?
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je button ; Expl.: User has pressed one of the
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; applications buttons.
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jmp event_wait
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; The next section reads the event and processes data.
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redraw: ; Redraw event handler
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call draw_window ; We call the window_draw function and
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jmp event_wait ; jump back to event_wait
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key: ; Keypress event handler
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mov eax, 2 ; The key is returned in ah. The key must be
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int 0x40 ; read and cleared from the system queue.
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jmp event_wait ; Just read the key, ignore it and jump to event_wait.
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button: ; Buttonpress event handler
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mov eax,17 ; The button number defined in window_draw
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int 0x40 ; is returned to ah.
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cmp ah,1 ; button id=1 ?
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jne noclose
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mov eax,-1 ; Function -1 : close this program
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int 0x40
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noclose:
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cmp ah, 2 ; call fetch_thread
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jne no_fetch_thread
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call fetch_thread
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jmp event_wait ; This is for ignored events, useful at development
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no_fetch_thread:
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jmp event_wait
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; FETCHER
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FETCH:
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mov ecx, 1000
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get_free_port:
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inc ecx
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mov eax, 53
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mov ebx, 9
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int 0x40
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cmp eax, 0 ; is port used?
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jz get_free_port
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open_socket:
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mov eax, 53
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mov ebx, 5
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mov edx, 80
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mov esi, 0x0417042E ; 46.4.23.4 (kolibrios.org), only for try
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mov edi, 1
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int 0x40
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mov [socket], eax
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cmp [socket], -1 ; error?
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jne status_socket
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ret
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status_socket:
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mov eax, 53
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mov ebx, 6
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mov ecx, [socket]
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int 0x40
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cmp eax, 4 ; connected?
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jne status_socket
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send_request:
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.concat_request:
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mov edi, request
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mov ebx, 0 ; request_length
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mov esi, request_first_line
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._first_line:
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movsb
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inc ebx ; request_length
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cmp byte [edi], 0
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jne ._first_line
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mov esi, request_second_line
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._second_line:
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movsb
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inc ebx ; request_length
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cmp byte [edi], 0
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jne ._second_line
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mov esi, host
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._second_line_host:
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movsb
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inc ebx ; request_length
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cmp byte [edi], 0
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jne ._second_line_host
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mov esi, request_third_line
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._third_line:
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movsb
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inc ebx ; request_length
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cmp byte [edi], 0
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jne ._third_line
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mov [request_length], ebx
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.write_to_socket:
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mov eax, 53
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mov ebx, 7
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mov ecx, [socket]
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mov edx, [request_length]
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mov esi, request
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int 0x40
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cmp eax, -1 ; error?
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je .write_to_socket
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.poll_socket:
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mov eax, 53
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mov ebx, 2
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mov ecx, [socket]
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int 0x40
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cmp eax, 0
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jne .read_socket
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; only for test purposes
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mov eax, 63
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mov ebx, 1
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mov cl, 's'
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int 0x40
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.status_socket:
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mov eax, 53
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mov ebx, 6
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mov ecx, [socket]
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int 0x40
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cmp eax, 4
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jne end_of_request
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.read_socket:
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mov eax, 53
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mov ebx, 11
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mov ecx, [socket]
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mov edx, [buffer]
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mov esi, 4096
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int 0x40
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; only for test purposes
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mov eax, 63
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mov ebx, 1
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mov cl, 'p'
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int 0x40
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jmp .poll_socket
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end_of_request:
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.close_socket:
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mov eax, 53
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mov ebx, 8
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mov ecx, [socket]
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int 0x40
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; only for test purposes
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mov eax, 63
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mov ebx, 1
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mov cl, 'b'
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int 0x40
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jmp terminate_thread
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fetch_thread:
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cmp [thread_id], 0
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jne terminate_thread
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mov eax, 51
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mov ebx, 1
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mov ecx, FETCH
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mov edx, [thread_stack]
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int 0x40
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jmp event_wait
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no_new_thread:
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ret
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terminate_thread:
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mov eax, 18
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mov ebx, 18
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mov ecx, [thread_id]
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int 0x40
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cmp eax, 0
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jne terminate_thread
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mov [thread_id], 0
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ret
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thread_stack dd 0x80000
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thread_id dd 0x0
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; *********************************************
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; ****** WINDOW DEFINITIONS AND DRAW ********
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; *********************************************
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;
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; The static window parts are drawn in this function. The window canvas can
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; be accessed later from any parts of this code (thread) for displaying
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; processes or recorded data, for example.
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;
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; The static parts *must* be placed within the fn 12 , ebx = 1 and ebx = 2.
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draw_window:
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mov eax, 12 ; function 12: tell os about windowdraw
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mov ebx, 1 ; 1, start of draw
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int 0x40
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mov eax, 0 ; function 0 : define and draw window
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mov ebx, 100 * 65536 + 300 ; [x start] *65536 + [x size]
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mov ecx, 100 * 65536 + 120 ; [y start] *65536 + [y size]
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mov edx, 0x14ffffff ; color of work area RRGGBB
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; 0x02000000 = window type 4 (fixed size, skinned window)
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mov esi, 0x808899ff ; color of grab bar RRGGBB
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; 0x80000000 = color glide
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mov edi, title
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int 0x40
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; Fetch button
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mov eax, 8
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mov ebx, 25 * 65536 + 128
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mov ecx, 88 * 65536 + 20
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mov edx, 2
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mov esi, 0x6677cc
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int 0x40
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mov ebx, 25 * 65536 + 35 ; draw info text with function 4
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mov ecx, 0x224466
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mov edx, text
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mov esi, 40
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mov eax, 4
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.newline: ; text from the DATA AREA
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int 0x40
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add ebx, 10
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add edx, 40
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cmp byte[edx], 0
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jne .newline
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mov eax, 12 ; function 12:tell os about windowdraw
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mov ebx, 2 ; 2, end of draw
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int 0x40
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ret
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; *********************************************
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; ************* DATA AREA *****************
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; *********************************************
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;
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; Data can be freely mixed with code to any parts of the image.
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; Only the header information is required at the beginning of the image.
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text db "It look's like you have just compiled "
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db "your first program for KolibriOS. "
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db " "
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db "Congratulations! ", 0
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title db "KolibriOS Browser", 0
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socket dd 0
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socket_status dd 0
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server_ip db 046,004,023,004
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server_port db 0,0
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request_first_line db 'GET / HTTP/1.1',0
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request_second_line db 13,10,'Host: ',0
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request_third_line db 13,10,'Connection: close',13,10,13,10,0
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request db 0
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request_length dd 0
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host db 'kolibrios.org',0
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buffer dd 0
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I_END:
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; The area after I_END is free for use as the application memory,
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; just avoid the stack.
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;
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; Application memory structure, according to the used header, 1 Mb.
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;
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; 0x00000 - Start of compiled image
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; I_END - End of compiled image
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;
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; + Free for use in the application
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;
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; 0x7ff00 - Start of stack area
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; 0x7fff0 - End of stack area - defined in the header
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;
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; + Free for use in the application
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;
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; 0xFFFFF - End of freely useable memory - defined in the header
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;
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; All of the the areas can be modified within the application with a
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; direct reference.
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; For example, mov [0x80000],byte 1 moves a byte above the stack area.
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