forked from KolibriOS/kolibrios
413 lines
7.8 KiB
NASM
413 lines
7.8 KiB
NASM
; <--- description --->
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; compiler: FASM
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; name: Clipboard server/daemon
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; version: 0.2
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; author: barsuk
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; <--- include all MeOS stuff --->
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include "lang.inc"
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include "..\..\..\MACROS.INC"
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; <--- start of MenuetOS application --->
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MEOS_APP_START
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;define DEBUG TRUE
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define DEBUG FALSE
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include "bdebug.inc"
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DEFAULT_SIZE = 0x10010 ; 64K + size of headers
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MAX_SIZE = 0x01000000 ; 16 M
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MAX_FORMAT = 16
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DELAY = 10 ; 1/10 sec between sending attempts
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ATTEMPT = 5 ; number of sending attempts
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; <--- start of code --->
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CODE
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; ¢®-¯¥à¢ëå, ¤® 㡨âì ¢á¥ @clip, ª ª¨¥ ©¤ãâáï:
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; ¤¥¬® ¡ãä¥à ®¡¬¥ ¤®«¦¥ ¡ëâì ⮫쪮 ®¤¨!
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; ¨ ¨¬ ®ª ¦¥âáï á ¬ë© ¬®«®¤®© ¨§ ¤¥¬®®¢...
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mov ecx, 2 ; ¯¥à¢ë© ®¬¥à ᫮⠤«ï ¯à®¢¥àª¨
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mov ebp, info
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mov ebx, ebp
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mov edx, 18
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.next_process:
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mov eax, 9
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int 0x40
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cmp dword [ebx + 10], '@CLI'
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jnz .differ
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cmp byte [ebx + 14], 'P'
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jnz .differ
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.similar:
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xchg eax, edx
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mov ebx, 2
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int 0x40
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mov ebx, ebp
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xchg eax, edx
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.differ:
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inc ecx
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cmp ecx, eax
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jae .done ; process not found
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jmp .next_process
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.done:
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mov eax, 68 ; init heap
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mov ebx, 11
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int 0x40
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mov eax, 66 ; set hotkey: Ctrl-Alt-V
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mov ebx, 4
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mov ecx, 47
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mov edx, 0x110 ; 0x110
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int 0x40
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print "set hot key (1 bad)"
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pregs
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mov ebp, DEFAULT_SIZE
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mov eax, 68 ; get memory for buffer
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mov ebx, 12
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mov ecx, ebp
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int 0x40
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mov esi, IPC_buffer
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mov [esi], eax
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mov eax, 60 ; define buffer for IPC
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mov ebx, 1
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mov ecx, [esi]
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mov edx, ebp
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int 0x40
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mov eax, 40
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mov ebx, 01000010b ;
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int 0x40
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wait_event: ; main cycle
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mov eax, [IPC_buffer]
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mov dword [eax], 0 ; unlock buffer
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mov dword [eax + 4], 8
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mov eax, 10 ; wait
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int 0x40
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print "event"
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pregs
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;dec eax
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;dec eax
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cmp eax, 2
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jnz ipc_event
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print "hotkey"
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mov eax, 2
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int 0x40
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pregs
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cmp ah, 47 ; "v" up
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jnz wait_event
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print "hotkey v up"
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; it is hotkey
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mov eax, 1
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mov ebx, eax
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call find_format
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pregs
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cmp eax, -1
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jz wait_event
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mov esi, [data_buffer + eax * 4]
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mov edi, [data_size + eax * 4]
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mov ecx, 2
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print "ping"
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.next:
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mov eax, 72
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movzx edx, byte [esi]
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int 0x40 ; here we should pause if eax = 1
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pregs
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inc esi
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dec edi
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jnz .next
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jmp wait_event
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ipc_event:
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; we get an IPC message
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print "recv. "
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mov eax, [IPC_buffer]
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mov dword [eax], 1 ; lock buffer
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mov dword [eax + 4], 8
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dph1 dword [eax] ; lock
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dph1 dword [eax + 4] ; current used size
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dph1 dword [eax + 8] ; pid
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dph1 dword [eax + 12] ; len
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print ""
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dph1 dword [eax + 16] ; cmd << 16 | fmt
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dph1 dword [eax + 20]
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dph1 dword [eax + 24]
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mov ebx, [eax + 8 + 4]
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cmp ebx, 8
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jb wait_event ; all my messages have 8-byte header
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; so ignore this one
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movzx ecx, word [eax + 8 + 8] ; command
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cmp ecx, 1
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jz command_setsize
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cmp ecx, 2
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jz command_set
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cmp ecx, 3
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jz command_getsize
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cmp ecx, 4
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jz command_get
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cmp ecx, 5
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jz command_delete
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jmp wait_event ; unrecognised command
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command_setsize:
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; the only thing we really need to do here is to grow IPC buffer
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; no changes are done to real buffer of chosen format
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; the bad thing is that IPC buffer grows and never becomes less.
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; i want to fix this in the next version.
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print "set size"
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mov esi, [IPC_buffer_size]
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mov ecx, [eax + 24] ; size
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add ecx, 0x18 ; for headers
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;pregs
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cmp esi, ecx
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jae wait_event
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print "ipc buffer resize from esi to ecx"
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pregs
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mov ebp, MAX_SIZE ; sort of protection. forbid transfer of more
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cmp ecx, ebp ; than 16,7 Mb of data through buffer
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jbe not_much
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mov ecx, ebp
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not_much:
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xchg eax, edi ; edx := [IPC_buffer]
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add ecx, 0x18 ; for headers
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mov [IPC_buffer_size], ecx
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mov eax, 68
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mov ebx, 12
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int 0x40 ; get memory
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print "get mem for new buf, eax"
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pregs
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mov [IPC_buffer], eax
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mov dword [eax + 4], 8
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mov edx, ecx
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mov ecx, eax
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mov eax, 60
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mov ebx, 1
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int 0x40 ; make it IPC buffer
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mov ecx, edi
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mov eax, 68
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mov ebx, 13
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int 0x40 ; free old IPC buffer
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jmp wait_event
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command_set:
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print "set"
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; here we put the data transfered to us to one of internal buffers
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;;;outs eax + 0x18
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movzx eax, word [eax + 18] ; format id
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call find_format
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cmp eax, -1
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jz new_format
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mov edx, eax
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; free old buffer of this format
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mov ecx, [data_buffer + edx * 4]
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mov eax, 68
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mov ebx, 13
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int 0x40
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jmp set_buffer
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new_format:
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mov eax, data_count ; allocate a buffer
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mov edx, [eax]
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inc dword [eax] ; no protection, no checks. very bad :(
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set_buffer:
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mov eax, [IPC_buffer]
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mov ecx, dword [eax + 12]
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sub ecx, 8 ; get length of data itself
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; subtract size of my headers
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;pregs
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mov [data_size + edx * 4], ecx ; save length of data
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mov eax, 68
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mov ebx, 12
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int 0x40
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mov [data_buffer + edx * 4], eax
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; copy data from IPC to new buffer
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mov esi, [IPC_buffer]
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mov ebp, esi
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add esi, 24 ; start of data
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mov edi, eax
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rep movsb ; oh, me knows that it's bad
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mov eax, ebp
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movzx ecx, word [eax + 18] ; format id
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mov [data_format + edx * 4], ecx
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; debug
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; print "set debug"
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; mov eax, [data_buffer + edx * 4]
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; mov ebx, [data_size + edx * 4]
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; mov ecx, [data_format + edx * 4]
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; pregs
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jmp wait_event
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command_delete:
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movzx eax, word [eax + 18] ; format id
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cmp eax, -1
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jz command_clear
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call find_format
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cmp eax, -1
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jz wait_event
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mov ecx, [data_buffer + eax * 4]
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mov [data_format + eax * 4], 0
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mov eax, 68
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mov ebx, 13
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int 0x40
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jmp wait_event
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command_clear:
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mov eax, 68
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mov ebx, 13
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mov edx, data_buffer
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.next:
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mov ecx, [edx]
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jecxz .nofree
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int 0x40
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.nofree:
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mov [edx + data_size - data_buffer], 0
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add edx, 4
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cmp edx, data_format
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jnae .next
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jmp wait_event
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command_getsize:
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print "get size"
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; we should send reply, containing size of data with chosen format id
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movzx eax, word [eax + 18] ; format id
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mov esi, 4
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call find_format
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;pregs
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cmp eax, -1
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jz zero_size
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lea edx, [data_size + eax * 4]
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mov eax, [edx]
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jmp send_getsize
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zero_size:
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mov edx, dw_zero ; send 0 to indicate that the buffer is empty
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send_getsize:
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jmp send_msg
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command_get:
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print "get"
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; we need to send the data
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; [:||||:]
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movzx eax, word [eax + 18] ; format id
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call find_format
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cmp eax, -1
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jz wait_event
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mov edi, eax ; ¥ä¨£
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mov edx, [data_buffer + edi * 4]
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mov esi, [data_size + edi * 4]
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;jmp send_msg
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send_msg:
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; for debugging
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; mov eax, 5
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; mov ebx, DELAY*5
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; int 0x40
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mov ebp, ATTEMPT ; number of attempts to send
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mov eax, [IPC_buffer]
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mov ecx, [eax + 8] ; sender PID
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mov eax, 60
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mov ebx, 2
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int 0x40
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print "send data result eax"
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pregs
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cmp eax, 2
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jz .wait
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cmp eax, 3 ; it is strange..
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jz .wait ; maybe he needs time to resize his buf
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jmp wait_event
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.wait:
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dec ebp
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jz wait_event
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mov eax, 5 ; sleep a bit
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mov ebx, DELAY
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int 0x40
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jmp send_msg
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find_format: ; small function returning number of format
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;print "find format"
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push ebx
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mov ebx, eax ; format id
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and ebx, 0xffff ; it is word
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xor eax, eax
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next:
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cmp [data_format + eax * 4], ebx
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jz found
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inc eax
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cmp eax, MAX_FORMAT
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jb next
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not_found:
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or eax, -1
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found:
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;pregs
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pop ebx
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ret
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; <--- initialised data --->
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DATA
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IPC_buffer dd 0
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IPC_buffer_size dd DEFAULT_SIZE ; initially 64K
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info db 1024 dup(0) ; for process info
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data_buffer dd MAX_FORMAT dup(0) ; buffer for some format
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; (256 formats max)
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data_format dd MAX_FORMAT dup(0) ; format id
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data_size dd MAX_FORMAT dup(0) ; size of buffer
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data_count dd 0 ; number of formats used
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dw_zero dd 0 ; used to tell that
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; we don't have a format
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; <--- uninitialised data --->
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UDATA
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MEOS_APP_END
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; <--- end of MenuetOS application ---> |