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;;  Copyright (C) Vasiliy Kosenko (vkos), 2009                                                    ;;

;;  Launch is free software: you can redistribute it and/or modify it under the terms of the GNU  ;;

;;  General Public License as published by the Free Software Foundation, either version 2         ;;

;;  of the License, or (at your option) any later version.                                        ;;

;;                                                                                                ;;

;;  Launch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without   ;;

;;  even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU ;;

;;  General Public License for more details.                                                      ;;

;;                                                                                                ;;

;;  You should have received a copy of the GNU General Public License along with Launch.          ;;

;;  If not, see .                                                   ;;

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;;  Launch finds program in search dirictories and runs it.                                       ;;

;;  For more details see readme.txt                                                               ;;

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APP_NAME fix 'Launch'

APP_VERSION fix '0.1.4'

use32

org 0x0

db 'MENUET01'

dd 0x01

dd START

dd APP_END

dd MEM_END

dd APP_STACK

dd args

dd path

define PATH_MAX_LEN 1024

define DEBUG_MAX_LEN 8

define DEBUG_DEFAULT debug_no_num

define BUFF_SIZE 1024

include 'macros.inc'

include 'proc32.inc'

include 'libio.inc'

include 'mem.inc'

include 'dll.inc'

START:

	;; Initialize process heap

	mcall 68,11

	test eax, eax

	jz exit

	;; Import modules

	stdcall dll.Load,importTable

	test eax, eax

	jnz exit

read_ini:

	;; First read config in /sys/etc

	invoke ini.get_str, etc_cfg, cfg_main, cfg_path, search_path, PATH_MAX_LEN, empty_str

	;; Next, read config from current directory

	;; Find end of path string

.find_path_eol:

	mov edi, path

	mov ecx, PATH_MAX_LEN

	xor al, al

	cld

	repne scasb

	;; Append ext to run path (NOTE: this work only when config file has name .cfg and ext size is dword)

	mov eax, dword [cfg_ext]

	dec edi

	mov dword [edi], eax

	mov byte [edi+5], 0

	;; Currently there is no checking for repeating pathes, so we should only concatenate two strings

	;; So we need to find end of current search_path string

.find_search_eol:

	mov edi, search_path

	mov ecx, PATH_MAX_LEN

	xor al, al

	;cld

	repne scasb

	dec edi

	;; Now we need to correct buffer length

	mov eax, path+PATH_MAX_LEN

	sub eax, edi

	;; Read ini

	invoke ini.get_str, path, cfg_main, cfg_path, edi, PATH_MAX_LEN, empty_str

read_ini_debug:

	;; Read debug options from config files

	invoke ini.get_str, etc_cfg, cfg_debug, cfg_debug, debug_option, DEBUG_MAX_LEN, DEBUG_DEFAULT

	invoke ini.get_str, path, cfg_debug, cfg_debug, debug_option, DEBUG_MAX_LEN, debug_option

	;; Now convert debug_option from string to number of debug mode

	mov ebx, modes-4

.convert:

	mov al, byte [debug_option]

	cmp al, 10

	jbe .converted

.convert_nxt:

	add ebx, 4

	mov esi, dword [ebx]

	test esi, esi

	je .set_default 			;; String is incorrect, so set default

	mov edi, debug_option

.conv_loop:

	mov al, byte [esi]

	cmp al, byte [edi]

	jne .convert_nxt			;; Not equal, so try next

	test al, al

	je .found				;; Equal, end of loop

	inc esi

	inc edi

	jmp .conv_loop

.set_default:

	mov al, byte [DEBUG_DEFAULT]

	mov byte [debug_option], al

	jmp .converted

.found:

	sub ebx, modes

	shr ebx, 2

	add ebx, modes_nums

	mov al, byte [ebx]

	mov byte [debug_option], al

.converted:

	dec al

	test al, al

	je .ok

	dec al

	test al, al

	je .con_init

.noconsole:

	mov al, 1

	mov byte [debug_option], al

	jmp .ok

.con_init:

	stdcall dll.Load, consoleImport

	test eax, eax

	jnz .noconsole

	invoke con.init, -1, -1, -1, -1, WinTitle

.read_level:

	invoke ini.get_int, etc_cfg, cfg_debug, cfg_level, 0

	invoke ini.get_int, path, cfg_debug, cfg_level, eax

	mov dword [debug_level], eax

.ok:

parse_args:

	;; Now parse command line arguments

	;; TODO: use optparse library

	;; Currently the only argument to parse is program name

.skip_spaces:

	mov ecx, -1

	mov edi, args

	mov al, ' '

	xor bl, bl

	;cld

	repe scasb

	push edi

	mov ecx, -1

@@:

	scasb

	je @f

	xchg al, bl

	dec edi

	scasb

	jne @b

@@:

	mov dword [prog_args], edi

	pop edi

	dec edi

	;; Now edi = program name

	;; End of preparations! Now we can find file and launch it.

search_file:

	push edi

	mov esi, search_path

	xchg esi, [esp]

.loop:

	or dl, dl

	je .prn_dbg

	xor dl, dl

	jmp .prn_end

.prn_dbg:

	push eax

	mov al, byte [debug_option]

	dec al

	test al, al

	je .prn_stp

	mov eax, dword [debug_level]

	or eax, eax

	je .prn_stp

	dec eax

	or eax, eax

	je .prn_1

.prn_1:

	cinvoke con.printf, message_dbg_not_found, buff

.prn_stp:

	pop eax

.prn_end:

	xor eax, eax					;; When we check is proramme launched we are checking for eax

	xchg esi, [esp]

	mov edi, buff

.copy_path:

	lodsb

	cmp al, ';'

	je .copy_file

	or al, al

	je exit

	stosb

	jmp .copy_path

.copy_file:

	xchg esi, [esp]

	push esi

.cp_file_loop:

	lodsb

	or al, al

	je .copy_end

	cmp al, ' '

	je .copy_end

	stosb

	jmp .cp_file_loop

.copy_end:

	pop esi

	xor al, al

	stosb

	;; Try to launch

	mov dword [LaunchStruct.Function], 7

	push dword [prog_args]

	pop dword [LaunchStruct.Arguments]

	mov dword [LaunchStruct.Flags], 0

	mov dword [LaunchStruct.Zero], 0

	mov dword [LaunchStruct.FileNameP], buff

	mcall 70, LaunchStruct

	cmp eax, 0

	jl .loop

exit:

	push eax

	;; If console is present we should write some info

	mov al, byte [debug_option]

	cmp al, 2

	je .write_console

.close:

	mcall -1

.write_console:

	pop eax

	test eax, eax

	jz .write_error

.write_launched:

	cinvoke con.printf, message_ok, buff, eax, eax

	jmp .wr_end

.write_error:

	pop edi

	cinvoke con.printf, message_error, edi

.wr_end:

	invoke con.exit, 0

	jmp .close

align 16

importTable:

library 						\

	libini, 'libini.obj';,                           \

;        libio, 'libio.obj',                            \

import	libini, \

	ini.get_str  ,'ini.get_str', \

\;        ini.set_str  ,'ini.set_str', \

	ini.get_int  ,'ini.get_int';, \

\;        ini.set_int  ,'ini.set_int', \

;        ini.get_color,'ini.get_color', \

;        ini.set_color,'ini.set_color'

;import  libio, \

;        file.find_first,'file.find_first', \

;        file.find_next ,'file.find_next', \

;        file.find_close,'file.find_close', \

;        file.size      ,'file.size', \

;        file.open      ,'file.open', \

;        file.read      ,'file.read', \

;        file.write     ,'file.write', \

;        file.seek      ,'file.seek', \

;        file.tell      ,'file.tell', \

;        file.eof?      ,'file.eof?', \

;        file.truncate  ,'file.truncate', \

;        file.close     ,'file.close'

consoleImport:

library 						\

	conlib, 'console.obj'

import conlib, \

	con.init,	  'con.init',\

	con.exit,	  'con.exit',\

	con.printf,	  'con.printf';,\

;        con.write_asciiz, 'con.write_asciiz'

align 16

APP_DATA:

WinTitle:

	db APP_NAME, ' ', APP_VERSION, 0

message_dbg_not_found:

	db '%s not found', 10, 0

message_error:

	db 'File (%s) not found!', 0

message_ok:

	db '%s loaded succesfully. PID: %d (0x%X)'

empty_str:

	db 0

etc_cfg:

	db '/sys/etc/'

cfg_name:

	db 'launch'

cfg_ext:

	db '.cfg', 0

cfg_main:

	db 'main', 0

cfg_path:

	db 'path', 0

cfg_debug:

	db 'debug', 0

cfg_level:

	db 'level', 0

modes:

	dd debug_no

	dd debug_console

	dd 0

debug_no:

	db 'no', 0

debug_console:

	db 'console', 0

modes_nums:

debug_no_num:

	db 1

debug_console_num:

	db 2

debug_level:

	dd 0

LaunchStruct FileInfoRun

args: db 0

APP_END:

rb 255

prog_args:

	rd 1

path:

	rb 1024

search_path:

	rb PATH_MAX_LEN

debug_option:

	rb DEBUG_MAX_LEN

buff:

	rb BUFF_SIZE

rb 0x1000	;; 4 Kb stack

APP_STACK:

MEM_END: