Subversion Repositories Kolibri OS

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;;                                                                 ;;

;; Copyright (C) KolibriOS team 2010-2012. All rights reserved.    ;;

;; Distributed under terms of the GNU General Public License       ;;

;;                                                                 ;;

;;  ftpd.asm - FTP Daemon for KolibriOS                            ;;

;;                                                                 ;;

;;  Written by hidnplayr@kolibrios.org                             ;;

;;                                                                 ;;

;;          GNU GENERAL PUBLIC LICENSE                             ;;

;;             Version 2, June 1991                                ;;

;;                                                                 ;;

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

DEBUG                   = 0             ; if set to one, program will run in a single thread

BUFFERSIZE              = 8192

; using multiple's of 4

STATE_CONNECTED         = 0*4

STATE_LOGIN             = 1*4

STATE_LOGIN_FAIL        = 2*4           ; When an invalid username was given

STATE_ACTIVE            = 3*4

TYPE_UNDEF              = 0

TYPE_ASCII              = 00000100b

TYPE_EBDIC              = 00001000b

; subtypes for ascii & ebdic (np = default)

TYPE_NP                 = 00000001b     ; non printable

TYPE_TELNET             = 00000010b

TYPE_ASA                = 00000011b

TYPE_IMAGE              = 01000000b     ; binary data

TYPE_LOCAL              = 10000000b     ; bits per byte must be specified

                                        ; lower 4 bits will hold this value

MODE_NOTREADY           = 0

MODE_ACTIVE             = 1

MODE_PASSIVE_WAIT       = 2

MODE_PASSIVE_OK         = 3

MODE_PASSIVE_FAILED     = 4

PERMISSION_EXEC         = 1b            ; LIST

PERMISSION_READ         = 10b

PERMISSION_WRITE        = 100b

PERMISSION_DELETE       = 1000b

PERMISSION_CD           = 10000b        ; Change Directory

ABORT                   = 1 shl 31

format binary as ""

use32

        db      'MENUET01'      ; signature

        dd      1               ; header version

        dd      start           ; entry point

        dd      i_end           ; initialized size

        dd      mem+0x1000      ; required memory

        dd      mem+0x1000      ; stack pointer

        dd      params          ; parameters

        dd      path            ; path

include '../macros.inc'

purge mov,add,sub

include '../proc32.inc'

include '../dll.inc'

include '../struct.inc'

include '../libio.inc'

include '../network.inc'

macro sendFTP str {

local string, length

        xor     edi, edi

        mcall   send, [ebp + thread_data.socketnum], string, length

iglobal

string db str, 13, 10

length = $ - string

\}

}

include 'commands.inc'

start:

        mcall   68, 11                  ; init heap

        mcall   40, 1 shl 7             ; we only want network events

; load libraries

        stdcall dll.Load, @IMPORT

        test    eax, eax

        jnz     exit

; find path to main settings file (ftpd.ini)

        mov     edi, path               ; Calculate the length of zero-terminated string

        xor     al, al

        mov     ecx, 1024

        repne   scasb

        dec     edi

        mov     esi, str_ini            ; append it with '.ini', 0

        movsd

        movsb

; now create the second path (users.ini)

        std

        mov     al, '/'

        repne   scasb

        lea     ecx, [edi - path + 2]

        cld

        mov     esi, path

        mov     edi, path2

        rep     movsb

        mov     esi, str_users

        movsd

        movsd

        movsw

; initialize console

        invoke  con_start, 1

        invoke  con_init, -1, -1, -1, -1, title

        invoke  ini.get_str, path, str_ftpd, str_ip, ini_buf, 16, 0

        mov     esi, ini_buf

        mov     cl, '.'

        call    ip_to_dword

        mov     [serverip], ebx

        invoke  ini.get_int, path, str_ftpd, str_port, 21

        xchg    al, ah

        mov     [sockaddr1.port], ax

        xchg    al, ah

        invoke  con_printf, str1, eax

        add     esp, 8

        mcall   socket, AF_INET4, SOCK_STREAM, 0

        cmp     eax, -1

        je      sock_err

        mov     [socketnum], eax

        invoke  con_write_asciiz, str2

;        mcall   setsockopt, [socketnum], SOL_SOCKET, SO_REUSEADDR, &yes,

;        cmp     eax, -1

;        je      opt_err

        mcall   bind, [socketnum], sockaddr1, sockaddr1.length

        cmp     eax, -1

        je      bind_err

        invoke  con_write_asciiz, str2

        invoke  ini.get_int, path, str_ftpd, str_conn, 1        ; Backlog (max connections)

        mov     edx, eax

        invoke  con_write_asciiz, str2

        mcall   listen, [socketnum]

        cmp     eax, -1

        je      listen_err

        invoke  con_write_asciiz, str2b

        invoke  ini.get_int, path, str_pasv, str_start, 2000

        mov     [pasv_start], ax

        invoke  ini.get_int, path, str_pasv, str_end, 5000

        mov     [pasv_end], ax

        mov     [alive], 1

mainloop:

        mcall   23, 100                         ; Wait here for incoming connections on the base socket (socketnum)

                                                ; One second timeout, we will use this to check if console is still working

        test    eax, eax                        ; network event?

        jz      .checkconsole

if DEBUG

        jmp     threadstart

else

        mcall   51, 1, threadstart, 0           ; Start a new thread for every incoming connection

                                                ; NOTE: upon initialisation of the thread, stack will not be available!

end if

        jmp     mainloop

  .checkconsole:

        invoke  con_get_flags                   ; Is console still running?

        test    eax, 0x0200

        jz      mainloop

        mcall   close, [socketnum]              ; kill the listening socket

        mov     [alive], 0

        mcall   -1                              ; and exit

        diff16  "threadstart", 0, $

threadstart:

;;;        mcall   68, 11                          ; init heap

        mcall   68, 12, sizeof.thread_data      ; allocate the thread data struct

        test    eax, eax

        je      exit

        lea     esp, [eax + thread_data.stack]  ; init stack

        mov     ebp, eax

        mcall   40, 1 shl 7                     ; we only want network events for this thread

        lea     ebx, [ebp + thread_data.buffer] ; get information about the current process

        or      ecx, -1

        mcall   9

        mov     eax, dword [ebp + thread_data.buffer + 30]              ; PID is at offset 30

        mov     [ebp + thread_data.pid], eax

        invoke  con_set_flags, 0x03

        invoke  con_printf, str8, [ebp + thread_data.pid]               ; print on the console that we have created the new thread successfully

        add     esp, 8                                                  ; balance stack

        invoke  con_set_flags, 0x07

        mcall   accept, [socketnum], sockaddr1, sockaddr1.length        ; time to accept the awaiting connection..

        cmp     eax, -1

        je      thread_exit

        mov     [ebp + thread_data.socketnum], eax

if DEBUG

        mcall   close, [socketnum]                                      ; close the listening socket

end if

        mov     [ebp + thread_data.state], STATE_CONNECTED

        mov     [ebp + thread_data.permissions], 0

        mov     [ebp + thread_data.mode], MODE_NOTREADY

        lea     eax, [ebp + thread_data.buffer]

        mov     [ebp + thread_data.buffer_ptr], eax

        mov     [ebp + thread_data.passivesocknum], -1

        sendFTP "220 Welcome to KolibriOS FTP daemon"

        diff16  "threadloop", 0, $

threadloop:

; Check if our socket is still connected

        mcall   send, [ebp + thread_data.socketnum], 0, 0       ; Try to send zero bytes, if socket is closed, this will return -1

        cmp     eax, -1

        je      thread_exit

        cmp     [alive], 0                                      ; Did main thread take a run for it?

        je      thread_exit

        mcall   10                                              ; Wait for network event

        cmp     [ebp + thread_data.mode], MODE_PASSIVE_WAIT

        jne     .not_passive

        mov     ecx, [ebp + thread_data.passivesocknum]

        lea     edx, [ebp + thread_data.datasock]

        mov     esi, sizeof.thread_data.datasock

        mcall   accept

        cmp     eax, -1

        je      .not_passive

        mov     [ebp + thread_data.datasocketnum], eax

        mov     [ebp + thread_data.mode], MODE_PASSIVE_OK

        mcall   close   ; [ebp + thread_data.passivesocknum]

        mov     [ebp + thread_data.passivesocknum], -1

        invoke  con_write_asciiz, str_datasock

  .not_passive:

        mov     ecx, [ebp + thread_data.socketnum]

        mov     edx, [ebp + thread_data.buffer_ptr]

        mov     esi, sizeof.thread_data.buffer    ;;; FIXME

        mcall   recv

        inc     eax                                     ; error? (-1)

        jz      threadloop

        dec     eax                                     ; 0 bytes read?

        jz      threadloop

        mov     edi, [ebp + thread_data.buffer_ptr]

        add     [ebp + thread_data.buffer_ptr], eax

; Check if we received a newline character, if not, wait for more data

        mov     ecx, eax

        mov     al, 13

        repne   scasb

        jne     threadloop

; We got a command!

        mov     byte [edi + 1], 0                       ; append string with zero byte

        lea     esi, [ebp + thread_data.buffer]

        mov     ecx, [ebp + thread_data.buffer_ptr]

        sub     ecx, esi

        mov     [ebp + thread_data.buffer_ptr], esi     ; reset buffer ptr

        invoke  con_set_flags, 0x02                     ; print received data to console (in green color)

        invoke  con_write_asciiz, str_newline

        invoke  con_write_asciiz, esi

        invoke  con_set_flags, 0x07

        push    threadloop

        jmp     parse_cmd

listen_err:

        invoke  con_set_flags, 0x0c                     ; print errors in red

        invoke  con_write_asciiz, str3

        jmp     done

bind_err:

        invoke  con_set_flags, 0x0c                     ; print errors in red

        invoke  con_write_asciiz, str4

        jmp     done

sock_err:

        invoke  con_set_flags, 0x0c                     ; print errors in red

        invoke  con_write_asciiz, str6

        jmp     done

done:

        invoke  con_exit, 0

exit:

        mcall   -1

thread_exit:

        invoke  con_set_flags, 0x03                             ; print thread info in blue

        invoke  con_printf, str_bye, [ebp + thread_data.pid]    ; print on the console that we are about to kill the thread

        add     esp, 8                                          ; balance stack

        mcall   68, 13, ebp                                     ; free the memory

        mcall   -1                                              ; and kill the thread

; initialized data

title           db 'KolibriOS FTP daemon 0.1', 0

str1            db 'Starting FTP daemon on port %u.', 0

str2            db '.', 0

str2b           db ' OK!',10,0

str3            db 'Listen error',10,0

str4            db 10,'ERROR: local port is already in use.',10,0

;str5            db 'Setsockopt error.',10,10,0

str6            db 'ERROR: Could not open socket.',10,0

str7            db 'Got data!',10,10,0

str8            db 10,'Thread %d created',10,0

str_bye         db 10,'Thread %d killed',10,0

str_logged_in   db 'Login ok',10,0

str_pass_ok     db 'Password ok',10,0

str_pass_err    db 'Password/Username incorrect',10,0

str_pwd         db 'Current directory is "%s"\n',0

str_err2        db 'ERROR: cannot open the directory.',10,0

str_datasock    db 'Passive data socket connected.',10,0

str_notfound    db 'ERROR: file not found.',10,0

str_sockerr     db 'ERROR: socket error.',10,0

str_newline     db 10, 0

str_mask        db '*', 0

str_infinity    db 0xff, 0xff, 0xff, 0xff, 0

months          dd 'Jan '

                dd 'Feb '

                dd 'Mar '

                dd 'Apr '

                dd 'May '

                dd 'Jun '

                dd 'Jul '

                dd 'Aug '

                dd 'Sep '

                dd 'Oct '

                dd 'Nov '

                dd 'Dec '

str_users       db 'users'

str_ini         db '.ini', 0

str_port        db 'port', 0

str_ftpd        db 'ftpd', 0

str_conn        db 'conn', 0

str_ip          db 'ip', 0

str_pass        db 'pass', 0

str_home        db 'home', 0

str_mode        db 'mode', 0

str_pasv        db 'pasv', 0

str_start       db 'start', 0

str_end         db 'end', 0

sockaddr1:

                dw AF_INET4

  .port         dw 0

  .ip           dd 0

                rb 10

  .length       = $ - sockaddr1

; import

align 4

@IMPORT:

diff16 "import", 0, $

library console,                'console.obj',\

        libini,                 'libini.obj', \

        libio,                  'libio.obj'

import  console,\

        con_start,              'START',\

        con_init,               'con_init',\

        con_write_asciiz,       'con_write_asciiz',\

        con_exit,               'con_exit',\

        con_gets,               'con_gets',\

        con_cls,                'con_cls',\

        con_printf,             'con_printf',\

        con_getch2,             'con_getch2',\

        con_set_cursor_pos,     'con_set_cursor_pos',\

        con_set_flags,          'con_set_flags',\

        con_get_flags,          'con_get_flags'

import  libini,\

        ini.get_str,            'ini_get_str',\

        ini.get_int,            'ini_get_int'

import  libio,\

        file.size,              'file_size',\

        file.open,              'file_open',\

        file.read,              'file_read',\

        file.close,             'file_close',\

        file.find.first,        'file_find_first',\

        file.find.next,         'file_find_next',\

        file.find.close,        'file_find_close'

IncludeIGlobals

i_end:

diff16 "i_end", 0, $

; uninitialised data

        socketnum       dd ?

        path            rb 1024

        path2           rb 1024

        params          rb 1024

        serverip        dd ?

        pasv_start      dw ?

        pasv_end        dw ?

        pasv_port       dw ?

        ini_buf         rb 3*4+3+1

        alive           db ?

mem: