forked from KolibriOS/kolibrios
468 lines
15 KiB
NASM
468 lines
15 KiB
NASM
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;
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;; Copyright (C) KolibriOS team 2010-2017. All rights reserved. ;;
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;; Distributed under terms of the GNU General Public License ;;
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;; ;;
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;; ftpd.asm - FTP Daemon for KolibriOS ;;
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;; ;;
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;; Written by hidnplayr@kolibrios.org ;;
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;; ;;
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;; GNU GENERAL PUBLIC LICENSE ;;
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;; Version 2, June 1991 ;;
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;; ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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DEBUG = 0 ; if set to one, program will run in a single thread
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BUFFERSIZE = 8192
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; using multiple's of 4
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STATE_CONNECTED = 0*4
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STATE_LOGIN = 1*4
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STATE_LOGIN_FAIL = 2*4 ; When an invalid username was given
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STATE_ACTIVE = 3*4
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TYPE_UNDEF = 0
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TYPE_ASCII = 00000100b
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TYPE_EBDIC = 00001000b
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; subtypes for ascii & ebdic (np = default)
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TYPE_NP = 00000001b ; non printable
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TYPE_TELNET = 00000010b
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TYPE_ASA = 00000011b
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TYPE_IMAGE = 01000000b ; binary data
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TYPE_LOCAL = 10000000b ; bits per byte must be specified
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; lower 4 bits will hold this value
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MODE_NOTREADY = 0
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MODE_ACTIVE = 1
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MODE_PASSIVE_WAIT = 2
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MODE_PASSIVE_OK = 3
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MODE_PASSIVE_FAILED = 4
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PERMISSION_EXEC = 1b ; LIST
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PERMISSION_READ = 10b
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PERMISSION_WRITE = 100b
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PERMISSION_DELETE = 1000b
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PERMISSION_CD = 10000b ; Change Directory
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ABORT = 1 shl 31
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format binary as ""
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use32
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org 0x0
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db 'MENUET01' ; signature
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dd 1 ; header version
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dd start ; entry point
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dd i_end ; initialized size
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dd mem+0x1000 ; required memory
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dd mem+0x1000 ; stack pointer
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dd params ; parameters
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dd path ; path
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include '../../macros.inc'
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purge mov,add,sub
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include '../../proc32.inc'
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include '../../dll.inc'
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include '../../struct.inc'
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include '../../develop/libraries/libs-dev/libio/libio.inc'
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include '../../network.inc'
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macro sendFTP str {
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local string, length
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xor edi, edi
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mcall send, [ebp + thread_data.socketnum], string, length
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invoke con_write_asciiz, string
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iglobal
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string db str, 13, 10, 0
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length = $ - string - 1
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\}
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}
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include 'commands.inc'
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start:
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mcall 68, 11 ; init heap
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mcall 40, EVM_STACK ; we only want network events
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; load libraries
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stdcall dll.Load, @IMPORT
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test eax, eax
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jnz exit
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; find path to main settings file (ftpd.ini)
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mov edi, path ; Calculate the length of zero-terminated string
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xor al, al
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mov ecx, 1024
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repne scasb
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dec edi
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mov esi, str_ini ; append it with '.ini', 0
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movsd
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movsb
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; now create the second path (users.ini)
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std
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mov al, '/'
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repne scasb
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lea ecx, [edi - path + 2]
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cld
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mov esi, path
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mov edi, path2
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rep movsb
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mov esi, str_users
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movsd
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movsd
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movsw
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; initialize console
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invoke con_start, 1
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invoke con_init, -1, -1, -1, -1, title
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; get settings from ini
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invoke ini.get_str, path, str_ftpd, str_ip, ini_buf, 16, 0
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mov esi, ini_buf
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mov cl, '.'
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call ip_to_dword
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mov [serverip], ebx
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invoke ini.get_int, path, str_ftpd, str_port, 21
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xchg al, ah
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mov [sockaddr1.port], ax
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xchg al, ah
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invoke con_printf, str1, eax
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add esp, 8
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; open listening socket
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mcall socket, AF_INET4, SOCK_STREAM, SO_NONBLOCK ; we dont want to block on accept
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cmp eax, -1
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je sock_err
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mov [socketnum], eax
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invoke con_write_asciiz, str2
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; mcall setsockopt, [socketnum], SOL_SOCKET, SO_REUSEADDR, &yes,
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; cmp eax, -1
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; je opt_err
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mcall bind, [socketnum], sockaddr1, sockaddr1.length
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cmp eax, -1
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je bind_err
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invoke con_write_asciiz, str2
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invoke ini.get_int, path, str_ftpd, str_conn, 1 ; Backlog (max connections)
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mov edx, eax
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invoke con_write_asciiz, str2
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mcall listen, [socketnum]
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cmp eax, -1
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je listen_err
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invoke con_write_asciiz, str2b
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invoke ini.get_int, path, str_pasv, str_start, 2000
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mov [pasv_start], ax
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invoke ini.get_int, path, str_pasv, str_end, 5000
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mov [pasv_end], ax
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mov [alive], 1
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mainloop:
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mcall 23, 100 ; Wait here for incoming connections on the base socket (socketnum)
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; One second timeout, we will use this to check if console is still working
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test eax, eax ; network event?
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jz .checkconsole
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if DEBUG
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jmp threadstart
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else
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mcall 51, 1, threadstart, 0 ; Start a new thread for every incoming connection
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; NOTE: upon initialisation of the thread, stack will not be available!
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end if
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jmp mainloop
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.checkconsole:
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invoke con_get_flags ; Is console still running?
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test eax, 0x0200
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jz mainloop
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mcall close, [socketnum] ; kill the listening socket
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mov [alive], 0
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mcall -1 ; and exit
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diff16 "threadstart", 0, $
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threadstart:
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;;; mcall 68, 11 ; init heap
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mcall 68, 12, sizeof.thread_data ; allocate the thread data struct
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test eax, eax
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je exit
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lea esp, [eax + thread_data.stack] ; init stack
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mov ebp, eax
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mcall 40, EVM_STACK ; we only want network events for this thread
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lea ebx, [ebp + thread_data.buffer] ; get information about the current process
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or ecx, -1
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mcall 9
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mov eax, dword [ebp + thread_data.buffer + 30] ; PID is at offset 30
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mov [ebp + thread_data.pid], eax
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invoke con_set_flags, 0x03
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invoke con_printf, str8, [ebp + thread_data.pid] ; print on the console that we have created the new thread successfully
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add esp, 8 ; balance stack
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invoke con_set_flags, 0x07
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mcall accept, [socketnum], sockaddr1, sockaddr1.length ; time to accept the awaiting connection..
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cmp eax, -1
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je thread_exit
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mov [ebp + thread_data.socketnum], eax
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if DEBUG
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mcall close, [socketnum] ; close the listening socket
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end if
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mov [ebp + thread_data.state], STATE_CONNECTED
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mov [ebp + thread_data.permissions], 0
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mov [ebp + thread_data.mode], MODE_NOTREADY
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lea eax, [ebp + thread_data.buffer]
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mov [ebp + thread_data.buffer_ptr], eax
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mov [ebp + thread_data.passivesocknum], -1
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sendFTP " 220 Welcome to KolibriOS FTP daemon" ; fix output code
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diff16 "threadloop", 0, $
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threadloop:
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;; Check if our socket is still connected
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; mcall send, [ebp + thread_data.socketnum], 0, 0 ; Try to send zero bytes, if socket is closed, this will return -1
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; cmp eax, -1
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; je thread_exit
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cmp [alive], 0 ; Did main thread take a run for it?
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je thread_exit
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mcall 23, 100 ; Wait for network event
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test eax, eax
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jz threadloop
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cmp [ebp + thread_data.mode], MODE_PASSIVE_WAIT
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jne .not_passive
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mov ecx, [ebp + thread_data.passivesocknum]
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lea edx, [ebp + thread_data.datasock]
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mov esi, sizeof.thread_data.datasock
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mcall accept
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cmp eax, -1
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je .not_passive
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mov [ebp + thread_data.datasocketnum], eax
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mov [ebp + thread_data.mode], MODE_PASSIVE_OK
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mcall close ; [ebp + thread_data.passivesocknum]
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mov [ebp + thread_data.passivesocknum], -1
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invoke con_write_asciiz, str_datasock
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.not_passive:
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mov ecx, [ebp + thread_data.socketnum]
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mov edx, [ebp + thread_data.buffer_ptr]
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mov esi, sizeof.thread_data.buffer ;;; FIXME
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mov edi, MSG_DONTWAIT
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mcall recv
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inc eax ; error? (-1)
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jz threadloop
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dec eax ; 0 bytes read?
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jz threadloop
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mov edi, [ebp + thread_data.buffer_ptr]
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add [ebp + thread_data.buffer_ptr], eax
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; Check if we received a newline character, if not, wait for more data
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mov ecx, eax
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mov al, 10
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repne scasb
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jne threadloop
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cmp word[edi-1], 0x0a0d
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jne .got_command
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dec edi
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; We got a command!
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.got_command:
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mov byte [edi], 0 ; append string with zero byte
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lea esi, [ebp + thread_data.buffer]
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mov ecx, [ebp + thread_data.buffer_ptr]
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sub ecx, esi
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mov [ebp + thread_data.buffer_ptr], esi ; reset buffer ptr
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invoke con_set_flags, 0x02 ; print received data to console (in green color)
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invoke con_write_asciiz, str_newline
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invoke con_write_asciiz, esi
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invoke con_set_flags, 0x07
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push threadloop
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jmp parse_cmd
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listen_err:
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invoke con_set_flags, 0x0c ; print errors in red
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invoke con_write_asciiz, str3
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jmp done
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bind_err:
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invoke con_set_flags, 0x0c ; print errors in red
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invoke con_write_asciiz, str4
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jmp done
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sock_err:
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invoke con_set_flags, 0x0c ; print errors in red
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invoke con_write_asciiz, str6
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jmp done
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done:
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invoke con_exit, 0
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exit:
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mcall -1
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thread_exit:
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invoke con_set_flags, 0x03 ; print thread info in blue
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invoke con_printf, str_bye, [ebp + thread_data.pid] ; print on the console that we are about to kill the thread
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add esp, 8 ; balance stack
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mcall 68, 13, ebp ; free the memory
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mcall -1 ; and kill the thread
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; initialized data
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title db 'FTP daemon', 0
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str1 db 'Starting FTP daemon on port %u.', 0
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str2 db '.', 0
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str2b db ' OK!',10,0
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str3 db 'Listen error',10,0
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str4 db 10,'ERROR: local port is already in use.',10,0
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;str5 db 'Setsockopt error.',10,10,0
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str6 db 'ERROR: Could not open socket.',10,0
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str7 db 'Got data!',10,10,0
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str8 db 10,'Thread %d created',10,0
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str_bye db 10,'Thread %d killed',10,0
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str_logged_in db 'Login ok',10,0
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str_pass_ok db 'Password ok',10,0
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str_pass_err db 'Password/Username incorrect',10,0
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str_pwd db 'Current directory is "%s"\n',0
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str_err2 db 'ERROR: cannot open the directory.',10,0
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str_datasock db 'Passive data socket connected.',10,0
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str_datasock2 db 'Active data socket connected.',10,0
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str_alopen db 'Data connection already open.',10,0
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str_notfound db 'ERROR: file not found.',10,0
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str_sockerr db 'ERROR: socket error.',10,0
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str_newline db 10, 0
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str_mask db '*', 0
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str_infinity db 0xff, 0xff, 0xff, 0xff, 0
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months dd 'Jan '
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dd 'Feb '
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dd 'Mar '
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dd 'Apr '
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dd 'May '
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dd 'Jun '
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dd 'Jul '
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dd 'Aug '
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dd 'Sep '
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dd 'Oct '
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dd 'Nov '
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dd 'Dec '
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str_users db 'users'
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str_ini db '.ini', 0
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str_port db 'port', 0
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str_ftpd db 'ftpd', 0
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str_conn db 'conn', 0
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str_ip db 'ip', 0
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str_pass db 'pass', 0
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str_home db 'home', 0
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str_mode db 'mode', 0
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str_pasv db 'pasv', 0
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str_start db 'start', 0
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str_end db 'end', 0
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sockaddr1:
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dw AF_INET4
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.port dw 0
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.ip dd 0
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rb 10
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.length = $ - sockaddr1
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; import
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align 4
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@IMPORT:
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diff16 "import", 0, $
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library console, 'console.obj',\
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libini, 'libini.obj', \
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libio, 'libio.obj'
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import console,\
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con_start, 'START',\
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con_init, 'con_init',\
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con_write_asciiz, 'con_write_asciiz',\
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con_exit, 'con_exit',\
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con_gets, 'con_gets',\
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con_cls, 'con_cls',\
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con_printf, 'con_printf',\
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con_getch2, 'con_getch2',\
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con_set_cursor_pos, 'con_set_cursor_pos',\
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con_set_flags, 'con_set_flags',\
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con_get_flags, 'con_get_flags'
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import libini,\
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ini.get_str, 'ini_get_str',\
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ini.get_int, 'ini_get_int'
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import libio,\
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file.size, 'file_size',\
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file.open, 'file_open',\
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file.read, 'file_read',\
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file.write, 'file_write',\
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file.close, 'file_close',\
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file.find.first, 'file_find_first',\
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file.find.next, 'file_find_next',\
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file.find.close, 'file_find_close'
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IncludeIGlobals
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i_end:
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diff16 "i_end", 0, $
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; uninitialised data
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socketnum dd ?
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path rb 1024
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path2 rb 1024
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params rb 1024
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serverip dd ?
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pasv_start dw ?
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pasv_end dw ?
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pasv_port dw ?
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ini_buf rb 3*4+3+1
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alive db ?
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mem:
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