;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; 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
org 0x0
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
; get settings from ini
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
; open listening socket
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: