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FTPc: better command parser, improved help, increased code quality.

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git-svn-id: svn://kolibrios.org@3813 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
hidnplayr 2013-07-12 08:59:34 +00:00
parent 918bdba286
commit 10d7fd5cf9
3 changed files with 115 additions and 102 deletions
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213
programs/network/ftpc/ftpc.asm
View File

@ -45,9 +45,8 @@ include '../../network.inc'
include 'usercommands.inc'
include 'servercommands.inc'
; entry point
start:
; disable all events
mcall 40, 0
; load libraries
stdcall dll.Load, @IMPORT
@ -55,30 +54,29 @@ start:
jnz exit
; initialize console
invoke con_start, 1
invoke con_init, 80, 25, 80, 250, title
; Check for parameters
invoke con_init, 80, 25, 80, 250, str_title
; Check for parameters, if there are some, resolve the address right away
cmp byte [s], 0
jne resolve
main:
; Clear screen
invoke con_cls
; Welcome user
invoke con_write_asciiz, str1
; write prompt
invoke con_write_asciiz, str_welcome
; write prompt (in green color)
invoke con_set_flags, 0x0a
invoke con_write_asciiz, str2
invoke con_write_asciiz, str_prompt
; read string
mov esi, s
invoke con_gets, esi, 256
invoke con_write_asciiz, str4 ; newline
invoke con_set_flags, 0x07
invoke con_gets, s, 256
; check for exit
test eax, eax
jz done
cmp byte [esi], 10
cmp byte [s], 10
jz done
; reset color back to grey and print newline
invoke con_set_flags, 0x07
invoke con_write_asciiz, str_newline
resolve:
; delete terminating '\n'
@ -88,18 +86,16 @@ resolve:
cmp al, 0x20
ja @r
mov byte [esi-1], 0
invoke con_write_asciiz, str3
; Say to the user that we're resolving
invoke con_write_asciiz, str_resolve
invoke con_write_asciiz, s
; resolve name
push esp ; reserve stack place
invoke getaddrinfo, s, 0, 0, esp
pop esi
; test for error
test eax, eax
jnz fail
jnz error_resolve
; write results
invoke con_write_asciiz, str8 ; ' (',0
mov eax, [esi+addrinfo.ai_addr] ; convert IP address to decimal notation
@ -109,26 +105,25 @@ resolve:
invoke con_write_asciiz, eax ; print ip
invoke freeaddrinfo, esi ; free allocated memory
invoke con_write_asciiz, str9 ; ')',10,0
; open the socket
mcall socket, AF_INET4, SOCK_STREAM, 0
cmp eax, -1
je socket_error
je error_socket
mov [socketnum], eax
; connect to the server
invoke con_write_asciiz, str11
invoke con_write_asciiz, str_connect
mcall connect, [socketnum], sockaddr1, 18
mov [status], STATUS_CONNECTING
; Tell the user we're waiting for the server now.
invoke con_write_asciiz, str_waiting
invoke con_write_asciiz, str12 ; 'waiting for welcome'
; Reset 'offset' variable, it's used by the data receiver
mov [offset], 0
wait_for_servercommand:
; Any commands still in our buffer?
cmp [offset], 0
je .receive
je .receive ; nope, receive some more
mov esi, [offset]
mov edi, s
mov ecx, [size]
@ -139,7 +134,7 @@ wait_for_servercommand:
.receive:
mcall recv, [socketnum], buffer_ptr, BUFFERSIZE, 0
inc eax
jz socket_error
jz error_socket
dec eax
jz wait_for_servercommand
@ -174,15 +169,19 @@ wait_for_servercommand:
invoke con_set_flags, 0x03 ; change color
invoke con_write_asciiz, s ; print servercommand
invoke con_write_asciiz, str4 ; newline
invoke con_write_asciiz, str_newline
invoke con_set_flags, 0x07 ; reset color
jmp server_parser ; parse command
wait_for_usercommand:
; change color to green for user input
invoke con_set_flags, 0x0a
; If we are not yet connected, request username/password
cmp [status], STATUS_CONNECTED
je .connected
@ -190,56 +189,65 @@ wait_for_usercommand:
je .needpass
; write prompt
invoke con_write_asciiz, str2
invoke con_write_asciiz, str_prompt
; read string
mov esi, s
invoke con_gets, esi, 256
invoke con_gets, s, 256
invoke con_write_asciiz, str4 ; newline
; print a newline and reset the color back to grey
invoke con_write_asciiz, str_newline
invoke con_set_flags, 0x07
cmp dword[s], "list"
je cmd_list
cmp dword[s], "help"
je cmd_help
cmp dword[s], "cwd "
je cmd_cwd
cmp dword[s], "retr"
je cmd_retr
cmp dword[s], "pwd" + 10 shl 24
je cmd_pwd
cmp dword[s], "stor"
je cmd_stor
cmp dword[s], "dele"
je cmd_dele
cmp dword[s], "bye" + 10 shl 24
je cmd_bye
cmp dword[s], "lcwd"
je cmd_lcwd
cmp dword[s], "mkd "
je cmd_mkd
cmp dword[s], "rmd "
je cmd_rmd
cmp dword[s], "pwd" + 10 shl 24
je cmd_pwd
cmp dword[s], "bye" + 10 shl 24
je cmd_bye
cmp byte[s+4], " "
jne @f
cmp dword[s], "lcwd"
je cmd_lcwd
cmp dword[s], "retr"
je cmd_retr
cmp dword[s], "stor"
je cmd_stor
cmp dword[s], "dele"
je cmd_dele
@@:
cmp byte[s+4], 10
jne @f
cmp dword[s], "list"
je cmd_list
cmp dword[s], "help"
je cmd_help
cmp dword[s], "cdup"
je cmd_cdup
@@:
; Uh oh.. unknown command, tell the user and wait for new input
invoke con_write_asciiz, str_unknown
jmp wait_for_usercommand
.connected:
; request username
invoke con_write_asciiz, str_user
mov dword[s], "USER"
mov byte[s+4], " "
@ -247,7 +255,7 @@ wait_for_usercommand:
.needpass:
; request password
invoke con_write_asciiz, str_pass
mov dword[s], "PASS"
mov byte[s+4], " "
@ -267,7 +275,7 @@ wait_for_usercommand:
; and send it to the server
mcall send, [socketnum], s, , 0
invoke con_write_asciiz, str4 ; newline
invoke con_write_asciiz, str_newline
invoke con_set_flags, 0x07 ; reset color
jmp wait_for_servercommand
@ -283,19 +291,20 @@ open_dataconnection: ; only passive for now..
ret
.fail:
invoke con_write_asciiz, str6
invoke con_write_asciiz, str_err_socket
ret
socket_error:
invoke con_write_asciiz, str6
jmp fail.wait
error_socket:
invoke con_write_asciiz, str_err_socket
jmp wait_for_keypress
fail:
invoke con_write_asciiz, str5
.wait:
invoke con_write_asciiz, str10
error_resolve:
invoke con_write_asciiz, str_err_resolve
wait_for_keypress:
invoke con_write_asciiz, str_push
invoke con_getch2
jmp main
@ -309,40 +318,42 @@ exit:
; data
title db 'FTP client',0
str1 db 'FTP client for KolibriOS v0.07',10,10,'Please enter ftp server address.',10,0
str2 db '> ',0
str3 db 'Resolving ',0
str4 db 10,0
str5 db 10,'Name resolution failed.',10,0
str6 db 10,'Socket error.',10,0
str8 db ' (',0
str9 db ')',10,0
str10 db 'Push any key to continue.',0
str11 db 'Connecting...',10,0
str12 db 'Waiting for welcome message.',10,0
str_user db "username: ",0
str_pass db "password: ",0
str_unknown db "unknown command or insufficient parameters",10,0
str_lcwd db "local working directory is now: ",0
str_title db 'FTP client',0
str_welcome db 'FTP client for KolibriOS v0.08',10
db 10
db 'Please enter ftp server address.',10,0
str_help db "available commands:",10
db "help - help",10
db 10
db "bye - close connection",10
db "cdup - change to parent of current directory on server",10
db "cwd - change working directoy on server",10
db "dele - delete file from server",10
db "list - list files and folders in current directory",10
db "lcwd - change local working directory",10
db "mkd - make directory on the server",10
db "pwd - print working directory",10
db "retr - retreive file from server",10
db "rmd - remove directory from the server",10
db "stor - store file on server",10
db 10,0
str_prompt db '> ',0
str_resolve db 'Resolving ',0
str_newline db 10,0
str_err_resolve db 10,'Name resolution failed.',10,0
str_err_socket db 10,'Socket error.',10,0
str8 db ' (',0
str9 db ')',10,0
str_push db 'Push any key to continue.',0
str_connect db 'Connecting...',10,0
str_waiting db 'Waiting for welcome message.',10,0
str_user db "username: ",0
str_pass db "password: ",0
str_unknown db "Unknown command or insufficient parameters - type help for more information.",10,0
str_lcwd db "Local working directory is now: ",0
str_open db "opening data socket",10,0
str_open db "opening data socket",10,0
str_help db "available commands:",10
db 10
db "bye - close the connection",10
db "cdup - change to parent of current directory on the server",10
db "cwd <directory> - change working directoy on the server",10
db "dele <file> - delete file from the server",10
db "list - list files and folders in current server directory",10
db "lcwd <path> - change local working directory",10
db "mkd <directory> - make directory on the server",10
db "pwd - print server working directory",10
db "retr <file> - retreive file from the server",10
db "rmd <directory> - remove directory from the server",10
db "stor <file> - store file on the server",10
db 10,0
sockaddr1:
dw AF_INET4
@ -383,6 +394,8 @@ import console, \
i_end:
; uninitialised data
status db ?
active_passive db ?

2
programs/network/ftpc/servercommands.inc
View File

@ -66,7 +66,7 @@ pasv_ok:
mcall socket, AF_INET4, SOCK_STREAM, 0
cmp eax, -1
je fail
je error_socket
mov [datasocket], eax
mov esi, edi

2
programs/network/ftpc/usercommands.inc
View File

@ -145,7 +145,7 @@ cmd_lcwd:
invoke con_write_asciiz, str_lcwd
invoke con_write_asciiz, s
invoke con_write_asciiz, str4 ; newline
invoke con_write_asciiz, str_newline
jmp wait_for_usercommand