178 lines
4.2 KiB
PHP
178 lines
4.2 KiB
PHP
server_parser:
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; Commands are always 3 numbers and followed by a space
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; If a server decides it needs multiline output,
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; first lines will have a dash instead of space after numbers,
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; thus they are simply ignored in this simple command parser.
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cmp dword[s], "150 "
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je data_ok
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cmp dword[s], "220 "
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je welcome
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; cmp dword[s], "226 "
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; je transfer_ok
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cmp dword[s], "227 "
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je pasv_ok
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cmp dword[s], "230 "
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je login_ok
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; cmp dword[s], "250"
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; je op_ok
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cmp dword[s], "331 "
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je pass
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; cmp dword[s], "421 "
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; je timeout
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cmp dword[s], "503 " ; login first
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je welcome
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cmp dword[s], "530 " ; password incorrect
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je welcome
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cmp dword[s], "550 "
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je close_datacon
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jmp wait_for_usercommand
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welcome:
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mov [status], STATUS_CONNECTED
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jmp wait_for_usercommand
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pass:
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mov [status], STATUS_NEEDPASSWORD
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jmp wait_for_usercommand
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login_ok:
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mov [status], STATUS_LOGGED_IN
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jmp wait_for_usercommand
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pasv_ok:
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sub ecx, 4
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jb .fail
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mov al, "("
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mov edi, s + 4
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repne scasb
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mcall socket, AF_INET4, SOCK_STREAM, 0
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cmp eax, -1
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je error_socket
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mov [datasocket], eax
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mov esi, edi
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call ascii_dec
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mov byte[sockaddr2.ip+0], bl
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call ascii_dec
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mov byte[sockaddr2.ip+1], bl
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call ascii_dec
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mov byte[sockaddr2.ip+2], bl
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call ascii_dec
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mov byte[sockaddr2.ip+3], bl
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call ascii_dec
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mov byte[sockaddr2.port+0], bl
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call ascii_dec
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mov byte[sockaddr2.port+1], bl
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invoke con_write_asciiz, str_open
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mcall connect, [datasocket], sockaddr2, 18
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; cmp eax, -1
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; je error_socket
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jmp wait_for_servercommand
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.fail:
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invoke con_write_asciiz, str_unknown
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jmp wait_for_servercommand
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data_ok:
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invoke con_write_asciiz, str2b
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cmp [operation], OPERATION_STOR
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je .stor
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; we are receiving data
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mcall recv, [datasocket], buffer_ptr2, BUFFERSIZE, 0
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test ebx, ebx
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jnz .done
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mov byte[buffer_ptr2 + eax], 0
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cmp [operation], OPERATION_RETR
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je .retr
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; not retreiving, just print to console
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invoke con_write_asciiz, buffer_ptr2
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jmp data_ok
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; retreiving, save to file
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.retr:
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mov [filestruct.ptr], buffer_ptr2
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mov [filestruct.size], eax
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push eax
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mcall 70, filestruct
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pop eax
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add [filestruct.offset], eax
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jmp data_ok
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; storing, send all data
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.stor:
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mcall 70, filestruct
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cmp eax, 6 ; end of file
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je .last_call
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test eax, eax ; error
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; jne .fileerror
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add [filestruct.offset], ebx
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mov esi, ebx
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mcall send, [datasocket], buffer_ptr2, , 0
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jmp .stor
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.last_call:
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mov esi, ebx
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mcall send, [datasocket], buffer_ptr2, , 0
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.done:
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invoke con_write_asciiz, str_close
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mcall close, [datasocket]
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jmp wait_for_servercommand
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close_datacon:
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invoke con_write_asciiz, str_close
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mcall close, [datasocket]
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jmp wait_for_usercommand
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ascii_dec:
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xor ebx, ebx
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mov cl, 4 ; max length is 3 digits + 1 separator
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.loop:
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lodsb
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sub al, '0'
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jb .done
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cmp al, 9
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ja .done
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lea ebx, [ebx*4+ebx] ; ebx *5
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shl ebx, 1 ; ebx *2
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add bl, al
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dec cl
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jnz .loop
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.done:
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ret |