1 // Copyright (C) 1999,2000 Bruce Guenter <bruceg@em.ca>

     2 //

     3 // This program is free software; you can redistribute it and/or modify

     4 // it under the terms of the GNU General Public License as published by

     5 // the Free Software Foundation; either version 2 of the License, or

     6 // (at your option) any later version.

     7 //

     8 // This program is distributed in the hope that it will be useful,

     9 // but WITHOUT ANY WARRANTY; without even the implied warranty of

    10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    11 // GNU General Public License for more details.

    12 //

    13 // You should have received a copy of the GNU General Public License

    14 // along with this program; if not, write to the Free Software

    15 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    16 

    17 #include <config.h>

    18 #include <unistd.h>

    19 #include "response.h"

    20 

    21 static mystring receive_string(int fd)

    22 {

    23   unsigned char lenbuf[2];

    24   if(read(fd, lenbuf, 2) != 2)

    25     return "";

    26   ssize_t len = lenbuf[0] << 8 | lenbuf[1];

    27   char buf[len+1];

    28   if(read(fd, buf, len) != len)

    29     return "";

    30   return mystring(buf, len);

    31 }

    32 

    33 static response read_response(int fd)

    34 {

    35   response::response_code code;

    36   mystring msg;

    37   unsigned char c;

    38   if(read(fd, &c, 1) != 1) {

    39     code = response::econn;

    40     msg = "Sender aborted the data connection";

    41   }

    42   else {

    43     msg = receive_string(fd);

    44     switch(c) {

    45     case 0:

    46     case 1:

    47     case 2:

    48       code = (response::response_code)c;

    49       break;

    50     default:

    51       code = response::econn;

    52       msg = "Invalid data received from sender";

    53     }

    54   }

    55   return response(code, msg);

    56 }

    57 

    58 response response::read(int fd)

    59 {

    60   return read_response(fd);

    61 }