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Viewing changes to source/modules/weird.c

  • Committer: Bazaar Package Importer
  • Author(s): Martin Pitt
  • Date: 2004-10-15 12:31:58 UTC
  • Revision ID: james.westby@ubuntu.com-20041015123158-aokykzdqkdgy6dfx
Tags: upstream-3.0.7
Import upstream version 3.0.7

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source/modules/weird.c
 
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/* 
 
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   Unix SMB/CIFS implementation.
 
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   Samba module with developer tools
 
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   Copyright (C) Andrew Tridgell 2001
 
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   Copyright (C) Jelmer Vernooij 2002
 
6
   
 
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   This program is free software; you can redistribute it and/or modify
 
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   it under the terms of the GNU General Public License as published by
 
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   the Free Software Foundation; either version 2 of the License, or
 
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   (at your option) any later version.
 
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   This program is distributed in the hope that it will be useful,
 
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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   GNU General Public License for more details.
 
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   You should have received a copy of the GNU General Public License
 
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   along with this program; if not, write to the Free Software
 
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   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
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*/
 
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#include "includes.h"
 
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static struct {
 
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        char from;
 
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        char *to;
 
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        int len;
 
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} weird_table[] = {
 
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        {'q', "^q^", 3},
 
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        {'Q', "^Q^", 3},
 
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        {0, NULL}
 
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};
 
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static size_t weird_pull(void *cd, char **inbuf, size_t *inbytesleft,
 
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                         char **outbuf, size_t *outbytesleft)
 
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{
 
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        while (*inbytesleft >= 1 && *outbytesleft >= 2) {
 
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                int i;
 
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                int done = 0;
 
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                for (i=0;weird_table[i].from;i++) {
 
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                        if (strncmp((*inbuf), 
 
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                                    weird_table[i].to, 
 
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                                    weird_table[i].len) == 0) {
 
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                                if (*inbytesleft < weird_table[i].len) {
 
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                                        DEBUG(0,("ERROR: truncated weird string\n"));
 
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                                        /* smb_panic("weird_pull"); */
 
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                                } else {
 
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                                        (*outbuf)[0] = weird_table[i].from;
 
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                                        (*outbuf)[1] = 0;
 
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                                        (*inbytesleft)  -= weird_table[i].len;
 
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                                        (*outbytesleft) -= 2;
 
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                                        (*inbuf)  += weird_table[i].len;
 
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                                        (*outbuf) += 2;
 
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                                        done = 1;
 
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                                        break;
 
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                                }
 
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                        }
 
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                }
 
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                if (done) continue;
 
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                (*outbuf)[0] = (*inbuf)[0];
 
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                (*outbuf)[1] = 0;
 
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                (*inbytesleft)  -= 1;
 
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                (*outbytesleft) -= 2;
 
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                (*inbuf)  += 1;
 
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                (*outbuf) += 2;
 
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        }
 
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        if (*inbytesleft > 0) {
 
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                errno = E2BIG;
 
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                return -1;
 
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        }
 
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        return 0;
 
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}
 
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static size_t weird_push(void *cd, char **inbuf, size_t *inbytesleft,
 
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                         char **outbuf, size_t *outbytesleft)
 
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{
 
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        int ir_count=0;
 
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        while (*inbytesleft >= 2 && *outbytesleft >= 1) {
 
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                int i;
 
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                int done=0;
 
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                for (i=0;weird_table[i].from;i++) {
 
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                        if ((*inbuf)[0] == weird_table[i].from &&
 
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                            (*inbuf)[1] == 0) {
 
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                                if (*outbytesleft < weird_table[i].len) {
 
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                                        DEBUG(0,("No room for weird character\n"));
 
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                                        /* smb_panic("weird_push"); */
 
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                                } else {
 
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                                        memcpy(*outbuf, weird_table[i].to, 
 
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                                               weird_table[i].len);
 
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                                        (*inbytesleft)  -= 2;
 
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                                        (*outbytesleft) -= weird_table[i].len;
 
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                                        (*inbuf)  += 2;
 
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                                        (*outbuf) += weird_table[i].len;
 
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                                        done = 1;
 
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                                        break;
 
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                                }
 
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                        }
 
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                }
 
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                if (done) continue;
 
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                (*outbuf)[0] = (*inbuf)[0];
 
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                if ((*inbuf)[1]) ir_count++;
 
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                (*inbytesleft)  -= 2;
 
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                (*outbytesleft) -= 1;
 
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                (*inbuf)  += 2;
 
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                (*outbuf) += 1;
 
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        }
 
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        if (*inbytesleft == 1) {
 
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                errno = EINVAL;
 
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                return -1;
 
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        }
 
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        if (*inbytesleft > 1) {
 
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                errno = E2BIG;
 
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                return -1;
 
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        }
 
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        return ir_count;
 
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}
 
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struct charset_functions weird_functions = {"WEIRD", weird_pull, weird_push};
 
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NTSTATUS charset_weird_init(void)
 
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{
 
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        return smb_register_charset(&weird_functions);
 
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}