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