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/*
Unix SMB/Netbios implementation.
Version 1.9.
snprintf replacement
Copyright (C) Andrew Tridgell 1998
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"
extern int DEBUGLEVEL;
/* this is like vsnprintf but the 'n' limit does not include
the terminating null. So if you have a 1024 byte buffer then
pass 1023 for n */
int vslprintf(char *str, int n, char *format, va_list ap)
{
#ifdef HAVE_VSNPRINTF
int ret = vsnprintf(str, n, format, ap);
if (ret > n || ret < 0) {
str[n] = 0;
return -1;
}
str[ret] = 0;
return ret;
#else
static char *buf;
static int len=8000;
int ret;
/* this code is NOT a proper vsnprintf() implementation. It
relies on the fact that all calls to slprintf() in Samba
pass strings which have already been through pstrcpy() or
fstrcpy() and never more than 2 strings are
concatenated. This means the above buffer is absolutely
ample and can never be overflowed.
In the future we would like to replace this with a proper
vsnprintf() implementation but right now we need a solution
that is secure and portable. This is it. */
if (!buf) {
buf = malloc(len);
if (!buf) {
/* can't call debug or we would recurse */
exit(1);
}
}
vsprintf(buf, format, ap);
ret = strlen(buf);
if (ret < 0) {
str[0] = 0;
return -1;
}
if (ret < n) {
n = ret;
} else if (ret > n) {
ret = -1;
}
buf[n] = 0;
memcpy(str, buf, n+1);
return ret;
#endif
}
#ifdef __STDC__
int slprintf(char *str, int n, char *format, ...)
{
#else
int slprintf(va_alist)
va_dcl
{
char *str, *format;
int n;
#endif
va_list ap;
int ret;
#ifdef __STDC__
va_start(ap, format);
#else
va_start(ap);
str = va_arg(ap,char *);
n = va_arg(ap,int);
format = va_arg(ap,char *);
#endif
ret = vslprintf(str,n,format,ap);
va_end(ap);
return ret;
}
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