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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 < 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;
- }
-