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authorJeremy Allison <jra@samba.org>2003-04-10 19:08:42 +0000
committerJeremy Allison <jra@samba.org>2003-04-10 19:08:42 +0000
commitba9f9afe8b6ca8c008ac8f97c43d896e1cbc4b91 (patch)
tree8e6ef0951d9b8aed585624eac210b112bf3c0106 /source3/tdb
parentac65d890703c85fe69e2c577061087b8da2a4a93 (diff)
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Fix from Andrew Esh to ensure tdb_pack can't segfault.
Also stop it leaking memory like a sieve ! Jeremy. (This used to be commit 11b914ed84c4dbd31726969b3b924f686f938510)
Diffstat (limited to 'source3/tdb')
-rw-r--r--source3/tdb/tdbutil.c21
1 files changed, 12 insertions, 9 deletions
diff --git a/source3/tdb/tdbutil.c b/source3/tdb/tdbutil.c
index b153d442bd..69b282cda0 100644
--- a/source3/tdb/tdbutil.c
+++ b/source3/tdb/tdbutil.c
@@ -42,7 +42,7 @@ static void gotalarm_sig(void)
static TDB_DATA make_tdb_data(const char *dptr, size_t dsize)
{
TDB_DATA ret;
- ret.dptr = smb_xstrdup(dptr);
+ ret.dptr = dptr;
ret.dsize = dsize;
return ret;
}
@@ -406,47 +406,47 @@ size_t tdb_pack(char *buf, int bufsize, const char *fmt, ...)
case 'b': /* unsigned 8-bit integer */
len = 1;
bt = (uint8)va_arg(ap, int);
- if (bufsize >= len)
+ if (bufsize && bufsize >= len)
SSVAL(buf, 0, bt);
break;
case 'w': /* unsigned 16-bit integer */
len = 2;
w = (uint16)va_arg(ap, int);
- if (bufsize >= len)
+ if (bufsize && bufsize >= len)
SSVAL(buf, 0, w);
break;
case 'd': /* signed 32-bit integer (standard int in most systems) */
len = 4;
d = va_arg(ap, uint32);
- if (bufsize >= len)
+ if (bufsize && bufsize >= len)
SIVAL(buf, 0, d);
break;
case 'p': /* pointer */
len = 4;
p = va_arg(ap, void *);
d = p?1:0;
- if (bufsize >= len)
+ if (bufsize && bufsize >= len)
SIVAL(buf, 0, d);
break;
case 'P': /* null-terminated string */
s = va_arg(ap,char *);
w = strlen(s);
len = w + 1;
- if (bufsize >= len)
+ if (bufsize && bufsize >= len)
memcpy(buf, s, len);
break;
case 'f': /* null-terminated string */
s = va_arg(ap,char *);
w = strlen(s);
len = w + 1;
- if (bufsize >= len)
+ if (bufsize && bufsize >= len)
memcpy(buf, s, len);
break;
case 'B': /* fixed-length string */
i = va_arg(ap, int);
s = va_arg(ap, char *);
len = 4+i;
- if (bufsize >= len) {
+ if (bufsize && bufsize >= len) {
SIVAL(buf, 0, i);
memcpy(buf+4, s, i);
}
@@ -459,7 +459,10 @@ size_t tdb_pack(char *buf, int bufsize, const char *fmt, ...)
}
buf += len;
- bufsize -= len;
+ if (bufsize)
+ bufsize -= len;
+ if (bufsize < 0)
+ bufsize = 0;
}
va_end(ap);