summaryrefslogtreecommitdiff
path: root/source3/lib
diff options
context:
space:
mode:
authorJeremy Allison <jra@samba.org>2007-04-03 04:52:09 +0000
committerGerald (Jerry) Carter <jerry@samba.org>2007-10-10 12:19:06 -0500
commitafd637e926c70f9ca88d8e85ea2c684032962bc9 (patch)
tree474511c0d30ece6ac597b14408511be69fd59b3e /source3/lib
parentd2a57b63932496ba61ab2b9773eb959b6abaab8a (diff)
downloadsamba-afd637e926c70f9ca88d8e85ea2c684032962bc9.tar.gz
samba-afd637e926c70f9ca88d8e85ea2c684032962bc9.tar.bz2
samba-afd637e926c70f9ca88d8e85ea2c684032962bc9.zip
r22050: Fix a couple of off-by-one errors in the rap
call patch. Jerry, this works now for displaying shares on Win9x (and hopefully everything else as well :-). Jeremy. (This used to be commit 728a4cc71376f9cfff2578d21a47602f8b7c6531)
Diffstat (limited to 'source3/lib')
-rw-r--r--source3/lib/util.c18
1 files changed, 14 insertions, 4 deletions
diff --git a/source3/lib/util.c b/source3/lib/util.c
index 64afa1cc53..b1db36c250 100644
--- a/source3/lib/util.c
+++ b/source3/lib/util.c
@@ -3127,6 +3127,8 @@ int this_is_smp(void)
/****************************************************************
Check if an offset into a buffer is safe.
+ If this returns True it's safe to indirect into the byte at
+ pointer ptr+off.
****************************************************************/
BOOL is_offset_safe(const char *buf_base, size_t buf_len, char *ptr, size_t off)
@@ -3180,10 +3182,14 @@ char *get_safe_str_ptr(const char *buf_base, size_t buf_len, char *ptr, size_t o
int get_safe_SVAL(const char *buf_base, size_t buf_len, char *ptr, size_t off, int failval)
{
- if (!is_offset_safe(buf_base, buf_len, ptr, off+2)) {
+ /*
+ * Note we use off+1 here, not off+2 as SVAL accesses ptr[0] and ptr[1],
+ * NOT ptr[2].
+ */
+ if (!is_offset_safe(buf_base, buf_len, ptr, off+1)) {
return failval;
}
- return SVAL(ptr,0);
+ return SVAL(ptr,off);
}
/****************************************************************
@@ -3192,8 +3198,12 @@ int get_safe_SVAL(const char *buf_base, size_t buf_len, char *ptr, size_t off, i
int get_safe_IVAL(const char *buf_base, size_t buf_len, char *ptr, size_t off, int failval)
{
- if (!is_offset_safe(buf_base, buf_len, ptr, off+4)) {
+ /*
+ * Note we use off+3 here, not off+4 as IVAL accesses
+ * ptr[0] ptr[1] ptr[2] ptr[3] NOT ptr[4].
+ */
+ if (!is_offset_safe(buf_base, buf_len, ptr, off+3)) {
return failval;
}
- return IVAL(ptr,0);
+ return IVAL(ptr,off);
}