Rob Shearman : wininet: Fix an off-by-one error in the boundary checks in HTTP_DecodeBase64.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: f8f9dbbbe7de084fb9751abd4b523d357b605843
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=f8f9dbbbe7de084fb9751abd4b...

Author: Rob Shearman 
Date:   Fri Feb 15 10:06:32 2008 +0000

wininet: Fix an off-by-one error in the boundary checks in HTTP_DecodeBase64.

---

dlls/wininet/http.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/dlls/wininet/http.c b/dlls/wininet/http.c
index 0245d2b..083eda6 100644
--- a/dlls/wininet/http.c
+++ b/dlls/wininet/http.c
@@ -1129,9 +1129,9 @@ static UINT HTTP_DecodeBase64( LPCWSTR base64, LPSTR bin )
     {
         signed char in[4];

-        if (base64[0] > ARRAYSIZE(HTTP_Base64Dec) ||
+        if (base64[0] >= ARRAYSIZE(HTTP_Base64Dec) ||
             ((in[0] = HTTP_Base64Dec[base64[0]]) == -1) ||
-            base64[1] > ARRAYSIZE(HTTP_Base64Dec) ||
+            base64[1] >= ARRAYSIZE(HTTP_Base64Dec) ||
             ((in[1] = HTTP_Base64Dec[base64[1]]) == -1))
         {
             WARN("invalid base64: %s\n", debugstr_w(base64));