# HG changeset patch
# User Maxim Dounin <mdounin@mdounin.ru>
# Date 1318355678 0
# Node ID 08d8af70760c7e75e46034262c23ded2ba7f36f9
# Parent  d434191a147f1ef4363f2aa60bbebbfc0be21675
Improved access log escaping to better protect other software.

Some character sets (notably ISO-8859-1) have C1 control characters in
upper half, make sure to escape them.

Reported by Jesus Olmos Gonzalez.

diff --git a/src/http/modules/ngx_http_log_module.c b/src/http/modules/ngx_http_log_module.c
--- a/src/http/modules/ngx_http_log_module.c
+++ b/src/http/modules/ngx_http_log_module.c
@@ -690,12 +690,12 @@ ngx_http_log_escape(u_char *dst, u_char 
         0x10000000, /* 0001 0000 0000 0000  0000 0000 0000 0000 */
 
                     /*  ~}| {zyx wvut srqp  onml kjih gfed cba` */
-        0x00000000, /* 0000 0000 0000 0000  0000 0000 0000 0000 */
+        0x80000000, /* 1000 0000 0000 0000  0000 0000 0000 0000 */
 
-        0x00000000, /* 0000 0000 0000 0000  0000 0000 0000 0000 */
-        0x00000000, /* 0000 0000 0000 0000  0000 0000 0000 0000 */
-        0x00000000, /* 0000 0000 0000 0000  0000 0000 0000 0000 */
-        0x00000000, /* 0000 0000 0000 0000  0000 0000 0000 0000 */
+        0xffffffff, /* 1111 1111 1111 1111  1111 1111 1111 1111 */
+        0xffffffff, /* 1111 1111 1111 1111  1111 1111 1111 1111 */
+        0xffffffff, /* 1111 1111 1111 1111  1111 1111 1111 1111 */
+        0xffffffff, /* 1111 1111 1111 1111  1111 1111 1111 1111 */
     };