package-nopast/x86/grub/grub-0.95-xpmjunk.patch

# --- T2-COPYRIGHT-NOTE-BEGIN ---
# This copyright note is auto-generated by ./scripts/Create-CopyPatch.
# 
# T2 SDE: package/.../grub/grub-0.95-xpmjunk.patch
# Copyright (C) 2004 - 2006 The T2 SDE Project
# 
# More information can be found in the files COPYING and README.
# 
# This patch file is dual-licensed. It is available under the license the
# patched project is licensed under, as long as it is an OpenSource license
# as defined at http://www.opensource.org/ (e.g. BSD, X11) or 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.
# --- T2-COPYRIGHT-NOTE-END ---
--- grub-0.95/stage2/graphics.c.xpmjunk	2005-01-04 17:01:35.492804523 -0500
+++ grub-0.95/stage2/graphics.c	2005-01-04 17:02:52.722495885 -0500
@@ -262,6 +262,35 @@
     return;
 }
 
+/* Open the file, and search for a valid XPM header.  Return 1 if one is found,
+ * leaving the current position as the start of the next line.  Else,
+ * return 0.
+ */
+int xpm_open(const char *s) {
+    char buf, prev, target[]="/* XPM */\n";
+    int pos=0;
+
+    if (!grub_open(s))
+        return 0;
+
+    prev='\n';
+    buf=0;
+    do {
+        if (grub_read(&buf, 1) != 1) {
+            grub_close();
+            return 0;
+        }
+        if ((pos == 0 && prev == '\n') || pos > 0) {
+            if (buf == target[pos])
+                pos++;
+            else
+                pos=0;
+        }
+        prev=buf;
+    } while (target[pos]);
+    return 1;
+}
+
 /* Read in the splashscreen image and set the palette up appropriately.
  * Format of splashscreen is an xpm (can be gzipped) with 16 colors and
  * 640x480. */
@@ -271,15 +300,9 @@
     unsigned char c, base, mask, *s1, *s2, *s4, *s8;
     unsigned i, len, idx, colors, x, y, width, height;
 
-    if (!grub_open(s))
+    if (!xpm_open(s))
         return 0;
 
-    /* read header */
-    if (!grub_read((char*)&buf, 10) || grub_memcmp(buf, "/* XPM */\n", 10)) {
-        grub_close();
-        return 0;
-    }
-    
     /* parse info */
     while (grub_read(&c, 1)) {
         if (c == '"')