Package: libid3tag / 0.15.1b-12

10_utf16.dpatch Patch series | download
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#! /bin/sh -e
## 10_utf16.dpatch by  <kurt@roeckx.be>
##
## All lines beginning with `## DP:' are a description of the patch.
## DP: Handle bogus UTF16 sequences that have a length that is not
## DP: an even number of 8 bit characters.

if [ $# -lt 1 ]; then
    echo "`basename $0`: script expects -patch|-unpatch as argument" >&2
    exit 1
fi

[ -f debian/patches/00patch-opts ] && . debian/patches/00patch-opts
patch_opts="${patch_opts:--f --no-backup-if-mismatch} ${2:+-d $2}"

case "$1" in
    -patch) patch -p1 ${patch_opts} < $0;;
    -unpatch) patch -R -p1 ${patch_opts} < $0;;
    *)
        echo "`basename $0`: script expects -patch|-unpatch as argument" >&2
        exit 1;;
esac

exit 0

@DPATCH@
diff -urNad libid3tag-0.15.1b/utf16.c /tmp/dpep.tKvO7a/libid3tag-0.15.1b/utf16.c
--- libid3tag-0.15.1b/utf16.c	2006-01-13 15:26:29.000000000 +0100
+++ /tmp/dpep.tKvO7a/libid3tag-0.15.1b/utf16.c	2006-01-13 15:27:19.000000000 +0100
@@ -282,5 +282,18 @@
 
   free(utf16);
 
+  if (end == *ptr && length % 2 != 0)
+  {
+     /* We were called with a bogus length.  It should always
+      * be an even number.  We can deal with this in a few ways:
+      * - Always give an error.
+      * - Try and parse as much as we can and
+      *   - return an error if we're called again when we
+      *     already tried to parse everything we can.
+      *   - tell that we parsed it, which is what we do here.
+      */
+     (*ptr)++;
+  }
+
   return ucs4;
 }