From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stefan Schantl <stefan.schantl@ipfire.org>
To: development@lists.ipfire.org
Subject: [PATCH] docbook-xsl: Add patch to fix problematic recursed strings.
Date: Sun, 26 Feb 2023 14:28:38 +0100
Message-ID: <20230226132838.380708-1-stefan.schantl@ipfire.org>
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This fixes the following error messages:
xsltApplySequenceConstructor: A potential infinite template recursion was det=
ected.

Signed-off-by: Stefan Schantl <stefan.schantl(a)ipfire.org>
---
 docbook-xsl/docbook-xsl.nm                    |  2 +-
 .../765567_non-recursive_string_subst.patch2  | 32 +++++++++++++++++++
 2 files changed, 33 insertions(+), 1 deletion(-)
 create mode 100644 docbook-xsl/patches/765567_non-recursive_string_subst.pat=
ch2

diff --git a/docbook-xsl/docbook-xsl.nm b/docbook-xsl/docbook-xsl.nm
index f3a7a11b2..c1c5caf3c 100644
--- a/docbook-xsl/docbook-xsl.nm
+++ b/docbook-xsl/docbook-xsl.nm
@@ -5,7 +5,7 @@
=20
 name       =3D docbook-xsl
 version    =3D 1.79.2
-release    =3D 1
+release    =3D 2
 arch       =3D noarch
=20
 groups     =3D Applications/Text
diff --git a/docbook-xsl/patches/765567_non-recursive_string_subst.patch2 b/d=
ocbook-xsl/patches/765567_non-recursive_string_subst.patch2
new file mode 100644
index 000000000..ae845ad00
--- /dev/null
+++ b/docbook-xsl/patches/765567_non-recursive_string_subst.patch2
@@ -0,0 +1,32 @@
+Description: use EXSLT "replace" function when available
+ A recursive implementation  of string.subst is problematic,
+ long strings with many matches will cause stack overflows.
+Author: Peter De Wachter <pdewacht(a)gmail.com>
+Bug-Debian: https://bugs.debian.org/750593
+
+--- docbook-xsl-1.78.1+dfsg.orig/docbook-xsl/lib/lib.xsl
++++ docbook-xsl-1.78.1+dfsg/docbook-xsl/lib/lib.xsl
+@@ -6,7 +6,11 @@
+=20
+      This module implements DTD-independent functions
+=20
+-     ******************************************************************** -=
-><xsl:stylesheet xmlns:xsl=3D"http://www.w3.org/1999/XSL/Transform" version=
=3D"1.0">
++     ******************************************************************** -=
->
++<xsl:stylesheet xmlns:xsl=3D"http://www.w3.org/1999/XSL/Transform"
++                xmlns:str=3D"http://exslt.org/strings"
++                exclude-result-prefixes=3D"str"
++                version=3D"1.0">
+=20
+ <xsl:template name=3D"dot.count">
+   <!-- Returns the number of "." characters in a string -->
+@@ -52,6 +56,9 @@
+   <xsl:param name=3D"replacement"/>
+=20
+   <xsl:choose>
++    <xsl:when test=3D"function-available('str:replace')">
++      <xsl:value-of select=3D"str:replace($string, string($target), string(=
$replacement))"/>
++    </xsl:when>
+     <xsl:when test=3D"contains($string, $target)">
+       <xsl:variable name=3D"rest">
+         <xsl:call-template name=3D"string.subst">
+
--=20
2.30.2


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