File fix-CVE-2022-23527-2.patch of Package apache2-mod_auth_openidc.28532

From 1c808c58d407576a438800f0bc11ffe55ee8837a Mon Sep 17 00:00:00 2001
From: Hans Zandbelt <hans.zandbelt@zmartzone.eu>
Date: Tue, 23 Aug 2022 14:34:00 +0200
Subject: [PATCH] add oidc_util_strcasestr

Signed-off-by: Hans Zandbelt <hans.zandbelt@zmartzone.eu>
---
 ChangeLog  |  3 +++
 src/util.c | 21 ++++++++++++++++++++-
 2 files changed, 23 insertions(+), 1 deletion(-)

Index: mod_auth_openidc-2.3.8/src/util.c
===================================================================
--- mod_auth_openidc-2.3.8.orig/src/util.c
+++ mod_auth_openidc-2.3.8/src/util.c
@@ -449,6 +449,24 @@ char* oidc_util_javascript_escape(apr_po
     return output;
 }
 
+static char* oidc_util_strcasestr(const char *s1, const char *s2) {
+	const char *s = s1;
+	const char *p = s2;
+	do {
+		if (!*p)
+			return (char*) s1;
+		if ((*p == *s) || (tolower(*p) == tolower(*s))) {
+			++p;
+			++s;
+		} else {
+			p = s2;
+			if (!*s)
+				return NULL;
+			s = ++s1;
+		}
+	} while (1);
+	return *p ? NULL : (char*) s1;
+}
 
 /*
  * get the URL scheme that is currently being accessed