File 0002-vcc.y-fix-infinite-loop-with-lower-case-hex-digits.patch of Package libical

From bf83a0d664f46229836852f5b41539c263c3b921 Mon Sep 17 00:00:00 2001
From: Jan Engelhardt <jengelh@inai.de>
Date: Mon, 17 Sep 2018 16:36:36 +0200
Subject: [PATCH 2/5] vcc.y - fix infinite loop with lower-case hex digits
References: https://github.com/libical/libical/pull/354

When lower-case hex digits are used in a quoted-printable-encoded
character, an infinite loop would occur in the vcard parser.

"N;ENCODING=QUOTED-PRINTABLE:=c3=a4=c3=b6;=c3=bC=c3=9f\n"

References: #353
---
 src/libicalvcal/vcc.c | 2 ++
 src/libicalvcal/vcc.y | 2 ++
 2 files changed, 4 insertions(+)

Index: libical-3.0.17/src/libicalvcal/vcc.c
===================================================================
--- libical-3.0.17.orig/src/libicalvcal/vcc.c
+++ libical-3.0.17/src/libicalvcal/vcc.c
@@ -991,6 +991,8 @@ static int hexdigit_decode(char c)
                return c - '0';
        if (c >= 'A' && c <= 'F')
                return c - 'A' + 10;
+       if (c >= 'a' && c <= 'f')
+               return c - 'a' + 10;
        return -1;
 }
 
Index: libical-3.0.17/src/libicalvcal/vcc.y
===================================================================
--- libical-3.0.17.orig/src/libicalvcal/vcc.y
+++ libical-3.0.17/src/libicalvcal/vcc.y
@@ -955,6 +955,8 @@ static int hexdigit_decode(char c)
 		return c - '0';
 	if (c >= 'A' && c <= 'F')
 		return c - 'A' + 10;
+	if (c >= 'a' && c <= 'f')
+		return c - 'a' + 10;
 	return -1;
 }