From 496afe1f27481eb45ac14df0bfdb287b95eefbdd Mon Sep 17 00:00:00 2001
From: Robert Scheck <redhat-bugzilla@linuxnetz.de>
Date: Fri, 30 May 2014 15:28:54 +0200
Subject: [PATCH] Add support for GNU Libidn2
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Patch by Robert Scheck <robert@fedoraproject.org> for elinks >= 0.12 which replaces current
GNU Libidn support (IDNA 2003) by GNU Libidn2 support (IDNA 2008). This is e.g. allowing
the 'ß' character in domain names. See also the Red Hat Bugzilla #1098789 for some further
information: https://bugzilla.redhat.com/show_bug.cgi?id=1098789

Signed-off-by: Kamil Dudka <kdudka@redhat.com>
---
 Makefile.config.in      |  2 +-
 configure.in            |  4 ++--
 src/osdep/win32/win32.c |  2 +-
 src/protocol/uri.c      | 18 +++++++-----------
 4 files changed, 11 insertions(+), 15 deletions(-)

diff --git a/Makefile.config.in b/Makefile.config.in
index fe1a559..829d350 100644
--- a/Makefile.config.in
+++ b/Makefile.config.in
@@ -130,7 +130,7 @@ CONFIG_GOPHER = @CONFIG_GOPHER@
 CONFIG_GPM = @CONFIG_GPM@
 CONFIG_GZIP = @CONFIG_GZIP@
 CONFIG_HTML_HIGHLIGHT = @CONFIG_HTML_HIGHLIGHT@
-CONFIG_IDN = @CONFIG_IDN@
+CONFIG_IDN2 = @CONFIG_IDN2@
 CONFIG_INTERLINK = @CONFIG_INTERLINK@
 CONFIG_IPV6 = @CONFIG_IPV6@
 CONFIG_JW = @CONFIG_JW@
diff --git a/configure.in b/configure.in
index 3ef8603..3f74d9c 100644
--- a/configure.in
+++ b/configure.in
@@ -473,8 +473,8 @@ EL_CONFIG_OPTIONAL_LIBRARY(CONFIG_GZIP, zlib, zlib.h, z, gzclearerr,
 EL_CONFIG_OPTIONAL_LIBRARY(CONFIG_BZIP2, bzlib, bzlib.h, bz2, BZ2_bzReadOpen,
 	[  --without-bzlib         disable bzlib support])
 
-EL_CONFIG_OPTIONAL_LIBRARY(CONFIG_IDN, idn, idna.h, idn, stringprep_check_version,
-	[  --without-idn           disable international domain names support])
+EL_CONFIG_OPTIONAL_LIBRARY(CONFIG_IDN2, idn2, idn2.h, idn2, idn2_lookup_ul,
+	[  --without-idn2           disable international domain names support])
 
 if test "x${with_gc}" != xno; then
 	EL_CONFIG_OPTIONAL_LIBRARY(CONFIG_GC, gc, gc.h, gc, GC_init,
diff --git a/src/osdep/win32/win32.c b/src/osdep/win32/win32.c
index 66b2128..e870a6e 100644
--- a/src/osdep/win32/win32.c
+++ b/src/osdep/win32/win32.c
@@ -48,7 +48,7 @@ init_osdep(void)
 #ifdef HAVE_LOCALE_H
 	setlocale(LC_ALL, "");
 #endif
-#ifdef CONFIG_IDN
+#ifdef CONFIG_IDN2
 	{
 		char buf[60];
 		UINT cp = GetACP();
diff --git a/src/protocol/uri.c b/src/protocol/uri.c
index 5e23ea2..8987567 100644
--- a/src/protocol/uri.c
+++ b/src/protocol/uri.c
@@ -6,8 +6,8 @@
 
 #include <ctype.h>
 #include <errno.h>
-#ifdef HAVE_IDNA_H
-#include <idna.h>
+#ifdef HAVE_IDN2_H
+#include <idn2.h>
 #endif
 #include <stdio.h>
 #include <stdlib.h>
@@ -531,24 +531,20 @@ add_uri_to_string(struct string *string, const struct uri *uri,
 		 * --pasky */
 		if (uri->ipv6 && wants(URI_PORT)) add_char_to_string(string, '[');
 #endif
-#ifdef CONFIG_IDN
+#ifdef CONFIG_IDN2
 		/* Support for the GNU International Domain Name library.
 		 *
-		 * http://www.gnu.org/software/libidn/manual/html_node/IDNA-Functions.html
-		 *
-		 * Now it is probably not perfect because idna_to_ascii_lz()
-		 * will be using a ``zero terminated input string encoded in
-		 * the current locale's character set''. Anyway I don't know
-		 * how to convert anything to UTF-8 or Unicode. --jonas */
+		 * http://www.gnu.org/software/libidn/libidn2/manual/libidn2.html
+		 */
 		if (wants(URI_IDN)) {
 			unsigned char *host = memacpy(uri->host, uri->hostlen);
 
 			if (host) {
 				char *idname;
-				int code = idna_to_ascii_lz(host, &idname, 0);
+				int code = idn2_lookup_ul(host, &idname, 0);
 
 				/* FIXME: Return NULL if it coughed? --jonas */
-				if (code == IDNA_SUCCESS) {
+				if (code == IDN2_OK) {
 					add_to_string(string, idname);
 					free(idname);
 					add_host = 0;
-- 
1.9.3