bind: add libressl-enabling patch

Besides the version bump we also require this patch, which is upstream.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/bind/0001-Fix-LibreSSL-compatibility.-RT-40977.patch

@@ -0,0 +1,129 @@
+From f824c65d1fb6a2490b03228e63cc43dae6844f73 Mon Sep 17 00:00:00 2001
+From: Mark Andrews <marka@isc.org>
+Date: Mon, 19 Oct 2015 10:43:58 +1100
+Subject: [PATCH] 4340.  [port]          Fix LibreSSL compatibility. [RT
+ #40977]
+
+Status: upstream git
+
+Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
+---
+ lib/dns/dst_openssl.h     | 2 +-
+ lib/dns/openssl_link.c    | 8 ++++----
+ lib/dns/openssldh_link.c  | 4 ++--
+ lib/dns/openssldsa_link.c | 4 ++--
+ lib/dns/opensslrsa_link.c | 2 +-
+
+diff --git a/lib/dns/dst_openssl.h b/lib/dns/dst_openssl.h
+index dd67405..12f8bfc 100644
+--- a/lib/dns/dst_openssl.h
++++ b/lib/dns/dst_openssl.h
+@@ -36,7 +36,7 @@
+ #define USE_ENGINE 1
+ #endif
+ 
+-#if OPENSSL_VERSION_NUMBER < 0x10100000L
++#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
+ /*
+  * These are new in OpenSSL 1.1.0.  BN_GENCB _cb needs to be declared in
+  * the function like this before the BN_GENCB_new call:
+diff --git a/lib/dns/openssl_link.c b/lib/dns/openssl_link.c
+index 8683bee..6a52b31 100644
+--- a/lib/dns/openssl_link.c
++++ b/lib/dns/openssl_link.c
+@@ -88,7 +88,7 @@ entropy_getpseudo(unsigned char *buf, int num) {
+ 	return (result == ISC_R_SUCCESS ? 1 : -1);
+ }
+ 
+-#if OPENSSL_VERSION_NUMBER < 0x10100000L
++#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
+ static void
+ entropy_add(const void *buf, int num, double entropy) {
+ 	/*
+@@ -121,7 +121,7 @@ lock_callback(int mode, int type, const char *file, int line) {
+ 		UNLOCK(&locks[type]);
+ }
+ 
+-#if OPENSSL_VERSION_NUMBER < 0x10100000L
++#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
+ static unsigned long
+ id_callback(void) {
+ 	return ((unsigned long)isc_thread_self());
+@@ -187,7 +187,7 @@ dst__openssl_init(const char *engine) {
+ 	if (result != ISC_R_SUCCESS)
+ 		goto cleanup_mutexalloc;
+ 	CRYPTO_set_locking_callback(lock_callback);
+-#if OPENSSL_VERSION_NUMBER < 0x10100000L
++#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
+ 	CRYPTO_set_id_callback(id_callback);
+ #endif
+ 
+@@ -287,7 +287,7 @@ dst__openssl_destroy(void) {
+ 	CRYPTO_cleanup_all_ex_data();
+ #endif
+ 	ERR_clear_error();
+-#if OPENSSL_VERSION_NUMBER < 0x10100000L
++#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
+ 	ERR_remove_state(0);
+ #endif
+ 	ERR_free_strings();
+diff --git a/lib/dns/openssldh_link.c b/lib/dns/openssldh_link.c
+index 9f42219..67fbf69 100644
+--- a/lib/dns/openssldh_link.c
++++ b/lib/dns/openssldh_link.c
+@@ -173,7 +173,7 @@ openssldh_generate(dst_key_t *key, int generator, void (*callback)(int)) {
+ 	DH *dh = NULL;
+ #if OPENSSL_VERSION_NUMBER > 0x00908000L
+ 	BN_GENCB *cb;
+-#if OPENSSL_VERSION_NUMBER < 0x10100000L
++#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
+ 	BN_GENCB _cb;
+ #endif
+ 	union {
+@@ -210,7 +210,7 @@ openssldh_generate(dst_key_t *key, int generator, void (*callback)(int)) {
+ 		if (dh == NULL)
+ 			return (dst__openssl_toresult(ISC_R_NOMEMORY));
+ 		cb = BN_GENCB_new();
+-#if OPENSSL_VERSION_NUMBER >= 0x10100000L
++#if OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined(LIBRESSL_VERSION_NUMBER)
+ 		if (cb == NULL) {
+ 			DH_free(dh);
+ 			return (dst__openssl_toresult(ISC_R_NOMEMORY));
+diff --git a/lib/dns/openssldsa_link.c b/lib/dns/openssldsa_link.c
+index 963e2f5..d47b265 100644
+--- a/lib/dns/openssldsa_link.c
++++ b/lib/dns/openssldsa_link.c
+@@ -359,7 +359,7 @@ openssldsa_generate(dst_key_t *key, int unused, void (*callback)(int)) {
+ 	isc_result_t result;
+ #if OPENSSL_VERSION_NUMBER > 0x00908000L
+ 	BN_GENCB *cb;
+-#if OPENSSL_VERSION_NUMBER < 0x10100000L
++#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
+ 	BN_GENCB _cb;
+ #endif
+ 	union {
+@@ -383,7 +383,7 @@ openssldsa_generate(dst_key_t *key, int unused, void (*callback)(int)) {
+ 	if (dsa == NULL)
+ 		return (dst__openssl_toresult(DST_R_OPENSSLFAILURE));
+ 	cb = BN_GENCB_new();
+-#if OPENSSL_VERSION_NUMBER >= 0x10100000L
++#if OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined(LIBRESSL_VERSION_NUMBER)
+ 	if (cb == NULL) {
+ 		DSA_free(dsa);
+ 		return (dst__openssl_toresult(DST_R_OPENSSLFAILURE));
+diff --git a/lib/dns/opensslrsa_link.c b/lib/dns/opensslrsa_link.c
+index 94aced2..d799be0 100644
+--- a/lib/dns/opensslrsa_link.c
++++ b/lib/dns/opensslrsa_link.c
+@@ -771,7 +771,7 @@ opensslrsa_generate(dst_key_t *key, int exp, void (*callback)(int)) {
+ 	} u;
+ 	RSA *rsa = RSA_new();
+ 	BIGNUM *e = BN_new();
+-#if OPENSSL_VERSION_NUMBER < 0x10100000L
++#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
+ 	BN_GENCB _cb;
+ #endif
+ 	BN_GENCB *cb = BN_GENCB_new();
+-- 
+2.4.10
+