Change HAVE_NETTLEHASH compile-time to HAVE_CRYPTOHASH.

HAVE_NETTLEHASH is retained for backwards compatibility, but deprecated.

src/config.h

@@ -120,8 +120,8 @@ HAVE_AUTH
    define this to include the facility to act as an authoritative DNS
    server for one or more zones.
 
-HAVE_NETTLEHASH
-   include just hash function from nettle, but no DNSSEC.
+HAVE_CRYPTOHASH
+   include just hash function from crypto library, but no DNSSEC.
 
 HAVE_DNSSEC
    include DNSSEC validator.
@@ -190,7 +190,7 @@ RESOLVFILE
 /* #define HAVE_IDN */
 /* #define HAVE_LIBIDN2 */
 /* #define HAVE_CONNTRACK */
-/* #define HAVE_NETTLEHASH */
+/* #define HAVE_CRYPTOHASH */
 /* #define HAVE_DNSSEC */
 
 
@@ -424,10 +424,10 @@ static char *compile_opts =
 "no-"
 #endif
 "auth "
-#if !defined(HAVE_NETTLEHASH) && !defined(HAVE_DNSSEC)
+#if !defined(HAVE_CRYPTOHASH) && !defined(HAVE_DNSSEC)
 "no-"
 #endif
-"nettlehash "
+"cryptohash "
 #ifndef HAVE_DNSSEC
 "no-"
 #endif

src/crypto.c

@@ -27,7 +27,7 @@
 #endif
 #endif
 
-#if defined(HAVE_DNSSEC) || defined(HAVE_NETTLEHASH)
+#if defined(HAVE_DNSSEC) || defined(HAVE_CRYPTOHASH)
 #include <nettle/nettle-meta.h>
 #include <nettle/bignum.h>
 

src/dnsmasq.h

@@ -157,7 +157,11 @@ extern int capget(cap_user_header_t header, cap_user_data_t data);
 #include <priv.h>
 #endif
 
-#if defined(HAVE_DNSSEC) || defined(HAVE_NETTLEHASH)
+/* Backwards compat with 2.83 */
+#if defined(HAVE_NETTLEHASH)
+#  define HAVE_CRYPTOHASH
+#endif
+#if defined(HAVE_DNSSEC) || defined(HAVE_CRYPTOHASH)
 #  include <nettle/nettle-meta.h>
 #endif
 

src/hash_questions.c

@@ -28,7 +28,7 @@
 
 #include "dnsmasq.h"
 
-#if defined(HAVE_DNSSEC) || defined(HAVE_NETTLEHASH)
+#if defined(HAVE_DNSSEC) || defined(HAVE_CRYPTOHASH)
 
 static const struct nettle_hash *hash;
 static void *ctx;
@@ -71,7 +71,7 @@ unsigned char *hash_questions(struct dns_header *header, size_t plen, char *name
   return digest;
 }
 
-#else /* HAVE_DNSSEC */
+#else /* HAVE_DNSSEC  || HAVE_CRYPTOHASH */
 
 #define SHA256_BLOCK_SIZE 32            // SHA256 outputs a 32 byte digest
 typedef unsigned char BYTE;             // 8-bit byte