Set up autotools build to build against vanilla NaCl.

Fixes #363.

auto_tests/crypto_test.c

@@ -338,8 +338,8 @@ START_TEST(test_memzero)
 }
 END_TEST
 
-#define CRYPTO_TEST_MEMCMP_SIZE 1024*32
-#define CRYPTO_TEST_MEMCMP_COUNT 500
+#define CRYPTO_TEST_MEMCMP_SIZE 1024*256
+#define CRYPTO_TEST_MEMCMP_COUNT 1000
 #define CRYPTO_TEST_MEMCMP_EPS 10
 
 static int cmp(const void *a, const void *b)
@@ -389,8 +389,11 @@ START_TEST(test_memcmp)
     uint8_t not_same[sizeof(src)];
     rand_bytes(not_same, sizeof(not_same));
 
+    printf("timing memcmp (equal arrays)\n");
     clock_t same_median = memcmp_median(src, same, sizeof(src));
+    printf("timing memcmp (non-equal arrays)\n");
     clock_t not_same_median = memcmp_median(src, not_same, sizeof(src));
+    printf("comparing times\n");
 
     clock_t delta;
 

other/travis/autotools-linux-install

@@ -1,3 +1,14 @@
 #!/bin/sh
 
 . other/travis/toxcore-linux-install
+
+# Also install vanilla NaCl
+[ -f $CACHE_DIR/lib/amd64/libnacl.a ] || {
+  curl https://hyperelliptic.org/nacl/nacl-20110221.tar.bz2 | tar -jxf
+  cd nacl-20110221 # pushd
+  "./do"
+  # "make install"
+  mv build/*/include/* $CACHE_DIR/include
+  mv build/*/lib/* $CACHE_DIR/lib
+  cd - # popd
+}

other/travis/autotools-script

@@ -3,8 +3,9 @@
 # Build toxcore and run tests.
 ./autogen.sh
 ./configure \
-  --with-libsodium-libs=$CACHE_DIR/lib \
-  --with-libsodium-headers=$CACHE_DIR/include \
+  --with-nacl-libs=$CACHE_DIR/lib/amd64 \
+  --with-nacl-headers=$CACHE_DIR/include/amd64 \
+  --enable-nacl \
   --enable-daemon \
   --enable-logging \
   --enable-ntox \

toxencryptsave/toxencryptsave.c

@@ -31,8 +31,10 @@
 #define SET_ERROR_PARAMETER(param, x) {if(param) {*param = x;}}
 
 #ifdef VANILLA_NACL
+#include <crypto_box.h>
 #include <crypto_hash_sha256.h>
 #include "crypto_pwhash_scryptsalsa208sha256/crypto_pwhash_scryptsalsa208sha256.h"
+#define crypto_box_MACBYTES (crypto_box_ZEROBYTES - crypto_box_BOXZEROBYTES)
 #else
 #include <sodium.h>
 #endif