Initial patch for Chrome NaCl implementation

configure.ac

@@ -428,6 +428,8 @@ AS_IF([test "x$EMSCRIPTEN" != "x"],[
 AC_SUBST(TEST_LDFLAGS)
 AM_CONDITIONAL([EMSCRIPTEN], [test "x$EMSCRIPTEN" != "x"])
 
+AM_CONDITIONAL([NATIVECLIENT], [test "x$NATIVECLIENT" != "x"])
+
 dnl Libtool.
 
 LT_INIT([dlopen])

src/libsodium/Makefile.am

@@ -157,9 +157,15 @@ libsodium_la_SOURCES = \
 
 if !EMSCRIPTEN
 libsodium_la_SOURCES += \
-	randombytes/salsa20/randombytes_salsa20_random.c \
+	randombytes/salsa20/randombytes_salsa20_random.c
+if NATIVECLIENT
+libsodium_la_SOURCES += \
+	randombytes/nativeclient/randombytes_nativeclient.c
+else
+libsodium_la_SOURCES += \
     randombytes/sysrandom/randombytes_sysrandom.c
 endif
+endif
 
 if HAVE_TI_MODE
 libsodium_la_SOURCES += \

src/libsodium/include/Makefile.am

@@ -50,6 +50,7 @@ SODIUM_EXPORT = \
 	sodium/randombytes.h \
 	sodium/randombytes_salsa20_random.h \
 	sodium/randombytes_sysrandom.h \
+	sodium/randombytes_nativeclient.h \
 	sodium/runtime.h \
 	sodium/utils.h
 

src/libsodium/include/sodium.h

@@ -43,6 +43,7 @@
 #include "sodium/randombytes.h"
 #include "sodium/randombytes_salsa20_random.h"
 #include "sodium/randombytes_sysrandom.h"
+#include "sodium/randombytes_nativeclient.h"
 #include "sodium/runtime.h"
 #include "sodium/utils.h"
 #include "sodium/version.h"

src/libsodium/include/sodium/randombytes_nativeclient.h

@@ -0,0 +1,43 @@
+
+#ifndef randombytes_nativeclient_H
+#define randombytes_nativeclient_H
+
+/*
+ * THREAD SAFETY: TODO 
+ */
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include "export.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+SODIUM_EXPORT
+extern struct randombytes_implementation randombytes_nativeclient_implementation;
+
+SODIUM_EXPORT
+const char *randombytes_nativeclient_implementation_name(void);
+
+SODIUM_EXPORT
+uint32_t    randombytes_nativeclient(void);
+
+SODIUM_EXPORT
+void        randombytes_nativeclient_stir(void);
+
+SODIUM_EXPORT
+uint32_t    randombytes_nativeclient_uniform(const uint32_t upper_bound);
+
+SODIUM_EXPORT
+void        randombytes_nativeclient_buf(void * const buf, const size_t size);
+
+SODIUM_EXPORT
+int         randombytes_nativeclient_close(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

src/libsodium/randombytes/nativeclient/randombytes_nativeclient.c

@@ -0,0 +1,56 @@
+#include <assert.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+#include "nacl/nacl_random.h"
+#include "utils.h"
+#include "randombytes.h"
+#include "randombytes_nativeclient.h"
+
+void
+randombytes_nativeclient_random_stir(void)
+{
+}
+
+int
+randombytes_nativeclient_random_close(void)
+{
+    return 0;
+}
+
+uint32_t
+randombytes_nativeclient_random(void)
+{
+    uint32_t r;
+
+    randombytes_nativeclient_buf(&r, sizeof r);
+
+    return r;
+}
+
+void
+randombytes_nativeclient_buf(void * const buf, const size_t size)
+{
+    size_t readnb;
+
+    if (nacl_secure_random(buf, size, &readnb) != 0) {
+        abort();
+    }
+
+    assert(readnb == size);
+}
+
+const char *
+randombytes_nativeclient_implementation_name(void)
+{
+    return "nativeclient";
+}
+
+struct randombytes_implementation randombytes_nativeclient_implementation = {
+    SODIUM_C99(.implementation_name =) randombytes_nativeclient_implementation_name,
+    SODIUM_C99(.random =) randombytes_nativeclient_random,
+    SODIUM_C99(.stir =) randombytes_nativeclient_random_stir,
+    SODIUM_C99(.uniform =) NULL,
+    SODIUM_C99(.buf =) randombytes_nativeclient_buf,
+    SODIUM_C99(.close =) randombytes_nativeclient_random_close
+};

src/libsodium/randombytes/randombytes.c

@@ -11,10 +11,16 @@
 
 #include "randombytes.h"
 #include "randombytes_sysrandom.h"
+#include "randombytes_nativeclient.h"
 
 #ifndef __EMSCRIPTEN__
+#ifdef __native_client__
+static const randombytes_implementation *implementation =
+    &randombytes_nativeclient_implementation;
+#else
 static const randombytes_implementation *implementation =
     &randombytes_sysrandom_implementation;
+#endif
 #else
 static const randombytes_implementation *implementation = NULL;
 #endif

test/default/Makefile.am

@@ -190,10 +190,12 @@ TESTS_TARGETS = \
 	verify1
 
 if !EMSCRIPTEN
+if !NATIVECLIENT
 TESTS_TARGETS += \
 	sodium_utils2 \
 	sodium_utils3
 endif
+endif
 
 check_PROGRAMS = $(TESTS_TARGETS)
 
@@ -373,4 +375,8 @@ stream4_LDADD             = $(TESTS_LDADD)
 verify1_SOURCE            = cmptest.h verify1.c
 verify1_LDADD             = $(TESTS_LDADD)
 
+if NATIVECLIENT
+LOG_COMPILER = ./nacl-test-wrapper.sh
+endif
+
 verify: check

test/default/nacl-test-wrapper.sh

@@ -0,0 +1,25 @@
+#!/bin/bash
+
+if [ -z "$NACL_SDK_ROOT" -o -z "$PNACL_TRANSLATE" -o -z "$PNACL_FINALIZE" ]
+then
+	echo "One or more variables need to be set:
+	\$NACL_SDK_ROOT=$NACL_SDK_ROOT
+	\$PNACL_TRANSLATE=$PNACL_TRANSLATE
+	\$PNACL_FINALIZE=$PNACL_FINALIZE"
+	exit 1
+fi
+
+if [ ! -f "$1.nexe" ]
+then
+	$PNACL_FINALIZE "$1" -o "$1.final"
+	$PNACL_TRANSLATE -arch `uname -m` "$1.final" -o "$1.nexe"
+fi
+
+command -v python >/dev/null 2>&1 || { echo >&2 "I require python but it's not installed. Aborting."; exit 1; }
+ANY=(`find $NACL_SDK_ROOT -name sel_ldr.py`)
+if [ -z ${ANY[0]} ]
+then
+	echo "Couldn't find a sel_ldr.py under $NACL_SDK_ROOT"
+	exit 1
+fi
+python ${ANY[0]} "$1.nexe"

test/default/randombytes.c

@@ -105,7 +105,11 @@ static uint32_t randombytes_uniform_impl(const uint32_t upper_bound)
 
 static int impl_tests(void)
 {
+#ifndef __native_client__
     randombytes_implementation impl = randombytes_sysrandom_implementation;
+#else
+    randombytes_implementation impl = randombytes_nativeclient_implementation;
+#endif
     uint32_t                   v = randombytes_random();
 
     impl.uniform = randombytes_uniform_impl;