1 files changed, 107 insertions, 0 deletions

diff --git a/toxencryptsave/crypto_pwhash_scryptsalsa208sha256/scrypt_platform.c b/toxencryptsave/crypto_pwhash_scryptsalsa208sha256/scrypt_platform.c
new file mode 100644
index 00000000..58196514
--- /dev/null
+++ b/toxencryptsave/crypto_pwhash_scryptsalsa208sha256/scrypt_platform.c
@@ -0,0 +1,107 @@
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+#ifdef  VANILLA_NACL /* toxcore only uses this when libsodium is unavailable */
+
+/*-
+ * Copyright 2013 Alexander Peslyak
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifdef HAVE_SYS_MMAN_H
+# include <sys/mman.h>
+#endif
+#include <errno.h>
+#include <stdlib.h>
+
+#include "crypto_scrypt.h"
+#include "runtime.h"
+
+#if !defined(MAP_ANON) && defined(MAP_ANONYMOUS)
+# define MAP_ANON MAP_ANONYMOUS
+#endif
+
+void *
+alloc_region(escrypt_region_t * region, size_t size)
+{
+        uint8_t * base, * aligned;
+#ifdef MAP_ANON
+        if ((base = (uint8_t *) mmap(NULL, size, PROT_READ | PROT_WRITE,
+#ifdef MAP_NOCORE
+            MAP_ANON | MAP_PRIVATE | MAP_NOCORE,
+#else
+            MAP_ANON | MAP_PRIVATE,
+#endif
+            -1, 0)) == MAP_FAILED)
+                base = NULL;
+        aligned = base;
+#elif defined(HAVE_POSIX_MEMALIGN)
+        if ((errno = posix_memalign((void **) &base, 64, size)) != 0)
+                base = NULL;
+        aligned = base;
+#else
+        base = aligned = NULL;
+        if (size + 63 < size)
+                errno = ENOMEM;
+        else if ((base = (uint8_t *) malloc(size + 63)) != NULL) {
+                aligned = base + 63;
+                aligned -= (uintptr_t)aligned & 63;
+        }
+#endif
+        region->base = base;
+        region->aligned = aligned;
+        region->size = base ? size : 0;
+        return aligned;
+}
+
+static inline void
+init_region(escrypt_region_t * region)
+{
+        region->base = region->aligned = NULL;
+        region->size = 0;
+}
+
+int
+free_region(escrypt_region_t * region)
+{
+        if (region->base) {
+#ifdef MAP_ANON
+                if (munmap(region->base, region->size))
+                        return -1;
+#else
+                free(region->base);
+#endif
+        }
+        init_region(region);
+        return 0;
+}
+
+int
+escrypt_init_local(escrypt_local_t * local)
+{
+        init_region(local);
+        return 0;
+}
+
+int
+escrypt_free_local(escrypt_local_t * local)
+{
+        return free_region(local);
+}
+
+#endif