Inital import.

Initial fork from f2d678e6e89b6508147086610e985d4e8416e867 (1.0.2 beta).

(This change contains substantial changes from the original and
effectively starts a new history.)

1 files changed, 140 insertions, 0 deletions

diff --git a/crypto/mem.c b/crypto/mem.c
new file mode 100644
index 00000000..8a8482c8
--- /dev/null
+++ b/crypto/mem.c
@@ -0,0 +1,140 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``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.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#define _BSD_SOURCE /* needed for strdup, snprintf, vprintf etc */
+
+#include <openssl/mem.h>
+
+#include <assert.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <string.h>
+
+
+void *OPENSSL_realloc_clean(void *ptr, size_t old_size, size_t new_size) {
+  void *ret = NULL;
+
+  if (ptr == NULL) {
+    return OPENSSL_malloc(new_size);
+  }
+
+  if (new_size == 0) {
+    return NULL;
+  }
+
+  /* We don't support shrinking the buffer. Note the memcpy that copies
+   * |old_size| bytes to the new buffer, below. */
+  if (new_size < old_size) {
+    return NULL;
+  }
+
+  ret = OPENSSL_malloc(new_size);
+  if (ret == NULL) {
+    return NULL;
+  }
+
+  memcpy(ret, ptr, old_size);
+  OPENSSL_cleanse(ptr, old_size);
+  OPENSSL_free(ptr);
+  return ret;
+}
+
+int CRYPTO_memcmp(const void *in_a, const void *in_b, size_t len) {
+  size_t i;
+  const uint8_t *a = in_a;
+  const uint8_t *b = in_b;
+  uint8_t x = 0;
+
+  for (i = 0; i < len; i++) {
+    x |= a[i] ^ b[i];
+  }
+
+  return x;
+}
+
+uint32_t OPENSSL_hash32(const void *ptr, size_t len) {
+  /* These are the FNV-1a parameters for 32 bits. */
+  static const uint32_t kPrime = 16777619u;
+  static const uint32_t kOffsetBasis = 2166136261u;
+
+  const uint8_t *in = ptr;
+  size_t i;
+  uint32_t h = kOffsetBasis;
+
+  for (i = 0; i < len; i++) {
+    h ^= in[i];
+    h *= kPrime;
+  }
+
+  return h;
+}
+
+char *OPENSSL_strdup(const char *s) { return strdup(s); }
+
+int BIO_snprintf(char *buf, size_t n, const char *format, ...) {
+  va_list args;
+  int ret;
+
+  va_start(args, format);
+
+  ret = BIO_vsnprintf(buf, n, format, args);
+
+  va_end(args);
+  return ret;
+}
+
+int BIO_vsnprintf(char *buf, size_t n, const char *format, va_list args) {
+  return vsnprintf(buf, n, format, args);
+}