1 files changed, 101 insertions, 0 deletions
diff --git a/third_party/libsrtp/src/crypto/kernel/alloc.c b/third_party/libsrtp/src/crypto/kernel/alloc.c
new file mode 100644
index 0000000000..3ebc315259
--- /dev/null
+++ b/third_party/libsrtp/src/crypto/kernel/alloc.c
@@ -0,0 +1,101 @@
+/*
+ * alloc.c
+ *
+ * memory allocation and deallocation
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+/*
+ *
+ * Copyright (c) 2001-2017 Cisco Systems, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ *   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.
+ *
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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
+ * COPYRIGHT HOLDERS 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_CONFIG_H
+#include <config.h>
+#endif
+
+#include "alloc.h"
+#include "crypto_kernel.h"
+
+/* the debug module for memory allocation */
+
+srtp_debug_module_t srtp_mod_alloc = {
+    0,      /* debugging is off by default */
+    "alloc" /* printable name for module   */
+};
+
+/*
+ * Nota bene: the debugging statements for srtp_crypto_alloc() and
+ * srtp_crypto_free() have identical prefixes, which include the addresses
+ * of the memory locations on which they are operating.  This fact can
+ * be used to locate memory leaks, by turning on memory debugging,
+ * grepping for 'alloc', then matching alloc and free calls by
+ * address.
+ */
+
+#if defined(HAVE_STDLIB_H)
+
+void *srtp_crypto_alloc(size_t size)
+{
+    void *ptr;
+
+    if (!size) {
+        return NULL;
+    }
+
+    ptr = calloc(1, size);
+
+    if (ptr) {
+        debug_print(srtp_mod_alloc, "(location: %p) allocated", ptr);
+    } else {
+        debug_print(srtp_mod_alloc, "allocation failed (asked for %zu bytes)\n",
+                    size);
+    }
+
+    return ptr;
+}
+
+void srtp_crypto_free(void *ptr)
+{
+    debug_print(srtp_mod_alloc, "(location: %p) freed", ptr);
+
+    free(ptr);
+}
+
+#else /* we need to define our own memory allocation routines */
+
+#error no memory allocation defined yet
+
+#endif