1 files changed, 115 insertions, 0 deletions
diff --git a/nbase/nbase_memalloc.c b/nbase/nbase_memalloc.c
new file mode 100644
index 0000000..4fccc1e
--- /dev/null
+++ b/nbase/nbase_memalloc.c
@@ -0,0 +1,115 @@
+
+/***************************************************************************
+ * nbase_memalloc.c -- A few simple functions related to memory            *
+ * allocation.  Right now they are just safe_ versions of well known calls *
+ * like malloc that quit if the allocation fails (so you don't have to     *
+ * have a bunch of ugly checks in your code.  These were written by        *
+ * fyodor@nmap.org .                                                   *
+ *                                                                         *
+ ***********************IMPORTANT NMAP LICENSE TERMS************************
+ *
+ * The Nmap Security Scanner is (C) 1996-2023 Nmap Software LLC ("The Nmap
+ * Project"). Nmap is also a registered trademark of the Nmap Project.
+ *
+ * This program is distributed under the terms of the Nmap Public Source
+ * License (NPSL). The exact license text applying to a particular Nmap
+ * release or source code control revision is contained in the LICENSE
+ * file distributed with that version of Nmap or source code control
+ * revision. More Nmap copyright/legal information is available from
+ * https://nmap.org/book/man-legal.html, and further information on the
+ * NPSL license itself can be found at https://nmap.org/npsl/ . This
+ * header summarizes some key points from the Nmap license, but is no
+ * substitute for the actual license text.
+ *
+ * Nmap is generally free for end users to download and use themselves,
+ * including commercial use. It is available from https://nmap.org.
+ *
+ * The Nmap license generally prohibits companies from using and
+ * redistributing Nmap in commercial products, but we sell a special Nmap
+ * OEM Edition with a more permissive license and special features for
+ * this purpose. See https://nmap.org/oem/
+ *
+ * If you have received a written Nmap license agreement or contract
+ * stating terms other than these (such as an Nmap OEM license), you may
+ * choose to use and redistribute Nmap under those terms instead.
+ *
+ * The official Nmap Windows builds include the Npcap software
+ * (https://npcap.com) for packet capture and transmission. It is under
+ * separate license terms which forbid redistribution without special
+ * permission. So the official Nmap Windows builds may not be redistributed
+ * without special permission (such as an Nmap OEM license).
+ *
+ * Source is provided to this software because we believe users have a
+ * right to know exactly what a program is going to do before they run it.
+ * This also allows you to audit the software for security holes.
+ *
+ * Source code also allows you to port Nmap to new platforms, fix bugs, and add
+ * new features. You are highly encouraged to submit your changes as a Github PR
+ * or by email to the dev@nmap.org mailing list for possible incorporation into
+ * the main distribution. Unless you specify otherwise, it is understood that
+ * you are offering us very broad rights to use your submissions as described in
+ * the Nmap Public Source License Contributor Agreement. This is important
+ * because we fund the project by selling licenses with various terms, and also
+ * because the inability to relicense code has caused devastating problems for
+ * other Free Software projects (such as KDE and NASM).
+ *
+ * The free version of Nmap is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Warranties,
+ * indemnification and commercial support are all available through the
+ * Npcap OEM program--see https://nmap.org/oem/
+ *
+ ***************************************************************************/
+
+/* $Id$ */
+
+#include "nbase.h"
+#include <stdio.h>
+
+NORETURN static void fatal(char *fmt, ...)
+  __attribute__ ((format (printf, 1, 2)));
+
+static void fatal(char *fmt, ...) {
+  va_list ap;
+
+  va_start(ap, fmt);
+  fflush(stdout);
+  vfprintf(stderr, fmt, ap);
+  fprintf(stderr, "\nQUITTING!\n");
+  va_end(ap);
+  exit(1);
+}
+
+void *safe_malloc(size_t size) {
+  void *mymem;
+
+  if ((int)size < 0)            /* Catch caller errors */
+    fatal("Tried to malloc negative amount of memory!!!");
+  mymem = malloc(size);
+  if (mymem == NULL)
+    fatal("Malloc Failed! Probably out of space.");
+  return mymem;
+}
+
+void *safe_realloc(void *ptr, size_t size) {
+  void *mymem;
+
+  if ((int)size < 0)            /* Catch caller errors */
+    fatal("Tried to realloc negative amount of memory!!!");
+  mymem = realloc(ptr, size);
+  if (mymem == NULL)
+    fatal("Realloc Failed! Probably out of space.");
+  return mymem;
+}
+
+/* Zero-initializing version of safe_malloc */
+void *safe_zalloc(size_t size) {
+  void *mymem;
+
+  if ((int)size < 0)
+    fatal("Tried to malloc negative amount of memory!!!");
+  mymem = calloc(1, size);
+  if (mymem == NULL)
+    fatal("Malloc Failed! Probably out of space.");
+  return mymem;
+}