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diff --git a/nmap_error.h b/nmap_error.h
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+
+/***************************************************************************
+ * nmap_error.h -- Some simple error handling routines.                    *
+ *                                                                         *
+ ***********************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/
+ *
+ ***************************************************************************/
+
+/* $Id$ */
+
+#ifndef NMAP_ERROR_H
+#define NMAP_ERROR_H
+
+#ifdef HAVE_CONFIG_H
+#include "nmap_config.h"
+#else
+#ifdef WIN32
+#include "nmap_winconfig.h"
+#endif /* WIN32 */
+#endif /* HAVE_CONFIG_H */
+
+#include <nbase.h>
+
+#ifdef STDC_HEADERS
+#include <stdlib.h>
+#endif
+
+#include <stdarg.h>
+
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+NORETURN void fatal(const char *fmt, ...)
+     __attribute__ ((format (printf, 1, 2)));
+void error(const char *fmt, ...)
+     __attribute__ ((format (printf, 1, 2)));
+
+NORETURN void pfatal(const char *err, ...)
+     __attribute__ ((format (printf, 1, 2)));
+void gh_perror(const char *err, ...)
+     __attribute__ ((format (printf, 1, 2)));
+
+#ifndef HAVE_STRERROR
+char *strerror(int errnum);
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* NMAP_ERROR_H */
+