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/***************************************************************************
* utils.h -- Various miscellaneous utility functions which defy *
* categorization :) *
* *
***********************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 UTILS_H
#define UTILS_H
#ifndef WIN32
#include <sys/mman.h>
#endif
#include "nbase.h"
#include <assert.h>
/* Arithmatic difference modulo 2^32 */
#ifndef MOD_DIFF
#define MOD_DIFF(a,b) ((u32) (MIN((u32)(a) - (u32 ) (b), (u32 )(b) - (u32) (a))))
#endif
/* Arithmatic difference modulo 2^16 */
#ifndef MOD_DIFF_USHORT
#define MOD_DIFF_USHORT(a,b) ((MIN((unsigned short)((unsigned short)(a) - (unsigned short ) (b)), (unsigned short) ((unsigned short )(b) - (unsigned short) (a)))))
#endif
#ifndef FALSE
#define FALSE 0
#endif
#ifndef TRUE
#define TRUE 1
#endif
#define MAX_PARSE_ARGS 254 /* +1 for integrity checking + 1 for null term */
/* Return num if it is between min and max. Otherwise return min or max
(whichever is closest to num). */
template<class T> T box(T bmin, T bmax, T bnum) {
assert(bmin <= bmax);
if (bnum >= bmax)
return bmax;
if (bnum <= bmin)
return bmin;
return bnum;
}
int wildtest(const char *wild, const char *test);
void nmap_hexdump(const unsigned char *cp, unsigned int length);
void genfry(unsigned char *arr, int elem_sz, int num_elem);
void shortfry(unsigned short *arr, int num_elem);
char *chomp(char *string);
int Send(int sd, const void *msg, size_t len, int flags);
int arg_parse(const char *command, char ***argv);
void arg_parse_free(char **argv);
char *cstring_unescape(char *str, unsigned int *len);
void bintohexstr(char *buf, int buflen, const char *src, int srclen);
u8 *parse_hex_string(const char *str, size_t *outlen);
int cpe_get_part(const char *cpe);
char *mmapfile(char *fname, s64 *length, int openflags);
#ifdef WIN32
int win32_munmap(char *filestr, int filelen);
#endif /* WIN32 */
#endif /* UTILS_H */
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