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/***************************************************************************
* util.h *
***********************IMPORTANT NMAP LICENSE TERMS************************
* *
* The Nmap Security Scanner is (C) 1996-2022 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: util.h 38353 2022-02-18 17:38:46Z dmiller $ */
#ifndef UTIL_H_
#define UTIL_H_
#include "ncat_config.h"
#include "nbase.h"
#ifndef WIN32
#include <sys/types.h>
#include <netinet/in.h>
#endif
#if HAVE_SYS_UN_H
#include <sys/un.h>
#endif
#ifdef HAVE_OPENSSL
#include <openssl/ssl.h>
#endif
/* add/multiply unsigned values safely */
size_t sadd(size_t, size_t);
size_t smul(size_t, size_t);
#ifdef WIN32
void windows_init();
#endif
#include "sockaddr_u.h"
void loguser(const char *fmt, ...)
__attribute__ ((format (printf, 1, 2)));
void loguser_noprefix(const char *fmt, ...)
__attribute__ ((format (printf, 1, 2)));
void logdebug(const char *fmt, ...)
__attribute__ ((format (printf, 1, 2)));
void logtest(const char *fmt, ...)
__attribute__ ((format (printf, 1, 2)));
/* handle errors */
#define ncat_assert(expr) \
do { \
if (!(expr)) \
bye("assertion failed: %s", #expr); \
} while (0)
void die(char *);
NORETURN void bye(const char *, ...)
__attribute__ ((format (printf, 1, 2)));
/* zero out some memory, bzero() is deprecated */
void zmem(void *, size_t);
int strbuf_append(char **buf, size_t *size, size_t *offset, const char *s, size_t n);
int strbuf_append_str(char **buf, size_t *size, size_t *offset, const char *s);
int strbuf_sprintf(char **buf, size_t *size, size_t *offset, const char *fmt, ...)
__attribute__ ((format (printf, 4, 5)));
int addr_is_local(const union sockaddr_u *su);
const char *inet_socktop(const union sockaddr_u *su);
unsigned short inet_port(const union sockaddr_u *su);
int do_listen(int, int, const union sockaddr_u *);
int do_connect(int);
unsigned char *buildsrcrte(struct in_addr dstaddr, struct in_addr routes[],
int numroutes, int ptr, size_t *len);
int allow_access(const union sockaddr_u *su);
void ms_to_timeval(struct timeval *tv, long ms)
__attribute__ ((nonnull));
struct fdinfo {
int fd;
union sockaddr_u remoteaddr;
#ifdef HAVE_OPENSSL
SSL *ssl;
#endif
};
typedef struct fd_list {
struct fdinfo *fds;
int nfds, maxfds, fdmax;
} fd_list_t;
int add_fdinfo(fd_list_t *, struct fdinfo *);
int add_fd(fd_list_t *fdl, int fd);
int rm_fd(fd_list_t *, int);
void free_fdlist(fd_list_t *);
void init_fdlist(fd_list_t *, int);
int get_maxfd(fd_list_t *);
struct fdinfo *get_fdinfo(const fd_list_t *, int);
int fix_line_endings(char *src, int *len, char **dst, int *state);
unsigned char *next_protos_parse(size_t *outlen, const char *in);
#endif
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