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157 lines
8.1 KiB
C
157 lines
8.1 KiB
C
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/***************************************************************************
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* utils_net.cc -- Miscellaneous network-related functions that perform *
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* various tasks. *
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* *
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***********************IMPORTANT NMAP LICENSE TERMS************************
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*
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* The Nmap Security Scanner is (C) 1996-2025 Nmap Software LLC ("The Nmap
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* Project"). Nmap is also a registered trademark of the Nmap Project.
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*
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* This program is distributed under the terms of the Nmap Public Source
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* License (NPSL). The exact license text applying to a particular Nmap
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* release or source code control revision is contained in the LICENSE
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* file distributed with that version of Nmap or source code control
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* revision. More Nmap copyright/legal information is available from
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* https://nmap.org/book/man-legal.html, and further information on the
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* NPSL license itself can be found at https://nmap.org/npsl/ . This
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* header summarizes some key points from the Nmap license, but is no
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* substitute for the actual license text.
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*
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* Nmap is generally free for end users to download and use themselves,
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* including commercial use. It is available from https://nmap.org.
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*
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* The Nmap license generally prohibits companies from using and
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* redistributing Nmap in commercial products, but we sell a special Nmap
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* OEM Edition with a more permissive license and special features for
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* this purpose. See https://nmap.org/oem/
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*
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* If you have received a written Nmap license agreement or contract
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* stating terms other than these (such as an Nmap OEM license), you may
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* choose to use and redistribute Nmap under those terms instead.
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*
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* The official Nmap Windows builds include the Npcap software
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* (https://npcap.com) for packet capture and transmission. It is under
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* separate license terms which forbid redistribution without special
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* permission. So the official Nmap Windows builds may not be redistributed
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* without special permission (such as an Nmap OEM license).
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*
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* Source is provided to this software because we believe users have a
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* right to know exactly what a program is going to do before they run it.
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* This also allows you to audit the software for security holes.
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*
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* Source code also allows you to port Nmap to new platforms, fix bugs, and
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* add new features. You are highly encouraged to submit your changes as a
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* Github PR or by email to the dev@nmap.org mailing list for possible
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* incorporation into the main distribution. Unless you specify otherwise, it
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* is understood that you are offering us very broad rights to use your
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* submissions as described in the Nmap Public Source License Contributor
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* Agreement. This is important because we fund the project by selling licenses
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* with various terms, and also because the inability to relicense code has
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* caused devastating problems for other Free Software projects (such as KDE
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* and NASM).
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*
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* The free version of Nmap is distributed in the hope that it will be
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* useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Warranties,
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* indemnification and commercial support are all available through the
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* Npcap OEM program--see https://nmap.org/oem/
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*
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***************************************************************************/
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#include "NpingTarget.h"
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#ifndef UTILS_NET_H
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#define UTILS_NET_H 1
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#ifndef NETINET_IN_SYSTM_H /* This guarding is needed for at least some versions of OpenBSD */
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#include <netinet/in_systm.h> /* defines n_long needed for netinet/ip.h */
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#define NETINET_IN_SYSTM_H
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#endif
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#ifndef NETINET_IP_H /* This guarding is needed for at least some versions of OpenBSD */
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#include <netinet/ip.h>
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#define NETINET_IP_H
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#endif
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int atoIP(const char *hostname, struct in_addr *dst);
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int atoIP(const char *hostname, struct sockaddr_storage *ss, int family);
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char *IPtoa(u32 i);
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char *IPtoa(struct sockaddr_storage *ss);
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char *IPtoa(struct in_addr addr);
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char *IPtoa(struct in6_addr addr);
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char *IPtoa(struct sockaddr_storage ss);
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char *IPtoa(struct sockaddr_storage *ss, int family);
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char *IPtoa(u8 *ipv6addr);
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u16 sockaddr2port(struct sockaddr_storage *ss);
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u16 sockaddr2port(struct sockaddr_storage ss);
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u16 sockaddr2port(struct sockaddr_in *s4);
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u16 sockaddr2port(struct sockaddr_in6 *s6);
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int setsockaddrfamily(struct sockaddr_storage *ss, int family);
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int setsockaddrany(struct sockaddr_storage *ss);
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bool isICMPType(u8 type);
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bool isICMPCode(u8 code);
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bool isICMPCode(u8 code, u8 type);
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int getPacketStrInfo(const char *proto, const u8 *packet, u32 len, u8 *dstbuff, u32 dstlen, struct sockaddr_storage *ss_src, struct sockaddr_storage *ss_dst);
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int getPacketStrInfo(const char *proto, const u8 *packet, u32 len, u8 *dstbuff, u32 dstlen);
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int getNetworkInterfaceName(u32 destination, char *dev);
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int getNetworkInterfaceName(struct sockaddr_storage *dst, char *dev);
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int nping_getpts_simple(const char *origexpr, u16 **list, int *count);
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int resolveCached(char *host, struct sockaddr_storage *ss, size_t *sslen,int pf) ;
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struct hostent *gethostbynameCached(char *host);
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struct hostent *hostentcpy(struct hostent *src);
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int hostentfree(struct hostent *src);
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int parseMAC(const char *txt, u8 *targetbuff);
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char *MACtoa(u8 *mac);
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const char *arppackethdrinfo(const u8 *packet, u32 len, int detail );
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int arppackethdrinfo(const u8 *packet, u32 len, u8 *dstbuff, u32 dstlen);
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int tcppackethdrinfo(const u8 *packet, size_t len, u8 *dstbuff, size_t dstlen, int detail, struct sockaddr_storage *src, struct sockaddr_storage *dst);
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int udppackethdrinfo(const u8 *packet, size_t len, u8 *dstbuff, size_t dstlen, int detail, struct sockaddr_storage *src, struct sockaddr_storage *dst);
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const char *getRandomTextPayload();
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int send_packet(NpingTarget *target, int rawfd, u8 *pkt, size_t pktLen);
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int print_dnet_interface(const struct intf_entry *entry, void *arg) ;
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int print_interfaces_dnet();
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struct sockaddr_storage *getSrcSockAddrFromIPPacket(u8 *pkt, size_t pktLen);
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u8 *getUDPheaderLocation(u8 *pkt, size_t pktLen);
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u8 *getTCPheaderLocation(u8 *pkt, size_t pktLen);
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u8 getProtoFromIPPacket(u8 *pkt, size_t pktLen);
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u16 *getSrcPortFromIPPacket(u8 *pkt, size_t pktLen);
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u16 *getDstPortFromIPPacket(u8 *pkt, size_t pktLen);
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u16 *getDstPortFromTCPHeader(u8 *pkt, size_t pktLen);
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u16 *getDstPortFromUDPHeader(u8 *pkt, size_t pktLen);
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int obtainRawSocket();
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#define DEVNAMELEN 16
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#define PATH_PROC_IFINET6 "/proc/net/if_inet6"
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typedef struct ipv6_interface{
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char devname[DEVNAMELEN]; /* Interface name */
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struct sockaddr_storage ss; /* Address as a sockaddr_storage var */
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u8 addr[16]; /* Address as a 128bit array */
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u16 netmask_bits; /* Prefix length */
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u8 dev_no; /* Netlink device number */
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u8 scope; /* Scope */
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u8 flags; /* Interface flags */
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u8 mac[6]; /* MAC addr. (I wish we could get it)*/
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}if6_t;
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int getinterfaces_inet6_linux(if6_t *ifbuf, int max_ifaces);
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#define PATH_PROC_IPV6ROUTE "/proc/net/ipv6_route"
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typedef struct sys_route6 {
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struct in6_addr dst_net; /* Destination Network */
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u8 dst_prefix; /* Destination Prefix Length */
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struct in6_addr src_net; /* Source Network */
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u8 src_prefix; /* Source Prefix Length */
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struct in6_addr next_hop; /* Gateway - 0 if none */
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u32 metric; /* Metric */
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u32 ref_count; /* Reference Counter */
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u32 use_count; /* Use Counter */
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u32 flags; /* Flags */
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char devname[DEVNAMELEN]; /* Device name */
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}route6_t;
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int getroutes_inet6_linux(route6_t *rtbuf, int max_routes);
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route6_t *route_dst_ipv6_linux(const struct sockaddr_storage *const dst);
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#endif /* UTILS_NET_H */
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