/*************************************************************************** * utils_net.cc -- Miscellaneous network-related functions that perform * * various tasks. * * * ***********************IMPORTANT NMAP LICENSE TERMS************************ * * The Nmap Security Scanner is (C) 1996-2024 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/ * ***************************************************************************/ #include "NpingTarget.h" #ifndef UTILS_NET_H #define UTILS_NET_H 1 #ifndef NETINET_IN_SYSTM_H /* This guarding is needed for at least some versions of OpenBSD */ #include /* defines n_long needed for netinet/ip.h */ #define NETINET_IN_SYSTM_H #endif #ifndef NETINET_IP_H /* This guarding is needed for at least some versions of OpenBSD */ #include #define NETINET_IP_H #endif int atoIP(const char *hostname, struct in_addr *dst); int atoIP(const char *hostname, struct sockaddr_storage *ss, int family); char *IPtoa(u32 i); char *IPtoa(struct sockaddr_storage *ss); char *IPtoa(struct in_addr addr); char *IPtoa(struct in6_addr addr); char *IPtoa(struct sockaddr_storage ss); char *IPtoa(struct sockaddr_storage *ss, int family); char *IPtoa(u8 *ipv6addr); u16 sockaddr2port(struct sockaddr_storage *ss); u16 sockaddr2port(struct sockaddr_storage ss); u16 sockaddr2port(struct sockaddr_in *s4); u16 sockaddr2port(struct sockaddr_in6 *s6); int setsockaddrfamily(struct sockaddr_storage *ss, int family); int setsockaddrany(struct sockaddr_storage *ss); bool isICMPType(u8 type); bool isICMPCode(u8 code); bool isICMPCode(u8 code, u8 type); int getPacketStrInfo(const char *proto, const u8 *packet, u32 len, u8 *dstbuff, u32 dstlen, struct sockaddr_storage *ss_src, struct sockaddr_storage *ss_dst); int getPacketStrInfo(const char *proto, const u8 *packet, u32 len, u8 *dstbuff, u32 dstlen); int getNetworkInterfaceName(u32 destination, char *dev); int getNetworkInterfaceName(struct sockaddr_storage *dst, char *dev); int nping_getpts_simple(const char *origexpr, u16 **list, int *count); int resolveCached(char *host, struct sockaddr_storage *ss, size_t *sslen,int pf) ; struct hostent *gethostbynameCached(char *host); struct hostent *hostentcpy(struct hostent *src); int hostentfree(struct hostent *src); int parseMAC(const char *txt, u8 *targetbuff); char *MACtoa(u8 *mac); const char *arppackethdrinfo(const u8 *packet, u32 len, int detail ); int arppackethdrinfo(const u8 *packet, u32 len, u8 *dstbuff, u32 dstlen); int tcppackethdrinfo(const u8 *packet, size_t len, u8 *dstbuff, size_t dstlen, int detail, struct sockaddr_storage *src, struct sockaddr_storage *dst); int udppackethdrinfo(const u8 *packet, size_t len, u8 *dstbuff, size_t dstlen, int detail, struct sockaddr_storage *src, struct sockaddr_storage *dst); const char *getRandomTextPayload(); int send_packet(NpingTarget *target, int rawfd, u8 *pkt, size_t pktLen); int print_dnet_interface(const struct intf_entry *entry, void *arg) ; int print_interfaces_dnet(); struct sockaddr_storage *getSrcSockAddrFromIPPacket(u8 *pkt, size_t pktLen); u8 *getUDPheaderLocation(u8 *pkt, size_t pktLen); u8 *getTCPheaderLocation(u8 *pkt, size_t pktLen); u8 getProtoFromIPPacket(u8 *pkt, size_t pktLen); u16 *getSrcPortFromIPPacket(u8 *pkt, size_t pktLen); u16 *getDstPortFromIPPacket(u8 *pkt, size_t pktLen); u16 *getDstPortFromTCPHeader(u8 *pkt, size_t pktLen); u16 *getDstPortFromUDPHeader(u8 *pkt, size_t pktLen); int obtainRawSocket(); #define DEVNAMELEN 16 #define PATH_PROC_IFINET6 "/proc/net/if_inet6" typedef struct ipv6_interface{ char devname[DEVNAMELEN]; /* Interface name */ struct sockaddr_storage ss; /* Address as a sockaddr_storage var */ u8 addr[16]; /* Address as a 128bit array */ u16 netmask_bits; /* Prefix length */ u8 dev_no; /* Netlink device number */ u8 scope; /* Scope */ u8 flags; /* Interface flags */ u8 mac[6]; /* MAC addr. (I wish we could get it)*/ }if6_t; int getinterfaces_inet6_linux(if6_t *ifbuf, int max_ifaces); #define PATH_PROC_IPV6ROUTE "/proc/net/ipv6_route" typedef struct sys_route6 { struct in6_addr dst_net; /* Destination Network */ u8 dst_prefix; /* Destination Prefix Length */ struct in6_addr src_net; /* Source Network */ u8 src_prefix; /* Source Prefix Length */ struct in6_addr next_hop; /* Gateway - 0 if none */ u32 metric; /* Metric */ u32 ref_count; /* Reference Counter */ u32 use_count; /* Use Counter */ u32 flags; /* Flags */ char devname[DEVNAMELEN]; /* Device name */ }route6_t; int getroutes_inet6_linux(route6_t *rtbuf, int max_routes); route6_t *route_dst_ipv6_linux(const struct sockaddr_storage *const dst); #endif /* UTILS_NET_H */