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187 lines
12 KiB
C
187 lines
12 KiB
C
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/***************************************************************************
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* utils_net.cc -- Miscellanious 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) 1996-2012 Insecure.Com LLC. Nmap is *
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* also a registered trademark of Insecure.Com LLC. This program is free *
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* software; you may redistribute and/or modify it under the terms of the *
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* GNU General Public License as published by the Free Software *
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* Foundation; Version 2 with the clarifications and exceptions described *
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* below. This guarantees your right to use, modify, and redistribute *
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* this software under certain conditions. If you wish to embed Nmap *
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* technology into proprietary software, we sell alternative licenses *
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* (contact sales@insecure.com). Dozens of software vendors already *
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* license Nmap technology such as host discovery, port scanning, OS *
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* detection, version detection, and the Nmap Scripting Engine. *
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* *
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* Note that the GPL places important restrictions on "derived works", yet *
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* it does not provide a detailed definition of that term. To avoid *
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* misunderstandings, we interpret that term as broadly as copyright law *
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* allows. For example, we consider an application to constitute a *
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* "derivative work" for the purpose of this license if it does any of the *
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* following: *
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* o Integrates source code from Nmap *
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* o Reads or includes Nmap copyrighted data files, such as *
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* nmap-os-db or nmap-service-probes. *
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* o Executes Nmap and parses the results (as opposed to typical shell or *
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* execution-menu apps, which simply display raw Nmap output and so are *
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* not derivative works.) *
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* o Integrates/includes/aggregates Nmap into a proprietary executable *
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* installer, such as those produced by InstallShield. *
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* o Links to a library or executes a program that does any of the above *
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* *
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* The term "Nmap" should be taken to also include any portions or derived *
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* works of Nmap, as well as other software we distribute under this *
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* license such as Zenmap, Ncat, and Nping. This list is not exclusive, *
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* but is meant to clarify our interpretation of derived works with some *
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* common examples. Our interpretation applies only to Nmap--we don't *
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* speak for other people's GPL works. *
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* *
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* If you have any questions about the GPL licensing restrictions on using *
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* Nmap in non-GPL works, we would be happy to help. As mentioned above, *
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* we also offer alternative license to integrate Nmap into proprietary *
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* applications and appliances. These contracts have been sold to dozens *
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* of software vendors, and generally include a perpetual license as well *
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* as providing for priority support and updates. They also fund the *
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* continued development of Nmap. Please email sales@insecure.com for *
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* further information. *
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* *
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* As a special exception to the GPL terms, Insecure.Com LLC grants *
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* permission to link the code of this program with any version of the *
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* OpenSSL library which is distributed under a license identical to that *
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* listed in the included docs/licenses/OpenSSL.txt file, and distribute *
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* linked combinations including the two. You must obey the GNU GPL in all *
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* respects for all of the code used other than OpenSSL. If you modify *
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* this file, you may extend this exception to your version of the file, *
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* but you are not obligated to do so. *
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* *
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* If you received these files with a written license agreement or *
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* contract stating terms other than the terms above, then that *
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* alternative license agreement takes precedence over these comments. *
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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 (none *
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* have been found so far). *
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* *
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* Source code also allows you to port Nmap to new platforms, fix bugs, *
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* and add new features. You are highly encouraged to send your changes *
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* to the dev@nmap.org mailing list for possible incorporation into the *
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* main distribution. By sending these changes to Fyodor or one of the *
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* Insecure.Org development mailing lists, or checking them into the Nmap *
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* source code repository, it is understood (unless you specify otherwise) *
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* that you are offering the Nmap Project (Insecure.Com LLC) the *
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* unlimited, non-exclusive right to reuse, modify, and relicense the *
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* code. Nmap will always be available Open Source, but this is important *
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* because the inability to relicense code has caused devastating problems *
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* for other Free Software projects (such as KDE and NASM). We also *
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* occasionally relicense the code to third parties as discussed above. *
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* If you wish to specify special license conditions of your *
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* contributions, just say so when you send them. *
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* *
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* This program is distributed in the hope that it will be useful, but *
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* WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the Nmap *
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* license file for more details (it's in a COPYING file included with *
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* Nmap, and also available from https://svn.nmap.org/nmap/COPYING *
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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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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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struct sockaddr_storage *getDestAddrFromICMPPacket(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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