/***************************************************************************
* utils_net.cc -- Miscellaneous network-related functions that perform *
* various tasks. *
* *
***********************IMPORTANT NMAP LICENSE TERMS************************
* *
* The Nmap Security Scanner is (C) 1996-2018 Insecure.Com LLC ("The Nmap *
* Project"). Nmap is also a registered trademark of the Nmap Project. *
* This program is free software; you may redistribute and/or modify it *
* under the terms of the GNU General Public License as published by the *
* Free Software Foundation; Version 2 ("GPL"), BUT ONLY WITH ALL OF THE *
* CLARIFICATIONS AND EXCEPTIONS DESCRIBED HEREIN. This guarantees your *
* right to use, modify, and redistribute this software under certain *
* conditions. If you wish to embed Nmap technology into proprietary *
* software, we sell alternative licenses (contact sales@nmap.com). *
* Dozens of software vendors already license Nmap technology such as *
* host discovery, port scanning, OS detection, version detection, and *
* the Nmap Scripting Engine. *
* *
* Note that the GPL places important restrictions on "derivative works", *
* yet it does not provide a detailed definition of that term. To avoid *
* misunderstandings, we interpret that term as broadly as copyright law *
* allows. For example, we consider an application to constitute a *
* derivative work for the purpose of this license if it does any of the *
* following with any software or content covered by this license *
* ("Covered Software"): *
* *
* o Integrates source code from Covered Software. *
* *
* o Reads or includes copyrighted data files, such as Nmap's nmap-os-db *
* or nmap-service-probes. *
* *
* o Is designed specifically to execute Covered Software and parse the *
* results (as opposed to typical shell or execution-menu apps, which will *
* execute anything you tell them to). *
* *
* o Includes Covered Software in a proprietary executable installer. The *
* installers produced by InstallShield are an example of this. Including *
* Nmap with other software in compressed or archival form does not *
* trigger this provision, provided appropriate open source decompression *
* or de-archiving software is widely available for no charge. For the *
* purposes of this license, an installer is considered to include Covered *
* Software even if it actually retrieves a copy of Covered Software from *
* another source during runtime (such as by downloading it from the *
* Internet). *
* *
* o Links (statically or dynamically) to a library which does any of the *
* above. *
* *
* o Executes a helper program, module, or script to do any of the above. *
* *
* This list is not exclusive, but is meant to clarify our interpretation *
* of derived works with some common examples. Other people may interpret *
* the plain GPL differently, so we consider this a special exception to *
* the GPL that we apply to Covered Software. Works which meet any of *
* these conditions must conform to all of the terms of this license, *
* particularly including the GPL Section 3 requirements of providing *
* source code and allowing free redistribution of the work as a whole. *
* *
* As another special exception to the GPL terms, the Nmap Project grants *
* permission to link the code of this program with any version of the *
* OpenSSL library which is distributed under a license identical to that *
* listed in the included docs/licenses/OpenSSL.txt file, and distribute *
* linked combinations including the two. *
* *
* The Nmap Project has permission to redistribute Npcap, a packet *
* capturing driver and library for the Microsoft Windows platform. *
* Npcap is a separate work with it's own license rather than this Nmap *
* license. Since the Npcap license does not permit redistribution *
* without special permission, our Nmap Windows binary packages which *
* contain Npcap may not be redistributed without special permission. *
* *
* Any redistribution of Covered Software, including any derived works, *
* must obey and carry forward all of the terms of this license, including *
* obeying all GPL rules and restrictions. For example, source code of *
* the whole work must be provided and free redistribution must be *
* allowed. All GPL references to "this License", are to be treated as *
* including the terms and conditions of this license text as well. *
* *
* Because this license imposes special exceptions to the GPL, Covered *
* Work may not be combined (even as part of a larger work) with plain GPL *
* software. The terms, conditions, and exceptions of this license must *
* be included as well. This license is incompatible with some other open *
* source licenses as well. In some cases we can relicense portions of *
* Nmap or grant special permissions to use it in other open source *
* software. Please contact fyodor@nmap.org with any such requests. *
* Similarly, we don't incorporate incompatible open source software into *
* Covered Software without special permission from the copyright holders. *
* *
* If you have any questions about the licensing restrictions on using *
* Nmap in other works, we are happy to help. As mentioned above, we also *
* offer an alternative license to integrate Nmap into proprietary *
* applications and appliances. These contracts have been sold to dozens *
* of software vendors, and generally include a perpetual license as well *
* as providing support and updates. They also fund the continued *
* development of Nmap. Please email sales@nmap.com for further *
* information. *
* *
* If you have received a written license agreement or contract for *
* Covered Software stating terms other than these, you may choose to use *
* and redistribute Covered Software under those terms instead of these. *
* *
* 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 send your changes *
* to the dev@nmap.org mailing list for possible incorporation into the *
* main distribution. By sending these changes to Fyodor or one of the *
* Insecure.Org development mailing lists, or checking them into the Nmap *
* source code repository, it is understood (unless you specify *
* otherwise) that you are offering the Nmap Project the unlimited, *
* non-exclusive right to reuse, modify, and relicense the code. Nmap *
* will always be available Open Source, but this is important because *
* the inability to relicense code has caused devastating problems for *
* other Free Software projects (such as KDE and NASM). We also *
* occasionally relicense the code to third parties as discussed above. *
* If you wish to specify special license conditions of your *
* contributions, just say so when you send them. *
* *
* This program 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. See the Nmap *
* license file for more details (it's in a COPYING file included with *
* Nmap, and also available from https://svn.nmap.org/nmap/COPYING) *
* *
***************************************************************************/
#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 <netinet/in_systm.h> /* 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 <netinet/ip.h>
#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 */