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/***************************************************************************
* portreasons.h -- Verbose packet-level information on port states *
* *
***********************IMPORTANT NMAP LICENSE TERMS************************
*
* The Nmap Security Scanner is (C) 1996-2023 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/
*
***************************************************************************/
/*
* Written by Eddie Bell <ejlbell@gmail.com> 2007
* Modified by Colin Rice <dah4k0r@gmail.com> 2011
*/
#ifndef REASON_H
#define REASON_H
#include "nbase.h"
#include <sys/types.h>
#include <map>
class Target;
class PortList;
typedef unsigned short reason_t;
/* Holds various string outputs of a reason *
* Stored inside a map which maps enum_codes *
* to reason_strings */
class reason_string {
public:
//Required for map
reason_string();
reason_string(const char * singular, const char * plural);
const char * singular;
const char * plural;
};
/* stored inside a Port Object and describes
* why a port is in a specific state */
typedef struct port_reason {
reason_t reason_id;
union {
struct sockaddr_in in;
struct sockaddr_in6 in6;
struct sockaddr sockaddr;
} ip_addr;
unsigned short ttl;
int set_ip_addr(const struct sockaddr_storage *ss);
} state_reason_t;
/* used to calculate state reason summaries.
* I.E 10 ports filter because of 10 no-responses */
typedef struct port_reason_summary {
reason_t reason_id;
unsigned int count;
struct port_reason_summary *next;
unsigned short proto;
unsigned short ports[0xffff+1];
} state_reason_summary_t;
enum reason_codes {
ER_RESETPEER, ER_CONREFUSED, ER_CONACCEPT,
ER_SYNACK, ER_SYN, ER_UDPRESPONSE, ER_PROTORESPONSE, ER_ACCES,
ER_NETUNREACH, ER_HOSTUNREACH, ER_PROTOUNREACH,
ER_PORTUNREACH, ER_ECHOREPLY,
ER_DESTUNREACH, ER_SOURCEQUENCH, ER_NETPROHIBITED,
ER_HOSTPROHIBITED, ER_ADMINPROHIBITED,
ER_TIMEEXCEEDED, ER_TIMESTAMPREPLY,
ER_ADDRESSMASKREPLY, ER_NOIPIDCHANGE, ER_IPIDCHANGE,
ER_ARPRESPONSE, ER_NDRESPONSE, ER_TCPRESPONSE, ER_NORESPONSE,
ER_INITACK, ER_ABORT,
ER_LOCALHOST, ER_SCRIPT, ER_UNKNOWN, ER_USER,
ER_NOROUTE, ER_BEYONDSCOPE, ER_REJECTROUTE, ER_PARAMPROBLEM,
};
/* A map of reason_codes to plural and singular *
* versions of the error string */
class reason_map_type{
private:
std::map<reason_codes,reason_string > reason_map;
public:
reason_map_type();
std::map<reason_codes,reason_string>::const_iterator find(const reason_codes& x) const {
std::map<reason_codes,reason_string>::const_iterator itr = reason_map.find(x);
if(itr == reason_map.end())
return reason_map.find(ER_UNKNOWN);
return itr;
};
};
/* Function to translate ICMP code and typ to reason code */
reason_codes icmp_to_reason(u8 proto, int icmp_type, int icmp_code);
/* Passed to reason_str to determine if string should be in
* plural of singular form */
#define SINGULAR 1
#define PLURAL 2
void state_reason_init(state_reason_t *reason);
/* converts a reason_id to a string. number represents the
* amount ports in a given state. If there is more then one
* port the plural is used, otherwise the singular is used. */
const char *reason_str(reason_t reason_id, unsigned int number);
/* Returns a linked list of reasons why ports are in a given state */
state_reason_summary_t *get_state_reason_summary(const PortList *Ports, int state);
/* Frees the linked list from get_state_reason_summary */
void state_reason_summary_dinit(state_reason_summary_t *r);
/* Build an output string based on reason and source ip address.
* Uses static return value so previous values will be over
* written by subsequent calls */
const char *port_reason_str(state_reason_t r);
const char *target_reason_str(const Target *t);
#endif
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