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Diffstat (limited to 'portreasons.h')
| -rw-r--r-- | portreasons.h | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/portreasons.h b/portreasons.h new file mode 100644 index 0000000..0929d83 --- /dev/null +++ b/portreasons.h @@ -0,0 +1,173 @@ +/*************************************************************************** + * 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 + |