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249c566196
This matters on OS X; with the wrong size, connect scans give "Invalid argument". Reported by Jesper Kückelhahn. http://seclists.org/nmap-dev/2013/q1/84
222 lines
10 KiB
C++
222 lines
10 KiB
C++
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/***************************************************************************
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* TargetGroup.h -- The "TargetGroup" class holds a group of IP addresses, *
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* such as those from a '/16' or '10.*.*.*' specification. It also has a *
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* trivial HostGroupState class which handles a bunch of expressions that *
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* go into TargetGroup classes. *
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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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/* $Id$ */
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#ifndef TARGETGROUP_H
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#define TARGETGROUP_H
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#include <limits.h>
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#include <list>
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#include <queue>
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#include <set>
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#include <string>
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#include "nmap.h"
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/* We use bit vectors to represent what values are allowed in an IPv4 octet.
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Each vector is built up of an array of bitvector_t (any convenient integer
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type). */
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typedef unsigned long bitvector_t;
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/* A 256-element bit vector, representing legal values for one octet. */
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typedef bitvector_t octet_bitvector[(256 - 1) / (sizeof(unsigned long) * CHAR_BIT) + 1];
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class NetBlock {
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public:
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virtual ~NetBlock() {}
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std::string hostname;
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std::list<struct sockaddr_storage> resolvedaddrs;
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/* Parses an expression such as 192.168.0.0/16, 10.1.0-5.1-254, or
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fe80::202:e3ff:fe14:1102/112 and returns a newly allocated NetBlock. The af
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parameter is AF_INET or AF_INET6. Returns NULL in case of error. */
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static NetBlock *parse_expr(const char *target_expr, int af);
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bool is_resolved_address(const struct sockaddr_storage *ss) const;
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virtual bool next(struct sockaddr_storage *ss, size_t *sslen) = 0;
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virtual void apply_netmask(int bits) = 0;
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virtual std::string str() const = 0;
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};
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class NetBlockIPv4Ranges : public NetBlock {
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public:
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octet_bitvector octets[4];
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NetBlockIPv4Ranges();
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bool next(struct sockaddr_storage *ss, size_t *sslen);
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void apply_netmask(int bits);
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std::string str() const;
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private:
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unsigned int counter[4];
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};
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class NetBlockIPv6Netmask : public NetBlock {
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public:
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void set_addr(const struct sockaddr_in6 *addr);
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bool next(struct sockaddr_storage *ss, size_t *sslen);
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void apply_netmask(int bits);
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std::string str() const;
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private:
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bool exhausted;
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struct sockaddr_in6 addr;
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struct in6_addr start;
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struct in6_addr cur;
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struct in6_addr end;
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};
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class NetBlockHostname : public NetBlock {
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public:
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NetBlockHostname(const char *hostname, int af);
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int af;
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int bits;
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NetBlock *resolve() const;
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bool next(struct sockaddr_storage *ss, size_t *sslen);
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void apply_netmask(int bits);
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std::string str() const;
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};
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/* Adding new targets is for NSE scripts */
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class NewTargets {
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public:
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NewTargets();
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/* return a previous inserted target */
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static std::string read (void);
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/* clear the scanned_targets_cache */
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static void clear (void);
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/* get the number of all new added targets */
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static unsigned long get_number (void);
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/* get the number that have been scanned */
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static unsigned long get_scanned (void);
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/* get the number of queued targets left to scan */
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static unsigned long get_queued (void);
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/* get the new_targets object */
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static NewTargets *get (void);
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/* insert targets to the new_targets_queue */
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static unsigned long insert (const char *target);
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private:
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/* unsigned long mex_new_targets; */
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/* A queue to push new targets that were discovered by NSE scripts.
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* Nmap will pop future targets from this queue. */
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std::queue<std::string> queue;
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/* A cache to save scanned targets specifiactions.
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* (These are targets that were pushed to Nmap scan queue) */
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std::set<std::string> history;
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void Initialize();
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/* Save new targets onto the queue */
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unsigned long push (const char *target);
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protected:
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static NewTargets *new_targets;
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};
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#endif /* TARGETGROUP_H */
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