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e1fba2d663
This is a refactoring of target parsing that stores different types of target specifications as different classes. The eventual intention is to allow easy iteration over each specification for the purpose of IPv6 multicast host discovery.
195 lines
10 KiB
C++
195 lines
10 KiB
C++
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/***************************************************************************
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* targets.h -- Functions relating to "ping scanning" as well as *
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* determining the exact IPs to hit based on CIDR and other input formats. *
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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 TARGETS_H
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#define TARGETS_H
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#ifdef HAVE_CONFIG_H
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#include "nmap_config.h"
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#else
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#ifdef WIN32
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#include "nmap_winconfig.h"
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#endif /* WIN32 */
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#endif /* HAVE_CONFIG_H */
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/* This contains pretty much everything we need ... */
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#if HAVE_SYS_TIME_H
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#include <sys/time.h>
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#endif
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#if HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#ifdef HAVE_SYS_PARAM_H
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#include <sys/param.h> /* Defines MAXHOSTNAMELEN on BSD*/
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#endif
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#include "nmap.h"
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#include "global_structures.h"
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#include "TargetGroup.h"
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class TargetGroup {
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public:
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NetBlock *netblock;
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struct sockaddr_storage pushback;
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TargetGroup() {
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this->netblock = NULL;
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this->pushback.ss_family = AF_UNSPEC;
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}
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~TargetGroup() {
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if (this->netblock != NULL)
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delete this->netblock;
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}
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/* Initializes (or reinitializes) the object with a new expression,
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such as 192.168.0.0/16 , 10.1.0-5.1-254 , or
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fe80::202:e3ff:fe14:1102 . The af parameter is AF_INET or
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AF_INET6 Returns 0 for success */
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int parse_expr(const char *target_expr, int af);
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/* Grab the next host from this expression (if any). Returns 0 and
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fills in ss if successful. ss must point to a pre-allocated
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sockaddr_storage structure */
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int get_next_host(struct sockaddr_storage *ss, size_t *sslen);
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/* Returns the given host, so that it will be given the next time
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get_next_host is called. Does nothing if ss is NULL. */
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void return_host(const struct sockaddr_storage *ss);
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/* Returns true iff the given address is the one that was resolved to create
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this target group; i.e., not one of the addresses derived from it with a
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netmask. */
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bool is_resolved_address(const struct sockaddr_storage *ss) const;
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/* Return a string of the name or address that was resolved for this group. */
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const char *get_resolved_name(void) const;
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/* Return the list of addresses that the name for this group resolved to, if
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it came from a name resolution. */
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const std::list<struct sockaddr_storage> &get_resolved_addrs(void) const;
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/* is the current expression a named host */
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int get_namedhost() const;
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};
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class HostGroupState {
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public:
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HostGroupState(int lookahead, int randomize, int argc, const char *argv[]);
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~HostGroupState();
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Target **hostbatch;
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int argc;
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const char **argv;
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int max_batch_sz; /* The size of the hostbatch[] array */
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int current_batch_sz; /* The number of VALID members of hostbatch[] */
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int next_batch_no; /* The index of the next hostbatch[] member to be given
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back to the user */
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int randomize; /* Whether each batch should be "shuffled" prior to the ping
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scan (they will also be out of order when given back one
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at a time to the client program */
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TargetGroup current_group; /* For batch chunking -- targets in queue */
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const char *next_expression();
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};
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/* Ports is the list of ports the user asked to be scanned (0 terminated),
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you can just pass NULL (it is only a stupid optimization that needs it) */
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Target *nexthost(HostGroupState *hs,const addrset *exclude_group,
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struct scan_lists *ports, int pingtype);
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int load_exclude_file(addrset *exclude_group, FILE *fp);
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int load_exclude_string(addrset *exclude_group, const char *s);
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/* a debugging routine to dump an exclude list to stdout. */
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int dumpExclude(addrset *exclude_group);
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/* Returns the last host obtained by nexthost. It will be given again the next
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time you call nexthost(). */
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void returnhost(HostGroupState *hs);
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#endif /* TARGETS_H */
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