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/***************************************************************************
* NewTargets.h -- The "NewTargets" class allows NSE scripts to add new *
* targets to the scan queue. *
***********************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/
*
***************************************************************************/
/* $Id$ */
#include "NewTargets.h"
#include "NmapOps.h"
#include "output.h"
#include "nmap_error.h"
extern NmapOps o; /* option structure */
NewTargets *NewTargets::new_targets = NULL;
void NewTargets::free_new_targets (void) {
delete new_targets;
}
/* This private method is used to push new targets to the
* queue. It returns the number of targets in the queue. */
unsigned long NewTargets::push (const char *target) {
std::pair<std::set<std::string>::iterator, bool> pair_iter;
std::string tg(target);
if (tg.length() > 0) {
/* save targets in the scanned history here (NSE side). */
pair_iter = history.insert(tg);
/* A new target */
if (pair_iter.second == true) {
/* push target onto the queue for future scans */
queue.push(tg);
if (o.debugging > 2)
log_write(LOG_PLAIN, "New Targets: target %s pushed onto the queue.\n", tg.c_str());
} else {
if (o.debugging > 2)
log_write(LOG_PLAIN, "New Targets: target %s was already added.\n", tg.c_str());
/* Return 1 when the target is already in the history cache,
* this will prevent returning 0 when the target queue is
* empty since no target was added. */
return 1;
}
}
return queue.size();
}
/* Reads a target from the queue and return it to be pushed
* onto Nmap scan queue */
std::string NewTargets::read (void) {
std::string str;
new_targets = new_targets ? new_targets : new NewTargets();
/* check to see it there are targets in the queue */
if (!new_targets->queue.empty()) {
str = new_targets->queue.front();
new_targets->queue.pop();
}
return str;
}
unsigned long NewTargets::get_number (void) {
new_targets = new_targets ? new_targets : new NewTargets();
return new_targets->history.size();
}
unsigned long NewTargets::get_queued (void) {
new_targets = new_targets ? new_targets : new NewTargets();
return new_targets->queue.size();
}
/* This is the function that is used by nse_nmaplib.cc to add
* new targets.
* Returns the number of targets in the queue on success, or 0 on
* failures or when the queue is empty. */
unsigned long NewTargets::insert (const char *target) {
new_targets = new_targets ? new_targets : new NewTargets();
if (*target) {
if (o.current_scantype == SCRIPT_POST_SCAN) {
error("ERROR: adding targets is disabled in the Post-scanning phase.");
return 0;
}
if (strlen(target) >= 1024) {
error("ERROR: new target is too long (>= 1024), failed to add it.");
return 0;
}
}
return new_targets->push(target);
}
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