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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) 1996-2022 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: NewTargets.cc 38395 2022-06-27 23:01:44Z dmiller $ */
#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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