mirror of
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d4e49f1075
avoiding warning about symbol redefinitions. This is mostly moving "nmap.h" to the top of the list.
308 lines
12 KiB
C++
308 lines
12 KiB
C++
/***************************************************************************
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* nmap_tty.cc -- Handles runtime interaction with Nmap, so you can *
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* increase verbosity/debugging or obtain a status line upon request. *
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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) 1996-2010 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, and version detection. *
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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 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. This list is not exclusive, but is meant to clarify our *
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* interpretation of derived works with some common examples. Our *
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* interpretation applies only to Nmap--we don't speak for other people's *
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* 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 as well as helping to *
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* fund the continued development of Nmap technology. Please email *
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* sales@insecure.com for 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 nmap-dev@insecure.org for possible incorporation into the main *
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* distribution. By sending these changes to Fyodor or one of the *
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* Insecure.Org development mailing lists, it is assumed that you are *
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* offering the Nmap Project (Insecure.Com LLC) the unlimited, *
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* non-exclusive right to reuse, modify, and relicense the code. Nmap *
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* will always be available Open Source, but this is important because the *
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* inability to relicense code has caused devastating problems for other *
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* Free Software projects (such as KDE and NASM). We also occasionally *
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* relicense the code to third parties as discussed above. If you wish to *
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* specify special license conditions of your contributions, just say so *
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* 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 GNU *
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* General Public License v2.0 for more details at *
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* http://www.gnu.org/licenses/gpl-2.0.html , or in the COPYING file *
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* included with Nmap. *
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* *
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***************************************************************************/
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#ifndef WIN32
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#include "nmap_config.h"
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#endif
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#include "nmap.h"
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#include <sys/types.h>
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#if HAVE_SYS_STAT_H
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#include <sys/stat.h>
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#endif
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#if HAVE_FCNTL_H
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#include <fcntl.h>
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#endif
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#if HAVE_TERMIOS_H
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#include <termios.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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#include <stdlib.h>
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#include "nmap_tty.h"
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#include "utils.h"
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#include "NmapOps.h"
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extern NmapOps o;
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#ifdef WIN32
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#include <conio.h>
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// Microsoft's runtime makes this fairly simple. :)
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void tty_init() { return; }
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static int tty_getchar() { return _kbhit() ? _getch() : -1; }
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static void tty_done() { return; }
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static void tty_flush(void)
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{
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static HANDLE stdinput = GetStdHandle(STD_INPUT_HANDLE);
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FlushConsoleInputBuffer(stdinput);
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}
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#else
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#if !defined(O_NONBLOCK) && defined(O_NDELAY)
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#define O_NONBLOCK O_NDELAY
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#endif
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#ifdef __CYGWIN32__
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#include <string.h>
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#include <sys/socket.h>
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#ifndef __CYGWIN__
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extern int tcgetattr(int fd, struct termios *termios_p);
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extern int tcsetattr(int fd, int actions, struct termios *termios_p);
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#endif
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#endif
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static int tty_fd = 0;
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static struct termios saved_ti;
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static int tty_getchar()
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{
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int c, numChars;
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#ifdef __CYGWIN32__
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fd_set set;
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struct timeval tv;
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#endif
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if (tty_fd && tcgetpgrp(tty_fd) == getpid()) {
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// This is so that when the terminal has been disconnected, it will be reconnected when possible. If it slows things down, just remove it
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// tty_init();
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#ifdef __CYGWIN32__
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FD_ZERO(&set); FD_SET(tty_fd, &set);
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tv.tv_sec = 0; tv.tv_usec = 0;
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if (select(tty_fd + 1, &set, NULL, NULL, &tv) <= 0)
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return -1;
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#endif
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c = 0;
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numChars = read(tty_fd, &c, 1);
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if (numChars > 0) return c;
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}
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return -1;
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}
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static void tty_done()
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{
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if (!tty_fd) return;
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tcsetattr(tty_fd, TCSANOW, &saved_ti);
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close(tty_fd);
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tty_fd = 0;
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}
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static void tty_flush(void)
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{
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/* we don't need to test for tty_fd==0 here because
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* this isn't called unless we succeeded
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*/
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tcflush(tty_fd, TCIFLUSH);
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}
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/*
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* Initializes the terminal for unbuffered non-blocking input. Also
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* registers tty_done() via atexit(). You need to call this before
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* you ever call keyWasPressed().
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*/
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void tty_init()
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{
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struct termios ti;
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if(o.noninteractive)
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return;
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if (tty_fd)
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return;
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if ((tty_fd = open("/dev/tty", O_RDONLY | O_NONBLOCK)) < 0) return;
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#ifndef __CYGWIN32__
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if (tcgetpgrp(tty_fd) != getpid()) {
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close(tty_fd); return;
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}
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#endif
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tcgetattr(tty_fd, &ti);
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saved_ti = ti;
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ti.c_lflag &= ~(ICANON | ECHO);
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ti.c_cc[VMIN] = 1;
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ti.c_cc[VTIME] = 0;
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tcsetattr(tty_fd, TCSANOW, &ti);
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atexit(tty_done);
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}
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#endif //!win32
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/* Catches all of the predefined
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keypresses and interpret them, and it will also tell you if you
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should print anything. A value of true being returned means a
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nonstandard key has been pressed and the calling method should
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print a status message */
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bool keyWasPressed()
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{
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/* Where we keep the automatic stats printing schedule. */
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static struct timeval stats_time = { 0 };
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int c;
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if (o.noninteractive)
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return false;
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if ((c = tty_getchar()) >= 0) {
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tty_flush(); /* flush input queue */
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// printf("You pressed key '%c'!\n", c);
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if (c == 'v') {
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o.verbose++;
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log_write(LOG_STDOUT, "Verbosity Increased to %d.\n", o.verbose);
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} else if (c == 'V') {
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if (o.verbose > 0)
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o.verbose--;
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log_write(LOG_STDOUT, "Verbosity Decreased to %d.\n", o.verbose);
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} else if (c == 'd') {
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o.debugging++;
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log_write(LOG_STDOUT, "Debugging Increased to %d.\n", o.debugging);
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} else if (c == 'D') {
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if (o.debugging > 0) o.debugging--;
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log_write(LOG_STDOUT, "Debugging Decreased to %d.\n", o.debugging);
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} else if (c == 'p') {
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o.setPacketTrace(true);
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log_write(LOG_STDOUT, "Packet Tracing enabled.\n");
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} else if (c == 'P') {
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o.setPacketTrace(false);
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log_write(LOG_STDOUT, "Packet Tracing disabled.\n");
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} else if (c == '?') {
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log_write(LOG_STDOUT,
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"Interactive keyboard commands:\n"
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"? Display this information\n"
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"v/V Increase/decrease verbosity\n"
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"d/D Increase/decrease debugging\n"
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"p/P Enable/disable packet tracing\n"
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"anything else Print status\n"
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"More help: http://nmap.org/book/man-runtime-interaction.html\n");
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} else {
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printStatusMessage();
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return true;
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}
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}
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/* Check if we need to print a status update according to the --stats-every
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option. */
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if (o.stats_interval != 0.0) {
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struct timeval now;
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gettimeofday(&now, NULL);
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if (stats_time.tv_sec == 0) {
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/* Initialize the scheduled stats time. */
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stats_time = *o.getStartTime();
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TIMEVAL_ADD(stats_time, stats_time, (time_t) (o.stats_interval * 1000000));
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}
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if (TIMEVAL_AFTER(now, stats_time)) {
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/* Advance to the next print time. */
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TIMEVAL_ADD(stats_time, stats_time, (time_t) (o.stats_interval * 1000000));
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/* If it's still in the past, catch it up to the present. */
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if (TIMEVAL_AFTER(now, stats_time))
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stats_time = now;
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printStatusMessage();
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/* Instruct the caller to print status too. */
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return true;
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}
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}
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return false;
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}
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