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c73b250615
device and exits. On Windows, print a hint about "net start npf" to start the NPF service.
225 lines
10 KiB
C++
225 lines
10 KiB
C++
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/***************************************************************************
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* nmap_error.cc -- Some simple error handling routines. *
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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) 1996-2009 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 COPYING.OpenSSL file, and distribute linked *
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* 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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/* $Id$ */
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#include "nmap_error.h"
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#include "output.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 <windows.h>
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#endif /* WIN32 */
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void fatal(const char *fmt, ...) {
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va_list ap;
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va_start(ap, fmt);
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log_vwrite(LOG_STDERR, fmt, ap);
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va_end(ap);
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if (o.log_errors) {
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va_start(ap, fmt);
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log_vwrite(LOG_NORMAL, fmt, ap);
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va_end(ap);
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}
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log_write(o.log_errors? LOG_NORMAL|LOG_STDERR : LOG_STDERR, "\nQUITTING!\n");
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exit(1);
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}
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void error(const char *fmt, ...) {
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va_list ap;
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va_start(ap, fmt);
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log_vwrite(LOG_STDERR, fmt, ap);
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va_end(ap);
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if (o.log_errors) {
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va_start(ap, fmt);
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log_vwrite(LOG_NORMAL, fmt, ap);
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va_end(ap);
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}
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log_write(o.log_errors? LOG_NORMAL|LOG_STDERR : LOG_STDERR, "\n");
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return;
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}
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void pfatal(const char *err, ...) {
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#ifdef WIN32
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int lasterror =0;
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char *errstr = NULL;
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#endif
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va_list ap;
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va_start(ap, err);
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log_vwrite(LOG_STDERR, err, ap);
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va_end(ap);
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if (o.log_errors) {
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va_start(ap, err);
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log_vwrite(LOG_NORMAL, err, ap);
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va_end(ap);
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}
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#ifdef WIN32
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lasterror = GetLastError();
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FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER|FORMAT_MESSAGE_FROM_SYSTEM,
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NULL, lasterror, MAKELANGID (LANG_NEUTRAL, SUBLANG_DEFAULT),
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(LPTSTR) &errstr, 0, NULL);
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log_write(o.log_errors? LOG_NORMAL|LOG_STDERR : LOG_STDERR, ": %s (%d)\n",
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errstr, lasterror);
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HeapFree(GetProcessHeap(), 0, errstr);
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#else
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log_write(o.log_errors? LOG_NORMAL|LOG_STDERR : LOG_STDERR, ": %s (%d)\n",
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strerror(errno), errno);
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#endif /* WIN32 perror() compatability switch */
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if (o.log_errors) log_flush(LOG_NORMAL);
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fflush(stderr);
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exit(1);
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}
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/* This function is the Nmap version of perror. It is just copy and
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pasted from pfatal(), except the exit has been replaced with a
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return. */
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void gh_perror(const char *err, ...) {
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#ifdef WIN32
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int lasterror =0;
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char *errstr = NULL;
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#endif
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va_list ap;
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va_start(ap, err);
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log_vwrite(LOG_STDERR, err, ap);
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va_end(ap);
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if (o.log_errors) {
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va_start(ap, err);
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log_vwrite(LOG_NORMAL, err, ap);
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va_end(ap);
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}
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#ifdef WIN32
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lasterror = GetLastError();
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FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER|FORMAT_MESSAGE_FROM_SYSTEM,
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NULL, lasterror, MAKELANGID (LANG_NEUTRAL, SUBLANG_DEFAULT),
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(LPTSTR) &errstr, 0, NULL);
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log_write(o.log_errors? LOG_NORMAL|LOG_STDERR : LOG_STDERR, ": %s (%d)\n",
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errstr, lasterror);
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HeapFree(GetProcessHeap(), 0, errstr);
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#else
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log_write(o.log_errors? LOG_NORMAL|LOG_STDERR : LOG_STDERR, ": %s (%d)\n",
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strerror(errno), errno);
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#endif /* WIN32 perror() compatability switch */
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if (o.log_errors) log_flush(LOG_NORMAL);
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fflush(stderr);
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return;
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}
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/* Report a failure to open an Ethernet device and exit through fatal. On
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Windows, shows a hint about privileges. */
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void fatal_eth_open_failure(const char *func, const char *devname) {
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#if WIN32
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error("\
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On Windows, this problem can be caused by a lack of privileges under\n\
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User Account Control (UAC). Start an elevated command prompt by\n\
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right-clicking on the command prompt shortcut and selecting \"Run as\n\
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Administrator\". Then enter the command\n\
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\n\
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net start npf\n\
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\n\
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This will load the Netgroup Packet Filter (NPF) service and allow Nmap\n\
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to run. Running Nmap or Zenmap under \"Run as Administrator\" also has\n\
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the side effect of loading NPF.\n\
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\n\
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You should have to do this only once per reboot. If you're not able to\n\
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do any of these things, try the --unprivileged option to avoid the use\n\
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of any raw network operations.\n");
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#endif
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fatal("%s: Failed to open ethernet device (%s)", func, devname); \
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}
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