mirror of
https://github.com/nmap/nmap.git
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246 lines
7.2 KiB
C++
246 lines
7.2 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) 1996-2025 Nmap Software LLC ("The Nmap
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* Project"). Nmap is also a registered trademark of the Nmap Project.
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*
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* This program is distributed under the terms of the Nmap Public Source
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* License (NPSL). The exact license text applying to a particular Nmap
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* release or source code control revision is contained in the LICENSE
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* file distributed with that version of Nmap or source code control
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* revision. More Nmap copyright/legal information is available from
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* https://nmap.org/book/man-legal.html, and further information on the
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* NPSL license itself can be found at https://nmap.org/npsl/ . This
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* header summarizes some key points from the Nmap license, but is no
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* substitute for the actual license text.
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*
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* Nmap is generally free for end users to download and use themselves,
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* including commercial use. It is available from https://nmap.org.
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*
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* The Nmap license generally prohibits companies from using and
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* redistributing Nmap in commercial products, but we sell a special Nmap
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* OEM Edition with a more permissive license and special features for
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* this purpose. See https://nmap.org/oem/
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*
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* If you have received a written Nmap license agreement or contract
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* stating terms other than these (such as an Nmap OEM license), you may
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* choose to use and redistribute Nmap under those terms instead.
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*
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* The official Nmap Windows builds include the Npcap software
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* (https://npcap.com) for packet capture and transmission. It is under
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* separate license terms which forbid redistribution without special
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* permission. So the official Nmap Windows builds may not be redistributed
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* without special permission (such as an Nmap OEM license).
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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.
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*
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* Source code also allows you to port Nmap to new platforms, fix bugs, and
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* add new features. You are highly encouraged to submit your changes as a
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* Github PR or by email to the dev@nmap.org mailing list for possible
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* incorporation into the main distribution. Unless you specify otherwise, it
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* is understood that you are offering us very broad rights to use your
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* submissions as described in the Nmap Public Source License Contributor
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* Agreement. This is important because we fund the project by selling licenses
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* with various terms, and also because the inability to relicense code has
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* caused devastating problems for other Free Software projects (such as KDE
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* and NASM).
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*
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* The free version of Nmap is distributed in the hope that it will be
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* useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Warranties,
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* indemnification and commercial support are all available through the
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* Npcap OEM program--see https://nmap.org/oem/
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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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#include "xml.h"
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#include <errno.h>
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#if TIME_WITH_SYS_TIME
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# include <sys/time.h>
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# include <time.h>
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#else
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# if HAVE_SYS_TIME_H
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# include <sys/time.h>
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# else
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# include <time.h>
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# endif
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#endif
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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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#ifndef HAVE_STRERROR
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char *strerror(int errnum) {
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static char buf[1024];
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sprintf(buf, "your system is too old for strerror of errno %d\n", errnum);
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return buf;
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}
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#endif
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void fatal(const char *fmt, ...) {
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time_t timep;
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struct timeval tv;
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va_list ap;
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gettimeofday(&tv, NULL);
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timep = time(NULL);
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va_start(ap, fmt);
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log_vwrite(LOG_NORMAL|LOG_STDERR, fmt, ap);
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va_end(ap);
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log_write(LOG_NORMAL|LOG_STDERR, "\nQUITTING!\n");
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if (xml_tag_open())
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xml_close_start_tag();
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if (!xml_root_written())
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xml_start_tag("nmaprun");
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/* Close all open XML elements but one. */
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while (xml_depth() > 1) {
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xml_end_tag();
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xml_newline();
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}
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if (xml_depth() == 1) {
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char errbuf[1024];
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va_start(ap, fmt);
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Vsnprintf(errbuf, sizeof(errbuf), fmt, ap);
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va_end(ap);
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xml_start_tag("runstats");
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print_xml_finished_open(timep, &tv);
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xml_attribute("exit", "error");
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xml_attribute("errormsg", "%s", errbuf);
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xml_close_empty_tag();
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print_xml_hosts();
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xml_newline();
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xml_end_tag(); /* runstats */
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xml_newline();
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xml_end_tag(); /* nmaprun */
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xml_newline();
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}
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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_NORMAL|LOG_STDERR, fmt, ap);
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va_end(ap);
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log_write(LOG_NORMAL|LOG_STDERR , "\n");
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return;
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}
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void pfatal(const char *fmt, ...) {
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time_t timep;
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struct timeval tv;
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va_list ap;
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int error_number;
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char errbuf[1024], *strerror_s;
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#ifdef WIN32
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error_number = GetLastError();
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FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER|FORMAT_MESSAGE_FROM_SYSTEM,
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NULL, error_number, MAKELANGID (LANG_NEUTRAL, SUBLANG_DEFAULT),
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(LPTSTR) &strerror_s, 0, NULL);
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#else
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error_number = errno;
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strerror_s = strerror(error_number);
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#endif
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gettimeofday(&tv, NULL);
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timep = time(NULL);
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va_start(ap, fmt);
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Vsnprintf(errbuf, sizeof(errbuf), fmt, ap);
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va_end(ap);
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log_write(LOG_NORMAL|LOG_STDERR, "%s: %s (%d)\n",
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errbuf, strerror_s, error_number);
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if (xml_tag_open())
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xml_close_start_tag();
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if (!xml_root_written())
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xml_start_tag("nmaprun");
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/* Close all open XML elements but one. */
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while (xml_depth() > 1) {
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xml_end_tag();
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xml_newline();
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}
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if (xml_depth() == 1) {
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xml_start_tag("runstats");
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print_xml_finished_open(timep, &tv);
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xml_attribute("exit", "error");
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xml_attribute("errormsg", "%s: %s (%d)", errbuf, strerror_s, error_number);
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xml_close_empty_tag();
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print_xml_hosts();
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xml_newline();
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xml_end_tag(); /* runstats */
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xml_newline();
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xml_end_tag(); /* nmaprun */
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xml_newline();
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}
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#ifdef WIN32
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HeapFree(GetProcessHeap(), 0, strerror_s);
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#endif
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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 like pfatal, but it
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doesn't write to XML and it only returns, doesn't exit. */
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void gh_perror(const char *fmt, ...) {
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va_list ap;
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int error_number;
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char *strerror_s;
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#ifdef WIN32
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error_number = GetLastError();
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FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER|FORMAT_MESSAGE_FROM_SYSTEM,
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NULL, error_number, MAKELANGID (LANG_NEUTRAL, SUBLANG_DEFAULT),
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(LPTSTR) &strerror_s, 0, NULL);
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#else
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error_number = errno;
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strerror_s = strerror(error_number);
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#endif
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va_start(ap, fmt);
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log_vwrite(LOG_NORMAL|LOG_STDERR, fmt, ap);
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va_end(ap);
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log_write(LOG_NORMAL|LOG_STDERR, ": %s (%d)\n",
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strerror_s, error_number);
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#ifdef WIN32
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HeapFree(GetProcessHeap(), 0, strerror_s);
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#endif
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log_flush(LOG_NORMAL);
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fflush(stderr);
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return;
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}
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