/*************************************************************************** * nmap_error.cc -- Some simple error handling routines. * * * ***********************IMPORTANT NMAP LICENSE TERMS************************ * * * The Nmap Security Scanner is (C) 1996-2020 Insecure.Com 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.org) 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 "nmap_error.h" #include "output.h" #include "NmapOps.h" #include "xml.h" #include #if TIME_WITH_SYS_TIME # include # include #else # if HAVE_SYS_TIME_H # include # else # include # endif #endif extern NmapOps o; #ifdef WIN32 #include #endif /* WIN32 */ #ifndef HAVE_STRERROR char *strerror(int errnum) { static char buf[1024]; sprintf(buf, "your system is too old for strerror of errno %d\n", errnum); return buf; } #endif void fatal(const char *fmt, ...) { time_t timep; struct timeval tv; va_list ap; gettimeofday(&tv, NULL); timep = time(NULL); va_start(ap, fmt); log_vwrite(LOG_NORMAL|LOG_STDERR, fmt, ap); va_end(ap); log_write(LOG_NORMAL|LOG_STDERR, "\nQUITTING!\n"); if (xml_tag_open()) xml_close_start_tag(); if (!xml_root_written()) xml_start_tag("nmaprun"); /* Close all open XML elements but one. */ while (xml_depth() > 1) { xml_end_tag(); xml_newline(); } if (xml_depth() == 1) { char errbuf[1024]; va_start(ap, fmt); Vsnprintf(errbuf, sizeof(errbuf), fmt, ap); va_end(ap); xml_start_tag("runstats"); print_xml_finished_open(timep, &tv); xml_attribute("exit", "error"); xml_attribute("errormsg", "%s", errbuf); xml_close_empty_tag(); print_xml_hosts(); xml_newline(); xml_end_tag(); /* runstats */ xml_newline(); xml_end_tag(); /* nmaprun */ xml_newline(); } exit(1); } void error(const char *fmt, ...) { va_list ap; va_start(ap, fmt); log_vwrite(LOG_NORMAL|LOG_STDERR, fmt, ap); va_end(ap); log_write(LOG_NORMAL|LOG_STDERR , "\n"); return; } void pfatal(const char *fmt, ...) { time_t timep; struct timeval tv; va_list ap; int error_number; char errbuf[1024], *strerror_s; #ifdef WIN32 error_number = GetLastError(); FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER|FORMAT_MESSAGE_FROM_SYSTEM, NULL, error_number, MAKELANGID (LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR) &strerror_s, 0, NULL); #else error_number = errno; strerror_s = strerror(error_number); #endif gettimeofday(&tv, NULL); timep = time(NULL); va_start(ap, fmt); Vsnprintf(errbuf, sizeof(errbuf), fmt, ap); va_end(ap); log_write(LOG_NORMAL|LOG_STDERR, "%s: %s (%d)\n", errbuf, strerror_s, error_number); if (xml_tag_open()) xml_close_start_tag(); if (!xml_root_written()) xml_start_tag("nmaprun"); /* Close all open XML elements but one. */ while (xml_depth() > 1) { xml_end_tag(); xml_newline(); } if (xml_depth() == 1) { xml_start_tag("runstats"); print_xml_finished_open(timep, &tv); xml_attribute("exit", "error"); xml_attribute("errormsg", "%s: %s (%d)", errbuf, strerror_s, error_number); xml_close_empty_tag(); print_xml_hosts(); xml_newline(); xml_end_tag(); /* runstats */ xml_newline(); xml_end_tag(); /* nmaprun */ xml_newline(); } #ifdef WIN32 HeapFree(GetProcessHeap(), 0, strerror_s); #endif log_flush(LOG_NORMAL); fflush(stderr); exit(1); } /* This function is the Nmap version of perror. It is like pfatal, but it doesn't write to XML and it only returns, doesn't exit. */ void gh_perror(const char *fmt, ...) { va_list ap; int error_number; char *strerror_s; #ifdef WIN32 error_number = GetLastError(); FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER|FORMAT_MESSAGE_FROM_SYSTEM, NULL, error_number, MAKELANGID (LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR) &strerror_s, 0, NULL); #else error_number = errno; strerror_s = strerror(error_number); #endif va_start(ap, fmt); log_vwrite(LOG_NORMAL|LOG_STDERR, fmt, ap); va_end(ap); log_write(LOG_NORMAL|LOG_STDERR, ": %s (%d)\n", strerror_s, error_number); #ifdef WIN32 HeapFree(GetProcessHeap(), 0, strerror_s); #endif log_flush(LOG_NORMAL); fflush(stderr); return; }