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278 lines
13 KiB
C++
278 lines
13 KiB
C++
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/***************************************************************************
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* output.h -- Some simple error and regular message output functions. *
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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) 1996-2012 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, version detection, and the Nmap Scripting Engine. *
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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 interpret that term as broadly as copyright law *
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* allows. For example, 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, as well as other software we distribute under this *
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* license such as Zenmap, Ncat, and Nping. This list is not exclusive, *
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* but is meant to clarify our interpretation of derived works with some *
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* common examples. Our interpretation applies only to Nmap--we don't *
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* speak for other people's 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. They also fund the *
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* continued development of Nmap. Please email sales@insecure.com for *
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* 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, or checking them into the Nmap *
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* source code repository, it is understood (unless you specify otherwise) *
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* that you are offering the Nmap Project (Insecure.Com LLC) the *
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* unlimited, non-exclusive right to reuse, modify, and relicense the *
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* code. Nmap will always be available Open Source, but this is important *
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* because the inability to relicense code has caused devastating problems *
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* for other Free Software projects (such as KDE and NASM). We also *
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* occasionally relicense the code to third parties as discussed above. *
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* If you wish to specify special license conditions of your *
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* contributions, just say so 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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/* This file contains the functions that are used to print stuff to stout or
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* stderr in Nping. All of them take a "level" and then a variable list of
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* argument. The "level" parameter states which is the minimum level of
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* verbosity that should NpingOps::vb contain to print the message to stdout.
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* For a more detailed explanation, check documentation of verbosity and
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* debugging levels in nping.h */
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#include "NpingOps.h"
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#include "output.h"
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extern NpingOps o;
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#ifdef WIN32
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#include <windows.h>
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#endif /* WIN32 */
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/** Print fatal error messages to stderr and then exits.
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* @warning This function does not return because it calls exit() */
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int outFatal(int level, const char *str, ...) {
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va_list list;
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char errstr[MAX_ERR_STR_LEN];
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memset(errstr,0, MAX_ERR_STR_LEN);
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va_start(list, str);
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fflush(stdout);
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fflush(stderr);
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int current_vb_level= o.getVerbosity();
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int current_dbg_level= o.getDebugging();
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/* If supplied level is more than current level, do nothing */
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if( level>=QT_4 && level<=VB_4 && level>current_vb_level )
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return OP_SUCCESS;
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if( level>=DBG_0 && level<=DBG_9 && level>current_dbg_level )
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return OP_SUCCESS;
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if ( (level>=QT_3 && level<=VB_4) || (level>=DBG_1 && level<=DBG_9) ){
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vfprintf(stderr, str, list);
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fprintf(stderr,"\n"); /* Print to stderr */
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}
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va_end(list);
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exit(EXIT_FAILURE);
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return OP_SUCCESS;
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} /* End of outFatal() */
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/** Prints recoverable error message to stderr and returns. This function
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* inserts one \n newline automatically in every call. To avoid that
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* behaviour it is possible to OR the supplied level with the constant
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* NO_NEWLINE like this:
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*
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* outError(QT_2|NO_NEWLINE, "I don't want newlines in this string");
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* */
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int outError(int level, const char *str, ...) {
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va_list list;
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char errstr[MAX_ERR_STR_LEN];
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bool skipnewline=false;
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memset(errstr,0, MAX_ERR_STR_LEN);
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va_start(list, str);
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fflush(stdout);
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fflush(stderr);
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int current_vb_level= o.getVerbosity();
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int current_dbg_level= o.getDebugging();
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/* Determine if caller requested that we don't print a newline character */
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if ( level & NO_NEWLINE ){
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level ^= NO_NEWLINE; /* Unset the flag restoring the original level */
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skipnewline=true;
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}
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/* If supplied level is more than current level, do nothing */
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if( level>=QT_4 && level<=VB_4 && level>current_vb_level )
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return OP_SUCCESS;
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if( level>=DBG_0 && level<=DBG_9 && level>current_dbg_level )
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return OP_SUCCESS;
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/* Otherwise, print the info to stderr*/
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if ( (level>=QT_3 && level<=VB_4) || (level>=DBG_1 && level<=DBG_9) ){
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vfprintf(stderr, str, list); /* Print to stderr */
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if( !skipnewline )
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fprintf(stderr,"\n");
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}
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va_end(list);
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return OP_SUCCESS;
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} /* End of outError() */
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/** Print regular messages to stdout. This function inserts one \n newline
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* automatically in every call. To avoid that behaviour it is possible to
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* OR the supplied level with constant NO_NEWLINE like this:
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*
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* outPrint(VB_2|NO_NEWLINE, "I don't want newlines in this string");
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* */
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int outPrint(int level, const char *str, ...){
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va_list list;
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char errstr[MAX_ERR_STR_LEN];
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bool skipnewline=false;
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memset(errstr,0, MAX_ERR_STR_LEN);
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va_start(list, str);
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fflush(stdout);
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int current_vb_level= o.getVerbosity();
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int current_dbg_level= o.getDebugging();
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/* Determine if caller requested that we don't print a newline character */
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if ( level & NO_NEWLINE ){
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level ^= NO_NEWLINE; /* Unset the flag restoring the original level */
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skipnewline=true;
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}
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/* If supplied level is more than current level, do nothing */
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if( level>=QT_4 && level<=VB_4 && level>current_vb_level )
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return OP_SUCCESS;
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if( level>=DBG_0 && level<=DBG_9 && level>current_dbg_level )
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return OP_SUCCESS;
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/* Otherwise, print the info to stderr*/
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if ( (level>=QT_3 && level<=VB_4) || (level>=DBG_1 && level<=DBG_9) ){
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vfprintf(stdout, str, list); /* Print to stderr */
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if( !skipnewline )
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fprintf(stdout,"\n");
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}
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va_end(list);
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return OP_SUCCESS;
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} /* End of outPrint() */
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/*****************************************************************************/
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/* The following functions are provided only for compatibility with some */
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/* code from Nmap. They should NOT be used in any new piece of code unless */
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/* the code you are writting needs to be shared with nmap. */
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/*****************************************************************************/
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/** Print fatal error messages to stderr and then exits.
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* @warning This function does not return because it calls exit() */
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int fatal(const char *str, ...) {
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va_list list;
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char errstr[MAX_ERR_STR_LEN];
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memset(errstr,0, MAX_ERR_STR_LEN);
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va_start(list, str);
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fflush(stdout);
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/* Print error msg to strerr */
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vfprintf(stderr, str, list);
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fprintf(stderr,"\n");
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va_end(list);
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exit(EXIT_FAILURE);
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return OP_SUCCESS;
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} /* End of fatal() */
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/** Print error messages to stderr and then return. */
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int error(const char *str, ...) {
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va_list list;
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char errstr[MAX_ERR_STR_LEN];
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memset(errstr,0, MAX_ERR_STR_LEN);
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va_start(list, str);
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fflush(stdout);
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/* Print error msg to strerr */
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vfprintf(stderr, str, list);
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fprintf(stderr,"\n");
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va_end(list);
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return OP_SUCCESS;
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} /* End of error() */
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/** Needed by struct interface_info *getinterfaces(int *howmany) in common.h
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* (taken originally from nmap tcpip.cc */
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int pfatal(const char *str, ...) {
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va_list list;
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char errstr[MAX_ERR_STR_LEN];
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memset(errstr,0, MAX_ERR_STR_LEN);
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va_start(list, str);
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fflush(stdout);
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/* Print error msg to strerr */
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vfprintf(stderr, str, list);
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fprintf(stderr,"\n");
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va_end(list);
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exit(EXIT_FAILURE);
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return OP_SUCCESS;
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} /* End of fatal() */
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