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309 lines
15 KiB
C++
309 lines
15 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) 1996-2013 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 ("GPL"), BUT ONLY WITH ALL OF THE CLARIFICATIONS *
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* AND EXCEPTIONS DESCRIBED HEREIN. This guarantees your right to use, *
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* modify, and redistribute this software under certain conditions. If *
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* you wish to embed Nmap technology into proprietary software, we sell *
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* alternative licenses (contact sales@nmap.com). Dozens of software *
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* vendors already license Nmap technology such as host discovery, port *
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* scanning, OS detection, version detection, and the Nmap Scripting *
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* Engine. *
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* *
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* Note that the GPL places important restrictions on "derivative works", *
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* yet 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 with any software or content covered by this license *
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* ("Covered Software"): *
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* *
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* o Integrates source code from Covered Software. *
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* *
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* o Reads or includes copyrighted data files, such as Nmap's nmap-os-db *
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* or nmap-service-probes. *
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* *
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* o Is designed specifically to execute Covered Software and parse the *
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* results (as opposed to typical shell or execution-menu apps, which will *
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* execute anything you tell them to). *
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* *
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* o Includes Covered Software in a proprietary executable installer. The *
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* installers produced by InstallShield are an example of this. Including *
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* Nmap with other software in compressed or archival form does not *
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* trigger this provision, provided appropriate open source decompression *
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* or de-archiving software is widely available for no charge. For the *
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* purposes of this license, an installer is considered to include Covered *
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* Software even if it actually retrieves a copy of Covered Software from *
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* another source during runtime (such as by downloading it from the *
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* Internet). *
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* *
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* o Links (statically or dynamically) to a library which does any of the *
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* above. *
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* *
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* o Executes a helper program, module, or script to do any of the above. *
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* *
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* This list is not exclusive, but is meant to clarify our interpretation *
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* of derived works with some common examples. Other people may interpret *
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* the plain GPL differently, so we consider this a special exception to *
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* the GPL that we apply to Covered Software. Works which meet any of *
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* these conditions must conform to all of the terms of this license, *
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* particularly including the GPL Section 3 requirements of providing *
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* source code and allowing free redistribution of the work as a whole. *
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* *
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* As another 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. *
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* *
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* Any redistribution of Covered Software, including any derived works, *
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* must obey and carry forward all of the terms of this license, including *
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* obeying all GPL rules and restrictions. For example, source code of *
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* the whole work must be provided and free redistribution must be *
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* allowed. All GPL references to "this License", are to be treated as *
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* including the terms and conditions of this license text as well. *
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* *
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* Because this license imposes special exceptions to the GPL, Covered *
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* Work may not be combined (even as part of a larger work) with plain GPL *
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* software. The terms, conditions, and exceptions of this license must *
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* be included as well. This license is incompatible with some other open *
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* source licenses as well. In some cases we can relicense portions of *
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* Nmap or grant special permissions to use it in other open source *
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* software. Please contact fyodor@nmap.org with any such requests. *
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* Similarly, we don't incorporate incompatible open source software into *
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* Covered Software without special permission from the copyright holders. *
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* *
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* If you have any questions about the licensing restrictions on using *
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* Nmap in other works, are happy to help. As mentioned above, we also *
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* 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@nmap.com for further *
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* information. *
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* *
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* If you have received a written license agreement or contract for *
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* Covered Software stating terms other than these, you may choose to use *
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* and redistribute Covered Software under those terms instead of these. *
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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 the dev@nmap.org mailing list for possible incorporation into the *
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* main 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 Nmap *
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* license file for more details (it's in a COPYING file included with *
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* Nmap, and also available from https://svn.nmap.org/nmap/COPYING *
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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 nping_fatal(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 nping_fatal() */
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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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* nping_warning(QT_2|NO_NEWLINE, "I don't want newlines in this string");
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* */
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int nping_warning(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 nping_warning() */
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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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* nping_print(VB_2|NO_NEWLINE, "I don't want newlines in this string");
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* */
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int nping_print(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 nping_print() */
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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 writing 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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