/*************************************************************************** * output.h -- Some simple error and regular message output functions. * * * ***********************IMPORTANT NMAP LICENSE TERMS************************ * * * The Nmap Security Scanner is (C) 1996-2015 Insecure.Com LLC. Nmap is * * also a registered trademark of Insecure.Com LLC. This program is free * * software; you may redistribute and/or modify it under the terms of the * * GNU General Public License as published by the Free Software * * Foundation; Version 2 ("GPL"), BUT ONLY WITH ALL OF THE CLARIFICATIONS * * AND EXCEPTIONS DESCRIBED HEREIN. This guarantees your right to use, * * modify, and redistribute this software under certain conditions. If * * you wish to embed Nmap technology into proprietary software, we sell * * alternative licenses (contact sales@nmap.com). Dozens of software * * vendors already license Nmap technology such as host discovery, port * * scanning, OS detection, version detection, and the Nmap Scripting * * Engine. * * * * Note that the GPL places important restrictions on "derivative works", * * yet it does not provide a detailed definition of that term. To avoid * * misunderstandings, we interpret that term as broadly as copyright law * * allows. For example, we consider an application to constitute a * * derivative work for the purpose of this license if it does any of the * * following with any software or content covered by this license * * ("Covered Software"): * * * * o Integrates source code from Covered Software. * * * * o Reads or includes copyrighted data files, such as Nmap's nmap-os-db * * or nmap-service-probes. * * * * o Is designed specifically to execute Covered Software and parse the * * results (as opposed to typical shell or execution-menu apps, which will * * execute anything you tell them to). * * * * o Includes Covered Software in a proprietary executable installer. The * * installers produced by InstallShield are an example of this. Including * * Nmap with other software in compressed or archival form does not * * trigger this provision, provided appropriate open source decompression * * or de-archiving software is widely available for no charge. For the * * purposes of this license, an installer is considered to include Covered * * Software even if it actually retrieves a copy of Covered Software from * * another source during runtime (such as by downloading it from the * * Internet). * * * * o Links (statically or dynamically) to a library which does any of the * * above. * * * * o Executes a helper program, module, or script to do any of the above. * * * * This list is not exclusive, but is meant to clarify our interpretation * * of derived works with some common examples. Other people may interpret * * the plain GPL differently, so we consider this a special exception to * * the GPL that we apply to Covered Software. Works which meet any of * * these conditions must conform to all of the terms of this license, * * particularly including the GPL Section 3 requirements of providing * * source code and allowing free redistribution of the work as a whole. * * * * As another special exception to the GPL terms, Insecure.Com LLC grants * * permission to link the code of this program with any version of the * * OpenSSL library which is distributed under a license identical to that * * listed in the included docs/licenses/OpenSSL.txt file, and distribute * * linked combinations including the two. * * * * Any redistribution of Covered Software, including any derived works, * * must obey and carry forward all of the terms of this license, including * * obeying all GPL rules and restrictions. For example, source code of * * the whole work must be provided and free redistribution must be * * allowed. All GPL references to "this License", are to be treated as * * including the terms and conditions of this license text as well. * * * * Because this license imposes special exceptions to the GPL, Covered * * Work may not be combined (even as part of a larger work) with plain GPL * * software. The terms, conditions, and exceptions of this license must * * be included as well. This license is incompatible with some other open * * source licenses as well. In some cases we can relicense portions of * * Nmap or grant special permissions to use it in other open source * * software. Please contact fyodor@nmap.org with any such requests. * * Similarly, we don't incorporate incompatible open source software into * * Covered Software without special permission from the copyright holders. * * * * If you have any questions about the licensing restrictions on using * * Nmap in other works, are happy to help. As mentioned above, we also * * offer alternative license to integrate Nmap into proprietary * * applications and appliances. These contracts have been sold to dozens * * of software vendors, and generally include a perpetual license as well * * as providing for priority support and updates. They also fund the * * continued development of Nmap. Please email sales@nmap.com for further * * information. * * * * If you have received a written license agreement or contract for * * Covered Software stating terms other than these, you may choose to use * * and redistribute Covered Software under those terms instead of these. * * * * 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 send your changes * * to the dev@nmap.org mailing list for possible incorporation into the * * main distribution. By sending these changes to Fyodor or one of the * * Insecure.Org development mailing lists, or checking them into the Nmap * * source code repository, it is understood (unless you specify otherwise) * * that you are offering the Nmap Project (Insecure.Com LLC) the * * unlimited, non-exclusive right to reuse, modify, and relicense the * * code. Nmap will always be available Open Source, but this is important * * because the inability to relicense code has caused devastating problems * * for other Free Software projects (such as KDE and NASM). We also * * occasionally relicense the code to third parties as discussed above. * * If you wish to specify special license conditions of your * * contributions, just say so when you send them. * * * * This program 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. See the Nmap * * license file for more details (it's in a COPYING file included with * * Nmap, and also available from https://svn.nmap.org/nmap/COPYING) * * * ***************************************************************************/ /* This file contains the functions that are used to print stuff to stout or * stderr in Nping. All of them take a "level" and then a variable list of * argument. The "level" parameter states which is the minimum level of * verbosity that should NpingOps::vb contain to print the message to stdout. * For a more detailed explanation, check documentation of verbosity and * debugging levels in nping.h */ #include "NpingOps.h" #include "output.h" extern NpingOps o; #ifdef WIN32 #include #endif /* WIN32 */ /** Print fatal error messages to stderr and then exits. * @warning This function does not return because it calls exit() */ int nping_fatal(int level, const char *str, ...) { va_list list; char errstr[MAX_ERR_STR_LEN]; memset(errstr,0, MAX_ERR_STR_LEN); va_start(list, str); fflush(stdout); fflush(stderr); int current_vb_level= o.getVerbosity(); int current_dbg_level= o.getDebugging(); /* If supplied level is more than current level, do nothing */ if( level>=QT_4 && level<=VB_4 && level>current_vb_level ) return OP_SUCCESS; if( level>=DBG_0 && level<=DBG_9 && level>current_dbg_level ) return OP_SUCCESS; if ( (level>=QT_3 && level<=VB_4) || (level>=DBG_1 && level<=DBG_9) ){ vfprintf(stderr, str, list); fprintf(stderr,"\n"); /* Print to stderr */ } va_end(list); exit(EXIT_FAILURE); return OP_SUCCESS; } /* End of nping_fatal() */ /** Prints recoverable error message to stderr and returns. This function * inserts one \n newline automatically in every call. To avoid that * behaviour it is possible to OR the supplied level with the constant * NO_NEWLINE like this: * * nping_warning(QT_2|NO_NEWLINE, "I don't want newlines in this string"); * */ int nping_warning(int level, const char *str, ...) { va_list list; char errstr[MAX_ERR_STR_LEN]; bool skipnewline=false; memset(errstr,0, MAX_ERR_STR_LEN); va_start(list, str); fflush(stdout); fflush(stderr); int current_vb_level= o.getVerbosity(); int current_dbg_level= o.getDebugging(); /* Determine if caller requested that we don't print a newline character */ if ( level & NO_NEWLINE ){ level ^= NO_NEWLINE; /* Unset the flag restoring the original level */ skipnewline=true; } /* If supplied level is more than current level, do nothing */ if( level>=QT_4 && level<=VB_4 && level>current_vb_level ) return OP_SUCCESS; if( level>=DBG_0 && level<=DBG_9 && level>current_dbg_level ) return OP_SUCCESS; /* Otherwise, print the info to stderr*/ if ( (level>=QT_3 && level<=VB_4) || (level>=DBG_1 && level<=DBG_9) ){ vfprintf(stderr, str, list); /* Print to stderr */ if( !skipnewline ) fprintf(stderr,"\n"); } va_end(list); return OP_SUCCESS; } /* End of nping_warning() */ /** Print regular messages to stdout. This function inserts one \n newline * automatically in every call. To avoid that behaviour it is possible to * OR the supplied level with constant NO_NEWLINE like this: * * nping_print(VB_2|NO_NEWLINE, "I don't want newlines in this string"); * */ int nping_print(int level, const char *str, ...){ va_list list; char errstr[MAX_ERR_STR_LEN]; bool skipnewline=false; memset(errstr,0, MAX_ERR_STR_LEN); va_start(list, str); fflush(stdout); int current_vb_level= o.getVerbosity(); int current_dbg_level= o.getDebugging(); /* Determine if caller requested that we don't print a newline character */ if ( level & NO_NEWLINE ){ level ^= NO_NEWLINE; /* Unset the flag restoring the original level */ skipnewline=true; } /* If supplied level is more than current level, do nothing */ if( level>=QT_4 && level<=VB_4 && level>current_vb_level ) return OP_SUCCESS; if( level>=DBG_0 && level<=DBG_9 && level>current_dbg_level ) return OP_SUCCESS; /* Otherwise, print the info to stderr*/ if ( (level>=QT_3 && level<=VB_4) || (level>=DBG_1 && level<=DBG_9) ){ vfprintf(stdout, str, list); /* Print to stderr */ if( !skipnewline ) fprintf(stdout,"\n"); } va_end(list); return OP_SUCCESS; } /* End of nping_print() */ /*****************************************************************************/ /* The following functions are provided only for compatibility with some */ /* code from Nmap. They should NOT be used in any new piece of code unless */ /* the code you are writing needs to be shared with nmap. */ /*****************************************************************************/ /** Print fatal error messages to stderr and then exits. * @warning This function does not return because it calls exit() */ int fatal(const char *str, ...) { va_list list; char errstr[MAX_ERR_STR_LEN]; memset(errstr,0, MAX_ERR_STR_LEN); va_start(list, str); fflush(stdout); /* Print error msg to strerr */ vfprintf(stderr, str, list); fprintf(stderr,"\n"); va_end(list); exit(EXIT_FAILURE); return OP_SUCCESS; } /* End of fatal() */ /** Print error messages to stderr and then return. */ int error(const char *str, ...) { va_list list; char errstr[MAX_ERR_STR_LEN]; memset(errstr,0, MAX_ERR_STR_LEN); va_start(list, str); fflush(stdout); /* Print error msg to strerr */ vfprintf(stderr, str, list); fprintf(stderr,"\n"); va_end(list); return OP_SUCCESS; } /* End of error() */ /** Needed by struct interface_info *getinterfaces(int *howmany) in common.h * (taken originally from nmap tcpip.cc */ int pfatal(const char *str, ...) { va_list list; char errstr[MAX_ERR_STR_LEN]; memset(errstr,0, MAX_ERR_STR_LEN); va_start(list, str); fflush(stdout); /* Print error msg to strerr */ vfprintf(stderr, str, list); fprintf(stderr,"\n"); va_end(list); exit(EXIT_FAILURE); return OP_SUCCESS; } /* End of fatal() */