/*************************************************************************** * output.h -- Some simple error and regular message output functions. * * * ***********************IMPORTANT NMAP LICENSE TERMS************************ * * * The Nmap Security Scanner is (C) 1996-2012 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 with the clarifications and exceptions described * * below. 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@insecure.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 "derived 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: * * o Integrates source code from Nmap * * o Reads or includes Nmap copyrighted data files, such as * * nmap-os-db or nmap-service-probes. * * o Executes Nmap and parses the results (as opposed to typical shell or * * execution-menu apps, which simply display raw Nmap output and so are * * not derivative works.) * * o Integrates/includes/aggregates Nmap into a proprietary executable * * installer, such as those produced by InstallShield. * * o Links to a library or executes a program that does any of the above * * * * The term "Nmap" should be taken to also include any portions or derived * * works of Nmap, as well as other software we distribute under this * * license such as Zenmap, Ncat, and Nping. This list is not exclusive, * * but is meant to clarify our interpretation of derived works with some * * common examples. Our interpretation applies only to Nmap--we don't * * speak for other people's GPL works. * * * * If you have any questions about the GPL licensing restrictions on using * * Nmap in non-GPL works, we would be 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@insecure.com for * * further information. * * * * As a 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. You must obey the GNU GPL in all * * respects for all of the code used other than OpenSSL. If you modify * * this file, you may extend this exception to your version of the file, * * but you are not obligated to do so. * * * * If you received these files with a written license agreement or * * contract stating terms other than the terms above, then that * * alternative license agreement takes precedence over these comments. * * * * 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 (none * * have been found so far). * * * * 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 nmap-dev@insecure.org 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 GNU * * General Public License v2.0 for more details at * * http://www.gnu.org/licenses/gpl-2.0.html , or in the COPYING file * * included with Nmap. * * * ***************************************************************************/ /* 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 outFatal(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 outFatal() */ /** 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: * * outError(QT_2|NO_NEWLINE, "I don't want newlines in this string"); * */ int outError(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 outError() */ /** 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: * * outPrint(VB_2|NO_NEWLINE, "I don't want newlines in this string"); * */ int outPrint(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 outPrint() */ /*****************************************************************************/ /* 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 writting 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() */