From 0d47952611198ef6b1163f366dc03922d20b1475 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 09:42:04 +0200 Subject: Adding upstream version 7.94+git20230807.3be01efb1+dfsg. Signed-off-by: Daniel Baumann --- nping/output.cc | 244 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 244 insertions(+) create mode 100644 nping/output.cc (limited to 'nping/output.cc') diff --git a/nping/output.cc b/nping/output.cc new file mode 100644 index 0000000..2537216 --- /dev/null +++ b/nping/output.cc @@ -0,0 +1,244 @@ + +/*************************************************************************** + * output.h -- Some simple error and regular message output functions. * + * * + ***********************IMPORTANT NMAP LICENSE TERMS************************ + * + * The Nmap Security Scanner is (C) 1996-2023 Nmap Software 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.com) 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/ + * + ***************************************************************************/ + +/* 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); + + 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) ){ + va_start(list, str); + vfprintf(stderr, str, list); + va_end(list); + fprintf(stderr,"\n"); /* Print to stderr */ + } + + 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); + + 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) ){ + va_start(list, str); + vfprintf(stderr, str, list); /* Print to stderr */ + va_end(list); + if( !skipnewline ) + fprintf(stderr,"\n"); + } + 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); + + 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) ){ + va_start(list, str); + vfprintf(stdout, str, list); /* Print to stderr */ + va_end(list); + if( !skipnewline ) + fprintf(stdout,"\n"); + } + 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() */ -- cgit v1.2.3