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+
+/***************************************************************************
+ * 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 <windows.h>
+#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() */
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