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9bf2ec3884
svn merge --ignore-ancestry svn://svn.insecure.org/nmap@26621 svn://svn.insecure.org/nmap-exp/luis/nmap-os6 This is the IPv6 OS detection branch. "nmap -6 -O" works now, though at this point it only prints fingerprints and not OS guesses, because we need to collect more submissions.
212 lines
10 KiB
C++
212 lines
10 KiB
C++
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/***************************************************************************
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* RawData.cc -- The RawData Class represents a network packet payload. It *
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* is essentially a single buffer that may contain either random data or *
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* caller supplied data. This class can be used, for example, to be linked *
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* to a UDP datagram. *
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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) 1996-2011 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 with the clarifications and exceptions described *
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* below. This guarantees your right to use, modify, and redistribute *
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* this software under certain conditions. If you wish to embed Nmap *
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* technology into proprietary software, we sell alternative licenses *
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* (contact sales@insecure.com). Dozens of software vendors already *
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* license Nmap technology such as host discovery, port scanning, OS *
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* detection, and version detection. *
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* *
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* Note that the GPL places important restrictions on "derived works", yet *
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* it does not provide a detailed definition of that term. To avoid *
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* misunderstandings, 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: *
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* o Integrates source code from Nmap *
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* o Reads or includes Nmap copyrighted data files, such as *
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* nmap-os-db or nmap-service-probes. *
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* o Executes Nmap and parses the results (as opposed to typical shell or *
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* execution-menu apps, which simply display raw Nmap output and so are *
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* not derivative works.) *
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* o Integrates/includes/aggregates Nmap into a proprietary executable *
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* installer, such as those produced by InstallShield. *
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* o Links to a library or executes a program that does any of the above *
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* *
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* The term "Nmap" should be taken to also include any portions or derived *
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* works of Nmap. This list is not exclusive, but is meant to clarify our *
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* interpretation of derived works with some common examples. Our *
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* interpretation applies only to Nmap--we don't speak for other people's *
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* GPL works. *
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* *
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* If you have any questions about the GPL licensing restrictions on using *
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* Nmap in non-GPL works, we would be happy to help. As mentioned above, *
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* we also 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 as well as helping to *
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* fund the continued development of Nmap technology. Please email *
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* sales@insecure.com for further information. *
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* *
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* As a 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. You must obey the GNU GPL in all *
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* respects for all of the code used other than OpenSSL. If you modify *
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* this file, you may extend this exception to your version of the file, *
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* but you are not obligated to do so. *
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* *
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* If you received these files with a written license agreement or *
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* contract stating terms other than the terms above, then that *
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* alternative license agreement takes precedence over these comments. *
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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 nmap-dev@insecure.org for possible incorporation into the main *
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* distribution. By sending these changes to Fyodor or one of the *
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* Insecure.Org development mailing lists, it is assumed that you are *
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* offering the Nmap Project (Insecure.Com LLC) the unlimited, *
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* non-exclusive right to reuse, modify, and relicense the code. Nmap *
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* will always be available Open Source, but this is important because the *
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* inability to relicense code has caused devastating problems for other *
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* Free Software projects (such as KDE and NASM). We also occasionally *
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* relicense the code to third parties as discussed above. If you wish to *
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* specify special license conditions of your contributions, just say so *
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* 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 GNU *
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* General Public License v2.0 for more details at *
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* http://www.gnu.org/licenses/gpl-2.0.html , or in the COPYING file *
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* included with Nmap. *
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* *
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***************************************************************************/
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/* This code was originally part of the Nping tool. */
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#include "RawData.h"
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/******************************************************************************/
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/* CONTRUCTORS, DESTRUCTORS AND INITIALIZATION METHODS */
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/******************************************************************************/
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RawData::RawData(){
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this->reset();
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} /* End of RawData contructor */
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RawData::~RawData(){
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if(this->data!=NULL){
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free(this->data);
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this->data=NULL;
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}
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} /* End of RawData destructor */
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/** Sets every attribute to its default value */
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void RawData::reset(){
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this->data=NULL;
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this->length=0;
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} /* End of reset() */
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/******************************************************************************/
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/* PacketElement:: OVERWRITTEN METHODS */
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/******************************************************************************/
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u8 * RawData::getBufferPointer(){
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return this->getBufferPointer(NULL);
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} /* End of getBufferPointer() */
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u8 * RawData::getBufferPointer(int *mylen){
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if(mylen!=NULL)
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*mylen=this->length;
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return this->data;
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} /* End of getBufferPointer() */
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/** Added for consistency with the rest of classes of the PacketElement family. */
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int RawData::storeRecvData(const u8 *buf, size_t len){
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return this->store(buf, len);
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} /* End of storeRecvData() */
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/* Returns a protocol identifier. This is used by packet parsing funtions
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* that return linked lists of PacketElement objects, to determine the protocol
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* the object represents. */
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int RawData::protocol_id() const {
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return HEADER_TYPE_RAW_DATA;
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} /* End of protocol_id() */
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/** Determines if the data stored in the object after an storeRecvData() call
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* is valid and safe to use. This mainly checks the length of the data but may
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* also test the value of certain protocol fields to ensure their correctness.
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* @return the length, in bytes, of the header, if its found to be valid or
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* OP_FAILURE (-1) otherwise. */
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int RawData::validate(){
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return this->length;
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} /* End of validate() */
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/** Prints the contents of the header and calls print() on the next protocol
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* header in the chain (if there is any).
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* @return OP_SUCCESS on success and OP_FAILURE in case of error. */
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int RawData::print(FILE *output, int detail) const {
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if(detail<=PRINT_DETAIL_MED){
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fprintf(output, "Data[");
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fprintf(output, "%d byte%s]", this->length, (this->length!=1)? "s":"");
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}else{
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// Print hex dump
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fprintf(output, "Data[--HEXDUMP-- %d byte%s]", this->length, (this->length!=1)? "s":"");
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// @todo UNIMPLEMENTED. I don't want to use libnetutil's print_hexdump()
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// here because it introduces dependencies.
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}
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if(this->next!=NULL){
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print_separator(output, detail);
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next->print(output, detail);
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}
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return OP_SUCCESS;
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} /* End of print() */
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/******************************************************************************/
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/* PROTOCOL-SPECIFIC METHODS */
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/******************************************************************************/
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int RawData::store(const u8 *buf, size_t len){
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/* If buffer had already been set, try to reuse it. */
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if(this->data!=NULL){
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if( this->length >= (int)len ){
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memcpy(this->data, buf, len);
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this->length=(int)len;
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return OP_SUCCESS;
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}else{
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free(this->data);
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}
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}
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if( (this->data=(u8 *)calloc(len, sizeof(u8)))==NULL )
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return OP_FAILURE;
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memcpy(this->data, buf, len);
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this->length=(int)len;
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return OP_SUCCESS;
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} /* End of store() */
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int RawData::store(const char *str){
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if(str==NULL)
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return OP_FAILURE;
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else
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return this->store((const u8*)str, strlen(str));
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} /* End of store() */
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