mirror of
https://github.com/nmap/nmap.git
synced 2025-12-08 05:31:31 +00:00
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.
251 lines
12 KiB
C++
Executable File
251 lines
12 KiB
C++
Executable File
|
|
/***************************************************************************
|
|
* EthernetHeader.cc -- The EthernetHeader Class represents an Ethernet *
|
|
* header and footer. It contains methods to set the different header *
|
|
* fields. These methods tipically perform the necessary error checks and *
|
|
* byte order conversions. *
|
|
* *
|
|
***********************IMPORTANT NMAP LICENSE TERMS************************
|
|
* *
|
|
* The Nmap Security Scanner is (C) 1996-2011 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, and version detection. *
|
|
* *
|
|
* 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 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. 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 as well as helping to *
|
|
* fund the continued development of Nmap technology. 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, it is assumed 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 code was originally part of the Nping tool. */
|
|
|
|
#include "EthernetHeader.h"
|
|
|
|
/******************************************************************************/
|
|
/* CONTRUCTORS, DESTRUCTORS AND INITIALIZATION METHODS */
|
|
/******************************************************************************/
|
|
EthernetHeader::EthernetHeader(){
|
|
this->reset();
|
|
} /* End of EthernetHeader constructor */
|
|
|
|
|
|
EthernetHeader::~EthernetHeader(){
|
|
|
|
} /* End of EthernetHeader destructor */
|
|
|
|
|
|
/** Sets every attribute to its default value */
|
|
void EthernetHeader::reset(){
|
|
memset(&this->h, 0, sizeof(nping_eth_hdr_t));
|
|
this->length=ETH_HEADER_LEN;
|
|
} /* End of reset() */
|
|
|
|
|
|
/** @warning This method is essential for the superclass getBinaryBuffer()
|
|
* method to work. Do NOT change a thing unless you know what you're doing */
|
|
u8 * EthernetHeader::getBufferPointer(){
|
|
return (u8*)(&h);
|
|
} /* End of getBufferPointer() */
|
|
|
|
|
|
/******************************************************************************/
|
|
/* PacketElement:: OVERWRITTEN METHODS */
|
|
/******************************************************************************/
|
|
|
|
/** Stores supplied packet in the internal buffer so the information
|
|
* can be accessed using the standard get & set methods.
|
|
* @warning The EthernetHeader class is able to hold a maximum of 14 bytes.
|
|
* If the supplied buffer is longer than that, only the first 14 bytes will be
|
|
* stored in the internal buffer.
|
|
* @warning Supplied len MUST be at least 14 bytes (Ethernet header length).
|
|
* @return OP_SUCCESS on success and OP_FAILURE in case of error */
|
|
int EthernetHeader::storeRecvData(const u8 *buf, size_t len){
|
|
if(buf==NULL || len<ETH_HEADER_LEN){
|
|
return OP_FAILURE;
|
|
}else{
|
|
this->reset(); /* Re-init the object, just in case the caller had used it already */
|
|
this->length=ETH_HEADER_LEN;
|
|
memcpy(&(this->h), buf, ETH_HEADER_LEN);
|
|
}
|
|
return OP_SUCCESS;
|
|
} /* End of storeRecvData() */
|
|
|
|
|
|
/* Returns a protocol identifier. This is used by packet parsing funtions
|
|
* that return linked lists of PacketElement objects, to determine the protocol
|
|
* the object represents. */
|
|
int EthernetHeader::protocol_id() const {
|
|
return HEADER_TYPE_ETHERNET;
|
|
} /* End of protocol_id() */
|
|
|
|
|
|
/** Determines if the data stored in the object after an storeRecvData() call
|
|
* is valid and safe to use. This mainly checks the length of the data but may
|
|
* also test the value of certain protocol fields to ensure their correctness.
|
|
* @return the length, in bytes, of the header, if its found to be valid or
|
|
* OP_FAILURE (-1) otherwise. */
|
|
int EthernetHeader::validate(){
|
|
if( this->length!=ETH_HEADER_LEN)
|
|
return OP_FAILURE;
|
|
else
|
|
return ETH_HEADER_LEN;
|
|
} /* End of validate() */
|
|
|
|
|
|
/** Prints the contents of the header and calls print() on the next protocol
|
|
* header in the chain (if there is any).
|
|
* @return OP_SUCCESS on success and OP_FAILURE in case of error. */
|
|
int EthernetHeader::print(FILE *output, int detail) const {
|
|
|
|
fprintf(output, "Eth[");
|
|
|
|
for(int i=0; i<6; i++){
|
|
fprintf(output, "%02x", this->h.eth_smac[i]);
|
|
if(i<5)
|
|
fprintf(output, ":");
|
|
}
|
|
|
|
fprintf(output, " > ");
|
|
|
|
for(int i=0; i<6; i++){
|
|
fprintf(output, "%02x", this->h.eth_dmac[i]);
|
|
if(i<5)
|
|
fprintf(output, ":");
|
|
}
|
|
|
|
if(detail>=PRINT_DETAIL_MED)
|
|
fprintf(output, " Type=%04x", this->getEtherType());
|
|
|
|
fprintf(output, "]");
|
|
|
|
if(this->next!=NULL){
|
|
print_separator(output, detail);
|
|
next->print(output, detail);
|
|
}
|
|
return OP_SUCCESS;
|
|
} /* End of print() */
|
|
|
|
|
|
/******************************************************************************/
|
|
/* PROTOCOL-SPECIFIC METHODS */
|
|
/******************************************************************************/
|
|
|
|
/** Sets Source MAC address
|
|
* @warning Supplied buffer must contain at least 6 bytes */
|
|
int EthernetHeader::setSrcMAC(const u8 *m){
|
|
if(m==NULL)
|
|
netutil_fatal("EthernetHeader::setSrcMAC(u8*): NULL value supplied ");
|
|
memcpy(h.eth_smac, m, 6);
|
|
return OP_SUCCESS;
|
|
} /* End of setSrcMAC() */
|
|
|
|
|
|
/** Returns source port in HOST byte order
|
|
* @warning Returned pointer points directly to a Class internal buffer. If
|
|
* contents are changed, the instance of the class will be affected. */
|
|
const u8* EthernetHeader::getSrcMAC() const {
|
|
return this->h.eth_smac;
|
|
} /* End of getSrcMAC() */
|
|
|
|
|
|
/** Sets Destination MAC address
|
|
* @warning Supplied buffer must contain at least 6 bytes */
|
|
int EthernetHeader::setDstMAC(u8 *m){
|
|
if(m==NULL)
|
|
netutil_fatal("EthernetHeader::setDstMAC(u8 *): NULL value supplied ");
|
|
memcpy(h.eth_dmac, m, 6);
|
|
return OP_SUCCESS;
|
|
} /* End of setDstMAC() */
|
|
|
|
|
|
|
|
/** Returns destination port in HOST byte order */
|
|
const u8 *EthernetHeader::getDstMAC() const {
|
|
return this->h.eth_dmac;
|
|
} /* End of getDstMAC() */
|
|
|
|
|
|
int EthernetHeader::setEtherType(u16 val){
|
|
h.eth_type=htons(val);
|
|
return OP_SUCCESS;
|
|
} /* End of setEtherType() */
|
|
|
|
|
|
/** Returns destination port in HOST byte order */
|
|
const u16 EthernetHeader::getEtherType() const {
|
|
return ntohs(this->h.eth_type);
|
|
} /* End of getEtherType() */
|
|
|