PenTest/nmap
1
0
Fork 0
mirror of https://github.com/nmap/nmap.git synced 2025-12-06 04:31:29 +00:00
Code Issues Projects Releases Wiki Activity

Merge from /nmap-exp/luis/nmap-os6.

Browse Source 
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.
This commit is contained in:
david
2011-09-19 18:31:46 +00:00
parent f41753c4e9
commit 9bf2ec3884
93 changed files with 24665 additions and 222 deletions
Download Patch File Download Diff File Expand all files Collapse all files

243
libnetutil/FragmentHeader.cc Normal file
View File

@@ -0,0 +1,243 @@
/***************************************************************************
* FragmentHeader.cc -- The FragmentHeader Class represents an IPv6 *
* Hop-by-Hop extension header. *
***********************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 "FragmentHeader.h"
#include <assert.h>
/******************************************************************************/
/* CONTRUCTORS, DESTRUCTORS AND INITIALIZATION METHODS */
/******************************************************************************/
FragmentHeader::FragmentHeader() {
this->reset();
} /* End of FragmentHeader constructor */
FragmentHeader::~FragmentHeader() {
} /* End of FragmentHeader destructor */
/** Sets every attribute to its default value */
void FragmentHeader::reset(){
memset(&this->h, 0, sizeof(nping_ipv6_ext_fragment_hdr_t));
this->length=8;
} /* End of reset() */
/******************************************************************************/
/* PacketElement:: OVERWRITTEN METHODS */
/******************************************************************************/
/** @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 *FragmentHeader::getBufferPointer(){
return (u8*)(&this->h);
} /* End of getBufferPointer() */
/** Stores supplied packet in the internal buffer so the information
* can be accessed using the standard get & set methods.
* @warning The FragmentHeader class is able to hold a maximum of
* sizeof(nping_icmpv6_hdr_t) bytes. If the supplied buffer is longer than
* that, only the first 1508 bytes will be stored in the internal buffer.
* @warning Supplied len MUST be at least 8 bytes (min ICMPv6 header length).
* @return OP_SUCCESS on success and OP_FAILURE in case of error */
int FragmentHeader::storeRecvData(const u8 *buf, size_t len){
if(buf==NULL || len<FRAGMENT_HEADER_LEN){
this->length=0;
return OP_FAILURE;
}else{
int stored_len = MIN(FRAGMENT_HEADER_LEN, len);
this->reset(); /* Re-init the object, just in case the caller had used it already */
this->length=stored_len;
memcpy(&(this->h), buf, stored_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 FragmentHeader::protocol_id() const {
return HEADER_TYPE_IPv6_FRAG;
} /* 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 FragmentHeader::validate(){
/* Check the object's length makes sense*/
if(this->length != FRAGMENT_HEADER_LEN){
return OP_FAILURE;
}
/* There is not much to check for here, since header fields may take any
* value. We could certainly check the NextHeader value, but let's leave
* that for the class user. */
return this->length;
} /* 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 FragmentHeader::print(FILE *output, int detail) const {
fprintf(output, "Fragment[%d, %d]", this->h.nh, this->h.id);
// TODO: @todo : Implement this
if(this->next!=NULL){
print_separator(output, detail);
next->print(output, detail);
}
return OP_SUCCESS;
} /* End of print() */
/******************************************************************************/
/* PROTOCOL-SPECIFIC METHODS */
/******************************************************************************/
/** Set Next Header field */
int FragmentHeader::setNextHeader(u8 val){
this->h.nh = val;
return OP_SUCCESS;
} /* End of setNextHeader() */
/** Returns next header id */
u8 FragmentHeader::getNextHeader(){
return this->h.nh;
} /* End of getNextHeader() */
/** Set Offset field */
int FragmentHeader::setOffset(u16 val){
this->h.off_res_flag[0]=(u8)(val >> 8);
this->h.off_res_flag[1]=(u8)((this->h.off_res_flag[1] & 0x7) | (val & ~0x7));
return OP_SUCCESS;
} /* End of setOffset() */
/** Returns fragment offset */
u16 FragmentHeader::getOffset(){
return ((this->h.off_res_flag[0] << 8) + this->h.off_res_flag[1]) & 0xfff8;
} /* End of getOffset() */
/* Sets the "More Fragments" flag. */
int FragmentHeader::setM(bool m_flag){
if(m_flag)
this->h.off_res_flag[1]= (u8)((this->h.off_res_flag[1] & ~0x01) | 0x01);
else
this->h.off_res_flag[1]= (u8)((this->h.off_res_flag[1] & ~0x1));
return OP_SUCCESS;
} /* End of setM() */
/* Returns true if the "More Fragments" flag is set; false otherwise. */
bool FragmentHeader::getM(){
return (this->h.off_res_flag[1] & 0x01);
} /* End of getM() */
/** Set the fragment identifier */
int FragmentHeader::setIdentification(u32 val){
this->h.id=htonl(val);
return OP_SUCCESS;
} /* End of setIdentification() */
/** Returns the fragment identifier*/
u32 FragmentHeader::getIdentification(){
return ntohl(this->h.id);
} /* End of getIdentification.() */