/*************************************************************************** * HeaderTemplates.cc -- * * * ***********************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. * * * ***************************************************************************/ #include "HeaderTemplates.h" /****************************************************************************** * GENERIC HeaderTemplate CLASS * ******************************************************************************/ HeaderTemplate::HeaderTemplate(){ } /* End of HeaderTemplate constructor */ HeaderTemplate::~HeaderTemplate(){ } /* End of HeaderTemplate destructor */ /****************************************************************************** * EthernetHeaderTemplate Class * ******************************************************************************/ EthernetHeaderTemplate::EthernetHeaderTemplate(){ this->reset(); } /* End of EthernetHeaderTemplate constructor */ EthernetHeaderTemplate::~EthernetHeaderTemplate(){ } /* End of EthernetHeaderTemplate destructor */ /* This method returns the object to its default state. The reset() method is * very important because it initializes Ethernet header fields with default values * that will affect the final packets that Nping produces. However, note that * the values set here may be overridden by NpingOps if necessary. */ void EthernetHeaderTemplate::reset(){ // "src", "dst" and "type" are not set on purpose. } /* End of reset() */ /****************************************************************************** * IPv4PHeaderTemplate Class * ******************************************************************************/ ARPHeaderTemplate::ARPHeaderTemplate(){ this->reset(); } /* End of ARPHeaderTemplate constructor */ ARPHeaderTemplate::~ARPHeaderTemplate(){ } /* End of ARPHeaderTemplate destructor */ /* This method returns the object to its default state. The reset() method is * very important because it initializes ARP header fields with default values * that will affect the final packets that Nping produces. However, note that * the values set here may be overridden by NpingOps if necessary (when the * user supplies his own values or when we have special restrictions) */ void ARPHeaderTemplate::reset(){ this->htype.setConstant(DEFAULT_ARP_HTYPE); this->ptype.setConstant(DEFAULT_ARP_PTYPE); this->haddrlen.setConstant(DEFAULT_ARP_HADDRLEN); this->paddrlen.setConstant(DEFAULT_ARP_PADDRLEN); this->op.setConstant(DEFAULT_ARP_OP); /* Hardware and protocol addresses are left unset on purpose. */ } /* End of reset() */ /****************************************************************************** * IPv4PHeaderTemplate Class * ******************************************************************************/ IPv4HeaderTemplate::IPv4HeaderTemplate(){ this->reset(); } /* End of IPv4HeaderTemplate constructor */ IPv4HeaderTemplate::~IPv4HeaderTemplate(){ } /* End of IPv4HeaderTemplate destructor */ /* This method returns the object to its default state. The reset() method is * very important because it initializes IPv4 header fields with default values * that will affect the final packets that Nping produces. However, note that * the values set here may be overridden by NpingOps if necessary (when the * user supplies his own values or when we have special restrictions) */ void IPv4HeaderTemplate::reset(){ /* Type of Service */ this->tos.setConstant(DEFAULT_IPv4_TOS); /* Identification */ this->id.setBehavior(FIELD_TYPE_INCREMENTAL); this->id.setStartValue(get_random_u16()); /* Flags */ this->rf.setConstant(DEFAULT_IPv4_FLAG_RF); this->df.setConstant(DEFAULT_IPv4_FLAG_DF); this->mf.setConstant(DEFAULT_IPv4_FLAG_MF); /* Fragment Offset */ this->off.setConstant(DEFAULT_IPv4_FRAG_OFFSET); /* Time To Live */ this->ttl.setConstant(DEFAULT_IPv4_TTL); // this->nh.setConstant() The Next header is unset on purpose. } /* End of reset() */ /****************************************************************************** * IPv6HeaderTemplate Class * ******************************************************************************/ IPv6HeaderTemplate::IPv6HeaderTemplate(){ this->reset(); } /* End of IPv6PHeaderTemplate constructor */ IPv6HeaderTemplate::~IPv6HeaderTemplate(){ } /* End of IPv6PHeaderTemplate destructor */ /* This method returns the object to its default state. The reset() method is * very important because it initializes IPv4 header fields with default values * that will affect the final packets that Nping produces. However, note that * the values set here may be overridden by NpingOps if necessary (when the * user supplies his own values or when we have special restrictions) */ void IPv6HeaderTemplate::reset(){ /* Traffic Class */ this->tclass.setConstant(DEFAULT_IPv6_TCLASS); /* Flow Label */ this->flow.setConstant((get_random_u32()%1048575)+1); /* Time To Live */ this->hlim.setConstant(DEFAULT_IPv6_HOPLIMIT); // this->nh.setConstant() The Next header is unset on purpose. } /* End of reset() */ /****************************************************************************** * TCPHeaderTemplate Class * ******************************************************************************/ TCPHeaderTemplate::TCPHeaderTemplate(){ this->reset(); } /* End of TCPHeaderTemplate constructor */ TCPHeaderTemplate::~TCPHeaderTemplate(){ } /* End of TCPHeaderTemplate destructor */ /* This method returns the object to its default state. The reset() method is * very important because it initializes TCP header fields with default values * that will affect the final packets that Nping produces. However, note that * the values set here may be overridden by NpingOps if necessary (when the * user supplies his own values or when we have special restrictions, like * in Echo Client Mode, where the source port cannot be the same as the * NEP port number in use */ void TCPHeaderTemplate::reset(){ /* Source Port. We chose an incremental random port number, higher than 1024. */ this->sport.setBehavior(FIELD_TYPE_INCREMENTAL); u16 start_port=1024 + (get_random_u16()%(65535-1024))/2; this->sport.setStartValue(start_port); this->sport.setMaxIncrements(65535-start_port); /* Destination Port */ this->dport.setBehavior(FIELD_TYPE_CONSTANT); this->dport.setStartValue(DEFAULT_TCP_TARGET_PORT); /* Sequence number */ this->seq.setBehavior(FIELD_TYPE_INCREMENTAL); this->seq.setStartValue( get_random_u32() ); /* Acknowledgement number */ this->ack.setBehavior(FIELD_TYPE_CONSTANT); this->ack.setStartValue(DEFAULT_TCP_ACKNOWLEDGMENT); /* Offset (TCP header length in 32-bit words) */ this->off.setBehavior(FIELD_TYPE_CONSTANT); this->off.setStartValue(DEFAULT_TCP_OFFSET); /* Flags */ this->flags.setBehavior(FIELD_TYPE_CONSTANT); this->flags.setStartValue(DEFAULT_TCP_FLAGS); /* Window size */ this->win.setBehavior(FIELD_TYPE_CONSTANT); this->win.setStartValue(DEFAULT_TCP_WINDOW_SIZE); /* Checksum */ // We don't initialize the checksum so is_set() returns false /* Urgent pointer */ this->urp.setBehavior(FIELD_TYPE_CONSTANT); this->urp.setStartValue(DEFAULT_TCP_URGENT_POINTER); } /* End of reset() */ /****************************************************************************** * UDPHeaderTemplate Class * ******************************************************************************/ UDPHeaderTemplate::UDPHeaderTemplate(){ this->reset(); } /* End of UDPHeaderTemplate constructor */ UDPHeaderTemplate::~UDPHeaderTemplate(){ } /* End of UDPHeaderTemplate destructor */ /* This method returns the object to its default state. The reset() method is * very important because it initializes UDP header fields with default values * that will affect the final packets that Nping produces. However, note that * the values set here may be overridden by NpingOps if necessary. */ void UDPHeaderTemplate::reset(){ /* Source Port. We chose an incremental random port number, higher than 1024. */ this->sport.setConstant(DEFAULT_UDP_SOURCE_PORT); /* Destination Port */ this->dport.setConstant(DEFAULT_UDP_TARGET_PORT); } /* End of reset() */ /****************************************************************************** * ICMPv4HeaderTemplate Class * ******************************************************************************/ ICMPv4HeaderTemplate::ICMPv4HeaderTemplate(){ this->reset(); } /* End of ICMPv4HeaderTemplate constructor */ ICMPv4HeaderTemplate::~ICMPv4HeaderTemplate(){ } /* End of ICMPv4HeaderTemplate destructor */ /* This method returns the object to its default state. The reset() method is * very important because it initializes ICMP header fields with default values * that will affect the final packets that Nping produces. However, note that * the values set here may be overridden by NpingOps if necessary */ void ICMPv4HeaderTemplate::reset(){ this->type.setConstant(DEFAULT_ICMPv4_TYPE); this->code.setConstant(DEFAULT_ICMPv4_CODE); this->id.setConstant(get_random_u16()); this->seq.setBehavior(FIELD_TYPE_INCREMENTAL); this->seq.setStartValue(0); } /* End of reset() */ /****************************************************************************** * ICMPv6HeaderTemplate Class * ******************************************************************************/ ICMPv6HeaderTemplate::ICMPv6HeaderTemplate(){ this->reset(); } /* End of ICMPv6HeaderTemplate constructor */ ICMPv6HeaderTemplate::~ICMPv6HeaderTemplate(){ } /* End of ICMPv6HeaderTemplate destructor */ /* This method returns the object to its default state. The reset() method is * very important because it initializes ICMP header fields with default values * that will affect the final packets that Nping produces. However, note that * the values set here may be overridden by NpingOps if necessary */ void ICMPv6HeaderTemplate::reset(){ this->type.setConstant(DEFAULT_ICMPv6_TYPE); this->code.setConstant(DEFAULT_ICMPv6_CODE); this->id.setConstant(get_random_u16()); this->seq.setBehavior(FIELD_TYPE_INCREMENTAL); this->seq.setStartValue(0); /* Router Renumbering */ this->renum_seq.setBehavior(FIELD_TYPE_INCREMENTAL); this->renum_seq.setStartValue(0); this->renum_flags.setConstant(ICMPv6_RR_FLAG_T|ICMPv6_RR_FLAG_R); this->renum_mp_op_code.setConstant(ICMPv6_RR_MP_OPCODE_ADD); this->renum_mp_op_length.setConstant(4*1+3); this->renum_mp_match_length.setConstant(64); this->renum_mp_min_length.setConstant(64); this->renum_mp_max_length.setConstant(80); this->renum_mp_max_length.setConstant(80); this->renum_up_keep_length.setConstant(64); this->renum_up_use_length.setConstant(64); this->renum_up_valid_lifetime.setConstant(64); } /* End of reset() */