/*************************************************************************** * opensshlib.h -- header file containing generic structure that is being * * passed along all hooked OpenSSH functions to track Ncrack state for the * * SSH module. * * * ***********************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. 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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. * * * ***************************************************************************/ #ifndef OPENSSHLIB_H #define OPENSSHLIB_H #include "buffer.h" #include "sshbuf.h" #include "cipher.h" #include "ssh1.h" #ifdef __cplusplus extern "C" { #endif struct kex; struct newkeys; typedef struct packet_state { u_int32_t seqnr; u_int32_t packets; u_int64_t blocks; u_int64_t bytes; } packet_state; /* * Every module invocation has its own Ncrack_state struct which holds every * bit of information needed to keep track of things. Most of the variables * found inside this object were usually static/global variables in the original * OpenSSH codebase. */ typedef struct ncrack_ssh_state { struct kex *kex; DH *dh; /* Session key information for Encryption and MAC */ struct newkeys *newkeys[2]; struct newkeys *current_keys[2]; char *client_version_string; char *server_version_string; /* Encryption context for receiving data. This is only used for decryption. */ struct sshcipher_ctx receive_context; /* Encryption context for sending data. This is only used for encryption. */ struct sshcipher_ctx send_context; /* ***** IO Buffers ****** */ //Buffer ncrack_buf; /* Buffer for raw input data from the socket. */ struct sshbuf *input; /* Buffer for raw output data going to the socket. */ struct sshbuf *output; /* Buffer for the incoming packet currently being processed. */ struct sshbuf *incoming_packet; /* Buffer for the partial outgoing packet being constructed. */ struct sshbuf *outgoing_packet; u_int64_t max_blocks_in; u_int64_t max_blocks_out; packet_state p_read; packet_state p_send; /* Used in packet_read_poll2() */ u_int packlen; int compat20; /* boolean -> true if SSHv2 compatible */ /* Compatibility mode for different bugs of various older sshd * versions. It holds a list of these bug types in a binary OR list */ int datafellows; int compat; int type; /* type of packet returned */ u_char extra_pad; /* extra padding that might be needed */ /* * Reason that this connection was ended. It might be that we got a * disconnnect packet from the server due to many authentication attempts * or some other exotic reason. */ char *disc_reason; u_int packet_length; // TODO check this int rekeying; u_int32_t rekey_limit; u_int32_t rekey_interval; time_t rekey_time; int cipher_warning_done; int keep_alive_timeouts; int dispatch_skip_packets; u_int packet_discard; struct sshmac *packet_discard_mac; char *prev_user; } ncrack_ssh_state; #ifdef __cplusplus } /* End of 'extern "C"' */ #endif #endif