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Comparing gvpe/src/connection.h (file contents):
Revision 1.1 by pcg, Wed Apr 2 03:06:22 2003 UTC vs.
Revision 1.28 by pcg, Sat Nov 10 05:14:22 2007 UTC

1/* 1/*
2 connection.h -- header for connection.C 2 connection.h -- header for connection.C
3 Copyright (C) 2003-2005 Marc Lehmann <gvpe@schmorp.de>
3 4
5 This file is part of GVPE.
6
4 This program is free software; you can redistribute it and/or modify 7 GVPE is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by 8 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or 9 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version. 10 (at your option) any later version.
8 11
9 This program is distributed in the hope that it will be useful, 12 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details. 15 GNU General Public License for more details.
13 16
14 You should have received a copy of the GNU General Public License 17 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software 18 along with gvpe; if not, write to the Free Software
16 Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 19 Foundation, Inc. 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17*/ 20*/
18 21
19#ifndef VPE_CONNECTION_H__ 22#ifndef GVPE_CONNECTION_H__
20#define VPE_CONNECTION_H__ 23#define GVPE_CONNECTION_H__
21 24
22#include <netinet/ip.h> // for tos etc.
23
24#include <openssl/rand.h>
25#include <openssl/hmac.h> 25#include <openssl/hmac.h>
26#include <openssl/evp.h>
27#include <openssl/rsa.h>
28#include <openssl/err.h>
29 26
30#include "global.h" 27#include "global.h"
31#include "conf.h" 28#include "conf.h"
32#include "sockinfo.h" 29#include "sockinfo.h"
33#include "util.h" 30#include "util.h"
… …
40 37
41struct rsaid { 38struct rsaid {
42 u8 id[RSA_IDLEN]; // the challenge id 39 u8 id[RSA_IDLEN]; // the challenge id
43}; 40};
44 41
45typedef u8 rsachallenge[RSA_KEYLEN - RSA_OVERHEAD]; // challenge data; 42typedef rsaclear rsachallenge; // challenge data;
46typedef u8 rsaencrdata[RSA_KEYLEN]; // encrypted challenge 43typedef rsacrypt rsaencrdata; // encrypted challenge
47typedef u8 rsaresponse[RSA_RESLEN]; // the encrypted ripemd160 hash 44typedef u8 rsaresponse[RSA_RESLEN]; // the encrypted ripemd160 hash
48 45
49//////////////////////////////////////////////////////////////////////////////////////// 46////////////////////////////////////////////////////////////////////////////////////////
50 47
51struct crypto_ctx; 48struct crypto_ctx;
52 49
53struct hmac_packet:net_packet 50struct hmac_packet : net_packet
54{ 51{
55 u8 hmac[HMACLENGTH]; // each and every packet has a hmac field, but that is not (yet) checked everywhere 52 u8 hmac[HMACLENGTH]; // each and every packet has a hmac field, but that is not (yet) checked everywhere
56 53
57 void hmac_set (crypto_ctx * ctx); 54 void hmac_set (crypto_ctx * ctx);
58 bool hmac_chk (crypto_ctx * ctx); 55 bool hmac_chk (crypto_ctx * ctx);
… …
71 PT_DATA_UNCOMPRESSED, 68 PT_DATA_UNCOMPRESSED,
72 PT_DATA_COMPRESSED, 69 PT_DATA_COMPRESSED,
73 PT_PING, PT_PONG, // wasting namespace space? ;) 70 PT_PING, PT_PONG, // wasting namespace space? ;)
74 PT_AUTH_REQ, // authentification request 71 PT_AUTH_REQ, // authentification request
75 PT_AUTH_RES, // authentification response 72 PT_AUTH_RES, // authentification response
76 PT_CONNECT_REQ, // want other host to contact me 73 PT_CONNECT_REQ, // want other node to contact me
77 PT_CONNECT_INFO, // request connection to some node 74 PT_CONNECT_INFO, // request connection to some node
75 PT_DATA_BRIDGED, // uncompressed packet with foreign mac pot. larger than path mtu
78 PT_MAX 76 PT_MAX
79 }; 77 };
80 78
81 u8 type; 79 u8 type;
82 u8 srcdst, src1, dst1; 80 u8 srcdst, src1, dst1;
83 81
84 void set_hdr (ptype type, unsigned int dst); 82 void set_hdr (ptype type_, unsigned int dst);
85 83
86 unsigned int src () const 84 unsigned int src () const
87 { 85 {
88 return src1 | ((srcdst >> 4) << 8); 86 return src1 | ((srcdst >> 4) << 8);
89 } 87 }
… …
102//////////////////////////////////////////////////////////////////////////////////////// 100////////////////////////////////////////////////////////////////////////////////////////
103 101
104// a very simple fifo pkt-queue 102// a very simple fifo pkt-queue
105class pkt_queue 103class pkt_queue
106 { 104 {
107 tap_packet *queue[QUEUEDEPTH]; 105 net_packet *queue[QUEUEDEPTH];
108 int i, j; 106 int i, j;
109 107
110 public: 108 public:
111 109
112 void put (tap_packet *p); 110 void put (net_packet *p);
113 tap_packet *get (); 111 net_packet *get ();
114 112
115 pkt_queue (); 113 pkt_queue ();
116 ~pkt_queue (); 114 ~pkt_queue ();
115 };
116
117enum
118 {
119 FEATURE_COMPRESSION = 0x01,
120 FEATURE_ROHC = 0x02,
121 FEATURE_BRIDGING = 0x04,
117 }; 122 };
118 123
119struct connection 124struct connection
120 { 125 {
121 conf_node *conf; 126 conf_node *conf;
… …
128 133
129 u32 oseqno; 134 u32 oseqno;
130 sliding_window iseqno; 135 sliding_window iseqno;
131 136
132 u8 protocol; 137 u8 protocol;
138 u8 features;
133 139
134 pkt_queue queue; 140 pkt_queue data_queue, vpn_queue;
135 141
136 crypto_ctx *octx, *ictx; 142 crypto_ctx *octx, *ictx;
143
144#if ENABLE_DNS
145 struct dns_connection *dns;
146
147 void dnsv4_reset_connection ();
148#endif
137 149
138 enum conf_node::connectmode connectmode; 150 enum conf_node::connectmode connectmode;
139 u8 prot_minor; // minor number of other side 151 u8 prot_minor; // minor number of other side
140 152
141 void reset_dstaddr (); 153 void reset_si ();
154 const sockinfo &forward_si (const sockinfo &si) const;
142 155
143 void shutdown (); 156 void shutdown ();
157 void connection_established ();
144 void reset_connection (); 158 void reset_connection ();
145 void establish_connection_cb (tstamp &ts); time_watcher establish_connection;
146 void rekey_cb (tstamp &ts); time_watcher rekey; // next rekying (actually current reset + reestablishing)
147 void keepalive_cb (tstamp &ts); time_watcher keepalive; // next keepalive probe
148 159
160 void establish_connection_cb (ev::timer &w, int revents); ev::timer establish_connection;
161 void rekey_cb (ev::timer &w, int revents); ev::timer rekey; // next rekying (actually current reset + reestablishing)
162 void keepalive_cb (ev::timer &w, int revents); ev::timer keepalive; // next keepalive probe
163
164 void send_connect_request (int id);
149 void send_auth_request (const sockinfo &si, bool initiate); 165 void send_auth_request (const sockinfo &si, bool initiate);
150 void send_auth_response (const sockinfo &si, const rsaid &id, const rsachallenge &chg); 166 void send_auth_response (const sockinfo &si, const rsaid &id, const rsachallenge &chg);
151 void send_connect_info (int rid, const sockinfo &rsi, u8 rprotocols); 167 void send_connect_info (int rid, const sockinfo &rsi, u8 rprotocols);
152 void send_reset (const sockinfo &dsi); 168 void send_reset (const sockinfo &dsi);
153 void send_ping (const sockinfo &dsi, u8 pong = 0); 169 void send_ping (const sockinfo &dsi, u8 pong = 0);
154 void send_data_packet (tap_packet *pkt, bool broadcast = false); 170 void send_data_packet (tap_packet *pkt);
171
155 void inject_data_packet (tap_packet *pkt, bool broadcast = false); 172 void inject_data_packet (tap_packet *pkt, bool broadcast = false);
156 void connect_request (int id); 173 void inject_vpn_packet (vpn_packet *pkt, int tos = 0); // for forwarding
157 174
158 void send_vpn_packet (vpn_packet *pkt, const sockinfo &si, int tos = IPTOS_RELIABILITY);
159 void recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi); 175 void recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi);
176 void send_vpn_packet (vpn_packet *pkt, const sockinfo &si, int tos = 0);
160 177
178 void script_init_env (const char *ext);
161 void script_node (); 179 void script_init_connect_env ();
162 const char *script_node_up (int); 180 const char *script_node_up ();
163 const char *script_node_down (int); 181 const char *script_node_down ();
164 182
165 void dump_status (); 183 void dump_status ();
166 184
167 connection(struct vpn *vpn_); 185 connection (struct vpn *vpn, conf_node *conf);
168 ~connection (); 186 ~connection ();
169 }; 187 };
170 188
171#endif 189#endif
172 190

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