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/cvs/gvpe/src/protocol.h
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Comparing gvpe/src/protocol.h (file contents):
Revision 1.5 by pcg, Fri Mar 21 23:17:01 2003 UTC vs.
Revision 1.13 by pcg, Wed Apr 2 03:06:22 2003 UTC

… …
18 18
19#ifndef VPE_PROTOCOL_H__ 19#ifndef VPE_PROTOCOL_H__
20#define VPE_PROTOCOL_H__ 20#define VPE_PROTOCOL_H__
21 21
22#include <netinet/in.h> 22#include <netinet/in.h>
23#include <netinet/ip.h> // for tos etc.
24 23
25#include <openssl/evp.h> 24#include <openssl/evp.h>
26#include <openssl/rsa.h> 25#include <openssl/rsa.h>
27 26
28#include "conf.h" 27#include "conf.h"
29#include "iom.h" 28#include "iom.h"
30#include "util.h" 29#include "util.h"
30#include "sockinfo.h"
31#include "device.h" 31#include "device.h"
32 32#include "connection.h"
33/* Protocol version. Different versions are incompatible,
34 incompatible version have different protocols.
35 */
36
37#define PROTOCOL_MAJOR 2
38#define PROTOCOL_MINOR 0
39
40struct vpn;
41struct vpn_packet;
42
43typedef u8 rsachallenge[RSA_KEYLEN - RSA_OVERHEAD]; // challenge data
44typedef u8 rsaencrdata[RSA_KEYLEN]; // encrypted challenge
45
46struct crypto_ctx;
47
48// a very simple fifo pkt-queue
49class pkt_queue
50 {
51 tap_packet *queue[QUEUEDEPTH];
52 int i, j;
53
54 public:
55
56 void put (tap_packet *p);
57 tap_packet *get ();
58
59 pkt_queue ();
60 ~pkt_queue ();
61 };
62
63enum auth_subtype { AUTH_INIT, AUTH_INITREPLY, AUTH_REPLY };
64
65struct connection
66 {
67 conf_node *conf;
68 struct vpn *vpn;
69
70 SOCKADDR sa;
71 int retry_cnt;
72
73 tstamp last_activity; // time of last packet received
74
75 u32 oseqno;
76 sliding_window iseqno;
77
78 pkt_queue queue;
79
80 crypto_ctx *octx, *ictx;
81
82 enum conf_node::connectmode connectmode;
83
84 void reset_dstaddr ();
85
86 void shutdown ();
87 void reset_connection ();
88 void establish_connection_cb (tstamp &ts); time_watcher establish_connection;
89 void rekey_cb (tstamp &ts); time_watcher rekey; // next rekying (actually current reset + reestablishing)
90 void keepalive_cb (tstamp &ts); time_watcher keepalive; // next keepalive probe
91
92 void send_auth (auth_subtype subtype, SOCKADDR *sa, rsachallenge *k = 0);
93 void send_reset (SOCKADDR *dsa);
94 void send_ping (SOCKADDR *dss, u8 pong = 0);
95 void send_data_packet (tap_packet *pkt, bool broadcast = false);
96 void inject_data_packet (tap_packet *pkt, bool broadcast = false);
97 void connect_request (int id);
98
99 void recv_vpn_packet (vpn_packet *pkt, SOCKADDR *rsa);
100
101 void script_node ();
102 const char *script_node_up ();
103 const char *script_node_down ();
104
105 connection(struct vpn *vpn_);
106 ~connection ();
107 };
108 33
109struct vpn 34struct vpn
110 { 35 {
111 int socket_fd; 36 int udpv4_fd;
37 int ipv4_fd;
38
112 int events; 39 int events;
113 40
114 enum { 41 enum {
115 EVENT_RECONNECT = 1, 42 EVENT_RECONNECT = 1,
116 EVENT_SHUTDOWN = 2, 43 EVENT_SHUTDOWN = 2,
… …
123 typedef vector<connection *> conns_vector; 50 typedef vector<connection *> conns_vector;
124 conns_vector conns; 51 conns_vector conns;
125 52
126 connection *find_router (); 53 connection *find_router ();
127 54
128 void send_vpn_packet (vpn_packet *pkt, SOCKADDR *sa, int tos = IPTOS_RELIABILITY);
129 void reconnect_all (); 55 void reconnect_all ();
130 void shutdown_all (); 56 void shutdown_all ();
131 void connect_request (int id); 57 void connect_request (int id);
132 58
133 void vpn_ev (short revents); io_watcher vpn_ev_watcher; 59 void tap_ev (short revents); io_watcher tap_ev_watcher;
60 void ipv4_ev (short revents); io_watcher ipv4_ev_watcher;
134 void udp_ev (short revents); io_watcher udp_ev_watcher; 61 void udpv4_ev (short revents); io_watcher udpv4_ev_watcher;
62
63 void recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi);
64
65 void send_udpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos = IPTOS_RELIABILITY);
66 void send_ipv4_packet (vpn_packet *pkt, const sockinfo &si, int tos = IPTOS_RELIABILITY);
135 67
136 vpn (); 68 vpn ();
137 ~vpn (); 69 ~vpn ();
138 70
139 int setup (); 71 int setup ();
140 72
73 void dump_status ();
74
141 const char *script_if_up (); 75 const char *script_if_up (int);
142 }; 76 };
143 77
144#endif 78#endif
145 79

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