ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/gvpe/src/protocol.h
(Generate patch)

Comparing gvpe/src/protocol.h (file contents):
Revision 1.2 by pcg, Sat Mar 8 10:48:41 2003 UTC vs.
Revision 1.9 by pcg, Wed Mar 26 14:39:52 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.
23 24
24#include <openssl/evp.h> 25#include <openssl/evp.h>
25#include <openssl/rsa.h> 26#include <openssl/rsa.h>
26 27
27#include "conf.h" 28#include "conf.h"
29#include "iom.h"
28#include "util.h" 30#include "util.h"
29#include "device.h" 31#include "device.h"
30 32
31/* Protocol version. Different versions are incompatible, 33/* Protocol version. Different major versions are incompatible,
32 incompatible version have different protocols. 34 * different minor versions probably are compatible ;)
33 */ 35 */
34 36
35#define PROTOCOL_MAJOR 2 37#define PROTOCOL_MAJOR 0
36#define PROTOCOL_MINOR 0 38#define PROTOCOL_MINOR 0
37 39
38struct vpn; 40struct vpn;
39struct vpn_packet; 41struct vpn_packet;
40 42
43struct rsaid {
44 u8 id[RSA_IDLEN]; // the challenge id
45};
46
41typedef u8 rsachallenge[RSA_KEYLEN - RSA_OVERHEAD]; // challenge data 47typedef u8 rsachallenge[RSA_KEYLEN - RSA_OVERHEAD]; // challenge data;
42typedef u8 rsaencrdata[RSA_KEYLEN]; // encrypted challenge 48typedef u8 rsaencrdata[RSA_KEYLEN]; // encrypted challenge
49typedef u8 rsaresponse[RSA_RESLEN]; // the encrypted ripemd160 hash
43 50
44struct crypto_ctx; 51struct crypto_ctx;
45 52
46enum auth_subtype { AUTH_INIT, AUTH_INITREPLY, AUTH_REPLY }; 53// a very simple fifo pkt-queue
54class pkt_queue
55 {
56 tap_packet *queue[QUEUEDEPTH];
57 int i, j;
58
59 public:
60
61 void put (tap_packet *p);
62 tap_packet *get ();
63
64 pkt_queue ();
65 ~pkt_queue ();
66 };
47 67
48struct connection 68struct connection
49 { 69 {
50 conf_node *conf; 70 conf_node *conf;
51 struct vpn *vpn; 71 struct vpn *vpn;
52 72
53 SOCKADDR sa; 73 SOCKADDR sa; // the current(!) destination ip to send packets to
54 int retry_cnt; 74 int retry_cnt;
55 75
56 time_t next_retry; // next connection retry
57 time_t next_rekey; // next rekying (actually current reset + reestablishing)
58 time_t last_activity; // time of last packet received 76 tstamp last_activity; // time of last packet received
59 77
60 u32 oseqno; 78 u32 oseqno;
61 u32 iseqno; 79 sliding_window iseqno;
62 u32 ismask; // bitmask with set bits for each received seqno (input seen mask)
63 80
64 pkt_queue queue; 81 pkt_queue queue;
65 82
66 crypto_ctx *octx, *ictx; 83 crypto_ctx *octx, *ictx;
67 84
68 enum conf_node::connectmode connectmode; 85 enum conf_node::connectmode connectmode;
86 u8 prot_minor; // minor number of other side
69 87
70 void reset_dstaddr (); 88 void reset_dstaddr ();
71 89
72 void shutdown (); 90 void shutdown ();
73 void reset_connection (); 91 void reset_connection ();
74 void establish_connection (); 92 void establish_connection_cb (tstamp &ts); time_watcher establish_connection;
75 void rekey (); 93 void rekey_cb (tstamp &ts); time_watcher rekey; // next rekying (actually current reset + reestablishing)
94 void keepalive_cb (tstamp &ts); time_watcher keepalive; // next keepalive probe
76 95
77 void send_auth (auth_subtype subtype, SOCKADDR *sa, rsachallenge *k = 0); 96 void send_auth_request (SOCKADDR *sa, bool initiate);
97 void send_auth_response (SOCKADDR *sa, const rsaid &id, const rsachallenge &chg);
78 void send_reset (SOCKADDR *dsa); 98 void send_reset (SOCKADDR *dsa);
79 void send_ping (SOCKADDR *dss, u8 pong = 0); 99 void send_ping (SOCKADDR *dss, u8 pong = 0);
80 void send_data_packet (tap_packet *pkt, bool broadcast = false); 100 void send_data_packet (tap_packet *pkt, bool broadcast = false);
81 void inject_data_packet (tap_packet *pkt, bool broadcast = false); 101 void inject_data_packet (tap_packet *pkt, bool broadcast = false);
82 void connect_request (int id); 102 void connect_request (int id);
83 103
84 void recv_vpn_packet (vpn_packet *pkt, SOCKADDR *rsa); 104 void recv_vpn_packet (vpn_packet *pkt, SOCKADDR *rsa);
85 105
86 void timer (); 106 void script_node ();
107 const char *script_node_up (int);
108 const char *script_node_down (int);
87 109
88 connection(struct vpn *vpn_) 110 connection(struct vpn *vpn_);
89 : vpn(vpn_)
90 {
91 octx = ictx = 0;
92 retry_cnt = 0;
93 connectmode = conf_node::C_ALWAYS; // initial setting
94 reset_connection ();
95 }
96
97 ~connection () 111 ~connection ();
98 {
99 shutdown ();
100 }
101
102 void script_node ();
103 const char *script_node_up ();
104 const char *script_node_down ();
105 }; 112 };
106 113
107struct vpn 114struct vpn
108 { 115 {
109 int socket_fd; 116 int socket_fd;
110 int events; 117 int events;
111 118
112 tap_device *tap;
113
114 enum { 119 enum {
115 EVENT_RECONNECT = 1, 120 EVENT_RECONNECT = 1,
116 EVENT_SHUTDOWN = 2, 121 EVENT_SHUTDOWN = 2,
117 }; 122 };
123
124 void event_cb (tstamp &ts); time_watcher event;
125
126 tap_device *tap;
118 127
119 typedef vector<connection *> conns_vector; 128 typedef vector<connection *> conns_vector;
120 conns_vector conns; 129 conns_vector conns;
121 130
122 connection *find_router (); 131 connection *find_router ();
123 132
124 void send_vpn_packet (vpn_packet *pkt, SOCKADDR *sa); 133 void send_vpn_packet (vpn_packet *pkt, SOCKADDR *sa, int tos = IPTOS_RELIABILITY);
125 void reconnect_all (); 134 void reconnect_all ();
126 void shutdown_all (); 135 void shutdown_all ();
127 void connect_request (int id); 136 void connect_request (int id);
137
138 void vpn_ev (short revents); io_watcher vpn_ev_watcher;
139 void udp_ev (short revents); io_watcher udp_ev_watcher;
128 140
129 vpn (); 141 vpn ();
130 ~vpn (); 142 ~vpn ();
131 143
132 int setup (); 144 int setup ();
133 void main_loop ();
134 145
135 const char *script_if_up (); 146 const char *script_if_up (int);
136 }; 147 };
137 148
138#endif 149#endif
139 150

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines