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Comparing gvpe/src/connection.h (file contents):
Revision 1.27 by pcg, Mon Dec 5 12:58:09 2005 UTC vs.
Revision 1.31 by pcg, Thu Aug 7 17:30:28 2008 UTC

… …
33struct vpn; 33struct vpn;
34 34
35// called after HUP etc. to (re-)initialize global data structures 35// called after HUP etc. to (re-)initialize global data structures
36void connection_init (); 36void connection_init ();
37 37
38struct rsaid { 38struct rsaid
39{
39 u8 id[RSA_IDLEN]; // the challenge id 40 u8 id[RSA_IDLEN]; // the challenge id
40}; 41};
41 42
42typedef rsaclear rsachallenge; // challenge data; 43typedef rsaclear rsachallenge; // challenge data;
43typedef rsacrypt rsaencrdata; // encrypted challenge 44typedef rsacrypt rsaencrdata; // encrypted challenge
… …
59 60
60 void hmac_gen (crypto_ctx * ctx); 61 void hmac_gen (crypto_ctx * ctx);
61}; 62};
62 63
63struct vpn_packet : hmac_packet 64struct vpn_packet : hmac_packet
64 { 65{
65 enum ptype 66 enum ptype
66 { 67 {
67 PT_RESET = 0, 68 PT_RESET = 0,
68 PT_DATA_UNCOMPRESSED, 69 PT_DATA_UNCOMPRESSED,
69 PT_DATA_COMPRESSED, 70 PT_DATA_COMPRESSED,
70 PT_PING, PT_PONG, // wasting namespace space? ;) 71 PT_PING, PT_PONG, // wasting namespace space? ;)
71 PT_AUTH_REQ, // authentification request 72 PT_AUTH_REQ, // authentification request
72 PT_AUTH_RES, // authentification response 73 PT_AUTH_RES, // authentification response
73 PT_CONNECT_REQ, // want other node to contact me 74 PT_CONNECT_REQ, // want other node to contact me
74 PT_CONNECT_INFO, // request connection to some node 75 PT_CONNECT_INFO, // request connection to some node
75 PT_DATA_BRIDGED, // uncompressed packet with foreign mac pot. larger than path mtu 76 PT_DATA_BRIDGED, // uncompressed packet with foreign mac pot. larger than path mtu (NYI)
76 PT_MAX 77 PT_MAX
77 };
78
79 u8 type;
80 u8 srcdst, src1, dst1;
81
82 void set_hdr (ptype type_, unsigned int dst);
83
84 unsigned int src () const
85 {
86 return src1 | ((srcdst >> 4) << 8);
87 }
88
89 unsigned int dst () const
90 {
91 return dst1 | ((srcdst & 0xf) << 8);
92 }
93
94 ptype typ () const
95 {
96 return (ptype) type;
97 }
98 }; 78 };
79
80 u8 type;
81 u8 srcdst, src1, dst1;
82
83 void set_hdr (ptype type_, unsigned int dst);
84
85 unsigned int src () const
86 {
87 return src1 | ((srcdst >> 4) << 8);
88 }
89
90 unsigned int dst () const
91 {
92 return dst1 | ((srcdst & 0xf) << 8);
93 }
94
95 ptype typ () const
96 {
97 return (ptype) type;
98 }
99};
99 100
100//////////////////////////////////////////////////////////////////////////////////////// 101////////////////////////////////////////////////////////////////////////////////////////
101 102
102// a very simple fifo pkt-queue 103// a very simple fifo pkt-queue
103class pkt_queue 104class pkt_queue
104 { 105{
105 net_packet *queue[QUEUEDEPTH];
106 int i, j; 106 int i, j;
107 int max_queue;
108 double max_ttl;
107 109
110 struct pkt {
111 ev_tstamp tstamp;
112 net_packet *pkt;
113 } *queue;
114
115 void expire_cb (ev::timer &w, int revents); ev::timer expire;
116
108 public: 117public:
109 118
110 void put (net_packet *p); 119 void put (net_packet *p);
111 net_packet *get (); 120 net_packet *get ();
112 121
113 pkt_queue (); 122 bool empty ()
123 {
124 return i == j;
125 }
126
127 pkt_queue (double max_ttl, int max_queue);
114 ~pkt_queue (); 128 ~pkt_queue ();
115 }; 129};
116 130
117enum 131enum
118 { 132{
119 FEATURE_COMPRESSION = 0x01, 133 FEATURE_COMPRESSION = 0x01,
120 FEATURE_ROHC = 0x02, 134 FEATURE_ROHC = 0x02,
121 FEATURE_BRIDGING = 0x04, 135 FEATURE_BRIDGING = 0x04,
122 }; 136};
123 137
124struct connection 138struct connection
125 { 139{
126 conf_node *conf; 140 conf_node *conf;
127 struct vpn *vpn; 141 struct vpn *vpn;
128 142
129 sockinfo si; // the current(!) destination ip to send packets to 143 sockinfo si; // the current(!) destination ip to send packets to
130 int retry_cnt; 144 int retry_cnt;
131 145
132 tstamp last_activity; // time of last packet received 146 tstamp last_activity; // time of last packet received
147 tstamp last_establish_attempt;
133 148
134 u32 oseqno; 149 u32 oseqno;
135 sliding_window iseqno; 150 sliding_window iseqno;
136 151
137 u8 protocol; 152 u8 protocol;
138 u8 features; 153 u8 features;
139 154
140 pkt_queue data_queue, vpn_queue; 155 pkt_queue data_queue, vpn_queue;
141 156
142 crypto_ctx *octx, *ictx; 157 crypto_ctx *octx, *ictx;
143 158
144#if ENABLE_DNS 159#if ENABLE_DNS
145 struct dns_connection *dns; 160 struct dns_connection *dns;
146 161
147 void dnsv4_reset_connection (); 162 void dnsv4_reset_connection ();
148#endif 163#endif
149 164
150 enum conf_node::connectmode connectmode; 165 enum conf_node::connectmode connectmode;
151 u8 prot_minor; // minor number of other side 166 u8 prot_minor; // minor number of other side
152 167
153 void reset_si (); 168 void reset_si ();
154 const sockinfo &forward_si (const sockinfo &si) const; 169 const sockinfo &forward_si (const sockinfo &si) const;
155 170
156 void shutdown (); 171 void shutdown ();
157 void connection_established (); 172 void connection_established ();
158 void reset_connection (); 173 void reset_connection ();
159 174
160 void establish_connection_cb (time_watcher &w); time_watcher establish_connection; 175 void establish_connection_cb (ev::timer &w, int revents); ev::timer establish_connection;
161 void rekey_cb (time_watcher &w); time_watcher rekey; // next rekying (actually current reset + reestablishing) 176 void rekey_cb (ev::timer &w, int revents); ev::timer rekey; // next rekying (actually current reset + reestablishing)
162 void keepalive_cb (time_watcher &w); time_watcher keepalive; // next keepalive probe 177 void keepalive_cb (ev::timer &w, int revents); ev::timer keepalive; // next keepalive probe
163 178
164 void send_connect_request (int id); 179 void send_connect_request (int id);
165 void send_auth_request (const sockinfo &si, bool initiate); 180 void send_auth_request (const sockinfo &si, bool initiate);
166 void send_auth_response (const sockinfo &si, const rsaid &id, const rsachallenge &chg); 181 void send_auth_response (const sockinfo &si, const rsaid &id, const rsachallenge &chg);
167 void send_connect_info (int rid, const sockinfo &rsi, u8 rprotocols); 182 void send_connect_info (int rid, const sockinfo &rsi, u8 rprotocols);
168 void send_reset (const sockinfo &dsi); 183 void send_reset (const sockinfo &dsi);
169 void send_ping (const sockinfo &dsi, u8 pong = 0); 184 void send_ping (const sockinfo &dsi, u8 pong = 0);
170 void send_data_packet (tap_packet *pkt); 185 void send_data_packet (tap_packet *pkt);
171 186
187 void post_inject_queue ();
172 void inject_data_packet (tap_packet *pkt, bool broadcast = false); 188 void inject_data_packet (tap_packet *pkt);
173 void inject_vpn_packet (vpn_packet *pkt, int tos = 0); // for forwarding 189 void inject_vpn_packet (vpn_packet *pkt, int tos = 0); // for forwarding
174 190
175 void recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi); 191 void recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi);
176 void send_vpn_packet (vpn_packet *pkt, const sockinfo &si, int tos = 0); 192 void send_vpn_packet (vpn_packet *pkt, const sockinfo &si, int tos = 0);
177 193
178 void script_init_env (const char *ext); 194 void script_init_env (const char *ext);
179 void script_init_connect_env (); 195 void script_init_connect_env ();
180 const char *script_node_up (); 196 const char *script_node_up ();
181 const char *script_node_down (); 197 const char *script_node_down ();
182 198
183 void dump_status (); 199 void dump_status ();
184 200
185 connection (struct vpn *vpn, conf_node *conf); 201 connection (struct vpn *vpn, conf_node *conf);
186 ~connection (); 202 ~connection ();
187 }; 203};
188 204
189#endif 205#endif
190 206

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