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

Comparing gvpe/src/connection.h (file contents):
Revision 1.23 by pcg, Wed Mar 23 21:55:39 2005 UTC vs.
Revision 1.31 by pcg, Thu Aug 7 17:30:28 2008 UTC

… …
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details. 15 GNU General Public License for more details.
16 16
17 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
18 along with gvpe; if not, write to the Free Software 18 along with gvpe; if not, write to the Free Software
19 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
20*/ 20*/
21 21
22#ifndef GVPE_CONNECTION_H__ 22#ifndef GVPE_CONNECTION_H__
23#define GVPE_CONNECTION_H__ 23#define GVPE_CONNECTION_H__
24 24
… …
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 host 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
76 PT_DATA_BRIDGED, // uncompressed packet with foreign mac pot. larger than path mtu (NYI)
75 PT_MAX 77 PT_MAX
76 };
77
78 u8 type;
79 u8 srcdst, src1, dst1;
80
81 void set_hdr (ptype type_, unsigned int dst);
82
83 unsigned int src () const
84 {
85 return src1 | ((srcdst >> 4) << 8);
86 }
87
88 unsigned int dst () const
89 {
90 return dst1 | ((srcdst & 0xf) << 8);
91 }
92
93 ptype typ () const
94 {
95 return (ptype) type;
96 }
97 }; 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};
98 100
99//////////////////////////////////////////////////////////////////////////////////////// 101////////////////////////////////////////////////////////////////////////////////////////
100 102
101// a very simple fifo pkt-queue 103// a very simple fifo pkt-queue
102class pkt_queue 104class pkt_queue
103 { 105{
104 net_packet *queue[QUEUEDEPTH];
105 int i, j; 106 int i, j;
107 int max_queue;
108 double max_ttl;
106 109
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
107 public: 117public:
108 118
109 void put (net_packet *p); 119 void put (net_packet *p);
110 net_packet *get (); 120 net_packet *get ();
111 121
112 pkt_queue (); 122 bool empty ()
123 {
124 return i == j;
125 }
126
127 pkt_queue (double max_ttl, int max_queue);
113 ~pkt_queue (); 128 ~pkt_queue ();
114 }; 129};
115 130
116enum 131enum
117 { 132{
118 FEATURE_COMPRESSION = 0x01, 133 FEATURE_COMPRESSION = 0x01,
119 FEATURE_ROHC = 0x02, 134 FEATURE_ROHC = 0x02,
120 }; 135 FEATURE_BRIDGING = 0x04,
136};
121 137
122struct connection 138struct connection
123 { 139{
124 conf_node *conf; 140 conf_node *conf;
125 struct vpn *vpn; 141 struct vpn *vpn;
126 142
127 sockinfo si; // the current(!) destination ip to send packets to 143 sockinfo si; // the current(!) destination ip to send packets to
128 int retry_cnt; 144 int retry_cnt;
129 145
130 tstamp last_activity; // time of last packet received 146 tstamp last_activity; // time of last packet received
147 tstamp last_establish_attempt;
131 148
132 u32 oseqno; 149 u32 oseqno;
133 sliding_window iseqno; 150 sliding_window iseqno;
134 151
135 u8 protocol; 152 u8 protocol;
136 u8 features; 153 u8 features;
137 154
138 pkt_queue data_queue, vpn_queue; 155 pkt_queue data_queue, vpn_queue;
139 156
140 crypto_ctx *octx, *ictx; 157 crypto_ctx *octx, *ictx;
141 158
142#if ENABLE_DNS 159#if ENABLE_DNS
143 struct dns_connection *dns; 160 struct dns_connection *dns;
144 161
145 void dnsv4_reset_connection (); 162 void dnsv4_reset_connection ();
146#endif 163#endif
147 164
148 enum conf_node::connectmode connectmode; 165 enum conf_node::connectmode connectmode;
149 u8 prot_minor; // minor number of other side 166 u8 prot_minor; // minor number of other side
150 167
151 void reset_si (); 168 void reset_si ();
152 const sockinfo &forward_si (const sockinfo &si) const; 169 const sockinfo &forward_si (const sockinfo &si) const;
153 170
154 void shutdown (); 171 void shutdown ();
155 void connection_established (); 172 void connection_established ();
156 void reset_connection (); 173 void reset_connection ();
157 174
158 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;
159 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)
160 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
161 178
162 void send_connect_request (int id); 179 void send_connect_request (int id);
163 void send_auth_request (const sockinfo &si, bool initiate); 180 void send_auth_request (const sockinfo &si, bool initiate);
164 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);
165 void send_connect_info (int rid, const sockinfo &rsi, u8 rprotocols); 182 void send_connect_info (int rid, const sockinfo &rsi, u8 rprotocols);
166 void send_reset (const sockinfo &dsi); 183 void send_reset (const sockinfo &dsi);
167 void send_ping (const sockinfo &dsi, u8 pong = 0); 184 void send_ping (const sockinfo &dsi, u8 pong = 0);
168 void send_data_packet (tap_packet *pkt); 185 void send_data_packet (tap_packet *pkt);
169 186
187 void post_inject_queue ();
170 void inject_data_packet (tap_packet *pkt, bool broadcast = false); 188 void inject_data_packet (tap_packet *pkt);
171 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
172 190
173 void recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi); 191 void recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi);
174 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);
175 193
194 void script_init_env (const char *ext);
176 void script_init_env (); 195 void script_init_connect_env ();
177 const char *script_node_up (); 196 const char *script_node_up ();
178 const char *script_node_down (); 197 const char *script_node_down ();
179 198
180 void dump_status (); 199 void dump_status ();
181 200
182 connection (struct vpn *vpn, conf_node *conf); 201 connection (struct vpn *vpn, conf_node *conf);
183 ~connection (); 202 ~connection ();
184 }; 203};
185 204
186#endif 205#endif
187 206

Diff Legend

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