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comparison session.h @ 33:f789045062e6

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Progressing client support
author Matt Johnston <matt@ucc.asn.au>
date Tue, 27 Jul 2004 16:30:46 +0000
parents 0969767bca0d
children e2a1eaa19f22
comparison
equal deleted inserted replaced
32:8fd0cdbb5b1b 33:f789045062e6
43 void session_loop(void(*loophandler)()); 43 void session_loop(void(*loophandler)());
44 void common_session_cleanup(); 44 void common_session_cleanup();
45 void checktimeouts(); 45 void checktimeouts();
46 void session_identification(); 46 void session_identification();
47 47
48 extern void(*session_remoteclosed)();
49 48
50 /* Server */ 49 /* Server */
51 void svr_session(int sock, int childpipe, char *remotehost); 50 void svr_session(int sock, int childpipe, char *remotehost);
52 void svr_dropbear_exit(int exitcode, const char* format, va_list param); 51 void svr_dropbear_exit(int exitcode, const char* format, va_list param);
53 void svr_dropbear_log(int priority, const char* format, va_list param); 52 void svr_dropbear_log(int priority, const char* format, va_list param);
133 unsigned char hash[SHA1_HASH_SIZE]; /* the hash*/ 132 unsigned char hash[SHA1_HASH_SIZE]; /* the hash*/
134 buffer* kexhashbuf; /* session hash buffer calculated from various packets*/ 133 buffer* kexhashbuf; /* session hash buffer calculated from various packets*/
135 buffer* transkexinit; /* the kexinit packet we send should be kept so we 134 buffer* transkexinit; /* the kexinit packet we send should be kept so we
136 can add it to the hash when generating keys */ 135 can add it to the hash when generating keys */
137 136
138 137 algo_type*(*buf_match_algo)(buffer*buf, algo_type localalgos[],
139 unsigned char authdone; /* Indicates when authentication has been 138 int *goodguess); /* The function to use to choose which algorithm
140 completed. This applies to both client and 139 to use from the ones presented by the remote
141 server - in the server it gets set to 1 when 140 side. Is specific to the client/server mode,
142 authentication is successful, in the client it 141 hence the function-pointer callback.*/
143 is set when the server has told us that auth 142
144 succeeded */ 143 void(*remoteclosed)(); /* A callback to handle closure of the
144 remote connection */
145
146
147 struct AuthState authstate; /* Common amongst client and server, since most
148 struct elements are common */
145 149
146 /* Channel related */ 150 /* Channel related */
147 struct Channel ** channels; /* these pointers may be null */ 151 struct Channel ** channels; /* these pointers may be null */
148 unsigned int chansize; /* the number of Channel*s allocated for channels */ 152 unsigned int chansize; /* the number of Channel*s allocated for channels */
149 const struct ChanType **chantypes; /* The valid channel types */ 153 const struct ChanType **chantypes; /* The valid channel types */
163 struct serversession { 167 struct serversession {
164 168
165 /* Server specific options */ 169 /* Server specific options */
166 int childpipe; /* kept open until we successfully authenticate */ 170 int childpipe; /* kept open until we successfully authenticate */
167 /* userauth */ 171 /* userauth */
168 struct AuthState authstate;
169 172
170 struct ChildPid * childpids; /* array of mappings childpid<->channel */ 173 struct ChildPid * childpids; /* array of mappings childpid<->channel */
171 unsigned int childpidsize; 174 unsigned int childpidsize;
172 175
173 }; 176 };
174 177
175 typedef enum { 178 typedef enum {
176 NOTHING, 179 KEX_NOTHING,
177 KEXINIT_RCVD, 180 KEXINIT_RCVD,
178 KEXDH_INIT_SENT, 181 KEXDH_INIT_SENT,
179 KEXDH_REPLY_RCVD, 182 KEXDONE,
183
184 } cli_kex_state;
185
186 typedef enum {
187 STATE_NOTHING,
188 SERVICE_AUTH_REQ_SENT,
189 SERVICE_AUTH_ACCEPT_RCVD,
190 SERVICE_CONN_REQ_SENT,
191 SERVICE_CONN_ACCEPT_RCVD,
192 USERAUTH_METHODS_SENT,
193 USERAUTH_REQ_SENT,
194 USERAUTH_FAIL_RCVD,
180 195
181 } cli_state; 196 } cli_state;
182 197
183 struct clientsession { 198 struct clientsession {
184 199
185 mp_int *dh_e, *dh_x; /* Used during KEX */ 200 mp_int *dh_e, *dh_x; /* Used during KEX */
186 cli_state state; /* Used to progress the KEX/auth/channelsession etc */ 201 cli_kex_state kex_state; /* Used for progressing KEX */
202 cli_state state; /* Used to progress auth/channelsession etc */
187 int something; /* XXX */ 203 int something; /* XXX */
188 unsigned donefirstkex : 1; /* Set when we set sentnewkeys, never reset */ 204 unsigned donefirstkex : 1; /* Set when we set sentnewkeys, never reset */
189 205
190 }; 206 };
191 207