Implement connection sharing between instances of PuTTY.

[PuTTY_svn.git] / ssh.h

diff --git a/ssh.h b/ssh.h
index 675a509ed97aff36f3a720d22aff2fc8cb9b33c3..89f772d661e34bfa1395874ff4418d4b97e91d7a 100644 (file)
--- a/ssh.h
+++ b/ssh.h
@@ -8,12 +8,53 @@
 #include "misc.h"
 
 struct ssh_channel;
+typedef struct ssh_tag *Ssh;
 
 extern int sshfwd_write(struct ssh_channel *c, char *, int);
 extern void sshfwd_write_eof(struct ssh_channel *c);
 extern void sshfwd_unclean_close(struct ssh_channel *c, const char *err);
 extern void sshfwd_unthrottle(struct ssh_channel *c, int bufsize);
 Conf *sshfwd_get_conf(struct ssh_channel *c);
+void sshfwd_x11_sharing_handover(struct ssh_channel *c,
+                                 void *share_cs, void *share_chan,
+                                 const char *peer_addr, int peer_port,
+                                 int endian, int protomajor, int protominor,
+                                 const void *initial_data, int initial_len);
+void sshfwd_x11_is_local(struct ssh_channel *c);
+
+extern Socket ssh_connection_sharing_init(const char *host, int port,
+                                          Conf *conf, Ssh ssh, void **state);
+void share_got_pkt_from_server(void *ctx, int type,
+                               unsigned char *pkt, int pktlen);
+void share_activate(void *state, const char *server_verstring);
+void sharestate_free(void *state);
+int share_ndownstreams(void *state);
+
+void ssh_connshare_log(Ssh ssh, int event, const char *logtext,
+                       const char *ds_err, const char *us_err);
+unsigned ssh_alloc_sharing_channel(Ssh ssh, void *sharing_ctx);
+void ssh_delete_sharing_channel(Ssh ssh, unsigned localid);
+int ssh_alloc_sharing_rportfwd(Ssh ssh, const char *shost, int sport,
+                               void *share_ctx);
+void ssh_sharing_queue_global_request(Ssh ssh, void *share_ctx);
+struct X11FakeAuth *ssh_sharing_add_x11_display(Ssh ssh, int authtype,
+                                                void *share_cs,
+                                                void *share_chan);
+void ssh_sharing_remove_x11_display(Ssh ssh, struct X11FakeAuth *auth);
+void ssh_send_packet_from_downstream(Ssh ssh, unsigned id, int type,
+                                     const void *pkt, int pktlen,
+                                     const char *additional_log_text);
+void ssh_sharing_downstream_connected(Ssh ssh, unsigned id);
+void ssh_sharing_downstream_disconnected(Ssh ssh, unsigned id);
+void ssh_sharing_logf(Ssh ssh, unsigned id, const char *logfmt, ...);
+int ssh_agent_forwarding_permitted(Ssh ssh);
+void share_setup_x11_channel(void *csv, void *chanv,
+                             unsigned upstream_id, unsigned server_id,
+                             unsigned server_currwin, unsigned server_maxpkt,
+                             unsigned client_adjusted_window,
+                             const char *peer_addr, int peer_port, int endian,
+                             int protomajor, int protominor,
+                             const void *initial_data, int initial_len);
 
 /*
  * Useful thing.
@@ -400,6 +441,7 @@ struct X11FakeAuth {
      * What to do with an X connection matching this auth data.
      */
     struct X11Display *disp;
+    void *share_cs, *share_chan;
 };
 void *x11_make_greeting(int endian, int protomajor, int protominor,
                         int auth_proto, const void *auth_data, int auth_len,
@@ -450,6 +492,8 @@ char *platform_get_x_display(void);
  */
 void x11_get_auth_from_authfile(struct X11Display *display,
                                const char *authfilename);
+int x11_identify_auth_proto(const char *proto);
+void *x11_dehexify(const char *hex, int *outlen);
 
 Bignum copybn(Bignum b);
 Bignum bn_power_2(int n);
@@ -590,6 +634,22 @@ int zlib_compress_block(void *, unsigned char *block, int len,
 int zlib_decompress_block(void *, unsigned char *block, int len,
                          unsigned char **outblock, int *outlen);
 
+/*
+ * Connection-sharing API provided by platforms. This function must
+ * either:
+ *  - return SHARE_NONE and do nothing
+ *  - return SHARE_DOWNSTREAM and set *sock to a Socket connected to
+ *    downplug
+ *  - return SHARE_UPSTREAM and set *sock to a Socket connected to
+ *    upplug.
+ */
+enum { SHARE_NONE, SHARE_DOWNSTREAM, SHARE_UPSTREAM };
+int platform_ssh_share(const char *name, Conf *conf,
+                       Plug downplug, Plug upplug, Socket *sock,
+                       char **logtext, char **ds_err, char **us_err,
+                       int can_upstream, int can_downstream);
+void platform_ssh_share_cleanup(const char *name);
+
 /*
  * SSH-1 message type codes.
  */