+void logevent(void *, const char *);
+
+/* Allocate and register a new channel for port forwarding */
+void *new_sock_channel(void *handle, Socket s);
+void ssh_send_port_open(void *channel, char *hostname, int port, char *org);
+
+/* Exports from portfwd.c */
+extern const char *pfd_newconnect(Socket * s, char *hostname, int port,
+ void *c, const Config *cfg,
+ int addressfamily);
+/* desthost == NULL indicates dynamic (SOCKS) port forwarding */
+extern const char *pfd_addforward(char *desthost, int destport, char *srcaddr,
+ int port, void *backhandle,
+ const Config *cfg, void **sockdata,
+ int address_family);
+extern void pfd_close(Socket s);
+extern void pfd_terminate(void *sockdata);
+extern int pfd_send(Socket s, char *data, int len);
+extern void pfd_confirm(Socket s);
+extern void pfd_unthrottle(Socket s);
+extern void pfd_override_throttle(Socket s, int enable);
+
+/* Exports from x11fwd.c */
+extern const char *x11_init(Socket *, char *, void *, void *, const char *,
+ int, const Config *);
+extern void x11_close(Socket);
+extern int x11_send(Socket, char *, int);
+extern void *x11_invent_auth(char *, int, char *, int, int);
+extern void x11_free_auth(void *);
+extern void x11_unthrottle(Socket s);
+extern void x11_override_throttle(Socket s, int enable);
+extern int x11_get_screen_number(char *display);
+void x11_get_real_auth(void *authv, char *display);
+char *x11_display(const char *display);
+
+/* Platform-dependent X11 functions */
+extern void platform_get_x11_auth(char *display, int *proto,
+ unsigned char *data, int *datalen);
+extern const char platform_x11_best_transport[];
+/* best X11 hostname for this platform if none specified */
+SockAddr platform_get_x11_unix_address(int displaynum, char **canonicalname);
+/* make up a SockAddr naming the address for displaynum */
+char *platform_get_x_display(void);
+/* allocated local X display string, if any */