X-Git-Url: https://git.distorted.org.uk/u/mdw/putty/blobdiff_plain/6971bbe7b9416836100a7df98bd2f5e09d5e0697..811453cbc32f1f0f14cfef25f54eabf2e3b28bd9:/network.h

diff --git a/network.h b/network.h
index 245391d1..ad45547d 100644
--- a/network.h
+++ b/network.h
@@ -13,6 +13,13 @@
 #ifndef PUTTY_NETWORK_H
 #define PUTTY_NETWORK_H
 
+#ifndef DONE_TYPEDEFS
+#define DONE_TYPEDEFS
+typedef struct config_tag Config;
+typedef struct backend_tag Backend;
+typedef struct terminal_tag Terminal;
+#endif
+
 typedef struct SockAddr_tag *SockAddr;
 /* pay attention to levels of indirection */
 typedef struct socket_function_table **Socket;
@@ -24,19 +31,19 @@ struct socket_function_table {
     /* if p is NULL, it doesn't change the plug */
     /* but it does return the one it's using */
     void (*close) (Socket s);
-    int (*write) (Socket s, char *data, int len);
-    int (*write_oob) (Socket s, char *data, int len);
+    int (*write) (Socket s, const char *data, int len);
+    int (*write_oob) (Socket s, const char *data, int len);
     void (*flush) (Socket s);
     void (*set_private_ptr) (Socket s, void *ptr);
     void *(*get_private_ptr) (Socket s);
     void (*set_frozen) (Socket s, int is_frozen);
     /* ignored by tcp, but vital for ssl */
-    char *(*socket_error) (Socket s);
+    const char *(*socket_error) (Socket s);
 };
 
 struct plug_function_table {
     int (*closing)
-     (Plug p, char *error_msg, int error_code, int calling_back);
+     (Plug p, const char *error_msg, int error_code, int calling_back);
     /* error_msg is NULL iff it is not an error (ie it closed normally) */
     /* calling_back != 0 iff there is a Plug function */
     /* currently running (would cure the fixme in try_send()) */
@@ -66,16 +73,24 @@ struct plug_function_table {
 /* proxy indirection layer */
 Socket new_connection(SockAddr addr, char *hostname,
 		      int port, int privport,
-		      int oobinline, int nodelay, Plug plug);
-Socket new_listener(int port, Plug plug, int local_host_only);
+		      int oobinline, int nodelay, Plug plug,
+		      const Config *cfg);
+Socket new_listener(char *srcaddr, int port, Plug plug, int local_host_only,
+		    const Config *cfg);
+SockAddr name_lookup(char *host, int port, char **canonicalname,
+		     const Config *cfg);
 
 /* socket functions */
 
 void sk_init(void);		       /* called once at program startup */
 void sk_cleanup(void);		       /* called just before program exit */
 
-SockAddr sk_namelookup(char *host, char **canonicalname);
+SockAddr sk_namelookup(const char *host, char **canonicalname);
+SockAddr sk_nonamelookup(const char *host);
 void sk_getaddr(SockAddr addr, char *buf, int buflen);
+int sk_hostname_is_local(char *name);
+int sk_address_is_local(SockAddr addr);
+enum { ADDRTYPE_IPV4, ADDRTYPE_IPV6, ADDRTYPE_NAME };
 int sk_addrtype(SockAddr addr);
 void sk_addrcopy(SockAddr addr, char *buf);
 void sk_addr_free(SockAddr addr);
@@ -83,7 +98,7 @@ void sk_addr_free(SockAddr addr);
 Socket sk_new(SockAddr addr, int port, int privport, int oobinline,
 	      int nodelay, Plug p);
 
-Socket sk_newlistener(int port, Plug plug, int local_host_only);
+Socket sk_newlistener(char *srcaddr, int port, Plug plug, int local_host_only);
 
 Socket sk_register(void *sock, Plug plug);
 
@@ -115,7 +130,7 @@ Socket sk_register(void *sock, Plug plug);
  * if there's a problem. These functions extract an error message,
  * or return NULL if there's no problem.
  */
-char *sk_addr_error(SockAddr addr);
+const char *sk_addr_error(SockAddr addr);
 #define sk_socket_error(s) (((*s)->socket_error) (s))
 
 /*
@@ -143,6 +158,15 @@ char *sk_addr_error(SockAddr addr);
  */
 void net_pending_errors(void);
 
+/*
+ * Simple wrapper on getservbyname(), needed by ssh.c. Returns the
+ * port number, in host byte order (suitable for printf and so on).
+ * Returns 0 on failure. Any platform not supporting getservbyname
+ * can just return 0 - this function is not required to handle
+ * numeric port specifications.
+ */
+int net_service_lookup(char *service);
+
 /********** SSL stuff **********/
 
 /*