X-Git-Url: https://git.distorted.org.uk/u/mdw/putty/blobdiff_plain/6f1e7b78af0f9c4c502609392f62771cf2528d8f..79bf227ba7ba02e32ac710621b672e2789f9ef50:/raw.c

diff --git a/raw.c b/raw.c
index 0e6c1410..8c1f97fd 100644
--- a/raw.c
+++ b/raw.c
@@ -29,7 +29,7 @@ static void c_write(Raw raw, char *buf, int len)
     sk_set_frozen(raw->s, backlog > RAW_MAX_BACKLOG);
 }
 
-static int raw_closing(Plug plug, char *error_msg, int error_code,
+static int raw_closing(Plug plug, const char *error_msg, int error_code,
 		       int calling_back)
 {
     Raw raw = (Raw) plug;
@@ -41,7 +41,7 @@ static int raw_closing(Plug plug, char *error_msg, int error_code,
     if (error_msg) {
 	/* A socket error has occurred. */
 	logevent(raw->frontend, error_msg);
-	connection_fatal("%s", error_msg);
+	connection_fatal(raw->frontend, "%s", error_msg);
     }				       /* Otherwise, the remote side closed the connection normally. */
     return 0;
 }
@@ -67,8 +67,10 @@ static void raw_sent(Plug plug, int bufsize)
  * Also places the canonical host name into `realhost'. It must be
  * freed by the caller.
  */
-static char *raw_init(void *frontend_handle, void **backend_handle,
-		      char *host, int port, char **realhost, int nodelay)
+static const char *raw_init(void *frontend_handle, void **backend_handle,
+			    Config *cfg,
+			    char *host, int port, char **realhost, int nodelay,
+			    int keepalive)
 {
     static const struct plug_function_table fn_table = {
 	raw_closing,
@@ -76,10 +78,10 @@ static char *raw_init(void *frontend_handle, void **backend_handle,
 	raw_sent
     };
     SockAddr addr;
-    char *err;
+    const char *err;
     Raw raw;
 
-    raw = smalloc(sizeof(*raw));
+    raw = snew(struct raw_backend_data);
     raw->fn = &fn_table;
     raw->s = NULL;
     *backend_handle = raw;
@@ -95,9 +97,11 @@ static char *raw_init(void *frontend_handle, void **backend_handle,
 	logevent(raw->frontend, buf);
 	sfree(buf);
     }
-    addr = name_lookup(host, port, realhost);
-    if ((err = sk_addr_error(addr)) != NULL)
+    addr = name_lookup(host, port, realhost, cfg);
+    if ((err = sk_addr_error(addr)) != NULL) {
+	sk_addr_free(addr);
 	return err;
+    }
 
     if (port < 0)
 	port = 23;		       /* default telnet port */
@@ -112,15 +116,30 @@ static char *raw_init(void *frontend_handle, void **backend_handle,
 	logevent(raw->frontend, buf);
 	sfree(buf);
     }
-    raw->s = new_connection(addr, *realhost, port, 0, 1, nodelay, (Plug) raw);
+    raw->s = new_connection(addr, *realhost, port, 0, 1, nodelay, keepalive,
+			    (Plug) raw, cfg);
     if ((err = sk_socket_error(raw->s)) != NULL)
 	return err;
 
-    sk_addr_free(addr);
-
     return NULL;
 }
 
+static void raw_free(void *handle)
+{
+    Raw raw = (Raw) handle;
+
+    if (raw->s)
+	sk_close(raw->s);
+    sfree(raw);
+}
+
+/*
+ * Stub routine (we don't have any need to reconfigure this backend).
+ */
+static void raw_reconfig(void *handle, Config *cfg)
+{
+}
+
 /*
  * Called to send data down the raw connection.
  */
@@ -163,6 +182,15 @@ static void raw_special(void *handle, Telnet_Special code)
     return;
 }
 
+/*
+ * Return a list of the special codes that make sense in this
+ * protocol.
+ */
+static const struct telnet_special *raw_get_specials(void *handle)
+{
+    return NULL;
+}
+
 static Socket raw_socket(void *handle)
 {
     Raw raw = (Raw) handle;
@@ -199,16 +227,23 @@ static void raw_provide_logctx(void *handle, void *logctx)
 
 static int raw_exitcode(void *handle)
 {
-    /* Exit codes are a meaningless concept in the Raw protocol */
-    return 0;
+    Raw raw = (Raw) handle;
+    if (raw->s != NULL)
+        return -1;                     /* still connected */
+    else
+        /* Exit codes are a meaningless concept in the Raw protocol */
+        return 0;
 }
 
 Backend raw_backend = {
     raw_init,
+    raw_free,
+    raw_reconfig,
     raw_send,
     raw_sendbuffer,
     raw_size,
     raw_special,
+    raw_get_specials,
     raw_socket,
     raw_exitcode,
     raw_sendok,