X-Git-Url: https://git.distorted.org.uk/~mdw/sgt/putty/blobdiff_plain/eaf1e20af0294d79a176d2ac3b35fd4143163051..d0370c96527b48387a0fb0fbf5ccc8b9d8cc6458:/telnet.c?ds=sidebyside

diff --git a/telnet.c b/telnet.c
index 50388337..ed685f10 100644
--- a/telnet.c
+++ b/telnet.c
@@ -254,11 +254,10 @@ typedef struct telnet_tag {
 
 #define SB_DELTA 1024
 
-static void c_write1(Telnet telnet, int c)
+static void c_write(Telnet telnet, char *buf, int len)
 {
     int backlog;
-    char cc = (char) c;
-    backlog = from_backend(telnet->frontend, 0, &cc, 1);
+    backlog = from_backend(telnet->frontend, 0, buf, len);
     sk_set_frozen(telnet->s, backlog > TELNET_MAX_BACKLOG);
 }
 
@@ -541,6 +540,16 @@ static void process_subneg(Telnet telnet)
 
 static void do_telnet_read(Telnet telnet, char *buf, int len)
 {
+    char *outbuf = NULL;
+    int outbuflen = 0, outbufsize = 0;
+
+#define ADDTOBUF(c) do { \
+    if (outbuflen >= outbufsize) { \
+	outbufsize = outbuflen + 256; \
+        outbuf = sresize(outbuf, outbufsize, char); \
+    } \
+    outbuf[outbuflen++] = (c); \
+} while (0)
 
     while (len--) {
 	int c = (unsigned char) *buf++;
@@ -554,7 +563,7 @@ static void do_telnet_read(Telnet telnet, char *buf, int len)
 		telnet->state = SEENIAC;
 	    else {
 		if (!telnet->in_synch)
-		    c_write1(telnet, c);
+		    ADDTOBUF(c);
 
 #if 1
 		/* I can't get the F***ing winsock to insert the urgent IAC
@@ -591,7 +600,7 @@ static void do_telnet_read(Telnet telnet, char *buf, int len)
 	    } else {
 		/* ignore everything else; print it if it's IAC */
 		if (c == IAC) {
-		    c_write1(telnet, c);
+		    ADDTOBUF(c);
 		}
 		telnet->state = TOP_LEVEL;
 	    }
@@ -641,6 +650,10 @@ static void do_telnet_read(Telnet telnet, char *buf, int len)
 	    break;
 	}
     }
+
+    if (outbuflen)
+	c_write(telnet, outbuf, outbuflen);
+    sfree(outbuf);
 }
 
 static void telnet_log(Plug plug, int type, SockAddr addr, int port,
@@ -792,6 +805,25 @@ static const char *telnet_init(void *frontend_handle, void **backend_handle,
      */
     update_specials_menu(telnet->frontend);
 
+    /*
+     * loghost overrides realhost, if specified.
+     */
+    if (*telnet->cfg.loghost) {
+	char *colon;
+
+	sfree(*realhost);
+	*realhost = dupstr(telnet->cfg.loghost);
+	colon = strrchr(*realhost, ':');
+	if (colon) {
+	    /*
+	     * FIXME: if we ever update this aspect of ssh.c for
+	     * IPv6 literal management, this should change in line
+	     * with it.
+	     */
+	    *colon++ = '\0';
+	}
+    }
+
     return NULL;
 }
 
@@ -1019,10 +1051,10 @@ static const struct telnet_special *telnet_get_specials(void *handle)
     return specials;
 }
 
-static Socket telnet_socket(void *handle)
+static int telnet_connected(void *handle)
 {
     Telnet telnet = (Telnet) handle;
-    return telnet->s;
+    return telnet->s != NULL;
 }
 
 static int telnet_sendok(void *handle)
@@ -1085,7 +1117,7 @@ Backend telnet_backend = {
     telnet_size,
     telnet_special,
     telnet_get_specials,
-    telnet_socket,
+    telnet_connected,
     telnet_exitcode,
     telnet_sendok,
     telnet_ldisc,
@@ -1093,5 +1125,7 @@ Backend telnet_backend = {
     telnet_provide_logctx,
     telnet_unthrottle,
     telnet_cfg_info,
+    "telnet",
+    PROT_TELNET,
     23
 };