X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=blobdiff_plain;f=unix%2Fuxplink.c;h=ad122e9da4b3959f65a71f3824de1e7f3c86eb77;hb=9dd9860cc84f82309de64c33e2813c6e9dc60749;hp=64c3cabcdacc66afd58e6ec87b9684e14725a863;hpb=b266d671acee34f9305950bfd87054b3b7fcded6;p=PuTTY.git

diff --git a/unix/uxplink.c b/unix/uxplink.c
index 64c3cabc..ad122e9d 100644
--- a/unix/uxplink.c
+++ b/unix/uxplink.c
@@ -533,8 +533,8 @@ void sigwinch(int signum)
  * In Plink our selects are synchronous, so these functions are
  * empty stubs.
  */
-int uxsel_input_add(int fd, int rwx) { return 0; }
-void uxsel_input_remove(int id) { }
+uxsel_id *uxsel_input_add(int fd, int rwx) { return NULL; }
+void uxsel_input_remove(uxsel_id *id) { }
 
 /*
  * Short description of parameters.
@@ -607,6 +607,7 @@ int main(int argc, char **argv)
     int errors;
     int use_subsystem = 0;
     int got_host = FALSE;
+    int just_test_share_exists = FALSE;
     unsigned long now;
     struct winsize size;
 
@@ -685,6 +686,8 @@ int main(int argc, char **argv)
                     --argc;
 		    provide_xrm_string(*++argv);
 		}
+	    } else if (!strcmp(p, "-shareexists")) {
+                just_test_share_exists = TRUE;
 	    } else {
 		fprintf(stderr, "plink: unknown option \"%s\"\n", p);
 		errors = 1;
@@ -959,6 +962,19 @@ int main(int argc, char **argv)
 	!conf_get_str_nthstrkey(conf, CONF_portfwd, 0))
 	conf_set_int(conf, CONF_ssh_simple, TRUE);
 
+    if (just_test_share_exists) {
+        if (!back->test_for_upstream) {
+            fprintf(stderr, "Connection sharing not supported for connection "
+                    "type '%s'\n", back->name);
+            return 1;
+        }
+        if (back->test_for_upstream(conf_get_str(conf, CONF_host),
+                                    conf_get_int(conf, CONF_port), conf))
+            return 0;
+        else
+            return 1;
+    }
+
     /*
      * Start up the connection.
      */