X-Git-Url: https://git.distorted.org.uk/u/mdw/putty/blobdiff_plain/18e62ad8969d5b38cfdc28c943f05c59ea7fba5d..39934deb5202149f98198c111a35c21cb4d0d0f8:/unix/uxplink.c

diff --git a/unix/uxplink.c b/unix/uxplink.c
index c9b50759..6f17b5a2 100644
--- a/unix/uxplink.c
+++ b/unix/uxplink.c
@@ -73,8 +73,6 @@ static Config cfg;
  */
 char *platform_default_s(const char *name)
 {
-    if (!strcmp(name, "X11Display"))
-	return dupstr(getenv("DISPLAY"));
     if (!strcmp(name, "TermType"))
 	return dupstr(getenv("TERM"));
     if (!strcmp(name, "UserName"))
@@ -212,7 +210,7 @@ static void usage(void)
     printf("  -v        show verbose messages\n");
     printf("  -load sessname  Load settings from saved session\n");
     printf("  -ssh -telnet -rlogin -raw\n");
-    printf("            force use of a particular protocol (default SSH)\n");
+    printf("            force use of a particular protocol\n");
     printf("  -P port   connect to specified port\n");
     printf("  -l user   connect with specified username\n");
     printf("  -m file   read remote command(s) from file\n");
@@ -232,6 +230,7 @@ static void usage(void)
     printf("  -C        enable compression\n");
     printf("  -i key    private key file for authentication\n");
     printf("  -s        remote command is an SSH subsystem (SSH-2 only)\n");
+    printf("  -N        don't start a shell/command (SSH-2 only)\n");
     exit(1);
 }
 
@@ -253,6 +252,7 @@ int main(int argc, char **argv)
     int errors;
     int use_subsystem = 0;
     void *ldisc, *logctx;
+    long now;
 
     ssh_get_line = console_get_line;
 
@@ -355,7 +355,7 @@ int main(int argc, char **argv)
 		    strncpy(cfg.host, q, sizeof(cfg.host) - 1);
 		    cfg.host[sizeof(cfg.host) - 1] = '\0';
 		} else {
-		    char *r;
+		    char *r, *user, *host;
 		    /*
 		     * Before we process the [user@]host string, we
 		     * first check for the presence of a protocol
@@ -379,28 +379,32 @@ int main(int argc, char **argv)
 		    }
 
 		    /*
-		     * Three cases. Either (a) there's a nonzero
-		     * length string followed by an @, in which
-		     * case that's user and the remainder is host.
-		     * Or (b) there's only one string, not counting
-		     * a potential initial @, and it exists in the
-		     * saved-sessions database. Or (c) only one
-		     * string and it _doesn't_ exist in the
-		     * database.
+		     * A nonzero length string followed by an @ is treated
+		     * as a username. (We discount an _initial_ @.) The
+		     * rest of the string (or the whole string if no @)
+		     * is treated as a session name and/or hostname.
 		     */
 		    r = strrchr(p, '@');
 		    if (r == p)
 			p++, r = NULL; /* discount initial @ */
-		    if (r == NULL) {
-			/*
-			 * One string.
-			 */
+		    if (r) {
+			*r++ = '\0';
+			user = p, host = r;
+		    } else {
+			user = NULL, host = p;
+		    }
+
+		    /*
+		     * Now attempt to load a saved session with the
+		     * same name as the hostname.
+		     */
+		    {
 			Config cfg2;
-			do_defaults(p, &cfg2);
+			do_defaults(host, &cfg2);
 			if (loaded_session || cfg2.host[0] == '\0') {
 			    /* No settings for this host; use defaults */
 			    /* (or session was already loaded with -load) */
-			    strncpy(cfg.host, p, sizeof(cfg.host) - 1);
+			    strncpy(cfg.host, host, sizeof(cfg.host) - 1);
 			    cfg.host[sizeof(cfg.host) - 1] = '\0';
 			    cfg.port = default_port;
 			} else {
@@ -408,14 +412,15 @@ int main(int argc, char **argv)
 			    /* Ick: patch up internal pointer after copy */
 			    cfg.remote_cmd_ptr = cfg.remote_cmd;
 			}
-		    } else {
-			*r++ = '\0';
-			strncpy(cfg.username, p, sizeof(cfg.username) - 1);
+		    }
+
+		    if (user) {
+			/* Patch in specified username. */
+			strncpy(cfg.username, user,
+				sizeof(cfg.username) - 1);
 			cfg.username[sizeof(cfg.username) - 1] = '\0';
-			strncpy(cfg.host, r, sizeof(cfg.host) - 1);
-			cfg.host[sizeof(cfg.host) - 1] = '\0';
-			cfg.port = default_port;
 		    }
+
 		}
 	    } else {
 		char *command;
@@ -466,7 +471,7 @@ int main(int argc, char **argv)
 
     /* See if host is of the form user@host */
     if (cfg.host[0] != '\0') {
-	char *atsign = strchr(cfg.host, '@');
+	char *atsign = strrchr(cfg.host, '@');
 	/* Make sure we're not overflowing the user field */
 	if (atsign) {
 	    if (atsign - cfg.host < sizeof cfg.username) {
@@ -580,6 +585,7 @@ int main(int argc, char **argv)
     atexit(cleanup_termios);
     ldisc_update(NULL, 1, 1);
     sending = FALSE;
+    now = GETTICKCOUNT();
 
     while (1) {
 	fd_set rset, wset, xset;
@@ -640,7 +646,23 @@ int main(int argc, char **argv)
 	}
 
 	do {
-	    ret = select(maxfd, &rset, &wset, &xset, NULL);
+	    long next, ticks;
+	    struct timeval tv, *ptv;
+
+	    if (run_timers(now, &next)) {
+		ticks = next - GETTICKCOUNT();
+		if (ticks < 0) ticks = 0;   /* just in case */
+		tv.tv_sec = ticks / 1000;
+		tv.tv_usec = ticks % 1000 * 1000;
+		ptv = &tv;
+	    } else {
+		ptv = NULL;
+	    }
+	    ret = select(maxfd, &rset, &wset, &xset, ptv);
+	    if (ret == 0)
+		now = next;
+	    else
+		now = GETTICKCOUNT();
 	} while (ret < 0 && errno == EINTR);
 
 	if (ret < 0) {