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rx: add ssh

--- a/sys/src/cmd/rx.c

+++ b/sys/src/cmd/rx.c

@@ -13,6 +13,7 @@

 void	rex(int, char*);

 void	rcpu(int, char*);

 void	tcpexec(int, char*, char*);

+void	sshexec(char*, char*);

 int	call(char *, char*, char*, char**);

 char	*buildargs(char*[]);

 int	send(int);

@@ -70,6 +71,14 @@

 		rex(fd, args);

 	close(fd);

+	/* if there's an ssh port, try that */

+	fd = call("tcp", host, "ssh", &addr);

+	if(fd >= 0){

+		close(fd);

+		sshexec(host, args);

+		/* falls through if no ssh */

+	}

+

 	/* specific attempts */

 	fd = call("tcp", host, "shell", &addr);

 	if(fd >= 0)

@@ -203,8 +212,28 @@

 			error("write error", 0);

 	}

 	sleep(250);

-	postnote(PNPROC, kid, note);/**/

+	postnote(PNPROC, kid, note);

 	exits(0);

+}

+

+void

+sshexec(char *host, char *cmd)

+{

+	char *argv[10];

+	int n;

+

+	n = 0;

+	argv[n++] = "ssh";

+	if(!returns)

+		argv[n++] = "-r";

+	if(ruser){

+		argv[n++] = "-u";

+		argv[n++] = ruser;

+	}

+	argv[n++] = host;

+	argv[n++] = cmd;

+	argv[n] = 0;

+	exec("/bin/ssh", argv);

 }

 int

-- 

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