client->server and server->client file/dir copies minimally working

hkexsh/hkexsh.go

@@ -105,7 +105,7 @@ func parseNonSwitchArgs(a []string, dp string) (user, host, port, path string, i
 func doCopyMode(conn *hkexnet.Conn, remoteDest bool, files string, recurs bool, rec *cmdSpec) (err error, exitStatus int) {
 	if remoteDest {
 		fmt.Println("local files:", files, "remote filepath:", string(rec.cmd))
-		fmt.Fprintf(conn, "copyMode remoteDest ...\n")
+		//fmt.Fprintf(conn, "copyMode remoteDest ...\n")
 
 		var c *exec.Cmd
 
@@ -114,14 +114,17 @@ func doCopyMode(conn *hkexnet.Conn, remoteDest bool, files string, recurs bool,
 		//os.Setenv("TERM", "vt102") // TODO: server or client option?
 
 		cmdName := "/bin/tar"
-		cmdArgs := []string{"-cz", "-f", "/dev/stdout", files}
+		cmdArgs := []string{"-c", "-f", "/dev/stdout", strings.TrimSpace(files)}
 		fmt.Printf("[%v %v]\n", cmdName, cmdArgs)
 		// NOTE the lack of quotes around --xform option's sed expression.
 		// When args are passed in exec() format, no quoting is required
 		// (as this isn't input from a shell) (right? -rlm 20180823)
 		//cmdArgs := []string{"-xvz", "-C", files, `--xform=s#.*/\(.*\)#\1#`}
 		c = exec.Command(cmdName, cmdArgs...)
+		c.Dir, _ = os.Getwd()
+		fmt.Println("[wd:", c.Dir, "]")
 		c.Stdout = conn
+		c.Stderr = os.Stderr
 
 		// Start the command (no pty)
 		err = c.Start() // returns immediately
@@ -147,7 +150,7 @@ func doCopyMode(conn *hkexnet.Conn, remoteDest bool, files string, recurs bool,
 		}
 	} else {
 		fmt.Println("remote filepath:", string(rec.cmd), "local files:", files)
-		fmt.Fprintf(conn, "copyMode localDest ...\n")
+		//fmt.Fprintf(conn, "copyMode localDest ...\n")
 		var c *exec.Cmd
 
 		//os.Clearenv()
@@ -162,7 +165,7 @@ func doCopyMode(conn *hkexnet.Conn, remoteDest bool, files string, recurs bool,
 		//	destPath := strings.Join({os.Getenv("PWD"),files}, os.PathSeparator)
 		//}
 
-		cmdArgs := []string{"-xvz", "-C", destPath}
+		cmdArgs := []string{"-x", "-C", destPath}
 		fmt.Printf("[%v %v]\n", cmdName, cmdArgs)
 		// NOTE the lack of quotes around --xform option's sed expression.
 		// When args are passed in exec() format, no quoting is required

hkexshd/hkexshd.go

@@ -16,6 +16,7 @@ import (
 	"os"
 	"os/exec"
 	"os/user"
+	"path"
 	"runtime"
 	"strings"
 	"sync"
@@ -38,7 +39,7 @@ type cmdSpec struct {
 
 /* -------------------------------------------------------------- */
 // Perform a client->server copy
-func runClientToServerCopyAs(who string, conn hkexnet.Conn, destPath string, chaffing bool) (err error, exitStatus int) {
+func runClientToServerCopyAs(who string, conn hkexnet.Conn, fpath string, chaffing bool) (err error, exitStatus int) {
 	u, _ := user.Lookup(who)
 	var uid, gid uint32
 	fmt.Sscanf(u.Uid, "%d", &uid)
@@ -58,22 +59,42 @@ func runClientToServerCopyAs(who string, conn hkexnet.Conn, destPath string, cha
 
 	var c *exec.Cmd
 	cmdName := "/bin/tar"
+
+	var destDir string
+	if path.IsAbs(fpath) {
+		destDir = fpath
+	} else {
+		destDir = path.Join(u.HomeDir, fpath)
+	}
+	//stat, pe := os.Stat(destDir)
+	//_ = stat
+	//if pe != nil {
+	//	log.Fatal(pe)
+	//	return pe, 252 // ?!
+	//}
+
+	//if stat.IsDir(destBase) {
+	cmdArgs := []string{"-x", "-C", destDir}
+	//} else {
+	//		cmdArgs := []string{"-x",
+
 	// NOTE the lack of quotes around --xform option's sed expression.
 	// When args are passed in exec() format, no quoting is required
 	// (as this isn't input from a shell) (right? -rlm 20180823)
-	cmdArgs := []string{"-xvz", "-C", destPath}
 	//cmdArgs := []string{"-xvz", "-C", destPath, `--xform=s#.*/\(.*\)#\1#`}
 	c = exec.Command(cmdName, cmdArgs...)
 
+	c.Dir = destDir
+
 	//If os.Clearenv() isn't called by server above these will be seen in the
 	//client's session env.
 	//c.Env = []string{"HOME=" + u.HomeDir, "SUDO_GID=", "SUDO_UID=", "SUDO_USER=", "SUDO_COMMAND=", "MAIL=", "LOGNAME="+who}
-	c.Dir = u.HomeDir
+	//c.Dir = u.HomeDir
 	c.SysProcAttr = &syscall.SysProcAttr{}
 	c.SysProcAttr.Credential = &syscall.Credential{Uid: uid, Gid: gid}
 	c.Stdin = conn
-	//c.Stdout = conn
+	c.Stdout = os.Stdout
-	//c.Stderr = conn
+	c.Stderr = os.Stderr
 
 	if chaffing {
 		conn.EnableChaff()
@@ -129,7 +150,7 @@ func runServerToClientCopyAs(who string, conn hkexnet.Conn, srcPath string, chaf
 
 	var c *exec.Cmd
 	cmdName := "/bin/tar"
-	cmdArgs := []string{"-cz", "-f", "-", srcPath}
+	cmdArgs := []string{"-c", "-f", "-", srcPath}
 	c = exec.Command(cmdName, cmdArgs...)
 
 	//If os.Clearenv() isn't called by server above these will be seen in the