- markus@cvs.openbsd.org 2002/11/07 22:35:38

     [scp.c]
     check exit status from ssh, and exit(1) if ssh fails; bug#369;
     binder@arago.de

1 files changed, 26 insertions, 3 deletions

diff --git a/scp.c b/scp.c
index 921ffeedc..05c490f4e 100644
--- a/scp.c
+++ b/scp.c
@@ -75,7 +75,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: scp.c,v 1.91 2002/06/19 00:27:55 deraadt Exp $");
+RCSID("$OpenBSD: scp.c,v 1.92 2002/11/07 22:35:38 markus Exp $");
 
 #include "xmalloc.h"
 #include "atomicio.h"
@@ -125,6 +125,9 @@ int showprogress = 1;
 /* This is the program to execute for the secured connection. ("ssh" or -S) */
 char *ssh_program = _PATH_SSH_PROGRAM;
 
+/* This is used to store the pid of ssh_program */
+pid_t do_cmd_pid;
+
 /*
  * This function executes the given command as the specified user on the
  * given host.  This returns < 0 if execution fails, and >= 0 otherwise. This
@@ -159,7 +162,8 @@ do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout, int argc)
         close(reserved[1]);
 
         /* For a child to execute the command on the remote host using ssh. */
-        if (fork() == 0)  {
+        do_cmd_pid = fork();
+        if (do_cmd_pid == 0) {
                 /* Child. */
                 close(pin[1]);
                 close(pout[0]);
@@ -177,6 +181,8 @@ do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout, int argc)
                 execvp(ssh_program, args.list);
                 perror(ssh_program);
                 exit(1);
+        } else if (do_cmd_pid == -1) {
+                fatal("fork: %s", strerror(errno));
         }
         /* Parent.  Close the other side, and return the local side. */
         close(pin[0]);
@@ -219,7 +225,7 @@ main(argc, argv)
         int argc;
         char *argv[];
 {
-        int ch, fflag, tflag;
+        int ch, fflag, tflag, status;
         char *targ;
         extern char *optarg;
         extern int optind;
@@ -317,6 +323,7 @@ main(argc, argv)
                 targetshouldbedirectory = 1;
 
         remin = remout = -1;
+        do_cmd_pid = -1;
         /* Command to be executed on remote system using "ssh". */
         (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
             verbose_mode ? " -v" : "",
@@ -332,6 +339,22 @@ main(argc, argv)
                 if (targetshouldbedirectory)
                         verifydir(argv[argc - 1]);
         }
+        /*
+         * Finally check the exit status of the ssh process, if one was forked
+         * and no error has occured yet
+         */
+        if (do_cmd_pid != -1 && errs == 0) {
+                if (remin != -1)
+                    (void) close(remin);
+                if (remout != -1)
+                    (void) close(remout);
+                if (waitpid(do_cmd_pid, &status, 0) == -1)
+                        errs = 1;
+                else {
+                        if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
+                                errs = 1;
+                }
+        }
         exit(errs != 0);
 }