- markus@cvs.openbsd.org 2003/01/23 13:50:27

[openssh.git] / readpass.c

diff --git a/readpass.c b/readpass.c
index 96b7e84b44fcee486b4f6e1e54defdd339ab5128..95ec5d8738987db9b7a7fdfdeb6c795f26104487 100644 (file)
--- a/readpass.c
+++ b/readpass.c
@@ -23,7 +23,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: readpass.c,v 1.27 2002/03/26 15:58:46 markus Exp $");
+RCSID("$OpenBSD: readpass.c,v 1.28 2003/01/23 13:50:27 markus Exp $");
 
 #include "xmalloc.h"
 #include "readpass.h"
@@ -46,11 +46,11 @@ ssh_askpass(char *askpass, const char *msg)
                fatal("internal error: askpass undefined");
        if (pipe(p) < 0) {
                error("ssh_askpass: pipe: %s", strerror(errno));
-               return xstrdup("");
+               return NULL;
        }
        if ((pid = fork()) < 0) {
                error("ssh_askpass: fork: %s", strerror(errno));
-               return xstrdup("");
+               return NULL;
        }
        if (pid == 0) {
                seteuid(getuid());
@@ -79,6 +79,11 @@ ssh_askpass(char *askpass, const char *msg)
                if (errno != EINTR)
                        break;
 
+       if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) {
+               memset(buf, 0, sizeof(buf));
+               return NULL;
+       }
+
        buf[strcspn(buf, "\r\n")] = '\0';
        pass = xstrdup(buf);
        memset(buf, 0, sizeof(buf));
@@ -115,7 +120,10 @@ read_passphrase(const char *prompt, int flags)
                        askpass = getenv(SSH_ASKPASS_ENV);
                else
                        askpass = _PATH_SSH_ASKPASS_DEFAULT;
-               return ssh_askpass(askpass, prompt);
+               if ((ret = ssh_askpass(askpass, prompt)) == NULL)
+                       if (!(flags & RP_ALLOW_EOF))
+                               return xstrdup("");
+               return ret;
        }
 
        if (readpassphrase(prompt, buf, sizeof buf, rppflags) == NULL) {