X-Git-Url: http://git.annexia.org/?a=blobdiff_plain;f=daemon%2Fstrings.c;h=778aea349c1a8b920b4a1a13f4b11e8adb9e9219;hb=09cf74a339670daeb2e841cdf26082e086ff5fa9;hp=d7dc392af4ad3fb7e6fcd775e95ffbbaa31c794d;hpb=84fc760439e82e6b3616abd0d1f9bd7d7eb01ec0;p=libguestfs.git

diff --git a/daemon/strings.c b/daemon/strings.c
index d7dc392..778aea3 100644
--- a/daemon/strings.c
+++ b/daemon/strings.c
@@ -33,6 +33,12 @@ do_strings_e (const char *encoding, const char *path)
   char *out, *err;
   char **lines;
 
+  if (strlen (encoding) != 1 ||
+      strchr ("sSblBL", encoding[0]) == NULL) {
+    reply_with_error ("%s: invalid encoding", encoding);
+    return NULL;
+  }
+
   buf = sysroot_path (path);
   if (!buf) {
     reply_with_perror ("malloc");
@@ -42,7 +48,7 @@ do_strings_e (const char *encoding, const char *path)
   r = command (&out, &err, "strings", "-e", encoding, buf, NULL);
   free (buf);
   if (r == -1) {
-    reply_with_error ("strings: %s: %s", path, err);
+    reply_with_error ("%s: %s", path, err);
     free (err);
     free (out);
     return NULL;