X-Git-Url: https://tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Fgenauth.c;h=7e154e35c1a1228dde6ed69c46c200547ff2eecc;hp=23f9770ae9e74b92ef00147b34ee4cead54c659b;hb=8c2b6537d32720b38554815181009c3098423414;hpb=210a92cae90deb5b4a410b1b7d5c625c5c5f2ffb

diff --git a/src/genauth.c b/src/genauth.c
index 23f9770a..7e154e35 100644
--- a/src/genauth.c
+++ b/src/genauth.c
@@ -35,12 +35,15 @@ int main(int argc, char **argv)
   int bits, c, i, bytes;
   unsigned char *p;
 
-  if(argc != 2)
+  if(argc > 2 || (argc == 2 && (!strcmp(argv[1], "-h") || !strcmp(argv[1], "--help"))))
     {
       fprintf(stderr, "Usage: %s bits\n", argv[0]);
       return 1;
     }
 
+  if(!argv[1])
+    argv[1] = "1024";
+  
   if(!(bits = atol(argv[1])))
     {
       fprintf(stderr, "Illegal number: %s\n", argv[1]);
@@ -72,11 +75,22 @@ int main(int argc, char **argv)
     }
   fclose(fp);
 
-  printf("%d ", bits);
-  for(i = 0; i < bytes; i++)
-    printf("%02x", p[i]);
-  puts("");
-  fprintf(stderr, ": done.\n");
+  if(isatty(1))
+    {
+      fprintf(stderr, ": done.\nThe following line should be ENTIRELY copied into a passphrase file:\n");
+      printf("%d ", bits);
+      for(i = 0; i < bytes; i++)
+	printf("%02x", p[i]);
+      puts("");
+    }
+  else
+    {
+      printf("%d ", bits);
+      for(i = 0; i < bytes; i++)
+	printf("%02x", p[i]);
+      puts("");
+      fprintf(stderr, ": done.\n");
+    }
 
   return 0;
 }