From 9e363e9311172602de4815aa72e6a4c597715bd0 Mon Sep 17 00:00:00 2001
From: Jonathan Schleifer <js@webkeks.org>
Date: Mon, 22 Sep 2014 21:00:50 +0200
Subject: [PATCH] Make repeating password optional with -r

This is useful when creating a new password, but annoying when just
using it to calculate the password to log in.
---
 main.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/main.c b/main.c
index b7baaf6..ce9aeb1 100644
--- a/main.c
+++ b/main.c
@@ -43,7 +43,7 @@ usage(void)
   fprintf(stderr,
       "Usage: scrypt-genpass [-l LEN] [-m MAXMEM] [-n] [-o MAXOPS] [-k KEYFILE]\n");
   fprintf(stderr,
-      "                      [-p PASS] <site>\n");
+      "                      [-p PASS] [-r] [-v] <site>\n");
   fprintf(stderr,
       "       scrypt-genpass -t\n");
   fprintf(stderr,
@@ -92,6 +92,7 @@ main(int argc, char *argv[])
 
   char ch;
   int rc;
+  bool repeat = false;
 
 #ifdef NEED_WARN_PROGNAME
   warn_progname = "scrypt-genpass";
@@ -102,7 +103,7 @@ main(int argc, char *argv[])
 
   init_parms(&sg_parms);
   /* Parse arguments. */
-  while ((ch = getopt(argc, argv, "htk:l:m:no:p:v")) != -1) {
+  while ((ch = getopt(argc, argv, "htk:l:m:no:p:rv")) != -1) {
     switch (ch) {
     case 'k':
       sg_parms.keyfile = strdup(optarg);
@@ -125,6 +126,9 @@ main(int argc, char *argv[])
     case 't':
       unit_tests();
       break;
+    case 'r':
+      repeat = true;
+      break;
     case 'v':
       sg_parms.verbose = 1;
       break;
@@ -142,7 +146,7 @@ main(int argc, char *argv[])
   if (!sg_parms.passwd) {
     /* Prompt for a password. */
     if (tarsnap_readpass((char**)&(sg_parms.passwd), "Please enter passphrase",
-        "Please confirm passphrase", 1))
+        (repeat ? "Please repeat passphrase" : NULL), 1))
       exit(1);
   }
   sg_parms.passwdlen = strlen(sg_parms.passwd);