From 3f7788f2e035eb939abb27b3a53854ec0fc6178c Mon Sep 17 00:00:00 2001
From: Ben Kibbey <bjk@luxsci.net>
Date: Wed, 1 Feb 2012 21:38:13 -0500
Subject: [PATCH] Inform the client of the preset passphrase length.

* agent/command.c (cmd_preset_passphrase): Send the INQUIRE_MAXLEN
status message before inquiring the passphrase.
---
 agent/command.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/agent/command.c b/agent/command.c
index 5fa8bceaf..732046ce3 100644
--- a/agent/command.c
+++ b/agent/command.c
@@ -1696,7 +1696,13 @@ cmd_preset_passphrase (assuan_context_t ctx, char *line)
     {
       /* Note that the passphrase will be truncated at any null byte and the
        * limit is 480 characters. */
-      rc = assuan_inquire (ctx, "PASSPHRASE", &passphrase, &len, 480);
+      char buf[50];
+      size_t maxlen = 480;
+
+      snprintf (buf, sizeof (buf), "%u", maxlen);
+      rc = assuan_write_status (ctx, "INQUIRE_MAXLEN", buf);
+      if (!rc)
+	rc = assuan_inquire (ctx, "PASSPHRASE", &passphrase, &len, maxlen);
     }
   else
     rc = set_error (GPG_ERR_NOT_IMPLEMENTED, "passphrase is required");