Add the INQUIRE_MAXLEN status message.

This status message is used to inform the client of the maximum length
of an inquired passphrase and is used in pinentry-mode=loopback.

* agent/command.c (pinentry_loopback): Send the INQUIRE_MAXLEN status
message before doing the inquire.

1 files changed, 6 insertions, 0 deletions

diff --git a/agent/command.c b/agent/command.c
index ad86a3575..5fa8bceaf 100644
--- a/agent/command.c
+++ b/agent/command.c
@@ -2791,6 +2791,12 @@ pinentry_loopback(ctrl_t ctrl, const char *keyword,
 {
   gpg_error_t rc;
   assuan_context_t ctx = ctrl->server_local->assuan_ctx;
+  char buf[50];
+
+  snprintf (buf, sizeof (buf), "%u", max_length);
+  rc = assuan_write_status (ctx, "INQUIRE_MAXLEN", buf);
+  if (rc)
+    return rc;
 
   assuan_begin_confidential (ctx);
   rc = assuan_inquire (ctx, keyword, buffer, size, max_length);