idevicepair: Fix 'validate' command which was broken since iOS 11

Apple removed the lockdownd command 'ValidatePair'. Validating a pairing
can just be done by trying to use the present pairing record to try to
start a lockdownd session: if it succeeds, the pairing is valid, otherwise
obviously not. So this is what we do now.

1 files changed, 5 insertions, 3 deletions

diff --git a/tools/idevicepair.c b/tools/idevicepair.c
index 6ae9103..0b866ea 100644
--- a/tools/idevicepair.c
+++ b/tools/idevicepair.c
@@ -2,8 +2,8 @@
  * idevicepair.c
  * Manage pairings with devices and this host
  *
- * Copyright (c) 2014 Martin Szulecki All Rights Reserved.
- * Copyright (c) 2010 Nikias Bassen All Rights Reserved.
+ * Copyright (c) 2010-2019 Nikias Bassen, All Rights Reserved.
+ * Copyright (c) 2014 Martin Szulecki, All Rights Reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -266,7 +266,9 @@ int main(int argc, char **argv)
                 break;
 
                 case OP_VALIDATE:
-                lerr = lockdownd_validate_pair(client, NULL);
+                lockdownd_client_free(client);
+                client = NULL;
+                lerr = lockdownd_client_new_with_handshake(device, &client, "idevicepair");
                 if (lerr == LOCKDOWN_E_SUCCESS) {
                         printf("SUCCESS: Validated pairing with device %s\n", udid);
                 } else {