From 7131bda2e30582d110c674e7184c16f5ad3a205e Mon Sep 17 00:00:00 2001
From: Dwarven Yang <prison.yang@gmail.com>
Date: Thu, 16 Nov 2017 16:30:21 +0800
Subject: [PATCH] add alert for errSecItemNotFound

---
 Classes/ApplicationDelegate.m | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Classes/ApplicationDelegate.m b/Classes/ApplicationDelegate.m
index c9fe39d..bae804c 100644
--- a/Classes/ApplicationDelegate.m
+++ b/Classes/ApplicationDelegate.m
@@ -126,6 +126,13 @@ - (void)connect {
     
 	// Create identity.
 	result = SecIdentityCreateWithCertificate(_keychainRef, _certificateRef, &_identityRef);// NSLog(@"SecIdentityCreateWithCertificate(): %d", result);
+    
+    if (errSecItemNotFound == result) {
+        NSLog (@"SecIdentityCreateWithCertificate errSecItemNotFound");
+        NSAlert * alert = [NSAlert alertWithMessageText:@"Certificates error" defaultButton:@"OK" alternateButton:nil otherButton:nil informativeTextWithFormat:@"Verify that the local keychain has the corresponding certificates and private keys on your Mac."];
+        [alert beginSheetModalForWindow:[[NSApplication sharedApplication] keyWindow] completionHandler:NULL];
+        return;
+    }
 	
 	// Set client certificate.
 	CFArrayRef certificates = CFArrayCreate(NULL, (const void **)&_identityRef, 1, NULL);