fix(mail(web)): display emails extracted from smime certificate

Fixes #5440

UI/MailPartViewers/UIxMailPartSignedViewer.h

@@ -1,6 +1,6 @@
 /* UIxMailPartSignedViewer.h - this file is part of SOGo
  *
- * Copyright (C) 2009-2018 Inverse inc.
+ * Copyright (C) 2009-2021 Inverse inc.
  *
  * This file is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -38,7 +38,8 @@
 - (NSString *) validationMessage;
 - (NSArray *) smimeCertificates;
 - (NSDictionary *) certificateForSubject: (NSString *) subject
-                               andIssuer: (NSString *) issuer;
+                               andIssuer: (NSString *) issuer
+                              withEmails: (NSArray *) emails;
 
 @end
 

UI/MailPartViewers/UIxMailPartSignedViewer.m

@@ -159,7 +159,8 @@
 	      BIO_free(buf);
 
               [certificates addObject: [self certificateForSubject: subject
-                                                         andIssuer: issuer]];
+                                                         andIssuer: issuer
+                                                        withEmails: emails]];
 	    }
 	}
       
@@ -240,10 +241,12 @@
 
 - (NSDictionary *) certificateForSubject: (NSString *) subject
                                andIssuer: (NSString *) issuer
+                              withEmails: (NSArray *) emails
 {
   return [NSDictionary dictionaryWithObjectsAndKeys:
-                              [subject componentsFromMultilineDN], @"subject",
-                              [issuer componentsFromMultilineDN], @"issuer",
+                         [subject componentsFromMultilineDN], @"subject",
+                         [issuer componentsFromMultilineDN], @"issuer",
+                         emails, @"emails",
                        nil];
 }