feat(mail): initial support for ms-tnef (winmail.dat) body part

Fixes #2242 Fixes #4503
2026-10-05 20:10:33 +00:00 · 2021-08-13 11:12:37 -04:00
parent 98dad1d2dc
commit 045f134321
36 changed files with 3639 additions and 34 deletions
@@ -0,0 +1,129 @@
+/*
+  Copyright (C) 2021 Inverse inc.
+
+  This file is part of SOGo.
+
+  SOGo is free software; you can redistribute it and/or modify it under
+  the terms of the GNU Lesser General Public License as published by the
+  Free Software Foundation; either version 2, or (at your option) any
+  later version.
+
+  SOGo is distributed in the hope that it will be useful, but WITHOUT ANY
+  WARRANTY; without even the implied warranty of MERCHANTABILITY or
+  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
+  License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with SOGo; see the file COPYING.  If not, write to the
+  Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+  02111-1307, USA.
+*/
+
+#import <Foundation/NSDictionary.h>
+#import <Foundation/NSValue.h>
+
+#import <NGMime/NGMimeBodyPart.h>
+#import <NGMime/NGMimeHeaderFields.h>
+#import <NGMime/NGMimeMultipartBody.h>
+#import <NGMime/NGMimeType.h>
+
+#import <SoObjects/Mailer/NSString+Mail.h>
+#import <SoObjects/Mailer/SOGoTNEFMailBodyPart.h>
+
+#import "UIxMailRenderingContext.h"
+#import "UIxMailPartTNEFViewer.h"
+
+@implementation UIxMailPartTNEFViewer
+
+
+- (void) _attachmentIdsFromBodyPart: (id) thePart
+                           partPath: (NSString *) thePartPath
+{
+  if ([thePart isKindOfClass: [NGMimeBodyPart class]])
+    {
+      NSString *cid, *filename, *mimeType;
+
+      mimeType = [[thePart contentType] stringValue];
+      cid = [thePart contentId];
+      filename = [(NGMimeContentDispositionHeaderField *)[thePart headerForKey: @"content-disposition"] filename];
+
+      if (!filename)
+        filename = [mimeType asPreferredFilenameUsingPath: nil];
+
+      if (filename)
+        {
+          [(id)attachmentIds setObject: [NSString stringWithFormat: @"%@%@%@",
+                                                  [[self clientObject] baseURLInContext: [self context]],
+                                                  thePartPath,
+                                                  filename]
+                                forKey: [NSString stringWithFormat: @"<%@>", cid]];
+        }
+    }
+  else if ([thePart isKindOfClass: [NGMimeMultipartBody class]])
+    {
+      int i;
+
+      for (i = 0; i < [[thePart parts] count]; i++)
+        {
+          [self _attachmentIdsFromBodyPart: [[thePart parts] objectAtIndex: i]
+                                  partPath: [NSString stringWithFormat: @"%@%d/", thePartPath, i+1]];
+        }
+    }
+}
+
+- (id) contentViewerComponent
+{
+  id info;
+
+  info = [self childInfo];
+  return [[[self context] mailRenderingContext] viewerForBodyInfo: info];
+}
+
+- (id) renderedPart
+{
+  NSArray *parts;
+  NSInteger i, max;
+  NSMutableArray *renderedParts;
+  SOGoTNEFMailBodyPart *tnefPart;
+  id viewer, info;
+
+  tnefPart = (SOGoTNEFMailBodyPart *)[self clientPart];
+  parts = [[tnefPart bodyParts] parts];
+  max = [parts count];
+  renderedParts = [NSMutableArray arrayWithCapacity: max];
+
+  // Populate the list of attachments ids
+  for (i = 0; i < max; i++)
+    {
+      NGMimeBodyPart *part;
+
+      part = [parts objectAtIndex: i];
+      [self _attachmentIdsFromBodyPart: part
+                              partPath: [NSString stringWithFormat: @"%@/%d/", [tnefPart bodyPartIdentifier], i+1]];
+    }
+
+  // Render each part
+  for (i = 0; i < max; i++)
+    {
+      NGMimeBodyPart *part = [parts objectAtIndex: i];
+
+      [self setChildIndex: i];
+      [self setChildInfo: [part bodyInfo]];
+      info = [self childInfo];
+
+      viewer = [[[self context] mailRenderingContext] viewerForBodyInfo: info];
+      [viewer setBodyInfo: info];
+      [viewer setPartPath: [self childPartPath]];
+      [viewer setAttachmentIds: attachmentIds];
+      [viewer setFlatContent: [part body]];
+
+      [renderedParts addObject: [viewer renderedPart]];
+    }
+
+  return [NSDictionary dictionaryWithObjectsAndKeys:
+                         [self className], @"type",
+                       renderedParts, @"content",
+                       nil];
+}
+
+@end /* UIxMailPartTNEFViewer */