sogo/UI/MailPartViewers/UIxMailRenderingContext.m

336 lines
8.4 KiB
Objective-C

/*
Copyright (C) 2007-2017 Inverse inc.
Copyright (C) 2004-2005 SKYRIX Software AG
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 OGo; 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 <NGObjWeb/WOComponent.h>
#import <NGExtensions/NSObject+Logs.h>
#import <NGExtensions/NSNull+misc.h>
#import <SoObjects/Mailer/SOGoMailAccount.h>
#import <SoObjects/Mailer/SOGoMailObject.h>
#import "UIxMailRenderingContext.h"
@interface UIxMailRenderingContext (Private)
- (BOOL) _shouldDisplayAsAttachment: (NSDictionary *) info
textPart: (BOOL) textPart;
@end
@implementation UIxMailRenderingContext (Private)
- (BOOL) _shouldDisplayAsAttachment: (NSDictionary *) info
textPart: (BOOL) textPart
{
NSString *s;
BOOL shouldDisplay;
s = [[info objectForKey:@"disposition"] objectForKey: @"type"];
shouldDisplay = (s && ([s caseInsensitiveCompare: @"ATTACHMENT"] == NSOrderedSame));
if (!shouldDisplay && !textPart)
shouldDisplay = ([[info objectForKey: @"bodyId"] length] ? YES : NO);
return shouldDisplay;
}
@end
@implementation UIxMailRenderingContext
static BOOL showNamedTextAttachmentsInline = NO;
- (id) initWithViewer: (WOComponent *) _viewer
context: (WOContext *) _ctx
{
if ((self = [super init]))
{
viewer = _viewer;
context = _ctx;
}
return self;
}
- (id) init
{
return [self initWithViewer: nil context: nil];
}
- (void) dealloc
{
[flatContents release];
[super dealloc];
}
- (void) reset
{
[flatContents release];
flatContents = nil;
}
/* fetching */
- (NSDictionary *) flatContents
{
if (!flatContents)
{
flatContents = [[viewer clientObject] fetchPlainTextParts];
[flatContents retain];
// [self debugWithFormat:@"CON: %@", flatContents];
}
return flatContents;
}
- (NSData *) flatContentForPartPath: (NSArray *) _partPath
{
NSString *pid;
NSData *content;
pid = _partPath ? (id)[_partPath componentsJoinedByString: @"."] : (id)@"";
content = [[self flatContents] objectForKey: pid];
if (!content && ![pid intValue])
content = [flatContents objectForKey: @""];
return content;
}
/* viewer components */
- (WOComponent *) mixedViewer
{
/* Note: we cannot cache the multipart viewers, because it can be nested */
return [viewer pageWithName: @"UIxMailPartMixedViewer"];
}
- (WOComponent *) encryptedViewer
{
return [viewer pageWithName: @"UIxMailPartEncryptedViewer"];
}
- (WOComponent *) signedViewer
{
/* Note: we cannot cache the multipart viewers, because it can be nested */
// TODO: temporary workaround (treat it like a plain mixed part)
return [viewer pageWithName: @"UIxMailPartSignedViewer"];
}
- (WOComponent *) alternativeViewer
{
/* Note: we cannot cache the multipart viewers, because it can be nested */
return [viewer pageWithName: @"UIxMailPartAlternativeViewer"];
}
- (WOComponent *) textViewer
{
return [viewer pageWithName: @"UIxMailPartTextViewer"];
}
- (WOComponent *) imageViewer
{
return [viewer pageWithName: @"UIxMailPartImageViewer"];
}
- (WOComponent *) linkViewer
{
return [viewer pageWithName: @"UIxMailPartLinkViewer"];
}
- (WOComponent *) htmlViewer
{
return [viewer pageWithName: @"UIxMailPartHTMLViewer"];
}
- (WOComponent *) messageViewer
{
return [viewer pageWithName: @"UIxMailPartMessageViewer"];
}
- (WOComponent *) iCalViewer
{
return [viewer pageWithName: @"UIxMailPartICalViewer"];
}
- (WOComponent *) tnefViewer
{
return [viewer pageWithName: @"UIxMailPartTNEFViewer"];
}
/* main viewer selection */
- (WOComponent *) viewerForBodyInfo: (id) _info
{
NSString *mt, *st;
mt = [[_info valueForKey:@"type"] lowercaseString];
st = [[_info valueForKey:@"subtype"] lowercaseString];
if ([mt isEqualToString:@"multipart"])
{
if ([st isEqualToString: @"mixed"]
|| [st isEqualToString: @"digest"]
|| [st isEqualToString: @"related"]
|| [st isEqualToString: @"appledouble"])
return [self mixedViewer];
else if ([st isEqualToString: @"signed"])
return [self signedViewer];
else if ([st isEqualToString: @"alternative"])
return [self alternativeViewer];
if ([st isEqualToString: @"report"])
/* this is used by mail-delivery reports */
return [self mixedViewer];
}
else if ([mt isEqualToString: @"text"])
{
if ([st isEqualToString: @"plain"] || [st isEqualToString: @"html"]) {
if (!showNamedTextAttachmentsInline && [self _shouldDisplayAsAttachment: _info textPart: YES])
return [self linkViewer];
return [st isEqualToString: @"html"]
? [self htmlViewer] : [self textViewer];
}
if ([st isEqualToString:@"calendar"])
return [self iCalViewer];
}
// TIFF files aren't well-supported and Thunderbird sometimes send PDF
// files over as image/pdf !
if ([mt isEqualToString: @"image"] &&
!([st isEqualToString: @"tiff"] || [st isEqualToString: @"pdf"]))
{
if ([self _shouldDisplayAsAttachment: _info textPart: NO] || [st isEqualToString: @"svg+xml"])
return [self linkViewer];
return [self imageViewer];
}
if ([mt isEqualToString: @"message"] && [st isEqualToString: @"rfc822"])
return [self messageViewer];
if ([mt isEqualToString: @"message"] &&
[st isEqualToString: @"delivery-status"]) {
/*
Content-Description: Delivery error report
Content-Type: message/delivery-status
Reporting-MTA: dns; mail.opengroupware.org
Arrival-Date: Mon, 18 Jul 2005 12:08:43 +0200 (CEST)
Final-Recipient: rfc822; ioioi@plop.com
Action: failed
Status: 5.0.0
Diagnostic-Code: X-Postfix; host plop.com[64.39.31.55] said: 550 5.7.1
<ioioi@plop.com>... Relaying denied
*/
// Note: we cannot use the text viewer because the body is not pre-fetched
return [self linkViewer];
}
if ([mt isEqualToString: @"application"])
{
// octet-stream (generate download link?, autodetect type?)
if ([st isEqualToString: @"ics"]) /* Cooqle K4lendahr - Google Calendar */
return [self iCalViewer];
if ([st isEqualToString: @"x-pkcs7-mime"] ||
[st isEqualToString: @"pkcs7-mime"])
{
NSString *smt;
smt = [[[_info objectForKey:@"parameterList"] valueForKey:@"smime-type"] lowercaseString];
if ([smt isEqualToString:@"signed-data"])
{
return [self encryptedViewer];
}
else if ([smt isEqualToString:@"enveloped-data"])
{
// If the mail account has a valid certificate, we try to decode
// the encrypted email. Otherwise, we fallback to a link viewer
if ([[[viewer clientObject] mailAccountFolder] certificate])
return [self encryptedViewer];
}
}
if ([st isEqualToString: @"ms-tnef"])
{
return [self tnefViewer];
}
#if 0 /* the link viewer looks better than plain text ;-) */
if ([st isEqualToString: @"pgp-signature"]) // TODO: real PGP viewer
return [self textViewer];
#endif
}
// TODO: always fallback to octet viewer?!
#if 1
[self errorWithFormat: @"found no viewer for MIME type: %@/%@", mt, st];
#endif
return [self linkViewer];
}
/* debugging */
- (BOOL) isDebuggingEnabled
{
return NO;
}
@end /* UIxMailRenderingContext */
@implementation WOContext(UIxMailPart)
static NSString *MRK = @"UIxMailRenderingContext";
- (void) pushMailRenderingContext: (UIxMailRenderingContext *) _mctx
{
[self setObject:_mctx forKey:MRK];
}
- (UIxMailRenderingContext *) popMailRenderingContext
{
UIxMailRenderingContext *mctx;
if ((mctx = [self objectForKey:MRK]) == nil)
return nil;
mctx = [[mctx retain] autorelease];
[self removeObjectForKey:MRK];
return mctx;
}
- (UIxMailRenderingContext *) mailRenderingContext
{
return [self objectForKey:MRK];
}
@end /* WOContext(UIxMailPart) */