351 lines
9.0 KiB
Objective-C
351 lines
9.0 KiB
Objective-C
/*
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Copyright (C) 2004-2005 SKYRIX Software AG
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This file is part of OpenGroupware.org.
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OGo is free software; you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License as published by the
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Free Software Foundation; either version 2, or (at your option) any
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later version.
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OGo is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with OGo; see the file COPYING. If not, write to the
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Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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02111-1307, USA.
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*/
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#import <Foundation/NSArray.h>
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#import <Foundation/NSDictionary.h>
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#import <Foundation/NSEnumerator.h>
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#import <Foundation/NSString.h>
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#import <Foundation/NSUserDefaults.h>
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#import <NGObjWeb/NSException+HTTP.h>
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#import <NGObjWeb/SoObject+SoDAV.h>
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#import <NGObjWeb/WOContext.h>
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#import <NGObjWeb/WOResponse.h>
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#import <NGExtensions/NSNull+misc.h>
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#import <NGExtensions/NSObject+Logs.h>
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#import <NGExtensions/NGBase64Coding.h>
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#import <NGImap4/NGImap4Connection.h>
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#import "SOGoMailObject.h"
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#import "SOGoMailManager.h"
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#import "SOGoMailBodyPart.h"
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@implementation SOGoMailBodyPart
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static NSString *mailETag = nil;
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static BOOL debugOn = NO;
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+ (void) initialize
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{
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NSUserDefaults *ud = [NSUserDefaults standardUserDefaults];
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if (![[ud objectForKey:@"SOGoMailDisableETag"] boolValue]) {
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mailETag = [[NSString alloc] initWithFormat:@"\"imap4url_%d_%d_%03d\"",
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UIX_MAILER_MAJOR_VERSION,
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UIX_MAILER_MINOR_VERSION,
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UIX_MAILER_SUBMINOR_VERSION];
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NSLog(@"Note(SOGoMailBodyPart): using constant etag for mail parts: '%@'",
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mailETag);
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}
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else
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NSLog(@"Note(SOGoMailBodyPart): etag caching disabled!");
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}
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- (void)dealloc {
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[self->partInfo release];
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[self->identifier release];
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[self->pathToPart release];
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[super dealloc];
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}
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/* hierarchy */
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- (SOGoMailObject *)mailObject {
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return [[self container] mailObject];
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}
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/* IMAP4 */
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- (NSString *)bodyPartName {
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NSString *s;
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NSRange r;
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s = [self nameInContainer];
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r = [s rangeOfString:@"."]; /* strip extensions */
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if (r.length == 0)
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return s;
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return [s substringToIndex:r.location];
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}
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- (NSArray *)bodyPartPath {
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NSMutableArray *p;
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id obj;
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if (self->pathToPart != nil)
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return [self->pathToPart isNotNull] ? self->pathToPart : nil;
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p = [[NSMutableArray alloc] initWithCapacity:8];
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for (obj = self; [obj isKindOfClass:[SOGoMailBodyPart class]];
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obj = [obj container]) {
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[p insertObject:[obj bodyPartName] atIndex:0];
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}
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self->pathToPart = [p copy];
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[p release];
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return self->pathToPart;
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}
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- (NSString *)bodyPartIdentifier {
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if (self->identifier != nil)
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return [self->identifier isNotNull] ? self->identifier : nil;
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self->identifier =
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[[[self bodyPartPath] componentsJoinedByString:@"."] copy];
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return self->identifier;
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}
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- (NSURL *)imap4URL {
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/* reuse URL of message */
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return [[self mailObject] imap4URL];
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}
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/* part info */
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- (id)partInfo {
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if (self->partInfo != nil)
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return [self->partInfo isNotNull] ? self->partInfo : nil;
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self->partInfo =
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[[[self mailObject] lookupInfoForBodyPart:[self bodyPartPath]] retain];
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return self->partInfo;
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}
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/* name lookup */
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- (id) lookupImap4BodyPartKey: (NSString *) _key
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inContext: (id) _ctx
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{
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// TODO: we might want to check for existence prior controller creation
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Class clazz;
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clazz = [SOGoMailBodyPart bodyPartClassForKey:_key inContext:_ctx];
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return [clazz objectWithName: _key inContainer: self];
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}
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- (id) lookupName: (NSString *) _key
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inContext: (id) _ctx
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acquire: (BOOL) _flag
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{
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id obj;
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/* first check attributes directly bound to the application */
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obj = [super lookupName:_key inContext:_ctx acquire:NO];
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if (!obj)
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{
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/* lookup body part */
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if ([self isBodyPartKey:_key inContext:_ctx])
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obj = [self lookupImap4BodyPartKey:_key inContext:_ctx];
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/* should check whether such a filename exist in the attached names */
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if (!obj)
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obj = self;
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}
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return obj;
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}
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/* fetch */
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- (NSData *)fetchBLOB {
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// HEADER, HEADER.FIELDS, HEADER.FIELDS.NOT, MIME, TEXT
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NSString *enc;
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NSData *data;
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data = [[self imap4Connection] fetchContentOfBodyPart:
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[self bodyPartIdentifier]
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atURL:[self imap4URL]];
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if (data == nil) return nil;
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/* check for content encodings */
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if ((enc = [[self partInfo] valueForKey:@"encoding"]) != nil) {
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enc = [enc uppercaseString];
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if ([enc isEqualToString:@"BASE64"])
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data = [data dataByDecodingBase64];
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else if ([enc isEqualToString:@"7BIT"])
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; /* keep data as is */ // TODO: do we need to change encodings?
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else
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[self errorWithFormat:@"unsupported encoding: %@", enc];
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}
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return data;
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}
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/* WebDAV */
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- (NSString *)contentTypeForBodyPartInfo:(id)_info {
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NSMutableString *type;
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NSString *mt, *st;
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NSDictionary *parameters;
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NSEnumerator *ke;
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NSString *pn;
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if (![_info isNotNull])
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return nil;
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mt = [_info valueForKey:@"type"]; if (![mt isNotNull]) return nil;
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st = [_info valueForKey:@"subtype"]; if (![st isNotNull]) return nil;
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type = [NSMutableString stringWithCapacity:16];
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[type appendString:[mt lowercaseString]];
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[type appendString:@"/"];
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[type appendString:[st lowercaseString]];
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parameters = [_info valueForKey:@"parameterList"];
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ke = [parameters keyEnumerator];
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while ((pn = [ke nextObject]) != nil) {
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[type appendString:@"; "];
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[type appendString:pn];
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[type appendString:@"=\""];
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[type appendString:[[parameters objectForKey:pn] stringValue]];
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[type appendString:@"\""];
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}
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return type;
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}
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- (NSString *)contentTypeForPathExtension:(NSString *)pe {
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if ([pe length] == 0)
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return @"application/octet-stream";
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/* TODO: add some map */
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if ([pe isEqualToString:@"gif"]) return @"image/gif";
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if ([pe isEqualToString:@"png"]) return @"image/png";
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if ([pe isEqualToString:@"jpg"]) return @"image/jpeg";
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if ([pe isEqualToString:@"txt"]) return @"text/plain";
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return @"application/octet-stream";
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}
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- (NSString *) davContentType
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{
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// TODO: what about the content-type and other headers?
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// => we could pass them in as the extension? (eg generate 1.gif!)
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NSString *parts, *contentType, *extension;
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/* try type from body structure info */
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parts = [self contentTypeForBodyPartInfo: [self partInfo]];
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contentType = [[parts componentsSeparatedByString: @";"] objectAtIndex: 0];
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if (![contentType length])
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{
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extension = [[self nameInContainer] pathExtension];
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contentType = [self contentTypeForPathExtension: extension];
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}
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return contentType;
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}
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/* actions */
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- (id)GETAction:(id)_ctx {
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NSException *error;
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WOResponse *r;
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NSData *data;
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NSString *etag, *mimeType;
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if ((error = [self matchesRequestConditionInContext:_ctx]) != nil) {
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// TODO: currently we fetch the body structure to get here - check this!
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/* check whether the mail still exists */
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if (![[self mailObject] doesMailExist]) {
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return [NSException exceptionWithHTTPStatus:404 /* Not Found */
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reason:@"mail was deleted"];
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}
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return error; /* return 304 or 416 */
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}
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[self debugWithFormat:@"should fetch body part: %@",
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[self bodyPartIdentifier]];
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if ((data = [self fetchBLOB]) == nil) {
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return [NSException exceptionWithHTTPStatus:404 /* not found */
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reason:@"did not find body part"];
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}
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[self debugWithFormat:@" fetched %d bytes: %@", [data length],
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[self partInfo]];
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// TODO: wrong, could be encoded
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r = [(WOContext *)_ctx response];
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mimeType = [self davContentType];
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if ([mimeType isEqualToString: @"application/x-xpinstall"])
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mimeType = @"application/octet-stream";
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[r setHeader: mimeType forKey:@"content-type"];
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[r setHeader: [NSString stringWithFormat:@"%d", [data length]]
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forKey: @"content-length"];
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if ((etag = [self davEntityTag]) != nil)
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[r setHeader:etag forKey:@"etag"];
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[r setContent:data];
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return r;
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}
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/* factory */
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+ (Class)bodyPartClassForKey:(NSString *)_key inContext:(id)_ctx {
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NSString *pe;
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pe = [_key pathExtension];
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if (![pe isNotNull] || [pe length] == 0)
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return self;
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/* hard coded for now */
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switch ([pe length]) {
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case 3:
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if ([pe isEqualToString:@"gif"] ||
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[pe isEqualToString:@"png"] ||
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[pe isEqualToString:@"jpg"])
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return NSClassFromString(@"SOGoImageMailBodyPart");
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if ([pe isEqualToString:@"ics"])
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return NSClassFromString(@"SOGoCalendarMailBodyPart");
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if ([pe isEqualToString:@"vcf"])
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return NSClassFromString(@"SOGoVCardMailBodyPart");
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break;
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case 4:
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if ([pe isEqualToString:@"mail"])
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return NSClassFromString(@"SOGoMessageMailBodyPart");
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break;
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default:
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return self;
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}
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return self;
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}
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/* etag support */
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- (id)davEntityTag {
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return mailETag;
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}
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/* debugging */
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- (BOOL)isDebuggingEnabled {
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return debugOn;
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}
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@end /* SOGoMailBodyPart */
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