mirror of
https://github.com/gnustep/libs-base.git
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fcc13ccd0f
git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@21245 72102866-910b-0410-8b05-ffd578937521
1029 lines
23 KiB
Objective-C
1029 lines
23 KiB
Objective-C
/** GSFTPURLHandle.m - Class GSFTPURLHandle
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Copyright (C) 2002 Free Software Foundation, Inc.
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Written by: Richard Frith-Macdonald <rfm@gnu.org>
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Date: June 2002
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This file is part of the GNUstep Library.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this library; if not, write to the Free
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Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111 USA.
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*/
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#include "config.h"
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#include "Foundation/NSArray.h"
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#include "Foundation/NSString.h"
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#include "Foundation/NSException.h"
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#include "Foundation/NSValue.h"
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#include "Foundation/NSData.h"
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#include "Foundation/NSURL.h"
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#include "Foundation/NSURLHandle.h"
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#include "Foundation/NSNotification.h"
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#include "Foundation/NSRunLoop.h"
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#include "Foundation/NSByteOrder.h"
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#include "Foundation/NSLock.h"
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#include "Foundation/NSFileHandle.h"
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#include "Foundation/NSDebug.h"
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#include "GNUstepBase/GSMime.h"
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GS_EXPORT NSString * const GSTelnetNotification;
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GS_EXPORT NSString * const GSTelnetErrorKey;
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GS_EXPORT NSString * const GSTelnetTextKey;
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@interface GSTelnetHandle : NSObject
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{
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NSStringEncoding enc;
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NSFileHandle *remote;
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NSMutableData *ibuf;
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unsigned pos;
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BOOL lineMode;
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BOOL connected;
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}
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- (id) initWithHandle: (NSFileHandle*)handle isConnected: (BOOL)flag;
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- (void) putTelnetLine: (NSString*)s;
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- (void) putTelnetText: (NSString*)s;
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- (void) setEncoding: (NSStringEncoding)e;
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- (void) setLineMode: (BOOL)flag;
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@end
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@interface GSTelnetHandle (Private)
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- (void) _didConnect: (NSNotification*)notification;
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- (void) _didRead: (NSNotification*)notification;
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- (void) _didWrite: (NSNotification*)notification;
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@end
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NSString * const GSTelnetNotification = @"GSTelnetNotification";
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NSString * const GSTelnetErrorKey = @"GSTelnetErrorKey";
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NSString * const GSTelnetTextKey = @"GSTelnetTextKey";
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@implementation GSTelnetHandle
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#define WILL 251
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#define WONT 252
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#define DO 253
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#define DONT 254
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#define IAC 255
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- (void) dealloc
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{
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NSNotificationCenter *nc = [NSNotificationCenter defaultCenter];
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[nc removeObserver: self];
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RELEASE(remote);
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RELEASE(ibuf);
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[super dealloc];
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}
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- (id) init
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{
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return [self initWithHandle: nil isConnected: NO];
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}
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- (id) initWithHandle: (NSFileHandle*)handle isConnected: (BOOL)flag
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{
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if (handle == nil)
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{
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DESTROY(self);
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}
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else
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{
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NSNotificationCenter *nc = [NSNotificationCenter defaultCenter];
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connected = flag;
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enc = NSUTF8StringEncoding;
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ibuf = [NSMutableData new];
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remote = RETAIN(handle);
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if (connected == YES)
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{
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[nc addObserver: self
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selector: @selector(_didRead:)
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name: NSFileHandleReadCompletionNotification
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object: remote];
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[nc addObserver: self
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selector: @selector(_didWrite:)
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name: GSFileHandleWriteCompletionNotification
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object: remote];
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[remote readInBackgroundAndNotify];
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}
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else
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{
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[nc addObserver: self
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selector: @selector(_didConnect:)
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name: GSFileHandleConnectCompletionNotification
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object: remote];
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}
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}
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return self;
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}
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- (void) putTelnetLine: (NSString*)s
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{
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if ([s hasSuffix: @"\n"] == NO)
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{
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s = [s stringByAppendingString: @"\r\n"];
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}
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[self putTelnetText: s];
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}
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- (void) putTelnetText: (NSString*)s
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{
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NSMutableData *md;
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unsigned char *to;
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NSData *d = [s dataUsingEncoding: enc];
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unsigned char *from = (unsigned char *)[d bytes];
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unsigned int len = [d length];
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unsigned int i = 0;
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unsigned int count = 0;
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for (i = 0; i < len; i++)
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{
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if (from[i] == IAC)
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{
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count++;
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}
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}
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md = [[NSMutableData alloc] initWithLength: len + count];
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to = [md mutableBytes];
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for (i = 0; i < len; i++)
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{
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if (*from == IAC)
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{
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*to++ = IAC;
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}
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*to++ = *from++;
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}
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//NSLog(@"Write - '%*.*s'", [md length], [md length], [md bytes]);
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[remote writeInBackgroundAndNotify: md];
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DESTROY(md);
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}
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/**
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* Set the string encoding used to convert strings to be sent to the
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* remote system into raw data, and to convert incoming data from that
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* system inot input text.
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*/
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- (void) setEncoding: (NSStringEncoding)e
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{
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enc = e;
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}
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/**
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* Sets a flag to say whether observers are to be notified of incoming
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* data after every chunk read, or only when one or more entire lines
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* are read. <br />
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* When switching out of line mode, this will cause a notification to be
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* generated if there is any buffered data available for use.
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*/
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- (void) setLineMode: (BOOL)flag
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{
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if (lineMode != flag)
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{
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lineMode = flag;
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if (lineMode == NO)
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{
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[self _didRead: nil];
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}
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}
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}
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@end
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@implementation GSTelnetHandle (Private)
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- (void) _didConnect: (NSNotification*)notification
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{
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NSNotificationCenter *nc = [NSNotificationCenter defaultCenter];
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NSDictionary *info = [notification userInfo];
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NSString *e;
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e = [info objectForKey: GSFileHandleNotificationError];
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if (e == nil)
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{
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[nc removeObserver: self
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name: GSFileHandleConnectCompletionNotification
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object: [notification object]];
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[nc addObserver: self
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selector: @selector(_didRead:)
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name: NSFileHandleReadCompletionNotification
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object: remote];
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[nc addObserver: self
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selector: @selector(_didWrite:)
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name: GSFileHandleWriteCompletionNotification
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object: remote];
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[remote readInBackgroundAndNotify];
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}
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else
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{
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info = [NSDictionary dictionaryWithObject: e
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forKey: GSTelnetErrorKey];
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[nc postNotificationName: GSTelnetNotification
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object: self
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userInfo: info];
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}
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}
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- (void) _didRead: (NSNotification*)notification
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{
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NSDictionary *userInfo = [notification userInfo];
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NSMutableArray *text = nil;
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NSData *d;
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d = [userInfo objectForKey: NSFileHandleNotificationDataItem];
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/*
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* If the notification is nil, this method has been called to flush
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* any buffered data out.
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*/
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if (notification != nil && (d == nil || [d length] == 0))
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{
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NSNotificationCenter *nc = [NSNotificationCenter defaultCenter];
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NSDictionary *info;
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info = [NSDictionary dictionaryWithObject: @"EOF"
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forKey: GSTelnetErrorKey];
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[nc postNotificationName: GSTelnetNotification
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object: self
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userInfo: info];
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}
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else
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{
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NSMutableData *toWrite = nil;
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unsigned char *ptr;
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unsigned char c;
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unsigned int s = 0;
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int old;
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int len;
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int i; // May be negative.
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if (d != nil)
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{
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// NSLog(@"Read - '%@'", d);
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[ibuf appendData: d];
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}
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old = len = (int)[ibuf length];
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ptr = [ibuf mutableBytes];
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for (i = pos; i < len; i++)
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{
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NSData *line = nil;
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c = ptr[i];
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if (c == IAC)
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{
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if (i < len - 1)
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{
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c = ptr[i+1];
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if (c == WILL || c == WONT || c == DO || c == DONT)
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{
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/*
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* refuse any negotiation attempts.
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*/
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if (c == WILL || c == DO)
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{
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unsigned char opt[3];
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if (toWrite == nil)
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{
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toWrite = [NSMutableData alloc];
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toWrite = [toWrite initWithCapacity: 12];
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}
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opt[0] = IAC;
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if (c == DO)
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{
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opt[1] = WONT;
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}
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else
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{
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opt[1] = DONT;
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}
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opt[2] = ptr[i+2];
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[toWrite appendBytes: opt length: 3];
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}
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if (i < len - 2)
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{
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// NSLog(@"Command: %d %d", ptr[1], ptr[2]);
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len -= 3;
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if (len - i > 0)
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{
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memcpy(ptr, &ptr[3], len - i);
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}
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i--; // Try again.
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}
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else
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{
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i--;
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break; // Need more data
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}
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}
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else if (c == IAC) // Escaped IAC
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{
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len--;
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if (len - i > 0)
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{
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memcpy(ptr, &ptr[1], len - i);
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}
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}
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else
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{
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// NSLog(@"Command: %d", ptr[1]);
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/*
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* Strip unimplemented escape sequence.
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*/
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len -= 2;
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if (len - i > 0)
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{
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memcpy(ptr, &ptr[2], len - i);
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}
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i--; // Try again from here.
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}
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}
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else
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{
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i--;
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break; // Need more data
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}
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}
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else if (c == '\r' && (int)i < len - 1 && ptr[i+1] == '\n')
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{
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line = [[NSData alloc] initWithBytes: &ptr[s] length: i-s+2];
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i++;
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s = i + 1;
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}
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else if (c == '\n')
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{
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line = [[NSData alloc] initWithBytes: &ptr[s] length: i-s+1];
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s = i + 1;
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}
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if (line != nil)
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{
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NSString *lineString;
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lineString = [[NSString alloc] initWithData: line encoding: enc];
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DESTROY(line);
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if (text == nil)
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{
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text = [[NSMutableArray alloc] initWithCapacity: 4];
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}
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[text addObject: lineString];
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DESTROY(lineString);
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}
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}
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pos = i;
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/*
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* If not in line mode, we can add the remainder of the data to
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* the array of strings for notification.
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*/
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if (lineMode == NO && s != pos)
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{
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NSString *lineString;
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NSData *line;
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line = [[NSData alloc] initWithBytes: &ptr[s] length: pos - s];
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s = pos;
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lineString = [[NSString alloc] initWithData: line encoding: enc];
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DESTROY(line);
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if (text == nil)
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{
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text = [[NSMutableArray alloc] initWithCapacity: 4];
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}
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[text addObject: lineString];
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DESTROY(lineString);
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}
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/*
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* Adjust size of data remaining in buffer if necessary.
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*/
|
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if (old != len || s > 0)
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{
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if (s > 0)
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{
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len -= s;
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pos -= s;
|
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if (len > 0)
|
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{
|
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memcpy(ptr, &ptr[s], len);
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}
|
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}
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[ibuf setLength: len];
|
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}
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|
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/*
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* Send telnet protocol negotion info if necessary.
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*/
|
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if (toWrite != nil)
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{
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// NSLog(@"Write - '%@'", toWrite);
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[remote writeInBackgroundAndNotify: toWrite];
|
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DESTROY(toWrite);
|
||
}
|
||
|
||
/*
|
||
* Send notification for text read as necessary.
|
||
*/
|
||
if (text != nil)
|
||
{
|
||
NSNotificationCenter *nc = [NSNotificationCenter defaultCenter];
|
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NSNotification *n;
|
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NSDictionary *info;
|
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|
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info = [NSDictionary dictionaryWithObject: text
|
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forKey: GSTelnetTextKey];
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DESTROY(text);
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n = [NSNotification notificationWithName: GSTelnetNotification
|
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object: self
|
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userInfo: info];
|
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[nc postNotification: n];
|
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}
|
||
[remote readInBackgroundAndNotify];
|
||
}
|
||
}
|
||
|
||
- (void) _didWrite: (NSNotification*)notification
|
||
{
|
||
NSDictionary *userInfo = [notification userInfo];
|
||
NSString *e;
|
||
|
||
e = [userInfo objectForKey: GSFileHandleNotificationError];
|
||
if (e)
|
||
{
|
||
NSNotificationCenter *nc = [NSNotificationCenter defaultCenter];
|
||
NSDictionary *info;
|
||
|
||
info = [NSDictionary dictionaryWithObject: e
|
||
forKey: GSTelnetErrorKey];
|
||
[nc postNotificationName: GSTelnetNotification
|
||
object: self
|
||
userInfo: info];
|
||
}
|
||
}
|
||
@end
|
||
|
||
|
||
|
||
@interface GSFTPURLHandle : NSURLHandle
|
||
{
|
||
GSTelnetHandle *cHandle;
|
||
NSFileHandle *dHandle;
|
||
NSURL *url;
|
||
NSData *wData;
|
||
enum {
|
||
idle,
|
||
cConnect, // Establishing control connection
|
||
sentUser, // Sent username
|
||
sentPass, // Sent password
|
||
sentType, // Sent data type
|
||
sentPasv, // Requesting host/port information for data link
|
||
data, // Establishing or using data connection
|
||
list, // listing directory
|
||
} state;
|
||
}
|
||
- (void) _control: (NSNotification*)n;
|
||
- (void) _data: (NSNotification*)n;
|
||
@end
|
||
|
||
/**
|
||
* <p>
|
||
* This is a <em>PRIVATE</em> subclass of NSURLHandle.
|
||
* It is documented here in order to give you information about the
|
||
* default behavior of an NSURLHandle created to deal with a URL
|
||
* that has the <code>ftp</code> scheme.
|
||
* The name and/or other implementation details of this class
|
||
* may be changed at any time.
|
||
* </p>
|
||
* <p>
|
||
* A GSFTPURLHandle instance is used to manage connections to
|
||
* <code>ftp</code> URLs.
|
||
* </p>
|
||
*/
|
||
@implementation GSFTPURLHandle
|
||
|
||
static NSMutableDictionary *urlCache = nil;
|
||
static NSLock *urlLock = nil;
|
||
|
||
+ (NSURLHandle*) cachedHandleForURL: (NSURL*)newUrl
|
||
{
|
||
NSURLHandle *obj = nil;
|
||
|
||
if ([[newUrl scheme] caseInsensitiveCompare: @"ftp"] == NSOrderedSame)
|
||
{
|
||
NSString *page = [newUrl absoluteString];
|
||
// NSLog(@"Lookup for handle for '%@'", page);
|
||
[urlLock lock];
|
||
obj = [urlCache objectForKey: page];
|
||
AUTORELEASE(RETAIN(obj));
|
||
[urlLock unlock];
|
||
// NSLog(@"Found handle %@", obj);
|
||
}
|
||
return obj;
|
||
}
|
||
|
||
+ (void) initialize
|
||
{
|
||
if (self == [GSFTPURLHandle class])
|
||
{
|
||
urlCache = [NSMutableDictionary new];
|
||
urlLock = [NSLock new];
|
||
}
|
||
}
|
||
|
||
- (void) dealloc
|
||
{
|
||
if (state != idle)
|
||
{
|
||
[self endLoadInBackground];
|
||
}
|
||
RELEASE(url);
|
||
RELEASE(wData);
|
||
[super dealloc];
|
||
}
|
||
|
||
- (id) initWithURL: (NSURL*)newUrl
|
||
cached: (BOOL)cached
|
||
{
|
||
if ((self = [super initWithURL: newUrl cached: cached]) != nil)
|
||
{
|
||
ASSIGN(url, newUrl);
|
||
state = idle;
|
||
if (cached == YES)
|
||
{
|
||
NSString *page = [newUrl absoluteString];
|
||
|
||
[urlLock lock];
|
||
[urlCache setObject: self forKey: page];
|
||
[urlLock unlock];
|
||
// NSLog(@"Cache handle %@ for '%@'", self, page);
|
||
}
|
||
}
|
||
return self;
|
||
}
|
||
|
||
+ (BOOL) canInitWithURL: (NSURL*)newUrl
|
||
{
|
||
if ([[newUrl scheme] isEqualToString: @"ftp"] == YES)
|
||
{
|
||
return YES;
|
||
}
|
||
return NO;
|
||
}
|
||
|
||
- (void) _control: (NSNotification*)n
|
||
{
|
||
NSDictionary *info = [n userInfo];
|
||
NSString *e = [info objectForKey: GSTelnetErrorKey];
|
||
NSArray *text;
|
||
NSString *line;
|
||
|
||
if (e == nil)
|
||
{
|
||
NSEnumerator *enumerator;
|
||
|
||
text = [info objectForKey: GSTelnetTextKey];
|
||
// NSLog(@"Ctl: %@", text);
|
||
/*
|
||
* Find first reply line which is not a continuation of another.
|
||
*/
|
||
enumerator = [text objectEnumerator];
|
||
while ((line = [enumerator nextObject]) != nil)
|
||
{
|
||
if ([line length] > 4 && [line characterAtIndex: 3] != '-')
|
||
{
|
||
break;
|
||
}
|
||
}
|
||
if (line == nil)
|
||
{
|
||
return;
|
||
}
|
||
|
||
if (state == cConnect)
|
||
{
|
||
if ([line hasPrefix: @"2"] == YES)
|
||
{
|
||
NSString *user = [url user];
|
||
|
||
if (user == nil)
|
||
{
|
||
user = @"anonymous";
|
||
}
|
||
[cHandle putTelnetLine: [@"USER " stringByAppendingString: user]];
|
||
state = sentUser;
|
||
}
|
||
else
|
||
{
|
||
e = line;
|
||
}
|
||
}
|
||
else if (state == sentUser)
|
||
{
|
||
if ([line hasPrefix: @"230"] == YES) // No password required
|
||
{
|
||
[cHandle putTelnetLine: @"TYPE I"];
|
||
state = sentType;
|
||
}
|
||
else if ([line hasPrefix: @"331"] == YES)
|
||
{
|
||
NSString *pass = [url password];
|
||
|
||
if (pass == nil)
|
||
{
|
||
pass = [url user];
|
||
if (pass == nil)
|
||
{
|
||
pass = @"GNUstep@here";
|
||
}
|
||
else
|
||
{
|
||
pass = @"";
|
||
}
|
||
}
|
||
[cHandle putTelnetLine: [@"PASS " stringByAppendingString: pass]];
|
||
state = sentPass;
|
||
}
|
||
else
|
||
{
|
||
e = line;
|
||
}
|
||
}
|
||
else if (state == sentPass)
|
||
{
|
||
if ([line hasPrefix: @"2"] == YES)
|
||
{
|
||
[cHandle putTelnetLine: @"TYPE I"];
|
||
state = sentType;
|
||
}
|
||
else
|
||
{
|
||
e = line;
|
||
}
|
||
}
|
||
else if (state == sentType)
|
||
{
|
||
if ([line hasPrefix: @"2"] == YES)
|
||
{
|
||
[cHandle putTelnetLine: @"PASV"];
|
||
state = sentPasv;
|
||
}
|
||
else
|
||
{
|
||
e = line;
|
||
}
|
||
}
|
||
else if (state == sentPasv)
|
||
{
|
||
if ([line hasPrefix: @"227"] == YES)
|
||
{
|
||
NSRange r = [line rangeOfString: @"("];
|
||
NSString *h = nil;
|
||
NSString *p = nil;
|
||
|
||
if (r.length > 0)
|
||
{
|
||
unsigned pos = NSMaxRange(r);
|
||
|
||
r = [line rangeOfString: @")"];
|
||
if (r.length > 0 && r.location > pos)
|
||
{
|
||
NSArray *a;
|
||
|
||
r = NSMakeRange(pos, r.location - pos);
|
||
line = [line substringWithRange: r];
|
||
a = [line componentsSeparatedByString: @","];
|
||
if ([a count] == 6)
|
||
{
|
||
h = [NSString stringWithFormat: @"%@.%@.%@.%@",
|
||
[a objectAtIndex: 0], [a objectAtIndex: 1],
|
||
[a objectAtIndex: 2], [a objectAtIndex: 3]];
|
||
p = [NSString stringWithFormat: @"%d",
|
||
[[a objectAtIndex: 4] intValue] * 256
|
||
+ [[a objectAtIndex: 5] intValue]];
|
||
}
|
||
}
|
||
}
|
||
if (h == nil)
|
||
{
|
||
e = @"Invalid host/port information for pasv command";
|
||
}
|
||
else
|
||
{
|
||
NSNotificationCenter *nc;
|
||
|
||
dHandle = [NSFileHandle
|
||
fileHandleAsClientInBackgroundAtAddress: h service: p
|
||
protocol: @"tcp"];
|
||
RETAIN(dHandle);
|
||
nc = [NSNotificationCenter defaultCenter];
|
||
[nc addObserver: self
|
||
selector: @selector(_data:)
|
||
name: GSFileHandleConnectCompletionNotification
|
||
object: dHandle];
|
||
state = data;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
e = line;
|
||
}
|
||
}
|
||
else if (state == data)
|
||
{
|
||
if ([line hasPrefix: @"550"] == YES && wData == nil)
|
||
{
|
||
state = list;
|
||
[cHandle putTelnetLine:
|
||
[NSString stringWithFormat: @"NLST %@", [url path]]];
|
||
}
|
||
else if ([line hasPrefix: @"1"] == NO && [line hasPrefix: @"2"] == NO)
|
||
{
|
||
e = line;
|
||
}
|
||
}
|
||
else if (state == list)
|
||
{
|
||
if ([line hasPrefix: @"550"] == YES)
|
||
{
|
||
NSRange r = [line rangeOfString: @"not a plain file"];
|
||
|
||
/*
|
||
* Some servers may return an error on listing even though
|
||
* the path was a valid directory. We try to catch some of
|
||
* those cases and produce an empty listing instead.
|
||
*/
|
||
if (r.location > 0)
|
||
{
|
||
NSNotificationCenter *nc;
|
||
|
||
nc = [NSNotificationCenter defaultCenter];
|
||
if (dHandle != nil)
|
||
{
|
||
[nc removeObserver: self name: nil object: dHandle];
|
||
[dHandle closeFile];
|
||
DESTROY(dHandle);
|
||
}
|
||
[nc removeObserver: self
|
||
name: GSTelnetNotification
|
||
object: cHandle];
|
||
DESTROY(cHandle);
|
||
state = idle;
|
||
[self didLoadBytes: [NSData data] loadComplete: YES];
|
||
}
|
||
else
|
||
{
|
||
e = line;
|
||
}
|
||
}
|
||
else if ([line hasPrefix: @"1"] == NO && [line hasPrefix: @"2"] == NO)
|
||
{
|
||
e = line;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
e = @"Message in unknown state";
|
||
}
|
||
}
|
||
if (e != nil)
|
||
{
|
||
/*
|
||
* Tell superclass that the load failed - let it do housekeeping.
|
||
*/
|
||
[self endLoadInBackground];
|
||
[self backgroundLoadDidFailWithReason: e];
|
||
}
|
||
}
|
||
|
||
- (void) _data: (NSNotification*)n
|
||
{
|
||
NSNotificationCenter *nc = [NSNotificationCenter defaultCenter];
|
||
NSString *name = [n name];
|
||
NSDictionary *info = [n userInfo];
|
||
NSString *e = [info objectForKey: GSFileHandleNotificationError];
|
||
|
||
// NSLog(@"_data: %@", n);
|
||
[nc removeObserver: self name: name object: dHandle];
|
||
|
||
/*
|
||
* See if the connection attempt caused an error.
|
||
*/
|
||
if (e != nil)
|
||
{
|
||
if ([name isEqualToString: GSFileHandleConnectCompletionNotification])
|
||
{
|
||
NSLog(@"Unable to connect to %@:%@ via socket ... %@",
|
||
[dHandle socketAddress], [dHandle socketService], e);
|
||
}
|
||
// NSLog(@"Fail - %@", e);
|
||
/*
|
||
* Tell superclass that the load failed - let it do housekeeping.
|
||
*/
|
||
[self endLoadInBackground];
|
||
[self backgroundLoadDidFailWithReason: e];
|
||
return;
|
||
}
|
||
if ([name isEqualToString: GSFileHandleConnectCompletionNotification])
|
||
{
|
||
if (wData == nil)
|
||
{
|
||
[cHandle putTelnetLine:
|
||
[NSString stringWithFormat: @"RETR %@", [url path]]];
|
||
[nc addObserver: self
|
||
selector: @selector(_data:)
|
||
name: NSFileHandleReadCompletionNotification
|
||
object: dHandle];
|
||
[dHandle readInBackgroundAndNotify];
|
||
}
|
||
else
|
||
{
|
||
[cHandle putTelnetLine:
|
||
[NSString stringWithFormat: @"STOR %@", [url path]]];
|
||
[nc addObserver: self
|
||
selector: @selector(_data:)
|
||
name: GSFileHandleWriteCompletionNotification
|
||
object: dHandle];
|
||
[dHandle writeInBackgroundAndNotify: wData];
|
||
}
|
||
}
|
||
else
|
||
{
|
||
if (wData == nil)
|
||
{
|
||
NSData *d;
|
||
|
||
d = [info objectForKey: NSFileHandleNotificationDataItem];
|
||
if ([d length] > 0)
|
||
{
|
||
[self didLoadBytes: d loadComplete: NO];
|
||
[nc addObserver: self
|
||
selector: @selector(_data:)
|
||
name: NSFileHandleReadCompletionNotification
|
||
object: dHandle];
|
||
[dHandle readInBackgroundAndNotify];
|
||
}
|
||
else
|
||
{
|
||
NSNotificationCenter *nc;
|
||
|
||
nc = [NSNotificationCenter defaultCenter];
|
||
if (dHandle != nil)
|
||
{
|
||
[nc removeObserver: self name: nil object: dHandle];
|
||
[dHandle closeFile];
|
||
DESTROY(dHandle);
|
||
}
|
||
[nc removeObserver: self
|
||
name: GSTelnetNotification
|
||
object: cHandle];
|
||
DESTROY(cHandle);
|
||
state = idle;
|
||
|
||
[self didLoadBytes: d loadComplete: YES];
|
||
}
|
||
}
|
||
else
|
||
{
|
||
NSNotificationCenter *nc;
|
||
NSData *tmp;
|
||
|
||
nc = [NSNotificationCenter defaultCenter];
|
||
if (dHandle != nil)
|
||
{
|
||
[nc removeObserver: self name: nil object: dHandle];
|
||
[dHandle closeFile];
|
||
DESTROY(dHandle);
|
||
}
|
||
[nc removeObserver: self
|
||
name: GSTelnetNotification
|
||
object: cHandle];
|
||
DESTROY(cHandle);
|
||
state = idle;
|
||
|
||
/*
|
||
* Tell superclass that we have successfully loaded the data.
|
||
*/
|
||
tmp = wData;
|
||
wData = nil;
|
||
[self didLoadBytes: tmp loadComplete: YES];
|
||
DESTROY(tmp);
|
||
}
|
||
}
|
||
}
|
||
|
||
- (void) endLoadInBackground
|
||
{
|
||
if (state != idle)
|
||
{
|
||
NSNotificationCenter *nc = [NSNotificationCenter defaultCenter];
|
||
|
||
if (dHandle != nil)
|
||
{
|
||
[nc removeObserver: self name: nil object: dHandle];
|
||
[dHandle closeFile];
|
||
DESTROY(dHandle);
|
||
}
|
||
[nc removeObserver: self name: GSTelnetNotification object: cHandle];
|
||
DESTROY(cHandle);
|
||
state = idle;
|
||
}
|
||
[super endLoadInBackground];
|
||
}
|
||
|
||
- (void) loadInBackground
|
||
{
|
||
NSNotificationCenter *nc;
|
||
NSString *host = nil;
|
||
NSString *port = nil;
|
||
NSNumber *p;
|
||
NSFileHandle *sock;
|
||
|
||
/*
|
||
* Don't start a load if one is in progress.
|
||
*/
|
||
if (state != idle)
|
||
{
|
||
NSLog(@"Attempt to load an ftp handle which is not idle ... ignored");
|
||
return;
|
||
}
|
||
|
||
[self beginLoadInBackground];
|
||
host = [url host];
|
||
p = [url port];
|
||
if (p != nil)
|
||
{
|
||
port = [NSString stringWithFormat: @"%u", [p unsignedIntValue]];
|
||
}
|
||
else
|
||
{
|
||
port = [url scheme];
|
||
}
|
||
sock = [NSFileHandle fileHandleAsClientInBackgroundAtAddress: host
|
||
service: port
|
||
protocol: @"tcp"];
|
||
if (sock == nil)
|
||
{
|
||
extern int errno;
|
||
|
||
/*
|
||
* Tell superclass that the load failed - let it do housekeeping.
|
||
*/
|
||
[self backgroundLoadDidFailWithReason: [NSString stringWithFormat:
|
||
@"Unable to connect to %@:%@ ... %s",
|
||
host, port, GSLastErrorStr(errno)]];
|
||
return;
|
||
}
|
||
cHandle = [[GSTelnetHandle alloc] initWithHandle: sock isConnected: NO];
|
||
nc = [NSNotificationCenter defaultCenter];
|
||
[nc addObserver: self
|
||
selector: @selector(_control:)
|
||
name: GSTelnetNotification
|
||
object: cHandle];
|
||
state = cConnect;
|
||
}
|
||
|
||
/**
|
||
* We cannot get/set any properties for FTP
|
||
*/
|
||
- (id) propertyForKey: (NSString*)propertyKey
|
||
{
|
||
return nil;
|
||
}
|
||
|
||
/**
|
||
* We cannot get/set any properties for FTP
|
||
*/
|
||
- (id) propertyForKeyIfAvailable: (NSString*)propertyKey
|
||
{
|
||
return nil;
|
||
}
|
||
|
||
/**
|
||
* Sets the specified data to be written to the URL on the next load.
|
||
*/
|
||
- (BOOL) writeData: (NSData*)data
|
||
{
|
||
ASSIGN(wData, data);
|
||
return YES;
|
||
}
|
||
|
||
/**
|
||
* We cannot get/set any properties for FTP
|
||
*/
|
||
- (BOOL) writeProperty: (id)propertyValue
|
||
forKey: (NSString*)propertyKey
|
||
{
|
||
return NO;
|
||
}
|
||
|
||
@end
|
||
|