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CKWebDAVConnection.m
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CKWebDAVConnection.m
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//
// CKWebDAVConnection.m
// Sandvox
//
// Created by Mike on 14/09/2011.
// Copyright 2011 Karelia Software. All rights reserved.
//
#import "CKWebDAVConnection.h"
@implementation CKWebDAVConnection
+ (void)load
{
[[CKConnectionRegistry sharedConnectionRegistry] registerClass:self forName:@"WebDAV" URLScheme:@"http"];
}
+ (NSArray *)URLSchemes { return [NSArray arrayWithObjects:@"http", @"https", nil]; }
#pragma mark Lifecycle
- (id)initWithRequest:(CKConnectionRequest *)request;
{
if (self = [self init])
{
_session = [[DAVSession alloc] initWithRootURL:[request URL] delegate:self];
_queue = [[NSMutableArray alloc] init];
_transferRecordsByRequest = [[NSMapTable mapTableWithStrongToStrongObjects] retain];
}
return self;
}
- (void)dealloc;
{
[_session release];
[_transferRecordsByRequest release];
[_queue release];
[_currentDirectory release];
[super dealloc];
}
#pragma mark Delegate
@synthesize delegate = _delegate;
#pragma mark Queue
static void *sOpFinishObservationContext = &sOpFinishObservationContext;
- (void)runOperation:(NSOperation *)operation
{
[operation retain]; // disconnecting removes the disconnect op from queue, potentially deallocating it
{{
[operation addObserver:self forKeyPath:@"isFinished" options:0 context:sOpFinishObservationContext];
[operation start];
[self retain]; // so can't be deallocated mid-operation. I have seen this happen
}}
[operation release];
}
- (void)enqueueOperation:(NSOperation *)operation;
{
// Assume that only _session targeted invocations are async
BOOL runNow = [_queue count] == 0;
[_queue addObject:operation];
if (runNow) [self runOperation:operation];
}
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context;
{
if (context == sOpFinishObservationContext)
{
if ([object isFinished])
{
[object removeObserver:self forKeyPath:keyPath];
[_queue removeObjectIdenticalTo:object];
// Run next op
if ([_queue count])
{
[self runOperation:[_queue objectAtIndex:0]];
}
[self release]; // balance out the -retain when the op was started
}
}
else
{
[super observeValueForKeyPath:keyPath ofObject:object change:change context:context];
}
}
#pragma mark Connection
- (DAVSession *)webDAVSession; { return _session; }
- (void)connect;
{
if (!_connected)
{
_connected = YES;
if ([[self delegate] respondsToSelector:@selector(connection:didConnectToHost:error:)])
{
[[self delegate] connection:self didConnectToHost:[[_session rootURL] host] error:nil];
}
}
}
- (void)disconnect;
{
NSInvocationOperation *op = [[NSInvocationOperation alloc] initWithTarget:self
selector:@selector(forceDisconnect)
object:nil];
[self enqueueOperation:op];
[op release];
}
- (void)forceDisconnect
{
// Cancel all in queue
if ([_queue count])
{
[_queue makeObjectsPerformSelector:@selector(cancel)];
[_queue removeAllObjects];
}
if (_connected)
{
_connected = NO;
if ([[self delegate] respondsToSelector:@selector(connection:didDisconnectFromHost:)])
{
[[self delegate] connection:self didDisconnectFromHost:[[[self webDAVSession] rootURL] host]];
}
}
}
- (BOOL)isConnected { return _connected; }
- (void)webDAVSession:(DAVSession *)session didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge;
{
[[self delegate] connection:self didReceiveAuthenticationChallenge:challenge];
}
- (void)webDAVSession:(DAVSession *)session didCancelAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge;
{
[[self delegate] connection:self didCancelAuthenticationChallenge:challenge];
}
- (void)webDAVSession:(DAVSession *)session appendStringToTranscript:(NSString *)string sent:(BOOL)sent;
{
[[self delegate] connection:self appendString:string toTranscript:(sent ? CKTranscriptSent : CKTranscriptReceived)];
}
#pragma mark Requests
- (void)cancelAll { }
- (NSString *)canonicalPathForPath:(NSString *)path;
{
// Heavily based on +ks_stringWithPath:relativeToDirectory: in KSFileUtilities
if ([path isAbsolutePath]) return path;
NSString *directory = [self currentDirectory];
if (!directory) return path;
NSString *result = [directory stringByAppendingPathComponent:path];
return result;
}
- (CKTransferRecord *)uploadFile:(NSString *)localPath toFile:(NSString *)remotePath checkRemoteExistence:(BOOL)flag delegate:(id)delegate
{
return [self uploadFromData:[NSData dataWithContentsOfFile:localPath]
toFile:remotePath
checkRemoteExistence:flag
delegate:delegate];
}
- (CKTransferRecord *)uploadFromData:(NSData *)data toFile:(NSString *)remotePath checkRemoteExistence:(BOOL)flag delegate:(id)delegate;
{
NSParameterAssert(data);
remotePath = [self canonicalPathForPath:remotePath];
DAVPutRequest *request = [[DAVPutRequest alloc] initWithPath:remotePath session:[self webDAVSession] delegate:self];
[request setData:data];
CFStringRef type = UTTypeCreatePreferredIdentifierForTag(kUTTagClassFilenameExtension,
(CFStringRef)[remotePath pathExtension],
NULL
);
CFStringRef mimeType = NULL;
if (type)
{
mimeType = UTTypeCopyPreferredTagWithClass(type, kUTTagClassMIMEType);
CFRelease(type);
}
if (!mimeType) mimeType = CFRetain(CFSTR("application/octet-stream"));
[request setDataMIMEType:(NSString *)mimeType];
CFRelease(mimeType);
[self enqueueOperation:request];
CKTransferRecord *result = [CKTransferRecord recordWithName:[remotePath lastPathComponent] size:[data length]];
[_transferRecordsByRequest setObject:result forKey:request];
[request release];
return result;
}
- (void)createDirectory:(NSString *)dirPath permissions:(unsigned long)permissions;
{
return [self createDirectory:dirPath];
}
- (void)createDirectory:(NSString *)dirPath;
{
dirPath = [self canonicalPathForPath:dirPath];
DAVMakeCollectionRequest *request = [[DAVMakeCollectionRequest alloc] initWithPath:dirPath
session:[self webDAVSession]
delegate:self];
[self enqueueOperation:request];
[request release];
}
- (void)setPermissions:(unsigned long)permissions forFile:(NSString *)path; { /* ignore! */ }
- (void)deleteFile:(NSString *)path
{
path = [self canonicalPathForPath:path];
DAVRequest *request = [[DAVDeleteRequest alloc] initWithPath:path session:[self webDAVSession] delegate:self];
[self enqueueOperation:request];
[request release];
}
- (void)directoryContents
{
NSString *path = [self currentDirectory];
if (!path) path = @"/";
DAVListingRequest *request = [[DAVListingRequest alloc] initWithPath:path
session:[self webDAVSession]
delegate:self];
[self enqueueOperation:request];
[request release];
}
#pragma mark Current Directory
@synthesize currentDirectory = _currentDirectory;
- (void)changeToDirectory:(NSString *)dirPath
{
if ([_queue count])
{
NSInvocation *invocation = [NSInvocation
invocationWithSelector:@selector(connection:didChangeToDirectory:error:)
target:[self delegate]
arguments:[NSArray arrayWithObjects:self, dirPath, nil, nil]];
NSOperation *op = [[NSInvocationOperation alloc] initWithInvocation:invocation];
[self enqueueOperation:op];
[op release];
}
[self setCurrentDirectory:dirPath];
}
#pragma mark Request Delegate
- (void)requestDidBegin:(DAVRequest *)aRequest;
{
if ([aRequest isKindOfClass:[DAVPutRequest class]] &&
[[self delegate] respondsToSelector:@selector(connection:uploadDidBegin:)])
{
[[self delegate] connection:self uploadDidBegin:[aRequest path]];
}
}
- (void)webDAVRequest:(DAVRequest *)aRequest didFinishWithResult:(id)result error:(NSError *)error;
{
if ([aRequest isKindOfClass:[DAVPutRequest class]])
{
CKTransferRecord *record = [_transferRecordsByRequest objectForKey:aRequest];
[record transferDidFinish:record error:error];
[_transferRecordsByRequest removeObjectForKey:aRequest];
if ([[self delegate] respondsToSelector:@selector(connection:uploadDidFinish:error:)])
{
[[self delegate] connection:self uploadDidFinish:[aRequest path] error:error];
}
}
else if ([aRequest isKindOfClass:[DAVMakeCollectionRequest class]])
{
if ([[self delegate] respondsToSelector:@selector(connection:didCreateDirectory:error:)])
{
[[self delegate] connection:self didCreateDirectory:[aRequest path] error:nil];
}
}
else if ([aRequest isKindOfClass:[DAVDeleteRequest class]])
{
if ([[self delegate] respondsToSelector:@selector(connection:didDeleteFile:error:)])
{
[[self delegate] connection:self didDeleteFile:[aRequest path] error:error];
}
}
else if ([aRequest isKindOfClass:[DAVListingRequest class]])
{
if ([[self delegate] respondsToSelector:@selector(connection:didReceiveContents:ofDirectory:error:)])
{
NSString *directory = [aRequest path];
NSMutableArray *contents = [[NSMutableArray alloc] initWithCapacity:[result count]];
for (DAVResponseItem *aResponseItem in result)
{
NSMutableDictionary *attributes = [[aResponseItem fileAttributes] mutableCopy];
if (!attributes) attributes = [[NSMutableDictionary alloc] initWithCapacity:1];
NSString *path = [aResponseItem href];
// Strup out trailing slashes
while ([path hasSuffix:@"/"])
{
path = [path substringToIndex:[path length] - 1];
}
if (![path isEqualToString:directory])
{
path = [path lastPathComponent];
[attributes setObject:path forKey:cxFilenameKey];
[contents addObject:attributes];
}
[attributes release];
}
[[self delegate] connection:self
didReceiveContents:contents
ofDirectory:[aRequest path]
error:nil];
[contents release];
}
}
}
- (void)request:(DAVRequest *)aRequest didSucceedWithResult:(id)result;
{
[self webDAVRequest:aRequest didFinishWithResult:result error:nil]; // CK uses nil errors to indicate success because it's dumb
}
- (void)request:(DAVRequest *)aRequest didFailWithError:(NSError *)error;
{
[[self retain] autorelease]; // hack to keep us alive long enough for full error handling
[[self delegate] connection:self didReceiveError:error];
[self webDAVRequest:aRequest didFinishWithResult:nil error:error];
}
- (void)webDAVRequest:(DAVRequest *)request didSendDataOfLength:(NSInteger)bytesWritten totalBytesWritten:(NSInteger)totalBytesWritten totalBytesExpectedToWrite:(NSInteger)totalBytesExpectedToWrite
{
CKTransferRecord *record = [_transferRecordsByRequest objectForKey:request];
[record transfer:record transferredDataOfLength:bytesWritten];
}
- commandQueue { return nil; }
- (void)cleanupConnection { }
#pragma mark iDisk
+ (BOOL)getDotMacAccountName:(NSString **)account password:(NSString **)password
{
BOOL result = NO;
NSString *accountName = [[NSUserDefaults standardUserDefaults] objectForKey:@"iToolsMember"];
if (accountName)
{
UInt32 length;
void *buffer;
const char *service = "iTools";
const char *accountKey = (char *)[accountName UTF8String];
OSStatus theStatus = SecKeychainFindGenericPassword(
NULL,
strlen(service), service,
strlen(accountKey), accountKey,
&length, &buffer,
NULL
);
if (noErr == theStatus)
{
if (length > 0)
{
if (password) *password = [[[NSString alloc] initWithBytes:buffer length:length encoding:NSUTF8StringEncoding] autorelease];
}
else
{
if (password) *password = @""; // if we have noErr but also no length, password is empty
}
// release buffer allocated by SecKeychainFindGenericPassword
theStatus = SecKeychainItemFreeContent(NULL, buffer);
*account = accountName;
result = YES;
}
else
{
NSLog(@"SecKeychainFindGenericPassword failed %d", theStatus);
}
}
return result;
}
@end