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CKSFTPConnection.m
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CKSFTPConnection.m
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//
// CKSFTPConnection.m
// Sandvox
//
// Created by Mike on 25/10/2011.
// Copyright 2011 Karelia Software. All rights reserved.
//
#import "CKSFTPConnection.h"
#import "CK2SFTPSession.h"
#import "UKMainThreadProxy.h"
@interface CKSFTPConnection () <CK2SFTPSessionDelegate>
@end
#pragma mark -
@implementation CKSFTPConnection
+ (void)load
{
[[CKConnectionRegistry sharedConnectionRegistry] registerClass:self forName:@"SFTP" URLScheme:@"ssh"];
}
+ (NSArray *)URLSchemes { return [NSArray arrayWithObjects:@"ssh", @"sftp", nil]; }
#pragma mark Lifecycle
- (id)initWithRequest:(CKConnectionRequest *)request;
{
if (self = [self init])
{
_session = [[CK2SFTPSession alloc] initWithURL:[request URL] delegate:self startImmediately:NO];
_url = [[request URL] copy];
_queue = [[NSOperationQueue alloc] init];
[_queue setMaxConcurrentOperationCount:1];
}
return self;
}
- (void)dealloc;
{
[_session cancel];
[_session release];
[_url release];
[_queue release];
[_currentDirectory release];
[super dealloc];
}
#pragma mark Delegate
@synthesize delegate = _delegate;
#pragma mark Queue
- (void)enqueueOperation:(NSOperation *)operation;
{
// Assume that only _session targeted invocations are async
[_queue addOperation:operation];
}
#pragma mark Connection
- (CK2SFTPSession *)SFTPSession; { return _session; }
- (void)connect;
{
NSOperation *op = [[NSInvocationOperation alloc] initWithTarget:[self SFTPSession] selector:@selector(start) object:nil];
[self enqueueOperation:op];
[op release];
}
- (void)SFTPSessionDidInitialize:(CK2SFTPSession *)session;
{
// Store current directory ready for when somebody (*cough* open panel) asks for it
[self setCurrentDirectory:[session currentDirectoryPath:NULL]];
if ([[self delegate] respondsToSelector:@selector(connection:didConnectToHost:error:)])
{
[[self delegate] connection:self didConnectToHost:[_url 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
[_queue cancelAllOperations];
NSOperation *op = [[NSInvocationOperation alloc] initWithTarget:self selector:@selector(threaded_disconnect) object:nil];
[self enqueueOperation:op];
[op release];
}
- (void)threaded_disconnect;
{
if ([[self delegate] respondsToSelector:@selector(connection:didDisconnectFromHost:)])
{
id proxy = [[UKMainThreadProxy alloc] initWithTarget:[self delegate]];
[proxy connection:self didDisconnectFromHost:[_url host]];
[proxy release];
}
}
- (void)SFTPSession:(CK2SFTPSession *)session didFailWithError:(NSError *)error;
{
if ([self delegate])
{
id proxy = [[UKMainThreadProxy alloc] initWithTarget:[self delegate]];
[proxy connection:self didReceiveError:error];
[proxy release];
}
}
- (void)SFTPSession:(CK2SFTPSession *)session didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge;
{
[[self delegate] connection:self didReceiveAuthenticationChallenge:challenge];
}
- (void)SFTPSession:(CK2SFTPSession *)session didCancelAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge
{
[[self delegate] connection:self didCancelAuthenticationChallenge:challenge];
}
- (void)SFTPSession:(CK2SFTPSession *)session appendStringToTranscript:(NSString *)string received:(BOOL)received;
{
if (![self delegate]) return;
id proxy = [[UKMainThreadProxy alloc] initWithTarget:[self delegate]];
[proxy connection:self appendString:string toTranscript:(received ? CKTranscriptReceived : CKTranscriptSent)];
[proxy release];
}
#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);
CKTransferRecord *result = [CKTransferRecord recordWithName:[remotePath lastPathComponent] size:[data length]];
//CFDictionarySetValue((CFMutableDictionaryRef)_transferRecordsByRequest, request, result);
remotePath = [self canonicalPathForPath:remotePath];
NSInvocation *invocation = [NSInvocation invocationWithSelector:@selector(threaded_writeData:toPath:transferRecord:)
target:self
arguments:[NSArray arrayWithObjects:data, remotePath, result, nil]];
NSInvocationOperation *op = [[NSInvocationOperation alloc] initWithInvocation:invocation];
[self enqueueOperation:op];
[op release];
return result;
}
- (void)threaded_writeData:(NSData *)data toPath:(NSString *)path transferRecord:(CKTransferRecord *)record;
{
CK2SFTPSession *sftpSession = [self SFTPSession];
NSAssert(sftpSession, @"Trying to write data without having started session");
NSError *error;
CK2SFTPFileHandle *handle = [sftpSession openHandleAtPath:path flags:(LIBSSH2_FXF_WRITE | LIBSSH2_FXF_CREAT) mode:0644 error:&error];
if (handle)
{
BOOL result = [handle writeData:data error:&error];
[handle closeFile]; // don't really care if this fails
if (!result) handle = nil; // so error gets sent
}
if (handle) error = nil; // don't confuse CK!
id proxy = [[UKMainThreadProxy alloc] initWithTarget:[self delegate]];
[proxy connection:self uploadDidFinish:path error:error];
[proxy release];
}
- (void)createDirectory:(NSString *)dirPath permissions:(unsigned long)permissions;
{
return [self createDirectory:dirPath];
}
- (void)createDirectory:(NSString *)dirPath;
{
NSInvocationOperation *op = [[NSInvocationOperation alloc] initWithTarget:self selector:@selector(threaded_createDirectoryAtPath:) object:dirPath];
[self enqueueOperation:op];
[op release];
}
- (void)threaded_createDirectoryAtPath:(NSString *)path;
{
CK2SFTPSession *sftpSession = [self SFTPSession];
NSAssert(sftpSession, @"Trying to write data without having started session");
NSError *error;
[sftpSession createDirectoryAtPath:path mode:(0644 | 0111) error:&error];
}
- (void)setPermissions:(unsigned long)permissions forFile:(NSString *)path; { /* ignore! */ }
- (void)deleteFile:(NSString *)path
{
path = [self canonicalPathForPath:path];
NSOperation *op = [[NSInvocationOperation alloc] initWithTarget:self selector:@selector(threaded_removeFileAtPath:) object:path];
[self enqueueOperation:op];
[op release];
}
- (void)threaded_removeFileAtPath:(NSString *)path;
{
NSError *error;
BOOL result = [[self SFTPSession] removeFileAtPath:path error:&error];
if (result) error = nil;
id proxy = [[UKMainThreadProxy alloc] initWithTarget:[self delegate]];
[proxy connection:self didDeleteFile:path error:error];
[proxy release];
}
- (void)directoryContents
{
NSOperation *op = [[NSInvocationOperation alloc] initWithTarget:self selector:@selector(threaded_directoryContents:) object:[self currentDirectory]];
[self enqueueOperation:op];
[op release];
}
- (void)threaded_directoryContents:(NSString *)path;
{
if (!path) path = @".";
NSError *error;
NSArray *result = [[self SFTPSession] attributesOfContentsOfDirectoryAtPath:path error:&error];
if (result) error = nil; // cause CK handles errors in a crazy way
id proxy = [[UKMainThreadProxy alloc] initWithTarget:[self delegate]];
[proxy connection:self didReceiveContents:result ofDirectory:path error:error];
[proxy release];
}
#pragma mark Current Directory
@synthesize currentDirectory = _currentDirectory;
- (void)changeToDirectory:(NSString *)dirPath
{
[self setCurrentDirectory:dirPath];
NSOperation *op = [[NSInvocationOperation alloc] initWithTarget:self selector:@selector(threaded_changedToDirectory:) object:dirPath];
[self enqueueOperation:op];
[op release];
}
- (void)threaded_changedToDirectory:(NSString *)dirPath;
{
if ([[self delegate] respondsToSelector:@selector(connection:didChangeToDirectory:error:)])
{
id proxy = [[UKMainThreadProxy alloc] initWithTarget:[self delegate]];
[proxy connection:self didChangeToDirectory:dirPath error:nil];
[proxy release];
}
}
- commandQueue { return nil; }
- (void)cleanupConnection { }
@end