FileManager replacement for Local, iCloud and Remote (WebDAV/FTP/Dropbox/OneDrive) files -- Swift

This is my example code for os x:

import Cocoa
import FileProvider

class ViewController: NSViewController {
    
    @IBOutlet weak var writeText: NSTextField!
    @IBOutlet weak var textSavedFromFile: NSTextField!
    @IBOutlet weak var folderList: NSTextField!
    
    var webdavFile: WebDAVFileProvider?
    var operation: OperationHandle?
    
    @IBAction func saveText(_ sender: NSButton) {
        let user = "[email protected]"
        let password = "xxxx"
        
        let credential = URLCredential(user: user, password: password, persistence: .forSession)
        let myUrlWebdav = URL(string: "https://webdav.pcloud.com")
        let webdavFile = WebDAVFileProvider(baseURL: myUrlWebdav!, credential: credential)
        let path = "newFile1.txt"
        let nameFolder = "Text"
        let atFolder = "/"
        let atFile = atFolder + nameFolder + atFolder + path
        
        print(atFile)

        if writeText.stringValue != "" {
            let data = writeText.stringValue.data(using: .utf8)
            print("Data is: \(data)")
            
            webdavFile?.create(folder: nameFolder, at: atFolder, completionHandler: { error in
                if error == nil {
                print("La cartella è stata creata con successo.")
                }
                else
                {
                print("La cartella non è stata creata con il seguente errore: \(error)")
                }
                webdavFile?.writeContents(path: atFile, contents: data, atomically: false, overwrite: false, completionHandler: { error in
                    if error == nil {
                        print("Il file è stato creato con successo.")
                    }
                    else
                    {
                        print("Il file non è stato creato con il seguente errore: \(error)")
                    }
                })
            
            })
        }
        
    }

    @IBAction func readText(_ sender: NSButton) {
        
    }
    
    @IBAction func folderList(_ sender: NSButton) {
        
    }
    

    override func viewDidLoad() {
        super.viewDidLoad()
        
        // Do any additional setup after loading the view.
        webdavFile?.delegate = (self as! FileProviderDelegate)
    }

    override var representedObject: Any? {
        didSet {
        // Update the view, if already loaded.
        }
    }

    func fileproviderSucceed(_ fileProvider: FileProviderOperations, operation: FileOperationType) {
        switch operation {
        case .copy(source: let source, destination: let dest):
            print("\(source) copied to \(dest).")
        case .remove(path: let path):
            print("\(path) has been deleted.")
        default:
            print("\(operation.actionDescription) from \(operation.source!) to \(operation.destination) succeed")
        }
    }
    
    func fileproviderFailed(_ fileProvider: FileProviderOperations, operation: FileOperationType) {
        switch operation {
        case .create(path: let pathFile):
            print("create file: \(pathFile) failed.")
        case .modify(path: let pathFile):
            print("modify file: \(pathFile) failed.")
        case .copy(source: let source, destination: let dest):
            print("copy of \(source) failed.")
        case .remove:
            print("file can't be deleted.")
        default:
            print("\(operation.actionDescription) from \(operation.source!) to \(operation.destination) failed")
        }
    }
    
    func fileproviderProgress(_ fileProvider: FileProviderOperations, operation: FileOperationType, progress: Float) {
        switch operation {
        case .copy(source: let source, destination: let dest):
            print("Copy\(source) to \(dest): \(progress * 100) completed.")
        case .create(path: let pathFile):
            print("Create file or folder to \(pathFile): \(progress * 100) completed.")
        default:
            break
        }
    }
}

My problems are:

1. If I do not use "create folder" and the folder does not exist the file is not created without any error.
2. If the directory exists the file is created, but without any information.
3. It does not work the delegate method.

Can anyone change the code so that it works? Thank you Cesare Piersigilli

I have this method:

func upLoadMultiPhotoWithAddChild(folder:String, namePhotos:[String], completion: GeoCompletionHandler) -> Progress {
        progress = Progress(totalUnitCount: Int64(namePhotos.count)*2)
        for namePhoto in namePhotos {
            guard progress?.isCancelled != true else {
                return progress!
            }
            let createProgress = webdav?.create(folder: "test", at: "/", completionHandler: { (error) in
                if let error = error {
                    if self.handleWebdavError(error: error).errorCode != 405 {
                        completion!(self.handleWebdavError(error: error))
                        return
                    }
                }
                let copyProgress = self.webdav?.copyItem(localFile: namePhoto.toLocalURL(), to: namePhoto.toRemotePath(destFolder: "test"), completionHandler: { (error) in
                    if let error = error {
                        completion!(self.handleWebdavError(error: error))
                        return
                    }
                    completion!(GeoErrorStruct())
                })
                // Add the copyProgress task's progress as a child to the overall progress.
                self.progress?.addChild(copyProgress!, withPendingUnitCount: 1)
            })
            // Add the writeProgress task's progress as a child to the overall progress.
            progress?.addChild(createProgress!, withPendingUnitCount: 1)
        }
        return progress!
    }

In my View Controller:

@IBAction func uploadMultiPhoto(_ sender: UIButton) {
        WebdavHelper.shared.setWebdav()
        progressView.setProgress(0, animated: true)
        let progress = WebdavHelper.shared.upLoadMultiPhotoWithAddChild(folder: "test", namePhotos: namePhotos) { (geoError) in
            if geoError.errorCode == nil {
                print("Upload foto riuscito.")
            }
        }
        progressView.observedProgress = progress
    }

Unfortunately, even if the upload of the photos has been properly completed, progressView never reaches 1, that is at the end: why? Where am I wrong?

I'd like to check the credentials within the app (URL, user and password), but if the URL is wrong here's what I get: error.errorDescription = "A server with the specified hostname could not be found" Therefore I thought I could replace it with if let error = error as? FileProviderWebDavError { in order to have the exact error number but I get nil and I'm not able to handle the error. Any idea? Best Regards.

I am getting an error when trying to upload using a file using a FTP handler. Here is the function that I am calling:

func sendDataToServer(_ file: URL){
        let credentials = URLCredential(user: "sample", password: "sample", persistence: .forSession)
        
        let host = URL(string: "ftp://ftp.site.com")!
        let ftpProvider = FTPFileProvider(baseURL: host, passive: false, credential: credentials)!
        
        ftpProvider.copyItem(localFile: file, to: "/directory/test.csv", overwrite: true, completionHandler: { (error) in
            print(error?.localizedDescription ?? "no error")
        })
    }

Once this is executed I get the following error:

Invalid sequence of commands (AUTH SSL/TLS required prior to authentication).

Could you advise on what the next steps would be for this?

Thanks in advance!

So the problem is that I'm currently working on a project and when I was testing it on iOS 9, everything was fine , but when we updated the devices to iOS 11, every FTP data connection request times out.

Hi amosavian,

first of all I would like to thank you! This library is awesome.

However, I think I found an issue which may happen with server responses. Long time ago I developed a small http-server and discovered that not all servers are "literally" following the specification. Sometimes there is whitespaces missing or just a dash inserted so that the parser gets confused. I am not sure if this is the case here. Maybe you could have a look at this:

In the

func ftpRetrieve(_ task: filePath: from position: length: onTask: onProgress: completionHandler:)

the framework calls the closure

{ (response, error) in
                                        
           do {
                        if let error = error {
                            throw error
                        }
                        
                        guard let response = response else {
                            throw self.urlError(filePath, code: .cannotParseResponse)
                        }
                        
                        if !(response.hasPrefix("1") || response.hasPrefix("2")) {
                            throw FileProviderFTPError(message: response)
                        }
  
     
                    } catch {
                        self.dispatch_queue.async {
                            completionHandler(error)
                        }
                 }

I was curious what happened, because "officially" the connection timed out. I did a debug-dump of the variable response. The result was:

200 Type set to I\r\n350 Restarting at 0. Send STORE or RETRIEVE to initiate transfer\r\n227 Entering Passive Mode (212,227,24,12,218,208).

So it looks like the server works properly and accepts the calls from your framework. Is this probably a case which could be covered by this framework?

Or did I misunderstand how it works? Because I assume the callback is correct. But no data is being transmitted, the frameworks stops with a timeout.

I'm trying to use FTPFileProvider with latest iOS public beta and XCode public beta. I am able to read contents of files on FTP server but when I call some of the methods like isRechable(), recursiveList(), attributesOfItem() then it doesn't seem to work and also I get some errors.

Here is the simple piece of code I've written in viewDidLoad()

    let credential = URLCredential(user: "seenu", password: "mypassword", persistence: .permanent)
    let ftpProvider = FTPFileProvider(baseURL: URL(string: "ftp://192.168.0.3:21")!, credential: credential)
    ftpProvider?.delegate = self as FileProviderDelegate
    ftpProvider?.contents(path: "HD/Photos/test.jpg", completionHandler: { (data, error) in
        DispatchQueue.main.async {
            self.image.image = UIImage(data: data!)
            print("Image has been read using ftpProvider")
        }
    })
    
    ftpProvider?.isReachable(completionHandler: {bool in
        print("ftp is rechable: \(bool)");
    })
    
    ftpProvider?.recursiveList(path: "HD/Photos", useMLST: false, completionHandler: {
        contents, error in
        for file in contents {
            print("Name: \(file.name)")
            print("Size: \(file.size)")
            print("Creation Date: \(file.creationDate)")
            print("Modification Date: \(file.modifiedDate)")
        }
    })
    
    ftpProvider?.attributesOfItem(path: "HD/Photos/test.jpg", completionHandler: {
        attributes, error in
        if let attributes = attributes {
            print("File Size: \(attributes.size)")
            print("Creation Date: \(attributes.creationDate)")
            print("Modification Date: \(attributes.modifiedDate)")
            print("Is Read Only: \(attributes.isReadOnly)")
        }
    })
    
    ftpProvider?.contents(path: "HD/test.txt", completionHandler: {
        contents, error in
        if let contents = contents {
            print("File content is: \(String(data: contents, encoding: .utf8))") // "hello world!"
        }
    })

Reading the test.jpg and test.txt file works fine but the other calls doesn't given any output. Below is the console output.

2017-08-01 00:18:29.450605-0400 ftp[1183:64255] [] nw_connection_fillout_tcp_statistics 1 Connection is not ready 2017-08-01 00:18:29.450846-0400 ftp[1183:64255] [] tcp_connection_get_statistics Failed to get statistics from connection 2017-08-01 00:18:29.456293-0400 ftp[1183:64255] [] nw_connection_fillout_tcp_statistics 2 Connection is not ready 2017-08-01 00:18:29.456840-0400 ftp[1183:64255] [] tcp_connection_get_statistics Failed to get statistics from connection 2017-08-01 00:18:29.460717-0400 ftp[1183:64255] [] nw_connection_fillout_tcp_statistics 3 Connection is not ready 2017-08-01 00:18:29.461325-0400 ftp[1183:64255] [] tcp_connection_get_statistics Failed to get statistics from connection ftp is rechable: false 2017-08-01 00:18:29.490551-0400 ftp[1183:64272] TIC TCP Conn Missing Error [3:0x60400016f600]: Generating 1:54 2017-08-01 00:18:29.490794-0400 ftp[1183:64272] TIC Read Status [3:0x60400016f600]: 1:57 Image has been read using ftpProvider File content is: Optional("Hello world !!") 2017-08-01 00:20:29.543466-0400 ftp[1183:81206] TIC TCP Conn Missing Error [1:0x60000016e1c0]: Generating 1:54 2017-08-01 00:20:29.544054-0400 ftp[1183:81206] TIC TCP Conn Missing Error [2:0x60000016e4c0]: Generating 1:54

Let me know if I'm doing something wrong or is it some genuine problem ?

So I've started playing with the WebDav file provider, to see how that fares, and I ran into a bit of an issue or question really.

Say I make a call to list the contents of a directory with a path: "/data/Hello/Settings/background"

Everything works, and looks OK, at first glance. Except if I look at the relative path of the FileObjects I got back, its got paths like: "/remote.php/dav/files/skela/remote.php/dav/files/skela/data/Hello/Settings/background/portrait_phones.pdf"

That to me seems wrong, for instance in Dropbox, all the paths are relative and would be for example: "/data/Hello/Settings/background/portrait_phones.pdf"

Is this a design choice, or a possible issue ? Just asking because it feels wrong to me.

Again, really appreciate the work you do on this library!

I tried to login to my FTP server and get this error:

"220-You are user number 1 of 50 allowed.\r\n220-Local time is now 09:40. Server port: 21.\r\n220-This is a private system - No anonymous login\r\n220 You will be disconnected after 15 minutes of inactivity.\r\n331 User ****** OK. Password required"

Please help!

When executing contentsOfDirectory on my FTP server I get occasional failures with error code -1 and errorDescription 220 Welcome to IC Co. FTP Site. This seems like an instability as it happens totally randomly and quite frequently. Is there anything I can try?

Using your Sample-iOS.swift, which I modified to perform the tests, I understood that with the functions webdav?.writeContents (path:, webdav?.copyItem (path: and webdav.copyItem (localfile: I get two notifications and the progress of the variable after reaching 1.0 return to 0.75 and then return to 1.0. How can I resolve?

Moreover, setting wrong values to server, user or password variables the function doesn't end but keep on going.

I performed the tests on pcloud.com.

You can see what I reported by downloading the XCODE 9 file here and pressing the "Download File" or "Upload File with copy item" or "Upload File write contents" button from the application.

I doing something wrong?

• fixed issue with missing auth token in searchFiles request
• cleaned up a lot of warnings
• fixed several issues in OneDriveFileProvider ** fixed restore of provider ** fixed issue where searching for an empty string would throw an error ** fixed searching for files at a path ** fixed reachability check

Is this package designed to be compatible with Linux? According to SwiftPackageIndex, it's currently failing to compile due to it not importing FoundationNetworking.

https://swiftpackageindex.com/amosavian/FileProvider

It would be great to use this package on server-side Swift to load files over FTP.

the same credentials "ftps://site.com:21" with username and password, are working successfully in FileZilla, but using FTPFileProvider the connection is never established. (I'm aware that ftps usually uses 990, but my provider forces me onto 21 even for FTPS).

any suggestions?

Hello, I am using FTPFileProvider for downloading and uploading files from FTP server , but it is working for only few networks, can you please let me know if I want to make any additional settings in code? Thanks