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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘.NET’ Category

WinSCP can be embedded and scripted as can PSFTP but not FileZilla

Posted by jpluimers on 2016/12/01

In a quest to perform SFTP in Delphi next to FTP, I first researched what I was up against. A tiny voice in the back of my head said “SFTP is totally unlike FTP” and it was right: SFTP means SSH File Transfer Protocol, not Simple File Transfer Protocol nor FTP over SSH nor FTP over SSL aka FTPS – the latter is supported by Indy but the former isn’t.

I decided against SecureBlackBox (providing SFTPBlackbox) and IPWorks (SSH) as I tried both a while ago for S/MIME support and was disappointed about both the lack of features and documentation; in the end I went for wrapping OpenSSL for the “encrypt-then-sign” process and Indy for the SSMTP part. The merger of the SecureBlackBox and IPWorks made me even less happy.

The Chilkat alternative for SFTP isn’t too compelling either: ActiveX or DLL black-box without a lot of insight on how many people do use it.

So when I had to do SFTP and knew there are no free or open source SFTP components for Delphi available I opted for thinking outside the Delphi realm.

My basic idea was to embed either of these:

  1. Filezilla (as Filezilla on Windows is waaaay faster than WinSCP)
  2. WinSCP (a Windows SCP and SFTP client written in C++ Builder)
  3. PSFTP (the Putty SFTP client)

FileZilla

FileZilla internally uses FzSFtp.exe which is based on PSFTP code (but with some buffers making it faster than PSFTP or WinSCP).

According to the author, neither FzSFtp.exe nor FileZilla can be automated:

FileZilla cannot make any automated transfers at all. Neither FileZilla.exe nor fzsftp.exe (is for SFTP) can be used for any batch processing.

Source: run filezilla tzsftp from batch command line – FileZilla Forums

The WinSCP author commented in a similar fashion:

FileZilla does not have any command line arguments (nor any other way) that allow automatic transfer.

Source: windows – Command line option to download file in FileZilla – Stack Overflow

In addition, FileZilla is always a GUI program, so running it as a console app (which I’d prefer) would be impossible.

WinSCP

WinSCP can be automated in two ways:

  1. The WinSCP.exe command-line allows for a /console and /script switch enabling scripting mode that you can use for Scripting and Task Automation :: WinSCP
  2. A wrapper around WinSCP.exe is availble as WinSCP .NET Assembly and COM Library :: WinSCP which requires both .NET to be installed and (from Delphi) calling through COM which I don’t like much

Since I already had good Delphi wrapping code round starting/waiting-for running processes, I’d opt for using WinSCP.com scripting.

There used to be wrapping code around: Use with Delphi :: Support Forum :: WinSCP

PSFTP

These Using PSFTP to transfer files securely links should get me going:

Chapter 6: Using PSFTP to transfer files securely

Practical examples:

Source locations

For my own reference, the open source locations:

Some semi-random Delphi SSL related postss

During the search above I found the below links that will be useful to me one day:

–jeroen

Posted in .NET, Delphi, Development, Software Development, SSH, TCP | 5 Comments »

Unity IoC container: tips, tricks and dirty hacks

Posted by jpluimers on 2016/11/03

The #Fellows | Unity IoC container: tips, tricks and dirty hacks post is a very readable and to-the-point introduction to Unity IoC focussing on Dependency Injection. Implementation details of various IoC/DI frameworks differ, so some keywords:

  • Container
  • InjectionConstructor
  • InjectionProperty
  • Inversion of Control
  • Named registration (or keyed registration)
  • PerResolveLifetimeManager
  • Register
  • RegisterType
  • Resolve
  • ResolvedParameter

–jeroen

Posted in .NET, Software Development, Development, C#, C# 3.0, C# 4.0, .NET 4.5, C# 5.0, .NET 3.5, .NET 2.0, .NET 3.0, .NET 4.0, C# 6 (Roslyn) | Leave a Comment »

nst/JSONTestSuite: A comprehensive test suite for RFC 7159 compliant JSON parsers

Posted by jpluimers on 2016/11/01

Cool: nst/JSONTestSuite: A comprehensive test suite for RFC 7159 compliant JSON parsers

Which is the result of the presentation seriot.ch – Parsing JSON is a Minefield 💣[WayBack]

Both the tests and presentation are well worth reading.

The graph gives me ambivalent feelings and make me wonder how various .NET and Delphi based JSON parsers stack up.

I wonder how Delphi and C# libraries stack up against these results especially since questions like What is the best JSON library to use for Delphi 10.1? To read and write JSON. – Godfrey Fletcher – Google+ [WayBack].

Hopefully the results by David Berneda will be published soon: I’ll do a quick test with TeeBI json import and the different libraries (System.Json, SuperObject etc)

Edit: Stefan Glienke mentioned he wrote a DUnit testsuite at http://pastebin.com/k5ktBxh9 [WayBack] that shows the built-in TJSONObject [WayBack] parser fails at least 25 of the tests.

–jeroen

via: David Berneda – Google+ [WayBack]

Read the rest of this entry »

Posted in .NET, C#, Delphi, Development, JavaScript/ECMAScript, JSON, Scripting, Software Development | 1 Comment »

Offline Installer :: JetBrains Developer Community

Posted by jpluimers on 2016/10/06

DotPeek offline installers are available:

They are loacated on this page, as ‘Other distribution options’: http://www.jetbrains.com/decompiler/download/

–jeroen

via Offline Installer :: JetBrains Developer Community.

Posted in .NET, C#, Development, Reflection, Software Development | Leave a Comment »

If you thought you could do multi-threading, then play “The Deadlock Empire” games

Posted by jpluimers on 2016/10/04

Slay dragons, learn concurrency! Play the cunning Scheduler, exploit flawed programs and defeat the armies of the Parallel Wizard.

Source: The Deadlock Empire

Via: Face the dragon. Learn the ropes of concurrent programming. – Lars Fosdal – Google+

Source code is available and focuses on C#; maybe one day I’ll make a Delphi version: deadlockempire/deadlockempire.github.io: The Deadlock Empire: Slay dragons, learn concurrency!

BTW: a great book (with nice illustrations at both github and kernel.org) is Source: Is Parallel Programming Hard, And, If So, What Can You Do About It? [WayBack]

–jeroen

Posted in .NET, C#, Delphi, Development, Multi-Threading / Concurrency, Software Development | Leave a Comment »

 
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