Posted by jpluimers on 2016/11/29
It can auto-tweet your status to an ISP.
via:
–jeroej
Posted in Development, Internet, Power User, Python, Scripting, Software Development | Leave a Comment »
Posted by jpluimers on 2016/11/29
A long time ago, Lars Fosdal wrote this on the Delphi G+ group:
It really is beyond me why there is no Project.rc file which includes
- Project.version.rc
- Project.icon.rc
- Project.themes.rc
- Project.manifest.xml
- and so forth.
That way, the .res file would be a compile-time thing (or even a thing of the past) – and the resource linker would assemble the various bits from their individual sources.
It has been an issue forever. Vincent Parrett correctly commented that if you clean out too much out of the Project.res file, the IDE gets confused:
The only thing it is used for is version info and the mainicon (the IDE gets confused if don’t do that).
In my own experience, this isn’t the case for all Delphi versions, but I forgot which versions suffer and which don’t. I think the IDE theming issue omitting the Application word in the .dpr is related.
Like many of the G+ commenters, I’ve switched to script based resources for my own projects a long time ago. That’s also the reason why I forgot: this approach just works for any Delphi version.
This post is a reminder to self to see if the IDE has finally refrained from doing Project.res handling itself.
–jeroen
Source: The curse of the Project.res file…
Some related posts:
Posted in Delphi, Delphi 1, Delphi 10 Seattle, Delphi 2, Delphi 2005, Delphi 2006, Delphi 2007, Delphi 2009, Delphi 2010, Delphi 3, Delphi 4, Delphi 5, Delphi 6, Delphi 7, Delphi XE, Delphi XE2, Delphi XE3, Delphi XE4, Delphi XE5, Delphi XE6, Delphi XE7, Delphi XE8, Development, Software Development | 5 Comments »
Posted by jpluimers on 2016/11/28
Yes. Yes. Yeesssss!
It solves [WayBack] debugging – F12 not working in Delphi debugger on Windows 7/8 – Stack Overflow
Due to robots.txt the site cannot be archived in the WayBack machine, so I’m keeping a local copy of any http://andy.jgknet.de/blog/wp-content/plugins/download-monitor/download.php?id=* files.
This is how I installed the extracted DelphiF12HotKeySupport.dll:
Posted in Delphi, Development, Software Development | Leave a Comment »
Posted by jpluimers on 2016/11/24
Don’t you love relevant documentation…
There is no unit defined for the Vcl.Forms.TApplication.ActionUpdateDelay – RAD Studio API Documentation.
It is used inside the TAppliation.Idle to fire the (undocumented) TApplication.DoActionIdle method. When the value is zero or less, then each Idle call will result in an DoActionIdle call in turn calling TCustomForm.UpdateActions for any visible form.
UpdateActions in turn will call (for the form itself, all the form’s menu items and all the form’s controls) the TControl.InitiateAction which – if there is an associated ActionLink – will call the TBasicActionLink.Update which in turn will call the TBasicAction.Suspended and TBasicAction.Update methods of which the latter will call the TBasicAction.OnUpdate event if it is assigned.
In theory, the OnUpdate method for each action can even be called multiple times (because multiple controls on visible forms can point to it), but the real culprit is that TApplication.Idle as it can be called from these places:
The last three (especially HandleMessage) can be disastrous as they can be called a lot (for instance when moving the mouse), and more often than not, the OnUpdate event handlers aren’t exactly CPU friendly.
A while ago I bumped into an application where the OnUpdate event handler for one action was called half a million time in under 5 minutes.
This clearly indicated a huge problem (besides using a full CPU core slowing down the application) as apparently something was broadcasting Windows Messages like crazy.
Investigating and Solving the message flood is on the back-log with a reasonably high priority, but the highest priority issue was fixing the high CPU usage in the first place.
Apparently more users suffer from this, as there is a Vcl.Forms.TApplication.ActionUpdateDelay property which TApplication.Idle uses to call the Windows API function SetTimer to rate-limit the TApplication.DoActionIdle call tree. Luckily SetTimer does have documentation on the unit of ActionUpdateDelay: it’s milliseconds.
I’ve set it to 10 as that updating the actions ~100 times a second is fast enough for this application.
–jeroen
via:
Posted in Delphi, Delphi 10 Seattle, Delphi 10.1 Berlin (BigBen), Delphi 2007, Delphi 2009, Delphi 2010, Delphi XE, Delphi XE2, Delphi XE3, Delphi XE4, Delphi XE5, Delphi XE6, Delphi XE7, Delphi XE8, Development, Software Development | Leave a Comment »
Posted by jpluimers on 2016/11/24
If I ever need it: function IsRunningFromNetwork that is based on WNetGetConnection.
| function IsRunningFromNetwork(const ServerName:String = 'BetYouCantFindThisServer'): Boolean; | |
| const | |
| pMax = 2047; | |
| var | |
| dt: UINT; | |
| volpath: Array[0..pMax] of Char; | |
| sVol: String; | |
| sz: Cardinal; | |
| begin | |
| Result := False; | |
| dt := GetDriveType(PChar(ExtractFilePath(ParamStr(0)))); | |
| if dt = 4 | |
| then begin | |
| GetVolumePathNameW(PChar(LowerCase(ParamStr(0))), volpath, pMax); | |
| sVol := StrPas(volpath); | |
| if not ((pos(LowerCase(ServerName), sVol) <> 0) or (pos('\\', sVol) = 1)) | |
| then begin | |
| if pos(':', sVol) <> 0 | |
| then begin | |
| sz := pMax; | |
| if WNetGetConnection(pChar(Copy(sVol, 1, 2)), volPath, sz) = NO_ERROR | |
| then Result := (pos(LowerCase(ServerName), LowerCase(StrPas(volPath))) <> 0) or (pos('\\', StrPas(volPath)) = 1); | |
| end; | |
| end | |
| else Result := True; | |
| end; | |
| end; |
Thanks Lars; I copied it to a gist for easier WordPress handling.
–jeroen
via:
Posted in Delphi, Development, Software Development | Leave a Comment »
Posted by jpluimers on 2016/11/23
Too bad Ars Technica redirects https to http while preaching anyone should use https.
Anyway: OS device driver install and network configuration should probably be less automatic than it is now.
All the more reason to go fully https (hello LetsEncrypt, goodbye Embarcadero).
A video showing how it works is below.
The clever device emulates a USB ethernet adapter (that virtually every operating system has default drivers for) then fakes being 1.0.0.1 handing out DHCP address 1.0.0.10 with a netmask of 128.0.0.1 thereby routing almost all network traffic over it.
It makes a tiny peace of the internet unreachable (like 1.0.0.1 itself in Brisbane Australia).
More details on how it works at [WayBack] Samy Kamkar: PoisonTap – exploiting locked computers over USB.
Lets not leave this out:
Securing Against PoisonTap
Server-Side Security
If you are running a web server, securing against PoisonTap is simple:
- Use HTTPS exclusively, at the very least for authentication and authenticated content
- Honestly, you should use HTTPS exclusively and always redirect HTTP content to HTTPS, preventing a user being tricked into providing credentials or other PII over HTTP
- Ensure Secure flag is enabled on cookies, preventing HTTPS cookies from leaking over HTTP
- When loading remote Javascript resources, use the Subresource Integrity script tag attribute
- Use HSTS to prevent HTTPS downgrade attacks
Desktop Security
- Adding cement to your USB and Thunderbolt ports can be effective
- Closing your browser every time you walk away from your machine can work, but is entirely impractical
- Disabling USB ports is also effective, though also impractical
- Locking your computer has no effect as the network and USB stacks operate while the machine is locked, however, going into an encrypted sleep mode where a key is required to decrypt memory (e.g., FileVault2 + deep sleep) solves most of the issues as your browser will no longer make requests, even if woken up
–jeroen
Posted in Development, Hardware Development, Raspberry Pi | Leave a Comment »
Posted by jpluimers on 2016/11/23
Apple fanboys all know about 1 Infinite Loop. Turbo Pascal adepts about the index entries “infinite loop See loop, infinite” and “loop, infinite See infinite loop”.
Google as a more direct approach: www.google.com/search?q=recursion
Posted in Algorithms, Apple, Borland Pascal, Design Patterns, Development, Google, Pascal, Power User, Software Development, Turbo Pascal | Leave a Comment »
Posted by jpluimers on 2016/11/22
Since these files got missing again: [WayBack] Does anybody know where to get ReservedWordsOP.txt and ReservedWordsC.txt for java2OP.exe in bin\converters\java2op for Delphi 10.1 Berlin upd2? It also… – Rik van Kekem – Google+
Here they are:
Posted in Delphi, Delphi 10 Seattle, Delphi 10.1 Berlin (BigBen), Development, Software Development | 2 Comments »
Posted by jpluimers on 2016/11/22
Everybody surely knows about more and more software trying to smart replace straight double quotes " with opening ” and closing ” ones.
WordPress is no exception and when you forget to embed these quotes in code and/or pre tags, your source code won’t paste as such.
For terminal code (nx or Windows console doesn’t matter much): it’s much worse: you should not copy/paste code directly to the terminal.
I usually did this any way to get quotes corrected, but – via Daniela Osterhagen referring Dorin Duminica – recently came across a reason that’s much more important:
What’s on the clipboard might not be what you saw on the web site.
An elaborate example is at User iteraction based exploitation: WYSINWYC (What you see is not what you copy) but it comes down to:
style tags.So basically copy/pasting to the console is just as risky as piping curl through bash or another shell. You can actually detect that server-side (and abuse it)!
–jeroen
Source: Copy-Paste from Website to Terminal
Posted in Console (command prompt window), Development, Power User, Scripting, Software Development, Windows | Leave a Comment »
Posted by jpluimers on 2016/11/22
A while ago, I needed to get the various date, time and week values from WMIC to environment variables with pre-padded zeros. I thought: easy job, just write a batch file.
Tough luck: I couldn’t get the values to expand properly. Which in the end was caused by WMIC emitting UTF-16 and the command-interpreter not expecting double-byte character sets which messed up my original batch file.
| What I wanted | What I got |
|---|---|
|
|
WMIC uses this encoding because the Wide versions of Windows API calls use UTF-16 (sometimes called UCS-2 as that is where UTF-16 evolved from).
As Windows uses little-endian encoding by default, the high byte (which is zero) of a UTF-16 code point with ASCII characters comes first. That messes up the command interpreter.
Lucikly rojo was of great help solving this.
His solution is centered around set /A, which:
Enjoy and shiver with the online help extract:
Read the rest of this entry »
Posted in Algorithms, Batch-Files, Development, Encoding, Floating point handling, Scripting, Software Development, UCS-2, UTF-16, UTF16 | Leave a Comment »
The Wiert Corner - irregular stream of stuff 