December 2019 - Pharo-dev - lists.pharo.org

Recommendation for password encryption?
by Mariano Martinez Peck Sept. 30, 2022

Sept. 30, 2022

Hi guys. Some time ago I asked about the best way to encrypt a password. Some of the recommendations I got was: 1) Generally for passwords you do not write a decrypt method for security purposes (eg you do not want people to be able to reverse engineer the encrypted password easily) 2) put a little salt 3) There is http://www.squeaksource.com/Cryptography/PasswordHashingFFI 4) I should not decrypt password but instead I should compare both encrypted versions to see if they are equal. My scenario is the following. I need to store database passwords in text files. So I don't want to let them as plain text. And while I understand 4), I think it's a different scenario than mine. I know that some database driver may allow you to directly send the encrypted password. But still...I have another similar scenario in which I have to store a password and then send it (unencrypted)...so I kind of really need a bi-directional encryption. Now..I would try to avoid having an external library + FFI. Any ideas what is the best thing I can do? And how could I solve 1) if I want bidirectional like in my case? Thanks in advance, -- Mariano http://marianopeck.wordpress.com

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Re: [Pharo-project] Parsing and navigating Html
by Paul DeBruicker July 16, 2020

July 16, 2020

On 12/05/2010 06:02 AM, pharo-project-request(a)lists.gforge.inria.fr wrote: > From: St?phane Ducasse<stephane.ducasse(a)inria.fr> > Subject: [Pharo-project] Parsing and navigating Html > To:"Pharo-project(a)lists.gforge.inria.fr Development" > <Pharo-project(a)lists.gforge.inria.fr> > Message-ID:<1C53DFD8-3021-4233-BC83-CE8C1EA8D103(a)inria.fr> > Content-Type: text/plain; charset=us-ascii > > Hi > > I would like extract partial information from HTML pages. > So I started to play and fix HTMLParser. > > Now does anybody know alternatives? > > Second, does anybody develop a lib to query HTML structure as with the XMLSupport package? > > Stef The Soup package on SqueakSource.com works OK.

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Re: [Pharo-dev] Contribute to pharo8.0 ?
by Ritesh Saini Feb. 24, 2020

Feb. 24, 2020

Having the same issue. Canât fix! Tried everything :( Regards, Ritesh adsense high paying keywords <https://www.digitalkube.com/highest-paying-adsense-niches/>

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Unnecessary double checks of infinity
by Serge Stinckwich Jan. 22, 2020

Jan. 22, 2020

Hi all, I'm having a look how floats are printed. Why we check two times if a Float is infinite ? A first time in: Float>>printOn: stream base: base ... self isInfinite ifTrue: [ stream nextPutAll: 'Float infinity'. ^ self sign = -1 ifTrue: [ stream nextPutAll: ' negated' ] ]. ... and a second time in: Float>>absPrintExactlyOn: aStream base: base ... self isInfinite ifTrue: [ aStream nextPutAll: 'Float infinity'. ^ self]. ... the same in Float>>absPrintInexactlyOn: aStream base: base ... self isInfinite ifTrue: [aStream nextPutAll: 'Float infinity'. ^ self]. ... Apparently the last two methods are never called when number is infinite. I remove the second checks and apparently nothing breaks (all number tests are still green). Regards, -- Serge Stinckwic h Int. Research Unit on Modelling/Simulation of Complex Systems (UMMISCO) Sorbonne University (SU) French National Research Institute for Sustainable Development (IRD) U niversity of YaoundÃ© I, Cameroon "Programs must be written for people to read, and only incidentally for machines to execute." https://twitter.com/SergeStinckwich

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Interesting bug or feature in exception processing logic
by Denis Kudriashov Jan. 12, 2020

Jan. 12, 2020

Hi. I played a bit with exceptions trying to detect that given block will open the debugger. My idea was to simply catch UnhandledError which normally means that no outer code handles given error and therefore debugger is appeared. For my surprise the following example works from playground but not from the browser editor: [MyTestError signal ] on: UnhandledError do: [ :e | self halt ] In playground you will see the halt. But from the browser the debugger will show MyTestError. After breaking my head I found that there is a difference how scripts are executed in those tools. In Playground it is a deferred action. But in the browser it is evaluated as a deep event processing code (keymap processing) and there is an outer error handler (on: Error do: ) which does some work and passes the exception further (err pass). Following script demonstrates the difference in the error processing logic when there is an outer handler: [ [MyTestError signal ] on: UnhandledError do: [ :e | self halt ] ] on: MyTestError do: [ :z | z pass] Try it from playground. Second line separately will show the halt while all together it will stop at MyTestError signal. Debugging shows that when the outer handler is processed it sets the handler context into the exception and it skips the existing handler for UnhandledError. The question: is it a feature or a bug? Think also how following code should work (unrelated to UnhandledError logic): [ [ 1/0 ] on: MyTestError do: [ :e | self halt ] ] on: ZeroDivide do: [ :z | MyTestError signal ] Currently it will show MyTestError signal. Best regards, Denis

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pharo compiler on scientific notation
by Nicolas Anquetil Jan. 6, 2020

Jan. 6, 2020

In pharo 7, inspecting: 1.0e3333 gives: "Reading a number failed -> " it works for: 1.0e333 (only three "3") is that the expected behaviour ? nicolas -- Nicolas Anquetil RMod team -- Inria Lille

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Happy new year!
by Esteban Lorenzano Jan. 1, 2020

Jan. 1, 2020

Hi, Just that, happy new year to everybody! :) For 2020, letâs make a great Pharo 8 release and an even better Pharo 9. Cheers! Esteban

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Pharo Launcher on MacOS Catalina?
by Michael Rueger Dec. 30, 2019

Dec. 30, 2019

Happy Holidays! Hope nobody is working ;-) Just downloaded the Pharo launcher from the Pharo web site and get the attached error. MacOS Catalina Seems Apple has been busy inflicting more pain on developers? Cheers Michael

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Spec row height for list of custom widgets
by Ben Coman Dec. 26, 2019

Dec. 26, 2019

I'm trying to adapt this example from the Spec booklet... ListPresenter new displayBlock: [ :x | x buildWithSpec ]; items: ('Files' asPackage classes collect: [:cls | ButtonPresenter new icon: cls systemIcon; label: cls name]); openWithSpec to use my own presenter rather than ButtonPresenter, but it seems to be only showing the first line of my presenter. How can the height of each list row be changed. i.e. for the able sample code, how to make the buttons taller? cheers -ben

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[Pharo 8.0] Build #1089: Test for hasLiteralThorough
by ci-pharo-ci-jenkins2＠inria.fr Dec. 20, 2019

Dec. 20, 2019

There is a new Pharo build available! The status of the build #1089 was: SUCCESS. The Pull Request #5400 was integrated: "Test for hasLiteralThorough" Pull request url: https://github.com/pharo-project/pharo/pull/5400 Issue Url: https://github.com/pharo-project/pharo/issues/5154 Build Url: https://ci.inria.fr/pharo-ci-jenkins2/job/Test%20pending%20pull%20request%2…

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