February 2018 - 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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Pharo 7 and Traits ?
by Sven Van Caekenberghe June 14, 2018

June 14, 2018

Hi, So what is the story with Pharo 7 and Traits ? I may be wrong, but were they not removed but flattened ? How are external libraries that want to support multiple Pharo versions supposed to cope when they need to add extension methods to (meta) class ? I have a problem with STON. Sven

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Soup Bug? Pre Tags Should Be Nestable
by Sean P. DeNigris May 19, 2018

May 19, 2018

I did some research and don't see any restriction on nested pre tags, yet Soup includes <pre> in "NonNestableBlockTagsForHtml". This causes the following to be parsed as two sibling <pre> tags: <pre> Hi there <pre> This act shall take effect immediately. </pre> </pre> Moving <pre> from NonNestableBlockTagsForHtml to NestableBlockTagsForHtml seems to be The Right Thing To Do. Any objection (I'm certainly not an HTML expert). If not, I'll commit to my GH fork and feel free to merge back to StHub or wherever. ----- Cheers, Sean -- Sent from: http://forum.world.st/Pharo-Smalltalk-Developers-f1294837.html

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Athens based game worked on windows and pharo 60 :)
by stepharong May 2, 2018

May 2, 2018

Hi esteban Today during the labs at the university, we verified with the latest VM on windows that the athens based game that the students were improving is working with Pharo 60 (while some weeks ago when they tried it did not). Stef --

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Pavel's ChangeLog week of 2018-02-05
by Pavel Krivanek April 17, 2018

April 17, 2018

Hi, among other less interesting things, I spent some time on existing PosixSharedMemory project. It is a UFFI binding for the LibC methods that provide support for the memory allocation between several separate processes. I significantly improved the performance by implementing the block access. Writing of 10MB byte array takes about 1 millisecond, reading of it from other image took me about 4 milliseconds. While serialization with Fuel is very fast, it opens interesting possibilities. To have a shared memory without synchronization tools is not very useful so I wrote a basic UFFI interface for the POSIX named semaphores. They are quite easy to use and work nicely with Pharo. The VM can all wait on the semaphore or it can check the status of it periodically in an image thread. It has two small disadvantages. It requires to dynamically link the next library (pthread) and they must be cleaned manually. I plan to look at System V alternative in future. Now we should write a nice framework for inter-image communication on top of it or/and adopt Seamless for it ;-) Cheers, -- Pavel

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Change Pharo window icon
by Vincent.Blondeau＠lamresearch.com April 14, 2018

April 14, 2018

Hi, I would like to know how to change the main Pharo window icon. I saw that there is a primitive for the title: DisplayScreen class >> primitiveWindowTitle:string: ; primitive: 'primitiveHostWindowTitle' module:'HostWindowPlugin' but I cannot find one for the icon. Should another primitive need to be implemented? Thanks! Vincent

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Metacello/Iceberg Error: IceUndefinedRemote DNU #projectPath
by Sean P. DeNigris April 9, 2018

April 9, 2018

I was loading a project via: Metacello new baseline: 'BabyPhexample'; repository: 'github://seandenigris/Baby-Phexample/repository'; onConflict: [ :ex | ex allow ]; load. into a Moose 6.1 image obtained from Launcher which already contained StateSpecs and got this: IceUndefinedRemote(Object)>>doesNotUnderstand: #projectPath IceMetacelloRepositoryAdapter>>projectPath IceMetacelloRepositoryAdapter>>hasNoLoadConflicts: MetacelloRepositorySpec>>hasNoLoadConflicts: MetacelloRepositoriesSpec>>hasNoLoadConflicts: MetacelloMCBaselineOfProjectSpec(MetacelloGenericProjectSpec)>>hasNoLoadConflicts: MetacelloMCBaselineOfProjectSpec(MetacelloMCProjectSpec)>>hasNoLoadConflicts: MetacelloMCBaselineOfProjectSpec(MetacelloProjectSpec)>>hasLoadConflicts: MetacelloMCBaselineOfProjectSpec(MetacelloMCProjectSpec)>>hasConflictWithBaselineSpec: MetacelloMCBaselineOfProjectSpec>>hasConflictWithProjectSpec: MetacelloProjectRegistration>>hasLoadConflicts: Ideas? ----- Cheers, Sean -- Sent from: http://forum.world.st/Pharo-Smalltalk-Developers-f1294837.html

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AnnouncementSubscription and Ephemerons
by Torsten Bergmann April 2, 2018

April 2, 2018

Hi, by accident I stumbled upon the following code in AnnouncementSubscription: makeWeak action isBlock ifTrue: [ self error: 'Not currently available due to missing ephemerons support']. ... My understanding is that we have Ephemeron support in Pharo now working. Right? Anyone with more insights who knows how to fix/complete this? Should we at least open an issue? Thx T.

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Some segfault crashes and freezes when trying to re-run saved pharo 7 images
by Thomas Dupriez March 28, 2018

March 28, 2018

Hello, I've had a few issues with Pharo 7 lately. After downloading pharo 7 images, doing some work in them and saving them, the images either instantly crashe or freeze when I try to re-run them. If that helps, I was working with and on the calypso browser. Attached are the crash dump files from some of these faulty images. vm version: 201708271955 image version: 6521 OS: Ubuntu 16.04 LTS Cheers, Thomas

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