November 2016 - 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

9 26

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.

3 4

new pharo cheatsheet
by stepharo March 8, 2018

March 8, 2018

new cheatsheet for Pharo syntax. Any feedback is welcome Stef

18 33

FFIIntegerTypes inheritance hierarchy
by Ben Coman Nov. 28, 2017

Nov. 28, 2017

I'm looking through the keyhole at something new to me, so maybe this is off base, but looking at the inheritance hierarchy... FFIIntegerType FFIUint16 FFIUint16 FFIUInt32 FFIInt32 FFIUint64 FFIInt64 FFIUint8 FFIInt8 I'm curious... why the all the Ints inherit from the UInts? Each of those classes has the same two methods #basicHandle:at: and #basicHandle:at:put. So the Int subclasses fully override the superclass methods. So there in no inherited behaviour on the instance side. On the class side, I see #externalTypeSize is inherited by the Ints, but evaluating... FFIIntegerType allSubclasses collect: [ :class | class externalType byteSize -> class externalTypeSize ] produces... 4->4 2->2 4->4 8->8 1->1 2->2 4->4 8->8 1->1 So naively the extra inheritance level seems unnecessary and perhaps having... FFIIntegerType class >> externalTypeSize ^ self externalType byteSize would allow the hierarchy to be flattened. Maybe not a great benefit, except to avoid the next person wondering the same thing :P Also, it is surprising that that FFUInt64 uses #signedLongLongAt: rather than #unsignedLongLongAt: . This seems on-purpose rather than accidental since its inherited by FFIInt64, so it seems there is something interesting to learn here that would benefit a method comment. cheers -ben

2 2

Layout in bloc
by Alexandre Bergel Nov. 25, 2017

Nov. 25, 2017

Hi! I am working on a popup support in Bloc and I am facing a problem. Consider the following code: -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= space := BlSpace new. space root layout: BlLinearLayout horizontal. 10 timesRepeat: [ | e | e := (BlRectangle new extent: 20 @ 20) asElement. e background: Color random. space root addChild: e ]. space root children withIndexDo: [ :e :index | e translateBy: (index * 30) @ 10 ]. space root children do: [ :e | e addEventHandler: (BlEventHandler on: BlMouseEnterEvent do: [ :evt | | txt | txt := BlText new position: evt position; fill: Color red; text: 'Hello World'. e parent addChild: txt ]). ]. space show -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= If you uncomment the second line (âspace root layout:â¦â), then the string hello world is added text to the element in which the mouse enter. With the layout, the string is added at the end of the line. I like very much the idea of having the layout applied when elements are added (even I suspect we may have scalability issues very soon), but in that situation, this is not wished. Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

3 4

Catalog statistics (Who know this projects?)
by Esteban Lorenzano Aug. 22, 2017

Aug. 22, 2017

Soâ¦ I took a couple of minutes to do a small list of project description status: >From a total of 379 projects currently in the catalog, just 115 have a description and/or keywords associated. Which means 264 are mysterious projects nobody can guess what are they about. I was thinking most of this projects would be in Unsorted (or Pharo 3), but I found that many are also on Pharo 5 and 4â¦. which is frankly unacceptable :) Even very important projects like Seaside or Garage and Glorp are not documented. So, please peopleâ¦ take a look at your projects and PLEASE, provide a description and proper keywordsâ¦ Nobody can guess what is Aconcagua (besides a cool mountain in south america), or Telescope, etc., etc., etc. Here the list of non-documented projects: http://smalltalkhub.com/mc/Pharo/MetaRepoForPharo50/main --- 'A4BP' 'Aconcagua' 'BootstrapMagritte' 'Chalten' 'CommandShell' 'Cormas' 'DependencyAnalyser' 'FamixJS' 'FontAwesome' 'Garage' 'GarageConnectionPool' 'GarageGlorp' 'Glorp' 'Grease' 'IniModules' 'Kendrick' 'Magritte3' 'MagritteMagic' 'MetaBoardBoard' 'MyFirstWebApp' 'NBOpenGL' 'NeoJSON' 'OSProcess' 'PetitParser' 'Phexample' 'Pier3' 'Pier3AddOns' 'ProcessWrapper' 'RewriteTool' 'Seaside3' 'SimplePersistence' 'Ston' 'Telescope' 'Woden' âXtreams' http://smalltalkhub.com/mc/Pharo/MetaRepoForPharo40/main --- 'AconcaguaDeluxe' 'AthensSVG' 'Autotest' 'CPanel' 'CreativeCommonsLive' 'DevFlow' 'EventRecorder' 'ExtendedNumberParser' 'ExternalWebBrowser2' 'FixedDecimal' 'Ghost' 'GraphViz' 'Gravatar' 'Hubcap' 'Infinity' 'Mandrill' 'Mathex' 'MemoryMonitor' 'MinimalConnectors' 'Mocketry' 'MongoTalk' 'NBSQLite3' 'NumericalMethods' 'ODBC' 'OSOSX' 'OSWindows' 'PackageDependenciesAnalysis' 'PharoLauncher' 'PlagueDoctor' 'Pomodoro' 'RemoteAnnouncement' 'SandstoneDb' 'Scheduler' 'ScriptManager' 'Shapes' 'SmallUML' 'Spreadsheet' 'Spy' 'StateSpecs' 'SuffixConditionals' 'Teachable' 'TestMock' 'Trees' 'Twilio' 'Vidi' 'VistaCursors' 'Viva' 'WiringPi' 'WorkingSet' 'XBase' 'sQuick' âsQuick_new' http://smalltalkhub.com/mc/Pharo/MetaRepoForPharo30/main --- 'Actalk' 'Arduino' 'BabyMock2' 'CTranslator' 'DBPedia' 'DigitalOcean' 'Forum' 'Fuel' 'GTDebugger' 'GTInspector' 'GTInspectorCore' 'GTPlayground' 'GTPlaygroundCore' 'GTSpotter' 'GToolkit' 'GlamourCore' 'GlorpDBX' 'GraphET' 'InstanceEncoder' 'Marina' 'Mechanize' 'Memcached' 'Moose' 'Pastell' 'PharoOnlineHelp' 'ProfStef' 'PythonParser' 'RFB' 'Roassal3d' 'SQLite3' 'Smallapack' 'SmalltalkHub' 'Snapshotcello' 'SortFunctions' 'Spotlight' 'Stamp' 'Tide' 'VersionBrowser' âVersionner' http://www.squeaksource.com/MetacelloRepository --- 'AXAnnouncements' 'Adore' 'Aida' 'Ajp' 'Algernon' 'Alien' 'Amers' 'Announcements' 'AutomaticMethodCategorizer' 'BetaNineIPAddress' 'CAnalyzer' 'CairoGraphics' 'CampSmalltalkLondon' 'Cecinestpasunepomme' 'CharacterMap' 'Chronos' 'CloudforkAWS' 'Cog' 'Connectors' 'ContextS' 'Control' 'Country' 'Countryside' 'DBXBrowser' 'DBXTools' 'DependencyBrowser' 'DependencyView' 'EnhancedOmniBrowser' 'ExternalIconFamily' 'ExternalWebBrowser' 'FileMan' 'FileTree' 'Filesystem' 'GemTools' 'Gitocello' 'Glamour' 'Gofer' 'GoferProjectLoader' 'GoogleAnalytics' 'HPDF' 'HealthReportProducer' 'HelpSystem' 'ICal' 'InstancesBrowser' 'JQueryWidgetBox' 'JavaScriptAnalyzer' 'Jejak' 'Keymapping' 'Kozen' 'KyotoTycoonClient' 'MaBase' 'MaClientServer' 'Magma' 'Magmafy' 'Magritte' 'Magritte2' 'Magritte3AddOns' 'MagritteAddOns2' 'Metacello' 'MetacelloBrowser' 'MetacelloPreview' 'MockGemStone' 'Mondrian' 'Money' 'MonticelloRedirect' 'Murmansk' 'Nagare' 'NativeBoost' 'Neo4reSt' 'NewECompletion' 'NewInspector' 'NewOCompletion' 'Nile' 'NotificationsArea' 'O2' 'OCompletion' 'OPAX' 'ObjectMetaTools' 'OmniBrowser' 'OmniBrowserLukas' 'Orca' 'PagedReader' 'Pharo' 'PharoMorphicExtras' 'PharoNonCore' 'Phriak' 'Pier' 'Pier2' 'PierAddOns' 'PierAddOns2' 'PostMark' 'ProcessModel' 'Quaternion' 'REPL' 'Raphael' 'RatPack' 'RefactoringBrowser' 'RefactoringTools' 'RoelTyper' 'SIXX' 'SPort2' 'SandcastleThemes' 'Scamper' 'Scribo' 'Seafox' 'Seaside' 'Seaside28' 'Seaside28Examples' 'Seaside30' 'SeasideJSON' 'SeasideRest' 'SeasideTesting' 'SharedWorkspace' 'Shout' 'SimpleApplescript' 'SoapOpera' 'SpellingServices' 'SpyForO2' 'Sqnappy' 'SqueakCheck' 'SqueakDBX' 'SqueakFS' 'SqueakSource' 'StOMP' 'Stripe' 'SunnysidePlanning2' 'SwaLint' 'Swazoo2' 'TODO' 'TimerDaemon' 'Tuio' 'VMMaker' 'Waterfall' 'WebClient' 'WebTester' 'XMLRPC' 'XMLSupport' 'Zodiac'

15 22

Pharo behind ALLSTOCKER marketplace
by Masashi UMEZAWA Aug. 17, 2017

Aug. 17, 2017

Hi all, >From Torsten, I've received a request to post about some technical details of ALLSTOCKER (http://pharo.org/success/AllStocker) . I hope these notes will be interesting to Pharo web developers. - Seaside / Teapot We are using Seaside as a main framework for ALLSTOCKER marketplace. Seaside's component architecture is great for extending application in an organized way. ALLSTOCKER prototype was originally composed of only 3 class categories. Now these were gradually grown to 70 categories. But we still feel that they are manageable. We also use Teapot for building Web-based API in a quick way. Recently we've built webhook handlers for integration with other services. - Templating with Mustaside We need a lot of responsive-design web pages for supporting various mobile devices. (It is important especially for Southeast Asian countries, where tablets are popular than PCs). We would like to adopt existing Twitter Bootstrap templates for saving time. So, Mustaside was our choice. http://smalltalkhub.com/#!/~MasashiUmezawa/Mustaside Before Mustaside, there were a lot of noisy #div: sends in our code. Now they are gone. - Localization Our business target is world-wide. So localization is very important topic. Currently ALLSTOCKER supports 4 languages and we will add Chinese languages soon. Translation strings are not only in Smalltalk code, but also in Mustache templates. So we selected Soup for extracting translatable strings in those templates. http://smalltalkhub.com/#!/~PharoExtras/Soup For managing translations, we use Gettext package. http://smalltalkhub.com/#!/~PharoExtras/Gettext - Databases For transactional data, we chose Glorp. Although there are mapping costs, we prefer RDB (Postgres). It is reliable for handling precious order-related data. However, for supporting complex search of machines, we use Neo4j - a graph database. It supports very powerful query language called Cypher. We can avoid complex table joins and get aggregated results faster. http://smalltalkhub.com/#!/~MasashiUmezawa/Neo4reSt - Keyword search ALLSTOCKER supports free keyword search. We selected Elasticsearch for search-engine. Elasticsearch has elaborated searching facilities and those are easily accessible via REST API. We have extended the existing Elasticsearch client for Pharo 5. https://github.com/newapplesho/elasticsearch-smalltalk - Deployment We are using AWS Elastic Load Balancer and running Nginx as a front-end web server. Two back-end Pharo images are running and load-balanced with sticky sessions. It was sort of difficult to find the appropriate simultaneous number of database connections and Pharo processes. We feel ALLSTOCKER is pretty stable for now, but we need to adjust more for expanding our services. Best regards, -- [:masashi | ^umezawa]

8 7

macOS Sierra support
by Sven Van Caekenberghe July 15, 2017

July 15, 2017

Hi, Can someone who really knows/understand please describe where to find the necessary Pharo VM's to run on the newly released macOS Sierra (10.12) ? In particular it seems old VM's just stop working and recent VM's that do work either have issues or cannot run older (3.0, 4.0) images. Thanks, Sven PS: I have not yet upgraded, but one of my colleagues did and he got stuck: even after we found a VM that worked, it could only run 5.0 images, not his production 4.0 images. Needless to say, this is not good. PS2: Another really annoying problem is the following: he saved all his (really important) scripts using Script Manager as a FUEL. Moving between 4.0 and 5.0 FUEL stops working (version incompatibility) - this is really not cool, why would a newer FUEL not be able to read older FUEL. He ended up copying string data by opening the binary FUEL file in a text editor.

12 27

Re: [Pharo-dev] [Pharo-users] Pharo 5 and retina displays in 2016?
by Tim Mackinnon April 20, 2017

April 20, 2017

Adding this to the Dev user group - is there really no solution for this? I read a few old messages from 2012 about different fonts but nothing seemed to work from what I could see. Has everyone just been putting up with the fuzziness and got used to it? As a new Retina display user, I love the clarity in other apps and find it quite jarring in Pharo. I was going to do a brown bag session on Smalltalk with the current team Iâm working with, however as they all have retina Macs, I think I may reconsider this as unless you love the language its another thing for people to throw stones at. As Stephan mentions below, were Tobiasâ changes not viable? Is there anything we can do to help get them safely in - or can I try it on an experimental branch? Tim > On 29 Nov 2016, at 21:02, Stephan Eggermont <stephan(a)stack.nl> wrote: > > On 29/11/16 00:34, Tim Mackinnon wrote: >> Or is this still the same issue thatâs been hanging around for a long >> time as its hard to easily fix? > > Tobias Pape wrote some vm changes that solved the problem this summer, and they somehow interfered, so were reverted. I posted some pictures > on twitter 10/11-7 of it working with both Pharo & Squeak. > > Stephan > > > >> Hi Guys - its been a while since Iâve had a chance to get back into some coding in Smalltalk, and took the plunge again with a new laptop and Pharo 5, however the screen is really blurry? >> >> Doing a google search, I can see this same question raised back in 2012, but has there been no progress in this intervening years or has a workaround not been documented for google to find? Or has everyone just got used to it, and I need to hand in there... >> >> I have tried using a different font - but not sure what constitutes a true-type font (are these the same as free-type mentioned in the Settings Browser?). Has anyone found a font that makes everything look crisp (I tried Helvetica but its only marginally better). >> >> Or is this still the same issue thatâs been hanging around for a long time as its hard to easily fix? >> >> Tim

8 20

Some test where Spur more slow than Cog
by Denis Kudriashov April 12, 2017

April 12, 2017

Hi. I found case where Spur more slow than Cog. Not much but. prototype := BorderedMorph new. result := [prototype veryDeepCopy ] benchFor: 2 seconds. In my computer I got: Cog: a BenchmarkResult(16,982 iterations in 2 seconds 1 millisecond. 8,487 per second) Spur: a BenchmarkResult(12,507 iterations in 2 seconds 33 milliseconds. 6,152 per second). Is it expected behavior for such case?

3 5