- Pharo-users - lists.pharo.org

Glamour accordion presentation
by Peter UhnÃ¡k July 3, 2017

July 3, 2017

Hi, I'm playing around with Glamour and accordion presentation, however there are couple things I'm struggling with. I have a simple presentation: ``` | browser data| data := { 'First' -> #(1 2 3). 'Second' -> #(a b c). 'Third' -> #(A B C). 'Fourth' -> #(! @ #'#'). }. browser := GLMTabulator new. browser column: #accordion. browser transmit to: #accordion; andShow: [ :a | a accordionArrangement. a title: 'Accordion'. data do: [ :pair | a fastList title: pair key; display: pair value ]. a list. ]. browser openOn: #(). ``` * Is it possible to tell the accordion to not take more space than is needed? E.g. after item 3, and after item $c there's lot of empty space. * Is it possible to close accordions upwards? I have added an empty list at the end to consume extra white space, but it is insufficient (see point above) and ugly. * Is it possible to control which accordions are opened/closed by default? * Is it possible to connect all the lists so only one item can be selected at any time? Currently I can select independently in the lists. * Is it possible to build the lists from the input data (=openOn: XXX)? I can fill the data, but if I am making multiple lists then I am lost. (I could use tree to fix most of the problems, but Accordion looks much nicer :)) Any pointers appreciated, Peter

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Pharo6.0 for linux and PharoV60.sources location
by Andreas Sunardi July 3, 2017

July 3, 2017

Pardon me if this has been discussed before. I seem to recall somebody ran into this issue or related to this, but I don't remember what the solution was, if there was any. The linux Pharo 6 download package from Pharo web site has different VM directory structure than Pharo 5. The PharoV60.sources file is not located in the same directory as the VM binary. As a result, if user has image + changes files in another directory, Pharo always gives notification that the sources file is not found. This is not so with the Pharo 5. In most cases, it's just a notification, but in the past I've run into an error in debugging session when I tried to look into a method because of missing sources file. Can this be corrected or is it expected for the user to manage sources file where about? I'm hoping a correction or clarification would at least benefit new comers. -- Andreas

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Custom Glamour browser for Dr. Geo scripting
by Hilaire July 2, 2017

July 2, 2017

Hi, I try to build a dedicated browser for user scripting on DrGeo. I am learning from the Deep into Pharo Glamour chapter, extending the given example. Regarding the method category pane, I need both instance and class side, so I write it like this: categoriesIn: constructor constructor list title: 'Methods'; display: [ :scriptClass | scriptClass organization categories]. constructor list title: 'Script data'; display: [ :scriptClass | scriptClass class organization categories] The browser is defined as: buildBrowser browser := GLMTabulator new. browser column: #scripts; column: #categories; column: #methods. browser transmit to: #scripts; andShow: [ :a | self scriptsIn: a ]. browser transmit from: #scripts; to: #categories; andShow: [ :a | self categoriesIn: a ]. browser transmit from: #scripts; from: #categories; to: #methods; andShow: [:a | self methodsIn: a ]. browser transmit from: #scripts; from: #categories; to: #methods; andShow: [:a | self classMethodsIn: a ]. browser transmit from: #scripts; toOutsidePort: #selectedScript. browser transmit from: #methods; toOutsidePort: #selectedMethod. ^ browser but something is missing to get the listed method right depending on the category is instance or class side. I don't how to do it. Any tips? Thanks Hilaire -- Dr. Geo http://drgeo.eu

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PrimitiveFailed: primitive #createDirectory: in UnixStore failed
by Jacob Wagner July 2, 2017

July 2, 2017

Hi. I am trying to run pharo 6 in an Ubuntu 16 vm running XFCE desktop environment. I downloaded the 64 bit pharo zip and executed ./pharo The pharo GUI starts but immediately a debugger opens with the title's error message. After this, I cannot exit the VM normally by clicking the "x" in the upper right hand corner, i have to close the terminal because a similar error will popup if I try to close the window. How should I proceed? Not sure if I need to change permissions on files or whatever. ----- <zenchess(a)gmail.com> -- View this message in context: http://forum.world.st/PrimitiveFailed-primitive-createDirectory-in-UnixStor… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Re: [Pharo-users] PharoJS Killer app
by Joe Shirk July 1, 2017

July 1, 2017

I think PharoJS can, and should do this much better: https://blockstack.org On Wed, Jun 28, 2017 at 11:21 PM, askoh <askoh(a)askoh.com> wrote: > Norbert: > > Great answer. Spoken like a wise man. > > I want a web app to fill paper forms - like income tax forms say. The forms > are scanned or input into the app. The developer provides the logic > connecting the input and output fields of the forms. The users then use the > app to fill their own forms, print them or send them electronically. Can > Smalltalk provide a superior solution? How? > > Thanks, > Aik-Siong > > > > -- > View this message in context: http://forum.world.st/Re- > PharoJS-tp4952267p4952833.html > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. > > -- Gmail is unsecure. See: EFF Surveillance Self-Defense Project <https://ssd.eff.org/tech/email> If you wish to discuss private or sensitive concerns, I suggest using my preferred secure email address: godparticle(a)protonmail.ch or, if you prefer to send to this gmail account, consider using https://www.mailpile.is and using encryption with my Public Key: https://pgp.mit.edu/pks/lookup?op=vindex&search=0x8726E59217F0E6F9

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Re: [Pharo-users] Validate password with PBKDF2
by Erik Stel July 1, 2017

July 1, 2017

Hi Francis, You write: Pharo Smalltalk Users mailing list wrote > FIY > > UUID new asByteArray > > does not give a ByteArray because UUID is a subclass of ByteArray and > asByteArray returns self (Entering teacher mode) This actually means that "UUID new asByteArray" does answer a ByteArray. It will answer (as you mentioned correctly) itself. Since a UUID is a ByteArray it means it will answer a ByteArray (in contrary to your statement). To put it differently: The inheritance relation (UUID being a subclass of ByteArray) is a "IS-A" relation. So any UUID is a ByteArray. This means however the message "asByteArray" did not have to be send of course (it is already a ByteArray). I was not sure the class UUID was actually a subclass of ByteArray when writing my reply. Turns out it is. Cheers, Erik -- View this message in context: http://forum.world.st/Validate-password-with-PBKDF2-tp4952973p4953168.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Pharo6 bootstrap how to
by Hilaire July 1, 2017

July 1, 2017

Hi, I want to build a Pharo6 image from scratch for Dr. Geo. How to do it? Thanks Hilaire -- Dr. Geo http://drgeo.eu

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FUEL documentation
by Juraj Kubelka July 1, 2017

July 1, 2017

(sorry, I have accidentally pressed send button) Hi, Is there any documentation about FUEL? I would like to understand in more detail what data are serialized, if I can somehow alter it (filter it) explicitly, and how can I handle errors on materialization. I was playing a bit with it and in some case, during the materialization, it complained that there is a missing class, but I was pretty sure that the class has nothing to do with the serialized objects. So, I will appreciate any documentation that helps to understand how I can analyze what is serialized and how to handle materialization errors. Thanks! Juraj

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Re: [Pharo-users] Are we able to run pharo images in a read only environment?
by Tim Mackinnon June 30, 2017

June 30, 2017

Wow that's very promising - how do I get that setup? I also believe for lambda I need 64 bit as you have little control of the base image? I haven't had a chance to try marshalling results back to Alexa yet - but that's my goal. Tim Sent from my iPhone > On 30 Jun 2017, at 15:43, Sven Van Caekenberghe <sven(a)stfx.eu> wrote:> > >> On 27 Jun 2017, at 21:15, Sven Van Caekenberghe <sven(a)stfx.eu> wrote:>> >> >>> On 27 Jun 2017, at 21:00, Esteban A. Maringolo >>> <emaringolo(a)gmail.com> wrote:>>> >>> Interesting experiment. >>> >>> It would be good to know how fast does the image boot and start >>> execution in the context of a service billed at the sub second >>> scale.>> >> Sadly I have the impression we lost some speed: >> >> ~/pharo64$ ./pharo Pharo.image printVersion >> [version] 6.0 #60499 >> >> ~/pharo64$ time ./pharo Pharo.image eval '42 factorial' >> 1405006117752879898543142606244511569936384000000000 >> >> real 0m1.276s >> user 0m0.985s >> sys 0m0.171s >> >> while before >> >> ~/pharo/build$ ../bin/pharo Pharo.image printVersion >> [version] 4.0 #40620 >> >> $ time ../bin/pharo Pharo.image eval '42 factorial' >> 1405006117752879898543142606244511569936384000000000 >> >> real 0m0.526s >> user 0m0.434s >> sys 0m0.045s >> >> But it is really hard to find the cause. > > The good news is that the Pharo 7 minimal core is way faster > > $ time ./pharo ~/Downloads/Pharo7.0-core-32bit-b649ac6.image eval "42 > factorial"> 1405006117752879898543142606244511569936384000000000 > > real 0m0.262s > user 0m0.132s > sys 0m0.062s > > Which is good of course ! > >> That being said, these lambda servers can only work well if they keep >> instances alive for longer when there is enough traffic.>> >>> Esteban A. Maringolo >>> >>> >>> 2017-06-27 13:05 GMT-03:00 Tim Mackinnon <tim(a)testit.works>: >>>> Hi - I am trying to run a pharo image in lambda (as an experiment) >>>> - however>>>> I get an error from Pharo about not being able to write to the >>>> changes file?>>>> >>>> As I am just evaluating some code - Iâm not really coding, so donât >>>> need a>>>> changes file - is there a command line option to not require it? >>>> >>>> Also, am I running pharo the most efficient way - Iâm using eval >>>> on the>>>> command line and referencing a class with a class method - but is >>>> this the>>>> best way? >>>> >>>> Thanks, >>>> >>>> Tim >>>> >>>> "errorMessage": "Command failed: ./pharo Pharo.image eval \"Lambda>>>> processJSON: >>>> '{\"key3\":\"value3\",\"key2\":\"value2\",\"key1\":\"value1\"}'\"\- >>>> n'Pharo>>>> cannot write to the changes file named >>>> /var/task/Pharo.changes.\n\nPlease>>>> check that you have write permission for this file.\n\nYou won''t >>>> be able to>>>> save this image correctly until you fix this.'\n\u001b[31mError: >>>> Can't find>>>> the requested >>>> origin\n\u001b[0mUnixResolver(PlatformResolver)>>cantFindOriginErr- >>>> or\n[ self>>>> cantFindOriginError ] in >>>> UnixResolver(PlatformResolver)>>directoryFromEnvVariableNamed: in >>>> Block: [>>>> self cantFindOriginError >>>> ]\nUnixResolver(PlatformResolver)>>directoryFromEnvVariableNamed:o- >>>> r:\nUnixResolver(PlatformResolver)>>directoryFromEnvVariableNamed:- >>>> \nUnixResolver>>home\n[>>>> self home / '.config' ] in UnixResolver>>preferences in Block: [ >>>> self home />>>> '.config' >>>> ]\nUnixResolver(PlatformResolver)>>directoryFromEnvVariableNamed:o- >>>> r:\nUnixResolver>>preferences\nUnixResolver(FileSystemResolver)>>r- >>>> esolve:\nSystemResolver(FileSystemResolver)>>unknownOrigin:\nSyste- >>>> mResolver(FileSystemResolver)>>resolve:\nInteractiveResolver>>unkn- >>>> ownOrigin:\n[>>>> self unknownOrigin: origin ] in InteractiveResolver>>resolve: in >>>> Block: [>>>> self unknownOrigin: origin >>>> ]\nIdentityDictionary(Dictionary)>>at:ifAbsent:\nInteractiveResolv- >>>> er>>resolve:\nFileLocator>>resolve\nFileLocator(AbstractFileRefere- >>>> nce)>>exists\nGlobalIdentifierStonPersistence(GlobalIdentifierPers- >>>> istence)>>shouldCallPreviousPersistence\nGlobalIdentifierStonPersi- >>>> stence(GlobalIdentifierPersistence)>>ensure:\nGlobalIdentifier>>en- >>>> sure\nGlobalIdentifier>>>> class>>initializeUniqueInstance\nGlobalIdentifier >>>> class>>uniqueInstance\nSystemSettingsPersistence >>>> class>>resumeSystemSettings\n[ :persistence | persistence >>>> resumeSystemSettings ] in PharoCommandLineHandler>>runPreferences >>>> in Block:>>>> [ :persistence | persistence resumeSystemSettings >>>> ...etc...\nBlockClosure>>cull:\nSystemDictionary(Dictionary)>>at:i- >>>> fPresent:\nSmalltalkImage>>at:ifPresent:\nPharoCommandLineHandler>- >>>> >runPreferences\nPharoCommandLineHandler>>activate\nPharoCommandLi- >>>> neHandler>>>> class(CommandLineHandler class)>>activateWith:\n\u001b[0m", >>>> "errorType": "Error", >>>> "stackTrace": [ >>>> "'Pharo cannot write to the changes file named >>>> /var/task/Pharo.changes.", >>>> "", >>>> "Please check that you have write permission for this file.", >>>> "", >>>> "You won''t be able to save this image correctly until you fix >>>> this.'",>>>> "\u001b[31mError: Can't find the requested origin", >>>> "\u001b[0mUnixResolver(PlatformResolver)>>cantFindOriginError", >>>> "[ self cantFindOriginError ] in >>>> UnixResolver(PlatformResolver)>>directoryFromEnvVariableNamed: in >>>> Block: [>>>> self cantFindOriginError ]", >>>> "UnixResolver(PlatformResolver)>>directoryFromEnvVariableNamed:o- >>>> r:",>>>> "UnixResolver(PlatformResolver)>>directoryFromEnvVariableNamed:",>>>> "UnixResolver>>home", >>>> "[ self home / '.config' ] in UnixResolver>>preferences in Block: >>>> [ self>>>> home / '.config' ]", >>>> "UnixResolver(PlatformResolver)>>directoryFromEnvVariableNamed:o- >>>> r:",>>>> "UnixResolver>>preferences", >>>> "UnixResolver(FileSystemResolver)>>resolve:", >>>> "SystemResolver(FileSystemResolver)>>unknownOrigin:", >>>> "SystemResolver(FileSystemResolver)>>resolve:", >>>> "InteractiveResolver>>unknownOrigin:", >>>> "[ self unknownOrigin: origin ] in >>>> InteractiveResolver>>resolve: in>>>> Block: [ self unknownOrigin: origin ]", >>>> "IdentityDictionary(Dictionary)>>at:ifAbsent:", >>>> "InteractiveResolver>>resolve:", >>>> "FileLocator>>resolve", >>>> "FileLocator(AbstractFileReference)>>exists", >>>> >>>> "GlobalIdentifierStonPersistence(GlobalIdentifierPersistence)>>sho- >>>> uldCallPreviousPersistence",>>>> "GlobalIdentifierStonPersistence(GlobalIdentifierPersistence)>>en- >>>> sure:",>>>> "GlobalIdentifier>>ensure", >>>> "GlobalIdentifier class>>initializeUniqueInstance", >>>> "GlobalIdentifier class>>uniqueInstance", >>>> "SystemSettingsPersistence class>>resumeSystemSettings", >>>> "[ :persistence | persistence resumeSystemSettings ] in >>>> PharoCommandLineHandler>>runPreferences in Block: [ :persistence |>>>> persistence resumeSystemSettings ...etc...", >>>> "BlockClosure>>cull:", >>>> "SystemDictionary(Dictionary)>>at:ifPresent:", >>>> "SmalltalkImage>>at:ifPresent:", >>>> "PharoCommandLineHandler>>runPreferences", >>>> "PharoCommandLineHandler>>activate", >>>> "PharoCommandLineHandler class(CommandLineHandler >>>> class)>>activateWith:", >>>> "\u001b[0m", >>>> "ChildProcess.exithandler (child_process.js:204:12)", >>>> "emitTwo (events.js:106:13)", >>>> "ChildProcess.emit (events.js:191:7)", >>>> "maybeClose (internal/child_process.js:886:16)", >>>> "Process.ChildProcess._handle.onexit >>>> (internal/child_process.js:226:5)">>>> ] >>>> } >>>> >>>> >>> >> > >

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Re: [Pharo-users] Validate password with PBKDF2
by Erik Stel June 30, 2017

June 30, 2017

Francis, You're using an empty salt when creating the hash. Just prepending a random number does not add much security. Anyone knowing your solution will just prepend a random number. And creating only a few accounts in your system will probably reveal that information as well. A wrong-doer will just use a fake salt and will still be able to try a rainbow table attack. Please use a real random value for the salt. And easiest would be to give it a fixed size. (Don't have an image and/or code available, so this might lead to some pseudo code ;-) To generate a safe password hash which you can store in your db, the following method. It creates a random number (your example of a UUID of 16 bytes) and uses that as a salt for the password hash. Both values are then concatenated and returned as a 'safe' password. This can be stored in your db. To validate a user's password you retrieve the safePasswordHash from your db (based on the user's id) and validate the given password against it. For this the salt is retrieved from the safePasswordHash (first 16 bytes because UUID is 16 bytes) and it is then used to calculate the hash of the given password. It should match the second part of the safePasswordHash. Hope this helps. For real safety, please add some checks for valid values. Did we receive a valid password? Is the safePasswordHash the correct length (in this case 32 bytes)? You might consider using another salt generator than UUID. Cheers, Erik -- View this message in context: http://forum.world.st/Validate-password-with-PBKDF2-tp4952973p4953129.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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