July 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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Re: [Pharo-dev] [Vm-dev] Image crashing on startup, apparently during GC
by Eliot Miranda June 3, 2019

June 3, 2019

Hi Damien, On Fri, Mar 23, 2018 at 12:38 PM, Damien Pollet <damien.pollet(a)gmail.com> wrote: > > Here are the files (image and various outputs). Running with --leakcheck > does mention a few object leaks (see output.txt); > Indeed the image is corrupt at start-up. See below. > I'm not sure where to get or how to build an assert VM. > When you build a phar. VM under build.macos64x64/pharo.cog.spur using the mvm script (mvm -A) you produce an assert VM in PharoAssert.app. > I also realized the VM I had was from this summer (the one that comes with > a 70 image with zeroconf). The output files I include were produced by the > VM at get.pharo.org/64/vmLatest70 > > https://www.dropbox.com/s/y8yqjuzd9nsvy1u/clap-broken.tar.gz?dl=0 > > On 20 March 2018 at 18:17, Eliot Miranda <eliot.miranda(a)gmail.com> wrote: > >> >> Hi Damien, >> >> On Tue, Mar 20, 2018 at 3:12 AM, Damien Pollet <damien.pollet(a)gmail.com> >> wrote: >> >>> >>> Hi, I have a Pharo image that crashes the VM on startup. The crash >>> report below seems to incriminate GC. Should I make it available somewhere >>> online? What's most convenient? >>> >> >> Don't care. Anywhere it can be downloaded from. Also, try running with >> -leakcheck 15, preferably in an assert VM and see if that gets you >> additional information. >> >> >>> >>> Process: Pharo [64892] >>> Path: /Users/USER/*/Pharo.app/Contents/MacOS/Pharo >>> Identifier: org.pharo.Pharo >>> Version: 5.0.201708271955 (5.0.201708271955) >>> >> Right. This VM is prior to the bug fixes in VMMaker.oscog-eem.2320: Spur: Fix a bad bug in SpurPlnningCompactor. unmarkObjectsFromFirstFreeObject, used when the compactor requires more than one pass due to insufficient savedFirstFieldsSpace, expects the corpse of a moved object to be unmarked, but copyAndUnmarkObject:to:bytes:firstField: only unmarked the target. Unmarking the corpse before the copy unmarks both. This fixes a crash with ReleaseBuilder class>>saveAsNewRelease when non-use of cacheDuring: creates lots of files, enough to push the system into the multi-pass regime. Pharo urgently needs to upgrade the VM to one more up to date than 2017 08 27 (in fact more up-to-date than opensmalltalk/vm commit 0fe1e1ea108e53501a0e728736048062c83a66ce, Fri Jan 19 13:17:57 2018 -0800). The bug that VMMaker.oscog-eem.2320 fixes can result in image corruption in large images, and can occur (as it has here) at start-up, causing one's work to be irretrievably lost. > Code Type: X86-64 (Native) >>> Parent Process: ??? [64888] >>> Responsible: Pharo [64892] >>> User ID: 501 >>> >>> Date/Time: 2018-03-19 20:27:03.906 +0100 >>> OS Version: Mac OS X 10.13.3 (17D102) >>> Report Version: 12 >>> Anonymous UUID: 6D022236-78DD-6676-117F-EADA56D5D1BE >>> >>> Sleep/Wake UUID: AC9E4E55-3CDB-4B4F-A6B4-51ACB1177154 >>> >>> Time Awake Since Boot: 28000 seconds >>> Time Since Wake: 6500 seconds >>> >>> System Integrity Protection: enabled >>> >>> Crashed Thread: 0 Dispatch queue: com.apple.main-thread >>> >>> Exception Type: EXC_BAD_ACCESS (SIGABRT) >>> Exception Codes: KERN_INVALID_ADDRESS at 0x000000012b67c0b0 >>> Exception Note: EXC_CORPSE_NOTIFY >>> >>> VM Regions Near 0x12b67c0b0: >>> VM_ALLOCATE 000000011adfc000-00000001259fc000 [172.0M] >>> rw-/rwx SM=PRV >>> --> >>> STACK GUARD 0000700005613000-0000700005614000 [ 4K] >>> ---/rwx SM=NUL stack guard for thread 1 >>> >>> Application Specific Information: >>> abort() called >>> >>> Thread 0 Crashed:: Dispatch queue: com.apple.main-thread >>> 0 libsystem_kernel.dylib 0x00007fff53fbde3e __pthread_kill + 10 >>> 1 libsystem_pthread.dylib 0x00007fff540fc150 pthread_kill + 333 >>> 2 libsystem_c.dylib 0x00007fff53f1a312 abort + 127 >>> 3 org.pharo.Pharo 0x0000000104ed8997 sigsegv + 190 >>> 4 libsystem_platform.dylib 0x00007fff540eff5a _sigtramp + 26 >>> 5 ??? 000000000000000000 0 + 0 >>> 6 org.pharo.Pharo 0x0000000104e73558 markObjects + 464 >>> 7 org.pharo.Pharo 0x0000000104e72d40 fullGC + 72 >>> 8 org.pharo.Pharo 0x0000000104e92dea primitiveFullGC + >>> 45 >>> 9 org.pharo.Pharo 0x0000000104e52425 interpret + 26715 >>> 10 org.pharo.Pharo 0x0000000104e5c7f6 >>> enterSmalltalkExecutiveImplementation + 152 >>> 11 org.pharo.Pharo 0x0000000104e4be6c interpret + 674 >>> 12 org.pharo.Pharo 0x0000000104ed9cc1 >>> -[sqSqueakMainApplication runSqueak] + 394 >>> 13 com.apple.Foundation 0x00007fff2e6d696c >>> __NSFirePerformWithOrder + 360 >>> 14 com.apple.CoreFoundation 0x00007fff2c579127 >>> __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 23 >>> 15 com.apple.CoreFoundation 0x00007fff2c57904f >>> __CFRunLoopDoObservers + 527 >>> 16 com.apple.CoreFoundation 0x00007fff2c55b6a8 __CFRunLoopRun + >>> 1240 >>> 17 com.apple.CoreFoundation 0x00007fff2c55af43 >>> CFRunLoopRunSpecific + 483 >>> 18 com.apple.HIToolbox 0x00007fff2b872e26 >>> RunCurrentEventLoopInMode + 286 >>> 19 com.apple.HIToolbox 0x00007fff2b872a9f >>> ReceiveNextEventCommon + 366 >>> 20 com.apple.HIToolbox 0x00007fff2b872914 >>> _BlockUntilNextEventMatchingListInModeWithFilter + 64 >>> 21 com.apple.AppKit 0x00007fff29b3df5f _DPSNextEvent + >>> 2085 >>> 22 com.apple.AppKit 0x00007fff2a2d3b4c >>> -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] >>> + 3044 >>> 23 com.apple.AppKit 0x00007fff29b32d6d -[NSApplication >>> run] + 764 >>> 24 com.apple.AppKit 0x00007fff29b01f1a NSApplicationMain >>> + 804 >>> >>> -- >>> Damien Pollet >>> type less, do more [ | ] http://people.untyped.org/damien.pollet >>> >>> >> >> >> -- >> _,,,^..^,,,_ >> best, Eliot >> >> > > > -- > Damien Pollet > type less, do more [ | ] http://people.untyped.org/damien.pollet > > -- _,,,^..^,,,_ best, Eliot

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Recent Pharo 6.1 OSX shows lots of "Error: unsupported compressor 8 on command line"
by Tim Mackinnon April 19, 2019

April 19, 2019

I noticed that recent Pharo 6.1 zero conf downloads show lots of these errors when you run the image in the terminal. Previous versions didnât do this - is this something to do with the latest vm upgrade? ./pharo-ui PagerDuty.image /BuildRoot/Library/Caches/com.apple.xbs/Sources/AppleFSCompression/AppleFSCompression-96.30.2/Common/ChunkCompression.cpp:50: Error: unsupported compressor 8 /BuildRoot/Library/Caches/com.apple.xbs/Sources/AppleFSCompression/AppleFSCompression-96.30.2/Libraries/CompressData/CompressData.c:353: Error: Unknown compression scheme encountered for file '/System/Library/CoreServices/CoreTypes.bundle/Contents/Resources/Exceptions.plist' /BuildRoot/Library/Caches/com.apple.xbs/Sources/AppleFSCompression/AppleFSCompression-96.30.2/Common/ChunkCompression.cpp:50: Error: unsupported compressor 8 /BuildRoot/Library/Caches/com.apple.xbs/Sources/AppleFSCompression/AppleFSCompression-96.30.2/Libraries/CompressData/CompressData.c:353: Error: Unknown compression scheme encountered for file '/System/Library/CoreServices/CoreTypes.bundle/Contents/Library/AppExceptions.bundle/Exceptions.plist' Tim

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IndexedSlots in combination with StatefulTraits
by Torsten Bergmann Aug. 31, 2018

Aug. 31, 2018

I guess I found a bug in accessing Slots using #slots in combination with IndexedSlots and traits. To reproduce use latest Pharo 7 (Build 1126) First create a class with a slot, note that the slot needs to be : Object subclass: #ClassA slots: { IndexedSlot named: #upper } classVariables: { } package: 'Slot-Bugs' As it is the first slot it internally receives an index 1 as you can check with "ClassA slots first". Now define a stateful trait with another indexed slot: Trait named: #StatefulTrait uses: {} slots: { IndexedSlot named: #slotFromTrait } category: 'Slot-Bugs' And create a new subclass using the new Trait ClassA subclass: #ClassB uses: StatefulTrait instanceVariableNames: '' classVariableNames: '' package: 'Slot-Bugs' 1. when you evaluate "ClassA slots" it returns {#FirstSlot => Slot} which is correct 2. when you evaluate "StatefulTrait slots" it returns {#slotFromTrait => Slot} which is correct 3. when you evaluate "ClassB allSlots" returns "an OrderedCollection(#upper => InstanceVariableSlot #slotFromTrait => InstanceVariableSlot)" which is OK but 4. when you evaluate "ClassB slots" it returns {#slotFromTrait => InstanceVariableSlot} which is NOT correct as class B does not define the slot, it is defined in the trait So I think 4. is wrong and reasons is the implementation of #slot: slots "I remove the slots comming from a traitComposition" ^ super slots reject:[ :e | self traitComposition slots includes:e ] If you debug you will notice that super slots returns our #slotFromTrait with an index of 2 while self traitComposition slots returns our #slotFromTrait with an index of 1 while which is the same #slotFromTrait but a different index - therefore it does not get removed. Dont know what is the best way to fix this without any side effects. Commenst and help appreciated. Thanks T.

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About the infinite debugger
by Guillermo Polito Aug. 8, 2018

Aug. 8, 2018

Hi all, during today's sprint we have been working with lots of people on the infinite debugger problem (https://pharo.fogbugz.com/f/cases/22085/) We have checked the emails sent in the latest month. Then, together with Quentin, Pablo, Pavel, Yoan we have been discussing and testing hypothesis all day. We have been also comparing the debuggers code between pharo 3/4 (where the bug was is present) and pharo 7, but this was not necessarily straight forward as the code is not the same and there is no easy diff... AAAAND, we have found that the problem may come from a wrong pragma marker. Just removing that pragma gives us back the same behaviour as in Pharo 3/4. :D https://github.com/pharo-project/pharo/pull/1621 I know that the exception handling/debugging has been modified several times in the latest years (some refactorings, hiding contexts...), we unfortunately don't have tests for it, so I'd like some more pair of eyes on it. Ben, Martin could you take a look? Thanks all for the fish, Guille

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Charting in Roassal2
by Shaping July 31, 2018

July 31, 2018

Hi Folks. Can anyone tell me whether we have candlestick-charting ability in Roassal2? Shaping

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[Pharo 7.0-dev] Build #1147: 22218 Cleanup System-OSEnvironments and deprecate OSEnvironment(class)>>default
by ci-pharo-ci-jenkins2＠inria.fr July 31, 2018

July 31, 2018

There is a new Pharo build available! The status of the build #1147 was: SUCCESS. The Pull Request #1605 was integrated: "22218 Cleanup System-OSEnvironments and deprecate OSEnvironment(class)>>default" Pull request url: https://github.com/pharo-project/pharo/pull/1605 Issue Url: https://pharo.fogbugz.com/f/cases/22218 Build Url: https://ci.inria.fr/pharo-ci-jenkins2/job/Test%20pending%20pull%20request%2…

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[Pharo 7.0-dev] Build #1146: 21755-We-should-renamed-Matrix-into-its-old-name-Array2D
by ci-pharo-ci-jenkins2＠inria.fr July 31, 2018

July 31, 2018

There is a new Pharo build available! The status of the build #1146 was: SUCCESS. The Pull Request #1650 was integrated: "21755-We-should-renamed-Matrix-into-its-old-name-Array2D" Pull request url: https://github.com/pharo-project/pharo/pull/1650 Issue Url: https://pharo.fogbugz.com/f/cases/21755 Build Url: https://ci.inria.fr/pharo-ci-jenkins2/job/Test%20pending%20pull%20request%2…

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[Pharo 7.0-dev] Build #1145: 22061-assert-should-be-rewritten-in-terms-of-assertdescription
by ci-pharo-ci-jenkins2＠inria.fr July 30, 2018

July 30, 2018

There is a new Pharo build available! The status of the build #1145 was: SUCCESS. The Pull Request #1661 was integrated: "22061-assert-should-be-rewritten-in-terms-of-assertdescription" Pull request url: https://github.com/pharo-project/pharo/pull/1661 Issue Url: https://pharo.fogbugz.com/f/cases/22061 Build Url: https://ci.inria.fr/pharo-ci-jenkins2/job/Test%20pending%20pull%20request%2…

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