[SOLVED] Object owner permissions

this post i just wrote is somewhat similar.. you also want permissions of the images to be different than permissions of the album where the images are added. you can write a custom module to do this.

if you'd like to write a custom module to do this we can help... are you proficient with PHP? if so i'll post some instructions for you to get started.
(and yes, that was the extent of the similarity...)

ok, start by taking a look at the following code:
modules/useralbum/classes/UserAlbumHelper.class, function createUserAlbum(). this function does some permissions stuff, so it's a good example.

here's what you'll do to build your module:
1) make a new directory under modules/ dir for your module
2) copy modules/sizelimit/module.inc into your dir (i pick this one as a starting point because it has the same module functions you'll need...)
3) edit your module.inc, set the classname, module id/name/etc
4) remove functions performFactoryRegistrations and isRecommendedDuringInstall.. you don't need those
5) change the classname in registerEventListeners to your class
6) now rewrite the handleEvent method to do what you want!

in handleEvent you'll want to detect that a GalleryDataItem has been added (not a new album, new user, or anything else..) so just modify the check you'll see that sizelimit uses to detect a new album. then you'll want to add user permissions to the item.. follow the examples from UserAlbumHelper.class (see docs for those methods in modules/core/classes/GalleryCoreApi.class). call getOwnerId() on the item from the $event for the id of the user. look in your g2_PermissionSetMap for the permissions you can add.. probably you want 'core.delete'

rastafari, I suspect you have alpha 4, which is quite outdated, and indeed doesn't include sizelimit (nor, if I am not mistaken, useralbum). Obviously, you can start with any other module, but (a) as mindless wrote it has the same functions that you will prbably need, and (b) even more important, there were significant changes in the framework that will impact your code.

So, you are better off using either nightly builds or CVS

OK guys, new problem. When i try to install the latest CVS build (fresh install) i get this error when i try to access install/index.php:

Fatal error: Using $this when not in object context in /var/www/htdocs/test/gallery2/modules/core/classes/GalleryUrlGenerator.class on line 93

Though, everything works fine when i use an older build such as gallery2-2005-01-05.tar.gz .

Any suggestions?

well, I've tried it several times, and removed everything and tried it again. Still gives me the same error. maybe something could be wrong with my PHP configuration? But the older version of gallery works, so...hmm

Oh, let's hope that this caused my error. I tried updating now but it didn't work, so I'll try later this evening, maybe I was a little bit too keen ;)
If you want to look at my php info, here it is:

EDIT: removed links

supercn,

'later' usually means in 6-8 hours (depending on SF schedule) or, for sure with tomorrow's (2005-02-09) nightly build

Got the new build to work through CVS, so far everything is fine. But I have some problems following your instructions mindless, on building my own module. I manage to copy the sizelimit module and modify classes and stuff but since I'm not very familiar to PHP I don't know what permission lines I need to add and which I don't, and where etc. I need further help on this. I end up with this error message, when i have installed and activated the module and try to upload a file:

Now, probably it just has to do with my bad knowledge of PHP. So mindless, is it way to much to ask you to construct the module for me? Otherwise I could post a link to my module and maybe from that you can tell what's wrong.
Thanks in advance, /Rasta

Here:
EDIT: removed link

ok..starting to get some hold of this now.. atm my module works and sets the permissions it's supposed to.. now could you please check my code again to see if there's something dramatically wrong? same link. Thanks again

EDIT: EDIT: Removed previous edit.. my bad

Like this? or do i have to completely remove the if clause (if$ret->isError())
Starting to feel really proud of almost having built my own module :D

cool! man, a big thanks for your guidance! I'll just post the module here in case anyone wants to use it or have a look at it:

class JensPermsModule extends GalleryModule {

    function JensPermsModule() {
        global $gallery;
    
        $this->setId('jensperms');      /* this must match the directory name */
        $this->setName('Jens Permissions');   /* this is the module name            */
        $this->setDescription($gallery->i18n('Automatically set permissions for uploaded file'));
        $this->setVersion('0.8.7');
        $this->setGroup('gallery', $gallery->i18n('Gallery'));
        $this->setCallbacks('registerEventListeners');
        $this->setRequiredCoreApi(array(3, 0));
        $this->setRequiredModuleApi(array(0, 9));
    }

    /**
     * @see GalleryModule::registerEventListeners()
     */
    function registerEventListeners() {
        GalleryCoreApi::registerEventListener('GalleryEntity::save', 
            new JensPermsModule(), true);   /* true=disableForUnitTest */
    }


    /**
     * @see GalleryModule::autoConfigure
     */
    function autoConfigure() {
        /* We don't require any special configuration */
        return array(GalleryStatus::success(), true);
    }

    
    /**
     * Event handler for GalleryEntity::save event
     * Copy dimension / filesize limits when the album is created 
     *
     * @param object GalleryEvent the event
     * @return object GalleryStatus a status code
     */
    function handleEvent($event) {
        if ($event->getEventName() == 'GalleryEntity::save') {
            $file = $event->getEntity();
            if (GalleryUtilities::isA($file, 'GalleryDataItem') &&
                    $file->testPersistentFlag(STORAGE_FLAG_NEWLY_CREATED)) {
        	$fileId = $file->getId();

                /* Set permissions.. */
		global $gallery;
                $user = $gallery->getActiveUser();
		$ret = GalleryCoreApi::addUserPermission($fileId, $user->getId(), 'core.delete');
                if ($ret->isError()) {
                    return array($ret->wrap(__FILE__, __LINE__), null);
                }
	
            }
	    return array(GalleryStatus::success(), null);
        }
    }
}

I'm only lucky you helped me out! Wouldn't have managed to do it else.

Interesting, thanks for noticing!

Now a (final?) question: If I want to add another automatic permission (same delete-own-thing but for comments) , do I need to create a completely new module or is it just to put in a new if (GalleryUtilities::isA(...)) in the main if-clause in the same module?

I have created the modules.inc in /modules/jensperms

I have then pasted the copde and saved. When i press modules in my gallery site admin frame The apge has this error on top:

class JensPermsModule extends GalleryModule { function JensPermsModule() { global $gallery; $this->setId('jensperms'); /* this must match the directory name */ $this->setName('Jens Permissions'); /* this is the module name */ $this->setDescription($gallery->i18n('Automatically set permissions for uploaded file')); $this->setVersion('0.8.7'); $this->setGroup('gallery', $gallery->i18n('Gallery')); $this->setCallbacks('registerEventListeners'); $this->setRequiredCoreApi(array(3, 0)); $this->setRequiredModuleApi(array(0, 9)); } /** * @see GalleryModule::registerEventListeners() */ function registerEventListeners() { GalleryCoreApi::registerEventListener('GalleryEntity::save', new JensPermsModule(), true); /* true=disableForUnitTest */ } /** * @see GalleryModule::autoConfigure */ function autoConfigure() { /* We don't require any special configuration */ return array(GalleryStatus::success(), true); } /** * Event handler for GalleryEntity::save event * Copy dimension / filesize limits when the album is created * * @param object GalleryEvent the event * @return object GalleryStatus a status code */ function handleEvent($event) { if ($event->getEventName() == 'GalleryEntity::save') { $file = $event->getEntity(); if (GalleryUtilities::isA($file, 'GalleryDataItem') && $file->testPersistentFlag(STORAGE_FLAG_NEWLY_CREATED)) { $fileId = $file->getId(); /* Set permissions.. */ global $gallery; $user = $gallery->getActiveUser(); $ret = GalleryCoreApi::addUserPermission($fileId, $user->getId(), 'core.delete'); if ($ret->isError()) { return array($ret->wrap(__FILE__, __LINE__), null); } } return array(GalleryStatus::success(), null); } } }

Then the design begins and the follow text is written:

Error: Error (ERROR_BAD_PLUGIN) : Class jenspermsModule does not exist

* in modules/core/classes/helpers/GalleryPluginHelper_simple.class at line 101 (gallerystatus::error)
* in modules/core/classes/GalleryCoreApi.class at line 187 (gallerypluginhelper_simple::loadplugin)
* in modules/core/AdminModules.inc at line 226 (gallerycoreapi::loadplugin)
* in modules/core/SiteAdmin.inc at line 159 (adminmodulesview::loadtemplate)
* in modules/core/classes/GalleryView.class at line 214 (siteadminview::loadtemplate)
* in main.php at line 302 (siteadminview::doloadtemplate)
* in main.php at line 86
* in main.php at line 77

Other info:
Gallery version 2.0-beta-3
PHP version 4.3.11 apache2handler
Webserver Apache/2.0.54 (Gentoo/Linux) PHP/4.3.11
Database mysql 4.0.24
Toolkits ImageMagick, NetPBM, Gd
Operating system Linux devil 2.6.11-gentoo-r8 #5 SMP Sat May 14 10:11:34 GMT 2005 i686
Browser Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.8) Gecko/20050511 Firefox/1.0.4

Please help me out as i would really like to use this module

Yes, if orgot to add the php tags.
I have the API issue too:

Incompatible module!
Core API Required: 3.0 (available: 5.8)
Module API Required: 0.9 (available: 0.11)
I guess i need to edit the file with the api versions i have?

edit: changed the core api in.inc from 3, 0 to 5 ,8 and it works perfectly

Great functionality !

Suppose I wanted to do the same for 'EDITING' functionality (A user can only edit their own pictures within a shared album) do I just copy the code and replace 'core.delete' with 'core.edit' ?

Regards,
iBuZze

any idea if it works with current 2.0.1?..

well..it's saidly not workin!

with some search and after checkin the database -as bharat recommended- i've found that the code does update/insert into table g2_AccessMap (for example values like this: 71213 31621 0 128 ), but inserts nothing into table g2_AccessSubscriberMap! so this 71213 g_accessListId does not have a pair in that table..
..and it's not workin :/

any idea how can it be broken at this stage? :o

;) must be my english, but what i tried to wrote is that the ACLid from accessMap is _not_ listed in accesssubscribermap
so it's definitely not fine i guess

That would be really cool as I am an official 'Php Numpty' (ie I just don't get it) But this does look like a cool module that would solve a lot of problems.

Kandi

..and as far as i know this won't work with current g2(.0.x) .

(Dev.note: As we tested it and got this result..and it is why we need that 'save->_save' change..)

joe7: ah right, forgot about that problem.
This should work in 2.0.x:

<?php
class JensPermsModule extends GalleryModule {

    function JensPermsModule() {
        global $gallery;
    
        $this->setId('jensperms');      /* this must match the directory name */
        $this->setName('Jens Permissions');   /* this is the module name            */
        $this->setDescription($gallery->i18n('Automatically set permissions for uploaded file'));
        $this->setVersion('0.8.8');
        $this->setGroup('gallery', $gallery->i18n('Gallery'));
        $this->setCallbacks('registerEventListeners');
        $this->setRequiredCoreApi(array(6, 0));
        $this->setRequiredModuleApi(array(2, 0));
    }

    /**
     * @see GalleryModule::registerEventListeners()
     */
    function registerEventListeners() {
        GalleryCoreApi::registerEventListener('GalleryEntity::save', 
            new JensPermsModule(), true);   /* true=disableForUnitTest */
    }


    /**
     * @see GalleryModule::autoConfigure
     */
    function autoConfigure() {
        /* We don't require any special configuration */
        return array(GalleryStatus::success(), true);
    }

    
    /**
     * Event handler for GalleryEntity::save event
     * Copy dimension / filesize limits when the album is created 
     *
     * @param object GalleryEvent the event
     * @return object GalleryStatus a status code
     */
    function handleEvent($event) {
        if ($event->getEventName() == 'GalleryEntity::save') {
            $item = $event->getEntity();
            if (GalleryUtilities::isA($item, 'GalleryDataItem') &&
                    $item->testPersistentFlag(STORAGE_FLAG_NEWLY_CREATED)) {
        	$itemId = $item->getId();

                /* Set permissions.. */
		global $gallery;
                $userId = $gallery->getActiveUserId();
                $gallery->addShutdownAction(array('GalleryCoreApi', 'addUserPermission'),
                                            array($itemId, $userId, 'core.delete'));
            }
        }
	return array(GalleryStatus::success(), null);
    }
}
?>

Thank you for this module. This is exactly what I was looking for. I installed it with 2.0.2 and it works great!

Look at the file you added, especially line 1 and 2. I think you'll find there is something added, probably a rogue backslash.

--Andy
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