[development] Rules action to impersonate a user

[Lluís Forns]

My code was from a module where impersonation recursively could happen,
this is why I use a stack to save user state. I am also saving it to
session and not using a static variable because I may uses batch functions.

But I see some problems right now:
- To be safe impersonation should be saved into static variables (and
"using session_save_session(FALSE);" ), so if anything goes wrong, $user is
not afected.
- If I want to be able to execute every Rules action in a batch, I need to
change user "per action"

Any idea of how to "inject" code before and after a rule action?


2013/1/21 Walt Daniels <wdlists at gmail.com>

> We do the latter simple trick in our store code so we can show people the
> member prices. We have a dummy id that is a member so we switch to it, pick
> up the price and use it so we can show both member and non-member prices on
> the screen.
>
>
> On Mon, Jan 21, 2013 at 9:18 AM, Christian López Espínola <
> penyaskito at computer.org> wrote:
>
>> Haven't tested your code, but maybe you want to take a look at masquerade_switch_user
>> and masquerade_switch_back:
>> http://drupalcode.org/project/masquerade.git/blob/HEAD:/masquerade.module
>> .
>>
>> And if the impersonation is only for the given request, maybe just
>>
>>  global $user;
>>  $previous = $user;
>>  $user = user_load($uid);
>>  // Do your stuff.
>>  $user = $previous;
>>
>> would work.
>>
>>
>>
>> On Mon, Jan 21, 2013 at 10:37 AM, Lluís Forns <enboig at gmail.com> wrote:
>>
>>> Some of my scheduled task needs to run as the user who triggered them
>>> (not anonymous neither admin); so I thought of writing two actions:
>>> - One to impersonate a user, which will receive uid as an argument.
>>> - Another to undo the impersonate.
>>> All the called actions should be between them.
>>>
>>> Anybody see any fault in this idea or the actions code?
>>>
>>> Thanks.
>>>
>>> function wu_action_impersonate($uid) {
>>>   global $user;
>>>   if (!array_key_exists('wu_action_impersonate', $_SESSION)) {
>>>     $_SESSION['wu_action_impersonate'] = array();
>>>   }
>>>   array_push($_SESSION['wu_action_impersonate'], $user);
>>>   session_save_session(FALSE);
>>>   $user = user_load($uid);
>>>   user_load($uid);
>>> }
>>>
>>> function wu_action_unimpersonate() {
>>>   global $user;
>>>   if (array_key_exists('wu_action_impersonate', $_SESSION)) {
>>>     if (!empty($_SESSION['wu_action_impersonate'])) {
>>>       $user = array_pop($_SESSION['wu_action_impersonate']);
>>>     }
>>>     if (empty($_SESSION['wu_action_impersonate'])) {
>>>       unset($_SESSION['wu_action_impersonate']);
>>>     }
>>>   }
>>>   session_save_session(TRUE);
>>> }
>>>
>>> --
>>> *Ser freak no és imprescindible per ser informàtic, però ajuda.
>>> *La vida no ha de ser feliç, ha de ser plena.
>>> *Abans d'imprimir aquest missatge, pensa en el medi ambient.
>>>
>>
>>
>>
>> --
>> Cheers,
>>
>> Christian López Espínola <penyaskito AT computer DOT org>
>> http://twitter.com/penyaskito | http://penyaskito.com
>>
>
>


-- 
*Ser freak no és imprescindible per ser informàtic, però ajuda.
*La vida no ha de ser feliç, ha de ser plena.
*Abans d'imprimir aquest missatge, pensa en el medi ambient.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.drupal.org/pipermail/development/attachments/20130121/193bef9b/attachment-0001.html