Re: [development] Rules action to impersonate a user

21 Jan 2013

      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@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@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 = $previous;
would work.
On Mon, Jan 21, 2013 at 10:37 AM, Lluís Forns <enboig@gmail.com> wrote:
...
Some of my scheduled task needs to run as the user who triggered them
(not anonymous neither admin); so I thought of writing two actions:
- One to impersonate a user, which will receive uid as an argument.
- Another to undo the impersonate.
All the called actions should be between them.
Anybody see any fault in this idea or the actions code?
Thanks.
function wu_action_impersonate($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);
}
--
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--
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.