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[Launchpad Bug Tracker <928376@xxxxxxxxxxxxxxxxxx>]

** Branch linked: lp:~openerp-dev/openobject-server/trunk-zipped-module-
precedence

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https://bugs.launchpad.net/bugs/928376

Title:
  file_open is not safe and performs too many useless syscalls

Status in OpenERP Server:
  In Progress

Bug description:
  It happens with 5.0 and certainly with 6.1 too.

  When you update the list of modules, the application calls:
    tools.file_open(terp_file)

  And file_open will browse all the parents of the "addons_path" for a zip file ... 
  I've added a statement to trace the call to "open()" :

  open('/home/florent/erpdemo/parts/openerp-server/bin/addons/account.zip', 'rb')
  open('/home/florent/erpdemo/parts/openerp-server/bin/addons.zip', 'rb')
  open('/home/florent/erpdemo/parts/openerp-server/bin.zip', 'rb')
  open('/home/florent/erpdemo/parts/openerp-server.zip', 'rb')
  open('/home/florent/erpdemo/parts.zip', 'rb')
  open('/home/florent/erpdemo.zip', 'rb')
  open('/home/florent.zip', 'rb')
  open('/home.zip', 'rb')
  open('/.zip', 'rb')

  This behaviour is seen on module installation or upgrade too.
  It is probably a security issue which impacts performance as well.

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