I understand when you say the receiver should ask "Do I know or care about the sender of this Intent?" and "Is the Intent well-formed according to my input validation rules?". But I don't quite understand why the receiver should ask the question "Did the sender have a given permission?". Isn't this the task of the Security Manager (Reference Monitor) that takes care of the access control? Or am I missing something here?
On Wed, Feb 23, 2011 at 2:27 PM, Chris Palmer <[email protected]> wrote: > On Wed, Feb 23, 2011 at 10:13 AM, Anh-Duy Vu <[email protected]> > wrote: > > > Could I develop a service like installd and fire intents to other > > Android component and services without permission checking? > > Whether written in C or Java, an app can always fire any Intent it > wants to. But no other process has to listen, or act on it. > > Intent receivers can — should! — ask questions such as "Do I know or > care about the sender of this Intent?", "Did the sender have a given > Permission?", "Is the Intent well-formed according to my input > validation rules?", and so on. That's where the security comes from. > There is no magic. > > -- > You received this message because you are subscribed to the Google Groups > "Android Security Discussions" group. > To post to this group, send email to > [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/android-security-discuss?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Android Security Discussions" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/android-security-discuss?hl=en.
