The 'strtok_r' function requires passing a NULL as the first parameter
on subsequent calls in order to ensure the code picks up where it left
off on a previous call. However, Coverity doesn't quite realize this
and points out that if a NULL was passed in as the third argument it
would result in a possible NULL deref because the strtok_r function will
assign the third argument to the first in the call is NULL.
Change-Id: I7a9d08d0d4eae76a5207d285e32a25d1b384a57f
Fixes: Coverity CID 135186
We check that the amount of commands is not more than
we have but we don't check it the other way. It appears
that the vector is allowed to be bigger than the amount
of commands. So we match a prefix of a longer command
depending on the installation order.
Sometimes a control interface command cannot be processed
and responded immediately, but we need to process it asynchronously.
In order to support this, we introduce the 'ctrl_cmd_def', which
represents such a deferred command. It is created by the service
implementing the command using ctrl_cmd_def_make(), and a response is
later sent using ctrl_cmd_def_send().
ctrl_cmd_def_is_zombie() must be called to handle the case where
the control connection has disconnected/died between receiving the
command and sending the response.
Harald Welte
Holger Hans Peter Freyther