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Host requests are directed to the host info handler.
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Makes the setent_add_ref() and setent_notify_*() functions more generic
to be reusable by the autofs responder.
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The common function could be reused in new responders
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* the internal request is now more generic and is decoupled from
account-specific data. There is a new sss_dp_issue_request() wrapper
that issues a BE request or registers a callback
* the public requests all use struct sss_dp_req_state as the tevent_req
state data. This allows to report back data from the internal request
even if the caller is just a callback notifier
* each specific request now uses an _info structure that contains all
the data necessary to construct a DBusMessage passed to provider
* each specific request now defines a sss_dp_get_$data_msg callback that
is called from the sss_dp_issue_request() common wraper. The purpose
of the wrapper is to construct a DBusMessage and bind it to a DBus
method so the message can be just sent over to back end
The miscellanous changes include:
* change SSS_DP_ constants to an enum. This way, a switch() would error
if a value is not handled.
* rename sss_dp_get_account_int_send() to sss_dp_internal_get_send()
request because the internal request is going to handle more than just
account data
* the DBus return values were renamed from err_maj, err_min to dp_err
and dp_ret respectively
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Some NSS maps such as 'services' require more values to be passed
to the data provider than just the name or ID. In these cases, we
will amend an optional component to filter value to pass to the
data provider backend.
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Instead of timing out the initgroups lookup on a per-cctx basis,
we will maintain a hash table of recently-seen users and use this
instead. This will allow SSSD to handle user's logging into
multiple services simultaneously more graciously, as well as
playing nicer with SSH (which makes calls to PAM both before and
after a fork).
https://fedorahosted.org/sssd/ticket/1063
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We will now re-read the confdb debug_level value when processing
the monitor_common_logrotate() function, which occurs when the
monitor receives a SIGHUP.
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Also adds an option to limit how often we check the ID provider,
so that conversations with multiple PAM requests won't update the
cache multiple times.
https://fedorahosted.org/sssd/ticket/749
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Currently we do not handle the open nss request after a reconnect and
wait until they timeout (which is a couple of minutes!). This patch adds
a handler that terminates all requests after a reconnect. Then responder
will return matching cache entries or nothing.
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Previously, if a second enumeration request arrived while one was
already being processed, each process would receive only a subset
of the total number of available users or groups. This is because
we were maintaining the response object as a global value in the
NSS responder. The second request would come in, see that the data
set was already populated, and start reading from wherever the
cursor was currently pointed.
With this patch, we now move the cursor to the client context
instead of the global NSS context.
Additionally, this patch completely rewrites the approach to
enumerations in the tevent_req style. This makes it much easier to
follow in the code.
In order to ensure that a slow or malicious client cannot hold
onto a reference for the setent result object indefinitely, we
set an expiration on the object. We use the enum_cache_timeout
here, since that is an appropriate value.
If the timeout fires during the normal operation of the get*ent()
loop of a client program, we will save the current values of the
read index so that we can resume as soon as the object has been
refreshed by an implicit setent call.
Instead of deleting the enumeration result object immediately
after the last in-progress client has read it, we'll keep the
object around for the lifetime of enum_cache_timeout. This way,
additional clients making enumeration requests can still access
the results in-memory.
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This is the second attempt to let the PAM client and the PAM responder
exchange their credentials, i.e. uid, gid and pid. Because this approach
does not require any message interchange between the client and the
server the protocol version number is not changed.
On the client side the connection is terminated it the responder is not
run by root. On the server side the effective uid and gid and the pid of
the client are available for future use.
The following additional changes are made by this patch:
- the checks of the ownership and the permissions on the PAM sockets are
enhanced
- internal error codes are introduced on the client side to generate
more specific log messages if an error occurs
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This reverts commit 5a88e963744e5da453e88b5c36499f04712df097.
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- check if the public socket belongs to root and has 0666 permissions
- use a SCM_CREDENTIALS message if available
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Also update BUILD.txt
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