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The basically matches Windows 2012R2, it's not 100%
but it's enough for our raw protocol tests to pass.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11344
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
BIND is the first pdu, which means the list of contexts is always empty.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11344
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
We should not use one "global" per connection variable to hold the
incoming and outgoing auth_info.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11344
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
The first pdu is always a BIND.
REQUEST pdus are only allowed once the authentication
is finished.
A simple anonymous authentication is finished after the BIND.
Real authentication may need additional ALTER or AUTH3 exchanges.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11344
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
On protocol errors we should send BIND_NAK or FAULT and mark the
connection as to be terminated.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11344
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
BIND_NAK or FAULT may mark a connection as to be terminated.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11344
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
For now we still force \\PIPE\\ in upper case, we may be able to remove
this and change it in our idl files later. But for now we better
behave like a windows server without changing too much.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11344
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
This depends on the type of the incoming pdu.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11344
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
These values are controlled by the client but only in a range between
2048 and 5840 (including these values in 8 byte steps).
recv and xmit result always in same min value.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11344
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
This will simplify checks in the following commits and avoids
derefencing dcesrv_auth->auth_info which is not always arround.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11344
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
pkt->u.*.auth_info.length is not the correct thing to check.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11344
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
We should only allow a combined payload of a response of at max 4 MBytes.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11344
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
This should give better error messages if the server doesn't support
a specific abstract/transfer syntax.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11344
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
We now avoid reusing the same auth_info structure for incoming and outgoing
values. We need to make sure that the remote server doesn't overwrite our own
values.
This will trigger some failures with our currently broken server,
which will be fixed in the next commits.
The broken server requires an dcerpc_auth structure with no credentials
in order to do an alter_context request that just creates a presentation
context without doing authentication.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11344
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
It handles the case of DCERPC_AUTH_TYPE_NONE just fine and it makes it
possible to do some verification in future.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11344
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
We should avoid using the global dcecli_security->auth_info struct for
individual requests.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11344
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
In future we want to verify that the auth_context_id from the server
is what we expect.
As Samba (<= 4.2.3) use a hardcoded value of 1 in responses, we
need to use that.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11344
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
This will simplify the following commits and avoids dereferencing
dcecli_security->auth_info.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11344
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
This prevents man in the middle downgrade attacks.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11616
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
This prevents man in the middle downgrade attacks.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11616
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
With this option turned off we only allow DCERPC_AUTH_LEVEL_{NONE,INTEGRITY,PRIVACY},
this means the reject any request with AUTH_LEVEL_CONNECT with ACCESS_DENIED.
We sadly need to keep this enabled by default for now.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11616
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
