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BUG: https://bugzilla.samba.org/show_bug.cgi?id=12554
Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Andreas Schneider <asn@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
MIT krb5 1.9 version of gss_krb5_import_cred() may fail when importing
credentials from a keytab without specifying actual principal.
This was fixed in MIT krb5 1.9.2 (see commit
71c3be093db577aa52f6b9a9a3a9f442ca0d8f20 in MIT krb5-1.9 branch, git
master's version is bd18687a705a8a6cdcb7c140764d1a7c6a3381b5).
Move fallback code to the smb_gss_krb5_import_cred wrapper. We only
expect this fallback to happen with krb5 GSSAPI mechanism, thus hard
code use of krb5 mech when calling to gss_acquire_cred.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12611
Signed-off-by: Alexander Bokovoy <ab@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Autobuild-User(master): Alexander Bokovoy <ab@samba.org>
Autobuild-Date(master): Wed Mar 8 22:00:24 CET 2017 on sn-devel-144
Wrap gss_krb5_import_cred() to allow re-implementing it with
gss_acquire_cred_from() for newer MIT versions. gss_acquire_cred_from()
works fine with GSSAPI interposer (GSS-proxy) while
gss_krb5_import_cred() is not interposed yet.
The wrapper has additional parameter, krb5_context handle, to facilitate
with credentials cache name discovery. All our callers to
gss_krb5_import_cred() already have krb5 context handy.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12611
Signed-off-by: Alexander Bokovoy <ab@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Chris Lamb <chris@chris-lamb.co.uk>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
Our own convert_string_talloc() function handles a wider range
of unicode code points than the MIT krb5 or heimdal code.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12262
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Autobuild-User(master): Ralph Böhme <slow@samba.org>
Autobuild-Date(master): Tue Feb 21 20:08:16 CET 2017 on sn-devel-144
These files should not be executable.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Autobuild-User(master): Volker Lendecke <vl@samba.org>
Autobuild-Date(master): Wed Jan 11 20:21:01 CET 2017 on sn-devel-144
As the principal in the resulting ccache may not match the realm of the
target principal, we need to store the credentials twice.
The caller uses the ccache principal's realm to construct the
search key for the target principal.
If we get administrator@SAMBADOMAIN via the NTLMSSP authentication
and want to do s4u2selfproxy, we'll get ticket for
client realm: SAMBADOMAIN
client name: administrator
server realm: SAMBA.EXAMPLE.COM
server name: cifs/localdc
This is stored in credential cache, but
the caller will use cifs/localdc@SAMBADOMAIN as
target_principal name when it tries to use the
cache.
So also store the ticket as:
client realm: SAMBADOMAIN
client name: administrator
server realm: SAMBADOMAIN
server name: cifs/localdc
Note that it can always happen that the target is not in the clients
realm, so we always deal with changing realm names, so this is not
a s4u2self/proxy specific thing.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
krb5_cc_copy_creds() expects an already initialized output cache.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Sat Dec 24 21:04:23 CET 2016 on sn-devel-144
The server principal is required, so if not set create an obscure one.
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This reverts commit c0e8616669.
The krb5_init_keyblock function from MIT allocates the key but we
operate only on the contents.
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Signed-off-by: Anoop C S <anoopcs@redhat.com>
Reviewed-by: Michael Adam <obnox@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Autobuild-User(master): Michael Adam <obnox@samba.org>
Autobuild-Date(master): Thu Sep 1 21:02:54 CEST 2016 on sn-devel-144
This also removes the asn1util dependency from krb5_wrap and moves it to
libads which is the only user.
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
krb5_free_error() is availalbe in MIT and Heimdal. Both implementations
free the contents and the pointer. krb5_free_data_contents() is Heimdal
only. Which function you need to call depends.
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Use a better and consistent name and switch the arguments to reflect the
name.
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Heimdal and MIT Kerberos have different API to copy credentials from a
ccache. Wrap it via lib/krb5_wrap/.
Signed-off-by: Alexander Bokovoy <ab@samba.org>
Reviewed-by: Guenther Deschner <gd@samba.org>
Autobuild-User(master): Günther Deschner <gd@samba.org>
Autobuild-Date(master): Mon Jul 25 21:27:58 CEST 2016 on sn-devel-144
Guenther
Signed-off-by: Guenther Deschner <gd@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Sat Jul 23 09:50:46 CEST 2016 on sn-devel-144
MIT only defined this as CKSUMTYPE_HMAC_SHA1_96_AES128,
while Heimdal has CKSUMTYPE_HMAC_SHA1_96_AES_128.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
Just a small typo fix where type and variable were flipped.
Signed-off-by: Jose A. Rivera <jarrpa@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Autobuild-User(master): Ralph Böhme <slow@samba.org>
Autobuild-Date(master): Sat Jun 25 22:43:27 CEST 2016 on sn-devel-144
This fixes an regression introduced in 5c5d586d3e at a higher level
in the caller smb_krb5_kt_add_entry(): calling smb_krb5_kt_add_entry
with keep_old_entries=false resulted in only one enctype per principal
remaining in the exported keytab.
The function smb_krb5_kt_seek_and_delete_old_entries() is called from
smb_krb5_kt_add_entry() when adding keys to a keytab. When the keytab
contains keys with the same kvno as the key to be added and
keep_old_entries is false, the key is deleted without checking the
encryption type of the key. This means that when adding keys for a
principal only the last enctype will be in the exported keytab.
Fix this by checking the encryption type and only treat a key as "old"
if keytab_key_kvno <= new_key_kvno and keytab_key_enctype ==
new_key_enctype.
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Unused in this commit, the next commit will use it to avoid deleting
keys with the same kvno but a different enctype.
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
We request a TGT in uppercase from the KDC. We turned on
canonicalization for that so the KDC returns the principal in lowercase
cause of this. As we use the uppercase prinicpal to create the ccache we
fail to find the tickets we need later because it is stored in the
incorrect case. You have to use the princial returned by the KDC here.
Signed-off-by: Andreas Schneider <asn@cryptomilk.org>
Reviewed-by: Sumit Bose <sbose@redhat.com>
Reviewed-by: Guenther Deschner <gd@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This is a preparation to move smb_krb5_kt_add_entry() to krb5_wrap.
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Guenther Deschner <gd@samba.org>
Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date(master): Mon Mar 7 17:57:39 CET 2016 on sn-devel-144
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Fri Nov 6 13:43:45 CET 2015 on sn-devel-104
We request a TGT in uppercase from the KDC. We turned on
canonicalization for that so the KDC returns the principal in lowercase
cause of this. As we use the uppercase prinicpal to create the ccache we
fail to find the tickets we need later because it is stored in the
incorrect case. You have to use the princial returned by the KDC here.
Signed-off-by: Andreas Schneider <asn@cryptomilk.org>
Reviewed-by: Alexander Bokovoy <ab@samba.org>
Use standard libkrb5 calls instead.
Signed-off-by: Simo Sorce <idra@samba.org>
Reviewed-by: Guenther Deschner <gd@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlet <abartlet@samba.org>
