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samba-mirror/source4/auth/gensec/gensec.h

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/*
Unix SMB/CIFS implementation.
Generic Authentication Interface
Copyright (C) Andrew Tridgell 2003
r6028: A MAJOR update to intergrate the new credentails system fully with GENSEC, and to pull SCHANNEL into GENSEC, by making it less 'special'. GENSEC now no longer has it's own handling of 'set username' etc, instead it uses cli_credentials calls. In order to link the credentails code right though Samba, a lot of interfaces have changed to remove 'username, domain, password' arguments, and these have been replaced with a single 'struct cli_credentials'. In the session setup code, a new parameter 'workgroup' contains the client/server current workgroup, which seems unrelated to the authentication exchange (it was being filled in from the auth info). This allows in particular kerberos to only call back for passwords when it actually needs to perform the kinit. The kerberos code has been modified not to use the SPNEGO provided 'principal name' (in the mechListMIC), but to instead use the name the host was connected to as. This better matches Microsoft behaviour, is more secure and allows better use of standard kerberos functions. To achieve this, I made changes to our socket code so that the hostname (before name resolution) is now recorded on the socket. In schannel, most of the code from librpc/rpc/dcerpc_schannel.c is now in libcli/auth/schannel.c, and it looks much more like a standard GENSEC module. The actual sign/seal code moved to libcli/auth/schannel_sign.c in a previous commit. The schannel credentails structure is now merged with the rest of the credentails, as many of the values (username, workstation, domain) where already present there. This makes handling this in a generic manner much easier, as there is no longer a custom entry-point. The auth_domain module continues to be developed, but is now just as functional as auth_winbind. The changes here are consequential to the schannel changes. The only removed function at this point is the RPC-LOGIN test (simulating the load of a WinXP login), which needs much more work to clean it up (it contains copies of too much code from all over the torture suite, and I havn't been able to penetrate its 'structure'). Andrew Bartlett (This used to be commit 2301a4b38a21aa60917973451687063d83d18d66)
2005-03-24 07:14:06 +03:00
Copyright (C) Andrew Bartlett <abartlet@samba.org> 2004-2005
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#define GENSEC_OID_NTLMSSP "1 3 6 1 4 1 311 2 2 10"
#define GENSEC_OID_SPNEGO "1 3 6 1 5 5 2"
#define GENSEC_OID_KERBEROS5 "1 2 840 113554 1 2 2"
#define GENSEC_OID_KERBEROS5_OLD "1 2 840 48018 1 2 2"
#define GENSEC_OID_KERBEROS5_USER2USER "1 2 840 113554 1 2 2 3"
struct gensec_security;
struct gensec_target {
const char *principal;
const char *hostname;
const struct sock_addr *addr;
const char *service;
};
#define GENSEC_FEATURE_SESSION_KEY 0x00000001
#define GENSEC_FEATURE_SIGN 0x00000002
#define GENSEC_FEATURE_SEAL 0x00000004
#define GENSEC_FEATURE_DCE_STYLE 0x00000008
/* GENSEC mode */
enum gensec_role
{
GENSEC_SERVER,
GENSEC_CLIENT
};
struct auth_session_info;
struct gensec_security_ops {
const char *name;
const char *sasl_name;
uint8_t auth_type; /* 0 if not offered on DCE-RPC */
r5902: A rather large change... I wanted to add a simple 'workstation' argument to the DCERPC authenticated binding calls, but this patch kind of grew from there. With SCHANNEL, the 'workstation' name (the netbios name of the client) matters, as this is what ties the session between the NETLOGON ops and the SCHANNEL bind. This changes a lot of files, and these will again be changed when jelmer does the credentials work. I also correct some schannel IDL to distinguish between workstation names and account names. The distinction matters for domain trust accounts. Issues in handling this (issues with lifetime of talloc pointers) caused me to change the 'creds_CredentialsState' and 'struct dcerpc_binding' pointers to always be talloc()ed pointers. In the schannel DB, we now store both the domain and computername, and query on both. This should ensure we fault correctly when the domain is specified incorrectly in the SCHANNEL bind. In the RPC-SCHANNEL test, I finally fixed a bug that vl pointed out, where the comment claimed we re-used a connection, but in fact we made a new connection. This was achived by breaking apart some of the dcerpc_secondary_connection() logic. The addition of workstation handling was also propogated to NTLMSSP and GENSEC, for completeness. The RPC-SAMSYNC test has been cleaned up a little, using a loop over usernames/passwords rather than manually expanded tests. This will be expanded further (the code in #if 0 in this patch) to use a newly created user account for testing. In making this test pass test_rpc.sh, I found a bug in the RPC-ECHO server, caused by the removal of [ref] and the assoicated pointer from the IDL. This has been re-added, until the underlying pidl issues are solved. (This used to be commit 824289dcc20908ddec957a4a892a103eec2da9b9)
2005-03-19 11:34:43 +03:00
const char *oid; /* NULL if not offered by SPNEGO */
NTSTATUS (*client_start)(struct gensec_security *gensec_security);
NTSTATUS (*server_start)(struct gensec_security *gensec_security);
NTSTATUS (*update)(struct gensec_security *gensec_security, TALLOC_CTX *out_mem_ctx,
const DATA_BLOB in, DATA_BLOB *out);
NTSTATUS (*seal_packet)(struct gensec_security *gensec_security, TALLOC_CTX *sig_mem_ctx,
uint8_t *data, size_t length,
const uint8_t *whole_pdu, size_t pdu_length,
DATA_BLOB *sig);
NTSTATUS (*sign_packet)(struct gensec_security *gensec_security, TALLOC_CTX *sig_mem_ctx,
const uint8_t *data, size_t length,
const uint8_t *whole_pdu, size_t pdu_length,
DATA_BLOB *sig);
size_t (*sig_size)(struct gensec_security *gensec_security);
NTSTATUS (*check_packet)(struct gensec_security *gensec_security, TALLOC_CTX *sig_mem_ctx,
const uint8_t *data, size_t length,
const uint8_t *whole_pdu, size_t pdu_length,
const DATA_BLOB *sig);
NTSTATUS (*unseal_packet)(struct gensec_security *gensec_security, TALLOC_CTX *sig_mem_ctx,
uint8_t *data, size_t length,
const uint8_t *whole_pdu, size_t pdu_length,
DATA_BLOB *sig);
NTSTATUS (*wrap)(struct gensec_security *gensec_security,
TALLOC_CTX *mem_ctx,
const DATA_BLOB *in,
DATA_BLOB *out);
NTSTATUS (*unwrap)(struct gensec_security *gensec_security,
TALLOC_CTX *mem_ctx,
const DATA_BLOB *in,
DATA_BLOB *out);
NTSTATUS (*session_key)(struct gensec_security *gensec_security, DATA_BLOB *session_key);
NTSTATUS (*session_info)(struct gensec_security *gensec_security,
struct auth_session_info **session_info);
BOOL (*have_feature)(struct gensec_security *gensec_security,
uint32_t feature);
BOOL enabled;
};
#define GENSEC_INTERFACE_VERSION 0
struct gensec_security {
gensec_password_callback password_callback;
void *password_callback_private;
const struct gensec_security_ops *ops;
void *private_data;
r6028: A MAJOR update to intergrate the new credentails system fully with GENSEC, and to pull SCHANNEL into GENSEC, by making it less 'special'. GENSEC now no longer has it's own handling of 'set username' etc, instead it uses cli_credentials calls. In order to link the credentails code right though Samba, a lot of interfaces have changed to remove 'username, domain, password' arguments, and these have been replaced with a single 'struct cli_credentials'. In the session setup code, a new parameter 'workgroup' contains the client/server current workgroup, which seems unrelated to the authentication exchange (it was being filled in from the auth info). This allows in particular kerberos to only call back for passwords when it actually needs to perform the kinit. The kerberos code has been modified not to use the SPNEGO provided 'principal name' (in the mechListMIC), but to instead use the name the host was connected to as. This better matches Microsoft behaviour, is more secure and allows better use of standard kerberos functions. To achieve this, I made changes to our socket code so that the hostname (before name resolution) is now recorded on the socket. In schannel, most of the code from librpc/rpc/dcerpc_schannel.c is now in libcli/auth/schannel.c, and it looks much more like a standard GENSEC module. The actual sign/seal code moved to libcli/auth/schannel_sign.c in a previous commit. The schannel credentails structure is now merged with the rest of the credentails, as many of the values (username, workstation, domain) where already present there. This makes handling this in a generic manner much easier, as there is no longer a custom entry-point. The auth_domain module continues to be developed, but is now just as functional as auth_winbind. The changes here are consequential to the schannel changes. The only removed function at this point is the RPC-LOGIN test (simulating the load of a WinXP login), which needs much more work to clean it up (it contains copies of too much code from all over the torture suite, and I havn't been able to penetrate its 'structure'). Andrew Bartlett (This used to be commit 2301a4b38a21aa60917973451687063d83d18d66)
2005-03-24 07:14:06 +03:00
struct cli_credentials *credentials;
struct gensec_target target;
enum gensec_role gensec_role;
BOOL subcontext;
uint32_t want_features;
};
/* this structure is used by backends to determine the size of some critical types */
struct gensec_critical_sizes {
int interface_version;
int sizeof_gensec_security_ops;
int sizeof_gensec_security;
};
/* pre-declare schannel structure for schannel backend */
struct schannel_state;