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This allows us to control what groups should be added in what use cases, and in particular to more carefully control the introduction of the 'authenticated' group. In particular, in the 'service_named_pipe' protocol, we do not have control over the addition of the authenticated users group, so we key of 'is this user the anonymous SID'. This also takes more care to allocate the right length ptoken->sids Andrew Bartlett
327 lines
11 KiB
C
327 lines
11 KiB
C
/*
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Unix SMB/CIFS implementation.
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Standardised Authentication types
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Copyright (C) Andrew Bartlett 2001
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Copyright (C) Stefan Metzmacher 2005
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _SAMBA_AUTH_H
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#define _SAMBA_AUTH_H
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#include "librpc/gen_ndr/ndr_krb5pac.h"
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extern const char *krbtgt_attrs[];
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extern const char *server_attrs[];
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extern const char *user_attrs[];
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union netr_Validation;
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struct netr_SamBaseInfo;
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struct netr_SamInfo3;
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struct loadparm_context;
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/* modules can use the following to determine if the interface has changed
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* please increment the version number after each interface change
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* with a comment and maybe update struct auth_critical_sizes.
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*/
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/* version 1 - version from samba 3.0 - metze */
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/* version 2 - initial samba4 version - metze */
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/* version 3 - subsequent samba4 version - abartlet */
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/* version 4 - subsequent samba4 version - metze */
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/* version 0 - till samba4 is stable - metze */
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#define AUTH_INTERFACE_VERSION 0
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#define USER_INFO_CASE_INSENSITIVE_USERNAME 0x01 /* username may be in any case */
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#define USER_INFO_CASE_INSENSITIVE_PASSWORD 0x02 /* password may be in any case */
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#define USER_INFO_DONT_CHECK_UNIX_ACCOUNT 0x04 /* don't check unix account status */
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#define USER_INFO_INTERACTIVE_LOGON 0x08 /* don't check unix account status */
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#define AUTH_SESSION_INFO_DEFAULT_GROUPS 0x01 /* Add the user to the default world and network groups */
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#define AUTH_SESSION_INFO_AUTHENTICATED 0x02 /* Add the user to the 'authenticated users' group */
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#define AUTH_SESSION_INFO_ENTERPRISE_DC 0x04 /* Add the user to the 'enterprise DC' group */
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enum auth_password_state {
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AUTH_PASSWORD_RESPONSE,
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AUTH_PASSWORD_HASH,
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AUTH_PASSWORD_PLAIN
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};
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struct auth_usersupplied_info
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{
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const char *workstation_name;
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const struct tsocket_address *remote_host;
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uint32_t logon_parameters;
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bool mapped_state;
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/* the values the client gives us */
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struct {
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const char *account_name;
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const char *domain_name;
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} client, mapped;
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enum auth_password_state password_state;
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union {
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struct {
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DATA_BLOB lanman;
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DATA_BLOB nt;
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} response;
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struct {
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struct samr_Password *lanman;
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struct samr_Password *nt;
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} hash;
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char *plaintext;
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} password;
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uint32_t flags;
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};
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struct auth_serversupplied_info
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{
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struct dom_sid *account_sid;
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struct dom_sid *primary_group_sid;
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size_t n_domain_groups;
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struct dom_sid **domain_groups;
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DATA_BLOB user_session_key;
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DATA_BLOB lm_session_key;
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const char *account_name;
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const char *domain_name;
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const char *full_name;
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const char *logon_script;
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const char *profile_path;
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const char *home_directory;
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const char *home_drive;
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const char *logon_server;
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NTTIME last_logon;
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NTTIME last_logoff;
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NTTIME acct_expiry;
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NTTIME last_password_change;
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NTTIME allow_password_change;
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NTTIME force_password_change;
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uint16_t logon_count;
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uint16_t bad_password_count;
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uint32_t acct_flags;
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bool authenticated;
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struct PAC_SIGNATURE_DATA pac_srv_sig, pac_kdc_sig;
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};
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struct auth_method_context;
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struct auth_check_password_request;
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struct auth_context;
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struct auth_session_info;
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struct ldb_dn;
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struct auth_operations {
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const char *name;
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/* If you are using this interface, then you are probably
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* getting something wrong. This interface is only for
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* security=server, and makes a number of compromises to allow
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* that. It is not compatible with being a PDC. */
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NTSTATUS (*get_challenge)(struct auth_method_context *ctx, TALLOC_CTX *mem_ctx, uint8_t chal[8]);
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/* Given the user supplied info, check if this backend want to handle the password checking */
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NTSTATUS (*want_check)(struct auth_method_context *ctx, TALLOC_CTX *mem_ctx,
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const struct auth_usersupplied_info *user_info);
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/* Given the user supplied info, check a password */
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NTSTATUS (*check_password)(struct auth_method_context *ctx, TALLOC_CTX *mem_ctx,
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const struct auth_usersupplied_info *user_info,
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struct auth_serversupplied_info **server_info);
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/* Lookup a 'server info' return based only on the principal */
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NTSTATUS (*get_server_info_principal)(TALLOC_CTX *mem_ctx,
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struct auth_context *auth_context,
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const char *principal,
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struct ldb_dn *user_dn,
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struct auth_serversupplied_info **server_info);
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};
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struct auth_method_context {
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struct auth_method_context *prev, *next;
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struct auth_context *auth_ctx;
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const struct auth_operations *ops;
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int depth;
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void *private_data;
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};
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struct auth_context {
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struct {
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/* Who set this up in the first place? */
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const char *set_by;
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bool may_be_modified;
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DATA_BLOB data;
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} challenge;
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/* methods, in the order they should be called */
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struct auth_method_context *methods;
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/* the event context to use for calls that can block */
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struct tevent_context *event_ctx;
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/* the messaging context which can be used by backends */
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struct messaging_context *msg_ctx;
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/* loadparm context */
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struct loadparm_context *lp_ctx;
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/* SAM database for this local machine - to fill in local groups, or to authenticate local NTLM users */
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struct ldb_context *sam_ctx;
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NTSTATUS (*check_password)(struct auth_context *auth_ctx,
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TALLOC_CTX *mem_ctx,
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const struct auth_usersupplied_info *user_info,
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struct auth_serversupplied_info **server_info);
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NTSTATUS (*get_challenge)(struct auth_context *auth_ctx, uint8_t chal[8]);
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bool (*challenge_may_be_modified)(struct auth_context *auth_ctx);
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NTSTATUS (*set_challenge)(struct auth_context *auth_ctx, const uint8_t chal[8], const char *set_by);
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NTSTATUS (*get_server_info_principal)(TALLOC_CTX *mem_ctx,
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struct auth_context *auth_ctx,
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const char *principal,
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struct ldb_dn *user_dn,
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struct auth_serversupplied_info **server_info);
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NTSTATUS (*generate_session_info)(TALLOC_CTX *mem_ctx,
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struct auth_context *auth_context,
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struct auth_serversupplied_info *server_info,
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uint32_t session_info_flags,
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struct auth_session_info **session_info);
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};
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/* this structure is used by backends to determine the size of some critical types */
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struct auth_critical_sizes {
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int interface_version;
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int sizeof_auth_operations;
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int sizeof_auth_methods;
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int sizeof_auth_context;
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int sizeof_auth_usersupplied_info;
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int sizeof_auth_serversupplied_info;
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};
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NTSTATUS encrypt_user_info(TALLOC_CTX *mem_ctx, struct auth_context *auth_context,
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enum auth_password_state to_state,
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const struct auth_usersupplied_info *user_info_in,
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const struct auth_usersupplied_info **user_info_encrypted);
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#include "auth/session.h"
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#include "auth/system_session_proto.h"
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struct ldb_message;
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struct ldb_context;
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struct gensec_security;
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NTSTATUS auth_get_challenge(struct auth_context *auth_ctx, uint8_t chal[8]);
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NTSTATUS authsam_account_ok(TALLOC_CTX *mem_ctx,
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struct ldb_context *sam_ctx,
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uint32_t logon_parameters,
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struct ldb_dn *domain_dn,
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struct ldb_message *msg,
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const char *logon_workstation,
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const char *name_for_logs,
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bool allow_domain_trust,
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bool password_change);
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NTSTATUS authsam_expand_nested_groups(struct ldb_context *sam_ctx,
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struct ldb_val *dn_val, const bool only_childs, const char *filter,
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TALLOC_CTX *res_sids_ctx, struct dom_sid ***res_sids,
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unsigned int *num_res_sids);
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struct auth_session_info *system_session(struct loadparm_context *lp_ctx);
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NTSTATUS authsam_make_server_info(TALLOC_CTX *mem_ctx, struct ldb_context *sam_ctx,
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const char *netbios_name,
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const char *domain_name,
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struct ldb_dn *domain_dn,
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struct ldb_message *msg,
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DATA_BLOB user_sess_key, DATA_BLOB lm_sess_key,
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struct auth_serversupplied_info **_server_info);
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NTSTATUS auth_system_session_info(TALLOC_CTX *parent_ctx,
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struct loadparm_context *lp_ctx,
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struct auth_session_info **_session_info) ;
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NTSTATUS auth_nt_status_squash(NTSTATUS nt_status);
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NTSTATUS auth_context_create_methods(TALLOC_CTX *mem_ctx, const char **methods,
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struct tevent_context *ev,
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struct messaging_context *msg,
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struct loadparm_context *lp_ctx,
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struct ldb_context *sam_ctx,
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struct auth_context **auth_ctx);
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NTSTATUS auth_context_create(TALLOC_CTX *mem_ctx,
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struct tevent_context *ev,
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struct messaging_context *msg,
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struct loadparm_context *lp_ctx,
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struct auth_context **auth_ctx);
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NTSTATUS auth_context_create_from_ldb(TALLOC_CTX *mem_ctx, struct ldb_context *ldb, struct auth_context **auth_ctx);
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NTSTATUS auth_check_password(struct auth_context *auth_ctx,
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TALLOC_CTX *mem_ctx,
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const struct auth_usersupplied_info *user_info,
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struct auth_serversupplied_info **server_info);
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NTSTATUS auth_init(void);
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NTSTATUS auth_register(const struct auth_operations *ops);
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NTSTATUS server_service_auth_init(void);
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NTSTATUS authenticate_username_pw(TALLOC_CTX *mem_ctx,
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struct tevent_context *ev,
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struct messaging_context *msg,
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struct loadparm_context *lp_ctx,
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const char *nt4_domain,
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const char *nt4_username,
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const char *password,
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struct auth_session_info **session_info);
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struct tevent_req *auth_check_password_send(TALLOC_CTX *mem_ctx,
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struct tevent_context *ev,
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struct auth_context *auth_ctx,
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const struct auth_usersupplied_info *user_info);
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NTSTATUS auth_check_password_recv(struct tevent_req *req,
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TALLOC_CTX *mem_ctx,
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struct auth_serversupplied_info **server_info);
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bool auth_challenge_may_be_modified(struct auth_context *auth_ctx);
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NTSTATUS auth_context_set_challenge(struct auth_context *auth_ctx, const uint8_t chal[8], const char *set_by);
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NTSTATUS auth_get_server_info_principal(TALLOC_CTX *mem_ctx,
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struct auth_context *auth_ctx,
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const char *principal,
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struct ldb_dn *user_dn,
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struct auth_serversupplied_info **server_info);
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NTSTATUS samba_server_gensec_start(TALLOC_CTX *mem_ctx,
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struct tevent_context *event_ctx,
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struct messaging_context *msg_ctx,
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struct loadparm_context *lp_ctx,
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struct cli_credentials *server_credentials,
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const char *target_service,
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struct gensec_security **gensec_context);
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#endif /* _SMBAUTH_H_ */
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