r15298: Fix the build using a few hacks in the build system.

Recursive dependencies are now forbidden (the build system
will bail out if there are any).

I've split up auth_sam.c into auth_sam.c and sam.c. Andrew,
please rename sam.c / move its contents to whatever/wherever you think suits
best.
(This used to be commit 6646384aaf3e7fa2aa798c3e564b94b0617ec4d0)

1 files changed, 395 insertions, 0 deletions

diff --git a/source4/auth/sam.c b/source4/auth/sam.c
new file mode 100644
index 0000000000..a40e844f85
--- /dev/null
+++ b/source4/auth/sam.c
@@ -0,0 +1,395 @@
+/* 
+   Unix SMB/CIFS implementation.
+   Password and authentication handling
+   Copyright (C) Andrew Bartlett <abartlet@samba.org> 2001-2004
+   Copyright (C) Gerald Carter                             2003
+   Copyright (C) Stefan Metzmacher                         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.
+*/
+
+#include "includes.h"
+#include "system/time.h"
+#include "auth/auth.h"
+#include "db_wrap.h"
+#include "dsdb/samdb/samdb.h"
+#include "libcli/security/security.h"
+#include "libcli/ldap/ldap.h"
+#include "librpc/gen_ndr/ndr_security.h"
+
+const char *user_attrs[] = {
+	/* required for the krb5 kdc */
+	"objectClass",
+	"sAMAccountName",
+	"userPrincipalName",
+	"servicePrincipalName",
+	"msDS-KeyVersionNumber",
+	"krb5Key",
+
+	/* passwords */
+	"lmPwdHash", 
+	"ntPwdHash",
+
+	"userAccountControl",
+
+	"pwdLastSet",
+	"accountExpires",
+	
+	"objectSid",
+
+	/* check 'allowed workstations' */
+	"userWorkstations",
+		       
+	/* required for server_info, not access control: */
+	"displayName",
+	"scriptPath",
+	"profilePath",
+	"homeDirectory",
+	"homeDrive",
+	"lastLogon",
+	"lastLogoff",
+	"accountExpires",
+	"badPwdCount",
+	"logonCount",
+	"primaryGroupID",
+	NULL,
+};
+
+const char *domain_ref_attrs[] =  {"nETBIOSName", "nCName", 
+					  "dnsRoot", "objectClass", NULL};
+
+
+/****************************************************************************
+ Do a specific test for a SAM_ACCOUNT being vaild for this connection 
+ (ie not disabled, expired and the like).
+****************************************************************************/
+_PUBLIC_ NTSTATUS authsam_account_ok(TALLOC_CTX *mem_ctx,
+			    struct ldb_context *sam_ctx,
+			    uint32_t logon_parameters,
+			    struct ldb_message *msg,
+			    struct ldb_message *msg_domain_ref,
+			    const char *logon_workstation,
+			    const char *name_for_logs)
+{
+	uint16_t acct_flags;
+	const char *workstation_list;
+	NTTIME acct_expiry;
+	NTTIME must_change_time;
+	NTTIME last_set_time;
+
+	struct ldb_dn *domain_dn = samdb_result_dn(mem_ctx, msg_domain_ref, "nCName", ldb_dn_new(mem_ctx));
+
+	NTTIME now;
+	DEBUG(4,("authsam_account_ok: Checking SMB password for user %s\n", name_for_logs));
+
+	acct_flags = samdb_result_acct_flags(msg, "userAccountControl");
+	
+	acct_expiry = samdb_result_nttime(msg, "accountExpires", 0);
+	must_change_time = samdb_result_force_password_change(sam_ctx, mem_ctx, 
+							      domain_dn, msg);
+	last_set_time = samdb_result_nttime(msg, "pwdLastSet", 0);
+
+	workstation_list = samdb_result_string(msg, "userWorkstations", NULL);
+
+	/* Quit if the account was disabled. */
+	if (acct_flags & ACB_DISABLED) {
+		DEBUG(1,("authsam_account_ok: Account for user '%s' was disabled.\n", name_for_logs));
+		return NT_STATUS_ACCOUNT_DISABLED;
+	}
+
+	/* Quit if the account was locked out. */
+	if (acct_flags & ACB_AUTOLOCK) {
+		DEBUG(1,("authsam_account_ok: Account for user %s was locked out.\n", name_for_logs));
+		return NT_STATUS_ACCOUNT_LOCKED_OUT;
+	}
+
+	/* Test account expire time */
+	unix_to_nt_time(&now, time(NULL));
+	if (now > acct_expiry) {
+		DEBUG(1,("authsam_account_ok: Account for user '%s' has expired.\n", name_for_logs));
+		DEBUG(3,("authsam_account_ok: Account expired at '%s'.\n", 
+			 nt_time_string(mem_ctx, acct_expiry)));
+		return NT_STATUS_ACCOUNT_EXPIRED;
+	}
+
+	if (!(acct_flags & ACB_PWNOEXP)) {
+		/* check for immediate expiry "must change at next logon" */
+		if (must_change_time == 0 && last_set_time != 0) {
+			DEBUG(1,("sam_account_ok: Account for user '%s' password must change!.\n", 
+				 name_for_logs));
+			return NT_STATUS_PASSWORD_MUST_CHANGE;
+		}
+
+		/* check for expired password */
+		if ((must_change_time != 0) && (must_change_time < now)) {
+			DEBUG(1,("sam_account_ok: Account for user '%s' password expired!.\n", 
+				 name_for_logs));
+			DEBUG(1,("sam_account_ok: Password expired at '%s' unix time.\n", 
+				 nt_time_string(mem_ctx, must_change_time)));
+			return NT_STATUS_PASSWORD_EXPIRED;
+		}
+	}
+
+	/* Test workstation. Workstation list is comma separated. */
+	if (logon_workstation && workstation_list && *workstation_list) {
+		BOOL invalid_ws = True;
+		int i;
+		const char **workstations = str_list_make(mem_ctx, workstation_list, ",");
+		
+		for (i = 0; workstations && workstations[i]; i++) {
+			DEBUG(10,("sam_account_ok: checking for workstation match '%s' and '%s'\n",
+				  workstations[i], logon_workstation));
+
+			if (strequal(workstations[i], logon_workstation) == 0) {
+				invalid_ws = False;
+				break;
+			}
+		}
+
+		talloc_free(workstations);
+
+		if (invalid_ws) {
+			return NT_STATUS_INVALID_WORKSTATION;
+		}
+	}
+	
+	if (acct_flags & ACB_DOMTRUST) {
+		DEBUG(2,("sam_account_ok: Domain trust account %s denied by server\n", name_for_logs));
+		return NT_STATUS_NOLOGON_INTERDOMAIN_TRUST_ACCOUNT;
+	}
+	
+	if (!(logon_parameters & MSV1_0_ALLOW_SERVER_TRUST_ACCOUNT)) {
+		if (acct_flags & ACB_SVRTRUST) {
+			DEBUG(2,("sam_account_ok: Server trust account %s denied by server\n", name_for_logs));
+			return NT_STATUS_NOLOGON_SERVER_TRUST_ACCOUNT;
+		}
+	}
+	if (!(logon_parameters & MSV1_0_ALLOW_WORKSTATION_TRUST_ACCOUNT)) {
+		if (acct_flags & ACB_WSTRUST) {
+			DEBUG(4,("sam_account_ok: Wksta trust account %s denied by server\n", name_for_logs));
+			return NT_STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT;
+		}
+	}
+
+	return NT_STATUS_OK;
+}
+
+_PUBLIC_ NTSTATUS authsam_make_server_info(TALLOC_CTX *mem_ctx, struct ldb_context *sam_ctx,
+				  struct ldb_message *msg,
+				  struct ldb_message *msg_domain_ref,
+				  DATA_BLOB user_sess_key, DATA_BLOB lm_sess_key,
+				  struct auth_serversupplied_info **_server_info)
+{
+	struct auth_serversupplied_info *server_info;
+	struct ldb_message **group_msgs;
+	int group_ret;
+	const char *group_attrs[3] = { "sAMAccountType", "objectSid", NULL }; 
+	/* find list of sids */
+	struct dom_sid **groupSIDs = NULL;
+	struct dom_sid *account_sid;
+	struct dom_sid *primary_group_sid;
+	const char *str;
+	struct ldb_dn *ncname;
+	int i;
+	uint_t rid;
+	TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
+
+	group_ret = gendb_search(sam_ctx,
+				 tmp_ctx, NULL, &group_msgs, group_attrs,
+				 "(&(member=%s)(sAMAccountType=*))", 
+				 ldb_dn_linearize(tmp_ctx, msg->dn));
+	if (group_ret == -1) {
+		talloc_free(tmp_ctx);
+		return NT_STATUS_INTERNAL_DB_CORRUPTION;
+	}
+
+	server_info = talloc(mem_ctx, struct auth_serversupplied_info);
+	NT_STATUS_HAVE_NO_MEMORY(server_info);
+	
+	if (group_ret > 0) {
+		groupSIDs = talloc_array(server_info, struct dom_sid *, group_ret);
+		NT_STATUS_HAVE_NO_MEMORY(groupSIDs);
+	}
+
+	/* Need to unroll some nested groups, but not aliases */
+	for (i = 0; i < group_ret; i++) {
+		groupSIDs[i] = samdb_result_dom_sid(groupSIDs, 
+						    group_msgs[i], "objectSid");
+		NT_STATUS_HAVE_NO_MEMORY(groupSIDs[i]);
+	}
+
+	talloc_free(tmp_ctx);
+
+	account_sid = samdb_result_dom_sid(server_info, msg, "objectSid");
+	NT_STATUS_HAVE_NO_MEMORY(account_sid);
+
+	primary_group_sid = dom_sid_dup(server_info, account_sid);
+	NT_STATUS_HAVE_NO_MEMORY(primary_group_sid);
+
+	rid = samdb_result_uint(msg, "primaryGroupID", ~0);
+	if (rid == ~0) {
+		if (group_ret > 0) {
+			primary_group_sid = groupSIDs[0];
+		} else {
+			primary_group_sid = NULL;
+		}
+	} else {
+		primary_group_sid->sub_auths[primary_group_sid->num_auths-1] = rid;
+	}
+
+	server_info->account_sid = account_sid;
+	server_info->primary_group_sid = primary_group_sid;
+	
+	server_info->n_domain_groups = group_ret;
+	server_info->domain_groups = groupSIDs;
+
+	server_info->account_name = talloc_steal(server_info, samdb_result_string(msg, "sAMAccountName", NULL));
+
+	server_info->domain_name = talloc_steal(server_info, samdb_result_string(msg_domain_ref, "nETBIOSName", NULL));
+
+	str = samdb_result_string(msg, "displayName", "");
+	server_info->full_name = talloc_strdup(server_info, str);
+	NT_STATUS_HAVE_NO_MEMORY(server_info->full_name);
+
+	str = samdb_result_string(msg, "scriptPath", "");
+	server_info->logon_script = talloc_strdup(server_info, str);
+	NT_STATUS_HAVE_NO_MEMORY(server_info->logon_script);
+
+	str = samdb_result_string(msg, "profilePath", "");
+	server_info->profile_path = talloc_strdup(server_info, str);
+	NT_STATUS_HAVE_NO_MEMORY(server_info->profile_path);
+
+	str = samdb_result_string(msg, "homeDirectory", "");
+	server_info->home_directory = talloc_strdup(server_info, str);
+	NT_STATUS_HAVE_NO_MEMORY(server_info->home_directory);
+
+	str = samdb_result_string(msg, "homeDrive", "");
+	server_info->home_drive = talloc_strdup(server_info, str);
+	NT_STATUS_HAVE_NO_MEMORY(server_info->home_drive);
+
+	server_info->logon_server = talloc_strdup(server_info, lp_netbios_name());
+	NT_STATUS_HAVE_NO_MEMORY(server_info->logon_server);
+
+	server_info->last_logon = samdb_result_nttime(msg, "lastLogon", 0);
+	server_info->last_logoff = samdb_result_nttime(msg, "lastLogoff", 0);
+	server_info->acct_expiry = samdb_result_nttime(msg, "accountExpires", 0);
+	server_info->last_password_change = samdb_result_nttime(msg, "pwdLastSet", 0);
+
+	ncname = samdb_result_dn(mem_ctx, msg_domain_ref, "nCName", NULL);
+	if (!ncname) {
+		return NT_STATUS_INTERNAL_DB_CORRUPTION;
+	}
+	server_info->allow_password_change
+		= samdb_result_allow_password_change(sam_ctx, mem_ctx, 
+						     ncname, msg, "pwdLastSet");
+	server_info->force_password_change
+		= samdb_result_force_password_change(sam_ctx, mem_ctx, 
+						     ncname, msg);
+	
+	server_info->logon_count = samdb_result_uint(msg, "logonCount", 0);
+	server_info->bad_password_count = samdb_result_uint(msg, "badPwdCount", 0);
+
+	server_info->acct_flags = samdb_result_acct_flags(msg, "userAccountControl");
+
+	server_info->user_session_key = user_sess_key;
+	server_info->lm_session_key = lm_sess_key;
+
+	server_info->authenticated = True;
+
+	*_server_info = server_info;
+
+	return NT_STATUS_OK;
+}
+
+_PUBLIC_ NTSTATUS sam_get_results_principal(struct ldb_context *sam_ctx,
+				   TALLOC_CTX *mem_ctx, const char *principal,
+				   struct ldb_message ***msgs,
+				   struct ldb_message ***msgs_domain_ref)
+{			   
+	struct ldb_dn *user_dn, *domain_dn;
+	NTSTATUS nt_status;
+	TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
+	int ret;
+
+	if (!tmp_ctx) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	nt_status = crack_user_principal_name(sam_ctx, tmp_ctx, principal, &user_dn, &domain_dn);
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		talloc_free(tmp_ctx);
+		return nt_status;
+	}
+	
+	/* grab domain info from the reference */
+	ret = gendb_search(sam_ctx, tmp_ctx, NULL, msgs_domain_ref, domain_ref_attrs,
+			   "(ncName=%s)", ldb_dn_linearize(tmp_ctx, domain_dn));
+
+	if (ret != 1) {
+		talloc_free(tmp_ctx);
+		return NT_STATUS_INTERNAL_DB_CORRUPTION;
+	}
+	
+	/* pull the user attributes */
+	ret = gendb_search_dn(sam_ctx, tmp_ctx, user_dn, msgs, user_attrs);
+	if (ret != 1) {
+		talloc_free(tmp_ctx);
+		return NT_STATUS_INTERNAL_DB_CORRUPTION;
+	}
+	talloc_steal(mem_ctx, *msgs);
+	talloc_steal(mem_ctx, *msgs_domain_ref);
+	talloc_free(tmp_ctx);
+	
+	return NT_STATUS_OK;
+}
+				   
+/* Used in the gensec_gssapi and gensec_krb5 server-side code, where the PAC isn't available */
+NTSTATUS sam_get_server_info_principal(TALLOC_CTX *mem_ctx, const char *principal,
+				       struct auth_serversupplied_info **server_info)
+{
+	NTSTATUS nt_status;
+	DATA_BLOB user_sess_key = data_blob(NULL, 0);
+	DATA_BLOB lm_sess_key = data_blob(NULL, 0);
+
+	struct ldb_message **msgs;
+	struct ldb_message **msgs_domain_ref;
+	struct ldb_context *sam_ctx;
+
+	TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
+	if (!tmp_ctx) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	sam_ctx = samdb_connect(tmp_ctx, system_session(tmp_ctx));
+	if (sam_ctx == NULL) {
+		talloc_free(tmp_ctx);
+		return NT_STATUS_INVALID_SYSTEM_SERVICE;
+	}
+
+	nt_status = sam_get_results_principal(sam_ctx, tmp_ctx, principal, 
+					      &msgs, &msgs_domain_ref);
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		return nt_status;
+	}
+
+	nt_status = authsam_make_server_info(tmp_ctx, sam_ctx, msgs[0], msgs_domain_ref[0],
+					     user_sess_key, lm_sess_key,
+					     server_info);
+	if (NT_STATUS_IS_OK(nt_status)) {
+		talloc_steal(mem_ctx, *server_info);
+	}
+	talloc_free(tmp_ctx);
+	return nt_status;
+}