-/*
+/*
Unix SMB/CIFS implementation.
User credentials handling (as regards on-disk files)
Copyright (C) Jelmer Vernooij 2005
Copyright (C) Tim Potter 2001
Copyright (C) Andrew Bartlett <abartlet@samba.org> 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include "param/secrets.h"
#include "system/filesys.h"
#include "auth/credentials/credentials.h"
+#include "auth/credentials/credentials_internal.h"
#include "auth/credentials/credentials_proto.h"
#include "auth/credentials/credentials_krb5.h"
#include "auth/kerberos/kerberos_util.h"
#include "dbwrap/dbwrap.h"
#include "dbwrap/dbwrap_open.h"
#include "lib/util/util_tdb.h"
+#include "libds/common/roles.h"
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_AUTH
/**
* Fill in credentials for the machine trust account, from the secrets database.
- *
+ *
* @param cred Credentials structure to fill in
* @retval NTSTATUS error detailing any failure
*/
-_PUBLIC_ NTSTATUS cli_credentials_set_secrets(struct cli_credentials *cred,
- struct loadparm_context *lp_ctx,
- struct ldb_context *ldb,
- const char *base,
- const char *filter,
- char **error_string)
+static NTSTATUS cli_credentials_set_secrets_lct(struct cli_credentials *cred,
+ struct loadparm_context *lp_ctx,
+ struct ldb_context *ldb,
+ const char *base,
+ const char *filter,
+ time_t secrets_tdb_last_change_time,
+ const char *secrets_tdb_password,
+ char **error_string)
{
TALLOC_CTX *mem_ctx;
-
+
int ldb_ret;
struct ldb_message *msg;
-
+
const char *machine_account;
const char *password;
const char *domain;
const char *salt_principal;
char *keytab;
const struct ldb_val *whenChanged;
+ time_t lct;
/* ok, we are going to get it now, don't recurse back here */
cred->machine_account_pending = false;
/* some other parts of the system will key off this */
cred->machine_account = true;
- mem_ctx = talloc_named(cred, 0, "cli_credentials fetch machine password");
+ mem_ctx = talloc_named(cred, 0, "cli_credentials_set_secrets from ldb");
if (!ldb) {
/* Local secrets are stored in secrets.ldb */
- ldb = secrets_db_connect(mem_ctx, lp_ctx);
+ ldb = secrets_db_connect(mem_ctx, lp_ctx, 0);
if (!ldb) {
- /* set anonymous as the fallback, if the machine account won't work */
- cli_credentials_set_anonymous(cred);
*error_string = talloc_strdup(cred, "Could not open secrets.ldb");
talloc_free(mem_ctx);
return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
*error_string = talloc_asprintf(cred, "Could not find entry to match filter: '%s' base: '%s': %s: %s",
filter, base ? base : "",
ldb_strerror(ldb_ret), ldb_errstring(ldb));
- /* set anonymous as the fallback, if the machine account won't work */
- cli_credentials_set_anonymous(cred);
talloc_free(mem_ctx);
return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
}
password = ldb_msg_find_attr_as_string(msg, "secret", NULL);
+ whenChanged = ldb_msg_find_ldb_val(msg, "whenChanged");
+ if (!whenChanged || ldb_val_to_time(whenChanged, &lct) != LDB_SUCCESS) {
+ /* This attribute is mandatory */
+ talloc_free(mem_ctx);
+ return NT_STATUS_NOT_FOUND;
+ }
+
+ /* Don't set secrets.ldb info if the secrets.tdb entry was more recent */
+ if (lct < secrets_tdb_last_change_time) {
+ talloc_free(mem_ctx);
+ return NT_STATUS_NOT_FOUND;
+ }
+
+ if ((lct == secrets_tdb_last_change_time) &&
+ (secrets_tdb_password != NULL) &&
+ (password != NULL) &&
+ (strcmp(password, secrets_tdb_password) != 0)) {
+ talloc_free(mem_ctx);
+ return NT_STATUS_NOT_FOUND;
+ }
+
+ cli_credentials_set_password_last_changed_time(cred, lct);
+
machine_account = ldb_msg_find_attr_as_string(msg, "samAccountName", NULL);
if (!machine_account) {
machine_account = ldb_msg_find_attr_as_string(msg, "servicePrincipalName", NULL);
-
+
if (!machine_account) {
const char *ldap_bind_dn = ldb_msg_find_attr_as_string(msg, "ldapBindDn", NULL);
if (!ldap_bind_dn) {
- *error_string = talloc_asprintf(cred,
+ *error_string = talloc_asprintf(cred,
"Could not find 'samAccountName', "
"'servicePrincipalName' or "
"'ldapBindDn' in secrets record: %s",
ldb_dn_get_linearized(msg->dn));
- /* set anonymous as the fallback, if the machine account won't work */
- cli_credentials_set_anonymous(cred);
talloc_free(mem_ctx);
return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
} else {
salt_principal = ldb_msg_find_attr_as_string(msg, "saltPrincipal", NULL);
cli_credentials_set_salt_principal(cred, salt_principal);
-
+
sct = ldb_msg_find_attr_as_int(msg, "secureChannelType", 0);
- if (sct) {
+ if (sct) {
cli_credentials_set_secure_channel_type(cred, sct);
}
-
+
if (!password) {
const struct ldb_val *nt_password_hash = ldb_msg_find_ldb_val(msg, "unicodePwd");
struct samr_Password hash;
ZERO_STRUCT(hash);
if (nt_password_hash) {
- memcpy(hash.hash, nt_password_hash->data,
+ memcpy(hash.hash, nt_password_hash->data,
MIN(nt_password_hash->length, sizeof(hash.hash)));
-
+
cli_credentials_set_nt_hash(cred, &hash, CRED_SPECIFIED);
} else {
cli_credentials_set_password(cred, NULL, CRED_SPECIFIED);
cli_credentials_set_password(cred, password, CRED_SPECIFIED);
}
-
domain = ldb_msg_find_attr_as_string(msg, "flatname", NULL);
if (domain) {
cli_credentials_set_domain(cred, domain, CRED_SPECIFIED);
cli_credentials_set_kvno(cred, ldb_msg_find_attr_as_int(msg, "msDS-KeyVersionNumber", 0));
- whenChanged = ldb_msg_find_ldb_val(msg, "whenChanged");
- if (whenChanged) {
- time_t lct;
- if (ldb_val_to_time(whenChanged, &lct) == LDB_SUCCESS) {
- cli_credentials_set_password_last_changed_time(cred, lct);
- }
- }
-
/* If there was an external keytab specified by reference in
* the LDB, then use this. Otherwise we will make one up
* (chewing CPU time) from the password */
talloc_free(keytab);
}
talloc_free(mem_ctx);
-
+
return NT_STATUS_OK;
}
+
+/**
+ * Fill in credentials for the machine trust account, from the secrets database.
+ *
+ * @param cred Credentials structure to fill in
+ * @retval NTSTATUS error detailing any failure
+ */
+_PUBLIC_ NTSTATUS cli_credentials_set_secrets(struct cli_credentials *cred,
+ struct loadparm_context *lp_ctx,
+ struct ldb_context *ldb,
+ const char *base,
+ const char *filter,
+ char **error_string)
+{
+ NTSTATUS status = cli_credentials_set_secrets_lct(cred, lp_ctx, ldb, base, filter, 0, NULL, error_string);
+ if (!NT_STATUS_IS_OK(status)) {
+ /* set anonymous as the fallback, if the machine account won't work */
+ cli_credentials_set_anonymous(cred);
+ }
+ return status;
+}
+
/**
* Fill in credentials for the machine trust account, from the secrets database.
- *
+ *
* @param cred Credentials structure to fill in
* @retval NTSTATUS error detailing any failure
*/
_PUBLIC_ NTSTATUS cli_credentials_set_machine_account(struct cli_credentials *cred,
struct loadparm_context *lp_ctx)
+{
+ struct db_context *db_ctx;
+ char *secrets_tdb_path;
+ int hash_size, tdb_flags;
+
+ secrets_tdb_path = lpcfg_private_db_path(cred, lp_ctx, "secrets");
+ if (secrets_tdb_path == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ hash_size = lpcfg_tdb_hash_size(lp_ctx, secrets_tdb_path);
+ tdb_flags = lpcfg_tdb_flags(lp_ctx, TDB_DEFAULT);
+
+ db_ctx = dbwrap_local_open(
+ cred,
+ secrets_tdb_path,
+ hash_size,
+ tdb_flags,
+ O_RDWR,
+ 0600,
+ DBWRAP_LOCK_ORDER_1,
+ DBWRAP_FLAG_NONE);
+ TALLOC_FREE(secrets_tdb_path);
+
+ /*
+ * We do not check for errors here, we might not have a
+ * secrets.tdb at all, and so we just need to check the
+ * secrets.ldb
+ */
+ return cli_credentials_set_machine_account_db_ctx(cred, lp_ctx, db_ctx);
+}
+
+/**
+ * Fill in credentials for the machine trust account, from the
+ * secrets.ldb or passed in handle to secrets.tdb (perhaps in CTDB).
+ *
+ * This version is used in parts of the code that can link in the
+ * CTDB dbwrap backend, by passing down the already open handle.
+ *
+ * @param cred Credentials structure to fill in
+ * @param db_ctx dbwrap context for secrets.tdb
+ * @retval NTSTATUS error detailing any failure
+ */
+_PUBLIC_ NTSTATUS cli_credentials_set_machine_account_db_ctx(struct cli_credentials *cred,
+ struct loadparm_context *lp_ctx,
+ struct db_context *db_ctx)
{
NTSTATUS status;
char *filter;
- char *error_string;
+ char *error_string = NULL;
const char *domain;
+ bool secrets_tdb_password_more_recent;
+ time_t secrets_tdb_lct = 0;
+ char *secrets_tdb_password = NULL;
+ char *secrets_tdb_old_password = NULL;
+ uint32_t secrets_tdb_secure_channel_type = SEC_CHAN_NULL;
+ int server_role = lpcfg_server_role(lp_ctx);
+ int security = lpcfg_security(lp_ctx);
+ char *keystr;
+ char *keystr_upper = NULL;
+ TALLOC_CTX *tmp_ctx = talloc_named(cred, 0, "cli_credentials_set_secrets from ldb");
+ if (!tmp_ctx) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
/* Bleh, nasty recursion issues: We are setting a machine
* account here, so we don't want the 'pending' flag around
* any more */
/* We have to do this, as the fallback in
* cli_credentials_set_secrets is to run as anonymous, so the domain is wiped */
domain = cli_credentials_get_domain(cred);
+
+ if (db_ctx) {
+ TDB_DATA dbuf;
+ keystr = talloc_asprintf(tmp_ctx, "%s/%s",
+ SECRETS_MACHINE_LAST_CHANGE_TIME,
+ domain);
+ keystr_upper = strupper_talloc(tmp_ctx, keystr);
+ status = dbwrap_fetch(db_ctx, tmp_ctx, string_tdb_data(keystr_upper),
+ &dbuf);
+ if (NT_STATUS_IS_OK(status) && dbuf.dsize == 4) {
+ secrets_tdb_lct = IVAL(dbuf.dptr,0);
+ }
+
+ keystr = talloc_asprintf(tmp_ctx, "%s/%s",
+ SECRETS_MACHINE_PASSWORD,
+ domain);
+ keystr_upper = strupper_talloc(tmp_ctx, keystr);
+ status = dbwrap_fetch(db_ctx, tmp_ctx, string_tdb_data(keystr_upper),
+ &dbuf);
+ if (NT_STATUS_IS_OK(status)) {
+ secrets_tdb_password = (char *)dbuf.dptr;
+ }
+
+ keystr = talloc_asprintf(tmp_ctx, "%s/%s",
+ SECRETS_MACHINE_PASSWORD_PREV,
+ domain);
+ keystr_upper = strupper_talloc(tmp_ctx, keystr);
+ status = dbwrap_fetch(db_ctx, tmp_ctx, string_tdb_data(keystr_upper),
+ &dbuf);
+ if (NT_STATUS_IS_OK(status)) {
+ secrets_tdb_old_password = (char *)dbuf.dptr;
+ }
+
+ keystr = talloc_asprintf(tmp_ctx, "%s/%s",
+ SECRETS_MACHINE_SEC_CHANNEL_TYPE,
+ domain);
+ keystr_upper = strupper_talloc(tmp_ctx, keystr);
+ status = dbwrap_fetch(db_ctx, tmp_ctx, string_tdb_data(keystr_upper),
+ &dbuf);
+ if (NT_STATUS_IS_OK(status) && dbuf.dsize == 4) {
+ secrets_tdb_secure_channel_type = IVAL(dbuf.dptr,0);
+ }
+ }
+
filter = talloc_asprintf(cred, SECRETS_PRIMARY_DOMAIN_FILTER,
domain);
- status = cli_credentials_set_secrets(cred, lp_ctx, NULL,
- SECRETS_PRIMARY_DOMAIN_DN,
- filter, &error_string);
- if (NT_STATUS_EQUAL(NT_STATUS_CANT_ACCESS_DOMAIN_INFO, status)
+ status = cli_credentials_set_secrets_lct(cred, lp_ctx, NULL,
+ SECRETS_PRIMARY_DOMAIN_DN,
+ filter, secrets_tdb_lct, secrets_tdb_password, &error_string);
+ if (secrets_tdb_password == NULL) {
+ secrets_tdb_password_more_recent = false;
+ } else if (NT_STATUS_EQUAL(NT_STATUS_CANT_ACCESS_DOMAIN_INFO, status)
|| NT_STATUS_EQUAL(NT_STATUS_NOT_FOUND, status)) {
- TDB_DATA dbuf;
- char *secrets_tdb = lpcfg_private_path(cred, lp_ctx, "secrets.tdb");
- struct db_context *db_ctx = dbwrap_local_open(cred, lp_ctx, secrets_tdb, 0,
- TDB_DEFAULT, O_RDWR, 0600,
- DBWRAP_LOCK_ORDER_1);
+ secrets_tdb_password_more_recent = true;
+ } else if (secrets_tdb_lct > cli_credentials_get_password_last_changed_time(cred)) {
+ secrets_tdb_password_more_recent = true;
+ } else if (secrets_tdb_lct == cli_credentials_get_password_last_changed_time(cred)) {
+ secrets_tdb_password_more_recent = strcmp(secrets_tdb_password, cli_credentials_get_password(cred)) != 0;
+ } else {
+ secrets_tdb_password_more_recent = false;
+ }
+
+ if (secrets_tdb_password_more_recent) {
+ enum credentials_use_kerberos use_kerberos = CRED_DONT_USE_KERBEROS;
+ char *machine_account = talloc_asprintf(tmp_ctx, "%s$", lpcfg_netbios_name(lp_ctx));
+ cli_credentials_set_password(cred, secrets_tdb_password, CRED_SPECIFIED);
+ cli_credentials_set_old_password(cred, secrets_tdb_old_password, CRED_SPECIFIED);
+ cli_credentials_set_domain(cred, domain, CRED_SPECIFIED);
+ if (strequal(domain, lpcfg_workgroup(lp_ctx))) {
+ cli_credentials_set_realm(cred, lpcfg_realm(lp_ctx), CRED_SPECIFIED);
+
+ switch (server_role) {
+ case ROLE_DOMAIN_MEMBER:
+ if (security != SEC_ADS) {
+ break;
+ }
+
+ FALL_THROUGH;
+ case ROLE_ACTIVE_DIRECTORY_DC:
+ use_kerberos = CRED_AUTO_USE_KERBEROS;
+ break;
+ }
+ }
+ cli_credentials_set_kerberos_state(cred, use_kerberos);
+ cli_credentials_set_username(cred, machine_account, CRED_SPECIFIED);
+ cli_credentials_set_password_last_changed_time(cred, secrets_tdb_lct);
+ cli_credentials_set_secure_channel_type(cred, secrets_tdb_secure_channel_type);
+ status = NT_STATUS_OK;
+ } else if (!NT_STATUS_IS_OK(status)) {
if (db_ctx) {
- char *keystr;
- char *keystr_upper;
- keystr = talloc_asprintf(cred, "%s/%s",
- SECRETS_MACHINE_PASSWORD,
- domain);
- keystr_upper = strupper_talloc(cred, keystr);
- TALLOC_FREE(keystr);
- status = dbwrap_fetch(db_ctx, cred, string_tdb_data(keystr_upper),
- &dbuf);
-
- if (NT_STATUS_IS_OK(status)) {
- char *machine_account = talloc_asprintf(cred, "%s$", lpcfg_netbios_name(lp_ctx));
- cli_credentials_set_password(cred, (const char *)dbuf.dptr, CRED_SPECIFIED);
- cli_credentials_set_domain(cred, domain, CRED_SPECIFIED);
- cli_credentials_set_username(cred, machine_account, CRED_SPECIFIED);
- TALLOC_FREE(machine_account);
- TALLOC_FREE(dbuf.dptr);
- } else {
- error_string = talloc_asprintf(cred,
- "Failed to fetch machine account password from "
- "secrets.ldb: %s and failed to fetch %s from %s",
- error_string, keystr_upper, secrets_tdb);
+ error_string
+ = talloc_asprintf(cred,
+ "Failed to fetch machine account password for %s from both "
+ "secrets.ldb (%s) and from %s",
+ domain,
+ error_string == NULL ? "error" : error_string,
+ dbwrap_name(db_ctx));
+ } else {
+ char *secrets_tdb_path;
+
+ secrets_tdb_path = lpcfg_private_db_path(tmp_ctx,
+ lp_ctx,
+ "secrets");
+ if (secrets_tdb_path == NULL) {
+ return NT_STATUS_NO_MEMORY;
}
- TALLOC_FREE(keystr_upper);
- TALLOC_FREE(secrets_tdb);
+
+ error_string = talloc_asprintf(cred,
+ "Failed to fetch machine account password from "
+ "secrets.ldb: %s and failed to open %s",
+ error_string == NULL ? "error" : error_string,
+ secrets_tdb_path);
}
+ DEBUG(1, ("Could not find machine account in secrets database: %s: %s\n",
+ error_string == NULL ? "error" : error_string,
+ nt_errstr(status)));
+ /* set anonymous as the fallback, if the machine account won't work */
+ cli_credentials_set_anonymous(cred);
}
-
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(1, ("Could not find machine account in secrets database: %s: %s\n",
- error_string, nt_errstr(status)));
- talloc_free(error_string);
- }
- return status;
-}
-/**
- * Fill in credentials for the machine trust account, from the secrets database.
- *
- * @param cred Credentials structure to fill in
- * @retval NTSTATUS error detailing any failure
- */
-NTSTATUS cli_credentials_set_krbtgt(struct cli_credentials *cred,
- struct loadparm_context *lp_ctx)
-{
- NTSTATUS status;
- char *filter;
- char *error_string;
- /* Bleh, nasty recursion issues: We are setting a machine
- * account here, so we don't want the 'pending' flag around
- * any more */
- cred->machine_account_pending = false;
- filter = talloc_asprintf(cred, SECRETS_KRBTGT_SEARCH,
- cli_credentials_get_realm(cred),
- cli_credentials_get_domain(cred));
- status = cli_credentials_set_secrets(cred, lp_ctx, NULL,
- SECRETS_PRINCIPALS_DN,
- filter, &error_string);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(1, ("Could not find krbtgt (master Kerberos) account in secrets database: %s: %s\n", nt_errstr(status), error_string));
- talloc_free(error_string);
- }
+ TALLOC_FREE(tmp_ctx);
return status;
}
/**
- * Fill in credentials for a particular prinicpal, from the secrets database.
- *
+ * Fill in credentials for a particular principal, from the secrets database.
+ *
* @param cred Credentials structure to fill in
* @retval NTSTATUS error detailing any failure
*/
{
NTSTATUS status;
char *filter;
- char *error_string;
+ char *error_string = NULL;
/* Bleh, nasty recursion issues: We are setting a machine
* account here, so we don't want the 'pending' flag around
* any more */
cli_credentials_get_realm(cred),
cli_credentials_get_domain(cred),
serviceprincipal);
- status = cli_credentials_set_secrets(cred, lp_ctx, NULL,
+ status = cli_credentials_set_secrets_lct(cred, lp_ctx, NULL,
SECRETS_PRINCIPALS_DN, filter,
- &error_string);
+ 0, NULL, &error_string);
if (!NT_STATUS_IS_OK(status)) {
- DEBUG(1, ("Could not find %s principal in secrets database: %s: %s\n", serviceprincipal, nt_errstr(status), error_string));
+ DEBUG(1, ("Could not find %s principal in secrets database: %s: %s\n",
+ serviceprincipal, nt_errstr(status),
+ error_string ? error_string : "<no error>"));
}
return status;
}
/**
* Ask that when required, the credentials system will be filled with
* machine trust account, from the secrets database.
- *
+ *
* @param cred Credentials structure to fill in
- * @note This function is used to call the above function after, rather
+ * @note This function is used to call the above function after, rather
* than during, popt processing.
*
*/
git.samba.org / metze / samba / wip.git / blobdiff