Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 236 insertions, 0 deletions

diff --git a/source3/libads/util.c b/source3/libads/util.c
new file mode 100644
index 0000000..a1e33fd
--- /dev/null
+++ b/source3/libads/util.c
@@ -0,0 +1,236 @@
+/*
+   Unix SMB/CIFS implementation.
+   krb5 set password implementation
+   Copyright (C) Remus Koos 2001 (remuskoos@yahoo.com)
+
+   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 "includes.h"
+#include "ads.h"
+#include "secrets.h"
+#include "librpc/gen_ndr/ndr_secrets.h"
+
+#ifdef HAVE_KRB5
+ADS_STATUS ads_change_trust_account_password(ADS_STRUCT *ads, char *host_principal)
+{
+	const char *password = NULL;
+	const char *new_password = NULL;
+	ADS_STATUS ret;
+	const char *domain = lp_workgroup();
+	struct secrets_domain_info1 *info = NULL;
+	struct secrets_domain_info1_change *prev = NULL;
+	const DATA_BLOB *cleartext_blob = NULL;
+	DATA_BLOB pw_blob = data_blob_null;
+	DATA_BLOB new_pw_blob = data_blob_null;
+	NTSTATUS status;
+	struct timeval tv = timeval_current();
+	NTTIME now = timeval_to_nttime(&tv);
+	int role = lp_server_role();
+	bool ok;
+
+	if (role != ROLE_DOMAIN_MEMBER) {
+		DBG_ERR("Machine account password change only supported on a DOMAIN_MEMBER.\n");
+		return ADS_ERROR_NT(NT_STATUS_INVALID_SERVER_STATE);
+	}
+
+	new_password = trust_pw_new_value(talloc_tos(), SEC_CHAN_WKSTA, SEC_ADS);
+	if (new_password == NULL) {
+		ret = ADS_ERROR_SYSTEM(errno);
+		DEBUG(1,("Failed to generate machine password\n"));
+		return ret;
+	}
+
+	status = secrets_prepare_password_change(domain,
+						 ads->auth.kdc_server,
+						 new_password,
+						 talloc_tos(),
+						 &info, &prev);
+	if (!NT_STATUS_IS_OK(status)) {
+		return ADS_ERROR_NT(status);
+	}
+	if (prev != NULL) {
+		status = NT_STATUS_REQUEST_NOT_ACCEPTED;
+		secrets_failed_password_change("localhost",
+					       status,
+					       NT_STATUS_NOT_COMMITTED,
+					       info);
+		return ADS_ERROR_NT(status);
+	}
+
+	cleartext_blob = &info->password->cleartext_blob;
+	ok = convert_string_talloc(talloc_tos(), CH_UTF16MUNGED, CH_UNIX,
+				   cleartext_blob->data,
+				   cleartext_blob->length,
+				   (void **)&pw_blob.data,
+				   &pw_blob.length);
+	if (!ok) {
+		status = NT_STATUS_UNMAPPABLE_CHARACTER;
+		if (errno == ENOMEM) {
+			status = NT_STATUS_NO_MEMORY;
+		}
+		DBG_ERR("convert_string_talloc(CH_UTF16MUNGED, CH_UNIX) "
+			"failed for password of %s - %s\n",
+			domain, nt_errstr(status));
+		return ADS_ERROR_NT(status);
+	}
+	password = (const char *)pw_blob.data;
+
+	cleartext_blob = &info->next_change->password->cleartext_blob;
+	ok = convert_string_talloc(talloc_tos(), CH_UTF16MUNGED, CH_UNIX,
+				   cleartext_blob->data,
+				   cleartext_blob->length,
+				   (void **)&new_pw_blob.data,
+				   &new_pw_blob.length);
+	if (!ok) {
+		status = NT_STATUS_UNMAPPABLE_CHARACTER;
+		if (errno == ENOMEM) {
+			status = NT_STATUS_NO_MEMORY;
+		}
+		DBG_ERR("convert_string_talloc(CH_UTF16MUNGED, CH_UNIX) "
+			"failed for new_password of %s - %s\n",
+			domain, nt_errstr(status));
+		secrets_failed_password_change("localhost",
+					       status,
+					       NT_STATUS_NOT_COMMITTED,
+					       info);
+		return ADS_ERROR_NT(status);
+	}
+	talloc_keep_secret(new_pw_blob.data);
+	new_password = (const char *)new_pw_blob.data;
+
+	ret = kerberos_set_password(ads->auth.kdc_server, host_principal, password, host_principal, new_password, ads->auth.time_offset);
+
+	if (!ADS_ERR_OK(ret)) {
+		status = ads_ntstatus(ret);
+		DBG_ERR("kerberos_set_password(%s, %s) "
+			"failed for new_password of %s - %s\n",
+			ads->auth.kdc_server, host_principal,
+			domain, nt_errstr(status));
+		secrets_failed_password_change(ads->auth.kdc_server,
+					       NT_STATUS_NOT_COMMITTED,
+					       status,
+					       info);
+		return ret;
+	}
+
+	status = secrets_finish_password_change(ads->auth.kdc_server, now, info);
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(1,("Failed to save machine password\n"));
+		return ADS_ERROR_NT(status);
+	}
+
+	return ADS_SUCCESS;
+}
+#endif
+
+/**
+* @brief Parses windows style SPN service/host:port/servicename
+*      serviceclass - A string that identifies the general class of service
+*            e.g. 'http'
+*      host - A netbios name or fully-qualified DNS name
+*      port - An optional TCP or UDP port number
+*      servicename - An optional distinguished name, GUID, DNS name or
+*                    DNS name of an SRV or MX record. (not needed for host
+*                    based services)
+*
+* @param[in]  ctx 	- Talloc context.
+* @param[in]  srvprinc  - The service principal
+*
+* @return 		- struct spn_struct containing the fields parsed or NULL
+*			  if srvprinc could not be parsed.
+*/
+struct spn_struct *parse_spn(TALLOC_CTX *ctx, const char *srvprinc)
+{
+	struct spn_struct * result = NULL;
+	char *tmp = NULL;
+	char *port_str = NULL;
+	char *host_str = NULL;
+
+	result = talloc_zero(ctx, struct spn_struct);
+	if (result == NULL) {
+		DBG_ERR("Out of memory\n");
+		return NULL;
+	}
+
+	result->serviceclass = talloc_strdup(result, srvprinc);
+	if (result->serviceclass == NULL) {
+		DBG_ERR("Out of memory\n");
+		goto fail;
+	}
+	result->port = -1;
+
+	tmp = strchr_m(result->serviceclass, '/');
+	if (tmp == NULL) {
+		/* illegal */
+		DBG_ERR("Failed to parse spn %s, no host definition\n",
+			srvprinc);
+		goto fail;
+	}
+
+	/* terminate service principal */
+	*tmp = '\0';
+	tmp++;
+	host_str = tmp;
+
+	tmp = strchr_m(host_str, ':');
+	if (tmp != NULL) {
+		*tmp  = '\0';
+		tmp++;
+		port_str = tmp;
+	} else {
+		tmp = host_str;
+	}
+
+	tmp = strchr_m(tmp, '/');
+	if (tmp != NULL) {
+		*tmp  = '\0';
+		tmp++;
+		result->servicename = tmp;
+	}
+
+	if (strlen(host_str) == 0) {
+		/* illegal */
+		DBG_ERR("Failed to parse spn %s, illegal host definition\n",
+			srvprinc);
+		goto fail;
+	}
+	result->host = host_str;
+
+	if (result->servicename != NULL && (strlen(result->servicename) == 0)) {
+		DBG_ERR("Failed to parse spn %s, empty servicename "
+			"definition\n", srvprinc);
+		goto fail;
+	}
+	if (port_str != NULL) {
+		if (strlen(port_str) == 0) {
+			DBG_ERR("Failed to parse spn %s, empty port "
+				"definition\n", srvprinc);
+			goto fail;
+		}
+		result->port = (int32_t)strtol(port_str, NULL, 10);
+		if (result->port <= 0
+		    || result->port > 65535
+		    || errno == ERANGE) {
+			DBG_ERR("Failed to parse spn %s, port number "
+				"conversion failed\n", srvprinc);
+			errno = 0;
+			goto fail;
+		}
+	}
+	return result;
+fail:
+	TALLOC_FREE(result);
+	return NULL;
+}