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, 245 insertions, 0 deletions

diff --git a/auth/ntlmssp/gensec_ntlmssp_server.c b/auth/ntlmssp/gensec_ntlmssp_server.c
new file mode 100644
index 0000000..ab92f4d
--- /dev/null
+++ b/auth/ntlmssp/gensec_ntlmssp_server.c
@@ -0,0 +1,245 @@
+/*
+   Unix SMB/Netbios implementation.
+   Version 3.0
+   handle NLTMSSP, client server side parsing
+
+   Copyright (C) Andrew Tridgell      2001
+   Copyright (C) Andrew Bartlett <abartlet@samba.org> 2001-2005
+   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 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 "system/network.h"
+#include "lib/tsocket/tsocket.h"
+#include "auth/ntlmssp/ntlmssp.h"
+#include "../librpc/gen_ndr/ndr_ntlmssp.h"
+#include "auth/ntlmssp/ntlmssp_ndr.h"
+#include "auth/ntlmssp/ntlmssp_private.h"
+#include "../libcli/auth/libcli_auth.h"
+#include "../lib/crypto/crypto.h"
+#include "auth/gensec/gensec.h"
+#include "auth/gensec/gensec_internal.h"
+#include "auth/common_auth.h"
+#include "param/param.h"
+#include "param/loadparm.h"
+#include "libds/common/roles.h"
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_AUTH
+
+/**
+ * Return the credentials of a logged on user, including session keys
+ * etc.
+ *
+ * Only valid after a successful authentication
+ *
+ * May only be called once per authentication.
+ *
+ */
+
+NTSTATUS gensec_ntlmssp_session_info(struct gensec_security *gensec_security,
+				     TALLOC_CTX *mem_ctx,
+				     struct auth_session_info **session_info)
+{
+	NTSTATUS nt_status;
+	struct gensec_ntlmssp_context *gensec_ntlmssp =
+		talloc_get_type_abort(gensec_security->private_data,
+				      struct gensec_ntlmssp_context);
+	uint32_t session_info_flags = 0;
+
+	if (gensec_security->want_features & GENSEC_FEATURE_UNIX_TOKEN) {
+		session_info_flags |= AUTH_SESSION_INFO_UNIX_TOKEN;
+	}
+
+	session_info_flags |= AUTH_SESSION_INFO_DEFAULT_GROUPS;
+	session_info_flags |= AUTH_SESSION_INFO_NTLM;
+
+	if (gensec_security->auth_context && gensec_security->auth_context->generate_session_info) {
+		nt_status = gensec_security->auth_context->generate_session_info(gensec_security->auth_context, mem_ctx, 
+										 gensec_ntlmssp->server_returned_info,
+										 gensec_ntlmssp->ntlmssp_state->user,
+										 session_info_flags,
+										 session_info);
+	} else {
+		DEBUG(0, ("Cannot generate a session_info without the auth_context\n"));
+		return NT_STATUS_INTERNAL_ERROR;
+	}
+
+	NT_STATUS_NOT_OK_RETURN(nt_status);
+
+	nt_status = gensec_ntlmssp_session_key(gensec_security, *session_info,
+					       &(*session_info)->session_key);
+	if (NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_USER_SESSION_KEY)) {
+		(*session_info)->session_key = data_blob_null;
+		nt_status = NT_STATUS_OK;
+	}
+
+	return nt_status;
+}
+
+/**
+ * Start NTLMSSP on the server side
+ *
+ */
+NTSTATUS gensec_ntlmssp_server_start(struct gensec_security *gensec_security)
+{
+	NTSTATUS nt_status;
+	struct ntlmssp_state *ntlmssp_state;
+	struct gensec_ntlmssp_context *gensec_ntlmssp;
+	const char *netbios_name;
+	const char *netbios_domain;
+	const char *dns_name;
+	const char *dns_domain;
+	enum server_role role;
+
+	role = lpcfg_server_role(gensec_security->settings->lp_ctx);
+
+	nt_status = gensec_ntlmssp_start(gensec_security);
+	NT_STATUS_NOT_OK_RETURN(nt_status);
+
+	gensec_ntlmssp =
+		talloc_get_type_abort(gensec_security->private_data,
+				      struct gensec_ntlmssp_context);
+
+	ntlmssp_state = talloc_zero(gensec_ntlmssp,
+				    struct ntlmssp_state);
+	if (!ntlmssp_state) {
+		return NT_STATUS_NO_MEMORY;
+	}
+	gensec_ntlmssp->ntlmssp_state = ntlmssp_state;
+
+	ntlmssp_state->role = NTLMSSP_SERVER;
+
+	ntlmssp_state->expected_state = NTLMSSP_NEGOTIATE;
+
+	ntlmssp_state->allow_lm_response =
+		lpcfg_lanman_auth(gensec_security->settings->lp_ctx);
+
+	if (ntlmssp_state->allow_lm_response &&
+	    gensec_setting_bool(gensec_security->settings,
+				"ntlmssp_server", "allow_lm_key", false))
+	{
+		ntlmssp_state->allow_lm_key = true;
+	}
+
+	ntlmssp_state->force_old_spnego = false;
+
+	if (gensec_setting_bool(gensec_security->settings, "ntlmssp_server", "force_old_spnego", false)) {
+		/*
+		 * For testing Windows 2000 mode
+		 */
+		ntlmssp_state->force_old_spnego = true;
+	}
+
+	ntlmssp_state->neg_flags =
+		NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_VERSION;
+
+	if (gensec_setting_bool(gensec_security->settings, "ntlmssp_server", "128bit", true)) {
+		ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_128;
+	}
+
+	if (gensec_setting_bool(gensec_security->settings, "ntlmssp_server", "56bit", true)) {
+		ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_56;
+	}
+
+	if (gensec_setting_bool(gensec_security->settings, "ntlmssp_server", "keyexchange", true)) {
+		ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_KEY_EXCH;
+	}
+
+	if (gensec_setting_bool(gensec_security->settings, "ntlmssp_server", "alwayssign", true)) {
+		ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_ALWAYS_SIGN;
+	}
+
+	if (gensec_setting_bool(gensec_security->settings, "ntlmssp_server", "ntlm2", true)) {
+		ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_NTLM2;
+	}
+
+	if (ntlmssp_state->allow_lm_key) {
+		ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_LM_KEY;
+	}
+
+	/*
+	 * We always allow NTLMSSP_NEGOTIATE_SIGN and NTLMSSP_NEGOTIATE_SEAL.
+	 *
+	 * These will be removed if the client doesn't want them.
+	 */
+	ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
+	ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SEAL;
+
+
+	if (role == ROLE_STANDALONE) {
+		ntlmssp_state->server.is_standalone = true;
+	} else {
+		ntlmssp_state->server.is_standalone = false;
+	}
+
+	if (gensec_security->settings->server_netbios_name) {
+		netbios_name = gensec_security->settings->server_netbios_name;
+	} else {
+		netbios_name = lpcfg_netbios_name(gensec_security->settings->lp_ctx);
+	}
+
+	if (gensec_security->settings->server_netbios_domain) {
+		netbios_domain = gensec_security->settings->server_netbios_domain;
+	} else {
+		netbios_domain = lpcfg_workgroup(gensec_security->settings->lp_ctx);
+	}
+
+	if (gensec_security->settings->server_dns_name) {
+		dns_name = gensec_security->settings->server_dns_name;
+	} else {
+		const char *dnsdomain = lpcfg_dnsdomain(gensec_security->settings->lp_ctx);
+		char *lower_netbiosname;
+
+		lower_netbiosname = strlower_talloc(ntlmssp_state, netbios_name);
+		NT_STATUS_HAVE_NO_MEMORY(lower_netbiosname);
+
+		/* Find out the DNS host name */
+		if (dnsdomain && dnsdomain[0] != '\0') {
+			dns_name = talloc_asprintf(ntlmssp_state, "%s.%s",
+						   lower_netbiosname,
+						   dnsdomain);
+			talloc_free(lower_netbiosname);
+			NT_STATUS_HAVE_NO_MEMORY(dns_name);
+		} else {
+			dns_name = lower_netbiosname;
+		}
+	}
+
+	if (gensec_security->settings->server_dns_domain) {
+		dns_domain = gensec_security->settings->server_dns_domain;
+	} else {
+		dns_domain = lpcfg_dnsdomain(gensec_security->settings->lp_ctx);
+	}
+
+	ntlmssp_state->server.netbios_name = talloc_strdup(ntlmssp_state, netbios_name);
+	NT_STATUS_HAVE_NO_MEMORY(ntlmssp_state->server.netbios_name);
+
+	ntlmssp_state->server.netbios_domain = talloc_strdup(ntlmssp_state, netbios_domain);
+	NT_STATUS_HAVE_NO_MEMORY(ntlmssp_state->server.netbios_domain);
+
+	ntlmssp_state->server.dns_name = talloc_strdup(ntlmssp_state, dns_name);
+	NT_STATUS_HAVE_NO_MEMORY(ntlmssp_state->server.dns_name);
+
+	ntlmssp_state->server.dns_domain = talloc_strdup(ntlmssp_state, dns_domain);
+	NT_STATUS_HAVE_NO_MEMORY(ntlmssp_state->server.dns_domain);
+
+	ntlmssp_state->neg_flags |= ntlmssp_state->required_flags;
+	ntlmssp_state->conf_flags = ntlmssp_state->neg_flags;
+
+	return NT_STATUS_OK;
+}
+