2
Unix SMB/Netbios implementation.
4
handle NLTMSSP, client server side parsing
6
Copyright (C) Andrew Tridgell 2001
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Copyright (C) Andrew Bartlett <abartlet@samba.org> 2001-2005
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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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#include "system/network.h"
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#include "auth/ntlmssp/ntlmssp.h"
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#include "auth/ntlmssp/msrpc_parse.h"
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#include "../lib/crypto/crypto.h"
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#include "libcli/auth/libcli_auth.h"
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#include "auth/credentials/credentials.h"
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#include "auth/gensec/gensec.h"
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#include "auth/auth.h"
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#include "auth/ntlm/auth_proto.h"
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#include "param/param.h"
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#include "auth/session_proto.h"
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* Set a username on an NTLMSSP context - ensures it is talloc()ed
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static NTSTATUS ntlmssp_set_username(struct gensec_ntlmssp_state *gensec_ntlmssp_state, const char *user)
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/* it should be at least "" */
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DEBUG(1, ("NTLMSSP failed to set username - cannot accept NULL username\n"));
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return NT_STATUS_INVALID_PARAMETER;
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gensec_ntlmssp_state->user = talloc_strdup(gensec_ntlmssp_state, user);
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if (!gensec_ntlmssp_state->user) {
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return NT_STATUS_NO_MEMORY;
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* Set a domain on an NTLMSSP context - ensures it is talloc()ed
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static NTSTATUS ntlmssp_set_domain(struct gensec_ntlmssp_state *gensec_ntlmssp_state, const char *domain)
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gensec_ntlmssp_state->domain = talloc_strdup(gensec_ntlmssp_state, domain);
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if (!gensec_ntlmssp_state->domain) {
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return NT_STATUS_NO_MEMORY;
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* Set a workstation on an NTLMSSP context - ensures it is talloc()ed
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static NTSTATUS ntlmssp_set_workstation(struct gensec_ntlmssp_state *gensec_ntlmssp_state, const char *workstation)
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gensec_ntlmssp_state->workstation = talloc_strdup(gensec_ntlmssp_state, workstation);
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if (!gensec_ntlmssp_state->workstation) {
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return NT_STATUS_NO_MEMORY;
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* Determine correct target name flags for reply, given server role
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* and negotiated flags
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* @param gensec_ntlmssp_state NTLMSSP State
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* @param neg_flags The flags from the packet
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* @param chal_flags The flags to be set in the reply packet
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* @return The 'target name' string.
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static const char *ntlmssp_target_name(struct gensec_ntlmssp_state *gensec_ntlmssp_state,
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uint32_t neg_flags, uint32_t *chal_flags)
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if (neg_flags & NTLMSSP_REQUEST_TARGET) {
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*chal_flags |= NTLMSSP_CHAL_TARGET_INFO;
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*chal_flags |= NTLMSSP_REQUEST_TARGET;
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if (gensec_ntlmssp_state->server_role == ROLE_STANDALONE) {
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*chal_flags |= NTLMSSP_TARGET_TYPE_SERVER;
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return gensec_ntlmssp_state->server_name;
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*chal_flags |= NTLMSSP_TARGET_TYPE_DOMAIN;
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return gensec_ntlmssp_state->domain;
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* Next state function for the Negotiate packet
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* @param gensec_security GENSEC state
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* @param out_mem_ctx Memory context for *out
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* @param in The request, as a DATA_BLOB. reply.data must be NULL
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* @param out The reply, as an allocated DATA_BLOB, caller to free.
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* @return Errors or MORE_PROCESSING_REQUIRED if (normal) a reply is required.
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NTSTATUS ntlmssp_server_negotiate(struct gensec_security *gensec_security,
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TALLOC_CTX *out_mem_ctx,
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const DATA_BLOB in, DATA_BLOB *out)
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struct gensec_ntlmssp_state *gensec_ntlmssp_state = (struct gensec_ntlmssp_state *)gensec_security->private_data;
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DATA_BLOB struct_blob;
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uint32_t neg_flags = 0;
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uint32_t ntlmssp_command, chal_flags;
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const uint8_t *cryptkey;
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const char *target_name;
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/* parse the NTLMSSP packet */
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file_save("ntlmssp_negotiate.dat", request.data, request.length);
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if ((in.length < 16) || !msrpc_parse(out_mem_ctx,
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DEBUG(1, ("ntlmssp_server_negotiate: failed to parse "
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"NTLMSSP Negotiate of length %u:\n",
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(unsigned int)in.length ));
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dump_data(2, in.data, in.length);
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return NT_STATUS_INVALID_PARAMETER;
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debug_ntlmssp_flags(neg_flags);
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ntlmssp_handle_neg_flags(gensec_ntlmssp_state, neg_flags, gensec_ntlmssp_state->allow_lm_key);
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/* Ask our caller what challenge they would like in the packet */
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cryptkey = gensec_ntlmssp_state->get_challenge(gensec_ntlmssp_state);
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DEBUG(1, ("ntlmssp_server_negotiate: backend doesn't give a challenge\n"));
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return NT_STATUS_INTERNAL_ERROR;
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/* Check if we may set the challenge */
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if (!gensec_ntlmssp_state->may_set_challenge(gensec_ntlmssp_state)) {
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gensec_ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_NTLM2;
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/* The flags we send back are not just the negotiated flags,
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* they are also 'what is in this packet'. Therfore, we
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* operate on 'chal_flags' from here on
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chal_flags = gensec_ntlmssp_state->neg_flags;
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/* get the right name to fill in as 'target' */
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target_name = ntlmssp_target_name(gensec_ntlmssp_state,
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neg_flags, &chal_flags);
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if (target_name == NULL)
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return NT_STATUS_INVALID_PARAMETER;
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gensec_ntlmssp_state->chal = data_blob_talloc(gensec_ntlmssp_state, cryptkey, 8);
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gensec_ntlmssp_state->internal_chal = data_blob_talloc(gensec_ntlmssp_state, cryptkey, 8);
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/* This creates the 'blob' of names that appears at the end of the packet */
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if (chal_flags & NTLMSSP_CHAL_TARGET_INFO) {
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char dnsdomname[MAXHOSTNAMELEN], dnsname[MAXHOSTNAMELEN];
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const char *target_name_dns = "";
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/* Find out the DNS domain name */
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dnsdomname[0] = '\0';
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safe_strcpy(dnsdomname, lp_realm(gensec_security->settings->lp_ctx), sizeof(dnsdomname) - 1);
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strlower_m(dnsdomname);
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/* Find out the DNS host name */
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safe_strcpy(dnsname, gensec_ntlmssp_state->server_name, sizeof(dnsname) - 1);
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if (dnsdomname[0] != '\0') {
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safe_strcat(dnsname, ".", sizeof(dnsname) - 1);
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safe_strcat(dnsname, dnsdomname, sizeof(dnsname) - 1);
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if (chal_flags |= NTLMSSP_TARGET_TYPE_DOMAIN) {
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target_name_dns = dnsdomname;
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} else if (chal_flags |= NTLMSSP_TARGET_TYPE_SERVER) {
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target_name_dns = dnsname;
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msrpc_gen(out_mem_ctx,
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&struct_blob, "aaaaa",
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NTLMSSP_NAME_TYPE_DOMAIN, target_name,
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NTLMSSP_NAME_TYPE_SERVER, gensec_ntlmssp_state->server_name,
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NTLMSSP_NAME_TYPE_DOMAIN_DNS, dnsdomname,
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NTLMSSP_NAME_TYPE_SERVER_DNS, dnsname,
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struct_blob = data_blob(NULL, 0);
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/* Marshal the packet in the right format, be it unicode or ASCII */
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const char *gen_string;
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if (gensec_ntlmssp_state->unicode) {
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gen_string = "CdUdbddB";
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gen_string = "CdAdbddB";
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msrpc_gen(out_mem_ctx,
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struct_blob.data, struct_blob.length);
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gensec_ntlmssp_state->expected_state = NTLMSSP_AUTH;
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return NT_STATUS_MORE_PROCESSING_REQUIRED;
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* Next state function for the Authenticate packet
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* @param gensec_ntlmssp_state NTLMSSP State
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* @param request The request, as a DATA_BLOB
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* @return Errors or NT_STATUS_OK.
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static NTSTATUS ntlmssp_server_preauth(struct gensec_ntlmssp_state *gensec_ntlmssp_state,
252
const DATA_BLOB request)
254
uint32_t ntlmssp_command, auth_flags;
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uint8_t session_nonce_hash[16];
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const char *parse_string;
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char *workstation = NULL;
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file_save("ntlmssp_auth.dat", request.data, request.length);
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if (gensec_ntlmssp_state->unicode) {
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parse_string = "CdBBUUUBd";
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parse_string = "CdBBAAABd";
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data_blob_free(&gensec_ntlmssp_state->lm_resp);
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data_blob_free(&gensec_ntlmssp_state->nt_resp);
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data_blob_free(&gensec_ntlmssp_state->encrypted_session_key);
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gensec_ntlmssp_state->user = NULL;
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gensec_ntlmssp_state->domain = NULL;
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gensec_ntlmssp_state->workstation = NULL;
283
/* now the NTLMSSP encoded auth hashes */
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if (!msrpc_parse(gensec_ntlmssp_state,
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&request, parse_string,
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&gensec_ntlmssp_state->lm_resp,
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&gensec_ntlmssp_state->nt_resp,
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&gensec_ntlmssp_state->encrypted_session_key,
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DEBUG(10, ("ntlmssp_server_auth: failed to parse NTLMSSP (nonfatal):\n"));
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dump_data(10, request.data, request.length);
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data_blob_free(&gensec_ntlmssp_state->encrypted_session_key);
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/* Try again with a shorter string (Win9X truncates this packet) */
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if (gensec_ntlmssp_state->unicode) {
304
parse_string = "CdBBUUU";
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parse_string = "CdBBAAA";
309
/* now the NTLMSSP encoded auth hashes */
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if (!msrpc_parse(gensec_ntlmssp_state,
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&request, parse_string,
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&gensec_ntlmssp_state->lm_resp,
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&gensec_ntlmssp_state->nt_resp,
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DEBUG(1, ("ntlmssp_server_auth: failed to parse NTLMSSP:\n"));
320
dump_data(2, request.data, request.length);
322
return NT_STATUS_INVALID_PARAMETER;
327
ntlmssp_handle_neg_flags(gensec_ntlmssp_state, auth_flags, gensec_ntlmssp_state->allow_lm_key);
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if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_domain(gensec_ntlmssp_state, domain))) {
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data_blob_free(&gensec_ntlmssp_state->encrypted_session_key);
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if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_username(gensec_ntlmssp_state, user))) {
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data_blob_free(&gensec_ntlmssp_state->encrypted_session_key);
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if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_workstation(gensec_ntlmssp_state, workstation))) {
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data_blob_free(&gensec_ntlmssp_state->encrypted_session_key);
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DEBUG(3,("Got user=[%s] domain=[%s] workstation=[%s] len1=%lu len2=%lu\n",
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gensec_ntlmssp_state->user, gensec_ntlmssp_state->domain, gensec_ntlmssp_state->workstation, (unsigned long)gensec_ntlmssp_state->lm_resp.length, (unsigned long)gensec_ntlmssp_state->nt_resp.length));
351
file_save("nthash1.dat", &gensec_ntlmssp_state->nt_resp.data, &gensec_ntlmssp_state->nt_resp.length);
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file_save("lmhash1.dat", &gensec_ntlmssp_state->lm_resp.data, &gensec_ntlmssp_state->lm_resp.length);
355
/* NTLM2 uses a 'challenge' that is made of up both the server challenge, and a
358
However, the NTLM2 flag may still be set for the real NTLMv2 logins, be careful.
360
if (gensec_ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_NTLM2) {
361
if (gensec_ntlmssp_state->nt_resp.length == 24 && gensec_ntlmssp_state->lm_resp.length == 24) {
362
struct MD5Context md5_session_nonce_ctx;
363
SMB_ASSERT(gensec_ntlmssp_state->internal_chal.data
364
&& gensec_ntlmssp_state->internal_chal.length == 8);
366
gensec_ntlmssp_state->doing_ntlm2 = true;
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memcpy(gensec_ntlmssp_state->crypt.ntlm2.session_nonce, gensec_ntlmssp_state->internal_chal.data, 8);
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memcpy(&gensec_ntlmssp_state->crypt.ntlm2.session_nonce[8], gensec_ntlmssp_state->lm_resp.data, 8);
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MD5Init(&md5_session_nonce_ctx);
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MD5Update(&md5_session_nonce_ctx, gensec_ntlmssp_state->crypt.ntlm2.session_nonce, 16);
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MD5Final(session_nonce_hash, &md5_session_nonce_ctx);
375
gensec_ntlmssp_state->chal = data_blob_talloc(gensec_ntlmssp_state,
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session_nonce_hash, 8);
378
/* LM response is no longer useful, zero it out */
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data_blob_free(&gensec_ntlmssp_state->lm_resp);
381
/* We changed the effective challenge - set it */
382
if (!NT_STATUS_IS_OK(nt_status =
383
gensec_ntlmssp_state->set_challenge(gensec_ntlmssp_state,
384
&gensec_ntlmssp_state->chal))) {
386
data_blob_free(&gensec_ntlmssp_state->encrypted_session_key);
390
/* LM Key is incompatible... */
391
gensec_ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_LM_KEY;
398
* Next state function for the Authenticate packet
399
* (after authentication - figures out the session keys etc)
401
* @param gensec_ntlmssp_state NTLMSSP State
402
* @return Errors or NT_STATUS_OK.
405
static NTSTATUS ntlmssp_server_postauth(struct gensec_security *gensec_security,
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DATA_BLOB *user_session_key,
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DATA_BLOB *lm_session_key)
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struct gensec_ntlmssp_state *gensec_ntlmssp_state = (struct gensec_ntlmssp_state *)gensec_security->private_data;
411
DATA_BLOB session_key = data_blob(NULL, 0);
413
if (user_session_key)
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dump_data_pw("USER session key:\n", user_session_key->data, user_session_key->length);
417
dump_data_pw("LM first-8:\n", lm_session_key->data, lm_session_key->length);
419
/* Handle the different session key derivation for NTLM2 */
420
if (gensec_ntlmssp_state->doing_ntlm2) {
421
if (user_session_key && user_session_key->data && user_session_key->length == 16) {
422
session_key = data_blob_talloc(gensec_ntlmssp_state, NULL, 16);
423
hmac_md5(user_session_key->data, gensec_ntlmssp_state->crypt.ntlm2.session_nonce,
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sizeof(gensec_ntlmssp_state->crypt.ntlm2.session_nonce), session_key.data);
425
DEBUG(10,("ntlmssp_server_auth: Created NTLM2 session key.\n"));
426
dump_data_pw("NTLM2 session key:\n", session_key.data, session_key.length);
429
DEBUG(10,("ntlmssp_server_auth: Failed to create NTLM2 session key.\n"));
430
session_key = data_blob(NULL, 0);
432
} else if ((gensec_ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_LM_KEY)
433
/* Ensure we can never get here on NTLMv2 */
434
&& (gensec_ntlmssp_state->nt_resp.length == 0 || gensec_ntlmssp_state->nt_resp.length == 24)) {
436
if (lm_session_key && lm_session_key->data && lm_session_key->length >= 8) {
437
if (gensec_ntlmssp_state->lm_resp.data && gensec_ntlmssp_state->lm_resp.length == 24) {
438
session_key = data_blob_talloc(gensec_ntlmssp_state, NULL, 16);
439
SMBsesskeygen_lm_sess_key(lm_session_key->data, gensec_ntlmssp_state->lm_resp.data,
441
DEBUG(10,("ntlmssp_server_auth: Created NTLM session key.\n"));
442
dump_data_pw("LM session key:\n", session_key.data, session_key.length);
445
/* When there is no LM response, just use zeros */
446
static const uint8_t zeros[24];
447
session_key = data_blob_talloc(gensec_ntlmssp_state, NULL, 16);
448
SMBsesskeygen_lm_sess_key(zeros, zeros,
450
DEBUG(10,("ntlmssp_server_auth: Created NTLM session key.\n"));
451
dump_data_pw("LM session key:\n", session_key.data, session_key.length);
454
/* LM Key not selected */
455
gensec_ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_LM_KEY;
457
DEBUG(10,("ntlmssp_server_auth: Failed to create NTLM session key.\n"));
458
session_key = data_blob(NULL, 0);
461
} else if (user_session_key && user_session_key->data) {
462
session_key = *user_session_key;
463
DEBUG(10,("ntlmssp_server_auth: Using unmodified nt session key.\n"));
464
dump_data_pw("unmodified session key:\n", session_key.data, session_key.length);
466
/* LM Key not selected */
467
gensec_ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_LM_KEY;
469
} else if (lm_session_key && lm_session_key->data) {
470
/* Very weird to have LM key, but no user session key, but anyway.. */
471
session_key = *lm_session_key;
472
DEBUG(10,("ntlmssp_server_auth: Using unmodified lm session key.\n"));
473
dump_data_pw("unmodified session key:\n", session_key.data, session_key.length);
475
/* LM Key not selected */
476
gensec_ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_LM_KEY;
479
DEBUG(10,("ntlmssp_server_auth: Failed to create unmodified session key.\n"));
480
session_key = data_blob(NULL, 0);
482
/* LM Key not selected */
483
gensec_ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_LM_KEY;
486
/* With KEY_EXCH, the client supplies the proposed session key,
487
but encrypts it with the long-term key */
488
if (gensec_ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCH) {
489
if (!gensec_ntlmssp_state->encrypted_session_key.data
490
|| gensec_ntlmssp_state->encrypted_session_key.length != 16) {
491
data_blob_free(&gensec_ntlmssp_state->encrypted_session_key);
492
DEBUG(1, ("Client-supplied KEY_EXCH session key was of invalid length (%u)!\n",
493
(unsigned)gensec_ntlmssp_state->encrypted_session_key.length));
494
return NT_STATUS_INVALID_PARAMETER;
495
} else if (!session_key.data || session_key.length != 16) {
496
DEBUG(5, ("server session key is invalid (len == %u), cannot do KEY_EXCH!\n",
497
(unsigned)session_key.length));
498
gensec_ntlmssp_state->session_key = session_key;
500
dump_data_pw("KEY_EXCH session key (enc):\n",
501
gensec_ntlmssp_state->encrypted_session_key.data,
502
gensec_ntlmssp_state->encrypted_session_key.length);
503
arcfour_crypt(gensec_ntlmssp_state->encrypted_session_key.data,
505
gensec_ntlmssp_state->encrypted_session_key.length);
506
gensec_ntlmssp_state->session_key = data_blob_talloc(gensec_ntlmssp_state,
507
gensec_ntlmssp_state->encrypted_session_key.data,
508
gensec_ntlmssp_state->encrypted_session_key.length);
509
dump_data_pw("KEY_EXCH session key:\n", gensec_ntlmssp_state->encrypted_session_key.data,
510
gensec_ntlmssp_state->encrypted_session_key.length);
513
gensec_ntlmssp_state->session_key = session_key;
516
/* keep the session key around on the new context */
517
talloc_steal(gensec_ntlmssp_state, session_key.data);
519
if ((gensec_security->want_features & GENSEC_FEATURE_SIGN)
520
|| (gensec_security->want_features & GENSEC_FEATURE_SEAL)) {
521
nt_status = ntlmssp_sign_init(gensec_ntlmssp_state);
523
nt_status = NT_STATUS_OK;
526
data_blob_free(&gensec_ntlmssp_state->encrypted_session_key);
528
/* allow arbitarily many authentications, but watch that this will cause a
529
memory leak, until the gensec_ntlmssp_state is shutdown
532
if (gensec_ntlmssp_state->server_multiple_authentications) {
533
gensec_ntlmssp_state->expected_state = NTLMSSP_AUTH;
535
gensec_ntlmssp_state->expected_state = NTLMSSP_DONE;
543
* Next state function for the Authenticate packet
545
* @param gensec_security GENSEC state
546
* @param out_mem_ctx Memory context for *out
547
* @param in The request, as a DATA_BLOB. reply.data must be NULL
548
* @param out The reply, as an allocated DATA_BLOB, caller to free.
549
* @return Errors or NT_STATUS_OK if authentication sucessful
552
NTSTATUS ntlmssp_server_auth(struct gensec_security *gensec_security,
553
TALLOC_CTX *out_mem_ctx,
554
const DATA_BLOB in, DATA_BLOB *out)
556
struct gensec_ntlmssp_state *gensec_ntlmssp_state = (struct gensec_ntlmssp_state *)gensec_security->private_data;
557
DATA_BLOB user_session_key = data_blob(NULL, 0);
558
DATA_BLOB lm_session_key = data_blob(NULL, 0);
561
TALLOC_CTX *mem_ctx = talloc_new(out_mem_ctx);
563
return NT_STATUS_NO_MEMORY;
566
/* zero the outbound NTLMSSP packet */
567
*out = data_blob_talloc(out_mem_ctx, NULL, 0);
569
if (!NT_STATUS_IS_OK(nt_status = ntlmssp_server_preauth(gensec_ntlmssp_state, in))) {
570
talloc_free(mem_ctx);
575
* Note we don't check here for NTLMv2 auth settings. If NTLMv2 auth
576
* is required (by "ntlm auth = no" and "lm auth = no" being set in the
577
* smb.conf file) and no NTLMv2 response was sent then the password check
578
* will fail here. JRA.
581
/* Finally, actually ask if the password is OK */
583
if (!NT_STATUS_IS_OK(nt_status = gensec_ntlmssp_state->check_password(gensec_ntlmssp_state, mem_ctx,
584
&user_session_key, &lm_session_key))) {
585
talloc_free(mem_ctx);
589
if (gensec_security->want_features
590
& (GENSEC_FEATURE_SIGN|GENSEC_FEATURE_SEAL|GENSEC_FEATURE_SESSION_KEY)) {
591
nt_status = ntlmssp_server_postauth(gensec_security, &user_session_key, &lm_session_key);
592
talloc_free(mem_ctx);
595
gensec_ntlmssp_state->session_key = data_blob(NULL, 0);
596
talloc_free(mem_ctx);
602
* Return the challenge as determined by the authentication subsystem
603
* @return an 8 byte random challenge
606
static const uint8_t *auth_ntlmssp_get_challenge(const struct gensec_ntlmssp_state *gensec_ntlmssp_state)
611
status = gensec_ntlmssp_state->auth_context->get_challenge(gensec_ntlmssp_state->auth_context, &chal);
612
if (!NT_STATUS_IS_OK(status)) {
613
DEBUG(1, ("auth_ntlmssp_get_challenge: failed to get challenge: %s\n",
622
* Some authentication methods 'fix' the challenge, so we may not be able to set it
624
* @return If the effective challenge used by the auth subsystem may be modified
626
static bool auth_ntlmssp_may_set_challenge(const struct gensec_ntlmssp_state *gensec_ntlmssp_state)
628
return gensec_ntlmssp_state->auth_context->challenge_may_be_modified(gensec_ntlmssp_state->auth_context);
632
* NTLM2 authentication modifies the effective challenge,
633
* @param challenge The new challenge value
635
static NTSTATUS auth_ntlmssp_set_challenge(struct gensec_ntlmssp_state *gensec_ntlmssp_state, DATA_BLOB *challenge)
638
struct auth_context *auth_context = gensec_ntlmssp_state->auth_context;
641
if (challenge->length != 8) {
642
return NT_STATUS_INVALID_PARAMETER;
645
chal = challenge->data;
647
nt_status = gensec_ntlmssp_state->auth_context->set_challenge(auth_context,
649
"NTLMSSP callback (NTLM2)");
655
* Check the password on an NTLMSSP login.
657
* Return the session keys used on the connection.
660
static NTSTATUS auth_ntlmssp_check_password(struct gensec_ntlmssp_state *gensec_ntlmssp_state,
662
DATA_BLOB *user_session_key, DATA_BLOB *lm_session_key)
665
struct auth_usersupplied_info *user_info = talloc(mem_ctx, struct auth_usersupplied_info);
667
return NT_STATUS_NO_MEMORY;
670
user_info->logon_parameters = MSV1_0_ALLOW_SERVER_TRUST_ACCOUNT | MSV1_0_ALLOW_WORKSTATION_TRUST_ACCOUNT;
671
user_info->flags = 0;
672
user_info->mapped_state = false;
673
user_info->client.account_name = gensec_ntlmssp_state->user;
674
user_info->client.domain_name = gensec_ntlmssp_state->domain;
675
user_info->workstation_name = gensec_ntlmssp_state->workstation;
676
user_info->remote_host = gensec_get_peer_addr(gensec_ntlmssp_state->gensec_security);
678
user_info->password_state = AUTH_PASSWORD_RESPONSE;
679
user_info->password.response.lanman = gensec_ntlmssp_state->lm_resp;
680
user_info->password.response.lanman.data = talloc_steal(user_info, gensec_ntlmssp_state->lm_resp.data);
681
user_info->password.response.nt = gensec_ntlmssp_state->nt_resp;
682
user_info->password.response.nt.data = talloc_steal(user_info, gensec_ntlmssp_state->nt_resp.data);
684
nt_status = gensec_ntlmssp_state->auth_context->check_password(gensec_ntlmssp_state->auth_context,
687
&gensec_ntlmssp_state->server_info);
688
talloc_free(user_info);
689
NT_STATUS_NOT_OK_RETURN(nt_status);
691
talloc_steal(gensec_ntlmssp_state, gensec_ntlmssp_state->server_info);
693
if (gensec_ntlmssp_state->server_info->user_session_key.length) {
694
DEBUG(10, ("Got NT session key of length %u\n",
695
(unsigned)gensec_ntlmssp_state->server_info->user_session_key.length));
696
if (!talloc_reference(mem_ctx, gensec_ntlmssp_state->server_info->user_session_key.data)) {
697
return NT_STATUS_NO_MEMORY;
700
*user_session_key = gensec_ntlmssp_state->server_info->user_session_key;
702
if (gensec_ntlmssp_state->server_info->lm_session_key.length) {
703
DEBUG(10, ("Got LM session key of length %u\n",
704
(unsigned)gensec_ntlmssp_state->server_info->lm_session_key.length));
705
if (!talloc_reference(mem_ctx, gensec_ntlmssp_state->server_info->lm_session_key.data)) {
706
return NT_STATUS_NO_MEMORY;
709
*lm_session_key = gensec_ntlmssp_state->server_info->lm_session_key;
715
* Return the credentials of a logged on user, including session keys
718
* Only valid after a successful authentication
720
* May only be called once per authentication.
724
NTSTATUS gensec_ntlmssp_session_info(struct gensec_security *gensec_security,
725
struct auth_session_info **session_info)
728
struct gensec_ntlmssp_state *gensec_ntlmssp_state = (struct gensec_ntlmssp_state *)gensec_security->private_data;
730
nt_status = auth_generate_session_info(gensec_ntlmssp_state, gensec_security->event_ctx, gensec_security->settings->lp_ctx, gensec_ntlmssp_state->server_info, session_info);
731
NT_STATUS_NOT_OK_RETURN(nt_status);
733
(*session_info)->session_key = data_blob_talloc(*session_info,
734
gensec_ntlmssp_state->session_key.data,
735
gensec_ntlmssp_state->session_key.length);
741
* Start NTLMSSP on the server side
744
NTSTATUS gensec_ntlmssp_server_start(struct gensec_security *gensec_security)
747
struct gensec_ntlmssp_state *gensec_ntlmssp_state;
749
nt_status = gensec_ntlmssp_start(gensec_security);
750
NT_STATUS_NOT_OK_RETURN(nt_status);
752
gensec_ntlmssp_state = (struct gensec_ntlmssp_state *)gensec_security->private_data;
754
gensec_ntlmssp_state->role = NTLMSSP_SERVER;
756
gensec_ntlmssp_state->workstation = NULL;
757
gensec_ntlmssp_state->server_name = lp_netbios_name(gensec_security->settings->lp_ctx);
759
gensec_ntlmssp_state->domain = lp_workgroup(gensec_security->settings->lp_ctx);
761
gensec_ntlmssp_state->expected_state = NTLMSSP_NEGOTIATE;
763
gensec_ntlmssp_state->allow_lm_key = (lp_lanman_auth(gensec_security->settings->lp_ctx)
764
&& gensec_setting_bool(gensec_security->settings, "ntlmssp_server", "allow_lm_key", false));
766
gensec_ntlmssp_state->server_multiple_authentications = false;
768
gensec_ntlmssp_state->neg_flags =
769
NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_UNKNOWN_02000000;
771
gensec_ntlmssp_state->lm_resp = data_blob(NULL, 0);
772
gensec_ntlmssp_state->nt_resp = data_blob(NULL, 0);
773
gensec_ntlmssp_state->encrypted_session_key = data_blob(NULL, 0);
775
if (gensec_setting_bool(gensec_security->settings, "ntlmssp_server", "128bit", true)) {
776
gensec_ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_128;
779
if (gensec_setting_bool(gensec_security->settings, "ntlmssp_server", "56bit", true)) {
780
gensec_ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_56;
783
if (gensec_setting_bool(gensec_security->settings, "ntlmssp_server", "keyexchange", true)) {
784
gensec_ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_KEY_EXCH;
787
if (gensec_setting_bool(gensec_security->settings, "ntlmssp_server", "alwayssign", true)) {
788
gensec_ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_ALWAYS_SIGN;
791
if (gensec_setting_bool(gensec_security->settings, "ntlmssp_server", "ntlm2", true)) {
792
gensec_ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_NTLM2;
795
if (gensec_security->want_features & GENSEC_FEATURE_SIGN) {
796
gensec_ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
798
if (gensec_security->want_features & GENSEC_FEATURE_SEAL) {
799
gensec_ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SEAL;
802
gensec_ntlmssp_state->auth_context = gensec_security->auth_context;
804
gensec_ntlmssp_state->get_challenge = auth_ntlmssp_get_challenge;
805
gensec_ntlmssp_state->may_set_challenge = auth_ntlmssp_may_set_challenge;
806
gensec_ntlmssp_state->set_challenge = auth_ntlmssp_set_challenge;
807
gensec_ntlmssp_state->check_password = auth_ntlmssp_check_password;
808
gensec_ntlmssp_state->server_role = lp_server_role(gensec_security->settings->lp_ctx);