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s3:libsmb: unused ntlmssp.c

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Everything uses the top level ntlmssp code via gensec now.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=11804

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
(cherry picked from commit afffe797547a97ec839913e1ca89045989bbea49)
This commit is contained in:
Stefan Metzmacher 2015-12-09 11:49:37 +01:00
parent 7767d82ccb
commit 20c847ff52
3 changed files with 2 additions and 797 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
source3/include/proto.h
View File

@ -862,31 +862,6 @@ bool get_dc_name(const char *domain,
fstring srv_name,
struct sockaddr_storage *ss_out);
/* The following definitions come from libsmb/ntlmssp.c */
struct ntlmssp_state;
NTSTATUS ntlmssp_set_username(struct ntlmssp_state *ntlmssp_state, const char *user) ;
NTSTATUS ntlmssp_set_password(struct ntlmssp_state *ntlmssp_state, const char *password) ;
NTSTATUS ntlmssp_set_password_hash(struct ntlmssp_state *ntlmssp_state,
const char *hash);
NTSTATUS ntlmssp_set_domain(struct ntlmssp_state *ntlmssp_state, const char *domain) ;
void ntlmssp_want_feature_list(struct ntlmssp_state *ntlmssp_state, char *feature_list);
void ntlmssp_want_feature(struct ntlmssp_state *ntlmssp_state, uint32_t feature);
NTSTATUS ntlmssp_update(struct ntlmssp_state *ntlmssp_state,
const DATA_BLOB in, DATA_BLOB *out) ;
bool ntlmssp_is_anonymous(struct ntlmssp_state *ntlmssp_state);
NTSTATUS ntlmssp_server_start(TALLOC_CTX *mem_ctx,
bool is_standalone,
const char *netbios_name,
const char *netbios_domain,
const char *dns_name,
const char *dns_domain,
struct ntlmssp_state **ntlmssp_state);
NTSTATUS ntlmssp_client_start(TALLOC_CTX *mem_ctx,
const char *netbios_name,
const char *netbios_domain,
bool use_ntlmv2,
struct ntlmssp_state **_ntlmssp_state);
/* The following definitions come from libsmb/passchange.c */
NTSTATUS remote_password_change(const char *remote_machine, const char *user_name,

765
source3/libsmb/ntlmssp.c
View File

@ -1,765 +0,0 @@
/*
Unix SMB/Netbios implementation.
Version 3.0
handle NLTMSSP, server side
Copyright (C) Andrew Tridgell 2001
Copyright (C) Andrew Bartlett 2001-2010
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 "../auth/ntlmssp/ntlmssp.h"
#include "../auth/ntlmssp/ntlmssp_private.h"
#include "../libcli/auth/libcli_auth.h"
#include "../librpc/gen_ndr/ndr_ntlmssp.h"
#include "../auth/ntlmssp/ntlmssp_ndr.h"
#include "../lib/crypto/md5.h"
#include "../lib/crypto/arcfour.h"
#include "../lib/crypto/hmacmd5.h"
#include "../nsswitch/libwbclient/wbclient.h"
static NTSTATUS ntlmssp3_client_initial(struct ntlmssp_state *ntlmssp_state,
TALLOC_CTX *out_mem_ctx,
DATA_BLOB reply, DATA_BLOB *next_request);
static NTSTATUS ntlmssp3_client_challenge(struct ntlmssp_state *ntlmssp_state,
TALLOC_CTX *out_mem_ctx, /* Unused at this time */
const DATA_BLOB reply, DATA_BLOB *next_request);
/**
* Callbacks for NTLMSSP - for both client and server operating modes
*
*/
static const struct ntlmssp_callbacks {
enum ntlmssp_role role;
enum ntlmssp_message_type ntlmssp_command;
NTSTATUS (*fn)(struct ntlmssp_state *ntlmssp_state,
TALLOC_CTX *out_mem_ctx,
DATA_BLOB in, DATA_BLOB *out);
} ntlmssp_callbacks[] = {
{NTLMSSP_CLIENT, NTLMSSP_INITIAL, ntlmssp3_client_initial},
{NTLMSSP_CLIENT, NTLMSSP_CHALLENGE, ntlmssp3_client_challenge},
{NTLMSSP_CLIENT, NTLMSSP_UNKNOWN, NULL},
{NTLMSSP_SERVER, NTLMSSP_UNKNOWN, NULL}
};
/**
* Set a username on an NTLMSSP context - ensures it is talloc()ed
*
*/
NTSTATUS ntlmssp_set_username(struct ntlmssp_state *ntlmssp_state, const char *user)
{
ntlmssp_state->user = talloc_strdup(ntlmssp_state, user ? user : "" );
if (!ntlmssp_state->user) {
return NT_STATUS_NO_MEMORY;
}
return NT_STATUS_OK;
}
/**
* Converts a password to the hashes on an NTLMSSP context.
*
*/
NTSTATUS ntlmssp_set_password(struct ntlmssp_state *ntlmssp_state, const char *password)
{
uint8_t lm_hash[16];
uint8_t nt_hash[16];
TALLOC_FREE(ntlmssp_state->lm_hash);
TALLOC_FREE(ntlmssp_state->nt_hash);
if (password == NULL) {
return NT_STATUS_OK;
}
if (E_deshash(password, lm_hash)) {
ntlmssp_state->lm_hash = (uint8_t *)
talloc_memdup(ntlmssp_state, lm_hash, 16);
if (!ntlmssp_state->lm_hash) {
return NT_STATUS_NO_MEMORY;
}
}
E_md4hash(password, nt_hash);
ntlmssp_state->nt_hash = (uint8_t *)
talloc_memdup(ntlmssp_state, nt_hash, 16);
if (!ntlmssp_state->nt_hash) {
TALLOC_FREE(ntlmssp_state->lm_hash);
return NT_STATUS_NO_MEMORY;
}
return NT_STATUS_OK;
}
NTSTATUS ntlmssp_set_password_hash(struct ntlmssp_state *state,
const char *pwhash)
{
char nt_hash[16];
size_t converted;
converted = strhex_to_str(
nt_hash, sizeof(nt_hash), pwhash, strlen(pwhash));
if (converted != sizeof(nt_hash)) {
return NT_STATUS_INVALID_PARAMETER;
}
TALLOC_FREE(state->lm_hash);
TALLOC_FREE(state->nt_hash);
state->nt_hash = (uint8_t *)talloc_memdup(state, nt_hash, 16);
if (!state->nt_hash) {
return NT_STATUS_NO_MEMORY;
}
return NT_STATUS_OK;
}
/**
* Set a domain on an NTLMSSP context - ensures it is talloc()ed
*
*/
NTSTATUS ntlmssp_set_domain(struct ntlmssp_state *ntlmssp_state, const char *domain)
{
ntlmssp_state->domain = talloc_strdup(ntlmssp_state,
domain ? domain : "" );
if (!ntlmssp_state->domain) {
return NT_STATUS_NO_MEMORY;
}
return NT_STATUS_OK;
}
/**
* Request features for the NTLMSSP negotiation
*
* @param ntlmssp_state NTLMSSP state
* @param feature_list List of space separated features requested from NTLMSSP.
*/
void ntlmssp_want_feature_list(struct ntlmssp_state *ntlmssp_state, char *feature_list)
{
/*
* We need to set this to allow a later SetPassword
* via the SAMR pipe to succeed. Strange.... We could
* also add NTLMSSP_NEGOTIATE_SEAL here. JRA.
*/
if (in_list("NTLMSSP_FEATURE_SESSION_KEY", feature_list, True)) {
ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
}
if (in_list("NTLMSSP_FEATURE_SIGN", feature_list, True)) {
ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
}
if(in_list("NTLMSSP_FEATURE_SEAL", feature_list, True)) {
ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SEAL;
}
if (in_list("NTLMSSP_FEATURE_CCACHE", feature_list, true)) {
ntlmssp_state->use_ccache = true;
}
}
/**
* Request a feature for the NTLMSSP negotiation
*
* @param ntlmssp_state NTLMSSP state
* @param feature Bit flag specifying the requested feature
*/
void ntlmssp_want_feature(struct ntlmssp_state *ntlmssp_state, uint32_t feature)
{
/* As per JRA's comment above */
if (feature & NTLMSSP_FEATURE_SESSION_KEY) {
ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
}
if (feature & NTLMSSP_FEATURE_SIGN) {
ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
}
if (feature & NTLMSSP_FEATURE_SEAL) {
ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SEAL;
}
if (feature & NTLMSSP_FEATURE_CCACHE) {
ntlmssp_state->use_ccache = true;
}
}
/**
* Next state function for the NTLMSSP state machine
*
* @param ntlmssp_state NTLMSSP State
* @param in The packet in from the NTLMSSP partner, as a DATA_BLOB
* @param out The reply, as an allocated DATA_BLOB, caller to free.
* @return Errors, NT_STATUS_MORE_PROCESSING_REQUIRED or NT_STATUS_OK.
*/
NTSTATUS ntlmssp_update(struct ntlmssp_state *ntlmssp_state,
const DATA_BLOB input, DATA_BLOB *out)
{
uint32_t ntlmssp_command;
int i;
if (ntlmssp_state->expected_state == NTLMSSP_DONE) {
/* Called update after negotiations finished. */
DEBUG(1, ("Called NTLMSSP after state machine was 'done'\n"));
return NT_STATUS_INVALID_PARAMETER;
}
*out = data_blob_null;
if (!input.length) {
switch (ntlmssp_state->role) {
case NTLMSSP_CLIENT:
ntlmssp_command = NTLMSSP_INITIAL;
break;
case NTLMSSP_SERVER:
/* 'datagram' mode - no neg packet */
ntlmssp_command = NTLMSSP_NEGOTIATE;
break;
default:
DEBUG(1, ("Invalid role: %d\n", ntlmssp_state->role));
return NT_STATUS_INVALID_PARAMETER;
}
} else {
if (!msrpc_parse(ntlmssp_state, &input, "Cd",
"NTLMSSP",
&ntlmssp_command)) {
DEBUG(1, ("Failed to parse NTLMSSP packet, could not extract NTLMSSP command\n"));
dump_data(2, input.data, input.length);
return NT_STATUS_INVALID_PARAMETER;
}
}
if (ntlmssp_command != ntlmssp_state->expected_state) {
DEBUG(1, ("got NTLMSSP command %u, expected %u\n", ntlmssp_command, ntlmssp_state->expected_state));
return NT_STATUS_INVALID_PARAMETER;
}
for (i=0; ntlmssp_callbacks[i].fn; i++) {
if (ntlmssp_callbacks[i].role == ntlmssp_state->role
&& ntlmssp_callbacks[i].ntlmssp_command == ntlmssp_command) {
return ntlmssp_callbacks[i].fn(ntlmssp_state, ntlmssp_state, input, out);
}
}
DEBUG(1, ("failed to find NTLMSSP callback for NTLMSSP mode %u, command %u\n",
ntlmssp_state->role, ntlmssp_command));
return NT_STATUS_INVALID_PARAMETER;
}
/*********************************************************************
Client side NTLMSSP
*********************************************************************/
/**
* Next state function for the Initial packet
*
* @param ntlmssp_state NTLMSSP State
* @param request The request, as a DATA_BLOB. reply.data must be NULL
* @param request The reply, as an allocated DATA_BLOB, caller to free.
* @return Errors or NT_STATUS_OK.
*/
static NTSTATUS ntlmssp3_client_initial(struct ntlmssp_state *ntlmssp_state,
TALLOC_CTX *out_mem_ctx,
DATA_BLOB in, DATA_BLOB *out)
{
const char *domain = ntlmssp_state->client.netbios_domain;
const char *workstation = ntlmssp_state->client.netbios_name;
NTSTATUS status;
/* These don't really matter in the initial packet, so don't panic if they are not set */
if (!domain) {
domain = "";
}
if (!workstation) {
workstation = "";
}
if (ntlmssp_state->unicode) {
ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_UNICODE;
} else {
ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_OEM;
}
if (ntlmssp_state->use_ntlmv2) {
ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_NTLM2;
}
/* generate the ntlmssp negotiate packet */
status = msrpc_gen(out_mem_ctx,
out, "CddAA",
"NTLMSSP",
NTLMSSP_NEGOTIATE,
ntlmssp_state->neg_flags,
domain,
workstation);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0, ("ntlmssp_client_initial: failed to generate "
"ntlmssp negotiate packet\n"));
return status;
}
if (DEBUGLEVEL >= 10) {
struct NEGOTIATE_MESSAGE *negotiate = talloc(
talloc_tos(), struct NEGOTIATE_MESSAGE);
if (negotiate != NULL) {
status = ntlmssp_pull_NEGOTIATE_MESSAGE(
out, negotiate, negotiate);
if (NT_STATUS_IS_OK(status)) {
NDR_PRINT_DEBUG(NEGOTIATE_MESSAGE,
negotiate);
}
TALLOC_FREE(negotiate);
}
}
ntlmssp_state->expected_state = NTLMSSP_CHALLENGE;
return NT_STATUS_MORE_PROCESSING_REQUIRED;
}
bool ntlmssp_is_anonymous(struct ntlmssp_state *ntlmssp_state)
{
const char *user = ntlmssp_state->user;
if (user == NULL) {
return true;
}
if (strlen(user) == 0) {
return true;
}
return false;
}
/**
* Next state function for the Challenge Packet. Generate an auth packet.
*
* @param ntlmssp_state NTLMSSP State
* @param request The request, as a DATA_BLOB. reply.data must be NULL
* @param request The reply, as an allocated DATA_BLOB, caller to free.
* @return Errors or NT_STATUS_OK.
*/
static NTSTATUS ntlmssp3_client_challenge(struct ntlmssp_state *ntlmssp_state,
TALLOC_CTX *out_mem_ctx, /* Unused at this time */
const DATA_BLOB reply, DATA_BLOB *next_request)
{
uint32_t chal_flags, ntlmssp_command, unkn1 = 0, unkn2 = 0;
DATA_BLOB server_domain_blob;
DATA_BLOB challenge_blob;
DATA_BLOB struct_blob = data_blob_null;
char *server_domain;
const char *chal_parse_string;
const char *chal_parse_string_short = NULL;
const char *auth_gen_string;
DATA_BLOB lm_response = data_blob_null;
DATA_BLOB nt_response = data_blob_null;
DATA_BLOB session_key = data_blob_null;
DATA_BLOB encrypted_session_key = data_blob_null;
NTSTATUS nt_status = NT_STATUS_OK;
bool anon = ntlmssp_is_anonymous(ntlmssp_state);
if (!anon && ntlmssp_state->use_ccache) {
struct wbcCredentialCacheParams params;
struct wbcCredentialCacheInfo *info = NULL;
struct wbcAuthErrorInfo *error = NULL;
struct wbcNamedBlob auth_blob;
struct wbcBlob *wbc_next = NULL;
struct wbcBlob *wbc_session_key = NULL;
wbcErr wbc_status;
int i;
/*
* We need to set the netbios name or we are not able to connect
* a Windows DC.
*/
if (ntlmssp_state->server.netbios_domain == NULL ||
ntlmssp_state->server.netbios_domain[0] == '\0') {
ntlmssp_state->server.netbios_domain = ntlmssp_state->domain;
}
params.account_name = ntlmssp_state->user;
params.domain_name = ntlmssp_state->domain;
params.level = WBC_CREDENTIAL_CACHE_LEVEL_NTLMSSP;
auth_blob.name = "challenge_blob";
auth_blob.flags = 0;
auth_blob.blob.data = reply.data;
auth_blob.blob.length = reply.length;
params.num_blobs = 1;
params.blobs = &auth_blob;
wbc_status = wbcCredentialCache(&params, &info, &error);
wbcFreeMemory(error);
if (!WBC_ERROR_IS_OK(wbc_status)) {
goto noccache;
}
for (i=0; i<info->num_blobs; i++) {
if (strequal(info->blobs[i].name, "auth_blob")) {
wbc_next = &info->blobs[i].blob;
}
if (strequal(info->blobs[i].name, "session_key")) {
wbc_session_key = &info->blobs[i].blob;
}
}
if ((wbc_next == NULL) || (wbc_session_key == NULL)) {
wbcFreeMemory(info);
goto noccache;
}
*next_request = data_blob_talloc(ntlmssp_state,
wbc_next->data,
wbc_next->length);
ntlmssp_state->session_key = data_blob_talloc(ntlmssp_state,
wbc_session_key->data,
wbc_session_key->length);
wbcFreeMemory(info);
goto done;
}
noccache:
if (!msrpc_parse(ntlmssp_state, &reply, "CdBd",
"NTLMSSP",
&ntlmssp_command,
&server_domain_blob,
&chal_flags)) {
DEBUG(1, ("Failed to parse the NTLMSSP Challenge: (#1)\n"));
dump_data(2, reply.data, reply.length);
return NT_STATUS_INVALID_PARAMETER;
}
if (DEBUGLEVEL >= 10) {
struct CHALLENGE_MESSAGE *challenge = talloc(
talloc_tos(), struct CHALLENGE_MESSAGE);
if (challenge != NULL) {
NTSTATUS status;
challenge->NegotiateFlags = chal_flags;
status = ntlmssp_pull_CHALLENGE_MESSAGE(
&reply, challenge, challenge);
if (NT_STATUS_IS_OK(status)) {
NDR_PRINT_DEBUG(CHALLENGE_MESSAGE,
challenge);
}
TALLOC_FREE(challenge);
}
}
data_blob_free(&server_domain_blob);
DEBUG(3, ("Got challenge flags:\n"));
debug_ntlmssp_flags(chal_flags);
ntlmssp_handle_neg_flags(ntlmssp_state, chal_flags, lp_client_lanman_auth());
if (ntlmssp_state->unicode) {
if (chal_flags & NTLMSSP_NEGOTIATE_TARGET_INFO) {
chal_parse_string = "CdUdbddB";
} else {
chal_parse_string = "CdUdbdd";
chal_parse_string_short = "CdUdb";
}
auth_gen_string = "CdBBUUUBd";
} else {
if (chal_flags & NTLMSSP_NEGOTIATE_TARGET_INFO) {
chal_parse_string = "CdAdbddB";
} else {
chal_parse_string = "CdAdbdd";
chal_parse_string_short = "CdAdb";
}
auth_gen_string = "CdBBAAABd";
}
DEBUG(3, ("NTLMSSP: Set final flags:\n"));
debug_ntlmssp_flags(ntlmssp_state->neg_flags);
if (!msrpc_parse(ntlmssp_state, &reply, chal_parse_string,
"NTLMSSP",
&ntlmssp_command,
&server_domain,
&chal_flags,
&challenge_blob, 8,
&unkn1, &unkn2,
&struct_blob)) {
bool ok = false;
DEBUG(1, ("Failed to parse the NTLMSSP Challenge: (#2)\n"));
if (chal_parse_string_short != NULL) {
/*
* In the case where NTLMSSP_NEGOTIATE_TARGET_INFO
* is not used, some NTLMSSP servers don't return
* the unused unkn1 and unkn2 fields.
* See bug:
* https://bugzilla.samba.org/show_bug.cgi?id=10016
* for packet traces.
* Try and parse again without them.
*/
ok = msrpc_parse(ntlmssp_state, &reply,
chal_parse_string_short,
"NTLMSSP",
&ntlmssp_command,
&server_domain,
&chal_flags,
&challenge_blob, 8);
if (!ok) {
DEBUG(1, ("Failed to short parse "
"the NTLMSSP Challenge: (#2)\n"));
}
}
if (!ok) {
dump_data(2, reply.data, reply.length);
return NT_STATUS_INVALID_PARAMETER;
}
}
if (chal_flags & NTLMSSP_TARGET_TYPE_SERVER) {
ntlmssp_state->server.is_standalone = true;
} else {
ntlmssp_state->server.is_standalone = false;
}
/* TODO: parse struct_blob and fill in the rest */
ntlmssp_state->server.netbios_name = "";
ntlmssp_state->server.netbios_domain = server_domain;
ntlmssp_state->server.dns_name = "";
ntlmssp_state->server.dns_domain = "";
if (challenge_blob.length != 8) {
data_blob_free(&struct_blob);
return NT_STATUS_INVALID_PARAMETER;
}
if (anon || !ntlmssp_state->nt_hash) {
static const uint8_t zeros[16] = {0, };
/* do nothing - blobs are zero length */
/* session key is all zeros */
session_key = data_blob_talloc(ntlmssp_state, zeros, 16);
/* not doing NLTM2 without a password */
ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_NTLM2;
} else if (ntlmssp_state->use_ntlmv2) {
if (!struct_blob.length) {
/* be lazy, match win2k - we can't do NTLMv2 without it */
DEBUG(1, ("Server did not provide 'target information', required for NTLMv2\n"));
return NT_STATUS_INVALID_PARAMETER;
}
/* TODO: if the remote server is standalone, then we should replace 'domain'
with the server name as supplied above */
if (!SMBNTLMv2encrypt_hash(ntlmssp_state,
ntlmssp_state->user,
ntlmssp_state->domain,
ntlmssp_state->nt_hash, &challenge_blob,
&struct_blob,
&lm_response, &nt_response, NULL,
&session_key)) {
data_blob_free(&challenge_blob);
data_blob_free(&struct_blob);
return NT_STATUS_NO_MEMORY;
}
} else if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_NTLM2) {
MD5_CTX md5_session_nonce_ctx;
uint8_t session_nonce[16];
uint8_t session_nonce_hash[16];
uint8_t user_session_key[16];
lm_response = data_blob_talloc(ntlmssp_state, NULL, 24);
generate_random_buffer(lm_response.data, 8);
memset(lm_response.data+8, 0, 16);
memcpy(session_nonce, challenge_blob.data, 8);
memcpy(&session_nonce[8], lm_response.data, 8);
MD5Init(&md5_session_nonce_ctx);
MD5Update(&md5_session_nonce_ctx, challenge_blob.data, 8);
MD5Update(&md5_session_nonce_ctx, lm_response.data, 8);
MD5Final(session_nonce_hash, &md5_session_nonce_ctx);
DEBUG(5, ("NTLMSSP challenge set by NTLM2\n"));
DEBUG(5, ("challenge is: \n"));
dump_data(5, session_nonce_hash, 8);
nt_response = data_blob_talloc(ntlmssp_state, NULL, 24);
SMBNTencrypt_hash(ntlmssp_state->nt_hash,
session_nonce_hash,
nt_response.data);
session_key = data_blob_talloc(ntlmssp_state, NULL, 16);
SMBsesskeygen_ntv1(ntlmssp_state->nt_hash, user_session_key);
hmac_md5(user_session_key, session_nonce, sizeof(session_nonce), session_key.data);
dump_data_pw("NTLM2 session key:\n", session_key.data, session_key.length);
} else {
/* lanman auth is insecure, it may be disabled */
if (lp_client_lanman_auth() && ntlmssp_state->lm_hash) {
lm_response = data_blob_talloc(ntlmssp_state,
NULL, 24);
SMBencrypt_hash(ntlmssp_state->lm_hash,challenge_blob.data,
lm_response.data);
}
nt_response = data_blob_talloc(ntlmssp_state, NULL, 24);
SMBNTencrypt_hash(ntlmssp_state->nt_hash,challenge_blob.data,
nt_response.data);
session_key = data_blob_talloc(ntlmssp_state, NULL, 16);
if ((ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_LM_KEY)
&& lp_client_lanman_auth() && ntlmssp_state->lm_hash) {
SMBsesskeygen_lm_sess_key(ntlmssp_state->lm_hash, lm_response.data,
session_key.data);
dump_data_pw("LM session key\n", session_key.data, session_key.length);
} else {
SMBsesskeygen_ntv1(ntlmssp_state->nt_hash, session_key.data);
dump_data_pw("NT session key:\n", session_key.data, session_key.length);
}
}
data_blob_free(&struct_blob);
/* Key exchange encryptes a new client-generated session key with
the password-derived key */
if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCH) {
/* Make up a new session key */
uint8_t client_session_key[16];
generate_random_buffer(client_session_key, sizeof(client_session_key));
/* Encrypt the new session key with the old one */
encrypted_session_key = data_blob(client_session_key, sizeof(client_session_key));
dump_data_pw("KEY_EXCH session key:\n", encrypted_session_key.data, encrypted_session_key.length);
arcfour_crypt_blob(encrypted_session_key.data, encrypted_session_key.length, &session_key);
dump_data_pw("KEY_EXCH session key (enc):\n", encrypted_session_key.data, encrypted_session_key.length);
/* Mark the new session key as the 'real' session key */
data_blob_free(&session_key);
session_key = data_blob_talloc(ntlmssp_state,
client_session_key,
sizeof(client_session_key));
}
/* this generates the actual auth packet */
nt_status = msrpc_gen(ntlmssp_state, next_request, auth_gen_string,
"NTLMSSP",
NTLMSSP_AUTH,
lm_response.data, lm_response.length,
nt_response.data, nt_response.length,
ntlmssp_state->domain,
ntlmssp_state->user,
ntlmssp_state->client.netbios_name,
encrypted_session_key.data, encrypted_session_key.length,
ntlmssp_state->neg_flags);
if (!NT_STATUS_IS_OK(nt_status)) {
return NT_STATUS_NO_MEMORY;
}
if (DEBUGLEVEL >= 10) {
struct AUTHENTICATE_MESSAGE *authenticate = talloc(
talloc_tos(), struct AUTHENTICATE_MESSAGE);
if (authenticate != NULL) {
NTSTATUS status;
authenticate->NegotiateFlags =
ntlmssp_state->neg_flags;
status = ntlmssp_pull_AUTHENTICATE_MESSAGE(
next_request, authenticate, authenticate);
if (NT_STATUS_IS_OK(status)) {
NDR_PRINT_DEBUG(AUTHENTICATE_MESSAGE,
authenticate);
}
TALLOC_FREE(authenticate);
}
}
data_blob_free(&encrypted_session_key);
data_blob_free(&ntlmssp_state->chal);
ntlmssp_state->session_key = session_key;
ntlmssp_state->chal = challenge_blob;
ntlmssp_state->lm_resp = lm_response;
ntlmssp_state->nt_resp = nt_response;
done:
ntlmssp_state->expected_state = NTLMSSP_DONE;
if (!NT_STATUS_IS_OK(nt_status = ntlmssp_sign_init(ntlmssp_state))) {
DEBUG(1, ("Could not setup NTLMSSP signing/sealing system (error was: %s)\n", nt_errstr(nt_status)));
}
return nt_status;
}
NTSTATUS ntlmssp_client_start(TALLOC_CTX *mem_ctx,
const char *netbios_name,
const char *netbios_domain,
bool use_ntlmv2,
struct ntlmssp_state **_ntlmssp_state)
{
struct ntlmssp_state *ntlmssp_state;
if (!netbios_name) {
netbios_name = "";
}
if (!netbios_domain) {
netbios_domain = "";
}
ntlmssp_state = talloc_zero(mem_ctx, struct ntlmssp_state);
if (!ntlmssp_state) {
return NT_STATUS_NO_MEMORY;
}
ntlmssp_state->role = NTLMSSP_CLIENT;
ntlmssp_state->unicode = True;
ntlmssp_state->use_ntlmv2 = use_ntlmv2;
ntlmssp_state->expected_state = NTLMSSP_INITIAL;
ntlmssp_state->neg_flags =
NTLMSSP_NEGOTIATE_128 |
NTLMSSP_NEGOTIATE_ALWAYS_SIGN |
NTLMSSP_NEGOTIATE_NTLM |
NTLMSSP_NEGOTIATE_NTLM2 |
NTLMSSP_NEGOTIATE_KEY_EXCH |
NTLMSSP_REQUEST_TARGET;
ntlmssp_state->client.netbios_name = talloc_strdup(ntlmssp_state, netbios_name);
if (!ntlmssp_state->client.netbios_name) {
talloc_free(ntlmssp_state);
return NT_STATUS_NO_MEMORY;
}
ntlmssp_state->client.netbios_domain = talloc_strdup(ntlmssp_state, netbios_domain);
if (!ntlmssp_state->client.netbios_domain) {
talloc_free(ntlmssp_state);
return NT_STATUS_NO_MEMORY;
}
*_ntlmssp_state = ntlmssp_state;
return NT_STATUS_OK;
}

9
source3/wscript_build
View File

@ -369,13 +369,9 @@ bld.SAMBA3_LIBRARY('smbd_shim',
deps='talloc',
private_library=True)
bld.SAMBA3_SUBSYSTEM('LIBNTLMSSP',
source='''libsmb/ntlmssp.c''',
deps='NDR_NTLMSSP NTLMSSP_COMMON wbclient')
bld.SAMBA3_SUBSYSTEM('auth_generic',
source='libsmb/auth_generic.c',
deps='LIBNTLMSSP gse gensec')
deps='gse gensec')
bld.SAMBA3_LIBRARY('libsmb',
source='''libsmb/clientgen.c
@ -403,7 +399,6 @@ bld.SAMBA3_LIBRARY('libsmb',
libsmb/smbsock_connect.c
libsmb/cli_smb2_fnum.c''',
deps='''
LIBNTLMSSP
auth_generic
CLDAP
LIBNMB
@ -1447,7 +1442,7 @@ bld.SAMBA3_BINARY('ntlm_auth',
tiniparser
libsmb
popt_samba3
LIBNTLMSSP gse gensec''')
gse gensec''')
bld.SAMBA3_BINARY('timelimit',
source='script/tests/timelimit.c',