-/*
+/*
Unix SMB/Netbios implementation.
Version 3.0
handle NLTMSSP, server side
Copyright (C) Andrew Tridgell 2001
Copyright (C) Andrew Bartlett 2001-2003
+ Copyright (C) Andrew Bartlett 2005 (Updated from gensec).
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 2 of the License, or
+ 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, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
+#include "../libcli/auth/libcli_auth.h"
+#include "../librpc/gen_ndr/ndr_ntlmssp.h"
+#include "../libcli/auth/ntlmssp_ndr.h"
-static NTSTATUS ntlmssp_client_initial(struct ntlmssp_state *ntlmssp_state,
+static NTSTATUS ntlmssp_client_initial(struct ntlmssp_state *ntlmssp_state,
DATA_BLOB reply, DATA_BLOB *next_request);
static NTSTATUS ntlmssp_server_negotiate(struct ntlmssp_state *ntlmssp_state,
const DATA_BLOB in, DATA_BLOB *out);
-static NTSTATUS ntlmssp_client_challenge(struct ntlmssp_state *ntlmssp_state,
+static NTSTATUS ntlmssp_client_challenge(struct ntlmssp_state *ntlmssp_state,
const DATA_BLOB reply, DATA_BLOB *next_request);
static NTSTATUS ntlmssp_server_auth(struct ntlmssp_state *ntlmssp_state,
const DATA_BLOB request, DATA_BLOB *reply);
/**
* Callbacks for NTLMSSP - for both client and server operating modes
- *
+ *
*/
static const struct ntlmssp_callbacks {
enum NTLMSSP_ROLE role;
enum NTLM_MESSAGE_TYPE ntlmssp_command;
- NTSTATUS (*fn)(struct ntlmssp_state *ntlmssp_state,
+ NTSTATUS (*fn)(struct ntlmssp_state *ntlmssp_state,
DATA_BLOB in, DATA_BLOB *out);
} ntlmssp_callbacks[] = {
{NTLMSSP_CLIENT, NTLMSSP_INITIAL, ntlmssp_client_initial},
/**
- * Print out the NTLMSSP flags for debugging
+ * Print out the NTLMSSP flags for debugging
* @param neg_flags The flags from the packet
*/
void debug_ntlmssp_flags(uint32 neg_flags)
{
DEBUG(3,("Got NTLMSSP neg_flags=0x%08x\n", neg_flags));
-
- if (neg_flags & NTLMSSP_NEGOTIATE_UNICODE)
+
+ if (neg_flags & NTLMSSP_NEGOTIATE_UNICODE)
DEBUGADD(4, (" NTLMSSP_NEGOTIATE_UNICODE\n"));
- if (neg_flags & NTLMSSP_NEGOTIATE_OEM)
+ if (neg_flags & NTLMSSP_NEGOTIATE_OEM)
DEBUGADD(4, (" NTLMSSP_NEGOTIATE_OEM\n"));
- if (neg_flags & NTLMSSP_REQUEST_TARGET)
+ if (neg_flags & NTLMSSP_REQUEST_TARGET)
DEBUGADD(4, (" NTLMSSP_REQUEST_TARGET\n"));
- if (neg_flags & NTLMSSP_NEGOTIATE_SIGN)
+ if (neg_flags & NTLMSSP_NEGOTIATE_SIGN)
DEBUGADD(4, (" NTLMSSP_NEGOTIATE_SIGN\n"));
- if (neg_flags & NTLMSSP_NEGOTIATE_SEAL)
+ if (neg_flags & NTLMSSP_NEGOTIATE_SEAL)
DEBUGADD(4, (" NTLMSSP_NEGOTIATE_SEAL\n"));
- if (neg_flags & NTLMSSP_NEGOTIATE_LM_KEY)
+ if (neg_flags & NTLMSSP_NEGOTIATE_DATAGRAM)
+ DEBUGADD(4, (" NTLMSSP_NEGOTIATE_DATAGRAM\n"));
+ if (neg_flags & NTLMSSP_NEGOTIATE_LM_KEY)
DEBUGADD(4, (" NTLMSSP_NEGOTIATE_LM_KEY\n"));
- if (neg_flags & NTLMSSP_NEGOTIATE_NETWARE)
+ if (neg_flags & NTLMSSP_NEGOTIATE_NETWARE)
DEBUGADD(4, (" NTLMSSP_NEGOTIATE_NETWARE\n"));
- if (neg_flags & NTLMSSP_NEGOTIATE_NTLM)
+ if (neg_flags & NTLMSSP_NEGOTIATE_NTLM)
DEBUGADD(4, (" NTLMSSP_NEGOTIATE_NTLM\n"));
- if (neg_flags & NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED)
- DEBUGADD(4, (" NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED\n"));
- if (neg_flags & NTLMSSP_NEGOTIATE_WORKSTATION_SUPPLIED)
- DEBUGADD(4, (" NTLMSSP_NEGOTIATE_WORKSTATION_SUPPLIED\n"));
- if (neg_flags & NTLMSSP_NEGOTIATE_THIS_IS_LOCAL_CALL)
+ if (neg_flags & NTLMSSP_NEGOTIATE_OEM_DOMAIN_SUPPLIED)
+ DEBUGADD(4, (" NTLMSSP_NEGOTIATE_OEM_DOMAIN_SUPPLIED\n"));
+ if (neg_flags & NTLMSSP_NEGOTIATE_OEM_WORKSTATION_SUPPLIED)
+ DEBUGADD(4, (" NTLMSSP_NEGOTIATE_OEM_WORKSTATION_SUPPLIED\n"));
+ if (neg_flags & NTLMSSP_NEGOTIATE_THIS_IS_LOCAL_CALL)
DEBUGADD(4, (" NTLMSSP_NEGOTIATE_THIS_IS_LOCAL_CALL\n"));
- if (neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN)
+ if (neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN)
DEBUGADD(4, (" NTLMSSP_NEGOTIATE_ALWAYS_SIGN\n"));
- if (neg_flags & NTLMSSP_NEGOTIATE_NTLM2)
+ if (neg_flags & NTLMSSP_REQUEST_NON_NT_SESSION_KEY)
+ DEBUGADD(4, (" NTLMSSP_REQUEST_NON_NT_SESSION_KEY\n"));
+ if (neg_flags & NTLMSSP_NEGOTIATE_NTLM2)
DEBUGADD(4, (" NTLMSSP_NEGOTIATE_NTLM2\n"));
- if (neg_flags & NTLMSSP_CHAL_TARGET_INFO)
- DEBUGADD(4, (" NTLMSSP_CHAL_TARGET_INFO\n"));
- if (neg_flags & NTLMSSP_NEGOTIATE_128)
+ if (neg_flags & NTLMSSP_NEGOTIATE_TARGET_INFO)
+ DEBUGADD(4, (" NTLMSSP_NEGOTIATE_TARGET_INFO\n"));
+ if (neg_flags & NTLMSSP_NEGOTIATE_VERSION)
+ DEBUGADD(4, (" NTLMSSP_NEGOTIATE_VERSION\n"));
+ if (neg_flags & NTLMSSP_NEGOTIATE_128)
DEBUGADD(4, (" NTLMSSP_NEGOTIATE_128\n"));
- if (neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCH)
+ if (neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCH)
DEBUGADD(4, (" NTLMSSP_NEGOTIATE_KEY_EXCH\n"));
+ if (neg_flags & NTLMSSP_NEGOTIATE_56)
+ DEBUGADD(4, (" NTLMSSP_NEGOTIATE_56\n"));
}
/**
* Default challenge generation code.
*
*/
-
-static const uint8 *get_challenge(const struct ntlmssp_state *ntlmssp_state)
-{
- static uchar chal[8];
- generate_random_buffer(chal, sizeof(chal));
- return chal;
+static void get_challenge(const struct ntlmssp_state *ntlmssp_state,
+ uint8_t chal[8])
+{
+ generate_random_buffer(chal, 8);
}
/**
* Default 'we can set the challenge to anything we like' implementation
*
*/
-
-static BOOL may_set_challenge(const struct ntlmssp_state *ntlmssp_state)
+
+static bool may_set_challenge(const struct ntlmssp_state *ntlmssp_state)
{
return True;
}
* Does not actually do anything, as the value is always in the structure anyway.
*
*/
-
+
static NTSTATUS set_challenge(struct ntlmssp_state *ntlmssp_state, DATA_BLOB *challenge)
{
SMB_ASSERT(challenge->length == 8);
return NT_STATUS_OK;
}
-/**
- * Set a username on an NTLMSSP context - ensures it is talloc()ed
+/**
+ * Set a username on an NTLMSSP context - ensures it is talloc()ed
*
*/
-NTSTATUS ntlmssp_set_username(NTLMSSP_STATE *ntlmssp_state, const char *user)
+NTSTATUS ntlmssp_set_username(NTLMSSP_STATE *ntlmssp_state, const char *user)
{
- ntlmssp_state->user = talloc_strdup(ntlmssp_state->mem_ctx, user);
+ ntlmssp_state->user = talloc_strdup(ntlmssp_state, user ? user : "" );
if (!ntlmssp_state->user) {
return NT_STATUS_NO_MEMORY;
}
return NT_STATUS_OK;
}
-/**
- * Set a password on an NTLMSSP context - ensures it is talloc()ed
+/**
+ * Store NT and LM hashes on an NTLMSSP context - ensures they are talloc()ed
+ *
+ */
+NTSTATUS ntlmssp_set_hashes(NTLMSSP_STATE *ntlmssp_state,
+ const unsigned char lm_hash[16],
+ const unsigned char nt_hash[16])
+{
+ ntlmssp_state->lm_hash = (unsigned char *)
+ TALLOC_MEMDUP(ntlmssp_state, lm_hash, 16);
+ ntlmssp_state->nt_hash = (unsigned char *)
+ TALLOC_MEMDUP(ntlmssp_state, nt_hash, 16);
+ if (!ntlmssp_state->lm_hash || !ntlmssp_state->nt_hash) {
+ TALLOC_FREE(ntlmssp_state->lm_hash);
+ TALLOC_FREE(ntlmssp_state->nt_hash);
+ return NT_STATUS_NO_MEMORY;
+ }
+ return NT_STATUS_OK;
+}
+
+/**
+ * Converts a password to the hashes on an NTLMSSP context.
*
*/
-NTSTATUS ntlmssp_set_password(NTLMSSP_STATE *ntlmssp_state, const char *password)
+NTSTATUS ntlmssp_set_password(NTLMSSP_STATE *ntlmssp_state, const char *password)
{
if (!password) {
- ntlmssp_state->password = NULL;
+ ntlmssp_state->lm_hash = NULL;
+ ntlmssp_state->nt_hash = NULL;
} else {
- ntlmssp_state->password = talloc_strdup(ntlmssp_state->mem_ctx, password);
- if (!ntlmssp_state->password) {
- return NT_STATUS_NO_MEMORY;
- }
+ unsigned char lm_hash[16];
+ unsigned char nt_hash[16];
+
+ E_deshash(password, lm_hash);
+ E_md4hash(password, nt_hash);
+ return ntlmssp_set_hashes(ntlmssp_state, lm_hash, nt_hash);
}
return NT_STATUS_OK;
}
-/**
- * Set a domain on an NTLMSSP context - ensures it is talloc()ed
+/**
+ * Set a domain on an NTLMSSP context - ensures it is talloc()ed
*
*/
-NTSTATUS ntlmssp_set_domain(NTLMSSP_STATE *ntlmssp_state, const char *domain)
+NTSTATUS ntlmssp_set_domain(NTLMSSP_STATE *ntlmssp_state, const char *domain)
{
- ntlmssp_state->domain = talloc_strdup(ntlmssp_state->mem_ctx, domain);
+ ntlmssp_state->domain = talloc_strdup(ntlmssp_state,
+ domain ? domain : "" );
if (!ntlmssp_state->domain) {
return NT_STATUS_NO_MEMORY;
}
return NT_STATUS_OK;
}
-/**
- * Set a workstation on an NTLMSSP context - ensures it is talloc()ed
+/**
+ * Set a workstation on an NTLMSSP context - ensures it is talloc()ed
*
*/
-NTSTATUS ntlmssp_set_workstation(NTLMSSP_STATE *ntlmssp_state, const char *workstation)
+NTSTATUS ntlmssp_set_workstation(NTLMSSP_STATE *ntlmssp_state, const char *workstation)
{
- ntlmssp_state->workstation = talloc_strdup(ntlmssp_state->mem_ctx, workstation);
- if (!ntlmssp_state->domain) {
+ ntlmssp_state->workstation = talloc_strdup(ntlmssp_state, workstation);
+ if (!ntlmssp_state->workstation) {
return NT_STATUS_NO_MEMORY;
}
return NT_STATUS_OK;
*/
NTSTATUS ntlmssp_store_response(NTLMSSP_STATE *ntlmssp_state,
- DATA_BLOB response)
+ DATA_BLOB response)
{
- ntlmssp_state->stored_response = data_blob_talloc(ntlmssp_state->mem_ctx,
- response.data, response.length);
+ ntlmssp_state->stored_response = data_blob_talloc(ntlmssp_state,
+ response.data,
+ response.length);
return NT_STATUS_OK;
}
+/**
+ * Request features for the NTLMSSP negotiation
+ *
+ * @param ntlmssp_state NTLMSSP state
+ * @param feature_list List of space seperated features requested from NTLMSSP.
+ */
+void ntlmssp_want_feature_list(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;
+ }
+}
+
+/**
+ * Request a feature for the NTLMSSP negotiation
+ *
+ * @param ntlmssp_state NTLMSSP state
+ * @param feature Bit flag specifying the requested feature
+ */
+void ntlmssp_want_feature(NTLMSSP_STATE *ntlmssp_state, uint32 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_SEAL;
+ }
+}
+
/**
* 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.
+ * @return Errors, NT_STATUS_MORE_PROCESSING_REQUIRED or NT_STATUS_OK.
*/
-NTSTATUS ntlmssp_update(NTLMSSP_STATE *ntlmssp_state,
- const DATA_BLOB in, DATA_BLOB *out)
+NTSTATUS ntlmssp_update(NTLMSSP_STATE *ntlmssp_state,
+ const DATA_BLOB in, DATA_BLOB *out)
{
DATA_BLOB input;
uint32 ntlmssp_command;
int i;
- *out = data_blob(NULL, 0);
+ 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 (!in.length && ntlmssp_state->stored_response.length) {
input = ntlmssp_state->stored_response;
-
+
/* we only want to read the stored response once - overwrite it */
- ntlmssp_state->stored_response = data_blob(NULL, 0);
+ ntlmssp_state->stored_response = data_blob_null;
} else {
input = in;
}
break;
}
} else {
- if (!msrpc_parse(&input, "Cd",
+ 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, (const char *)input.data, input.length);
+ dump_data(2, input.data, input.length);
return NT_STATUS_INVALID_PARAMETER;
}
}
}
for (i=0; ntlmssp_callbacks[i].fn; i++) {
- if (ntlmssp_callbacks[i].role == ntlmssp_state->role
+ if (ntlmssp_callbacks[i].role == ntlmssp_state->role
&& ntlmssp_callbacks[i].ntlmssp_command == ntlmssp_command) {
return ntlmssp_callbacks[i].fn(ntlmssp_state, input, out);
}
}
- DEBUG(1, ("failed to find NTLMSSP callback for NTLMSSP mode %u, command %u\n",
- ntlmssp_state->role, ntlmssp_command));
+ DEBUG(1, ("failed to find NTLMSSP callback for NTLMSSP mode %u, command %u\n",
+ ntlmssp_state->role, ntlmssp_command));
return NT_STATUS_INVALID_PARAMETER;
}
/**
* End an NTLMSSP state machine
- *
+ *
* @param ntlmssp_state NTLMSSP State, free()ed by this function
*/
void ntlmssp_end(NTLMSSP_STATE **ntlmssp_state)
{
- TALLOC_CTX *mem_ctx = (*ntlmssp_state)->mem_ctx;
-
(*ntlmssp_state)->ref_count--;
if ((*ntlmssp_state)->ref_count == 0) {
data_blob_free(&(*ntlmssp_state)->chal);
data_blob_free(&(*ntlmssp_state)->lm_resp);
data_blob_free(&(*ntlmssp_state)->nt_resp);
-
- talloc_destroy(mem_ctx);
+ TALLOC_FREE(*ntlmssp_state);
}
*ntlmssp_state = NULL;
}
/**
- * Determine correct target name flags for reply, given server role
+ * Determine correct target name flags for reply, given server role
* and negotiated flags
- *
+ *
* @param ntlmssp_state NTLMSSP State
* @param neg_flags The flags from the packet
* @param chal_flags The flags to be set in the reply packet
*/
static const char *ntlmssp_target_name(struct ntlmssp_state *ntlmssp_state,
- uint32 neg_flags, uint32 *chal_flags)
+ uint32 neg_flags, uint32 *chal_flags)
{
if (neg_flags & NTLMSSP_REQUEST_TARGET) {
- *chal_flags |= NTLMSSP_CHAL_TARGET_INFO;
+ *chal_flags |= NTLMSSP_NEGOTIATE_TARGET_INFO;
*chal_flags |= NTLMSSP_REQUEST_TARGET;
if (ntlmssp_state->server_role == ROLE_STANDALONE) {
*chal_flags |= NTLMSSP_TARGET_TYPE_SERVER;
}
static void ntlmssp_handle_neg_flags(struct ntlmssp_state *ntlmssp_state,
- uint32 neg_flags, BOOL allow_lm) {
+ uint32 neg_flags, bool allow_lm) {
if (neg_flags & NTLMSSP_NEGOTIATE_UNICODE) {
ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_UNICODE;
ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_OEM;
ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_LM_KEY;
}
- if (neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN) {
- ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_ALWAYS_SIGN;
+ if (!(neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN)) {
+ ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_ALWAYS_SIGN;
}
if (!(neg_flags & NTLMSSP_NEGOTIATE_NTLM2)) {
ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_128;
}
+ if (!(neg_flags & NTLMSSP_NEGOTIATE_56)) {
+ ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_56;
+ }
+
if (!(neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCH)) {
ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_KEY_EXCH;
}
+ if (!(neg_flags & NTLMSSP_NEGOTIATE_SIGN)) {
+ ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_SIGN;
+ }
+
+ if (!(neg_flags & NTLMSSP_NEGOTIATE_SEAL)) {
+ ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_SEAL;
+ }
+
+ /* Woop Woop - unknown flag for Windows compatibility...
+ What does this really do ? JRA. */
+ if (!(neg_flags & NTLMSSP_NEGOTIATE_VERSION)) {
+ ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_VERSION;
+ }
+
if ((neg_flags & NTLMSSP_REQUEST_TARGET)) {
ntlmssp_state->neg_flags |= NTLMSSP_REQUEST_TARGET;
}
-
}
+/**
+ Weaken NTLMSSP keys to cope with down-level clients and servers.
+
+ We probably should have some parameters to control this, but as
+ it only occours for LM_KEY connections, and this is controlled
+ by the client lanman auth/lanman auth parameters, it isn't too bad.
+*/
+
+DATA_BLOB ntlmssp_weaken_keys(NTLMSSP_STATE *ntlmssp_state, TALLOC_CTX *mem_ctx)
+{
+ DATA_BLOB weakened_key = data_blob_talloc(mem_ctx,
+ ntlmssp_state->session_key.data,
+ ntlmssp_state->session_key.length);
+
+ /* Nothing to weaken. We certainly don't want to 'extend' the length... */
+ if (weakened_key.length < 16) {
+ /* perhaps there was no key? */
+ return weakened_key;
+ }
+
+ /* Key weakening not performed on the master key for NTLM2
+ and does not occour for NTLM1. Therefore we only need
+ to do this for the LM_KEY.
+ */
+
+ if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_LM_KEY) {
+ /* LM key doesn't support 128 bit crypto, so this is
+ * the best we can do. If you negotiate 128 bit, but
+ * not 56, you end up with 40 bit... */
+ if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_56) {
+ weakened_key.data[7] = 0xa0;
+ } else { /* forty bits */
+ weakened_key.data[5] = 0xe5;
+ weakened_key.data[6] = 0x38;
+ weakened_key.data[7] = 0xb0;
+ }
+ weakened_key.length = 8;
+ }
+ return weakened_key;
+}
/**
* Next state function for the Negotiate packet
- *
+ *
* @param ntlmssp_state NTLMSSP State
* @param request The request, as a DATA_BLOB
* @param request The reply, as an allocated DATA_BLOB, caller to free.
- * @return Errors or MORE_PROCESSING_REQUIRED if a reply is sent.
+ * @return Errors or MORE_PROCESSING_REQUIRED if a reply is sent.
*/
static NTSTATUS ntlmssp_server_negotiate(struct ntlmssp_state *ntlmssp_state,
- const DATA_BLOB request, DATA_BLOB *reply)
+ const DATA_BLOB request, DATA_BLOB *reply)
{
DATA_BLOB struct_blob;
- fstring dnsname, dnsdomname;
+ const char *dnsname;
+ char *dnsdomname = NULL;
uint32 neg_flags = 0;
uint32 ntlmssp_command, chal_flags;
- char *cliname=NULL, *domname=NULL;
- const uint8 *cryptkey;
+ uint8_t cryptkey[8];
const char *target_name;
+ struct NEGOTIATE_MESSAGE negotiate;
+ struct CHALLENGE_MESSAGE challenge;
/* parse the NTLMSSP packet */
#if 0
#endif
if (request.length) {
- if (!msrpc_parse(&request, "CddAA",
- "NTLMSSP",
- &ntlmssp_command,
- &neg_flags,
- &cliname,
- &domname)) {
- DEBUG(1, ("ntlmssp_server_negotiate: failed to parse NTLMSSP:\n"));
- dump_data(2, (const char *)request.data, request.length);
+ if ((request.length < 16) || !msrpc_parse(ntlmssp_state, &request, "Cdd",
+ "NTLMSSP",
+ &ntlmssp_command,
+ &neg_flags)) {
+ DEBUG(1, ("ntlmssp_server_negotiate: failed to parse NTLMSSP Negotiate of length %u\n",
+ (unsigned int)request.length));
+ dump_data(2, request.data, request.length);
return NT_STATUS_INVALID_PARAMETER;
}
-
- SAFE_FREE(cliname);
- SAFE_FREE(domname);
-
debug_ntlmssp_flags(neg_flags);
+
+ if (DEBUGLEVEL >= 10) {
+ if (NT_STATUS_IS_OK(ntlmssp_pull_NEGOTIATE_MESSAGE(&request,
+ ntlmssp_state,
+ NULL,
+ &negotiate)))
+ {
+ NDR_PRINT_DEBUG(NEGOTIATE_MESSAGE, &negotiate);
+ }
+ }
}
-
+
ntlmssp_handle_neg_flags(ntlmssp_state, neg_flags, lp_lanman_auth());
/* Ask our caller what challenge they would like in the packet */
- cryptkey = ntlmssp_state->get_challenge(ntlmssp_state);
+ ntlmssp_state->get_challenge(ntlmssp_state, cryptkey);
/* Check if we may set the challenge */
if (!ntlmssp_state->may_set_challenge(ntlmssp_state)) {
/* The flags we send back are not just the negotiated flags,
* they are also 'what is in this packet'. Therfore, we
- * operate on 'chal_flags' from here on
+ * operate on 'chal_flags' from here on
*/
chal_flags = ntlmssp_state->neg_flags;
/* get the right name to fill in as 'target' */
- target_name = ntlmssp_target_name(ntlmssp_state,
- neg_flags, &chal_flags);
- if (target_name == NULL)
+ target_name = ntlmssp_target_name(ntlmssp_state,
+ neg_flags, &chal_flags);
+ if (target_name == NULL)
return NT_STATUS_INVALID_PARAMETER;
- ntlmssp_state->chal = data_blob_talloc(ntlmssp_state->mem_ctx, cryptkey, 8);
- ntlmssp_state->internal_chal = data_blob_talloc(ntlmssp_state->mem_ctx, cryptkey, 8);
-
+ ntlmssp_state->chal = data_blob_talloc(ntlmssp_state, cryptkey, 8);
+ ntlmssp_state->internal_chal = data_blob_talloc(ntlmssp_state,
+ cryptkey, 8);
/* This should be a 'netbios domain -> DNS domain' mapping */
- dnsdomname[0] = '\0';
- get_mydnsdomname(dnsdomname);
+ dnsdomname = get_mydnsdomname(ntlmssp_state);
+ if (!dnsdomname) {
+ dnsdomname = talloc_strdup(ntlmssp_state, "");
+ }
+ if (!dnsdomname) {
+ return NT_STATUS_NO_MEMORY;
+ }
strlower_m(dnsdomname);
-
- dnsname[0] = '\0';
- get_mydnsfullname(dnsname);
-
+
+ dnsname = get_mydnsfullname();
+ if (!dnsname) {
+ dnsname = "";
+ }
+
/* This creates the 'blob' of names that appears at the end of the packet */
- if (chal_flags & NTLMSSP_CHAL_TARGET_INFO)
+ if (chal_flags & NTLMSSP_NEGOTIATE_TARGET_INFO)
{
- const char *target_name_dns = "";
- if (chal_flags |= NTLMSSP_TARGET_TYPE_DOMAIN) {
- target_name_dns = dnsdomname;
- } else if (chal_flags |= NTLMSSP_TARGET_TYPE_SERVER) {
- target_name_dns = dnsname;
- }
-
- msrpc_gen(&struct_blob, "aaaaa",
- NTLMSSP_NAME_TYPE_DOMAIN, target_name,
- NTLMSSP_NAME_TYPE_SERVER, ntlmssp_state->get_global_myname(),
- NTLMSSP_NAME_TYPE_DOMAIN_DNS, dnsdomname,
- NTLMSSP_NAME_TYPE_SERVER_DNS, dnsname,
- 0, "");
+ msrpc_gen(ntlmssp_state, &struct_blob, "aaaaa",
+ MsvAvNbDomainName, target_name,
+ MsvAvNbComputerName, ntlmssp_state->get_global_myname(),
+ MsvAvDnsDomainName, dnsdomname,
+ MsvAvDnsComputerName, dnsname,
+ MsvAvEOL, "");
} else {
- struct_blob = data_blob(NULL, 0);
+ struct_blob = data_blob_null;
}
{
} else {
gen_string = "CdAdbddB";
}
-
- msrpc_gen(reply, gen_string,
- "NTLMSSP",
+
+ msrpc_gen(ntlmssp_state, reply, gen_string,
+ "NTLMSSP",
NTLMSSP_CHALLENGE,
target_name,
chal_flags,
cryptkey, 8,
0, 0,
struct_blob.data, struct_blob.length);
+
+ if (DEBUGLEVEL >= 10) {
+ if (NT_STATUS_IS_OK(ntlmssp_pull_CHALLENGE_MESSAGE(reply,
+ ntlmssp_state,
+ NULL,
+ &challenge)))
+ {
+ NDR_PRINT_DEBUG(CHALLENGE_MESSAGE, &challenge);
+ }
+ }
}
-
+
data_blob_free(&struct_blob);
ntlmssp_state->expected_state = NTLMSSP_AUTH;
/**
* Next state function for the Authenticate packet
- *
+ *
* @param ntlmssp_state NTLMSSP State
* @param request The request, as a DATA_BLOB
* @param request The reply, as an allocated DATA_BLOB, caller to free.
- * @return Errors or NT_STATUS_OK.
+ * @return Errors or NT_STATUS_OK.
*/
static NTSTATUS ntlmssp_server_auth(struct ntlmssp_state *ntlmssp_state,
- const DATA_BLOB request, DATA_BLOB *reply)
+ const DATA_BLOB request, DATA_BLOB *reply)
{
- DATA_BLOB encrypted_session_key = data_blob(NULL, 0);
- DATA_BLOB user_session_key = data_blob(NULL, 0);
- DATA_BLOB lm_session_key = data_blob(NULL, 0);
- DATA_BLOB session_key = data_blob(NULL, 0);
+ DATA_BLOB encrypted_session_key = data_blob_null;
+ DATA_BLOB user_session_key = data_blob_null;
+ DATA_BLOB lm_session_key = data_blob_null;
+ DATA_BLOB session_key = data_blob_null;
uint32 ntlmssp_command, auth_flags;
- NTSTATUS nt_status;
+ NTSTATUS nt_status = NT_STATUS_OK;
+ struct AUTHENTICATE_MESSAGE authenticate;
/* used by NTLM2 */
- BOOL doing_ntlm2 = False;
+ bool doing_ntlm2 = False;
uchar session_nonce[16];
uchar session_nonce_hash[16];
const char *parse_string;
- char *domain = NULL;
- char *user = NULL;
- char *workstation = NULL;
/* parse the NTLMSSP packet */
- *reply = data_blob(NULL, 0);
+ *reply = data_blob_null;
#if 0
file_save("ntlmssp_auth.dat", request.data, request.length);
ntlmssp_state->workstation = NULL;
/* now the NTLMSSP encoded auth hashes */
- if (!msrpc_parse(&request, parse_string,
- "NTLMSSP",
- &ntlmssp_command,
+ if (!msrpc_parse(ntlmssp_state, &request, parse_string,
+ "NTLMSSP",
+ &ntlmssp_command,
&ntlmssp_state->lm_resp,
&ntlmssp_state->nt_resp,
- &domain,
- &user,
- &workstation,
+ &ntlmssp_state->domain,
+ &ntlmssp_state->user,
+ &ntlmssp_state->workstation,
&encrypted_session_key,
&auth_flags)) {
- DEBUG(1, ("ntlmssp_server_auth: failed to parse NTLMSSP:\n"));
- dump_data(2, (const char *)request.data, request.length);
- SAFE_FREE(domain);
- SAFE_FREE(user);
- SAFE_FREE(workstation);
- data_blob_free(&encrypted_session_key);
auth_flags = 0;
-
+
/* Try again with a shorter string (Win9X truncates this packet) */
if (ntlmssp_state->unicode) {
parse_string = "CdBBUUU";
}
/* now the NTLMSSP encoded auth hashes */
- if (!msrpc_parse(&request, parse_string,
- "NTLMSSP",
- &ntlmssp_command,
+ if (!msrpc_parse(ntlmssp_state, &request, parse_string,
+ "NTLMSSP",
+ &ntlmssp_command,
&ntlmssp_state->lm_resp,
&ntlmssp_state->nt_resp,
- &domain,
- &user,
- &workstation)) {
- DEBUG(1, ("ntlmssp_server_auth: failed to parse NTLMSSP:\n"));
- dump_data(2, (const char *)request.data, request.length);
- SAFE_FREE(domain);
- SAFE_FREE(user);
- SAFE_FREE(workstation);
+ &ntlmssp_state->domain,
+ &ntlmssp_state->user,
+ &ntlmssp_state->workstation)) {
+ DEBUG(1, ("ntlmssp_server_auth: failed to parse NTLMSSP (tried both formats):\n"));
+ dump_data(2, request.data, request.length);
return NT_STATUS_INVALID_PARAMETER;
}
if (auth_flags)
ntlmssp_handle_neg_flags(ntlmssp_state, auth_flags, lp_lanman_auth());
- if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_domain(ntlmssp_state, domain))) {
- SAFE_FREE(domain);
- SAFE_FREE(user);
- SAFE_FREE(workstation);
- data_blob_free(&encrypted_session_key);
- return nt_status;
- }
-
- if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_username(ntlmssp_state, user))) {
- SAFE_FREE(domain);
- SAFE_FREE(user);
- SAFE_FREE(workstation);
- data_blob_free(&encrypted_session_key);
- return nt_status;
- }
-
- if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_workstation(ntlmssp_state, workstation))) {
- SAFE_FREE(domain);
- SAFE_FREE(user);
- SAFE_FREE(workstation);
- data_blob_free(&encrypted_session_key);
- return nt_status;
+ if (DEBUGLEVEL >= 10) {
+ if (NT_STATUS_IS_OK(ntlmssp_pull_AUTHENTICATE_MESSAGE(&request,
+ ntlmssp_state,
+ NULL,
+ &authenticate)))
+ {
+ NDR_PRINT_DEBUG(AUTHENTICATE_MESSAGE, &authenticate);
+ }
}
- SAFE_FREE(domain);
- SAFE_FREE(user);
- SAFE_FREE(workstation);
-
DEBUG(3,("Got user=[%s] domain=[%s] workstation=[%s] len1=%lu len2=%lu\n",
ntlmssp_state->user, ntlmssp_state->domain, ntlmssp_state->workstation, (unsigned long)ntlmssp_state->lm_resp.length, (unsigned long)ntlmssp_state->nt_resp.length));
file_save("lmhash1.dat", &ntlmssp_state->lm_resp.data, &ntlmssp_state->lm_resp.length);
#endif
- /* NTLM2 uses a 'challenge' that is made of up both the server challenge, and a
- client challenge
-
+ /* NTLM2 uses a 'challenge' that is made of up both the server challenge, and a
+ client challenge
+
However, the NTLM2 flag may still be set for the real NTLMv2 logins, be careful.
*/
if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_NTLM2) {
if (ntlmssp_state->nt_resp.length == 24 && ntlmssp_state->lm_resp.length == 24) {
struct MD5Context md5_session_nonce_ctx;
SMB_ASSERT(ntlmssp_state->internal_chal.data && ntlmssp_state->internal_chal.length == 8);
-
+
doing_ntlm2 = True;
memcpy(session_nonce, ntlmssp_state->internal_chal.data, 8);
memcpy(&session_nonce[8], ntlmssp_state->lm_resp.data, 8);
-
+
MD5Init(&md5_session_nonce_ctx);
MD5Update(&md5_session_nonce_ctx, session_nonce, 16);
MD5Final(session_nonce_hash, &md5_session_nonce_ctx);
-
- ntlmssp_state->chal = data_blob_talloc(ntlmssp_state->mem_ctx, session_nonce_hash, 8);
+
+ ntlmssp_state->chal = data_blob_talloc(
+ ntlmssp_state, session_nonce_hash, 8);
/* LM response is no longer useful */
data_blob_free(&ntlmssp_state->lm_resp);
data_blob_free(&encrypted_session_key);
return nt_status;
}
+
+ /* LM Key is incompatible. */
+ ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_LM_KEY;
}
}
/* Finally, actually ask if the password is OK */
- if (!NT_STATUS_IS_OK(nt_status = ntlmssp_state->check_password(ntlmssp_state,
+ if (!NT_STATUS_IS_OK(nt_status = ntlmssp_state->check_password(ntlmssp_state,
&user_session_key, &lm_session_key))) {
data_blob_free(&encrypted_session_key);
return nt_status;
/* Handle the different session key derivation for NTLM2 */
if (doing_ntlm2) {
if (user_session_key.data && user_session_key.length == 16) {
- session_key = data_blob_talloc(ntlmssp_state->mem_ctx, NULL, 16);
- hmac_md5(user_session_key.data, session_nonce,
+ session_key = data_blob_talloc(ntlmssp_state,
+ NULL, 16);
+ hmac_md5(user_session_key.data, session_nonce,
sizeof(session_nonce), session_key.data);
DEBUG(10,("ntlmssp_server_auth: Created NTLM2 session key.\n"));
dump_data_pw("NTLM2 session key:\n", session_key.data, session_key.length);
-
+
} else {
DEBUG(10,("ntlmssp_server_auth: Failed to create NTLM2 session key.\n"));
- session_key = data_blob(NULL, 0);
+ session_key = data_blob_null;
}
} else if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_LM_KEY) {
if (lm_session_key.data && lm_session_key.length >= 8) {
if (ntlmssp_state->lm_resp.data && ntlmssp_state->lm_resp.length == 24) {
- session_key = data_blob_talloc(ntlmssp_state->mem_ctx, NULL, 16);
- SMBsesskeygen_lm_sess_key(lm_session_key.data, ntlmssp_state->lm_resp.data,
+ session_key = data_blob_talloc(ntlmssp_state,
+ NULL, 16);
+ if (session_key.data == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ SMBsesskeygen_lm_sess_key(lm_session_key.data, ntlmssp_state->lm_resp.data,
session_key.data);
DEBUG(10,("ntlmssp_server_auth: Created NTLM session key.\n"));
- dump_data_pw("LM session key:\n", session_key.data, session_key.length);
} else {
- /* use the key unmodified - it's
- * probably a NULL key from the guest
- * login */
- session_key = lm_session_key;
+ uint8 zeros[24];
+ ZERO_STRUCT(zeros);
+ session_key = data_blob_talloc(
+ ntlmssp_state, NULL, 16);
+ if (session_key.data == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ SMBsesskeygen_lm_sess_key(
+ lm_session_key.data, zeros,
+ session_key.data);
}
+ dump_data_pw("LM session key:\n", session_key.data,
+ session_key.length);
} else {
DEBUG(10,("ntlmssp_server_auth: Failed to create NTLM session key.\n"));
- session_key = data_blob(NULL, 0);
+ session_key = data_blob_null;
}
} else if (user_session_key.data) {
session_key = user_session_key;
dump_data_pw("unmodified session key:\n", session_key.data, session_key.length);
} else {
DEBUG(10,("ntlmssp_server_auth: Failed to create unmodified session key.\n"));
- session_key = data_blob(NULL, 0);
+ session_key = data_blob_null;
}
- /* With KEY_EXCH, the client supplies the proposed session key,
+ /* With KEY_EXCH, the client supplies the proposed session key,
but encrypts it with the long-term key */
if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCH) {
if (!encrypted_session_key.data || encrypted_session_key.length != 16) {
data_blob_free(&encrypted_session_key);
- DEBUG(1, ("Client-supplied KEY_EXCH session key was of invalid length (%u)!\n",
- encrypted_session_key.length));
+ DEBUG(1, ("Client-supplied KEY_EXCH session key was of invalid length (%u)!\n",
+ (unsigned int)encrypted_session_key.length));
return NT_STATUS_INVALID_PARAMETER;
} else if (!session_key.data || session_key.length != 16) {
- DEBUG(5, ("server session key is invalid (len == %u), cannot do KEY_EXCH!\n",
- session_key.length));
+ DEBUG(5, ("server session key is invalid (len == %u), cannot do KEY_EXCH!\n",
+ (unsigned int)session_key.length));
ntlmssp_state->session_key = session_key;
} else {
dump_data_pw("KEY_EXCH session key (enc):\n", encrypted_session_key.data, encrypted_session_key.length);
- SamOEMhash(encrypted_session_key.data,
- session_key.data,
- encrypted_session_key.length);
- ntlmssp_state->session_key = data_blob_talloc(ntlmssp_state->mem_ctx,
- encrypted_session_key.data,
- encrypted_session_key.length);
- dump_data_pw("KEY_EXCH session key:\n", encrypted_session_key.data,
+ arcfour_crypt_blob(encrypted_session_key.data,
+ encrypted_session_key.length,
+ &session_key);
+ ntlmssp_state->session_key = data_blob_talloc(
+ ntlmssp_state, encrypted_session_key.data,
+ encrypted_session_key.length);
+ dump_data_pw("KEY_EXCH session key:\n", encrypted_session_key.data,
encrypted_session_key.length);
}
} else {
}
if (!NT_STATUS_IS_OK(nt_status)) {
- ntlmssp_state->session_key = data_blob(NULL, 0);
+ ntlmssp_state->session_key = data_blob_null;
} else if (ntlmssp_state->session_key.length) {
nt_status = ntlmssp_sign_init(ntlmssp_state);
}
data_blob_free(&encrypted_session_key);
-
- /* allow arbitarily many authentications */
- ntlmssp_state->expected_state = NTLMSSP_AUTH;
+
+ /* Only one authentication allowed per server state. */
+ ntlmssp_state->expected_state = NTLMSSP_DONE;
return nt_status;
}
/**
* Create an NTLMSSP state machine
- *
+ *
* @param ntlmssp_state NTLMSSP State, allocated by this function
*/
NTSTATUS ntlmssp_server_start(NTLMSSP_STATE **ntlmssp_state)
{
- TALLOC_CTX *mem_ctx;
-
- mem_ctx = talloc_init("NTLMSSP context");
-
- *ntlmssp_state = talloc_zero(mem_ctx, sizeof(**ntlmssp_state));
+ *ntlmssp_state = TALLOC_ZERO_P(NULL, NTLMSSP_STATE);
if (!*ntlmssp_state) {
DEBUG(0,("ntlmssp_server_start: talloc failed!\n"));
- talloc_destroy(mem_ctx);
+ talloc_destroy(*ntlmssp_state);
return NT_STATUS_NO_MEMORY;
}
(*ntlmssp_state)->role = NTLMSSP_SERVER;
- (*ntlmssp_state)->mem_ctx = mem_ctx;
(*ntlmssp_state)->get_challenge = get_challenge;
(*ntlmssp_state)->set_challenge = set_challenge;
(*ntlmssp_state)->may_set_challenge = may_set_challenge;
(*ntlmssp_state)->ref_count = 1;
- (*ntlmssp_state)->neg_flags =
+ (*ntlmssp_state)->neg_flags =
NTLMSSP_NEGOTIATE_128 |
+ NTLMSSP_NEGOTIATE_56 |
+ NTLMSSP_NEGOTIATE_VERSION |
+ NTLMSSP_NEGOTIATE_ALWAYS_SIGN |
NTLMSSP_NEGOTIATE_NTLM |
NTLMSSP_NEGOTIATE_NTLM2 |
NTLMSSP_NEGOTIATE_KEY_EXCH |
- NTLMSSP_NEGOTIATE_SIGN;
+ NTLMSSP_NEGOTIATE_SIGN |
+ NTLMSSP_NEGOTIATE_SEAL;
return NT_STATUS_OK;
}
/**
* 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.
+ * @return Errors or NT_STATUS_OK.
*/
-static NTSTATUS ntlmssp_client_initial(struct ntlmssp_state *ntlmssp_state,
- DATA_BLOB reply, DATA_BLOB *next_request)
+static NTSTATUS ntlmssp_client_initial(struct ntlmssp_state *ntlmssp_state,
+ DATA_BLOB reply, DATA_BLOB *next_request)
{
+ struct NEGOTIATE_MESSAGE negotiate;
+
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 */
- msrpc_gen(next_request, "CddAA",
+ msrpc_gen(ntlmssp_state, next_request, "CddAA",
"NTLMSSP",
NTLMSSP_NEGOTIATE,
ntlmssp_state->neg_flags,
- ntlmssp_state->get_domain(),
+ ntlmssp_state->get_domain(),
ntlmssp_state->get_global_myname());
+ if (DEBUGLEVEL >= 10) {
+ if (NT_STATUS_IS_OK(ntlmssp_pull_NEGOTIATE_MESSAGE(next_request,
+ ntlmssp_state,
+ NULL,
+ &negotiate)))
+ {
+ NDR_PRINT_DEBUG(NEGOTIATE_MESSAGE, &negotiate);
+ }
+ }
+
ntlmssp_state->expected_state = NTLMSSP_CHALLENGE;
return NT_STATUS_MORE_PROCESSING_REQUIRED;
/**
* 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.
+ * @return Errors or NT_STATUS_OK.
*/
-static NTSTATUS ntlmssp_client_challenge(struct ntlmssp_state *ntlmssp_state,
- const DATA_BLOB reply, DATA_BLOB *next_request)
+static NTSTATUS ntlmssp_client_challenge(struct ntlmssp_state *ntlmssp_state,
+ const DATA_BLOB reply, DATA_BLOB *next_request)
{
uint32 chal_flags, ntlmssp_command, unkn1, unkn2;
DATA_BLOB server_domain_blob;
DATA_BLOB challenge_blob;
- DATA_BLOB struct_blob = data_blob(NULL, 0);
+ DATA_BLOB struct_blob = data_blob_null;
char *server_domain;
const char *chal_parse_string;
const char *auth_gen_string;
- DATA_BLOB lm_response = data_blob(NULL, 0);
- DATA_BLOB nt_response = data_blob(NULL, 0);
- DATA_BLOB session_key = data_blob(NULL, 0);
- DATA_BLOB encrypted_session_key = data_blob(NULL, 0);
- NTSTATUS nt_status;
-
- if (!msrpc_parse(&reply, "CdBd",
+ 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;
+ struct CHALLENGE_MESSAGE challenge;
+ struct AUTHENTICATE_MESSAGE authenticate;
+
+ if (!msrpc_parse(ntlmssp_state, &reply, "CdBd",
"NTLMSSP",
- &ntlmssp_command,
+ &ntlmssp_command,
&server_domain_blob,
&chal_flags)) {
DEBUG(1, ("Failed to parse the NTLMSSP Challenge: (#1)\n"));
- dump_data(2, (const char *)reply.data, reply.length);
+ dump_data(2, reply.data, reply.length);
return NT_STATUS_INVALID_PARAMETER;
}
-
+
+ if (DEBUGLEVEL >= 10) {
+ if (NT_STATUS_IS_OK(ntlmssp_pull_CHALLENGE_MESSAGE(&reply,
+ ntlmssp_state,
+ NULL,
+ &challenge)))
+ {
+ NDR_PRINT_DEBUG(CHALLENGE_MESSAGE, &challenge);
+ }
+ }
+
data_blob_free(&server_domain_blob);
DEBUG(3, ("Got challenge flags:\n"));
ntlmssp_handle_neg_flags(ntlmssp_state, chal_flags, lp_client_lanman_auth());
if (ntlmssp_state->unicode) {
- if (chal_flags & NTLMSSP_CHAL_TARGET_INFO) {
+ if (chal_flags & NTLMSSP_NEGOTIATE_TARGET_INFO) {
chal_parse_string = "CdUdbddB";
} else {
chal_parse_string = "CdUdbdd";
}
auth_gen_string = "CdBBUUUBd";
} else {
- if (chal_flags & NTLMSSP_CHAL_TARGET_INFO) {
+ if (chal_flags & NTLMSSP_NEGOTIATE_TARGET_INFO) {
chal_parse_string = "CdAdbddB";
} else {
chal_parse_string = "CdAdbdd";
DEBUG(3, ("NTLMSSP: Set final flags:\n"));
debug_ntlmssp_flags(ntlmssp_state->neg_flags);
- if (!msrpc_parse(&reply, chal_parse_string,
+ if (!msrpc_parse(ntlmssp_state, &reply, chal_parse_string,
"NTLMSSP",
- &ntlmssp_command,
+ &ntlmssp_command,
&server_domain,
&chal_flags,
&challenge_blob, 8,
&unkn1, &unkn2,
&struct_blob)) {
DEBUG(1, ("Failed to parse the NTLMSSP Challenge: (#2)\n"));
- dump_data(2, (const char *)reply.data, reply.length);
+ dump_data(2, reply.data, reply.length);
return NT_STATUS_INVALID_PARAMETER;
}
- ntlmssp_state->server_domain = talloc_strdup(ntlmssp_state->mem_ctx,
- server_domain);
+ ntlmssp_state->server_domain = server_domain;
- SAFE_FREE(server_domain);
if (challenge_blob.length != 8) {
data_blob_free(&struct_blob);
return NT_STATUS_INVALID_PARAMETER;
}
- if (!ntlmssp_state->password) {
- static const uchar zeros[16];
+ if (!ntlmssp_state->nt_hash || !ntlmssp_state->lm_hash) {
+ uchar zeros[16];
/* do nothing - blobs are zero length */
+ ZERO_STRUCT(zeros);
+
/* session key is all zeros */
- session_key = data_blob_talloc(ntlmssp_state->mem_ctx, zeros, 16);
-
+ 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"));
/* TODO: if the remote server is standalone, then we should replace 'domain'
with the server name as supplied above */
-
- if (!SMBNTLMv2encrypt(ntlmssp_state->user,
- ntlmssp_state->domain,
- ntlmssp_state->password, &challenge_blob,
- &struct_blob,
- &lm_response, &nt_response, &session_key)) {
+
+ 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) {
struct MD5Context md5_session_nonce_ctx;
- uchar nt_hash[16];
uchar session_nonce[16];
uchar session_nonce_hash[16];
uchar user_session_key[16];
- E_md4hash(ntlmssp_state->password, nt_hash);
-
- lm_response = data_blob_talloc(ntlmssp_state->mem_ctx, NULL, 24);
+
+ 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);
DEBUG(5, ("NTLMSSP challenge set by NTLM2\n"));
DEBUG(5, ("challenge is: \n"));
- dump_data(5, (const char *)session_nonce_hash, 8);
-
- nt_response = data_blob_talloc(ntlmssp_state->mem_ctx, NULL, 24);
- SMBNTencrypt(ntlmssp_state->password,
- session_nonce_hash,
- nt_response.data);
+ 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->mem_ctx, NULL, 16);
+ session_key = data_blob_talloc(ntlmssp_state, NULL, 16);
- SMBsesskeygen_ntv1(nt_hash, NULL, user_session_key);
+ 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 {
-
-
- uchar lm_hash[16];
- uchar nt_hash[16];
- E_deshash(ntlmssp_state->password, lm_hash);
- E_md4hash(ntlmssp_state->password, nt_hash);
-
/* lanman auth is insecure, it may be disabled */
if (lp_client_lanman_auth()) {
- lm_response = data_blob_talloc(ntlmssp_state->mem_ctx, NULL, 24);
- SMBencrypt(ntlmssp_state->password,challenge_blob.data,
+ 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->mem_ctx, NULL, 24);
- SMBNTencrypt(ntlmssp_state->password,challenge_blob.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->mem_ctx, NULL, 16);
- if ((ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_LM_KEY)
+
+ session_key = data_blob_talloc(ntlmssp_state, NULL, 16);
+ if ((ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_LM_KEY)
&& lp_client_lanman_auth()) {
- SMBsesskeygen_lmv1(lm_hash, lm_response.data,
- session_key.data);
+ 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(nt_hash, NULL, session_key.data);
+ SMBsesskeygen_ntv1(ntlmssp_state->nt_hash, session_key.data);
dump_data_pw("NT session key:\n", session_key.data, session_key.length);
}
}
/* 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);
- SamOEMhash(encrypted_session_key.data, 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->mem_ctx, client_session_key, sizeof(client_session_key));
+ session_key = data_blob_talloc(ntlmssp_state,
+ client_session_key,
+ sizeof(client_session_key));
}
/* this generates the actual auth packet */
- if (!msrpc_gen(next_request, auth_gen_string,
- "NTLMSSP",
- NTLMSSP_AUTH,
+ if (!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->get_global_myname(),
+ ntlmssp_state->domain,
+ ntlmssp_state->user,
+ ntlmssp_state->get_global_myname(),
encrypted_session_key.data, encrypted_session_key.length,
ntlmssp_state->neg_flags)) {
-
+
return NT_STATUS_NO_MEMORY;
}
+ if (DEBUGLEVEL >= 10) {
+ if (NT_STATUS_IS_OK(ntlmssp_pull_AUTHENTICATE_MESSAGE(next_request,
+ ntlmssp_state,
+ NULL,
+ &authenticate)))
+ {
+ NDR_PRINT_DEBUG(AUTHENTICATE_MESSAGE, &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;
- ntlmssp_state->session_key = session_key;
- ntlmssp_state->expected_state = NTLMSSP_UNKNOWN;
+ 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;
}
- return NT_STATUS_MORE_PROCESSING_REQUIRED;
+ return nt_status;
}
NTSTATUS ntlmssp_client_start(NTLMSSP_STATE **ntlmssp_state)
{
- TALLOC_CTX *mem_ctx;
-
- mem_ctx = talloc_init("NTLMSSP Client context");
-
- *ntlmssp_state = talloc_zero(mem_ctx, sizeof(**ntlmssp_state));
+ *ntlmssp_state = TALLOC_ZERO_P(NULL, NTLMSSP_STATE);
if (!*ntlmssp_state) {
DEBUG(0,("ntlmssp_client_start: talloc failed!\n"));
- talloc_destroy(mem_ctx);
+ talloc_destroy(*ntlmssp_state);
return NT_STATUS_NO_MEMORY;
}
(*ntlmssp_state)->role = NTLMSSP_CLIENT;
- (*ntlmssp_state)->mem_ctx = mem_ctx;
-
(*ntlmssp_state)->get_global_myname = global_myname;
(*ntlmssp_state)->get_domain = lp_workgroup;
(*ntlmssp_state)->ref_count = 1;
- (*ntlmssp_state)->neg_flags =
+ (*ntlmssp_state)->neg_flags =
NTLMSSP_NEGOTIATE_128 |
+ NTLMSSP_NEGOTIATE_ALWAYS_SIGN |
NTLMSSP_NEGOTIATE_NTLM |
NTLMSSP_NEGOTIATE_NTLM2 |
NTLMSSP_NEGOTIATE_KEY_EXCH |
- /*
- * 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.
- * */
- NTLMSSP_NEGOTIATE_SIGN |
NTLMSSP_REQUEST_TARGET;
return NT_STATUS_OK;
}
-
git.samba.org / ira / wip.git / blobdiff