handle NLTMSSP, server side
Copyright (C) Andrew Tridgell 2001
- Copyright (C) Andrew Bartlett 2001-2003
- Copyright (C) Andrew Bartlett 2005 (Updated from gensec).
+ 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
*/
#include "includes.h"
-#include "ntlmssp.h"
+#include "../libcli/auth/ntlmssp.h"
+#include "../libcli/auth/ntlmssp_private.h"
#include "../libcli/auth/libcli_auth.h"
#include "../librpc/gen_ndr/ndr_ntlmssp.h"
#include "../libcli/auth/ntlmssp_ndr.h"
+#include "../lib/crypto/md5.h"
+#include "../lib/crypto/arcfour.h"
+#include "../lib/crypto/hmacmd5.h"
static NTSTATUS ntlmssp_client_initial(struct ntlmssp_state *ntlmssp_state,
+ TALLOC_CTX *out_mem_ctx, /* Unused at this time */
DATA_BLOB reply, DATA_BLOB *next_request);
static NTSTATUS ntlmssp_server_negotiate(struct ntlmssp_state *ntlmssp_state,
+ TALLOC_CTX *out_mem_ctx,
const DATA_BLOB in, DATA_BLOB *out);
static NTSTATUS ntlmssp_client_challenge(struct ntlmssp_state *ntlmssp_state,
+ TALLOC_CTX *out_mem_ctx, /* Unused at this time */
const DATA_BLOB reply, DATA_BLOB *next_request);
static NTSTATUS ntlmssp_server_auth(struct ntlmssp_state *ntlmssp_state,
+ TALLOC_CTX *out_mem_ctx,
const DATA_BLOB request, DATA_BLOB *reply);
/**
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, ntlmssp_client_initial},
};
-/**
- * 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)
- DEBUGADD(4, (" NTLMSSP_NEGOTIATE_UNICODE\n"));
- if (neg_flags & NTLMSSP_NEGOTIATE_OEM)
- DEBUGADD(4, (" NTLMSSP_NEGOTIATE_OEM\n"));
- if (neg_flags & NTLMSSP_REQUEST_TARGET)
- DEBUGADD(4, (" NTLMSSP_REQUEST_TARGET\n"));
- if (neg_flags & NTLMSSP_NEGOTIATE_SIGN)
- DEBUGADD(4, (" NTLMSSP_NEGOTIATE_SIGN\n"));
- if (neg_flags & NTLMSSP_NEGOTIATE_SEAL)
- DEBUGADD(4, (" NTLMSSP_NEGOTIATE_SEAL\n"));
- 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)
- DEBUGADD(4, (" NTLMSSP_NEGOTIATE_NETWARE\n"));
- if (neg_flags & NTLMSSP_NEGOTIATE_NTLM)
- DEBUGADD(4, (" NTLMSSP_NEGOTIATE_NTLM\n"));
- 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)
- DEBUGADD(4, (" NTLMSSP_NEGOTIATE_ALWAYS_SIGN\n"));
- 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_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)
- DEBUGADD(4, (" NTLMSSP_NEGOTIATE_KEY_EXCH\n"));
- if (neg_flags & NTLMSSP_NEGOTIATE_56)
- DEBUGADD(4, (" NTLMSSP_NEGOTIATE_56\n"));
-}
-
/**
* Default challenge generation code.
*
*
*/
NTSTATUS ntlmssp_set_hashes(struct ntlmssp_state *ntlmssp_state,
- const unsigned char lm_hash[16],
- const unsigned char nt_hash[16])
+ const uint8_t lm_hash[16],
+ const uint8_t nt_hash[16])
{
- ntlmssp_state->lm_hash = (unsigned char *)
+ ntlmssp_state->lm_hash = (uint8_t *)
TALLOC_MEMDUP(ntlmssp_state, lm_hash, 16);
- ntlmssp_state->nt_hash = (unsigned char *)
+ ntlmssp_state->nt_hash = (uint8_t *)
TALLOC_MEMDUP(ntlmssp_state, nt_hash, 16);
if (!ntlmssp_state->lm_hash || !ntlmssp_state->nt_hash) {
TALLOC_FREE(ntlmssp_state->lm_hash);
ntlmssp_state->lm_hash = NULL;
ntlmssp_state->nt_hash = NULL;
} else {
- unsigned char lm_hash[16];
- unsigned char nt_hash[16];
+ uint8_t lm_hash[16];
+ uint8_t nt_hash[16];
E_deshash(password, lm_hash);
E_md4hash(password, nt_hash);
return NT_STATUS_OK;
}
-/**
- * Set a workstation on an NTLMSSP context - ensures it is talloc()ed
- *
- */
-NTSTATUS ntlmssp_set_workstation(struct ntlmssp_state *ntlmssp_state, const char *workstation)
-{
- ntlmssp_state->workstation = talloc_strdup(ntlmssp_state, workstation);
- if (!ntlmssp_state->workstation) {
- return NT_STATUS_NO_MEMORY;
- }
- return NT_STATUS_OK;
-}
-
/**
* Request features 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 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) {
NTSTATUS ntlmssp_update(struct ntlmssp_state *ntlmssp_state,
const DATA_BLOB input, DATA_BLOB *out)
{
- uint32 ntlmssp_command;
+ uint32_t ntlmssp_command;
int i;
if (ntlmssp_state->expected_state == NTLMSSP_DONE) {
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, input, out);
+ return ntlmssp_callbacks[i].fn(ntlmssp_state, ntlmssp_state, input, out);
}
}
return NT_STATUS_INVALID_PARAMETER;
}
-/**
- * End an NTLMSSP state machine
- *
- * @param ntlmssp_state NTLMSSP State, free()ed by this function
- */
-
-void ntlmssp_end(struct ntlmssp_state **ntlmssp_state)
-{
- data_blob_free(&(*ntlmssp_state)->chal);
- data_blob_free(&(*ntlmssp_state)->lm_resp);
- data_blob_free(&(*ntlmssp_state)->nt_resp);
- TALLOC_FREE(*ntlmssp_state);
-
- *ntlmssp_state = NULL;
- return;
-}
-
-/**
- * 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
- * @return The 'target name' string.
- */
-
-static const char *ntlmssp_target_name(struct ntlmssp_state *ntlmssp_state,
- uint32 neg_flags, uint32 *chal_flags)
-{
- if (neg_flags & NTLMSSP_REQUEST_TARGET) {
- *chal_flags |= NTLMSSP_NEGOTIATE_TARGET_INFO;
- *chal_flags |= NTLMSSP_REQUEST_TARGET;
- if (ntlmssp_state->server.is_standalone) {
- *chal_flags |= NTLMSSP_TARGET_TYPE_SERVER;
- return ntlmssp_state->server.netbios_name;
- } else {
- *chal_flags |= NTLMSSP_TARGET_TYPE_DOMAIN;
- return ntlmssp_state->server.netbios_domain;
- };
- } else {
- return "";
- }
-}
-
-static void ntlmssp_handle_neg_flags(struct ntlmssp_state *ntlmssp_state,
- 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->unicode = True;
- } else {
- ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_UNICODE;
- ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_OEM;
- ntlmssp_state->unicode = False;
- }
-
- if ((neg_flags & NTLMSSP_NEGOTIATE_LM_KEY) && allow_lm) {
- /* other end forcing us to use LM */
- ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_LM_KEY;
- ntlmssp_state->use_ntlmv2 = False;
- } else {
- 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_NTLM2)) {
- ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_NTLM2;
- }
-
- if (!(neg_flags & NTLMSSP_NEGOTIATE_128)) {
- 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(struct 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.
+ * @param ntlmssp_state NTLMSSP state
+ * @param out_mem_ctx Memory context for *out
+ * @param in The request, as a DATA_BLOB. reply.data must be NULL
+ * @param out The reply, as an allocated DATA_BLOB, caller to free.
+ * @return Errors or MORE_PROCESSING_REQUIRED if (normal) a reply is required.
*/
static NTSTATUS ntlmssp_server_negotiate(struct ntlmssp_state *ntlmssp_state,
+ TALLOC_CTX *out_mem_ctx,
const DATA_BLOB request, DATA_BLOB *reply)
{
DATA_BLOB struct_blob;
- uint32 neg_flags = 0;
- uint32 ntlmssp_command, chal_flags;
+ uint32_t neg_flags = 0;
+ uint32_t ntlmssp_command, chal_flags;
uint8_t cryptkey[8];
const char *target_name;
- struct NEGOTIATE_MESSAGE negotiate;
- struct CHALLENGE_MESSAGE challenge;
NTSTATUS status;
/* parse the NTLMSSP packet */
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);
+ struct NEGOTIATE_MESSAGE *negotiate = talloc(
+ ntlmssp_state, struct NEGOTIATE_MESSAGE);
+ if (negotiate != NULL) {
+ status = ntlmssp_pull_NEGOTIATE_MESSAGE(
+ &request, negotiate, negotiate);
+ if (NT_STATUS_IS_OK(status)) {
+ NDR_PRINT_DEBUG(NEGOTIATE_MESSAGE,
+ negotiate);
+ }
+ TALLOC_FREE(negotiate);
}
}
}
- ntlmssp_handle_neg_flags(ntlmssp_state, neg_flags, lp_lanman_auth());
+ ntlmssp_handle_neg_flags(ntlmssp_state, neg_flags, ntlmssp_state->allow_lm_key);
/* Ask our caller what challenge they would like in the packet */
status = ntlmssp_state->get_challenge(ntlmssp_state, cryptkey);
if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(1, ("ntlmssp_server_negotiate: backend doesn't give a challenge: %s\n",
+ nt_errstr(status)));
return status;
}
}
{
- /* Marshel the packet in the right format, be it unicode or ASCII */
+ /* Marshal the packet in the right format, be it unicode or ASCII */
const char *gen_string;
+ DATA_BLOB version_blob = data_blob_null;
+
+ if (chal_flags & NTLMSSP_NEGOTIATE_VERSION) {
+ enum ndr_err_code err;
+ struct VERSION vers;
+
+ /* "What Windows returns" as a version number. */
+ ZERO_STRUCT(vers);
+ vers.ProductMajorVersion = NTLMSSP_WINDOWS_MAJOR_VERSION_6;
+ vers.ProductMinorVersion = NTLMSSP_WINDOWS_MINOR_VERSION_1;
+ vers.ProductBuild = 0;
+ vers.NTLMRevisionCurrent = NTLMSSP_REVISION_W2K3;
+
+ err = ndr_push_struct_blob(&version_blob,
+ ntlmssp_state,
+ &vers,
+ (ndr_push_flags_fn_t)ndr_push_VERSION);
+
+ if (!NDR_ERR_CODE_IS_SUCCESS(err)) {
+ data_blob_free(&struct_blob);
+ return NT_STATUS_NO_MEMORY;
+ }
+ }
+
if (ntlmssp_state->unicode) {
- gen_string = "CdUdbddB";
+ gen_string = "CdUdbddBb";
} else {
- gen_string = "CdAdbddB";
+ gen_string = "CdAdbddBb";
}
- msrpc_gen(ntlmssp_state, reply, gen_string,
- "NTLMSSP",
- NTLMSSP_CHALLENGE,
- target_name,
- chal_flags,
- cryptkey, 8,
- 0, 0,
- struct_blob.data, struct_blob.length);
+ msrpc_gen(out_mem_ctx, reply, gen_string,
+ "NTLMSSP",
+ NTLMSSP_CHALLENGE,
+ target_name,
+ chal_flags,
+ cryptkey, 8,
+ 0, 0,
+ struct_blob.data, struct_blob.length,
+ version_blob.data, version_blob.length);
+
+ data_blob_free(&version_blob);
if (DEBUGLEVEL >= 10) {
- if (NT_STATUS_IS_OK(ntlmssp_pull_CHALLENGE_MESSAGE(reply,
- ntlmssp_state,
- NULL,
- &challenge)))
- {
- NDR_PRINT_DEBUG(CHALLENGE_MESSAGE, &challenge);
+ struct CHALLENGE_MESSAGE *challenge = talloc(
+ ntlmssp_state, struct CHALLENGE_MESSAGE);
+ if (challenge != NULL) {
+ 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);
}
}
}
return NT_STATUS_MORE_PROCESSING_REQUIRED;
}
+struct ntlmssp_server_auth_state {
+ DATA_BLOB user_session_key;
+ DATA_BLOB lm_session_key;
+ /* internal variables used by KEY_EXCH (client-supplied user session key */
+ DATA_BLOB encrypted_session_key;
+ bool doing_ntlm2;
+ /* internal variables used by NTLM2 */
+ uint8_t session_nonce[16];
+};
+
/**
* 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.
*/
-static NTSTATUS ntlmssp_server_auth(struct ntlmssp_state *ntlmssp_state,
- const DATA_BLOB request, DATA_BLOB *reply)
+static NTSTATUS ntlmssp_server_preauth(struct ntlmssp_state *ntlmssp_state,
+ struct ntlmssp_server_auth_state *state,
+ const DATA_BLOB request)
{
- 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 = NT_STATUS_OK;
- struct AUTHENTICATE_MESSAGE authenticate;
-
- /* used by NTLM2 */
- bool doing_ntlm2 = False;
+ uint32_t ntlmssp_command, auth_flags;
+ NTSTATUS nt_status;
- uchar session_nonce[16];
- uchar session_nonce_hash[16];
+ uint8_t session_nonce_hash[16];
const char *parse_string;
- /* parse the NTLMSSP packet */
- *reply = data_blob_null;
-
#if 0
file_save("ntlmssp_auth.dat", request.data, request.length);
#endif
parse_string = "CdBBAAABd";
}
+ /* zero these out */
+ data_blob_free(&ntlmssp_state->session_key);
data_blob_free(&ntlmssp_state->lm_resp);
data_blob_free(&ntlmssp_state->nt_resp);
ntlmssp_state->user = NULL;
ntlmssp_state->domain = NULL;
- ntlmssp_state->workstation = NULL;
+ ntlmssp_state->client.netbios_name = NULL;
/* now the NTLMSSP encoded auth hashes */
if (!msrpc_parse(ntlmssp_state, &request, parse_string,
&ntlmssp_state->nt_resp,
&ntlmssp_state->domain,
&ntlmssp_state->user,
- &ntlmssp_state->workstation,
- &encrypted_session_key,
+ &ntlmssp_state->client.netbios_name,
+ &state->encrypted_session_key,
&auth_flags)) {
+ DEBUG(10, ("ntlmssp_server_auth: failed to parse NTLMSSP (nonfatal):\n"));
+ dump_data(10, request.data, request.length);
+
+ /* zero this out */
+ data_blob_free(&state->encrypted_session_key);
auth_flags = 0;
/* Try again with a shorter string (Win9X truncates this packet) */
&ntlmssp_state->nt_resp,
&ntlmssp_state->domain,
&ntlmssp_state->user,
- &ntlmssp_state->workstation)) {
+ &ntlmssp_state->client.netbios_name)) {
DEBUG(1, ("ntlmssp_server_auth: failed to parse NTLMSSP (tried both formats):\n"));
dump_data(2, request.data, request.length);
}
}
+ talloc_steal(state, state->encrypted_session_key.data);
+
if (auth_flags)
- ntlmssp_handle_neg_flags(ntlmssp_state, auth_flags, lp_lanman_auth());
+ ntlmssp_handle_neg_flags(ntlmssp_state, auth_flags, ntlmssp_state->allow_lm_key);
if (DEBUGLEVEL >= 10) {
- if (NT_STATUS_IS_OK(ntlmssp_pull_AUTHENTICATE_MESSAGE(&request,
- ntlmssp_state,
- NULL,
- &authenticate)))
- {
- NDR_PRINT_DEBUG(AUTHENTICATE_MESSAGE, &authenticate);
+ struct AUTHENTICATE_MESSAGE *authenticate = talloc(
+ ntlmssp_state, struct AUTHENTICATE_MESSAGE);
+ if (authenticate != NULL) {
+ NTSTATUS status;
+ authenticate->NegotiateFlags = auth_flags;
+ status = ntlmssp_pull_AUTHENTICATE_MESSAGE(
+ &request, authenticate, authenticate);
+ if (NT_STATUS_IS_OK(status)) {
+ NDR_PRINT_DEBUG(AUTHENTICATE_MESSAGE,
+ authenticate);
+ }
+ TALLOC_FREE(authenticate);
}
}
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));
+ ntlmssp_state->user, ntlmssp_state->domain,
+ ntlmssp_state->client.netbios_name,
+ (unsigned long)ntlmssp_state->lm_resp.length,
+ (unsigned long)ntlmssp_state->nt_resp.length));
#if 0
file_save("nthash1.dat", &ntlmssp_state->nt_resp.data, &ntlmssp_state->nt_resp.length);
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);
+ state->doing_ntlm2 = true;
- doing_ntlm2 = True;
+ memcpy(state->session_nonce, ntlmssp_state->internal_chal.data, 8);
+ memcpy(&state->session_nonce[8], ntlmssp_state->lm_resp.data, 8);
- memcpy(session_nonce, ntlmssp_state->internal_chal.data, 8);
- memcpy(&session_nonce[8], ntlmssp_state->lm_resp.data, 8);
+ SMB_ASSERT(ntlmssp_state->internal_chal.data && ntlmssp_state->internal_chal.length == 8);
MD5Init(&md5_session_nonce_ctx);
- MD5Update(&md5_session_nonce_ctx, session_nonce, 16);
+ MD5Update(&md5_session_nonce_ctx, state->session_nonce, 16);
MD5Final(session_nonce_hash, &md5_session_nonce_ctx);
ntlmssp_state->chal = data_blob_talloc(
/* We changed the effective challenge - set it */
if (!NT_STATUS_IS_OK(nt_status = ntlmssp_state->set_challenge(ntlmssp_state, &ntlmssp_state->chal))) {
- data_blob_free(&encrypted_session_key);
return nt_status;
}
ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_LM_KEY;
}
}
+ return NT_STATUS_OK;
+}
- /*
- * Note we don't check here for NTLMv2 auth settings. If NTLMv2 auth
- * is required (by "ntlm auth = no" and "lm auth = no" being set in the
- * smb.conf file) and no NTLMv2 response was sent then the password check
- * will fail here. JRA.
- */
-
- /* Finally, actually ask if the password is OK */
+/**
+ * Next state function for the Authenticate packet
+ * (after authentication - figures out the session keys etc)
+ *
+ * @param ntlmssp_state NTLMSSP State
+ * @return Errors or NT_STATUS_OK.
+ */
- 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;
- }
+static NTSTATUS ntlmssp_server_postauth(struct ntlmssp_state *ntlmssp_state,
+ struct ntlmssp_server_auth_state *state)
+{
+ DATA_BLOB user_session_key = state->user_session_key;
+ DATA_BLOB lm_session_key = state->lm_session_key;
+ NTSTATUS nt_status;
+ DATA_BLOB session_key = data_blob(NULL, 0);
dump_data_pw("NT session key:\n", user_session_key.data, user_session_key.length);
dump_data_pw("LM first-8:\n", lm_session_key.data, lm_session_key.length);
/* Handle the different session key derivation for NTLM2 */
- if (doing_ntlm2) {
+ if (state->doing_ntlm2) {
if (user_session_key.data && user_session_key.length == 16) {
session_key = data_blob_talloc(ntlmssp_state,
NULL, 16);
- hmac_md5(user_session_key.data, session_nonce,
- sizeof(session_nonce), session_key.data);
+ hmac_md5(user_session_key.data, state->session_nonce,
+ sizeof(state->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);
DEBUG(10,("ntlmssp_server_auth: Failed to create NTLM2 session key.\n"));
session_key = data_blob_null;
}
- } else if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_LM_KEY) {
+ } else if ((ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_LM_KEY)
+ /* Ensure we can never get here on NTLMv2 */
+ && (ntlmssp_state->nt_resp.length == 0 || ntlmssp_state->nt_resp.length == 24)) {
+
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,
session_key.data);
DEBUG(10,("ntlmssp_server_auth: Created NTLM session key.\n"));
} else {
- static const uint8 zeros[24] = {0, };
+ static const uint8_t zeros[24] = {0, };
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);
+ SMBsesskeygen_lm_sess_key(zeros, zeros,
+ 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 {
+ /* LM Key not selected */
+ ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_LM_KEY;
+
DEBUG(10,("ntlmssp_server_auth: Failed to create NTLM session key.\n"));
session_key = data_blob_null;
}
+
} else if (user_session_key.data) {
session_key = user_session_key;
DEBUG(10,("ntlmssp_server_auth: Using unmodified nt session key.\n"));
dump_data_pw("unmodified session key:\n", session_key.data, session_key.length);
+
+ /* LM Key not selected */
+ ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_LM_KEY;
+
} else if (lm_session_key.data) {
+ /* Very weird to have LM key, but no user session key, but anyway.. */
session_key = lm_session_key;
DEBUG(10,("ntlmssp_server_auth: Using unmodified lm session key.\n"));
dump_data_pw("unmodified session key:\n", session_key.data, session_key.length);
+
+ /* LM Key not selected */
+ ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_LM_KEY;
+
} else {
DEBUG(10,("ntlmssp_server_auth: Failed to create unmodified session key.\n"));
session_key = data_blob_null;
+
+ /* LM Key not selected */
+ ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_LM_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);
+ if (!state->encrypted_session_key.data
+ || state->encrypted_session_key.length != 16) {
+ data_blob_free(&state->encrypted_session_key);
DEBUG(1, ("Client-supplied KEY_EXCH session key was of invalid length (%u)!\n",
- (unsigned int)encrypted_session_key.length));
+ (unsigned)state->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",
(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);
- 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);
+ dump_data_pw("KEY_EXCH session key (enc):\n",
+ state->encrypted_session_key.data,
+ state->encrypted_session_key.length);
+ arcfour_crypt(state->encrypted_session_key.data,
+ session_key.data,
+ state->encrypted_session_key.length);
+ ntlmssp_state->session_key = data_blob_talloc(ntlmssp_state,
+ state->encrypted_session_key.data,
+ state->encrypted_session_key.length);
+ dump_data_pw("KEY_EXCH session key:\n",
+ state->encrypted_session_key.data,
+ state->encrypted_session_key.length);
+ talloc_free(session_key.data);
}
} else {
ntlmssp_state->session_key = session_key;
}
- if (!NT_STATUS_IS_OK(nt_status)) {
- ntlmssp_state->session_key = data_blob_null;
- } else if (ntlmssp_state->session_key.length) {
+ if (ntlmssp_state->session_key.length) {
nt_status = ntlmssp_sign_init(ntlmssp_state);
}
- data_blob_free(&encrypted_session_key);
-
- /* Only one authentication allowed per server state. */
ntlmssp_state->expected_state = NTLMSSP_DONE;
return nt_status;
}
+
+/**
+ * Next state function for the Authenticate packet
+ *
+ * @param gensec_security GENSEC state
+ * @param out_mem_ctx Memory context for *out
+ * @param in The request, as a DATA_BLOB. reply.data must be NULL
+ * @param out The reply, as an allocated DATA_BLOB, caller to free.
+ * @return Errors or NT_STATUS_OK if authentication sucessful
+ */
+
+static NTSTATUS ntlmssp_server_auth(struct ntlmssp_state *ntlmssp_state,
+ TALLOC_CTX *out_mem_ctx,
+ const DATA_BLOB in, DATA_BLOB *out)
+{
+ struct ntlmssp_server_auth_state *state;
+ NTSTATUS nt_status;
+
+ /* zero the outbound NTLMSSP packet */
+ *out = data_blob_null;
+
+ state = talloc_zero(ntlmssp_state, struct ntlmssp_server_auth_state);
+ if (state == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ nt_status = ntlmssp_server_preauth(ntlmssp_state, state, in);
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ TALLOC_FREE(state);
+ return nt_status;
+ }
+
+ /*
+ * Note we don't check here for NTLMv2 auth settings. If NTLMv2 auth
+ * is required (by "ntlm auth = no" and "lm auth = no" being set in the
+ * smb.conf file) and no NTLMv2 response was sent then the password check
+ * will fail here. JRA.
+ */
+
+ /* Finally, actually ask if the password is OK */
+ nt_status = ntlmssp_state->check_password(ntlmssp_state,
+ &state->user_session_key,
+ &state->lm_session_key);
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ TALLOC_FREE(state);
+ return nt_status;
+ }
+
+ /* When we get more async in the auth code behind
+ ntlmssp_state->check_password, the ntlmssp_server_postpath
+ can be done in a callback */
+
+ nt_status = ntlmssp_server_postauth(ntlmssp_state, state);
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ TALLOC_FREE(state);
+ return nt_status;
+ }
+
+ TALLOC_FREE(state);
+ return NT_STATUS_OK;
+}
+
/**
* Create an NTLMSSP state machine
*
ntlmssp_state->expected_state = NTLMSSP_NEGOTIATE;
+ ntlmssp_state->allow_lm_key = lp_lanman_auth();
+
ntlmssp_state->neg_flags =
NTLMSSP_NEGOTIATE_128 |
NTLMSSP_NEGOTIATE_56 |
return NT_STATUS_NO_MEMORY;
}
- /* TODO: remove this */
- ntlmssp_state->get_global_myname = global_myname;
- ntlmssp_state->get_domain = lp_workgroup;
-
*_ntlmssp_state = ntlmssp_state;
return NT_STATUS_OK;
}
*/
static NTSTATUS ntlmssp_client_initial(struct ntlmssp_state *ntlmssp_state,
+ TALLOC_CTX *out_mem_ctx, /* Unused at this time */
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->client.netbios_name);
if (DEBUGLEVEL >= 10) {
- if (NT_STATUS_IS_OK(ntlmssp_pull_NEGOTIATE_MESSAGE(next_request,
- ntlmssp_state,
- NULL,
- &negotiate)))
- {
- NDR_PRINT_DEBUG(NEGOTIATE_MESSAGE, &negotiate);
+ struct NEGOTIATE_MESSAGE *negotiate = talloc(
+ talloc_tos(), struct NEGOTIATE_MESSAGE);
+ if (negotiate != NULL) {
+ NTSTATUS status;
+ status = ntlmssp_pull_NEGOTIATE_MESSAGE(
+ next_request, negotiate, negotiate);
+ if (NT_STATUS_IS_OK(status)) {
+ NDR_PRINT_DEBUG(NEGOTIATE_MESSAGE,
+ negotiate);
+ }
+ TALLOC_FREE(negotiate);
}
}
*/
static NTSTATUS ntlmssp_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 chal_flags, ntlmssp_command, unkn1, unkn2;
+ uint32_t chal_flags, ntlmssp_command, unkn1, unkn2;
DATA_BLOB server_domain_blob;
DATA_BLOB challenge_blob;
DATA_BLOB struct_blob = 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 (ntlmssp_state->use_ccache) {
struct wbcCredentialCacheParams params;
}
if (DEBUGLEVEL >= 10) {
- if (NT_STATUS_IS_OK(ntlmssp_pull_CHALLENGE_MESSAGE(&reply,
- ntlmssp_state,
- NULL,
- &challenge)))
- {
- NDR_PRINT_DEBUG(CHALLENGE_MESSAGE, &challenge);
+ 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);
}
}
}
} else if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_NTLM2) {
struct MD5Context md5_session_nonce_ctx;
- uchar session_nonce[16];
- uchar session_nonce_hash[16];
- uchar user_session_key[16];
+ 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);
the password-derived key */
if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCH) {
/* Make up a new session key */
- uint8 client_session_key[16];
+ 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 */
}
if (DEBUGLEVEL >= 10) {
- if (NT_STATUS_IS_OK(ntlmssp_pull_AUTHENTICATE_MESSAGE(next_request,
- ntlmssp_state,
- NULL,
- &authenticate)))
- {
- NDR_PRINT_DEBUG(AUTHENTICATE_MESSAGE, &authenticate);
+ 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);
}
}
return NT_STATUS_NO_MEMORY;
}
- /* TODO: remove this */
- ntlmssp_state->get_global_myname = global_myname;
- ntlmssp_state->get_domain = lp_workgroup;
-
*_ntlmssp_state = ntlmssp_state;
return NT_STATUS_OK;
}
git.samba.org / abartlet / samba.git / .git / blobdiff