int credssp_ntlmssp_client_init(rdpCredssp* credssp)
{
freerdp* instance;
NTLMSSP* ntlmssp = credssp->ntlmssp;
rdpSettings* settings = credssp->transport->settings;
instance = (freerdp*) settings->instance;
if ((settings->password == NULL) || (settings->username == NULL))
{
if (instance->Authenticate)
{
boolean proceed = instance->Authenticate(instance,
&settings->username, &settings->password, &settings->domain);
if (!proceed)
return 0;
}
}
if (settings->ntlm_version == 2)
ntlmssp->ntlm_v2 = 1;
ntlmssp_set_password(ntlmssp, settings->password);
ntlmssp_set_username(ntlmssp, settings->username);
if (ntlmssp->ntlm_v2)
{
ntlmssp_set_workstation(ntlmssp, "WORKSTATION");
}
if (settings->domain != NULL)
{
if (strlen(settings->domain) > 0)
ntlmssp_set_domain(ntlmssp, settings->domain);
}
else
{
ntlmssp_set_domain(ntlmssp, NULL);
}
ntlmssp_generate_client_challenge(ntlmssp);
ntlmssp_generate_random_session_key(ntlmssp);
ntlmssp_generate_exported_session_key(ntlmssp);
return 1;
}
static NTSTATUS ntlmssp_server_auth(struct ntlmssp_state *ntlmssp_state,
const DATA_BLOB request, DATA_BLOB *reply)
{
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;
/* used by NTLM2 */
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;
#if 0
file_save("ntlmssp_auth.dat", request.data, request.length);
#endif
if (ntlmssp_state->unicode) {
parse_string = "CdBBUUUBd";
} else {
parse_string = "CdBBAAABd";
}
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;
/* now the NTLMSSP encoded auth hashes */
if (!msrpc_parse(&request, parse_string,
"NTLMSSP",
&ntlmssp_command,
&ntlmssp_state->lm_resp,
&ntlmssp_state->nt_resp,
&domain,
&user,
&workstation,
&encrypted_session_key,
&auth_flags)) {
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";
} else {
parse_string = "CdBBAAA";
}
/* now the NTLMSSP encoded auth hashes */
if (!msrpc_parse(&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 (tried both formats):\n"));
dump_data(2, request.data, request.length);
SAFE_FREE(domain);
SAFE_FREE(user);
SAFE_FREE(workstation);
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;
}
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));
#if 0
file_save("nthash1.dat", &ntlmssp_state->nt_resp.data, &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
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);
/* LM response is no longer useful */
data_blob_free(&ntlmssp_state->lm_resp);
/* 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;
}
/* LM Key is incompatible. */
ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_LM_KEY;
}
}
/*
* 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 */
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;
}
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 (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,
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;
}
} 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);
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"));
} else {
uint8 zeros[24];
ZERO_STRUCT(zeros);
session_key = data_blob_talloc(
ntlmssp_state->mem_ctx, 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;
}
} 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);
} else if (lm_session_key.data) {
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);
} else {
DEBUG(10,("ntlmssp_server_auth: Failed to create unmodified session key.\n"));
session_key = data_blob_null;
}
/* 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",
(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",
(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,
encrypted_session_key.length);
}
} 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) {
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;
}
tbool rpch_in_send_bind(rdpRpch* rpch)
{
STREAM* ntlm_stream = stream_new(0xFFFF);
STREAM* pdu;
int bytes;
rpcconn_bind_hdr_t* bind_pdu;
LLOGLN(10, ("rpch_in_send_bind:"));
rpch->ntlmssp = ntlmssp_new();
rpch->ntlmssp->ntlm_v2 = true;
ntlmssp_set_username(rpch->ntlmssp, rpch->settings->tsg_username);
ntlmssp_set_password(rpch->ntlmssp, rpch->settings->tsg_password);
ntlmssp_set_domain(rpch->ntlmssp, rpch->settings->tsg_domain);
ntlmssp_set_workstation(rpch->ntlmssp, "WORKSTATION"); /* TODO insert proper w.name */
ntlmssp_send(rpch->ntlmssp, ntlm_stream);
bind_pdu = (rpcconn_bind_hdr_t*) xmalloc(sizeof(rpcconn_bind_hdr_t));
bind_pdu->rpc_vers = 5;
bind_pdu->rpc_vers_minor = 0;
bind_pdu->PTYPE = PTYPE_BIND;
bind_pdu->pfc_flags = PFC_FIRST_FRAG | PFC_LAST_FRAG | PFC_PENDING_CANCEL | PFC_CONC_MPX;
bind_pdu->packed_drep[0] = 0x10;
bind_pdu->packed_drep[1] = 0x00;
bind_pdu->packed_drep[2] = 0x00;
bind_pdu->packed_drep[3] = 0x00;
bytes = (int) (ntlm_stream->p - ntlm_stream->data);
bind_pdu->frag_length = 124 + bytes;
bind_pdu->auth_length = bytes;
bind_pdu->call_id = 2;
bind_pdu->max_xmit_frag = 0x0FF8;
bind_pdu->max_recv_frag = 0x0FF8;
bind_pdu->assoc_group_id = 0;
bind_pdu->p_context_elem.n_context_elem = 2;
bind_pdu->p_context_elem.reserved = 0;
bind_pdu->p_context_elem.reserved2 = 0;
bind_pdu->p_context_elem.p_cont_elem = (p_cont_elem_t*) xmalloc(sizeof(p_cont_elem_t) * bind_pdu->p_context_elem.n_context_elem);
bind_pdu->p_context_elem.p_cont_elem[0].p_cont_id = 0;
bind_pdu->p_context_elem.p_cont_elem[0].n_transfer_syn = 1;
bind_pdu->p_context_elem.p_cont_elem[0].reserved = 0;
bind_pdu->p_context_elem.p_cont_elem[0].abstract_syntax.if_uuid.time_low = 0x44e265dd;
bind_pdu->p_context_elem.p_cont_elem[0].abstract_syntax.if_uuid.time_mid = 0x7daf;
bind_pdu->p_context_elem.p_cont_elem[0].abstract_syntax.if_uuid.time_hi_and_version = 0x42cd;
bind_pdu->p_context_elem.p_cont_elem[0].abstract_syntax.if_uuid.clock_seq_hi_and_reserved = 0x85;
bind_pdu->p_context_elem.p_cont_elem[0].abstract_syntax.if_uuid.clock_seq_low = 0x60;
bind_pdu->p_context_elem.p_cont_elem[0].abstract_syntax.if_uuid.node[0] = 0x3c;
bind_pdu->p_context_elem.p_cont_elem[0].abstract_syntax.if_uuid.node[1] = 0xdb;
bind_pdu->p_context_elem.p_cont_elem[0].abstract_syntax.if_uuid.node[2] = 0x6e;
bind_pdu->p_context_elem.p_cont_elem[0].abstract_syntax.if_uuid.node[3] = 0x7a;
bind_pdu->p_context_elem.p_cont_elem[0].abstract_syntax.if_uuid.node[4] = 0x27;
bind_pdu->p_context_elem.p_cont_elem[0].abstract_syntax.if_uuid.node[5] = 0x29;
bind_pdu->p_context_elem.p_cont_elem[0].abstract_syntax.if_version = 0x00030001;
bind_pdu->p_context_elem.p_cont_elem[0].transfer_syntaxes = xmalloc(sizeof(p_syntax_id_t));
bind_pdu->p_context_elem.p_cont_elem[0].transfer_syntaxes[0].if_uuid.time_low = 0x8a885d04;
bind_pdu->p_context_elem.p_cont_elem[0].transfer_syntaxes[0].if_uuid.time_mid = 0x1ceb;
bind_pdu->p_context_elem.p_cont_elem[0].transfer_syntaxes[0].if_uuid.time_hi_and_version = 0x11c9;
bind_pdu->p_context_elem.p_cont_elem[0].transfer_syntaxes[0].if_uuid.clock_seq_hi_and_reserved = 0x9f;
bind_pdu->p_context_elem.p_cont_elem[0].transfer_syntaxes[0].if_uuid.clock_seq_low = 0xe8;
bind_pdu->p_context_elem.p_cont_elem[0].transfer_syntaxes[0].if_uuid.node[0] = 0x08;
bind_pdu->p_context_elem.p_cont_elem[0].transfer_syntaxes[0].if_uuid.node[1] = 0x00;
bind_pdu->p_context_elem.p_cont_elem[0].transfer_syntaxes[0].if_uuid.node[2] = 0x2b;
bind_pdu->p_context_elem.p_cont_elem[0].transfer_syntaxes[0].if_uuid.node[3] = 0x10;
bind_pdu->p_context_elem.p_cont_elem[0].transfer_syntaxes[0].if_uuid.node[4] = 0x48;
bind_pdu->p_context_elem.p_cont_elem[0].transfer_syntaxes[0].if_uuid.node[5] = 0x60;
bind_pdu->p_context_elem.p_cont_elem[0].transfer_syntaxes[0].if_version = 0x00000002;
bind_pdu->p_context_elem.p_cont_elem[1].p_cont_id = 1;
bind_pdu->p_context_elem.p_cont_elem[1].n_transfer_syn = 1;
bind_pdu->p_context_elem.p_cont_elem[1].reserved = 0;
bind_pdu->p_context_elem.p_cont_elem[1].abstract_syntax.if_uuid.time_low = 0x44e265dd;
bind_pdu->p_context_elem.p_cont_elem[1].abstract_syntax.if_uuid.time_mid = 0x7daf;
bind_pdu->p_context_elem.p_cont_elem[1].abstract_syntax.if_uuid.time_hi_and_version = 0x42cd;
bind_pdu->p_context_elem.p_cont_elem[1].abstract_syntax.if_uuid.clock_seq_hi_and_reserved = 0x85;
bind_pdu->p_context_elem.p_cont_elem[1].abstract_syntax.if_uuid.clock_seq_low = 0x60;
bind_pdu->p_context_elem.p_cont_elem[1].abstract_syntax.if_uuid.node[0] = 0x3c;
bind_pdu->p_context_elem.p_cont_elem[1].abstract_syntax.if_uuid.node[1] = 0xdb;
bind_pdu->p_context_elem.p_cont_elem[1].abstract_syntax.if_uuid.node[2] = 0x6e;
bind_pdu->p_context_elem.p_cont_elem[1].abstract_syntax.if_uuid.node[3] = 0x7a;
bind_pdu->p_context_elem.p_cont_elem[1].abstract_syntax.if_uuid.node[4] = 0x27;
bind_pdu->p_context_elem.p_cont_elem[1].abstract_syntax.if_uuid.node[5] = 0x29;
bind_pdu->p_context_elem.p_cont_elem[1].abstract_syntax.if_version = 0x00030001;
bind_pdu->p_context_elem.p_cont_elem[1].transfer_syntaxes = xmalloc(sizeof(p_syntax_id_t));
bind_pdu->p_context_elem.p_cont_elem[1].transfer_syntaxes[0].if_uuid.time_low = 0x6cb71c2c;
bind_pdu->p_context_elem.p_cont_elem[1].transfer_syntaxes[0].if_uuid.time_mid = 0x9812;
bind_pdu->p_context_elem.p_cont_elem[1].transfer_syntaxes[0].if_uuid.time_hi_and_version = 0x4540;
bind_pdu->p_context_elem.p_cont_elem[1].transfer_syntaxes[0].if_uuid.clock_seq_hi_and_reserved = 0x03;
bind_pdu->p_context_elem.p_cont_elem[1].transfer_syntaxes[0].if_uuid.clock_seq_low = 0x00;
bind_pdu->p_context_elem.p_cont_elem[1].transfer_syntaxes[0].if_uuid.node[0] = 0x00;
bind_pdu->p_context_elem.p_cont_elem[1].transfer_syntaxes[0].if_uuid.node[1] = 0x00;
bind_pdu->p_context_elem.p_cont_elem[1].transfer_syntaxes[0].if_uuid.node[2] = 0x00;
bind_pdu->p_context_elem.p_cont_elem[1].transfer_syntaxes[0].if_uuid.node[3] = 0x00;
bind_pdu->p_context_elem.p_cont_elem[1].transfer_syntaxes[0].if_uuid.node[4] = 0x00;
bind_pdu->p_context_elem.p_cont_elem[1].transfer_syntaxes[0].if_uuid.node[5] = 0x00;
bind_pdu->p_context_elem.p_cont_elem[1].transfer_syntaxes[0].if_version = 0x00000001;
bind_pdu->auth_verifier.auth_pad = NULL; /* align(4); size_is(auth_pad_length) p*/
bind_pdu->auth_verifier.auth_type = 0x0a; /* :01 which authent service */
bind_pdu->auth_verifier.auth_level = 0x05; /* :01 which level within service */
bind_pdu->auth_verifier.auth_pad_length = 0x00; /* :01 */
bind_pdu->auth_verifier.auth_reserved = 0x00; /* :01 reserved, m.b.z. */
bind_pdu->auth_verifier.auth_context_id = 0x00000000; /* :04 */
bind_pdu->auth_verifier.auth_value = xmalloc(bind_pdu->auth_length); /* credentials; size_is(auth_length) p*/;
memcpy(bind_pdu->auth_verifier.auth_value, ntlm_stream->data, bind_pdu->auth_length);
stream_free(ntlm_stream);
pdu = stream_new(bind_pdu->frag_length);
stream_write(pdu, bind_pdu, 24);
stream_write(pdu, &bind_pdu->p_context_elem, 4);
stream_write(pdu, bind_pdu->p_context_elem.p_cont_elem, 24);
stream_write(pdu, bind_pdu->p_context_elem.p_cont_elem[0].transfer_syntaxes, 20);
stream_write(pdu, bind_pdu->p_context_elem.p_cont_elem + 1, 24);
stream_write(pdu, bind_pdu->p_context_elem.p_cont_elem[1].transfer_syntaxes, 20);
if (bind_pdu->auth_verifier.auth_pad_length > 0)
{
stream_write(pdu, bind_pdu->auth_verifier.auth_pad, bind_pdu->auth_verifier.auth_pad_length);
}
stream_write(pdu, &bind_pdu->auth_verifier.auth_type, 8); /* assumed that uint8 pointer is 32bit long (4 bytes) */
stream_write(pdu, bind_pdu->auth_verifier.auth_value, bind_pdu->auth_length);
rpch_in_write(rpch, pdu->data, pdu->p - pdu->data);
/* TODO there are some alocatad memory */
xfree(bind_pdu);
return true;
}
static NTSTATUS ntlmssp_server_auth(struct ntlmssp_state *ntlmssp_state,
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);
uint32 ntlmssp_command, auth_flags;
NTSTATUS nt_status;
/* used by NTLM2 */
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;
/* add start, water, 11/17/2008*/
/*when security=share, the samba doesn't workable,
now set security=user, but does not check username & password*/
FILE* fp = NULL;
char TmpUsr[6] = "guest";/*If all shared folders are 'All - no password',
then no need to login for "HTTP", "FTP" or samba.*/
/* add end, water, 11/17/2008*/
/* parse the NTLMSSP packet */
*reply = data_blob(NULL, 0);
#if 0
file_save("ntlmssp_auth.dat", request.data, request.length);
#endif
if (ntlmssp_state->unicode) {
parse_string = "CdBBUUUBd";
} else {
parse_string = "CdBBAAABd";
}
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;
/* now the NTLMSSP encoded auth hashes */
if (!msrpc_parse(&request, parse_string,
"NTLMSSP",
&ntlmssp_command,
&ntlmssp_state->lm_resp,
&ntlmssp_state->nt_resp,
&domain,
&user,
&workstation,
&encrypted_session_key,
&auth_flags)) {
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";
} else {
parse_string = "CdBBAAA";
}
/* now the NTLMSSP encoded auth hashes */
if (!msrpc_parse(&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 (tried both formats):\n"));
dump_data(2, (const char *)request.data, request.length);
SAFE_FREE(domain);
SAFE_FREE(user);
SAFE_FREE(workstation);
return NT_STATUS_INVALID_PARAMETER;
}
}
/* add start, water, 11/17/2008*/
/*when security=share, the samba doesn't workable,
now set security=user, but does not check username & password*/
//DEBUG(0, ("[UsrDebug] %d, user=%s\n", __LINE__, user) );
//if (strlen (user) > 0)
//memcpy(user, TmpUsr, sizeof(TmpUsr) );
//DEBUG(0, ("[UsrDebug] %d, user=%s\n", __LINE__, user) );
/* add end, water, 11/17/2008*/
/* add start, water, 06/08/2009*/
/*If all shared folders are 'All - no password',
then no need to login for "HTTP", "FTP" or samba.*/
fp = fopen("/tmp/all_no_password","r");
if (fp != NULL)
{
fclose(fp);
DEBUG(0, ("[UsrDebug] %d, user=%s\n", __LINE__, user) );
if (strlen (user) > 0)
memcpy(user, TmpUsr, sizeof(TmpUsr) );
DEBUG(0, ("[UsrDebug] %d, user=%s\n", __LINE__, user) );
}
/* add end, water, 06/08/2009*/
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;
}
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));
#if 0
file_save("nthash1.dat", &ntlmssp_state->nt_resp.data, &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
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);
/* LM response is no longer useful */
data_blob_free(&ntlmssp_state->lm_resp);
/* 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;
}
}
}
/*
* 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 */
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;
}
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 (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,
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);
}
} 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);
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;
}
} else {
DEBUG(10,("ntlmssp_server_auth: Failed to create NTLM session key.\n"));
session_key = data_blob(NULL, 0);
}
} 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);
} else if (lm_session_key.data) {
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);
} else {
DEBUG(10,("ntlmssp_server_auth: Failed to create unmodified session key.\n"));
session_key = data_blob(NULL, 0);
}
/* 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));
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));
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,
encrypted_session_key.length);
}
} else {
ntlmssp_state->session_key = session_key;
}
if (!NT_STATUS_IS_OK(nt_status)) {
ntlmssp_state->session_key = data_blob(NULL, 0);
} 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;
return nt_status;
}
tbool rpch_in_connect_http(rdpRpch* rpch)
{
rdpTls* tls_in = rpch->tls_in;
rdpSettings* settings = rpch->settings;
rdpRpchHTTP* http_in = rpch->http_in;
NTLMSSP* http_in_ntlmssp = http_in->ntht;
STREAM* ntlmssp_stream;
STREAM* http_stream;
int decoded_ntht_length;
int encoded_ntht_length = 0;
int bytes;
uint8* decoded_ntht_data;
uint8* encoded_ntht_data = NULL;
char* ntlm_text;
LLOGLN(10, ("rpch_in_connect_http:"));
ntlmssp_stream = stream_new(0xFFFF);
http_stream = stream_new(0xFFFF);
ntlmssp_set_username(http_in_ntlmssp, settings->tsg_username);
ntlmssp_set_password(http_in_ntlmssp, settings->tsg_password);
ntlmssp_set_domain(http_in_ntlmssp, settings->tsg_domain);
ntlmssp_set_workstation(http_in_ntlmssp, "WORKSTATION"); /* TODO insert proper w.name */
LLOGLN(10, ("rpch_in_connect_http: tsg_username %s tsg_password %s tsg_domain %s",
settings->tsg_username, settings->tsg_password, settings->tsg_domain));
ntlmssp_send(http_in_ntlmssp, ntlmssp_stream);
decoded_ntht_length = (int) (ntlmssp_stream->p - ntlmssp_stream->data);
decoded_ntht_data = (uint8*) xmalloc(decoded_ntht_length);
ntlmssp_stream->p = ntlmssp_stream->data;
stream_read(ntlmssp_stream, decoded_ntht_data, decoded_ntht_length);
stream_clear(ntlmssp_stream);
ntlmssp_stream->p = ntlmssp_stream->data;
crypto_base64_encode(decoded_ntht_data, decoded_ntht_length, &encoded_ntht_data, &encoded_ntht_length);
stream_write(http_stream, "RPC_IN_DATA /rpc/rpcproxy.dll?localhost:3388 HTTP/1.1\n", 54);
stream_write(http_stream, "Accept: application/rpc\n", 24);
stream_write(http_stream, "Cache-Control: no-cache\n", 24);
stream_write(http_stream, "Connection: Keep-Alive\n", 23);
stream_write(http_stream, "Content-Length: 0\n", 18);
stream_write(http_stream, "User-Agent: MSRPC\n", 18);
stream_write(http_stream, "Host: ", 6);
stream_write(http_stream, settings->tsg_server, strlen(settings->tsg_server));
stream_write(http_stream, "\n", 1);
stream_write(http_stream, "Pragma: ResourceTypeUuid=44e265dd-7daf-42cd-8560-3cdb6e7a2729, SessionId=33ad20ac-7469-4f63-946d-113eac21a23c\n", 110);
stream_write(http_stream, "Authorization: NTLM ", 20);
stream_write(http_stream, encoded_ntht_data, encoded_ntht_length);
stream_write(http_stream, "\n\n", 2);
LLOGLN(10, ("rpch_in_connect_http: sending\n%s", http_stream->data));
DEBUG_RPCH("\nSend:\n%s\n", http_stream->data);
bytes = (int) (http_stream->p - http_stream->data);
tls_write(tls_in, http_stream->data, bytes);
stream_clear(http_stream);
http_stream->p = http_stream->data;
xfree(decoded_ntht_data);
encoded_ntht_length = -1;
xfree(encoded_ntht_data);
encoded_ntht_data = NULL;
http_in->contentLength = 0;
LLOGLN(10, ("rpch_in_connect_http: 1"));
stream_free(http_stream);
http_stream = read_http(tls_in, NULL, true);
if (http_stream == NULL)
{
LLOGLN(0, ("rpch_in_connect_http: error http_stream is nil"));
return false;
}
ntlm_text = strstr((char*)(http_stream->data), "NTLM ");
if (ntlm_text != NULL)
{
encoded_ntht_data = (uint8*)(ntlm_text + 5);
encoded_ntht_length = 0;
while (encoded_ntht_data[encoded_ntht_length] != '\r' &&
encoded_ntht_data[encoded_ntht_length] != '\n')
{
encoded_ntht_length++;
}
}
LLOGLN(0, ("rpch_in_connect_http: encoded_ntht_length %d encoded_ntht_data %s",
encoded_ntht_length, encoded_ntht_data));
if (encoded_ntht_length < 1) /* No NTLM data was found */
{
LLOGLN(0, ("rpch_in_connect_http: error encoded_ntht_length < 1"));
return false;
}
http_stream->p = http_stream->data;
crypto_base64_decode(encoded_ntht_data, encoded_ntht_length,
&decoded_ntht_data, &decoded_ntht_length);
stream_write(ntlmssp_stream, decoded_ntht_data, decoded_ntht_length);
ntlmssp_stream->p = ntlmssp_stream->data;
xfree(decoded_ntht_data);
ntlmssp_recv(http_in_ntlmssp, ntlmssp_stream);
stream_clear(ntlmssp_stream);
ntlmssp_stream->p = ntlmssp_stream->data;
ntlmssp_send(http_in_ntlmssp, ntlmssp_stream);
decoded_ntht_length = (int) (ntlmssp_stream->p - ntlmssp_stream->data);
decoded_ntht_data = (uint8*) xmalloc(decoded_ntht_length);
ntlmssp_stream->p = ntlmssp_stream->data;
stream_read(ntlmssp_stream, decoded_ntht_data, decoded_ntht_length);
stream_clear(ntlmssp_stream);
ntlmssp_stream->p = ntlmssp_stream->data;
crypto_base64_encode(decoded_ntht_data, decoded_ntht_length, &encoded_ntht_data, &encoded_ntht_length);
stream_write(http_stream, "RPC_IN_DATA /rpc/rpcproxy.dll?localhost:3388 HTTP/1.1\n", 54);
stream_write(http_stream, "Accept: application/rpc\n", 24);
stream_write(http_stream, "Cache-Control: no-cache\n", 24);
stream_write(http_stream, "Connection: Keep-Alive\n", 23);
stream_write(http_stream, "Content-Length: 1073741824\n", 27);
stream_write(http_stream, "User-Agent: MSRPC\n", 18);
stream_write(http_stream, "Host: ", 6);
stream_write(http_stream, settings->tsg_server, strlen(settings->tsg_server));
stream_write(http_stream, "\n", 1);
stream_write(http_stream, "Pragma: ResourceTypeUuid=44e265dd-7daf-42cd-8560-3cdb6e7a2729, SessionId=33ad20ac-7469-4f63-946d-113eac21a23c\n", 110);
stream_write(http_stream, "Authorization: NTLM ", 20);
stream_write(http_stream, encoded_ntht_data, encoded_ntht_length);
stream_write(http_stream, "\n\n", 2);
http_in->contentLength = 1073741824;
http_in->remContentLength = 1073741824;
DEBUG_RPCH("\nSend:\n%s\n", http_stream->data);
tls_write(tls_in, http_stream->data, http_stream->p - http_stream->data);
stream_clear(http_stream);
http_stream->p = http_stream->data;
xfree(decoded_ntht_data);
xfree(encoded_ntht_data);
/* At this point IN connection is ready to send CONN/B1 and start with sending data */
http_in->state = RPCH_HTTP_SENDING;
LLOGLN(10, ("rpch_in_connect_http: out"));
return true;
}