static void reply_corep(struct smb_request *req, uint16 choice)
{
reply_outbuf(req, 1, 0);
SSVAL(req->outbuf, smb_vwv0, choice);
set_Protocol(PROTOCOL_CORE);
}
static void reply_coreplus(struct smb_request *req, uint16 choice)
{
int raw = (lp_readraw()?1:0) | (lp_writeraw()?2:0);
reply_outbuf(req, 13, 0);
SSVAL(req->outbuf,smb_vwv0,choice);
SSVAL(req->outbuf,smb_vwv5,raw); /* tell redirector we support
readbraw and writebraw (possibly) */
/* Reply, SMBlockread, SMBwritelock supported. */
SCVAL(req->outbuf,smb_flg,FLAG_REPLY|FLAG_SUPPORT_LOCKREAD);
SSVAL(req->outbuf,smb_vwv1,0x1); /* user level security, don't
* encrypt */
set_Protocol(PROTOCOL_COREPLUS);
}
static void reply_lanman1(struct smb_request *req, uint16 choice)
{
int raw = (lp_readraw()?1:0) | (lp_writeraw()?2:0);
int secword=0;
time_t t = time(NULL);
struct smbd_server_connection *sconn = req->sconn;
sconn->smb1.negprot.encrypted_passwords = lp_encrypted_passwords();
if (lp_security()>=SEC_USER) {
secword |= NEGOTIATE_SECURITY_USER_LEVEL;
}
if (sconn->smb1.negprot.encrypted_passwords) {
secword |= NEGOTIATE_SECURITY_CHALLENGE_RESPONSE;
}
reply_outbuf(req, 13, sconn->smb1.negprot.encrypted_passwords?8:0);
SSVAL(req->outbuf,smb_vwv0,choice);
SSVAL(req->outbuf,smb_vwv1,secword);
/* Create a token value and add it to the outgoing packet. */
if (sconn->smb1.negprot.encrypted_passwords) {
get_challenge(sconn, (uint8 *)smb_buf(req->outbuf));
SSVAL(req->outbuf,smb_vwv11, 8);
}
set_Protocol(PROTOCOL_LANMAN1);
/* Reply, SMBlockread, SMBwritelock supported. */
SCVAL(req->outbuf,smb_flg,FLAG_REPLY|FLAG_SUPPORT_LOCKREAD);
SSVAL(req->outbuf,smb_vwv2,sconn->smb1.negprot.max_recv);
SSVAL(req->outbuf,smb_vwv3,lp_maxmux()); /* maxmux */
SSVAL(req->outbuf,smb_vwv4,1);
SSVAL(req->outbuf,smb_vwv5,raw); /* tell redirector we support
readbraw writebraw (possibly) */
SIVAL(req->outbuf,smb_vwv6,sys_getpid());
SSVAL(req->outbuf,smb_vwv10, set_server_zone_offset(t)/60);
srv_put_dos_date((char *)req->outbuf,smb_vwv8,t);
return;
}
NTSTATUS smbd_smb2_request_process_negprot(struct smbd_smb2_request *req)
{
const uint8_t *inbody;
const uint8_t *indyn = NULL;
int i = req->current_idx;
DATA_BLOB outbody;
DATA_BLOB outdyn;
DATA_BLOB negprot_spnego_blob;
uint16_t security_offset;
DATA_BLOB security_buffer;
size_t expected_body_size = 0x24;
size_t body_size;
size_t expected_dyn_size = 0;
size_t c;
uint16_t security_mode;
uint16_t dialect_count;
uint16_t dialect = 0;
uint32_t capabilities;
/* TODO: drop the connection with INVALI_PARAMETER */
if (req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) {
return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
}
inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
body_size = SVAL(inbody, 0x00);
if (body_size != expected_body_size) {
return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
}
dialect_count = SVAL(inbody, 0x02);
if (dialect_count == 0) {
return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
}
expected_dyn_size = dialect_count * 2;
if (req->in.vector[i+2].iov_len < expected_dyn_size) {
return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
}
indyn = (const uint8_t *)req->in.vector[i+2].iov_base;
for (c=0; c < dialect_count; c++) {
dialect = SVAL(indyn, c*2);
if (dialect == SMB2_DIALECT_REVISION_202) {
break;
}
}
if (dialect != SMB2_DIALECT_REVISION_202) {
return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
}
set_Protocol(PROTOCOL_SMB2);
if (get_remote_arch() != RA_SAMBA) {
set_remote_arch(RA_VISTA);
}
/* negprot_spnego() returns a the server guid in the first 16 bytes */
negprot_spnego_blob = negprot_spnego();
if (negprot_spnego_blob.data == NULL) {
return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
}
talloc_steal(req, negprot_spnego_blob.data);
if (negprot_spnego_blob.length < 16) {
return smbd_smb2_request_error(req, NT_STATUS_INTERNAL_ERROR);
}
security_mode = SMB2_NEGOTIATE_SIGNING_ENABLED;
if (lp_server_signing() == Required) {
security_mode |= SMB2_NEGOTIATE_SIGNING_REQUIRED;
}
capabilities = 0;
if (lp_host_msdfs()) {
capabilities |= SMB2_CAP_DFS;
}
security_offset = SMB2_HDR_BODY + 0x40;
#if 1
/* Try SPNEGO auth... */
security_buffer = data_blob_const(negprot_spnego_blob.data + 16,
negprot_spnego_blob.length - 16);
#else
/* for now we want raw NTLMSSP */
security_buffer = data_blob_const(NULL, 0);
#endif
outbody = data_blob_talloc(req->out.vector, NULL, 0x40);
if (outbody.data == NULL) {
return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
}
SSVAL(outbody.data, 0x00, 0x40 + 1); /* struct size */
SSVAL(outbody.data, 0x02,
security_mode); /* security mode */
SSVAL(outbody.data, 0x04, dialect); /* dialect revision */
SSVAL(outbody.data, 0x06, 0); /* reserved */
memcpy(outbody.data + 0x08,
negprot_spnego_blob.data, 16); /* server guid */
SIVAL(outbody.data, 0x18,
capabilities); /* capabilities */
SIVAL(outbody.data, 0x1C, 0x00010000); /* max transact size */
SIVAL(outbody.data, 0x20, 0x00010000); /* max read size */
SIVAL(outbody.data, 0x24, 0x00010000); /* max write size */
SBVAL(outbody.data, 0x28, 0); /* system time */
SBVAL(outbody.data, 0x30, 0); /* server start time */
SSVAL(outbody.data, 0x38,
security_offset); /* security buffer offset */
SSVAL(outbody.data, 0x3A,
security_buffer.length); /* security buffer length */
SIVAL(outbody.data, 0x3C, 0); /* reserved */
outdyn = security_buffer;
return smbd_smb2_request_done(req, outbody, &outdyn);
}
static void reply_nt1(struct smb_request *req, uint16 choice)
{
/* dual names + lock_and_read + nt SMBs + remote API calls */
int capabilities = CAP_NT_FIND|CAP_LOCK_AND_READ|
CAP_LEVEL_II_OPLOCKS;
int secword=0;
bool negotiate_spnego = False;
struct timespec ts;
ssize_t ret;
struct smbd_server_connection *sconn = req->sconn;
sconn->smb1.negprot.encrypted_passwords = lp_encrypted_passwords();
/* Check the flags field to see if this is Vista.
WinXP sets it and Vista does not. But we have to
distinguish from NT which doesn't set it either. */
if ( (req->flags2 & FLAGS2_EXTENDED_SECURITY) &&
((req->flags2 & FLAGS2_UNKNOWN_BIT4) == 0) )
{
if (get_remote_arch() != RA_SAMBA) {
set_remote_arch( RA_VISTA );
}
}
reply_outbuf(req,17,0);
/* do spnego in user level security if the client
supports it and we can do encrypted passwords */
if (sconn->smb1.negprot.encrypted_passwords &&
(lp_security() != SEC_SHARE) &&
lp_use_spnego() &&
(req->flags2 & FLAGS2_EXTENDED_SECURITY)) {
negotiate_spnego = True;
capabilities |= CAP_EXTENDED_SECURITY;
add_to_common_flags2(FLAGS2_EXTENDED_SECURITY);
/* Ensure FLAGS2_EXTENDED_SECURITY gets set in this reply
(already partially constructed. */
SSVAL(req->outbuf, smb_flg2,
req->flags2 | FLAGS2_EXTENDED_SECURITY);
}
capabilities |= CAP_NT_SMBS|CAP_RPC_REMOTE_APIS|CAP_UNICODE;
if (lp_unix_extensions()) {
capabilities |= CAP_UNIX;
}
if (lp_large_readwrite() && (SMB_OFF_T_BITS == 64))
capabilities |= CAP_LARGE_READX|CAP_LARGE_WRITEX|CAP_W2K_SMBS;
if (SMB_OFF_T_BITS == 64)
capabilities |= CAP_LARGE_FILES;
if (lp_readraw() && lp_writeraw())
capabilities |= CAP_RAW_MODE;
if (lp_nt_status_support())
capabilities |= CAP_STATUS32;
if (lp_host_msdfs())
capabilities |= CAP_DFS;
if (lp_security() >= SEC_USER) {
secword |= NEGOTIATE_SECURITY_USER_LEVEL;
}
if (sconn->smb1.negprot.encrypted_passwords) {
secword |= NEGOTIATE_SECURITY_CHALLENGE_RESPONSE;
}
if (lp_server_signing()) {
if (lp_security() >= SEC_USER) {
secword |= NEGOTIATE_SECURITY_SIGNATURES_ENABLED;
/* No raw mode with smb signing. */
capabilities &= ~CAP_RAW_MODE;
if (lp_server_signing() == Required)
secword |=NEGOTIATE_SECURITY_SIGNATURES_REQUIRED;
srv_set_signing_negotiated(sconn);
} else {
DEBUG(0,("reply_nt1: smb signing is incompatible with share level security !\n"));
if (lp_server_signing() == Required) {
exit_server_cleanly("reply_nt1: smb signing required and share level security selected.");
}
}
}
SSVAL(req->outbuf,smb_vwv0,choice);
SCVAL(req->outbuf,smb_vwv1,secword);
set_Protocol(PROTOCOL_NT1);
SSVAL(req->outbuf,smb_vwv1+1,lp_maxmux()); /* maxmpx */
SSVAL(req->outbuf,smb_vwv2+1,1); /* num vcs */
SIVAL(req->outbuf,smb_vwv3+1,
sconn->smb1.negprot.max_recv); /* max buffer. LOTS! */
SIVAL(req->outbuf,smb_vwv5+1,0x10000); /* raw size. full 64k */
SIVAL(req->outbuf,smb_vwv7+1,sys_getpid()); /* session key */
SIVAL(req->outbuf,smb_vwv9+1,capabilities); /* capabilities */
clock_gettime(CLOCK_REALTIME,&ts);
put_long_date_timespec(TIMESTAMP_SET_NT_OR_BETTER,(char *)req->outbuf+smb_vwv11+1,ts);
SSVALS(req->outbuf,smb_vwv15+1,set_server_zone_offset(ts.tv_sec)/60);
if (!negotiate_spnego) {
/* Create a token value and add it to the outgoing packet. */
if (sconn->smb1.negprot.encrypted_passwords) {
uint8 chal[8];
/* note that we do not send a challenge at all if
we are using plaintext */
get_challenge(sconn, chal);
ret = message_push_blob(
&req->outbuf, data_blob_const(chal, sizeof(chal)));
if (ret == -1) {
DEBUG(0, ("Could not push challenge\n"));
reply_nterror(req, NT_STATUS_NO_MEMORY);
return;
}
SCVAL(req->outbuf, smb_vwv16+1, ret);
}
ret = message_push_string(&req->outbuf, lp_workgroup(),
STR_UNICODE|STR_TERMINATE
|STR_NOALIGN);
if (ret == -1) {
DEBUG(0, ("Could not push workgroup string\n"));
reply_nterror(req, NT_STATUS_NO_MEMORY);
return;
}
DEBUG(3,("not using SPNEGO\n"));
} else {
DATA_BLOB spnego_blob = negprot_spnego(req, req->sconn);
if (spnego_blob.data == NULL) {
reply_nterror(req, NT_STATUS_NO_MEMORY);
return;
}
ret = message_push_blob(&req->outbuf, spnego_blob);
if (ret == -1) {
DEBUG(0, ("Could not push spnego blob\n"));
reply_nterror(req, NT_STATUS_NO_MEMORY);
return;
}
data_blob_free(&spnego_blob);
SCVAL(req->outbuf,smb_vwv16+1, 0);
DEBUG(3,("using SPNEGO\n"));
}
return;
}
NTSTATUS smbd_smb2_request_process_negprot(struct smbd_smb2_request *req)
{
NTSTATUS status;
const uint8_t *inbody;
const uint8_t *indyn = NULL;
int i = req->current_idx;
DATA_BLOB outbody;
DATA_BLOB outdyn;
DATA_BLOB negprot_spnego_blob;
uint16_t security_offset;
DATA_BLOB security_buffer;
size_t expected_dyn_size = 0;
size_t c;
uint16_t security_mode;
uint16_t dialect_count;
uint16_t dialect = 0;
uint32_t capabilities;
enum protocol_types protocol = PROTOCOL_NONE;
uint32_t max_limit;
uint32_t max_trans = lp_smb2_max_trans();
uint32_t max_read = lp_smb2_max_read();
uint32_t max_write = lp_smb2_max_write();
status = smbd_smb2_request_verify_sizes(req, 0x24);
if (!NT_STATUS_IS_OK(status)) {
return smbd_smb2_request_error(req, status);
}
inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
dialect_count = SVAL(inbody, 0x02);
if (dialect_count == 0) {
return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
}
expected_dyn_size = dialect_count * 2;
if (req->in.vector[i+2].iov_len < expected_dyn_size) {
return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
}
indyn = (const uint8_t *)req->in.vector[i+2].iov_base;
for (c=0; protocol == PROTOCOL_NONE && c < dialect_count; c++) {
if (lp_srv_maxprotocol() < PROTOCOL_SMB2_24) {
break;
}
if (lp_srv_minprotocol() > PROTOCOL_SMB2_24) {
break;
}
dialect = SVAL(indyn, c*2);
if (dialect == SMB2_DIALECT_REVISION_224) {
protocol = PROTOCOL_SMB2_24;
break;
}
}
for (c=0; protocol == PROTOCOL_NONE && c < dialect_count; c++) {
if (lp_srv_maxprotocol() < PROTOCOL_SMB2_22) {
break;
}
if (lp_srv_minprotocol() > PROTOCOL_SMB2_22) {
break;
}
dialect = SVAL(indyn, c*2);
if (dialect == SMB2_DIALECT_REVISION_222) {
protocol = PROTOCOL_SMB2_22;
break;
}
}
for (c=0; protocol == PROTOCOL_NONE && c < dialect_count; c++) {
if (lp_srv_maxprotocol() < PROTOCOL_SMB2_10) {
break;
}
if (lp_srv_minprotocol() > PROTOCOL_SMB2_10) {
break;
}
dialect = SVAL(indyn, c*2);
if (dialect == SMB2_DIALECT_REVISION_210) {
protocol = PROTOCOL_SMB2_10;
break;
}
}
for (c=0; protocol == PROTOCOL_NONE && c < dialect_count; c++) {
if (lp_srv_maxprotocol() < PROTOCOL_SMB2_02) {
break;
}
if (lp_srv_minprotocol() > PROTOCOL_SMB2_02) {
break;
}
dialect = SVAL(indyn, c*2);
if (dialect == SMB2_DIALECT_REVISION_202) {
protocol = PROTOCOL_SMB2_02;
break;
}
}
for (c=0; protocol == PROTOCOL_NONE && c < dialect_count; c++) {
if (lp_srv_maxprotocol() < PROTOCOL_SMB2_10) {
break;
}
dialect = SVAL(indyn, c*2);
if (dialect == SMB2_DIALECT_REVISION_2FF) {
if (req->sconn->smb2.negprot_2ff) {
req->sconn->smb2.negprot_2ff = false;
protocol = PROTOCOL_SMB2_10;
break;
}
}
}
if (protocol == PROTOCOL_NONE) {
return smbd_smb2_request_error(req, NT_STATUS_NOT_SUPPORTED);
}
if (dialect != SMB2_DIALECT_REVISION_2FF) {
set_Protocol(protocol);
}
if (get_remote_arch() != RA_SAMBA) {
set_remote_arch(RA_VISTA);
}
/* negprot_spnego() returns a the server guid in the first 16 bytes */
negprot_spnego_blob = negprot_spnego(req, req->sconn);
if (negprot_spnego_blob.data == NULL) {
return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
}
if (negprot_spnego_blob.length < 16) {
return smbd_smb2_request_error(req, NT_STATUS_INTERNAL_ERROR);
}
security_mode = SMB2_NEGOTIATE_SIGNING_ENABLED;
if (lp_server_signing() == SMB_SIGNING_REQUIRED) {
security_mode |= SMB2_NEGOTIATE_SIGNING_REQUIRED;
}
capabilities = 0;
if (lp_host_msdfs()) {
capabilities |= SMB2_CAP_DFS;
}
/*
* 0x10000 (65536) is the maximum allowed message size
* for SMB 2.0
*/
max_limit = 0x10000;
if (protocol >= PROTOCOL_SMB2_10) {
/* largeMTU is only available on port 445 */
if (TCP_SMB_PORT ==
tsocket_address_inet_port(req->sconn->local_address))
{
capabilities |= SMB2_CAP_LARGE_MTU;
req->sconn->smb2.supports_multicredit = true;
/* SMB2.1 has 1 MB of allowed size */
max_limit = 0x100000; /* 1MB */
}
}
/*
* the defaults are 1MB, but we'll limit this to max_limit based on
* the dialect (64kb for SMB2.0, 1MB for SMB2.1 with LargeMTU)
*
* user configured values exceeding the limits will be overwritten,
* only smaller values will be accepted
*/
max_trans = MIN(max_limit, lp_smb2_max_trans());
max_read = MIN(max_limit, lp_smb2_max_read());
max_write = MIN(max_limit, lp_smb2_max_write());
security_offset = SMB2_HDR_BODY + 0x40;
#if 1
/* Try SPNEGO auth... */
security_buffer = data_blob_const(negprot_spnego_blob.data + 16,
negprot_spnego_blob.length - 16);
#else
/* for now we want raw NTLMSSP */
security_buffer = data_blob_const(NULL, 0);
#endif
outbody = data_blob_talloc(req->out.vector, NULL, 0x40);
if (outbody.data == NULL) {
return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
}
SSVAL(outbody.data, 0x00, 0x40 + 1); /* struct size */
SSVAL(outbody.data, 0x02,
security_mode); /* security mode */
SSVAL(outbody.data, 0x04, dialect); /* dialect revision */
SSVAL(outbody.data, 0x06, 0); /* reserved */
memcpy(outbody.data + 0x08,
negprot_spnego_blob.data, 16); /* server guid */
SIVAL(outbody.data, 0x18,
capabilities); /* capabilities */
SIVAL(outbody.data, 0x1C, max_trans); /* max transact size */
SIVAL(outbody.data, 0x20, max_read); /* max read size */
SIVAL(outbody.data, 0x24, max_write); /* max write size */
SBVAL(outbody.data, 0x28, 0); /* system time */
SBVAL(outbody.data, 0x30, 0); /* server start time */
SSVAL(outbody.data, 0x38,
security_offset); /* security buffer offset */
SSVAL(outbody.data, 0x3A,
security_buffer.length); /* security buffer length */
SIVAL(outbody.data, 0x3C, 0); /* reserved */
outdyn = security_buffer;
req->sconn->using_smb2 = true;
req->sconn->smb2.max_trans = max_trans;
req->sconn->smb2.max_read = max_read;
req->sconn->smb2.max_write = max_write;
return smbd_smb2_request_done(req, outbody, &outdyn);
}
