int buffer_add_int16(xrtp_buffer_t * buf, int16 word)
{
if(buf->len_data + sizeof(int16) > buf->len)
{
return OS_EREFUSE;
}
if(buf->byte_order == BIGEND_ORDER)
{
buffer_log(("buffer_add_int16: Add BE(%d) to buf[%d]@%d\n", word, buf->pos, (int)buf->data));
RSSVALS(buf->data, buf->len_data, word);
}
else
{
buffer_log(("buffer_add_int16: Add LE(%d) to buf[%d]@%d\n", word, buf->pos, (int)buf->data));
SSVALS(buf->data, buf->len_data, word);
}
buf->len_data += sizeof(int16);
buf->pos += sizeof(int16);
return OS_OK;
}
static int reply_nt1(char *inbuf, char *outbuf)
{
/* 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;
char *p, *q;
BOOL negotiate_spnego = False;
time_t t = time(NULL);
global_encrypted_passwords_negotiated = 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 ( (SVAL(inbuf, smb_flg2) & FLAGS2_EXTENDED_SECURITY) &&
((SVAL(inbuf, smb_flg2) & FLAGS2_UNKNOWN_BIT4) == 0) )
{
/* Don't override the SAMBA or CIFSFS arch */
if ((get_remote_arch() != RA_SAMBA) && (get_remote_arch() != RA_CIFSFS)) {
set_remote_arch( RA_VISTA );
}
}
/* do spnego in user level security if the client
supports it and we can do encrypted passwords */
if (global_encrypted_passwords_negotiated &&
(lp_security() != SEC_SHARE) &&
lp_use_spnego() &&
(SVAL(inbuf, smb_flg2) & 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(outbuf,smb_flg2, SVAL(outbuf,smb_flg2) | 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 (global_encrypted_passwords_negotiated)
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();
} 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.");
}
}
}
set_message(outbuf,17,0,True);
SCVAL(outbuf,smb_vwv1,secword);
Protocol = PROTOCOL_NT1;
SSVAL(outbuf,smb_vwv1+1,lp_maxmux()); /* maxmpx */
SSVAL(outbuf,smb_vwv2+1,1); /* num vcs */
SIVAL(outbuf,smb_vwv3+1,max_recv); /* max buffer. LOTS! */
SIVAL(outbuf,smb_vwv5+1,0x10000); /* raw size. full 64k */
SIVAL(outbuf,smb_vwv7+1,sys_getpid()); /* session key */
SIVAL(outbuf,smb_vwv9+1,capabilities); /* capabilities */
put_long_date(outbuf+smb_vwv11+1,t);
SSVALS(outbuf,smb_vwv15+1,set_server_zone_offset(t)/60);
p = q = smb_buf(outbuf);
if (!negotiate_spnego) {
/* Create a token value and add it to the outgoing packet. */
if (global_encrypted_passwords_negotiated) {
/* note that we do not send a challenge at all if
we are using plaintext */
get_challenge(p);
SCVAL(outbuf,smb_vwv16+1,8);
p += 8;
}
p += srvstr_push(outbuf, p, lp_workgroup(), BUFFER_SIZE - (p-outbuf),
STR_UNICODE|STR_TERMINATE|STR_NOALIGN);
DEBUG(3,("not using SPNEGO\n"));
} else {
DATA_BLOB spnego_blob = negprot_spnego();
if (spnego_blob.data == NULL) {
return ERROR_NT(NT_STATUS_NO_MEMORY);
}
memcpy(p, spnego_blob.data, spnego_blob.length);
p += spnego_blob.length;
data_blob_free(&spnego_blob);
SCVAL(outbuf,smb_vwv16+1, 0);
DEBUG(3,("using SPNEGO\n"));
}
SSVAL(outbuf,smb_vwv17, p - q); /* length of challenge+domain strings */
set_message_end(outbuf, p);
return (smb_len(outbuf)+4);
}
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;
bool signing_enabled = false;
bool signing_required = false;
sconn->smb1.negprot.encrypted_passwords = lp_encrypt_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_SMB_SECURITY_SIGNATURES_REQUIRED) == 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_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;
if (lp_unicode()) {
capabilities |= CAP_UNICODE;
}
if (lp_unix_extensions()) {
capabilities |= CAP_UNIX;
}
if (lp_large_readwrite())
capabilities |= CAP_LARGE_READX|CAP_LARGE_WRITEX|CAP_W2K_SMBS;
capabilities |= CAP_LARGE_FILES;
if (!lp_async_smb_echo_handler() && lp_read_raw() && lp_write_raw())
capabilities |= CAP_RAW_MODE;
if (lp_nt_status_support())
capabilities |= CAP_STATUS32;
if (lp_host_msdfs())
capabilities |= CAP_DFS;
secword |= NEGOTIATE_SECURITY_USER_LEVEL;
if (sconn->smb1.negprot.encrypted_passwords) {
secword |= NEGOTIATE_SECURITY_CHALLENGE_RESPONSE;
}
signing_enabled = smb_signing_is_allowed(req->sconn->smb1.signing_state);
signing_required = smb_signing_is_mandatory(req->sconn->smb1.signing_state);
if (signing_enabled) {
secword |= NEGOTIATE_SECURITY_SIGNATURES_ENABLED;
/* No raw mode with smb signing. */
capabilities &= ~CAP_RAW_MODE;
if (signing_required) {
secword |=NEGOTIATE_SECURITY_SIGNATURES_REQUIRED;
}
}
SSVAL(req->outbuf,smb_vwv0,choice);
SCVAL(req->outbuf,smb_vwv1,secword);
smbXsrv_connection_init_tables(req->sconn->conn, PROTOCOL_NT1);
SSVAL(req->outbuf,smb_vwv1+1, lp_max_mux()); /* 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, 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;
}
ret = message_push_string(&req->outbuf, lp_netbios_name(),
STR_UNICODE|STR_TERMINATE
|STR_NOALIGN);
if (ret == -1) {
DEBUG(0, ("Could not push netbios name 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;
}
bool cli_send_trans(struct cli_state *cli, int trans,
const char *pipe_name,
int fid, int flags,
uint16 *setup, unsigned int lsetup, unsigned int msetup,
const char *param, unsigned int lparam, unsigned int mparam,
const char *data, unsigned int ldata, unsigned int mdata)
{
unsigned int i;
unsigned int this_ldata,this_lparam;
unsigned int tot_data=0,tot_param=0;
char *outdata,*outparam;
char *p;
int pipe_name_len=0;
uint16 mid;
this_lparam = MIN(lparam,cli->max_xmit - (500+lsetup*2)); /* hack */
this_ldata = MIN(ldata,cli->max_xmit - (500+lsetup*2+this_lparam));
memset(cli->outbuf,'\0',smb_size);
cli_set_message(cli->outbuf,14+lsetup,0,True);
SCVAL(cli->outbuf,smb_com,trans);
SSVAL(cli->outbuf,smb_tid, cli->cnum);
cli_setup_packet(cli);
/*
* Save the mid we're using. We need this for finding
* signing replies.
*/
mid = cli->mid;
if (pipe_name) {
pipe_name_len = clistr_push(cli, smb_buf(cli->outbuf), pipe_name, -1, STR_TERMINATE);
}
outparam = smb_buf(cli->outbuf)+(trans==SMBtrans ? pipe_name_len : 3);
outdata = outparam+this_lparam;
/* primary request */
SSVAL(cli->outbuf,smb_tpscnt,lparam); /* tpscnt */
SSVAL(cli->outbuf,smb_tdscnt,ldata); /* tdscnt */
SSVAL(cli->outbuf,smb_mprcnt,mparam); /* mprcnt */
SSVAL(cli->outbuf,smb_mdrcnt,mdata); /* mdrcnt */
SCVAL(cli->outbuf,smb_msrcnt,msetup); /* msrcnt */
SSVAL(cli->outbuf,smb_flags,flags); /* flags */
SIVAL(cli->outbuf,smb_timeout,0); /* timeout */
SSVAL(cli->outbuf,smb_pscnt,this_lparam); /* pscnt */
SSVAL(cli->outbuf,smb_psoff,smb_offset(outparam,cli->outbuf)); /* psoff */
SSVAL(cli->outbuf,smb_dscnt,this_ldata); /* dscnt */
SSVAL(cli->outbuf,smb_dsoff,smb_offset(outdata,cli->outbuf)); /* dsoff */
SCVAL(cli->outbuf,smb_suwcnt,lsetup); /* suwcnt */
for (i=0;i<lsetup;i++) /* setup[] */
SSVAL(cli->outbuf,smb_setup+i*2,setup[i]);
p = smb_buf(cli->outbuf);
if (trans != SMBtrans) {
*p++ = 0; /* put in a null smb_name */
*p++ = 'D'; *p++ = ' '; /* observed in OS/2 */
}
if (this_lparam) /* param[] */
memcpy(outparam,param,this_lparam);
if (this_ldata) /* data[] */
memcpy(outdata,data,this_ldata);
cli_setup_bcc(cli, outdata+this_ldata);
show_msg(cli->outbuf);
if (!cli_send_smb(cli)) {
return False;
}
cli_state_seqnum_persistent(cli, mid);
if (this_ldata < ldata || this_lparam < lparam) {
/* receive interim response */
if (!cli_receive_smb(cli) || cli_is_error(cli)) {
cli_state_seqnum_remove(cli, mid);
return(False);
}
tot_data = this_ldata;
tot_param = this_lparam;
while (tot_data < ldata || tot_param < lparam) {
this_lparam = MIN(lparam-tot_param,cli->max_xmit - 500); /* hack */
this_ldata = MIN(ldata-tot_data,cli->max_xmit - (500+this_lparam));
cli_set_message(cli->outbuf,trans==SMBtrans?8:9,0,True);
SCVAL(cli->outbuf,smb_com,(trans==SMBtrans ? SMBtranss : SMBtranss2));
outparam = smb_buf(cli->outbuf);
outdata = outparam+this_lparam;
/* secondary request */
SSVAL(cli->outbuf,smb_tpscnt,lparam); /* tpscnt */
SSVAL(cli->outbuf,smb_tdscnt,ldata); /* tdscnt */
SSVAL(cli->outbuf,smb_spscnt,this_lparam); /* pscnt */
SSVAL(cli->outbuf,smb_spsoff,smb_offset(outparam,cli->outbuf)); /* psoff */
SSVAL(cli->outbuf,smb_spsdisp,tot_param); /* psdisp */
SSVAL(cli->outbuf,smb_sdscnt,this_ldata); /* dscnt */
SSVAL(cli->outbuf,smb_sdsoff,smb_offset(outdata,cli->outbuf)); /* dsoff */
SSVAL(cli->outbuf,smb_sdsdisp,tot_data); /* dsdisp */
if (trans==SMBtrans2)
SSVALS(cli->outbuf,smb_sfid,fid); /* fid */
if (this_lparam) /* param[] */
memcpy(outparam,param+tot_param,this_lparam);
if (this_ldata) /* data[] */
memcpy(outdata,data+tot_data,this_ldata);
cli_setup_bcc(cli, outdata+this_ldata);
show_msg(cli->outbuf);
cli->mid = mid;
if (!cli_send_smb(cli)) {
cli_state_seqnum_remove(cli, mid);
return False;
}
tot_data += this_ldata;
tot_param += this_lparam;
}
}
return(True);
}
