int buffer_next_int16(xrtp_buffer_t * buf, int16 * ret){
if(buf->pos + sizeof(int16) > buf->len){
return 0;
}
if(HOST_BYTEORDER == BIGEND_ORDER)
*ret = RSVALS(&(buf->data), buf->pos);
else
*ret = SVALS(&(buf->data), buf->pos);
buffer_log(("buffer_next_int16: (%d) at buf[%d]@%d\n", *ret, buf->pos, (int)buf->data));
buf->pos += sizeof(int16);
return sizeof(int16);
}
/*
Send a negprot command.
*/
NTSTATUS smb_raw_negotiate_recv(struct smbcli_request *req)
{
struct smbcli_transport *transport = req->transport;
int protocol;
if (!smbcli_request_receive(req) ||
smbcli_request_is_error(req)) {
return smbcli_request_destroy(req);
}
SMBCLI_CHECK_MIN_WCT(req, 1);
protocol = SVALS(req->in.vwv, VWV(0));
if (protocol >= ARRAY_SIZE(prots) || protocol < 0) {
req->status = NT_STATUS_UNSUCCESSFUL;
return smbcli_request_destroy(req);
}
transport->negotiate.protocol = prots[protocol].prot;
if (transport->negotiate.protocol >= PROTOCOL_NT1) {
NTTIME ntt;
/* NT protocol */
SMBCLI_CHECK_WCT(req, 17);
transport->negotiate.sec_mode = CVAL(req->in.vwv,VWV(1));
transport->negotiate.max_mux = SVAL(req->in.vwv,VWV(1)+1);
transport->negotiate.max_xmit = IVAL(req->in.vwv,VWV(3)+1);
transport->negotiate.sesskey = IVAL(req->in.vwv,VWV(7)+1);
transport->negotiate.capabilities = IVAL(req->in.vwv,VWV(9)+1);
/* this time arrives in real GMT */
ntt = smbcli_pull_nttime(req->in.vwv, VWV(11)+1);
transport->negotiate.server_time = nt_time_to_unix(ntt);
transport->negotiate.server_zone = SVALS(req->in.vwv,VWV(15)+1) * 60;
transport->negotiate.key_len = CVAL(req->in.vwv,VWV(16)+1);
if (transport->negotiate.capabilities & CAP_EXTENDED_SECURITY) {
if (req->in.data_size < 16) {
goto failed;
}
transport->negotiate.server_guid = smbcli_req_pull_blob(&req->in.bufinfo, transport, req->in.data, 16);
transport->negotiate.secblob = smbcli_req_pull_blob(&req->in.bufinfo, transport, req->in.data + 16, req->in.data_size - 16);
} else {
if (req->in.data_size < (transport->negotiate.key_len)) {
goto failed;
}
transport->negotiate.secblob = smbcli_req_pull_blob(&req->in.bufinfo, transport, req->in.data, transport->negotiate.key_len);
smbcli_req_pull_string(&req->in.bufinfo, transport, &transport->negotiate.server_domain,
req->in.data+transport->negotiate.key_len,
req->in.data_size-transport->negotiate.key_len, STR_UNICODE|STR_NOALIGN);
/* here comes the server name */
}
if (transport->negotiate.capabilities & CAP_RAW_MODE) {
transport->negotiate.readbraw_supported = true;
transport->negotiate.writebraw_supported = true;
}
if (transport->negotiate.capabilities & CAP_LOCK_AND_READ)
transport->negotiate.lockread_supported = true;
} else if (transport->negotiate.protocol >= PROTOCOL_LANMAN1) {
SMBCLI_CHECK_WCT(req, 13);
transport->negotiate.sec_mode = SVAL(req->in.vwv,VWV(1));
transport->negotiate.max_xmit = SVAL(req->in.vwv,VWV(2));
transport->negotiate.sesskey = IVAL(req->in.vwv,VWV(6));
transport->negotiate.server_zone = SVALS(req->in.vwv,VWV(10)) * 60;
/* this time is converted to GMT by raw_pull_dos_date */
transport->negotiate.server_time = raw_pull_dos_date(transport,
req->in.vwv+VWV(8));
if ((SVAL(req->in.vwv,VWV(5)) & 0x1)) {
transport->negotiate.readbraw_supported = 1;
}
if ((SVAL(req->in.vwv,VWV(5)) & 0x2)) {
transport->negotiate.writebraw_supported = 1;
}
transport->negotiate.secblob = smbcli_req_pull_blob(&req->in.bufinfo, transport,
req->in.data, req->in.data_size);
} else {
/* the old core protocol */
transport->negotiate.sec_mode = 0;
transport->negotiate.server_time = time(NULL);
transport->negotiate.max_xmit = transport->options.max_xmit;
transport->negotiate.server_zone = get_time_zone(transport->negotiate.server_time);
}
/* a way to force ascii SMB */
if (!transport->options.unicode) {
transport->negotiate.capabilities &= ~CAP_UNICODE;
}
if (!transport->options.ntstatus_support) {
transport->negotiate.capabilities &= ~CAP_STATUS32;
}
if (!transport->options.use_level2_oplocks) {
transport->negotiate.capabilities &= ~CAP_LEVEL_II_OPLOCKS;
}
failed:
return smbcli_request_destroy(req);
}
BOOL cli_negprot(struct cli_state *cli)
{
char *p;
int numprots;
int plength;
memset(cli->outbuf,'\0',smb_size);
/* setup the protocol strings */
for (plength=0,numprots=0;
prots[numprots].name && prots[numprots].prot<=cli->protocol;
numprots++)
plength += strlen(prots[numprots].name)+2;
set_message(cli->outbuf,0,plength,True);
p = smb_buf(cli->outbuf);
for (numprots=0;
prots[numprots].name && prots[numprots].prot<=cli->protocol;
numprots++) {
*p++ = 2;
p += clistr_push(cli, p, prots[numprots].name, -1, STR_CONVERT|STR_TERMINATE);
}
SCVAL(cli->outbuf,smb_com,SMBnegprot);
cli_setup_packet(cli);
SCVAL(smb_buf(cli->outbuf),0,2);
cli_send_smb(cli);
if (!cli_receive_smb(cli))
return False;
show_msg(cli->inbuf);
if (cli_is_error(cli) ||
((int)SVAL(cli->inbuf,smb_vwv0) >= numprots)) {
return(False);
}
cli->protocol = prots[SVAL(cli->inbuf,smb_vwv0)].prot;
if (cli->protocol >= PROTOCOL_NT1) {
/* NT protocol */
cli->sec_mode = CVAL(cli->inbuf,smb_vwv1);
cli->max_mux = SVAL(cli->inbuf, smb_vwv1+1);
cli->max_xmit = IVAL(cli->inbuf,smb_vwv3+1);
cli->sesskey = IVAL(cli->inbuf,smb_vwv7+1);
cli->serverzone = SVALS(cli->inbuf,smb_vwv15+1);
cli->serverzone *= 60;
/* this time arrives in real GMT */
cli->servertime = interpret_long_date(cli->inbuf+smb_vwv11+1);
memcpy(cli->cryptkey,smb_buf(cli->inbuf),8);
cli->capabilities = IVAL(cli->inbuf,smb_vwv9+1);
if (cli->capabilities & CAP_RAW_MODE) {
cli->readbraw_supported = True;
cli->writebraw_supported = True;
}
/* work out if they sent us a workgroup */
if (smb_buflen(cli->inbuf) > 8) {
clistr_pull(cli, cli->server_domain,
smb_buf(cli->inbuf)+8, sizeof(cli->server_domain),
smb_buflen(cli->inbuf)-8, STR_UNICODE|STR_NOALIGN);
}
} else if (cli->protocol >= PROTOCOL_LANMAN1) {
cli->sec_mode = SVAL(cli->inbuf,smb_vwv1);
cli->max_xmit = SVAL(cli->inbuf,smb_vwv2);
cli->sesskey = IVAL(cli->inbuf,smb_vwv6);
cli->serverzone = SVALS(cli->inbuf,smb_vwv10);
cli->serverzone *= 60;
/* this time is converted to GMT by make_unix_date */
cli->servertime = make_unix_date(cli->inbuf+smb_vwv8);
cli->readbraw_supported = ((SVAL(cli->inbuf,smb_vwv5) & 0x1) != 0);
cli->writebraw_supported = ((SVAL(cli->inbuf,smb_vwv5) & 0x2) != 0);
memcpy(cli->cryptkey,smb_buf(cli->inbuf),8);
} else {
/* the old core protocol */
cli->sec_mode = 0;
cli->serverzone = TimeDiff(time(NULL));
}
cli->max_xmit = MIN(cli->max_xmit, CLI_BUFFER_SIZE);
/* a way to force ascii SMB */
if (getenv("CLI_FORCE_ASCII")) {
cli->capabilities &= ~CAP_UNICODE;
}
return True;
}
