nmbd_processlogon.c [plain text]
#include "includes.h"
extern pstring global_myname;
extern fstring global_myworkgroup;
void process_logon_packet(struct packet_struct *p,char *buf,int len,
char *mailslot)
{
struct dgram_packet *dgram = &p->packet.dgram;
pstring my_name;
fstring reply_name;
pstring outbuf;
int code;
uint16 token = 0;
uint32 ntversion = 0;
uint16 lmnttoken = 0;
uint16 lm20token = 0;
uint32 domainsidsize;
BOOL short_request = False;
char *getdc;
char *uniuser;
pstring ascuser;
char *unicomp;
START_PROFILE(domain_logon);
memset(outbuf, 0, sizeof(outbuf));
if (!lp_domain_logons())
{
DEBUG(3,("process_logon_packet: Logon packet received from IP %s and domain \
logons are not enabled.\n", inet_ntoa(p->ip) ));
goto done;
}
pstrcpy(my_name, global_myname);
strupper(my_name);
code = SVAL(buf,0);
DEBUG(1,("process_logon_packet: Logon from %s: code = 0x%x\n", inet_ntoa(p->ip), code));
switch (code)
{
case 0:
{
char *q = buf + 2;
char *machine = q;
char *user = skip_string(machine,1);
getdc = skip_string(user,1);
q = skip_string(getdc,1);
token = SVAL(q,3);
fstrcpy(reply_name,my_name);
DEBUG(3,("process_logon_packet: Domain login request from %s at IP %s user=%s token=%x\n",
machine,inet_ntoa(p->ip),user,token));
q = outbuf;
SSVAL(q, 0, 6);
q += 2;
fstrcpy(reply_name, "\\\\");
fstrcat(reply_name, my_name);
fstrcpy(q, reply_name); q = skip_string(q, 1);
SSVAL(q, 0, token);
q += 2;
dump_data(4, outbuf, PTR_DIFF(q, outbuf));
send_mailslot(True, getdc,
outbuf,PTR_DIFF(q,outbuf),
global_myname, 0x0,
machine,
dgram->source_name.name_type,
p->ip, *iface_ip(p->ip), p->port);
break;
}
case QUERYFORPDC:
{
char *q = buf + 2;
char *machine = q;
if (!lp_domain_master())
{
goto done;
}
getdc = skip_string(machine,1);
q = skip_string(getdc,1);
q = ALIGN2(q, buf);
if (len - PTR_DIFF(q, buf) <= 3) {
short_request = True;
} else {
unicomp = q;
q = skip_unibuf(unicomp, PTR_DIFF(buf + len, unicomp));
if (len - PTR_DIFF(q, buf) > 8) {
int dom_len = CVAL(q, 0);
q++;
if (dom_len != 0) {
q += dom_len + 1;
}
q += 16;
}
ntversion = IVAL(q, 0);
lmnttoken = SVAL(q, 4);
lm20token = SVAL(q, 6);
}
q = outbuf;
SSVAL(q, 0, QUERYFORPDC_R);
q += 2;
fstrcpy(reply_name,my_name);
fstrcpy(q, reply_name);
q = skip_string(q, 1);
if (!short_request)
{
q = ALIGN2(q, outbuf);
q += dos_PutUniCode(q, my_name, sizeof(pstring), True);
q += dos_PutUniCode(q, global_myworkgroup,sizeof(pstring), True);
SIVAL(q, 0, 1);
SSVAL(q, 4, 0xffff);
SSVAL(q, 6, 0xffff);
q += 8;
}
DEBUG(3,("process_logon_packet: GETDC request from %s at IP %s, \
reporting %s domain %s 0x%x ntversion=%x lm_nt token=%x lm_20 token=%x\n",
machine,inet_ntoa(p->ip), reply_name, global_myworkgroup,
QUERYFORPDC_R, (uint32)ntversion, (uint32)lmnttoken,
(uint32)lm20token ));
dump_data(4, outbuf, PTR_DIFF(q, outbuf));
send_mailslot(True, getdc,
outbuf,PTR_DIFF(q,outbuf),
global_myname, 0x0,
dgram->source_name.name,
dgram->source_name.name_type,
p->ip, *iface_ip(p->ip), p->port);
goto done;
}
case SAMLOGON:
{
char *q = buf + 2;
q += 2;
unicomp = q;
uniuser = skip_unibuf(unicomp, PTR_DIFF(buf+len, unicomp));
getdc = skip_unibuf(uniuser,PTR_DIFF(buf+len, uniuser));
q = skip_string(getdc,1);
q += 4;
domainsidsize = IVAL(q, 0);
q += 4;
DEBUG(3,("process_logon_packet: SAMLOGON sidsize %d, len = %d\n", domainsidsize, len));
if (domainsidsize < (len - PTR_DIFF(q, buf)) && (domainsidsize != 0)) {
q += domainsidsize;
q = ALIGN4(q, buf);
}
DEBUG(3,("process_logon_packet: len = %d PTR_DIFF(q, buf) = %d\n", len, PTR_DIFF(q, buf) ));
if (len - PTR_DIFF(q, buf) > 8) {
int dom_len = CVAL(q, 0);
q++;
if (dom_len < (len - PTR_DIFF(q, buf)) && (dom_len != 0)) {
q += dom_len + 1;
}
q += 16;
}
ntversion = IVAL(q, 0);
lmnttoken = SVAL(q, 4);
lm20token = SVAL(q, 6);
q += 8;
DEBUG(3,("process_logon_packet: SAMLOGON sidsize %d ntv %d\n", domainsidsize, ntversion));
pstrcpy(ascuser, dos_unistr(uniuser));
DEBUG(3,("process_logon_packet: SAMLOGON user %s\n", ascuser));
fstrcpy(reply_name,"\\\\");
fstrcpy(reply_name+2,my_name);
DEBUG(3,("process_logon_packet: SAMLOGON request from %s(%s) for %s, returning logon svr %s domain %s code %x token=%x\n",
dos_unistr(unicomp),inet_ntoa(p->ip), ascuser, reply_name, global_myworkgroup,
SAMLOGON_R ,lmnttoken));
q = outbuf;
if (SVAL(uniuser, 0) == 0) {
SSVAL(q, 0, SAMLOGON_UNK_R);
} else {
SSVAL(q, 0, SAMLOGON_R);
}
q += 2;
q += dos_PutUniCode(q, reply_name,sizeof(pstring), True);
q += dos_PutUniCode(q, ascuser, sizeof(pstring), True);
q += dos_PutUniCode(q, global_myworkgroup,sizeof(pstring), True);
SIVAL(q, 0, 1);
SSVAL(q, 4, 0xffff);
SSVAL(q, 6, 0xffff);
q += 8;
dump_data(4, outbuf, PTR_DIFF(q, outbuf));
send_mailslot(True, getdc,
outbuf,PTR_DIFF(q,outbuf),
global_myname, 0x0,
dgram->source_name.name,
dgram->source_name.name_type,
p->ip, *iface_ip(p->ip), p->port);
break;
}
default:
{
DEBUG(3,("process_logon_packet: Unknown domain request %d\n",code));
goto done;
}
}
done:
END_PROFILE(domain_logon);
}