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samba-mirror/source3/nmbd/nmbd_processlogon.c
2009-05-28 12:22:41 +02:00

933 lines
24 KiB
C

/*
Unix SMB/CIFS implementation.
NBT netbios routines and daemon - version 2
Copyright (C) Andrew Tridgell 1994-1998
Copyright (C) Luke Kenneth Casson Leighton 1994-1998
Copyright (C) Jeremy Allison 1994-2003
Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2002
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
Revision History:
*/
#include "includes.h"
#include "../libcli/netlogon.h"
#include "../libcli/cldap/cldap.h"
#include "../lib/tsocket/tsocket.h"
struct sam_database_info {
uint32 index;
uint32 serial_lo, serial_hi;
uint32 date_lo, date_hi;
};
/**
* check whether the client belongs to the hosts
* for which initial logon should be delayed...
*/
static bool delay_logon(const char *peer_name, const char *peer_addr)
{
const char **delay_list = lp_init_logon_delayed_hosts();
const char *peer[2];
if (delay_list == NULL) {
return False;
}
peer[0] = peer_name;
peer[1] = peer_addr;
return list_match(delay_list, (const char *)peer, client_match);
}
static void delayed_init_logon_handler(struct event_context *event_ctx,
struct timed_event *te,
struct timeval now,
void *private_data)
{
struct packet_struct *p = (struct packet_struct *)private_data;
DEBUG(10, ("delayed_init_logon_handler (%lx): re-queuing packet.\n",
(unsigned long)te));
queue_packet(p);
TALLOC_FREE(te);
}
struct nmbd_proxy_logon_context {
struct cldap_socket *cldap_sock;
};
static struct nmbd_proxy_logon_context *global_nmbd_proxy_logon;
bool initialize_nmbd_proxy_logon(void)
{
const char *cldap_server = lp_parm_const_string(-1, "nmbd_proxy_logon",
"cldap_server", NULL);
struct nmbd_proxy_logon_context *ctx;
NTSTATUS status;
struct in_addr addr;
char addrstr[INET_ADDRSTRLEN];
const char *server_str;
int ret;
struct tsocket_address *server_addr;
if (!cldap_server) {
return true;
}
addr = interpret_addr2(cldap_server);
server_str = inet_ntop(AF_INET, &addr,
addrstr, sizeof(addrstr));
if (!server_str || strcmp("0.0.0.0", server_str) == 0) {
DEBUG(0,("Failed to resolve[%s] for nmbd_proxy_logon\n",
cldap_server));
return false;
}
ctx = talloc_zero(nmbd_event_context(),
struct nmbd_proxy_logon_context);
if (!ctx) {
return false;
}
ret = tsocket_address_inet_from_strings(ctx, "ipv4",
server_str, LDAP_PORT,
&server_addr);
if (ret != 0) {
TALLOC_FREE(ctx);
status = map_nt_error_from_unix(errno);
DEBUG(0,("Failed to create cldap tsocket_address for %s - %s\n",
server_str, nt_errstr(status)));
return false;
}
/* we create a connected udp socket */
status = cldap_socket_init(ctx, nmbd_event_context(), NULL,
server_addr, &ctx->cldap_sock);
TALLOC_FREE(server_addr);
if (!NT_STATUS_IS_OK(status)) {
TALLOC_FREE(ctx);
DEBUG(0,("failed to create cldap socket for %s: %s\n",
server_str, nt_errstr(status)));
return false;
}
global_nmbd_proxy_logon = ctx;
return true;
}
struct nmbd_proxy_logon_state {
struct in_addr local_ip;
struct packet_struct *p;
const char *remote_name;
uint8_t remote_name_type;
const char *remote_mailslot;
struct nbt_netlogon_packet req;
struct nbt_netlogon_response resp;
struct cldap_netlogon io;
};
static int nmbd_proxy_logon_state_destructor(struct nmbd_proxy_logon_state *s)
{
s->p->locked = false;
free_packet(s->p);
return 0;
}
static void nmbd_proxy_logon_done(struct tevent_req *subreq);
static void nmbd_proxy_logon(struct nmbd_proxy_logon_context *ctx,
struct in_addr local_ip,
struct packet_struct *p,
uint8_t *buf,
uint32_t len)
{
struct nmbd_proxy_logon_state *state;
enum ndr_err_code ndr_err;
DATA_BLOB blob = data_blob_const(buf, len);
const char *computer_name = NULL;
const char *mailslot_name = NULL;
const char *user_name = NULL;
const char *domain_sid = NULL;
uint32_t acct_control = 0;
uint32_t nt_version = 0;
struct tevent_req *subreq;
fstring source_name;
struct dgram_packet *dgram = &p->packet.dgram;
state = TALLOC_ZERO_P(ctx, struct nmbd_proxy_logon_state);
if (!state) {
DEBUG(0,("failed to allocate nmbd_proxy_logon_state\n"));
return;
}
pull_ascii_nstring(source_name, sizeof(source_name), dgram->source_name.name);
state->remote_name = talloc_strdup(state, source_name);
state->remote_name_type = dgram->source_name.name_type,
state->local_ip = local_ip;
state->p = p;
ndr_err = ndr_pull_struct_blob(
&blob, state, NULL, &state->req,
(ndr_pull_flags_fn_t)ndr_pull_nbt_netlogon_packet);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
DEBUG(0,("failed parse nbt_netlogon_packet: %s\n",
nt_errstr(status)));
TALLOC_FREE(state);
return;
}
if (DEBUGLEVEL >= 10) {
DEBUG(10, ("nmbd_proxy_logon:\n"));
NDR_PRINT_DEBUG(nbt_netlogon_packet, &state->req);
}
switch (state->req.command) {
case LOGON_SAM_LOGON_REQUEST:
computer_name = state->req.req.logon.computer_name;
user_name = state->req.req.logon.user_name;
mailslot_name = state->req.req.logon.mailslot_name;
acct_control = state->req.req.logon.acct_control;
if (state->req.req.logon.sid_size > 0) {
domain_sid = dom_sid_string(state,
&state->req.req.logon.sid);
if (!domain_sid) {
DEBUG(0,("failed to get a string for sid\n"));
TALLOC_FREE(state);
return;
}
}
nt_version = state->req.req.logon.nt_version;
break;
default:
/* this can't happen as the caller already checks the command */
break;
}
state->remote_mailslot = mailslot_name;
if (user_name && strlen(user_name) == 0) {
user_name = NULL;
}
if (computer_name && strlen(computer_name) == 0) {
computer_name = NULL;
}
/*
* as the socket is connected,
* we don't need to specify the destination
*/
state->io.in.dest_address = NULL;
state->io.in.dest_port = 0;
state->io.in.realm = NULL;
state->io.in.host = computer_name;
state->io.in.user = user_name;
state->io.in.domain_guid = NULL;
state->io.in.domain_sid = domain_sid;
state->io.in.acct_control = acct_control;
state->io.in.version = nt_version;
state->io.in.map_response = false;
subreq = cldap_netlogon_send(state,
ctx->cldap_sock,
&state->io);
if (!subreq) {
DEBUG(0,("failed to send cldap netlogon call\n"));
TALLOC_FREE(state);
return;
}
tevent_req_set_callback(subreq, nmbd_proxy_logon_done, state);
/* we reply async */
state->p->locked = true;
talloc_set_destructor(state, nmbd_proxy_logon_state_destructor);
}
static void nmbd_proxy_logon_done(struct tevent_req *subreq)
{
struct nmbd_proxy_logon_state *state =
tevent_req_callback_data(subreq,
struct nmbd_proxy_logon_state);
NTSTATUS status;
DATA_BLOB response = data_blob_null;
status = cldap_netlogon_recv(subreq, NULL, state, &state->io);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0,("failed to recv cldap netlogon call: %s\n",
nt_errstr(status)));
TALLOC_FREE(state);
return;
}
status = push_netlogon_samlogon_response(&response, state, NULL,
&state->io.out.netlogon);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0,("failed to push netlogon_samlogon_response: %s\n",
nt_errstr(status)));
TALLOC_FREE(state);
return;
}
send_mailslot(true, state->remote_mailslot,
(char *)response.data, response.length,
global_myname(), 0x0,
state->remote_name,
state->remote_name_type,
state->p->ip,
state->local_ip,
state->p->port);
TALLOC_FREE(state);
}
/****************************************************************************
Process a domain logon packet
**************************************************************************/
void process_logon_packet(struct packet_struct *p, char *buf,int len,
const char *mailslot)
{
struct dgram_packet *dgram = &p->packet.dgram;
fstring my_name;
fstring reply_name;
char outbuf[1024];
int code;
uint16 token = 0;
uint32 ntversion = 0;
uint16 lmnttoken = 0;
uint16 lm20token = 0;
uint32 domainsidsize;
bool short_request = False;
char *getdc;
char *uniuser; /* Unicode user name. */
fstring ascuser;
char *unicomp; /* Unicode computer name. */
size_t size;
struct sockaddr_storage ss;
const struct sockaddr_storage *pss;
struct in_addr ip;
in_addr_to_sockaddr_storage(&ss, p->ip);
pss = iface_ip((struct sockaddr *)&ss);
if (!pss) {
DEBUG(5,("process_logon_packet:can't find outgoing interface "
"for packet from IP %s\n",
inet_ntoa(p->ip) ));
return;
}
ip = ((struct sockaddr_in *)pss)->sin_addr;
memset(outbuf, 0, sizeof(outbuf));
if (!lp_domain_logons()) {
DEBUG(5,("process_logon_packet: Logon packet received from IP %s and domain \
logons are not enabled.\n", inet_ntoa(p->ip) ));
return;
}
fstrcpy(my_name, global_myname());
code = get_safe_SVAL(buf,len,buf,0,-1);
DEBUG(4,("process_logon_packet: Logon from %s: code = 0x%x\n", inet_ntoa(p->ip), code));
switch (code) {
case 0:
{
fstring mach_str, user_str, getdc_str;
char *q = buf + 2;
char *machine = q;
char *user = skip_string(buf,len,machine);
if (!user || PTR_DIFF(user, buf) >= len) {
DEBUG(0,("process_logon_packet: bad packet\n"));
return;
}
getdc = skip_string(buf,len,user);
if (!getdc || PTR_DIFF(getdc, buf) >= len) {
DEBUG(0,("process_logon_packet: bad packet\n"));
return;
}
q = skip_string(buf,len,getdc);
if (!q || PTR_DIFF(q + 5, buf) > len) {
DEBUG(0,("process_logon_packet: bad packet\n"));
return;
}
token = SVAL(q,3);
fstrcpy(reply_name,my_name);
pull_ascii_fstring(mach_str, machine);
pull_ascii_fstring(user_str, user);
pull_ascii_fstring(getdc_str, getdc);
DEBUG(5,("process_logon_packet: Domain login request from %s at IP %s user=%s token=%x\n",
mach_str,inet_ntoa(p->ip),user_str,token));
q = outbuf;
SSVAL(q, 0, 6);
q += 2;
fstrcpy(reply_name, "\\\\");
fstrcat(reply_name, my_name);
size = push_ascii(q,reply_name,
sizeof(outbuf)-PTR_DIFF(q, outbuf),
STR_TERMINATE);
if (size == (size_t)-1) {
return;
}
q = skip_string(outbuf,sizeof(outbuf),q); /* PDC name */
SSVAL(q, 0, token);
q += 2;
dump_data(4, (uint8 *)outbuf, PTR_DIFF(q, outbuf));
send_mailslot(True, getdc_str,
outbuf,PTR_DIFF(q,outbuf),
global_myname(), 0x0,
mach_str,
dgram->source_name.name_type,
p->ip, ip, p->port);
break;
}
case LOGON_PRIMARY_QUERY:
{
fstring mach_str, getdc_str;
fstring source_name;
char *q = buf + 2;
char *machine = q;
if (!lp_domain_master()) {
/* We're not Primary Domain Controller -- ignore this */
return;
}
getdc = skip_string(buf,len,machine);
if (!getdc || PTR_DIFF(getdc, buf) >= len) {
DEBUG(0,("process_logon_packet: bad packet\n"));
return;
}
q = skip_string(buf,len,getdc);
if (!q || PTR_DIFF(q, buf) >= len) {
DEBUG(0,("process_logon_packet: bad packet\n"));
return;
}
q = ALIGN2(q, buf);
/* At this point we can work out if this is a W9X or NT style
request. Experiments show that the difference is wether the
packet ends here. For a W9X request we now end with a pair of
bytes (usually 0xFE 0xFF) whereas with NT we have two further
strings - the following is a simple way of detecting this */
if (len - PTR_DIFF(q, buf) <= 3) {
short_request = True;
} else {
unicomp = q;
if (PTR_DIFF(q, buf) >= len) {
DEBUG(0,("process_logon_packet: bad packet\n"));
return;
}
/* A full length (NT style) request */
q = skip_unibuf(unicomp, PTR_DIFF(buf + len, unicomp));
if (PTR_DIFF(q, buf) >= len) {
DEBUG(0,("process_logon_packet: bad packet\n"));
return;
}
if (len - PTR_DIFF(q, buf) > 8) {
/* with NT5 clients we can sometimes
get additional data - a length specificed string
containing the domain name, then 16 bytes of
data (no idea what it is) */
int dom_len = CVAL(q, 0);
q++;
if (dom_len != 0) {
q += dom_len + 1;
}
q += 16;
}
if (PTR_DIFF(q + 8, buf) > len) {
DEBUG(0,("process_logon_packet: bad packet\n"));
return;
}
ntversion = IVAL(q, 0);
lmnttoken = SVAL(q, 4);
lm20token = SVAL(q, 6);
}
/* Construct reply. */
q = outbuf;
SSVAL(q, 0, NETLOGON_RESPONSE_FROM_PDC);
q += 2;
fstrcpy(reply_name,my_name);
size = push_ascii(q, reply_name,
sizeof(outbuf)-PTR_DIFF(q, outbuf),
STR_TERMINATE);
if (size == (size_t)-1) {
return;
}
q = skip_string(outbuf,sizeof(outbuf),q); /* PDC name */
/* PDC and domain name */
if (!short_request) {
/* Make a full reply */
q = ALIGN2(q, outbuf);
q += dos_PutUniCode(q, my_name,
sizeof(outbuf) - PTR_DIFF(q, outbuf),
True); /* PDC name */
q += dos_PutUniCode(q, lp_workgroup(),
sizeof(outbuf) - PTR_DIFF(q, outbuf),
True); /* Domain name*/
if (sizeof(outbuf) - PTR_DIFF(q, outbuf) < 8) {
return;
}
SIVAL(q, 0, 1); /* our nt version */
SSVAL(q, 4, 0xffff); /* our lmnttoken */
SSVAL(q, 6, 0xffff); /* our lm20token */
q += 8;
}
/* RJS, 21-Feb-2000, we send a short reply if the request was short */
pull_ascii_fstring(mach_str, machine);
DEBUG(5,("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",
mach_str,inet_ntoa(p->ip), reply_name, lp_workgroup(),
NETLOGON_RESPONSE_FROM_PDC, (uint32)ntversion, (uint32)lmnttoken,
(uint32)lm20token ));
dump_data(4, (uint8 *)outbuf, PTR_DIFF(q, outbuf));
pull_ascii_fstring(getdc_str, getdc);
pull_ascii_nstring(source_name, sizeof(source_name), dgram->source_name.name);
send_mailslot(True, getdc_str,
outbuf,PTR_DIFF(q,outbuf),
global_myname(), 0x0,
source_name,
dgram->source_name.name_type,
p->ip, ip, p->port);
return;
}
case LOGON_SAM_LOGON_REQUEST:
{
fstring getdc_str;
fstring source_name;
char *source_addr;
char *q = buf + 2;
fstring asccomp;
if (global_nmbd_proxy_logon) {
nmbd_proxy_logon(global_nmbd_proxy_logon,
ip, p, (uint8_t *)buf, len);
return;
}
q += 2;
if (PTR_DIFF(q, buf) >= len) {
DEBUG(0,("process_logon_packet: bad packet\n"));
return;
}
unicomp = q;
uniuser = skip_unibuf(unicomp, PTR_DIFF(buf+len, unicomp));
if (PTR_DIFF(uniuser, buf) >= len) {
DEBUG(0,("process_logon_packet: bad packet\n"));
return;
}
getdc = skip_unibuf(uniuser,PTR_DIFF(buf+len, uniuser));
if (PTR_DIFF(getdc, buf) >= len) {
DEBUG(0,("process_logon_packet: bad packet\n"));
return;
}
q = skip_string(buf,len,getdc);
if (!q || PTR_DIFF(q + 8, buf) >= len) {
DEBUG(0,("process_logon_packet: bad packet\n"));
return;
}
q += 4; /* Account Control Bits - indicating username type */
domainsidsize = IVAL(q, 0);
q += 4;
DEBUG(5,("process_logon_packet: LOGON_SAM_LOGON_REQUEST sidsize %d, len = %d\n", domainsidsize, len));
if (domainsidsize < (len - PTR_DIFF(q, buf)) && (domainsidsize != 0)) {
q += domainsidsize;
q = ALIGN4(q, buf);
}
DEBUG(5,("process_logon_packet: len = %d PTR_DIFF(q, buf) = %ld\n", len, (unsigned long)PTR_DIFF(q, buf) ));
if (len - PTR_DIFF(q, buf) > 8) {
/* with NT5 clients we can sometimes
get additional data - a length specificed string
containing the domain name, then 16 bytes of
data (no idea what it is) */
int dom_len = CVAL(q, 0);
q++;
if (dom_len < (len - PTR_DIFF(q, buf)) && (dom_len != 0)) {
q += dom_len + 1;
}
q += 16;
}
if (PTR_DIFF(q + 8, buf) > len) {
DEBUG(0,("process_logon_packet: bad packet\n"));
return;
}
ntversion = IVAL(q, 0);
lmnttoken = SVAL(q, 4);
lm20token = SVAL(q, 6);
q += 8;
DEBUG(3,("process_logon_packet: LOGON_SAM_LOGON_REQUEST sidsize %d ntv %d\n", domainsidsize, ntversion));
/*
* we respond regadless of whether the machine is in our password
* database. If it isn't then we let smbd send an appropriate error.
* Let's ignore the SID.
*/
pull_ucs2_fstring(ascuser, uniuser);
pull_ucs2_fstring(asccomp, unicomp);
DEBUG(5,("process_logon_packet: LOGON_SAM_LOGON_REQUEST user %s\n", ascuser));
fstrcpy(reply_name, "\\\\"); /* Here it wants \\LOGONSERVER. */
fstrcat(reply_name, my_name);
DEBUG(5,("process_logon_packet: LOGON_SAM_LOGON_REQUEST request from %s(%s) for %s, returning logon svr %s domain %s code %x token=%x\n",
asccomp,inet_ntoa(p->ip), ascuser, reply_name, lp_workgroup(),
LOGON_SAM_LOGON_RESPONSE ,lmnttoken));
/* Construct reply. */
q = outbuf;
/* we want the simple version unless we are an ADS PDC..which means */
/* never, at least for now */
if ((ntversion < 11) || (SEC_ADS != lp_security()) || (ROLE_DOMAIN_PDC != lp_server_role())) {
if (SVAL(uniuser, 0) == 0) {
SSVAL(q, 0, LOGON_SAM_LOGON_USER_UNKNOWN); /* user unknown */
} else {
SSVAL(q, 0, LOGON_SAM_LOGON_RESPONSE);
}
q += 2;
q += dos_PutUniCode(q, reply_name,
sizeof(outbuf) - PTR_DIFF(q, outbuf),
True);
q += dos_PutUniCode(q, ascuser,
sizeof(outbuf) - PTR_DIFF(q, outbuf),
True);
q += dos_PutUniCode(q, lp_workgroup(),
sizeof(outbuf) - PTR_DIFF(q, outbuf),
True);
}
#ifdef HAVE_ADS
else {
struct GUID domain_guid;
UUID_FLAT flat_guid;
char *domain;
char *hostname;
char *component, *dc, *q1;
char *q_orig = q;
int str_offset;
char *saveptr = NULL;
domain = get_mydnsdomname(talloc_tos());
if (!domain) {
DEBUG(2,
("get_mydnsdomname failed.\n"));
return;
}
hostname = get_myname(talloc_tos());
if (!hostname) {
DEBUG(2,
("get_myname failed.\n"));
return;
}
if (sizeof(outbuf) - PTR_DIFF(q, outbuf) < 8) {
return;
}
if (SVAL(uniuser, 0) == 0) {
SIVAL(q, 0, LOGON_SAM_LOGON_USER_UNKNOWN_EX); /* user unknown */
} else {
SIVAL(q, 0, LOGON_SAM_LOGON_RESPONSE_EX);
}
q += 4;
SIVAL(q, 0, NBT_SERVER_PDC|NBT_SERVER_GC|NBT_SERVER_LDAP|NBT_SERVER_DS|
NBT_SERVER_KDC|NBT_SERVER_TIMESERV|NBT_SERVER_CLOSEST|NBT_SERVER_WRITABLE);
q += 4;
/* Push Domain GUID */
if (sizeof(outbuf) - PTR_DIFF(q, outbuf) < UUID_FLAT_SIZE) {
return;
}
if (False == secrets_fetch_domain_guid(domain, &domain_guid)) {
DEBUG(2, ("Could not fetch DomainGUID for %s\n", domain));
return;
}
smb_uuid_pack(domain_guid, &flat_guid);
memcpy(q, &flat_guid.info, UUID_FLAT_SIZE);
q += UUID_FLAT_SIZE;
/* Forest */
str_offset = q - q_orig;
dc = domain;
q1 = q;
while ((component = strtok_r(dc, ".", &saveptr)) != NULL) {
dc = NULL;
if (sizeof(outbuf) - PTR_DIFF(q, outbuf) < 1) {
return;
}
size = push_ascii(&q[1], component,
sizeof(outbuf) - PTR_DIFF(q+1, outbuf),
0);
if (size == (size_t)-1 || size > 0xff) {
return;
}
SCVAL(q, 0, size);
q += (size + 1);
}
/* Unk0 */
if (sizeof(outbuf) - PTR_DIFF(q, outbuf) < 4) {
return;
}
SCVAL(q, 0, 0);
q++;
/* Domain */
SCVAL(q, 0, 0xc0 | ((str_offset >> 8) & 0x3F));
SCVAL(q, 1, str_offset & 0xFF);
q += 2;
/* Hostname */
size = push_ascii(&q[1], hostname,
sizeof(outbuf) - PTR_DIFF(q+1, outbuf),
0);
if (size == (size_t)-1 || size > 0xff) {
return;
}
SCVAL(q, 0, size);
q += (size + 1);
if (sizeof(outbuf) - PTR_DIFF(q, outbuf) < 3) {
return;
}
SCVAL(q, 0, 0xc0 | ((str_offset >> 8) & 0x3F));
SCVAL(q, 1, str_offset & 0xFF);
q += 2;
/* NETBIOS of domain */
size = push_ascii(&q[1], lp_workgroup(),
sizeof(outbuf) - PTR_DIFF(q+1, outbuf),
STR_UPPER);
if (size == (size_t)-1 || size > 0xff) {
return;
}
SCVAL(q, 0, size);
q += (size + 1);
/* Unk1 */
if (sizeof(outbuf) - PTR_DIFF(q, outbuf) < 2) {
return;
}
SCVAL(q, 0, 0);
q++;
/* NETBIOS of hostname */
size = push_ascii(&q[1], my_name,
sizeof(outbuf) - PTR_DIFF(q+1, outbuf),
0);
if (size == (size_t)-1 || size > 0xff) {
return;
}
SCVAL(q, 0, size);
q += (size + 1);
/* Unk2 */
if (sizeof(outbuf) - PTR_DIFF(q, outbuf) < 4) {
return;
}
SCVAL(q, 0, 0);
q++;
/* User name */
if (SVAL(uniuser, 0) != 0) {
size = push_ascii(&q[1], ascuser,
sizeof(outbuf) - PTR_DIFF(q+1, outbuf),
0);
if (size == (size_t)-1 || size > 0xff) {
return;
}
SCVAL(q, 0, size);
q += (size + 1);
}
q_orig = q;
/* Site name */
if (sizeof(outbuf) - PTR_DIFF(q, outbuf) < 1) {
return;
}
size = push_ascii(&q[1], "Default-First-Site-Name",
sizeof(outbuf) - PTR_DIFF(q+1, outbuf),
0);
if (size == (size_t)-1 || size > 0xff) {
return;
}
SCVAL(q, 0, size);
q += (size + 1);
if (sizeof(outbuf) - PTR_DIFF(q, outbuf) < 18) {
return;
}
/* Site name (2) */
str_offset = q - q_orig;
SCVAL(q, 0, 0xc0 | ((str_offset >> 8) & 0x3F));
SCVAL(q, 1, str_offset & 0xFF);
q += 2;
SCVAL(q, 0, PTR_DIFF(q,q1));
SCVAL(q, 1, 0x10); /* unknown */
SIVAL(q, 0, 0x00000002);
q += 4; /* unknown */
SIVAL(q, 0, ntohl(ip.s_addr));
q += 4;
SIVAL(q, 0, 0x00000000);
q += 4; /* unknown */
SIVAL(q, 0, 0x00000000);
q += 4; /* unknown */
}
#endif
if (sizeof(outbuf) - PTR_DIFF(q, outbuf) < 8) {
return;
}
/* tell the client what version we are */
SIVAL(q, 0, ((ntversion < 11) || (SEC_ADS != lp_security())) ? 1 : 13);
/* our ntversion */
SSVAL(q, 4, 0xffff); /* our lmnttoken */
SSVAL(q, 6, 0xffff); /* our lm20token */
q += 8;
dump_data(4, (uint8 *)outbuf, PTR_DIFF(q, outbuf));
pull_ascii_fstring(getdc_str, getdc);
pull_ascii_nstring(source_name, sizeof(source_name), dgram->source_name.name);
source_addr = SMB_STRDUP(inet_ntoa(dgram->header.source_ip));
if (source_addr == NULL) {
DEBUG(3, ("out of memory copying client"
" address string\n"));
return;
}
/*
* handle delay.
* packets requeued after delay are marked as
* locked.
*/
if ((p->locked == False) &&
(strlen(ascuser) == 0) &&
delay_logon(source_name, source_addr))
{
struct timeval when;
DEBUG(3, ("process_logon_packet: "
"delaying initial logon "
"reply for client %s(%s) for "
"%u milliseconds\n",
source_name, source_addr,
lp_init_logon_delay()));
when = timeval_current_ofs(0,
lp_init_logon_delay() * 1000);
p->locked = true;
event_add_timed(nmbd_event_context(),
NULL,
when,
delayed_init_logon_handler,
p);
} else {
DEBUG(3, ("process_logon_packet: "
"processing delayed initial "
"logon reply for client "
"%s(%s)\n",
source_name, source_addr));
p->locked = false;
send_mailslot(true, getdc,
outbuf,PTR_DIFF(q,outbuf),
global_myname(), 0x0,
source_name,
dgram->source_name.name_type,
p->ip, ip, p->port);
}
SAFE_FREE(source_addr);
break;
}
/* Announce change to UAS or SAM. Send by the domain controller when a
replication event is required. */
case NETLOGON_ANNOUNCE_UAS:
DEBUG(5, ("Got NETLOGON_ANNOUNCE_UAS\n"));
break;
default:
DEBUG(3,("process_logon_packet: Unknown domain request %d\n",code));
return;
}
}