static struct cli_state *server_cryptkey(TALLOC_CTX *mem_ctx)
{
struct cli_state *cli = NULL;
fstring desthost;
struct in_addr dest_ip;
const char *p;
char *pserver;
BOOL connected_ok = False;
if (!(cli = cli_initialise()))
return NULL;
/* security = server just can't function with spnego */
cli->use_spnego = False;
pserver = talloc_strdup(mem_ctx, lp_passwordserver());
p = pserver;
while(next_token( &p, desthost, LIST_SEP, sizeof(desthost))) {
standard_sub_basic(current_user_info.smb_name, current_user_info.domain,
desthost, sizeof(desthost));
strupper_m(desthost);
if(!resolve_name( desthost, &dest_ip, 0x20)) {
DEBUG(1,("server_cryptkey: Can't resolve address for %s\n",desthost));
continue;
}
if (ismyip(dest_ip)) {
DEBUG(1,("Password server loop - disabling password server %s\n",desthost));
continue;
}
/* we use a mutex to prevent two connections at once - when a
Win2k PDC get two connections where one hasn't completed a
session setup yet it will send a TCP reset to the first
connection (tridge) */
if (!grab_server_mutex(desthost)) {
return NULL;
}
if (cli_connect(cli, desthost, &dest_ip)) {
DEBUG(3,("connected to password server %s\n",desthost));
connected_ok = True;
break;
}
}
if (!connected_ok) {
release_server_mutex();
DEBUG(0,("password server not available\n"));
cli_shutdown(cli);
return NULL;
}
if (!attempt_netbios_session_request(&cli, global_myname(),
desthost, &dest_ip)) {
release_server_mutex();
DEBUG(1,("password server fails session request\n"));
cli_shutdown(cli);
return NULL;
}
if (strequal(desthost,myhostname())) {
exit_server_cleanly("Password server loop!");
}
DEBUG(3,("got session\n"));
if (!cli_negprot(cli)) {
DEBUG(1,("%s rejected the negprot\n",desthost));
release_server_mutex();
cli_shutdown(cli);
return NULL;
}
if (cli->protocol < PROTOCOL_LANMAN2 ||
!(cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL)) {
DEBUG(1,("%s isn't in user level security mode\n",desthost));
release_server_mutex();
cli_shutdown(cli);
return NULL;
}
/* Get the first session setup done quickly, to avoid silly
Win2k bugs. (The next connection to the server will kill
this one...
*/
if (!NT_STATUS_IS_OK(cli_session_setup(cli, "", "", 0, "", 0,
""))) {
DEBUG(0,("%s rejected the initial session setup (%s)\n",
desthost, cli_errstr(cli)));
release_server_mutex();
cli_shutdown(cli);
return NULL;
}
release_server_mutex();
DEBUG(3,("password server OK\n"));
return cli;
}
static struct cli_state *server_cryptkey(TALLOC_CTX *mem_ctx)
{
struct cli_state *cli = NULL;
char *desthost = NULL;
struct sockaddr_storage dest_ss;
const char *p;
char *pserver = NULL;
bool connected_ok = False;
struct named_mutex *mutex = NULL;
NTSTATUS status;
if (!(cli = cli_initialise()))
return NULL;
/* security = server just can't function with spnego */
cli->use_spnego = False;
pserver = talloc_strdup(mem_ctx, lp_passwordserver());
p = pserver;
while(next_token_talloc(mem_ctx, &p, &desthost, LIST_SEP)) {
desthost = talloc_sub_basic(mem_ctx,
current_user_info.smb_name,
current_user_info.domain,
desthost);
if (!desthost) {
return NULL;
}
strupper_m(desthost);
if(!resolve_name( desthost, &dest_ss, 0x20, false)) {
DEBUG(1,("server_cryptkey: Can't resolve address for %s\n",desthost));
continue;
}
if (ismyaddr((struct sockaddr *)&dest_ss)) {
DEBUG(1,("Password server loop - disabling password server %s\n",desthost));
continue;
}
/* we use a mutex to prevent two connections at once - when a
Win2k PDC get two connections where one hasn't completed a
session setup yet it will send a TCP reset to the first
connection (tridge) */
mutex = grab_named_mutex(talloc_tos(), desthost, 10);
if (mutex == NULL) {
cli_shutdown(cli);
return NULL;
}
status = cli_connect(cli, desthost, &dest_ss);
if (NT_STATUS_IS_OK(status)) {
DEBUG(3,("connected to password server %s\n",desthost));
connected_ok = True;
break;
}
DEBUG(10,("server_cryptkey: failed to connect to server %s. Error %s\n",
desthost, nt_errstr(status) ));
TALLOC_FREE(mutex);
}
if (!connected_ok) {
DEBUG(0,("password server not available\n"));
cli_shutdown(cli);
return NULL;
}
if (!attempt_netbios_session_request(&cli, global_myname(),
desthost, &dest_ss)) {
TALLOC_FREE(mutex);
DEBUG(1,("password server fails session request\n"));
cli_shutdown(cli);
return NULL;
}
if (strequal(desthost,myhostname())) {
exit_server_cleanly("Password server loop!");
}
DEBUG(3,("got session\n"));
status = cli_negprot(cli);
if (!NT_STATUS_IS_OK(status)) {
TALLOC_FREE(mutex);
DEBUG(1, ("%s rejected the negprot: %s\n",
desthost, nt_errstr(status)));
cli_shutdown(cli);
return NULL;
}
if (cli->protocol < PROTOCOL_LANMAN2 ||
!(cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL)) {
TALLOC_FREE(mutex);
DEBUG(1,("%s isn't in user level security mode\n",desthost));
cli_shutdown(cli);
return NULL;
}
/* Get the first session setup done quickly, to avoid silly
Win2k bugs. (The next connection to the server will kill
this one...
*/
status = cli_session_setup(cli, "", "", 0, "", 0, "");
if (!NT_STATUS_IS_OK(status)) {
TALLOC_FREE(mutex);
DEBUG(0,("%s rejected the initial session setup (%s)\n",
desthost, nt_errstr(status)));
cli_shutdown(cli);
return NULL;
}
TALLOC_FREE(mutex);
DEBUG(3,("password server OK\n"));
return cli;
}