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samba-mirror/source3/utils/net_rpc_join.c
Jeremy Allison f88b7a076b This is a large patch (sorry). Migrate from struct in_addr
to struct sockaddr_storage in most places that matter (ie.
not the nmbd and NetBIOS lookups). This passes make test
on an IPv4 box, but I'll have to do more work/testing on
IPv6 enabled boxes. This should now give us a framework
for testing and finishing the IPv6 migration. It's at
the state where someone with a working IPv6 setup should
(theorecically) be able to type :
smbclient //ipv6-address/share
and have it work.
Jeremy.
(This used to be commit 98e154c312)
2007-10-24 14:16:54 -07:00

474 lines
13 KiB
C

/*
Samba Unix/Linux SMB client library
Distributed SMB/CIFS Server Management Utility
Copyright (C) 2001 Andrew Bartlett (abartlet@samba.org)
Copyright (C) Tim Potter 2001
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/>. */
#include "includes.h"
#include "utils/net.h"
/* Macro for checking RPC error codes to make things more readable */
#define CHECK_RPC_ERR(rpc, msg) \
if (!NT_STATUS_IS_OK(result = rpc)) { \
DEBUG(0, (msg ": %s\n", nt_errstr(result))); \
goto done; \
}
#define CHECK_RPC_ERR_DEBUG(rpc, debug_args) \
if (!NT_STATUS_IS_OK(result = rpc)) { \
DEBUG(0, debug_args); \
goto done; \
}
/**
* confirm that a domain join is still valid
*
* @return A shell status integer (0 for success)
*
**/
NTSTATUS net_rpc_join_ok(const char *domain, const char *server,
struct sockaddr_storage *pss)
{
enum security_types sec;
unsigned int conn_flags = NET_FLAGS_PDC;
uint32 neg_flags = NETLOGON_NEG_AUTH2_FLAGS|NETLOGON_NEG_SCHANNEL;
struct cli_state *cli = NULL;
struct rpc_pipe_client *pipe_hnd = NULL;
struct rpc_pipe_client *netlogon_pipe = NULL;
NTSTATUS ntret = NT_STATUS_UNSUCCESSFUL;
sec = (enum security_types)lp_security();
if (sec == SEC_ADS) {
/* Connect to IPC$ using machine account's credentials. We don't use anonymous
connection here, as it may be denied by server's local policy. */
net_use_machine_account();
} else {
/* some servers (e.g. WinNT) don't accept machine-authenticated
smb connections */
conn_flags |= NET_FLAGS_ANONYMOUS;
}
/* Connect to remote machine */
ntret = net_make_ipc_connection_ex(domain, server, pss, conn_flags, &cli);
if (!NT_STATUS_IS_OK(ntret)) {
return ntret;
}
/* Setup the creds as though we're going to do schannel... */
netlogon_pipe = get_schannel_session_key(cli, domain, &neg_flags, &ntret);
/* We return NT_STATUS_INVALID_NETWORK_RESPONSE if the server is refusing
to negotiate schannel, but the creds were set up ok. That'll have to do. */
if (!netlogon_pipe) {
if (NT_STATUS_EQUAL(ntret, NT_STATUS_INVALID_NETWORK_RESPONSE)) {
cli_shutdown(cli);
return NT_STATUS_OK;
} else {
DEBUG(0,("net_rpc_join_ok: failed to get schannel session "
"key from server %s for domain %s. Error was %s\n",
cli->desthost, domain, nt_errstr(ntret) ));
cli_shutdown(cli);
return ntret;
}
}
/* Only do the rest of the schannel test if the client is allowed to do this. */
if (!lp_client_schannel()) {
cli_shutdown(cli);
/* We're good... */
return ntret;
}
pipe_hnd = cli_rpc_pipe_open_schannel_with_key(cli, PI_NETLOGON,
PIPE_AUTH_LEVEL_PRIVACY,
domain, netlogon_pipe->dc, &ntret);
if (!pipe_hnd) {
DEBUG(0,("net_rpc_join_ok: failed to open schannel session "
"on netlogon pipe to server %s for domain %s. Error was %s\n",
cli->desthost, domain, nt_errstr(ntret) ));
/*
* Note: here, we have:
* (pipe_hnd != NULL) if and only if NT_STATUS_IS_OK(ntret)
*/
}
cli_shutdown(cli);
return ntret;
}
/**
* Join a domain using the administrator username and password
*
* @param argc Standard main() style argc
* @param argc Standard main() style argv. Initial components are already
* stripped. Currently not used.
* @return A shell status integer (0 for success)
*
**/
int net_rpc_join_newstyle(int argc, const char **argv)
{
/* libsmb variables */
struct cli_state *cli;
TALLOC_CTX *mem_ctx;
uint32 acb_info = ACB_WSTRUST;
uint32 neg_flags = NETLOGON_NEG_AUTH2_FLAGS|(lp_client_schannel() ? NETLOGON_NEG_SCHANNEL : 0);
uint32 sec_channel_type;
struct rpc_pipe_client *pipe_hnd = NULL;
/* rpc variables */
POLICY_HND lsa_pol, sam_pol, domain_pol, user_pol;
DOM_SID *domain_sid;
uint32 user_rid;
/* Password stuff */
char *clear_trust_password = NULL;
uchar pwbuf[516];
SAM_USERINFO_CTR ctr;
SAM_USER_INFO_24 p24;
SAM_USER_INFO_16 p16;
uchar md4_trust_password[16];
/* Misc */
NTSTATUS result;
int retval = 1;
char *domain = NULL;
uint32 num_rids, *name_types, *user_rids;
uint32 flags = 0x3e8;
char *acct_name;
const char *const_acct_name;
/* check what type of join */
if (argc >= 0) {
sec_channel_type = get_sec_channel_type(argv[0]);
} else {
sec_channel_type = get_sec_channel_type(NULL);
}
switch (sec_channel_type) {
case SEC_CHAN_WKSTA:
acb_info = ACB_WSTRUST;
break;
case SEC_CHAN_BDC:
acb_info = ACB_SVRTRUST;
break;
#if 0
case SEC_CHAN_DOMAIN:
acb_info = ACB_DOMTRUST;
break;
#endif
}
/* Make authenticated connection to remote machine */
result = net_make_ipc_connection(NET_FLAGS_PDC, &cli);
if (!NT_STATUS_IS_OK(result)) {
return 1;
}
if (!(mem_ctx = talloc_init("net_rpc_join_newstyle"))) {
DEBUG(0, ("Could not initialise talloc context\n"));
goto done;
}
/* Fetch domain sid */
pipe_hnd = cli_rpc_pipe_open_noauth(cli, PI_LSARPC, &result);
if (!pipe_hnd) {
DEBUG(0, ("Error connecting to LSA pipe. Error was %s\n",
nt_errstr(result) ));
goto done;
}
CHECK_RPC_ERR(rpccli_lsa_open_policy(pipe_hnd, mem_ctx, True,
SEC_RIGHTS_MAXIMUM_ALLOWED,
&lsa_pol),
"error opening lsa policy handle");
CHECK_RPC_ERR(rpccli_lsa_query_info_policy(pipe_hnd, mem_ctx, &lsa_pol,
5, &domain, &domain_sid),
"error querying info policy");
rpccli_lsa_Close(pipe_hnd, mem_ctx, &lsa_pol);
cli_rpc_pipe_close(pipe_hnd); /* Done with this pipe */
/* Bail out if domain didn't get set. */
if (!domain) {
DEBUG(0, ("Could not get domain name.\n"));
goto done;
}
/* Create domain user */
pipe_hnd = cli_rpc_pipe_open_noauth(cli, PI_SAMR, &result);
if (!pipe_hnd) {
DEBUG(0, ("Error connecting to SAM pipe. Error was %s\n",
nt_errstr(result) ));
goto done;
}
CHECK_RPC_ERR(rpccli_samr_connect(pipe_hnd, mem_ctx,
SEC_RIGHTS_MAXIMUM_ALLOWED,
&sam_pol),
"could not connect to SAM database");
CHECK_RPC_ERR(rpccli_samr_open_domain(pipe_hnd, mem_ctx, &sam_pol,
SEC_RIGHTS_MAXIMUM_ALLOWED,
domain_sid, &domain_pol),
"could not open domain");
/* Create domain user */
if ((acct_name = talloc_asprintf(mem_ctx, "%s$", global_myname())) == NULL) {
result = NT_STATUS_NO_MEMORY;
goto done;
}
strlower_m(acct_name);
const_acct_name = acct_name;
result = rpccli_samr_create_dom_user(pipe_hnd, mem_ctx, &domain_pol,
acct_name, acb_info,
0xe005000b, &user_pol,
&user_rid);
if (!NT_STATUS_IS_OK(result) &&
!NT_STATUS_EQUAL(result, NT_STATUS_USER_EXISTS)) {
d_fprintf(stderr, "Creation of workstation account failed\n");
/* If NT_STATUS_ACCESS_DENIED then we have a valid
username/password combo but the user does not have
administrator access. */
if (NT_STATUS_V(result) == NT_STATUS_V(NT_STATUS_ACCESS_DENIED))
d_fprintf(stderr, "User specified does not have administrator privileges\n");
goto done;
}
/* We *must* do this.... don't ask... */
if (NT_STATUS_IS_OK(result)) {
rpccli_samr_close(pipe_hnd, mem_ctx, &user_pol);
}
CHECK_RPC_ERR_DEBUG(rpccli_samr_lookup_names(pipe_hnd, mem_ctx,
&domain_pol, flags,
1, &const_acct_name,
&num_rids,
&user_rids, &name_types),
("error looking up rid for user %s: %s\n",
acct_name, nt_errstr(result)));
if (name_types[0] != SID_NAME_USER) {
DEBUG(0, ("%s is not a user account (type=%d)\n", acct_name, name_types[0]));
goto done;
}
user_rid = user_rids[0];
/* Open handle on user */
CHECK_RPC_ERR_DEBUG(
rpccli_samr_open_user(pipe_hnd, mem_ctx, &domain_pol,
SEC_RIGHTS_MAXIMUM_ALLOWED,
user_rid, &user_pol),
("could not re-open existing user %s: %s\n",
acct_name, nt_errstr(result)));
/* Create a random machine account password */
{
char *str;
str = generate_random_str(DEFAULT_TRUST_ACCOUNT_PASSWORD_LENGTH);
clear_trust_password = SMB_STRDUP(str);
E_md4hash(clear_trust_password, md4_trust_password);
}
encode_pw_buffer(pwbuf, clear_trust_password, STR_UNICODE);
/* Set password on machine account */
ZERO_STRUCT(ctr);
ZERO_STRUCT(p24);
init_sam_user_info24(&p24, (char *)pwbuf,24);
ctr.switch_value = 24;
ctr.info.id24 = &p24;
CHECK_RPC_ERR(rpccli_samr_set_userinfo(pipe_hnd, mem_ctx, &user_pol, 24,
&cli->user_session_key, &ctr),
"error setting trust account password");
/* Why do we have to try to (re-)set the ACB to be the same as what
we passed in the samr_create_dom_user() call? When a NT
workstation is joined to a domain by an administrator the
acb_info is set to 0x80. For a normal user with "Add
workstations to the domain" rights the acb_info is 0x84. I'm
not sure whether it is supposed to make a difference or not. NT
seems to cope with either value so don't bomb out if the set
userinfo2 level 0x10 fails. -tpot */
ZERO_STRUCT(ctr);
ctr.switch_value = 16;
ctr.info.id16 = &p16;
init_sam_user_info16(&p16, acb_info);
/* Ignoring the return value is necessary for joining a domain
as a normal user with "Add workstation to domain" privilege. */
result = rpccli_samr_set_userinfo2(pipe_hnd, mem_ctx, &user_pol, 16,
&cli->user_session_key, &ctr);
rpccli_samr_close(pipe_hnd, mem_ctx, &user_pol);
cli_rpc_pipe_close(pipe_hnd); /* Done with this pipe */
/* Now check the whole process from top-to-bottom */
pipe_hnd = cli_rpc_pipe_open_noauth(cli, PI_NETLOGON, &result);
if (!pipe_hnd) {
DEBUG(0,("Error connecting to NETLOGON pipe. Error was %s\n",
nt_errstr(result) ));
goto done;
}
result = rpccli_netlogon_setup_creds(pipe_hnd,
cli->desthost, /* server name */
domain, /* domain */
global_myname(), /* client name */
global_myname(), /* machine account name */
md4_trust_password,
sec_channel_type,
&neg_flags);
if (!NT_STATUS_IS_OK(result)) {
DEBUG(0, ("Error in domain join verification (credential setup failed): %s\n\n",
nt_errstr(result)));
if ( NT_STATUS_EQUAL(result, NT_STATUS_ACCESS_DENIED) &&
(sec_channel_type == SEC_CHAN_BDC) ) {
d_fprintf(stderr, "Please make sure that no computer account\n"
"named like this machine (%s) exists in the domain\n",
global_myname());
}
goto done;
}
/* We can only check the schannel connection if the client is allowed
to do this and the server supports it. If not, just assume success
(after all the rpccli_netlogon_setup_creds() succeeded, and we'll
do the same again (setup creds) in net_rpc_join_ok(). JRA. */
if (lp_client_schannel() && (neg_flags & NETLOGON_NEG_SCHANNEL)) {
struct rpc_pipe_client *netlogon_schannel_pipe =
cli_rpc_pipe_open_schannel_with_key(cli,
PI_NETLOGON,
PIPE_AUTH_LEVEL_PRIVACY,
domain,
pipe_hnd->dc,
&result);
if (!NT_STATUS_IS_OK(result)) {
DEBUG(0, ("Error in domain join verification (schannel setup failed): %s\n\n",
nt_errstr(result)));
if ( NT_STATUS_EQUAL(result, NT_STATUS_ACCESS_DENIED) &&
(sec_channel_type == SEC_CHAN_BDC) ) {
d_fprintf(stderr, "Please make sure that no computer account\n"
"named like this machine (%s) exists in the domain\n",
global_myname());
}
goto done;
}
cli_rpc_pipe_close(netlogon_schannel_pipe);
}
cli_rpc_pipe_close(pipe_hnd);
/* Now store the secret in the secrets database */
strupper_m(domain);
if (!secrets_store_domain_sid(domain, domain_sid)) {
DEBUG(0, ("error storing domain sid for %s\n", domain));
goto done;
}
if (!secrets_store_machine_password(clear_trust_password, domain, sec_channel_type)) {
DEBUG(0, ("error storing plaintext domain secrets for %s\n", domain));
}
/* double-check, connection from scratch */
result = net_rpc_join_ok(domain, cli->desthost, &cli->dest_ss);
retval = NT_STATUS_IS_OK(result) ? 0 : -1;
done:
/* Display success or failure */
if (domain) {
if (retval != 0) {
fprintf(stderr,"Unable to join domain %s.\n",domain);
} else {
printf("Joined domain %s.\n",domain);
}
}
cli_shutdown(cli);
SAFE_FREE(clear_trust_password);
return retval;
}
/**
* check that a join is OK
*
* @return A shell status integer (0 for success)
*
**/
int net_rpc_testjoin(int argc, const char **argv)
{
char *domain = smb_xstrdup(opt_target_workgroup);
NTSTATUS nt_status;
/* Display success or failure */
nt_status = net_rpc_join_ok(domain, NULL, NULL);
if (!NT_STATUS_IS_OK(nt_status)) {
fprintf(stderr,"Join to domain '%s' is not valid: %s\n",
nt_errstr(nt_status), domain);
free(domain);
return -1;
}
printf("Join to '%s' is OK\n",domain);
free(domain);
return 0;
}