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r6573: Start on my project to implement an NT4 compatible BDC in Samba4.

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This brings in a compatability layer for Samba3 in Samba4 - where we
will start to define file formats and similar details.

The 'net samdump' command uses 'password server = ' for now, and
performs a similar task to Samba3's 'net rpc samsync'.

Andrew Bartlett
This commit is contained in:
Andrew Bartlett
2005-05-02 14:17:19 +00:00
committed by Gerald (Jerry) Carter
parent 23b529ee09
commit 550f17f992
14 changed files with 577 additions and 2 deletions
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225
source/libnet/libnet_vampire.c Normal file
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/*
Unix SMB/CIFS implementation.
Copyright (C) Andrew Bartlett <abartlet@samba.org> 2004-2005
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 2 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, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "includes.h"
#include "libnet/libnet.h"
#include "librpc/gen_ndr/ndr_netlogon.h"
#include "librpc/gen_ndr/ndr_samr.h"
static BOOL vampire_samdump_handle_user(TALLOC_CTX *mem_ctx,
struct creds_CredentialState *creds,
struct netr_DELTA_ENUM *delta)
{
uint32_t rid = delta->delta_id_union.rid;
struct netr_DELTA_USER *user = delta->delta_union.user;
struct samr_Password lm_hash;
struct samr_Password nt_hash;
struct samr_Password *lm_hash_p = NULL;
struct samr_Password *nt_hash_p = NULL;
const char *username = user->account_name.string;
char *hex_lm_password;
char *hex_nt_password;
NTSTATUS nt_status;
if (user->lm_password_present) {
sam_rid_crypt(rid, user->lmpassword.hash, lm_hash.hash, 0);
lm_hash_p = &lm_hash;
}
if (user->nt_password_present) {
sam_rid_crypt(rid, user->ntpassword.hash, nt_hash.hash, 0);
nt_hash_p = &nt_hash;
}
if (user->user_private_info.SensitiveData) {
DATA_BLOB data;
struct netr_USER_KEYS keys;
data.data = user->user_private_info.SensitiveData;
data.length = user->user_private_info.DataLength;
creds_arcfour_crypt(creds, data.data, data.length);
nt_status = ndr_pull_struct_blob(&data, mem_ctx, &keys, (ndr_pull_flags_fn_t)ndr_pull_netr_USER_KEYS);
if (NT_STATUS_IS_OK(nt_status)) {
if (keys.keys.keys2.lmpassword.length == 16) {
sam_rid_crypt(rid, keys.keys.keys2.lmpassword.pwd.hash, lm_hash.hash, 0);
lm_hash_p = &lm_hash;
}
if (keys.keys.keys2.ntpassword.length == 16) {
sam_rid_crypt(rid, keys.keys.keys2.ntpassword.pwd.hash, nt_hash.hash, 0);
nt_hash_p = &nt_hash;
}
} else {
printf("Failed to parse Sensitive Data for %s:\n", username);
dump_data(10, data.data, data.length);
return False;
}
}
hex_lm_password = smbpasswd_sethexpwd(mem_ctx, lm_hash_p, user->acct_flags);
hex_nt_password = smbpasswd_sethexpwd(mem_ctx, nt_hash_p, user->acct_flags);
printf("%s:%d:%s:%s:%s:LCT-%08X\n", username,
rid, hex_lm_password, hex_nt_password,
smbpasswd_encode_acb_info(mem_ctx, user->acct_flags),
(unsigned int)nt_time_to_unix(user->last_password_change));
return True;
}
static NTSTATUS libnet_SamDump_netlogon(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, union libnet_SamDump *r)
{
NTSTATUS nt_status;
TALLOC_CTX *loop_ctx, *delta_ctx;
struct creds_CredentialState *creds;
struct netr_DatabaseSync dbsync;
struct cli_credentials *machine_account;
struct dcerpc_binding *b;
struct dcerpc_pipe *p;
/* TODO: This is bogus */
const char **bindings = lp_passwordserver();
const char *binding;
if (bindings && bindings[0]) {
binding = bindings[0];
}
machine_account = cli_credentials_init(mem_ctx);
if (!machine_account) {
return NT_STATUS_NO_MEMORY;
}
cli_credentials_set_conf(machine_account);
nt_status = cli_credentials_set_machine_account(machine_account);
if (!NT_STATUS_IS_OK(nt_status)) {
r->netlogon.error_string = talloc_strdup(mem_ctx, "Could not obtain machine account password - are we joined to the domain?");
return nt_status;
}
if (cli_credentials_get_secure_channel_type(machine_account) != SEC_CHAN_BDC) {
r->netlogon.error_string
= talloc_asprintf(mem_ctx,
"Our join to domain %s is not as a BDC (%d), please rejoin as a BDC",
cli_credentials_get_secure_channel_type(machine_account),
cli_credentials_get_domain(machine_account));
return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
}
/* Connect to DC (take a binding string for now) */
nt_status = dcerpc_parse_binding(mem_ctx, binding, &b);
if (!NT_STATUS_IS_OK(nt_status)) {
r->netlogon.error_string = talloc_asprintf(mem_ctx, "Bad binding string %s\n", binding);
return NT_STATUS_INVALID_PARAMETER;
}
/* We like schannel */
b->flags &= ~DCERPC_AUTH_OPTIONS;
b->flags |= DCERPC_SCHANNEL | DCERPC_SEAL | DCERPC_SCHANNEL_128;
/* Setup schannel */
nt_status = dcerpc_pipe_connect_b(mem_ctx, &p, b,
DCERPC_NETLOGON_UUID,
DCERPC_NETLOGON_VERSION,
machine_account);
if (!NT_STATUS_IS_OK(nt_status)) {
return nt_status;
}
/* call domain logon */
nt_status = dcerpc_schannel_creds(p->conn->security_state.generic_state, mem_ctx, &creds);
if (!NT_STATUS_IS_OK(nt_status)) {
return nt_status;
}
dbsync.in.logon_server = talloc_asprintf(mem_ctx, "\\\\%s", dcerpc_server_name(p));
dbsync.in.computername = cli_credentials_get_workstation(machine_account);
dbsync.in.preferredmaximumlength = (uint32_t)-1;
ZERO_STRUCT(dbsync.in.return_authenticator);
dbsync.in.sync_context = 0;
dbsync.in.database_id = SAM_DATABASE_DOMAIN;
do {
int d;
loop_ctx = talloc_named(mem_ctx, 0, "DatabaseSync loop context");
creds_client_authenticator(creds, &dbsync.in.credential);
nt_status = dcerpc_netr_DatabaseSync(p, loop_ctx, &dbsync);
if (!NT_STATUS_IS_OK(nt_status) &&
!NT_STATUS_EQUAL(nt_status, STATUS_MORE_ENTRIES)) {
printf("DatabaseSync - %s\n", nt_errstr(nt_status));
return nt_status;
}
if (!creds_client_check(creds, &dbsync.out.return_authenticator.cred)) {
printf("Credential chaining failed\n");
}
dbsync.in.sync_context = dbsync.out.sync_context;
for (d=0; d < dbsync.out.delta_enum_array->num_deltas; d++) {
delta_ctx = talloc_named(loop_ctx, 0, "DatabaseSync delta context");
switch (dbsync.out.delta_enum_array->delta_enum[d].delta_type) {
case NETR_DELTA_USER:
if (!vampire_samdump_handle_user(delta_ctx,
creds,
&dbsync.out.delta_enum_array->delta_enum[d])) {
return NT_STATUS_INVALID_PARAMETER;
}
break;
}
talloc_free(delta_ctx);
}
talloc_free(loop_ctx);
} while (NT_STATUS_EQUAL(nt_status, STATUS_MORE_ENTRIES));
return NT_STATUS_OK;
}
NTSTATUS libnet_SamDump_generic(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, union libnet_SamDump *r)
{
NTSTATUS nt_status;
union libnet_SamDump r2;
r2.generic.level = LIBNET_SAMDUMP_NETLOGON;
r2.generic.error_string = NULL;
nt_status = libnet_SamDump(ctx, mem_ctx, &r2);
r->generic.error_string = r2.netlogon.error_string;
return nt_status;
}
NTSTATUS libnet_SamDump(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, union libnet_SamDump *r)
{
switch (r->generic.level) {
case LIBNET_SAMDUMP_GENERIC:
return libnet_SamDump_generic(ctx, mem_ctx, r);
case LIBNET_SAMDUMP_NETLOGON:
return libnet_SamDump_netlogon(ctx, mem_ctx, r);
}
return NT_STATUS_INVALID_LEVEL;
}