NTSTATUS crack_auto_name_to_nt4_name(TALLOC_CTX *mem_ctx,
struct tevent_context *ev_ctx,
struct loadparm_context *lp_ctx,
const char *name,
const char **nt4_domain,
const char **nt4_account)
{
enum drsuapi_DsNameFormat format_offered = DRSUAPI_DS_NAME_FORMAT_UNKNOWN;
/* Handle anonymous bind */
if (!name || !*name) {
*nt4_domain = "";
*nt4_account = "";
return NT_STATUS_OK;
}
if (strchr_m(name, '=')) {
format_offered = DRSUAPI_DS_NAME_FORMAT_FQDN_1779;
} else if (strchr_m(name, '@')) {
format_offered = DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL;
} else if (strchr_m(name, '\\')) {
format_offered = DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT;
} else if (strchr_m(name, '/')) {
format_offered = DRSUAPI_DS_NAME_FORMAT_CANONICAL;
} else {
return NT_STATUS_NO_SUCH_USER;
}
return crack_name_to_nt4_name(mem_ctx, ev_ctx, lp_ctx, format_offered, name, nt4_domain, nt4_account);
}
/*
lookup a SID for 1 name
*/
static NTSTATUS dcesrv_lsa_lookup_name(struct tevent_context *ev_ctx,
struct loadparm_context *lp_ctx,
struct lsa_policy_state *state, TALLOC_CTX *mem_ctx,
const char *name, const char **authority_name,
struct dom_sid **sid, enum lsa_SidType *rtype,
uint32_t *rid)
{
int ret, i;
uint32_t atype;
struct ldb_message **res;
const char * const attrs[] = { "objectSid", "sAMAccountType", NULL};
const char *p;
const char *domain;
const char *username;
struct ldb_dn *domain_dn;
struct dom_sid *domain_sid;
NTSTATUS status;
p = strchr_m(name, '\\');
if (p != NULL) {
domain = talloc_strndup(mem_ctx, name, p-name);
if (!domain) {
return NT_STATUS_NO_MEMORY;
}
username = p + 1;
} else if (strchr_m(name, '@')) {
status = crack_name_to_nt4_name(mem_ctx, ev_ctx, lp_ctx, DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL, name, &domain, &username);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(3, ("Failed to crack name %s into an NT4 name: %s\n", name, nt_errstr(status)));
return status;
}
} else {
domain = NULL;
username = name;
}
if (!domain) {
/* Look up table of well known names */
status = lookup_well_known_names(mem_ctx, NULL, username, authority_name, sid, rtype);
if (NT_STATUS_IS_OK(status)) {
dom_sid_split_rid(NULL, *sid, NULL, rid);
return NT_STATUS_OK;
}
if (username == NULL) {
*authority_name = NAME_BUILTIN;
*sid = dom_sid_parse_talloc(mem_ctx, SID_BUILTIN);
*rtype = SID_NAME_DOMAIN;
*rid = 0xFFFFFFFF;
return NT_STATUS_OK;
}
if (strcasecmp_m(username, NAME_NT_AUTHORITY) == 0) {
*authority_name = NAME_NT_AUTHORITY;
*sid = dom_sid_parse_talloc(mem_ctx, SID_NT_AUTHORITY);
*rtype = SID_NAME_DOMAIN;
dom_sid_split_rid(NULL, *sid, NULL, rid);
return NT_STATUS_OK;
}
if (strcasecmp_m(username, NAME_BUILTIN) == 0) {
*authority_name = NAME_BUILTIN;
*sid = dom_sid_parse_talloc(mem_ctx, SID_BUILTIN);
*rtype = SID_NAME_DOMAIN;
*rid = 0xFFFFFFFF;
return NT_STATUS_OK;
}
if (strcasecmp_m(username, state->domain_dns) == 0) {
*authority_name = state->domain_name;
*sid = state->domain_sid;
*rtype = SID_NAME_DOMAIN;
*rid = 0xFFFFFFFF;
return NT_STATUS_OK;
}
if (strcasecmp_m(username, state->domain_name) == 0) {
*authority_name = state->domain_name;
*sid = state->domain_sid;
*rtype = SID_NAME_DOMAIN;
*rid = 0xFFFFFFFF;
return NT_STATUS_OK;
}
/* Perhaps this is a well known user? */
name = talloc_asprintf(mem_ctx, "%s\\%s", NAME_NT_AUTHORITY, username);
if (!name) {
return NT_STATUS_NO_MEMORY;
}
status = dcesrv_lsa_lookup_name(ev_ctx, lp_ctx, state, mem_ctx, name, authority_name, sid, rtype, rid);
if (NT_STATUS_IS_OK(status)) {
return status;
}
/* Perhaps this is a BUILTIN user? */
name = talloc_asprintf(mem_ctx, "%s\\%s", NAME_BUILTIN, username);
if (!name) {
return NT_STATUS_NO_MEMORY;
}
status = dcesrv_lsa_lookup_name(ev_ctx, lp_ctx, state, mem_ctx, name, authority_name, sid, rtype, rid);
if (NT_STATUS_IS_OK(status)) {
return status;
}
/* OK, I give up - perhaps we need to assume the user is in our domain? */
name = talloc_asprintf(mem_ctx, "%s\\%s", state->domain_name, username);
if (!name) {
return NT_STATUS_NO_MEMORY;
}
status = dcesrv_lsa_lookup_name(ev_ctx, lp_ctx, state, mem_ctx, name, authority_name, sid, rtype, rid);
if (NT_STATUS_IS_OK(status)) {
return status;
}
return STATUS_SOME_UNMAPPED;
} else if (strcasecmp_m(domain, NAME_NT_AUTHORITY) == 0) {
if (!*username) {
*authority_name = NAME_NT_AUTHORITY;
*sid = dom_sid_parse_talloc(mem_ctx, SID_NT_AUTHORITY);
*rtype = SID_NAME_DOMAIN;
dom_sid_split_rid(NULL, *sid, NULL, rid);
return NT_STATUS_OK;
}
/* Look up table of well known names */
status = lookup_well_known_names(mem_ctx, domain, username, authority_name,
sid, rtype);
if (NT_STATUS_IS_OK(status)) {
dom_sid_split_rid(NULL, *sid, NULL, rid);
}
return status;
} else if (strcasecmp_m(domain, NAME_BUILTIN) == 0) {
*authority_name = NAME_BUILTIN;
domain_dn = state->builtin_dn;
} else if (strcasecmp_m(domain, state->domain_dns) == 0) {
*authority_name = state->domain_name;
domain_dn = state->domain_dn;
} else if (strcasecmp_m(domain, state->domain_name) == 0) {
*authority_name = state->domain_name;
domain_dn = state->domain_dn;
} else {
/* Not local, need to ask winbind in future */
return STATUS_SOME_UNMAPPED;
}
ret = gendb_search_dn(state->sam_ldb, mem_ctx, domain_dn, &res, attrs);
if (ret == 1) {
domain_sid = samdb_result_dom_sid(mem_ctx, res[0], "objectSid");
if (domain_sid == NULL) {
return NT_STATUS_INVALID_SID;
}
} else {
return NT_STATUS_INVALID_SID;
}
if (!*username) {
*sid = domain_sid;
*rtype = SID_NAME_DOMAIN;
*rid = 0xFFFFFFFF;
return NT_STATUS_OK;
}
ret = gendb_search(state->sam_ldb, mem_ctx, domain_dn, &res, attrs,
"(&(sAMAccountName=%s)(objectSid=*))",
ldb_binary_encode_string(mem_ctx, username));
if (ret == -1) {
return NT_STATUS_INVALID_SID;
}
for (i=0; i < ret; i++) {
*sid = samdb_result_dom_sid(mem_ctx, res[i], "objectSid");
if (*sid == NULL) {
return NT_STATUS_INVALID_SID;
}
/* Check that this is in the domain */
if (!dom_sid_in_domain(domain_sid, *sid)) {
continue;
}
atype = samdb_result_uint(res[i], "sAMAccountType", 0);
*rtype = ds_atype_map(atype);
if (*rtype == SID_NAME_UNKNOWN) {
return STATUS_SOME_UNMAPPED;
}
dom_sid_split_rid(NULL, *sid, NULL, rid);
return NT_STATUS_OK;
}
/* need to check for an allocated sid */
return NT_STATUS_INVALID_SID;
}
static NTSTATUS authsam_check_password_internals(struct auth_method_context *ctx,
TALLOC_CTX *mem_ctx,
const struct auth_usersupplied_info *user_info,
struct auth_user_info_dc **user_info_dc,
bool *authoritative)
{
NTSTATUS nt_status;
const char *account_name = user_info->mapped.account_name;
struct ldb_message *msg;
struct ldb_dn *domain_dn;
DATA_BLOB user_sess_key, lm_sess_key;
TALLOC_CTX *tmp_ctx;
const char *p = NULL;
if (ctx->auth_ctx->sam_ctx == NULL) {
DEBUG(0, ("No SAM available, cannot log in users\n"));
return NT_STATUS_INVALID_SYSTEM_SERVICE;
}
if (!account_name || !*account_name) {
/* 'not for me' */
return NT_STATUS_NOT_IMPLEMENTED;
}
tmp_ctx = talloc_new(mem_ctx);
if (!tmp_ctx) {
return NT_STATUS_NO_MEMORY;
}
domain_dn = ldb_get_default_basedn(ctx->auth_ctx->sam_ctx);
if (domain_dn == NULL) {
talloc_free(tmp_ctx);
return NT_STATUS_NO_SUCH_DOMAIN;
}
p = strchr_m(account_name, '@');
if (p != NULL) {
const char *nt4_domain = NULL;
const char *nt4_account = NULL;
bool is_my_domain = false;
nt_status = crack_name_to_nt4_name(mem_ctx,
ctx->auth_ctx->sam_ctx,
/*
* DRSUAPI_DS_NAME_FORMAT_UPN_FOR_LOGON ?
*/
DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL,
account_name,
&nt4_domain, &nt4_account);
if (!NT_STATUS_IS_OK(nt_status)) {
talloc_free(tmp_ctx);
return NT_STATUS_NO_SUCH_USER;
}
is_my_domain = lpcfg_is_mydomain(ctx->auth_ctx->lp_ctx, nt4_domain);
if (!is_my_domain) {
/*
* This is a user within our forest,
* but in a different domain,
* we're not authoritative
*/
talloc_free(tmp_ctx);
return NT_STATUS_NOT_IMPLEMENTED;
}
/*
* Let's use the NT4 account name for the lookup.
*/
account_name = nt4_account;
}
nt_status = authsam_search_account(tmp_ctx, ctx->auth_ctx->sam_ctx, account_name, domain_dn, &msg);
if (!NT_STATUS_IS_OK(nt_status)) {
talloc_free(tmp_ctx);
return nt_status;
}
nt_status = authsam_authenticate(ctx->auth_ctx, tmp_ctx, ctx->auth_ctx->sam_ctx, domain_dn, msg, user_info,
&user_sess_key, &lm_sess_key, authoritative);
if (!NT_STATUS_IS_OK(nt_status)) {
talloc_free(tmp_ctx);
return nt_status;
}
nt_status = authsam_make_user_info_dc(tmp_ctx, ctx->auth_ctx->sam_ctx,
lpcfg_netbios_name(ctx->auth_ctx->lp_ctx),
lpcfg_sam_name(ctx->auth_ctx->lp_ctx),
lpcfg_sam_dnsname(ctx->auth_ctx->lp_ctx),
domain_dn,
msg,
user_sess_key, lm_sess_key,
user_info_dc);
if (!NT_STATUS_IS_OK(nt_status)) {
talloc_free(tmp_ctx);
return nt_status;
}
talloc_steal(mem_ctx, *user_info_dc);
talloc_free(tmp_ctx);
return NT_STATUS_OK;
}
