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-rw-r--r--source4/kdc/hdb-ldb.c148
1 files changed, 121 insertions, 27 deletions
diff --git a/source4/kdc/hdb-ldb.c b/source4/kdc/hdb-ldb.c
index 8f8ce3074b..cfde301cd3 100644
--- a/source4/kdc/hdb-ldb.c
+++ b/source4/kdc/hdb-ldb.c
@@ -52,7 +52,7 @@
enum hdb_ldb_ent_type
{ HDB_LDB_ENT_TYPE_CLIENT, HDB_LDB_ENT_TYPE_SERVER,
- HDB_LDB_ENT_TYPE_KRBTGT, HDB_LDB_ENT_TYPE_ANY };
+ HDB_LDB_ENT_TYPE_KRBTGT, HDB_LDB_ENT_TYPE_TRUST, HDB_LDB_ENT_TYPE_ANY };
static const char *realm_ref_attrs[] = {
"nCName",
@@ -60,6 +60,14 @@ static const char *realm_ref_attrs[] = {
NULL
};
+static const char *trust_attrs[] = {
+ "trustPartner",
+ "trustAuthIncoming",
+ "trustAuthOutgoing",
+ "whenCreated",
+ NULL
+};
+
static KerberosTime ldb_msg_find_krb5time_ldap_time(struct ldb_message *msg, const char *attr, KerberosTime default_val)
{
const char *tmp;
@@ -745,6 +753,41 @@ static krb5_error_code LDB_lookup_principal(krb5_context context, struct ldb_con
return 0;
}
+static krb5_error_code LDB_lookup_trust(krb5_context context, struct ldb_context *ldb_ctx,
+ TALLOC_CTX *mem_ctx,
+ const char *realm,
+ enum hdb_ldb_ent_type ent_type,
+ struct ldb_dn *realm_dn,
+ struct ldb_message ***pmsg)
+{
+ int lret;
+ char *filter = NULL;
+ const char * const *attrs = trust_attrs;
+
+ struct ldb_result *res = NULL;
+ filter = talloc_asprintf(mem_ctx, "(&(objectClass=trustedDomain)(|(flatname=%s)(trustPartner=%s)))", realm, realm);
+
+ if (!filter) {
+ krb5_set_error_string(context, "talloc_asprintf: out of memory");
+ return ENOMEM;
+ }
+
+ lret = ldb_search(ldb_ctx, ldb_get_default_basedn(ldb_ctx), LDB_SCOPE_SUBTREE, filter, attrs, &res);
+
+ if (lret != LDB_SUCCESS) {
+ DEBUG(3, ("Failed to search for %s: %s\n", filter, ldb_errstring(ldb_ctx)));
+ return HDB_ERR_NOENTRY;
+ } else if (res->count == 0 || res->count > 1) {
+ DEBUG(3, ("Failed find a single entry for %s: got %d\n", filter, res->count));
+ talloc_free(res);
+ return HDB_ERR_NOENTRY;
+ }
+ talloc_steal(mem_ctx, res->msgs);
+ *pmsg = res->msgs;
+ talloc_free(res);
+ return 0;
+}
+
static krb5_error_code LDB_lookup_realm(krb5_context context, struct ldb_context *ldb_ctx,
TALLOC_CTX *mem_ctx,
const char *realm,
@@ -853,8 +896,10 @@ static krb5_error_code LDB_fetch_krbtgt(krb5_context context, HDB *db,
{
krb5_error_code ret;
struct ldb_message **msg = NULL;
- struct ldb_message **realm_ref_msg = NULL;
+ struct ldb_message **realm_ref_msg_1 = NULL;
+ struct ldb_message **realm_ref_msg_2 = NULL;
struct ldb_dn *realm_dn;
+ const char *realm;
krb5_principal alloc_principal = NULL;
if (principal->name.name_string.len != 2
@@ -864,14 +909,18 @@ static krb5_error_code LDB_fetch_krbtgt(krb5_context context, HDB *db,
}
/* krbtgt case. Either us or a trusted realm */
+
if ((LDB_lookup_realm(context, (struct ldb_context *)db->hdb_db,
- mem_ctx, principal->name.name_string.val[1], &realm_ref_msg) == 0)) {
+ mem_ctx, principal->realm, &realm_ref_msg_1) == 0)
+ && (LDB_lookup_realm(context, (struct ldb_context *)db->hdb_db,
+ mem_ctx, principal->name.name_string.val[1], &realm_ref_msg_2) == 0)
+ && (ldb_dn_compare(realm_ref_msg_1[0]->dn, realm_ref_msg_1[0]->dn) == 0)) {
/* us */
/* Cludge, cludge cludge. If the realm part of krbtgt/realm,
* is in our db, then direct the caller at our primary
- * krgtgt */
+ * krbtgt */
- const char *dnsdomain = ldb_msg_find_attr_as_string(realm_ref_msg[0], "dnsRoot", NULL);
+ const char *dnsdomain = ldb_msg_find_attr_as_string(realm_ref_msg_1[0], "dnsRoot", NULL);
char *realm_fixed = strupper_talloc(mem_ctx, dnsdomain);
if (!realm_fixed) {
krb5_set_error_string(context, "strupper_talloc: out of memory");
@@ -891,31 +940,73 @@ static krb5_error_code LDB_fetch_krbtgt(krb5_context context, HDB *db,
return ENOMEM;
}
principal = alloc_principal;
- realm_dn = samdb_result_dn((struct ldb_context *)db->hdb_db, mem_ctx, realm_ref_msg[0], "nCName", NULL);
+ realm_dn = samdb_result_dn((struct ldb_context *)db->hdb_db, mem_ctx, realm_ref_msg_1[0], "nCName", NULL);
+
+ ret = LDB_lookup_principal(context, (struct ldb_context *)db->hdb_db,
+ mem_ctx,
+ principal, HDB_LDB_ENT_TYPE_KRBTGT, realm_dn, &msg);
+
+ if (ret != 0) {
+ krb5_warnx(context, "LDB_fetch: could not find principal in DB");
+ krb5_set_error_string(context, "LDB_fetch: could not find principal in DB");
+ return ret;
+ }
+
+ ret = LDB_message2entry(context, db, mem_ctx,
+ principal, HDB_LDB_ENT_TYPE_KRBTGT,
+ msg[0], realm_ref_msg_1[0], entry_ex);
+ if (ret != 0) {
+ krb5_warnx(context, "LDB_fetch: message2entry failed");
+ }
+ return ret;
+
} else {
- /* we should lookup trusted domains */
- return HDB_ERR_NOENTRY;
- }
+ enum {
+ INBOUND,
+ OUTBOUND,
+ UNKNOWN
+ } direction = UNKNOWN;
+
+ struct loadparm_context *lp_ctx = talloc_get_type(ldb_get_opaque(db->hdb_db, "loadparm"), struct loadparm_context);
+ /* Either an inbound or outbound trust */
+
+ if (strcasecmp(lp_realm(lp_ctx), principal->realm) == 0) {
+ /* look for inbound trust */
+ direction = INBOUND;
+ realm = principal->name.name_string.val[1];
+ }
- realm_dn = samdb_result_dn((struct ldb_context *)db->hdb_db, mem_ctx, realm_ref_msg[0], "nCName", NULL);
-
- ret = LDB_lookup_principal(context, (struct ldb_context *)db->hdb_db,
- mem_ctx,
- principal, HDB_LDB_ENT_TYPE_KRBTGT, realm_dn, &msg);
-
- if (ret != 0) {
- krb5_warnx(context, "LDB_fetch: could not find principal in DB");
- krb5_set_error_string(context, "LDB_fetch: could not find principal in DB");
+ if (strcasecmp(lp_realm(lp_ctx), principal->name.name_string.val[1]) == 0) {
+ /* look for outbound trust */
+ direction = OUTBOUND;
+ realm = principal->realm;
+ }
+
+ /* Trusted domains are under CN=system */
+
+ ret = LDB_lookup_trust(context, (struct ldb_context *)db->hdb_db,
+ mem_ctx,
+ realm, HDB_LDB_ENT_TYPE_TRUST, realm_dn, &msg);
+
+ if (ret != 0) {
+ krb5_warnx(context, "LDB_fetch: could not find principal in DB");
+ krb5_set_error_string(context, "LDB_fetch: could not find principal in DB");
+ return ret;
+ }
+
+ ret = LDB_message2entry(context, db, mem_ctx,
+ principal, HDB_LDB_ENT_TYPE_KRBTGT,
+ msg[0], realm_ref_msg_1[0], entry_ex);
+ if (ret != 0) {
+ krb5_warnx(context, "LDB_fetch: message2entry failed");
+ }
return ret;
- }
- ret = LDB_message2entry(context, db, mem_ctx,
- principal, HDB_LDB_ENT_TYPE_KRBTGT,
- msg[0], realm_ref_msg[0], entry_ex);
- if (ret != 0) {
- krb5_warnx(context, "LDB_fetch: message2entry failed");
+
+ /* we should lookup trusted domains */
+ return HDB_ERR_NOENTRY;
}
- return ret;
+
}
static krb5_error_code LDB_fetch_server(krb5_context context, HDB *db,
@@ -1022,10 +1113,13 @@ static krb5_error_code LDB_fetch(krb5_context context, HDB *db,
if (ret != HDB_ERR_NOENTRY) goto done;
}
if (flags & HDB_F_GET_SERVER) {
- ret = LDB_fetch_server(context, db, mem_ctx, principal, flags, entry_ex);
- if (ret != HDB_ERR_NOENTRY) goto done;
+ /* krbtgt fits into this situation for trusted realms, and for resolving different versions of our own realm name */
ret = LDB_fetch_krbtgt(context, db, mem_ctx, principal, flags, entry_ex);
if (ret != HDB_ERR_NOENTRY) goto done;
+
+ /* We return 'no entry' if it does not start with krbtgt/, so move to the common case quickly */
+ ret = LDB_fetch_server(context, db, mem_ctx, principal, flags, entry_ex);
+ if (ret != HDB_ERR_NOENTRY) goto done;
}
if (flags & HDB_F_GET_KRBTGT) {
ret = LDB_fetch_krbtgt(context, db, mem_ctx, principal, flags, entry_ex);
generated by cgit (git 2.34.1) at 2024-07-31 12:54:42 +0000