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authorStefan Metzmacher <metze@samba.org>2011-04-07 11:16:55 +0200
committerStefan Metzmacher <metze@samba.org>2011-05-18 07:46:44 +0200
commita7b8593f9c8f43f7861d2a0bc0e249f17d8ce7f5 (patch)
treeeb7d3f18887254246148f8a3064d0f6ba8cb2b73
parent5f48c5df513eecaff162e72bfeff39b9390710e7 (diff)
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s4:kdc: split s4u2self and s4u2proxy checks
metze
-rw-r--r--source4/kdc/db-glue.c29
-rw-r--r--source4/kdc/db-glue.h14
-rw-r--r--source4/kdc/hdb-samba4.c27
-rw-r--r--source4/kdc/mit_samba.c8
4 files changed, 55 insertions, 23 deletions
diff --git a/source4/kdc/db-glue.c b/source4/kdc/db-glue.c
index 1d37be4020..72262ac18b 100644
--- a/source4/kdc/db-glue.c
+++ b/source4/kdc/db-glue.c
@@ -1535,14 +1535,12 @@ krb5_error_code samba_kdc_nextkey(krb5_context context,
/* Check if a given entry may delegate or do s4u2self to this target principal
*
* This is currently a very nasty hack - allowing only delegation to itself.
- *
- * This is shared between the constrained delegation and S4U2Self code.
*/
krb5_error_code
-samba_kdc_check_identical_client_and_server(krb5_context context,
- struct samba_kdc_db_context *kdc_db_ctx,
- hdb_entry_ex *entry,
- krb5_const_principal target_principal)
+samba_kdc_check_s4u2self(krb5_context context,
+ struct samba_kdc_db_context *kdc_db_ctx,
+ hdb_entry_ex *entry,
+ krb5_const_principal target_principal)
{
krb5_error_code ret;
krb5_principal enterprise_prinicpal = NULL;
@@ -1555,11 +1553,11 @@ samba_kdc_check_identical_client_and_server(krb5_context context,
"objectSid", NULL
};
- TALLOC_CTX *mem_ctx = talloc_named(kdc_db_ctx, 0, "samba_kdc_check_constrained_delegation");
+ TALLOC_CTX *mem_ctx = talloc_named(kdc_db_ctx, 0, "samba_kdc_check_s4u2self");
if (!mem_ctx) {
ret = ENOMEM;
- krb5_set_error_message(context, ret, "samba_kdc_fetch: talloc_named() failed!");
+ krb5_set_error_message(context, ret, "samba_kdc_check_s4u2self: talloc_named() failed!");
return ret;
}
@@ -1567,7 +1565,7 @@ samba_kdc_check_identical_client_and_server(krb5_context context,
/* Need to reparse the enterprise principal to find the real target */
if (target_principal->name.name_string.len != 1) {
ret = KRB5_PARSE_MALFORMED;
- krb5_set_error_message(context, ret, "samba_kdc_check_constrained_delegation: request for delegation to enterprise principal with wrong (%d) number of components",
+ krb5_set_error_message(context, ret, "samba_kdc_check_s4u2self: request for delegation to enterprise principal with wrong (%d) number of components",
target_principal->name.name_string.len);
talloc_free(mem_ctx);
return ret;
@@ -1659,6 +1657,19 @@ samba_kdc_check_pkinit_ms_upn_match(krb5_context context,
return ret;
}
+/*
+ * Check if a given entry may delegate to this target principal
+ * with S4U2Proxy.
+ */
+krb5_error_code
+samba_kdc_check_s4u2proxy(krb5_context context,
+ struct samba_kdc_db_context *kdc_db_ctx,
+ hdb_entry_ex *entry,
+ krb5_const_principal target_principal)
+{
+ return KRB5KDC_ERR_BADOPTION;
+}
+
NTSTATUS samba_kdc_setup_db_ctx(TALLOC_CTX *mem_ctx, struct samba_kdc_base_context *base_ctx,
struct samba_kdc_db_context **kdc_db_ctx_out)
{
diff --git a/source4/kdc/db-glue.h b/source4/kdc/db-glue.h
index 4f1e06fa7a..18d2c07de6 100644
--- a/source4/kdc/db-glue.h
+++ b/source4/kdc/db-glue.h
@@ -37,10 +37,10 @@ krb5_error_code samba_kdc_nextkey(krb5_context context,
hdb_entry_ex *entry);
krb5_error_code
-samba_kdc_check_identical_client_and_server(krb5_context context,
- struct samba_kdc_db_context *kdc_db_ctx,
- hdb_entry_ex *entry,
- krb5_const_principal target_principal);
+samba_kdc_check_s4u2self(krb5_context context,
+ struct samba_kdc_db_context *kdc_db_ctx,
+ hdb_entry_ex *entry,
+ krb5_const_principal target_principal);
krb5_error_code
samba_kdc_check_pkinit_ms_upn_match(krb5_context context,
@@ -48,5 +48,11 @@ samba_kdc_check_pkinit_ms_upn_match(krb5_context context,
hdb_entry_ex *entry,
krb5_const_principal certificate_principal);
+krb5_error_code
+samba_kdc_check_s4u2proxy(krb5_context context,
+ struct samba_kdc_db_context *kdc_db_ctx,
+ hdb_entry_ex *entry,
+ krb5_const_principal target_principal);
+
NTSTATUS samba_kdc_setup_db_ctx(TALLOC_CTX *mem_ctx, struct samba_kdc_base_context *base_ctx,
struct samba_kdc_db_context **kdc_db_ctx_out);
diff --git a/source4/kdc/hdb-samba4.c b/source4/kdc/hdb-samba4.c
index 8511b2f27b..f82712e2b2 100644
--- a/source4/kdc/hdb-samba4.c
+++ b/source4/kdc/hdb-samba4.c
@@ -121,7 +121,7 @@ static krb5_error_code hdb_samba4_destroy(krb5_context context, HDB *db)
}
static krb5_error_code
-hdb_samba4_check_identical_client_and_server(krb5_context context, HDB *db,
+hdb_samba4_check_constrained_delegation(krb5_context context, HDB *db,
hdb_entry_ex *entry,
krb5_const_principal target_principal)
{
@@ -130,9 +130,9 @@ hdb_samba4_check_identical_client_and_server(krb5_context context, HDB *db,
kdc_db_ctx = talloc_get_type_abort(db->hdb_db,
struct samba_kdc_db_context);
- return samba_kdc_check_identical_client_and_server(context, kdc_db_ctx,
- entry,
- target_principal);
+ return samba_kdc_check_s4u2proxy(context, kdc_db_ctx,
+ entry,
+ target_principal);
}
static krb5_error_code
@@ -150,6 +150,21 @@ hdb_samba4_check_pkinit_ms_upn_match(krb5_context context, HDB *db,
certificate_principal);
}
+static krb5_error_code
+hdb_samba4_check_s4u2self(krb5_context context, HDB *db,
+ hdb_entry_ex *entry,
+ krb5_const_principal target_principal)
+{
+ struct samba_kdc_db_context *kdc_db_ctx;
+
+ kdc_db_ctx = talloc_get_type_abort(db->hdb_db,
+ struct samba_kdc_db_context);
+
+ return samba_kdc_check_s4u2self(context, kdc_db_ctx,
+ entry,
+ target_principal);
+}
+
/* This interface is to be called by the KDC and libnet_keytab_dump,
* which is expecting Samba calling conventions.
* It is also called by a wrapper (hdb_samba4_create) from the
@@ -197,9 +212,9 @@ NTSTATUS hdb_samba4_create_kdc(struct samba_kdc_base_context *base_ctx,
(*db)->hdb_destroy = hdb_samba4_destroy;
(*db)->hdb_auth_status = NULL;
- (*db)->hdb_check_constrained_delegation = hdb_samba4_check_identical_client_and_server;
+ (*db)->hdb_check_constrained_delegation = hdb_samba4_check_constrained_delegation;
(*db)->hdb_check_pkinit_ms_upn_match = hdb_samba4_check_pkinit_ms_upn_match;
- (*db)->hdb_check_s4u2self = hdb_samba4_check_identical_client_and_server;
+ (*db)->hdb_check_s4u2self = hdb_samba4_check_s4u2self;
return NT_STATUS_OK;
}
diff --git a/source4/kdc/mit_samba.c b/source4/kdc/mit_samba.c
index dcabe39db6..50b5d1d292 100644
--- a/source4/kdc/mit_samba.c
+++ b/source4/kdc/mit_samba.c
@@ -330,10 +330,10 @@ static int mit_samba_check_s4u2proxy(struct mit_samba_context *ctx,
return ret;
}
- ret = samba_kdc_check_identical_client_and_server(ctx->context,
- ctx->db_ctx,
- entry,
- target_principal);
+ ret = samba_kdc_check_s4u2proxy(ctx->context,
+ ctx->db_ctx,
+ entry,
+ target_principal);
krb5_free_principal(ctx->context, target_principal);