[SCM] Samba Shared Repository - branch master updated - tevent-0-9-8-141-g3e7a3bc
Andrew Tridgell
tridge at samba.org
Thu Sep 10 01:49:18 MDT 2009
The branch, master has been updated
via 3e7a3bc9bd33fd7ad490278b910f934415f58a95 (commit)
via 9460427c24078aecdce602dd4cbd59a6c49a781c (commit)
via 25b68701c1c7541ef6233fae35145844911380ee (commit)
via 2ff4764f8fb86842120a2b5de20df641e8821af7 (commit)
from 5283ad11bdd87daf2e9ed6d4644bfb1d8c978b04 (commit)
http://gitweb.samba.org/?p=samba.git;a=shortlog;h=master
- Log -----------------------------------------------------------------
commit 3e7a3bc9bd33fd7ad490278b910f934415f58a95
Author: Andrew Tridgell <tridge at samba.org>
Date: Thu Sep 10 17:46:30 2009 +1000
s4/drs: enable attribute encryption
This means we now get passwords vampired correctly for s4<->s4
replication.
commit 9460427c24078aecdce602dd4cbd59a6c49a781c
Author: Andrew Tridgell <tridge at samba.org>
Date: Thu Sep 10 17:45:25 2009 +1000
s4: kludge_acl needs to be above repl_meta_data
We have to bypass kludge_acl in replication as otherwise we aren't
allowed access to the password entries
commit 25b68701c1c7541ef6233fae35145844911380ee
Author: Andrew Tridgell <tridge at samba.org>
Date: Thu Sep 10 17:42:36 2009 +1000
s4/repl: give a useful error message if we can't decode an object
commit 2ff4764f8fb86842120a2b5de20df641e8821af7
Author: Andrew Tridgell <tridge at samba.org>
Date: Thu Sep 10 17:42:13 2009 +1000
libcli: added a drsuapi attribute encryption function
-----------------------------------------------------------------------
Summary of changes:
libcli/drsuapi/drsuapi.h | 5 ++
libcli/drsuapi/repl_decrypt.c | 84 +++++++++++++++++++++++----
source4/dsdb/repl/replicated_objects.c | 5 +-
source4/rpc_server/drsuapi/getncchanges.c | 47 +++++++++++++--
source4/scripting/python/samba/provision.py | 4 +-
5 files changed, 125 insertions(+), 20 deletions(-)
Changeset truncated at 500 lines:
diff --git a/libcli/drsuapi/drsuapi.h b/libcli/drsuapi/drsuapi.h
index b953507..a4fb15f 100644
--- a/libcli/drsuapi/drsuapi.h
+++ b/libcli/drsuapi/drsuapi.h
@@ -31,3 +31,8 @@ WERROR drsuapi_decrypt_attribute(TALLOC_CTX *mem_ctx,
uint32_t rid,
struct drsuapi_DsReplicaAttribute *attr);
+
+WERROR drsuapi_encrypt_attribute(TALLOC_CTX *mem_ctx,
+ const DATA_BLOB *gensec_skey,
+ uint32_t rid,
+ struct drsuapi_DsReplicaAttribute *attr);
diff --git a/libcli/drsuapi/repl_decrypt.c b/libcli/drsuapi/repl_decrypt.c
index 33dfbe5..924e799 100644
--- a/libcli/drsuapi/repl_decrypt.c
+++ b/libcli/drsuapi/repl_decrypt.c
@@ -94,14 +94,14 @@ WERROR drsuapi_decrypt_attribute_value(TALLOC_CTX *mem_ctx,
*/
crc32_given = IVAL(dec_buffer.data, 0);
crc32_calc = crc32_calc_buffer(dec_buffer.data + 4 , dec_buffer.length - 4);
- if (crc32_given != crc32_calc) {
- return WERR_SEC_E_DECRYPT_FAILURE;
- }
checked_buffer = data_blob_const(dec_buffer.data + 4, dec_buffer.length - 4);
plain_buffer = data_blob_talloc(mem_ctx, checked_buffer.data, checked_buffer.length);
W_ERROR_HAVE_NO_MEMORY(plain_buffer.data);
+ if (crc32_given != crc32_calc) {
+ return WERR_SEC_E_DECRYPT_FAILURE;
+ }
/*
* The following rid_crypt obfuscation isn't session specific
* and not really needed here, because we allways know the rid of the
@@ -188,12 +188,12 @@ WERROR drsuapi_decrypt_attribute(TALLOC_CTX *mem_ctx,
return WERR_OK;
}
-WERROR drsuapi_encrypt_attribute_value(TALLOC_CTX *mem_ctx,
- const DATA_BLOB *gensec_skey,
- bool rid_crypt,
- uint32_t rid,
- DATA_BLOB *in,
- DATA_BLOB *out)
+static WERROR drsuapi_encrypt_attribute_value(TALLOC_CTX *mem_ctx,
+ const DATA_BLOB *gensec_skey,
+ bool rid_crypt,
+ uint32_t rid,
+ DATA_BLOB *in,
+ DATA_BLOB *out)
{
DATA_BLOB rid_crypt_out = data_blob(NULL, 0);
DATA_BLOB confounder;
@@ -273,7 +273,7 @@ WERROR drsuapi_encrypt_attribute_value(TALLOC_CTX *mem_ctx,
* of the remaining bytes
*/
crc32_calc = crc32_calc_buffer(in->data, in->length);
- SIVAL(enc_buffer.data, 4, crc32_calc);
+ SIVAL(enc_buffer.data, 16, crc32_calc);
/*
* copy the plain buffer part and
@@ -282,9 +282,71 @@ WERROR drsuapi_encrypt_attribute_value(TALLOC_CTX *mem_ctx,
memcpy(enc_buffer.data+20, in->data, in->length);
talloc_free(rid_crypt_out.data);
- arcfour_crypt_blob(enc_buffer.data+20, enc_buffer.length-20, &enc_key);
+ arcfour_crypt_blob(enc_buffer.data+16, enc_buffer.length-16, &enc_key);
*out = enc_buffer;
+
+ return WERR_OK;
+}
+
+/*
+ encrypt a DRSUAPI attribute ready for sending over the wire
+ Only some attribute types are encrypted
+ */
+WERROR drsuapi_encrypt_attribute(TALLOC_CTX *mem_ctx,
+ const DATA_BLOB *gensec_skey,
+ uint32_t rid,
+ struct drsuapi_DsReplicaAttribute *attr)
+{
+ WERROR status;
+ DATA_BLOB *plain_data;
+ DATA_BLOB enc_data;
+ bool rid_crypt = false;
+
+ if (attr->value_ctr.num_values == 0) {
+ return WERR_OK;
+ }
+
+ switch (attr->attid) {
+ case DRSUAPI_ATTRIBUTE_dBCSPwd:
+ case DRSUAPI_ATTRIBUTE_unicodePwd:
+ case DRSUAPI_ATTRIBUTE_ntPwdHistory:
+ case DRSUAPI_ATTRIBUTE_lmPwdHistory:
+ rid_crypt = true;
+ break;
+ case DRSUAPI_ATTRIBUTE_supplementalCredentials:
+ case DRSUAPI_ATTRIBUTE_priorValue:
+ case DRSUAPI_ATTRIBUTE_currentValue:
+ case DRSUAPI_ATTRIBUTE_trustAuthOutgoing:
+ case DRSUAPI_ATTRIBUTE_trustAuthIncoming:
+ case DRSUAPI_ATTRIBUTE_initialAuthOutgoing:
+ case DRSUAPI_ATTRIBUTE_initialAuthIncoming:
+ break;
+ default:
+ return WERR_OK;
+ }
+
+ if (attr->value_ctr.num_values > 1) {
+ return WERR_DS_DRA_INVALID_PARAMETER;
+ }
+
+ if (!attr->value_ctr.values[0].blob) {
+ return WERR_DS_DRA_INVALID_PARAMETER;
+ }
+
+ plain_data = attr->value_ctr.values[0].blob;
+
+ status = drsuapi_encrypt_attribute_value(mem_ctx,
+ gensec_skey,
+ rid_crypt,
+ rid,
+ plain_data,
+ &enc_data);
+ W_ERROR_NOT_OK_RETURN(status);
+
+ talloc_free(attr->value_ctr.values[0].blob->data);
+ *attr->value_ctr.values[0].blob = enc_data;
+
return WERR_OK;
}
diff --git a/source4/dsdb/repl/replicated_objects.c b/source4/dsdb/repl/replicated_objects.c
index 4002ea8..459c7b5 100644
--- a/source4/dsdb/repl/replicated_objects.c
+++ b/source4/dsdb/repl/replicated_objects.c
@@ -243,7 +243,10 @@ WERROR dsdb_extended_replicated_objects_commit(struct ldb_context *ldb,
status = dsdb_convert_object_ex(ldb, schema,
cur, gensec_skey,
out->objects, &out->objects[i]);
- W_ERROR_NOT_OK_RETURN(status);
+ if (!W_ERROR_IS_OK(status)) {
+ DEBUG(0,("Failed to convert object %s\n", cur->object.identifier->dn));
+ return status;
+ }
}
if (i != out->num_objects) {
return WERR_FOOBAR;
diff --git a/source4/rpc_server/drsuapi/getncchanges.c b/source4/rpc_server/drsuapi/getncchanges.c
index 17bc3ca..2d06970 100644
--- a/source4/rpc_server/drsuapi/getncchanges.c
+++ b/source4/rpc_server/drsuapi/getncchanges.c
@@ -30,20 +30,26 @@
#include "librpc/gen_ndr/ndr_drsblobs.h"
#include "auth/auth.h"
#include "rpc_server/drsuapi/dcesrv_drsuapi.h"
+#include "rpc_server/dcerpc_server_proto.h"
+#include "../libcli/drsuapi/drsuapi.h"
+#include "../libcli/security/dom_sid.h"
/*
- drsuapi_DsGetNCChanges
+ drsuapi_DsGetNCChanges for one object
*/
static WERROR get_nc_changes_build_object(struct drsuapi_DsReplicaObjectListItemEx *obj,
struct ldb_message *msg,
struct ldb_context *sam_ctx,
struct ldb_dn *ncRoot_dn,
- struct dsdb_schema *schema)
+ struct dsdb_schema *schema,
+ DATA_BLOB *session_key)
{
const struct ldb_val *md_value;
int i;
struct ldb_dn *obj_dn;
struct replPropertyMetaDataBlob md;
+ struct dom_sid *sid;
+ uint32_t rid = 0;
if (ldb_dn_compare(ncRoot_dn, msg->dn) == 0) {
obj->is_nc_prefix = true;
@@ -87,7 +93,13 @@ static WERROR get_nc_changes_build_object(struct drsuapi_DsReplicaObjectListItem
obj_dn = ldb_msg_find_attr_as_dn(sam_ctx, obj, msg, "distinguishedName");
obj->object.identifier->dn = ldb_dn_get_linearized(obj_dn);
obj->object.identifier->guid = samdb_result_guid(msg, "objectGUID");
- ZERO_STRUCT(obj->object.identifier->sid);
+ sid = samdb_result_dom_sid(obj, msg, "objectSid");
+ if (sid) {
+ dom_sid_split_rid(NULL, sid, NULL, &rid);
+ obj->object.identifier->sid = *sid;
+ } else {
+ ZERO_STRUCT(obj->object.identifier->sid);
+ }
obj->object.attribute_ctr.num_attributes = obj->meta_data_ctr->count;
obj->object.attribute_ctr.attributes = talloc_array(obj, struct drsuapi_DsReplicaAttribute,
@@ -122,6 +134,16 @@ static WERROR get_nc_changes_build_object(struct drsuapi_DsReplicaObjectListItem
sa->lDAPDisplayName, win_errstr(werr)));
return werr;
}
+
+ /* some attributes needs to be encrypted
+ before being sent */
+ werr = drsuapi_encrypt_attribute(obj, session_key, rid,
+ &obj->object.attribute_ctr.attributes[i]);
+ if (!W_ERROR_IS_OK(werr)) {
+ DEBUG(0,("Unable to encrypt %s in DRS object - %s\n",
+ sa->lDAPDisplayName, win_errstr(werr)));
+ return werr;
+ }
}
}
@@ -145,11 +167,16 @@ WERROR dcesrv_drsuapi_DsGetNCChanges(struct dcesrv_call_state *dce_call, TALLOC_
time_t t = time(NULL);
NTTIME now;
struct drsuapi_DsReplicaObjectListItemEx *currentObject;
+ NTSTATUS status;
+ DATA_BLOB session_key;
/*
- * connect to the samdb
+ * connect to the samdb. TODO: We need to check that the caller
+ * has the rights to do this. This exposes all attributes,
+ * including all passwords.
*/
- sam_ctx = samdb_connect(mem_ctx, dce_call->event_ctx, dce_call->conn->dce_ctx->lp_ctx, dce_call->conn->auth_state.session_info);
+ sam_ctx = samdb_connect(mem_ctx, dce_call->event_ctx, dce_call->conn->dce_ctx->lp_ctx,
+ system_session(mem_ctx, dce_call->conn->dce_ctx->lp_ctx));
if (!sam_ctx) {
return WERR_FOOBAR;
}
@@ -172,6 +199,13 @@ WERROR dcesrv_drsuapi_DsGetNCChanges(struct dcesrv_call_state *dce_call, TALLOC_
DEBUG(4,("DsGetNSChanges with uSNChanged >= %llu\n",
(unsigned long long)r->in.req->req8.highwatermark.highest_usn));
+ /* we need the session key for encrypting password attributes */
+ status = dcesrv_inherited_session_key(dce_call->conn, &session_key);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0,(__location__ ": Failed to get session key\n"));
+ return WERR_DS_DRA_INTERNAL_ERROR;
+ }
+
/* Construct response. */
ncRoot_dn = ldb_dn_new(mem_ctx, sam_ctx, ncRoot->dn);
ret = drsuapi_search_with_extended_dn(sam_ctx, mem_ctx, &site_res,
@@ -222,7 +256,8 @@ WERROR dcesrv_drsuapi_DsGetNCChanges(struct dcesrv_call_state *dce_call, TALLOC_
r->out.ctr->ctr6.new_highwatermark.highest_usn = uSN;
}
- werr = get_nc_changes_build_object(currentObject, site_res->msgs[i], sam_ctx, ncRoot_dn, schema);
+ werr = get_nc_changes_build_object(currentObject, site_res->msgs[i], sam_ctx, ncRoot_dn,
+ schema, &session_key);
if (!W_ERROR_IS_OK(werr)) {
r->out.ctr->ctr6.first_object = NULL;
return werr;
diff --git a/source4/scripting/python/samba/provision.py b/source4/scripting/python/samba/provision.py
index ca38a85..0ed2a57 100644
--- a/source4/scripting/python/samba/provision.py
+++ b/source4/scripting/python/samba/provision.py
@@ -577,14 +577,14 @@ def setup_samdb_partitions(samdb_path, setup_path, message, lp, session_info,
"objectclass",
"samldb",
"password_hash",
- "operational"]
+ "operational",
+ "kludge_acl"]
tdb_modules_list = [
"subtree_rename",
"subtree_delete",
"linked_attributes",
"extended_dn_out_ldb"]
modules_list2 = ["show_deleted",
- "kludge_acl",
"partition"]
domaindn_ldb = "users.ldb"
--
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