diff options
Diffstat (limited to 'source3/lib/ldb/modules')
| -rw-r--r-- | source3/lib/ldb/modules/schema.c | 486 |
1 files changed, 0 insertions, 486 deletions
diff --git a/source3/lib/ldb/modules/schema.c b/source3/lib/ldb/modules/schema.c deleted file mode 100644 index 221263a869..0000000000 --- a/source3/lib/ldb/modules/schema.c +++ /dev/null @@ -1,486 +0,0 @@ -/* - ldb database library - - Copyright (C) Simo Sorce 2004-2005 - - ** NOTE! The following LGPL license applies to the ldb - ** library. This does NOT imply that all of Samba is released - ** under the LGPL - - This library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2 of the License, or (at your option) any later version. - - This library 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with this library; if not, write to the Free Software - Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA -*/ - -/* - * Name: ldb - * - * Component: ldb schema module - * - * Description: add schema check functionality - * - * Author: Simo Sorce - */ - -#include "includes.h" -#include "ldb/include/includes.h" - -#define SCHEMA_FLAG_RESET 0 -#define SCHEMA_FLAG_MOD_MASK 0x003 -#define SCHEMA_FLAG_MOD_ADD 0x001 -#define SCHEMA_FLAG_MOD_REPLACE 0x002 -#define SCHEMA_FLAG_MOD_DELETE 0x003 -#define SCHEMA_FLAG_AUXILIARY 0x010 -#define SCHEMA_FLAG_ABSTRACT 0x020 -#define SCHEMA_FLAG_STRUCTURAL 0x040 -#define SCHEMA_FLAG_CHECKED 0x100 - - -/* TODO: check attributes syntaxes - check there's only one structrual class (or a chain of structural classes) -*/ - -struct schema_attribute { - int flags; - char *name; -}; - -struct schema_attribute_list { - struct schema_attribute *attr; - int num; -}; - -struct schema_structures { - struct schema_attribute_list entry_attrs; - struct schema_attribute_list objectclasses; - struct schema_attribute_list required_attrs; - struct schema_attribute_list optional_attrs; -}; - -static struct schema_attribute *schema_find_attribute(struct schema_attribute_list *list, const char *attr_name) -{ - unsigned int i; - for (i = 0; i < list->num; i++) { - if (ldb_attr_cmp(list->attr[i].name, attr_name) == 0) { - return &(list->attr[i]); - } - } - return NULL; -} - -/* get all the attributes and objectclasses found in msg and put them in schema_structure - attributes go in the entry_attrs structure for later checking - objectclasses go in the objectclasses structure */ -static int get_msg_attributes(struct schema_structures *ss, const struct ldb_message *msg, int flag_mask) -{ - int i, j, anum, cnum; - - ss->entry_attrs.attr = talloc_realloc(ss, ss->entry_attrs.attr, - struct schema_attribute, - ss->entry_attrs.num + msg->num_elements); - if (ss->entry_attrs.attr == NULL) { - return -1; - } - - for (i = 0, anum = ss->entry_attrs.num; i < msg->num_elements; i++) { - - if (ldb_attr_cmp(msg->elements[i].name, "objectclass") == 0) { - - ss->objectclasses.attr = talloc_realloc(ss, ss->objectclasses.attr, - struct schema_attribute, - ss->objectclasses.num + msg->elements[i].num_values); - if (ss->objectclasses.attr == NULL) { - return -1; - } - - for (j = 0, cnum = ss->objectclasses.num; j < msg->elements[i].num_values; j++) { - ss->objectclasses.attr[cnum+j].name = (char *)msg->elements[i].values[j].data; - ss->objectclasses.attr[cnum+j].flags = msg->elements[i].flags & flag_mask; - } - ss->objectclasses.num += msg->elements[i].num_values; - } - - /* TODO: Check for proper attribute Syntax ! */ - - ss->entry_attrs.attr[anum+i].flags = msg->elements[i].flags & flag_mask; - ss->entry_attrs.attr[anum+i].name = talloc_reference(ss->entry_attrs.attr, - msg->elements[i].name); - if (ss->entry_attrs.attr[anum+i].name == NULL) { - return -1; - } - } - ss->entry_attrs.num += msg->num_elements; - - return 0; -} - -static int get_entry_attributes(struct ldb_context *ldb, const struct ldb_dn *dn, struct schema_structures *ss) -{ - struct ldb_result *srch; - int ret; - - ret = ldb_search(ldb, dn, LDB_SCOPE_BASE, NULL, NULL, &srch); - if (ret != 1) { - return ret; - } - talloc_steal(ss, srch); - - /* set flags to 0 as flags on search have undefined values */ - ret = get_msg_attributes(ss, *(srch->msgs), 0); - if (ret != 0) { - talloc_free(srch); - return ret; - } - - return 0; -} - -/* add all attributes in el avoiding duplicates in schema_attribute_list */ -static int add_attribute_uniq(void *mem_ctx, struct schema_attribute_list *list, int flags, struct ldb_message_element *el) -{ - int i, j, vals; - - vals = el->num_values; - list->attr = talloc_realloc(mem_ctx, list->attr, struct schema_attribute, list->num + vals); - if (list->attr == NULL) { - return -1; - } - for (i = 0, j = 0; i < vals; i++) { - int c, found, len; - - found = 0; - for (c = 0; c < list->num; c++) { - len = strlen(list->attr[c].name); - if (len == el->values[i].length) { - if (ldb_attr_cmp(list->attr[c].name, - (char *)el->values[i].data) == 0) { - found = 1; - break; - } - } - } - if (!found) { - list->attr[j + list->num].name = (char *)el->values[i].data; - list->attr[j + list->num].flags = flags; - j++; - } - } - list->num += j; - - return 0; -} - - -/* we need to get all attributes referenced by the entry objectclasses, - recursively get parent objectlasses attributes */ -static int get_attr_list_recursive(struct ldb_module *module, struct schema_structures *schema_struct) -{ - struct ldb_result *srch; - int i, j; - int ret; - - for (i = 0; i < schema_struct->objectclasses.num; i++) { - char *filter; - - if ((schema_struct->objectclasses.attr[i].flags & SCHEMA_FLAG_MOD_MASK) == SCHEMA_FLAG_MOD_DELETE) { - continue; - } - filter = talloc_asprintf(schema_struct, "lDAPDisplayName=%s", schema_struct->objectclasses.attr[i].name); - if (filter == NULL) { - return -1; - } - - ret = ldb_search(module->ldb, NULL, LDB_SCOPE_SUBTREE, filter, NULL, &srch); - if (ret != LDB_SUCCESS) { - /* Schema DB Error: Error occurred retrieving - Object Class Description */ - ldb_debug_set(module->ldb, LDB_DEBUG_ERROR, - "Error retrieving Objectclass %s.\n", - schema_struct->objectclasses.attr[i].name); - return -1; - } - - talloc_steal(schema_struct, srch); - - if (srch->count > 1) { - /* Schema DB Error: Too Many Records */ - ldb_debug_set(module->ldb, LDB_DEBUG_ERROR, - "Too many records found retrieving Objectclass %s.\n", - schema_struct->objectclasses.attr[i].name); - return -1; - } - - /* Add inherited classes eliminating duplicates */ - /* fill in required_attrs and optional_attrs attribute lists */ - for (j = 0; j < srch->msgs[0]->num_elements; j++) { - int is_aux, is_class; - - is_aux = 0; - is_class = 0; - if (ldb_attr_cmp(srch->msgs[0]->elements[j].name, "systemAuxiliaryclass") == 0) { - is_aux = SCHEMA_FLAG_AUXILIARY; - is_class = 1; - } - if (ldb_attr_cmp(srch->msgs[0]->elements[j].name, "auxiliaryClass") == 0) { - is_aux = SCHEMA_FLAG_AUXILIARY; - is_class = 1; - } - if (ldb_attr_cmp(srch->msgs[0]->elements[j].name, "subClassOf") == 0) { - is_class = 1; - } - - if (is_class) { - if (add_attribute_uniq(schema_struct, - &schema_struct->objectclasses, - is_aux, - &srch->msgs[0]->elements[j]) != 0) { - return -1; - } - } else { - - if (ldb_attr_cmp(srch->msgs[0]->elements[j].name, "mustContain") == 0 || - ldb_attr_cmp(srch->msgs[0]->elements[j].name, "SystemMustContain") == 0) { - if (add_attribute_uniq(schema_struct, - &schema_struct->required_attrs, - SCHEMA_FLAG_RESET, - &srch->msgs[0]->elements[j]) != 0) { - return -1; - } - } - - if (ldb_attr_cmp(srch->msgs[0]->elements[j].name, "mayContain") == 0 || - ldb_attr_cmp(srch->msgs[0]->elements[j].name, "SystemMayContain") == 0) { - - if (add_attribute_uniq(schema_struct, - &schema_struct->optional_attrs, - SCHEMA_FLAG_RESET, - &srch->msgs[0]->elements[j]) != 0) { - return -1; - } - } - } - } - } - - return 0; -} - -/* add_record */ -static int schema_add(struct ldb_module *module, struct ldb_request *req) -{ - const struct ldb_message *msg = req->op.add.message; - struct schema_structures *entry_structs; - unsigned int i; - int ret; - - /* First implementation: - Build up a list of required_attrs and optional_attrs attributes from each objectclass - Check all the required_attrs attributes are present and all the other attributes - are optional_attrs attributes - Throw an error in case a check fail - Free all structures and commit the change - */ - - /* do not check on our control entries */ - if (ldb_dn_is_special(msg->dn)) { - return ldb_next_request(module, req); - } - - /* TODO: check parent exists */ - - entry_structs = talloc_zero(module, struct schema_structures); - if (!entry_structs) { - return -1; - } - - ret = get_msg_attributes(entry_structs, msg, SCHEMA_FLAG_MOD_MASK); - if (ret != 0) { - talloc_free(entry_structs); - return ret; - } - - ret = get_attr_list_recursive(module, entry_structs); - if (ret != 0) { - talloc_free(entry_structs); - return ret; - } - - /* now check all required_attrs attributes are present */ - for (i = 0; i < entry_structs->required_attrs.num; i++) { - struct schema_attribute *attr; - - attr = schema_find_attribute(&entry_structs->entry_attrs, - entry_structs->required_attrs.attr[i].name); - - if (attr == NULL) { /* not found */ - ldb_debug_set(module->ldb, LDB_DEBUG_ERROR, - "The required_attrs attribute %s is missing.\n", - entry_structs->required_attrs.attr[i].name); - talloc_free(entry_structs); - return LDB_ERR_OBJECT_CLASS_VIOLATION; - } - - /* mark the attribute as checked */ - attr->flags = SCHEMA_FLAG_CHECKED; - } - - /* now check all others atribs are at least optional_attrs */ - for (i = 0; i < entry_structs->entry_attrs.num; i++) { - - if (entry_structs->entry_attrs.attr[i].flags != SCHEMA_FLAG_CHECKED) { - struct schema_attribute *attr; - - attr = schema_find_attribute(&entry_structs->optional_attrs, - entry_structs->entry_attrs.attr[i].name); - - if (attr == NULL) { /* not found */ - ldb_debug_set(module->ldb, LDB_DEBUG_ERROR, - "The attribute %s is not referenced by any objectclass.\n", - entry_structs->entry_attrs.attr[i].name); - talloc_free(entry_structs); - return LDB_ERR_OBJECT_CLASS_VIOLATION; - } - } - } - - talloc_free(entry_structs); - - return ldb_next_request(module, req); -} - -/* modify_record */ -static int schema_modify(struct ldb_module *module, struct ldb_request *req) -{ - const struct ldb_message *msg = req->op.mod.message; - struct schema_structures *entry_structs; - unsigned int i; - int ret; - - /* First implementation: - Retrieve the ldap entry and get the objectclasses, - add msg contained objectclasses if any. - Build up a list of required_attrs and optional_attrs attributes from each objectclass - Check all the attributes are optional_attrs or required_attrs. - Throw an error in case a check fail. - Free all structures and commit the change. - */ - - /* do not check on our control entries */ - if (ldb_dn_is_special(msg->dn)) { - return ldb_next_request(module, req); - } - - /* allocate object structs */ - entry_structs = talloc_zero(module, struct schema_structures); - if (!entry_structs) { - return -1; - } - - /* now search for the stored entry objectclasses and attributes*/ - ret = get_entry_attributes(module->ldb, msg->dn, entry_structs); - if (ret != 0) { - talloc_free(entry_structs); - return ret; - } - - /* get list of values to modify */ - ret = get_msg_attributes(entry_structs, msg, SCHEMA_FLAG_MOD_MASK); - if (ret != 0) { - talloc_free(entry_structs); - return ret; - } - - ret = get_attr_list_recursive(module, entry_structs); - if (ret != 0) { - talloc_free(entry_structs); - return ret; - } - - /* now check all required_attrs attributes are present */ - for (i = 0; i < entry_structs->required_attrs.num; i++) { - struct schema_attribute *attr; - - attr = schema_find_attribute(&entry_structs->entry_attrs, - entry_structs->required_attrs.attr[i].name); - - if (attr == NULL) { /* not found */ - ldb_debug_set(module->ldb, LDB_DEBUG_ERROR, - "The required_attrs attribute %s is missing.\n", - entry_structs->required_attrs.attr[i].name); - talloc_free(entry_structs); - return LDB_ERR_OBJECT_CLASS_VIOLATION; - } - - /* check we are not trying to delete a required attribute */ - /* TODO: consider multivalued attrs */ - if ((attr->flags & SCHEMA_FLAG_MOD_DELETE) != 0) { - ldb_debug_set(module->ldb, LDB_DEBUG_ERROR, - "Trying to delete the required attribute %s.\n", - attr->name); - talloc_free(entry_structs); - return LDB_ERR_OBJECT_CLASS_VIOLATION; - } - - /* mark the attribute as checked */ - attr->flags = SCHEMA_FLAG_CHECKED; - } - - /* now check all others atribs are at least optional_attrs */ - for (i = 0; i < entry_structs->entry_attrs.num; i++) { - - if (entry_structs->entry_attrs.attr[i].flags != SCHEMA_FLAG_CHECKED) { - struct schema_attribute *attr; - - attr = schema_find_attribute(&entry_structs->optional_attrs, - entry_structs->entry_attrs.attr[i].name); - - if (attr == NULL) { /* not found */ - ldb_debug_set(module->ldb, LDB_DEBUG_ERROR, - "The attribute %s is not referenced by any objectclass.\n", - entry_structs->entry_attrs.attr[i].name); - talloc_free(entry_structs); - return LDB_ERR_OBJECT_CLASS_VIOLATION; - } - } - } - - talloc_free(entry_structs); - - return ldb_next_request(module, req); -} - -static int schema_request(struct ldb_module *module, struct ldb_request *req) -{ - switch (req->operation) { - - case LDB_ADD: - return schema_add(module, req); - - case LDB_MODIFY: - return schema_modify(module, req); - - default: - return ldb_next_request(module, req); - - } -} - -static const struct ldb_module_ops schema_ops = { - .name = "schema", - .request = schema_request -}; - -int ldb_schema_init(void) -{ - return ldb_register_module(&schema_ops); -} |