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|
/*
ldb database library
Copyright (C) Derrell Lipman 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 sqlite3 backend
*
* Description: core files for SQLITE3 backend
*
* Author: Derrell Lipman (based on Andrew Tridgell's LDAP backend)
*/
#include <stdarg.h>
#include "includes.h"
#include "ldb/include/ldb.h"
#include "ldb/include/ldb_private.h"
#include "ldb/include/ldb_explode_dn.h"
#include "ldb/ldb_sqlite3/ldb_sqlite3.h"
/*
* Macros used throughout
*/
#ifndef FALSE
# define FALSE (0)
# define TRUE (! FALSE)
#endif
#define FILTER_ATTR_TABLE "temp_filter_attrs"
#define RESULT_ATTR_TABLE "temp_result_attrs"
#define QUERY_NOROWS(lsqlite3, bRollbackOnError, sql...) \
do { \
if (query_norows(lsqlite3, sql) != 0) { \
if (bRollbackOnError) { \
query_norows(lsqlite3, \
"ROLLBACK;"); \
} \
return -1; \
} \
} while (0)
#define QUERY_INT(lsqlite3, result_var, bRollbackOnError, sql...) \
do { \
if (query_int(lsqlite3, &result_var, sql) != 0) { \
if (bRollbackOnError) { \
query_norows(lsqlite3, \
"ROLLBACK;"); \
} \
return -1; \
} \
} while (0)
/*
* Static variables
*/
static int lsqlite3_debug = TRUE;
/*
* Forward declarations
*/
static int
lsqlite3_rename(struct ldb_module * module,
const char * olddn,
const char * newdn);
static int
lsqlite3_delete(struct ldb_module *module,
const char *dn);
static int
lsqlite3_search_bytree(struct ldb_module * module,
const char * pBaseDN,
enum ldb_scope scope,
struct ldb_parse_tree * pTree,
const char * const * attrs,
struct ldb_message *** pppRes);
static int
lsqlite3_search(struct ldb_module * module,
const char * pBaseDN,
enum ldb_scope scope,
const char * pExpression,
const char * const attrs[],
struct ldb_message *** pppRes);
static int
lsqlite3_add(struct ldb_module *module,
const struct ldb_message *msg);
static int
lsqlite3_modify(struct ldb_module *module,
const struct ldb_message *msg);
static int
lsqlite3_lock(struct ldb_module *module,
const char *lockname);
static int
lsqlite3_unlock(struct ldb_module *module,
const char *lockname);
static const char *
lsqlite3_errstring(struct ldb_module *module);
static int
initialize(struct lsqlite3_private *lsqlite3,
const char *url);
static int
destructor(void *p);
static int
query_norows(const struct lsqlite3_private *lsqlite3,
const char *pSql,
...);
static int
query_int(const struct lsqlite3_private * lsqlite3,
long long * pRet,
const char * pSql,
...);
static int case_fold_attr_required(void * hUserData,
char *attr);
static int
add_msg_attr(void * hTalloc,
long long eid,
const char * pDN,
const char * pAttrName,
const char * pAttrValue,
long long prevEID,
int * pAllocated,
struct ldb_message *** pppRes);
static char *
parsetree_to_sql(struct ldb_module *module,
char * hTalloc,
const struct ldb_parse_tree *t);
static int
parsetree_to_attrlist(struct lsqlite3_private * lsqlite3,
const struct ldb_parse_tree * t);
#ifdef NEED_TABLE_LIST
static char *
build_attr_table_list(void * hTalloc,
struct lsqlite3_private * lsqlite3);
#endif
static int
msg_to_sql(struct ldb_module * module,
const struct ldb_message * msg,
long long eid,
int use_flags);
static int
new_dn(struct ldb_module * module,
char * pDN,
long long * pEID);
static int
new_attr(struct ldb_module * module,
char * pAttrName);
/*
* Table of operations for the sqlite3 backend
*/
static const struct ldb_module_ops lsqlite3_ops = {
.name = "sqlite",
.search = lsqlite3_search,
.search_bytree = lsqlite3_search_bytree,
.add_record = lsqlite3_add,
.modify_record = lsqlite3_modify,
.delete_record = lsqlite3_delete,
.rename_record = lsqlite3_rename,
.named_lock = lsqlite3_lock,
.named_unlock = lsqlite3_unlock,
.errstring = lsqlite3_errstring
};
/*
* Public functions
*/
/*
* connect to the database
*/
struct ldb_context *
lsqlite3_connect(const char *url,
unsigned int flags,
const char *options[])
{
int i;
int ret;
struct ldb_context * ldb = NULL;
struct lsqlite3_private * lsqlite3 = NULL;
ldb = talloc(NULL, struct ldb_context);
if (!ldb) {
goto failed;
}
lsqlite3 = talloc(ldb, struct lsqlite3_private);
if (!lsqlite3) {
goto failed;
}
lsqlite3->sqlite = NULL;
lsqlite3->options = NULL;
lsqlite3->lock_count = 0;
ret = initialize(lsqlite3, url);
if (ret != SQLITE_OK) {
goto failed;
}
talloc_set_destructor(lsqlite3, destructor);
ldb->modules = talloc(ldb, struct ldb_module);
if (!ldb->modules) {
goto failed;
}
ldb->modules->ldb = ldb;
ldb->modules->prev = ldb->modules->next = NULL;
ldb->modules->private_data = lsqlite3;
ldb->modules->ops = &lsqlite3_ops;
if (options) {
/*
* take a copy of the options array, so we don't have to rely
* on the caller keeping it around (it might be dynamic)
*/
for (i=0;options[i];i++) ;
lsqlite3->options = talloc_array(lsqlite3, char *, i+1);
if (!lsqlite3->options) {
goto failed;
}
for (i=0;options[i];i++) {
lsqlite3->options[i+1] = NULL;
lsqlite3->options[i] =
talloc_strdup(lsqlite3->options, options[i]);
if (!lsqlite3->options[i]) {
goto failed;
}
}
}
return ldb;
failed:
if (lsqlite3->sqlite != NULL) {
(void) sqlite3_close(lsqlite3->sqlite);
}
talloc_free(ldb);
return NULL;
}
/*
* Interface functions referenced by lsqlite3_ops
*/
/* rename a record */
static int
lsqlite3_rename(struct ldb_module * module,
const char * pOldDN,
const char * pNewDN)
{
struct lsqlite3_private * lsqlite3 = module->private_data;
/* Case-fold each of the DNs */
pOldDN = ldb_dn_fold(module->ldb, pOldDN,
module, case_fold_attr_required);
pNewDN = ldb_dn_fold(module->ldb, pNewDN,
module, case_fold_attr_required);
QUERY_NOROWS(lsqlite3,
FALSE,
"UPDATE ldb_entry "
" SET dn = %Q "
" WHERE dn = %Q;",
pNewDN, pOldDN);
return 0;
}
/* delete a record */
static int
lsqlite3_delete(struct ldb_module * module,
const char * pDN)
{
int ret;
int bLoop;
long long eid;
char * pSql;
const char * pAttrName;
sqlite3_stmt * pStmt;
struct lsqlite3_private * lsqlite3 = module->private_data;
/* Begin a transaction */
QUERY_NOROWS(lsqlite3, FALSE, "BEGIN EXCLUSIVE;");
/* Determine the eid of the DN being deleted */
QUERY_INT(lsqlite3,
eid,
TRUE,
"SELECT eid\n"
" FROM ldb_entry\n"
" WHERE dn = %Q;",
pDN);
/* Obtain the list of attribute names in use by this DN */
if ((pSql = talloc_asprintf(module->ldb,
"SELECT attr_name "
" FROM ldb_attribute_values "
" WHERE eid = %lld;",
eid)) == NULL) {
return -1;
}
/*
* Prepare and execute the SQL statement. Loop allows retrying on
* certain errors, e.g. SQLITE_SCHEMA occurs if the schema changes,
* requiring retrying the operation.
*/
for (bLoop = TRUE; bLoop; ) {
/* Compile the SQL statement into sqlite virtual machine */
if ((ret = sqlite3_prepare(lsqlite3->sqlite,
pSql,
-1,
&pStmt,
NULL)) == SQLITE_SCHEMA) {
continue;
} else if (ret != SQLITE_OK) {
ret = -1;
break;
}
/* Loop through the returned rows */
for (ret = SQLITE_ROW; ret == SQLITE_ROW; ) {
/* Get the next row */
if ((ret = sqlite3_step(pStmt)) == SQLITE_ROW) {
/* Get the values from this row */
pAttrName = sqlite3_column_text(pStmt, 0);
/*
* Delete any entries from the specified
* attribute table that pertain to this eid.
*/
QUERY_NOROWS(lsqlite3,
TRUE,
"DELETE FROM ldb_attr_%q "
" WHERE eid = %lld;",
pAttrName, eid);
}
}
if (ret == SQLITE_SCHEMA) {
(void) sqlite3_finalize(pStmt);
continue;
} else if (ret != SQLITE_DONE) {
(void) sqlite3_finalize(pStmt);
ret = -1;
break;
}
/* Free the virtual machine */
if ((ret = sqlite3_finalize(pStmt)) == SQLITE_SCHEMA) {
(void) sqlite3_finalize(pStmt);
continue;
} else if (ret != SQLITE_OK) {
(void) sqlite3_finalize(pStmt);
ret = -1;
break;
}
/*
* Normal condition is only one time through loop. Loop is
* rerun in error conditions, via "continue", above.
*/
ret = 0;
bLoop = FALSE;
}
/* Delete the descendants records */
QUERY_NOROWS(lsqlite3,
TRUE,
"DELETE FROM ldb_descendants "
" WHERE deid = %lld;",
eid);
/* Delete attribute/value table entries pertaining to this DN */
QUERY_NOROWS(lsqlite3,
TRUE,
"DELETE FROM ldb_attribute_value "
" WHERE eid = %lld;",
eid);
/* Commit the transaction */
QUERY_NOROWS(lsqlite3, TRUE, "COMMIT;");
return 0;
}
/* search for matching records, by tree */
static int
lsqlite3_search_bytree(struct ldb_module * module,
const char * pBaseDN,
enum ldb_scope scope,
struct ldb_parse_tree * pTree,
const char * const * attrs,
struct ldb_message *** pppRes)
{
int ret;
int allocated;
int bLoop;
long long eid = 0;
long long prevEID;
char * pSql = NULL;
char * pSqlConstraints;
#ifdef NEED_TABLE_LIST
char * pTableList;
#endif
char * hTalloc = NULL;
const char * pDN;
const char * pAttrName;
const char * pAttrValue;
const char * pResultAttrList;
const char * const * pRequestedAttrs;
sqlite3_stmt * pStmt;
struct lsqlite3_private * lsqlite3 = module->private_data;
if (pBaseDN == NULL) {
pBaseDN = "";
}
/* Allocate a temporary talloc context */
if ((hTalloc = talloc_new(module->ldb)) == NULL) {
return -1;
}
/* Case-fold the base DN */
if ((pBaseDN = ldb_dn_fold(hTalloc, pBaseDN,
module, case_fold_attr_required)) == NULL) {
talloc_free(hTalloc);
return -1;
}
/* Begin a transaction */
QUERY_NOROWS(lsqlite3, FALSE, "BEGIN IMMEDIATE;");
/*
* Obtain the eid of the base DN
*/
if ((ret = query_int(lsqlite3,
&eid,
"SELECT eid\n"
" FROM ldb_attr_DN\n"
" WHERE attr_value = %Q;",
pBaseDN)) == SQLITE_DONE) {
QUERY_NOROWS(lsqlite3, FALSE, "ROLLBACK;");
talloc_free(hTalloc);
return 0;
} else if (ret != SQLITE_OK) {
QUERY_NOROWS(lsqlite3, FALSE, "ROLLBACK;");
talloc_free(hTalloc);
return -1;
}
/* Convert filter into a series of SQL conditions (constraints) */
pSqlConstraints = parsetree_to_sql(module, hTalloc, pTree);
/* Ensure we're starting with an empty result attribute table */
QUERY_NOROWS(lsqlite3,
FALSE,
"DELETE FROM " RESULT_ATTR_TABLE "\n"
" WHERE 1;");/* avoid a schema change with WHERE 1 */
/* Initially, we don't know what the requested attributes are */
if (attrs == NULL) {
/* but they didn't give us any so we'll retrieve all of 'em */
pResultAttrList = "";
} else {
/* Discover the list of attributes */
pResultAttrList = NULL;
}
/* Insert the list of requested attributes into this table */
for (pRequestedAttrs = (const char * const *) attrs;
pRequestedAttrs != NULL && *pRequestedAttrs != NULL;
pRequestedAttrs++) {
/* If any attribute in the list is "*" then... */
if (strcmp(*pRequestedAttrs, "*") == 0) {
/* we want all attribute types */
pResultAttrList = "";
break;
} else {
/* otherwise, add this name to the resuult list */
QUERY_NOROWS(lsqlite3,
FALSE,
"INSERT OR IGNORE\n"
" INTO " RESULT_ATTR_TABLE "\n"
" (attr_name)\n"
" VALUES\n"
" (%Q);",
*pRequestedAttrs);
}
}
/* If we didn't get a "*" for all attributes in the result list... */
if (pResultAttrList == NULL) {
/* ... then we'll use the result attribute table */
pResultAttrList =
" AND av.attr_name IN\n"
" (SELECT attr_name\n"
" FROM " RESULT_ATTR_TABLE ") ";
}
/* Ensure we're starting with an empty filter attribute table */
QUERY_NOROWS(lsqlite3,
FALSE,
"DELETE FROM " FILTER_ATTR_TABLE "\n"
" WHERE 1;");/* avoid a schema change with WHERE 1 */
/*
* Create a table of unique attribute names for our extra table list
*/
if ((ret = parsetree_to_attrlist(lsqlite3, pTree)) != 0) {
ret = -1;
goto cleanup;
}
#ifdef NEED_TABLE_LIST
/*
* Build the attribute table list from the list of unique names.
*/
if ((pTableList = build_attr_table_list(hTalloc, lsqlite3)) == NULL) {
ret = -1;
goto cleanup;
}
#endif
switch(scope) {
case LDB_SCOPE_DEFAULT:
case LDB_SCOPE_SUBTREE:
pSql = sqlite3_mprintf(
"SELECT entry.eid,\n"
" entry.dn,\n"
" av.attr_name,\n"
" av.attr_value\n"
" FROM ldb_entry AS entry,\n"
" ldb_attribute_values AS av\n"
" WHERE entry.eid IN\n"
" (SELECT DISTINCT ldb_entry.eid\n"
" FROM ldb_entry,\n"
" ldb_descendants\n"
" WHERE ldb_descendants.aeid = %lld\n"
" AND ldb_entry.eid = ldb_descendants.deid\n"
" AND ldb_entry.eid IN\n%s\n"
" )\n"
" AND av.eid = entry.eid\n"
" %s\n"
" ORDER BY av.eid, av.attr_name;",
eid,
pSqlConstraints,
pResultAttrList);
break;
case LDB_SCOPE_BASE:
pSql = sqlite3_mprintf(
"SELECT entry.eid,\n"
" entry.dn,\n"
" av.attr_name,\n"
" av.attr_value\n"
" FROM ldb_entry AS entry,\n"
" ldb_attribute_values AS av\n"
" WHERE entry.eid IN\n"
" (SELECT DISTINCT ldb_entry.eid\n"
" FROM ldb_entry\n"
" WHERE ldb_entry.eid = %lld\n"
" AND ldb_entry.eid IN\n%s\n"
" )\n"
" AND av.eid = entry.eid\n"
" %s\n"
" ORDER BY av.eid, av.attr_name;",
eid,
pSqlConstraints,
pResultAttrList);
break;
case LDB_SCOPE_ONELEVEL:
pSql = sqlite3_mprintf(
"SELECT entry.eid,\n"
" entry.dn,\n"
" av.attr_name,\n"
" av.attr_value\n"
" FROM ldb_entry AS entry,\n"
" ldb_attribute_values AS av\n"
" WHERE entry.eid IN\n"
" (SELECT DISTINCT ldb_entry.eid\n"
" FROM ldb_entry AS pchild\n"
" WHERE ldb_entry.eid = pchild.eid\n"
" AND pchild.peid = %lld\n"
" AND ldb_entry.eid IN\n%s\n"
" )\n"
" AND av.eid = entry.eid\n"
" %s\n"
" ORDER BY av.eid, av.attr_name;\n",
eid,
pSqlConstraints,
pResultAttrList);
break;
}
if (pSql == NULL) {
ret = -1;
goto cleanup;
}
if (lsqlite3_debug) {
printf("%s\n", pSql);
}
/*
* Prepare and execute the SQL statement. Loop allows retrying on
* certain errors, e.g. SQLITE_SCHEMA occurs if the schema changes,
* requiring retrying the operation.
*/
for (bLoop = TRUE; bLoop; ) {
/* There are no allocate message structures yet */
allocated = 0;
if (pppRes != NULL) {
*pppRes = NULL;
}
/* Compile the SQL statement into sqlite virtual machine */
if ((ret = sqlite3_prepare(lsqlite3->sqlite,
pSql,
-1,
&pStmt,
NULL)) == SQLITE_SCHEMA) {
if (pppRes != NULL && *pppRes != NULL) {
talloc_free(*pppRes);
}
continue;
} else if (ret != SQLITE_OK) {
ret = -1;
break;
}
/* Initially, we have no previous eid */
prevEID = -1;
/* Loop through the returned rows */
for (ret = SQLITE_ROW; ret == SQLITE_ROW; ) {
/* Get the next row */
if ((ret = sqlite3_step(pStmt)) == SQLITE_ROW) {
/* Get the values from this row */
eid = sqlite3_column_int64(pStmt, 0);
pDN = sqlite3_column_text(pStmt, 1);
pAttrName = sqlite3_column_text(pStmt, 2);
pAttrValue = sqlite3_column_text(pStmt, 3);
/* Add this result to the result set */
if ((ret = add_msg_attr(hTalloc,
eid,
pDN,
pAttrName,
pAttrValue,
prevEID,
&allocated,
pppRes)) != 0) {
(void) sqlite3_finalize(pStmt);
ret = -1;
break;
}
}
}
if (ret == SQLITE_SCHEMA) {
(void) sqlite3_finalize(pStmt);
if (pppRes != NULL && *pppRes != NULL) {
talloc_free(*pppRes);
}
continue;
} else if (ret != SQLITE_DONE) {
(void) sqlite3_finalize(pStmt);
ret = -1;
break;
}
/* Free the virtual machine */
if ((ret = sqlite3_finalize(pStmt)) == SQLITE_SCHEMA) {
(void) sqlite3_finalize(pStmt);
if (pppRes != NULL && *pppRes != NULL) {
talloc_free(*pppRes);
}
continue;
} else if (ret != SQLITE_OK) {
(void) sqlite3_finalize(pStmt);
ret = -1;
break;
}
/*
* Normal condition is only one time through loop. Loop is
* rerun in error conditions, via "continue", above.
*/
ret = 0;
bLoop = FALSE;
}
/* We're alll done with this query */
sqlite3_free(pSql);
/* End the transaction */
QUERY_NOROWS(lsqlite3, FALSE, "END TRANSACTION;");
/* Were there any results? */
if (ret != 0 || allocated == 0) {
/* Nope. We can free the results. */
if (pppRes != NULL && *pppRes != NULL) {
talloc_free(*pppRes);
}
}
cleanup:
/* Clean up our temporary tables */
QUERY_NOROWS(lsqlite3,
FALSE,
"DELETE FROM " RESULT_ATTR_TABLE "\n"
" WHERE 1;");/* avoid a schema change with WHERE 1 */
QUERY_NOROWS(lsqlite3,
FALSE,
"DELETE FROM " FILTER_ATTR_TABLE "\n"
" WHERE 1;");/* avoid a schema change with WHERE 1 */
if (hTalloc != NULL) {
talloc_free(hTalloc);
}
/* If error, return error code; otherwise return number of results */
return ret == 0 ? allocated : ret;
}
/* search for matching records, by expression */
static int
lsqlite3_search(struct ldb_module * module,
const char * pBaseDN,
enum ldb_scope scope,
const char * pExpression,
const char * const * attrs,
struct ldb_message *** pppRes)
{
int ret;
struct ldb_parse_tree * pTree;
/* Parse the filter expression into a tree we can work with */
if ((pTree = ldb_parse_tree(module->ldb, pExpression)) == NULL) {
return -1;
}
/* Now use the bytree function for the remainder of processing */
ret = lsqlite3_search_bytree(module, pBaseDN, scope,
pTree, attrs, pppRes);
/* Free the parse tree */
talloc_free(pTree);
/* All done. */
return ret;
}
/* add a record */
static int
lsqlite3_add(struct ldb_module *module,
const struct ldb_message *msg)
{
long long eid;
struct lsqlite3_private * lsqlite3 = module->private_data;
/* ignore ltdb specials */
if (msg->dn[0] == '@') {
return 0;
}
/* Begin a transaction */
QUERY_NOROWS(lsqlite3, FALSE, "BEGIN EXCLUSIVE;");
/*
* Build any portions of the directory tree that don't exist. If the
* final component already exists, it's an error.
*/
if (new_dn(module, msg->dn, &eid) != 0) {
QUERY_NOROWS(lsqlite3, FALSE, "ROLLBACK;");
return -1;
}
/* Add attributes to this new entry */
if (msg_to_sql(module, msg, eid, FALSE) != 0) {
QUERY_NOROWS(lsqlite3, FALSE, "ROLLBACK;");
return -1;
}
/* Everything worked. Commit it! */
QUERY_NOROWS(lsqlite3, TRUE, "COMMIT;");
return 0;
}
/* modify a record */
static int
lsqlite3_modify(struct ldb_module * module,
const struct ldb_message * msg)
{
char * pDN;
long long eid;
struct lsqlite3_private * lsqlite3 = module->private_data;
/* ignore ltdb specials */
if (msg->dn[0] == '@') {
return 0;
}
/* Begin a transaction */
QUERY_NOROWS(lsqlite3, FALSE, "BEGIN EXCLUSIVE;");
/* Case-fold the DN so we can compare it to what's in the database */
pDN = ldb_dn_fold(module->ldb, msg->dn,
module, case_fold_attr_required);
/* Determine the eid of the DN being deleted */
QUERY_INT(lsqlite3,
eid,
TRUE,
"SELECT eid\n"
" FROM ldb_entry\n"
" WHERE dn = %Q;",
pDN);
/* Apply the message attributes */
if (msg_to_sql(module, msg, eid, TRUE) != 0) {
QUERY_NOROWS(lsqlite3, FALSE, "ROLLBACK;");
return -1;
}
/* Everything worked. Commit it! */
QUERY_NOROWS(lsqlite3, TRUE, "COMMIT;");
return 0 ;
}
/* obtain a named lock */
static int
lsqlite3_lock(struct ldb_module *module,
const char *lockname)
{
if (lockname == NULL) {
return -1;
}
/* TODO implement a local locking mechanism here */
return 0;
}
/* release a named lock */
static int
lsqlite3_unlock(struct ldb_module *module,
const char *lockname)
{
if (lockname == NULL) {
return -1;
}
/* TODO implement a local locking mechanism here */
return 0;
}
/* return extended error information */
static const char *
lsqlite3_errstring(struct ldb_module *module)
{
struct lsqlite3_private * lsqlite3 = module->private_data;
return sqlite3_errmsg(lsqlite3->sqlite);
}
/*
* Static functions
*/
static int
initialize(struct lsqlite3_private *lsqlite3,
const char *url)
{
int ret;
long long queryInt;
const char * pTail;
sqlite3_stmt * stmt;
const char * schema =
"CREATE TABLE ldb_info AS "
" SELECT 'LDB' AS database_type,"
" '1.0' AS version;"
/*
* The entry table holds the information about an entry.
* This table is used to obtain the EID of the entry and to
* support scope=one and scope=base. The parent and child
* table is included in the entry table since all the other
* attributes are dependent on EID.
*/
"CREATE TABLE ldb_entry "
"("
" eid INTEGER PRIMARY KEY,"
" peid INTEGER REFERENCES ldb_entry,"
" dn TEXT UNIQUE,"
" create_timestamp INTEGER,"
" modify_timestamp INTEGER"
");"
/*
* The purpose of the descendant table is to support the
* subtree search feature. For each LDB entry with a unique
* ID (AEID), this table contains the unique identifiers
* (DEID) of the descendant entries.
*
* For evern entry in the directory, a row exists in this
* table for each of its ancestors including itself. The
* size of the table depends on the depth of each entry. In
* the worst case, if all the entries were at the same
* depth, the number of rows in the table is O(nm) where
* n is the number of nodes in the directory and m is the
* depth of the tree.
*/
"CREATE TABLE ldb_descendants "
"( "
" aeid INTEGER REFERENCES ldb_entry,"
" deid INTEGER REFERENCES ldb_entry"
");"
"CREATE TABLE ldb_object_classes"
"("
" class_name TEXT PRIMARY KEY,"
" tree_key TEXT UNIQUE"
");"
/*
* We keep a full listing of attribute/value pairs here
*/
"CREATE TABLE ldb_attribute_values"
"("
" eid INTEGER REFERENCES ldb_entry,"
" attr_name TEXT,"
" attr_value TEXT"
");"
/*
* There is one attribute table per searchable attribute.
*/
/*
"CREATE TABLE ldb_attr_ATTRIBUTE_NAME"
"("
" eid INTEGER REFERENCES ldb_entry,"
" attr_value TEXT"
");"
*/
/*
* We pre-create the dn attribute table
*/
"CREATE TABLE ldb_attr_DN"
"("
" eid INTEGER REFERENCES ldb_entry,"
" attr_value TEXT"
");"
/*
* We pre-create the objectclass attribute table
*/
"CREATE TABLE ldb_attr_OBJECTCLASS"
"("
" eid INTEGER REFERENCES ldb_entry,"
" attr_value TEXT"
");"
/*
* Indexes
*/
/*
* Triggers
*/
"CREATE TRIGGER ldb_entry_insert_tr"
" AFTER INSERT"
" ON ldb_entry"
" FOR EACH ROW"
" BEGIN"
" UPDATE ldb_entry"
" SET create_timestamp = strftime('%s', 'now'),"
" modify_timestamp = strftime('%s', 'now')"
" WHERE eid = new.eid;"
" END;"
"CREATE TRIGGER ldb_entry_update_tr"
" AFTER UPDATE"
" ON ldb_entry"
" FOR EACH ROW"
" BEGIN"
" UPDATE ldb_entry"
" SET modify_timestamp = strftime('%s', 'now')"
" WHERE eid = old.eid;"
" END;"
/*
* Table initialization
*/
/* The root node */
"INSERT INTO ldb_entry "
" (eid, peid, dn) "
" VALUES "
" (0, NULL, '');"
/* And the root node "dn" attribute */
"INSERT INTO ldb_attr_DN "
" (eid, attr_value) "
" VALUES "
" (0, '');"
;
/* Skip protocol indicator of url */
if (strncmp(url, "sqlite://", 9) != 0) {
return SQLITE_MISUSE;
}
/* Update pointer to just after the protocol indicator */
url += 9;
/* Try to open the (possibly empty/non-existent) database */
if ((ret = sqlite3_open(url, &lsqlite3->sqlite)) != SQLITE_OK) {
return ret;
}
/* In case this is a new database, enable auto_vacuum */
QUERY_NOROWS(lsqlite3, FALSE, "PRAGMA auto_vacuum=1;");
/* Begin a transaction */
QUERY_NOROWS(lsqlite3, FALSE, "BEGIN EXCLUSIVE;");
/* Determine if this is a new database. No tables means it is. */
QUERY_INT(lsqlite3,
queryInt,
TRUE,
"SELECT COUNT(*)\n"
" FROM sqlite_master\n"
" WHERE type = 'table';");
if (queryInt == 0) {
/*
* Create the database schema
*/
for (pTail = discard_const_p(char, schema);
pTail != NULL && *pTail != '\0';
) {
if (lsqlite3_debug) {
printf("Execute first query in:\n%s\n", pTail);
}
if ((ret = sqlite3_prepare(
lsqlite3->sqlite,
pTail,
-1,
&stmt,
&pTail)) != SQLITE_OK ||
(ret = sqlite3_step(stmt)) != SQLITE_DONE ||
(ret = sqlite3_finalize(stmt)) != SQLITE_OK) {
QUERY_NOROWS(lsqlite3, FALSE, "ROLLBACK;");
(void) sqlite3_close(lsqlite3->sqlite);
return ret;
}
}
} else {
/*
* Ensure that the database we opened is one of ours
*/
if (query_int(lsqlite3,
&queryInt,
"SELECT "
" (SELECT COUNT(*) = 3"
" FROM sqlite_master "
" WHERE type = 'table' "
" AND name IN "
" ("
" 'ldb_entry', "
" 'ldb_descendants', "
" 'ldb_object_classes' "
" ) "
" ) "
" AND "
" (SELECT 1 "
" FROM ldb_info "
" WHERE database_type = 'LDB' "
" AND version = '1.0'"
" );") != 0 ||
queryInt != 1) {
/* It's not one that we created. See ya! */
QUERY_NOROWS(lsqlite3, FALSE, "ROLLBACK;");
(void) sqlite3_close(lsqlite3->sqlite);
return SQLITE_MISUSE;
}
}
/*
* Create a temporary table to hold attributes requested in the result
* set of a search.
*/
QUERY_NOROWS(lsqlite3,
FALSE,
"CREATE TEMPORARY TABLE " RESULT_ATTR_TABLE "\n"
" (\n"
" attr_name TEXT PRIMARY KEY\n"
" );");
/*
* Create a temporary table to hold the attributes used by filters
* during a search.
*/
QUERY_NOROWS(lsqlite3,
FALSE,
"CREATE TEMPORARY TABLE " FILTER_ATTR_TABLE "\n"
" (\n"
" attr_name TEXT PRIMARY KEY\n"
" );");
/* Commit the transaction */
QUERY_NOROWS(lsqlite3, FALSE, "COMMIT;");
return SQLITE_OK;
}
static int
destructor(void *p)
{
struct lsqlite3_private * lsqlite3 = p;
(void) sqlite3_close(lsqlite3->sqlite);
return 0;
}
/*
* query_norows()
*
* This function is used for queries that are not expected to return any rows,
* e.g. BEGIN, COMMIT, ROLLBACK, CREATE TABLE, INSERT, UPDATE, DELETE, etc.
* There are no provisions here for returning data from rows in a table, so do
* not pass SELECT queries to this function.
*/
static int
query_norows(const struct lsqlite3_private *lsqlite3,
const char *pSql,
...)
{
int ret;
int bLoop;
char * p;
sqlite3_stmt * pStmt;
va_list args;
/* Begin access to variable argument list */
va_start(args, pSql);
/* Format the query */
if ((p = sqlite3_vmprintf(pSql, args)) == NULL) {
return -1;
}
if (lsqlite3_debug) {
printf("%s\n", p);
}
/*
* Prepare and execute the SQL statement. Loop allows retrying on
* certain errors, e.g. SQLITE_SCHEMA occurs if the schema changes,
* requiring retrying the operation.
*/
for (bLoop = TRUE; bLoop; ) {
/* Compile the SQL statement into sqlite virtual machine */
if ((ret = sqlite3_prepare(lsqlite3->sqlite,
p,
-1,
&pStmt,
NULL)) == SQLITE_SCHEMA) {
continue;
} else if (ret != SQLITE_OK) {
ret = -1;
break;
}
/* No rows expected, so just step through machine code once */
if ((ret = sqlite3_step(pStmt)) == SQLITE_SCHEMA) {
(void) sqlite3_finalize(pStmt);
continue;
} else if (ret != SQLITE_DONE) {
(void) sqlite3_finalize(pStmt);
ret = -1;
break;
}
/* Free the virtual machine */
if ((ret = sqlite3_finalize(pStmt)) == SQLITE_SCHEMA) {
(void) sqlite3_finalize(pStmt);
continue;
} else if (ret != SQLITE_OK) {
(void) sqlite3_finalize(pStmt);
ret = -1;
break;
}
/*
* Normal condition is only one time through loop. Loop is
* rerun in error conditions, via "continue", above.
*/
ret = 0;
bLoop = FALSE;
}
/* All done with variable argument list */
va_end(args);
/* Free the memory we allocated for our query string */
sqlite3_free(p);
return ret;
}
/*
* query_int()
*
* This function is used for the common case of queries that return a single
* integer value.
*
* NOTE: If more than one value is returned by the query, all but the first
* one will be ignored.
*/
static int
query_int(const struct lsqlite3_private * lsqlite3,
long long * pRet,
const char * pSql,
...)
{
int ret;
int bLoop;
char * p;
sqlite3_stmt * pStmt;
va_list args;
/* Begin access to variable argument list */
va_start(args, pSql);
/* Format the query */
if ((p = sqlite3_vmprintf(pSql, args)) == NULL) {
return SQLITE_NOMEM;
}
if (lsqlite3_debug) {
printf("%s\n", p);
}
/*
* Prepare and execute the SQL statement. Loop allows retrying on
* certain errors, e.g. SQLITE_SCHEMA occurs if the schema changes,
* requiring retrying the operation.
*/
for (bLoop = TRUE; bLoop; ) {
/* Compile the SQL statement into sqlite virtual machine */
if ((ret = sqlite3_prepare(lsqlite3->sqlite,
p,
-1,
&pStmt,
NULL)) == SQLITE_SCHEMA) {
continue;
} else if (ret != SQLITE_OK) {
break;
}
/* One row expected */
if ((ret = sqlite3_step(pStmt)) == SQLITE_SCHEMA) {
(void) sqlite3_finalize(pStmt);
continue;
} else if (ret != SQLITE_ROW) {
(void) sqlite3_finalize(pStmt);
break;
}
/* Get the value to be returned */
*pRet = sqlite3_column_int64(pStmt, 0);
/* Free the virtual machine */
if ((ret = sqlite3_finalize(pStmt)) == SQLITE_SCHEMA) {
(void) sqlite3_finalize(pStmt);
continue;
} else if (ret != SQLITE_OK) {
(void) sqlite3_finalize(pStmt);
break;
}
/*
* Normal condition is only one time through loop. Loop is
* rerun in error conditions, via "continue", above.
*/
bLoop = FALSE;
}
/* All done with variable argument list */
va_end(args);
/* Free the memory we allocated for our query string */
sqlite3_free(p);
return ret;
}
/*
callback function used in call to ldb_dn_fold() for determining whether an
attribute type requires case folding.
*/
static int
case_fold_attr_required(void * hUserData,
char *attr)
{
// struct ldb_module * module = hUserData;
#warning "currently, all attributes require case folding"
return TRUE;
}
/*
* add a single set of ldap message values to a ldb_message
*/
static int
add_msg_attr(void * hTalloc,
long long eid,
const char * pDN,
const char * pAttrName,
const char * pAttrValue,
long long prevEID,
int * pAllocated,
struct ldb_message *** pppRes)
{
void * x;
struct ldb_message * msg;
struct ldb_message_element * el;
/* Is this a different EID than the previous one? */
if (eid != prevEID) {
/* Yup. Add another result to the result array */
if ((x = talloc_realloc(hTalloc,
*pAllocated == 0 ? NULL : pppRes,
struct ldb_message *,
*pAllocated + 1)) == NULL) {
return -1;
}
/* Save the new result list */
*pppRes = x;
/* We've allocated one more result */
*pAllocated++;
/* Ensure that the message is initialized */
msg = x;
msg->dn = NULL;
msg->num_elements = 0;
msg->elements = NULL;
msg->private_data = NULL;
} else {
/* Same EID. Point to the previous most-recent message */
msg = *pppRes[*pAllocated - 1];
}
/*
* Point to the most recent previous element. (If there are none,
* this will point to non-allocated memory, but the pointer will never
* be dereferenced.)
*/
el = &msg->elements[msg->num_elements - 1];
/* See if the most recent previous element has the same attr_name */
if (msg->num_elements == 0 || strcmp(el->name, pAttrName) != 0) {
/* It's a new attr_name. Allocate another message element */
if ((el = talloc_realloc(msg,
msg->elements,
struct ldb_message_element,
msg->num_elements + 1)) == NULL) {
return -1;
}
/* Save the new element */
msg->elements = el;
/* There's now one additional element */
msg->num_elements++;
/* Save the attribute name */
if ((el->name =
talloc_strdup(msg->elements, pAttrName)) == NULL) {
return -1;
}
/* No flags */
el->flags = 0;
/* Initialize number of attribute values for this type */
el->num_values = 0;
el->values = NULL;
}
/* Increase the value array size by 1 */
if ((el->values =
talloc_realloc(el,
el->num_values == 0 ? NULL : el->values,
struct ldb_val,
el->num_values)) == NULL) {
return -1;
}
/* Save the new attribute value length */
el->values[el->num_values].length = strlen(pAttrValue) + 1;
/* Copy the new attribute value */
if (talloc_memdup(el->values[el->num_values].data,
pAttrValue,
el->values[el->num_values].length) == NULL) {
return -1;
}
/* We now have one additional value of this type */
el->num_values++;
return 0;
}
static char *
parsetree_to_sql(struct ldb_module *module,
char * hTalloc,
const struct ldb_parse_tree *t)
{
int i;
char * child;
char * p;
char * ret = NULL;
char * pAttrName;
switch(t->operation) {
case LDB_OP_SIMPLE:
break;
case LDB_OP_EXTENDED:
#warning "work out how to handle bitops"
return NULL;
case LDB_OP_AND:
ret = parsetree_to_sql(module,
hTalloc,
t->u.list.elements[0]);
for (i = 1; i < t->u.list.num_elements; i++) {
child =
parsetree_to_sql(
module,
hTalloc,
t->u.list.elements[i]);
ret = talloc_asprintf_append(ret,
"INTERSECT\n"
"%s\n",
child);
talloc_free(child);
}
child = ret;
ret = talloc_asprintf(hTalloc,
"(\n"
"%s\n"
")\n",
child);
talloc_free(child);
return ret;
case LDB_OP_OR:
child =
parsetree_to_sql(
module,
hTalloc,
t->u.list.elements[0]);
for (i = 1; i < t->u.list.num_elements; i++) {
child =
parsetree_to_sql(
module,
hTalloc,
t->u.list.elements[i]);
ret = talloc_asprintf_append(ret,
"UNION\n"
"%s\n",
child);
talloc_free(child);
}
child = ret;
ret = talloc_asprintf(hTalloc,
"(\n"
"%s\n"
")\n",
child);
talloc_free(child);
return ret;
case LDB_OP_NOT:
child =
parsetree_to_sql(
module,
hTalloc,
t->u.not.child);
ret = talloc_asprintf(hTalloc,
"(\n"
" SELECT eid\n"
" FROM ldb_entry\n"
" WHERE eid NOT IN %s\n"
")\n",
child);
talloc_free(child);
return ret;
default:
/* should never occur */
abort();
};
/* Get a case-folded copy of the attribute name */
pAttrName = ldb_casefold((struct ldb_context *) module,
t->u.simple.attr);
/*
* For simple searches, we want to retrieve the list of EIDs that
* match the criteria. We accomplish this by searching the
* appropriate table, ldb_attr_<attributeName>, for the eid
* corresponding to all matching values.
*/
if (t->u.simple.value.length == 1 &&
(*(const char *) t->u.simple.value.data) == '*') {
/*
* Special case for "attr_name=*". In this case, we want the
* eid corresponding to all values in the specified attribute
* table.
*/
if ((p = sqlite3_mprintf("(\n"
" SELECT eid\n"
" FROM ldb_attr_%q\n"
")\n",
pAttrName)) == NULL) {
return NULL;
}
if (lsqlite3_debug) {
printf("%s\n", p);
}
ret = talloc_strdup(hTalloc, p);
sqlite3_free(p);
} else if (strcasecmp(t->u.simple.attr, "objectclass") == 0) {
/*
* For object classes, we want to search for all objectclasses
* that are subclasses as well.
*/
if ((p = sqlite3_mprintf(
"(\n"
" SELECT eid\n"
" FROM ldb_attr_OBJECTCLASS\n"
" WHERE attr_name IN\n"
" (SELECT class_name\n"
" FROM ldb_objectclasses\n"
" WHERE tree_key GLOB\n"
" (SELECT tree_key\n"
" FROM ldb_objectclasses\n"
" WHERE class_name = %Q) || '*')\n"
")\n",
t->u.simple.value.data)) == NULL) {
return NULL;
}
if (lsqlite3_debug) {
printf("%s\n", p);
}
ret = talloc_strdup(hTalloc, p);
sqlite3_free(p);
} else {
/* A normal query. */
if ((p = sqlite3_mprintf("(\n"
" SELECT eid\n"
" FROM ldb_attr_%q\n"
" WHERE attr_value = %Q\n"
")\n",
pAttrName,
t->u.simple.value.data)) == NULL) {
return NULL;
}
if (lsqlite3_debug) {
printf("%s\n", p);
}
ret = talloc_strdup(hTalloc, p);
sqlite3_free(p);
}
return ret;
}
static int
parsetree_to_attrlist(struct lsqlite3_private * lsqlite3,
const struct ldb_parse_tree * t)
{
int i;
switch(t->operation) {
case LDB_OP_SIMPLE:
break;
case LDB_OP_EXTENDED:
#warning "work out how to handle bitops"
return -1;
case LDB_OP_AND:
if (parsetree_to_attrlist(
lsqlite3,
t->u.list.elements[0]) != 0) {
return -1;
}
for (i = 1; i < t->u.list.num_elements; i++) {
if (parsetree_to_attrlist(
lsqlite3,
t->u.list.elements[i]) != 0) {
return -1;
}
}
return 0;
case LDB_OP_OR:
if (parsetree_to_attrlist(
lsqlite3,
t->u.list.elements[0]) != 0) {
return -1;
}
for (i = 1; i < t->u.list.num_elements; i++) {
if (parsetree_to_attrlist(
lsqlite3,
t->u.list.elements[i]) != 0) {
return -1;
}
}
return 0;
case LDB_OP_NOT:
if (parsetree_to_attrlist(lsqlite3,
t->u.not.child) != 0) {
return -1;
}
return 0;
default:
/* should never occur */
abort();
};
QUERY_NOROWS(lsqlite3,
FALSE,
"INSERT OR IGNORE INTO " FILTER_ATTR_TABLE "\n"
" (attr_name)\n"
" VALUES\n"
" (%Q);",
t->u.simple.attr);
return 0;
}
#ifdef NEED_TABLE_LIST
/*
* Use the already-generated FILTER_ATTR_TABLE to create a list of attribute
* table names that will be used in search queries.
*/
static char *
build_attr_table_list(void * hTalloc,
struct lsqlite3_private * lsqlite3)
{
int ret;
int bLoop;
char * p;
char * pAttrName;
char * pTableList;
sqlite3_stmt * pStmt;
/*
* Prepare and execute the SQL statement. Loop allows retrying on
* certain errors, e.g. SQLITE_SCHEMA occurs if the schema changes,
* requiring retrying the operation.
*/
for (bLoop = TRUE; bLoop; ) {
/* Initialize a string to which we'll append each table name */
if ((pTableList = talloc_strdup(hTalloc, "")) == NULL) {
return NULL;
}
/* Compile the SQL statement into sqlite virtual machine */
if ((ret = sqlite3_prepare(lsqlite3->sqlite,
"SELECT attr_name "
" FROM " FILTER_ATTR_TABLE ";",
-1,
&pStmt,
NULL)) == SQLITE_SCHEMA) {
continue;
} else if (ret != SQLITE_OK) {
ret = -1;
break;
}
/* Loop through the returned rows */
for (ret = SQLITE_ROW; ret == SQLITE_ROW; ) {
/* Get the next row */
if ((ret = sqlite3_step(pStmt)) == SQLITE_ROW) {
/*
* Get value from this row and append to table
* list
*/
p = discard_const_p(char,
sqlite3_column_text(pStmt,
0));
pAttrName =
ldb_casefold(
hTalloc,
sqlite3_column_text(pStmt, 0));
/* Append it to the table list */
if ((p = talloc_asprintf(
hTalloc,
"%sldb_attr_%s",
*pTableList == '\0' ? "" : ",",
pAttrName)) == NULL) {
talloc_free(pTableList);
return NULL;
}
/* We have a new table list */
talloc_free(pTableList);
pTableList = p;
}
}
if (ret == SQLITE_SCHEMA) {
talloc_free(pTableList);
continue;
}
/* Free the virtual machine */
if ((ret = sqlite3_finalize(pStmt)) == SQLITE_SCHEMA) {
(void) sqlite3_finalize(pStmt);
continue;
} else if (ret != SQLITE_OK) {
(void) sqlite3_finalize(pStmt);
ret = -1;
break;
}
/*
* Normal condition is only one time through loop. Loop is
* rerun in error conditions, via "continue", above.
*/
ret = 0;
bLoop = FALSE;
}
if (ret != 0) {
talloc_free(pTableList);
pTableList = NULL;
}
return pTableList;
}
#endif
/*
* Issue a series of SQL statements to implement the ADD/MODIFY/DELETE
* requests in the ldb_message
*/
static int
msg_to_sql(struct ldb_module * module,
const struct ldb_message * msg,
long long eid,
int use_flags)
{
int flags;
char * pAttrName;
unsigned int i;
unsigned int j;
struct lsqlite3_private * lsqlite3 = module->private_data;
for (i = 0; i < msg->num_elements; i++) {
const struct ldb_message_element *el = &msg->elements[i];
if (! use_flags) {
flags = LDB_FLAG_MOD_ADD;
} else {
flags = el->flags & LDB_FLAG_MOD_MASK;
}
/* Get a case-folded copy of the attribute name */
pAttrName = ldb_casefold((struct ldb_context *) module,
el->name);
if (flags == LDB_FLAG_MOD_ADD) {
/* Create the attribute table if it doesn't exist */
if (new_attr(module, pAttrName) != 0) {
return -1;
}
}
/* For each value of the specified attribute name... */
for (j = 0; j < el->num_values; j++) {
/* ... bind the attribute value, if necessary */
switch (flags) {
case LDB_FLAG_MOD_ADD:
QUERY_NOROWS(lsqlite3,
FALSE,
"INSERT INTO ldb_attr_%q\n"
" (eid, attr_value)\n"
" VALUES\n"
" (%lld, %Q);",
pAttrName,
eid, el->values[j].data);
QUERY_NOROWS(lsqlite3,
FALSE,
"INSERT INTO ldb_attribute_values"
" (eid, attr_name, attr_value)"
" VALUES "
" (%lld, %Q, %Q);",
eid,
el->name,
el->values[j].data);
break;
case LDB_FLAG_MOD_REPLACE:
QUERY_NOROWS(lsqlite3,
FALSE,
"UPDATE ldb_attr_%q\n"
" SET attr_value = %Q\n"
" WHERE eid = %lld;",
pAttrName,
el->values[j].data,
eid);
QUERY_NOROWS(lsqlite3,
FALSE,
"UPDATE ldb_attribute_values "
" SET attr_value = %Q "
" WHERE eid = %lld "
" AND attr_name = %Q;",
el->values[j].data,
eid,
el->name);
break;
case LDB_FLAG_MOD_DELETE:
/* No additional parameters to this query */
QUERY_NOROWS(lsqlite3,
FALSE,
"DELETE FROM ldb_attr_%q\n"
" WHERE eid = %lld\n"
" AND attr_value = %Q;",
pAttrName,
eid,
el->values[j].data);
QUERY_NOROWS(lsqlite3,
FALSE,
"DELETE FROM ldb_attribute_values"
" WHERE eid = %lld "
" AND attr_name = %Q "
" AND attr_value = %Q;",
eid,
el->name,
el->values[j].data);
break;
}
}
}
return 0;
}
static int
new_dn(struct ldb_module * module,
char * pDN,
long long * pEID)
{
int nComponent;
int bFirst;
char * p;
char * pPartialDN;
long long eid;
long long peid;
struct ldb_dn * pExplodedDN;
struct ldb_dn_component * pComponent;
struct ldb_context * ldb = module->ldb;
struct lsqlite3_private * lsqlite3 = module->private_data;
/* Explode and normalize the DN */
if ((pExplodedDN =
ldb_explode_dn(ldb,
pDN,
ldb,
case_fold_attr_required)) == NULL) {
return -1;
}
/* Allocate a string to hold the partial DN of each component */
if ((pPartialDN = talloc_strdup(ldb, "")) == NULL) {
return -1;
}
/* For each component of the DN (starting with the last one)... */
eid = 0;
for (nComponent = pExplodedDN->comp_num - 1, bFirst = TRUE;
nComponent >= 0;
nComponent--, bFirst = FALSE) {
/* Point to the component */
pComponent = pExplodedDN->components[nComponent];
/* Add this component on to the partial DN to date */
if ((p = talloc_asprintf(ldb,
"%s%s%s",
pComponent->component,
bFirst ? "" : ",",
pPartialDN)) == NULL) {
return -1;
}
/* No need for the old partial DN any more */
talloc_free(pPartialDN);
/* Save the new partial DN */
pPartialDN = p;
/*
* Ensure that an entry is in the ldb_entry table for this
* component. Any component other than the last one
* (component 0) may already exist. It is an error if
* component 0 (the full DN requested to be be inserted)
* already exists.
*/
QUERY_NOROWS(lsqlite3,
FALSE,
"INSERT %s INTO ldb_entry\n"
" (peid, dn)\n"
" VALUES\n"
" (%lld, %Q);",
nComponent == 0 ? "" : "OR IGNORE",
eid, pPartialDN);
/* Save the parent EID */
peid = eid;
/* Get the EID of the just inserted row */
eid = sqlite3_last_insert_rowid(lsqlite3->sqlite);
/*
* Popoulate the descendant table
*/
/* This table has an entry for itself as well as descendants */
QUERY_NOROWS(lsqlite3,
FALSE,
"INSERT INTO ldb_descendants "
" (aeid, deid) "
" VALUES "
" (%lld, %lld);",
eid, eid);
/* Now insert rows for all of our ancestors */
QUERY_NOROWS(lsqlite3,
FALSE,
"INSERT INTO ldb_descendants "
" (aeid, deid) "
" SELECT aeid, %lld "
" FROM ldb_descendants "
" WHERE aeid = %lld;",
eid, peid);
/* If this is the final component, also add DN attribute */
if (nComponent == 0) {
QUERY_NOROWS(lsqlite3,
FALSE,
"INSERT %s INTO ldb_attr_DN\n"
" (eid, attr_value) "
" VALUES "
" (%lld, %Q);",
nComponent == 0 ? "" : "OR IGNORE",
eid, pPartialDN);
}
}
/* Give 'em what they came for! */
*pEID = eid;
return 0;
}
static int
new_attr(struct ldb_module * module,
char * pAttrName)
{
long long bExists;
struct lsqlite3_private * lsqlite3 = module->private_data;
/*
* NOTE:
* pAttrName is assumed to already be case-folded here!
*/
/* See if the table already exists */
QUERY_INT(lsqlite3,
bExists,
FALSE,
"SELECT COUNT(*) <> 0\n"
" FROM sqlite_master\n"
" WHERE type = 'table'\n"
" AND tbl_name = 'ldb_attr_%q';",
pAttrName);
/* Did it exist? */
if (! bExists) {
/* Nope. Create the table */
QUERY_NOROWS(lsqlite3,
FALSE,
"CREATE TABLE ldb_attr_%q\n"
"(\n"
" eid INTEGER REFERENCES ldb_entry,\n"
" attr_value TEXT\n"
");",
pAttrName);
}
return 0;
}
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