ldb database library
Copyright (C) Derrell Lipman 2005
+ Copyright (C) Simo Sorce 2005-2006
** NOTE! The following LGPL license applies to the ldb
** library. This does NOT imply that all of Samba is released
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.
+ version 3 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
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
+ License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
/*
* 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"
+#include "ldb_includes.h"
+
+#include <sqlite3.h>
+
+struct lsqlite3_private {
+ int trans_count;
+ char **options;
+ sqlite3 *sqlite;
+};
+
+struct lsql_context {
+ struct ldb_module *module;
+ struct ldb_request *req;
+
+ /* search stuff */
+ long long current_eid;
+ const char * const * attrs;
+ struct ldb_reply *ares;
+};
/*
* Macros used throughout
# define TRUE (! FALSE)
#endif
-#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)
+#define RESULT_ATTR_TABLE "temp_result_attrs"
+//#define TEMPTAB /* for testing, create non-temporary table */
+#define TEMPTAB "TEMPORARY"
/*
- * Forward declarations
+ * Static variables
*/
-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);
+sqlite3_stmt * stmtGetEID = NULL;
-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 *** res);
+static char *lsqlite3_tprintf(TALLOC_CTX *mem_ctx, const char *fmt, ...)
+{
+ char *str, *ret;
+ va_list ap;
-static int
-lsqlite3_add(struct ldb_module *module,
- const struct ldb_message *msg);
+ va_start(ap, fmt);
+ str = sqlite3_vmprintf(fmt, ap);
+ va_end(ap);
-static int
-lsqlite3_modify(struct ldb_module *module,
- const struct ldb_message *msg);
+ if (str == NULL) return NULL;
-static int
-lsqlite3_lock(struct ldb_module *module,
- const char *lockname);
+ ret = talloc_strdup(mem_ctx, str);
+ if (ret == NULL) {
+ sqlite3_free(str);
+ return NULL;
+ }
-static int
-lsqlite3_unlock(struct ldb_module *module,
- const char *lockname);
+ sqlite3_free(str);
+ return ret;
+}
-static const char *
-lsqlite3_errstring(struct ldb_module *module);
+static char base160tab[161] = {
+ 48 ,49 ,50 ,51 ,52 ,53 ,54 ,55 ,56 ,57 , /* 0-9 */
+ 58 ,59 ,65 ,66 ,67 ,68 ,69 ,70 ,71 ,72 , /* : ; A-H */
+ 73 ,74 ,75 ,76 ,77 ,78 ,79 ,80 ,81 ,82 , /* I-R */
+ 83 ,84 ,85 ,86 ,87 ,88 ,89 ,90 ,97 ,98 , /* S-Z , a-b */
+ 99 ,100,101,102,103,104,105,106,107,108, /* c-l */
+ 109,110,111,112,113,114,115,116,117,118, /* m-v */
+ 119,120,121,122,160,161,162,163,164,165, /* w-z, latin1 */
+ 166,167,168,169,170,171,172,173,174,175, /* latin1 */
+ 176,177,178,179,180,181,182,183,184,185, /* latin1 */
+ 186,187,188,189,190,191,192,193,194,195, /* latin1 */
+ 196,197,198,199,200,201,202,203,204,205, /* latin1 */
+ 206,207,208,209,210,211,212,213,214,215, /* latin1 */
+ 216,217,218,219,220,221,222,223,224,225, /* latin1 */
+ 226,227,228,229,230,231,232,233,234,235, /* latin1 */
+ 236,237,238,239,240,241,242,243,244,245, /* latin1 */
+ 246,247,248,249,250,251,252,253,254,255, /* latin1 */
+ '\0'
+};
-static int
-initialize(struct lsqlite3_private *lsqlite3,
- const char *url);
-static int
-destructor(void *p);
+/*
+ * base160()
+ *
+ * Convert an unsigned long integer into a base160 representation of the
+ * number.
+ *
+ * Parameters:
+ * val --
+ * value to be converted
+ *
+ * result --
+ * character array, 5 bytes long, into which the base160 representation
+ * will be placed. The result will be a four-digit representation of the
+ * number (with leading zeros prepended as necessary), and null
+ * terminated.
+ *
+ * Returns:
+ * Nothing
+ */
+static void
+base160_sql(sqlite3_context * hContext,
+ int argc,
+ sqlite3_value ** argv)
+{
+ int i;
+ long long val;
+ char result[5];
-static int
-query_norows(const struct lsqlite3_private *lsqlite3,
- const char *pSql,
- ...);
+ val = sqlite3_value_int64(argv[0]);
-static int
-query_int(const struct lsqlite3_private * lsqlite3,
- long long * pRet,
- const char * pSql,
- ...);
+ for (i = 3; i >= 0; i--) {
+
+ result[i] = base160tab[val % 160];
+ val /= 160;
+ }
-static int case_fold_attr_required(void * hUserData,
- char *attr);
+ result[4] = '\0';
-static char *
-parsetree_to_sql(struct ldb_module *module,
- char * hTalloc,
- const struct ldb_parse_tree *t);
+ sqlite3_result_text(hContext, result, -1, SQLITE_TRANSIENT);
+}
-static char *
-parsetree_to_tablelist(struct ldb_module *module,
- char * hTalloc,
- const struct ldb_parse_tree *t);
-static int
-msg_to_sql(struct ldb_module * module,
- const struct ldb_message * msg,
- long long eid,
- int use_flags);
+/*
+ * base160next_sql()
+ *
+ * This function enhances sqlite by adding a "base160_next()" function which is
+ * accessible via queries.
+ *
+ * Retrieve the next-greater number in the base160 sequence for the terminal
+ * tree node (the last four digits). Only one tree level (four digits) is
+ * operated on.
+ *
+ * Input:
+ * A character string: either an empty string (in which case no operation is
+ * performed), or a string of base160 digits with a length of a multiple of
+ * four digits.
+ *
+ * Output:
+ * Upon return, the trailing four digits (one tree level) will have been
+ * incremented by 1.
+ */
+static void
+base160next_sql(sqlite3_context * hContext,
+ int argc,
+ sqlite3_value ** argv)
+{
+ int i;
+ int len;
+ char * pTab;
+ char * pBase160 = strdup((const char *)sqlite3_value_text(argv[0]));
+ char * pStart = pBase160;
-static int
-new_dn(struct ldb_module * module,
- char * pDN,
- long long * pEID);
+ /*
+ * We need a minimum of four digits, and we will always get a multiple
+ * of four digits.
+ */
+ if (pBase160 != NULL &&
+ (len = strlen(pBase160)) >= 4 &&
+ len % 4 == 0) {
-static int
-new_attr(struct ldb_module * module,
- char * pAttrName);
+ if (pBase160 == NULL) {
+ sqlite3_result_null(hContext);
+ return;
+ }
-/*
- * 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
-};
+ pBase160 += strlen(pBase160) - 1;
+ /* We only carry through four digits: one level in the tree */
+ for (i = 0; i < 4; i++) {
+ /* What base160 value does this digit have? */
+ pTab = strchr(base160tab, *pBase160);
+ /* Is there a carry? */
+ if (pTab < base160tab + sizeof(base160tab) - 1) {
-/*
- * Public functions
- */
+ /*
+ * Nope. Just increment this value and we're
+ * done.
+ */
+ *pBase160 = *++pTab;
+ break;
+ } else {
+
+ /*
+ * There's a carry. This value gets
+ * base160tab[0], we decrement the buffer
+ * pointer to get the next higher-order digit,
+ * and continue in the loop.
+ */
+ *pBase160-- = base160tab[0];
+ }
+ }
+ sqlite3_result_text(hContext,
+ pStart,
+ strlen(pStart),
+ free);
+ } else {
+ sqlite3_result_value(hContext, argv[0]);
+ if (pBase160 != NULL) {
+ free(pBase160);
+ }
+ }
+}
-/*
- * connect to the database
- */
-struct ldb_context *
-lsqlite3_connect(const char *url,
- unsigned int flags,
- const char *options[])
+static char *parsetree_to_sql(struct ldb_module *module,
+ void *mem_ctx,
+ const struct ldb_parse_tree *t)
{
- int i;
- int ret;
- struct ldb_context * ldb = NULL;
- struct lsqlite3_private * lsqlite3 = NULL;
+ const struct ldb_schema_attribute *a;
+ struct ldb_val value, subval;
+ char *wild_card_string;
+ char *child, *tmp;
+ char *ret = NULL;
+ char *attr;
+ int i;
- ldb = talloc(NULL, struct ldb_context);
- if (!ldb) {
- errno = ENOMEM;
- goto failed;
- }
- lsqlite3 = talloc(ldb, struct lsqlite3_private);
- if (!lsqlite3) {
- errno = ENOMEM;
- goto failed;
- }
+ switch(t->operation) {
+ case LDB_OP_AND:
- lsqlite3->sqlite = NULL;
- lsqlite3->options = NULL;
- lsqlite3->lock_count = 0;
+ tmp = parsetree_to_sql(module, mem_ctx, t->u.list.elements[0]);
+ if (tmp == NULL) return NULL;
- ret = initialize(lsqlite3, url);
- if (ret != SQLITE_OK) {
- goto failed;
- }
+ for (i = 1; i < t->u.list.num_elements; i++) {
- talloc_set_destructor(lsqlite3, destructor);
+ child = parsetree_to_sql(module, mem_ctx, t->u.list.elements[i]);
+ if (child == NULL) return NULL;
- ldb->modules = talloc(ldb, struct ldb_module);
- if (!ldb->modules) {
- errno = ENOMEM;
- goto failed;
- }
- ldb->modules->ldb = ldb;
- ldb->modules->prev = ldb->modules->next = NULL;
- ldb->modules->private_data = lsqlite3;
- ldb->modules->ops = &lsqlite3_ops;
+ tmp = talloc_asprintf_append(tmp, " INTERSECT %s ", child);
+ if (tmp == NULL) return NULL;
+ }
- 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++) ;
+ ret = talloc_asprintf(mem_ctx, "SELECT * FROM ( %s )\n", tmp);
- lsqlite3->options = talloc_array(lsqlite3, char *, i+1);
- if (!lsqlite3->options) {
- goto failed;
+ return ret;
+
+ case LDB_OP_OR:
+
+ tmp = parsetree_to_sql(module, mem_ctx, t->u.list.elements[0]);
+ if (tmp == NULL) return NULL;
+
+ for (i = 1; i < t->u.list.num_elements; i++) {
+
+ child = parsetree_to_sql(module, mem_ctx, t->u.list.elements[i]);
+ if (child == NULL) return NULL;
+
+ tmp = talloc_asprintf_append(tmp, " UNION %s ", child);
+ if (tmp == NULL) return NULL;
}
-
- 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 talloc_asprintf(mem_ctx, "SELECT * FROM ( %s ) ", tmp);
+
+ case LDB_OP_NOT:
+
+ child = parsetree_to_sql(module, mem_ctx, t->u.isnot.child);
+ if (child == NULL) return NULL;
+
+ return talloc_asprintf(mem_ctx,
+ "SELECT eid FROM ldb_entry "
+ "WHERE eid NOT IN ( %s ) ", child);
+
+ case LDB_OP_EQUALITY:
+ /*
+ * For simple searches, we want to retrieve the list of EIDs that
+ * match the criteria.
+ */
+ attr = ldb_attr_casefold(mem_ctx, t->u.equality.attr);
+ if (attr == NULL) return NULL;
+ a = ldb_schema_attribute_by_name(module->ldb, attr);
+
+ /* Get a canonicalised copy of the data */
+ a->syntax->canonicalise_fn(module->ldb, mem_ctx, &(t->u.equality.value), &value);
+ if (value.data == NULL) {
+ return NULL;
}
- }
- return ldb;
+ if (strcasecmp(t->u.equality.attr, "dn") == 0) {
+ /* DN query is a special ldb case */
+ const char *cdn = ldb_dn_get_casefold(
+ ldb_dn_new(mem_ctx, module->ldb,
+ (const char *)value.data));
+
+ return lsqlite3_tprintf(mem_ctx,
+ "SELECT eid FROM ldb_entry "
+ "WHERE norm_dn = '%q'", cdn);
+
+ } else {
+ /* A normal query. */
+ return lsqlite3_tprintf(mem_ctx,
+ "SELECT eid FROM ldb_attribute_values "
+ "WHERE norm_attr_name = '%q' "
+ "AND norm_attr_value = '%q'",
+ attr,
+ value.data);
-failed:
- if (lsqlite3->sqlite != NULL) {
- (void) sqlite3_close(lsqlite3->sqlite);
- }
- talloc_free(ldb);
- return NULL;
-}
+ }
+ case LDB_OP_SUBSTRING:
-/*
- * Interface functions referenced by lsqlite3_ops
- */
+ wild_card_string = talloc_strdup(mem_ctx,
+ (t->u.substring.start_with_wildcard)?"*":"");
+ if (wild_card_string == NULL) return NULL;
-/* rename a record */
-static int
-lsqlite3_rename(struct ldb_module * module,
- const char * olddn,
- const char * newdn)
-{
- /* ignore ltdb specials */
- if (olddn[0] == '@' ||newdn[0] == '@') {
- return 0;
- }
+ for (i = 0; t->u.substring.chunks[i]; i++) {
+ wild_card_string = talloc_asprintf_append(wild_card_string, "%s*",
+ t->u.substring.chunks[i]->data);
+ if (wild_card_string == NULL) return NULL;
+ }
-#warning "lsqlite3_rename() is not yet supported"
- return -1;
-}
+ if ( ! t->u.substring.end_with_wildcard ) {
+ /* remove last wildcard */
+ wild_card_string[strlen(wild_card_string) - 1] = '\0';
+ }
-/* delete a record */
-static int
-lsqlite3_delete(struct ldb_module *module,
- const char *dn)
-{
- /* ignore ltdb specials */
- if (dn[0] == '@') {
- return 0;
- }
-
-#warning "lsqlite3_delete() is not yet supported"
- return -1;
-}
+ attr = ldb_attr_casefold(mem_ctx, t->u.substring.attr);
+ if (attr == NULL) return NULL;
+ a = ldb_schema_attribute_by_name(module->ldb, attr);
-/* search for matching records */
-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 *** res)
-{
- int ret;
- int bLoop;
- long long eid = 0;
- long long prevEID;
- char * pSql = NULL;
- char * pSqlConstraints;
- char * pTableList;
- char * hTalloc;
- const char * pDN;
- const char * pAttrName;
- const char * pAttrValue;
- sqlite3_stmt * pStmt;
- struct ldb_parse_tree * pTree;
- struct lsqlite3_private * lsqlite3 = module->private_data;
-
- if (pBaseDN == NULL) {
- pBaseDN = "";
- }
+ subval.data = (void *)wild_card_string;
+ subval.length = strlen(wild_card_string) + 1;
- /* Begin a transaction */
- QUERY_NOROWS(lsqlite3, FALSE, "BEGIN IMMEDIATE;");
+ /* Get a canonicalised copy of the data */
+ a->syntax->canonicalise_fn(module->ldb, mem_ctx, &(subval), &value);
+ if (value.data == NULL) {
+ return NULL;
+ }
- /*
- * Obtain the eid of the base DN
- */
- QUERY_INT(lsqlite3,
- eid,
- TRUE,
- "SELECT eid "
- " FROM ldb_attr_dn "
- " WHERE attr_value = %Q;",
- pBaseDN);
-
- /* Parse the filter expression into a tree we can work with */
- if ((pTree = ldb_parse_tree(module->ldb, pExpression)) == NULL) {
- return -1;
- }
-
- /* Allocate a temporary talloc context */
- hTalloc = talloc_new(module->ldb);
+ return lsqlite3_tprintf(mem_ctx,
+ "SELECT eid FROM ldb_attribute_values "
+ "WHERE norm_attr_name = '%q' "
+ "AND norm_attr_value GLOB '%q'",
+ attr,
+ value.data);
+
+ case LDB_OP_GREATER:
+ attr = ldb_attr_casefold(mem_ctx, t->u.equality.attr);
+ if (attr == NULL) return NULL;
+ a = ldb_schema_attribute_by_name(module->ldb, attr);
+
+ /* Get a canonicalised copy of the data */
+ a->syntax->canonicalise_fn(module->ldb, mem_ctx, &(t->u.equality.value), &value);
+ if (value.data == NULL) {
+ return NULL;
+ }
- /* Move the parse tree to our temporary context */
- talloc_steal(hTalloc, pTree);
-
- /* Convert filter into a series of SQL statements (constraints) */
- pSqlConstraints = parsetree_to_sql(module, hTalloc, pTree);
-
- /* Get the list of attribute names to use as our extra table list */
- pTableList = parsetree_to_tablelist(module, hTalloc, pTree);
+ return lsqlite3_tprintf(mem_ctx,
+ "SELECT eid FROM ldb_attribute_values "
+ "WHERE norm_attr_name = '%q' "
+ "AND ldap_compare(norm_attr_value, '>=', '%q', '%q') ",
+ attr,
+ value.data,
+ attr);
+
+ case LDB_OP_LESS:
+ attr = ldb_attr_casefold(mem_ctx, t->u.equality.attr);
+ if (attr == NULL) return NULL;
+ a = ldb_schema_attribute_by_name(module->ldb, attr);
+
+ /* Get a canonicalised copy of the data */
+ a->syntax->canonicalise_fn(module->ldb, mem_ctx, &(t->u.equality.value), &value);
+ if (value.data == NULL) {
+ return NULL;
+ }
- 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"
- " %q\n"
- " WHERE ldb_descendants.aeid = %lld\n"
- " AND ldb_entry.eid = ldb_descendants.deid\n"
- " AND ldap_entry.eid IN\n%s\n"
- " ) "
- " AND av.eid = entry.eid "
- " ORDER BY av.eid, av.attr_name;",
- pTableList,
- eid,
- pSqlConstraints);
- break;
+ return lsqlite3_tprintf(mem_ctx,
+ "SELECT eid FROM ldb_attribute_values "
+ "WHERE norm_attr_name = '%q' "
+ "AND ldap_compare(norm_attr_value, '<=', '%q', '%q') ",
+ attr,
+ value.data,
+ attr);
+
+ case LDB_OP_PRESENT:
+ if (strcasecmp(t->u.present.attr, "dn") == 0) {
+ return talloc_strdup(mem_ctx, "SELECT eid FROM ldb_entry");
+ }
- 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 %q\n"
- " WHERE ldb_entry.eid = %lld\n"
- " AND ldb_entry.eid IN\n%s\n"
- " ) "
- " AND av.eid = entry.eid "
- " ORDER BY av.eid, av.attr_name;",
- pTableList,
- eid,
- pSqlConstraints);
- break;
+ attr = ldb_attr_casefold(mem_ctx, t->u.present.attr);
+ if (attr == NULL) return NULL;
- 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, "
- " %q\n"
- " WHERE ldb_entry.eid = pchild.eid "
- " AND pchild.peid = %lld "
- " AND ldb_entry.eid IN\n%s\n"
- " ) "
- " AND av.eid = entry.eid "
- " ORDER BY av.eid, av.attr_name;",
- pTableList,
- eid,
- pSqlConstraints);
- break;
- }
+ return lsqlite3_tprintf(mem_ctx,
+ "SELECT eid FROM ldb_attribute_values "
+ "WHERE norm_attr_name = '%q' ",
+ attr);
+
+ case LDB_OP_APPROX:
+ attr = ldb_attr_casefold(mem_ctx, t->u.equality.attr);
+ if (attr == NULL) return NULL;
+ a = ldb_schema_attribute_by_name(module->ldb, attr);
+
+ /* Get a canonicalised copy of the data */
+ a->syntax->canonicalise_fn(module->ldb, mem_ctx, &(t->u.equality.value), &value);
+ if (value.data == NULL) {
+ return NULL;
+ }
+
+ return lsqlite3_tprintf(mem_ctx,
+ "SELECT eid FROM ldb_attribute_values "
+ "WHERE norm_attr_name = '%q' "
+ "AND ldap_compare(norm_attr_value, '~%', 'q', '%q') ",
+ attr,
+ value.data,
+ attr);
+
+ case LDB_OP_EXTENDED:
+#warning "work out how to handle bitops"
+ return NULL;
+
+ default:
+ break;
+ };
- /* Initially, we have no old eid */
- prevEID = -1;
+ /* should never occur */
+ abort();
+ return NULL;
+}
+/*
+ * 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;
+ }
+
/*
* 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,
+ p,
-1,
&pStmt,
NULL)) == SQLITE_SCHEMA) {
+ if (stmtGetEID != NULL) {
+ sqlite3_finalize(stmtGetEID);
+ stmtGetEID = NULL;
+ }
continue;
} else if (ret != SQLITE_OK) {
- ret = -1;
break;
}
- /* Loop through the returned rows */
- do {
- /* 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 row data to the return results */
-#warning "finish returning the result set of the search here"
+ /* One row expected */
+ if ((ret = sqlite3_step(pStmt)) == SQLITE_SCHEMA) {
+ if (stmtGetEID != NULL) {
+ sqlite3_finalize(stmtGetEID);
+ stmtGetEID = NULL;
}
- } while (ret == SQLITE_ROW);
-
- if (ret == SQLITE_SCHEMA) {
(void) sqlite3_finalize(pStmt);
continue;
- } else if (ret != SQLITE_DONE) {
+ } else if (ret != SQLITE_ROW) {
(void) sqlite3_finalize(pStmt);
- ret = -1;
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);
+ if (stmtGetEID != NULL) {
+ sqlite3_finalize(stmtGetEID);
+ stmtGetEID = NULL;
+ }
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;
+}
- /* End the transaction */
- QUERY_NOROWS(lsqlite3, FALSE, "END TRANSACTION;");
+/*
+ * This is a bad hack to support ldap style comparisons whithin sqlite.
+ * val is the attribute in the row currently under test
+ * func is the desired test "<=" ">=" "~" ":"
+ * cmp is the value to compare against (eg: "test")
+ * attr is the attribute name the value of which we want to test
+ */
- /* We're alll done with this query */
- sqlite3_free(pSql);
+static void lsqlite3_compare(sqlite3_context *ctx, int argc,
+ sqlite3_value **argv)
+{
+ struct ldb_context *ldb = (struct ldb_context *)sqlite3_user_data(ctx);
+ const char *val = (const char *)sqlite3_value_text(argv[0]);
+ const char *func = (const char *)sqlite3_value_text(argv[1]);
+ const char *cmp = (const char *)sqlite3_value_text(argv[2]);
+ const char *attr = (const char *)sqlite3_value_text(argv[3]);
+ const struct ldb_schema_attribute *a;
+ struct ldb_val valX;
+ struct ldb_val valY;
+ int ret;
+
+ switch (func[0]) {
+ /* greater */
+ case '>': /* >= */
+ a = ldb_schema_attribute_by_name(ldb, attr);
+ valX.data = (void *)cmp;
+ valX.length = strlen(cmp);
+ valY.data = (void *)val;
+ valY.length = strlen(val);
+ ret = a->syntax->comparison_fn(ldb, ldb, &valY, &valX);
+ if (ret >= 0)
+ sqlite3_result_int(ctx, 1);
+ else
+ sqlite3_result_int(ctx, 0);
+ return;
+
+ /* lesser */
+ case '<': /* <= */
+ a = ldb_schema_attribute_by_name(ldb, attr);
+ valX.data = (void *)cmp;
+ valX.length = strlen(cmp);
+ valY.data = (void *)val;
+ valY.length = strlen(val);
+ ret = a->syntax->comparison_fn(ldb, ldb, &valY, &valX);
+ if (ret <= 0)
+ sqlite3_result_int(ctx, 1);
+ else
+ sqlite3_result_int(ctx, 0);
+ return;
+
+ /* approx */
+ case '~':
+ /* TODO */
+ sqlite3_result_int(ctx, 0);
+ return;
+
+ /* bitops */
+ case ':':
+ /* TODO */
+ sqlite3_result_int(ctx, 0);
+ return;
+
+ default:
+ break;
+ }
- return ret;
+ sqlite3_result_error(ctx, "Value must start with a special operation char (<>~:)!", -1);
+ return;
}
-/* add a record */
-static int
-lsqlite3_add(struct ldb_module *module,
- const struct ldb_message *msg)
+/* rename a record */
+static int lsqlite3_safe_rollback(sqlite3 *sqlite)
{
- long long eid;
- struct lsqlite3_private * lsqlite3 = module->private_data;
+ char *errmsg;
+ int ret;
- /* ignore ltdb specials */
- if (msg->dn[0] == '@') {
- return 0;
+ /* execute */
+ ret = sqlite3_exec(sqlite, "ROLLBACK;", NULL, NULL, &errmsg);
+ if (ret != SQLITE_OK) {
+ if (errmsg) {
+ printf("lsqlite3_safe_rollback: Error: %s\n", errmsg);
+ free(errmsg);
+ }
+ return -1;
}
- /* Begin a transaction */
- QUERY_NOROWS(lsqlite3, FALSE, "BEGIN EXCLUSIVE;");
+ return 0;
+}
- /*
- * 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;
- }
+/* return an eid as result */
+static int lsqlite3_eid_callback(void *result, int col_num, char **cols, char **names)
+{
+ long long *eid = (long long *)result;
- /* Add attributes to this new entry */
- if (msg_to_sql(module, msg, eid, FALSE) != 0) {
- QUERY_NOROWS(lsqlite3, FALSE, "ROLLBACK;");
- return -1;
- }
+ if (col_num != 1) return SQLITE_ABORT;
+ if (strcasecmp(names[0], "eid") != 0) return SQLITE_ABORT;
- /* Everything worked. Commit it! */
- QUERY_NOROWS(lsqlite3, TRUE, "COMMIT;");
- return 0;
+ *eid = atoll(cols[0]);
+ return SQLITE_OK;
}
-
-/* modify a record */
-static int
-lsqlite3_modify(struct ldb_module *module,
- const struct ldb_message *msg)
+/*
+ * add a single set of ldap message values to a ldb_message
+ */
+static int lsqlite3_search_callback(void *result, int col_num, char **cols, char **names)
{
- struct lsqlite3_private * lsqlite3 = module->private_data;
+ struct ldb_handle *handle = talloc_get_type(result, struct ldb_handle);
+ struct lsql_context *ac = talloc_get_type(handle->private_data, struct lsql_context);
+ struct ldb_message *msg;
+ long long eid;
+ int i;
+
+ /* eid, dn, attr_name, attr_value */
+ if (col_num != 4)
+ return SQLITE_ABORT;
+
+ eid = atoll(cols[0]);
+
+ if (eid != ac->current_eid) { /* here begin a new entry */
+
+ /* call the async callback for the last entry
+ * except the first time */
+ if (ac->current_eid != 0) {
+ ac->ares->message = ldb_msg_canonicalize(ac->module->ldb, ac->ares->message);
+ if (ac->ares->message == NULL)
+ return SQLITE_ABORT;
+
+ handle->status = ac->callback(ac->module->ldb, ac->context, ac->ares);
+ if (handle->status != LDB_SUCCESS)
+ return SQLITE_ABORT;
+ }
- /* ignore ltdb specials */
- if (msg->dn[0] == '@') {
- return 0;
+ /* start over */
+ ac->ares = talloc_zero(ac, struct ldb_reply);
+ if (!ac->ares)
+ return SQLITE_ABORT;
+
+ ac->ares->message = ldb_msg_new(ac->ares);
+ if (!ac->ares->message)
+ return SQLITE_ABORT;
+
+ ac->ares->type = LDB_REPLY_ENTRY;
+ ac->current_eid = eid;
}
- /* Begin a transaction */
- QUERY_NOROWS(lsqlite3, FALSE, "BEGIN EXCLUSIVE;");
+ msg = ac->ares->message;
- /* Everything worked. Commit it! */
- QUERY_NOROWS(lsqlite3, TRUE, "COMMIT;");
- return 0 ;
-}
+ if (msg->dn == NULL) {
+ msg->dn = ldb_dn_new(msg, ac->module->ldb, cols[1]);
+ if (msg->dn == NULL)
+ return SQLITE_ABORT;
+ }
-/* obtain a named lock */
-static int
-lsqlite3_lock(struct ldb_module *module,
- const char *lockname)
-{
- if (lockname == NULL) {
- return -1;
+ if (ac->attrs) {
+ int found = 0;
+ for (i = 0; ac->attrs[i]; i++) {
+ if (strcasecmp(cols[2], ac->attrs[i]) == 0) {
+ found = 1;
+ break;
+ }
+ }
+ if (!found) return SQLITE_OK;
}
- /* TODO implement a local locking mechanism here */
+ if (ldb_msg_add_string(msg, cols[2], cols[3]) != 0) {
+ return SQLITE_ABORT;
+ }
- return 0;
+ return SQLITE_OK;
}
-/* release a named lock */
-static int
-lsqlite3_unlock(struct ldb_module *module,
- const char *lockname)
+
+/*
+ * lsqlite3_get_eid()
+ * lsqlite3_get_eid_ndn()
+ *
+ * These functions are used for the very common case of retrieving an EID value
+ * given a (normalized) DN.
+ */
+
+static long long lsqlite3_get_eid_ndn(sqlite3 *sqlite, void *mem_ctx, const char *norm_dn)
{
- if (lockname == NULL) {
+ char *errmsg;
+ char *query;
+ long long eid = -1;
+ long long ret;
+
+ /* get object eid */
+ query = lsqlite3_tprintf(mem_ctx, "SELECT eid "
+ "FROM ldb_entry "
+ "WHERE norm_dn = '%q';", norm_dn);
+ if (query == NULL) return -1;
+
+ ret = sqlite3_exec(sqlite, query, lsqlite3_eid_callback, &eid, &errmsg);
+ if (ret != SQLITE_OK) {
+ if (errmsg) {
+ printf("lsqlite3_get_eid: Fatal Error: %s\n", errmsg);
+ free(errmsg);
+ }
return -1;
}
- /* TODO implement a local locking mechanism here */
-
- return 0;
+ return eid;
}
-/* return extended error information */
-static const char *
-lsqlite3_errstring(struct ldb_module *module)
+static long long lsqlite3_get_eid(struct ldb_module *module, struct ldb_dn *dn)
{
- struct lsqlite3_private * lsqlite3 = module->private_data;
+ TALLOC_CTX *local_ctx;
+ struct lsqlite3_private *lsqlite3 = module->private_data;
+ long long eid = -1;
+ char *cdn;
- return sqlite3_errmsg(lsqlite3->sqlite);
-}
+ /* ignore ltdb specials */
+ if (ldb_dn_is_special(dn)) {
+ return -1;
+ }
+
+ /* create a local ctx */
+ local_ctx = talloc_named(lsqlite3, 0, "lsqlite3_get_eid local context");
+ if (local_ctx == NULL) {
+ return -1;
+ }
+ cdn = ldb_dn_alloc_casefold(local_ctx, dn);
+ if (!cdn) goto done;
+ eid = lsqlite3_get_eid_ndn(lsqlite3->sqlite, local_ctx, cdn);
+done:
+ talloc_free(local_ctx);
+ return eid;
+}
/*
- * Static functions
+ * Interface functions referenced by lsqlite3_ops
*/
-static int
-initialize(struct lsqlite3_private *lsqlite3,
- const char *url)
+/* search for matching records, by tree */
+int lsql_search(struct ldb_module *module, struct ldb_request *req)
{
- int ret;
- long long queryInt;
- const char * pTail;
- sqlite3_stmt * stmt;
- const char * schema =
- "-- ------------------------------------------------------"
+ struct lsqlite3_private *lsqlite3 = talloc_get_type(module->private_data, struct lsqlite3_private);
+ struct lsql_context *lsql_ac;
+ char *norm_basedn;
+ char *sqlfilter;
+ char *errmsg;
+ char *query = NULL;
+ int ret;
+
+ lsql_ac = talloc_get_type(req->handle->private_data, struct lsql_context);
+
+ if ((( ! ldb_dn_is_valid(req->op.search.base)) || ldb_dn_is_null(req->op.search.base)) &&
+ (req->op.search.scope == LDB_SCOPE_BASE || req->op.search.scope == LDB_SCOPE_ONELEVEL))
+ return LDB_ERR_OPERATIONS_ERROR;
+
+ if (req->op.search.base) {
+ norm_basedn = ldb_dn_alloc_casefold(lsql_ac, req->op.search.base);
+ if (norm_basedn == NULL) {
+ ret = LDB_ERR_INVALID_DN_SYNTAX;
+ goto failed;
+ }
+ } else norm_basedn = talloc_strdup(lsql_ac, "");
- "PRAGMA auto_vacuum=1;"
+ /* Convert filter into a series of SQL conditions (constraints) */
+ sqlfilter = parsetree_to_sql(module, lsql_ac, req->op.search.tree);
+
+ switch(req->op.search.scope) {
+ case LDB_SCOPE_DEFAULT:
+ case LDB_SCOPE_SUBTREE:
+ if (*norm_basedn != '\0') {
+ query = lsqlite3_tprintf(lsql_ac,
+ "SELECT entry.eid,\n"
+ " entry.dn,\n"
+ " av.attr_name,\n"
+ " av.attr_value\n"
+ " FROM ldb_entry AS entry\n"
+
+ " LEFT OUTER JOIN ldb_attribute_values AS av\n"
+ " ON av.eid = entry.eid\n"
+
+ " WHERE entry.eid IN\n"
+ " (SELECT DISTINCT ldb_entry.eid\n"
+ " FROM ldb_entry\n"
+ " WHERE (ldb_entry.norm_dn GLOB('*,%q')\n"
+ " OR ldb_entry.norm_dn = '%q')\n"
+ " AND ldb_entry.eid IN\n"
+ " (%s)\n"
+ " )\n"
+
+ " ORDER BY entry.eid ASC;",
+ norm_basedn,
+ norm_basedn,
+ sqlfilter);
+ } else {
+ query = lsqlite3_tprintf(lsql_ac,
+ "SELECT entry.eid,\n"
+ " entry.dn,\n"
+ " av.attr_name,\n"
+ " av.attr_value\n"
+ " FROM ldb_entry AS entry\n"
+
+ " LEFT OUTER JOIN ldb_attribute_values AS av\n"
+ " ON av.eid = entry.eid\n"
+
+ " WHERE entry.eid IN\n"
+ " (SELECT DISTINCT ldb_entry.eid\n"
+ " FROM ldb_entry\n"
+ " WHERE ldb_entry.eid IN\n"
+ " (%s)\n"
+ " )\n"
+
+ " ORDER BY entry.eid ASC;",
+ sqlfilter);
+ }
- "-- ------------------------------------------------------"
+ break;
+
+ case LDB_SCOPE_BASE:
+ query = lsqlite3_tprintf(lsql_ac,
+ "SELECT entry.eid,\n"
+ " entry.dn,\n"
+ " av.attr_name,\n"
+ " av.attr_value\n"
+ " FROM ldb_entry AS entry\n"
- "BEGIN EXCLUSIVE;"
+ " LEFT OUTER JOIN ldb_attribute_values AS av\n"
+ " ON av.eid = entry.eid\n"
- "-- ------------------------------------------------------"
+ " WHERE entry.eid IN\n"
+ " (SELECT DISTINCT ldb_entry.eid\n"
+ " FROM ldb_entry\n"
+ " WHERE ldb_entry.norm_dn = '%q'\n"
+ " AND ldb_entry.eid IN\n"
+ " (%s)\n"
+ " )\n"
+
+ " ORDER BY entry.eid ASC;",
+ norm_basedn,
+ sqlfilter);
+ break;
+
+ case LDB_SCOPE_ONELEVEL:
+ query = lsqlite3_tprintf(lsql_ac,
+ "SELECT entry.eid,\n"
+ " entry.dn,\n"
+ " av.attr_name,\n"
+ " av.attr_value\n"
+ " FROM ldb_entry AS entry\n"
- "CREATE TABLE ldb_info AS"
- " SELECT 'LDB' AS database_type,"
- " '1.0' AS version;"
+ " LEFT OUTER JOIN ldb_attribute_values AS av\n"
+ " ON av.eid = entry.eid\n"
- "-- ------------------------------------------------------"
- "-- Schema"
-
- "/*"
- " * 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"
- "("
- " -- Unique identifier of this LDB entry"
- " eid INTEGER PRIMARY KEY,"
+ " WHERE entry.eid IN\n"
+ " (SELECT DISTINCT ldb_entry.eid\n"
+ " FROM ldb_entry\n"
+ " WHERE norm_dn GLOB('*,%q')\n"
+ " AND NOT norm_dn GLOB('*,*,%q')\n"
+ " AND ldb_entry.eid IN\n(%s)\n"
+ " )\n"
+
+ " ORDER BY entry.eid ASC;",
+ norm_basedn,
+ norm_basedn,
+ sqlfilter);
+ break;
+ }
- " -- Unique identifier of the parent LDB entry"
- " peid INTEGER REFERENCES ldb_entry,"
+ if (query == NULL) {
+ goto failed;
+ }
- " -- Distinguished name of this entry"
- " dn TEXT,"
+ /* * /
+ printf ("%s\n", query);
+ / * */
- " -- Time when the entry was created"
- " create_timestamp INTEGER,"
+ lsql_ac->current_eid = 0;
+ lsql_ac->attrs = req->op.search.attrs;
+ lsql_ac->ares = NULL;
- " -- Time when the entry was last modified"
- " modify_timestamp INTEGER"
- ");"
+ req->handle->state = LDB_ASYNC_PENDING;
+ ret = sqlite3_exec(lsqlite3->sqlite, query, lsqlite3_search_callback, req->handle, &errmsg);
+ if (ret != SQLITE_OK) {
+ if (errmsg) {
+ ldb_set_errstring(module->ldb, errmsg);
+ free(errmsg);
+ }
+ goto failed;
+ }
- "/*"
- " * 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"
- "("
- " -- The unique identifier of the ancestor LDB entry"
- " aeid INTEGER REFERENCES ldb_entry,"
+ /* complete the last message if any */
+ if (lsql_ac->ares) {
+ lsql_ac->ares->message = ldb_msg_canonicalize(module->ldb, lsql_ac->ares->message);
+ if (lsql_ac->ares->message == NULL)
+ goto failed;
+
+ req->handle->status = lsql_ac->callback(module->ldb, lsql_ac->context, lsql_ac->ares);
+ if (req->handle->status != LDB_SUCCESS)
+ goto failed;
+ }
- " -- The unique identifier of the descendant LDB entry"
- " deid INTEGER REFERENCES ldb_entry"
- ");"
+ req->handle->state = LDB_ASYNC_DONE;
+ return LDB_SUCCESS;
- "CREATE TABLE ldb_object_classes"
- "("
- " -- Object classes are inserted into this table to track"
- " -- their class hierarchy. 'top' is the top-level class"
- " -- of which all other classes are subclasses."
- " class_name TEXT PRIMARY KEY,"
+failed:
+ return LDB_ERR_OPERATIONS_ERROR;
+}
- " -- tree_key tracks the position of the class in"
- " -- the hierarchy"
- " tree_key TEXT UNIQUE"
- ");"
+/* add a record */
+static int lsql_add(struct ldb_module *module, struct ldb_request *req)
+{
+ struct lsqlite3_private *lsqlite3 = talloc_get_type(module->private_data, struct lsqlite3_private);
+ struct lsql_context *lsql_ac;
+ struct ldb_message *msg = req->op.add.message;
+ long long eid;
+ char *dn, *ndn;
+ char *errmsg;
+ char *query;
+ int i;
+ int ret = LDB_SUCCESS;
+
+ lsql_ac = talloc_get_type(req->handle->private_data, struct lsql_context);
+ req->handle->state = LDB_ASYNC_DONE;
+ req->handle->status = LDB_SUCCESS;
+
+ /* See if this is an ltdb special */
+ if (ldb_dn_is_special(msg->dn)) {
+/*
+ struct ldb_dn *c;
+ c = ldb_dn_new(local_ctx, module->ldb, "@INDEXLIST");
+ if (ldb_dn_compare(module->ldb, msg->dn, c) == 0) {
+#warning "should we handle indexes somehow ?"
+ ret = LDB_ERR_UNWILLING_TO_PERFORM;
+ goto done;
+ }
+*/
+ /* Others return an error */
+ ret = LDB_ERR_UNWILLING_TO_PERFORM;
+ goto done;
+ }
- "/*"
- " * We keep a full listing of attribute/value pairs here"
- " */"
- "CREATE TABLE ldb_attribute_values"
- "("
- " eid INTEGER REFERENCES ldb_entry,"
- " attr_name TEXT, -- see ldb_attr_ATTRIBUTE_NAME"
- " attr_value TEXT"
- ");"
+ /* create linearized and normalized dns */
+ dn = ldb_dn_alloc_linearized(lsql_ac, msg->dn);
+ ndn = ldb_dn_alloc_casefold(lsql_ac, msg->dn);
+ if (dn == NULL || ndn == NULL) {
+ ret = LDB_ERR_OTHER;
+ goto done;
+ }
- "/*"
- " * There is one attribute table per searchable attribute."
- " */"
- "/*"
- "CREATE TABLE ldb_attr_ATTRIBUTE_NAME"
- "("
- " -- The unique identifier of the LDB entry"
- " eid INTEGER REFERENCES ldb_entry,"
+ query = lsqlite3_tprintf(lsql_ac,
+ /* Add new entry */
+ "INSERT OR ABORT INTO ldb_entry "
+ "('dn', 'norm_dn') "
+ "VALUES ('%q', '%q');",
+ dn, ndn);
+ if (query == NULL) {
+ ret = LDB_ERR_OTHER;
+ goto done;
+ }
- " -- Normalized attribute value"
- " attr_value TEXT"
- ");"
- "*/"
+ ret = sqlite3_exec(lsqlite3->sqlite, query, NULL, NULL, &errmsg);
+ if (ret != SQLITE_OK) {
+ if (errmsg) {
+ ldb_set_errstring(module->ldb, errmsg);
+ free(errmsg);
+ }
+ ret = LDB_ERR_OTHER;
+ goto done;
+ }
+ eid = lsqlite3_get_eid_ndn(lsqlite3->sqlite, lsql_ac, ndn);
+ if (eid == -1) {
+ ret = LDB_ERR_OTHER;
+ goto done;
+ }
- "-- ------------------------------------------------------"
- "-- Indexes"
+ for (i = 0; i < msg->num_elements; i++) {
+ const struct ldb_message_element *el = &msg->elements[i];
+ const struct ldb_schema_attribute *a;
+ char *attr;
+ int j;
+
+ /* Get a case-folded copy of the attribute name */
+ attr = ldb_attr_casefold(lsql_ac, el->name);
+ if (attr == NULL) {
+ ret = LDB_ERR_OTHER;
+ goto done;
+ }
+ a = ldb_schema_attribute_by_name(module->ldb, el->name);
- "-- ------------------------------------------------------"
- "-- Triggers"
+ /* For each value of the specified attribute name... */
+ for (j = 0; j < el->num_values; j++) {
+ struct ldb_val value;
+ char *insert;
+
+ /* Get a canonicalised copy of the data */
+ a->syntax->canonicalise_fn(module->ldb, lsql_ac, &(el->values[j]), &value);
+ if (value.data == NULL) {
+ ret = LDB_ERR_OTHER;
+ goto done;
+ }
- "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;"
+ insert = lsqlite3_tprintf(lsql_ac,
+ "INSERT OR ROLLBACK INTO ldb_attribute_values "
+ "('eid', 'attr_name', 'norm_attr_name',"
+ " 'attr_value', 'norm_attr_value') "
+ "VALUES ('%lld', '%q', '%q', '%q', '%q');",
+ eid, el->name, attr,
+ el->values[j].data, value.data);
+ if (insert == NULL) {
+ ret = LDB_ERR_OTHER;
+ goto done;
+ }
- "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;"
+ ret = sqlite3_exec(lsqlite3->sqlite, insert, NULL, NULL, &errmsg);
+ if (ret != SQLITE_OK) {
+ if (errmsg) {
+ ldb_set_errstring(module->ldb, errmsg);
+ free(errmsg);
+ }
+ ret = LDB_ERR_OTHER;
+ goto done;
+ }
+ }
+ }
- "-- ------------------------------------------------------"
- "-- Table initialization"
+ if (lsql_ac->callback) {
+ req->handle->status = lsql_ac->callback(module->ldb, lsql_ac->context, NULL);
+ }
+
+done:
+ req->handle->state = LDB_ASYNC_DONE;
+ return ret;
+}
- "/* We need an implicit 'top' level object class */"
- "INSERT INTO ldb_attributes (attr_name,"
- " parent_tree_key)"
- " SELECT 'top', '';"
+/* modify a record */
+static int lsql_modify(struct ldb_module *module, struct ldb_request *req)
+{
+ struct lsqlite3_private *lsqlite3 = talloc_get_type(module->private_data, struct lsqlite3_private);
+ struct lsql_context *lsql_ac;
+ struct ldb_message *msg = req->op.mod.message;
+ long long eid;
+ char *errmsg;
+ int i;
+ int ret = LDB_SUCCESS;
+
+ lsql_ac = talloc_get_type(req->handle->private_data, struct lsql_context);
+ req->handle->state = LDB_ASYNC_DONE;
+ req->handle->status = LDB_SUCCESS;
+
+ /* See if this is an ltdb special */
+ if (ldb_dn_is_special(msg->dn)) {
+ /* Others return an error */
+ ret = LDB_ERR_UNWILLING_TO_PERFORM;
+ goto done;
+ }
- "-- ------------------------------------------------------"
+ eid = lsqlite3_get_eid(module, msg->dn);
+ if (eid == -1) {
+ ret = LDB_ERR_OTHER;
+ goto done;
+ }
- "COMMIT;"
+ for (i = 0; i < msg->num_elements; i++) {
+ const struct ldb_message_element *el = &msg->elements[i];
+ const struct ldb_schema_attribute *a;
+ int flags = el->flags & LDB_FLAG_MOD_MASK;
+ char *attr;
+ char *mod;
+ int j;
+
+ /* Get a case-folded copy of the attribute name */
+ attr = ldb_attr_casefold(lsql_ac, el->name);
+ if (attr == NULL) {
+ ret = LDB_ERR_OTHER;
+ goto done;
+ }
- "-- ------------------------------------------------------"
- ;
-
- /* Skip protocol indicator of url */
- if (strncmp(url, "sqlite://", 9) != 0) {
- return SQLITE_MISUSE;
- }
+ a = ldb_schema_attribute_by_name(module->ldb, el->name);
+
+ switch (flags) {
+
+ case LDB_FLAG_MOD_REPLACE:
+
+ /* remove all attributes before adding the replacements */
+ mod = lsqlite3_tprintf(lsql_ac,
+ "DELETE FROM ldb_attribute_values "
+ "WHERE eid = '%lld' "
+ "AND norm_attr_name = '%q';",
+ eid, attr);
+ if (mod == NULL) {
+ ret = LDB_ERR_OTHER;
+ goto done;
+ }
- /* 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;
- }
+ ret = sqlite3_exec(lsqlite3->sqlite, mod, NULL, NULL, &errmsg);
+ if (ret != SQLITE_OK) {
+ if (errmsg) {
+ ldb_set_errstring(module->ldb, errmsg);
+ free(errmsg);
+ }
+ ret = LDB_ERR_OTHER;
+ goto done;
+ }
- /* Begin a transaction */
- QUERY_NOROWS(lsqlite3, FALSE, "BEGIN EXCLUSIVE;");
+ /* MISSING break is INTENTIONAL */
+
+ case LDB_FLAG_MOD_ADD:
+#warning "We should throw an error if no value is provided!"
+ /* For each value of the specified attribute name... */
+ for (j = 0; j < el->num_values; j++) {
+ struct ldb_val value;
+
+ /* Get a canonicalised copy of the data */
+ a->syntax->canonicalise_fn(module->ldb, lsql_ac, &(el->values[j]), &value);
+ if (value.data == NULL) {
+ ret = LDB_ERR_OTHER;
+ goto done;
+ }
+
+ mod = lsqlite3_tprintf(lsql_ac,
+ "INSERT OR ROLLBACK INTO ldb_attribute_values "
+ "('eid', 'attr_name', 'norm_attr_name',"
+ " 'attr_value', 'norm_attr_value') "
+ "VALUES ('%lld', '%q', '%q', '%q', '%q');",
+ eid, el->name, attr,
+ el->values[j].data, value.data);
+
+ if (mod == NULL) {
+ ret = LDB_ERR_OTHER;
+ goto done;
+ }
+
+ ret = sqlite3_exec(lsqlite3->sqlite, mod, NULL, NULL, &errmsg);
+ if (ret != SQLITE_OK) {
+ if (errmsg) {
+ ldb_set_errstring(module->ldb, errmsg);
+ free(errmsg);
+ }
+ ret = LDB_ERR_OTHER;
+ goto done;
+ }
+ }
- /* Determine if this is a new database. No tables means it is. */
- QUERY_INT(lsqlite3,
- queryInt,
- TRUE,
- "SELECT COUNT(*) "
- " FROM sqlite_master "
- " WHERE type = 'table';");
+ break;
- if (queryInt == 0) {
- /*
- * Create the database schema
- */
- for (pTail = discard_const_p(char, schema); pTail != NULL; ) {
-
- 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;
- }
- }
+ case LDB_FLAG_MOD_DELETE:
+#warning "We should throw an error if the attribute we are trying to delete does not exist!"
+ if (el->num_values == 0) {
+ mod = lsqlite3_tprintf(lsql_ac,
+ "DELETE FROM ldb_attribute_values "
+ "WHERE eid = '%lld' "
+ "AND norm_attr_name = '%q';",
+ eid, attr);
+ if (mod == NULL) {
+ ret = LDB_ERR_OTHER;
+ goto done;
+ }
+
+ ret = sqlite3_exec(lsqlite3->sqlite, mod, NULL, NULL, &errmsg);
+ if (ret != SQLITE_OK) {
+ if (errmsg) {
+ ldb_set_errstring(module->ldb, errmsg);
+ free(errmsg);
+ }
+ ret = LDB_ERR_OTHER;
+ goto done;
+ }
+ }
- /* Commit the transaction */
- QUERY_NOROWS(lsqlite3, FALSE, "COMMIT;");
+ /* For each value of the specified attribute name... */
+ for (j = 0; j < el->num_values; j++) {
+ struct ldb_val value;
+
+ /* Get a canonicalised copy of the data */
+ a->syntax->canonicalise_fn(module->ldb, lsql_ac, &(el->values[j]), &value);
+ if (value.data == NULL) {
+ ret = LDB_ERR_OTHER;
+ goto done;
+ }
+
+ mod = lsqlite3_tprintf(lsql_ac,
+ "DELETE FROM ldb_attribute_values "
+ "WHERE eid = '%lld' "
+ "AND norm_attr_name = '%q' "
+ "AND norm_attr_value = '%q';",
+ eid, attr, value.data);
+
+ if (mod == NULL) {
+ ret = LDB_ERR_OTHER;
+ goto done;
+ }
+
+ ret = sqlite3_exec(lsqlite3->sqlite, mod, NULL, NULL, &errmsg);
+ if (ret != SQLITE_OK) {
+ if (errmsg) {
+ ldb_set_errstring(module->ldb, errmsg);
+ free(errmsg);
+ }
+ ret = LDB_ERR_OTHER;
+ goto done;
+ }
+ }
- return SQLITE_OK;
+ break;
+ }
+ }
+
+ if (lsql_ac->callback) {
+ req->handle->status = lsql_ac->callback(module->ldb, lsql_ac->context, NULL);
+ }
+
+done:
+ req->handle->state = LDB_ASYNC_DONE;
+ return ret;
}
-static int
-destructor(void *p)
+/* delete a record */
+static int lsql_delete(struct ldb_module *module, struct ldb_request *req)
{
- struct lsqlite3_private * lsqlite3 = p;
+ struct lsqlite3_private *lsqlite3 = talloc_get_type(module->private_data, struct lsqlite3_private);
+ struct lsql_context *lsql_ac;
+ long long eid;
+ char *errmsg;
+ char *query;
+ int ret = LDB_SUCCESS;
- (void) sqlite3_close(lsqlite3->sqlite);
- return 0;
-}
+ lsql_ac = talloc_get_type(req->handle->private_data, struct lsql_context);
+ req->handle->state = LDB_ASYNC_DONE;
+ req->handle->status = LDB_SUCCESS;
-/*
- * 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;
- const char * pTail;
- sqlite3_stmt * pStmt;
- va_list args;
-
- /* Begin access to variable argument list */
- va_start(args, pSql);
+ eid = lsqlite3_get_eid(module, req->op.del.dn);
+ if (eid == -1) {
+ goto done;
+ }
- /* Format the query */
- if ((p = sqlite3_vmprintf(pSql, args)) == NULL) {
- return -1;
- }
+ query = lsqlite3_tprintf(lsql_ac,
+ /* Delete entry */
+ "DELETE FROM ldb_entry WHERE eid = %lld; "
+ /* Delete attributes */
+ "DELETE FROM ldb_attribute_values WHERE eid = %lld; ",
+ eid, eid);
+ if (query == NULL) {
+ ret = LDB_ERR_OTHER;
+ goto done;
+ }
- /*
- * 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; ) {
+ ret = sqlite3_exec(lsqlite3->sqlite, query, NULL, NULL, &errmsg);
+ if (ret != SQLITE_OK) {
+ if (errmsg) {
+ ldb_set_errstring(module->ldb, errmsg);
+ free(errmsg);
+ }
+ req->handle->status = LDB_ERR_OPERATIONS_ERROR;
+ goto done;
+ }
- /* Compile the SQL statement into sqlite virtual machine */
- if ((ret = sqlite3_prepare(lsqlite3->sqlite,
- pTail,
- -1,
- &pStmt,
- &pTail)) == 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;
- }
+ if (lsql_ac->callback) {
+ ret = lsql_ac->callback(module->ldb, lsql_ac->context, NULL);
+ }
+
+done:
+ req->handle->state = LDB_ASYNC_DONE;
+ return ret;
+}
- /* 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;
- }
+/* rename a record */
+static int lsql_rename(struct ldb_module *module, struct ldb_request *req)
+{
+ struct lsqlite3_private *lsqlite3 = talloc_get_type(module->private_data, struct lsqlite3_private);
+ struct lsql_context *lsql_ac;
+ char *new_dn, *new_cdn, *old_cdn;
+ char *errmsg;
+ char *query;
+ int ret = LDB_SUCCESS;
+
+ lsql_ac = talloc_get_type(req->handle->private_data, struct lsql_context);
+ req->handle->state = LDB_ASYNC_DONE;
+ req->handle->status = LDB_SUCCESS;
+
+ /* create linearized and normalized dns */
+ old_cdn = ldb_dn_alloc_casefold(lsql_ac, req->op.rename.olddn);
+ new_cdn = ldb_dn_alloc_casefold(lsql_ac, req->op.rename.newdn);
+ new_dn = ldb_dn_alloc_linearized(lsql_ac, req->op.rename.newdn);
+ if (old_cdn == NULL || new_cdn == NULL || new_dn == NULL) {
+ goto done;
+ }
- /*
- * Normal condition is only one time through loop. Loop is
- * rerun in error conditions, via "continue", above.
- */
- ret = 0;
- bLoop = FALSE;
- }
+ /* build the SQL query */
+ query = lsqlite3_tprintf(lsql_ac,
+ "UPDATE ldb_entry SET dn = '%q', norm_dn = '%q' "
+ "WHERE norm_dn = '%q';",
+ new_dn, new_cdn, old_cdn);
+ if (query == NULL) {
+ goto done;
+ }
- /* All done with variable argument list */
- va_end(args);
+ /* execute */
+ ret = sqlite3_exec(lsqlite3->sqlite, query, NULL, NULL, &errmsg);
+ if (ret != SQLITE_OK) {
+ if (errmsg) {
+ ldb_set_errstring(module->ldb, errmsg);
+ free(errmsg);
+ }
+ ret = LDB_ERR_OPERATIONS_ERROR;
+ goto done;
+ }
- /* Free the memory we allocated for our query string */
- sqlite3_free(p);
+ if (lsql_ac->callback) {
+ ret = lsql_ac->callback(module->ldb, lsql_ac->context, NULL);
+ }
- return ret;
+done:
+ req->handle->state = LDB_ASYNC_DONE;
+ 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,
- ...)
+static int lsql_start_trans(struct ldb_module * module)
{
- int ret;
- int bLoop;
- char * p;
- const char * pTail;
- 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;
- }
-
- /*
- * 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,
- pTail,
- -1,
- &pStmt,
- &pTail)) == SQLITE_SCHEMA) {
- continue;
- } else if (ret != SQLITE_OK) {
- ret = -1;
- 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);
- ret = -1;
- 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);
- 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);
+ int ret;
+ char *errmsg;
+ struct lsqlite3_private * lsqlite3 = module->private_data;
- return ret;
-}
+ if (lsqlite3->trans_count == 0) {
+ ret = sqlite3_exec(lsqlite3->sqlite, "BEGIN IMMEDIATE;", NULL, NULL, &errmsg);
+ if (ret != SQLITE_OK) {
+ if (errmsg) {
+ printf("lsqlite3_start_trans: error: %s\n", errmsg);
+ free(errmsg);
+ }
+ return -1;
+ }
+ };
+ lsqlite3->trans_count++;
-/*
- 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;
+ return 0;
}
-
-/*
- * add a single set of ldap message values to a ldb_message
- */
-
-#warning "add_msg_attr() not yet implemented or used"
-#if 0
-static int
-add_msg_attr(struct ldb_context *ldb,
- struct ldb_message *msg,
- const char *attr,
- struct berval **bval)
+static int lsql_end_trans(struct ldb_module *module)
{
- int i;
- int count;
- struct ldb_message_element * el;
-
- count = ldap_count_values_len(bval);
-
- if (count <= 0) {
- return -1;
+ int ret;
+ char *errmsg;
+ struct lsqlite3_private *lsqlite3 = module->private_data;
+
+ if (lsqlite3->trans_count > 0) {
+ lsqlite3->trans_count--;
+ } else return -1;
+
+ if (lsqlite3->trans_count == 0) {
+ ret = sqlite3_exec(lsqlite3->sqlite, "COMMIT;", NULL, NULL, &errmsg);
+ if (ret != SQLITE_OK) {
+ if (errmsg) {
+ printf("lsqlite3_end_trans: error: %s\n", errmsg);
+ free(errmsg);
+ }
+ return -1;
+ }
}
- el = talloc_realloc(msg, msg->elements, struct ldb_message_element,
- msg->num_elements + 1);
- if (!el) {
- errno = ENOMEM;
- return -1;
- }
+ return 0;
+}
- msg->elements = el;
+static int lsql_del_trans(struct ldb_module *module)
+{
+ struct lsqlite3_private *lsqlite3 = module->private_data;
- el = &msg->elements[msg->num_elements];
+ if (lsqlite3->trans_count > 0) {
+ lsqlite3->trans_count--;
+ } else return -1;
- el->name = talloc_strdup(msg->elements, attr);
- if (!el->name) {
- errno = ENOMEM;
- return -1;
+ if (lsqlite3->trans_count == 0) {
+ return lsqlite3_safe_rollback(lsqlite3->sqlite);
}
- el->flags = 0;
- el->num_values = 0;
- el->values = talloc_array(msg->elements, struct ldb_val, count);
- if (!el->values) {
- errno = ENOMEM;
- return -1;
- }
+ return -1;
+}
- for (i=0;i<count;i++) {
- el->values[i].data = talloc_memdup(el->values, bval[i]->bv_val, bval[i]->bv_len);
- if (!el->values[i].data) {
- return -1;
- }
- el->values[i].length = bval[i]->bv_len;
- el->num_values++;
+static int destructor(struct lsqlite3_private *lsqlite3)
+{
+ if (lsqlite3->sqlite) {
+ sqlite3_close(lsqlite3->sqlite);
}
-
- msg->num_elements++;
-
return 0;
}
-#endif
-static char *
-parsetree_to_sql(struct ldb_module *module,
- char * hTalloc,
- const struct ldb_parse_tree *t)
+static int lsql_request(struct ldb_module *module, struct ldb_request *req)
{
- int i;
- char * child;
- char * p;
- char * ret = NULL;
- char * pAttrName;
-
-
- switch(t->operation) {
- case LDB_OP_SIMPLE:
- break;
-
- case LDB_OP_EXTENDED:
-#warning "derrell, you'll need to work out how to handle bitops"
- return NULL;
+ return LDB_ERR_OPERATIONS_ERROR;
+}
- 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);
- }
+static int lsql_run_request(struct ldb_module *module, struct ldb_request *req)
+{
+ switch (req->operation) {
+ case LDB_SEARCH:
+ return lsql_search(module, req);
+ break;
+ case LDB_ADD:
+ return lsql_add(module, req);
+ break;
+ case LDB_MODIFY:
+ return lsql_modify(module, req);
+ break;
+ case LDB_DELETE:
+ return lsql_delete(module, req);
+ break;
+ case LDB_RENAME:
+ return lsql_rename(module, req);
+ break;
+/* TODO:
+ case LDB_SEQUENCE_NUMBER:
+ return lsql_sequence_number(module, req);
+ break;
+ */
+ default:
+ return lsql_request(module, req);
+ break;
+ }
- child = ret;
- ret = talloc_asprintf("(\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("(\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);
+ return LDB_ERR_OPERATIONS_ERROR;
+}
- /*
- * 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;
- }
+static int lsql_handle_request(struct ldb_module *module, struct ldb_request *req)
+{
+ struct lsql_context *ac;
- ret = talloc_strdup(hTalloc, p);
- sqlite3_free(p);
+ if (check_critical_controls(req->controls)) {
+ return LDB_ERR_UNSUPPORTED_CRITICAL_EXTENSION;
+ }
- } 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;
- }
+ ac = talloc_zero(req, struct lsql_context);
+ if (ac == NULL) {
+ ldb_set_errstring(module->ldb, "Out of Memory");
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
- 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;
- }
+ ac->module = module;
+ ac->req = req;
- ret = talloc_strdup(hTalloc, p);
- sqlite3_free(p);
+ req->handle = ldb_handle_new(req, lsql_run_request, ac);
+ if (req->handle == NULL) {
+ talloc_free(ac);
+ return LDB_ERR_OPERATIONS_ERROR;
}
- return ret;
-}
-
-static char *
-parsetree_to_tablelist(struct ldb_module *module,
- char * hTalloc,
- const struct ldb_parse_tree *t)
-{
-#warning "obtain talloc'ed array of attribute names for table list"
- return NULL;
+ return LDB_SUCCESS;
}
-
/*
- * Issue a series of SQL statements to implement the ADD/MODIFY/DELETE
- * requests in the ldb_message
+ * Table of operations for the sqlite3 backend
*/
-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];
+static const struct ldb_module_ops lsqlite3_ops = {
+ .name = "sqlite",
+ .search = lsql_handle_request,
+ .add = lsql_handle_request,
+ .modify = lsql_handle_request,
+ .del = lsql_handle_request,
+ .rename = lsql_handle_request,
+ .request = lsql_handle_request,
+ .start_transaction = lsql_start_trans,
+ .end_transaction = lsql_end_trans,
+ .del_transaction = lsql_del_trans,
+ /* TODO: .sequence_number = lsql_handle_request */
+};
- if (! use_flags) {
- flags = LDB_FLAG_MOD_ADD;
- } else {
- flags = el->flags & LDB_FLAG_MOD_MASK;
- }
+/*
+ * Static functions
+ */
- /* Get a case-folded copy of the attribute name */
- pAttrName = ldb_casefold((struct ldb_context *) module,
- el->name);
+static int initialize(struct lsqlite3_private *lsqlite3,
+ struct ldb_context *ldb, const char *url, int flags)
+{
+ TALLOC_CTX *local_ctx;
+ long long queryInt;
+ int rollback = 0;
+ char *errmsg;
+ char *schema;
+ int ret;
+
+ /* create a local ctx */
+ local_ctx = talloc_named(lsqlite3, 0, "lsqlite3_rename local context");
+ if (local_ctx == NULL) {
+ return -1;
+ }
- if (flags == LDB_FLAG_MOD_ADD) {
- /* Create the attribute table if it doesn't exist */
- if (new_attr(module, pAttrName) != 0) {
- return -1;
- }
- }
+ schema = lsqlite3_tprintf(local_ctx,
+
+
+ "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 AUTOINCREMENT,"
+ " dn TEXT UNIQUE NOT NULL,"
+ " norm_dn TEXT UNIQUE NOT NULL"
+ ");"
+
- /* For each value of the specified attribute name... */
- for (j = 0; j < el->num_values; j++) {
+ "CREATE TABLE ldb_object_classes"
+ "("
+ " class_name TEXT PRIMARY KEY,"
+ " parent_class_name TEXT,"
+ " tree_key TEXT UNIQUE,"
+ " max_child_num INTEGER DEFAULT 0"
+ ");"
+
+ /*
+ * We keep a full listing of attribute/value pairs here
+ */
+ "CREATE TABLE ldb_attribute_values"
+ "("
+ " eid INTEGER REFERENCES ldb_entry,"
+ " attr_name TEXT,"
+ " norm_attr_name TEXT,"
+ " attr_value TEXT,"
+ " norm_attr_value TEXT "
+ ");"
+
+
+ /*
+ * Indexes
+ */
+ "CREATE INDEX ldb_attribute_values_eid_idx "
+ " ON ldb_attribute_values (eid);"
+
+ "CREATE INDEX ldb_attribute_values_name_value_idx "
+ " ON ldb_attribute_values (attr_name, norm_attr_value);"
+
+
- /* ... bind the attribute value, if necessary */
- switch (flags) {
- case LDB_FLAG_MOD_ADD:
- QUERY_NOROWS(lsqlite3,
- FALSE,
- "INSERT INTO ldb_attr_%q "
- " (eid, attr_value) "
- " VALUES "
- " (%lld, %Q);",
- pAttrName,
- eid, el->values[j].data);
- QUERY_NOROWS(lsqlite3,
- FALSE,
- "UPDATE ldb_entry "
- " SET entry_data = "
- " add_attr(entry_data, "
- " %Q, %Q) "
- " WHERE eid = %lld;",
- el->name, el->values[j].data,
- eid);
-
- break;
+ /*
+ * Triggers
+ */
+
+ "CREATE TRIGGER ldb_object_classes_insert_tr"
+ " AFTER INSERT"
+ " ON ldb_object_classes"
+ " FOR EACH ROW"
+ " BEGIN"
+ " UPDATE ldb_object_classes"
+ " SET tree_key = COALESCE(tree_key, "
+ " ("
+ " SELECT tree_key || "
+ " (SELECT base160(max_child_num + 1)"
+ " FROM ldb_object_classes"
+ " WHERE class_name = "
+ " new.parent_class_name)"
+ " FROM ldb_object_classes "
+ " WHERE class_name = new.parent_class_name "
+ " ));"
+ " UPDATE ldb_object_classes "
+ " SET max_child_num = max_child_num + 1"
+ " WHERE class_name = new.parent_class_name;"
+ " END;"
- case LDB_FLAG_MOD_REPLACE:
- QUERY_NOROWS(lsqlite3,
- FALSE,
- "UPDATE ldb_attr_%q "
- " SET attr_value = %Q "
- " WHERE eid = %lld;",
- pAttrName,
- el->values[j].data,
- eid);
- QUERY_NOROWS(lsqlite3,
- FALSE,
- "UPDATE ldb_entry "
- " SET entry_data = "
- " mod_attr(entry_data, "
- " %Q, %Q) "
- " WHERE eid = %lld;",
- el->name, el->values[j].data,
- eid);
- break;
+ /*
+ * Table initialization
+ */
- case LDB_FLAG_MOD_DELETE:
- /* No additional parameters to this query */
- QUERY_NOROWS(lsqlite3,
- FALSE,
- "DELETE FROM ldb_attr_%q "
- " WHERE eid = %lld "
- " AND attr_value = %Q;",
- pAttrName,
- eid,
- el->values[j].data);
- QUERY_NOROWS(lsqlite3,
- FALSE,
- "UPDATE ldb_entry "
- " SET entry_data = "
- " del_attr(entry_data, "
- " %Q, %Q) "
- " WHERE eid = %lld;",
- el->name, el->values[j].data,
- eid);
- break;
- }
+ "INSERT INTO ldb_object_classes "
+ " (class_name, tree_key) "
+ " VALUES "
+ " ('TOP', '0001');");
+
+ /* Skip protocol indicator of url */
+ if (strncmp(url, "sqlite3://", 10) != 0) {
+ return SQLITE_MISUSE;
+ }
+
+ /* Update pointer to just after the protocol indicator */
+ url += 10;
+
+ /* 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 */
+ ret = sqlite3_exec(lsqlite3->sqlite, "PRAGMA auto_vacuum = 1;", NULL, NULL, &errmsg);
+ if (ret != SQLITE_OK) {
+ if (errmsg) {
+ printf("lsqlite3 initializaion error: %s\n", errmsg);
+ free(errmsg);
}
+ goto failed;
}
-
- 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;
- 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;
+
+ if (flags & LDB_FLG_NOSYNC) {
+ /* DANGEROUS */
+ ret = sqlite3_exec(lsqlite3->sqlite, "PRAGMA synchronous = OFF;", NULL, NULL, &errmsg);
+ if (ret != SQLITE_OK) {
+ if (errmsg) {
+ printf("lsqlite3 initializaion error: %s\n", errmsg);
+ free(errmsg);
+ }
+ goto failed;
+ }
+ }
+
+ /* */
+
+ /* Establish a busy timeout of 30 seconds */
+ if ((ret = sqlite3_busy_timeout(lsqlite3->sqlite,
+ 30000)) != SQLITE_OK) {
+ return ret;
}
- /* Allocate a string to hold the partial DN of each component */
- if ((pPartialDN = talloc_strdup(ldb, "")) == NULL) {
- return -1;
+ /* Create a function, callable from sql, to increment a tree_key */
+ if ((ret =
+ sqlite3_create_function(lsqlite3->sqlite,/* handle */
+ "base160_next", /* function name */
+ 1, /* number of args */
+ SQLITE_ANY, /* preferred text type */
+ NULL, /* user data */
+ base160next_sql, /* called func */
+ NULL, /* step func */
+ NULL /* final func */
+ )) != SQLITE_OK) {
+ return ret;
}
- /* 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);
+ /* Create a function, callable from sql, to convert int to base160 */
+ if ((ret =
+ sqlite3_create_function(lsqlite3->sqlite,/* handle */
+ "base160", /* function name */
+ 1, /* number of args */
+ SQLITE_ANY, /* preferred text type */
+ NULL, /* user data */
+ base160_sql, /* called func */
+ NULL, /* step func */
+ NULL /* final func */
+ )) != SQLITE_OK) {
+ return ret;
+ }
- /* Save the new partial DN */
- pPartialDN = p;
+ /* Create a function, callable from sql, to perform various comparisons */
+ if ((ret =
+ sqlite3_create_function(lsqlite3->sqlite, /* handle */
+ "ldap_compare", /* function name */
+ 4, /* number of args */
+ SQLITE_ANY, /* preferred text type */
+ ldb , /* user data */
+ lsqlite3_compare, /* called func */
+ NULL, /* step func */
+ NULL /* final func */
+ )) != SQLITE_OK) {
+ return ret;
+ }
+ /* Begin a transaction */
+ ret = sqlite3_exec(lsqlite3->sqlite, "BEGIN EXCLUSIVE;", NULL, NULL, &errmsg);
+ if (ret != SQLITE_OK) {
+ if (errmsg) {
+ printf("lsqlite3: initialization error: %s\n", errmsg);
+ free(errmsg);
+ }
+ goto failed;
+ }
+ rollback = 1;
+
+ /* Determine if this is a new database. No tables means it is. */
+ if (query_int(lsqlite3,
+ &queryInt,
+ "SELECT COUNT(*)\n"
+ " FROM sqlite_master\n"
+ " WHERE type = 'table';") != 0) {
+ goto failed;
+ }
+
+ if (queryInt == 0) {
/*
- * 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.
+ * Create the database schema
*/
- if (bFirst) {
- /* This is a top-level entry. Parent EID is null. */
- QUERY_NOROWS(lsqlite3,
- FALSE,
- "INSERT %s INTO ldb_entry "
- " (peid, dn) "
- " VALUES "
- " (NULL, %q);",
- nComponent == 0 ? "" : "OR IGNORE",
- pPartialDN);
- } else {
- QUERY_NOROWS(lsqlite3,
- FALSE,
- "INSERT %s INTO ldb_entry "
- " (peid, dn) "
- " VALUES "
- " (%lld, %q);",
- nComponent == 0 ? "" : "OR IGNORE",
- eid, pPartialDN);
+ ret = sqlite3_exec(lsqlite3->sqlite, schema, NULL, NULL, &errmsg);
+ if (ret != SQLITE_OK) {
+ if (errmsg) {
+ printf("lsqlite3 initializaion error: %s\n", errmsg);
+ free(errmsg);
+ }
+ goto failed;
+ }
+ } else {
+ /*
+ * Ensure that the database we opened is one of ours
+ */
+ if (query_int(lsqlite3,
+ &queryInt,
+ "SELECT "
+ " (SELECT COUNT(*) = 2"
+ " FROM sqlite_master "
+ " WHERE type = 'table' "
+ " AND name IN "
+ " ("
+ " 'ldb_entry', "
+ " '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! */
+ goto failed;
}
-
- /* Get the EID of the just inserted row (the next parent) */
- eid = sqlite3_last_insert_rowid(lsqlite3->sqlite);
}
+
+ /* Commit the transaction */
+ ret = sqlite3_exec(lsqlite3->sqlite, "COMMIT;", NULL, NULL, &errmsg);
+ if (ret != SQLITE_OK) {
+ if (errmsg) {
+ printf("lsqlite3: iniialization error: %s\n", errmsg);
+ free(errmsg);
+ }
+ goto failed;
+ }
+
+ return SQLITE_OK;
- /* Give 'em what they came for! */
- *pEID = eid;
-
- return 0;
+failed:
+ if (rollback) lsqlite3_safe_rollback(lsqlite3->sqlite);
+ sqlite3_close(lsqlite3->sqlite);
+ return -1;
}
-
-static int
-new_attr(struct ldb_module * module,
- char * pAttrName)
+/*
+ * connect to the database
+ */
+static int lsqlite3_connect(struct ldb_context *ldb,
+ const char *url,
+ unsigned int flags,
+ const char *options[],
+ struct ldb_module **module)
{
- long long bExists;
- struct lsqlite3_private * lsqlite3 = module->private_data;
+ int i;
+ int ret;
+ struct lsqlite3_private * lsqlite3 = NULL;
+
+ lsqlite3 = talloc(ldb, struct lsqlite3_private);
+ if (!lsqlite3) {
+ goto failed;
+ }
+
+ lsqlite3->sqlite = NULL;
+ lsqlite3->options = NULL;
+ lsqlite3->trans_count = 0;
+
+ ret = initialize(lsqlite3, ldb, url, flags);
+ if (ret != SQLITE_OK) {
+ goto failed;
+ }
+
+ talloc_set_destructor(lsqlite3, destructor);
+
- /*
- * NOTE:
- * pAttrName is assumed to already be case-folded here!
- */
- /* See if the table already exists */
- QUERY_INT(lsqlite3,
- bExists,
- FALSE,
- "SELECT COUNT(*) <> 0"
- " FROM sqlite_master "
- " WHERE type = 'table' "
- " AND tbl_name = %Q;",
- pAttrName);
-
- /* Did it exist? */
- if (! bExists) {
- /* Nope. Create the table */
- QUERY_NOROWS(lsqlite3,
- FALSE,
- "CREATE TABLE ldb_attr_%q "
- "("
- " eid INTEGER REFERENCES ldb_entry, "
- " attr_value TEXT"
- ");",
- pAttrName);
- }
+ *module = talloc(ldb, struct ldb_module);
+ if (!module) {
+ ldb_oom(ldb);
+ goto failed;
+ }
+ talloc_set_name_const(*module, "ldb_sqlite3 backend");
+ (*module)->ldb = ldb;
+ (*module)->prev = (*module)->next = NULL;
+ (*module)->private_data = lsqlite3;
+ (*module)->ops = &lsqlite3_ops;
- return 0;
+ 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 0;
+
+failed:
+ if (lsqlite3->sqlite != NULL) {
+ (void) sqlite3_close(lsqlite3->sqlite);
+ }
+ talloc_free(lsqlite3);
+ return -1;
}
-
+const struct ldb_backend_ops ldb_sqlite3_backend_ops = {
+ .name = "sqlite3",
+ .connect_fn = lsqlite3_connect
+};
git.samba.org / kai / samba.git / blobdiff