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Diffstat (limited to 'source4/lib/ldb/ldb_sqlite3/ldb_sqlite3.c')
-rw-r--r--source4/lib/ldb/ldb_sqlite3/ldb_sqlite3.c1907
1 files changed, 1907 insertions, 0 deletions
diff --git a/source4/lib/ldb/ldb_sqlite3/ldb_sqlite3.c b/source4/lib/ldb/ldb_sqlite3/ldb_sqlite3.c
new file mode 100644
index 0000000000..8acbac4cc3
--- /dev/null
+++ b/source4/lib/ldb/ldb_sqlite3/ldb_sqlite3.c
@@ -0,0 +1,1907 @@
+/*
+ ldb database library
+
+ Copyright (C) Derrell Lipman 2005
+ Copyright (C) Simo Sorce 2005-2009
+
+ ** 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 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
+ 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, see <http://www.gnu.org/licenses/>.
+*/
+
+/*
+ * Name: ldb
+ *
+ * Component: ldb sqlite3 backend
+ *
+ * Description: core files for SQLITE3 backend
+ *
+ * Author: Derrell Lipman (based on Andrew Tridgell's LDAP backend)
+ */
+
+#include "ldb_module.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;
+
+ bool callback_failed;
+ struct tevent_timer *timeout_event;
+};
+
+/*
+ * Macros used throughout
+ */
+
+#ifndef FALSE
+# define FALSE (0)
+# define TRUE (! FALSE)
+#endif
+
+#define RESULT_ATTR_TABLE "temp_result_attrs"
+
+
+/* for testing, define to nothing, (create non-temporary table) */
+#define TEMPTAB "TEMPORARY"
+
+/*
+ * Static variables
+ */
+sqlite3_stmt * stmtGetEID = NULL;
+
+static char *lsqlite3_tprintf(TALLOC_CTX *mem_ctx, const char *fmt, ...)
+{
+ char *str, *ret;
+ va_list ap;
+
+ va_start(ap, fmt);
+ str = sqlite3_vmprintf(fmt, ap);
+ va_end(ap);
+
+ if (str == NULL) return NULL;
+
+ ret = talloc_strdup(mem_ctx, str);
+ if (ret == NULL) {
+ sqlite3_free(str);
+ return NULL;
+ }
+
+ sqlite3_free(str);
+ return ret;
+}
+
+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'
+};
+
+
+/*
+ * 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];
+
+ val = sqlite3_value_int64(argv[0]);
+
+ for (i = 3; i >= 0; i--) {
+
+ result[i] = base160tab[val % 160];
+ val /= 160;
+ }
+
+ result[4] = '\0';
+
+ sqlite3_result_text(hContext, result, -1, SQLITE_TRANSIENT);
+}
+
+
+/*
+ * 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;
+
+ /*
+ * 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) {
+
+ if (pBase160 == NULL) {
+
+ sqlite3_result_null(hContext);
+ return;
+ }
+
+ 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) {
+
+ /*
+ * 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);
+ }
+ }
+}
+
+static char *parsetree_to_sql(struct ldb_module *module,
+ void *mem_ctx,
+ const struct ldb_parse_tree *t)
+{
+ struct ldb_context *ldb;
+ 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 = ldb_module_get_ctx(module);
+
+ switch(t->operation) {
+ case LDB_OP_AND:
+
+ 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, " INTERSECT %s ", child);
+ if (tmp == NULL) return NULL;
+ }
+
+ ret = talloc_asprintf(mem_ctx, "SELECT * FROM ( %s )\n", tmp);
+
+ 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;
+ }
+
+ 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(ldb, attr);
+
+ /* Get a canonicalised copy of the data */
+ a->syntax->canonicalise_fn(ldb, mem_ctx, &(t->u.equality.value), &value);
+ if (value.data == NULL) {
+ return NULL;
+ }
+
+ 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, 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);
+
+ }
+
+ case LDB_OP_SUBSTRING:
+
+ wild_card_string = talloc_strdup(mem_ctx,
+ (t->u.substring.start_with_wildcard)?"*":"");
+ if (wild_card_string == NULL) return NULL;
+
+ 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;
+ }
+
+ if ( ! t->u.substring.end_with_wildcard ) {
+ /* remove last wildcard */
+ wild_card_string[strlen(wild_card_string) - 1] = '\0';
+ }
+
+ attr = ldb_attr_casefold(mem_ctx, t->u.substring.attr);
+ if (attr == NULL) return NULL;
+ a = ldb_schema_attribute_by_name(ldb, attr);
+
+ subval.data = (void *)wild_card_string;
+ subval.length = strlen(wild_card_string) + 1;
+
+ /* Get a canonicalised copy of the data */
+ a->syntax->canonicalise_fn(ldb, mem_ctx, &(subval), &value);
+ if (value.data == NULL) {
+ return NULL;
+ }
+
+ 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(ldb, attr);
+
+ /* Get a canonicalised copy of the data */
+ a->syntax->canonicalise_fn(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_LESS:
+ attr = ldb_attr_casefold(mem_ctx, t->u.equality.attr);
+ if (attr == NULL) return NULL;
+ a = ldb_schema_attribute_by_name(ldb, attr);
+
+ /* Get a canonicalised copy of the data */
+ a->syntax->canonicalise_fn(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_PRESENT:
+ if (strcasecmp(t->u.present.attr, "dn") == 0) {
+ return talloc_strdup(mem_ctx, "SELECT eid FROM ldb_entry");
+ }
+
+ attr = ldb_attr_casefold(mem_ctx, t->u.present.attr);
+ if (attr == NULL) return NULL;
+
+ 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(ldb, attr);
+
+ /* Get a canonicalised copy of the data */
+ a->syntax->canonicalise_fn(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;
+ };
+
+ /* 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,
+ p,
+ -1,
+ &pStmt,
+ NULL)) == SQLITE_SCHEMA) {
+ if (stmtGetEID != NULL) {
+ sqlite3_finalize(stmtGetEID);
+ stmtGetEID = NULL;
+ }
+ continue;
+ } else if (ret != SQLITE_OK) {
+ break;
+ }
+
+ /* One row expected */
+ if ((ret = sqlite3_step(pStmt)) == SQLITE_SCHEMA) {
+ if (stmtGetEID != NULL) {
+ sqlite3_finalize(stmtGetEID);
+ stmtGetEID = NULL;
+ }
+ (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) {
+ if (stmtGetEID != NULL) {
+ sqlite3_finalize(stmtGetEID);
+ stmtGetEID = NULL;
+ }
+ 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;
+}
+
+/*
+ * 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
+ */
+
+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 = (uint8_t *)cmp;
+ valX.length = strlen(cmp);
+ valY.data = (uint8_t *)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 = (uint8_t *)cmp;
+ valX.length = strlen(cmp);
+ valY.data = (uint8_t *)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;
+ }
+
+ sqlite3_result_error(ctx, "Value must start with a special operation char (<>~:)!", -1);
+ return;
+}
+
+
+/* rename a record */
+static int lsqlite3_safe_rollback(sqlite3 *sqlite)
+{
+ char *errmsg;
+ int ret;
+
+ /* 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;
+ }
+
+ return 0;
+}
+
+/* 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;
+
+ if (col_num != 1) return SQLITE_ABORT;
+ if (strcasecmp(names[0], "eid") != 0) return SQLITE_ABORT;
+
+ *eid = atoll(cols[0]);
+ return SQLITE_OK;
+}
+
+/*
+ * 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 ldb_context *ldb;
+ struct lsql_context *ac;
+ struct ldb_message *msg;
+ long long eid;
+ int i, ret;
+
+ ac = talloc_get_type(result, struct lsql_context);
+ ldb = ldb_module_get_ctx(ac->module);
+
+ /* eid, dn, attr_name, attr_value */
+ if (col_num != 4) return SQLITE_ABORT;
+
+ eid = atoll(cols[0]);
+
+ if (ac->ares) {
+ msg = ac->ares->message;
+ }
+
+ 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) {
+ msg = ldb_msg_canonicalize(ldb, msg);
+ if (!msg) return SQLITE_ABORT;
+
+ ret = ldb_module_send_entry(ac->req, msg, NULL);
+ if (ret != LDB_SUCCESS) {
+ ac->callback_failed = true;
+ return SQLITE_ABORT;
+ }
+ }
+
+ /* start over */
+ ac->ares = talloc_zero(ac, struct ldb_reply);
+ if (!ac->ares) return SQLITE_ABORT;
+
+ msg = ldb_msg_new(ac->ares);
+ if (!msg) return SQLITE_ABORT;
+
+ ac->ares->type = LDB_REPLY_ENTRY;
+ ac->current_eid = eid;
+ }
+
+ if (msg->dn == NULL) {
+ msg->dn = ldb_dn_new(msg, ldb, cols[1]);
+ if (msg->dn == NULL)
+ return SQLITE_ABORT;
+ }
+
+ 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) goto done;
+ }
+
+ if (ldb_msg_add_string(msg, cols[2], cols[3]) != 0) {
+ return SQLITE_ABORT;
+ }
+
+done:
+ ac->ares->message = msg;
+ return SQLITE_OK;
+}
+
+
+/*
+ * 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)
+{
+ 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;
+ }
+
+ return eid;
+}
+
+static long long lsqlite3_get_eid(struct lsqlite3_private *lsqlite3,
+ struct ldb_dn *dn)
+{
+ TALLOC_CTX *local_ctx;
+ long long eid = -1;
+ char *cdn;
+
+ /* 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;
+}
+
+/*
+ * Interface functions referenced by lsqlite3_ops
+ */
+
+/* search for matching records, by tree */
+int lsql_search(struct lsql_context *ctx)
+{
+ struct ldb_module *module = ctx->module;
+ struct ldb_request *req = ctx->req;
+ struct lsqlite3_private *lsqlite3;
+ struct ldb_context *ldb;
+ char *norm_basedn;
+ char *sqlfilter;
+ char *errmsg;
+ char *query = NULL;
+ int ret;
+
+ ldb = ldb_module_get_ctx(module);
+ lsqlite3 = talloc_get_type(ldb_module_get_private(module),
+ struct lsqlite3_private);
+
+ 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(ctx, req->op.search.base);
+ if (norm_basedn == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ } else norm_basedn = talloc_strdup(ctx, "");
+
+ /* Convert filter into a series of SQL conditions (constraints) */
+ sqlfilter = parsetree_to_sql(module, ctx, req->op.search.tree);
+
+ switch(req->op.search.scope) {
+ case LDB_SCOPE_DEFAULT:
+ case LDB_SCOPE_SUBTREE:
+ if (*norm_basedn != '\0') {
+ query = lsqlite3_tprintf(ctx,
+ "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(ctx,
+ "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(ctx,
+ "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 = '%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(ctx,
+ "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 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;
+ }
+
+ if (query == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ /* * /
+ printf ("%s\n", query);
+ / * */
+
+ ctx->current_eid = 0;
+ ctx->attrs = req->op.search.attrs;
+ ctx->ares = NULL;
+
+ ldb_request_set_state(req, LDB_ASYNC_PENDING);
+
+ ret = sqlite3_exec(lsqlite3->sqlite, query, lsqlite3_search_callback, ctx, &errmsg);
+ if (ret != SQLITE_OK) {
+ if (errmsg) {
+ ldb_set_errstring(ldb, errmsg);
+ free(errmsg);
+ }
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ /* complete the last message if any */
+ if (ctx->ares) {
+ ctx->ares->message = ldb_msg_canonicalize(ldb, ctx->ares->message);
+ if (ctx->ares->message == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ ret = ldb_module_send_entry(req, ctx->ares->message, NULL);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+ }
+
+
+ return LDB_SUCCESS;
+}
+
+/* add a record */
+static int lsql_add(struct lsql_context *ctx)
+{
+ struct ldb_module *module = ctx->module;
+ struct ldb_request *req = ctx->req;
+ struct lsqlite3_private *lsqlite3;
+ struct ldb_context *ldb;
+ struct ldb_message *msg = req->op.add.message;
+ long long eid;
+ char *dn, *ndn;
+ char *errmsg;
+ char *query;
+ int i;
+ int ret;
+
+ ldb = ldb_module_get_ctx(module);
+ lsqlite3 = talloc_get_type(ldb_module_get_private(module),
+ struct lsqlite3_private);
+
+ /* See if this is an ltdb special */
+ if (ldb_dn_is_special(msg->dn)) {
+/*
+ struct ldb_dn *c;
+ c = ldb_dn_new(local_ctx, ldb, "@INDEXLIST");
+ if (ldb_dn_compare(ldb, msg->dn, c) == 0) {
+#warning "should we handle indexes somehow ?"
+ ret = LDB_ERR_UNWILLING_TO_PERFORM;
+ goto done;
+ }
+*/
+ /* Others return an error */
+ return LDB_ERR_UNWILLING_TO_PERFORM;
+ }
+
+ /* create linearized and normalized dns */
+ dn = ldb_dn_alloc_linearized(ctx, msg->dn);
+ ndn = ldb_dn_alloc_casefold(ctx, msg->dn);
+ if (dn == NULL || ndn == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ query = lsqlite3_tprintf(ctx,
+ /* Add new entry */
+ "INSERT OR ABORT INTO ldb_entry "
+ "('dn', 'norm_dn') "
+ "VALUES ('%q', '%q');",
+ dn, ndn);
+ if (query == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ ret = sqlite3_exec(lsqlite3->sqlite, query, NULL, NULL, &errmsg);
+ if (ret != SQLITE_OK) {
+ if (errmsg) {
+ ldb_set_errstring(ldb, errmsg);
+ free(errmsg);
+ }
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ eid = lsqlite3_get_eid_ndn(lsqlite3->sqlite, ctx, ndn);
+ if (eid == -1) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ 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(ctx, el->name);
+ if (attr == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ a = ldb_schema_attribute_by_name(ldb, el->name);
+
+ /* 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(ldb, ctx, &(el->values[j]), &value);
+ if (value.data == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ insert = lsqlite3_tprintf(ctx,
+ "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) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ ret = sqlite3_exec(lsqlite3->sqlite, insert, NULL, NULL, &errmsg);
+ if (ret != SQLITE_OK) {
+ if (errmsg) {
+ ldb_set_errstring(ldb, errmsg);
+ free(errmsg);
+ }
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ }
+ }
+
+ return LDB_SUCCESS;
+}
+
+/* modify a record */
+static int lsql_modify(struct lsql_context *ctx)
+{
+ struct ldb_module *module = ctx->module;
+ struct ldb_request *req = ctx->req;
+ struct lsqlite3_private *lsqlite3;
+ struct ldb_context *ldb;
+ struct ldb_message *msg = req->op.mod.message;
+ long long eid;
+ char *errmsg;
+ int i;
+ int ret;
+
+ ldb = ldb_module_get_ctx(module);
+ lsqlite3 = talloc_get_type(ldb_module_get_private(module),
+ struct lsqlite3_private);
+
+ /* See if this is an ltdb special */
+ if (ldb_dn_is_special(msg->dn)) {
+ /* Others return an error */
+ return LDB_ERR_UNWILLING_TO_PERFORM;
+ }
+
+ eid = lsqlite3_get_eid(lsqlite3, msg->dn);
+ if (eid == -1) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ 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(ctx, el->name);
+ if (attr == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ a = ldb_schema_attribute_by_name(ldb, el->name);
+
+ switch (flags) {
+
+ case LDB_FLAG_MOD_REPLACE:
+
+ /* remove all attributes before adding the replacements */
+ mod = lsqlite3_tprintf(ctx,
+ "DELETE FROM ldb_attribute_values "
+ "WHERE eid = '%lld' "
+ "AND norm_attr_name = '%q';",
+ eid, attr);
+ if (mod == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ ret = sqlite3_exec(lsqlite3->sqlite, mod, NULL, NULL, &errmsg);
+ if (ret != SQLITE_OK) {
+ if (errmsg) {
+ ldb_set_errstring(ldb, errmsg);
+ free(errmsg);
+ }
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ /* 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(ldb, ctx, &(el->values[j]), &value);
+ if (value.data == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ mod = lsqlite3_tprintf(ctx,
+ "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) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ ret = sqlite3_exec(lsqlite3->sqlite, mod, NULL, NULL, &errmsg);
+ if (ret != SQLITE_OK) {
+ if (errmsg) {
+ ldb_set_errstring(ldb, errmsg);
+ free(errmsg);
+ }
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ }
+
+ break;
+
+ 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(ctx,
+ "DELETE FROM ldb_attribute_values "
+ "WHERE eid = '%lld' "
+ "AND norm_attr_name = '%q';",
+ eid, attr);
+ if (mod == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ ret = sqlite3_exec(lsqlite3->sqlite, mod, NULL, NULL, &errmsg);
+ if (ret != SQLITE_OK) {
+ if (errmsg) {
+ ldb_set_errstring(ldb, errmsg);
+ free(errmsg);
+ }
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ }
+
+ /* 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(ldb, ctx, &(el->values[j]), &value);
+ if (value.data == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ mod = lsqlite3_tprintf(ctx,
+ "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) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ ret = sqlite3_exec(lsqlite3->sqlite, mod, NULL, NULL, &errmsg);
+ if (ret != SQLITE_OK) {
+ if (errmsg) {
+ ldb_set_errstring(ldb, errmsg);
+ free(errmsg);
+ }
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ }
+
+ break;
+ }
+ }
+
+ return LDB_SUCCESS;
+}
+
+/* delete a record */
+static int lsql_delete(struct lsql_context *ctx)
+{
+ struct ldb_module *module = ctx->module;
+ struct ldb_request *req = ctx->req;
+ struct lsqlite3_private *lsqlite3;
+ struct ldb_context *ldb;
+ long long eid;
+ char *errmsg;
+ char *query;
+ int ret;
+
+ ldb = ldb_module_get_ctx(module);
+ lsqlite3 = talloc_get_type(ldb_module_get_private(module),
+ struct lsqlite3_private);
+
+ eid = lsqlite3_get_eid(lsqlite3, req->op.del.dn);
+ if (eid == -1) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ query = lsqlite3_tprintf(ctx,
+ /* Delete entry */
+ "DELETE FROM ldb_entry WHERE eid = %lld; "
+ /* Delete attributes */
+ "DELETE FROM ldb_attribute_values WHERE eid = %lld; ",
+ eid, eid);
+ if (query == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ ret = sqlite3_exec(lsqlite3->sqlite, query, NULL, NULL, &errmsg);
+ if (ret != SQLITE_OK) {
+ if (errmsg) {
+ ldb_set_errstring(ldb, errmsg);
+ free(errmsg);
+ }
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ return LDB_SUCCESS;
+}
+
+/* rename a record */
+static int lsql_rename(struct lsql_context *ctx)
+{
+ struct ldb_module *module = ctx->module;
+ struct ldb_request *req = ctx->req;
+ struct lsqlite3_private *lsqlite3;
+ struct ldb_context *ldb;
+ char *new_dn, *new_cdn, *old_cdn;
+ char *errmsg;
+ char *query;
+ int ret;
+
+ ldb = ldb_module_get_ctx(module);
+ lsqlite3 = talloc_get_type(ldb_module_get_private(module),
+ struct lsqlite3_private);
+
+ /* create linearized and normalized dns */
+ old_cdn = ldb_dn_alloc_casefold(ctx, req->op.rename.olddn);
+ new_cdn = ldb_dn_alloc_casefold(ctx, req->op.rename.newdn);
+ new_dn = ldb_dn_alloc_linearized(ctx, req->op.rename.newdn);
+ if (old_cdn == NULL || new_cdn == NULL || new_dn == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ /* build the SQL query */
+ query = lsqlite3_tprintf(ctx,
+ "UPDATE ldb_entry SET dn = '%q', norm_dn = '%q' "
+ "WHERE norm_dn = '%q';",
+ new_dn, new_cdn, old_cdn);
+ if (query == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ /* execute */
+ ret = sqlite3_exec(lsqlite3->sqlite, query, NULL, NULL, &errmsg);
+ if (ret != SQLITE_OK) {
+ if (errmsg) {
+ ldb_set_errstring(ldb, errmsg);
+ free(errmsg);
+ }
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ return LDB_SUCCESS;
+}
+
+static int lsql_start_trans(struct ldb_module * module)
+{
+ int ret;
+ char *errmsg;
+ struct lsqlite3_private *lsqlite3;
+
+ lsqlite3 = talloc_get_type(ldb_module_get_private(module),
+ struct lsqlite3_private);
+
+ 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++;
+
+ return 0;
+}
+
+static int lsql_end_trans(struct ldb_module *module)
+{
+ int ret;
+ char *errmsg;
+ struct lsqlite3_private *lsqlite3;
+
+ lsqlite3 = talloc_get_type(ldb_module_get_private(module),
+ struct lsqlite3_private);
+
+ 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;
+ }
+ }
+
+ return 0;
+}
+
+static int lsql_del_trans(struct ldb_module *module)
+{
+ struct lsqlite3_private *lsqlite3;
+
+ lsqlite3 = talloc_get_type(ldb_module_get_private(module),
+ struct lsqlite3_private);
+
+ if (lsqlite3->trans_count > 0) {
+ lsqlite3->trans_count--;
+ } else return -1;
+
+ if (lsqlite3->trans_count == 0) {
+ return lsqlite3_safe_rollback(lsqlite3->sqlite);
+ }
+
+ return -1;
+}
+
+static int destructor(struct lsqlite3_private *lsqlite3)
+{
+ if (lsqlite3->sqlite) {
+ sqlite3_close(lsqlite3->sqlite);
+ }
+ return 0;
+}
+
+static void lsql_request_done(struct lsql_context *ctx, int error)
+{
+ struct ldb_context *ldb;
+ struct ldb_request *req;
+ struct ldb_reply *ares;
+
+ ldb = ldb_module_get_ctx(ctx->module);
+ req = ctx->req;
+
+ /* if we already returned an error just return */
+ if (ldb_request_get_status(req) != LDB_SUCCESS) {
+ return;
+ }
+
+ ares = talloc_zero(req, struct ldb_reply);
+ if (!ares) {
+ ldb_oom(ldb);
+ req->callback(req, NULL);
+ return;
+ }
+ ares->type = LDB_REPLY_DONE;
+ ares->error = error;
+
+ req->callback(req, ares);
+}
+
+static void lsql_timeout(struct tevent_context *ev,
+ struct tevent_timer *te,
+ struct timeval t,
+ void *private_data)
+{
+ struct lsql_context *ctx;
+ ctx = talloc_get_type(private_data, struct lsql_context);
+
+ lsql_request_done(ctx, LDB_ERR_TIME_LIMIT_EXCEEDED);
+}
+
+static void lsql_callback(struct tevent_context *ev,
+ struct tevent_timer *te,
+ struct timeval t,
+ void *private_data)
+{
+ struct lsql_context *ctx;
+ int ret;
+
+ ctx = talloc_get_type(private_data, struct lsql_context);
+
+ switch (ctx->req->operation) {
+ case LDB_SEARCH:
+ ret = lsql_search(ctx);
+ break;
+ case LDB_ADD:
+ ret = lsql_add(ctx);
+ break;
+ case LDB_MODIFY:
+ ret = lsql_modify(ctx);
+ break;
+ case LDB_DELETE:
+ ret = lsql_delete(ctx);
+ break;
+ case LDB_RENAME:
+ ret = lsql_rename(ctx);
+ break;
+/* TODO:
+ case LDB_EXTENDED:
+ ret = lsql_extended(ctx);
+ break;
+ */
+ default:
+ /* no other op supported */
+ ret = LDB_ERR_UNWILLING_TO_PERFORM;
+ }
+
+ if (!ctx->callback_failed) {
+ /* Once we are done, we do not need timeout events */
+ talloc_free(ctx->timeout_event);
+ lsql_request_done(ctx, ret);
+ }
+}
+
+static int lsql_handle_request(struct ldb_module *module, struct ldb_request *req)
+{
+ struct ldb_context *ldb;
+ struct tevent_context *ev;
+ struct lsql_context *ac;
+ struct tevent_timer *te;
+ struct timeval tv;
+
+ if (check_critical_controls(req->controls)) {
+ return LDB_ERR_UNSUPPORTED_CRITICAL_EXTENSION;
+ }
+
+ if (req->starttime == 0 || req->timeout == 0) {
+ ldb_set_errstring(ldb, "Invalid timeout settings");
+ return LDB_ERR_TIME_LIMIT_EXCEEDED;
+ }
+
+ ldb = ldb_module_get_ctx(module);
+ ev = ldb_get_event_context(ldb);
+
+ ac = talloc_zero(req, struct lsql_context);
+ if (ac == NULL) {
+ ldb_set_errstring(ldb, "Out of Memory");
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ ac->module = module;
+ ac->req = req;
+
+ tv.tv_sec = 0;
+ tv.tv_usec = 0;
+ te = tevent_add_timer(ev, ac, tv, lsql_callback, ac);
+ if (NULL == te) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ tv.tv_sec = req->starttime + req->timeout;
+ ac->timeout_event = tevent_add_timer(ev, ac, tv, lsql_timeout, ac);
+ if (NULL == ac->timeout_event) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ return LDB_SUCCESS;
+}
+
+/*
+ * Table of operations for the sqlite3 backend
+ */
+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,
+ .extended = lsql_handle_request,
+ .start_transaction = lsql_start_trans,
+ .end_transaction = lsql_end_trans,
+ .del_transaction = lsql_del_trans,
+};
+
+/*
+ * Static functions
+ */
+
+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;
+ }
+
+ 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"
+ ");"
+
+
+ "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);"
+
+
+
+ /*
+ * 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;"
+
+ /*
+ * Table initialization
+ */
+
+ "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;
+ }
+
+ 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;
+ }
+
+ /* 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;
+ }
+
+ /* 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;
+ }
+
+ /* 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) {
+ /*
+ * Create the database schema
+ */
+ 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;
+ }
+ }
+
+ /* 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;
+
+failed:
+ if (rollback) lsqlite3_safe_rollback(lsqlite3->sqlite);
+ sqlite3_close(lsqlite3->sqlite);
+ return -1;
+}
+
+/*
+ * 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)
+{
+ struct ldb_module *module;
+ struct lsqlite3_private *lsqlite3;
+ int i, ret;
+
+ module = ldb_module_new(ldb, ldb, "ldb_sqlite3 backend", &lsqlite3_ops);
+ if (!module) return -1;
+
+ lsqlite3 = talloc(module, 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);
+
+ ldb_module_set_private(module, lsqlite3);
+
+ 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;
+ }
+ }
+ }
+
+ *_module = module;
+ return 0;
+
+failed:
+ if (lsqlite3 && 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
+};
generated by cgit v1.2.3 (git 2.39.1) at 2025-04-26 20:26:27 +0000