From fc336590dc35f1737ddc74333b959bdd32ee22d3 Mon Sep 17 00:00:00 2001
From: Jelmer Vernooij <jelmer@samba.org>
Date: Thu, 6 May 2010 10:41:43 +0200
Subject: Remove the copy of ldb from Samba 3.

There were two utility functions that other parts of Samba 3
still relied on; they have been moved to lib/ldb_compat.[ch].
---
 source3/lib/ldb/modules/paged_results.c | 553 --------------------------------
 1 file changed, 553 deletions(-)
 delete mode 100644 source3/lib/ldb/modules/paged_results.c

(limited to 'source3/lib/ldb/modules/paged_results.c')

diff --git a/source3/lib/ldb/modules/paged_results.c b/source3/lib/ldb/modules/paged_results.c
deleted file mode 100644
index e16b710413..0000000000
--- a/source3/lib/ldb/modules/paged_results.c
+++ /dev/null
@@ -1,553 +0,0 @@
-/* 
-   ldb database library
-
-   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
-     ** 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: paged_result
- *
- *  Component: ldb paged results control module
- *
- *  Description: this module caches a complete search and sends back
- *  		 results in chunks as asked by the client
- *
- *  Author: Simo Sorce
- */
-
-#include "includes.h"
-#include "ldb/include/includes.h"
-
-struct message_store {
-	/* keep the whole ldb_reply as an optimization
-	 * instead of freeing and talloc-ing the container
-	 * on each result */
-	struct ldb_reply *r;
-	struct message_store *next;
-};
-
-struct private_data;
-
-struct results_store {
-
-	struct private_data *priv;
-
-	char *cookie;
-	time_t timestamp;
-
-	struct results_store *prev;
-	struct results_store *next;
-	
-	struct message_store *first;
-	struct message_store *last;
-	int num_entries;
-
-	struct message_store *first_ref;
-	struct message_store *last_ref;
-
-	struct ldb_control **controls;
-
-	struct ldb_request *req;
-};
-
-struct private_data {
-
-	int next_free_id;
-	struct results_store *store;
-	
-};
-
-int store_destructor(struct results_store *store);
-
-int store_destructor(struct results_store *store)
-{
-	DLIST_REMOVE(store->priv->store, store);
-	return 0;
-}
-
-static struct results_store *new_store(struct private_data *priv)
-{
-	struct results_store *newr;
-	int new_id = priv->next_free_id++;
-
-	/* TODO: we should have a limit on the number of
-	 * outstanding paged searches
-	 */
-
-	newr = talloc(priv, struct results_store);
-	if (!newr) return NULL;
-
-	newr->priv = priv;
-
-	newr->cookie = talloc_asprintf(newr, "%d", new_id);
-	if (!newr->cookie) {
-		talloc_free(newr);
-		return NULL;
-	}
-
-	newr->timestamp = time(NULL);
-
-	newr->first = NULL;
-	newr->num_entries = 0;
-	newr->first_ref = NULL;
-	newr->controls = NULL;
-
-	/* put this entry as first */
-	DLIST_ADD(priv->store, newr);
-
-	talloc_set_destructor(newr, store_destructor);
-
-	return newr;
-}
-
-struct paged_context {
-	struct ldb_module *module;
-	void *up_context;
-	int (*up_callback)(struct ldb_context *, void *, struct ldb_reply *);
-
-	int size;
-
-	struct results_store *store;
-};
-
-static struct ldb_handle *init_handle(void *mem_ctx, struct ldb_module *module,
-					    void *context,
-					    int (*callback)(struct ldb_context *, void *, struct ldb_reply *))
-{
-	struct paged_context *ac;
-	struct ldb_handle *h;
-
-	h = talloc_zero(mem_ctx, struct ldb_handle);
-	if (h == NULL) {
-		ldb_set_errstring(module->ldb, "Out of Memory");
-		return NULL;
-	}
-
-	h->module = module;
-
-	ac = talloc_zero(h, struct paged_context);
-	if (ac == NULL) {
-		ldb_set_errstring(module->ldb, "Out of Memory");
-		talloc_free(h);
-		return NULL;
-	}
-
-	h->private_data = (void *)ac;
-
-	h->state = LDB_ASYNC_INIT;
-	h->status = LDB_SUCCESS;
-
-	ac->module = module;
-	ac->up_context = context;
-	ac->up_callback = callback;
-
-	return h;
-}
-
-static int paged_search_callback(struct ldb_context *ldb, void *context, struct ldb_reply *ares)
-{
-	struct paged_context *ac = NULL;
-
-	if (!context || !ares) {
-		ldb_set_errstring(ldb, "NULL Context or Result in callback");
-		goto error;
-	}
-
-	ac = talloc_get_type(context, struct paged_context);
-
-	if (ares->type == LDB_REPLY_ENTRY) {
-		if (ac->store->first == NULL) {
-			ac->store->first = ac->store->last = talloc(ac->store, struct message_store);
-		} else {
-			ac->store->last->next = talloc(ac->store, struct message_store);
-			ac->store->last = ac->store->last->next;
-		}
-		if (ac->store->last == NULL) {
-			goto error;
-		}
-
-		ac->store->num_entries++;
-
-		ac->store->last->r = talloc_steal(ac->store->last, ares);
-		ac->store->last->next = NULL;
-	}
-
-	if (ares->type == LDB_REPLY_REFERRAL) {
-		if (ac->store->first_ref == NULL) {
-			ac->store->first_ref = ac->store->last_ref = talloc(ac->store, struct message_store);
-		} else {
-			ac->store->last_ref->next = talloc(ac->store, struct message_store);
-			ac->store->last_ref = ac->store->last_ref->next;
-		}
-		if (ac->store->last_ref == NULL) {
-			goto error;
-		}
-
-		ac->store->last_ref->r = talloc_steal(ac->store->last, ares);
-		ac->store->last_ref->next = NULL;
-	}
-
-	if (ares->type == LDB_REPLY_DONE) {
-		ac->store->controls = talloc_move(ac->store, &ares->controls);
-		talloc_free(ares);
-	}
-
-	return LDB_SUCCESS;
-
-error:
-	talloc_free(ares);
-	return LDB_ERR_OPERATIONS_ERROR;
-}
-
-static int paged_search(struct ldb_module *module, struct ldb_request *req)
-{
-	struct ldb_control *control;
-	struct private_data *private_data;
-	struct ldb_paged_control *paged_ctrl;
-	struct ldb_control **saved_controls;
-	struct paged_context *ac;
-	struct ldb_handle *h;
-	int ret;
-
-	/* check if there's a paged request control */
-	control = get_control_from_list(req->controls, LDB_CONTROL_PAGED_RESULTS_OID);
-	if (control == NULL) {
-		/* not found go on */
-		return ldb_next_request(module, req);
-	}
-
-	private_data = talloc_get_type(module->private_data, struct private_data);
-
-	req->handle = NULL;
-
-	if (!req->callback || !req->context) {
-		ldb_set_errstring(module->ldb,
-				  "Async interface called with NULL callback function or NULL context");
-		return LDB_ERR_OPERATIONS_ERROR;
-	}
-	
-	paged_ctrl = talloc_get_type(control->data, struct ldb_paged_control);
-	if (!paged_ctrl) {
-		return LDB_ERR_PROTOCOL_ERROR;
-	}
-
-	h = init_handle(req, module, req->context, req->callback);
-	if (!h) {
-		return LDB_ERR_OPERATIONS_ERROR;
-	}
-	ac = talloc_get_type(h->private_data, struct paged_context);
-
-	ac->size = paged_ctrl->size;
-
-	/* check if it is a continuation search the store */
-	if (paged_ctrl->cookie_len == 0) {
-		
-		ac->store = new_store(private_data);
-		if (ac->store == NULL) {
-			talloc_free(h);
-			return LDB_ERR_UNWILLING_TO_PERFORM;
-		}
-
-		ac->store->req = talloc(ac->store, struct ldb_request);
-		if (!ac->store->req)
-			return LDB_ERR_OPERATIONS_ERROR;
-
-		ac->store->req->operation = req->operation;
-		ac->store->req->op.search.base = req->op.search.base;
-		ac->store->req->op.search.scope = req->op.search.scope;
-		ac->store->req->op.search.tree = req->op.search.tree;
-		ac->store->req->op.search.attrs = req->op.search.attrs;
-		ac->store->req->controls = req->controls;
-
-		/* save it locally and remove it from the list */
-		/* we do not need to replace them later as we
-		 * are keeping the original req intact */
-		if (!save_controls(control, ac->store->req, &saved_controls)) {
-			return LDB_ERR_OPERATIONS_ERROR;
-		}
-
-		ac->store->req->context = ac;
-		ac->store->req->callback = paged_search_callback;
-		ldb_set_timeout_from_prev_req(module->ldb, req, ac->store->req);
-
-		ret = ldb_next_request(module, ac->store->req);
-
-	} else {
-		struct results_store *current = NULL;
-
-		for (current = private_data->store; current; current = current->next) {
-			if (strcmp(current->cookie, paged_ctrl->cookie) == 0) {
-				current->timestamp = time(NULL);
-				break;
-			}
-		}
-		if (current == NULL) {
-			talloc_free(h);
-			return LDB_ERR_UNWILLING_TO_PERFORM;
-		}
-
-		ac->store = current;
-		ret = LDB_SUCCESS;
-	}
-
-	req->handle = h;
-
-	/* check if it is an abandon */
-	if (ac->size == 0) {
-		talloc_free(ac->store);
-		h->status = LDB_SUCCESS;
-		h->state = LDB_ASYNC_DONE;
-		return LDB_SUCCESS;
-	}
-
-	/* TODO: age out old outstanding requests */
-
-	return ret;
-
-}
-
-static int paged_results(struct ldb_handle *handle)
-{
-	struct paged_context *ac;
-	struct ldb_paged_control *paged;
-	struct ldb_reply *ares;
-	struct message_store *msg;
-	int i, num_ctrls, ret;
-
-	ac = talloc_get_type(handle->private_data, struct paged_context);
-
-	if (ac->store == NULL)
-		return LDB_ERR_OPERATIONS_ERROR;
-
-	while (ac->store->num_entries > 0 && ac->size > 0) {
-		msg = ac->store->first;
-		ret = ac->up_callback(ac->module->ldb, ac->up_context, msg->r);
-		if (ret != LDB_SUCCESS) {
-			handle->status = ret;
-			handle->state = LDB_ASYNC_DONE;
-			return ret;
-		}
-
-		ac->store->first = msg->next;
-		talloc_free(msg);
-		ac->store->num_entries--;
-		ac->size--;
-	}
-
-	handle->state = LDB_ASYNC_DONE;
-
-	while (ac->store->first_ref != NULL) {
-		msg = ac->store->first_ref;
-		ret = ac->up_callback(ac->module->ldb, ac->up_context, msg->r);
-		if (ret != LDB_SUCCESS) {
-			handle->status = ret;
-			handle->state = LDB_ASYNC_DONE;
-			return ret;
-		}
-
-		ac->store->first_ref = msg->next;
-		talloc_free(msg);
-	}
-
-	ares = talloc_zero(ac->store, struct ldb_reply);
-	if (ares == NULL) {
-		handle->status = LDB_ERR_OPERATIONS_ERROR;
-		return handle->status;
-	}
-	num_ctrls = 2;
-	i = 0;
-
-	if (ac->store->controls != NULL) {
-		ares->controls = ac->store->controls;
-		while (ares->controls[i]) i++; /* counting */
-
-		ares->controls = talloc_move(ares, &ac->store->controls);
-		num_ctrls += i;
-	}
-
-	ares->controls = talloc_realloc(ares, ares->controls, struct ldb_control *, num_ctrls);
-	if (ares->controls == NULL) {
-		handle->status = LDB_ERR_OPERATIONS_ERROR;
-		return handle->status;
-	}
-
-	ares->controls[i] = talloc(ares->controls, struct ldb_control);
-	if (ares->controls[i] == NULL) {
-		handle->status = LDB_ERR_OPERATIONS_ERROR;
-		return handle->status;
-	}
-
-	ares->controls[i]->oid = talloc_strdup(ares->controls[i], LDB_CONTROL_PAGED_RESULTS_OID);
-	if (ares->controls[i]->oid == NULL) {
-		handle->status = LDB_ERR_OPERATIONS_ERROR;
-		return handle->status;
-	}
-		
-	ares->controls[i]->critical = 0;
-	ares->controls[i + 1] = NULL;
-
-	paged = talloc(ares->controls[i], struct ldb_paged_control);
-	if (paged == NULL) {
-		handle->status = LDB_ERR_OPERATIONS_ERROR;
-		return handle->status;
-	}
-	
-	ares->controls[i]->data = paged;
-
-	if (ac->size > 0) {
-		paged->size = 0;
-		paged->cookie = NULL;
-		paged->cookie_len = 0;
-	} else {
-		paged->size = ac->store->num_entries;
-		paged->cookie = talloc_strdup(paged, ac->store->cookie);
-		paged->cookie_len = strlen(paged->cookie) + 1;
-	}
-
-	ares->type = LDB_REPLY_DONE;
-
-	ret = ac->up_callback(ac->module->ldb, ac->up_context, ares);
-
-	handle->status = ret;
-
-	return ret;
-}
-
-static int paged_wait(struct ldb_handle *handle, enum ldb_wait_type type)
-{
-	struct paged_context *ac;
-	int ret;
-    
-	if (!handle || !handle->private_data) {
-		return LDB_ERR_OPERATIONS_ERROR;
-	}
-
-	if (handle->state == LDB_ASYNC_DONE) {
-		return handle->status;
-	}
-
-	handle->state = LDB_ASYNC_PENDING;
-
-	ac = talloc_get_type(handle->private_data, struct paged_context);
-
-	if (ac->store->req->handle->state == LDB_ASYNC_DONE) {
-		/* if lower level is finished we do not need to call it anymore */
-		/* return all we have until size == 0 or we empty storage */
-		ret = paged_results(handle);
-
-		/* we are done, if num_entries is zero free the storage
-		 * as that mean we delivered the last batch */
-		if (ac->store->num_entries == 0) {
-			talloc_free(ac->store);
-		}
-
-		return ret;
-	}
-
-	if (type == LDB_WAIT_ALL) {
-		while (ac->store->req->handle->state != LDB_ASYNC_DONE) {
-			ret = ldb_wait(ac->store->req->handle, type);
-			if (ret != LDB_SUCCESS) {
-				handle->state = LDB_ASYNC_DONE;
-				handle->status = ret;
-				return ret;
-			}
-		}
-
-		ret = paged_results(handle);
-
-		/* we are done, if num_entries is zero free the storage
-		 * as that mean we delivered the last batch */
-		if (ac->store->num_entries == 0) {
-			talloc_free(ac->store);
-		}
-
-		return ret;
-	}
-
-	ret = ldb_wait(ac->store->req->handle, type);
-	if (ret != LDB_SUCCESS) {
-		handle->state = LDB_ASYNC_DONE;
-		handle->status = ret;
-		return ret;
-	}
-
-	handle->status = ret;
-
-	if (ac->store->num_entries >= ac->size ||
-	    ac->store->req->handle->state == LDB_ASYNC_DONE) {
-
-		ret = paged_results(handle);
-
-		/* we are done, if num_entries is zero free the storage
-		 * as that mean we delivered the last batch */
-		if (ac->store->num_entries == 0) {
-			talloc_free(ac->store);
-		}
-	}
-
-	return ret;
-}
-
-static int paged_request_init(struct ldb_module *module)
-{
-	struct private_data *data;
-	struct ldb_request *req;
-	int ret;
-
-	data = talloc(module, struct private_data);
-	if (data == NULL) {
-		return LDB_ERR_OTHER;
-	}
-	
-	data->next_free_id = 1;
-	data->store = NULL;
-	module->private_data = data;
-
-	req = talloc(module, struct ldb_request);
-	if (req == NULL) {
-		return LDB_ERR_OPERATIONS_ERROR;
-	}
-
-	req->operation = LDB_REQ_REGISTER_CONTROL;
-	req->op.reg_control.oid = LDB_CONTROL_PAGED_RESULTS_OID;
-	req->controls = NULL;
-
-	ret = ldb_request(module->ldb, req);
-	if (ret != LDB_SUCCESS) {
-		ldb_debug(module->ldb, LDB_DEBUG_WARNING, "paged_request: Unable to register control with rootdse!\n");
-	}
-
-	talloc_free(req);
-	return ldb_next_init(module);
-}
-
-static const struct ldb_module_ops paged_ops = {
-	.name           = "paged_results",
-	.search         = paged_search,
-	.wait           = paged_wait,
-	.init_context 	= paged_request_init
-};
-
-int ldb_paged_results_init(void)
-{
-	return ldb_register_module(&paged_ops);
-}
-
-- 
cgit