/*
 * Copyright 2013 Red Hat, Inc.
 *
 * This Program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License.
 *
 * This Program 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
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this Program; if not, write to the
 *
 *   Free Software Foundation, Inc.
 *   59 Temple Place, Suite 330
 *   Boston, MA 02111-1307 USA
 *
 */

#ifndef back_sch_h
#define back_sch_h

enum sch_search_nsswitch_t {
	SCH_NSSWITCH_NONE = 0,
	SCH_NSSWITCH_USER,
	SCH_NSSWITCH_GROUP
};

/* The data we ask the map cache to keep, for us, for each set. */
struct backend_set_data {
	struct backend_shr_set_data common;
	/* Schema compatibility-specific data. */
	Slapi_DN *container_sdn;
	char *rdn_format;
	char **attribute_format;
	bool_t check_access;
	enum sch_search_nsswitch_t check_nsswitch;
	unsigned long nsswitch_min_id;
};

struct backend_entry_data {
	Slapi_DN *original_entry_dn;
	enum backend_entry_source {
		backend_entry_source_dit,
		backend_entry_source_nsswitch
	} source;
	Slapi_Entry *e;
};

struct backend_staged_search {
	struct backend_staged_search *next;
	char *map_group, *map_set;
	struct backend_set_data *set_data;
	enum sch_search_nsswitch_t type;
	bool_t is_id;
	bool_t search_members;
	char *name;
	char *container_sdn;
	int count;
	Slapi_Entry **entries;
};

/* Intercept a search request, and if it belongs to one of our compatibility
 * trees, answer from our cache before letting the default database have a
 * crack at it. */
struct backend_search_cbdata {
	Slapi_PBlock *pb;
	struct plugin_state *state;
	char *target, *strfilter, **attrs;
	int scope, sizelimit, timelimit, attrsonly;
	bool_t check_access;
	enum sch_search_nsswitch_t check_nsswitch;
	Slapi_DN *target_dn;
	Slapi_Filter *filter;
	unsigned long nsswitch_min_id;
	char *nsswitch_buffer;
	ssize_t nsswitch_buffer_len;

	bool_t answer;
	int result;
	bool_t matched;
	char *closest_match, *text;
	int n_entries;
	struct backend_staged_search *staged;
	struct backend_staged_search *cur_staged;
};

void backend_search_nsswitch(struct backend_set_data *set_data,
			     struct backend_search_cbdata *cbdata);

bool_t backend_retrieve_from_nsswitch(struct backend_staged_search *staged,
				      struct backend_search_cbdata *cbdata);

int backend_sch_do_pam_auth(Slapi_PBlock *pb, const char *username);

#endif