/* config.h - configuration abstraction structure */
/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
 *
 * Copyright 1998-2020 The OpenLDAP Foundation.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted only as authorized by the OpenLDAP
 * Public License.
 *
 * A copy of this license is available in the file LICENSE in the
 * top-level directory of the distribution or, alternatively, at
 * <http://www.OpenLDAP.org/license.html>.
 */

#ifndef CONFIG_H
#define CONFIG_H

#include <ac/string.h>

LDAP_BEGIN_DECL

typedef struct ConfigTable {
    const char *name;
    const char *what;
    int min_args;
    int max_args;
    int length;
    unsigned int arg_type;
    void *arg_item;
} ConfigTable;

/* search entries are returned according to this order */
typedef enum {
    Cft_Abstract = 0,
    Cft_Global,
    Cft_Module,
    Cft_Schema,
    Cft_Backend,
    Cft_Database,
    Cft_Overlay,
    Cft_Misc /* backend/overlay defined */
} ConfigType;

#define ARGS_USERLAND 0x00000fff

/* types are enumerated, not a bitmask */
#define ARGS_TYPES 0x0000f000
#define ARG_INT 0x00001000
#define ARG_LONG 0x00002000
#define ARG_BER_LEN_T 0x00003000
#define ARG_ON_OFF 0x00004000
#define ARG_STRING 0x00005000
#define ARG_BERVAL 0x00006000
#define ARG_UINT 0x00008000
#define ARG_ULONG 0x0000a000
#define ARG_BINARY 0x0000b000

#define ARGS_SYNTAX 0xffff0000
#define ARG_IGNORED 0x00080000
#define ARG_PAREN 0x01000000
#define ARG_NONZERO 0x02000000
#define ARG_NO_INSERT 0x04000000 /* no arbitrary inserting */
#define ARG_NO_DELETE 0x08000000 /* no runtime deletes */
#define ARG_UNIQUE 0x10000000
#define ARG_QUOTE 0x20000000 /* wrap with quotes before parsing */
#define ARG_OFFSET 0x40000000
#define ARG_MAGIC 0x80000000

#define ARG_BAD_CONF 0xdead0000 /* overload return values */

struct config_args_s;

typedef int (ConfigDriver)( struct config_args_s *c );

struct config_reply_s {
    int err;
    char msg[SLAP_TEXT_BUFLEN];
};

typedef struct config_args_s {
    int argc;
    char **argv;
    int argv_size;
    char *line;
    char *tline;
    const char *fname;
    int lineno;
    int linelen;
    char log[MAXPATHLEN + STRLENOF(": line ") +
            LDAP_PVT_INTTYPE_CHARS(unsigned long)];
#define cr_msg reply.msg
    ConfigReply reply;
    int depth;
    int valx; /* multi-valued value index */
    /* parsed first val for simple cases */
    union {
        int v_int;
        unsigned v_uint;
        long v_long;
        size_t v_ulong;
        ber_len_t v_ber_t;
        char *v_string;
        struct berval v_bv;
    } values;
    /* return values for emit mode */
    BerVarray rvalue_vals;
    BerVarray rvalue_nvals;
#define SLAP_CONFIG_EMIT 0x2000 /* emit instead of set */
#define SLAP_CONFIG_ADD 0x4000 /* config file add vs LDAP add */
    int op;
    int type;         /* ConfigTable.arg_type & ARGS_USERLAND */
    void *ca_private; /* anything */
#ifndef SLAP_CONFIG_CLEANUP_MAX
#define SLAP_CONFIG_CLEANUP_MAX 16
#endif
    ConfigDriver *cleanups[SLAP_CONFIG_CLEANUP_MAX];
    ConfigType table; /* which config table did we come from */
    int num_cleanups;
} ConfigArgs;

#define value_int values.v_int
#define value_uint values.v_uint
#define value_long values.v_long
#define value_ulong values.v_ulong
#define value_ber_t values.v_ber_t
#define value_string values.v_string
#define value_bv values.v_bv

int config_fp_parse_line( ConfigArgs *c );

int config_set_vals( ConfigTable *ct, ConfigArgs *c );
int config_add_vals( ConfigTable *ct, ConfigArgs *c );

int config_push_cleanup( ConfigArgs *c, ConfigDriver *cleanup );

void init_config_argv( ConfigArgs *c );
int read_config_file( const char *fname, int depth, ConfigArgs *cf, ConfigTable *cft );

ConfigTable *config_find_keyword( ConfigTable *ct, ConfigArgs *c );

Listener *config_check_my_url( const char *url, LDAPURLDesc *lud );

LDAP_END_DECL

#endif /* CONFIG_H */