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/*++
/* NAME
/* mail_conf_nbool 3
/* SUMMARY
/* boolean-valued configuration parameter support
/* SYNOPSIS
/* #include <mail_conf.h>
/*
/* int get_mail_conf_nbool(name, defval)
/* const char *name;
/* const char *defval;
/*
/* int get_mail_conf_nbool_fn(name, defval)
/* const char *name;
/* const char *(*defval)();
/*
/* void set_mail_conf_nbool(name, value)
/* const char *name;
/* const char *value;
/*
/* void get_mail_conf_nbool_table(table)
/* const CONFIG_NBOOL_TABLE *table;
/*
/* void get_mail_conf_nbool_fn_table(table)
/* const CONFIG_NBOOL_TABLE *table;
/* DESCRIPTION
/* This module implements configuration parameter support for
/* boolean values. The internal representation is zero (false)
/* and non-zero (true). The external representation is "no"
/* (false) and "yes" (true). The conversion from external
/* representation is case insensitive. Unlike mail_conf_bool(3)
/* the default is a string value which is subject to macro expansion.
/*
/* get_mail_conf_nbool() looks up the named entry in the global
/* configuration dictionary. The specified default value is
/* returned when no value was found.
/*
/* get_mail_conf_nbool_fn() is similar but specifies a function that
/* provides the default value. The function is called only
/* when the default value is needed.
/*
/* set_mail_conf_nbool() updates the named entry in the global
/* configuration dictionary. This has no effect on values that
/* have been looked up earlier via the get_mail_conf_XXX() routines.
/*
/* get_mail_conf_nbool_table() and get_mail_conf_int_fn_table() initialize
/* lists of variables, as directed by their table arguments. A table
/* must be terminated by a null entry.
/* DIAGNOSTICS
/* Fatal errors: malformed boolean value.
/* SEE ALSO
/* config(3) general configuration
/* mail_conf_str(3) string-valued configuration parameters
/* mail_conf_int(3) integer-valued configuration parameters
/* LICENSE
/* .ad
/* .fi
/* The Secure Mailer license must be distributed with this software.
/* AUTHOR(S)
/* Wietse Venema
/* IBM T.J. Watson Research
/* P.O. Box 704
/* Yorktown Heights, NY 10598, USA
/*--*/
/* System library. */
#include <sys_defs.h>
#include <stdlib.h>
#include <string.h>
#ifdef STRCASECMP_IN_STRINGS_H
#include <strings.h>
#endif
/* Utility library. */
#include <msg.h>
#include <dict.h>
/* Global library. */
#include "mail_conf.h"
/* convert_mail_conf_nbool - look up and convert boolean parameter value */
static int convert_mail_conf_nbool(const char *name, int *intval)
{
const char *strval;
if ((strval = mail_conf_lookup_eval(name)) == 0) {
return (0);
} else {
if (strcasecmp(strval, CONFIG_BOOL_YES) == 0) {
*intval = 1;
} else if (strcasecmp(strval, CONFIG_BOOL_NO) == 0) {
*intval = 0;
} else {
msg_fatal("bad boolean configuration: %s = %s", name, strval);
}
return (1);
}
}
/* get_mail_conf_nbool - evaluate boolean-valued configuration variable */
int get_mail_conf_nbool(const char *name, const char *defval)
{
int intval;
if (convert_mail_conf_nbool(name, &intval) == 0)
set_mail_conf_nbool(name, defval);
if (convert_mail_conf_nbool(name, &intval) == 0)
msg_panic("get_mail_conf_nbool: parameter not found: %s", name);
return (intval);
}
/* get_mail_conf_nbool_fn - evaluate boolean-valued configuration variable */
typedef const char *(*stupid_indent_int) (void);
int get_mail_conf_nbool_fn(const char *name, stupid_indent_int defval)
{
int intval;
if (convert_mail_conf_nbool(name, &intval) == 0)
set_mail_conf_nbool(name, defval());
if (convert_mail_conf_nbool(name, &intval) == 0)
msg_panic("get_mail_conf_nbool_fn: parameter not found: %s", name);
return (intval);
}
/* set_mail_conf_nbool - update boolean-valued configuration dictionary entry */
void set_mail_conf_nbool(const char *name, const char *value)
{
mail_conf_update(name, value);
}
/* get_mail_conf_nbool_table - look up table of booleans */
void get_mail_conf_nbool_table(const CONFIG_NBOOL_TABLE *table)
{
while (table->name) {
table->target[0] = get_mail_conf_nbool(table->name, table->defval);
table++;
}
}
/* get_mail_conf_nbool_fn_table - look up booleans, defaults are functions */
void get_mail_conf_nbool_fn_table(const CONFIG_NBOOL_FN_TABLE *table)
{
while (table->name) {
table->target[0] = get_mail_conf_nbool_fn(table->name, table->defval);
table++;
}
}
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