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/*++
/* NAME
/* mail_conf_int 3
/* SUMMARY
/* integer-valued configuration parameter support
/* SYNOPSIS
/* #include <mail_conf.h>
/*
/* int get_mail_conf_int(name, defval, min, max);
/* const char *name;
/* int defval;
/* int min;
/* int max;
/*
/* int get_mail_conf_int_fn(name, defval, min, max);
/* const char *name;
/* int (*defval)();
/* int min;
/* int max;
/*
/* void set_mail_conf_int(name, value)
/* const char *name;
/* int value;
/*
/* void get_mail_conf_int_table(table)
/* const CONFIG_INT_TABLE *table;
/*
/* void get_mail_conf_int_fn_table(table)
/* const CONFIG_INT_TABLE *table;
/* AUXILIARY FUNCTIONS
/* int get_mail_conf_int2(name1, name2, defval, min, max);
/* const char *name1;
/* const char *name2;
/* int defval;
/* int min;
/* int max;
/*
/* void check_mail_conf_int(name, intval, min, max)
/* const char *name;
/* int intval;
/* int min;
/* int max;
/* DESCRIPTION
/* This module implements configuration parameter support
/* for integer values.
/*
/* get_mail_conf_int() looks up the named entry in the global
/* configuration dictionary. The default value is returned
/* when no value was found.
/* \fImin\fR is zero or specifies a lower limit on the integer
/* value or string length; \fImax\fR is zero or specifies an
/* upper limit on the integer value or string length.
/*
/* get_mail_conf_int_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_int() 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_int_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.
/*
/* get_mail_conf_int2() concatenates the two names and is otherwise
/* identical to get_mail_conf_int().
/*
/* check_mail_conf_int() exits with a fatal run-time error
/* when the integer value does not meet its requirements.
/* DIAGNOSTICS
/* Fatal errors: malformed numerical value.
/* SEE ALSO
/* config(3) general configuration
/* mail_conf_str(3) string-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
/*
/* Wietse Venema
/* Google, Inc.
/* 111 8th Avenue
/* New York, NY 10011, USA
/*--*/
/* System library. */
#include <sys_defs.h>
#include <stdlib.h>
#include <stdio.h> /* BUFSIZ */
#include <errno.h>
/* Utility library. */
#include <msg.h>
#include <mymalloc.h>
#include <dict.h>
#include <stringops.h>
/* Global library. */
#include "mail_conf.h"
/* convert_mail_conf_int - look up and convert integer parameter value */
static int convert_mail_conf_int(const char *name, int *intval)
{
const char *strval;
char *end;
long longval;
if ((strval = mail_conf_lookup_eval(name)) != 0) {
errno = 0;
*intval = longval = strtol(strval, &end, 10);
if (*strval == 0 || *end != 0 || errno == ERANGE || longval != *intval)
msg_fatal("bad numerical configuration: %s = %s", name, strval);
return (1);
}
return (0);
}
/* check_mail_conf_int - validate integer value */
void check_mail_conf_int(const char *name, int intval, int min, int max)
{
if (min && intval < min)
msg_fatal("invalid %s parameter value %d < %d", name, intval, min);
if (max && intval > max)
msg_fatal("invalid %s parameter value %d > %d", name, intval, max);
}
/* get_mail_conf_int - evaluate integer-valued configuration variable */
int get_mail_conf_int(const char *name, int defval, int min, int max)
{
int intval;
if (convert_mail_conf_int(name, &intval) == 0)
set_mail_conf_int(name, intval = defval);
check_mail_conf_int(name, intval, min, max);
return (intval);
}
/* get_mail_conf_int2 - evaluate integer-valued configuration variable */
int get_mail_conf_int2(const char *name1, const char *name2, int defval,
int min, int max)
{
int intval;
char *name;
name = concatenate(name1, name2, (char *) 0);
if (convert_mail_conf_int(name, &intval) == 0)
set_mail_conf_int(name, intval = defval);
check_mail_conf_int(name, intval, min, max);
myfree(name);
return (intval);
}
/* get_mail_conf_int_fn - evaluate integer-valued configuration variable */
typedef int (*stupid_indent_int) (void);
int get_mail_conf_int_fn(const char *name, stupid_indent_int defval,
int min, int max)
{
int intval;
if (convert_mail_conf_int(name, &intval) == 0)
set_mail_conf_int(name, intval = defval());
check_mail_conf_int(name, intval, min, max);
return (intval);
}
/* set_mail_conf_int - update integer-valued configuration dictionary entry */
void set_mail_conf_int(const char *name, int value)
{
const char myname[] = "set_mail_conf_int";
char buf[BUFSIZ]; /* yeah! crappy code! */
#ifndef NO_SNPRINTF
ssize_t ret;
ret = snprintf(buf, sizeof(buf), "%d", value);
if (ret < 0)
msg_panic("%s: output error for %%d", myname);
if (ret >= sizeof(buf))
msg_panic("%s: output for %%d exceeds space %ld",
myname, (long) sizeof(buf));
#else
sprintf(buf, "%d", value); /* yeah! more crappy code! */
#endif
mail_conf_update(name, buf);
}
/* get_mail_conf_int_table - look up table of integers */
void get_mail_conf_int_table(const CONFIG_INT_TABLE *table)
{
while (table->name) {
table->target[0] = get_mail_conf_int(table->name, table->defval,
table->min, table->max);
table++;
}
}
/* get_mail_conf_int_fn_table - look up integers, defaults are functions */
void get_mail_conf_int_fn_table(const CONFIG_INT_FN_TABLE *table)
{
while (table->name) {
table->target[0] = get_mail_conf_int_fn(table->name, table->defval,
table->min, table->max);
table++;
}
}
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