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/* time interval configuration parameter support
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/* #include <mail_conf.h>
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/* int get_mail_conf_time(name, defval, min, max);
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/* const char *defval;
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/* void set_mail_conf_time(name, value)
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/* void get_mail_conf_time_table(table)
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/* CONFIG_TIME_TABLE *table;
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/* AUXILIARY FUNCTIONS
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/* int get_mail_conf_time2(name1, name2, defval, min, max);
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/* This module implements configuration parameter support
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/* for time interval values. The conversion routines understand
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/* one-letter suffixes to specify an explicit time unit: s
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/* (seconds), m (minutes), h (hours), d (days) or w (weeks).
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/* Internally, time is represented in seconds.
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/* get_mail_conf_time() looks up the named entry in the global
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/* configuration dictionary. The default value is returned
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/* when no value was found. \fIdef_unit\fR supplies the default
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/* time unit for numbers numbers specified without explicit unit.
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/* \fImin\fR is zero or specifies a lower limit on the integer
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/* value or string length; \fImax\fR is zero or specifies an
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/* upper limit on the integer value or string length.
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/* set_mail_conf_time() updates the named entry in the global
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/* configuration dictionary. This has no effect on values that
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/* have been looked up earlier via the get_mail_conf_XXX() routines.
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/* get_mail_conf_time_table() and get_mail_conf_time_fn_table() initialize
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/* lists of variables, as directed by their table arguments. A table
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/* must be terminated by a null entry.
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/* Fatal errors: malformed numerical value, unknown time unit.
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/* Values and defaults are given in any unit; upper and lower
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/* bounds are given in seconds.
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/* config(3) general configuration
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/* mail_conf_str(3) string-valued configuration parameters
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/* The Secure Mailer license must be distributed with this software.
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/* IBM T.J. Watson Research
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/* Yorktown Heights, NY 10598, USA
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#include <stdio.h> /* sscanf() */
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/* Utility library. */
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#include <stringops.h>
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#include "mail_conf.h"
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#define HOUR (60 * MINUTE)
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#define DAY (24 * HOUR)
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#define WEEK (7 * DAY)
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/* convert_mail_conf_time - look up and convert integer parameter value */
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static int convert_mail_conf_time(const char *name, int *intval, int def_unit)
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if ((strval = mail_conf_lookup_eval(name)) == 0)
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switch (sscanf(strval, "%d%c%c", intval, &unit, &junk)) {
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msg_fatal("parameter %s: bad time unit: %s", name, strval);
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/* check_mail_conf_time - validate integer value */
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static void check_mail_conf_time(const char *name, int intval, int min, int max)
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if (min && intval < min)
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msg_fatal("invalid %s: %d (min %d)", name, intval, min);
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if (max && intval > max)
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msg_fatal("invalid %s: %d (max %d)", name, intval, max);
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/* get_def_time_unit - extract time unit from default value */
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static int get_def_time_unit(const char *name, const char *defval)
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for (cp = mail_conf_eval(defval); /* void */ ; cp++) {
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msg_panic("parameter %s: missing time unit in default value: %s",
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msg_panic("parameter %s: bad time unit in default value: %s",
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/* get_mail_conf_time - evaluate integer-valued configuration variable */
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int get_mail_conf_time(const char *name, const char *defval, int min, int max)
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def_unit = get_def_time_unit(name, defval);
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if (convert_mail_conf_time(name, &intval, def_unit) == 0)
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set_mail_conf_time(name, defval);
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if (convert_mail_conf_time(name, &intval, def_unit) == 0)
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msg_panic("get_mail_conf_time: parameter not found: %s", name);
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check_mail_conf_time(name, intval, min, max);
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/* get_mail_conf_time2 - evaluate integer-valued configuration variable */
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int get_mail_conf_time2(const char *name1, const char *name2,
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const char *defval, int min, int max)
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name = concatenate(name1, name2, (char *) 0);
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def_unit = get_def_time_unit(name, defval);
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if (convert_mail_conf_time(name, &intval, def_unit) == 0)
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set_mail_conf_time(name, defval);
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if (convert_mail_conf_time(name, &intval, def_unit) == 0)
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msg_panic("get_mail_conf_time2: parameter not found: %s", name);
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check_mail_conf_time(name, intval, min, max);
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/* set_mail_conf_time - update integer-valued configuration dictionary entry */
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void set_mail_conf_time(const char *name, const char *value)
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mail_conf_update(name, value);
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/* get_mail_conf_time_table - look up table of integers */
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void get_mail_conf_time_table(CONFIG_TIME_TABLE *table)
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while (table->name) {
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table->target[0] = get_mail_conf_time(table->name, table->defval,
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table->min, table->max);
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* Stand-alone driver program for regression testing.
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int main(int unused_argc, char **unused_argv)
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static CONFIG_TIME_TABLE time_table[] = {
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"seconds", "10s", &seconds, 0, 0,
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"minutes", "10m", &minutes, 0, 0,
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"hours", "10h", &hours, 0, 0,
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"days", "10d", &days, 0, 0,
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"weeks", "10w", &weeks, 0, 0,
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get_mail_conf_time_table(time_table);
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vstream_printf("10 seconds = %d\n", seconds);
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vstream_printf("10 minutes = %d\n", minutes);
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vstream_printf("10 hours = %d\n", hours);
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vstream_printf("10 days = %d\n", days);
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vstream_printf("10 weeks = %d\n", weeks);
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vstream_fflush(VSTREAM_OUT);
added
removed
src/global/mail_conf_time.c
