1 files changed, 258 insertions, 0 deletions
diff --git a/src/global/mail_conf_time.c b/src/global/mail_conf_time.c
new file mode 100644
index 0000000..5961dfe
--- /dev/null
+++ b/src/global/mail_conf_time.c
@@ -0,0 +1,258 @@
+/*++
+/* NAME
+/*	mail_conf_time 3
+/* SUMMARY
+/*	time interval configuration parameter support
+/* SYNOPSIS
+/*	#include <mail_conf.h>
+/*
+/*	int	get_mail_conf_time(name, defval, min, max);
+/*	const char *name;
+/*	const char *defval;
+/*	int	min;
+/*	int	max;
+/*
+/*	void	set_mail_conf_time(name, value)
+/*	const char *name;
+/*	const char *value;
+/*
+/*	void	set_mail_conf_time_int(name, value)
+/*	const char *name;
+/*	int     value;
+/*
+/*	void	get_mail_conf_time_table(table)
+/*	const CONFIG_TIME_TABLE *table;
+/* AUXILIARY FUNCTIONS
+/*	int	get_mail_conf_time2(name1, name2, defval, def_unit, min, max);
+/*	const char *name1;
+/*	const char *name2;
+/*	int	defval;
+/*	int	def_unit;
+/*	int	min;
+/*	int	max;
+/*
+/*	void	check_mail_conf_time(name, intval, min, max)
+/*	const char *name;
+/*	int	intval;
+/*	int	min;
+/*	int	max;
+/* DESCRIPTION
+/*	This module implements configuration parameter support
+/*	for time interval values. The conversion routines understand
+/*	one-letter suffixes to specify an explicit time unit: s
+/*	(seconds), m (minutes), h (hours), d (days) or w (weeks).
+/*	Internally, time is represented in seconds.
+/*
+/*	get_mail_conf_time() looks up the named entry in the global
+/*	configuration dictionary. The default value is returned
+/*	when no value was found. \fIdef_unit\fR supplies the default
+/*	time unit for numbers numbers specified without explicit unit.
+/*	\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.
+/*
+/*	set_mail_conf_time() 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_time_table() and get_mail_conf_time_fn_table() initialize
+/*	lists of variables, as directed by their table arguments. A table
+/*	must be terminated by a null entry.
+/*
+/*	check_mail_conf_time() terminates the program with a fatal
+/*	runtime error when the time does not meet its requirements.
+/* DIAGNOSTICS
+/*	Fatal errors: malformed numerical value, unknown time unit.
+/* BUGS
+/*	Values and defaults are given in any unit; upper and lower
+/*	bounds are given in seconds.
+/* 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 <ctype.h>
+
+/* Utility library. */
+
+#include <msg.h>
+#include <mymalloc.h>
+#include <dict.h>
+#include <stringops.h>
+
+/* Global library. */
+
+#include "conv_time.h"
+#include "mail_conf.h"
+
+/* convert_mail_conf_time - look up and convert integer parameter value */
+
+static int convert_mail_conf_time(const char *name, int *intval, int def_unit)
+{
+    const char *strval;
+
+    if ((strval = mail_conf_lookup_eval(name)) == 0)
+	return (0);
+    if (conv_time(strval, intval, def_unit) == 0)
+	msg_fatal("parameter %s: bad time value or unit: %s", name, strval);
+    return (1);
+}
+
+/* check_mail_conf_time - validate integer value */
+
+void    check_mail_conf_time(const char *name, int intval, int min, int max)
+{
+    if (min && intval < min)
+	msg_fatal("invalid %s: %d (min %d)", name, intval, min);
+    if (max && intval > max)
+	msg_fatal("invalid %s: %d (max %d)", name, intval, max);
+}
+
+/* get_def_time_unit - extract time unit from default value */
+
+static int get_def_time_unit(const char *name, const char *defval)
+{
+    const char *cp;
+
+    for (cp = mail_conf_eval(defval); /* void */ ; cp++) {
+	if (*cp == 0)
+	    msg_panic("parameter %s: missing time unit in default value: %s",
+		      name, defval);
+	if (ISALPHA(*cp)) {
+#if 0
+	    if (cp[1] != 0)
+		msg_panic("parameter %s: bad time unit in default value: %s",
+			  name, defval);
+#endif
+	    return (*cp);
+	}
+    }
+}
+
+/* get_mail_conf_time - evaluate integer-valued configuration variable */
+
+int     get_mail_conf_time(const char *name, const char *defval, int min, int max)
+{
+    int     intval;
+    int     def_unit;
+
+    def_unit = get_def_time_unit(name, defval);
+    if (convert_mail_conf_time(name, &intval, def_unit) == 0)
+	set_mail_conf_time(name, defval);
+    if (convert_mail_conf_time(name, &intval, def_unit) == 0)
+	msg_panic("get_mail_conf_time: parameter not found: %s", name);
+    check_mail_conf_time(name, intval, min, max);
+    return (intval);
+}
+
+/* get_mail_conf_time2 - evaluate integer-valued configuration variable */
+
+int     get_mail_conf_time2(const char *name1, const char *name2,
+			         int defval, int def_unit, int min, int max)
+{
+    int     intval;
+    char   *name;
+
+    name = concatenate(name1, name2, (char *) 0);
+    if (convert_mail_conf_time(name, &intval, def_unit) == 0)
+	set_mail_conf_time_int(name, defval);
+    if (convert_mail_conf_time(name, &intval, def_unit) == 0)
+	msg_panic("get_mail_conf_time2: parameter not found: %s", name);
+    check_mail_conf_time(name, intval, min, max);
+    myfree(name);
+    return (intval);
+}
+
+/* set_mail_conf_time - update integer-valued configuration dictionary entry */
+
+void    set_mail_conf_time(const char *name, const char *value)
+{
+    mail_conf_update(name, value);
+}
+
+/* set_mail_conf_time_int - update integer-valued configuration dictionary entry */
+
+void    set_mail_conf_time_int(const char *name, int value)
+{
+    const char myname[] = "set_mail_conf_time_int";
+    char    buf[BUFSIZ];		/* yeah! crappy code! */
+
+#ifndef NO_SNPRINTF
+    ssize_t ret;
+
+    ret = snprintf(buf, sizeof(buf), "%ds", value);
+    if (ret < 0)
+	msg_panic("%s: output error for %%ds", myname);
+    if (ret >= sizeof(buf))
+	msg_panic("%s: output for %%ds exceeds space %ld",
+		  myname, (long) sizeof(buf));
+#else
+    sprintf(buf, "%ds", value);			/* yeah! more crappy code! */
+#endif
+    mail_conf_update(name, buf);
+}
+
+/* get_mail_conf_time_table - look up table of integers */
+
+void    get_mail_conf_time_table(const CONFIG_TIME_TABLE *table)
+{
+    while (table->name) {
+	table->target[0] = get_mail_conf_time(table->name, table->defval,
+					      table->min, table->max);
+	table++;
+    }
+}
+
+#ifdef TEST
+
+ /*
+  * Stand-alone driver program for regression testing.
+  */
+#include <vstream.h>
+
+int     main(int unused_argc, char **unused_argv)
+{
+    static int seconds;
+    static int minutes;
+    static int hours;
+    static int days;
+    static int weeks;
+    static const CONFIG_TIME_TABLE time_table[] = {
+	"seconds", "10s", &seconds, 0, 0,
+	"minutes", "10m", &minutes, 0, 0,
+	"hours", "10h", &hours, 0, 0,
+	"days", "10d", &days, 0, 0,
+	"weeks", "10w", &weeks, 0, 0,
+	0,
+    };
+
+    get_mail_conf_time_table(time_table);
+    vstream_printf("10 seconds = %d\n", seconds);
+    vstream_printf("10 minutes = %d\n", minutes);
+    vstream_printf("10 hours = %d\n", hours);
+    vstream_printf("10 days = %d\n", days);
+    vstream_printf("10 weeks = %d\n", weeks);
+    vstream_fflush(VSTREAM_OUT);
+    return (0);
+}
+
+#endif