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-rw-r--r--src/global/mail_conf_str.c199
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diff --git a/src/global/mail_conf_str.c b/src/global/mail_conf_str.c
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+/*++
+/* NAME
+/* mail_conf_str 3
+/* SUMMARY
+/* string-valued global configuration parameter support
+/* SYNOPSIS
+/* #include <mail_conf.h>
+/*
+/* char *get_mail_conf_str(name, defval, min, max)
+/* const char *name;
+/* const char *defval;
+/* int min;
+/* int max;
+/*
+/* char *get_mail_conf_str_fn(name, defval, min, max)
+/* const char *name;
+/* const char *(*defval)(void);
+/* int min;
+/* int max;
+/*
+/* void set_mail_conf_str(name, value)
+/* const char *name;
+/* const char *value;
+/*
+/* void get_mail_conf_str_table(table)
+/* const CONFIG_STR_TABLE *table;
+/*
+/* void get_mail_conf_str_fn_table(table)
+/* const CONFIG_STR_TABLE *table;
+/* AUXILIARY FUNCTIONS
+/* char *get_mail_conf_str2(name, suffix, defval, min, max)
+/* const char *name;
+/* const char *suffix;
+/* const char *defval;
+/* int min;
+/* int max;
+/*
+/* void check_mail_conf_str(name, strval, min, max)
+/* const char *name;
+/* const char *strval;
+/* int min;
+/* int max;
+/* DESCRIPTION
+/* This module implements support for string-valued global
+/* configuration parameters.
+/*
+/* get_mail_conf_str() looks up the named entry in the global
+/* configuration dictionary. The default value is returned when
+/* no value was found. String results should be passed to myfree()
+/* when no longer needed. \fImin\fR is zero or specifies a lower
+/* bound on the string length; \fImax\fR is zero or specifies an
+/* upper limit on the string length.
+/*
+/* get_mail_conf_str_fn() is similar but specifies a function that
+/* provides the default value. The function is called only when
+/* the default value is used.
+/*
+/* set_mail_conf_str() 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_str_table() and get_mail_conf_str_fn_table() read
+/* lists of variables, as directed by their table arguments. A table
+/* must be terminated by a null entry.
+/*
+/* get_mail_conf_str2() concatenates the two names and is otherwise
+/* identical to get_mail_conf_str().
+/*
+/* check_mail_conf_str() exits with a fatal run-time error
+/* when the string does not meet its length requirements.
+/* DIAGNOSTICS
+/* Fatal errors: bad string length.
+/* SEE ALSO
+/* config(3) generic config parameter support
+/* 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>
+
+/* Utility library. */
+
+#include <msg.h>
+#include <mymalloc.h>
+#include <stringops.h>
+
+/* Global library. */
+
+#include "mail_conf.h"
+
+/* check_mail_conf_str - validate string length */
+
+void check_mail_conf_str(const char *name, const char *strval,
+ int min, int max)
+{
+ ssize_t len = strlen(strval);
+
+ if (min && len < min)
+ msg_fatal("bad string length %ld < %d: %s = %s",
+ (long) len, min, name, strval);
+ if (max && len > max)
+ msg_fatal("bad string length %ld > %d: %s = %s",
+ (long) len, max, name, strval);
+}
+
+/* get_mail_conf_str - evaluate string-valued configuration variable */
+
+char *get_mail_conf_str(const char *name, const char *defval,
+ int min, int max)
+{
+ const char *strval;
+
+ if ((strval = mail_conf_lookup_eval(name)) == 0) {
+ strval = mail_conf_eval(defval);
+ mail_conf_update(name, strval);
+ }
+ check_mail_conf_str(name, strval, min, max);
+ return (mystrdup(strval));
+}
+
+/* get_mail_conf_str2 - evaluate string-valued configuration variable */
+
+char *get_mail_conf_str2(const char *name1, const char *name2,
+ const char *defval,
+ int min, int max)
+{
+ const char *strval;
+ char *name;
+
+ name = concatenate(name1, name2, (char *) 0);
+ if ((strval = mail_conf_lookup_eval(name)) == 0) {
+ strval = mail_conf_eval(defval);
+ mail_conf_update(name, strval);
+ }
+ check_mail_conf_str(name, strval, min, max);
+ myfree(name);
+ return (mystrdup(strval));
+}
+
+/* get_mail_conf_str_fn - evaluate string-valued configuration variable */
+
+typedef const char *(*stupid_indent_str) (void);
+
+char *get_mail_conf_str_fn(const char *name, stupid_indent_str defval,
+ int min, int max)
+{
+ const char *strval;
+
+ if ((strval = mail_conf_lookup_eval(name)) == 0) {
+ strval = mail_conf_eval(defval());
+ mail_conf_update(name, strval);
+ }
+ check_mail_conf_str(name, strval, min, max);
+ return (mystrdup(strval));
+}
+
+/* set_mail_conf_str - update string-valued configuration dictionary entry */
+
+void set_mail_conf_str(const char *name, const char *value)
+{
+ mail_conf_update(name, value);
+}
+
+/* get_mail_conf_str_table - look up table of strings */
+
+void get_mail_conf_str_table(const CONFIG_STR_TABLE *table)
+{
+ while (table->name) {
+ if (table->target[0])
+ myfree(table->target[0]);
+ table->target[0] = get_mail_conf_str(table->name, table->defval,
+ table->min, table->max);
+ table++;
+ }
+}
+
+/* get_mail_conf_str_fn_table - look up strings, defaults are functions */
+
+void get_mail_conf_str_fn_table(const CONFIG_STR_FN_TABLE *table)
+{
+ while (table->name) {
+ if (table->target[0])
+ myfree(table->target[0]);
+ table->target[0] = get_mail_conf_str_fn(table->name, table->defval,
+ table->min, table->max);
+ table++;
+ }
+}