1 files changed, 199 insertions, 0 deletions
diff --git a/src/global/mail_conf_str.c b/src/global/mail_conf_str.c
new file mode 100644
index 0000000..d8e0bd1
--- /dev/null
+++ b/src/global/mail_conf_str.c
@@ -0,0 +1,199 @@
+/*++
+/* 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++;
+    }
+}