1 files changed, 129 insertions, 0 deletions
diff --git a/src/postconf/postconf_unused.c b/src/postconf/postconf_unused.c
new file mode 100644
index 0000000..d4416f8
--- /dev/null
+++ b/src/postconf/postconf_unused.c
@@ -0,0 +1,129 @@
+/*++
+/* NAME
+/*	postconf_unused 3
+/* SUMMARY
+/*	report unused parameters
+/* SYNOPSIS
+/*	#include <postconf.h>
+/*
+/*	void    pcf_flag_unused_main_parameters()
+/*
+/*	void    pcf_flag_unused_master_parameters()
+/* DESCRIPTION
+/*	These functions must be called after all parameter information
+/*	is initialized: built-ins, service-defined and user-defined.
+/*	In other words, don't call these functions with "postconf
+/*	-d" which ignores user-defined main.cf settings.
+/*
+/*	pcf_flag_unused_main_parameters() reports unused "name=value"
+/*	entries in main.cf.
+/*
+/*	pcf_flag_unused_master_parameters() reports unused "-o
+/*	name=value" entries in master.cf.
+/* DIAGNOSTICS
+/*	Problems are reported to the standard error stream.
+/* 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>
+
+/* Utility library. */
+
+#include <msg.h>
+#include <dict.h>
+#include <vstream.h>
+
+/* Global library. */
+
+#include <mail_params.h>
+#include <mail_conf.h>
+
+/* Application-specific. */
+
+#include <postconf.h>
+
+/* pcf_flag_unused_parameters - warn about unused parameters */
+
+static void pcf_flag_unused_parameters(DICT *dict, const char *conf_name,
+				               PCF_MASTER_ENT *local_scope)
+{
+    const char *myname = "pcf_flag_unused_parameters";
+    const char *param_name;
+    const char *param_value;
+    int     how;
+
+    /*
+     * Sanity checks.
+     */
+    if (pcf_param_table == 0)
+	msg_panic("%s: global parameter table is not initialized", myname);
+
+    /*
+     * Iterate over all entries, and flag parameter names that aren't used
+     * anywhere. Show the warning message at the end of the output.
+     */
+    if (dict->sequence == 0)
+	msg_panic("%s: parameter dictionary %s has no iterator",
+		  myname, conf_name);
+    for (how = DICT_SEQ_FUN_FIRST;
+	 dict->sequence(dict, how, &param_name, &param_value) == 0;
+	 how = DICT_SEQ_FUN_NEXT) {
+	if (PCF_PARAM_TABLE_LOCATE(pcf_param_table, param_name) == 0
+	    && (local_scope == 0
+		|| PCF_PARAM_TABLE_LOCATE(local_scope->valid_names, param_name) == 0)) {
+	    vstream_fflush(VSTREAM_OUT);
+	    msg_warn("%s/%s: unused parameter: %s=%s",
+		     var_config_dir, conf_name, param_name, param_value);
+	}
+    }
+}
+
+/* pcf_flag_unused_main_parameters - warn about unused parameters */
+
+void    pcf_flag_unused_main_parameters(void)
+{
+    const char *myname = "pcf_flag_unused_main_parameters";
+    DICT   *dict;
+
+    /*
+     * Iterate over all main.cf entries, and flag parameter names that aren't
+     * used anywhere.
+     */
+    if ((dict = dict_handle(CONFIG_DICT)) == 0)
+	msg_panic("%s: parameter dictionary %s not found",
+		  myname, CONFIG_DICT);
+    pcf_flag_unused_parameters(dict, MAIN_CONF_FILE, (PCF_MASTER_ENT *) 0);
+}
+
+/* pcf_flag_unused_master_parameters - warn about unused parameters */
+
+void    pcf_flag_unused_master_parameters(void)
+{
+    const char *myname = "pcf_flag_unused_master_parameters";
+    PCF_MASTER_ENT *masterp;
+    DICT   *dict;
+
+    /*
+     * Sanity checks.
+     */
+    if (pcf_master_table == 0)
+	msg_panic("%s: master table is not initialized", myname);
+
+    /*
+     * Iterate over all master.cf entries, and flag parameter names that
+     * aren't used anywhere.
+     */
+    for (masterp = pcf_master_table; masterp->argv != 0; masterp++)
+	if ((dict = masterp->all_params) != 0)
+	    pcf_flag_unused_parameters(dict, MASTER_CONF_FILE, masterp);
+}