[systemd-devel] [PATCH] [RFC] Show listen addresses in status output

[Oleksii Shevchuk]

---
 src/systemctl/systemctl.c | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/src/systemctl/systemctl.c b/src/systemctl/systemctl.c
index 328b91b..0ad5112 100644
--- a/src/systemctl/systemctl.c
+++ b/src/systemctl/systemctl.c
@@ -2254,6 +2254,7 @@ typedef struct UnitStatusInfo {
         unsigned n_accepted;
         unsigned n_connections;
         bool accept;
+        char **listen;
 
         /* Device */
         const char *sysfs_path;
@@ -2386,6 +2387,19 @@ static void print_status_info(UnitStatusInfo *i) {
                 }
         }
 
+        if (!strv_isempty(i->listen)) {
+                char **t;
+                bool first = true;
+
+                STRV_FOREACH(t, i->listen) {
+                        if (first) {
+                                printf("\t  Listen: %s\n", *t);
+                                first = false;
+                        } else
+                                printf("\t          %s\n", *t);
+                }
+        }
+
         if (i->accept)
                 printf("\tAccepted: %u; Connected: %u\n", i->n_accepted, i->n_connections);
 
@@ -2757,6 +2771,27 @@ static int status_property(const char *name, DBusMessageIter *iter, UnitStatusIn
 
                                 dbus_message_iter_next(&sub);
                         }
+
+                } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRING &&
+                           startswith(name, "Listen")) {
+                        DBusMessageIter sub;
+
+                        dbus_message_iter_recurse(iter, &sub);
+                        while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING) {
+                                const char *s;
+                                char **l;
+
+                                dbus_message_iter_get_basic(&sub, &s);
+
+                                l = strv_append(i->listen, s);
+                                if (!l)
+                                        return -ENOMEM;
+
+                                strv_free(i->listen);
+                                i->listen = l;
+
+                                dbus_message_iter_next(&sub);
+                        }
                 }
 
                 break;
-- 
1.8.1.2