vnc: generalize "VNC server running on ..." message

The message is useful whenever the user specifies "-vnc to=XX".
Move it to ui/vnc.c.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

include/ui/console.h

@@ -460,7 +460,6 @@ void vnc_display_add_client(const char *id, int csock, bool skipauth);
 #ifdef CONFIG_VNC
 int vnc_display_password(const char *id, const char *password);
 int vnc_display_pw_expire(const char *id, time_t expires);
-char *vnc_display_local_addr(const char *id);
 QemuOpts *vnc_parse(const char *str, Error **errp);
 int vnc_init_func(void *opaque, QemuOpts *opts, Error **errp);
 #else
@@ -482,12 +481,6 @@ static inline int vnc_init_func(void *opaque, QemuOpts *opts, Error **errp)
     error_setg(errp, "VNC support is disabled");
     return -1;
 }
-static inline char *vnc_display_local_addr(const char *id)
-{
-    /* This must never be called if CONFIG_VNC is disabled */
-    error_report("VNC support is disabled");
-    abort();
-}
 #endif
 
 /* curses.c */

ui/vnc.c

@@ -3205,29 +3205,24 @@ int vnc_display_pw_expire(const char *id, time_t expires)
     return 0;
 }
 
-char *vnc_display_local_addr(const char *id)
+static void vnc_display_print_local_addr(VncDisplay *vs)
 {
-    VncDisplay *vs = vnc_display_find(id);
     SocketAddress *addr;
-    char *ret;
     Error *err = NULL;
 
-    assert(vs);
-
     addr = qio_channel_socket_get_local_address(vs->lsock, &err);
     if (!addr) {
-        return NULL;
+        return;
     }
 
     if (addr->type != SOCKET_ADDRESS_KIND_INET) {
         qapi_free_SocketAddress(addr);
-        return NULL;
+        return;
     }
-    ret = g_strdup_printf("%s:%s", addr->u.inet.data->host,
-                          addr->u.inet.data->port);
+    error_printf_unless_qmp("VNC server running on %s:%s\n",
+                            addr->u.inet.data->host,
+                            addr->u.inet.data->port);
     qapi_free_SocketAddress(addr);
-
-    return ret;
 }
 
 static QemuOptsList qemu_vnc_opts = {
@@ -3513,6 +3508,7 @@ void vnc_display_open(const char *id, Error **errp)
     const char *vnc;
     char *h;
     const char *credid;
+    int show_vnc_port = 0;
     bool sasl = false;
 #ifdef CONFIG_VNC_SASL
     int saslErr;
@@ -3592,6 +3588,7 @@ void vnc_display_open(const char *id, Error **errp)
             if (to) {
                 inet->has_to = true;
                 inet->to = to + 5900;
+                show_vnc_port = 1;
             }
             inet->ipv4 = ipv4;
             inet->has_ipv4 = has_ipv4;
@@ -3836,6 +3833,10 @@ void vnc_display_open(const char *id, Error **errp)
         }
     }
 
+    if (show_vnc_port) {
+        vnc_display_print_local_addr(vs);
+    }
+
     qapi_free_SocketAddress(saddr);
     qapi_free_SocketAddress(wsaddr);
     return;

vl.c

@@ -2947,7 +2947,6 @@ int main(int argc, char **argv, char **envp)
     const char *qtest_log = NULL;
     const char *pid_file = NULL;
     const char *incoming = NULL;
-    int show_vnc_port = 0;
     bool defconfig = true;
     bool userconfig = true;
     bool nographic = false;
@@ -4216,7 +4215,6 @@ int main(int argc, char **argv, char **envp)
         display_type = DT_COCOA;
 #elif defined(CONFIG_VNC)
         vnc_parse("localhost:0,to=99,id=default", &error_abort);
-        show_vnc_port = 1;
 #else
         display_type = DT_NONE;
 #endif
@@ -4565,11 +4563,6 @@ int main(int argc, char **argv, char **envp)
     qemu_opts_foreach(qemu_find_opts("vnc"),
                       vnc_init_func, NULL, NULL);
 #endif
-    if (show_vnc_port) {
-        char *ret = vnc_display_local_addr("default");
-        printf("VNC server running on '%s'\n", ret);
-        g_free(ret);
-    }
 
     if (using_spice) {
         qemu_spice_display_init();