]> git.ozlabs.org Git - petitboot/blobdiff - ui/ncurses/nc-config.c
ui/common: Add discover_client_enumerate to re-add device data
[petitboot] / ui / ncurses / nc-config.c
index 49f2e2f6093255c1ca2331634e4c9509d013c263..a09535371c7131d1f09e19457ecfee2fb2cbef77 100644 (file)
@@ -15,7 +15,9 @@
  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
-#define _GNU_SOURCE
+#if defined(HAVE_CONFIG_H)
+#include "config.h"
+#endif
 
 #include <errno.h>
 #include <stdlib.h>
 #include <talloc/talloc.h>
 #include <types/types.h>
 #include <log/log.h>
+#include <i18n/i18n.h>
 
-#include "config.h"
 #include "nc-cui.h"
 #include "nc-config.h"
 #include "nc-widgets.h"
 
-#define N_FIELDS       19
+#define N_FIELDS       25
+
+extern struct help_text config_help_text;
+
+enum autoboot_type {
+       AUTOBOOT_ANY,
+       AUTOBOOT_ONE,
+       AUTOBOOT_DISABLED,
+};
 
 enum net_conf_type {
        NET_CONF_TYPE_DHCP_ALL,
@@ -43,20 +53,28 @@ struct config_screen {
        struct nc_scr           scr;
        struct cui              *cui;
        struct nc_widgetset     *widgetset;
+       WINDOW                  *pad;
+
        bool                    exit;
+       bool                    show_help;
        void                    (*on_exit)(struct cui *);
 
+       int                     scroll_y;
+
        int                     label_x;
        int                     field_x;
        int                     network_config_y;
 
        enum net_conf_type      net_conf_type;
+       enum autoboot_type      autoboot_type;
 
        struct {
-               struct nc_widget_checkbox       *autoboot_f;
+               struct nc_widget_select         *autoboot_f;
                struct nc_widget_label          *autoboot_l;
+               struct nc_widget_select         *boot_device_f;
                struct nc_widget_textbox        *timeout_f;
                struct nc_widget_label          *timeout_l;
+               struct nc_widget_label          *timeout_help_l;
 
                struct nc_widget_label          *network_l;
                struct nc_widget_select         *network_f;
@@ -67,13 +85,17 @@ struct config_screen {
                struct nc_widget_textbox        *ip_addr_f;
                struct nc_widget_label          *ip_mask_l;
                struct nc_widget_textbox        *ip_mask_f;
+               struct nc_widget_label          *ip_addr_mask_help_l;
                struct nc_widget_label          *gateway_l;
                struct nc_widget_textbox        *gateway_f;
+               struct nc_widget_label          *gateway_help_l;
                struct nc_widget_label          *dns_l;
                struct nc_widget_textbox        *dns_f;
+               struct nc_widget_label          *dns_dhcp_help_l;
                struct nc_widget_label          *dns_help_l;
 
                struct nc_widget_button         *ok_b;
+               struct nc_widget_button         *help_b;
                struct nc_widget_button         *cancel_b;
        } widgets;
 };
@@ -89,16 +111,46 @@ static struct config_screen *config_screen_from_scr(struct nc_scr *scr)
        return config_screen;
 }
 
+static void pad_refresh(struct config_screen *screen)
+{
+       int y, x, rows, cols;
+
+       getmaxyx(screen->scr.sub_ncw, rows, cols);
+       getbegyx(screen->scr.sub_ncw, y, x);
+
+       prefresh(screen->pad, screen->scroll_y, 0, y, x, rows, cols);
+}
+
 static void config_screen_process_key(struct nc_scr *scr, int key)
 {
        struct config_screen *screen = config_screen_from_scr(scr);
        bool handled;
 
        handled = widgetset_process_key(screen->widgetset, key);
-       if (screen->exit)
+
+       if (!handled) {
+               switch (key) {
+               case 'x':
+               case 27: /* esc */
+                       screen->exit = true;
+                       break;
+               case 'h':
+                       screen->show_help = true;
+                       break;
+               }
+       }
+
+       if (screen->exit) {
                screen->on_exit(screen->cui);
-       else if (handled)
-               wrefresh(screen->scr.main_ncw);
+
+       } else if (screen->show_help) {
+               screen->show_help = false;
+               cui_show_help(screen->cui, _("System Configuration"),
+                               &config_help_text);
+
+       } else if (handled) {
+               pad_refresh(screen);
+       }
 }
 
 static void config_screen_resize(struct nc_scr *scr)
@@ -112,7 +164,9 @@ static int config_screen_post(struct nc_scr *scr)
        struct config_screen *screen = config_screen_from_scr(scr);
        widgetset_post(screen->widgetset);
        nc_scr_frame_draw(scr);
-       wrefresh(scr->main_ncw);
+       redrawwin(scr->main_ncw);
+       wrefresh(screen->scr.main_ncw);
+       pad_refresh(screen);
        return 0;
 }
 
@@ -131,17 +185,42 @@ struct nc_scr *config_screen_scr(struct config_screen *screen)
 static int screen_process_form(struct config_screen *screen)
 {
        const struct system_info *sysinfo = screen->cui->sysinfo;
-       struct config *config = talloc_zero(screen, struct config);
        enum net_conf_type net_conf_type;
        struct interface_config *iface;
+       struct config *config;
        char *str, *end;
-       int rc;
-
-       config_set_defaults(config);
-
-       config->autoboot_enabled =
-               widget_checkbox_get_value(screen->widgets.autoboot_f);
+       int rc, idx;
+
+       config = config_copy(screen, screen->cui->config);
+
+       screen->autoboot_type =
+               widget_select_get_value(screen->widgets.autoboot_f);
+
+       config->autoboot_enabled = screen->autoboot_type != AUTOBOOT_DISABLED;
+
+       if (screen->autoboot_type == AUTOBOOT_ONE) {
+               char mac[20], *uuid = NULL;
+
+               /* if idx is -1 here, we have an unknown UUID selected.
+                * Otherwise, it's a blockdev index (idx <= n_blockdevs) or an
+                * interface index.
+                */
+               idx = widget_select_get_value(screen->widgets.boot_device_f);
+               if (idx >= (int)sysinfo->n_blockdevs) {
+                       struct interface_info *info = sysinfo->
+                               interfaces[idx - sysinfo->n_blockdevs];
+                       mac_str(info->hwaddr, info->hwaddr_size,
+                                       mac, sizeof(mac));
+                       uuid = mac;
+               } else if (idx != -1) {
+                       uuid = sysinfo->blockdevs[idx]->uuid;
+               }
 
+               if (uuid) {
+                       talloc_free(config->boot_device);
+                       config->boot_device = talloc_strdup(config, uuid);
+               }
+       }
 
        str = widget_textbox_get_value(screen->widgets.timeout_f);
        if (str) {
@@ -163,8 +242,6 @@ static int screen_process_form(struct config_screen *screen)
                config->network.n_interfaces = 0;
 
        } else {
-               int idx;
-
                iface = talloc_zero(config, struct interface_config);
                config->network.n_interfaces = 1;
                config->network.interfaces = talloc_array(config,
@@ -183,18 +260,31 @@ static int screen_process_form(struct config_screen *screen)
        }
 
        if (net_conf_type == NET_CONF_TYPE_STATIC) {
+               char *ip, *mask, *gateway;
+
+               ip = widget_textbox_get_value(screen->widgets.ip_addr_f);
+               mask = widget_textbox_get_value(screen->widgets.ip_mask_f);
+               gateway = widget_textbox_get_value(screen->widgets.gateway_f);
+
+               if (!ip || !*ip || !mask || !*mask) {
+                       screen->scr.frame.status =
+                               _("No IP / mask values are set");
+                       nc_scr_frame_draw(&screen->scr);
+                       talloc_free(config);
+                       return -1;
+               }
+
                iface->method = CONFIG_METHOD_STATIC;
                iface->static_config.address = talloc_asprintf(iface, "%s/%s",
-                               widget_textbox_get_value(
-                                       screen->widgets.ip_addr_f),
-                               widget_textbox_get_value(
-                                       screen->widgets.ip_mask_f));
-               iface->static_config.gateway = talloc_strdup(iface,
-                               widget_textbox_get_value(
-                                       screen->widgets.gateway_f));
+                               ip, mask);
+               iface->static_config.gateway = talloc_strdup(iface, gateway);
        }
 
        str = widget_textbox_get_value(screen->widgets.dns_f);
+       talloc_free(config->network.dns_servers);
+       config->network.dns_servers = NULL;
+       config->network.n_dns_servers = 0;
+
        if (str && strlen(str)) {
                char *dns, *tmp;
                int i;
@@ -231,8 +321,18 @@ static int screen_process_form(struct config_screen *screen)
 static void ok_click(void *arg)
 {
        struct config_screen *screen = arg;
-       screen_process_form(screen);
-       screen->exit = true;
+       if (screen_process_form(screen))
+               /* errors are written to the status line, so we'll need
+                * to refresh */
+               wrefresh(screen->scr.main_ncw);
+       else
+               screen->exit = true;
+}
+
+static void help_click(void *arg)
+{
+       struct config_screen *screen = arg;
+       screen->show_help = true;
 }
 
 static void cancel_click(void *arg)
@@ -251,23 +351,47 @@ static int layout_pair(struct config_screen *screen, int y,
        return max(widget_height(label_w), widget_height(field));
 }
 
-static void config_screen_layout_widgets(struct config_screen *screen,
-               enum net_conf_type net_conf)
+static void config_screen_layout_widgets(struct config_screen *screen)
 {
-       struct nc_widget *wl, *wf;
+       struct nc_widget *wl, *wf, *wh;
+       int y, x, help_x;
        bool show;
-       int y, x;
 
        y = 1;
+       help_x = screen->field_x + 2 +
+               widget_width(widget_textbox_base(screen->widgets.dns_f));
 
        y += layout_pair(screen, y, screen->widgets.autoboot_l,
-                       widget_checkbox_base(screen->widgets.autoboot_f));
+                       widget_select_base(screen->widgets.autoboot_f));
 
-       y += layout_pair(screen, y, screen->widgets.timeout_l,
-                       widget_textbox_base(screen->widgets.timeout_f));
+       wf = widget_select_base(screen->widgets.boot_device_f);
+       if (screen->autoboot_type == AUTOBOOT_ONE) {
+               widget_set_visible(wf, true);
+               widget_move(wf, y, screen->field_x + 3);
+               y += widget_height(wf);
+       } else {
+               widget_set_visible(wf, false);
+       }
 
        y += 1;
 
+       wf = widget_textbox_base(screen->widgets.timeout_f);
+       wl = widget_label_base(screen->widgets.timeout_l);
+       wh = widget_label_base(screen->widgets.timeout_help_l);
+       if (screen->autoboot_type != AUTOBOOT_DISABLED) {
+               widget_set_visible(wl, true);
+               widget_set_visible(wf, true);
+               widget_set_visible(wh, true);
+               widget_move(wl, y, screen->label_x);
+               widget_move(wf, y, screen->field_x);
+               widget_move(wh, y, screen->field_x + widget_width(wf) + 1);
+               y += 2;
+       } else {
+               widget_set_visible(wl, false);
+               widget_set_visible(wf, false);
+               widget_set_visible(wh, false);
+       }
+
        y += layout_pair(screen, y, screen->widgets.network_l,
                        widget_select_base(screen->widgets.network_f));
 
@@ -277,8 +401,8 @@ static void config_screen_layout_widgets(struct config_screen *screen,
        wl = widget_label_base(screen->widgets.iface_l);
        wf = widget_select_base(screen->widgets.iface_f);
 
-       show = net_conf == NET_CONF_TYPE_DHCP_ONE ||
-               net_conf == NET_CONF_TYPE_STATIC;
+       show = screen->net_conf_type == NET_CONF_TYPE_DHCP_ONE ||
+               screen->net_conf_type == NET_CONF_TYPE_STATIC;
 
        widget_set_visible(wl, show);
        widget_set_visible(wf, show);
@@ -287,7 +411,7 @@ static void config_screen_layout_widgets(struct config_screen *screen,
                y += layout_pair(screen, y, screen->widgets.iface_l, wf) + 1;
 
        /* conditionally show static IP params */
-       show = net_conf == NET_CONF_TYPE_STATIC;
+       show = screen->net_conf_type == NET_CONF_TYPE_STATIC;
 
        wl = widget_label_base(screen->widgets.ip_addr_l);
        wf = widget_textbox_base(screen->widgets.ip_addr_f);
@@ -306,23 +430,38 @@ static void config_screen_layout_widgets(struct config_screen *screen,
        if (show) {
                widget_move(wl, y, x);
                widget_move(wf, y, x + 2);
-               y += 1;
+       }
+
+       /* help for IP/mask */
+       wh = widget_label_base(screen->widgets.ip_addr_mask_help_l);
+       widget_set_visible(wh, show);
+       if (show) {
+               widget_move(wh, y, help_x);
+               y++;
        }
 
        wl = widget_label_base(screen->widgets.gateway_l);
        wf = widget_textbox_base(screen->widgets.gateway_f);
+       wh = widget_label_base(screen->widgets.gateway_help_l);
        widget_set_visible(wl, show);
        widget_set_visible(wf, show);
+       widget_set_visible(wh, show);
 
-       if (show)
-               y += layout_pair(screen, y, screen->widgets.gateway_l, wf) + 1;
+       if (show) {
+               layout_pair(screen, y, screen->widgets.gateway_l, wf);
+               widget_move(wh, y, help_x);
+               y++;
+       }
 
-       y += layout_pair(screen, y, screen->widgets.dns_l,
+       wh = widget_label_base(screen->widgets.dns_help_l);
+       layout_pair(screen, y, screen->widgets.dns_l,
                        widget_textbox_base(screen->widgets.dns_f));
+       widget_move(wh, y, help_x);
+       y++;
 
        /* we show the DNS/DHCP help if we're configuring DHCP */
-       show = net_conf != NET_CONF_TYPE_STATIC;
-       wl = widget_label_base(screen->widgets.dns_help_l);
+       show = screen->net_conf_type != NET_CONF_TYPE_STATIC;
+       wl = widget_label_base(screen->widgets.dns_dhcp_help_l);
        widget_set_visible(wl, show);
        if (show) {
                widget_move(wl, y, screen->field_x);
@@ -333,8 +472,10 @@ static void config_screen_layout_widgets(struct config_screen *screen,
 
        widget_move(widget_button_base(screen->widgets.ok_b),
                        y, screen->field_x);
-       widget_move(widget_button_base(screen->widgets.cancel_b),
+       widget_move(widget_button_base(screen->widgets.help_b),
                        y, screen->field_x + 10);
+       widget_move(widget_button_base(screen->widgets.cancel_b),
+                       y, screen->field_x + 20);
 }
 
 static void config_screen_network_change(void *arg, int value)
@@ -342,7 +483,16 @@ static void config_screen_network_change(void *arg, int value)
        struct config_screen *screen = arg;
        screen->net_conf_type = value;
        widgetset_unpost(screen->widgetset);
-       config_screen_layout_widgets(screen, value);
+       config_screen_layout_widgets(screen);
+       widgetset_post(screen->widgetset);
+}
+
+static void config_screen_autoboot_change(void *arg, int value)
+{
+       struct config_screen *screen = arg;
+       screen->autoboot_type = value;
+       widgetset_unpost(screen->widgetset);
+       config_screen_layout_widgets(screen);
        widgetset_post(screen->widgetset);
 }
 
@@ -381,9 +531,10 @@ static enum net_conf_type find_net_conf_type(const struct config *config)
 static void config_screen_setup_empty(struct config_screen *screen)
 {
        widget_new_label(screen->widgetset, 2, screen->field_x,
-                       "Waiting for configuration data...");
+                       _("Waiting for configuration data..."));
        screen->widgets.cancel_b = widget_new_button(screen->widgetset,
-                       4, screen->field_x, 6, "Cancel", cancel_click, screen);
+                       4, screen->field_x, 6, _("Cancel"),
+                       cancel_click, screen);
 }
 
 
@@ -396,6 +547,7 @@ static void config_screen_setup_widgets(struct config_screen *screen,
        char *str, *ip, *mask, *gw;
        enum net_conf_type type;
        unsigned int i;
+       bool found;
 
        build_assert(sizeof(screen->widgets) / sizeof(struct widget *)
                        == N_FIELDS);
@@ -403,45 +555,126 @@ static void config_screen_setup_widgets(struct config_screen *screen,
        type = screen->net_conf_type;
        ifcfg = first_active_interface(config);
 
-       screen->widgets.autoboot_l = widget_new_label(set, 0, 0, "Autoboot:");
-       screen->widgets.autoboot_f = widget_new_checkbox(set, 0, 0,
-                                       config->autoboot_enabled);
+       screen->widgets.autoboot_l = widget_new_label(set, 0, 0,
+                                       _("Autoboot:"));
+       screen->widgets.autoboot_f = widget_new_select(set, 0, 0, 55);
+
+       widget_select_on_change(screen->widgets.autoboot_f,
+                       config_screen_autoboot_change, screen);
+
+       screen->widgets.boot_device_f = widget_new_select(set, 0, 0, 55);
+
+       widget_select_add_option(screen->widgets.autoboot_f,
+                                       AUTOBOOT_DISABLED,
+                                       _("Don't autoboot"),
+                                       screen->autoboot_type ==
+                                               AUTOBOOT_DISABLED);
+       widget_select_add_option(screen->widgets.autoboot_f,
+                                       AUTOBOOT_ANY,
+                                       _("Autoboot from any "
+                                               "disk/network device"),
+                                       screen->autoboot_type ==
+                                               AUTOBOOT_ANY);
+       widget_select_add_option(screen->widgets.autoboot_f,
+                                       AUTOBOOT_ONE,
+                                       _("Only autoboot from a specific "
+                                               "disk/network device"),
+                                       screen->autoboot_type ==
+                                               AUTOBOOT_ONE);
+
+       found = false;
+
+       for (i = 0; i < sysinfo->n_blockdevs; i++) {
+               struct blockdev_info *bd = sysinfo->blockdevs[i];
+               bool selected;
+               char *label;
+
+               selected = config->boot_device &&
+                               !strcmp(config->boot_device, bd->uuid);
+               if (selected)
+                       found = true;
+
+               label = talloc_asprintf(screen, _("disk: %s [uuid: %s]"),
+                               bd->name, bd->uuid);
+
+               widget_select_add_option(screen->widgets.boot_device_f, i,
+                                       label, selected);
+       }
+
+       for (i = 0; i < sysinfo->n_interfaces; i++) {
+               struct interface_info *info = sysinfo->interfaces[i];
+               char *label, mac[20];
+               bool selected;
+
+               mac_str(info->hwaddr, info->hwaddr_size, mac, sizeof(mac));
+               selected = config->boot_device &&
+                               !strcmp(config->boot_device, mac);
+               if (selected)
+                       found = true;
+
+               label = talloc_asprintf(screen, _("net:  %s [mac: %s]"),
+                               info->name, mac);
+
+               widget_select_add_option(screen->widgets.boot_device_f,
+                                               i + sysinfo->n_blockdevs,
+                                               label, selected);
+       }
+
+       if (screen->autoboot_type == AUTOBOOT_ONE && !found) {
+               char *label;
+
+               label = talloc_asprintf(screen, _("Unknown UUID: %s"),
+                               config->boot_device);
+
+               widget_select_add_option(screen->widgets.boot_device_f, -1,
+                                               label, true);
+       }
 
        str = talloc_asprintf(screen, "%d", config->autoboot_timeout_sec);
-       screen->widgets.timeout_l = widget_new_label(set, 0, 0, "Timeout:");
+       screen->widgets.timeout_l = widget_new_label(set, 0, 0, _("Timeout:"));
        screen->widgets.timeout_f = widget_new_textbox(set, 0, 0, 5, str);
+       screen->widgets.timeout_help_l = widget_new_label(set, 0, 0,
+                                       _("seconds"));
+
+       widget_textbox_set_fixed_size(screen->widgets.timeout_f);
+       widget_textbox_set_validator_integer(screen->widgets.timeout_f, 0, 999);
 
-       screen->widgets.network_l = widget_new_label(set, 0, 0, "Network");
+       screen->widgets.network_l = widget_new_label(set, 0, 0, _("Network:"));
        screen->widgets.network_f = widget_new_select(set, 0, 0, 50);
 
        widget_select_add_option(screen->widgets.network_f,
                                        NET_CONF_TYPE_DHCP_ALL,
-                                       "DHCP on all active interfaces",
+                                       _("DHCP on all active interfaces"),
                                        type == NET_CONF_TYPE_DHCP_ALL);
        widget_select_add_option(screen->widgets.network_f,
                                        NET_CONF_TYPE_DHCP_ONE,
-                                       "DHCP on a specific interface",
+                                       _("DHCP on a specific interface"),
                                        type == NET_CONF_TYPE_DHCP_ONE);
        widget_select_add_option(screen->widgets.network_f,
                                        NET_CONF_TYPE_STATIC,
-                                       "Static IP configuration",
+                                       _("Static IP configuration"),
                                        type == NET_CONF_TYPE_STATIC);
 
        widget_select_on_change(screen->widgets.network_f,
                        config_screen_network_change, screen);
 
-       screen->widgets.iface_l = widget_new_label(set, 0, 0, "Device:");
-       screen->widgets.iface_f = widget_new_select(set, 0, 0, 20);
+       screen->widgets.iface_l = widget_new_label(set, 0, 0, _("Device:"));
+       screen->widgets.iface_f = widget_new_select(set, 0, 0, 50);
 
        for (i = 0; i < sysinfo->n_interfaces; i++) {
                struct interface_info *info = sysinfo->interfaces[i];
+               char str[50], mac[20];
                bool is_default;
 
                is_default = ifcfg && !memcmp(ifcfg->hwaddr, info->hwaddr,
                                        sizeof(ifcfg->hwaddr));
 
+               mac_str(info->hwaddr, info->hwaddr_size, mac, sizeof(mac));
+               snprintf(str, sizeof(str), "%s [%s, %s]", info->name, mac,
+                               info->link ? _("link up") : _("link down"));
+
                widget_select_add_option(screen->widgets.iface_f,
-                                               i, info->name, is_default);
+                                               i, str, is_default);
        }
 
        gw = ip = mask = NULL;
@@ -459,13 +692,25 @@ static void config_screen_setup_widgets(struct config_screen *screen,
                gw = ifcfg->static_config.gateway;
        }
 
-       screen->widgets.ip_addr_l = widget_new_label(set, 0, 0, "IP/mask:");
+       screen->widgets.ip_addr_l = widget_new_label(set, 0, 0, _("IP/mask:"));
        screen->widgets.ip_addr_f = widget_new_textbox(set, 0, 0, 16, ip);
        screen->widgets.ip_mask_l = widget_new_label(set, 0, 0, "/");
        screen->widgets.ip_mask_f = widget_new_textbox(set, 0, 0, 3, mask);
+       screen->widgets.ip_addr_mask_help_l =
+               widget_new_label(set, 0, 0, _("(eg. 192.168.0.10 / 24)"));
+
+       widget_textbox_set_fixed_size(screen->widgets.ip_addr_f);
+       widget_textbox_set_fixed_size(screen->widgets.ip_mask_f);
+       widget_textbox_set_validator_ipv4(screen->widgets.ip_addr_f);
+       widget_textbox_set_validator_integer(screen->widgets.ip_mask_f, 1, 31);
 
-       screen->widgets.gateway_l = widget_new_label(set, 0, 0, "Gateway:");
+       screen->widgets.gateway_l = widget_new_label(set, 0, 0, _("Gateway:"));
        screen->widgets.gateway_f = widget_new_textbox(set, 0, 0, 16, gw);
+       screen->widgets.gateway_help_l =
+               widget_new_label(set, 0, 0, _("(eg. 192.168.0.1)"));
+
+       widget_textbox_set_fixed_size(screen->widgets.gateway_f);
+       widget_textbox_set_validator_ipv4(screen->widgets.gateway_f);
 
        str = talloc_strdup(screen, "");
        for (i = 0; i < config->network.n_dns_servers; i++) {
@@ -474,23 +719,67 @@ static void config_screen_setup_widgets(struct config_screen *screen,
                                config->network.dns_servers[i]);
        }
 
-       screen->widgets.dns_l = widget_new_label(set, 0, 0, "DNS Server(s):");
+       screen->widgets.dns_l = widget_new_label(set, 0, 0,
+                                       _("DNS Server(s):"));
        screen->widgets.dns_f = widget_new_textbox(set, 0, 0, 32, str);
+       screen->widgets.dns_help_l =
+               widget_new_label(set, 0, 0, _("(eg. 192.168.0.2)"));
 
-       screen->widgets.dns_help_l = widget_new_label(set, 0, 0,
-                       "(if not provided by DHCP server)");
+       widget_textbox_set_validator_ipv4_multi(screen->widgets.dns_f);
 
-       screen->widgets.ok_b = widget_new_button(set, 0, 0, 6, "OK",
+       screen->widgets.dns_dhcp_help_l = widget_new_label(set, 0, 0,
+                       _("(if not provided by DHCP server)"));
+
+       screen->widgets.ok_b = widget_new_button(set, 0, 0, 6, _("OK"),
                        ok_click, screen);
-       screen->widgets.cancel_b = widget_new_button(set, 0, 0, 6, "Cancel",
+       screen->widgets.help_b = widget_new_button(set, 0, 0, 6, _("Help"),
+                       help_click, screen);
+       screen->widgets.cancel_b = widget_new_button(set, 0, 0, 6, _("Cancel"),
                        cancel_click, screen);
 }
 
-void config_screen_update(struct config_screen *screen,
+static void config_screen_widget_focus(struct nc_widget *widget, void *arg)
+{
+       struct config_screen *screen = arg;
+       int w_y, s_max;
+
+       w_y = widget_y(widget) + widget_focus_y(widget);
+       s_max = getmaxy(screen->scr.sub_ncw) - 1;
+
+       if (w_y < screen->scroll_y)
+               screen->scroll_y = w_y;
+
+       else if (w_y + screen->scroll_y + 1 > s_max)
+               screen->scroll_y = 1 + w_y - s_max;
+
+       else
+               return;
+
+       pad_refresh(screen);
+}
+
+static void config_screen_draw(struct config_screen *screen,
                const struct config *config,
                const struct system_info *sysinfo)
 {
        bool repost = false;
+       int height;
+
+       /* The size of the pad we'll need depends on the number of interfaces.
+        *
+        * We use N_FIELDS (which is quite conservative, as some fields share
+        * a line) as a base, then add 3 (as the network select field is
+        * takes 3 lines), and n_interfaces (as the network interface field
+        * has n_interfaces lines).
+        */
+       height = N_FIELDS + 3;
+       if (sysinfo)
+               height += sysinfo->n_interfaces;
+       if (!screen->pad || getmaxy(screen->pad) < height) {
+               if (screen->pad)
+                       delwin(screen->pad);
+               screen->pad = newpad(height, COLS);
+       }
 
        if (screen->widgetset) {
                widgetset_unpost(screen->widgetset);
@@ -499,21 +788,42 @@ void config_screen_update(struct config_screen *screen,
        }
 
        screen->widgetset = widgetset_create(screen, screen->scr.main_ncw,
-                       screen->scr.sub_ncw);
+                       screen->pad);
+       widgetset_set_widget_focus(screen->widgetset,
+                       config_screen_widget_focus, screen);
 
        if (!config || !sysinfo) {
                config_screen_setup_empty(screen);
        } else {
                screen->net_conf_type = find_net_conf_type(config);
+               if (!config->autoboot_enabled)
+                       screen->autoboot_type = AUTOBOOT_DISABLED;
+               else
+                       screen->autoboot_type = config->boot_device ?
+                                       AUTOBOOT_ONE : AUTOBOOT_ANY;
 
                config_screen_setup_widgets(screen, config, sysinfo);
-               config_screen_layout_widgets(screen, screen->net_conf_type);
+               config_screen_layout_widgets(screen);
        }
 
        if (repost)
                widgetset_post(screen->widgetset);
+}
 
-       wrefresh(screen->scr.main_ncw);
+void config_screen_update(struct config_screen *screen,
+               const struct config *config,
+               const struct system_info *sysinfo)
+{
+       config_screen_draw(screen, config, sysinfo);
+       pad_refresh(screen);
+}
+
+static int config_screen_destroy(void *arg)
+{
+       struct config_screen *screen = arg;
+       if (screen->pad)
+               delwin(screen->pad);
+       return 0;
 }
 
 struct config_screen *config_screen_init(struct cui *cui,
@@ -524,6 +834,7 @@ struct config_screen *config_screen_init(struct cui *cui,
        struct config_screen *screen;
 
        screen = talloc_zero(cui, struct config_screen);
+       talloc_set_destructor(screen, config_screen_destroy);
        nc_scr_init(&screen->scr, pb_config_screen_sig, 0,
                        cui, config_screen_process_key,
                        config_screen_post, config_screen_unpost,
@@ -535,15 +846,15 @@ struct config_screen *config_screen_init(struct cui *cui,
        screen->field_x = 17;
 
        screen->scr.frame.ltitle = talloc_strdup(screen,
-                       "Petitboot System Configuration");
+                       _("Petitboot System Configuration"));
        screen->scr.frame.rtitle = NULL;
        screen->scr.frame.help = talloc_strdup(screen,
-                       "tab=next, shift+tab=previous");
+                       _("tab=next, shift+tab=previous, x=exit, h=help"));
        nc_scr_frame_draw(&screen->scr);
 
        scrollok(screen->scr.sub_ncw, true);
 
-       config_screen_update(screen, config, sysinfo);
+       config_screen_draw(screen, config, sysinfo);
 
        return screen;
 }