git.ozlabs.org Git - petitboot/blob - ui/ncurses/nc-config.c

   1 /*
   2  *  Copyright (C) 2013 IBM Corporation
   3  *
   4  *  This program is free software; you can redistribute it and/or modify
   5  *  it under the terms of the GNU General Public License as published by
   6  *  the Free Software Foundation; version 2 of the License.
   7  *
   8  *  This program is distributed in the hope that it will be useful,
   9  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  *  GNU General Public License for more details.
  12  *
  13  *  You should have received a copy of the GNU General Public License
  14  *  along with this program; if not, write to the Free Software
  15  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  16  */
  17
  18 #if defined(HAVE_CONFIG_H)
  19 #include "config.h"
  20 #endif
  21
  22 #include <errno.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25
  26 #include <pb-config/pb-config.h>
  27 #include <talloc/talloc.h>
  28 #include <types/types.h>
  29 #include <log/log.h>
  30 #include <i18n/i18n.h>
  31
  32 #include "nc-cui.h"
  33 #include "nc-config.h"
  34 #include "nc-widgets.h"
  35
  36 #define N_FIELDS        26
  37
  38 extern struct help_text config_help_text;
  39
  40 enum autoboot_type {
  41         AUTOBOOT_ANY,
  42         AUTOBOOT_ONE,
  43         AUTOBOOT_DISABLED,
  44 };
  45
  46 enum net_conf_type {
  47         NET_CONF_TYPE_DHCP_ALL,
  48         NET_CONF_TYPE_DHCP_ONE,
  49         NET_CONF_TYPE_STATIC,
  50 };
  51
  52 struct config_screen {
  53         struct nc_scr           scr;
  54         struct cui              *cui;
  55         struct nc_widgetset     *widgetset;
  56         WINDOW                  *pad;
  57
  58         bool                    exit;
  59         bool                    show_help;
  60         bool                    need_redraw;
  61         void                    (*on_exit)(struct cui *);
  62
  63         int                     scroll_y;
  64
  65         int                     label_x;
  66         int                     field_x;
  67         int                     network_config_y;
  68
  69         enum net_conf_type      net_conf_type;
  70         enum autoboot_type      autoboot_type;
  71
  72         struct {
  73                 struct nc_widget_select         *autoboot_f;
  74                 struct nc_widget_label          *autoboot_l;
  75                 struct nc_widget_select         *boot_device_f;
  76                 struct nc_widget_textbox        *timeout_f;
  77                 struct nc_widget_label          *timeout_l;
  78                 struct nc_widget_label          *timeout_help_l;
  79
  80                 struct nc_widget_label          *network_l;
  81                 struct nc_widget_select         *network_f;
  82
  83                 struct nc_widget_label          *iface_l;
  84                 struct nc_widget_select         *iface_f;
  85                 struct nc_widget_label          *ip_addr_l;
  86                 struct nc_widget_textbox        *ip_addr_f;
  87                 struct nc_widget_label          *ip_mask_l;
  88                 struct nc_widget_textbox        *ip_mask_f;
  89                 struct nc_widget_label          *ip_addr_mask_help_l;
  90                 struct nc_widget_label          *gateway_l;
  91                 struct nc_widget_textbox        *gateway_f;
  92                 struct nc_widget_label          *gateway_help_l;
  93                 struct nc_widget_label          *dns_l;
  94                 struct nc_widget_textbox        *dns_f;
  95                 struct nc_widget_label          *dns_dhcp_help_l;
  96                 struct nc_widget_label          *dns_help_l;
  97
  98                 struct nc_widget_label          *safe_mode;
  99                 struct nc_widget_button         *ok_b;
 100                 struct nc_widget_button         *help_b;
 101                 struct nc_widget_button         *cancel_b;
 102         } widgets;
 103 };
 104
 105 static struct config_screen *config_screen_from_scr(struct nc_scr *scr)
 106 {
 107         struct config_screen *config_screen;
 108
 109         assert(scr->sig == pb_config_screen_sig);
 110         config_screen = (struct config_screen *)
 111                 ((char *)scr - (size_t)&((struct config_screen *)0)->scr);
 112         assert(config_screen->scr.sig == pb_config_screen_sig);
 113         return config_screen;
 114 }
 115
 116 static void pad_refresh(struct config_screen *screen)
 117 {
 118         int y, x, rows, cols;
 119
 120         getmaxyx(screen->scr.sub_ncw, rows, cols);
 121         getbegyx(screen->scr.sub_ncw, y, x);
 122
 123         prefresh(screen->pad, screen->scroll_y, 0, y, x, rows, cols);
 124 }
 125
 126 static void config_screen_process_key(struct nc_scr *scr, int key)
 127 {
 128         struct config_screen *screen = config_screen_from_scr(scr);
 129         bool handled;
 130
 131         handled = widgetset_process_key(screen->widgetset, key);
 132
 133         if (!handled) {
 134                 switch (key) {
 135                 case 'x':
 136                 case 27: /* esc */
 137                         screen->exit = true;
 138                         break;
 139                 case 'h':
 140                         screen->show_help = true;
 141                         break;
 142                 }
 143         }
 144
 145         if (screen->exit) {
 146                 screen->on_exit(screen->cui);
 147
 148         } else if (screen->show_help) {
 149                 screen->show_help = false;
 150                 screen->need_redraw = true;
 151                 cui_show_help(screen->cui, _("System Configuration"),
 152                                 &config_help_text);
 153
 154         } else if (handled) {
 155                 pad_refresh(screen);
 156         }
 157 }
 158
 159 static void config_screen_resize(struct nc_scr *scr)
 160 {
 161         struct config_screen *screen = config_screen_from_scr(scr);
 162         (void)screen;
 163 }
 164
 165 static int config_screen_post(struct nc_scr *scr)
 166 {
 167         struct config_screen *screen = config_screen_from_scr(scr);
 168         widgetset_post(screen->widgetset);
 169         nc_scr_frame_draw(scr);
 170         if (screen->need_redraw) {
 171                 redrawwin(scr->main_ncw);
 172                 screen->need_redraw = false;
 173         }
 174         wrefresh(screen->scr.main_ncw);
 175         pad_refresh(screen);
 176         return 0;
 177 }
 178
 179 static int config_screen_unpost(struct nc_scr *scr)
 180 {
 181         struct config_screen *screen = config_screen_from_scr(scr);
 182         widgetset_unpost(screen->widgetset);
 183         return 0;
 184 }
 185
 186 struct nc_scr *config_screen_scr(struct config_screen *screen)
 187 {
 188         return &screen->scr;
 189 }
 190
 191 static int screen_process_form(struct config_screen *screen)
 192 {
 193         const struct system_info *sysinfo = screen->cui->sysinfo;
 194         enum net_conf_type net_conf_type;
 195         struct interface_config *iface;
 196         char *str, *end, *uuid;
 197         struct config *config;
 198         int rc, idx;
 199
 200         config = config_copy(screen, screen->cui->config);
 201
 202         screen->autoboot_type =
 203                 widget_select_get_value(screen->widgets.autoboot_f);
 204
 205         config->autoboot_enabled = screen->autoboot_type != AUTOBOOT_DISABLED;
 206
 207         uuid = NULL;
 208         if (screen->autoboot_type == AUTOBOOT_ONE) {
 209                 char mac[20];
 210
 211                 /* if idx is -1 here, we have an unknown UUID selected.
 212                  * Otherwise, it's a blockdev index (idx <= n_blockdevs) or an
 213                  * interface index.
 214                  */
 215                 idx = widget_select_get_value(screen->widgets.boot_device_f);
 216                 if (idx >= (int)sysinfo->n_blockdevs) {
 217                         struct interface_info *info = sysinfo->
 218                                 interfaces[idx - sysinfo->n_blockdevs];
 219                         mac_str(info->hwaddr, info->hwaddr_size,
 220                                         mac, sizeof(mac));
 221                         uuid = mac;
 222                 } else if (idx != -1) {
 223                         uuid = sysinfo->blockdevs[idx]->uuid;
 224                 }
 225         }
 226
 227         talloc_free(config->boot_device);
 228         config->boot_device = uuid ? talloc_strdup(config, uuid) : NULL;
 229
 230         str = widget_textbox_get_value(screen->widgets.timeout_f);
 231         if (str) {
 232                 unsigned long x;
 233                 errno = 0;
 234                 x = strtoul(str, &end, 10);
 235                 if (!errno && end != str)
 236                         config->autoboot_timeout_sec = x;
 237         }
 238
 239         net_conf_type = widget_select_get_value(screen->widgets.network_f);
 240
 241         /* if we don't have any network interfaces, prevent per-interface
 242          * configuration */
 243         if (sysinfo->n_interfaces == 0)
 244                 net_conf_type = NET_CONF_TYPE_DHCP_ALL;
 245
 246         if (net_conf_type == NET_CONF_TYPE_DHCP_ALL) {
 247                 config->network.n_interfaces = 0;
 248
 249         } else {
 250                 iface = talloc_zero(config, struct interface_config);
 251                 config->network.n_interfaces = 1;
 252                 config->network.interfaces = talloc_array(config,
 253                                 struct interface_config *, 1);
 254                 config->network.interfaces[0] = iface;
 255
 256                 /* copy hwaddr (from the sysinfo interface data) to
 257                  * the configuration */
 258                 idx = widget_select_get_value(screen->widgets.iface_f);
 259                 memcpy(iface->hwaddr, sysinfo->interfaces[idx]->hwaddr,
 260                                 sizeof(iface->hwaddr));
 261         }
 262
 263         if (net_conf_type == NET_CONF_TYPE_DHCP_ONE) {
 264                 iface->method = CONFIG_METHOD_DHCP;
 265         }
 266
 267         if (net_conf_type == NET_CONF_TYPE_STATIC) {
 268                 char *ip, *mask, *gateway;
 269
 270                 ip = widget_textbox_get_value(screen->widgets.ip_addr_f);
 271                 mask = widget_textbox_get_value(screen->widgets.ip_mask_f);
 272                 gateway = widget_textbox_get_value(screen->widgets.gateway_f);
 273
 274                 if (!ip || !*ip || !mask || !*mask) {
 275                         screen->scr.frame.status =
 276                                 _("No IP / mask values are set");
 277                         nc_scr_frame_draw(&screen->scr);
 278                         talloc_free(config);
 279                         return -1;
 280                 }
 281
 282                 iface->method = CONFIG_METHOD_STATIC;
 283                 iface->static_config.address = talloc_asprintf(iface, "%s/%s",
 284                                 ip, mask);
 285                 iface->static_config.gateway = talloc_strdup(iface, gateway);
 286         }
 287
 288         str = widget_textbox_get_value(screen->widgets.dns_f);
 289         talloc_free(config->network.dns_servers);
 290         config->network.dns_servers = NULL;
 291         config->network.n_dns_servers = 0;
 292
 293         if (str && strlen(str)) {
 294                 char *dns, *tmp;
 295                 int i;
 296
 297                 for (;;) {
 298                         dns = strtok_r(str, " \t", &tmp);
 299
 300                         if (!dns)
 301                                 break;
 302
 303                         i = config->network.n_dns_servers++;
 304                         config->network.dns_servers = talloc_realloc(config,
 305                                         config->network.dns_servers,
 306                                         const char *,
 307                                         config->network.n_dns_servers);
 308                         config->network.dns_servers[i] =
 309                                 talloc_strdup(config, dns);
 310
 311                         str = NULL;
 312                 }
 313         }
 314
 315         config->safe_mode = false;
 316         rc = cui_send_config(screen->cui, config);
 317         talloc_free(config);
 318
 319         if (rc)
 320                 pb_log("cui_send_config failed!\n");
 321         else
 322                 pb_debug("config sent!\n");
 323
 324         return 0;
 325 }
 326
 327 static void ok_click(void *arg)
 328 {
 329         struct config_screen *screen = arg;
 330         if (screen_process_form(screen))
 331                 /* errors are written to the status line, so we'll need
 332                  * to refresh */
 333                 wrefresh(screen->scr.main_ncw);
 334         else
 335                 screen->exit = true;
 336 }
 337
 338 static void help_click(void *arg)
 339 {
 340         struct config_screen *screen = arg;
 341         screen->show_help = true;
 342 }
 343
 344 static void cancel_click(void *arg)
 345 {
 346         struct config_screen *screen = arg;
 347         screen->exit = true;
 348 }
 349
 350 static int layout_pair(struct config_screen *screen, int y,
 351                 struct nc_widget_label *label,
 352                 struct nc_widget *field)
 353 {
 354         struct nc_widget *label_w = widget_label_base(label);
 355         widget_move(label_w, y, screen->label_x);
 356         widget_move(field, y, screen->field_x);
 357         return max(widget_height(label_w), widget_height(field));
 358 }
 359
 360 static void config_screen_layout_widgets(struct config_screen *screen)
 361 {
 362         struct nc_widget *wl, *wf, *wh;
 363         int y, x, help_x;
 364         bool show;
 365
 366         y = 1;
 367         help_x = screen->field_x + 2 +
 368                 widget_width(widget_textbox_base(screen->widgets.dns_f));
 369
 370         y += layout_pair(screen, y, screen->widgets.autoboot_l,
 371                         widget_select_base(screen->widgets.autoboot_f));
 372
 373         wf = widget_select_base(screen->widgets.boot_device_f);
 374         if (screen->autoboot_type == AUTOBOOT_ONE) {
 375                 widget_set_visible(wf, true);
 376                 widget_move(wf, y, screen->field_x + 3);
 377                 y += widget_height(wf);
 378         } else {
 379                 widget_set_visible(wf, false);
 380         }
 381
 382         y += 1;
 383
 384         wf = widget_textbox_base(screen->widgets.timeout_f);
 385         wl = widget_label_base(screen->widgets.timeout_l);
 386         wh = widget_label_base(screen->widgets.timeout_help_l);
 387         if (screen->autoboot_type != AUTOBOOT_DISABLED) {
 388                 widget_set_visible(wl, true);
 389                 widget_set_visible(wf, true);
 390                 widget_set_visible(wh, true);
 391                 widget_move(wl, y, screen->label_x);
 392                 widget_move(wf, y, screen->field_x);
 393                 widget_move(wh, y, screen->field_x + widget_width(wf) + 1);
 394                 y += 2;
 395         } else {
 396                 widget_set_visible(wl, false);
 397                 widget_set_visible(wf, false);
 398                 widget_set_visible(wh, false);
 399         }
 400
 401         y += layout_pair(screen, y, screen->widgets.network_l,
 402                         widget_select_base(screen->widgets.network_f));
 403
 404         y += 1;
 405
 406         /* conditionally show iface select */
 407         wl = widget_label_base(screen->widgets.iface_l);
 408         wf = widget_select_base(screen->widgets.iface_f);
 409
 410         show = screen->net_conf_type == NET_CONF_TYPE_DHCP_ONE ||
 411                 screen->net_conf_type == NET_CONF_TYPE_STATIC;
 412
 413         widget_set_visible(wl, show);
 414         widget_set_visible(wf, show);
 415
 416         if (show)
 417                 y += layout_pair(screen, y, screen->widgets.iface_l, wf) + 1;
 418
 419         /* conditionally show static IP params */
 420         show = screen->net_conf_type == NET_CONF_TYPE_STATIC;
 421
 422         wl = widget_label_base(screen->widgets.ip_addr_l);
 423         wf = widget_textbox_base(screen->widgets.ip_addr_f);
 424         widget_set_visible(wl, show);
 425         widget_set_visible(wf, show);
 426         x = screen->field_x + widget_width(wf) + 1;
 427
 428         if (show)
 429                 layout_pair(screen, y, screen->widgets.ip_addr_l, wf);
 430
 431         wl = widget_label_base(screen->widgets.ip_mask_l);
 432         wf = widget_textbox_base(screen->widgets.ip_mask_f);
 433         widget_set_visible(wl, show);
 434         widget_set_visible(wf, show);
 435
 436         if (show) {
 437                 widget_move(wl, y, x);
 438                 widget_move(wf, y, x + 2);
 439         }
 440
 441         /* help for IP/mask */
 442         wh = widget_label_base(screen->widgets.ip_addr_mask_help_l);
 443         widget_set_visible(wh, show);
 444         if (show) {
 445                 widget_move(wh, y, help_x);
 446                 y++;
 447         }
 448
 449         wl = widget_label_base(screen->widgets.gateway_l);
 450         wf = widget_textbox_base(screen->widgets.gateway_f);
 451         wh = widget_label_base(screen->widgets.gateway_help_l);
 452         widget_set_visible(wl, show);
 453         widget_set_visible(wf, show);
 454         widget_set_visible(wh, show);
 455
 456         if (show) {
 457                 layout_pair(screen, y, screen->widgets.gateway_l, wf);
 458                 widget_move(wh, y, help_x);
 459                 y++;
 460         }
 461
 462         wh = widget_label_base(screen->widgets.dns_help_l);
 463         layout_pair(screen, y, screen->widgets.dns_l,
 464                         widget_textbox_base(screen->widgets.dns_f));
 465         widget_move(wh, y, help_x);
 466         y++;
 467
 468         /* we show the DNS/DHCP help if we're configuring DHCP */
 469         show = screen->net_conf_type != NET_CONF_TYPE_STATIC;
 470         wl = widget_label_base(screen->widgets.dns_dhcp_help_l);
 471         widget_set_visible(wl, show);
 472         if (show) {
 473                 widget_move(wl, y, screen->field_x);
 474                 y += 1;
 475         }
 476
 477         y += 1;
 478
 479         show = screen->cui->config->safe_mode;
 480         if (show) {
 481                 widget_move(widget_label_base(screen->widgets.safe_mode),
 482                         y, screen->field_x);
 483                 y += 1;
 484         }
 485
 486         widget_move(widget_button_base(screen->widgets.ok_b),
 487                         y, screen->field_x);
 488         widget_move(widget_button_base(screen->widgets.help_b),
 489                         y, screen->field_x + 10);
 490         widget_move(widget_button_base(screen->widgets.cancel_b),
 491                         y, screen->field_x + 24);
 492 }
 493
 494 static void config_screen_network_change(void *arg, int value)
 495 {
 496         struct config_screen *screen = arg;
 497         screen->net_conf_type = value;
 498         widgetset_unpost(screen->widgetset);
 499         config_screen_layout_widgets(screen);
 500         widgetset_post(screen->widgetset);
 501 }
 502
 503 static void config_screen_autoboot_change(void *arg, int value)
 504 {
 505         struct config_screen *screen = arg;
 506         screen->autoboot_type = value;
 507         widgetset_unpost(screen->widgetset);
 508         config_screen_layout_widgets(screen);
 509         widgetset_post(screen->widgetset);
 510 }
 511
 512 static struct interface_config *first_active_interface(
 513                 const struct config *config)
 514 {
 515         unsigned int i;
 516
 517         for (i = 0; i < config->network.n_interfaces; i++) {
 518                 if (config->network.interfaces[i]->ignore)
 519                         continue;
 520                 return config->network.interfaces[i];
 521         }
 522         return NULL;
 523 }
 524
 525 static enum net_conf_type find_net_conf_type(const struct config *config)
 526 {
 527         struct interface_config *ifcfg;
 528
 529         ifcfg = first_active_interface(config);
 530
 531         if (!ifcfg)
 532                 return NET_CONF_TYPE_DHCP_ALL;
 533
 534         else if (ifcfg->method == CONFIG_METHOD_DHCP)
 535                 return NET_CONF_TYPE_DHCP_ONE;
 536
 537         else if (ifcfg->method == CONFIG_METHOD_STATIC)
 538                 return NET_CONF_TYPE_STATIC;
 539
 540         assert(0);
 541         return NET_CONF_TYPE_DHCP_ALL;
 542 }
 543
 544 static void config_screen_setup_empty(struct config_screen *screen)
 545 {
 546         widget_new_label(screen->widgetset, 2, screen->field_x,
 547                         _("Waiting for configuration data..."));
 548         screen->widgets.cancel_b = widget_new_button(screen->widgetset,
 549                         4, screen->field_x, 9, _("Cancel"),
 550                         cancel_click, screen);
 551 }
 552
 553
 554 static void config_screen_setup_widgets(struct config_screen *screen,
 555                 const struct config *config,
 556                 const struct system_info *sysinfo)
 557 {
 558         struct nc_widgetset *set = screen->widgetset;
 559         struct interface_config *ifcfg;
 560         char *str, *ip, *mask, *gw;
 561         enum net_conf_type type;
 562         unsigned int i;
 563         bool found;
 564
 565         build_assert(sizeof(screen->widgets) / sizeof(struct widget *)
 566                         == N_FIELDS);
 567
 568         type = screen->net_conf_type;
 569         ifcfg = first_active_interface(config);
 570
 571         screen->widgets.autoboot_l = widget_new_label(set, 0, 0,
 572                                         _("Autoboot:"));
 573         screen->widgets.autoboot_f = widget_new_select(set, 0, 0, 55);
 574
 575         widget_select_on_change(screen->widgets.autoboot_f,
 576                         config_screen_autoboot_change, screen);
 577
 578         screen->widgets.boot_device_f = widget_new_select(set, 0, 0, 55);
 579
 580         widget_select_add_option(screen->widgets.autoboot_f,
 581                                         AUTOBOOT_DISABLED,
 582                                         _("Don't autoboot"),
 583                                         screen->autoboot_type ==
 584                                                 AUTOBOOT_DISABLED);
 585         widget_select_add_option(screen->widgets.autoboot_f,
 586                                         AUTOBOOT_ANY,
 587                                         _("Autoboot from any "
 588                                                 "disk/network device"),
 589                                         screen->autoboot_type ==
 590                                                 AUTOBOOT_ANY);
 591         widget_select_add_option(screen->widgets.autoboot_f,
 592                                         AUTOBOOT_ONE,
 593                                         _("Only autoboot from a specific "
 594                                                 "disk/network device"),
 595                                         screen->autoboot_type ==
 596                                                 AUTOBOOT_ONE);
 597
 598         found = false;
 599
 600         for (i = 0; i < sysinfo->n_blockdevs; i++) {
 601                 struct blockdev_info *bd = sysinfo->blockdevs[i];
 602                 bool selected;
 603                 char *label;
 604
 605                 selected = config->boot_device &&
 606                                 !strcmp(config->boot_device, bd->uuid);
 607                 if (selected)
 608                         found = true;
 609
 610                 label = talloc_asprintf(screen, _("disk: %s [uuid: %s]"),
 611                                 bd->name, bd->uuid);
 612
 613                 widget_select_add_option(screen->widgets.boot_device_f, i,
 614                                         label, selected);
 615         }
 616
 617         for (i = 0; i < sysinfo->n_interfaces; i++) {
 618                 struct interface_info *info = sysinfo->interfaces[i];
 619                 char *label, mac[20];
 620                 bool selected;
 621
 622                 mac_str(info->hwaddr, info->hwaddr_size, mac, sizeof(mac));
 623                 selected = config->boot_device &&
 624                                 !strcmp(config->boot_device, mac);
 625                 if (selected)
 626                         found = true;
 627
 628                 label = talloc_asprintf(screen, _("net:  %s [mac: %s]"),
 629                                 info->name, mac);
 630
 631                 widget_select_add_option(screen->widgets.boot_device_f,
 632                                                 i + sysinfo->n_blockdevs,
 633                                                 label, selected);
 634         }
 635
 636         if (screen->autoboot_type == AUTOBOOT_ONE && !found) {
 637                 char *label;
 638
 639                 label = talloc_asprintf(screen, _("Unknown UUID: %s"),
 640                                 config->boot_device);
 641
 642                 widget_select_add_option(screen->widgets.boot_device_f, -1,
 643                                                 label, true);
 644         }
 645
 646         str = talloc_asprintf(screen, "%d", config->autoboot_timeout_sec);
 647         screen->widgets.timeout_l = widget_new_label(set, 0, 0, _("Timeout:"));
 648         screen->widgets.timeout_f = widget_new_textbox(set, 0, 0, 5, str);
 649         screen->widgets.timeout_help_l = widget_new_label(set, 0, 0,
 650                                         _("seconds"));
 651
 652         widget_textbox_set_fixed_size(screen->widgets.timeout_f);
 653         widget_textbox_set_validator_integer(screen->widgets.timeout_f, 0, 999);
 654
 655         screen->widgets.network_l = widget_new_label(set, 0, 0, _("Network:"));
 656         screen->widgets.network_f = widget_new_select(set, 0, 0, 50);
 657
 658         widget_select_add_option(screen->widgets.network_f,
 659                                         NET_CONF_TYPE_DHCP_ALL,
 660                                         _("DHCP on all active interfaces"),
 661                                         type == NET_CONF_TYPE_DHCP_ALL);
 662         widget_select_add_option(screen->widgets.network_f,
 663                                         NET_CONF_TYPE_DHCP_ONE,
 664                                         _("DHCP on a specific interface"),
 665                                         type == NET_CONF_TYPE_DHCP_ONE);
 666         widget_select_add_option(screen->widgets.network_f,
 667                                         NET_CONF_TYPE_STATIC,
 668                                         _("Static IP configuration"),
 669                                         type == NET_CONF_TYPE_STATIC);
 670
 671         widget_select_on_change(screen->widgets.network_f,
 672                         config_screen_network_change, screen);
 673
 674         screen->widgets.iface_l = widget_new_label(set, 0, 0, _("Device:"));
 675         screen->widgets.iface_f = widget_new_select(set, 0, 0, 50);
 676
 677         for (i = 0; i < sysinfo->n_interfaces; i++) {
 678                 struct interface_info *info = sysinfo->interfaces[i];
 679                 char str[50], mac[20];
 680                 bool is_default;
 681
 682                 is_default = ifcfg && !memcmp(ifcfg->hwaddr, info->hwaddr,
 683                                         sizeof(ifcfg->hwaddr));
 684
 685                 mac_str(info->hwaddr, info->hwaddr_size, mac, sizeof(mac));
 686                 snprintf(str, sizeof(str), "%s [%s, %s]", info->name, mac,
 687                                 info->link ? _("link up") : _("link down"));
 688
 689                 widget_select_add_option(screen->widgets.iface_f,
 690                                                 i, str, is_default);
 691         }
 692
 693         gw = ip = mask = NULL;
 694         if (ifcfg && ifcfg->method == CONFIG_METHOD_STATIC) {
 695                 char *sep;
 696
 697                 str = talloc_strdup(screen, ifcfg->static_config.address);
 698                 sep = strchr(str, '/');
 699                 ip = str;
 700
 701                 if (sep) {
 702                         *sep = '\0';
 703                         mask = sep + 1;
 704                 }
 705                 gw = ifcfg->static_config.gateway;
 706         }
 707
 708         screen->widgets.ip_addr_l = widget_new_label(set, 0, 0, _("IP/mask:"));
 709         screen->widgets.ip_addr_f = widget_new_textbox(set, 0, 0, 16, ip);
 710         screen->widgets.ip_mask_l = widget_new_label(set, 0, 0, "/");
 711         screen->widgets.ip_mask_f = widget_new_textbox(set, 0, 0, 3, mask);
 712         screen->widgets.ip_addr_mask_help_l =
 713                 widget_new_label(set, 0, 0, _("(eg. 192.168.0.10 / 24)"));
 714
 715         widget_textbox_set_fixed_size(screen->widgets.ip_addr_f);
 716         widget_textbox_set_fixed_size(screen->widgets.ip_mask_f);
 717         widget_textbox_set_validator_ipv4(screen->widgets.ip_addr_f);
 718         widget_textbox_set_validator_integer(screen->widgets.ip_mask_f, 1, 31);
 719
 720         screen->widgets.gateway_l = widget_new_label(set, 0, 0, _("Gateway:"));
 721         screen->widgets.gateway_f = widget_new_textbox(set, 0, 0, 16, gw);
 722         screen->widgets.gateway_help_l =
 723                 widget_new_label(set, 0, 0, _("(eg. 192.168.0.1)"));
 724
 725         widget_textbox_set_fixed_size(screen->widgets.gateway_f);
 726         widget_textbox_set_validator_ipv4(screen->widgets.gateway_f);
 727
 728         str = talloc_strdup(screen, "");
 729         for (i = 0; i < config->network.n_dns_servers; i++) {
 730                 str = talloc_asprintf_append(str, "%s%s",
 731                                 (i == 0) ? "" : " ",
 732                                 config->network.dns_servers[i]);
 733         }
 734
 735         screen->widgets.dns_l = widget_new_label(set, 0, 0,
 736                                         _("DNS Server(s):"));
 737         screen->widgets.dns_f = widget_new_textbox(set, 0, 0, 32, str);
 738         screen->widgets.dns_help_l =
 739                 widget_new_label(set, 0, 0, _("(eg. 192.168.0.2)"));
 740
 741         widget_textbox_set_validator_ipv4_multi(screen->widgets.dns_f);
 742
 743         screen->widgets.dns_dhcp_help_l = widget_new_label(set, 0, 0,
 744                         _("(if not provided by DHCP server)"));
 745
 746         if (config->safe_mode)
 747                 screen->widgets.safe_mode = widget_new_label(set, 0, 0,
 748                          _("Selecting 'OK' will exit safe mode"));
 749
 750         screen->widgets.ok_b = widget_new_button(set, 0, 0, 6, _("OK"),
 751                         ok_click, screen);
 752         screen->widgets.help_b = widget_new_button(set, 0, 0, 10, _("Help"),
 753                         help_click, screen);
 754         screen->widgets.cancel_b = widget_new_button(set, 0, 0, 10, _("Cancel"),
 755                         cancel_click, screen);
 756 }
 757
 758 static void config_screen_widget_focus(struct nc_widget *widget, void *arg)
 759 {
 760         struct config_screen *screen = arg;
 761         int w_y, s_max;
 762
 763         w_y = widget_y(widget) + widget_focus_y(widget);
 764         s_max = getmaxy(screen->scr.sub_ncw) - 1;
 765
 766         if (w_y < screen->scroll_y)
 767                 screen->scroll_y = w_y;
 768
 769         else if (w_y + screen->scroll_y + 1 > s_max)
 770                 screen->scroll_y = 1 + w_y - s_max;
 771
 772         else
 773                 return;
 774
 775         pad_refresh(screen);
 776 }
 777
 778 static void config_screen_draw(struct config_screen *screen,
 779                 const struct config *config,
 780                 const struct system_info *sysinfo)
 781 {
 782         bool repost = false;
 783         int height;
 784
 785         /* The size of the pad we'll need depends on the number of interfaces.
 786          *
 787          * We use N_FIELDS (which is quite conservative, as some fields share
 788          * a line) as a base, then:
 789          * - add 6 (as the network select & boot device select fields take 3
 790          *   lines each),
 791          * - add n_interfaces for every field in the network select field, and
 792          * - add (n_blockdevs + n_interfaces) for every field in the boot device
 793          *   select field
 794          */
 795         height = N_FIELDS + 6;
 796         if (sysinfo) {
 797                 height += sysinfo->n_interfaces;
 798                 height += (sysinfo->n_blockdevs + sysinfo->n_interfaces);
 799         }
 800         if (!screen->pad || getmaxy(screen->pad) < height) {
 801                 if (screen->pad)
 802                         delwin(screen->pad);
 803                 screen->pad = newpad(height, COLS + 10);
 804         }
 805
 806         if (screen->widgetset) {
 807                 widgetset_unpost(screen->widgetset);
 808                 talloc_free(screen->widgetset);
 809                 repost = true;
 810         }
 811
 812         screen->widgetset = widgetset_create(screen, screen->scr.main_ncw,
 813                         screen->pad);
 814         widgetset_set_widget_focus(screen->widgetset,
 815                         config_screen_widget_focus, screen);
 816
 817         if (!config || !sysinfo) {
 818                 config_screen_setup_empty(screen);
 819         } else {
 820                 screen->net_conf_type = find_net_conf_type(config);
 821                 if (!config->autoboot_enabled)
 822                         screen->autoboot_type = AUTOBOOT_DISABLED;
 823                 else
 824                         screen->autoboot_type = config->boot_device ?
 825                                         AUTOBOOT_ONE : AUTOBOOT_ANY;
 826
 827                 config_screen_setup_widgets(screen, config, sysinfo);
 828                 config_screen_layout_widgets(screen);
 829         }
 830
 831         if (repost)
 832                 widgetset_post(screen->widgetset);
 833 }
 834
 835 void config_screen_update(struct config_screen *screen,
 836                 const struct config *config,
 837                 const struct system_info *sysinfo)
 838 {
 839         config_screen_draw(screen, config, sysinfo);
 840         pad_refresh(screen);
 841 }
 842
 843 static int config_screen_destroy(void *arg)
 844 {
 845         struct config_screen *screen = arg;
 846         if (screen->pad)
 847                 delwin(screen->pad);
 848         return 0;
 849 }
 850
 851 struct config_screen *config_screen_init(struct cui *cui,
 852                 const struct config *config,
 853                 const struct system_info *sysinfo,
 854                 void (*on_exit)(struct cui *))
 855 {
 856         struct config_screen *screen;
 857
 858         screen = talloc_zero(cui, struct config_screen);
 859         talloc_set_destructor(screen, config_screen_destroy);
 860         nc_scr_init(&screen->scr, pb_config_screen_sig, 0,
 861                         cui, config_screen_process_key,
 862                         config_screen_post, config_screen_unpost,
 863                         config_screen_resize);
 864
 865         screen->cui = cui;
 866         screen->on_exit = on_exit;
 867         screen->need_redraw = false;
 868         screen->label_x = 2;
 869         screen->field_x = 17;
 870
 871         screen->scr.frame.ltitle = talloc_strdup(screen,
 872                         _("Petitboot System Configuration"));
 873         screen->scr.frame.rtitle = NULL;
 874         screen->scr.frame.help = talloc_strdup(screen,
 875                         _("tab=next, shift+tab=previous, x=exit, h=help"));
 876         nc_scr_frame_draw(&screen->scr);
 877
 878         scrollok(screen->scr.sub_ncw, true);
 879
 880         config_screen_draw(screen, config, sysinfo);
 881
 882         return screen;
 883 }