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