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 "ui/common/discover-client.h"
  33 #include "nc-cui.h"
  34 #include "nc-config.h"
  35 #include "nc-widgets.h"
  36
  37 #define N_FIELDS        51
  38
  39 extern struct help_text config_help_text;
  40
  41 enum net_conf_type {
  42         NET_CONF_TYPE_DHCP_ALL,
  43         NET_CONF_TYPE_DHCP_ONE,
  44         NET_CONF_TYPE_STATIC,
  45 };
  46
  47 struct config_screen {
  48         struct nc_scr           scr;
  49         struct cui              *cui;
  50         struct nc_widgetset     *widgetset;
  51         WINDOW                  *pad;
  52
  53         bool                    exit;
  54         bool                    show_help;
  55         bool                    need_redraw;
  56         bool                    need_update;
  57
  58         void                    (*on_exit)(struct cui *);
  59
  60         int                     scroll_y;
  61
  62         int                     label_x;
  63         int                     field_x;
  64         int                     network_config_y;
  65
  66         enum net_conf_type      net_conf_type;
  67
  68         bool                    autoboot_enabled;
  69         bool                    ipmi_override;
  70         bool                    ipmi_mailbox;
  71         bool                    net_override;
  72
  73         struct {
  74                 struct nc_widget_label          *autoboot_l;
  75                 struct nc_widget_select         *autoboot_f;
  76                 struct nc_widget_label          *boot_order_l;
  77                 struct nc_widget_subset         *boot_order_f;
  78                 struct nc_widget_label          *boot_empty_l;
  79                 struct nc_widget_button         *boot_add_b;
  80                 struct nc_widget_button         *boot_none_b;
  81                 struct nc_widget_button         *boot_any_b;
  82                 struct nc_widget_textbox        *timeout_f;
  83                 struct nc_widget_label          *timeout_l;
  84                 struct nc_widget_label          *timeout_help_l;
  85
  86                 struct nc_widget_label          *ipmi_type_l;
  87                 struct nc_widget_label          *ipmi_clear_l;
  88                 struct nc_widget_button         *ipmi_clear_b;
  89
  90                 struct nc_widget_label          *ipmi_mailbox_l;
  91                 struct nc_widget_button         *ipmi_mailbox_b;
  92
  93                 struct nc_widget_label          *network_l;
  94                 struct nc_widget_select         *network_f;
  95
  96                 struct nc_widget_label          *iface_l;
  97                 struct nc_widget_select         *iface_f;
  98                 struct nc_widget_label          *ip_addr_l;
  99                 struct nc_widget_textbox        *ip_addr_f;
 100                 struct nc_widget_label          *ip_mask_l;
 101                 struct nc_widget_textbox        *ip_mask_f;
 102                 struct nc_widget_label          *ip_addr_mask_help_l;
 103                 struct nc_widget_label          *gateway_l;
 104                 struct nc_widget_textbox        *gateway_f;
 105                 struct nc_widget_label          *gateway_help_l;
 106                 struct nc_widget_label          *url_l;
 107                 struct nc_widget_textbox        *url_f;
 108                 struct nc_widget_label          *url_help_l;
 109                 struct nc_widget_label          *dns_l;
 110                 struct nc_widget_textbox        *dns_f;
 111                 struct nc_widget_label          *dns_dhcp_help_l;
 112                 struct nc_widget_label          *dns_help_l;
 113                 struct nc_widget_label          *http_proxy_l;
 114                 struct nc_widget_textbox        *http_proxy_f;
 115                 struct nc_widget_label          *https_proxy_l;
 116                 struct nc_widget_textbox        *https_proxy_f;
 117
 118                 struct nc_widget_label          *allow_write_l;
 119                 struct nc_widget_select         *allow_write_f;
 120                 struct nc_widget_label          *boot_console_l;
 121                 struct nc_widget_select         *boot_console_f;
 122                 struct nc_widget_label          *manual_console_l;
 123                 struct nc_widget_label          *current_console_l;
 124
 125                 struct nc_widget_button         *update_password_l;
 126
 127                 struct nc_widget_label          *net_override_l;
 128                 struct nc_widget_label          *safe_mode;
 129                 struct nc_widget_button         *ok_b;
 130                 struct nc_widget_button         *help_b;
 131                 struct nc_widget_button         *cancel_b;
 132         } widgets;
 133 };
 134
 135 static struct config_screen *config_screen_from_scr(struct nc_scr *scr)
 136 {
 137         struct config_screen *config_screen;
 138
 139         assert(scr->sig == pb_config_screen_sig);
 140         config_screen = (struct config_screen *)
 141                 ((char *)scr - (size_t)&((struct config_screen *)0)->scr);
 142         assert(config_screen->scr.sig == pb_config_screen_sig);
 143         return config_screen;
 144 }
 145
 146 static void pad_refresh(struct config_screen *screen)
 147 {
 148         int y, x, rows, cols;
 149
 150         getmaxyx(screen->scr.sub_ncw, rows, cols);
 151         getbegyx(screen->scr.sub_ncw, y, x);
 152
 153         prefresh(screen->pad, screen->scroll_y, 0, y, x, rows, cols);
 154 }
 155
 156 static void config_screen_process_key(struct nc_scr *scr, int key)
 157 {
 158         struct config_screen *screen = config_screen_from_scr(scr);
 159         bool handled;
 160
 161         handled = widgetset_process_key(screen->widgetset, key);
 162
 163         if (!handled) {
 164                 switch (key) {
 165                 case 'x':
 166                 case 27: /* esc */
 167                         screen->exit = true;
 168                         break;
 169                 case 'h':
 170                         screen->show_help = true;
 171                         break;
 172                 }
 173         }
 174
 175         if (screen->exit) {
 176                 screen->on_exit(screen->cui);
 177
 178         } else if (screen->show_help) {
 179                 screen->show_help = false;
 180                 screen->need_redraw = true;
 181                 cui_show_help(screen->cui, _("System Configuration"),
 182                                 &config_help_text);
 183
 184         } else if (handled && (screen->cui->current == scr)) {
 185                 pad_refresh(screen);
 186         }
 187 }
 188
 189 static void config_screen_resize(struct nc_scr *scr)
 190 {
 191         struct config_screen *screen = config_screen_from_scr(scr);
 192         (void)screen;
 193 }
 194
 195 static int config_screen_unpost(struct nc_scr *scr)
 196 {
 197         struct config_screen *screen = config_screen_from_scr(scr);
 198         widgetset_unpost(screen->widgetset);
 199         return 0;
 200 }
 201
 202 struct nc_scr *config_screen_scr(struct config_screen *screen)
 203 {
 204         return &screen->scr;
 205 }
 206
 207 static int screen_process_form(struct config_screen *screen)
 208 {
 209         const struct system_info *sysinfo = screen->cui->sysinfo;
 210         enum net_conf_type net_conf_type;
 211         struct interface_config *iface;
 212         bool allow_write;
 213         char *str, *end;
 214         struct config *config;
 215         int i, n_boot_opts, rc;
 216         unsigned int *order, idx;
 217         char mac[20];
 218
 219         config = config_copy(screen, screen->cui->config);
 220
 221         talloc_free(config->autoboot_opts);
 222         config->n_autoboot_opts = 0;
 223
 224         n_boot_opts = widget_subset_get_order(config, &order,
 225                                               screen->widgets.boot_order_f);
 226
 227         config->autoboot_enabled = widget_select_get_value(
 228                                                 screen->widgets.autoboot_f);
 229
 230         config->n_autoboot_opts = n_boot_opts;
 231         config->autoboot_opts = talloc_array(config, struct autoboot_option,
 232                                              n_boot_opts);
 233
 234         for (i = 0; i < n_boot_opts; i++) {
 235                 if (order[i] < sysinfo->n_blockdevs) {
 236                         /* disk uuid */
 237                         config->autoboot_opts[i].boot_type = BOOT_DEVICE_UUID;
 238                         config->autoboot_opts[i].uuid = talloc_strdup(config,
 239                                                         sysinfo->blockdevs[order[i]]->uuid);
 240                 } else if(order[i] < (sysinfo->n_blockdevs + sysinfo->n_interfaces)) {
 241                         /* net uuid */
 242                         order[i] -= sysinfo->n_blockdevs;
 243                         config->autoboot_opts[i].boot_type = BOOT_DEVICE_UUID;
 244                         mac_str(sysinfo->interfaces[order[i]]->hwaddr,
 245                                 sysinfo->interfaces[order[i]]->hwaddr_size,
 246                                 mac, sizeof(mac));
 247                         config->autoboot_opts[i].uuid = talloc_strdup(config, mac);
 248                 } else {
 249                         /* device type */
 250                         order[i] -= (sysinfo->n_blockdevs + sysinfo->n_interfaces);
 251                         config->autoboot_opts[i].boot_type = BOOT_DEVICE_TYPE;
 252                         config->autoboot_opts[i].type = order[i];
 253                 }
 254         }
 255
 256         str = widget_textbox_get_value(screen->widgets.timeout_f);
 257         if (str) {
 258                 unsigned long x;
 259                 errno = 0;
 260                 x = strtoul(str, &end, 10);
 261                 if (!errno && end != str)
 262                         config->autoboot_timeout_sec = x;
 263         }
 264
 265         net_conf_type = widget_select_get_value(screen->widgets.network_f);
 266
 267         /* if we don't have any network interfaces, prevent per-interface
 268          * configuration */
 269         if (sysinfo->n_interfaces == 0)
 270                 net_conf_type = NET_CONF_TYPE_DHCP_ALL;
 271
 272         if (net_conf_type == NET_CONF_TYPE_DHCP_ALL) {
 273                 config->network.n_interfaces = 0;
 274
 275         } else {
 276                 iface = talloc_zero(config, struct interface_config);
 277                 config->network.n_interfaces = 1;
 278                 config->network.interfaces = talloc_array(config,
 279                                 struct interface_config *, 1);
 280                 config->network.interfaces[0] = iface;
 281
 282                 /* copy hwaddr (from the sysinfo interface data) to
 283                  * the configuration */
 284                 idx = widget_select_get_value(screen->widgets.iface_f);
 285                 memcpy(iface->hwaddr, sysinfo->interfaces[idx]->hwaddr,
 286                                 sizeof(iface->hwaddr));
 287         }
 288
 289         if (net_conf_type == NET_CONF_TYPE_DHCP_ONE) {
 290                 iface->method = CONFIG_METHOD_DHCP;
 291         }
 292
 293         if (net_conf_type == NET_CONF_TYPE_STATIC) {
 294                 char *ip, *mask, *gateway, *url;
 295
 296                 ip = widget_textbox_get_value(screen->widgets.ip_addr_f);
 297                 mask = widget_textbox_get_value(screen->widgets.ip_mask_f);
 298                 gateway = widget_textbox_get_value(screen->widgets.gateway_f);
 299                 url = widget_textbox_get_value(screen->widgets.url_f);
 300
 301                 if (!ip || !*ip || !mask || !*mask) {
 302                         screen->scr.frame.status =
 303                                 _("No IP / mask values are set");
 304                         nc_scr_frame_draw(&screen->scr);
 305                         talloc_free(config);
 306                         return -1;
 307                 }
 308
 309                 iface->method = CONFIG_METHOD_STATIC;
 310                 iface->static_config.address = talloc_asprintf(iface, "%s/%s",
 311                                 ip, mask);
 312                 iface->static_config.gateway = talloc_strdup(iface, gateway);
 313                 iface->static_config.url = talloc_strdup(iface, url);
 314         }
 315
 316         str = widget_textbox_get_value(screen->widgets.dns_f);
 317         talloc_free(config->network.dns_servers);
 318         config->network.dns_servers = NULL;
 319         config->network.n_dns_servers = 0;
 320
 321         if (str && strlen(str)) {
 322                 char *dns, *tmp;
 323                 int i;
 324
 325                 for (;;) {
 326                         dns = strtok_r(str, " \t", &tmp);
 327
 328                         if (!dns)
 329                                 break;
 330
 331                         i = config->network.n_dns_servers++;
 332                         config->network.dns_servers = talloc_realloc(config,
 333                                         config->network.dns_servers,
 334                                         const char *,
 335                                         config->network.n_dns_servers);
 336                         config->network.dns_servers[i] =
 337                                 talloc_strdup(config, dns);
 338
 339                         str = NULL;
 340                 }
 341         }
 342
 343         talloc_free(config->http_proxy);
 344         talloc_free(config->https_proxy);
 345         str = widget_textbox_get_value(screen->widgets.http_proxy_f);
 346         config->http_proxy = talloc_strdup(config, str);
 347         str = widget_textbox_get_value(screen->widgets.https_proxy_f);
 348         config->https_proxy = talloc_strdup(config, str);
 349
 350         allow_write = widget_select_get_value(screen->widgets.allow_write_f);
 351         if (allow_write != config->allow_writes)
 352                 config->allow_writes = allow_write;
 353
 354         if (config->n_consoles && !config->manual_console) {
 355                 idx = widget_select_get_value(screen->widgets.boot_console_f);
 356                 if (!config->boot_console) {
 357                         config->boot_console = talloc_strdup(config,
 358                                                         config->consoles[idx]);
 359                 } else if (strncmp(config->boot_console, config->consoles[idx],
 360                                 strlen(config->boot_console)) != 0) {
 361                         talloc_free(config->boot_console);
 362                         config->boot_console = talloc_strdup(config,
 363                                                         config->consoles[idx]);
 364                 }
 365         }
 366
 367         config->safe_mode = false;
 368         rc = cui_send_config(screen->cui, config);
 369         talloc_free(config);
 370
 371         if (rc)
 372                 pb_log("cui_send_config failed!\n");
 373         else
 374                 pb_debug("config sent!\n");
 375
 376         return 0;
 377 }
 378
 379 static void config_screen_config_cb(struct nc_scr *scr)
 380 {
 381         struct config_screen *screen = config_screen_from_scr(scr);
 382
 383         if (!screen_process_form(screen))
 384                 screen->exit = true;
 385 }
 386
 387 #ifdef CRYPT_SUPPORT
 388 static void password_click(void *arg)
 389 {
 390         struct config_screen *screen = arg;
 391
 392         screen->need_update = true;
 393         cui_show_auth(screen->cui, screen->scr.main_ncw, true, NULL);
 394 }
 395 #endif
 396
 397 static void ok_click(void *arg)
 398 {
 399         struct config_screen *screen = arg;
 400
 401         if (discover_client_authenticated(screen->cui->client)) {
 402                 if (screen_process_form(screen))
 403                         /* errors are written to the status line, so we'll need
 404                          * to refresh */
 405                         wrefresh(screen->scr.main_ncw);
 406                 else
 407                         screen->exit = true;
 408         } else {
 409                 cui_show_auth(screen->cui, screen->scr.main_ncw, false,
 410                                 config_screen_config_cb);
 411         }
 412 }
 413
 414 static void help_click(void *arg)
 415 {
 416         struct config_screen *screen = arg;
 417         screen->show_help = true;
 418 }
 419
 420 static void cancel_click(void *arg)
 421 {
 422         struct config_screen *screen = arg;
 423         screen->exit = true;
 424 }
 425
 426 static void ipmi_clear_click(void *arg)
 427 {
 428         struct config_screen *screen = arg;
 429         struct config *config;
 430         int rc;
 431
 432         config = config_copy(screen, screen->cui->config);
 433         config->ipmi_bootdev = IPMI_BOOTDEV_INVALID;
 434         config->safe_mode = false;
 435
 436         rc = cui_send_config(screen->cui, config);
 437         talloc_free(config);
 438
 439         if (rc)
 440                 pb_log("cui_send_config failed!\n");
 441         else
 442                 pb_debug("config sent!\n");
 443         screen->exit = true;
 444 }
 445
 446 static void ipmi_clear_mailbox_click(void *arg)
 447 {
 448         struct config_screen *screen = arg;
 449         struct config *config;
 450         int rc;
 451
 452         config = config_copy(screen, screen->cui->config);
 453         config->ipmi_bootdev_mailbox = false;
 454         config->safe_mode = false;
 455
 456         rc = cui_send_config(screen->cui, config);
 457         talloc_free(config);
 458
 459         if (rc)
 460                 pb_log("cui_send_config failed!\n");
 461         else
 462                 pb_debug("config sent!\n");
 463         screen->exit = true;
 464 }
 465
 466
 467 static int layout_pair(struct config_screen *screen, int y,
 468                 struct nc_widget_label *label,
 469                 struct nc_widget *field)
 470 {
 471         struct nc_widget *label_w = widget_label_base(label);
 472         widget_move(label_w, y, screen->label_x);
 473         widget_move(field, y, screen->field_x);
 474         return max(widget_height(label_w), widget_height(field));
 475 }
 476
 477 static void config_screen_layout_widgets(struct config_screen *screen)
 478 {
 479         struct nc_widget *wl, *wf, *wh;
 480         int y, x, help_x;
 481         bool show;
 482
 483         y = 1;
 484         /* currently, the longest label we have is the DNS-servers
 485          * widget, so layout our screen based on that */
 486         help_x = screen->field_x + 2 +
 487                 widget_width(widget_textbox_base(screen->widgets.dns_f));
 488
 489         wl = widget_label_base(screen->widgets.autoboot_l);
 490         widget_set_visible(wl, true);
 491         widget_move(wl, y, screen->label_x);
 492
 493         wf = widget_select_base(screen->widgets.autoboot_f);
 494         widget_set_visible(wf, true);
 495         widget_move(wf, y, screen->field_x);
 496         y += widget_height(wf);
 497
 498         show = screen->autoboot_enabled;
 499
 500         if (show)
 501                 y += 1;
 502
 503         wl = widget_label_base(screen->widgets.boot_order_l);
 504         widget_set_visible(wl, show);
 505         widget_move(wl, y, screen->label_x);
 506
 507         wf = widget_subset_base(screen->widgets.boot_order_f);
 508         widget_move(wf, y, screen->field_x);
 509         wl = widget_label_base(screen->widgets.boot_empty_l);
 510         widget_move(wl, y, screen->field_x);
 511
 512         if (widget_subset_height(screen->widgets.boot_order_f)) {
 513                 widget_set_visible(wl, false);
 514                 widget_set_visible(wf, show);
 515                 y += show ? widget_height(wf) : 0;
 516         } else {
 517                 widget_set_visible(wl, show);
 518                 widget_set_visible(wf, false);
 519                 y += show ? 1 : 0;
 520         }
 521
 522         if (show) {
 523                 y += 1;
 524                 widget_move(widget_button_base(screen->widgets.boot_add_b),
 525                                 y++, screen->field_x);
 526                 widget_move(widget_button_base(screen->widgets.boot_any_b),
 527                                 y++, screen->field_x);
 528                 widget_move(widget_button_base(screen->widgets.boot_none_b),
 529                                 y, screen->field_x);
 530         }
 531
 532         wf = widget_button_base(screen->widgets.boot_add_b);
 533         if (widget_subset_n_inactive(screen->widgets.boot_order_f) && show)
 534                 widget_set_visible(wf, true);
 535         else
 536                 widget_set_visible(wf, false);
 537
 538         if (show)
 539                 y += 2;
 540
 541         widget_set_visible(widget_button_base(screen->widgets.boot_any_b), show);
 542         widget_set_visible(widget_button_base(screen->widgets.boot_none_b), show);
 543
 544         wf = widget_textbox_base(screen->widgets.timeout_f);
 545         wl = widget_label_base(screen->widgets.timeout_l);
 546         wh = widget_label_base(screen->widgets.timeout_help_l);
 547         widget_set_visible(wl, screen->autoboot_enabled);
 548         widget_set_visible(wf, screen->autoboot_enabled);
 549         widget_set_visible(wh, screen->autoboot_enabled);
 550         if (screen->autoboot_enabled) {
 551                 widget_set_visible(wh, screen->autoboot_enabled);
 552                 widget_move(wl, y, screen->label_x);
 553                 widget_move(wf, y, screen->field_x);
 554                 widget_move(wh, y, screen->field_x + widget_width(wf) + 1);
 555                 y += 2;
 556         } else
 557                 y += 1;
 558
 559         if (screen->ipmi_override) {
 560                 wl = widget_label_base(screen->widgets.ipmi_type_l);
 561                 widget_set_visible(wl, true);
 562                 widget_move(wl, y, screen->label_x);
 563                 y += 1;
 564
 565                 wl = widget_label_base(screen->widgets.ipmi_clear_l);
 566                 wf = widget_button_base(screen->widgets.ipmi_clear_b);
 567                 widget_set_visible(wl, true);
 568                 widget_set_visible(wf, true);
 569                 widget_move(wl, y, screen->label_x);
 570                 widget_move(wf, y, screen->field_x);
 571                 y += 1;
 572         }
 573
 574         if (screen->ipmi_mailbox) {
 575                 wl = widget_label_base(screen->widgets.ipmi_mailbox_l);
 576                 widget_set_visible(wl, true);
 577                 widget_move(wl, y, screen->label_x);
 578                 y += 1;
 579
 580                 wf = widget_button_base(screen->widgets.ipmi_mailbox_b);
 581                 widget_set_visible(wf, true);
 582                 widget_move(wf, y, screen->field_x);
 583                 y += 1;
 584         }
 585
 586         y += 1;
 587
 588         y += layout_pair(screen, y, screen->widgets.network_l,
 589                         widget_select_base(screen->widgets.network_f));
 590
 591         y += 1;
 592
 593         /* conditionally show iface select */
 594         wl = widget_label_base(screen->widgets.iface_l);
 595         wf = widget_select_base(screen->widgets.iface_f);
 596
 597         show = screen->net_conf_type == NET_CONF_TYPE_DHCP_ONE ||
 598                 screen->net_conf_type == NET_CONF_TYPE_STATIC;
 599
 600         widget_set_visible(wl, show);
 601         widget_set_visible(wf, show);
 602
 603         if (show)
 604                 y += layout_pair(screen, y, screen->widgets.iface_l, wf) + 1;
 605
 606         /* conditionally show static IP params */
 607         show = screen->net_conf_type == NET_CONF_TYPE_STATIC;
 608
 609         wl = widget_label_base(screen->widgets.ip_addr_l);
 610         wf = widget_textbox_base(screen->widgets.ip_addr_f);
 611         widget_set_visible(wl, show);
 612         widget_set_visible(wf, show);
 613         x = screen->field_x + widget_width(wf) + 1;
 614
 615         if (show)
 616                 layout_pair(screen, y, screen->widgets.ip_addr_l, wf);
 617
 618         wl = widget_label_base(screen->widgets.ip_mask_l);
 619         wf = widget_textbox_base(screen->widgets.ip_mask_f);
 620         widget_set_visible(wl, show);
 621         widget_set_visible(wf, show);
 622
 623         if (show) {
 624                 widget_move(wl, y, x);
 625                 widget_move(wf, y, x + 2);
 626         }
 627
 628         /* help for IP/mask */
 629         wh = widget_label_base(screen->widgets.ip_addr_mask_help_l);
 630         widget_set_visible(wh, show);
 631         if (show) {
 632                 widget_move(wh, y, help_x);
 633                 y++;
 634         }
 635
 636         wl = widget_label_base(screen->widgets.gateway_l);
 637         wf = widget_textbox_base(screen->widgets.gateway_f);
 638         wh = widget_label_base(screen->widgets.gateway_help_l);
 639         widget_set_visible(wl, show);
 640         widget_set_visible(wf, show);
 641         widget_set_visible(wh, show);
 642
 643         if (show) {
 644                 layout_pair(screen, y, screen->widgets.gateway_l, wf);
 645                 widget_move(wh, y, help_x);
 646                 y++;
 647         }
 648
 649         wl = widget_label_base(screen->widgets.url_l);
 650         wf = widget_textbox_base(screen->widgets.url_f);
 651         wh = widget_label_base(screen->widgets.url_help_l);
 652         widget_set_visible(wl, show);
 653         widget_set_visible(wf, show);
 654         widget_set_visible(wh, show);
 655
 656         if (show) {
 657                 layout_pair(screen, y, screen->widgets.url_l, wf);
 658                 widget_move(wh, y, help_x);
 659                 y++;
 660         }
 661
 662         wh = widget_label_base(screen->widgets.dns_help_l);
 663         layout_pair(screen, y, screen->widgets.dns_l,
 664                         widget_textbox_base(screen->widgets.dns_f));
 665         widget_move(wh, y, help_x);
 666         y++;
 667
 668         /* we show the DNS/DHCP help if we're configuring DHCP */
 669         show = screen->net_conf_type != NET_CONF_TYPE_STATIC;
 670         wl = widget_label_base(screen->widgets.dns_dhcp_help_l);
 671         widget_set_visible(wl, show);
 672         if (show) {
 673                 widget_move(wl, y, screen->field_x);
 674                 y += 1;
 675         }
 676
 677         wf = widget_textbox_base(screen->widgets.http_proxy_f);
 678         layout_pair(screen, y, screen->widgets.http_proxy_l, wf);
 679         y++;
 680         wf = widget_textbox_base(screen->widgets.https_proxy_f);
 681         layout_pair(screen, y, screen->widgets.https_proxy_l, wf);
 682         y++;
 683
 684         y += 1;
 685
 686         layout_pair(screen, y, screen->widgets.allow_write_l,
 687                     widget_select_base(screen->widgets.allow_write_f));
 688         y += widget_height(widget_select_base(screen->widgets.allow_write_f));
 689
 690         y += 1;
 691
 692         if (screen->widgets.manual_console_l) {
 693                 layout_pair(screen, y++, screen->widgets.boot_console_l,
 694                         widget_label_base(screen->widgets.manual_console_l));
 695                 widget_move(widget_label_base(screen->widgets.current_console_l),
 696                         y, screen->field_x);
 697                 widget_set_visible(widget_select_base(
 698                         screen->widgets.boot_console_f), false);
 699                 y += 2;
 700         } else if (widget_height(widget_select_base(screen->widgets.boot_console_f))) {
 701                 layout_pair(screen, y, screen->widgets.boot_console_l,
 702                             widget_select_base(screen->widgets.boot_console_f));
 703                 y += widget_height(widget_select_base(screen->widgets.boot_console_f));
 704                 widget_move(widget_label_base(screen->widgets.current_console_l),
 705                         y, screen->field_x);
 706                 y += 2;
 707         } else {
 708                 widget_set_visible(widget_label_base(
 709                                         screen->widgets.boot_console_l), false);
 710                 widget_set_visible(widget_select_base(
 711                                         screen->widgets.boot_console_f), false);
 712                 widget_set_visible(widget_label_base(
 713                                         screen->widgets.current_console_l), false);
 714         }
 715
 716 #ifdef CRYPT_SUPPORT
 717         widget_move(widget_button_base(screen->widgets.update_password_l),
 718                         y, screen->field_x);
 719         y += 2;
 720 #endif
 721
 722         if (screen->net_override) {
 723                 widget_move(widget_label_base(screen->widgets.net_override_l),
 724                                 y, screen->label_x);
 725                 widget_set_visible(widget_label_base(screen->widgets.net_override_l),
 726                                         true);
 727                 y += 1;
 728         }
 729
 730         if (screen->cui->config->safe_mode) {
 731                 widget_move(widget_label_base(screen->widgets.safe_mode),
 732                         y, screen->label_x);
 733                 widget_set_visible(widget_label_base(screen->widgets.safe_mode),
 734                                         true);
 735                 y += 1;
 736         }
 737
 738         widget_move(widget_button_base(screen->widgets.ok_b),
 739                         y, screen->field_x);
 740         widget_move(widget_button_base(screen->widgets.help_b),
 741                         y, screen->field_x + 14);
 742         widget_move(widget_button_base(screen->widgets.cancel_b),
 743                         y, screen->field_x + 28);
 744 }
 745
 746 static void config_screen_network_change(void *arg, int value)
 747 {
 748         struct config_screen *screen = arg;
 749         screen->net_conf_type = value;
 750         widgetset_unpost(screen->widgetset);
 751         config_screen_layout_widgets(screen);
 752         widgetset_post(screen->widgetset);
 753 }
 754
 755 static void config_screen_boot_order_change(void *arg, int value)
 756 {
 757         (void)value;
 758         struct config_screen *screen = arg;
 759         widgetset_unpost(screen->widgetset);
 760         config_screen_layout_widgets(screen);
 761         widgetset_post(screen->widgetset);
 762 }
 763
 764 static void config_screen_autoboot_change(void *arg, int value)
 765 {
 766         struct config_screen *screen = arg;
 767         screen->autoboot_enabled = !!value;
 768         widgetset_unpost(screen->widgetset);
 769         config_screen_layout_widgets(screen);
 770         widgetset_post(screen->widgetset);
 771 }
 772
 773 static void config_screen_add_device(void *arg)
 774 {
 775         struct config_screen *screen = arg;
 776
 777         cui_show_subset(screen->cui, _("Select a boot device to add"),
 778                         screen->widgets.boot_order_f);
 779 }
 780
 781 static void config_screen_autoboot_none(void *arg)
 782 {
 783         struct config_screen *screen = arg;
 784         struct nc_widget_subset *subset = screen->widgets.boot_order_f;
 785
 786         widget_subset_clear_active(subset);
 787
 788         widgetset_unpost(screen->widgetset);
 789         config_screen_layout_widgets(screen);
 790         widgetset_post(screen->widgetset);
 791 }
 792
 793 static void config_screen_autoboot_any(void *arg)
 794 {
 795         struct config_screen *screen = arg;
 796         const struct system_info *sysinfo = screen->cui->sysinfo;
 797         struct nc_widget_subset *subset = screen->widgets.boot_order_f;
 798         int idx;
 799
 800         widget_subset_clear_active(subset);
 801
 802         idx = sysinfo->n_blockdevs + sysinfo->n_interfaces + DEVICE_TYPE_ANY;
 803
 804         widget_subset_make_active(screen->widgets.boot_order_f, idx);
 805
 806         screen->autoboot_enabled = true;
 807
 808         widgetset_unpost(screen->widgetset);
 809         config_screen_layout_widgets(screen);
 810         widgetset_post(screen->widgetset);
 811 }
 812
 813 static void config_screen_update_subset(void *arg,
 814                         struct nc_widget_subset *subset, int idx)
 815 {
 816         struct config_screen *screen = arg;
 817
 818         if (idx >= 0)
 819                 widget_subset_make_active(subset, idx);
 820         if (!screen->autoboot_enabled)
 821                 screen->autoboot_enabled = true;
 822         config_screen_layout_widgets(screen);
 823 }
 824
 825 static struct interface_config *first_active_interface(
 826                 const struct config *config)
 827 {
 828         unsigned int i;
 829
 830         for (i = 0; i < config->network.n_interfaces; i++) {
 831                 if (config->network.interfaces[i]->ignore)
 832                         continue;
 833                 return config->network.interfaces[i];
 834         }
 835         return NULL;
 836 }
 837
 838 static enum net_conf_type find_net_conf_type(const struct config *config)
 839 {
 840         struct interface_config *ifcfg;
 841
 842         ifcfg = first_active_interface(config);
 843
 844         if (!ifcfg)
 845                 return NET_CONF_TYPE_DHCP_ALL;
 846
 847         else if (ifcfg->method == CONFIG_METHOD_DHCP)
 848                 return NET_CONF_TYPE_DHCP_ONE;
 849
 850         else if (ifcfg->method == CONFIG_METHOD_STATIC)
 851                 return NET_CONF_TYPE_STATIC;
 852
 853         assert(0);
 854         return NET_CONF_TYPE_DHCP_ALL;
 855 }
 856
 857 static void config_screen_setup_empty(struct config_screen *screen)
 858 {
 859         widget_new_label(screen->widgetset, 2, screen->field_x,
 860                         _("Waiting for configuration data..."));
 861         screen->widgets.cancel_b = widget_new_button(screen->widgetset,
 862                         4, screen->field_x, 9, _("Cancel"),
 863                         cancel_click, screen);
 864 }
 865
 866 static int find_autoboot_idx(const struct system_info *sysinfo,
 867                 struct autoboot_option *opt)
 868 {
 869         unsigned int i;
 870
 871         if (opt->boot_type == BOOT_DEVICE_TYPE)
 872                 return sysinfo->n_blockdevs + sysinfo->n_interfaces + opt->type;
 873
 874         for (i = 0; i < sysinfo->n_blockdevs; i++) {
 875                 if (!strcmp(sysinfo->blockdevs[i]->uuid, opt->uuid))
 876                         return i;
 877         }
 878
 879         for (i = 0; i < sysinfo->n_interfaces; i++) {
 880                 struct interface_info *info = sysinfo->interfaces[i];
 881                 char mac[20];
 882
 883                 mac_str(info->hwaddr, info->hwaddr_size, mac, sizeof(mac));
 884
 885                 if (!strcmp(mac, opt->uuid))
 886                         return sysinfo->n_blockdevs + i;
 887         }
 888
 889         return -1;
 890 }
 891
 892 static void config_screen_setup_widgets(struct config_screen *screen,
 893                 const struct config *config,
 894                 const struct system_info *sysinfo)
 895 {
 896         struct nc_widgetset *set = screen->widgetset;
 897         struct interface_config *ifcfg;
 898         char *str, *ip, *mask, *gw, *url, *tty, *label;
 899         enum net_conf_type type;
 900         unsigned int i;
 901         int add_len, clear_len, any_len, min_len = 20;
 902         bool found;
 903
 904         build_assert(sizeof(screen->widgets) / sizeof(struct widget *)
 905                         == N_FIELDS);
 906
 907         type = screen->net_conf_type;
 908         ifcfg = first_active_interface(config);
 909
 910         screen->autoboot_enabled = config->autoboot_enabled;
 911
 912         screen->widgets.autoboot_l = widget_new_label(set, 0, 0,
 913                                         _("Autoboot:"));
 914         screen->widgets.autoboot_f = widget_new_select(set, 0, 0,
 915                                         COLS - screen->field_x - 1);
 916
 917         widget_select_add_option(screen->widgets.autoboot_f, 0, _("Disabled"),
 918                                  !screen->autoboot_enabled);
 919         widget_select_add_option(screen->widgets.autoboot_f, 1, _("Enabled"),
 920                                  screen->autoboot_enabled);
 921
 922         widget_select_on_change(screen->widgets.autoboot_f,
 923                         config_screen_autoboot_change, screen);
 924
 925         add_len = max(min_len, strncols(_("Add Device")));
 926         clear_len = max(min_len, strncols(_("Clear")));
 927         any_len = max(min_len, strncols(_("Clear & Boot Any")));
 928
 929         screen->widgets.boot_add_b = widget_new_button(set, 0, 0, add_len,
 930                                         _("Add Device"),
 931                                         config_screen_add_device, screen);
 932
 933         screen->widgets.boot_none_b = widget_new_button(set, 0, 0, clear_len,
 934                                         _("Clear"),
 935                                         config_screen_autoboot_none, screen);
 936
 937         screen->widgets.boot_any_b = widget_new_button(set, 0, 0, any_len,
 938                                         _("Clear & Boot Any"),
 939                                         config_screen_autoboot_any, screen);
 940
 941         screen->widgets.boot_order_l = widget_new_label(set, 0, 0,
 942                                         _("Boot Order:"));
 943         screen->widgets.boot_order_f = widget_new_subset(set, 0, 0,
 944                                         COLS - screen->field_x,
 945                                         config_screen_update_subset);
 946         screen->widgets.boot_empty_l = widget_new_label(set, 0, 0,
 947                                         _("(None)"));
 948
 949         widget_subset_on_change(screen->widgets.boot_order_f,
 950                         config_screen_boot_order_change, screen);
 951
 952         for (i = 0; i < sysinfo->n_blockdevs; i++) {
 953                 struct blockdev_info *bd = sysinfo->blockdevs[i];
 954
 955                 label = talloc_asprintf(screen, _("disk: %s [uuid: %s]"),
 956                                 bd->name, bd->uuid);
 957
 958                 widget_subset_add_option(screen->widgets.boot_order_f, label);
 959         }
 960
 961         for (i = 0; i < sysinfo->n_interfaces; i++) {
 962                 struct interface_info *info = sysinfo->interfaces[i];
 963                 char mac[20];
 964
 965                 mac_str(info->hwaddr, info->hwaddr_size, mac, sizeof(mac));
 966
 967                 label = talloc_asprintf(screen, _("net:  %s [mac: %s]"),
 968                                 info->name, mac);
 969
 970                 widget_subset_add_option(screen->widgets.boot_order_f, label);
 971         }
 972
 973         for (i = DEVICE_TYPE_NETWORK; i < DEVICE_TYPE_UNKNOWN; i++) {
 974
 975                 if (i == DEVICE_TYPE_ANY)
 976                         label = talloc_asprintf(screen, _("Any Device"));
 977                 else
 978                         label = talloc_asprintf(screen, _("Any %s device"),
 979                                                 device_type_display_name(i));
 980
 981                 widget_subset_add_option(screen->widgets.boot_order_f, label);
 982         }
 983
 984         for (i = 0; i < config->n_autoboot_opts; i++) {
 985                 struct autoboot_option *opt = &config->autoboot_opts[i];
 986                 int idx;
 987
 988                 idx = find_autoboot_idx(sysinfo, opt);
 989
 990                 if (idx >= 0) {
 991                         widget_subset_make_active(screen->widgets.boot_order_f,
 992                                                   idx);
 993                 } else {
 994                         if (opt->boot_type == BOOT_DEVICE_TYPE)
 995                                 pb_log("%s: Unknown autoboot option: %d\n",
 996                                        __func__, opt->type);
 997                         else
 998                                 pb_log("%s: Unknown autoboot UUID: %s\n",
 999                                        __func__, opt->uuid);
1000                 }
1001         }
1002
1003
1004         str = talloc_asprintf(screen, "%d", config->autoboot_timeout_sec);
1005         screen->widgets.timeout_l = widget_new_label(set, 0, 0, _("Timeout:"));
1006         screen->widgets.timeout_f = widget_new_textbox(set, 0, 0, 5, str);
1007         screen->widgets.timeout_help_l = widget_new_label(set, 0, 0,
1008                                         _("seconds"));
1009
1010         widget_textbox_set_fixed_size(screen->widgets.timeout_f);
1011         widget_textbox_set_validator_integer(screen->widgets.timeout_f, 0, 999);
1012
1013         if (config->ipmi_bootdev) {
1014                 label = talloc_asprintf(screen,
1015                                 _("%s IPMI boot option: %s"),
1016                                 config->ipmi_bootdev_persistent ?
1017                                 _("Persistent") : _("Temporary"),
1018                                 ipmi_bootdev_display_name(config->ipmi_bootdev));
1019                 screen->widgets.ipmi_type_l = widget_new_label(set, 0, 0,
1020                                                         label);
1021                 screen->widgets.ipmi_clear_l = widget_new_label(set, 0, 0,
1022                                                         _("Clear option:"));
1023                 screen->widgets.ipmi_clear_b = widget_new_button(set, 0, 0,
1024                                 strncols(_("Clear IPMI override now")) + 10,
1025                                 _("Clear IPMI override now"),
1026                                 ipmi_clear_click, screen);
1027                 screen->ipmi_override = true;
1028         }
1029
1030         if (config->ipmi_bootdev_mailbox) {
1031                 screen->widgets.ipmi_mailbox_l = widget_new_label(set, 0, 0,
1032                                 _("IPMI boot order mailbox config present"));
1033                 screen->widgets.ipmi_mailbox_b = widget_new_button(set, 0, 0,
1034                                 strncols(_("Clear IPMI boot order mailbox now")) + 10,
1035                                 _("Clear IPMI boot order mailbox now"),
1036                                 ipmi_clear_mailbox_click, screen);
1037                 screen->ipmi_mailbox = true;
1038         }
1039
1040         screen->widgets.network_l = widget_new_label(set, 0, 0, _("Network:"));
1041         screen->widgets.network_f = widget_new_select(set, 0, 0,
1042                                                 COLS - screen->field_x - 1);
1043
1044         widget_select_add_option(screen->widgets.network_f,
1045                                         NET_CONF_TYPE_DHCP_ALL,
1046                                         _("DHCP on all active interfaces"),
1047                                         type == NET_CONF_TYPE_DHCP_ALL);
1048         widget_select_add_option(screen->widgets.network_f,
1049                                         NET_CONF_TYPE_DHCP_ONE,
1050                                         _("DHCP on a specific interface"),
1051                                         type == NET_CONF_TYPE_DHCP_ONE);
1052         widget_select_add_option(screen->widgets.network_f,
1053                                         NET_CONF_TYPE_STATIC,
1054                                         _("Static IP configuration"),
1055                                         type == NET_CONF_TYPE_STATIC);
1056
1057         widget_select_on_change(screen->widgets.network_f,
1058                         config_screen_network_change, screen);
1059
1060         screen->widgets.iface_l = widget_new_label(set, 0, 0, _("Device:"));
1061         screen->widgets.iface_f = widget_new_select(set, 0, 0, 50);
1062
1063         for (i = 0; i < sysinfo->n_interfaces; i++) {
1064                 struct interface_info *info = sysinfo->interfaces[i];
1065                 char str[50], mac[20];
1066                 bool is_default;
1067
1068                 is_default = ifcfg && !memcmp(ifcfg->hwaddr, info->hwaddr,
1069                                         sizeof(ifcfg->hwaddr));
1070
1071                 mac_str(info->hwaddr, info->hwaddr_size, mac, sizeof(mac));
1072                 snprintf(str, sizeof(str), "%s [%s, %s]", info->name, mac,
1073                                 info->link ? _("link up") : _("link down"));
1074
1075                 widget_select_add_option(screen->widgets.iface_f,
1076                                                 i, str, is_default);
1077         }
1078
1079         url = gw = ip = mask = NULL;
1080         if (ifcfg && ifcfg->method == CONFIG_METHOD_STATIC) {
1081                 char *sep;
1082
1083                 str = talloc_strdup(screen, ifcfg->static_config.address);
1084                 sep = strchr(str, '/');
1085                 ip = str;
1086
1087                 if (sep) {
1088                         *sep = '\0';
1089                         mask = sep + 1;
1090                 }
1091                 gw = ifcfg->static_config.gateway;
1092                 url = ifcfg->static_config.url;
1093         }
1094
1095         screen->net_override = ifcfg && ifcfg->override;
1096         if (screen->net_override) {
1097                 screen->widgets.net_override_l = widget_new_label(set, 0, 0,
1098                         _("Network Override Active! 'OK' will overwrite interface config"));
1099         }
1100
1101         screen->widgets.ip_addr_l = widget_new_label(set, 0, 0, _("IP/mask:"));
1102         screen->widgets.ip_addr_f = widget_new_textbox(set, 0, 0, 16, ip);
1103         screen->widgets.ip_mask_l = widget_new_label(set, 0, 0, "/");
1104         screen->widgets.ip_mask_f = widget_new_textbox(set, 0, 0, 3, mask);
1105         screen->widgets.ip_addr_mask_help_l =
1106                 widget_new_label(set, 0, 0, _("(eg. 192.168.0.10 / 24)"));
1107
1108         widget_textbox_set_fixed_size(screen->widgets.ip_addr_f);
1109         widget_textbox_set_fixed_size(screen->widgets.ip_mask_f);
1110         widget_textbox_set_validator_ip(screen->widgets.ip_addr_f);
1111         widget_textbox_set_validator_integer(screen->widgets.ip_mask_f, 1, 127);
1112
1113         screen->widgets.gateway_l = widget_new_label(set, 0, 0, _("Gateway:"));
1114         screen->widgets.gateway_f = widget_new_textbox(set, 0, 0, 16, gw);
1115         screen->widgets.gateway_help_l =
1116                 widget_new_label(set, 0, 0, _("(eg. 192.168.0.1)"));
1117
1118         widget_textbox_set_fixed_size(screen->widgets.gateway_f);
1119         widget_textbox_set_validator_ip(screen->widgets.gateway_f);
1120
1121         screen->widgets.url_l = widget_new_label(set, 0, 0, _("URL:"));
1122         screen->widgets.url_f = widget_new_textbox(set, 0, 0, 32, url);
1123         widget_textbox_set_validator_url(screen->widgets.url_f);
1124         screen->widgets.url_help_l =
1125                 widget_new_label(set, 0, 0, _("(eg. tftp://)"));
1126
1127         str = talloc_strdup(screen, "");
1128         for (i = 0; i < config->network.n_dns_servers; i++) {
1129                 str = talloc_asprintf_append(str, "%s%s",
1130                                 (i == 0) ? "" : " ",
1131                                 config->network.dns_servers[i]);
1132         }
1133
1134         screen->widgets.dns_l = widget_new_label(set, 0, 0,
1135                                         _("DNS Server(s):"));
1136         screen->widgets.dns_f = widget_new_textbox(set, 0, 0, 32, str);
1137         screen->widgets.dns_help_l =
1138                 widget_new_label(set, 0, 0, _("(eg. 192.168.0.2)"));
1139
1140         widget_textbox_set_validator_ip_multi(screen->widgets.dns_f);
1141
1142         screen->widgets.dns_dhcp_help_l = widget_new_label(set, 0, 0,
1143                         _("(if not provided by DHCP server)"));
1144
1145         screen->widgets.http_proxy_l = widget_new_label(set, 0, 0,
1146                                         _("HTTP Proxy:"));
1147         screen->widgets.http_proxy_f = widget_new_textbox(set, 0, 0, 32,
1148                                                 config->http_proxy);
1149         screen->widgets.https_proxy_l = widget_new_label(set, 0, 0,
1150                                         _("HTTPS Proxy:"));
1151         screen->widgets.https_proxy_f = widget_new_textbox(set, 0, 0, 32,
1152                                                 config->https_proxy);
1153
1154         if (config->safe_mode)
1155                 screen->widgets.safe_mode = widget_new_label(set, 0, 0,
1156                          _("Selecting 'OK' will exit safe mode"));
1157
1158         screen->widgets.allow_write_l = widget_new_label(set, 0, 0,
1159                         _("Disk R/W:"));
1160         screen->widgets.allow_write_f = widget_new_select(set, 0, 0,
1161                                                 COLS - screen->field_x - 1);
1162
1163         widget_select_add_option(screen->widgets.allow_write_f, 0,
1164                                 _("Prevent all writes to disk"),
1165                                 !config->allow_writes);
1166
1167         widget_select_add_option(screen->widgets.allow_write_f, 1,
1168                                 _("Allow bootloader scripts to modify disks"),
1169                                 config->allow_writes);
1170
1171         screen->widgets.boot_console_l = widget_new_label(set, 0, 0,
1172                         _("Boot console:"));
1173         screen->widgets.boot_console_f = widget_new_select(set, 0, 0,
1174                                                 COLS - screen->field_x - 1);
1175
1176         for (i = 0; i < config->n_consoles; i++){
1177                 found = config->boot_console &&
1178                         strncmp(config->boot_console, config->consoles[i],
1179                                 strlen(config->boot_console)) == 0;
1180                 widget_select_add_option(screen->widgets.boot_console_f, i,
1181                                         config->consoles[i], found);
1182         }
1183
1184         if (config->manual_console) {
1185                 label = talloc_asprintf(screen, _("Manually set: '%s'"),
1186                                         config->boot_console);
1187                 screen->widgets.manual_console_l = widget_new_label(set, 0, 0, label);
1188         }
1189
1190         tty = talloc_asprintf(screen, _("Current interface: %s"),
1191                                 ttyname(STDIN_FILENO));
1192         screen->widgets.current_console_l = widget_new_label(set, 0 , 0, tty);
1193
1194 #ifdef CRYPT_SUPPORT
1195         screen->widgets.update_password_l = widget_new_button(set, 0, 0, 30,
1196                         _("Update system password"), password_click, screen);
1197 #endif
1198
1199         screen->widgets.ok_b = widget_new_button(set, 0, 0, 10, _("OK"),
1200                         ok_click, screen);
1201         screen->widgets.help_b = widget_new_button(set, 0, 0, 10, _("Help"),
1202                         help_click, screen);
1203         screen->widgets.cancel_b = widget_new_button(set, 0, 0, 10, _("Cancel"),
1204                         cancel_click, screen);
1205 }
1206
1207 static void config_screen_widget_focus(struct nc_widget *widget, void *arg)
1208 {
1209         struct config_screen *screen = arg;
1210         int w_y, w_height, w_focus, s_max, adjust;
1211
1212         w_height = widget_height(widget);
1213         w_focus = widget_focus_y(widget);
1214         w_y = widget_y(widget) + w_focus;
1215         s_max = getmaxy(screen->scr.sub_ncw) - 1;
1216
1217         if (w_y < screen->scroll_y)
1218                 screen->scroll_y = w_y;
1219
1220         else if (w_y + screen->scroll_y + 1 > s_max) {
1221                 /* Fit as much of the widget into the screen as possible */
1222                 adjust = min(s_max - 1, w_height - w_focus);
1223                 if (w_y + adjust >= screen->scroll_y + s_max)
1224                         screen->scroll_y = max(0, 1 + w_y + adjust - s_max);
1225         } else
1226                 return;
1227
1228         pad_refresh(screen);
1229 }
1230
1231 static void config_screen_draw(struct config_screen *screen,
1232                 const struct config *config,
1233                 const struct system_info *sysinfo)
1234 {
1235         bool repost = false;
1236         int height;
1237
1238         /* The size of the pad we'll need depends on the number of interfaces.
1239          *
1240          * We use N_FIELDS (which is quite conservative, as some fields share
1241          * a line) as a base, then:
1242          * - add 6 (as the network select & boot device select fields take 3
1243          *   lines each),
1244          * - add n_interfaces for every field in the network select field, and
1245          * - add (n_blockdevs + n_interfaces) for every field in the boot device
1246          *   select field
1247          */
1248         height = N_FIELDS + 6;
1249         if (sysinfo) {
1250                 height += sysinfo->n_interfaces;
1251                 height += (sysinfo->n_blockdevs + sysinfo->n_interfaces);
1252         }
1253         if (!screen->pad || getmaxy(screen->pad) < height) {
1254                 if (screen->pad)
1255                         delwin(screen->pad);
1256                 screen->pad = newpad(height, COLS + 10);
1257         }
1258
1259         if (screen->widgetset) {
1260                 widgetset_unpost(screen->widgetset);
1261                 talloc_free(screen->widgetset);
1262                 repost = true;
1263         }
1264
1265         screen->widgetset = widgetset_create(screen, screen->scr.main_ncw,
1266                         screen->pad);
1267         widgetset_set_widget_focus(screen->widgetset,
1268                         config_screen_widget_focus, screen);
1269
1270         if (!config || !sysinfo) {
1271                 config_screen_setup_empty(screen);
1272         } else {
1273                 screen->net_conf_type = find_net_conf_type(config);
1274                 config_screen_setup_widgets(screen, config, sysinfo);
1275                 config_screen_layout_widgets(screen);
1276         }
1277
1278         if (repost)
1279                 widgetset_post(screen->widgetset);
1280 }
1281
1282 void config_screen_update(struct config_screen *screen,
1283                 const struct config *config,
1284                 const struct system_info *sysinfo)
1285 {
1286         if (screen->cui->current != config_screen_scr(screen)) {
1287                 screen->need_update = true;
1288                 return;
1289         }
1290
1291         config_screen_draw(screen, config, sysinfo);
1292         pad_refresh(screen);
1293 }
1294
1295 static int config_screen_post(struct nc_scr *scr)
1296 {
1297         struct config_screen *screen = config_screen_from_scr(scr);
1298
1299         /* We may have been posted after an auth action completed */
1300         if (screen->exit) {
1301                 screen->on_exit(screen->cui);
1302                 return 0;
1303         }
1304
1305         if (screen->need_update) {
1306                 config_screen_draw(screen, screen->cui->config,
1307                                    screen->cui->sysinfo);
1308                 screen->need_update = false;
1309         } else {
1310                 widgetset_post(screen->widgetset);
1311         }
1312
1313         nc_scr_frame_draw(scr);
1314         if (screen->need_redraw) {
1315                 redrawwin(scr->main_ncw);
1316                 screen->need_redraw = false;
1317         }
1318         wrefresh(screen->scr.main_ncw);
1319         pad_refresh(screen);
1320         return 0;
1321 }
1322
1323 static int config_screen_destroy(void *arg)
1324 {
1325         struct config_screen *screen = arg;
1326         if (screen->pad)
1327                 delwin(screen->pad);
1328         return 0;
1329 }
1330
1331 struct config_screen *config_screen_init(struct cui *cui,
1332                 const struct config *config,
1333                 const struct system_info *sysinfo,
1334                 void (*on_exit)(struct cui *))
1335 {
1336         struct config_screen *screen;
1337
1338         screen = talloc_zero(cui, struct config_screen);
1339         talloc_set_destructor(screen, config_screen_destroy);
1340         nc_scr_init(&screen->scr, pb_config_screen_sig, 0,
1341                         cui, config_screen_process_key,
1342                         config_screen_post, config_screen_unpost,
1343                         config_screen_resize);
1344
1345         screen->cui = cui;
1346         screen->on_exit = on_exit;
1347         screen->need_redraw = false;
1348         screen->need_update = false;
1349         screen->label_x = 2;
1350         screen->field_x = 17;
1351
1352         screen->ipmi_override = false;
1353
1354         screen->scr.frame.ltitle = talloc_strdup(screen,
1355                         _("Petitboot System Configuration"));
1356         screen->scr.frame.rtitle = NULL;
1357         screen->scr.frame.help = talloc_strdup(screen,
1358                         _("tab=next, shift+tab=previous, x=exit, h=help"));
1359         nc_scr_frame_draw(&screen->scr);
1360
1361         scrollok(screen->scr.sub_ncw, true);
1362
1363         config_screen_draw(screen, config, sysinfo);
1364
1365         return screen;
1366 }