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        25
  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_button         *ok_b;
  98                 struct nc_widget_button         *help_b;
  99                 struct nc_widget_button         *cancel_b;
 100         } widgets;
 101 };
 102
 103 static struct config_screen *config_screen_from_scr(struct nc_scr *scr)
 104 {
 105         struct config_screen *config_screen;
 106
 107         assert(scr->sig == pb_config_screen_sig);
 108         config_screen = (struct config_screen *)
 109                 ((char *)scr - (size_t)&((struct config_screen *)0)->scr);
 110         assert(config_screen->scr.sig == pb_config_screen_sig);
 111         return config_screen;
 112 }
 113
 114 static void pad_refresh(struct config_screen *screen)
 115 {
 116         int y, x, rows, cols;
 117
 118         getmaxyx(screen->scr.sub_ncw, rows, cols);
 119         getbegyx(screen->scr.sub_ncw, y, x);
 120
 121         prefresh(screen->pad, screen->scroll_y, 0, y, x, rows, cols);
 122 }
 123
 124 static void config_screen_process_key(struct nc_scr *scr, int key)
 125 {
 126         struct config_screen *screen = config_screen_from_scr(scr);
 127         bool handled;
 128
 129         handled = widgetset_process_key(screen->widgetset, key);
 130
 131         if (!handled) {
 132                 switch (key) {
 133                 case 'x':
 134                 case 27: /* esc */
 135                         screen->exit = true;
 136                         break;
 137                 case 'h':
 138                         screen->show_help = true;
 139                         break;
 140                 }
 141         }
 142
 143         if (screen->exit) {
 144                 screen->on_exit(screen->cui);
 145
 146         } else if (screen->show_help) {
 147                 screen->show_help = false;
 148                 cui_show_help(screen->cui, _("System Configuration"),
 149                                 &config_help_text);
 150
 151         } else if (handled) {
 152                 pad_refresh(screen);
 153         }
 154 }
 155
 156 static void config_screen_resize(struct nc_scr *scr)
 157 {
 158         struct config_screen *screen = config_screen_from_scr(scr);
 159         (void)screen;
 160 }
 161
 162 static int config_screen_post(struct nc_scr *scr)
 163 {
 164         struct config_screen *screen = config_screen_from_scr(scr);
 165         widgetset_post(screen->widgetset);
 166         nc_scr_frame_draw(scr);
 167         redrawwin(scr->main_ncw);
 168         wrefresh(screen->scr.main_ncw);
 169         pad_refresh(screen);
 170         return 0;
 171 }
 172
 173 static int config_screen_unpost(struct nc_scr *scr)
 174 {
 175         struct config_screen *screen = config_screen_from_scr(scr);
 176         widgetset_unpost(screen->widgetset);
 177         return 0;
 178 }
 179
 180 struct nc_scr *config_screen_scr(struct config_screen *screen)
 181 {
 182         return &screen->scr;
 183 }
 184
 185 static int screen_process_form(struct config_screen *screen)
 186 {
 187         const struct system_info *sysinfo = screen->cui->sysinfo;
 188         enum net_conf_type net_conf_type;
 189         struct interface_config *iface;
 190         struct config *config;
 191         char *str, *end;
 192         int rc, idx;
 193
 194         config = config_copy(screen, screen->cui->config);
 195
 196         screen->autoboot_type =
 197                 widget_select_get_value(screen->widgets.autoboot_f);
 198
 199         config->autoboot_enabled = screen->autoboot_type != AUTOBOOT_DISABLED;
 200
 201         if (screen->autoboot_type == AUTOBOOT_ONE) {
 202                 char mac[20], *uuid = NULL;
 203
 204                 /* if idx is -1 here, we have an unknown UUID selected.
 205                  * Otherwise, it's a blockdev index (idx <= n_blockdevs) or an
 206                  * interface index.
 207                  */
 208                 idx = widget_select_get_value(screen->widgets.boot_device_f);
 209                 if (idx >= (int)sysinfo->n_blockdevs) {
 210                         struct interface_info *info = sysinfo->
 211                                 interfaces[idx - sysinfo->n_blockdevs];
 212                         mac_str(info->hwaddr, info->hwaddr_size,
 213                                         mac, sizeof(mac));
 214                         uuid = mac;
 215                 } else if (idx != -1) {
 216                         uuid = sysinfo->blockdevs[idx]->uuid;
 217                 }
 218
 219                 if (uuid) {
 220                         talloc_free(config->boot_device);
 221                         config->boot_device = talloc_strdup(config, uuid);
 222                 }
 223         }
 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         rc = cui_send_config(screen->cui, config);
 311         talloc_free(config);
 312
 313         if (rc)
 314                 pb_log("cui_send_config failed!\n");
 315         else
 316                 pb_debug("config sent!\n");
 317
 318         return 0;
 319 }
 320
 321 static void ok_click(void *arg)
 322 {
 323         struct config_screen *screen = arg;
 324         if (screen_process_form(screen))
 325                 /* errors are written to the status line, so we'll need
 326                  * to refresh */
 327                 wrefresh(screen->scr.main_ncw);
 328         else
 329                 screen->exit = true;
 330 }
 331
 332 static void help_click(void *arg)
 333 {
 334         struct config_screen *screen = arg;
 335         screen->show_help = true;
 336 }
 337
 338 static void cancel_click(void *arg)
 339 {
 340         struct config_screen *screen = arg;
 341         screen->exit = true;
 342 }
 343
 344 static int layout_pair(struct config_screen *screen, int y,
 345                 struct nc_widget_label *label,
 346                 struct nc_widget *field)
 347 {
 348         struct nc_widget *label_w = widget_label_base(label);
 349         widget_move(label_w, y, screen->label_x);
 350         widget_move(field, y, screen->field_x);
 351         return max(widget_height(label_w), widget_height(field));
 352 }
 353
 354 static void config_screen_layout_widgets(struct config_screen *screen)
 355 {
 356         struct nc_widget *wl, *wf, *wh;
 357         int y, x, help_x;
 358         bool show;
 359
 360         y = 1;
 361         help_x = screen->field_x + 2 +
 362                 widget_width(widget_textbox_base(screen->widgets.dns_f));
 363
 364         y += layout_pair(screen, y, screen->widgets.autoboot_l,
 365                         widget_select_base(screen->widgets.autoboot_f));
 366
 367         wf = widget_select_base(screen->widgets.boot_device_f);
 368         if (screen->autoboot_type == AUTOBOOT_ONE) {
 369                 widget_set_visible(wf, true);
 370                 widget_move(wf, y, screen->field_x + 3);
 371                 y += widget_height(wf);
 372         } else {
 373                 widget_set_visible(wf, false);
 374         }
 375
 376         y += 1;
 377
 378         wf = widget_textbox_base(screen->widgets.timeout_f);
 379         wl = widget_label_base(screen->widgets.timeout_l);
 380         wh = widget_label_base(screen->widgets.timeout_help_l);
 381         if (screen->autoboot_type != AUTOBOOT_DISABLED) {
 382                 widget_set_visible(wl, true);
 383                 widget_set_visible(wf, true);
 384                 widget_set_visible(wh, true);
 385                 widget_move(wl, y, screen->label_x);
 386                 widget_move(wf, y, screen->field_x);
 387                 widget_move(wh, y, screen->field_x + widget_width(wf) + 1);
 388                 y += 2;
 389         } else {
 390                 widget_set_visible(wl, false);
 391                 widget_set_visible(wf, false);
 392                 widget_set_visible(wh, false);
 393         }
 394
 395         y += layout_pair(screen, y, screen->widgets.network_l,
 396                         widget_select_base(screen->widgets.network_f));
 397
 398         y += 1;
 399
 400         /* conditionally show iface select */
 401         wl = widget_label_base(screen->widgets.iface_l);
 402         wf = widget_select_base(screen->widgets.iface_f);
 403
 404         show = screen->net_conf_type == NET_CONF_TYPE_DHCP_ONE ||
 405                 screen->net_conf_type == NET_CONF_TYPE_STATIC;
 406
 407         widget_set_visible(wl, show);
 408         widget_set_visible(wf, show);
 409
 410         if (show)
 411                 y += layout_pair(screen, y, screen->widgets.iface_l, wf) + 1;
 412
 413         /* conditionally show static IP params */
 414         show = screen->net_conf_type == NET_CONF_TYPE_STATIC;
 415
 416         wl = widget_label_base(screen->widgets.ip_addr_l);
 417         wf = widget_textbox_base(screen->widgets.ip_addr_f);
 418         widget_set_visible(wl, show);
 419         widget_set_visible(wf, show);
 420         x = screen->field_x + widget_width(wf) + 1;
 421
 422         if (show)
 423                 layout_pair(screen, y, screen->widgets.ip_addr_l, wf);
 424
 425         wl = widget_label_base(screen->widgets.ip_mask_l);
 426         wf = widget_textbox_base(screen->widgets.ip_mask_f);
 427         widget_set_visible(wl, show);
 428         widget_set_visible(wf, show);
 429
 430         if (show) {
 431                 widget_move(wl, y, x);
 432                 widget_move(wf, y, x + 2);
 433         }
 434
 435         /* help for IP/mask */
 436         wh = widget_label_base(screen->widgets.ip_addr_mask_help_l);
 437         widget_set_visible(wh, show);
 438         if (show) {
 439                 widget_move(wh, y, help_x);
 440                 y++;
 441         }
 442
 443         wl = widget_label_base(screen->widgets.gateway_l);
 444         wf = widget_textbox_base(screen->widgets.gateway_f);
 445         wh = widget_label_base(screen->widgets.gateway_help_l);
 446         widget_set_visible(wl, show);
 447         widget_set_visible(wf, show);
 448         widget_set_visible(wh, show);
 449
 450         if (show) {
 451                 layout_pair(screen, y, screen->widgets.gateway_l, wf);
 452                 widget_move(wh, y, help_x);
 453                 y++;
 454         }
 455
 456         wh = widget_label_base(screen->widgets.dns_help_l);
 457         layout_pair(screen, y, screen->widgets.dns_l,
 458                         widget_textbox_base(screen->widgets.dns_f));
 459         widget_move(wh, y, help_x);
 460         y++;
 461
 462         /* we show the DNS/DHCP help if we're configuring DHCP */
 463         show = screen->net_conf_type != NET_CONF_TYPE_STATIC;
 464         wl = widget_label_base(screen->widgets.dns_dhcp_help_l);
 465         widget_set_visible(wl, show);
 466         if (show) {
 467                 widget_move(wl, y, screen->field_x);
 468                 y += 1;
 469         }
 470
 471         y += 1;
 472
 473         widget_move(widget_button_base(screen->widgets.ok_b),
 474                         y, screen->field_x);
 475         widget_move(widget_button_base(screen->widgets.help_b),
 476                         y, screen->field_x + 10);
 477         widget_move(widget_button_base(screen->widgets.cancel_b),
 478                         y, screen->field_x + 20);
 479 }
 480
 481 static void config_screen_network_change(void *arg, int value)
 482 {
 483         struct config_screen *screen = arg;
 484         screen->net_conf_type = value;
 485         widgetset_unpost(screen->widgetset);
 486         config_screen_layout_widgets(screen);
 487         widgetset_post(screen->widgetset);
 488 }
 489
 490 static void config_screen_autoboot_change(void *arg, int value)
 491 {
 492         struct config_screen *screen = arg;
 493         screen->autoboot_type = value;
 494         widgetset_unpost(screen->widgetset);
 495         config_screen_layout_widgets(screen);
 496         widgetset_post(screen->widgetset);
 497 }
 498
 499 static struct interface_config *first_active_interface(
 500                 const struct config *config)
 501 {
 502         unsigned int i;
 503
 504         for (i = 0; i < config->network.n_interfaces; i++) {
 505                 if (config->network.interfaces[i]->ignore)
 506                         continue;
 507                 return config->network.interfaces[i];
 508         }
 509         return NULL;
 510 }
 511
 512 static enum net_conf_type find_net_conf_type(const struct config *config)
 513 {
 514         struct interface_config *ifcfg;
 515
 516         ifcfg = first_active_interface(config);
 517
 518         if (!ifcfg)
 519                 return NET_CONF_TYPE_DHCP_ALL;
 520
 521         else if (ifcfg->method == CONFIG_METHOD_DHCP)
 522                 return NET_CONF_TYPE_DHCP_ONE;
 523
 524         else if (ifcfg->method == CONFIG_METHOD_STATIC)
 525                 return NET_CONF_TYPE_STATIC;
 526
 527         assert(0);
 528         return NET_CONF_TYPE_DHCP_ALL;
 529 }
 530
 531 static void config_screen_setup_empty(struct config_screen *screen)
 532 {
 533         widget_new_label(screen->widgetset, 2, screen->field_x,
 534                         _("Waiting for configuration data..."));
 535         screen->widgets.cancel_b = widget_new_button(screen->widgetset,
 536                         4, screen->field_x, 6, _("Cancel"),
 537                         cancel_click, screen);
 538 }
 539
 540
 541 static void config_screen_setup_widgets(struct config_screen *screen,
 542                 const struct config *config,
 543                 const struct system_info *sysinfo)
 544 {
 545         struct nc_widgetset *set = screen->widgetset;
 546         struct interface_config *ifcfg;
 547         char *str, *ip, *mask, *gw;
 548         enum net_conf_type type;
 549         unsigned int i;
 550         bool found;
 551
 552         build_assert(sizeof(screen->widgets) / sizeof(struct widget *)
 553                         == N_FIELDS);
 554
 555         type = screen->net_conf_type;
 556         ifcfg = first_active_interface(config);
 557
 558         screen->widgets.autoboot_l = widget_new_label(set, 0, 0,
 559                                         _("Autoboot:"));
 560         screen->widgets.autoboot_f = widget_new_select(set, 0, 0, 55);
 561
 562         widget_select_on_change(screen->widgets.autoboot_f,
 563                         config_screen_autoboot_change, screen);
 564
 565         screen->widgets.boot_device_f = widget_new_select(set, 0, 0, 55);
 566
 567         widget_select_add_option(screen->widgets.autoboot_f,
 568                                         AUTOBOOT_DISABLED,
 569                                         _("Don't autoboot"),
 570                                         screen->autoboot_type ==
 571                                                 AUTOBOOT_DISABLED);
 572         widget_select_add_option(screen->widgets.autoboot_f,
 573                                         AUTOBOOT_ANY,
 574                                         _("Autoboot from any "
 575                                                 "disk/network device"),
 576                                         screen->autoboot_type ==
 577                                                 AUTOBOOT_ANY);
 578         widget_select_add_option(screen->widgets.autoboot_f,
 579                                         AUTOBOOT_ONE,
 580                                         _("Only autoboot from a specific "
 581                                                 "disk/network device"),
 582                                         screen->autoboot_type ==
 583                                                 AUTOBOOT_ONE);
 584
 585         found = false;
 586
 587         for (i = 0; i < sysinfo->n_blockdevs; i++) {
 588                 struct blockdev_info *bd = sysinfo->blockdevs[i];
 589                 bool selected;
 590                 char *label;
 591
 592                 selected = config->boot_device &&
 593                                 !strcmp(config->boot_device, bd->uuid);
 594                 if (selected)
 595                         found = true;
 596
 597                 label = talloc_asprintf(screen, _("disk: %s [uuid: %s]"),
 598                                 bd->name, bd->uuid);
 599
 600                 widget_select_add_option(screen->widgets.boot_device_f, i,
 601                                         label, selected);
 602         }
 603
 604         for (i = 0; i < sysinfo->n_interfaces; i++) {
 605                 struct interface_info *info = sysinfo->interfaces[i];
 606                 char *label, mac[20];
 607                 bool selected;
 608
 609                 mac_str(info->hwaddr, info->hwaddr_size, mac, sizeof(mac));
 610                 selected = config->boot_device &&
 611                                 !strcmp(config->boot_device, mac);
 612                 if (selected)
 613                         found = true;
 614
 615                 label = talloc_asprintf(screen, _("net:  %s [mac: %s]"),
 616                                 info->name, mac);
 617
 618                 widget_select_add_option(screen->widgets.boot_device_f,
 619                                                 i + sysinfo->n_blockdevs,
 620                                                 label, selected);
 621         }
 622
 623         if (screen->autoboot_type == AUTOBOOT_ONE && !found) {
 624                 char *label;
 625
 626                 label = talloc_asprintf(screen, _("Unknown UUID: %s"),
 627                                 config->boot_device);
 628
 629                 widget_select_add_option(screen->widgets.boot_device_f, -1,
 630                                                 label, true);
 631         }
 632
 633         str = talloc_asprintf(screen, "%d", config->autoboot_timeout_sec);
 634         screen->widgets.timeout_l = widget_new_label(set, 0, 0, _("Timeout:"));
 635         screen->widgets.timeout_f = widget_new_textbox(set, 0, 0, 5, str);
 636         screen->widgets.timeout_help_l = widget_new_label(set, 0, 0,
 637                                         _("seconds"));
 638
 639         widget_textbox_set_fixed_size(screen->widgets.timeout_f);
 640         widget_textbox_set_validator_integer(screen->widgets.timeout_f, 0, 999);
 641
 642         screen->widgets.network_l = widget_new_label(set, 0, 0, _("Network:"));
 643         screen->widgets.network_f = widget_new_select(set, 0, 0, 50);
 644
 645         widget_select_add_option(screen->widgets.network_f,
 646                                         NET_CONF_TYPE_DHCP_ALL,
 647                                         _("DHCP on all active interfaces"),
 648                                         type == NET_CONF_TYPE_DHCP_ALL);
 649         widget_select_add_option(screen->widgets.network_f,
 650                                         NET_CONF_TYPE_DHCP_ONE,
 651                                         _("DHCP on a specific interface"),
 652                                         type == NET_CONF_TYPE_DHCP_ONE);
 653         widget_select_add_option(screen->widgets.network_f,
 654                                         NET_CONF_TYPE_STATIC,
 655                                         _("Static IP configuration"),
 656                                         type == NET_CONF_TYPE_STATIC);
 657
 658         widget_select_on_change(screen->widgets.network_f,
 659                         config_screen_network_change, screen);
 660
 661         screen->widgets.iface_l = widget_new_label(set, 0, 0, _("Device:"));
 662         screen->widgets.iface_f = widget_new_select(set, 0, 0, 50);
 663
 664         for (i = 0; i < sysinfo->n_interfaces; i++) {
 665                 struct interface_info *info = sysinfo->interfaces[i];
 666                 char str[50], mac[20];
 667                 bool is_default;
 668
 669                 is_default = ifcfg && !memcmp(ifcfg->hwaddr, info->hwaddr,
 670                                         sizeof(ifcfg->hwaddr));
 671
 672                 mac_str(info->hwaddr, info->hwaddr_size, mac, sizeof(mac));
 673                 snprintf(str, sizeof(str), "%s [%s, %s]", info->name, mac,
 674                                 info->link ? _("link up") : _("link down"));
 675
 676                 widget_select_add_option(screen->widgets.iface_f,
 677                                                 i, str, is_default);
 678         }
 679
 680         gw = ip = mask = NULL;
 681         if (ifcfg && ifcfg->method == CONFIG_METHOD_STATIC) {
 682                 char *sep;
 683
 684                 str = talloc_strdup(screen, ifcfg->static_config.address);
 685                 sep = strchr(str, '/');
 686                 ip = str;
 687
 688                 if (sep) {
 689                         *sep = '\0';
 690                         mask = sep + 1;
 691                 }
 692                 gw = ifcfg->static_config.gateway;
 693         }
 694
 695         screen->widgets.ip_addr_l = widget_new_label(set, 0, 0, _("IP/mask:"));
 696         screen->widgets.ip_addr_f = widget_new_textbox(set, 0, 0, 16, ip);
 697         screen->widgets.ip_mask_l = widget_new_label(set, 0, 0, "/");
 698         screen->widgets.ip_mask_f = widget_new_textbox(set, 0, 0, 3, mask);
 699         screen->widgets.ip_addr_mask_help_l =
 700                 widget_new_label(set, 0, 0, _("(eg. 192.168.0.10 / 24)"));
 701
 702         widget_textbox_set_fixed_size(screen->widgets.ip_addr_f);
 703         widget_textbox_set_fixed_size(screen->widgets.ip_mask_f);
 704         widget_textbox_set_validator_ipv4(screen->widgets.ip_addr_f);
 705         widget_textbox_set_validator_integer(screen->widgets.ip_mask_f, 1, 31);
 706
 707         screen->widgets.gateway_l = widget_new_label(set, 0, 0, _("Gateway:"));
 708         screen->widgets.gateway_f = widget_new_textbox(set, 0, 0, 16, gw);
 709         screen->widgets.gateway_help_l =
 710                 widget_new_label(set, 0, 0, _("(eg. 192.168.0.1)"));
 711
 712         widget_textbox_set_fixed_size(screen->widgets.gateway_f);
 713         widget_textbox_set_validator_ipv4(screen->widgets.gateway_f);
 714
 715         str = talloc_strdup(screen, "");
 716         for (i = 0; i < config->network.n_dns_servers; i++) {
 717                 str = talloc_asprintf_append(str, "%s%s",
 718                                 (i == 0) ? "" : " ",
 719                                 config->network.dns_servers[i]);
 720         }
 721
 722         screen->widgets.dns_l = widget_new_label(set, 0, 0,
 723                                         _("DNS Server(s):"));
 724         screen->widgets.dns_f = widget_new_textbox(set, 0, 0, 32, str);
 725         screen->widgets.dns_help_l =
 726                 widget_new_label(set, 0, 0, _("(eg. 192.168.0.2)"));
 727
 728         widget_textbox_set_validator_ipv4_multi(screen->widgets.dns_f);
 729
 730         screen->widgets.dns_dhcp_help_l = widget_new_label(set, 0, 0,
 731                         _("(if not provided by DHCP server)"));
 732
 733         screen->widgets.ok_b = widget_new_button(set, 0, 0, 6, _("OK"),
 734                         ok_click, screen);
 735         screen->widgets.help_b = widget_new_button(set, 0, 0, 6, _("Help"),
 736                         help_click, screen);
 737         screen->widgets.cancel_b = widget_new_button(set, 0, 0, 6, _("Cancel"),
 738                         cancel_click, screen);
 739 }
 740
 741 static void config_screen_widget_focus(struct nc_widget *widget, void *arg)
 742 {
 743         struct config_screen *screen = arg;
 744         int w_y, s_max;
 745
 746         w_y = widget_y(widget) + widget_focus_y(widget);
 747         s_max = getmaxy(screen->scr.sub_ncw) - 1;
 748
 749         if (w_y < screen->scroll_y)
 750                 screen->scroll_y = w_y;
 751
 752         else if (w_y + screen->scroll_y + 1 > s_max)
 753                 screen->scroll_y = 1 + w_y - s_max;
 754
 755         else
 756                 return;
 757
 758         pad_refresh(screen);
 759 }
 760
 761 static void config_screen_draw(struct config_screen *screen,
 762                 const struct config *config,
 763                 const struct system_info *sysinfo)
 764 {
 765         bool repost = false;
 766         int height;
 767
 768         /* The size of the pad we'll need depends on the number of interfaces.
 769          *
 770          * We use N_FIELDS (which is quite conservative, as some fields share
 771          * a line) as a base, then add 3 (as the network select field is
 772          * takes 3 lines), and n_interfaces (as the network interface field
 773          * has n_interfaces lines).
 774          */
 775         height = N_FIELDS + 3;
 776         if (sysinfo)
 777                 height += sysinfo->n_interfaces;
 778         if (!screen->pad || getmaxy(screen->pad) < height) {
 779                 if (screen->pad)
 780                         delwin(screen->pad);
 781                 screen->pad = newpad(height, COLS);
 782         }
 783
 784         if (screen->widgetset) {
 785                 widgetset_unpost(screen->widgetset);
 786                 talloc_free(screen->widgetset);
 787                 repost = true;
 788         }
 789
 790         screen->widgetset = widgetset_create(screen, screen->scr.main_ncw,
 791                         screen->pad);
 792         widgetset_set_widget_focus(screen->widgetset,
 793                         config_screen_widget_focus, screen);
 794
 795         if (!config || !sysinfo) {
 796                 config_screen_setup_empty(screen);
 797         } else {
 798                 screen->net_conf_type = find_net_conf_type(config);
 799                 if (!config->autoboot_enabled)
 800                         screen->autoboot_type = AUTOBOOT_DISABLED;
 801                 else
 802                         screen->autoboot_type = config->boot_device ?
 803                                         AUTOBOOT_ONE : AUTOBOOT_ANY;
 804
 805                 config_screen_setup_widgets(screen, config, sysinfo);
 806                 config_screen_layout_widgets(screen);
 807         }
 808
 809         if (repost)
 810                 widgetset_post(screen->widgetset);
 811 }
 812
 813 void config_screen_update(struct config_screen *screen,
 814                 const struct config *config,
 815                 const struct system_info *sysinfo)
 816 {
 817         config_screen_draw(screen, config, sysinfo);
 818         pad_refresh(screen);
 819 }
 820
 821 static int config_screen_destroy(void *arg)
 822 {
 823         struct config_screen *screen = arg;
 824         if (screen->pad)
 825                 delwin(screen->pad);
 826         return 0;
 827 }
 828
 829 struct config_screen *config_screen_init(struct cui *cui,
 830                 const struct config *config,
 831                 const struct system_info *sysinfo,
 832                 void (*on_exit)(struct cui *))
 833 {
 834         struct config_screen *screen;
 835
 836         screen = talloc_zero(cui, struct config_screen);
 837         talloc_set_destructor(screen, config_screen_destroy);
 838         nc_scr_init(&screen->scr, pb_config_screen_sig, 0,
 839                         cui, config_screen_process_key,
 840                         config_screen_post, config_screen_unpost,
 841                         config_screen_resize);
 842
 843         screen->cui = cui;
 844         screen->on_exit = on_exit;
 845         screen->label_x = 2;
 846         screen->field_x = 17;
 847
 848         screen->scr.frame.ltitle = talloc_strdup(screen,
 849                         _("Petitboot System Configuration"));
 850         screen->scr.frame.rtitle = NULL;
 851         screen->scr.frame.help = talloc_strdup(screen,
 852                         _("tab=next, shift+tab=previous, x=exit, h=help"));
 853         nc_scr_frame_draw(&screen->scr);
 854
 855         scrollok(screen->scr.sub_ncw, true);
 856
 857         config_screen_draw(screen, config, sysinfo);
 858
 859         return screen;
 860 }