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 #define _GNU_SOURCE
  19
  20 #include <errno.h>
  21 #include <stdlib.h>
  22 #include <string.h>
  23
  24 #include <pb-config/pb-config.h>
  25 #include <talloc/talloc.h>
  26 #include <types/types.h>
  27 #include <log/log.h>
  28
  29 #include "config.h"
  30 #include "nc-cui.h"
  31 #include "nc-config.h"
  32 #include "nc-widgets.h"
  33
  34 #define N_FIELDS        19
  35
  36 enum net_conf_type {
  37         NET_CONF_TYPE_DHCP_ALL,
  38         NET_CONF_TYPE_DHCP_ONE,
  39         NET_CONF_TYPE_STATIC,
  40 };
  41
  42 struct config_screen {
  43         struct nc_scr           scr;
  44         struct cui              *cui;
  45         struct nc_widgetset     *widgetset;
  46         WINDOW                  *pad;
  47
  48         bool                    exit;
  49         void                    (*on_exit)(struct cui *);
  50
  51         int                     scroll_y;
  52
  53         int                     label_x;
  54         int                     field_x;
  55         int                     network_config_y;
  56
  57         enum net_conf_type      net_conf_type;
  58
  59         struct {
  60                 struct nc_widget_checkbox       *autoboot_f;
  61                 struct nc_widget_label          *autoboot_l;
  62                 struct nc_widget_textbox        *timeout_f;
  63                 struct nc_widget_label          *timeout_l;
  64
  65                 struct nc_widget_label          *network_l;
  66                 struct nc_widget_select         *network_f;
  67
  68                 struct nc_widget_label          *iface_l;
  69                 struct nc_widget_select         *iface_f;
  70                 struct nc_widget_label          *ip_addr_l;
  71                 struct nc_widget_textbox        *ip_addr_f;
  72                 struct nc_widget_label          *ip_mask_l;
  73                 struct nc_widget_textbox        *ip_mask_f;
  74                 struct nc_widget_label          *gateway_l;
  75                 struct nc_widget_textbox        *gateway_f;
  76                 struct nc_widget_label          *dns_l;
  77                 struct nc_widget_textbox        *dns_f;
  78                 struct nc_widget_label          *dns_help_l;
  79
  80                 struct nc_widget_button         *ok_b;
  81                 struct nc_widget_button         *cancel_b;
  82         } widgets;
  83 };
  84
  85 static struct config_screen *config_screen_from_scr(struct nc_scr *scr)
  86 {
  87         struct config_screen *config_screen;
  88
  89         assert(scr->sig == pb_config_screen_sig);
  90         config_screen = (struct config_screen *)
  91                 ((char *)scr - (size_t)&((struct config_screen *)0)->scr);
  92         assert(config_screen->scr.sig == pb_config_screen_sig);
  93         return config_screen;
  94 }
  95
  96 static void pad_refresh(struct config_screen *screen)
  97 {
  98         int y, x, rows, cols;
  99
 100         getmaxyx(screen->scr.sub_ncw, rows, cols);
 101         getbegyx(screen->scr.sub_ncw, y, x);
 102
 103         prefresh(screen->pad, screen->scroll_y, 0, y, x, rows, cols);
 104 }
 105
 106 static void config_screen_process_key(struct nc_scr *scr, int key)
 107 {
 108         struct config_screen *screen = config_screen_from_scr(scr);
 109         bool handled;
 110
 111         handled = widgetset_process_key(screen->widgetset, key);
 112         if (screen->exit)
 113                 screen->on_exit(screen->cui);
 114         else if (handled)
 115                 pad_refresh(screen);
 116 }
 117
 118 static void config_screen_resize(struct nc_scr *scr)
 119 {
 120         struct config_screen *screen = config_screen_from_scr(scr);
 121         (void)screen;
 122 }
 123
 124 static int config_screen_post(struct nc_scr *scr)
 125 {
 126         struct config_screen *screen = config_screen_from_scr(scr);
 127         widgetset_post(screen->widgetset);
 128         nc_scr_frame_draw(scr);
 129         pad_refresh(screen);
 130         return 0;
 131 }
 132
 133 static int config_screen_unpost(struct nc_scr *scr)
 134 {
 135         struct config_screen *screen = config_screen_from_scr(scr);
 136         widgetset_unpost(screen->widgetset);
 137         return 0;
 138 }
 139
 140 struct nc_scr *config_screen_scr(struct config_screen *screen)
 141 {
 142         return &screen->scr;
 143 }
 144
 145 static int screen_process_form(struct config_screen *screen)
 146 {
 147         const struct system_info *sysinfo = screen->cui->sysinfo;
 148         struct config *config = talloc_zero(screen, struct config);
 149         enum net_conf_type net_conf_type;
 150         struct interface_config *iface;
 151         char *str, *end;
 152         int rc;
 153
 154         config_set_defaults(config);
 155
 156         config->autoboot_enabled =
 157                 widget_checkbox_get_value(screen->widgets.autoboot_f);
 158
 159
 160         str = widget_textbox_get_value(screen->widgets.timeout_f);
 161         if (str) {
 162                 unsigned long x;
 163                 errno = 0;
 164                 x = strtoul(str, &end, 10);
 165                 if (!errno && end != str)
 166                         config->autoboot_timeout_sec = x;
 167         }
 168
 169         net_conf_type = widget_select_get_value(screen->widgets.network_f);
 170
 171         /* if we don't have any network interfaces, prevent per-interface
 172          * configuration */
 173         if (sysinfo->n_interfaces == 0)
 174                 net_conf_type = NET_CONF_TYPE_DHCP_ALL;
 175
 176         if (net_conf_type == NET_CONF_TYPE_DHCP_ALL) {
 177                 config->network.n_interfaces = 0;
 178
 179         } else {
 180                 int idx;
 181
 182                 iface = talloc_zero(config, struct interface_config);
 183                 config->network.n_interfaces = 1;
 184                 config->network.interfaces = talloc_array(config,
 185                                 struct interface_config *, 1);
 186                 config->network.interfaces[0] = iface;
 187
 188                 /* copy hwaddr (from the sysinfo interface data) to
 189                  * the configuration */
 190                 idx = widget_select_get_value(screen->widgets.iface_f);
 191                 memcpy(iface->hwaddr, sysinfo->interfaces[idx]->hwaddr,
 192                                 sizeof(iface->hwaddr));
 193         }
 194
 195         if (net_conf_type == NET_CONF_TYPE_DHCP_ONE) {
 196                 iface->method = CONFIG_METHOD_DHCP;
 197         }
 198
 199         if (net_conf_type == NET_CONF_TYPE_STATIC) {
 200                 iface->method = CONFIG_METHOD_STATIC;
 201                 iface->static_config.address = talloc_asprintf(iface, "%s/%s",
 202                                 widget_textbox_get_value(
 203                                         screen->widgets.ip_addr_f),
 204                                 widget_textbox_get_value(
 205                                         screen->widgets.ip_mask_f));
 206                 iface->static_config.gateway = talloc_strdup(iface,
 207                                 widget_textbox_get_value(
 208                                         screen->widgets.gateway_f));
 209         }
 210
 211         str = widget_textbox_get_value(screen->widgets.dns_f);
 212         if (str && strlen(str)) {
 213                 char *dns, *tmp;
 214                 int i;
 215
 216                 for (;;) {
 217                         dns = strtok_r(str, " \t", &tmp);
 218
 219                         if (!dns)
 220                                 break;
 221
 222                         i = config->network.n_dns_servers++;
 223                         config->network.dns_servers = talloc_realloc(config,
 224                                         config->network.dns_servers,
 225                                         const char *,
 226                                         config->network.n_dns_servers);
 227                         config->network.dns_servers[i] =
 228                                 talloc_strdup(config, dns);
 229
 230                         str = NULL;
 231                 }
 232         }
 233
 234         rc = cui_send_config(screen->cui, config);
 235         talloc_free(config);
 236
 237         if (rc)
 238                 pb_log("cui_send_config failed!\n");
 239         else
 240                 pb_debug("config sent!\n");
 241
 242         return 0;
 243 }
 244
 245 static void ok_click(void *arg)
 246 {
 247         struct config_screen *screen = arg;
 248         screen_process_form(screen);
 249         screen->exit = true;
 250 }
 251
 252 static void cancel_click(void *arg)
 253 {
 254         struct config_screen *screen = arg;
 255         screen->exit = true;
 256 }
 257
 258 static int layout_pair(struct config_screen *screen, int y,
 259                 struct nc_widget_label *label,
 260                 struct nc_widget *field)
 261 {
 262         struct nc_widget *label_w = widget_label_base(label);
 263         widget_move(label_w, y, screen->label_x);
 264         widget_move(field, y, screen->field_x);
 265         return max(widget_height(label_w), widget_height(field));
 266 }
 267
 268 static void config_screen_layout_widgets(struct config_screen *screen,
 269                 enum net_conf_type net_conf)
 270 {
 271         struct nc_widget *wl, *wf;
 272         bool show;
 273         int y, x;
 274
 275         y = 1;
 276
 277         y += layout_pair(screen, y, screen->widgets.autoboot_l,
 278                         widget_checkbox_base(screen->widgets.autoboot_f));
 279
 280         y += layout_pair(screen, y, screen->widgets.timeout_l,
 281                         widget_textbox_base(screen->widgets.timeout_f));
 282
 283         y += 1;
 284
 285         y += layout_pair(screen, y, screen->widgets.network_l,
 286                         widget_select_base(screen->widgets.network_f));
 287
 288         y += 1;
 289
 290         /* conditionally show iface select */
 291         wl = widget_label_base(screen->widgets.iface_l);
 292         wf = widget_select_base(screen->widgets.iface_f);
 293
 294         show = net_conf == NET_CONF_TYPE_DHCP_ONE ||
 295                 net_conf == NET_CONF_TYPE_STATIC;
 296
 297         widget_set_visible(wl, show);
 298         widget_set_visible(wf, show);
 299
 300         if (show)
 301                 y += layout_pair(screen, y, screen->widgets.iface_l, wf) + 1;
 302
 303         /* conditionally show static IP params */
 304         show = net_conf == NET_CONF_TYPE_STATIC;
 305
 306         wl = widget_label_base(screen->widgets.ip_addr_l);
 307         wf = widget_textbox_base(screen->widgets.ip_addr_f);
 308         widget_set_visible(wl, show);
 309         widget_set_visible(wf, show);
 310         x = screen->field_x + widget_width(wf) + 1;
 311
 312         if (show)
 313                 layout_pair(screen, y, screen->widgets.ip_addr_l, wf);
 314
 315         wl = widget_label_base(screen->widgets.ip_mask_l);
 316         wf = widget_textbox_base(screen->widgets.ip_mask_f);
 317         widget_set_visible(wl, show);
 318         widget_set_visible(wf, show);
 319
 320         if (show) {
 321                 widget_move(wl, y, x);
 322                 widget_move(wf, y, x + 2);
 323                 y += 1;
 324         }
 325
 326         wl = widget_label_base(screen->widgets.gateway_l);
 327         wf = widget_textbox_base(screen->widgets.gateway_f);
 328         widget_set_visible(wl, show);
 329         widget_set_visible(wf, show);
 330
 331         if (show)
 332                 y += layout_pair(screen, y, screen->widgets.gateway_l, wf) + 1;
 333
 334         y += layout_pair(screen, y, screen->widgets.dns_l,
 335                         widget_textbox_base(screen->widgets.dns_f));
 336
 337         /* we show the DNS/DHCP help if we're configuring DHCP */
 338         show = net_conf != NET_CONF_TYPE_STATIC;
 339         wl = widget_label_base(screen->widgets.dns_help_l);
 340         widget_set_visible(wl, show);
 341         if (show) {
 342                 widget_move(wl, y, screen->field_x);
 343                 y += 1;
 344         }
 345
 346         y += 1;
 347
 348         widget_move(widget_button_base(screen->widgets.ok_b),
 349                         y, screen->field_x);
 350         widget_move(widget_button_base(screen->widgets.cancel_b),
 351                         y, screen->field_x + 10);
 352 }
 353
 354 static void config_screen_network_change(void *arg, int value)
 355 {
 356         struct config_screen *screen = arg;
 357         screen->net_conf_type = value;
 358         widgetset_unpost(screen->widgetset);
 359         config_screen_layout_widgets(screen, value);
 360         widgetset_post(screen->widgetset);
 361 }
 362
 363 static struct interface_config *first_active_interface(
 364                 const struct config *config)
 365 {
 366         unsigned int i;
 367
 368         for (i = 0; i < config->network.n_interfaces; i++) {
 369                 if (config->network.interfaces[i]->ignore)
 370                         continue;
 371                 return config->network.interfaces[i];
 372         }
 373         return NULL;
 374 }
 375
 376 static enum net_conf_type find_net_conf_type(const struct config *config)
 377 {
 378         struct interface_config *ifcfg;
 379
 380         ifcfg = first_active_interface(config);
 381
 382         if (!ifcfg)
 383                 return NET_CONF_TYPE_DHCP_ALL;
 384
 385         else if (ifcfg->method == CONFIG_METHOD_DHCP)
 386                 return NET_CONF_TYPE_DHCP_ONE;
 387
 388         else if (ifcfg->method == CONFIG_METHOD_STATIC)
 389                 return NET_CONF_TYPE_STATIC;
 390
 391         assert(0);
 392         return NET_CONF_TYPE_DHCP_ALL;
 393 }
 394
 395 static void config_screen_setup_empty(struct config_screen *screen)
 396 {
 397         widget_new_label(screen->widgetset, 2, screen->field_x,
 398                         "Waiting for configuration data...");
 399         screen->widgets.cancel_b = widget_new_button(screen->widgetset,
 400                         4, screen->field_x, 6, "Cancel", cancel_click, screen);
 401 }
 402
 403
 404 static void config_screen_setup_widgets(struct config_screen *screen,
 405                 const struct config *config,
 406                 const struct system_info *sysinfo)
 407 {
 408         struct nc_widgetset *set = screen->widgetset;
 409         struct interface_config *ifcfg;
 410         char *str, *ip, *mask, *gw;
 411         enum net_conf_type type;
 412         unsigned int i;
 413
 414         build_assert(sizeof(screen->widgets) / sizeof(struct widget *)
 415                         == N_FIELDS);
 416
 417         type = screen->net_conf_type;
 418         ifcfg = first_active_interface(config);
 419
 420         screen->widgets.autoboot_l = widget_new_label(set, 0, 0, "Autoboot:");
 421         screen->widgets.autoboot_f = widget_new_checkbox(set, 0, 0,
 422                                         config->autoboot_enabled);
 423
 424         str = talloc_asprintf(screen, "%d", config->autoboot_timeout_sec);
 425         screen->widgets.timeout_l = widget_new_label(set, 0, 0, "Timeout:");
 426         screen->widgets.timeout_f = widget_new_textbox(set, 0, 0, 5, str);
 427
 428         screen->widgets.network_l = widget_new_label(set, 0, 0, "Network");
 429         screen->widgets.network_f = widget_new_select(set, 0, 0, 50);
 430
 431         widget_select_add_option(screen->widgets.network_f,
 432                                         NET_CONF_TYPE_DHCP_ALL,
 433                                         "DHCP on all active interfaces",
 434                                         type == NET_CONF_TYPE_DHCP_ALL);
 435         widget_select_add_option(screen->widgets.network_f,
 436                                         NET_CONF_TYPE_DHCP_ONE,
 437                                         "DHCP on a specific interface",
 438                                         type == NET_CONF_TYPE_DHCP_ONE);
 439         widget_select_add_option(screen->widgets.network_f,
 440                                         NET_CONF_TYPE_STATIC,
 441                                         "Static IP configuration",
 442                                         type == NET_CONF_TYPE_STATIC);
 443
 444         widget_select_on_change(screen->widgets.network_f,
 445                         config_screen_network_change, screen);
 446
 447         screen->widgets.iface_l = widget_new_label(set, 0, 0, "Device:");
 448         screen->widgets.iface_f = widget_new_select(set, 0, 0, 20);
 449
 450         for (i = 0; i < sysinfo->n_interfaces; i++) {
 451                 struct interface_info *info = sysinfo->interfaces[i];
 452                 bool is_default;
 453
 454                 is_default = ifcfg && !memcmp(ifcfg->hwaddr, info->hwaddr,
 455                                         sizeof(ifcfg->hwaddr));
 456
 457                 widget_select_add_option(screen->widgets.iface_f,
 458                                                 i, info->name, is_default);
 459         }
 460
 461         gw = ip = mask = NULL;
 462         if (ifcfg && ifcfg->method == CONFIG_METHOD_STATIC) {
 463                 char *sep;
 464
 465                 str = talloc_strdup(screen, ifcfg->static_config.address);
 466                 sep = strchr(str, '/');
 467                 ip = str;
 468
 469                 if (sep) {
 470                         *sep = '\0';
 471                         mask = sep + 1;
 472                 }
 473                 gw = ifcfg->static_config.gateway;
 474         }
 475
 476         screen->widgets.ip_addr_l = widget_new_label(set, 0, 0, "IP/mask:");
 477         screen->widgets.ip_addr_f = widget_new_textbox(set, 0, 0, 16, ip);
 478         screen->widgets.ip_mask_l = widget_new_label(set, 0, 0, "/");
 479         screen->widgets.ip_mask_f = widget_new_textbox(set, 0, 0, 3, mask);
 480
 481         screen->widgets.gateway_l = widget_new_label(set, 0, 0, "Gateway:");
 482         screen->widgets.gateway_f = widget_new_textbox(set, 0, 0, 16, gw);
 483
 484         str = talloc_strdup(screen, "");
 485         for (i = 0; i < config->network.n_dns_servers; i++) {
 486                 str = talloc_asprintf_append(str, "%s%s",
 487                                 (i == 0) ? "" : " ",
 488                                 config->network.dns_servers[i]);
 489         }
 490
 491         screen->widgets.dns_l = widget_new_label(set, 0, 0, "DNS Server(s):");
 492         screen->widgets.dns_f = widget_new_textbox(set, 0, 0, 32, str);
 493
 494         screen->widgets.dns_help_l = widget_new_label(set, 0, 0,
 495                         "(if not provided by DHCP server)");
 496
 497         screen->widgets.ok_b = widget_new_button(set, 0, 0, 6, "OK",
 498                         ok_click, screen);
 499         screen->widgets.cancel_b = widget_new_button(set, 0, 0, 6, "Cancel",
 500                         cancel_click, screen);
 501 }
 502
 503 static void config_screen_widget_focus(struct nc_widget *widget, void *arg)
 504 {
 505         struct config_screen *screen = arg;
 506         int w_y, w_height, s_max;
 507
 508         w_y = widget_y(widget);
 509         w_height = widget_height(widget);
 510         s_max = getmaxy(screen->scr.sub_ncw);
 511
 512         if (w_y < screen->scroll_y)
 513                 screen->scroll_y = w_y;
 514
 515         else if (w_y + w_height + screen->scroll_y > s_max - 1)
 516                 screen->scroll_y = 1 + w_y + w_height - s_max;
 517
 518         else
 519                 return;
 520
 521         pad_refresh(screen);
 522 }
 523
 524
 525 void config_screen_update(struct config_screen *screen,
 526                 const struct config *config,
 527                 const struct system_info *sysinfo)
 528 {
 529         bool repost = false;
 530         int height;
 531
 532         /* The size of the pad we'll need depends on the number of interfaces.
 533          *
 534          * We use N_FIELDS (which is quite conservative, as some fields share
 535          * a line) as a base, then add 3 (as the network select field is
 536          * takes 3 lines), and n_interfaces (as the network interface field
 537          * has n_interfaces lines).
 538          */
 539         height = N_FIELDS + 3;
 540         if (sysinfo)
 541                 height += sysinfo->n_interfaces;
 542         if (!screen->pad || getmaxx(screen->pad) < height) {
 543                 if (screen->pad)
 544                         delwin(screen->pad);
 545                 screen->pad = newpad(height, COLS);
 546         }
 547
 548         if (screen->widgetset) {
 549                 widgetset_unpost(screen->widgetset);
 550                 talloc_free(screen->widgetset);
 551                 repost = true;
 552         }
 553
 554         screen->widgetset = widgetset_create(screen, screen->scr.main_ncw,
 555                         screen->pad);
 556         widgetset_set_widget_focus(screen->widgetset,
 557                         config_screen_widget_focus, screen);
 558
 559         if (!config || !sysinfo) {
 560                 config_screen_setup_empty(screen);
 561         } else {
 562                 screen->net_conf_type = find_net_conf_type(config);
 563
 564                 config_screen_setup_widgets(screen, config, sysinfo);
 565                 config_screen_layout_widgets(screen, screen->net_conf_type);
 566         }
 567
 568         if (repost)
 569                 widgetset_post(screen->widgetset);
 570
 571         pad_refresh(screen);
 572 }
 573
 574 static int config_screen_destroy(void *arg)
 575 {
 576         struct config_screen *screen = arg;
 577         if (screen->pad)
 578                 delwin(screen->pad);
 579         return 0;
 580 }
 581
 582 struct config_screen *config_screen_init(struct cui *cui,
 583                 const struct config *config,
 584                 const struct system_info *sysinfo,
 585                 void (*on_exit)(struct cui *))
 586 {
 587         struct config_screen *screen;
 588
 589         screen = talloc_zero(cui, struct config_screen);
 590         talloc_set_destructor(screen, config_screen_destroy);
 591         nc_scr_init(&screen->scr, pb_config_screen_sig, 0,
 592                         cui, config_screen_process_key,
 593                         config_screen_post, config_screen_unpost,
 594                         config_screen_resize);
 595
 596         screen->cui = cui;
 597         screen->on_exit = on_exit;
 598         screen->label_x = 2;
 599         screen->field_x = 17;
 600
 601         screen->scr.frame.ltitle = talloc_strdup(screen,
 602                         "Petitboot System Configuration");
 603         screen->scr.frame.rtitle = NULL;
 604         screen->scr.frame.help = talloc_strdup(screen,
 605                         "tab=next, shift+tab=previous");
 606         nc_scr_frame_draw(&screen->scr);
 607
 608         scrollok(screen->scr.sub_ncw, true);
 609
 610         config_screen_update(screen, config, sysinfo);
 611
 612         wrefresh(screen->scr.main_ncw);
 613
 614         return screen;
 615 }