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        23
  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                 struct nc_widget_label          *timeout_help_l;
  65
  66                 struct nc_widget_label          *network_l;
  67                 struct nc_widget_select         *network_f;
  68
  69                 struct nc_widget_label          *iface_l;
  70                 struct nc_widget_select         *iface_f;
  71                 struct nc_widget_label          *ip_addr_l;
  72                 struct nc_widget_textbox        *ip_addr_f;
  73                 struct nc_widget_label          *ip_mask_l;
  74                 struct nc_widget_textbox        *ip_mask_f;
  75                 struct nc_widget_label          *ip_addr_mask_help_l;
  76                 struct nc_widget_label          *gateway_l;
  77                 struct nc_widget_textbox        *gateway_f;
  78                 struct nc_widget_label          *gateway_help_l;
  79                 struct nc_widget_label          *dns_l;
  80                 struct nc_widget_textbox        *dns_f;
  81                 struct nc_widget_label          *dns_dhcp_help_l;
  82                 struct nc_widget_label          *dns_help_l;
  83
  84                 struct nc_widget_button         *ok_b;
  85                 struct nc_widget_button         *cancel_b;
  86         } widgets;
  87 };
  88
  89 static struct config_screen *config_screen_from_scr(struct nc_scr *scr)
  90 {
  91         struct config_screen *config_screen;
  92
  93         assert(scr->sig == pb_config_screen_sig);
  94         config_screen = (struct config_screen *)
  95                 ((char *)scr - (size_t)&((struct config_screen *)0)->scr);
  96         assert(config_screen->scr.sig == pb_config_screen_sig);
  97         return config_screen;
  98 }
  99
 100 static void pad_refresh(struct config_screen *screen)
 101 {
 102         int y, x, rows, cols;
 103
 104         getmaxyx(screen->scr.sub_ncw, rows, cols);
 105         getbegyx(screen->scr.sub_ncw, y, x);
 106
 107         prefresh(screen->pad, screen->scroll_y, 0, y, x, rows, cols);
 108 }
 109
 110 static void config_screen_process_key(struct nc_scr *scr, int key)
 111 {
 112         struct config_screen *screen = config_screen_from_scr(scr);
 113         bool handled;
 114
 115         handled = widgetset_process_key(screen->widgetset, key);
 116         if (screen->exit)
 117                 screen->on_exit(screen->cui);
 118         else if (handled)
 119                 pad_refresh(screen);
 120 }
 121
 122 static void config_screen_resize(struct nc_scr *scr)
 123 {
 124         struct config_screen *screen = config_screen_from_scr(scr);
 125         (void)screen;
 126 }
 127
 128 static int config_screen_post(struct nc_scr *scr)
 129 {
 130         struct config_screen *screen = config_screen_from_scr(scr);
 131         widgetset_post(screen->widgetset);
 132         nc_scr_frame_draw(scr);
 133         pad_refresh(screen);
 134         return 0;
 135 }
 136
 137 static int config_screen_unpost(struct nc_scr *scr)
 138 {
 139         struct config_screen *screen = config_screen_from_scr(scr);
 140         widgetset_unpost(screen->widgetset);
 141         return 0;
 142 }
 143
 144 struct nc_scr *config_screen_scr(struct config_screen *screen)
 145 {
 146         return &screen->scr;
 147 }
 148
 149 static int screen_process_form(struct config_screen *screen)
 150 {
 151         const struct system_info *sysinfo = screen->cui->sysinfo;
 152         struct config *config = talloc_zero(screen, struct config);
 153         enum net_conf_type net_conf_type;
 154         struct interface_config *iface;
 155         char *str, *end;
 156         int rc;
 157
 158         config_set_defaults(config);
 159
 160         config->autoboot_enabled =
 161                 widget_checkbox_get_value(screen->widgets.autoboot_f);
 162
 163
 164         str = widget_textbox_get_value(screen->widgets.timeout_f);
 165         if (str) {
 166                 unsigned long x;
 167                 errno = 0;
 168                 x = strtoul(str, &end, 10);
 169                 if (!errno && end != str)
 170                         config->autoboot_timeout_sec = x;
 171         }
 172
 173         net_conf_type = widget_select_get_value(screen->widgets.network_f);
 174
 175         /* if we don't have any network interfaces, prevent per-interface
 176          * configuration */
 177         if (sysinfo->n_interfaces == 0)
 178                 net_conf_type = NET_CONF_TYPE_DHCP_ALL;
 179
 180         if (net_conf_type == NET_CONF_TYPE_DHCP_ALL) {
 181                 config->network.n_interfaces = 0;
 182
 183         } else {
 184                 int idx;
 185
 186                 iface = talloc_zero(config, struct interface_config);
 187                 config->network.n_interfaces = 1;
 188                 config->network.interfaces = talloc_array(config,
 189                                 struct interface_config *, 1);
 190                 config->network.interfaces[0] = iface;
 191
 192                 /* copy hwaddr (from the sysinfo interface data) to
 193                  * the configuration */
 194                 idx = widget_select_get_value(screen->widgets.iface_f);
 195                 memcpy(iface->hwaddr, sysinfo->interfaces[idx]->hwaddr,
 196                                 sizeof(iface->hwaddr));
 197         }
 198
 199         if (net_conf_type == NET_CONF_TYPE_DHCP_ONE) {
 200                 iface->method = CONFIG_METHOD_DHCP;
 201         }
 202
 203         if (net_conf_type == NET_CONF_TYPE_STATIC) {
 204                 iface->method = CONFIG_METHOD_STATIC;
 205                 iface->static_config.address = talloc_asprintf(iface, "%s/%s",
 206                                 widget_textbox_get_value(
 207                                         screen->widgets.ip_addr_f),
 208                                 widget_textbox_get_value(
 209                                         screen->widgets.ip_mask_f));
 210                 iface->static_config.gateway = talloc_strdup(iface,
 211                                 widget_textbox_get_value(
 212                                         screen->widgets.gateway_f));
 213         }
 214
 215         str = widget_textbox_get_value(screen->widgets.dns_f);
 216         if (str && strlen(str)) {
 217                 char *dns, *tmp;
 218                 int i;
 219
 220                 for (;;) {
 221                         dns = strtok_r(str, " \t", &tmp);
 222
 223                         if (!dns)
 224                                 break;
 225
 226                         i = config->network.n_dns_servers++;
 227                         config->network.dns_servers = talloc_realloc(config,
 228                                         config->network.dns_servers,
 229                                         const char *,
 230                                         config->network.n_dns_servers);
 231                         config->network.dns_servers[i] =
 232                                 talloc_strdup(config, dns);
 233
 234                         str = NULL;
 235                 }
 236         }
 237
 238         rc = cui_send_config(screen->cui, config);
 239         talloc_free(config);
 240
 241         if (rc)
 242                 pb_log("cui_send_config failed!\n");
 243         else
 244                 pb_debug("config sent!\n");
 245
 246         return 0;
 247 }
 248
 249 static void ok_click(void *arg)
 250 {
 251         struct config_screen *screen = arg;
 252         screen_process_form(screen);
 253         screen->exit = true;
 254 }
 255
 256 static void cancel_click(void *arg)
 257 {
 258         struct config_screen *screen = arg;
 259         screen->exit = true;
 260 }
 261
 262 static int layout_pair(struct config_screen *screen, int y,
 263                 struct nc_widget_label *label,
 264                 struct nc_widget *field)
 265 {
 266         struct nc_widget *label_w = widget_label_base(label);
 267         widget_move(label_w, y, screen->label_x);
 268         widget_move(field, y, screen->field_x);
 269         return max(widget_height(label_w), widget_height(field));
 270 }
 271
 272 static void config_screen_layout_widgets(struct config_screen *screen,
 273                 enum net_conf_type net_conf)
 274 {
 275         struct nc_widget *wl, *wf, *wh;
 276         int y, x, help_x;
 277         bool show;
 278
 279         y = 1;
 280         help_x = screen->field_x + 2 +
 281                 widget_width(widget_textbox_base(screen->widgets.dns_f));
 282
 283         y += layout_pair(screen, y, screen->widgets.autoboot_l,
 284                         widget_checkbox_base(screen->widgets.autoboot_f));
 285
 286         wf = widget_textbox_base(screen->widgets.timeout_f);
 287         widget_move(widget_label_base(screen->widgets.timeout_l),
 288                         y, screen->label_x);
 289         widget_move(wf, y, screen->field_x);
 290         widget_move(widget_label_base(screen->widgets.timeout_help_l),
 291                         y, screen->field_x + widget_width(wf) + 1);
 292
 293         y += 2;
 294
 295         y += layout_pair(screen, y, screen->widgets.network_l,
 296                         widget_select_base(screen->widgets.network_f));
 297
 298         y += 1;
 299
 300         /* conditionally show iface select */
 301         wl = widget_label_base(screen->widgets.iface_l);
 302         wf = widget_select_base(screen->widgets.iface_f);
 303
 304         show = net_conf == NET_CONF_TYPE_DHCP_ONE ||
 305                 net_conf == NET_CONF_TYPE_STATIC;
 306
 307         widget_set_visible(wl, show);
 308         widget_set_visible(wf, show);
 309
 310         if (show)
 311                 y += layout_pair(screen, y, screen->widgets.iface_l, wf) + 1;
 312
 313         /* conditionally show static IP params */
 314         show = net_conf == NET_CONF_TYPE_STATIC;
 315
 316         wl = widget_label_base(screen->widgets.ip_addr_l);
 317         wf = widget_textbox_base(screen->widgets.ip_addr_f);
 318         widget_set_visible(wl, show);
 319         widget_set_visible(wf, show);
 320         x = screen->field_x + widget_width(wf) + 1;
 321
 322         if (show)
 323                 layout_pair(screen, y, screen->widgets.ip_addr_l, wf);
 324
 325         wl = widget_label_base(screen->widgets.ip_mask_l);
 326         wf = widget_textbox_base(screen->widgets.ip_mask_f);
 327         widget_set_visible(wl, show);
 328         widget_set_visible(wf, show);
 329
 330         if (show) {
 331                 widget_move(wl, y, x);
 332                 widget_move(wf, y, x + 2);
 333         }
 334
 335         /* help for IP/mask */
 336         wh = widget_label_base(screen->widgets.ip_addr_mask_help_l);
 337         widget_set_visible(wh, show);
 338         if (show) {
 339                 widget_move(wh, y, help_x);
 340                 y++;
 341         }
 342
 343         wl = widget_label_base(screen->widgets.gateway_l);
 344         wf = widget_textbox_base(screen->widgets.gateway_f);
 345         wh = widget_label_base(screen->widgets.gateway_help_l);
 346         widget_set_visible(wl, show);
 347         widget_set_visible(wf, show);
 348         widget_set_visible(wh, show);
 349
 350         if (show) {
 351                 layout_pair(screen, y, screen->widgets.gateway_l, wf);
 352                 widget_move(wh, y, help_x);
 353                 y++;
 354         }
 355
 356         wh = widget_label_base(screen->widgets.dns_help_l);
 357         layout_pair(screen, y, screen->widgets.dns_l,
 358                         widget_textbox_base(screen->widgets.dns_f));
 359         widget_move(wh, y, help_x);
 360         y++;
 361
 362         /* we show the DNS/DHCP help if we're configuring DHCP */
 363         show = net_conf != NET_CONF_TYPE_STATIC;
 364         wl = widget_label_base(screen->widgets.dns_dhcp_help_l);
 365         widget_set_visible(wl, show);
 366         if (show) {
 367                 widget_move(wl, y, screen->field_x);
 368                 y += 1;
 369         }
 370
 371         y += 1;
 372
 373         widget_move(widget_button_base(screen->widgets.ok_b),
 374                         y, screen->field_x);
 375         widget_move(widget_button_base(screen->widgets.cancel_b),
 376                         y, screen->field_x + 10);
 377 }
 378
 379 static void config_screen_network_change(void *arg, int value)
 380 {
 381         struct config_screen *screen = arg;
 382         screen->net_conf_type = value;
 383         widgetset_unpost(screen->widgetset);
 384         config_screen_layout_widgets(screen, value);
 385         widgetset_post(screen->widgetset);
 386 }
 387
 388 static struct interface_config *first_active_interface(
 389                 const struct config *config)
 390 {
 391         unsigned int i;
 392
 393         for (i = 0; i < config->network.n_interfaces; i++) {
 394                 if (config->network.interfaces[i]->ignore)
 395                         continue;
 396                 return config->network.interfaces[i];
 397         }
 398         return NULL;
 399 }
 400
 401 static enum net_conf_type find_net_conf_type(const struct config *config)
 402 {
 403         struct interface_config *ifcfg;
 404
 405         ifcfg = first_active_interface(config);
 406
 407         if (!ifcfg)
 408                 return NET_CONF_TYPE_DHCP_ALL;
 409
 410         else if (ifcfg->method == CONFIG_METHOD_DHCP)
 411                 return NET_CONF_TYPE_DHCP_ONE;
 412
 413         else if (ifcfg->method == CONFIG_METHOD_STATIC)
 414                 return NET_CONF_TYPE_STATIC;
 415
 416         assert(0);
 417         return NET_CONF_TYPE_DHCP_ALL;
 418 }
 419
 420 static void config_screen_setup_empty(struct config_screen *screen)
 421 {
 422         widget_new_label(screen->widgetset, 2, screen->field_x,
 423                         "Waiting for configuration data...");
 424         screen->widgets.cancel_b = widget_new_button(screen->widgetset,
 425                         4, screen->field_x, 6, "Cancel", cancel_click, screen);
 426 }
 427
 428
 429 static void config_screen_setup_widgets(struct config_screen *screen,
 430                 const struct config *config,
 431                 const struct system_info *sysinfo)
 432 {
 433         struct nc_widgetset *set = screen->widgetset;
 434         struct interface_config *ifcfg;
 435         char *str, *ip, *mask, *gw;
 436         enum net_conf_type type;
 437         unsigned int i;
 438
 439         build_assert(sizeof(screen->widgets) / sizeof(struct widget *)
 440                         == N_FIELDS);
 441
 442         type = screen->net_conf_type;
 443         ifcfg = first_active_interface(config);
 444
 445         screen->widgets.autoboot_l = widget_new_label(set, 0, 0, "Autoboot:");
 446         screen->widgets.autoboot_f = widget_new_checkbox(set, 0, 0,
 447                                         config->autoboot_enabled);
 448
 449         str = talloc_asprintf(screen, "%d", config->autoboot_timeout_sec);
 450         screen->widgets.timeout_l = widget_new_label(set, 0, 0, "Timeout:");
 451         screen->widgets.timeout_f = widget_new_textbox(set, 0, 0, 5, str);
 452         screen->widgets.timeout_help_l = widget_new_label(set, 0, 0, "seconds");
 453
 454         screen->widgets.network_l = widget_new_label(set, 0, 0, "Network");
 455         screen->widgets.network_f = widget_new_select(set, 0, 0, 50);
 456
 457         widget_select_add_option(screen->widgets.network_f,
 458                                         NET_CONF_TYPE_DHCP_ALL,
 459                                         "DHCP on all active interfaces",
 460                                         type == NET_CONF_TYPE_DHCP_ALL);
 461         widget_select_add_option(screen->widgets.network_f,
 462                                         NET_CONF_TYPE_DHCP_ONE,
 463                                         "DHCP on a specific interface",
 464                                         type == NET_CONF_TYPE_DHCP_ONE);
 465         widget_select_add_option(screen->widgets.network_f,
 466                                         NET_CONF_TYPE_STATIC,
 467                                         "Static IP configuration",
 468                                         type == NET_CONF_TYPE_STATIC);
 469
 470         widget_select_on_change(screen->widgets.network_f,
 471                         config_screen_network_change, screen);
 472
 473         screen->widgets.iface_l = widget_new_label(set, 0, 0, "Device:");
 474         screen->widgets.iface_f = widget_new_select(set, 0, 0, 20);
 475
 476         for (i = 0; i < sysinfo->n_interfaces; i++) {
 477                 struct interface_info *info = sysinfo->interfaces[i];
 478                 bool is_default;
 479
 480                 is_default = ifcfg && !memcmp(ifcfg->hwaddr, info->hwaddr,
 481                                         sizeof(ifcfg->hwaddr));
 482
 483                 widget_select_add_option(screen->widgets.iface_f,
 484                                                 i, info->name, is_default);
 485         }
 486
 487         gw = ip = mask = NULL;
 488         if (ifcfg && ifcfg->method == CONFIG_METHOD_STATIC) {
 489                 char *sep;
 490
 491                 str = talloc_strdup(screen, ifcfg->static_config.address);
 492                 sep = strchr(str, '/');
 493                 ip = str;
 494
 495                 if (sep) {
 496                         *sep = '\0';
 497                         mask = sep + 1;
 498                 }
 499                 gw = ifcfg->static_config.gateway;
 500         }
 501
 502         screen->widgets.ip_addr_l = widget_new_label(set, 0, 0, "IP/mask:");
 503         screen->widgets.ip_addr_f = widget_new_textbox(set, 0, 0, 16, ip);
 504         screen->widgets.ip_mask_l = widget_new_label(set, 0, 0, "/");
 505         screen->widgets.ip_mask_f = widget_new_textbox(set, 0, 0, 3, mask);
 506         screen->widgets.ip_addr_mask_help_l =
 507                 widget_new_label(set, 0, 0, "(eg. 192.168.0.10 / 24)");
 508
 509         screen->widgets.gateway_l = widget_new_label(set, 0, 0, "Gateway:");
 510         screen->widgets.gateway_f = widget_new_textbox(set, 0, 0, 16, gw);
 511         screen->widgets.gateway_help_l =
 512                 widget_new_label(set, 0, 0, "(eg. 192.168.0.1)");
 513
 514         str = talloc_strdup(screen, "");
 515         for (i = 0; i < config->network.n_dns_servers; i++) {
 516                 str = talloc_asprintf_append(str, "%s%s",
 517                                 (i == 0) ? "" : " ",
 518                                 config->network.dns_servers[i]);
 519         }
 520
 521         screen->widgets.dns_l = widget_new_label(set, 0, 0, "DNS Server(s):");
 522         screen->widgets.dns_f = widget_new_textbox(set, 0, 0, 32, str);
 523         screen->widgets.dns_help_l =
 524                 widget_new_label(set, 0, 0, "(eg. 192.168.0.2)");
 525
 526         screen->widgets.dns_dhcp_help_l = widget_new_label(set, 0, 0,
 527                         "(if not provided by DHCP server)");
 528
 529         screen->widgets.ok_b = widget_new_button(set, 0, 0, 6, "OK",
 530                         ok_click, screen);
 531         screen->widgets.cancel_b = widget_new_button(set, 0, 0, 6, "Cancel",
 532                         cancel_click, screen);
 533 }
 534
 535 static void config_screen_widget_focus(struct nc_widget *widget, void *arg)
 536 {
 537         struct config_screen *screen = arg;
 538         int w_y, w_height, s_max;
 539
 540         w_y = widget_y(widget);
 541         w_height = widget_height(widget);
 542         s_max = getmaxy(screen->scr.sub_ncw);
 543
 544         if (w_y < screen->scroll_y)
 545                 screen->scroll_y = w_y;
 546
 547         else if (w_y + w_height + screen->scroll_y > s_max - 1)
 548                 screen->scroll_y = 1 + w_y + w_height - s_max;
 549
 550         else
 551                 return;
 552
 553         pad_refresh(screen);
 554 }
 555
 556
 557 void config_screen_update(struct config_screen *screen,
 558                 const struct config *config,
 559                 const struct system_info *sysinfo)
 560 {
 561         bool repost = false;
 562         int height;
 563
 564         /* The size of the pad we'll need depends on the number of interfaces.
 565          *
 566          * We use N_FIELDS (which is quite conservative, as some fields share
 567          * a line) as a base, then add 3 (as the network select field is
 568          * takes 3 lines), and n_interfaces (as the network interface field
 569          * has n_interfaces lines).
 570          */
 571         height = N_FIELDS + 3;
 572         if (sysinfo)
 573                 height += sysinfo->n_interfaces;
 574         if (!screen->pad || getmaxy(screen->pad) < height) {
 575                 if (screen->pad)
 576                         delwin(screen->pad);
 577                 screen->pad = newpad(height, COLS);
 578         }
 579
 580         if (screen->widgetset) {
 581                 widgetset_unpost(screen->widgetset);
 582                 talloc_free(screen->widgetset);
 583                 repost = true;
 584         }
 585
 586         screen->widgetset = widgetset_create(screen, screen->scr.main_ncw,
 587                         screen->pad);
 588         widgetset_set_widget_focus(screen->widgetset,
 589                         config_screen_widget_focus, screen);
 590
 591         if (!config || !sysinfo) {
 592                 config_screen_setup_empty(screen);
 593         } else {
 594                 screen->net_conf_type = find_net_conf_type(config);
 595
 596                 config_screen_setup_widgets(screen, config, sysinfo);
 597                 config_screen_layout_widgets(screen, screen->net_conf_type);
 598         }
 599
 600         if (repost)
 601                 widgetset_post(screen->widgetset);
 602
 603         pad_refresh(screen);
 604 }
 605
 606 static int config_screen_destroy(void *arg)
 607 {
 608         struct config_screen *screen = arg;
 609         if (screen->pad)
 610                 delwin(screen->pad);
 611         return 0;
 612 }
 613
 614 struct config_screen *config_screen_init(struct cui *cui,
 615                 const struct config *config,
 616                 const struct system_info *sysinfo,
 617                 void (*on_exit)(struct cui *))
 618 {
 619         struct config_screen *screen;
 620
 621         screen = talloc_zero(cui, struct config_screen);
 622         talloc_set_destructor(screen, config_screen_destroy);
 623         nc_scr_init(&screen->scr, pb_config_screen_sig, 0,
 624                         cui, config_screen_process_key,
 625                         config_screen_post, config_screen_unpost,
 626                         config_screen_resize);
 627
 628         screen->cui = cui;
 629         screen->on_exit = on_exit;
 630         screen->label_x = 2;
 631         screen->field_x = 17;
 632
 633         screen->scr.frame.ltitle = talloc_strdup(screen,
 634                         "Petitboot System Configuration");
 635         screen->scr.frame.rtitle = NULL;
 636         screen->scr.frame.help = talloc_strdup(screen,
 637                         "tab=next, shift+tab=previous");
 638         nc_scr_frame_draw(&screen->scr);
 639
 640         scrollok(screen->scr.sub_ncw, true);
 641
 642         config_screen_update(screen, config, sysinfo);
 643
 644         wrefresh(screen->scr.main_ncw);
 645
 646         return screen;
 647 }