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         bool                    exit;
  47         void                    (*on_exit)(struct cui *);
  48
  49         int                     label_x;
  50         int                     field_x;
  51         int                     network_config_y;
  52
  53         enum net_conf_type      net_conf_type;
  54
  55         struct {
  56                 struct nc_widget_checkbox       *autoboot_f;
  57                 struct nc_widget_label          *autoboot_l;
  58                 struct nc_widget_textbox        *timeout_f;
  59                 struct nc_widget_label          *timeout_l;
  60
  61                 struct nc_widget_label          *network_l;
  62                 struct nc_widget_select         *network_f;
  63
  64                 struct nc_widget_label          *iface_l;
  65                 struct nc_widget_select         *iface_f;
  66                 struct nc_widget_label          *ip_addr_l;
  67                 struct nc_widget_textbox        *ip_addr_f;
  68                 struct nc_widget_label          *ip_mask_l;
  69                 struct nc_widget_textbox        *ip_mask_f;
  70                 struct nc_widget_label          *gateway_l;
  71                 struct nc_widget_textbox        *gateway_f;
  72                 struct nc_widget_label          *dns_l;
  73                 struct nc_widget_textbox        *dns_f;
  74                 struct nc_widget_label          *dns_help_l;
  75
  76                 struct nc_widget_button         *ok_b;
  77                 struct nc_widget_button         *cancel_b;
  78         } widgets;
  79 };
  80
  81 static struct config_screen *config_screen_from_scr(struct nc_scr *scr)
  82 {
  83         struct config_screen *config_screen;
  84
  85         assert(scr->sig == pb_config_screen_sig);
  86         config_screen = (struct config_screen *)
  87                 ((char *)scr - (size_t)&((struct config_screen *)0)->scr);
  88         assert(config_screen->scr.sig == pb_config_screen_sig);
  89         return config_screen;
  90 }
  91
  92 static void config_screen_process_key(struct nc_scr *scr, int key)
  93 {
  94         struct config_screen *screen = config_screen_from_scr(scr);
  95         bool handled;
  96
  97         handled = widgetset_process_key(screen->widgetset, key);
  98         if (screen->exit)
  99                 screen->on_exit(screen->cui);
 100         else if (handled)
 101                 wrefresh(screen->scr.main_ncw);
 102 }
 103
 104 static void config_screen_resize(struct nc_scr *scr)
 105 {
 106         struct config_screen *screen = config_screen_from_scr(scr);
 107         (void)screen;
 108 }
 109
 110 static int config_screen_post(struct nc_scr *scr)
 111 {
 112         struct config_screen *screen = config_screen_from_scr(scr);
 113         widgetset_post(screen->widgetset);
 114         nc_scr_frame_draw(scr);
 115         wrefresh(scr->main_ncw);
 116         return 0;
 117 }
 118
 119 static int config_screen_unpost(struct nc_scr *scr)
 120 {
 121         struct config_screen *screen = config_screen_from_scr(scr);
 122         widgetset_unpost(screen->widgetset);
 123         return 0;
 124 }
 125
 126 struct nc_scr *config_screen_scr(struct config_screen *screen)
 127 {
 128         return &screen->scr;
 129 }
 130
 131 static int screen_process_form(struct config_screen *screen)
 132 {
 133         const struct system_info *sysinfo = screen->cui->sysinfo;
 134         struct config *config = talloc_zero(screen, struct config);
 135         enum net_conf_type net_conf_type;
 136         struct interface_config *iface;
 137         char *str, *end;
 138         int rc;
 139
 140         config_set_defaults(config);
 141
 142         config->autoboot_enabled =
 143                 widget_checkbox_get_value(screen->widgets.autoboot_f);
 144
 145
 146         str = widget_textbox_get_value(screen->widgets.timeout_f);
 147         if (str) {
 148                 unsigned long x;
 149                 errno = 0;
 150                 x = strtoul(str, &end, 10);
 151                 if (!errno && end != str)
 152                         config->autoboot_timeout_sec = x;
 153         }
 154
 155         net_conf_type = widget_select_get_value(screen->widgets.network_f);
 156
 157         /* if we don't have any network interfaces, prevent per-interface
 158          * configuration */
 159         if (sysinfo->n_interfaces == 0)
 160                 net_conf_type = NET_CONF_TYPE_DHCP_ALL;
 161
 162         if (net_conf_type == NET_CONF_TYPE_DHCP_ALL) {
 163                 config->network.n_interfaces = 0;
 164
 165         } else {
 166                 int idx;
 167
 168                 iface = talloc_zero(config, struct interface_config);
 169                 config->network.n_interfaces = 1;
 170                 config->network.interfaces = talloc_array(config,
 171                                 struct interface_config *, 1);
 172                 config->network.interfaces[0] = iface;
 173
 174                 /* copy hwaddr (from the sysinfo interface data) to
 175                  * the configuration */
 176                 idx = widget_select_get_value(screen->widgets.iface_f);
 177                 memcpy(iface->hwaddr, sysinfo->interfaces[idx]->hwaddr,
 178                                 sizeof(iface->hwaddr));
 179         }
 180
 181         if (net_conf_type == NET_CONF_TYPE_DHCP_ONE) {
 182                 iface->method = CONFIG_METHOD_DHCP;
 183         }
 184
 185         if (net_conf_type == NET_CONF_TYPE_STATIC) {
 186                 iface->method = CONFIG_METHOD_STATIC;
 187                 iface->static_config.address = talloc_asprintf(iface, "%s/%s",
 188                                 widget_textbox_get_value(
 189                                         screen->widgets.ip_addr_f),
 190                                 widget_textbox_get_value(
 191                                         screen->widgets.ip_mask_f));
 192                 iface->static_config.gateway = talloc_strdup(iface,
 193                                 widget_textbox_get_value(
 194                                         screen->widgets.gateway_f));
 195         }
 196
 197         str = widget_textbox_get_value(screen->widgets.dns_f);
 198         if (str && strlen(str)) {
 199                 char *dns, *tmp;
 200                 int i;
 201
 202                 for (;;) {
 203                         dns = strtok_r(str, " \t", &tmp);
 204
 205                         if (!dns)
 206                                 break;
 207
 208                         i = config->network.n_dns_servers++;
 209                         config->network.dns_servers = talloc_realloc(config,
 210                                         config->network.dns_servers,
 211                                         const char *,
 212                                         config->network.n_dns_servers);
 213                         config->network.dns_servers[i] =
 214                                 talloc_strdup(config, dns);
 215
 216                         str = NULL;
 217                 }
 218         }
 219
 220         rc = cui_send_config(screen->cui, config);
 221         talloc_free(config);
 222
 223         if (rc)
 224                 pb_log("cui_send_config failed!\n");
 225         else
 226                 pb_debug("config sent!\n");
 227
 228         return 0;
 229 }
 230
 231 static void ok_click(void *arg)
 232 {
 233         struct config_screen *screen = arg;
 234         screen_process_form(screen);
 235         screen->exit = true;
 236 }
 237
 238 static void cancel_click(void *arg)
 239 {
 240         struct config_screen *screen = arg;
 241         screen->exit = true;
 242 }
 243
 244 static int layout_pair(struct config_screen *screen, int y,
 245                 struct nc_widget_label *label,
 246                 struct nc_widget *field)
 247 {
 248         struct nc_widget *label_w = widget_label_base(label);
 249         widget_move(label_w, y, screen->label_x);
 250         widget_move(field, y, screen->field_x);
 251         return max(widget_height(label_w), widget_height(field));
 252 }
 253
 254 static void config_screen_layout_widgets(struct config_screen *screen,
 255                 enum net_conf_type net_conf)
 256 {
 257         struct nc_widget *wl, *wf;
 258         bool show;
 259         int y, x;
 260
 261         y = 1;
 262
 263         y += layout_pair(screen, y, screen->widgets.autoboot_l,
 264                         widget_checkbox_base(screen->widgets.autoboot_f));
 265
 266         y += layout_pair(screen, y, screen->widgets.timeout_l,
 267                         widget_textbox_base(screen->widgets.timeout_f));
 268
 269         y += 1;
 270
 271         y += layout_pair(screen, y, screen->widgets.network_l,
 272                         widget_select_base(screen->widgets.network_f));
 273
 274         y += 1;
 275
 276         /* conditionally show iface select */
 277         wl = widget_label_base(screen->widgets.iface_l);
 278         wf = widget_select_base(screen->widgets.iface_f);
 279
 280         show = net_conf == NET_CONF_TYPE_DHCP_ONE ||
 281                 net_conf == NET_CONF_TYPE_STATIC;
 282
 283         widget_set_visible(wl, show);
 284         widget_set_visible(wf, show);
 285
 286         if (show)
 287                 y += layout_pair(screen, y, screen->widgets.iface_l, wf) + 1;
 288
 289         /* conditionally show static IP params */
 290         show = net_conf == NET_CONF_TYPE_STATIC;
 291
 292         wl = widget_label_base(screen->widgets.ip_addr_l);
 293         wf = widget_textbox_base(screen->widgets.ip_addr_f);
 294         widget_set_visible(wl, show);
 295         widget_set_visible(wf, show);
 296         x = screen->field_x + widget_width(wf) + 1;
 297
 298         if (show)
 299                 layout_pair(screen, y, screen->widgets.ip_addr_l, wf);
 300
 301         wl = widget_label_base(screen->widgets.ip_mask_l);
 302         wf = widget_textbox_base(screen->widgets.ip_mask_f);
 303         widget_set_visible(wl, show);
 304         widget_set_visible(wf, show);
 305
 306         if (show) {
 307                 widget_move(wl, y, x);
 308                 widget_move(wf, y, x + 2);
 309                 y += 1;
 310         }
 311
 312         wl = widget_label_base(screen->widgets.gateway_l);
 313         wf = widget_textbox_base(screen->widgets.gateway_f);
 314         widget_set_visible(wl, show);
 315         widget_set_visible(wf, show);
 316
 317         if (show)
 318                 y += layout_pair(screen, y, screen->widgets.gateway_l, wf) + 1;
 319
 320         y += layout_pair(screen, y, screen->widgets.dns_l,
 321                         widget_textbox_base(screen->widgets.dns_f));
 322
 323         /* we show the DNS/DHCP help if we're configuring DHCP */
 324         show = net_conf != NET_CONF_TYPE_STATIC;
 325         wl = widget_label_base(screen->widgets.dns_help_l);
 326         widget_set_visible(wl, show);
 327         if (show) {
 328                 widget_move(wl, y, screen->field_x);
 329                 y += 1;
 330         }
 331
 332         y += 1;
 333
 334         widget_move(widget_button_base(screen->widgets.ok_b),
 335                         y, screen->field_x);
 336         widget_move(widget_button_base(screen->widgets.cancel_b),
 337                         y, screen->field_x + 10);
 338 }
 339
 340 static void config_screen_network_change(void *arg, int value)
 341 {
 342         struct config_screen *screen = arg;
 343         screen->net_conf_type = value;
 344         widgetset_unpost(screen->widgetset);
 345         config_screen_layout_widgets(screen, value);
 346         widgetset_post(screen->widgetset);
 347 }
 348
 349 static struct interface_config *first_active_interface(
 350                 const struct config *config)
 351 {
 352         unsigned int i;
 353
 354         for (i = 0; i < config->network.n_interfaces; i++) {
 355                 if (config->network.interfaces[i]->ignore)
 356                         continue;
 357                 return config->network.interfaces[i];
 358         }
 359         return NULL;
 360 }
 361
 362 static enum net_conf_type find_net_conf_type(const struct config *config)
 363 {
 364         struct interface_config *ifcfg;
 365
 366         ifcfg = first_active_interface(config);
 367
 368         if (!ifcfg)
 369                 return NET_CONF_TYPE_DHCP_ALL;
 370
 371         else if (ifcfg->method == CONFIG_METHOD_DHCP)
 372                 return NET_CONF_TYPE_DHCP_ONE;
 373
 374         else if (ifcfg->method == CONFIG_METHOD_STATIC)
 375                 return NET_CONF_TYPE_STATIC;
 376
 377         assert(0);
 378         return NET_CONF_TYPE_DHCP_ALL;
 379 }
 380
 381 static void config_screen_setup_widgets(struct config_screen *screen,
 382                 const struct config *config,
 383                 const struct system_info *sysinfo)
 384 {
 385         struct nc_widgetset *set = screen->widgetset;
 386         struct interface_config *ifcfg;
 387         char *str, *ip, *mask, *gw;
 388         enum net_conf_type type;
 389         unsigned int i;
 390
 391         build_assert(sizeof(screen->widgets) / sizeof(struct widget *)
 392                         == N_FIELDS);
 393
 394         type = screen->net_conf_type;
 395         ifcfg = first_active_interface(config);
 396
 397         screen->widgets.autoboot_l = widget_new_label(set, 0, 0, "Autoboot:");
 398         screen->widgets.autoboot_f = widget_new_checkbox(set, 0, 0,
 399                                         config->autoboot_enabled);
 400
 401         str = talloc_asprintf(screen, "%d", config->autoboot_timeout_sec);
 402         screen->widgets.timeout_l = widget_new_label(set, 0, 0, "Timeout:");
 403         screen->widgets.timeout_f = widget_new_textbox(set, 0, 0, 5, str);
 404
 405         screen->widgets.network_l = widget_new_label(set, 0, 0, "Network");
 406         screen->widgets.network_f = widget_new_select(set, 0, 0, 50);
 407
 408         widget_select_add_option(screen->widgets.network_f,
 409                                         NET_CONF_TYPE_DHCP_ALL,
 410                                         "DHCP on all active interfaces",
 411                                         type == NET_CONF_TYPE_DHCP_ALL);
 412         widget_select_add_option(screen->widgets.network_f,
 413                                         NET_CONF_TYPE_DHCP_ONE,
 414                                         "DHCP on a specific interface",
 415                                         type == NET_CONF_TYPE_DHCP_ONE);
 416         widget_select_add_option(screen->widgets.network_f,
 417                                         NET_CONF_TYPE_STATIC,
 418                                         "Static IP configuration",
 419                                         type == NET_CONF_TYPE_STATIC);
 420
 421         widget_select_on_change(screen->widgets.network_f,
 422                         config_screen_network_change, screen);
 423
 424         screen->widgets.iface_l = widget_new_label(set, 0, 0, "Device:");
 425         screen->widgets.iface_f = widget_new_select(set, 0, 0, 20);
 426
 427         for (i = 0; i < sysinfo->n_interfaces; i++) {
 428                 struct interface_info *info = sysinfo->interfaces[i];
 429                 bool is_default;
 430
 431                 is_default = ifcfg && !memcmp(ifcfg->hwaddr, info->hwaddr,
 432                                         sizeof(ifcfg->hwaddr));
 433
 434                 widget_select_add_option(screen->widgets.iface_f,
 435                                                 i, info->name, is_default);
 436         }
 437
 438         gw = ip = mask = NULL;
 439         if (ifcfg && ifcfg->method == CONFIG_METHOD_STATIC) {
 440                 char *sep;
 441
 442                 str = talloc_strdup(screen, ifcfg->static_config.address);
 443                 sep = strchr(str, '/');
 444                 ip = str;
 445
 446                 if (sep) {
 447                         *sep = '\0';
 448                         mask = sep + 1;
 449                 }
 450                 gw = ifcfg->static_config.gateway;
 451         }
 452
 453         screen->widgets.ip_addr_l = widget_new_label(set, 0, 0, "IP/mask:");
 454         screen->widgets.ip_addr_f = widget_new_textbox(set, 0, 0, 16, ip);
 455         screen->widgets.ip_mask_l = widget_new_label(set, 0, 0, "/");
 456         screen->widgets.ip_mask_f = widget_new_textbox(set, 0, 0, 3, mask);
 457
 458         screen->widgets.gateway_l = widget_new_label(set, 0, 0, "Gateway:");
 459         screen->widgets.gateway_f = widget_new_textbox(set, 0, 0, 16, gw);
 460
 461         str = talloc_strdup(screen, "");
 462         for (i = 0; i < config->network.n_dns_servers; i++) {
 463                 str = talloc_asprintf_append(str, "%s%s",
 464                                 (i == 0) ? "" : " ",
 465                                 config->network.dns_servers[i]);
 466         }
 467
 468         screen->widgets.dns_l = widget_new_label(set, 0, 0, "DNS Server(s):");
 469         screen->widgets.dns_f = widget_new_textbox(set, 0, 0, 32, str);
 470
 471         screen->widgets.dns_help_l = widget_new_label(set, 0, 0,
 472                         "(if not provided by DHCP server)");
 473
 474         screen->widgets.ok_b = widget_new_button(set, 0, 0, 6, "OK",
 475                         ok_click, screen);
 476         screen->widgets.cancel_b = widget_new_button(set, 0, 0, 6, "Cancel",
 477                         cancel_click, screen);
 478 }
 479
 480 struct config_screen *config_screen_init(struct cui *cui,
 481                 const struct config *config,
 482                 const struct system_info *sysinfo,
 483                 void (*on_exit)(struct cui *))
 484 {
 485         struct config_screen *screen;
 486
 487         screen = talloc_zero(cui, struct config_screen);
 488         nc_scr_init(&screen->scr, pb_config_screen_sig, 0,
 489                         cui, config_screen_process_key,
 490                         config_screen_post, config_screen_unpost,
 491                         config_screen_resize);
 492
 493         screen->cui = cui;
 494         screen->on_exit = on_exit;
 495         screen->label_x = 2;
 496         screen->field_x = 17;
 497
 498         screen->scr.frame.ltitle = talloc_strdup(screen,
 499                         "Petitboot System Configuration");
 500         screen->scr.frame.rtitle = NULL;
 501         screen->scr.frame.help = talloc_strdup(screen,
 502                         "tab=next, shift+tab=previous");
 503         nc_scr_frame_draw(&screen->scr);
 504
 505         screen->widgetset = widgetset_create(screen, screen->scr.main_ncw,
 506                         screen->scr.sub_ncw);
 507         screen->net_conf_type = find_net_conf_type(config);
 508
 509         config_screen_setup_widgets(screen, config, sysinfo);
 510         config_screen_layout_widgets(screen, screen->net_conf_type);
 511
 512         wrefresh(screen->scr.main_ncw);
 513         scrollok(screen->scr.sub_ncw, true);
 514
 515         return screen;
 516 }