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        18
  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
  75                 struct nc_widget_button         *ok_b;
  76                 struct nc_widget_button         *cancel_b;
  77         } widgets;
  78 };
  79
  80 static struct config_screen *config_screen_from_scr(struct nc_scr *scr)
  81 {
  82         struct config_screen *config_screen;
  83
  84         assert(scr->sig == pb_config_screen_sig);
  85         config_screen = (struct config_screen *)
  86                 ((char *)scr - (size_t)&((struct config_screen *)0)->scr);
  87         assert(config_screen->scr.sig == pb_config_screen_sig);
  88         return config_screen;
  89 }
  90
  91 static void config_screen_process_key(struct nc_scr *scr, int key)
  92 {
  93         struct config_screen *screen = config_screen_from_scr(scr);
  94         bool handled;
  95
  96         handled = widgetset_process_key(screen->widgetset, key);
  97         if (screen->exit)
  98                 screen->on_exit(screen->cui);
  99         else if (handled)
 100                 wrefresh(screen->scr.main_ncw);
 101 }
 102
 103 static void config_screen_resize(struct nc_scr *scr)
 104 {
 105         struct config_screen *screen = config_screen_from_scr(scr);
 106         (void)screen;
 107 }
 108
 109 static int config_screen_post(struct nc_scr *scr)
 110 {
 111         struct config_screen *screen = config_screen_from_scr(scr);
 112         widgetset_post(screen->widgetset);
 113         nc_scr_frame_draw(scr);
 114         wrefresh(scr->main_ncw);
 115         return 0;
 116 }
 117
 118 static int config_screen_unpost(struct nc_scr *scr)
 119 {
 120         struct config_screen *screen = config_screen_from_scr(scr);
 121         widgetset_unpost(screen->widgetset);
 122         return 0;
 123 }
 124
 125 struct nc_scr *config_screen_scr(struct config_screen *screen)
 126 {
 127         return &screen->scr;
 128 }
 129
 130 static int screen_process_form(struct config_screen *screen)
 131 {
 132         const struct system_info *sysinfo = screen->cui->sysinfo;
 133         struct config *config = talloc_zero(screen, struct config);
 134         enum net_conf_type net_conf_type;
 135         struct interface_config *iface;
 136         char *str, *end;
 137         int rc;
 138
 139         config_set_defaults(config);
 140
 141         config->autoboot_enabled =
 142                 widget_checkbox_get_value(screen->widgets.autoboot_f);
 143
 144
 145         str = widget_textbox_get_value(screen->widgets.timeout_f);
 146         if (str) {
 147                 unsigned long x;
 148                 errno = 0;
 149                 x = strtoul(str, &end, 10);
 150                 if (!errno && end != str)
 151                         config->autoboot_timeout_sec = x;
 152         }
 153
 154         net_conf_type = widget_select_get_value(screen->widgets.network_f);
 155
 156         /* if we don't have any network interfaces, prevent per-interface
 157          * configuration */
 158         if (sysinfo->n_interfaces == 0)
 159                 net_conf_type = NET_CONF_TYPE_DHCP_ALL;
 160
 161         if (net_conf_type == NET_CONF_TYPE_DHCP_ALL) {
 162                 config->network.n_interfaces = 0;
 163
 164         } else {
 165                 int idx;
 166
 167                 iface = talloc_zero(config, struct interface_config);
 168                 config->network.n_interfaces = 1;
 169                 config->network.interfaces = talloc_array(config,
 170                                 struct interface_config *, 1);
 171                 config->network.interfaces[0] = iface;
 172
 173                 /* copy hwaddr (from the sysinfo interface data) to
 174                  * the configuration */
 175                 idx = widget_select_get_value(screen->widgets.iface_f);
 176                 memcpy(iface->hwaddr, sysinfo->interfaces[idx]->hwaddr,
 177                                 sizeof(iface->hwaddr));
 178         }
 179
 180         if (net_conf_type == NET_CONF_TYPE_DHCP_ONE) {
 181                 iface->method = CONFIG_METHOD_DHCP;
 182         }
 183
 184         if (net_conf_type == NET_CONF_TYPE_STATIC) {
 185                 iface->method = CONFIG_METHOD_STATIC;
 186                 iface->static_config.address = talloc_asprintf(iface, "%s/%s",
 187                                 widget_textbox_get_value(
 188                                         screen->widgets.ip_addr_f),
 189                                 widget_textbox_get_value(
 190                                         screen->widgets.ip_mask_f));
 191                 iface->static_config.gateway = talloc_strdup(iface,
 192                                 widget_textbox_get_value(
 193                                         screen->widgets.gateway_f));
 194         }
 195
 196         str = widget_textbox_get_value(screen->widgets.dns_f);
 197         if (str && strlen(str)) {
 198                 char *dns, *tmp;
 199                 int i;
 200
 201                 for (;;) {
 202                         dns = strtok_r(str, " \t", &tmp);
 203
 204                         if (!dns)
 205                                 break;
 206
 207                         i = config->network.n_dns_servers++;
 208                         config->network.dns_servers = talloc_realloc(config,
 209                                         config->network.dns_servers,
 210                                         const char *,
 211                                         config->network.n_dns_servers);
 212                         config->network.dns_servers[i] =
 213                                 talloc_strdup(config, dns);
 214
 215                         str = NULL;
 216                 }
 217         }
 218
 219         rc = cui_send_config(screen->cui, config);
 220         talloc_free(config);
 221
 222         if (rc)
 223                 pb_log("cui_send_config failed!\n");
 224         else
 225                 pb_debug("config sent!\n");
 226
 227         return 0;
 228 }
 229
 230 static void ok_click(void *arg)
 231 {
 232         struct config_screen *screen = arg;
 233         screen_process_form(screen);
 234         screen->exit = true;
 235 }
 236
 237 static void cancel_click(void *arg)
 238 {
 239         struct config_screen *screen = arg;
 240         screen->exit = true;
 241 }
 242
 243 static int layout_pair(struct config_screen *screen, int y,
 244                 struct nc_widget_label *label,
 245                 struct nc_widget *field)
 246 {
 247         struct nc_widget *label_w = widget_label_base(label);
 248         widget_move(label_w, y, screen->label_x);
 249         widget_move(field, y, screen->field_x);
 250         return max(widget_height(label_w), widget_height(field));
 251 }
 252
 253 static void config_screen_layout_widgets(struct config_screen *screen,
 254                 enum net_conf_type net_conf)
 255 {
 256         struct nc_widget *wl, *wf;
 257         bool show;
 258         int y, x;
 259
 260         y = 1;
 261
 262         y += layout_pair(screen, y, screen->widgets.autoboot_l,
 263                         widget_checkbox_base(screen->widgets.autoboot_f));
 264
 265         y += layout_pair(screen, y, screen->widgets.timeout_l,
 266                         widget_textbox_base(screen->widgets.timeout_f));
 267
 268         y += 1;
 269
 270         y += layout_pair(screen, y, screen->widgets.network_l,
 271                         widget_select_base(screen->widgets.network_f));
 272
 273         y += 1;
 274
 275         /* conditionally show iface select */
 276         wl = widget_label_base(screen->widgets.iface_l);
 277         wf = widget_select_base(screen->widgets.iface_f);
 278
 279         show = net_conf == NET_CONF_TYPE_DHCP_ONE ||
 280                 net_conf == NET_CONF_TYPE_STATIC;
 281
 282         widget_set_visible(wl, show);
 283         widget_set_visible(wf, show);
 284
 285         if (show)
 286                 y += layout_pair(screen, y, screen->widgets.iface_l, wf) + 1;
 287
 288         /* conditionally show static IP params */
 289         show = net_conf == NET_CONF_TYPE_STATIC;
 290
 291         wl = widget_label_base(screen->widgets.ip_addr_l);
 292         wf = widget_textbox_base(screen->widgets.ip_addr_f);
 293         widget_set_visible(wl, show);
 294         widget_set_visible(wf, show);
 295         x = screen->field_x + widget_width(wf) + 1;
 296
 297         if (show)
 298                 layout_pair(screen, y, screen->widgets.ip_addr_l, wf);
 299
 300         wl = widget_label_base(screen->widgets.ip_mask_l);
 301         wf = widget_textbox_base(screen->widgets.ip_mask_f);
 302         widget_set_visible(wl, show);
 303         widget_set_visible(wf, show);
 304
 305         if (show) {
 306                 widget_move(wl, y, x);
 307                 widget_move(wf, y, x + 2);
 308                 y += 1;
 309         }
 310
 311         wl = widget_label_base(screen->widgets.gateway_l);
 312         wf = widget_textbox_base(screen->widgets.gateway_f);
 313         widget_set_visible(wl, show);
 314         widget_set_visible(wf, show);
 315
 316         if (show)
 317                 y += layout_pair(screen, y, screen->widgets.gateway_l, wf) + 1;
 318
 319         y += layout_pair(screen, y, screen->widgets.dns_l,
 320                         widget_textbox_base(screen->widgets.dns_f));
 321
 322         y += 1;
 323
 324         widget_move(widget_button_base(screen->widgets.ok_b),
 325                         y, screen->field_x);
 326         widget_move(widget_button_base(screen->widgets.cancel_b),
 327                         y, screen->field_x + 10);
 328 }
 329
 330 static void config_screen_network_change(void *arg, int value)
 331 {
 332         struct config_screen *screen = arg;
 333         screen->net_conf_type = value;
 334         widgetset_unpost(screen->widgetset);
 335         config_screen_layout_widgets(screen, value);
 336         widgetset_post(screen->widgetset);
 337 }
 338
 339 static struct interface_config *first_active_interface(
 340                 const struct config *config)
 341 {
 342         unsigned int i;
 343
 344         for (i = 0; i < config->network.n_interfaces; i++) {
 345                 if (config->network.interfaces[i]->ignore)
 346                         continue;
 347                 return config->network.interfaces[i];
 348         }
 349         return NULL;
 350 }
 351
 352 static enum net_conf_type find_net_conf_type(const struct config *config)
 353 {
 354         struct interface_config *ifcfg;
 355
 356         ifcfg = first_active_interface(config);
 357
 358         if (!ifcfg)
 359                 return NET_CONF_TYPE_DHCP_ALL;
 360
 361         else if (ifcfg->method == CONFIG_METHOD_DHCP)
 362                 return NET_CONF_TYPE_DHCP_ONE;
 363
 364         else if (ifcfg->method == CONFIG_METHOD_STATIC)
 365                 return NET_CONF_TYPE_STATIC;
 366
 367         assert(0);
 368         return NET_CONF_TYPE_DHCP_ALL;
 369 }
 370
 371 static void config_screen_setup_widgets(struct config_screen *screen,
 372                 const struct config *config,
 373                 const struct system_info *sysinfo)
 374 {
 375         struct nc_widgetset *set = screen->widgetset;
 376         struct interface_config *ifcfg;
 377         char *str, *ip, *mask, *gw;
 378         enum net_conf_type type;
 379         unsigned int i;
 380
 381         build_assert(sizeof(screen->widgets) / sizeof(struct widget *)
 382                         == N_FIELDS);
 383
 384         type = screen->net_conf_type;
 385         ifcfg = first_active_interface(config);
 386
 387         screen->widgets.autoboot_l = widget_new_label(set, 0, 0, "Autoboot:");
 388         screen->widgets.autoboot_f = widget_new_checkbox(set, 0, 0,
 389                                         config->autoboot_enabled);
 390
 391         str = talloc_asprintf(screen, "%d", config->autoboot_timeout_sec);
 392         screen->widgets.timeout_l = widget_new_label(set, 0, 0, "Timeout:");
 393         screen->widgets.timeout_f = widget_new_textbox(set, 0, 0, 5, str);
 394
 395         screen->widgets.network_l = widget_new_label(set, 0, 0, "Network");
 396         screen->widgets.network_f = widget_new_select(set, 0, 0, 50);
 397
 398         widget_select_add_option(screen->widgets.network_f,
 399                                         NET_CONF_TYPE_DHCP_ALL,
 400                                         "DHCP on all active interfaces",
 401                                         type == NET_CONF_TYPE_DHCP_ALL);
 402         widget_select_add_option(screen->widgets.network_f,
 403                                         NET_CONF_TYPE_DHCP_ONE,
 404                                         "DHCP on a specific interface",
 405                                         type == NET_CONF_TYPE_DHCP_ONE);
 406         widget_select_add_option(screen->widgets.network_f,
 407                                         NET_CONF_TYPE_STATIC,
 408                                         "Static IP configuration",
 409                                         type == NET_CONF_TYPE_STATIC);
 410
 411         widget_select_on_change(screen->widgets.network_f,
 412                         config_screen_network_change, screen);
 413
 414         screen->widgets.iface_l = widget_new_label(set, 0, 0, "Device:");
 415         screen->widgets.iface_f = widget_new_select(set, 0, 0, 20);
 416
 417         for (i = 0; i < sysinfo->n_interfaces; i++) {
 418                 struct interface_info *info = sysinfo->interfaces[i];
 419                 bool is_default;
 420
 421                 is_default = ifcfg && !memcmp(ifcfg->hwaddr, info->hwaddr,
 422                                         sizeof(ifcfg->hwaddr));
 423
 424                 widget_select_add_option(screen->widgets.iface_f,
 425                                                 i, info->name, is_default);
 426         }
 427
 428         gw = ip = mask = NULL;
 429         if (ifcfg && ifcfg->method == CONFIG_METHOD_STATIC) {
 430                 char *sep;
 431
 432                 str = talloc_strdup(screen, ifcfg->static_config.address);
 433                 sep = strchr(str, '/');
 434                 ip = str;
 435
 436                 if (sep) {
 437                         *sep = '\0';
 438                         mask = sep + 1;
 439                 }
 440                 gw = ifcfg->static_config.gateway;
 441         }
 442
 443         screen->widgets.ip_addr_l = widget_new_label(set, 0, 0, "IP/mask:");
 444         screen->widgets.ip_addr_f = widget_new_textbox(set, 0, 0, 16, ip);
 445         screen->widgets.ip_mask_l = widget_new_label(set, 0, 0, "/");
 446         screen->widgets.ip_mask_f = widget_new_textbox(set, 0, 0, 3, mask);
 447
 448         screen->widgets.gateway_l = widget_new_label(set, 0, 0, "Gateway:");
 449         screen->widgets.gateway_f = widget_new_textbox(set, 0, 0, 16, gw);
 450
 451         str = talloc_strdup(screen, "");
 452         for (i = 0; i < config->network.n_dns_servers; i++) {
 453                 str = talloc_asprintf_append(str, "%s%s",
 454                                 (i == 0) ? "" : " ",
 455                                 config->network.dns_servers[i]);
 456         }
 457
 458         screen->widgets.dns_l = widget_new_label(set, 0, 0, "DNS Server(s):");
 459         screen->widgets.dns_f = widget_new_textbox(set, 0, 0, 32, str);
 460
 461         screen->widgets.ok_b = widget_new_button(set, 0, 0, 6, "OK",
 462                         ok_click, screen);
 463         screen->widgets.cancel_b = widget_new_button(set, 0, 0, 6, "Cancel",
 464                         cancel_click, screen);
 465 }
 466
 467 struct config_screen *config_screen_init(struct cui *cui,
 468                 const struct config *config,
 469                 const struct system_info *sysinfo,
 470                 void (*on_exit)(struct cui *))
 471 {
 472         struct config_screen *screen;
 473
 474         screen = talloc_zero(cui, struct config_screen);
 475         nc_scr_init(&screen->scr, pb_config_screen_sig, 0,
 476                         cui, config_screen_process_key,
 477                         config_screen_post, config_screen_unpost,
 478                         config_screen_resize);
 479
 480         screen->cui = cui;
 481         screen->on_exit = on_exit;
 482         screen->label_x = 2;
 483         screen->field_x = 17;
 484
 485         screen->scr.frame.ltitle = talloc_strdup(screen,
 486                         "Petitboot System Configuration");
 487         screen->scr.frame.rtitle = NULL;
 488         screen->scr.frame.help = talloc_strdup(screen,
 489                         "tab=next, shift+tab=previous");
 490         nc_scr_frame_draw(&screen->scr);
 491
 492         screen->widgetset = widgetset_create(screen, screen->scr.main_ncw,
 493                         screen->scr.sub_ncw);
 494         screen->net_conf_type = find_net_conf_type(config);
 495
 496         config_screen_setup_widgets(screen, config, sysinfo);
 497         config_screen_layout_widgets(screen, screen->net_conf_type);
 498
 499         wrefresh(screen->scr.main_ncw);
 500         scrollok(screen->scr.sub_ncw, true);
 501
 502         return screen;
 503 }