git.ozlabs.org Git - petitboot/blob - ui/twin/pbt-client.c

   1 /*
   2  *  Copyright Geoff Levand <geoff@infradead.org>
   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 #define _GNU_SOURCE
  23 #include <assert.h>
  24 #include <string.h>
  25
  26 #include <pb-protocol/pb-protocol.h>
  27
  28 #include "pbt-client.h"
  29
  30 #include "log/log.h"
  31 #include "talloc/talloc.h"
  32 #include "waiter/waiter.h"
  33 #include "ui/common/discover-client.h"
  34
  35 static struct pb_opt_data *pbt_opt_data_from_item(struct pbt_item *item)
  36 {
  37         return item->data;
  38 }
  39
  40 void pbt_client_resize(struct pbt_client *client)
  41 {
  42         (void)client; // TODO
  43 }
  44
  45 void pbt_frame_status_printf(struct pbt_frame *frame, const char *format, ...)
  46 {
  47         va_list ap;
  48
  49         va_start(ap, format);
  50         // TODO
  51         (void)frame;
  52         va_end(ap);
  53 }
  54
  55 static int pbt_client_boot(struct pbt_item *item)
  56 {
  57         int result;
  58         struct pb_opt_data *opt_data = pbt_opt_data_from_item(item);
  59
  60         pb_log("%s: %s\n", __func__, pbt_item_name(item));
  61
  62         pbt_frame_status_printf(&item->pbt_client->frame, "Booting %s...",
  63                 pbt_item_name(item));
  64
  65         assert(item->pbt_client->boot_cb);
  66         result = item->pbt_client->boot_cb(item->pbt_client, opt_data);
  67
  68         if (!result) {
  69                 sleep(item->pbt_client->dry_run ? 1 : 60);
  70         }
  71
  72         pb_log("%s: failed: %s\n", __func__, opt_data->bd->image);
  73
  74         pbt_frame_status_printf(&item->pbt_client->frame, "Failed: kexec %s",
  75                 opt_data->bd->image);
  76
  77         return 0;
  78 }
  79
  80 static int pbt_client_on_edit(struct pbt_item *item)
  81 {
  82         DBGS("*** %s ***\n", pbt_item_name(item));
  83         return 0;
  84 }
  85
  86 static int pbt_device_add(struct device *dev, struct pbt_client *client)
  87 {
  88         struct pbt_frame *const frame = &client->frame;
  89         struct pbt_item *device_item;
  90         struct boot_option *opt;
  91         struct pbt_quad q;
  92         const char *icon_file;
  93         struct pbt_item *selected_item = NULL;
  94
  95         pb_log("%s: %p %s: n_options %d\n", __func__, dev, dev->id,
  96                 dev->n_options);
  97
  98         pb_protocol_dump_device(dev, "", pb_log_get_stream());
  99
 100         /* device_item */
 101
 102         // FIXME: check for existing dev->id
 103
 104         icon_file = dev->icon_file ? dev->icon_file : pbt_icon_chooser(dev->id);
 105
 106         device_item = pbt_item_create_reduced(frame->top_menu, dev->id,
 107                 frame->top_menu->n_items, icon_file);
 108
 109         if (!device_item)
 110                 goto fail_device_item_create;
 111
 112         device_item->pb_device = dev;
 113         frame->top_menu->n_items++;
 114
 115         /* sub_menu */
 116
 117         q.x = frame->top_menu->window->pixmap->width;
 118         q.y = 0;
 119         q.width = frame->top_menu->scr->tscreen->width - q.x;
 120         q.height = frame->top_menu->scr->tscreen->height;
 121
 122         device_item->sub_menu = pbt_menu_create(device_item, dev->id,
 123                 frame->top_menu->scr, frame->top_menu, &q,
 124                 &frame->top_menu->layout);
 125         if (!device_item->sub_menu)
 126                 goto fail_sub_menu_create;
 127
 128         list_for_each_entry(&dev->boot_options, opt, list) {
 129                 struct pbt_item *i;
 130                 struct pb_opt_data *opt_data;
 131
 132                 i = pbt_item_create(device_item->sub_menu,
 133                         opt->id, device_item->sub_menu->n_items++,
 134                         opt->icon_file, opt->name, opt->description);
 135
 136                 if (!i) {
 137                         assert(0);
 138                         break;
 139                 }
 140
 141                 i->pb_opt = opt;
 142                 i->pbt_client = client;
 143                 i->on_execute = pbt_client_boot;
 144                 i->on_edit = pbt_client_on_edit;
 145
 146                 i->data = opt_data = talloc(i, struct pb_opt_data);
 147                 opt_data->name = opt->name;
 148                 opt_data->bd = talloc(i, struct pb_boot_data);
 149                 opt_data->bd->image = talloc_strdup(opt_data->bd,
 150                         opt->boot_image_file);
 151                 opt_data->bd->initrd = talloc_strdup(opt_data->bd,
 152                         opt->initrd_file);
 153                 opt_data->bd->args = talloc_strdup(opt_data->bd,
 154                         opt->boot_args);
 155                 opt_data->dev = dev;
 156                 opt_data->opt = opt;
 157                 opt_data->opt_hash = pb_opt_hash(dev, opt);
 158
 159                 /* Select the first item as default. */
 160
 161                 if (!selected_item)
 162                         selected_item = i;
 163
 164                 /* If this is the default_item select it and start timer. */
 165
 166                 if (opt_data->opt_hash
 167                         == device_item->sub_menu->default_item_hash) {
 168                         selected_item = i;
 169                         ui_timer_kick(&client->signal_data.timer);
 170                 }
 171         }
 172
 173         pbt_menu_set_selected(device_item->sub_menu, selected_item);
 174
 175         pbt_menu_show(frame->top_menu, 1);
 176         twin_screen_update(client->frame.scr->tscreen);
 177
 178         return 0;
 179
 180 fail_sub_menu_create:
 181 fail_device_item_create:
 182         assert(0);
 183         return -1;
 184 }
 185
 186 static void pbt_device_remove(struct device *dev, struct pbt_client *client)
 187 {
 188         struct pbt_frame *const frame = &client->frame;
 189         struct list *i_list = frame->top_menu->item_list;
 190         twin_window_t *last_window = NULL;
 191         struct pbt_item *removed_item;
 192         struct pbt_item *prev_item;
 193         struct pbt_item *next_item;
 194         struct pbt_item *i;
 195
 196         pb_log("%s: %p %s: n_options %d\n", __func__, dev, dev->id,
 197                 dev->n_options);
 198
 199         pb_protocol_dump_device(dev, "", pb_log_get_stream());
 200
 201         removed_item = NULL;
 202         list_for_each_entry(i_list, i, list) {
 203                 if (i->pb_device == dev) {
 204                         removed_item = i;
 205                         break;
 206                 }
 207         }
 208
 209         if (!removed_item) {
 210                 pb_log("%s: %p %s: unknown device\n", __func__, dev, dev->id);
 211                 assert(0 && "unknown device");
 212                 return;
 213         }
 214
 215         prev_item = list_prev_entry(i_list, removed_item, list);
 216         next_item = list_next_entry(i_list, removed_item, list);
 217
 218         if (removed_item == frame->top_menu->selected) {
 219                 if (prev_item)
 220                         pbt_menu_set_selected(frame->top_menu, prev_item);
 221                 else if (next_item)
 222                         pbt_menu_set_selected(frame->top_menu, next_item);
 223                 else
 224                         assert(0 && "empty list");
 225         }
 226
 227         if (next_item) {
 228
 229                 /* Shift items up. */
 230
 231                 i = next_item;
 232                 list_for_each_entry_continue(i_list, i, list) {
 233                         last_window = i->window;
 234                         i->window = list_prev_entry(i_list, i, list)->window;
 235                         twin_window_set_name(i->window, last_window->name);
 236                         i->window->client_data = last_window->client_data;
 237                 }
 238         }
 239
 240         twin_window_hide(last_window);
 241         twin_window_destroy(last_window);
 242
 243         list_remove(&removed_item->list);
 244         removed_item->window = NULL;
 245         talloc_free(removed_item);
 246         frame->top_menu->n_items--;
 247
 248         pbt_menu_show(frame->top_menu, 1);
 249         twin_screen_update(client->frame.scr->tscreen);
 250 }
 251
 252 static struct discover_client_ops pbt_client_ops = {
 253         .device_add = (void *)pbt_device_add,
 254         .device_remove = (void *)pbt_device_remove,
 255 };
 256
 257 static void pbt_client_destructor(struct pbt_client *client)
 258 {
 259         pb_log("%s\n", __func__);
 260
 261         // move to screen twin_x11_destroy(twin_ctx);
 262         talloc_free(client->discover_client);
 263         memset(client, 0, sizeof(*client));
 264 }
 265
 266 struct pbt_client *pbt_client_init(enum pbt_twin_backend backend,
 267         unsigned int width, unsigned int height,
 268         int (*boot_cb)(struct pbt_client *, struct pb_opt_data *),
 269         int start_deamon, int dry_run)
 270 {
 271         struct pbt_client *pbt_client;
 272         unsigned int i;
 273
 274         pbt_client = talloc_zero(NULL, struct pbt_client);
 275
 276         if (!pbt_client) {
 277                 pb_log("%s: alloc pbt_client failed.\n", __func__);
 278                 fprintf(stderr, "%s: alloc pbt_client failed.\n", __func__);
 279                 goto fail_alloc;
 280         }
 281
 282         talloc_set_destructor(pbt_client, (void *)pbt_client_destructor);
 283
 284         pbt_client->waitset = waitset_create(pbt_client);
 285
 286         pbt_client->sig = "pbt_client";
 287         pbt_client->boot_cb = boot_cb;
 288         pbt_client->dry_run = dry_run;
 289         pbt_client->frame.scr = pbt_scr_init(pbt_client, pbt_client->waitset,
 290                         backend, width, height, NULL, NULL);
 291
 292
 293         if (!pbt_client->frame.scr)
 294                 goto fail_scr_init;
 295
 296         /* Loop here for scripts that just started the server. */
 297
 298 retry_start:
 299         for (i = start_deamon ? 2 : 10; i; i--) {
 300                 pbt_client->discover_client
 301                         = discover_client_init(&pbt_client_ops, pbt_client);
 302                 if (pbt_client->discover_client || !i)
 303                         break;
 304                 pb_log("%s: waiting for server %d\n", __func__, i);
 305                 sleep(1);
 306         }
 307
 308         if (!pbt_client->discover_client && start_deamon) {
 309                 int result;
 310
 311                 start_deamon = 0;
 312
 313                 result = pb_start_daemon();
 314
 315                 if (!result)
 316                         goto retry_start;
 317
 318                 pb_log("%s: discover_client_init failed.\n", __func__);
 319                 fprintf(stderr, "%s: error: discover_client_init failed.\n",
 320                         __func__);
 321                 fprintf(stderr, "could not start pb-discover, the petitboot "
 322                         "daemon.\n");
 323                 goto fail_client_init;
 324         }
 325
 326         if (!pbt_client->discover_client) {
 327                 pb_log("%s: discover_client_init failed.\n", __func__);
 328                 fprintf(stderr, "%s: error: discover_client_init failed.\n",
 329                         __func__);
 330                 fprintf(stderr, "check that pb-discover, "
 331                         "the petitboot daemon is running.\n");
 332                 goto fail_client_init;
 333         }
 334
 335         waiter_register(pbt_client->waitset,
 336                         discover_client_get_fd(pbt_client->discover_client),
 337                         WAIT_IN, (waiter_cb)discover_client_process,
 338                         pbt_client->discover_client);
 339
 340         return pbt_client;
 341
 342 fail_client_init:
 343         talloc_free(pbt_client);
 344 fail_scr_init:
 345 fail_alloc:
 346         return NULL;
 347 }