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