10 #include <sys/socket.h>
12 #include <asm/byteorder.h>
14 #include <pb-config/pb-config.h>
15 #include <talloc/talloc.h>
16 #include <waiter/waiter.h>
19 #include "pb-protocol/pb-protocol.h"
20 #include "list/list.h"
22 #include "device-handler.h"
23 #include "discover-server.h"
27 struct discover_server {
29 struct waitset *waitset;
30 struct waiter *waiter;
33 struct device_handler *device_handler;
37 struct discover_server *server;
38 struct list_item list;
39 struct waiter *waiter;
45 static int server_destructor(void *arg)
47 struct discover_server *server = arg;
50 waiter_remove(server->waiter);
52 if (server->socket >= 0)
53 close(server->socket);
58 static int client_destructor(void *arg)
60 struct client *client = arg;
66 waiter_remove(client->waiter);
68 list_remove(&client->list);
74 static void print_clients(struct discover_server *server)
75 __attribute__((unused));
77 static void print_clients(struct discover_server *server)
79 struct client *client;
81 pb_debug("current clients [%p,%p,%p]:\n",
82 &server->clients.head,
83 server->clients.head.prev,
84 server->clients.head.next);
85 list_for_each_entry(&server->clients, client, list)
86 pb_debug("\t[%p,%p,%p] client: %d\n", &client->list,
87 client->list.prev, client->list.next,
91 static int client_write_message(
92 struct discover_server *server __attribute__((unused)),
93 struct client *client, struct pb_protocol_message *message)
97 if (client->remote_closed)
100 rc = pb_protocol_write_message(client->fd, message);
102 client->remote_closed = true;
107 static int write_device_add_message(struct discover_server *server,
108 struct client *client, const struct device *dev)
110 struct pb_protocol_message *message;
113 len = pb_protocol_device_len(dev);
115 message = pb_protocol_create_message(client,
116 PB_PROTOCOL_ACTION_DEVICE_ADD, len);
120 pb_protocol_serialise_device(dev, message->payload, len);
122 return client_write_message(server, client, message);
125 static int write_boot_option_add_message(struct discover_server *server,
126 struct client *client, const struct boot_option *opt)
128 struct pb_protocol_message *message;
131 len = pb_protocol_boot_option_len(opt);
133 message = pb_protocol_create_message(client,
134 PB_PROTOCOL_ACTION_BOOT_OPTION_ADD, len);
138 pb_protocol_serialise_boot_option(opt, message->payload, len);
140 return client_write_message(server, client, message);
143 static int write_plugin_option_add_message(struct discover_server *server,
144 struct client *client, const struct plugin_option *opt)
146 struct pb_protocol_message *message;
149 len = pb_protocol_plugin_option_len(opt);
151 message = pb_protocol_create_message(client,
152 PB_PROTOCOL_ACTION_PLUGIN_OPTION_ADD, len);
156 pb_protocol_serialise_plugin_option(opt, message->payload, len);
158 return client_write_message(server, client, message);
161 static int write_plugins_remove_message(struct discover_server *server,
162 struct client *client)
164 struct pb_protocol_message *message;
166 message = pb_protocol_create_message(client,
167 PB_PROTOCOL_ACTION_PLUGINS_REMOVE, 0);
171 /* No payload so nothing to serialise */
173 return client_write_message(server, client, message);
176 static int write_device_remove_message(struct discover_server *server,
177 struct client *client, char *dev_id)
179 struct pb_protocol_message *message;
182 len = strlen(dev_id) + sizeof(uint32_t);
184 message = pb_protocol_create_message(client,
185 PB_PROTOCOL_ACTION_DEVICE_REMOVE, len);
189 pb_protocol_serialise_string(message->payload, dev_id);
191 return client_write_message(server, client, message);
194 static int write_boot_status_message(struct discover_server *server,
195 struct client *client, const struct status *status)
197 struct pb_protocol_message *message;
200 len = pb_protocol_boot_status_len(status);
202 message = pb_protocol_create_message(client,
203 PB_PROTOCOL_ACTION_STATUS, len);
207 pb_protocol_serialise_boot_status(status, message->payload, len);
209 return client_write_message(server, client, message);
212 static int write_system_info_message(struct discover_server *server,
213 struct client *client, const struct system_info *sysinfo)
215 struct pb_protocol_message *message;
218 len = pb_protocol_system_info_len(sysinfo);
220 message = pb_protocol_create_message(client,
221 PB_PROTOCOL_ACTION_SYSTEM_INFO, len);
225 pb_protocol_serialise_system_info(sysinfo, message->payload, len);
227 return client_write_message(server, client, message);
230 static int write_config_message(struct discover_server *server,
231 struct client *client, const struct config *config)
233 struct pb_protocol_message *message;
236 len = pb_protocol_config_len(config);
238 message = pb_protocol_create_message(client,
239 PB_PROTOCOL_ACTION_CONFIG, len);
243 pb_protocol_serialise_config(config, message->payload, len);
245 return client_write_message(server, client, message);
248 static int discover_server_process_message(void *arg)
250 struct autoboot_option *autoboot_opt;
251 struct pb_protocol_message *message;
252 struct boot_command *boot_command;
253 struct client *client = arg;
254 struct config *config;
258 message = pb_protocol_read_message(client, client->fd);
266 switch (message->action) {
267 case PB_PROTOCOL_ACTION_BOOT:
268 boot_command = talloc(client, struct boot_command);
270 rc = pb_protocol_deserialise_boot_command(boot_command,
273 pb_log("%s: no boot command?", __func__);
277 device_handler_boot(client->server->device_handler,
281 case PB_PROTOCOL_ACTION_CANCEL_DEFAULT:
282 device_handler_cancel_default(client->server->device_handler);
285 case PB_PROTOCOL_ACTION_REINIT:
286 device_handler_reinit(client->server->device_handler);
289 case PB_PROTOCOL_ACTION_CONFIG:
290 config = talloc_zero(client, struct config);
292 rc = pb_protocol_deserialise_config(config, message);
294 pb_log("%s: no config?", __func__);
298 device_handler_update_config(client->server->device_handler,
302 case PB_PROTOCOL_ACTION_ADD_URL:
303 url = pb_protocol_deserialise_string((void *) client, message);
305 device_handler_process_url(client->server->device_handler,
309 case PB_PROTOCOL_ACTION_PLUGIN_INSTALL:
310 url = pb_protocol_deserialise_string((void *) client, message);
312 device_handler_install_plugin(client->server->device_handler,
316 case PB_PROTOCOL_ACTION_TEMP_AUTOBOOT:
317 autoboot_opt = talloc_zero(client, struct autoboot_option);
318 rc = pb_protocol_deserialise_temp_autoboot(autoboot_opt,
321 pb_log("can't parse temporary autoboot message\n");
325 device_handler_apply_temp_autoboot(
326 client->server->device_handler,
331 pb_log("%s: invalid action %d\n", __func__, message->action);
339 static int discover_server_process_connection(void *arg)
341 struct discover_server *server = arg;
342 struct statuslog_entry *entry;
343 int fd, rc, i, n_devices, n_plugins;
344 struct client *client;
346 /* accept the incoming connection */
347 fd = accept(server->socket, NULL, NULL);
349 pb_log("accept: %s\n", strerror(errno));
353 /* add to our list of clients */
354 client = talloc_zero(server, struct client);
355 list_add(&server->clients, &client->list);
357 talloc_set_destructor(client, client_destructor);
360 client->server = server;
361 client->waiter = waiter_register_io(server->waitset, client->fd,
362 WAIT_IN, discover_server_process_message,
365 /* send sysinfo to client */
366 rc = write_system_info_message(server, client, system_info_get());
370 /* send config to client */
371 rc = write_config_message(server, client, config_get());
375 /* send existing devices to client */
376 n_devices = device_handler_get_device_count(server->device_handler);
377 for (i = 0; i < n_devices; i++) {
378 const struct discover_boot_option *opt;
379 const struct discover_device *device;
381 device = device_handler_get_device(server->device_handler, i);
382 rc = write_device_add_message(server, client, device->device);
386 list_for_each_entry(&device->boot_options, opt, list) {
387 rc = write_boot_option_add_message(server, client,
394 /* send status backlog to client */
395 list_for_each_entry(&server->status, entry, list)
396 write_boot_status_message(server, client, entry->status);
398 /* send installed plugins to client */
399 n_plugins = device_handler_get_plugin_count(server->device_handler);
400 for (i = 0; i < n_plugins; i++) {
401 const struct plugin_option *plugin;
403 plugin = device_handler_get_plugin(server->device_handler, i);
404 write_plugin_option_add_message(server, client, plugin);
410 void discover_server_notify_device_add(struct discover_server *server,
411 struct device *device)
413 struct client *client;
415 list_for_each_entry(&server->clients, client, list)
416 write_device_add_message(server, client, device);
420 void discover_server_notify_boot_option_add(struct discover_server *server,
421 struct boot_option *boot_option)
423 struct client *client;
425 list_for_each_entry(&server->clients, client, list)
426 write_boot_option_add_message(server, client, boot_option);
429 void discover_server_notify_device_remove(struct discover_server *server,
430 struct device *device)
432 struct client *client;
434 list_for_each_entry(&server->clients, client, list)
435 write_device_remove_message(server, client, device->id);
439 void discover_server_notify_boot_status(struct discover_server *server,
440 struct status *status)
442 struct statuslog_entry *entry;
443 struct client *client;
445 /* Duplicate the status struct to add to the backlog */
446 entry = talloc(server, struct statuslog_entry);
448 pb_log("Failed to allocated saved status!\n");
450 entry->status = talloc(entry, struct status);
452 entry->status->type = status->type;
453 entry->status->message = talloc_strdup(entry->status,
455 entry->status->backlog = true;
456 list_add_tail(&server->status, &entry->list);
462 list_for_each_entry(&server->clients, client, list)
463 write_boot_status_message(server, client, status);
466 void discover_server_notify_system_info(struct discover_server *server,
467 const struct system_info *sysinfo)
469 struct client *client;
471 list_for_each_entry(&server->clients, client, list)
472 write_system_info_message(server, client, sysinfo);
475 void discover_server_notify_config(struct discover_server *server,
476 const struct config *config)
478 struct client *client;
480 list_for_each_entry(&server->clients, client, list)
481 write_config_message(server, client, config);
484 void discover_server_notify_plugin_option_add(struct discover_server *server,
485 struct plugin_option *opt)
487 struct client *client;
489 list_for_each_entry(&server->clients, client, list)
490 write_plugin_option_add_message(server, client, opt);
493 void discover_server_notify_plugins_remove(struct discover_server *server)
495 struct client *client;
497 list_for_each_entry(&server->clients, client, list)
498 write_plugins_remove_message(server, client);
501 void discover_server_set_device_source(struct discover_server *server,
502 struct device_handler *handler)
504 server->device_handler = handler;
507 struct discover_server *discover_server_init(struct waitset *waitset)
509 struct discover_server *server;
510 struct sockaddr_un addr;
512 server = talloc(NULL, struct discover_server);
516 server->waiter = NULL;
517 server->waitset = waitset;
518 list_init(&server->clients);
519 list_init(&server->status);
521 unlink(PB_SOCKET_PATH);
523 server->socket = socket(AF_UNIX, SOCK_STREAM, 0);
524 if (server->socket < 0) {
525 pb_log("error creating server socket: %s\n", strerror(errno));
529 talloc_set_destructor(server, server_destructor);
531 addr.sun_family = AF_UNIX;
532 strcpy(addr.sun_path, PB_SOCKET_PATH);
534 if (bind(server->socket, (struct sockaddr *)&addr, sizeof(addr))) {
535 pb_log("error binding server socket: %s\n", strerror(errno));
539 if (listen(server->socket, 8)) {
540 pb_log("server socket listen: %s\n", strerror(errno));
544 server->waiter = waiter_register_io(server->waitset, server->socket,
545 WAIT_IN, discover_server_process_connection, server);
554 void discover_server_destroy(struct discover_server *server)