discover: parse boot message from incoming ACTION_BOOT messages

[petitboot] / discover / discover-server.c

diff --git a/discover/discover-server.c b/discover/discover-server.c
index c35d27dddde4a64cfa8040eacc58481253e82417..76d03d1c10159924a3a73cf096d57827dd9ca31b 100644 (file)
--- a/discover/discover-server.c
+++ b/discover/discover-server.c
@@ -11,23 +11,25 @@
 #include <asm/byteorder.h>
 
 #include <talloc/talloc.h>
+#include <waiter/waiter.h>
+#include <log/log.h>
 
-#include "ui/common/device.h"
 #include "pb-protocol/pb-protocol.h"
 #include "list/list.h"
 
-#include "log.h"
-#include "waiter.h"
 #include "device-handler.h"
+#include "discover-server.h"
 
 struct discover_server {
        int socket;
+       struct waitset *waitset;
        struct waiter *waiter;
        struct list clients;
        struct device_handler *device_handler;
 };
 
 struct client {
+       struct discover_server *server;
        struct list_item list;
        int fd;
 };
@@ -66,17 +68,18 @@ static void print_clients(struct discover_server *server)
 {
        struct client *client;
 
-       printf("current clients [%p,%p,%p]:\n",
+       pb_log("current clients [%p,%p,%p]:\n",
                        &server->clients.head,
                        server->clients.head.prev,
                        server->clients.head.next);
        list_for_each_entry(&server->clients, client, list)
-               printf("\t[%p,%p,%p] client: %d\n", &client->list,
+               pb_log("\t[%p,%p,%p] client: %d\n", &client->list,
                                client->list.prev, client->list.next,
                                client->fd);
 }
 
-static int client_write_message(struct discover_server *server,
+static int client_write_message(
+               struct discover_server *server __attribute__((unused)),
                struct client *client, struct pb_protocol_message *message)
 {
        int rc;
@@ -89,7 +92,7 @@ static int client_write_message(struct discover_server *server,
 }
 
 static int write_add_message(struct discover_server *server,
-               struct client *client, struct device *dev)
+               struct client *client, const struct device *dev)
 {
        struct pb_protocol_message *message;
        int len;
@@ -124,10 +127,36 @@ static int write_remove_message(struct discover_server *server,
        return client_write_message(server, client, message);
 }
 
-static int discover_server_process(void *arg)
+static int discover_server_process_message(void *arg)
+{
+       struct pb_protocol_message *message;
+       struct boot_command *boot_command;
+       struct client *client = arg;
+
+       message = pb_protocol_read_message(client, client->fd);
+
+       if (!message)
+               return 0;
+
+       if (message->action != PB_PROTOCOL_ACTION_BOOT) {
+               pb_log("%s: invalid action %d\n", __func__, message->action);
+               return 0;
+       }
+
+       boot_command = pb_protocol_deserialise_boot_command(client, message);
+       if (!boot_command) {
+               pb_log("%s: no boot command?", __func__);
+               return 0;
+       }
+
+       /* todo: pass boot_command to client->server->device_handler */
+
+       return 0;
+}
+
+static int discover_server_process_connection(void *arg)
 {
        struct discover_server *server = arg;
-       struct device *devices;
        struct client *client;
        int fd, i, n_devices;
 
@@ -145,23 +174,50 @@ static int discover_server_process(void *arg)
        talloc_set_destructor(client, client_destructor);
 
        client->fd = fd;
+       client->server = server;
 
        /* send existing devices to client */
-       n_devices = device_handler_get_current_devices(server->device_handler,
-                       &devices);
-       for (i = 0; i < n_devices; i++)
-               write_add_message(server, client, &devices[i]);
+       n_devices = device_handler_get_device_count(server->device_handler);
+       for (i = 0; i < n_devices; i++) {
+               const struct device *device;
+
+               device = device_handler_get_device(server->device_handler, i);
+               write_add_message(server, client, device);
+       }
+
+       waiter_register(server->waitset, client->fd, WAIT_IN,
+                       discover_server_process_message, client);
 
        return 0;
 }
 
+void discover_server_notify_add(struct discover_server *server,
+               struct device *device)
+{
+       struct client *client;
+
+       list_for_each_entry(&server->clients, client, list)
+               write_add_message(server, client, device);
+
+}
+
+void discover_server_notify_remove(struct discover_server *server,
+               struct device *device)
+{
+       struct client *client;
+
+       list_for_each_entry(&server->clients, client, list)
+               write_remove_message(server, client, device->id);
+
+}
+
 void discover_server_set_device_source(struct discover_server *server,
                struct device_handler *handler)
 {
        server->device_handler = handler;
 }
 
-struct discover_server *discover_server_init(void)
+struct discover_server *discover_server_init(struct waitset *waitset)
 {
        struct discover_server *server;
        struct sockaddr_un addr;
@@ -171,6 +227,7 @@ struct discover_server *discover_server_init(void)
                return NULL;
 
        server->waiter = NULL;
+       server->waitset = waitset;
        list_init(&server->clients);
 
        unlink(PB_SOCKET_PATH);
@@ -196,8 +253,8 @@ struct discover_server *discover_server_init(void)
                goto out_err;
        }
 
-       server->waiter = waiter_register(server->socket, WAIT_IN,
-                       discover_server_process, server);
+       server->waiter = waiter_register(server->waitset, server->socket,
+                       WAIT_IN, discover_server_process_connection, server);
 
        return server;