ui/common: Set current console on boot command
[petitboot] / ui / common / discover-client.c
index d30498cdf48b4e8007d4e24a9515c326d4e2d902..6247dd0471b6b5fa6f8247adb68f872297eb6c52 100644 (file)
@@ -1,4 +1,5 @@
 
 
+#include <assert.h>
 #include <errno.h>
 #include <unistd.h>
 #include <stdlib.h>
 #include <errno.h>
 #include <unistd.h>
 #include <stdlib.h>
 #include <asm/byteorder.h>
 
 #include <talloc/talloc.h>
 #include <asm/byteorder.h>
 
 #include <talloc/talloc.h>
-#include <log.h>
+#include <log/log.h>
 
 
-#include "ui/common/discover-client.h"
+#include "discover-client.h"
 #include "pb-protocol/pb-protocol.h"
 
 struct discover_client {
        int fd;
        struct discover_client_ops ops;
 #include "pb-protocol/pb-protocol.h"
 
 struct discover_client {
        int fd;
        struct discover_client_ops ops;
+       int n_devices;
+       struct device **devices;
 };
 
 static int discover_client_destructor(void *arg)
 };
 
 static int discover_client_destructor(void *arg)
@@ -30,8 +33,220 @@ static int discover_client_destructor(void *arg)
        return 0;
 }
 
        return 0;
 }
 
-struct discover_client* discover_client_init(
-       const struct discover_client_ops *ops)
+void discover_client_destroy(struct discover_client *client)
+{
+       talloc_free(client);
+}
+
+static struct device *find_device(struct discover_client *client,
+               const char *id)
+{
+       int i;
+
+       for (i = 0; i < client->n_devices; i++) {
+               struct device *dev = client->devices[i];
+               if (!strcmp(dev->id, id))
+                       return dev;
+       }
+
+       return NULL;
+}
+
+static void device_add(struct discover_client *client, struct device *device)
+{
+       client->n_devices++;
+       client->devices = talloc_realloc(client, client->devices,
+                       struct device *, client->n_devices);
+
+       client->devices[client->n_devices - 1] = device;
+       talloc_steal(client, device);
+       list_init(&device->boot_options);
+
+       if (client->ops.device_add)
+               client->ops.device_add(device, client->ops.cb_arg);
+}
+
+static void boot_option_add(struct discover_client *client,
+               struct boot_option *opt)
+{
+       struct device *dev;
+
+       dev = find_device(client, opt->device_id);
+
+       /* we require that devices are already present before any boot options
+        * are added */
+       assert(dev);
+
+       talloc_steal(dev, opt);
+       list_add(&dev->boot_options, &opt->list);
+
+       if (client->ops.boot_option_add)
+               client->ops.boot_option_add(dev, opt, client->ops.cb_arg);
+}
+
+static void device_remove(struct discover_client *client, const char *id)
+{
+       struct device *device = NULL;
+       int i;
+
+       for (i = 0; i < client->n_devices; i++) {
+               if (!strcmp(client->devices[i]->id, id)) {
+                       device = client->devices[i];
+                       break;
+               }
+       }
+
+       if (!device)
+               return;
+
+       /* remove the device from the client's device array */
+       client->n_devices--;
+       memmove(&client->devices[i], &client->devices[i+1],
+                       (client->n_devices - i) * sizeof(client->devices[0]));
+       client->devices = talloc_realloc(client, client->devices,
+                       struct device *, client->n_devices);
+
+       /* notify the UI */
+       client->ops.device_remove(device, client->ops.cb_arg);
+
+       talloc_free(device);
+}
+
+void discover_client_enumerate(struct discover_client *client)
+{
+       struct boot_option *opt;
+       struct device *device;
+       int i;
+
+       for (i = 0; i < client->n_devices; i++) {
+               device = client->devices[i];
+               if (client->ops.device_add)
+                       client->ops.device_add(device, client->ops.cb_arg);
+
+               list_for_each_entry(&device->boot_options, opt, list)
+                       if (client->ops.boot_option_add)
+                               client->ops.boot_option_add(device, opt,
+                                               client->ops.cb_arg);
+       }
+}
+
+static void update_status(struct discover_client *client,
+               struct boot_status *status)
+{
+       if (client->ops.update_status)
+               client->ops.update_status(status, client->ops.cb_arg);
+}
+
+static void update_sysinfo(struct discover_client *client,
+               struct system_info *sysinfo)
+{
+       if (client->ops.update_sysinfo)
+               client->ops.update_sysinfo(sysinfo, client->ops.cb_arg);
+}
+
+static void update_config(struct discover_client *client,
+               struct config *config)
+{
+       if (client->ops.update_config)
+               client->ops.update_config(config, client->ops.cb_arg);
+}
+
+static int discover_client_process(void *arg)
+{
+       struct discover_client *client = arg;
+       struct pb_protocol_message *message;
+       struct system_info *sysinfo;
+       struct boot_status *status;
+       struct boot_option *opt;
+       struct config *config;
+       struct device *dev;
+       char *dev_id;
+       void *ctx;
+       int rc;
+
+       /* We use a temporary context for processing one message; persistent
+        * data is re-parented to the client in the callbacks. */
+       ctx = talloc_new(client);
+
+       message = pb_protocol_read_message(ctx, client->fd);
+
+       if (!message)
+               return -1;
+
+       switch (message->action) {
+       case PB_PROTOCOL_ACTION_DEVICE_ADD:
+               dev = talloc_zero(ctx, struct device);
+               list_init(&dev->boot_options);
+
+               rc = pb_protocol_deserialise_device(dev, message);
+               if (rc) {
+                       pb_log("%s: no device?\n", __func__);
+                       goto out;
+               }
+
+               device_add(client, dev);
+               break;
+       case PB_PROTOCOL_ACTION_BOOT_OPTION_ADD:
+               opt = talloc_zero(ctx, struct boot_option);
+
+               rc = pb_protocol_deserialise_boot_option(opt, message);
+               if (rc) {
+                       pb_log("%s: no boot_option?\n", __func__);
+                       goto out;
+               }
+
+               boot_option_add(client, opt);
+               break;
+       case PB_PROTOCOL_ACTION_DEVICE_REMOVE:
+               dev_id = pb_protocol_deserialise_string(ctx, message);
+               if (!dev_id) {
+                       pb_log("%s: no device id?\n", __func__);
+                       goto out;
+               }
+               device_remove(client, dev_id);
+               break;
+       case PB_PROTOCOL_ACTION_STATUS:
+               status = talloc_zero(ctx, struct boot_status);
+
+               rc = pb_protocol_deserialise_boot_status(status, message);
+               if (rc) {
+                       pb_log("%s: invalid status message?\n", __func__);
+                       goto out;
+               }
+               update_status(client, status);
+               break;
+       case PB_PROTOCOL_ACTION_SYSTEM_INFO:
+               sysinfo = talloc_zero(ctx, struct system_info);
+
+               rc = pb_protocol_deserialise_system_info(sysinfo, message);
+               if (rc) {
+                       pb_log("%s: invalid sysinfo message?\n", __func__);
+                       goto out;
+               }
+               update_sysinfo(client, sysinfo);
+               break;
+       case PB_PROTOCOL_ACTION_CONFIG:
+               config = talloc_zero(ctx, struct config);
+
+               rc = pb_protocol_deserialise_config(config, message);
+               if (rc) {
+                       pb_log("%s: invalid config message?\n", __func__);
+                       goto out;
+               }
+               update_config(client, config);
+               break;
+       default:
+               pb_log("%s: unknown action %d\n", __func__, message->action);
+       }
+
+out:
+       talloc_free(ctx);
+
+       return 0;
+}
+
+struct discover_client* discover_client_init(struct waitset *waitset,
+       const struct discover_client_ops *ops, void *cb_arg)
 {
        struct discover_client *client;
        struct sockaddr_un addr;
 {
        struct discover_client *client;
        struct sockaddr_un addr;
@@ -41,15 +256,19 @@ struct discover_client* discover_client_init(
                return NULL;
 
        memcpy(&client->ops, ops, sizeof(client->ops));
                return NULL;
 
        memcpy(&client->ops, ops, sizeof(client->ops));
+       client->ops.cb_arg = cb_arg;
 
        client->fd = socket(AF_UNIX, SOCK_STREAM, 0);
 
        client->fd = socket(AF_UNIX, SOCK_STREAM, 0);
-       if (!client->fd < 0) {
+       if (client->fd < 0) {
                pb_log("%s: socket: %s\n", __func__, strerror(errno));
                goto out_err;
        }
 
        talloc_set_destructor(client, discover_client_destructor);
 
                pb_log("%s: socket: %s\n", __func__, strerror(errno));
                goto out_err;
        }
 
        talloc_set_destructor(client, discover_client_destructor);
 
+       client->n_devices = 0;
+       client->devices = NULL;
+
        addr.sun_family = AF_UNIX;
        strcpy(addr.sun_path, PB_SOCKET_PATH);
 
        addr.sun_family = AF_UNIX;
        strcpy(addr.sun_path, PB_SOCKET_PATH);
 
@@ -58,6 +277,9 @@ struct discover_client* discover_client_init(
                goto out_err;
        }
 
                goto out_err;
        }
 
+       waiter_register_io(waitset, client->fd, WAIT_IN,
+                       discover_client_process, client);
+
        return client;
 
 out_err:
        return client;
 
 out_err:
@@ -65,49 +287,119 @@ out_err:
        return NULL;
 }
 
        return NULL;
 }
 
-int discover_client_get_fd(const struct discover_client *client)
+/* accessors for discovered devices */
+int discover_client_device_count(struct discover_client *client)
 {
 {
-       return client->fd;
+       return client->n_devices;
 }
 
 }
 
-void discover_client_destroy(struct discover_client *client)
+struct device *discover_client_get_device(struct discover_client *client,
+               int index)
 {
 {
-       talloc_free(client);
+       if (index < 0 || index >= client->n_devices)
+               return NULL;
+
+       return client->devices[index];
 }
 
 }
 
-int discover_client_process(struct discover_client *client)
+static void create_boot_command(struct boot_command *command,
+               const struct device *device __attribute__((unused)),
+               const struct boot_option *boot_option,
+               const struct pb_boot_data *data)
+{
+       command->option_id = boot_option ? boot_option->id : NULL;
+       command->boot_image_file = data->image;
+       command->initrd_file = data->initrd;
+       command->dtb_file = data->dtb;
+       command->boot_args = data->args;
+       command->tty = ttyname(STDIN_FILENO);
+}
+
+int discover_client_boot(struct discover_client *client,
+               const struct device *device,
+               const struct boot_option *boot_option,
+               const struct pb_boot_data *data)
 {
        struct pb_protocol_message *message;
 {
        struct pb_protocol_message *message;
-       struct device *dev;
-       char *dev_id;
+       struct boot_command boot_command;
+       int len, rc;
 
 
-       message = pb_protocol_read_message(client, client->fd);
+       create_boot_command(&boot_command, device, boot_option, data);
+
+       len = pb_protocol_boot_len(&boot_command);
+
+       message = pb_protocol_create_message(client,
+                       PB_PROTOCOL_ACTION_BOOT, len);
 
        if (!message)
                return -1;
 
 
        if (!message)
                return -1;
 
-       switch (message->action) {
-       case PB_PROTOCOL_ACTION_ADD:
-               dev = pb_protocol_deserialise_device(client, message);
-               if (!dev) {
-                       pb_log("%s: no device?\n", __func__);
-                       return 0;
-               }
-               client->ops.add_device(dev, client->ops.cb_arg);
-               talloc_free(dev);
-               break;
-       case PB_PROTOCOL_ACTION_REMOVE:
-               dev_id = pb_protocol_deserialise_string(client, message);
-               if (!dev_id) {
-                       pb_log("%s: no device id?\n", __func__);
-                       return 0;
-               }
-               client->ops.remove_device(dev_id, client->ops.cb_arg);
-               break;
-       default:
-               pb_log("%s: unknown action %d\n", __func__, message->action);
-       }
+       pb_protocol_serialise_boot_command(&boot_command,
+                       message->payload, len);
 
 
+       rc = pb_protocol_write_message(client->fd, message);
 
 
-       return 0;
+       return rc;
+}
+
+int discover_client_cancel_default(struct discover_client *client)
+{
+       struct pb_protocol_message *message;
+
+       message = pb_protocol_create_message(client,
+                       PB_PROTOCOL_ACTION_CANCEL_DEFAULT, 0);
+
+       if (!message)
+               return -1;
+
+       return pb_protocol_write_message(client->fd, message);
+}
+
+int discover_client_send_reinit(struct discover_client *client)
+{
+       struct pb_protocol_message *message;
+
+       message = pb_protocol_create_message(client,
+                       PB_PROTOCOL_ACTION_REINIT, 0);
+
+       if (!message)
+               return -1;
+
+       return pb_protocol_write_message(client->fd, message);
+}
+
+int discover_client_send_config(struct discover_client *client,
+               struct config *config)
+{
+       struct pb_protocol_message *message;
+       int len;
+
+       len = pb_protocol_config_len(config);
+
+       message = pb_protocol_create_message(client,
+                               PB_PROTOCOL_ACTION_CONFIG, len);
+       if (!message)
+               return -1;
+
+       pb_protocol_serialise_config(config, message->payload, len);
+
+       return pb_protocol_write_message(client->fd, message);
+}
+
+int discover_client_send_url(struct discover_client *client,
+               char *url)
+{
+       struct pb_protocol_message *message;
+       int len;
+
+       len = pb_protocol_url_len(url);
+
+       message = pb_protocol_create_message(client,
+                               PB_PROTOCOL_ACTION_ADD_URL, len);
+       if (!message)
+               return -1;
+
+       pb_protocol_serialise_url(url, message->payload, len);
+
+       return pb_protocol_write_message(client->fd, message);
 }
 }