X-Git-Url: http://git.ozlabs.org/?p=petitboot;a=blobdiff_plain;f=discover%2Fuser-event.c;h=cc03ffd3bfb091aeed9245f9246d4d7d00325e1f;hp=7ceddb12c7e0b3def7dd4acd9b0795981cc6e43b;hb=9e869ebe3a5127575105d82c4d289d95cbed2db9;hpb=e2c92865481a5fb043c03c0cde625a96ca608699

diff --git a/discover/user-event.c b/discover/user-event.c
index 7ceddb1..cc03ffd 100644
--- a/discover/user-event.c
+++ b/discover/user-event.c
@@ -24,6 +24,7 @@
 #include <errno.h>
 #include <string.h>
 #include <sys/socket.h>
+#include <sys/stat.h>
 #include <sys/types.h>
 #include <sys/un.h>
 
@@ -37,6 +38,7 @@
 #include "resource.h"
 #include "event.h"
 #include "user-event.h"
+#include "sysinfo.h"
 
 
 #define MAC_ADDR_SIZE	6
@@ -62,6 +64,8 @@ static const char *event_action_name(enum event_action action)
 		return "boot";
 	case EVENT_ACTION_SYNC:
 		return "sync";
+	case EVENT_ACTION_PLUGIN:
+		return "plugin";
 	default:
 		break;
 	}
@@ -91,13 +95,13 @@ static struct resource *user_event_resource(struct discover_boot_option *opt,
 
 	siaddr = event_get_param(event, "siaddr");
 	if (!siaddr) {
-		pb_log("%s: next server option not found\n", __func__);
+		pb_log_fn("next server option not found\n");
 		return NULL;
 	}
 
 	boot_file = event_get_param(event, "bootfile");
 	if (!boot_file) {
-		pb_log("%s: bootfile not found\n", __func__);
+		pb_log_fn("bootfile not found\n");
 		return NULL;
 	}
 
@@ -145,7 +149,7 @@ static int parse_user_event(struct discover_context *ctx, struct event *event)
 	val = event_get_param(event, "name");
 
 	if (!val) {
-		pb_log("%s: no name found\n", __func__);
+		pb_log_fn("no name found\n");
 		goto fail_opt;
 	}
 
@@ -154,7 +158,7 @@ static int parse_user_event(struct discover_context *ctx, struct event *event)
 
 	d_opt->boot_image = user_event_resource(d_opt, event, false);
 	if (!d_opt->boot_image) {
-		pb_log("%s: no boot image found for %s!\n", __func__,
+		pb_log_fn("no boot image found for %s!\n",
 				opt->name);
 		goto fail_opt;
 	}
@@ -248,13 +252,14 @@ static char *parse_ip_addr(struct discover_context *ctx, const char *ip)
 struct pb_url *user_event_parse_conf_url(struct discover_context *ctx,
 		struct event *event, bool *is_complete)
 {
-	const char *conffile, *pathprefix, *host, *bootfile;
+	const char *conffile, *pathprefix, *host, *bootfile, *bootfile_url;
 	char *p, *basedir, *url_str;
 	struct pb_url *url;
 
 	conffile = event_get_param(event, "pxeconffile");
 	pathprefix = event_get_param(event, "pxepathprefix");
 	bootfile = event_get_param(event, "bootfile");
+	bootfile_url = event_get_param(event, "bootfile_url");
 
 	/* If we're given a conf file, we're able to generate a complete URL to
 	 * the configuration file, and the parser doesn't need to do any
@@ -284,7 +289,13 @@ struct pb_url *user_event_parse_conf_url(struct discover_context *ctx,
 
 	host = parse_host_addr(event);
 	if (!host) {
-		pb_log("%s: host address not found\n", __func__);
+		pb_log_fn("host address not found\n");
+
+		/* No full URLs and no host address? Check for DHCPv6 options */
+		if (bootfile_url && is_url(bootfile_url)) {
+			*is_complete = true;
+			return pb_url_parse(ctx, bootfile_url);
+		}
 		return NULL;
 	}
 
@@ -352,7 +363,7 @@ char **user_event_parse_conf_filenames(
 	}
 
 	if (!mac_addr && !ip_hex) {
-		pb_log("%s: neither mac nor ip parameter found\n", __func__);
+		pb_log_fn("neither mac nor ip parameter found\n");
 		return NULL;
 	}
 
@@ -385,7 +396,27 @@ static int user_event_dhcp(struct user_event *uev, struct event *event)
 	struct device_handler *handler = uev->handler;
 	struct discover_device *dev;
 
-	dev = discover_device_create(handler, event->device);
+	uint8_t hwaddr[MAC_ADDR_SIZE];
+
+	if (!event_get_param(event, "mac"))
+		return -1;
+	if (!event_get_param(event, "ip") && !event_get_param(event, "ipv6"))
+		return -1;
+
+	sscanf(event_get_param(event, "mac"),
+	       "%hhX:%hhX:%hhX:%hhX:%hhX:%hhX",
+	       hwaddr, hwaddr + 1, hwaddr + 2,
+	       hwaddr + 3, hwaddr + 4, hwaddr + 5);
+
+	if (event_get_param(event, "ipv6"))
+		system_info_set_interface_address(sizeof(hwaddr), hwaddr,
+						  event_get_param(event, "ipv6"));
+	else
+		system_info_set_interface_address(sizeof(hwaddr), hwaddr,
+						  event_get_param(event, "ip"));
+
+	dev = discover_device_create(handler, event_get_param(event, "mac"),
+					event->device);
 
 	device_handler_dhcp(handler, dev, event);
 
@@ -397,11 +428,19 @@ static int user_event_add(struct user_event *uev, struct event *event)
 	struct device_handler *handler = uev->handler;
 	struct discover_context *ctx;
 	struct discover_device *dev;
+	int rc;
 
-	dev = discover_device_create(handler, event->device);
+	/* In case this is a network interface, try to refer to it by UUID */
+	dev = discover_device_create(handler, event_get_param(event, "mac"),
+					event->device);
+	dev->device->id = talloc_strdup(dev, event->device);
 	ctx = device_handler_discover_context_create(handler, dev);
 
-	parse_user_event(ctx, event);
+	rc = parse_user_event(ctx, event);
+	if (rc) {
+		pb_log("parse_user_event returned %d\n", rc);
+		return rc;
+	}
 
 	device_handler_discover_context_commit(handler, ctx);
 
@@ -414,8 +453,13 @@ static int user_event_remove(struct user_event *uev, struct event *event)
 {
 	struct device_handler *handler = uev->handler;
 	struct discover_device *dev;
+	const char *mac = event_get_param(event, "mac");
+
+	if (mac)
+		dev = device_lookup_by_uuid(handler, event_get_param(event, "mac"));
+	else
+		dev = device_lookup_by_id(handler, event->device);
 
-	dev = device_lookup_by_id(handler, event->device);
 	if (!dev)
 		return 0;
 
@@ -439,15 +483,32 @@ static int user_event_url(struct user_event *uev, struct event *event)
 static int user_event_boot(struct user_event *uev, struct event *event)
 {
 	struct device_handler *handler = uev->handler;
-	struct boot_command *cmd = talloc(handler, struct boot_command);
+	struct boot_command *cmd = talloc_zero(handler, struct boot_command);
+	struct discover_boot_option *opt;
+	const char *name;
+
+	name = event_get_param(event, "name");
+	if (name) {
+		pb_log("Finding boot option %s @ %s\n", name, event->device);
+		opt = device_handler_find_option_by_name(handler,
+				event->device, name);
+		if (!opt) {
+			pb_log("No option with name %s\n", name);
+			return -1;
+		}
 
-	cmd->option_id = talloc_strdup(cmd, event_get_param(event, "id"));
-	cmd->boot_image_file = talloc_strdup(cmd, event_get_param(event, "image"));
-	cmd->initrd_file = talloc_strdup(cmd, event_get_param(event, "initrd"));
-	cmd->dtb_file = talloc_strdup(cmd, event_get_param(event, "dtb"));
-	cmd->boot_args = talloc_strdup(cmd, event_get_param(event, "args"));
+		pb_log("Found option with id %s!\n", opt->option->id);
+		cmd->option_id = talloc_strdup(cmd, opt->option->id);
+	} else {
+		pb_log("Booting based on full boot command\n");
+		cmd->option_id = talloc_strdup(cmd, event_get_param(event, "id"));
+		cmd->boot_image_file = talloc_strdup(cmd, event_get_param(event, "image"));
+		cmd->initrd_file = talloc_strdup(cmd, event_get_param(event, "initrd"));
+		cmd->dtb_file = talloc_strdup(cmd, event_get_param(event, "dtb"));
+		cmd->boot_args = talloc_strdup(cmd, event_get_param(event, "args"));
+	}
 
-	device_handler_boot(handler, cmd);
+	device_handler_boot(handler, false, cmd);
 
 	talloc_free(cmd);
 
@@ -466,6 +527,111 @@ static int user_event_sync(struct user_event *uev, struct event *event)
 	return 0;
 }
 
+static int process_uninstalled_plugin(struct user_event *uev,
+		struct event *event)
+{
+	struct device_handler *handler = uev->handler;
+	struct discover_boot_option *file_opt;
+	struct discover_device *device;
+	struct discover_context *ctx;
+	const char *path;
+	struct resource *res;
+
+	if (!event_get_param(event, "path")) {
+		pb_log("Uninstalled pb-plugin event missing path param\n");
+		return -1;
+	}
+
+	device = device_lookup_by_name(handler, event->device);
+	if (!device) {
+		pb_log("Couldn't find device matching %s for plugin\n",
+				event->device);
+		return -1;
+	}
+
+	ctx = device_handler_discover_context_create(handler, device);
+	file_opt = discover_boot_option_create(ctx, device);
+	file_opt->option->name = talloc_strdup(file_opt,
+			event_get_param(event, "name"));
+	file_opt->option->id = talloc_asprintf(file_opt, "%s@%p",
+			device->device->id, file_opt);
+	file_opt->option->type = DISCOVER_PLUGIN_OPTION;
+
+
+	path = event_get_param(event, "path");
+	/* path may be relative to root */
+	if (strncmp(device->mount_path, path, strlen(device->mount_path)) == 0) {
+		path += strlen(device->mount_path) + 1;
+	}
+
+	res = talloc(file_opt, struct resource);
+	resolve_resource_against_device(res, device, path);
+	file_opt->boot_image = res;
+
+	discover_context_add_boot_option(ctx, file_opt);
+	device_handler_discover_context_commit(handler, ctx);
+
+	return 0;
+}
+
+/*
+ * Notification of a plugin event. This can either be for an uninstalled plugin
+ * that pb-plugin has scanned, or the result of a plugin that pb-plugin has
+ * installed.
+ */
+static int user_event_plugin(struct user_event *uev, struct event *event)
+{
+	struct device_handler *handler = uev->handler;
+	char *executable, *executables, *saveptr;
+	struct plugin_option *opt;
+	const char *installed;
+
+	installed = event_get_param(event, "installed");
+	if (!installed || strncmp(installed, "no", strlen("no")) == 0)
+		return process_uninstalled_plugin(uev, event);
+
+	opt = talloc_zero(handler, struct plugin_option);
+	if (!opt)
+		return -1;
+	opt->name = talloc_strdup(opt, event_get_param(event, "name"));
+	opt->id = talloc_strdup(opt, event_get_param(event, "id"));
+	opt->version = talloc_strdup(opt, event_get_param(event, "version"));
+	opt->vendor = talloc_strdup(opt, event_get_param(event, "vendor"));
+	opt->vendor_id = talloc_strdup(opt, event_get_param(event, "vendor_id"));
+	opt->date = talloc_strdup(opt, event_get_param(event, "date"));
+	opt->plugin_file = talloc_strdup(opt,
+			event_get_param(event, "source_file"));
+
+	executables = talloc_strdup(opt, event_get_param(event, "executables"));
+	if (!executables) {
+		talloc_free(opt);
+		return -1;
+	}
+
+	/*
+	 * The 'executables' parameter is a space-delimited list of installed
+	 * executables
+	 */
+	executable = strtok_r(executables, " ", &saveptr);
+	while (executable) {
+		opt->executables = talloc_realloc(opt, opt->executables,
+						  char *, opt->n_executables + 1);
+		if (!opt->executables) {
+			talloc_free(opt);
+			return -1;
+		}
+		opt->executables[opt->n_executables++] = talloc_strdup(opt,
+								executable);
+		executable = strtok_r(NULL, " ", &saveptr);
+	}
+
+	device_handler_add_plugin_option(handler, opt);
+
+	talloc_free(executables);
+
+	return 0;
+}
+
 static void user_event_handle_message(struct user_event *uev, char *buf,
 	int len)
 {
@@ -491,24 +657,31 @@ static void user_event_handle_message(struct user_event *uev, char *buf,
 		break;
 	case EVENT_ACTION_URL:
 		result = user_event_url(uev, event);
-		goto out;
+		break;
 	case EVENT_ACTION_DHCP:
 		result = user_event_dhcp(uev, event);
-		goto out;
+		break;
 	case EVENT_ACTION_BOOT:
 		result = user_event_boot(uev, event);
 		break;
 	case EVENT_ACTION_SYNC:
 		result = user_event_sync(uev, event);
 		break;
+	case EVENT_ACTION_PLUGIN:
+		result = user_event_plugin(uev, event);
+		break;
 	default:
+		result = -1;
 		break;
 	}
 
+	if (result)
+		pb_log_fn("failed to handle action %d\n", event->action);
+
 	/* user_event_url() and user_event_dhcp() will steal the event context,
 	 * but all others still need to free */
-	talloc_free(event);
-out:
+	if (talloc_parent(event) == uev)
+		talloc_free(event);
 	return;
 }
 
@@ -521,12 +694,12 @@ static int user_event_process(void *arg)
 	len = recvfrom(uev->socket, buf, PBOOT_USER_EVENT_SIZE, 0, NULL, NULL);
 
 	if (len < 0) {
-		pb_log("%s: socket read failed: %s", __func__, strerror(errno));
+		pb_log_fn("socket read failed: %s\n", strerror(errno));
 		return 0;
 	}
 
 	if (len == 0) {
-		pb_log("%s: empty", __func__);
+		pb_log_fn("empty\n");
 		return 0;
 	}
 
@@ -581,6 +754,13 @@ struct user_event *user_event_init(struct device_handler *handler,
 			strerror(errno));
 	}
 
+	/* Don't allow events from non-priviledged users */
+	if (chown(PBOOT_USER_EVENT_SOCKET, 0, 0))
+		pb_log_fn("Error setting socket ownership: %m\n");
+	errno = 0;
+	if (chmod(PBOOT_USER_EVENT_SOCKET, 0660))
+		pb_log_fn("Error setting socket permissions: %m\n");
+
 	waiter_register_io(waitset, uev->socket, WAIT_IN,
 			user_event_process, uev);