#include "config.h"
#endif
-#define _GNU_SOURCE
#include <assert.h>
#include <errno.h>
#include <string.h>
#include <sys/un.h>
#include <log/log.h>
+#include <url/url.h>
+#include <types/types.h>
#include <talloc/talloc.h>
#include <waiter/waiter.h>
#include "device-handler.h"
+#include "resource.h"
#include "event.h"
#include "user-event.h"
+#include "sysinfo.h"
+#define MAC_ADDR_SIZE 6
+#define IP_ADDR_SIZE 4
+
struct user_event {
struct device_handler *handler;
int socket;
};
+static const char *event_action_name(enum event_action action)
+{
+ switch (action) {
+ case EVENT_ACTION_ADD:
+ return "add";
+ case EVENT_ACTION_REMOVE:
+ return "remove";
+ case EVENT_ACTION_URL:
+ return "url";
+ case EVENT_ACTION_DHCP:
+ return "dhcp";
+ case EVENT_ACTION_BOOT:
+ return "boot";
+ case EVENT_ACTION_SYNC:
+ return "sync";
+ case EVENT_ACTION_PLUGIN:
+ return "plugin";
+ default:
+ break;
+ }
+
+ return "unknown";
+}
+
static void user_event_print_event(struct event __attribute__((unused)) *event)
{
- const char *action, *params[] = {
- "name", "image", "args",
- NULL,
- };
int i;
- action = event->action == EVENT_ACTION_ADD ? "add" : "remove";
+ pb_debug("user_event %s event:\n", event_action_name(event->action));
+ pb_debug("\tdevice: %s\n", event->device);
- pb_log("user_event %s event:\n", action);
- pb_log("\tdevice: %s\n", event->device);
+ for (i = 0; i < event->n_params; i++)
+ pb_debug("\t%-12s => %s\n",
+ event->params[i].name, event->params[i].value);
+}
+
+static struct resource *user_event_resource(struct discover_boot_option *opt,
+ struct event *event, bool gen_boot_args_sigfile)
+{
+ const char *siaddr, *boot_file;
+ struct resource *res;
+ struct pb_url *url;
+ char *url_str;
+
+ siaddr = event_get_param(event, "siaddr");
+ if (!siaddr) {
+ pb_log("%s: next server option not found\n", __func__);
+ return NULL;
+ }
+
+ boot_file = event_get_param(event, "bootfile");
+ if (!boot_file) {
+ pb_log("%s: bootfile not found\n", __func__);
+ return NULL;
+ }
- for (i = 0; params[i]; i++)
- pb_log("\t%-12s => %s\n",
- params[i], event_get_param(event, params[i]));
+ if (gen_boot_args_sigfile) {
+ char* args_sigfile_default = talloc_asprintf(opt,
+ "%s.cmdline.sig", boot_file);
+ url_str = talloc_asprintf(opt, "%s%s/%s", "tftp://", siaddr,
+ args_sigfile_default);
+ talloc_free(args_sigfile_default);
+ }
+ else
+ url_str = talloc_asprintf(opt, "%s%s/%s", "tftp://", siaddr,
+ boot_file);
+ url = pb_url_parse(opt, url_str);
+ talloc_free(url_str);
+
+ if (!url)
+ return NULL;
+
+ res = create_url_resource(opt, url);
+ if (!res) {
+ talloc_free(url);
+ return NULL;
+ }
+
+ return res;
+}
+
+static int parse_user_event(struct discover_context *ctx, struct event *event)
+{
+ struct discover_boot_option *d_opt;
+ char *server_ip, *root_dir, *p;
+ struct boot_option *opt;
+ struct device *dev;
+ const char *val;
+
+ dev = ctx->device->device;
+
+ d_opt = discover_boot_option_create(ctx, ctx->device);
+ if (!d_opt)
+ goto fail;
+
+ opt = d_opt->option;
+
+ val = event_get_param(event, "name");
+
+ if (!val) {
+ pb_log("%s: no name found\n", __func__);
+ goto fail_opt;
+ }
+
+ opt->id = talloc_asprintf(opt, "%s#%s", dev->id, val);
+ opt->name = talloc_strdup(opt, val);
+
+ 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__,
+ opt->name);
+ goto fail_opt;
+ }
+ d_opt->args_sig_file = user_event_resource(d_opt, event, true);
+
+ val = event_get_param(event, "rootpath");
+ if (val) {
+ server_ip = talloc_strdup(opt, val);
+ p = strchr(server_ip, ':');
+ if (p) {
+ root_dir = talloc_strdup(opt, p + 1);
+ *p = '\0';
+ opt->boot_args = talloc_asprintf(opt, "%s%s:%s",
+ "root=/dev/nfs ip=any nfsroot=",
+ server_ip, root_dir);
+
+ talloc_free(root_dir);
+ } else {
+ opt->boot_args = talloc_asprintf(opt, "%s",
+ "root=/dev/nfs ip=any nfsroot=");
+ }
+
+ talloc_free(server_ip);
+ }
+
+ opt->description = talloc_asprintf(opt, "%s %s", opt->boot_image_file,
+ opt->boot_args ? : "");
+
+ if (event_get_param(event, "default"))
+ opt->is_default = true;
+
+ discover_context_add_boot_option(ctx, d_opt);
+
+ return 0;
+
+fail_opt:
+ talloc_free(d_opt);
+fail:
+ return -1;
+}
+
+static const char *parse_host_addr(struct event *event)
+{
+ const char *val;
+
+ val = event_get_param(event, "tftp");
+ if (val)
+ return val;
+
+ val = event_get_param(event, "siaddr");
+ if (val)
+ return val;
+
+ val = event_get_param(event, "serverid");
+ if (val)
+ return val;
+
+ return NULL;
+}
+
+static char *parse_mac_addr(struct discover_context *ctx, const char *mac)
+{
+ unsigned int mac_addr_arr[MAC_ADDR_SIZE];
+ char *mac_addr;
+
+ sscanf(mac, "%X:%X:%X:%X:%X:%X", mac_addr_arr, mac_addr_arr + 1,
+ mac_addr_arr + 2, mac_addr_arr + 3, mac_addr_arr + 4,
+ mac_addr_arr + 5);
+
+ mac_addr = talloc_asprintf(ctx, "01-%02x-%02x-%02x-%02x-%02x-%02x",
+ mac_addr_arr[0], mac_addr_arr[1], mac_addr_arr[2],
+ mac_addr_arr[3], mac_addr_arr[4], mac_addr_arr[5]);
+
+ return mac_addr;
+}
+
+static char *parse_ip_addr(struct discover_context *ctx, const char *ip)
+{
+ unsigned int ip_addr_arr[IP_ADDR_SIZE];
+ char *ip_hex;
+
+ sscanf(ip, "%u.%u.%u.%u", ip_addr_arr, ip_addr_arr + 1,
+ ip_addr_arr + 2, ip_addr_arr + 3);
+
+ ip_hex = talloc_asprintf(ctx, "%02X%02X%02X%02X", ip_addr_arr[0],
+ ip_addr_arr[1], ip_addr_arr[2], ip_addr_arr[3]);
+
+ return ip_hex;
+}
+
+struct pb_url *user_event_parse_conf_url(struct discover_context *ctx,
+ struct event *event, bool *is_complete)
+{
+ const char *conffile, *pathprefix, *host, *bootfile;
+ 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");
+
+ /* 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
+ * further autodiscovery */
+ *is_complete = !!conffile;
+
+ /* if conffile is a URL, that's all we need */
+ if (conffile && is_url(conffile)) {
+ url = pb_url_parse(ctx, conffile);
+ return url;
+ }
+
+ /* If we can create a URL from pathprefix (optionally with
+ * conffile appended to create a complete URL), use that */
+ if (pathprefix && is_url(pathprefix)) {
+ if (conffile) {
+ url_str = talloc_asprintf(ctx, "%s%s",
+ pathprefix, conffile);
+ url = pb_url_parse(ctx, url_str);
+ talloc_free(url_str);
+ } else {
+ url = pb_url_parse(ctx, pathprefix);
+ }
+
+ return url;
+ }
+
+ host = parse_host_addr(event);
+ if (!host) {
+ pb_log("%s: host address not found\n", __func__);
+ return NULL;
+ }
+
+ url_str = talloc_asprintf(ctx, "tftp://%s/", host);
+
+ /* if we have a pathprefix, use that directly.. */
+ if (pathprefix) {
+ /* strip leading slashes */
+ while (pathprefix[0] == '/')
+ pathprefix++;
+ url_str = talloc_asprintf_append(url_str, "%s", pathprefix);
+
+ /* ... otherwise, add a path based on the bootfile name, but only
+ * if conffile isn't an absolute path itself */
+ } else if (bootfile && !(conffile && conffile[0] == '/')) {
+
+ basedir = talloc_strdup(ctx, bootfile);
+
+ /* strip filename from the bootfile path, leaving only a
+ * directory */
+ p = strrchr(basedir, '/');
+ if (!p)
+ p = basedir;
+ *p = '\0';
+
+ if (strlen(basedir))
+ url_str = talloc_asprintf_append(url_str, "%s/",
+ basedir);
+
+ talloc_free(basedir);
+ }
+
+ /* finally, append conffile */
+ if (conffile)
+ url_str = talloc_asprintf_append(url_str, "%s", conffile);
+
+ url = pb_url_parse(ctx, url_str);
+
+ talloc_free(url_str);
+
+ return url;
+}
+
+char **user_event_parse_conf_filenames(
+ struct discover_context *ctx, struct event *event)
+{
+ char *mac_addr, *ip_hex;
+ const char *mac, *ip;
+ char **filenames;
+ int index, len;
+
+ mac = event_get_param(event, "mac");
+ if (mac)
+ mac_addr = parse_mac_addr(ctx, mac);
+ else
+ mac_addr = NULL;
+
+ ip = event_get_param(event, "ip");
+ if (ip) {
+ ip_hex = parse_ip_addr(ctx, ip);
+ len = strlen(ip_hex);
+ } else {
+ ip_hex = NULL;
+ len = 0;
+ }
+
+ if (!mac_addr && !ip_hex) {
+ pb_log("%s: neither mac nor ip parameter found\n", __func__);
+ return NULL;
+ }
+
+ /* Filenames as fallback IP's + mac + default */
+ filenames = talloc_array(ctx, char *, len + 3);
+
+ index = 0;
+ if (mac_addr)
+ filenames[index++] = talloc_strdup(filenames, mac_addr);
+
+ while (len) {
+ filenames[index++] = talloc_strdup(filenames, ip_hex);
+ ip_hex[--len] = '\0';
+ }
+
+ filenames[index++] = talloc_strdup(filenames, "default");
+ filenames[index++] = NULL;
+
+ if (mac_addr)
+ talloc_free(mac_addr);
+
+ if (ip_hex)
+ talloc_free(ip_hex);
+
+ return filenames;
+}
+
+static int user_event_dhcp(struct user_event *uev, struct event *event)
+{
+ struct device_handler *handler = uev->handler;
+ struct discover_device *dev;
+
+ uint8_t hwaddr[MAC_ADDR_SIZE];
+
+ sscanf(event_get_param(event, "mac"),
+ "%hhX:%hhX:%hhX:%hhX:%hhX:%hhX",
+ hwaddr, hwaddr + 1, hwaddr + 2,
+ hwaddr + 3, hwaddr + 4, hwaddr + 5);
+
+ 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);
+
+ return 0;
+}
+
+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;
+
+ /* 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);
+
+ device_handler_discover_context_commit(handler, ctx);
+
+ talloc_free(ctx);
+
+ return 0;
+}
+
+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);
+
+ if (!dev)
+ return 0;
+
+ device_handler_remove(handler, dev);
+
+ return 0;
+}
+
+static int user_event_url(struct user_event *uev, struct event *event)
+{
+ struct device_handler *handler = uev->handler;
+ const char *url;
+
+ url = event_get_param(event, "url");
+ if (url)
+ device_handler_process_url(handler, url, NULL, NULL);
+
+ return 0;
+}
+
+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);
+
+ 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);
+
+ talloc_free(cmd);
+
+ return 0;
+}
+
+static int user_event_sync(struct user_event *uev, struct event *event)
+{
+ struct device_handler *handler = uev->handler;
+
+ if (strncasecmp(event->device, "all", strlen("all")) != 0)
+ device_sync_snapshots(handler, event->device);
+ else
+ device_sync_snapshots(handler, NULL);
+
+ 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,
return;
user_event_print_event(event);
- device_handler_event(uev->handler, event);
- talloc_free(event);
+ switch (event->action) {
+ case EVENT_ACTION_ADD:
+ result = user_event_add(uev, event);
+ break;
+ case EVENT_ACTION_REMOVE:
+ result = user_event_remove(uev, event);
+ break;
+ case EVENT_ACTION_URL:
+ result = user_event_url(uev, event);
+ goto out;
+ case EVENT_ACTION_DHCP:
+ result = user_event_dhcp(uev, event);
+ goto out;
+ 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:
+ break;
+ }
+
+ /* user_event_url() and user_event_dhcp() will steal the event context,
+ * but all others still need to free */
+ talloc_free(event);
+out:
return;
}
static int user_event_process(void *arg)
{
struct user_event *uev = arg;
- char buf[PBOOT_USER_EVENT_SIZE];
+ char buf[PBOOT_USER_EVENT_SIZE + 1];
int len;
- len = recvfrom(uev->socket, buf, sizeof(buf), 0, NULL, NULL);
+ 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));
return 0;
}
- pb_log("%s: %u bytes\n", __func__, len);
+ buf[len] = '\0';
+
+ pb_debug("%s: %u bytes\n", __func__, len);
user_event_handle_message(uev, buf, len);
{
struct user_event *uev = arg;
- pb_log("%s\n", __func__);
+ pb_debug("%s\n", __func__);
if (uev->socket >= 0)
close(uev->socket);
return 0;
}
-struct user_event *user_event_init(struct waitset *waitset,
- struct device_handler *handler)
+struct user_event *user_event_init(struct device_handler *handler,
+ struct waitset *waitset)
{
struct sockaddr_un addr;
struct user_event *uev;
unlink(PBOOT_USER_EVENT_SOCKET);
- uev = talloc(NULL, struct user_event);
+ uev = talloc(handler, struct user_event);
uev->handler = handler;
strerror(errno));
}
- waiter_register(waitset, uev->socket, WAIT_IN, user_event_process, uev);
+ waiter_register_io(waitset, uev->socket, WAIT_IN,
+ user_event_process, uev);
- pb_log("%s: waiting on %s\n", __func__, PBOOT_USER_EVENT_SOCKET);
+ pb_debug("%s: waiting on %s\n", __func__, PBOOT_USER_EVENT_SOCKET);
return uev;
talloc_free(uev);
return NULL;
}
-
-/**
- * user_event_trigger - Trigger known user events
- *
- * SIGUSR1 causes udhcpc to renew the current lease or obtain a new lease.
- */
-
-void user_event_trigger(struct user_event __attribute__((unused)) *uev)
-{
- /* FIXME: todo */
-}
-
-void user_event_destroy(struct user_event *uev)
-{
- talloc_free(uev);
-}
projects / petitboot / blobdiff