/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */ /* This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. * * Copyright (C) 2005 - 2010 Red Hat, Inc. * */ #include "nm-default.h" #include "nm-dhcp-client.h" #include #include #include #include #include #include #include #include #include #include "nm-utils/nm-dedup-multi.h" #include "NetworkManagerUtils.h" #include "nm-utils.h" #include "nm-dhcp-utils.h" #include "platform/nm-platform.h" #include "nm-dhcp-client-logging.h" /*****************************************************************************/ enum { SIGNAL_STATE_CHANGED, SIGNAL_PREFIX_DELEGATED, LAST_SIGNAL }; static guint signals[LAST_SIGNAL] = { 0 }; NM_GOBJECT_PROPERTIES_DEFINE_BASE ( PROP_MULTI_IDX, PROP_ADDR_FAMILY, PROP_IFACE, PROP_IFINDEX, PROP_HWADDR, PROP_UUID, PROP_ROUTE_TABLE, PROP_ROUTE_METRIC, PROP_TIMEOUT, ); typedef struct _NMDhcpClientPrivate { NMDedupMultiIndex *multi_idx; char * iface; GByteArray * hwaddr; char * uuid; GByteArray * duid; GBytes * client_id; char * hostname; pid_t pid; guint timeout_id; guint watch_id; int addr_family; int ifindex; guint32 route_table; guint32 route_metric; guint32 timeout; NMDhcpState state; bool info_only:1; bool use_fqdn:1; } NMDhcpClientPrivate; G_DEFINE_TYPE_EXTENDED (NMDhcpClient, nm_dhcp_client, G_TYPE_OBJECT, G_TYPE_FLAG_ABSTRACT, {}) #define NM_DHCP_CLIENT_GET_PRIVATE(self) _NM_GET_PRIVATE_PTR (self, NMDhcpClient, NM_IS_DHCP_CLIENT) /*****************************************************************************/ pid_t nm_dhcp_client_get_pid (NMDhcpClient *self) { g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), -1); return NM_DHCP_CLIENT_GET_PRIVATE (self)->pid; } NMDedupMultiIndex * nm_dhcp_client_get_multi_idx (NMDhcpClient *self) { g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), NULL); return NM_DHCP_CLIENT_GET_PRIVATE (self)->multi_idx; } const char * nm_dhcp_client_get_iface (NMDhcpClient *self) { g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), NULL); return NM_DHCP_CLIENT_GET_PRIVATE (self)->iface; } int nm_dhcp_client_get_ifindex (NMDhcpClient *self) { g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), -1); return NM_DHCP_CLIENT_GET_PRIVATE (self)->ifindex; } int nm_dhcp_client_get_addr_family (NMDhcpClient *self) { g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), AF_UNSPEC); return NM_DHCP_CLIENT_GET_PRIVATE (self)->addr_family; } const char * nm_dhcp_client_get_uuid (NMDhcpClient *self) { g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), NULL); return NM_DHCP_CLIENT_GET_PRIVATE (self)->uuid; } const GByteArray * nm_dhcp_client_get_duid (NMDhcpClient *self) { g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), NULL); return NM_DHCP_CLIENT_GET_PRIVATE (self)->duid; } const GByteArray * nm_dhcp_client_get_hw_addr (NMDhcpClient *self) { g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), NULL); return NM_DHCP_CLIENT_GET_PRIVATE (self)->hwaddr; } guint32 nm_dhcp_client_get_route_table (NMDhcpClient *self) { g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), RT_TABLE_MAIN); return NM_DHCP_CLIENT_GET_PRIVATE (self)->route_table; } guint32 nm_dhcp_client_get_route_metric (NMDhcpClient *self) { g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), G_MAXUINT32); return NM_DHCP_CLIENT_GET_PRIVATE (self)->route_metric; } guint32 nm_dhcp_client_get_timeout (NMDhcpClient *self) { g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), 0); return NM_DHCP_CLIENT_GET_PRIVATE (self)->timeout; } GBytes * nm_dhcp_client_get_client_id (NMDhcpClient *self) { g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), NULL); return NM_DHCP_CLIENT_GET_PRIVATE (self)->client_id; } void nm_dhcp_client_set_client_id (NMDhcpClient *self, GBytes *client_id) { NMDhcpClientPrivate *priv; g_return_if_fail (NM_IS_DHCP_CLIENT (self)); priv = NM_DHCP_CLIENT_GET_PRIVATE (self); if (priv->client_id && client_id && g_bytes_equal (priv->client_id, client_id)) return; g_clear_pointer (&priv->client_id, g_bytes_unref); priv->client_id = client_id ? g_bytes_ref (client_id) : NULL; } const char * nm_dhcp_client_get_hostname (NMDhcpClient *self) { g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), NULL); return NM_DHCP_CLIENT_GET_PRIVATE (self)->hostname; } gboolean nm_dhcp_client_get_use_fqdn (NMDhcpClient *self) { g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), FALSE); return NM_DHCP_CLIENT_GET_PRIVATE (self)->use_fqdn; } /*****************************************************************************/ static const char *state_table[NM_DHCP_STATE_MAX + 1] = { [NM_DHCP_STATE_UNKNOWN] = "unknown", [NM_DHCP_STATE_BOUND] = "bound", [NM_DHCP_STATE_TIMEOUT] = "timeout", [NM_DHCP_STATE_EXPIRE] = "expire", [NM_DHCP_STATE_DONE] = "done", [NM_DHCP_STATE_FAIL] = "fail", }; static const char * state_to_string (NMDhcpState state) { if ((gsize) state < G_N_ELEMENTS (state_table)) return state_table[state]; return NULL; } static NMDhcpState reason_to_state (NMDhcpClient *self, const char *iface, const char *reason) { if (g_ascii_strcasecmp (reason, "bound") == 0 || g_ascii_strcasecmp (reason, "bound6") == 0 || g_ascii_strcasecmp (reason, "renew") == 0 || g_ascii_strcasecmp (reason, "renew6") == 0 || g_ascii_strcasecmp (reason, "reboot") == 0 || g_ascii_strcasecmp (reason, "rebind") == 0 || g_ascii_strcasecmp (reason, "rebind6") == 0) return NM_DHCP_STATE_BOUND; else if (g_ascii_strcasecmp (reason, "timeout") == 0) return NM_DHCP_STATE_TIMEOUT; else if (g_ascii_strcasecmp (reason, "nak") == 0 || g_ascii_strcasecmp (reason, "expire") == 0 || g_ascii_strcasecmp (reason, "expire6") == 0) return NM_DHCP_STATE_EXPIRE; else if (g_ascii_strcasecmp (reason, "end") == 0) return NM_DHCP_STATE_DONE; else if (g_ascii_strcasecmp (reason, "fail") == 0 || g_ascii_strcasecmp (reason, "abend") == 0) return NM_DHCP_STATE_FAIL; _LOGD ("unmapped DHCP state '%s'", reason); return NM_DHCP_STATE_UNKNOWN; } /*****************************************************************************/ static void timeout_cleanup (NMDhcpClient *self) { NMDhcpClientPrivate *priv = NM_DHCP_CLIENT_GET_PRIVATE (self); nm_clear_g_source (&priv->timeout_id); } static void watch_cleanup (NMDhcpClient *self) { NMDhcpClientPrivate *priv = NM_DHCP_CLIENT_GET_PRIVATE (self); nm_clear_g_source (&priv->watch_id); } void nm_dhcp_client_stop_pid (pid_t pid, const char *iface) { char *name = iface ? g_strdup_printf ("dhcp-client-%s", iface) : NULL; g_return_if_fail (pid > 1); nm_utils_kill_child_sync (pid, SIGTERM, LOGD_DHCP, name ? name : "dhcp-client", NULL, 1000 / 2, 1000 / 20); g_free (name); } static void stop (NMDhcpClient *self, gboolean release, const GByteArray *duid) { NMDhcpClientPrivate *priv; g_return_if_fail (NM_IS_DHCP_CLIENT (self)); priv = NM_DHCP_CLIENT_GET_PRIVATE (self); if (priv->pid > 0) { /* Clean up the watch handler since we're explicitly killing the daemon */ watch_cleanup (self); nm_dhcp_client_stop_pid (priv->pid, priv->iface); } priv->pid = -1; priv->info_only = FALSE; } void nm_dhcp_client_set_state (NMDhcpClient *self, NMDhcpState new_state, GObject *ip_config, GHashTable *options) { NMDhcpClientPrivate *priv = NM_DHCP_CLIENT_GET_PRIVATE (self); gs_free char *event_id = NULL; if (new_state >= NM_DHCP_STATE_BOUND) timeout_cleanup (self); if (new_state >= NM_DHCP_STATE_TIMEOUT) watch_cleanup (self); if (new_state == NM_DHCP_STATE_BOUND) { g_assert ( (priv->addr_family == AF_INET && NM_IS_IP4_CONFIG (ip_config)) || (priv->addr_family == AF_INET6 && NM_IS_IP6_CONFIG (ip_config))); g_assert (options); } else { g_assert (ip_config == NULL); g_assert (options == NULL); } /* The client may send same-state transitions for RENEW/REBIND events and * the lease may have changed, so handle same-state transitions for the * BOUND state. Ignore same-state transitions for other events since * the lease won't have changed and the state was already handled. */ if ((priv->state == new_state) && (new_state != NM_DHCP_STATE_BOUND)) return; if ( priv->addr_family == AF_INET6 && new_state == NM_DHCP_STATE_BOUND) { char *start, *iaid; iaid = g_hash_table_lookup (options, "iaid"); start = g_hash_table_lookup (options, "life_starts"); if (iaid && start) event_id = g_strdup_printf ("%s|%s", iaid, start); } _LOGI ("state changed %s -> %s%s%s%s", state_to_string (priv->state), state_to_string (new_state), NM_PRINT_FMT_QUOTED (event_id, ", event ID=\"", event_id, "\"", "")); priv->state = new_state; g_signal_emit (G_OBJECT (self), signals[SIGNAL_STATE_CHANGED], 0, new_state, ip_config, options, event_id); } static gboolean transaction_timeout (gpointer user_data) { NMDhcpClient *self = NM_DHCP_CLIENT (user_data); NMDhcpClientPrivate *priv = NM_DHCP_CLIENT_GET_PRIVATE (self); priv->timeout_id = 0; _LOGW ("request timed out"); nm_dhcp_client_set_state (self, NM_DHCP_STATE_TIMEOUT, NULL, NULL); return G_SOURCE_REMOVE; } static void daemon_watch_cb (GPid pid, gint status, gpointer user_data) { NMDhcpClient *self = NM_DHCP_CLIENT (user_data); NMDhcpClientPrivate *priv = NM_DHCP_CLIENT_GET_PRIVATE (self); NMDhcpState new_state; g_return_if_fail (priv->watch_id); priv->watch_id = 0; if (WIFEXITED (status)) _LOGI ("client pid %d exited with status %d", pid, WEXITSTATUS (status)); else if (WIFSIGNALED (status)) _LOGI ("client pid %d killed by signal %d", pid, WTERMSIG (status)); else if (WIFSTOPPED(status)) _LOGI ("client pid %d stopped by signal %d", pid, WSTOPSIG (status)); else if (WIFCONTINUED (status)) _LOGI ("client pid %d resumed (by SIGCONT)", pid); else _LOGW ("client died abnormally"); if (!WIFEXITED (status)) new_state = NM_DHCP_STATE_FAIL; else new_state = NM_DHCP_STATE_DONE; priv->pid = -1; nm_dhcp_client_set_state (self, new_state, NULL, NULL); } void nm_dhcp_client_start_timeout (NMDhcpClient *self) { NMDhcpClientPrivate *priv = NM_DHCP_CLIENT_GET_PRIVATE (self); /* Set up a timeout on the transaction to kill it after the timeout */ g_assert (priv->timeout_id == 0); if (priv->timeout == NM_DHCP_TIMEOUT_INFINITY) return; priv->timeout_id = g_timeout_add_seconds (priv->timeout, transaction_timeout, self); } void nm_dhcp_client_watch_child (NMDhcpClient *self, pid_t pid) { NMDhcpClientPrivate *priv = NM_DHCP_CLIENT_GET_PRIVATE (self); g_return_if_fail (priv->pid == -1); priv->pid = pid; nm_dhcp_client_start_timeout (self); g_return_if_fail (priv->watch_id == 0); priv->watch_id = g_child_watch_add (pid, daemon_watch_cb, self); } gboolean nm_dhcp_client_start_ip4 (NMDhcpClient *self, const char *dhcp_client_id, const char *dhcp_anycast_addr, const char *hostname, gboolean use_fqdn, const char *last_ip4_address) { NMDhcpClientPrivate *priv; gs_unref_bytes GBytes *tmp = NULL; g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), FALSE); priv = NM_DHCP_CLIENT_GET_PRIVATE (self); g_return_val_if_fail (priv->pid == -1, FALSE); g_return_val_if_fail (priv->addr_family == AF_INET, FALSE); g_return_val_if_fail (priv->uuid != NULL, FALSE); if (priv->timeout == NM_DHCP_TIMEOUT_INFINITY) _LOGI ("activation: beginning transaction (no timeout)"); else _LOGI ("activation: beginning transaction (timeout in %u seconds)", (guint) priv->timeout); if (dhcp_client_id) tmp = nm_dhcp_utils_client_id_string_to_bytes (dhcp_client_id); nm_dhcp_client_set_client_id (self, tmp); g_clear_pointer (&priv->hostname, g_free); priv->hostname = g_strdup (hostname); priv->use_fqdn = use_fqdn; return NM_DHCP_CLIENT_GET_CLASS (self)->ip4_start (self, dhcp_anycast_addr, last_ip4_address); } static GByteArray * generate_duid_from_machine_id (void) { GByteArray *duid; GChecksum *sum; guint8 buffer[32]; /* SHA256 digest size */ gsize sumlen = sizeof (buffer); const guint16 duid_type = g_htons (4); uuid_t uuid; GRand *generator; guint i; gs_free char *machine_id_s = NULL; gs_free char *str = NULL; machine_id_s = nm_utils_machine_id_read (); if (nm_utils_machine_id_parse (machine_id_s, uuid)) { /* Hash the machine ID so it's not leaked to the network */ sum = g_checksum_new (G_CHECKSUM_SHA256); g_checksum_update (sum, (const guchar *) &uuid, sizeof (uuid)); g_checksum_get_digest (sum, buffer, &sumlen); g_checksum_free (sum); } else { nm_log_warn (LOGD_DHCP, "dhcp: failed to read " SYSCONFDIR "/machine-id " "or " LOCALSTATEDIR "/lib/dbus/machine-id to generate " "DHCPv6 DUID; creating non-persistent random DUID."); generator = g_rand_new (); for (i = 0; i < sizeof (buffer) / sizeof (guint32); i++) ((guint32 *) buffer)[i] = g_rand_int (generator); g_rand_free (generator); } /* Generate a DHCP Unique Identifier for DHCPv6 using the * DUID-UUID method (see RFC 6355 section 4). Format is: * * u16: type (DUID-UUID = 4) * u8[16]: UUID bytes */ duid = g_byte_array_sized_new (18); g_byte_array_append (duid, (guint8 *) &duid_type, sizeof (duid_type)); /* Since SHA256 is 256 bits, but UUID is 128 bits, we just take the first * 128 bits of the SHA256 as the DUID-UUID. */ g_byte_array_append (duid, buffer, 16); nm_log_dbg (LOGD_DHCP, "dhcp: generated DUID %s", (str = nm_dhcp_utils_duid_to_string (duid))); return duid; } static GByteArray * get_duid (NMDhcpClient *self) { static GByteArray *duid = NULL; GByteArray *copy = NULL; if (G_UNLIKELY (duid == NULL)) { duid = generate_duid_from_machine_id (); g_assert (duid); } if (G_LIKELY (duid)) { copy = g_byte_array_sized_new (duid->len); g_byte_array_append (copy, duid->data, duid->len); } return copy; } gboolean nm_dhcp_client_start_ip6 (NMDhcpClient *self, const char *dhcp_anycast_addr, const struct in6_addr *ll_addr, const char *hostname, gboolean info_only, NMSettingIP6ConfigPrivacy privacy, guint needed_prefixes) { NMDhcpClientPrivate *priv; gs_free char *str = NULL; g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), FALSE); priv = NM_DHCP_CLIENT_GET_PRIVATE (self); g_return_val_if_fail (priv->pid == -1, FALSE); g_return_val_if_fail (priv->addr_family == AF_INET6, FALSE); g_return_val_if_fail (priv->uuid != NULL, FALSE); /* If we don't have one yet, read the default DUID for this DHCPv6 client * from the client-specific persistent configuration. */ if (!priv->duid) priv->duid = NM_DHCP_CLIENT_GET_CLASS (self)->get_duid (self); _LOGD ("DUID is '%s'", (str = nm_dhcp_utils_duid_to_string (priv->duid))); g_clear_pointer (&priv->hostname, g_free); priv->hostname = g_strdup (hostname); priv->info_only = info_only; if (priv->timeout == NM_DHCP_TIMEOUT_INFINITY) _LOGI ("activation: beginning transaction (no timeout)"); else _LOGI ("activation: beginning transaction (timeout in %u seconds)", (guint) priv->timeout); return NM_DHCP_CLIENT_GET_CLASS (self)->ip6_start (self, dhcp_anycast_addr, ll_addr, info_only, privacy, priv->duid, needed_prefixes); } void nm_dhcp_client_stop_existing (const char *pid_file, const char *binary_name) { guint64 start_time; pid_t pid, ppid; const char *exe; char proc_path[NM_STRLEN ("/proc/%lu/cmdline") + 100]; gs_free char *pid_contents = NULL, *proc_contents = NULL; /* Check for an existing instance and stop it */ if (!g_file_get_contents (pid_file, &pid_contents, NULL, NULL)) return; pid = _nm_utils_ascii_str_to_int64 (pid_contents, 10, 1, G_MAXINT64, 0); if (pid <= 0) goto out; start_time = nm_utils_get_start_time_for_pid (pid, NULL, &ppid); if (start_time == 0) goto out; nm_sprintf_buf (proc_path, "/proc/%lu/cmdline", (unsigned long) pid); if (!g_file_get_contents (proc_path, &proc_contents, NULL, NULL)) goto out; exe = strrchr (proc_contents, '/'); if (exe) exe++; else exe = proc_contents; if (!nm_streq0 (exe, binary_name)) goto out; if (ppid == getpid ()) { /* the process is our own child. */ nm_utils_kill_child_sync (pid, SIGTERM, LOGD_DHCP, "dhcp-client", NULL, 1000 / 2, 1000 / 20); } else { nm_utils_kill_process_sync (pid, start_time, SIGTERM, LOGD_DHCP, "dhcp-client", 1000 / 2, 1000 / 20, 2000); } out: if (remove (pid_file) == -1) { nm_log_dbg (LOGD_DHCP, "dhcp: could not remove pid file \"%s\": %d (%s)", pid_file, errno, g_strerror (errno)); } } void nm_dhcp_client_stop (NMDhcpClient *self, gboolean release) { NMDhcpClientPrivate *priv; pid_t old_pid = 0; g_return_if_fail (NM_IS_DHCP_CLIENT (self)); priv = NM_DHCP_CLIENT_GET_PRIVATE (self); /* Kill the DHCP client */ old_pid = priv->pid; NM_DHCP_CLIENT_GET_CLASS (self)->stop (self, release, priv->duid); if (old_pid > 0) _LOGI ("canceled DHCP transaction, DHCP client pid %d", old_pid); else _LOGI ("canceled DHCP transaction"); g_assert (priv->pid == -1); nm_dhcp_client_set_state (self, NM_DHCP_STATE_DONE, NULL, NULL); } /*****************************************************************************/ static char * bytearray_variant_to_string (NMDhcpClient *self, GVariant *value, const char *key) { const guint8 *array; gsize length; GString *str; int i; unsigned char c; char *converted = NULL; g_return_val_if_fail (value != NULL, NULL); array = g_variant_get_fixed_array (value, &length, 1); /* Since the DHCP options come through environment variables, they should * already be UTF-8 safe, but just make sure. */ str = g_string_sized_new (length); for (i = 0; i < length; i++) { c = array[i]; /* Convert NULLs to spaces and non-ASCII characters to ? */ if (c == '\0') c = ' '; else if (c > 127) c = '?'; str = g_string_append_c (str, c); } str = g_string_append_c (str, '\0'); converted = str->str; if (!g_utf8_validate (converted, -1, NULL)) _LOGW ("option '%s' couldn't be converted to UTF-8", key); g_string_free (str, FALSE); return converted; } #define OLD_TAG "old_" #define NEW_TAG "new_" static void maybe_add_option (NMDhcpClient *self, GHashTable *hash, const char *key, GVariant *value) { char *str_value = NULL; const char **p; static const char *ignored_keys[] = { "interface", "pid", "reason", "dhcp_message_type", NULL }; g_return_if_fail (g_variant_is_of_type (value, G_VARIANT_TYPE_BYTESTRING)); if (g_str_has_prefix (key, OLD_TAG)) return; /* Filter out stuff that's not actually new DHCP options */ for (p = ignored_keys; *p; p++) { if (!strcmp (*p, key)) return; } if (g_str_has_prefix (key, NEW_TAG)) key += NM_STRLEN (NEW_TAG); if (!key[0]) return; str_value = bytearray_variant_to_string (self, value, key); if (str_value) g_hash_table_insert (hash, g_strdup (key), str_value); } gboolean nm_dhcp_client_handle_event (gpointer unused, const char *iface, gint pid, GVariant *options, const char *reason, NMDhcpClient *self) { NMDhcpClientPrivate *priv; guint32 old_state; guint32 new_state; GHashTable *str_options = NULL; GObject *ip_config = NULL; NMPlatformIP6Address prefix = { 0, }; g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), FALSE); g_return_val_if_fail (iface != NULL, FALSE); g_return_val_if_fail (pid > 0, FALSE); g_return_val_if_fail (g_variant_is_of_type (options, G_VARIANT_TYPE_VARDICT), FALSE); g_return_val_if_fail (reason != NULL, FALSE); priv = NM_DHCP_CLIENT_GET_PRIVATE (self); if (g_strcmp0 (priv->iface, iface) != 0) return FALSE; if (priv->pid != pid) return FALSE; old_state = priv->state; new_state = reason_to_state (self, priv->iface, reason); _LOGD ("DHCP reason '%s' -> state '%s'", reason, state_to_string (new_state)); if (new_state == NM_DHCP_STATE_BOUND) { GVariantIter iter; const char *name; GVariant *value; /* Copy options */ str_options = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free); g_variant_iter_init (&iter, options); while (g_variant_iter_next (&iter, "{&sv}", &name, &value)) { maybe_add_option (self, str_options, name, value); g_variant_unref (value); } if (nm_logging_enabled (LOGL_DEBUG, LOGD_DHCP6)) { GHashTableIter hash_iter; gpointer key, val; g_hash_table_iter_init (&hash_iter, str_options); while (g_hash_table_iter_next (&hash_iter, &key, &val)) _LOGD ("option '%s'=>'%s'", (const char *) key, (const char *) val); } /* Create the IP config */ g_warn_if_fail (g_hash_table_size (str_options)); if (g_hash_table_size (str_options)) { if (priv->addr_family == AF_INET) { ip_config = (GObject *) nm_dhcp_utils_ip4_config_from_options (nm_dhcp_client_get_multi_idx (self), priv->ifindex, priv->iface, str_options, priv->route_table, priv->route_metric); } else { prefix = nm_dhcp_utils_ip6_prefix_from_options (str_options); ip_config = (GObject *) nm_dhcp_utils_ip6_config_from_options (nm_dhcp_client_get_multi_idx (self), priv->ifindex, priv->iface, str_options, priv->info_only); } } } if (!IN6_IS_ADDR_UNSPECIFIED (&prefix.address)) { /* If we got an IPv6 prefix to delegate, we don't change the state * of the DHCP client instance. Instead, we just signal the prefix * to the device. */ g_signal_emit (G_OBJECT (self), signals[SIGNAL_PREFIX_DELEGATED], 0, &prefix); } else { /* Fail if no valid IP config was received */ if (new_state == NM_DHCP_STATE_BOUND && ip_config == NULL) { _LOGW ("client bound but IP config not received"); new_state = NM_DHCP_STATE_FAIL; g_clear_pointer (&str_options, g_hash_table_unref); } nm_dhcp_client_set_state (self, new_state, ip_config, str_options); } if (str_options) g_hash_table_destroy (str_options); g_clear_object (&ip_config); return TRUE; } /*****************************************************************************/ static void get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { NMDhcpClientPrivate *priv = NM_DHCP_CLIENT_GET_PRIVATE ((NMDhcpClient *) object); switch (prop_id) { case PROP_IFACE: g_value_set_string (value, priv->iface); break; case PROP_IFINDEX: g_value_set_int (value, priv->ifindex); break; case PROP_HWADDR: g_value_set_boxed (value, priv->hwaddr); break; case PROP_ADDR_FAMILY: g_value_set_int (value, priv->addr_family); break; case PROP_UUID: g_value_set_string (value, priv->uuid); break; case PROP_ROUTE_METRIC: g_value_set_uint (value, priv->route_metric); break; case PROP_TIMEOUT: g_value_set_uint (value, priv->timeout); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { NMDhcpClientPrivate *priv = NM_DHCP_CLIENT_GET_PRIVATE ((NMDhcpClient *) object); switch (prop_id) { case PROP_MULTI_IDX: /* construct-only */ priv->multi_idx = g_value_get_pointer (value); if (!priv->multi_idx) g_return_if_reached (); nm_dedup_multi_index_ref (priv->multi_idx); break; case PROP_IFACE: /* construct-only */ priv->iface = g_value_dup_string (value); break; case PROP_IFINDEX: /* construct-only */ priv->ifindex = g_value_get_int (value); g_warn_if_fail (priv->ifindex > 0); break; case PROP_HWADDR: /* construct-only */ priv->hwaddr = g_value_dup_boxed (value); break; case PROP_ADDR_FAMILY: /* construct-only */ priv->addr_family = g_value_get_int (value); if (!NM_IN_SET (priv->addr_family, AF_INET, AF_INET6)) g_return_if_reached (); break; case PROP_UUID: /* construct-only */ priv->uuid = g_value_dup_string (value); break; case PROP_ROUTE_TABLE: /* construct-only */ priv->route_table = g_value_get_uint (value); break; case PROP_ROUTE_METRIC: /* construct-only */ priv->route_metric = g_value_get_uint (value); break; case PROP_TIMEOUT: /* construct-only */ priv->timeout = g_value_get_uint (value); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } /*****************************************************************************/ static void nm_dhcp_client_init (NMDhcpClient *self) { NMDhcpClientPrivate *priv; priv = G_TYPE_INSTANCE_GET_PRIVATE (self, NM_TYPE_DHCP_CLIENT, NMDhcpClientPrivate); self->_priv = priv; priv->pid = -1; } static void dispose (GObject *object) { NMDhcpClient *self = NM_DHCP_CLIENT (object); NMDhcpClientPrivate *priv = NM_DHCP_CLIENT_GET_PRIVATE (self); /* Stopping the client is left up to the controlling device * explicitly since we may want to quit NetworkManager but not terminate * the DHCP client. */ watch_cleanup (self); timeout_cleanup (self); g_clear_pointer (&priv->iface, g_free); g_clear_pointer (&priv->hostname, g_free); g_clear_pointer (&priv->uuid, g_free); g_clear_pointer (&priv->client_id, g_bytes_unref); if (priv->hwaddr) { g_byte_array_free (priv->hwaddr, TRUE); priv->hwaddr = NULL; } if (priv->duid) { g_byte_array_free (priv->duid, TRUE); priv->duid = NULL; } G_OBJECT_CLASS (nm_dhcp_client_parent_class)->dispose (object); priv->multi_idx = nm_dedup_multi_index_unref (priv->multi_idx); } static void nm_dhcp_client_class_init (NMDhcpClientClass *client_class) { GObjectClass *object_class = G_OBJECT_CLASS (client_class); g_type_class_add_private (client_class, sizeof (NMDhcpClientPrivate)); object_class->dispose = dispose; object_class->get_property = get_property; object_class->set_property = set_property; client_class->stop = stop; client_class->get_duid = get_duid; obj_properties[PROP_MULTI_IDX] = g_param_spec_pointer (NM_DHCP_CLIENT_MULTI_IDX, "", "", G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS); obj_properties[PROP_IFACE] = g_param_spec_string (NM_DHCP_CLIENT_INTERFACE, "", "", NULL, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS); obj_properties[PROP_IFINDEX] = g_param_spec_int (NM_DHCP_CLIENT_IFINDEX, "", "", -1, G_MAXINT, -1, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS); obj_properties[PROP_HWADDR] = g_param_spec_boxed (NM_DHCP_CLIENT_HWADDR, "", "", G_TYPE_BYTE_ARRAY, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS); obj_properties[PROP_ADDR_FAMILY] = g_param_spec_int (NM_DHCP_CLIENT_ADDR_FAMILY, "", "", 0, G_MAXINT, AF_UNSPEC, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS); obj_properties[PROP_UUID] = g_param_spec_string (NM_DHCP_CLIENT_UUID, "", "", NULL, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS); obj_properties[PROP_ROUTE_TABLE] = g_param_spec_uint (NM_DHCP_CLIENT_ROUTE_TABLE, "", "", 0, G_MAXUINT32, RT_TABLE_MAIN, G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS); obj_properties[PROP_ROUTE_METRIC] = g_param_spec_uint (NM_DHCP_CLIENT_ROUTE_METRIC, "", "", 0, G_MAXUINT32, 0, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS); obj_properties[PROP_TIMEOUT] = g_param_spec_uint (NM_DHCP_CLIENT_TIMEOUT, "", "", 1, G_MAXINT32, NM_DHCP_TIMEOUT_DEFAULT, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS); g_object_class_install_properties (object_class, _PROPERTY_ENUMS_LAST, obj_properties); signals[SIGNAL_STATE_CHANGED] = g_signal_new (NM_DHCP_CLIENT_SIGNAL_STATE_CHANGED, G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (NMDhcpClientClass, state_changed), NULL, NULL, NULL, G_TYPE_NONE, 4, G_TYPE_UINT, G_TYPE_OBJECT, G_TYPE_HASH_TABLE, G_TYPE_STRING); signals[SIGNAL_PREFIX_DELEGATED] = g_signal_new (NM_DHCP_CLIENT_SIGNAL_PREFIX_DELEGATED, G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (NMDhcpClientClass, state_changed), NULL, NULL, NULL, G_TYPE_NONE, 1, G_TYPE_POINTER); }