diff options
Diffstat (limited to 'src/core/dhcp')
| -rw-r--r-- | src/core/dhcp/nm-dhcp-client.c | 117 | ||||
| -rw-r--r-- | src/core/dhcp/nm-dhcp-client.h | 17 | ||||
| -rw-r--r-- | src/core/dhcp/nm-dhcp-dhclient-utils.c | 91 | ||||
| -rw-r--r-- | src/core/dhcp/nm-dhcp-dhclient-utils.h | 5 | ||||
| -rw-r--r-- | src/core/dhcp/nm-dhcp-dhclient.c | 39 | ||||
| -rw-r--r-- | src/core/dhcp/nm-dhcp-nettools.c | 17 | ||||
| -rw-r--r-- | src/core/dhcp/nm-dhcp-options.c | 8 | ||||
| -rw-r--r-- | src/core/dhcp/nm-dhcp-options.h | 9 | ||||
| -rw-r--r-- | src/core/dhcp/nm-dhcp-systemd.c | 6 | ||||
| -rw-r--r-- | src/core/dhcp/tests/test-dhcp-dhclient.c | 248 |
10 files changed, 354 insertions, 203 deletions
diff --git a/src/core/dhcp/nm-dhcp-client.c b/src/core/dhcp/nm-dhcp-client.c index 1329b953..805b42d2 100644 --- a/src/core/dhcp/nm-dhcp-client.c +++ b/src/core/dhcp/nm-dhcp-client.c @@ -237,30 +237,65 @@ nm_dhcp_client_create_l3cd(NMDhcpClient *self) NM_IP_CONFIG_SOURCE_DHCP); } +GHashTable * +nm_dhcp_client_create_options_dict(NMDhcpClient *self, gboolean static_keys) +{ + NMDhcpClientPrivate *priv = NM_DHCP_CLIENT_GET_PRIVATE(self); + GHashTable *options; + GBytes *effective_client_id; + + options = nm_dhcp_option_create_options_dict(static_keys); + + effective_client_id = nm_dhcp_client_get_effective_client_id(self); + if (effective_client_id) { + guint option = NM_IS_IPv4(priv->config.addr_family) ? NM_DHCP_OPTION_DHCP4_CLIENT_ID + : NM_DHCP_OPTION_DHCP6_CLIENT_ID; + gs_free char *str = nm_dhcp_utils_duid_to_string(effective_client_id); + + /* Note that for the nm-dhcp-helper based plugins (dhclient), the plugin + * may send the used client-id/DUID via the environment variables and + * overwrite them yet again. */ + + if (static_keys) { + nm_dhcp_option_add_option(options, priv->config.addr_family, option, str); + } else { + g_hash_table_insert( + options, + g_strdup(nm_dhcp_option_request_string(priv->config.addr_family, option)), + g_steal_pointer(&str)); + } + } + + return options; +} + /*****************************************************************************/ -void +gboolean nm_dhcp_client_set_effective_client_id(NMDhcpClient *self, GBytes *client_id) { - NMDhcpClientPrivate *priv = NM_DHCP_CLIENT_GET_PRIVATE(self); - gs_free char *tmp_str = NULL; + NMDhcpClientPrivate *priv = NM_DHCP_CLIENT_GET_PRIVATE(self); + gs_free char *tmp_str = NULL; + gs_unref_bytes GBytes *client_id_to_free = NULL; - g_return_if_fail(NM_IS_DHCP_CLIENT(self)); - g_return_if_fail(!client_id || g_bytes_get_size(client_id) >= 2); + g_return_val_if_fail(NM_IS_DHCP_CLIENT(self), FALSE); + g_return_val_if_fail(!client_id || g_bytes_get_size(client_id) >= 2, FALSE); priv = NM_DHCP_CLIENT_GET_PRIVATE(self); if (nm_g_bytes_equal0(priv->effective_client_id, client_id)) - return; + return FALSE; - g_bytes_unref(priv->effective_client_id); + client_id_to_free = g_steal_pointer(&priv->effective_client_id); priv->effective_client_id = nm_g_bytes_ref(client_id); - _LOGT("%s: set %s", + _LOGT("%s: set effective %s", priv->config.addr_family == AF_INET6 ? "duid" : "client-id", priv->effective_client_id ? (tmp_str = nm_dhcp_utils_duid_to_string(priv->effective_client_id)) : "default"); + + return TRUE; } /*****************************************************************************/ @@ -967,12 +1002,6 @@ _dhcp_client_decline(NMDhcpClient *self, return klass->decline(self, l3cd, error_message, error); } -static GBytes * -get_duid(NMDhcpClient *self) -{ - return NULL; -} - static gboolean ipv6_lladdr_timeout(gpointer user_data) { @@ -1302,8 +1331,7 @@ gboolean nm_dhcp_client_start(NMDhcpClient *self, GError **error) { NMDhcpClientPrivate *priv; - gs_unref_bytes GBytes *own_client_id = NULL; - const NMPlatformIP6Address *addr = NULL; + const NMPlatformIP6Address *addr = NULL; int IS_IPv4; g_return_val_if_fail(NM_IS_DHCP_CLIENT(self), FALSE); @@ -1317,11 +1345,6 @@ nm_dhcp_client_start(NMDhcpClient *self, GError **error) IS_IPv4 = NM_IS_IPv4(priv->config.addr_family); if (!IS_IPv4) { - if (!priv->config.v6.enforce_duid) - own_client_id = NM_DHCP_CLIENT_GET_CLASS(self)->get_duid(self); - - nm_dhcp_client_set_effective_client_id(self, own_client_id ?: priv->config.client_id); - addr = ipv6_lladdr_find(self); if (!addr) { _LOGD("waiting for IPv6LL address"); @@ -1449,7 +1472,7 @@ nm_dhcp_client_stop(NMDhcpClient *self, gboolean release) /*****************************************************************************/ static char * -bytearray_variant_to_string(NMDhcpClient *self, GVariant *value, const char *key) +bytearray_variant_to_string(GVariant *value) { const guint8 *array; char *str; @@ -1499,8 +1522,9 @@ label_is_unknown_xyz(const char *label) static void maybe_add_option(NMDhcpClient *self, GHashTable *hash, const char *key, GVariant *value) { - char *str_value; - int priv_opt_num; + const int IS_IPv4 = NM_IS_IPv4(NM_DHCP_CLIENT_GET_PRIVATE(self)->config.addr_family); + char *str_value; + int priv_opt_num; if (!g_variant_is_of_type(value, G_VARIANT_TYPE_BYTESTRING)) return; @@ -1517,27 +1541,49 @@ maybe_add_option(NMDhcpClient *self, GHashTable *hash, const char *key, GVariant if (NM_STR_HAS_PREFIX(key, "private_") || !key[0]) return; - str_value = bytearray_variant_to_string(self, value, key); + str_value = bytearray_variant_to_string(value); if (!str_value) return; + if ((IS_IPv4 && nm_streq(key, "dhcp_client_identifier")) + || (!IS_IPv4 && nm_streq(key, "dhcp6_client_id"))) { + gs_free char *str = g_steal_pointer(&str_value); + gs_unref_bytes GBytes *bytes = NULL; + + /* Validate and normalize the client-id/DUID. */ + + bytes = nm_utils_hexstr2bin(str); + if (!bytes || g_bytes_get_size(bytes) < 2) { + /* Seems invalid. Ignore */ + return; + } + + if (!nm_dhcp_client_set_effective_client_id(self, bytes)) { + /* the client-id is identical and we already set it. Nothing to do. */ + return; + } + + /* The effective-client-id was (re)set. Update "hash" with the new value... */ + str_value = nm_dhcp_utils_duid_to_string(bytes); + } + g_hash_table_insert(hash, g_strdup(key), str_value); /* dhclient has no special labels for private dhcp options: it uses "unknown_xyz" - * labels for that. We need to identify those to alias them to our "private_xyz" - * format unused in the internal dchp plugins. - */ + * labels for that. We need to identify those to alias them to our "private_xyz" + * format unused in the internal dchp plugins. + */ if ((priv_opt_num = label_is_unknown_xyz(key)) > 0) { gs_free guint8 *check_val = NULL; char *hex_str = NULL; gsize len; /* dhclient passes values from dhcp private options in its own "string" format: - * if the raw values are printable as ascii strings, it will pass the string - * representation; if the values are not printable as an ascii string, it will - * pass a string displaying the hex values (hex string). Try to enforce passing - * always an hex string, converting string representation if needed. - */ + * if the raw values are printable as ascii strings, it will pass the string + * representation; if the values are not printable as an ascii string, it will + * pass a string displaying the hex values (hex string). Try to enforce passing + * always an hex string, converting string representation if needed. + */ check_val = nm_utils_hexstr2bin_alloc(str_value, FALSE, TRUE, ":", 0, &len); hex_str = nm_utils_bin2hexstr_full(check_val ?: (guint8 *) str_value, check_val ? len : strlen(str_value), @@ -1623,7 +1669,7 @@ nm_dhcp_client_handle_event(gpointer unused, GVariant *value; /* Copy options */ - str_options = g_hash_table_new_full(nm_str_hash, g_str_equal, g_free, g_free); + str_options = nm_dhcp_client_create_options_dict(self, FALSE); g_variant_iter_init(&iter, options); while (g_variant_iter_next(&iter, "{&sv}", &name, &value)) { maybe_add_option(self, str_options, name, value); @@ -1914,8 +1960,7 @@ nm_dhcp_client_class_init(NMDhcpClientClass *client_class) client_class->accept = _accept; client_class->decline = decline; - client_class->stop = stop; - client_class->get_duid = get_duid; + client_class->stop = stop; obj_properties[PROP_CONFIG] = g_param_spec_pointer(NM_DHCP_CLIENT_CONFIG, diff --git a/src/core/dhcp/nm-dhcp-client.h b/src/core/dhcp/nm-dhcp-client.h index 51c6bc04..6f403b61 100644 --- a/src/core/dhcp/nm-dhcp-client.h +++ b/src/core/dhcp/nm-dhcp-client.h @@ -214,17 +214,6 @@ typedef struct { gboolean (*ip6_start)(NMDhcpClient *self, const struct in6_addr *ll_addr, GError **error); void (*stop)(NMDhcpClient *self, gboolean release); - - /** - * get_duid: - * @self: the #NMDhcpClient - * - * Attempts to find an existing DHCPv6 DUID for this client in the DHCP - * client's persistent configuration. Returned DUID should be the binary - * representation of the DUID. If no DUID is found, %NULL should be - * returned. - */ - GBytes *(*get_duid)(NMDhcpClient *self); } NMDhcpClientClass; GType nm_dhcp_client_get_type(void); @@ -285,11 +274,13 @@ const char *nm_dhcp_client_get_iface(NMDhcpClient *self); NMDedupMultiIndex *nm_dhcp_client_get_multi_idx(NMDhcpClient *self); int nm_dhcp_client_get_ifindex(NMDhcpClient *self); -void nm_dhcp_client_set_effective_client_id(NMDhcpClient *self, GBytes *client_id); -GBytes *nm_dhcp_client_get_effective_client_id(NMDhcpClient *self); +gboolean nm_dhcp_client_set_effective_client_id(NMDhcpClient *self, GBytes *client_id); +GBytes *nm_dhcp_client_get_effective_client_id(NMDhcpClient *self); NML3ConfigData *nm_dhcp_client_create_l3cd(NMDhcpClient *self); +GHashTable *nm_dhcp_client_create_options_dict(NMDhcpClient *self, gboolean static_keys); + /***************************************************************************** * Client data *****************************************************************************/ diff --git a/src/core/dhcp/nm-dhcp-dhclient-utils.c b/src/core/dhcp/nm-dhcp-dhclient-utils.c index 74e6b905..ea8943fa 100644 --- a/src/core/dhcp/nm-dhcp-dhclient-utils.c +++ b/src/core/dhcp/nm-dhcp-dhclient-utils.c @@ -399,6 +399,7 @@ nm_dhcp_dhclient_create_config(const char *interface, if (out_new_client_id) nm_clear_pointer(out_new_client_id, g_bytes_unref); NM_SET_OUT(out_new_client_id, read_client_id(p)); + /* fall-through. We keep the line... */ } /* Override config file hostname and use one from the connection */ @@ -523,6 +524,20 @@ nm_dhcp_dhclient_create_config(const char *interface, return g_string_free(g_steal_pointer(&new_contents), FALSE); } +/* In the lease file, dhclient will write "option dhcp6.client-id $HEXSTR". This + * function does the same. */ +static char * +nm_dhcp_dhclient_escape_duid_as_hex(GBytes *duid) +{ + const guint8 *s; + gsize len; + + nm_assert(duid); + + s = g_bytes_get_data(duid, &len); + return nm_utils_bin2hexstr_fuller(s, len, ':', FALSE, FALSE, NULL); +} + /* Roughly follow what dhclient's quotify_buf() and pretty_escape() functions do */ char * nm_dhcp_dhclient_escape_duid(GBytes *duid) @@ -605,7 +620,7 @@ error: return NULL; } -#define DUID_PREFIX "default-duid \"" +#define DEFAULT_DUID_PREFIX "default-duid \"" /* Beware: @error may be unset even if the function returns %NULL. */ GBytes * @@ -626,10 +641,10 @@ nm_dhcp_dhclient_read_duid(const char *leasefile, GError **error) const char *p = nm_str_skip_leading_spaces(contents_v[i]); GBytes *duid; - if (!NM_STR_HAS_PREFIX(p, DUID_PREFIX)) + if (!NM_STR_HAS_PREFIX(p, DEFAULT_DUID_PREFIX)) continue; - p += NM_STRLEN(DUID_PREFIX); + p += NM_STRLEN(DEFAULT_DUID_PREFIX); g_strchomp((char *) p); @@ -647,15 +662,21 @@ nm_dhcp_dhclient_read_duid(const char *leasefile, GError **error) } gboolean -nm_dhcp_dhclient_save_duid(const char *leasefile, GBytes *duid, GError **error) +nm_dhcp_dhclient_save_duid(const char *leasefile, + GBytes *duid, + gboolean enforce_duid, + GError **error) { gs_free char *escaped_duid = NULL; gs_free const char **lines = NULL; nm_auto_free_gstring GString *s = NULL; const char *const *iter; - gsize len = 0; + gs_free char *conflicting_duid_line = NULL; + gs_free char *contents = NULL; + gsize contents_len = 0; g_return_val_if_fail(leasefile != NULL, FALSE); + if (!duid) { nm_utils_error_set_literal(error, NM_UTILS_ERROR_UNKNOWN, "missing duid"); g_return_val_if_reached(FALSE); @@ -665,48 +686,68 @@ nm_dhcp_dhclient_save_duid(const char *leasefile, GBytes *duid, GError **error) nm_assert(escaped_duid); if (g_file_test(leasefile, G_FILE_TEST_EXISTS)) { - gs_free char *contents = NULL; - - if (!g_file_get_contents(leasefile, &contents, &len, error)) { + if (!g_file_get_contents(leasefile, &contents, &contents_len, error)) { g_prefix_error(error, "failed to read lease file %s: ", leasefile); return FALSE; } - lines = nm_strsplit_set_with_empty(contents, "\n\r"); + lines = nm_strsplit_set_with_empty(contents, "\n"); } - s = g_string_sized_new(len + 50); - g_string_append_printf(s, DUID_PREFIX "%s\";\n", escaped_duid); + s = g_string_sized_new(contents_len + 50); + g_string_append_printf(s, DEFAULT_DUID_PREFIX "%s\";\n", escaped_duid); /* Preserve existing leasefile contents */ if (lines) { for (iter = lines; *iter; iter++) { const char *str = *iter; const char *l; + gboolean ends_with_r; + gsize l_len; + gsize prefix_len; - /* If we find an uncommented DUID in the file, check if - * equal to the one we are going to write: if so, no need - * to update the lease file, otherwise skip the old DUID. - */ - l = nm_str_skip_leading_spaces(str); - if (g_str_has_prefix(l, DUID_PREFIX)) { - gs_strfreev char **split = NULL; + l = nm_str_skip_leading_spaces(str); + l_len = strlen(l); + prefix_len = l - str; - split = g_strsplit(l, "\"", -1); - if (split[0] && nm_streq0(split[1], escaped_duid)) - return TRUE; + ends_with_r = l_len > 0 && l[l_len - 1u] == '\r'; + if (ends_with_r) { + ((char *) l)[--l_len] = '\0'; + } + if (NM_STR_HAS_PREFIX(l, DEFAULT_DUID_PREFIX)) { + /* We always add our line on top. This line can be skipped. */ continue; } - if (str) - g_string_append(s, str); - /* avoid to add an extra '\n' at the end of file */ - if ((iter[1]) != NULL) + if (enforce_duid & NM_STR_HAS_PREFIX(l, "option dhcp6.client-id ")) { + /* we want to use our duid. Skip the per-lease client-id. */ + if (!conflicting_duid_line) { + gs_free char *duid_hex = nm_dhcp_dhclient_escape_duid_as_hex(duid); + + conflicting_duid_line = g_strdup_printf("option dhcp6.client-id %s;", duid_hex); + } + /* We adjust the duid line and set what we want. */ + l = conflicting_duid_line; + } + + g_string_append_len(s, str, prefix_len); + g_string_append(s, l); + if (ends_with_r) { + g_string_append_c(s, '\r'); g_string_append_c(s, '\n'); + } else if ((iter[1]) != NULL) { + /* avoid to add an extra '\n' at the end of file */ + g_string_append_c(s, '\n'); + } } } + if (contents && strlen(contents) == contents_len && nm_streq(contents, s->str)) { + /* The file is already as we want it. We are done. */ + return TRUE; + } + if (!g_file_set_contents(leasefile, s->str, -1, error)) { g_prefix_error(error, "failed to set DUID in lease file %s: ", leasefile); return FALSE; diff --git a/src/core/dhcp/nm-dhcp-dhclient-utils.h b/src/core/dhcp/nm-dhcp-dhclient-utils.h index 0ce7dd90..6187cce0 100644 --- a/src/core/dhcp/nm-dhcp-dhclient-utils.h +++ b/src/core/dhcp/nm-dhcp-dhclient-utils.h @@ -29,6 +29,9 @@ GBytes *nm_dhcp_dhclient_unescape_duid(const char *duid); GBytes *nm_dhcp_dhclient_read_duid(const char *leasefile, GError **error); -gboolean nm_dhcp_dhclient_save_duid(const char *leasefile, GBytes *duid, GError **error); +gboolean nm_dhcp_dhclient_save_duid(const char *leasefile, + GBytes *duid, + gboolean enforce_duid, + GError **error); #endif /* __NETWORKMANAGER_DHCP_DHCLIENT_UTILS_H__ */ diff --git a/src/core/dhcp/nm-dhcp-dhclient.c b/src/core/dhcp/nm-dhcp-dhclient.c index d0cd5ebd..e4f40d7c 100644 --- a/src/core/dhcp/nm-dhcp-dhclient.c +++ b/src/core/dhcp/nm-dhcp-dhclient.c @@ -82,6 +82,10 @@ G_DEFINE_TYPE(NMDhcpDhclient, nm_dhcp_dhclient, NM_TYPE_DHCP_CLIENT) /*****************************************************************************/ +static GBytes *read_duid_from_lease(NMDhcpDhclient *self); + +/*****************************************************************************/ + static const char * nm_dhcp_dhclient_get_path(void) { @@ -332,6 +336,7 @@ static gboolean dhclient_start(NMDhcpClient *client, gboolean set_mode, gboolean release, + gboolean set_duid, pid_t *out_pid, GError **error) { @@ -410,8 +415,11 @@ dhclient_start(NMDhcpClient *client, } /* Save the DUID to the leasefile dhclient will actually use */ - if (addr_family == AF_INET6) { - if (!nm_dhcp_dhclient_save_duid(priv->lease_file, client_config->client_id, &local)) { + if (set_duid && addr_family == AF_INET6) { + if (!nm_dhcp_dhclient_save_duid(priv->lease_file, + nm_dhcp_client_get_effective_client_id(client), + client_config->v6.enforce_duid, + &local)) { nm_utils_error_set(error, NM_UTILS_ERROR_UNKNOWN, "failed to save DUID to '%s': %s", @@ -547,11 +555,11 @@ ip4_start(NMDhcpClient *client, GError **error) return FALSE; } - if (new_client_id) { - nm_assert(!client_config->client_id); - nm_dhcp_client_set_effective_client_id(client, new_client_id); - } - return dhclient_start(client, FALSE, FALSE, NULL, error); + /* Note that the effective-client-id for IPv4 here might be unknown/NULL. */ + nm_assert(!new_client_id || !client_config->client_id); + nm_dhcp_client_set_effective_client_id(client, client_config->client_id ?: new_client_id); + + return dhclient_start(client, FALSE, FALSE, FALSE, NULL, error); } static gboolean @@ -560,6 +568,7 @@ ip6_start(NMDhcpClient *client, const struct in6_addr *ll_addr, GError **error) NMDhcpDhclient *self = NM_DHCP_DHCLIENT(client); NMDhcpDhclientPrivate *priv = NM_DHCP_DHCLIENT_GET_PRIVATE(self); const NMDhcpClientConfig *config; + gs_unref_bytes GBytes *effective_client_id = NULL; config = nm_dhcp_client_get_config(client); @@ -586,7 +595,12 @@ ip6_start(NMDhcpClient *client, const struct in6_addr *ll_addr, GError **error) return FALSE; } - return dhclient_start(client, TRUE, FALSE, NULL, error); + nm_assert(config->client_id); + if (!config->v6.enforce_duid) + effective_client_id = read_duid_from_lease(self); + nm_dhcp_client_set_effective_client_id(client, effective_client_id ?: config->client_id); + + return dhclient_start(client, TRUE, FALSE, TRUE, NULL, error); } static void @@ -620,7 +634,7 @@ stop(NMDhcpClient *client, gboolean release) if (release) { pid_t rpid = -1; - if (dhclient_start(client, FALSE, TRUE, &rpid, NULL)) { + if (dhclient_start(client, FALSE, TRUE, FALSE, &rpid, NULL)) { /* Wait a few seconds for the release to happen */ nm_dhcp_client_stop_pid(rpid, nm_dhcp_client_get_iface(client)); } @@ -628,10 +642,10 @@ stop(NMDhcpClient *client, gboolean release) } static GBytes * -get_duid(NMDhcpClient *client) +read_duid_from_lease(NMDhcpDhclient *self) { - NMDhcpDhclient *self = NM_DHCP_DHCLIENT(client); - NMDhcpDhclientPrivate *priv = NM_DHCP_DHCLIENT_GET_PRIVATE(self); + NMDhcpClient *client = NM_DHCP_CLIENT(self); + NMDhcpDhclientPrivate *priv = NM_DHCP_DHCLIENT_GET_PRIVATE(self); const NMDhcpClientConfig *client_config; GBytes *duid = NULL; gs_free char *leasefile = NULL; @@ -724,7 +738,6 @@ nm_dhcp_dhclient_class_init(NMDhcpDhclientClass *dhclient_class) client_class->ip4_start = ip4_start; client_class->ip6_start = ip6_start; client_class->stop = stop; - client_class->get_duid = get_duid; } const NMDhcpClientFactory _nm_dhcp_client_factory_dhclient = { diff --git a/src/core/dhcp/nm-dhcp-nettools.c b/src/core/dhcp/nm-dhcp-nettools.c index 05b7b52e..df88362e 100644 --- a/src/core/dhcp/nm-dhcp-nettools.c +++ b/src/core/dhcp/nm-dhcp-nettools.c @@ -624,7 +624,7 @@ lease_to_ip4_config(NMDhcpNettools *self, NDhcp4ClientLease *lease, GError **err l3cd = nm_dhcp_client_create_l3cd(NM_DHCP_CLIENT(self)); - options = nm_dhcp_option_create_options_dict(); + options = nm_dhcp_client_create_options_dict(NM_DHCP_CLIENT(self), TRUE); if (!lease_parse_address(self, lease, l3cd, iface, options, &lease_address, error)) return NULL; @@ -1100,7 +1100,7 @@ dhcp4_event_cb(int fd, GIOCondition condition, gpointer user_data) } static gboolean -nettools_create(NMDhcpNettools *self, GError **error) +nettools_create(NMDhcpNettools *self, GBytes **out_effective_client_id, GError **error) { NMDhcpNettoolsPrivate *priv = NM_DHCP_NETTOOLS_GET_PRIVATE(self); nm_auto(n_dhcp4_client_config_freep) NDhcp4ClientConfig *config = NULL; @@ -1197,6 +1197,9 @@ nettools_create(NMDhcpNettools *self, GError **error) priv->event_source = nm_g_unix_fd_add_source(fd, G_IO_IN, dhcp4_event_cb, self); + *out_effective_client_id = + (client_id == client_id_new) ? g_steal_pointer(&client_id_new) : g_bytes_ref(client_id); + return TRUE; } @@ -1287,8 +1290,9 @@ static gboolean ip4_start(NMDhcpClient *client, GError **error) { nm_auto(n_dhcp4_client_probe_config_freep) NDhcp4ClientProbeConfig *config = NULL; - NMDhcpNettools *self = NM_DHCP_NETTOOLS(client); - NMDhcpNettoolsPrivate *priv = NM_DHCP_NETTOOLS_GET_PRIVATE(self); + NMDhcpNettools *self = NM_DHCP_NETTOOLS(client); + NMDhcpNettoolsPrivate *priv = NM_DHCP_NETTOOLS_GET_PRIVATE(self); + gs_unref_bytes GBytes *effective_client_id = NULL; const NMDhcpClientConfig *client_config; gs_free char *lease_file = NULL; struct in_addr last_addr = {0}; @@ -1299,7 +1303,7 @@ ip4_start(NMDhcpClient *client, GError **error) g_return_val_if_fail(!priv->probe, FALSE); g_return_val_if_fail(client_config, FALSE); - if (!nettools_create(self, error)) + if (!nettools_create(self, &effective_client_id, error)) return FALSE; r = n_dhcp4_client_probe_config_new(&config); @@ -1445,6 +1449,9 @@ ip4_start(NMDhcpClient *client, GError **error) } _LOGT("dhcp-client4: start " NM_HASH_OBFUSCATE_PTR_FMT, NM_HASH_OBFUSCATE_PTR(priv->client)); + + nm_dhcp_client_set_effective_client_id(client, effective_client_id); + return TRUE; } diff --git a/src/core/dhcp/nm-dhcp-options.c b/src/core/dhcp/nm-dhcp-options.c index 96fef81a..a5bb06d1 100644 --- a/src/core/dhcp/nm-dhcp-options.c +++ b/src/core/dhcp/nm-dhcp-options.c @@ -190,12 +190,12 @@ static const NMDhcpOption *const _sorted_options_4[G_N_ELEMENTS(_nm_dhcp_option_ }; const NMDhcpOption _nm_dhcp_option_dhcp6_options[] = { - REQ(NM_DHCP_OPTION_DHCP6_CLIENTID, "dhcp6_client_id", FALSE), + REQ(NM_DHCP_OPTION_DHCP6_CLIENT_ID, "dhcp6_client_id", FALSE), /* Don't request server ID by default; some servers don't reply to * Information Requests that request the Server ID. */ - REQ(NM_DHCP_OPTION_DHCP6_SERVERID, "dhcp6_server_id", FALSE), + REQ(NM_DHCP_OPTION_DHCP6_SERVER_ID, "dhcp6_server_id", FALSE), REQ(NM_DHCP_OPTION_DHCP6_DNS_SERVERS, "dhcp6_name_servers", TRUE), REQ(NM_DHCP_OPTION_DHCP6_DOMAIN_LIST, "dhcp6_domain_search", TRUE), @@ -460,7 +460,7 @@ nm_dhcp_option_add_requests_to_options(GHashTable *options, int addr_family) } GHashTable * -nm_dhcp_option_create_options_dict(void) +nm_dhcp_option_create_options_dict(gboolean static_keys) { - return g_hash_table_new_full(nm_str_hash, g_str_equal, NULL, g_free); + return g_hash_table_new_full(nm_str_hash, g_str_equal, static_keys ? NULL : g_free, g_free); } diff --git a/src/core/dhcp/nm-dhcp-options.h b/src/core/dhcp/nm-dhcp-options.h index 4c978c4f..fcc6f9cd 100644 --- a/src/core/dhcp/nm-dhcp-options.h +++ b/src/core/dhcp/nm-dhcp-options.h @@ -157,8 +157,8 @@ typedef enum { } NMDhcpOptionDhcp4Options; typedef enum { - NM_DHCP_OPTION_DHCP6_CLIENTID = 1, - NM_DHCP_OPTION_DHCP6_SERVERID = 2, + NM_DHCP_OPTION_DHCP6_CLIENT_ID = 1, + NM_DHCP_OPTION_DHCP6_SERVER_ID = 2, NM_DHCP_OPTION_DHCP6_DNS_SERVERS = 23, NM_DHCP_OPTION_DHCP6_DOMAIN_LIST = 24, NM_DHCP_OPTION_DHCP6_SNTP_SERVERS = 31, @@ -222,7 +222,8 @@ void nm_dhcp_option_add_option_in_addr(GHashTable *options, in_addr_t value); void nm_dhcp_option_add_option_u64(GHashTable *options, int addr_family, guint option, guint64 value); -void nm_dhcp_option_add_requests_to_options(GHashTable *options, int addr_family); -GHashTable *nm_dhcp_option_create_options_dict(void); +void nm_dhcp_option_add_requests_to_options(GHashTable *options, int addr_family); + +GHashTable *nm_dhcp_option_create_options_dict(gboolean static_keys); #endif /* __NM_DHCP_OPTIONS_H__ */ diff --git a/src/core/dhcp/nm-dhcp-systemd.c b/src/core/dhcp/nm-dhcp-systemd.c index 49e21d97..7ce15d30 100644 --- a/src/core/dhcp/nm-dhcp-systemd.c +++ b/src/core/dhcp/nm-dhcp-systemd.c @@ -86,7 +86,7 @@ lease_to_ip6_config(NMDhcpSystemd *self, sd_dhcp6_lease *lease, gint32 ts, GErro l3cd = nm_dhcp_client_create_l3cd(NM_DHCP_CLIENT(self)); - options = nm_dhcp_option_create_options_dict(); + options = nm_dhcp_client_create_options_dict(NM_DHCP_CLIENT(self), TRUE); if (!nm_dhcp_client_get_config(NM_DHCP_CLIENT(self))->v6.info_only) { gboolean has_any_addresses = FALSE; @@ -271,7 +271,7 @@ ip6_start(NMDhcpClient *client, const struct in6_addr *ll_addr, GError **error) /* TODO: honor nm_dhcp_client_get_anycast_address() */ - duid = nm_dhcp_client_get_effective_client_id(client); + duid = client_config->client_id; if (!duid || !(duid_arr = g_bytes_get_data(duid, &duid_len)) || duid_len < 2) { nm_utils_error_set_literal(error, NM_UTILS_ERROR_UNKNOWN, "missing DUID"); g_return_val_if_reached(FALSE); @@ -379,6 +379,8 @@ ip6_start(NMDhcpClient *client, const struct in6_addr *ll_addr, GError **error) return FALSE; } + nm_dhcp_client_set_effective_client_id(client, duid); + return TRUE; } diff --git a/src/core/dhcp/tests/test-dhcp-dhclient.c b/src/core/dhcp/tests/test-dhcp-dhclient.c index aaa0dbc3..e95f218e 100644 --- a/src/core/dhcp/tests/test-dhcp-dhclient.c +++ b/src/core/dhcp/tests/test-dhcp-dhclient.c @@ -895,122 +895,175 @@ test_read_commented_duid_from_leasefile(void) /*****************************************************************************/ static void -_save_duid(const char *path, const guint8 *duid_bin, gsize duid_len) +_check_duid_impl(const guint8 *duid_bin, + gsize duid_len, + gboolean enforce_duid, + const char *old_content, + const char *new_content) { - gs_unref_bytes GBytes *duid = NULL; - GError *error = NULL; + gs_free_error GError *error = NULL; + gs_free char *contents = NULL; gboolean success; + const char *path = NM_BUILD_BUILDDIR "/src/core/dhcp/tests/check-duid.lease"; + gs_unref_bytes GBytes *duid = NULL; + gsize contents_len; - g_assert(path); g_assert(duid_bin); g_assert(duid_len > 0); - duid = g_bytes_new(duid_bin, duid_len); - success = nm_dhcp_dhclient_save_duid(path, duid, &error); - nmtst_assert_success(success, error); -} - -static void -test_write_duid(void) -{ - const guint8 duid[] = {000, 001, 000, 001, 027, 'X', 0350, 'X', 0, '#', 025, 010, '~', 0254}; - const char *expected_contents = - "default-duid \"\\000\\001\\000\\001\\027X\\350X\\000#\\025\\010~\\254\";\n"; - GError *error = NULL; - gs_free char *contents = NULL; - gboolean success; - const char *path = "test-dhclient-write-duid.leases"; + if (!nm_str_is_empty(old_content) || nmtst_get_rand_bool()) { + success = g_file_set_contents(path, old_content ?: "", -1, &error); + nmtst_assert_success(success, error); + } else + nmtst_file_unlink_if_exists(path); - _save_duid(path, duid, G_N_ELEMENTS(duid)); + duid = g_bytes_new(duid_bin, duid_len); - success = g_file_get_contents(path, &contents, NULL, &error); + success = nm_dhcp_dhclient_save_duid(path, duid, enforce_duid, &error); nmtst_assert_success(success, error); - unlink(path); - - g_assert_cmpstr(expected_contents, ==, contents); -} - -static void -test_write_existing_duid(void) -{ - const guint8 duid[] = - {000, 001, 000, 001, 023, 'o', 023, 'n', 000, '"', 0372, 0214, 0326, 0302}; - const char *original_contents = - "default-duid \"\\000\\001\\000\\001\\027X\\350X\\000#\\025\\010~\\254\";\n"; - const char *expected_contents = - "default-duid \"\\000\\001\\000\\001\\023o\\023n\\000\\\"\\372\\214\\326\\302\";\n"; - GError *error = NULL; - gs_free char *contents = NULL; - gboolean success; - const char *path = "test-dhclient-write-existing-duid.leases"; - - success = g_file_set_contents(path, original_contents, -1, &error); + success = g_file_get_contents(path, &contents, &contents_len, &error); nmtst_assert_success(success, error); + g_assert(contents); - /* Save other DUID; should be overwritten */ - _save_duid(path, duid, G_N_ELEMENTS(duid)); + nmtst_file_unlink(path); - /* reread original contents */ - success = g_file_get_contents(path, &contents, NULL, &error); - nmtst_assert_success(success, error); + if (!nm_streq0(new_content, contents)) + g_error("FAILING:\n\nEXPECTED:\n%s\nACTUAL:\n%s\n\n", new_content, contents); - unlink(path); - g_assert_cmpstr(expected_contents, ==, contents); + g_assert_cmpstr(new_content, ==, contents); + g_assert_cmpint(contents_len, ==, strlen(contents)); } -static const guint8 DUID_BIN[] = - {000, 001, 000, 001, 023, 'o', 023, 'n', 000, '"', 0372, 0214, 0326, 0302}; -#define DUID "\\000\\001\\000\\001\\023o\\023n\\000\\\"\\372\\214\\326\\302" +#define _DUID(...) ((const guint8[]){__VA_ARGS__}) -static void -test_write_existing_commented_duid(void) -{ -#define ORIG_CONTENTS "#default-duid \"\\000\\001\\000\\001\\027X\\350X\\000#\\025\\010~\\254\";\n" - const char *expected_contents = "default-duid \"" DUID "\";\n" ORIG_CONTENTS; - GError *error = NULL; - gs_free char *contents = NULL; - gboolean success; - const char *path = "test-dhclient-write-existing-commented-duid.leases"; - - success = g_file_set_contents(path, ORIG_CONTENTS, -1, &error); - nmtst_assert_success(success, error); - - /* Save other DUID; should be saved on top */ - _save_duid(path, DUID_BIN, G_N_ELEMENTS(DUID_BIN)); - - /* reread original contents */ - success = g_file_get_contents(path, &contents, NULL, &error); - nmtst_assert_success(success, error); - - unlink(path); - g_assert_cmpstr(expected_contents, ==, contents); -#undef ORIG_CONTENTS -} +#define _check_duid(duid, enforce_duid, old_content, new_content) \ + _check_duid_impl((duid), sizeof(duid), (enforce_duid), (old_content), (new_content)) static void -test_write_existing_multiline_duid(void) +test_write_duid(void) { -#define ORIG_CONTENTS \ - "### Commented old DUID ###\n" \ - "#default-duid \"\\000\\001\\000\\001\\027X\\350X\\000#\\025\\010~\\254\";\n" - const char *expected_contents = "default-duid \"" DUID "\";\n" ORIG_CONTENTS; - GError *error = NULL; - gs_free char *contents = NULL; - gboolean success; - nmtst_auto_unlinkfile char *path = - g_strdup("test-dhclient-write-existing-multiline-duid.leases"); - - success = g_file_set_contents(path, ORIG_CONTENTS, -1, &error); - nmtst_assert_success(success, error); - - _save_duid(path, DUID_BIN, G_N_ELEMENTS(DUID_BIN)); + _check_duid(_DUID(000, 001, 000, 001, 027, 'X', 0350, 'X', 0, '#', 025, 010, '~', 0254), + FALSE, + NULL, + "default-duid \"\\000\\001\\000\\001\\027X\\350X\\000#\\025\\010~\\254\";\n"); - success = g_file_get_contents(path, &contents, NULL, &error); - nmtst_assert_success(success, error); + _check_duid( + _DUID(000, 001, 000, 001, 023, 'o', 023, 'n', 000, '"', 0372, 0214, 0326, 0302), + FALSE, + "default-duid \"\\000\\001\\000\\001\\027X\\350X\\000#\\025\\010~\\254\";\n", + "default-duid \"\\000\\001\\000\\001\\023o\\023n\\000\\\"\\372\\214\\326\\302\";\n"); - g_assert_cmpstr(expected_contents, ==, contents); -#undef ORIG_CONTENTS + _check_duid(_DUID(000, 001, 000, 001, 023, 'o', 023, 'n', 000, '"', 0372, 0214, 0326, 0302), + FALSE, + "#default-duid \"\\000\\001\\000\\001\\027X\\350X\\000#\\025\\010~\\254\";\n", + "default-duid " + "\"\\000\\001\\000\\001\\023o\\023n\\000\\\"\\372\\214\\326\\302\";\n#default-duid " + "\"\\000\\001\\000\\001\\027X\\350X\\000#\\025\\010~\\254\";\n"); + _check_duid( + _DUID(000, 001, 000, 001, 023, 'o', 023, 'n', 000, '"', 0372, 0214, 0326, 0302), + FALSE, + "### Commented old DUID ###\n#default-duid " + "\"\\000\\001\\000\\001\\027X\\350X\\000#\\025\\010~\\254\";\n", + "default-duid \"\\000\\001\\000\\001\\023o\\023n\\000\\\"\\372\\214\\326\\302\";\n### " + "Commented old DUID ###\n#default-duid " + "\"\\000\\001\\000\\001\\027X\\350X\\000#\\025\\010~\\254\";\n"); + + _check_duid( + _DUID(0xaa, 0xb, 0xcc, 0xd, 0xee, 0xf), + FALSE, + "default-duid \"\\252\\013\\314\\015\\356\\017\";\nlease6 {\n interface \"eth1\";\n " + " ia-na f1:ce:00:01 {\n starts 1671015678;\n renew 60;\n rebind 105;\n " + "iaaddr 192:168:121::1:112c {\n starts 1671015678;\n preferred-life 120;\n " + " max-life 120;\n }\n }\n option fqdn.encoded true;\n option " + "fqdn.server-update true;\n option fqdn.no-client-update false;\n option fqdn.fqdn " + "\"dff6de4fcb0f\";\n option fqdn.hostname \"dff6de4fcb0f\";\n option dhcp6.client-id " + "aa:b:cc:d:ee:f;\n option dhcp6.server-id 0:1:0:1:2b:2c:4d:1d:0:0:0:0:0:0;\n option " + "dhcp6.name-servers 192:168:121:0:ce0f:f1ff:fece:1;\n option dhcp6.fqdn " + "1:c:64:66:66:36:64:65:34:66:63:62:30:66;\n option dhcp6.status-code success " + "\"success\";\n}\n", + "default-duid \"\\252\\013\\314\\015\\356\\017\";\nlease6 {\n interface \"eth1\";\n " + " ia-na f1:ce:00:01 {\n starts 1671015678;\n renew 60;\n rebind 105;\n " + "iaaddr 192:168:121::1:112c {\n starts 1671015678;\n preferred-life 120;\n " + " max-life 120;\n }\n }\n option fqdn.encoded true;\n option " + "fqdn.server-update true;\n option fqdn.no-client-update false;\n option fqdn.fqdn " + "\"dff6de4fcb0f\";\n option fqdn.hostname \"dff6de4fcb0f\";\n option dhcp6.client-id " + "aa:b:cc:d:ee:f;\n option dhcp6.server-id 0:1:0:1:2b:2c:4d:1d:0:0:0:0:0:0;\n option " + "dhcp6.name-servers 192:168:121:0:ce0f:f1ff:fece:1;\n option dhcp6.fqdn " + "1:c:64:66:66:36:64:65:34:66:63:62:30:66;\n option dhcp6.status-code success " + "\"success\";\n}\n"); + + _check_duid( + _DUID(0xaa, 0xb, 0xcc, 0xd, 0xee, 0xf), + FALSE, + "default-duid \"\\252\\013\\314\\015\\356\\017\";\nlease6 {\n interface \"eth1\";\n " + " ia-na f1:ce:00:01 {\n starts 1671015678;\n renew 60;\n rebind 105;\n " + "iaaddr 192:168:121::1:112c {\n starts 1671015678;\n preferred-life 120;\n " + " max-life 120;\n }\n }\n option fqdn.encoded true;\n option " + "fqdn.server-update true;\n option fqdn.no-client-update false;\n option fqdn.fqdn " + "\"dff6de4fcb0f\";\n option fqdn.hostname \"dff6de4fcb0f\";\n option dhcp6.client-id " + "aa:b:cc:d:ee:f;\n option dhcp6.server-id 0:1:0:1:2b:2c:4d:1d:0:0:0:0:0:0;\n option " + "dhcp6.name-servers 192:168:121:0:ce0f:f1ff:fece:1;\n option dhcp6.fqdn " + "1:c:64:66:66:36:64:65:34:66:63:62:30:66;\n option dhcp6.status-code success " + "\"success\";\r\n}\n", + "default-duid \"\\252\\013\\314\\015\\356\\017\";\nlease6 {\n interface \"eth1\";\n " + " ia-na f1:ce:00:01 {\n starts 1671015678;\n renew 60;\n rebind 105;\n " + "iaaddr 192:168:121::1:112c {\n starts 1671015678;\n preferred-life 120;\n " + " max-life 120;\n }\n }\n option fqdn.encoded true;\n option " + "fqdn.server-update true;\n option fqdn.no-client-update false;\n option fqdn.fqdn " + "\"dff6de4fcb0f\";\n option fqdn.hostname \"dff6de4fcb0f\";\n option dhcp6.client-id " + "aa:b:cc:d:ee:f;\n option dhcp6.server-id 0:1:0:1:2b:2c:4d:1d:0:0:0:0:0:0;\n option " + "dhcp6.name-servers 192:168:121:0:ce0f:f1ff:fece:1;\n option dhcp6.fqdn " + "1:c:64:66:66:36:64:65:34:66:63:62:30:66;\n option dhcp6.status-code success " + "\"success\";\r\n}\n"); + + _check_duid( + _DUID(0xaa, 0xb, 0xcc, 0xd, 0xee, 0xe), + FALSE, + "default-duid \"\\252\\013\\314\\015\\356\\017\";\nlease6 {\n interface \"eth1\";\n " + " ia-na f1:ce:00:01 {\n starts 1671015678;\n renew 60;\n rebind 105;\n " + "iaaddr 192:168:121::1:112c {\n starts 1671015678;\n preferred-life 120;\n " + " max-life 120;\n }\n }\n option fqdn.encoded true;\n option " + "fqdn.server-update true;\n option fqdn.no-client-update false;\n option fqdn.fqdn " + "\"dff6de4fcb0f\";\n option fqdn.hostname \"dff6de4fcb0f\";\n option dhcp6.client-id " + "aa:b:cc:d:ee:f;\n option dhcp6.server-id 0:1:0:1:2b:2c:4d:1d:0:0:0:0:0:0;\n option " + "dhcp6.name-servers 192:168:121:0:ce0f:f1ff:fece:1;\n option dhcp6.fqdn " + "1:c:64:66:66:36:64:65:34:66:63:62:30:66;\n option dhcp6.status-code success " + "\"success\";\r\n}\n", + "default-duid \"\\252\\013\\314\\015\\356\\016\";\nlease6 {\n interface \"eth1\";\n " + " ia-na f1:ce:00:01 {\n starts 1671015678;\n renew 60;\n rebind 105;\n " + "iaaddr 192:168:121::1:112c {\n starts 1671015678;\n preferred-life 120;\n " + " max-life 120;\n }\n }\n option fqdn.encoded true;\n option " + "fqdn.server-update true;\n option fqdn.no-client-update false;\n option fqdn.fqdn " + "\"dff6de4fcb0f\";\n option fqdn.hostname \"dff6de4fcb0f\";\n option dhcp6.client-id " + "aa:b:cc:d:ee:f;\n option dhcp6.server-id 0:1:0:1:2b:2c:4d:1d:0:0:0:0:0:0;\n option " + "dhcp6.name-servers 192:168:121:0:ce0f:f1ff:fece:1;\n option dhcp6.fqdn " + "1:c:64:66:66:36:64:65:34:66:63:62:30:66;\n option dhcp6.status-code success " + "\"success\";\r\n}\n"); + + _check_duid( + _DUID(0xaa, 0xb, 0xcc, 0xd, 0xee, 0xe), + TRUE, + "default-duid \"\\252\\013\\314\\015\\356\\017\";\nlease6 {\n interface \"eth1\";\n " + " ia-na f1:ce:00:01 {\n starts 1671015678;\n renew 60;\n rebind 105;\n " + "iaaddr 192:168:121::1:112c {\n starts 1671015678;\n preferred-life 120;\n " + " max-life 120;\n }\n }\n option fqdn.encoded true;\n option " + "fqdn.server-update true;\n option fqdn.no-client-update false;\n option fqdn.fqdn " + "\"dff6de4fcb0f\";\n option fqdn.hostname \"dff6de4fcb0f\";\n option dhcp6.client-id " + "aa:b:cc:d:ee:f;\n option dhcp6.server-id 0:1:0:1:2b:2c:4d:1d:0:0:0:0:0:0;\n option " + "dhcp6.name-servers 192:168:121:0:ce0f:f1ff:fece:1;\n option dhcp6.fqdn " + "1:c:64:66:66:36:64:65:34:66:63:62:30:66;\n option dhcp6.status-code success " + "\"success\";\n}\n", + "default-duid \"\\252\\013\\314\\015\\356\\016\";\nlease6 {\n interface \"eth1\";\n " + " ia-na f1:ce:00:01 {\n starts 1671015678;\n renew 60;\n rebind 105;\n " + "iaaddr 192:168:121::1:112c {\n starts 1671015678;\n preferred-life 120;\n " + " max-life 120;\n }\n }\n option fqdn.encoded true;\n option " + "fqdn.server-update true;\n option fqdn.no-client-update false;\n option fqdn.fqdn " + "\"dff6de4fcb0f\";\n option fqdn.hostname \"dff6de4fcb0f\";\n option dhcp6.client-id " + "aa:b:cc:d:ee:e;\n option dhcp6.server-id 0:1:0:1:2b:2c:4d:1d:0:0:0:0:0:0;\n option " + "dhcp6.name-servers 192:168:121:0:ce0f:f1ff:fece:1;\n option dhcp6.fqdn " + "1:c:64:66:66:36:64:65:34:66:63:62:30:66;\n option dhcp6.status-code success " + "\"success\";\n}\n"); } /*****************************************************************************/ @@ -1329,12 +1382,7 @@ main(int argc, char **argv) g_test_add_func("/dhcp/dhclient/read_commented_duid_from_leasefile", test_read_commented_duid_from_leasefile); - g_test_add_func("/dhcp/dhclient/write_duid", test_write_duid); - g_test_add_func("/dhcp/dhclient/write_existing_duid", test_write_existing_duid); - g_test_add_func("/dhcp/dhclient/write_existing_commented_duid", - test_write_existing_commented_duid); - g_test_add_func("/dhcp/dhclient/write_existing_multiline_duid", - test_write_existing_multiline_duid); + g_test_add_func("/dhcp/dhclient/test_write_duid", test_write_duid); return g_test_run(); } |