/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */ /* NetworkManager system settings service - keyfile plugin * * 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 of the License, 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) 2008 - 2009 Novell, Inc. * Copyright (C) 2008 - 2017 Red Hat, Inc. */ #include "nm-default.h" #include "nm-keyfile-internal.h" #include #include #include #include #include #include #include #include #include "nm-common-macros.h" #include "nm-core-internal.h" #include "nm-keyfile-utils.h" #include "nm-setting-user.h" typedef struct { NMConnection *connection; GKeyFile *keyfile; const char *base_dir; NMKeyfileReadHandler handler; void *user_data; GError *error; const char *group; NMSetting *setting; } KeyfileReaderInfo; static void _handle_warn (KeyfileReaderInfo *info, const char *property_name, NMKeyfileWarnSeverity severity, char *message) { NMKeyfileReadTypeDataWarn type_data = { .group = info->group, .setting = info->setting, .property_name = property_name, .severity = severity, .message = message, }; info->handler (info->keyfile, info->connection, NM_KEYFILE_READ_TYPE_WARN, &type_data, info->user_data, &info->error); g_free (message); } #define handle_warn(arg_info, arg_property_name, arg_severity, ...) \ ({ \ KeyfileReaderInfo *_info = (arg_info); \ \ if (_info->handler) { \ _handle_warn (_info, (arg_property_name), (arg_severity), \ g_strdup_printf (__VA_ARGS__)); \ } \ _info->error == NULL; \ }) /* Some setting properties also contain setting names, such as * NMSettingConnection's 'type' property (which specifies the base type of the * connection, e.g. ethernet or wifi) or 'slave-type' (specifies type of slave * connection, e.g. bond or bridge). This function handles translating those * properties' values to the real setting name if they are an alias. */ static void setting_alias_parser (KeyfileReaderInfo *info, NMSetting *setting, const char *key) { const char *setting_name = nm_setting_get_name (setting); char *s; const char *key_setting_name; s = nm_keyfile_plugin_kf_get_string (info->keyfile, setting_name, key, NULL); if (s) { key_setting_name = nm_keyfile_plugin_get_setting_name_for_alias (s); g_object_set (G_OBJECT (setting), key, key_setting_name ? key_setting_name : s, NULL); g_free (s); } } static void read_array_of_uint (GKeyFile *file, NMSetting *setting, const char *key) { gs_unref_array GArray *array = NULL; gsize length; gsize i; gs_free int *tmp = NULL; tmp = nm_keyfile_plugin_kf_get_integer_list (file, nm_setting_get_name (setting), key, &length, NULL); if (length > G_MAXUINT) return; array = g_array_sized_new (FALSE, FALSE, sizeof (guint), length); for (i = 0; i < length; i++) { if (tmp[i] < 0) return; g_array_append_val (array, tmp[i]); } g_object_set (setting, key, array, NULL); } static gboolean get_one_int (KeyfileReaderInfo *info, const char *property_name, const char *str, guint32 max_val, guint32 *out) { gint64 tmp; g_return_val_if_fail (!info == !property_name, FALSE); if (!str || !str[0]) { if (property_name) handle_warn (info, property_name, NM_KEYFILE_WARN_SEVERITY_WARN, _("ignoring missing number")); return FALSE; } tmp = _nm_utils_ascii_str_to_int64 (str, 10, 0, max_val, -1); if (tmp == -1) { if (property_name) { handle_warn (info, property_name, NM_KEYFILE_WARN_SEVERITY_WARN, _("ignoring invalid number '%s'"), str); } return FALSE; } *out = (guint32) tmp; return TRUE; } static gpointer build_address (KeyfileReaderInfo *info, int family, const char *address_str, guint32 plen, const char *property_name) { NMIPAddress *addr; GError *error = NULL; g_return_val_if_fail (address_str, NULL); addr = nm_ip_address_new (family, address_str, plen, &error); if (!addr) { handle_warn (info, property_name, NM_KEYFILE_WARN_SEVERITY_WARN, _("ignoring invalid %s address: %s"), family == AF_INET ? "IPv4" : "IPv6", error->message); g_error_free (error); } return addr; } static gpointer build_route (KeyfileReaderInfo *info, const char *property_name, int family, const char *dest_str, guint32 plen, const char *gateway_str, const char *metric_str) { NMIPRoute *route; guint32 u32; gint64 metric = -1; GError *error = NULL; g_return_val_if_fail (plen, NULL); g_return_val_if_fail (dest_str, NULL); /* Next hop */ if (gateway_str && gateway_str[0]) { if (!nm_utils_ipaddr_valid (family, gateway_str)) { /* Try workaround for routes written by broken keyfile writer. * Due to bug bgo#719851, an older version of writer would have * written "a:b:c:d::/plen,metric" if the gateway was ::, instead * of "a:b:c:d::/plen,,metric" or "a:b:c:d::/plen,::,metric" * Try workaround by interpreting gateway_str as metric to accept such * invalid routes. This broken syntax should not be not officially * supported. **/ if ( family == AF_INET6 && !metric_str && get_one_int (NULL, NULL, gateway_str, G_MAXUINT32, &u32)) { metric = u32; gateway_str = NULL; } else { if (!info->error) { handle_warn (info, property_name, NM_KEYFILE_WARN_SEVERITY_WARN, _("ignoring invalid gateway '%s' for %s route"), gateway_str, family == AF_INET ? "IPv4" : "IPv6"); } return NULL; } } } else gateway_str = NULL; /* parse metric, default to -1 */ if (metric_str) { if (!get_one_int (info, property_name, metric_str, G_MAXUINT32, &u32)) return NULL; metric = u32; } route = nm_ip_route_new (family, dest_str, plen, gateway_str, metric, &error); if (!route) { handle_warn (info, property_name, NM_KEYFILE_WARN_SEVERITY_WARN, _("ignoring invalid %s route: %s"), family == AF_INET ? "IPv4" : "IPv6", error->message); g_error_free (error); } return route; } /* On success, returns pointer to the zero-terminated field (original @current). * The @current * pointer target is set to point to the rest of the input * or %NULL if there is no more input. Sets error to %NULL for convenience. * * On failure, returns %NULL (unspecified). The @current pointer target is * resets to its original value to allow skipping fields. The @error target * is set to the character that breaks the parsing or %NULL if @current was %NULL. * * When @current target is %NULL, gracefully fail returning %NULL while * leaving the @current target %NULL end setting @error to %NULL; */ static const char * read_field (char **current, const char **out_err_str, const char *characters, const char *delimiters) { const char *start; nm_assert (current); nm_assert (out_err_str); nm_assert (characters); nm_assert (delimiters); *out_err_str = NULL; if (!*current) { /* graceful failure, leave '*current' NULL */ return NULL; } /* fail on empty input */ if (!**current) return NULL; /* remember beginning of input */ start = *current; while (**current && strchr (characters, **current)) (*current)++; if (**current) if (strchr (delimiters, **current)) { /* success, more data available */ *(*current)++ = '\0'; return start; } else { /* error, bad character */ *out_err_str = *current; *current = (char *) start; return NULL; } else { /* success, end of input */ *current = NULL; return start; } } #define IP_ADDRESS_CHARS "0123456789abcdefABCDEF:.%" #define DIGITS "0123456789" #define DELIMITERS "/;," /* The following IPv4 and IPv6 address formats are supported: * * address (DEPRECATED) * address/plen * address/gateway (DEPRECATED) * address/plen,gateway * * The following IPv4 and IPv6 route formats are supported: * * address/plen (NETWORK dev DEVICE) * address/plen,gateway (NETWORK via GATEWAY dev DEVICE) * address/plen,,metric (NETWORK dev DEVICE metric METRIC) * address/plen,gateway,metric (NETWORK via GATEWAY dev DEVICE metric METRIC) * * For backward, forward and sideward compatibility, slash (/), * semicolon (;) and comma (,) are interchangable. The choice of * separator in the above examples is therefore not significant. * * Leaving out the prefix length is discouraged and DEPRECATED. The * default value of IPv6 prefix length was 64 and has not been * changed. The default for IPv4 is now 24, which is the closest * IPv4 equivalent. These defaults may just as well be changed to * match the iproute2 defaults (32 for IPv4 and 128 for IPv6). */ static gpointer read_one_ip_address_or_route (KeyfileReaderInfo *info, const char *property_name, const char *setting_name, const char *key_name, gboolean ipv6, gboolean route, char **out_gateway, NMSetting *setting) { guint plen; gpointer result; const char *address_str; const char *plen_str; const char *gateway_str; const char *metric_str; const char *err_str = NULL; char *current; gs_free char *value = NULL; gs_free char *value_orig = NULL; #define VALUE_ORIG() (value_orig ? value_orig : (value_orig = nm_keyfile_plugin_kf_get_string (info->keyfile, setting_name, key_name, NULL))) value = nm_keyfile_plugin_kf_get_string (info->keyfile, setting_name, key_name, NULL); if (!value) return NULL; current = value; /* get address field */ address_str = read_field (¤t, &err_str, IP_ADDRESS_CHARS, DELIMITERS); if (err_str) { handle_warn (info, property_name, NM_KEYFILE_WARN_SEVERITY_WARN, _("unexpected character '%c' for address %s: '%s' (position %td)"), *err_str, key_name, VALUE_ORIG (), err_str - current); return NULL; } /* get prefix length field (skippable) */ plen_str = read_field (¤t, &err_str, DIGITS, DELIMITERS); /* get gateway field */ gateway_str = read_field (¤t, &err_str, IP_ADDRESS_CHARS, DELIMITERS); if (err_str) { handle_warn (info, property_name, NM_KEYFILE_WARN_SEVERITY_WARN, _("unexpected character '%c' for %s: '%s' (position %td)"), *err_str, key_name, VALUE_ORIG (), err_str - current); return NULL; } /* for routes, get metric */ if (route) { metric_str = read_field (¤t, &err_str, DIGITS, DELIMITERS); if (err_str) { handle_warn (info, property_name, NM_KEYFILE_WARN_SEVERITY_WARN, _("unexpected character '%c' in prefix length for %s: '%s' (position %td)"), *err_str, key_name, VALUE_ORIG (), err_str - current); return NULL; } } else metric_str = NULL; if (current) { /* there is still some data */ if (*current) { /* another field follows */ handle_warn (info, property_name, NM_KEYFILE_WARN_SEVERITY_WARN, _("garbage at the end of value %s: '%s'"), key_name, VALUE_ORIG ()); return NULL; } else { /* semicolon at the end of input */ if (!handle_warn (info, property_name, NM_KEYFILE_WARN_SEVERITY_INFO, _("deprecated semicolon at the end of value %s: '%s'"), key_name, VALUE_ORIG ())) return NULL; } } #define DEFAULT_PREFIX(for_route, for_ipv6) ( (for_route) ? ( (for_ipv6) ? 128 : 24 ) : ( (for_ipv6) ? 64 : 24 ) ) /* parse plen, fallback to defaults */ if (plen_str) { if ( !get_one_int (info, property_name, plen_str, ipv6 ? 128 : 32, &plen) || (route && plen == 0)) { plen = DEFAULT_PREFIX (route, ipv6); if ( info->error || !handle_warn (info, property_name, NM_KEYFILE_WARN_SEVERITY_WARN, _("invalid prefix length for %s '%s', defaulting to %d"), key_name, VALUE_ORIG (), plen)) return NULL; } } else { plen = DEFAULT_PREFIX (route, ipv6); if (!handle_warn (info, property_name, NM_KEYFILE_WARN_SEVERITY_WARN, _("missing prefix length for %s '%s', defaulting to %d"), key_name, VALUE_ORIG (), plen)) return NULL; } /* build the appropriate data structure for NetworkManager settings */ if (route) { result = build_route (info, property_name, ipv6 ? AF_INET6 : AF_INET, address_str, plen, gateway_str, metric_str); } else { result = build_address (info, ipv6 ? AF_INET6 : AF_INET, address_str, plen, property_name); if (!result) return NULL; if (out_gateway && gateway_str) *out_gateway = g_strdup (gateway_str); } #undef VALUE_ORIG return result; } static void fill_route_attributes (GKeyFile *kf, NMIPRoute *route, const char *setting, const char *key, int family) { gs_free char *value = NULL; gs_unref_hashtable GHashTable *hash = NULL; GHashTableIter iter; char *name; GVariant *variant; value = nm_keyfile_plugin_kf_get_string (kf, setting, key, NULL); if (!value || !value[0]) return; hash = nm_utils_parse_variant_attributes (value, ',', '=', TRUE, nm_ip_route_get_variant_attribute_spec (), NULL); if (hash) { g_hash_table_iter_init (&iter, hash); while (g_hash_table_iter_next (&iter, (gpointer *) &name, (gpointer *) &variant)) { if (nm_ip_route_attribute_validate (name, variant, family, NULL, NULL)) nm_ip_route_set_attribute (route, name, g_variant_ref (variant)); } } } static void ip_address_or_route_parser (KeyfileReaderInfo *info, NMSetting *setting, const char *key) { const char *setting_name = nm_setting_get_name (setting); gboolean ipv6 = !strcmp (setting_name, "ipv6"); gboolean routes = !strcmp (key, "routes"); static const char *key_names_routes[] = { "route", "routes", NULL }; static const char *key_names_addresses[] = { "address", "addresses", NULL }; const char **key_names = routes ? key_names_routes : key_names_addresses; char *gateway = NULL; GPtrArray *list; GDestroyNotify free_func; int i; if (routes) free_func = (GDestroyNotify) nm_ip_route_unref; else free_func = (GDestroyNotify) nm_ip_address_unref; list = g_ptr_array_new_with_free_func (free_func); for (i = -1; i < 1000; i++) { const char **key_basename; for (key_basename = key_names; *key_basename; key_basename++) { char *key_name; gpointer item; char options_key[128]; /* -1 means no suffix */ if (i >= 0) key_name = g_strdup_printf ("%s%d", *key_basename, i); else key_name = g_strdup (*key_basename); item = read_one_ip_address_or_route (info, key, setting_name, key_name, ipv6, routes, gateway ? NULL : &gateway, setting); if (item && routes) { nm_sprintf_buf (options_key, "%s_options", key_name); fill_route_attributes (info->keyfile, item, setting_name, options_key, ipv6 ? AF_INET6 : AF_INET); } g_free (key_name); if (info->error) { g_ptr_array_unref (list); g_free (gateway); return; } if (item) g_ptr_array_add (list, item); } } if (list->len >= 1) g_object_set (setting, key, list, NULL); if (gateway) { g_object_set (setting, "gateway", gateway, NULL); g_free (gateway); } g_ptr_array_unref (list); } static void ip4_dns_parser (KeyfileReaderInfo *info, NMSetting *setting, const char *key) { const char *setting_name = nm_setting_get_name (setting); GPtrArray *array; gsize length; char **list, **iter; int ret; list = nm_keyfile_plugin_kf_get_string_list (info->keyfile, setting_name, key, &length, NULL); if (!list || !g_strv_length (list)) return; array = g_ptr_array_sized_new (length + 1); for (iter = list; *iter; iter++) { guint32 addr; ret = inet_pton (AF_INET, *iter, &addr); if (ret <= 0) { if (!handle_warn (info, key, NM_KEYFILE_WARN_SEVERITY_WARN, _("ignoring invalid DNS server IPv4 address '%s'"), *iter)) { g_ptr_array_unref (array); g_strfreev (list); return; } continue; } g_ptr_array_add (array, *iter); } g_ptr_array_add (array, NULL); g_object_set (setting, key, array->pdata, NULL); g_ptr_array_unref (array); g_strfreev (list); } static void ip6_dns_parser (KeyfileReaderInfo *info, NMSetting *setting, const char *key) { const char *setting_name = nm_setting_get_name (setting); GPtrArray *array = NULL; gsize length; char **list, **iter; int ret; list = nm_keyfile_plugin_kf_get_string_list (info->keyfile, setting_name, key, &length, NULL); if (!list || !g_strv_length (list)) return; array = g_ptr_array_sized_new (length + 1); for (iter = list; *iter; iter++) { struct in6_addr addr; ret = inet_pton (AF_INET6, *iter, &addr); if (ret <= 0) { if (!handle_warn (info, key, NM_KEYFILE_WARN_SEVERITY_WARN, _("ignoring invalid DNS server IPv6 address '%s'"), *iter)) { g_ptr_array_unref (array); g_strfreev (list); return; } continue; } g_ptr_array_add (array, *iter); } g_ptr_array_add (array, NULL); g_object_set (setting, key, array->pdata, NULL); g_ptr_array_unref (array); g_strfreev (list); } static void ip6_addr_gen_mode_parser (KeyfileReaderInfo *info, NMSetting *setting, const char *key) { NMSettingIP6ConfigAddrGenMode addr_gen_mode; const char *setting_name = nm_setting_get_name (setting); gs_free char *s = NULL; s = nm_keyfile_plugin_kf_get_string (info->keyfile, setting_name, key, NULL); if (s) { if (!nm_utils_enum_from_str (nm_setting_ip6_config_addr_gen_mode_get_type (), s, (int *) &addr_gen_mode, NULL)) { handle_warn (info, key, NM_KEYFILE_WARN_SEVERITY_WARN, _("invalid option '%s', use one of [%s]"), s, "eui64,stable-privacy"); return; } } else addr_gen_mode = NM_SETTING_IP6_CONFIG_ADDR_GEN_MODE_EUI64; g_object_set (G_OBJECT (setting), key, (gint) addr_gen_mode, NULL); } static void mac_address_parser (KeyfileReaderInfo *info, NMSetting *setting, const char *key, gsize enforce_length, gboolean cloned_mac_addr) { const char *setting_name = nm_setting_get_name (setting); gs_free char *tmp_string = NULL; const char *p, *mac_str; gs_free guint8 *buf_arr = NULL; guint buf_len = 0; gsize length; tmp_string = nm_keyfile_plugin_kf_get_string (info->keyfile, setting_name, key, NULL); if ( cloned_mac_addr && NM_CLONED_MAC_IS_SPECIAL (tmp_string)) { mac_str = tmp_string; goto out; } if (tmp_string && tmp_string[0]) { /* Look for enough ':' characters to signify a MAC address */ guint i = 0; p = tmp_string; while (*p) { if (*p == ':') i++; p++; } if (enforce_length == 0 || enforce_length == i+1) { /* If we found enough it's probably a string-format MAC address */ buf_len = i + 1; buf_arr = g_new (guint8, buf_len); if (!nm_utils_hwaddr_aton (tmp_string, buf_arr, buf_len)) g_clear_pointer (&buf_arr, g_free); } } g_clear_pointer (&tmp_string, g_free); if (!buf_arr) { gs_free int *tmp_list = NULL; /* Old format; list of ints */ tmp_list = nm_keyfile_plugin_kf_get_integer_list (info->keyfile, setting_name, key, &length, NULL); if (length > 0 && (enforce_length == 0 || enforce_length == length)) { gsize i; buf_len = length; buf_arr = g_new (guint8, buf_len); for (i = 0; i < length; i++) { int val = tmp_list[i]; if (val < 0 || val > 255) { handle_warn (info, key, NM_KEYFILE_WARN_SEVERITY_WARN, _("ignoring invalid byte element '%d' (not between 0 and 255 inclusive)"), val); return; } buf_arr[i] = (guint8) val; } } } if (!buf_arr) { handle_warn (info, key, NM_KEYFILE_WARN_SEVERITY_WARN, _("ignoring invalid MAC address")); return; } tmp_string = nm_utils_hwaddr_ntoa (buf_arr, buf_len); mac_str = tmp_string; out: g_object_set (setting, key, mac_str, NULL); } static void mac_address_parser_ETHER (KeyfileReaderInfo *info, NMSetting *setting, const char *key) { mac_address_parser (info, setting, key, ETH_ALEN, FALSE); } static void mac_address_parser_ETHER_cloned (KeyfileReaderInfo *info, NMSetting *setting, const char *key) { mac_address_parser (info, setting, key, ETH_ALEN, TRUE); } static void mac_address_parser_INFINIBAND (KeyfileReaderInfo *info, NMSetting *setting, const char *key) { mac_address_parser (info, setting, key, INFINIBAND_ALEN, FALSE); } static void read_hash_of_string (GKeyFile *file, NMSetting *setting, const char *key) { gs_strfreev char **keys = NULL; const char *const*iter; const char *setting_name = nm_setting_get_name (setting); gboolean is_vpn; keys = nm_keyfile_plugin_kf_get_keys (file, setting_name, NULL, NULL); if (!keys || !*keys) return; if ( (is_vpn = NM_IS_SETTING_VPN (setting)) || NM_IS_SETTING_BOND (setting)) { for (iter = (const char *const*) keys; *iter; iter++) { gs_free char *to_free = NULL; gs_free char *value = NULL; const char *name; value = nm_keyfile_plugin_kf_get_string (file, setting_name, *iter, NULL); if (!value) continue; name = nm_keyfile_key_decode (*iter, &to_free); if (is_vpn) { /* Add any item that's not a class property to the data hash */ if (!g_object_class_find_property (G_OBJECT_GET_CLASS (setting), name)) nm_setting_vpn_add_data_item (NM_SETTING_VPN (setting), name, value); } else { if (strcmp (name, "interface-name")) nm_setting_bond_add_option (NM_SETTING_BOND (setting), name, value); } } return; } if (NM_IS_SETTING_USER (setting)) { gs_unref_hashtable GHashTable *data = NULL; data = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free); for (iter = (const char *const*) keys; *iter; iter++) { gs_free char *to_free = NULL; char *value = NULL; const char *name; value = nm_keyfile_plugin_kf_get_string (file, setting_name, *iter, NULL); if (!value) continue; name = nm_keyfile_key_decode (*iter, &to_free); g_hash_table_insert (data, g_steal_pointer (&to_free) ?: g_strdup (name), value); } g_object_set (setting, NM_SETTING_USER_DATA, data, NULL); } } static gsize unescape_semicolons (char *str) { gsize i, j; for (i = 0, j = 0; str[i]; ) { if (str[i] == '\\' && str[i+1] == ';') i++; str[j++] = str[i++];; } str[j] = '\0'; return j; } static GBytes * get_bytes (KeyfileReaderInfo *info, const char *setting_name, const char *key, gboolean zero_terminate, gboolean unescape_semicolon) { gs_free char *tmp_string = NULL; gboolean may_be_int_list = TRUE; gsize length; /* New format: just a string * Old format: integer list; e.g. 11;25;38; */ tmp_string = nm_keyfile_plugin_kf_get_string (info->keyfile, setting_name, key, NULL); if (!tmp_string) return NULL; /* if the string is empty, we return an empty GBytes array. * Note that for NM_SETTING_802_1X_PASSWORD_RAW both %NULL and * an empty GBytes are valid, and shall be destinguished. */ if (!tmp_string[0]) { /* note that even if @zero_terminate is TRUE, we return an empty * byte-array. The reason is that zero_terminate is there to terminate * *valid* strings. It's not there to terminated invalid (empty) strings. */ return g_bytes_new_take (tmp_string, 0); } for (length = 0; tmp_string[length]; length++) { const char ch = tmp_string[length]; if ( !g_ascii_isspace (ch) && !g_ascii_isdigit (ch) && ch != ';') { may_be_int_list = FALSE; length += strlen (&tmp_string[length]); break; } } /* Try to parse the string as a integer list. */ if (may_be_int_list && length > 0) { gs_free guint8 *bin_data = NULL; const char *const s = tmp_string; gsize i, d; const gsize BIN_DATA_LEN = (length / 2 + 3); bin_data = g_malloc (BIN_DATA_LEN); #define DIGIT(c) ((c) - '0') i = 0; d = 0; while (TRUE) { int n; /* leading whitespace */ while (g_ascii_isspace (s[i])) i++; if (s[i] == '\0') break; /* then expect 1 to 3 digits */ if (!g_ascii_isdigit (s[i])) { d = 0; break; } n = DIGIT (s[i]); i++; if (g_ascii_isdigit (s[i])) { n = 10 * n + DIGIT (s[i]); i++; if (g_ascii_isdigit (s[i])) { n = 10 * n + DIGIT (s[i]); i++; } } if (n > 255) { d = 0; break; } bin_data[d++] = n; nm_assert (d < BIN_DATA_LEN); /* allow whitespace after the digit. */ while (g_ascii_isspace (s[i])) i++; /* need a semicolon as separator. */ if (s[i] != ';') { d = 0; break; } i++; } #undef DIGIT /* Old format; list of ints. We already did a strict validation of the * string format before. We expect that this conversion cannot fail. */ if (d > 0) { /* note that @zero_terminate does not add a terminating '\0' to * binary data as an integer list. * * But we add a '\0' to the bin_data pointer, just to avoid somebody * (erronously!) reading the binary data as C-string. * * @d itself does not entail the '\0'. */ nm_assert (d + 1 <= BIN_DATA_LEN); bin_data = g_realloc (bin_data, d + 1); bin_data[d] = '\0'; return g_bytes_new_take (g_steal_pointer (&bin_data), d); } } /* Handle as a simple string (ie, new format) */ if (unescape_semicolon) length = unescape_semicolons (tmp_string); if (zero_terminate) length++; if (length == 0) return NULL; tmp_string = g_realloc (tmp_string, length + (zero_terminate ? 0 : 1)); return g_bytes_new_take (g_steal_pointer (&tmp_string), length); } static void ssid_parser (KeyfileReaderInfo *info, NMSetting *setting, const char *key) { const char *setting_name = nm_setting_get_name (setting); GBytes *bytes; bytes = get_bytes (info, setting_name, key, FALSE, TRUE); if (bytes) { g_object_set (setting, key, bytes, NULL); g_bytes_unref (bytes); } else if (!info->error) { handle_warn (info, key, NM_KEYFILE_WARN_SEVERITY_WARN, _("ignoring invalid SSID")); } } static void password_raw_parser (KeyfileReaderInfo *info, NMSetting *setting, const char *key) { const char *setting_name = nm_setting_get_name (setting); GBytes *bytes; bytes = get_bytes (info, setting_name, key, FALSE, TRUE); if (bytes) { g_object_set (setting, key, bytes, NULL); g_bytes_unref (bytes); } else if (!info->error) { handle_warn (info, key, NM_KEYFILE_WARN_SEVERITY_WARN, _("ignoring invalid raw password")); } } static char * get_cert_path (const char *base_dir, const guint8 *cert_path, gsize cert_path_len) { const char *base; char *p = NULL, *path, *tmp; g_return_val_if_fail (base_dir != NULL, NULL); g_return_val_if_fail (cert_path != NULL, NULL); base = path = g_malloc0 (cert_path_len + 1); memcpy (path, cert_path, cert_path_len); if (path[0] == '/') return path; p = strrchr (path, '/'); if (p) base = p + 1; tmp = g_build_path ("/", base_dir, base, NULL); g_free (path); return tmp; } static const char *certext[] = { ".pem", ".cert", ".crt", ".cer", ".p12", ".der", ".key" }; static gboolean has_cert_ext (const char *path) { int i; for (i = 0; i < G_N_ELEMENTS (certext); i++) { if (g_str_has_suffix (path, certext[i])) return TRUE; } return FALSE; } static gboolean handle_as_scheme (KeyfileReaderInfo *info, GBytes *bytes, NMSetting *setting, const char *key) { const char *data; gsize data_len, bin_len; data = g_bytes_get_data (bytes, &data_len); g_return_val_if_fail (data && data_len > 0, FALSE); /* to be a scheme, @data must be a zero terminated string, which is counted by @data_len */ if (data[data_len - 1] != '\0') return FALSE; data_len--; /* It's the PATH scheme, can just set plain data. * In this case, @data_len includes */ if ( data_len >= NM_STRLEN (NM_KEYFILE_CERT_SCHEME_PREFIX_PATH) && g_str_has_prefix (data, NM_KEYFILE_CERT_SCHEME_PREFIX_PATH)) { if (nm_setting_802_1x_check_cert_scheme (data, data_len + 1, NULL) == NM_SETTING_802_1X_CK_SCHEME_PATH) { const char *path = &data[NM_STRLEN (NM_KEYFILE_CERT_SCHEME_PREFIX_PATH)]; gs_free char *path_free = NULL; if (path[0] != '/') { /* we want to read absolute paths because we use keyfile as exchange * between different processes which might not have the same cwd. */ path = path_free = get_cert_path (info->base_dir, (const guint8 *) path, data_len - NM_STRLEN (NM_KEYFILE_CERT_SCHEME_PREFIX_PATH)); } g_object_set (setting, key, bytes, NULL); if (!g_file_test (path, G_FILE_TEST_EXISTS)) { handle_warn (info, key, NM_KEYFILE_WARN_SEVERITY_INFO_MISSING_FILE, _("certificate or key file '%s' does not exist"), path); } } else { handle_warn (info, key, NM_KEYFILE_WARN_SEVERITY_WARN, _("invalid key/cert value path \"%s\""), data); } return TRUE; } if ( data_len >= NM_STRLEN (NM_KEYFILE_CERT_SCHEME_PREFIX_PKCS11) && g_str_has_prefix (data, NM_KEYFILE_CERT_SCHEME_PREFIX_PKCS11)) { if (nm_setting_802_1x_check_cert_scheme (data, data_len + 1, NULL) == NM_SETTING_802_1X_CK_SCHEME_PKCS11) { g_object_set (setting, key, bytes, NULL); } else { handle_warn (info, key, NM_KEYFILE_WARN_SEVERITY_WARN, _("invalid PKCS#11 URI \"%s\""), data); } return TRUE; } if ( data_len > NM_STRLEN (NM_KEYFILE_CERT_SCHEME_PREFIX_BLOB) && g_str_has_prefix (data, NM_KEYFILE_CERT_SCHEME_PREFIX_BLOB)) { const char *cdata = data + NM_STRLEN (NM_KEYFILE_CERT_SCHEME_PREFIX_BLOB); guchar *bin; GBytes *bytes2; gsize i; gboolean valid_base64; data_len -= NM_STRLEN (NM_KEYFILE_CERT_SCHEME_PREFIX_BLOB); /* Let's be strict here. We expect valid base64, no funny stuff!! * We didn't write such invalid data ourselfes and refuse to read it as blob. */ if ((valid_base64 = (data_len % 4 == 0))) { for (i = 0; i < data_len; i++) { char c = cdata[i]; if (!( (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9') || (c == '+' || c == '/'))) { if (c != '=' || i < data_len - 2) valid_base64 = FALSE; else { for (; i < data_len; i++) { if (cdata[i] != '=') valid_base64 = FALSE; } } break; } } } if (!valid_base64) { handle_warn (info, key, NM_KEYFILE_WARN_SEVERITY_WARN, _("invalid key/cert value data:;base64, is not base64")); return TRUE; } bin = g_base64_decode (cdata, &bin_len); g_return_val_if_fail (bin_len > 0, FALSE); if (nm_setting_802_1x_check_cert_scheme (bin, bin_len, NULL) != NM_SETTING_802_1X_CK_SCHEME_BLOB) { /* The blob probably starts with "file://". Setting the cert data will confuse NMSetting8021x. * In fact this is a limitation of NMSetting8021x which does not support setting blobs that start * with file://. Just warn and return TRUE to signal that we ~handled~ the setting. */ g_free (bin); handle_warn (info, key, NM_KEYFILE_WARN_SEVERITY_WARN, _("invalid key/cert value data:;base64,file://")); } else { bytes2 = g_bytes_new_take (bin, bin_len); g_object_set (setting, key, bytes2, NULL); g_bytes_unref (bytes2); } return TRUE; } return FALSE; } char * nm_keyfile_detect_unqualified_path_scheme (const char *base_dir, gconstpointer pdata, gsize data_len, gboolean consider_exists, gboolean *out_exists) { const char *data = pdata; gboolean exists = FALSE; gboolean success = FALSE; gsize validate_len; char *path; GByteArray *tmp; g_return_val_if_fail (base_dir && base_dir[0] == '/', NULL); if (!pdata) return NULL; if (data_len == -1) data_len = strlen (data); if (data_len > 500 || data_len < 1) return NULL; /* If there's a trailing zero tell g_utf8_validate() to validate until the zero */ if (data[data_len - 1] == '\0') { /* setting it to -1, would mean we accept data to contain NUL characters before the * end. Don't accept any NUL in [0 .. data_len-1[ . */ validate_len = data_len - 1; } else validate_len = data_len; if ( validate_len == 0 || g_utf8_validate ((const char *) data, validate_len, NULL) == FALSE) return NULL; /* Might be a bare path without the file:// prefix; in that case * if it's an absolute path, use that, otherwise treat it as a * relative path to the current directory. */ path = get_cert_path (base_dir, (const guint8 *) data, data_len); if ( !memchr (data, '/', data_len) && !has_cert_ext (path)) { if (!consider_exists) goto out; exists = g_file_test (path, G_FILE_TEST_EXISTS); if (!exists) goto out; } else if (out_exists) exists = g_file_test (path, G_FILE_TEST_EXISTS); /* Construct the proper value as required for the PATH scheme */ tmp = g_byte_array_sized_new (strlen (NM_KEYFILE_CERT_SCHEME_PREFIX_PATH) + strlen (path) + 1); g_byte_array_append (tmp, (const guint8 *) NM_KEYFILE_CERT_SCHEME_PREFIX_PATH, strlen (NM_KEYFILE_CERT_SCHEME_PREFIX_PATH)); g_byte_array_append (tmp, (const guint8 *) path, strlen (path) + 1); if (nm_setting_802_1x_check_cert_scheme (tmp->data, tmp->len, NULL) == NM_SETTING_802_1X_CK_SCHEME_PATH) { g_free (path); path = (char *) g_byte_array_free (tmp, FALSE); /* when returning TRUE, we must also be sure that @data_len does not look like * the deprecated format of list of integers. With this implementation that is the * case, as long as @consider_exists is FALSE. */ success = TRUE; } else g_byte_array_unref (tmp); out: if (!success) { g_free (path); return NULL; } if (out_exists) *out_exists = exists; return path; } static gboolean handle_as_path (KeyfileReaderInfo *info, GBytes *bytes, NMSetting *setting, const char *key) { const guint8 *data; gsize data_len; char *path; gboolean exists = FALSE; GBytes *val; data = g_bytes_get_data (bytes, &data_len); path = nm_keyfile_detect_unqualified_path_scheme (info->base_dir, data, data_len, TRUE, &exists); if (!path) return FALSE; /* Construct the proper value as required for the PATH scheme */ val = g_bytes_new_take (path, strlen (path) + 1); g_object_set (setting, key, val, NULL); /* Warn if the certificate didn't exist */ if (!exists) { handle_warn (info, key, NM_KEYFILE_WARN_SEVERITY_INFO_MISSING_FILE, _("certificate or key file '%s' does not exist"), path); } g_bytes_unref (val); return TRUE; } static void cert_parser (KeyfileReaderInfo *info, NMSetting *setting, const char *key) { const char *setting_name = nm_setting_get_name (setting); gs_unref_bytes GBytes *bytes = NULL; gsize bin_len; const char *bin; bytes = get_bytes (info, setting_name, key, TRUE, FALSE); if (bytes) { /* Try as a path + scheme (ie, starts with "file://") */ if (handle_as_scheme (info, bytes, setting, key)) return; if (info->error) return; /* If not, it might be a plain path */ if (handle_as_path (info, bytes, setting, key)) return; if (info->error) return; bin = g_bytes_get_data (bytes, &bin_len); if (nm_setting_802_1x_check_cert_scheme (bin, bin_len, NULL) != NM_SETTING_802_1X_CK_SCHEME_BLOB) { /* The blob probably starts with "file://" but contains invalid characters for a path. * Setting the cert data will confuse NMSetting8021x. * In fact, NMSetting8021x does not support setting such binary data, so just warn and * continue. */ handle_warn (info, key, NM_KEYFILE_WARN_SEVERITY_WARN, _("invalid key/cert value is not a valid blob")); } else g_object_set (setting, key, bytes, NULL); } else if (!info->error) { handle_warn (info, key, NM_KEYFILE_WARN_SEVERITY_WARN, _("invalid key/cert value")); } } static void parity_parser (KeyfileReaderInfo *info, NMSetting *setting, const char *key) { const char *setting_name = nm_setting_get_name (setting); NMSettingSerialParity parity; int int_val; gs_free char *str_val = NULL; /* Keyfile traditionally stored this as the ASCII value for 'E', 'o', or 'n'. * We now accept either that or the (case-insensitive) character itself (but * still always write it the old way, for backward compatibility). */ int_val = nm_keyfile_plugin_kf_get_integer (info->keyfile, setting_name, key, NULL); if (!int_val) { str_val = nm_keyfile_plugin_kf_get_string (info->keyfile, setting_name, key, NULL); if (str_val) { if (str_val[0] && !str_val[1]) int_val = str_val[0]; else { /* This will hit the warning below */ int_val = 'X'; } } } if (!int_val) return; switch (int_val) { case 'E': case 'e': parity = NM_SETTING_SERIAL_PARITY_EVEN; break; case 'O': case 'o': parity = NM_SETTING_SERIAL_PARITY_ODD; break; case 'N': case 'n': parity = NM_SETTING_SERIAL_PARITY_NONE; break; default: handle_warn (info, key, NM_KEYFILE_WARN_SEVERITY_WARN, _("invalid parity value '%s'"), str_val ? str_val : ""); return; } g_object_set (setting, key, parity, NULL); } static void team_config_parser (KeyfileReaderInfo *info, NMSetting *setting, const char *key) { const char *setting_name = nm_setting_get_name (setting); gs_free char *conf = NULL; gs_free_error GError *error = NULL; conf = nm_keyfile_plugin_kf_get_string (info->keyfile, setting_name, key, NULL); if (conf && conf[0] && !nm_utils_is_json_object (conf, &error)) { handle_warn (info, key, NM_KEYFILE_WARN_SEVERITY_WARN, _("ignoring invalid team configuration: %s"), error->message); g_clear_pointer (&conf, g_free); } g_object_set (G_OBJECT (setting), key, conf, NULL); } static void qdisc_parser (KeyfileReaderInfo *info, NMSetting *setting, const char *key) { const char *setting_name = nm_setting_get_name (setting); GPtrArray *qdiscs; gs_strfreev gchar **keys = NULL; gsize n_keys = 0; int i; qdiscs = g_ptr_array_new_with_free_func ((GDestroyNotify) nm_tc_qdisc_unref); keys = nm_keyfile_plugin_kf_get_keys (info->keyfile, setting_name, &n_keys, NULL); if (!keys || n_keys == 0) return; for (i = 0; i < n_keys; i++) { NMTCQdisc *qdisc; const char *qdisc_parent; gs_free char *qdisc_rest = NULL; gs_free char *qdisc_str = NULL; gs_free_error GError *err = NULL; if (!g_str_has_prefix (keys[i], "qdisc.")) continue; qdisc_parent = keys[i] + sizeof ("qdisc.") - 1; qdisc_rest = nm_keyfile_plugin_kf_get_string (info->keyfile, setting_name, keys[i], NULL); qdisc_str = g_strdup_printf ("%s%s %s", _nm_utils_parse_tc_handle (qdisc_parent, NULL) != TC_H_UNSPEC ? "parent " : "", qdisc_parent, qdisc_rest); qdisc = nm_utils_tc_qdisc_from_str (qdisc_str, &err); if (!qdisc) { handle_warn (info, keys[i], NM_KEYFILE_WARN_SEVERITY_WARN, _("invalid qdisc: %s"), err->message); } else { g_ptr_array_add (qdiscs, qdisc); } } if (qdiscs->len >= 1) g_object_set (setting, key, qdiscs, NULL); g_ptr_array_unref (qdiscs); } static void tfilter_parser (KeyfileReaderInfo *info, NMSetting *setting, const char *key) { const char *setting_name = nm_setting_get_name (setting); GPtrArray *tfilters; gs_strfreev gchar **keys = NULL; gsize n_keys = 0; int i; tfilters = g_ptr_array_new_with_free_func ((GDestroyNotify) nm_tc_tfilter_unref); keys = nm_keyfile_plugin_kf_get_keys (info->keyfile, setting_name, &n_keys, NULL); if (!keys || n_keys == 0) return; for (i = 0; i < n_keys; i++) { NMTCTfilter *tfilter; const char *tfilter_parent; gs_free char *tfilter_rest = NULL; gs_free char *tfilter_str = NULL; gs_free_error GError *err = NULL; if (!g_str_has_prefix (keys[i], "tfilter.")) continue; tfilter_parent = keys[i] + sizeof ("tfilter.") - 1; tfilter_rest = nm_keyfile_plugin_kf_get_string (info->keyfile, setting_name, keys[i], NULL); tfilter_str = g_strdup_printf ("%s%s %s", _nm_utils_parse_tc_handle (tfilter_parent, NULL) != TC_H_UNSPEC ? "parent " : "", tfilter_parent, tfilter_rest); tfilter = nm_utils_tc_tfilter_from_str (tfilter_str, &err); if (!tfilter) { handle_warn (info, keys[i], NM_KEYFILE_WARN_SEVERITY_WARN, _("invalid tfilter: %s"), err->message); } else { g_ptr_array_add (tfilters, tfilter); } } if (tfilters->len >= 1) g_object_set (setting, key, tfilters, NULL); g_ptr_array_unref (tfilters); } typedef struct { const char *setting_name; const char *key; gboolean check_for_key; void (*parser) (KeyfileReaderInfo *info, NMSetting *setting, const char *key); } KeyParser; /* A table of keys that require further parsing/conversion because they are * stored in a format that can't be automatically read using the key's type. * i.e. IPv4 addresses, which are stored in NetworkManager as guint32, but are * stored in keyfiles as strings, eg "10.1.1.2" or IPv6 addresses stored * in struct in6_addr internally, but as string in keyfiles. */ static KeyParser key_parsers[] = { { NM_SETTING_CONNECTION_SETTING_NAME, NM_SETTING_CONNECTION_TYPE, TRUE, setting_alias_parser }, { NM_SETTING_BRIDGE_SETTING_NAME, NM_SETTING_BRIDGE_MAC_ADDRESS, TRUE, mac_address_parser_ETHER }, { NM_SETTING_IP4_CONFIG_SETTING_NAME, NM_SETTING_IP_CONFIG_ADDRESSES, FALSE, ip_address_or_route_parser }, { NM_SETTING_IP6_CONFIG_SETTING_NAME, NM_SETTING_IP_CONFIG_ADDRESSES, FALSE, ip_address_or_route_parser }, { NM_SETTING_IP4_CONFIG_SETTING_NAME, NM_SETTING_IP_CONFIG_ROUTES, FALSE, ip_address_or_route_parser }, { NM_SETTING_IP6_CONFIG_SETTING_NAME, NM_SETTING_IP_CONFIG_ROUTES, FALSE, ip_address_or_route_parser }, { NM_SETTING_IP4_CONFIG_SETTING_NAME, NM_SETTING_IP_CONFIG_DNS, FALSE, ip4_dns_parser }, { NM_SETTING_IP6_CONFIG_SETTING_NAME, NM_SETTING_IP_CONFIG_DNS, FALSE, ip6_dns_parser }, { NM_SETTING_IP6_CONFIG_SETTING_NAME, NM_SETTING_IP6_CONFIG_ADDR_GEN_MODE, FALSE, ip6_addr_gen_mode_parser }, { NM_SETTING_WIRED_SETTING_NAME, NM_SETTING_WIRED_MAC_ADDRESS, TRUE, mac_address_parser_ETHER }, { NM_SETTING_WIRED_SETTING_NAME, NM_SETTING_WIRED_CLONED_MAC_ADDRESS, TRUE, mac_address_parser_ETHER_cloned }, { NM_SETTING_WIRELESS_SETTING_NAME, NM_SETTING_WIRELESS_MAC_ADDRESS, TRUE, mac_address_parser_ETHER }, { NM_SETTING_WIRELESS_SETTING_NAME, NM_SETTING_WIRELESS_CLONED_MAC_ADDRESS, TRUE, mac_address_parser_ETHER_cloned }, { NM_SETTING_WIRELESS_SETTING_NAME, NM_SETTING_WIRELESS_BSSID, TRUE, mac_address_parser_ETHER }, { NM_SETTING_BLUETOOTH_SETTING_NAME, NM_SETTING_BLUETOOTH_BDADDR, TRUE, mac_address_parser_ETHER }, { NM_SETTING_INFINIBAND_SETTING_NAME, NM_SETTING_INFINIBAND_MAC_ADDRESS, TRUE, mac_address_parser_INFINIBAND }, { NM_SETTING_WIMAX_SETTING_NAME, NM_SETTING_WIMAX_MAC_ADDRESS, TRUE, mac_address_parser_ETHER }, { NM_SETTING_WIRELESS_SETTING_NAME, NM_SETTING_WIRELESS_SSID, TRUE, ssid_parser }, { NM_SETTING_802_1X_SETTING_NAME, NM_SETTING_802_1X_PASSWORD_RAW, TRUE, password_raw_parser }, { NM_SETTING_802_1X_SETTING_NAME, NM_SETTING_802_1X_CA_CERT, TRUE, cert_parser }, { NM_SETTING_802_1X_SETTING_NAME, NM_SETTING_802_1X_CLIENT_CERT, TRUE, cert_parser }, { NM_SETTING_802_1X_SETTING_NAME, NM_SETTING_802_1X_PRIVATE_KEY, TRUE, cert_parser }, { NM_SETTING_802_1X_SETTING_NAME, NM_SETTING_802_1X_PHASE2_CA_CERT, TRUE, cert_parser }, { NM_SETTING_802_1X_SETTING_NAME, NM_SETTING_802_1X_PHASE2_CLIENT_CERT, TRUE, cert_parser }, { NM_SETTING_802_1X_SETTING_NAME, NM_SETTING_802_1X_PHASE2_PRIVATE_KEY, TRUE, cert_parser }, { NM_SETTING_SERIAL_SETTING_NAME, NM_SETTING_SERIAL_PARITY, TRUE, parity_parser }, { NM_SETTING_TEAM_SETTING_NAME, NM_SETTING_TEAM_CONFIG, TRUE, team_config_parser }, { NM_SETTING_TEAM_PORT_SETTING_NAME, NM_SETTING_TEAM_CONFIG, TRUE, team_config_parser }, { NM_SETTING_TC_CONFIG_SETTING_NAME, NM_SETTING_TC_CONFIG_QDISCS, FALSE, qdisc_parser }, { NM_SETTING_TC_CONFIG_SETTING_NAME, NM_SETTING_TC_CONFIG_TFILTERS, FALSE, tfilter_parser }, { NULL, NULL, FALSE } }; static void set_default_for_missing_key (NMSetting *setting, const char *property) { /* Set a value different from the default value of the property's spec */ } static void read_one_setting_value (NMSetting *setting, const char *key, const GValue *value, GParamFlags flags, gpointer user_data) { KeyfileReaderInfo *info = user_data; GKeyFile *keyfile = info->keyfile; const char *setting_name; int errsv; GType type; gs_free_error GError *err = NULL; gboolean check_for_key = TRUE; KeyParser *parser = &key_parsers[0]; if (info->error) return; /* Property is not writable */ if (!(flags & G_PARAM_WRITABLE)) return; /* Setting name gets picked up from the keyfile's section name instead */ if (!strcmp (key, NM_SETTING_NAME)) return; /* Don't read the NMSettingConnection object's 'read-only' property */ if ( NM_IS_SETTING_CONNECTION (setting) && !strcmp (key, NM_SETTING_CONNECTION_READ_ONLY)) return; if ( ( NM_IS_SETTING_TEAM (setting) || NM_IS_SETTING_TEAM_PORT (setting)) && !NM_IN_STRSET (key, NM_SETTING_TEAM_CONFIG)) { /* silently ignore all team properties (except "config"). */ return; } setting_name = nm_setting_get_name (setting); /* Look through the list of handlers for non-standard format key values */ while (parser->setting_name) { if (!strcmp (parser->setting_name, setting_name) && !strcmp (parser->key, key)) { check_for_key = parser->check_for_key; break; } parser++; } if (NM_IS_SETTING_VPN (setting)) check_for_key = FALSE; else if (NM_IS_SETTING_USER (setting)) check_for_key = FALSE; else if (NM_IS_SETTING_BOND (setting)) check_for_key = FALSE; /* Check for the exact key in the GKeyFile if required. Most setting * properties map 1:1 to a key in the GKeyFile, but for those properties * like IP addresses and routes where more than one value is actually * encoded by the setting property, this won't be true. */ if (check_for_key && !nm_keyfile_plugin_kf_has_key (keyfile, setting_name, key, &err)) { /* Key doesn't exist or an error ocurred, thus nothing to do. */ if (err) { if (!handle_warn (info, key, NM_KEYFILE_WARN_SEVERITY_WARN, _("error loading setting value: %s"), err->message)) goto out_error; } /* Allow default values different than in property spec */ set_default_for_missing_key (setting, key); return; } /* If there's a custom parser for this key, handle that before the generic * parsers below. */ if (parser->setting_name) { (*parser->parser) (info, setting, key); return; } type = G_VALUE_TYPE (value); if (type == G_TYPE_STRING) { char *str_val; str_val = nm_keyfile_plugin_kf_get_string (keyfile, setting_name, key, NULL); g_object_set (setting, key, str_val, NULL); g_free (str_val); } else if (type == G_TYPE_UINT) { int int_val; int_val = nm_keyfile_plugin_kf_get_integer (keyfile, setting_name, key, NULL); if (int_val < 0) { if (!handle_warn (info, key, NM_KEYFILE_WARN_SEVERITY_WARN, _("invalid negative value (%i)"), int_val)) goto out_error; } g_object_set (setting, key, int_val, NULL); } else if (type == G_TYPE_INT) { int int_val; int_val = nm_keyfile_plugin_kf_get_integer (keyfile, setting_name, key, NULL); g_object_set (setting, key, int_val, NULL); } else if (type == G_TYPE_BOOLEAN) { gboolean bool_val; bool_val = nm_keyfile_plugin_kf_get_boolean (keyfile, setting_name, key, NULL); g_object_set (setting, key, bool_val, NULL); } else if (type == G_TYPE_CHAR) { int int_val; int_val = nm_keyfile_plugin_kf_get_integer (keyfile, setting_name, key, NULL); if (int_val < G_MININT8 || int_val > G_MAXINT8) { if (!handle_warn (info, key, NM_KEYFILE_WARN_SEVERITY_WARN, _("invalid char value (%i)"), int_val)) goto out_error; } g_object_set (setting, key, int_val, NULL); } else if (type == G_TYPE_UINT64) { char *tmp_str; guint64 uint_val; tmp_str = nm_keyfile_plugin_kf_get_value (keyfile, setting_name, key, NULL); uint_val = g_ascii_strtoull (tmp_str, NULL, 10); g_free (tmp_str); g_object_set (setting, key, uint_val, NULL); } else if (type == G_TYPE_INT64) { gs_free char *tmp_str = NULL; gint64 int_val; tmp_str = nm_keyfile_plugin_kf_get_value (keyfile, setting_name, key, NULL); int_val = _nm_utils_ascii_str_to_int64 (tmp_str, 10, G_MININT64, G_MAXINT64, 0); errsv = errno; if (errsv) { if (!handle_warn (info, key, NM_KEYFILE_WARN_SEVERITY_WARN, _("invalid int64 value (%s)"), tmp_str)) goto out_error; } else g_object_set (setting, key, int_val, NULL); } else if (type == G_TYPE_BYTES) { gint *tmp; GByteArray *array; GBytes *bytes; gsize length; int i; gboolean already_warned = FALSE; tmp = nm_keyfile_plugin_kf_get_integer_list (keyfile, setting_name, key, &length, NULL); array = g_byte_array_sized_new (length); for (i = 0; i < length; i++) { int val = tmp[i]; unsigned char v = (unsigned char) (val & 0xFF); if (val < 0 || val > 255) { if ( !already_warned && !handle_warn (info, key, NM_KEYFILE_WARN_SEVERITY_WARN, _("ignoring invalid byte element '%d' (not between 0 and 255 inclusive)"), val)) { g_byte_array_unref (array); g_free (tmp); goto out_error; } already_warned = TRUE; } else g_byte_array_append (array, (const unsigned char *) &v, sizeof (v)); } bytes = g_byte_array_free_to_bytes (array); g_object_set (setting, key, bytes, NULL); g_bytes_unref (bytes); g_free (tmp); } else if (type == G_TYPE_STRV) { gchar **sa; gsize length; sa = nm_keyfile_plugin_kf_get_string_list (keyfile, setting_name, key, &length, NULL); g_object_set (setting, key, sa, NULL); g_strfreev (sa); } else if (type == G_TYPE_HASH_TABLE) { read_hash_of_string (keyfile, setting, key); } else if (type == G_TYPE_ARRAY) { read_array_of_uint (keyfile, setting, key); } else if (G_VALUE_HOLDS_FLAGS (value)) { guint64 uint_val; /* Flags are guint but GKeyFile has no uint reader, just uint64 */ uint_val = nm_keyfile_plugin_kf_get_uint64 (keyfile, setting_name, key, &err); if (!err) { if (uint_val <= G_MAXUINT) g_object_set (setting, key, (guint) uint_val, NULL); else { if (!handle_warn (info, key, NM_KEYFILE_WARN_SEVERITY_WARN, _("too large FLAGS property '%s' (%llu)"), G_VALUE_TYPE_NAME (value), (unsigned long long) uint_val)) goto out_error; } } } else if (G_VALUE_HOLDS_ENUM (value)) { gint int_val; int_val = nm_keyfile_plugin_kf_get_integer (keyfile, setting_name, key, &err); if (!err) g_object_set (setting, key, (gint) int_val, NULL); } else { if (!handle_warn (info, key, NM_KEYFILE_WARN_SEVERITY_WARN, _("unhandled setting property type '%s'"), G_VALUE_TYPE_NAME (value))) goto out_error; } out_error: return; } static NMSetting * read_setting (KeyfileReaderInfo *info) { const char *alias; GType type; alias = nm_keyfile_plugin_get_setting_name_for_alias (info->group); if (!alias) alias = info->group; type = nm_setting_lookup_type (alias); if (type) { NMSetting *setting = g_object_new (type, NULL); info->setting = setting; nm_setting_enumerate_values (setting, read_one_setting_value, info); info->setting = NULL; if (!info->error) return setting; g_object_unref (setting); } else { handle_warn (info, NULL, NM_KEYFILE_WARN_SEVERITY_WARN, _("invalid setting name '%s'"), info->group); } return NULL; } static void read_vpn_secrets (KeyfileReaderInfo *info, NMSettingVpn *s_vpn) { char **keys, **iter; keys = nm_keyfile_plugin_kf_get_keys (info->keyfile, NM_KEYFILE_GROUP_VPN_SECRETS, NULL, NULL); for (iter = keys; *iter; iter++) { char *secret; secret = nm_keyfile_plugin_kf_get_string (info->keyfile, NM_KEYFILE_GROUP_VPN_SECRETS, *iter, NULL); if (secret) { nm_setting_vpn_add_secret (s_vpn, *iter, secret); g_free (secret); } } g_strfreev (keys); } /** * nm_keyfile_read: * @keyfile: the keyfile from which to create the connection * @keyfile_name: keyfile allows missing connection id and uuid * and NetworkManager will create those when reading a connection * from file. By providing a filename you can reproduce that behavior, * but of course, it can only recreate the same UUID if you provide the * same filename as NetworkManager core daemon would. * @keyfile_name has only a relevance for setting the id or uuid if it * is missing and as fallback for @base_dir. * @base_dir: when reading certificates from files with relative name, * the relative path is made absolute using @base_dir. * If @base_dir is missing, first try to get the pathname from @keyfile_name * (if it is given as absolute path). As last, fallback to the current path. * @handler: read handler * @user_data: user data for read handler * @error: error * * Tries to create a NMConnection from a keyfile. The resulting keyfile is * not normalized and might not even verify. * * Returns: (transfer full): on success, returns the created connection. */ NMConnection * nm_keyfile_read (GKeyFile *keyfile, const char *keyfile_name, const char *base_dir, NMKeyfileReadHandler handler, void *user_data, GError **error) { NMConnection *connection = NULL; NMSettingConnection *s_con; NMSetting *setting; gchar **groups; gsize length; int i; gboolean vpn_secrets = FALSE; KeyfileReaderInfo info = { 0 }; gs_free char *base_dir_free = NULL; g_return_val_if_fail (keyfile, NULL); g_return_val_if_fail (!error || !*error, NULL); if (!base_dir) { /* basedir is not given. Prefer it from the keyfile_name */ if (keyfile_name && keyfile_name[0] == '/') { base_dir = base_dir_free = g_path_get_dirname (keyfile_name); } else { /* if keyfile is not given or not an absolute path, fallback * to current working directory. */ base_dir = base_dir_free = g_get_current_dir (); } } else g_return_val_if_fail ("/", NULL); connection = nm_simple_connection_new (); info.connection = connection; info.keyfile = (GKeyFile *) keyfile; info.base_dir = base_dir; info.handler = handler; info.user_data = user_data; groups = g_key_file_get_groups (keyfile, &length); if (!groups) length = 0; for (i = 0; i < length; i++) { /* Only read out secrets when needed */ if (!strcmp (groups[i], NM_KEYFILE_GROUP_VPN_SECRETS)) { vpn_secrets = TRUE; continue; } info.group = groups[i]; setting = read_setting (&info); info.group = NULL; if (info.error) goto out_error; if (setting) nm_connection_add_setting (connection, setting); } g_strfreev (groups); s_con = nm_connection_get_setting_connection (connection); if (!s_con) { s_con = NM_SETTING_CONNECTION (nm_setting_connection_new ()); nm_connection_add_setting (connection, NM_SETTING (s_con)); } /* Make sure that we have 'id' even if not explictly specified in the keyfile */ if ( keyfile_name && !nm_setting_connection_get_id (s_con)) { char *base_name; base_name = g_path_get_basename (keyfile_name); g_object_set (s_con, NM_SETTING_CONNECTION_ID, base_name, NULL); g_free (base_name); } /* Make sure that we have 'uuid' even if not explictly specified in the keyfile */ if ( keyfile_name && !nm_setting_connection_get_uuid (s_con)) { char *hashed_uuid; hashed_uuid = _nm_utils_uuid_generate_from_strings ("keyfile", keyfile_name, NULL); g_object_set (s_con, NM_SETTING_CONNECTION_UUID, hashed_uuid, NULL); g_free (hashed_uuid); } /* Make sure that we have 'interface-name' even if it was specified in the * "wrong" (ie, deprecated) group. */ if ( !nm_setting_connection_get_interface_name (s_con) && nm_setting_connection_get_connection_type (s_con)) { char *interface_name; interface_name = g_key_file_get_string (keyfile, nm_setting_connection_get_connection_type (s_con), "interface-name", NULL); if (interface_name) { g_object_set (s_con, NM_SETTING_CONNECTION_INTERFACE_NAME, interface_name, NULL); g_free (interface_name); } } /* Handle vpn secrets after the 'vpn' setting was read */ if (vpn_secrets) { NMSettingVpn *s_vpn; s_vpn = nm_connection_get_setting_vpn (connection); if (s_vpn) { read_vpn_secrets (&info, s_vpn); if (info.error) goto out_error; } } return connection; out_error: g_propagate_error (error, info.error); g_free (connection); return NULL; }