keyfile: let keyfile writer serialize setting with all default values
It's important whether a setting is present or not. Keyfile writer omits properties that have a default value, that means, if the setting has all-default values, it would be dropped. For [proxy] that doesn't really matter, because we tend to normalize it back. For some settings it matters: $ nmcli connection add type bluetooth con-name bt autoconnect no bluetooth.type dun bluetooth.bdaddr aa:bb:cc:dd:ee:ff gsm.apn a Connection 'bt' (652cabd8-d350-4246-a6f3-3dc17eeb028f) successfully added. $ nmcli connection modify bt gsm.apn '' When storing this to keyfile, the [gsm] section was dropped (server-side) and we fail an nm_assert() (omitted from the example output below). <error> [1566732645.9845] BUG: failure to normalized profile that we just wrote to disk: bluetooth: 'dun' connection requires 'gsm' or 'cdma' setting <trace> [1566732645.9846] keyfile: commit: "/etc/NetworkManager/system-connections/bt.nmconnection": profile 652cabd8-d350-4246-a6f3-3dc17eeb028f (bt) written <trace> [1566732645.9846] settings: update[652cabd8-d350-4246-a6f3-3dc17eeb028f]: update-from-dbus: update profile "bt" <trace> [1566732645.9849] settings: storage[652cabd8-d350-4246-a6f3-3dc17eeb028f,3e504752a4a78fb3/keyfile]: change event with connection "bt" (file "/etc/NetworkManager/system-connections/> <trace> [1566732645.9849] settings: update[652cabd8-d350-4246-a6f3-3dc17eeb028f]: updating connection "bt" (3e504752a4a78fb3/keyfile) <debug> [1566732645.9857] ++ connection 'update connection' (0x7f7918003340/NMSimpleConnection/"bluetooth" < 0x55e1c52480e0/NMSimpleConnection/"bluetooth") [/org/freedesktop/NetworkManager> <debug> [1566732645.9857] ++ gsm [ 0x55e1c5276f80 < 0x55e1c53205f0 ] <debug> [1566732645.9858] ++ gsm.apn < 'a' Of course, after reload the connection on disk is no loner valid. Keyfile writer wrote an invalid setting. # nmcli connection reload Logfile: <warn> [1566732775.4920] keyfile: load: "/etc/NetworkManager/system-connections/bt.nmconnection": failed to load connection: invalid connection: bluetooth: 'dun' connection requires 'gsm' or 'cdma' setting ... <trace> [1566732775.5432] settings: update[652cabd8-d350-4246-a6f3-3dc17eeb028f]: delete connection "bt" (3e504752a4a78fb3/keyfile) <debug> [1566732775.5434] Deleting secrets for connection /org/freedesktop/NetworkManager/Settings (bt) <trace> [1566732775.5436] dbus-object[9a402fbe14c8d975]: unexport: "/org/freedesktop/NetworkManager/Settings/55"
This commit is contained in:
@@ -2935,8 +2935,9 @@ _parse_info_find (NMSetting *setting,
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if (!pis)
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continue;
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if (!pis->properties)
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continue;
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g_assert (pis->properties);
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g_assert (pis->properties[0]);
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for (j = 0; pis->properties[j]; j++) {
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const ParseInfoProperty *pip0;
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@@ -3874,9 +3875,13 @@ nm_keyfile_write (NMConnection *connection,
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for (i = 0; i < n_settings; i++) {
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const NMSettInfoSetting *sett_info;
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NMSetting *setting = settings[i];
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const char *setting_name;
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const char *setting_alias;
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sett_info = _nm_setting_class_get_sett_info (NM_SETTING_GET_CLASS (setting));
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setting_name = sett_info->setting_class->setting_info->setting_name;
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if (sett_info->detail.gendata_info) {
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guint k, n_keys;
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const char *const*keys;
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@@ -3886,7 +3891,6 @@ nm_keyfile_write (NMConnection *connection,
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n_keys = _nm_setting_gendata_get_all (setting, &keys, NULL);
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if (n_keys > 0) {
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const char *setting_name = sett_info->setting_class->setting_info->setting_name;
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GHashTable *h = _nm_setting_gendata_hash (setting, FALSE);
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for (k = 0; k < n_keys; k++) {
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@@ -3926,6 +3930,18 @@ nm_keyfile_write (NMConnection *connection,
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goto out_with_info_error;
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}
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setting_alias = nm_keyfile_plugin_get_alias_for_setting_name (setting_name);
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if ( ( setting_alias
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&& g_key_file_has_group (info.keyfile, setting_alias))
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|| g_key_file_has_group (info.keyfile, setting_name)) {
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/* we have a section for the setting. Nothing to do. */
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} else {
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/* ensure the group is present. There is no API for that, so add and remove
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* a dummy key. */
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g_key_file_set_value (info.keyfile, setting_alias ?: setting_name, ".X", "1");
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g_key_file_remove_key (info.keyfile, setting_alias ?: setting_name, ".X", NULL);
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}
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nm_assert (!info.error);
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}
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@@ -2581,7 +2581,7 @@ static void
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test_roundtrip_conversion (gconstpointer test_data)
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{
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const int MODE = GPOINTER_TO_INT (test_data);
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const char *ID= nm_sprintf_bufa (100, "roundtip-conversion-%d", MODE);
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const char *ID= nm_sprintf_bufa (100, "roundtrip-conversion-%d", MODE);
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const char *UUID= "63376701-b61e-4318-bf7e-664a1c1eeaab";
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const char *INTERFACE_NAME = nm_sprintf_bufa (100, "ifname%d", MODE);
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guint32 ETH_MTU = nmtst_rand_select ((guint32) 0u,
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@@ -2663,6 +2663,8 @@ test_roundtrip_conversion (gconstpointer test_data)
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"addr-gen-mode=stable-privacy\n"
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"dns-search=\n"
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"method=auto\n"
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"\n"
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"[proxy]\n"
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"",
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ID,
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UUID,
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@@ -2722,6 +2724,8 @@ test_roundtrip_conversion (gconstpointer test_data)
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"interface-name=%s\n"
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"permissions=\n"
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"\n"
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"[wireguard]\n"
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"\n"
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"[ipv4]\n"
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"dns-search=\n"
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"method=disabled\n"
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@@ -2730,6 +2734,8 @@ test_roundtrip_conversion (gconstpointer test_data)
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"addr-gen-mode=stable-privacy\n"
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"dns-search=\n"
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"method=ignore\n"
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"\n"
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"[proxy]\n"
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"",
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ID,
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UUID,
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@@ -2770,7 +2776,8 @@ test_roundtrip_conversion (gconstpointer test_data)
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"type=wireguard\n"
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"interface-name=%s\n"
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"permissions=\n"
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"%s" /* [wireguard] */
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"\n"
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"[wireguard]\n"
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"%s" /* fwmark */
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"%s" /* listen-port */
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"%s" /* private-key-flags */
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@@ -2785,17 +2792,12 @@ test_roundtrip_conversion (gconstpointer test_data)
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"addr-gen-mode=stable-privacy\n"
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"dns-search=\n"
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"method=ignore\n"
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"\n"
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"[proxy]\n"
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"",
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ID,
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UUID,
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INTERFACE_NAME,
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( ( (WG_FWMARK != 0)
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|| (WG_LISTEN_PORT != 0)
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|| (WG_PRIVATE_KEY_FLAGS != NM_SETTING_SECRET_FLAG_NONE)
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|| ( WG_PRIVATE_KEY
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&& WG_PRIVATE_KEY_FLAGS == NM_SETTING_SECRET_FLAG_NONE))
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? "\n[wireguard]\n"
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: ""),
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( (WG_FWMARK != 0)
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? nm_sprintf_bufa (100, "fwmark=%u\n", WG_FWMARK)
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: ""),
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@@ -2887,6 +2889,8 @@ test_roundtrip_conversion (gconstpointer test_data)
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"routing-rule1=priority 1 from ::/0 table 1000\n"
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"routing-rule2=priority 2 from 1:2:3:b::/65 table 1001\n"
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"routing-rule3=priority 3 from 1:2:3:c::/66 table 1002\n"
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"\n"
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"[proxy]\n"
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"",
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ID,
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UUID,
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@@ -3309,10 +3313,8 @@ test_empty_setting (void)
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kf = nm_keyfile_write (con, NULL, NULL, &error);
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nmtst_assert_success (kf, error);
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/* the [gsm] setting was lost because it only has default values.
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* As a result, the connection also became invalid. */
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g_assert (!g_key_file_has_group (kf, "gsm"));
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g_assert (g_key_file_has_group (kf, "gsm"));
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g_assert_cmpint (nmtst_keyfile_get_num_keys (kf, "gsm"), ==, 0);
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con2 = nm_keyfile_read (kf,
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"/ignored/current/working/directory/for/loading/relative/paths",
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@@ -3321,9 +3323,9 @@ test_empty_setting (void)
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&error);
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nmtst_assert_success (con2, error);
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g_assert (!nm_connection_get_setting (con2, NM_TYPE_SETTING_GSM));
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g_assert (nm_connection_get_setting (con2, NM_TYPE_SETTING_GSM));
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nmtst_assert_connection_unnormalizable (con2, NM_CONNECTION_ERROR, NM_CONNECTION_ERROR_INVALID_SETTING);
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nmtst_assert_connection_verifies_without_normalization (con2);
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}
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/*****************************************************************************/
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