/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */ /* * Copyright (C) 2017 Red Hat * * 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., 59 Temple Place - Suite 330, Boston, MA * 02111-1307, USA. */ #include "config.h" #include "backends/meta-monitor-config-store.h" #include #include #include "backends/meta-monitor-config-manager.h" #include "backends/meta-monitor-config-migration.h" #define MONITORS_CONFIG_XML_FORMAT_VERSION 2 #define QUOTE1(a) #a #define QUOTE(a) QUOTE1(a) /* * Example configuration: * * * * * 0 * 0 * 1 * * * LVDS1 * Vendor A * Product A * Serial A * * * 1920 * 1080 * 60.049972534179688 * interlace * * * * right * no * * yes * no * * * 1920 * 1080 * * * LVDS2 * Vendor B * Product B * Serial B * * * 1920 * 1080 * 60.049972534179688 * * yes * * yes * * * * LVDS3 * Vendor C * Product C * Serial C * * * * * */ enum { PROP_0, PROP_MONITOR_MANAGER, PROP_LAST }; static GParamSpec *obj_props[PROP_LAST]; struct _MetaMonitorConfigStore { GObject parent; MetaMonitorManager *monitor_manager; GHashTable *configs; GCancellable *save_cancellable; GFile *user_file; GFile *custom_read_file; GFile *custom_write_file; gboolean has_stores_policy; GList *stores_policy; gboolean has_dbus_policy; MetaMonitorConfigPolicy policy; }; #define META_MONITOR_CONFIG_STORE_ERROR (meta_monitor_config_store_error_quark ()) static GQuark meta_monitor_config_store_error_quark (void); enum { META_MONITOR_CONFIG_STORE_ERROR_NEEDS_MIGRATION }; G_DEFINE_QUARK (meta-monitor-config-store-error-quark, meta_monitor_config_store_error) typedef enum { STATE_INITIAL, STATE_UNKNOWN, STATE_MONITORS, STATE_CONFIGURATION, STATE_MIGRATED, STATE_LOGICAL_MONITOR, STATE_LOGICAL_MONITOR_X, STATE_LOGICAL_MONITOR_Y, STATE_LOGICAL_MONITOR_PRIMARY, STATE_LOGICAL_MONITOR_PRESENTATION, STATE_LOGICAL_MONITOR_SCALE, STATE_TRANSFORM, STATE_TRANSFORM_ROTATION, STATE_TRANSFORM_FLIPPED, STATE_MONITOR, STATE_MONITOR_SPEC, STATE_MONITOR_SPEC_CONNECTOR, STATE_MONITOR_SPEC_VENDOR, STATE_MONITOR_SPEC_PRODUCT, STATE_MONITOR_SPEC_SERIAL, STATE_MONITOR_MODE, STATE_MONITOR_MODE_WIDTH, STATE_MONITOR_MODE_HEIGHT, STATE_MONITOR_MODE_RATE, STATE_MONITOR_MODE_FLAG, STATE_MONITOR_UNDERSCANNING, STATE_DISABLED, STATE_POLICY, STATE_STORES, STATE_STORE, STATE_DBUS, } ParserState; typedef struct { ParserState state; MetaMonitorConfigStore *config_store; GFile *file; GHashTable *pending_configs; ParserState monitor_spec_parent_state; gboolean current_was_migrated; GList *current_logical_monitor_configs; MetaMonitorSpec *current_monitor_spec; gboolean current_transform_flipped; MetaMonitorTransform current_transform; MetaMonitorModeSpec *current_monitor_mode_spec; MetaMonitorConfig *current_monitor_config; MetaLogicalMonitorConfig *current_logical_monitor_config; GList *current_disabled_monitor_specs; gboolean seen_policy; gboolean seen_stores; gboolean seen_dbus; MetaConfigStore pending_store; GList *stores; gboolean enable_dbus_set; gboolean enable_dbus; ParserState unknown_state_root; int unknown_level; MetaMonitorsConfigFlag extra_config_flags; } ConfigParser; G_DEFINE_TYPE (MetaMonitorConfigStore, meta_monitor_config_store, G_TYPE_OBJECT) static gboolean text_equals (const char *text, int len, const char *expect) { if (strlen (expect) != len) return FALSE; return strncmp (text, expect, len) == 0; } static void enter_unknown_element (ConfigParser *parser, const char *element_name, const char *root_element_name, ParserState root_state) { parser->state = STATE_UNKNOWN; parser->unknown_level = 1; parser->unknown_state_root = root_state; g_warning ("Unknown element <%s> under <%s>, ignoring", element_name, root_element_name); } static void handle_start_element (GMarkupParseContext *context, const char *element_name, const char **attribute_names, const char **attribute_values, gpointer user_data, GError **error) { ConfigParser *parser = user_data; switch (parser->state) { case STATE_INITIAL: { char *version; if (!g_str_equal (element_name, "monitors")) { g_set_error (error, G_MARKUP_ERROR, G_MARKUP_ERROR_UNKNOWN_ELEMENT, "Invalid document element '%s'", element_name); return; } if (!g_markup_collect_attributes (element_name, attribute_names, attribute_values, error, G_MARKUP_COLLECT_STRING, "version", &version, G_MARKUP_COLLECT_INVALID)) { g_set_error (error, G_MARKUP_ERROR, G_MARKUP_ERROR_INVALID_CONTENT, "Missing config file format version"); } if (g_str_equal (version, "1")) { g_set_error_literal (error, META_MONITOR_CONFIG_STORE_ERROR, META_MONITOR_CONFIG_STORE_ERROR_NEEDS_MIGRATION, "monitors.xml has the old format"); return; } if (!g_str_equal (version, QUOTE (MONITORS_CONFIG_XML_FORMAT_VERSION))) { g_set_error (error, G_MARKUP_ERROR, G_MARKUP_ERROR_INVALID_CONTENT, "Invalid or unsupported version '%s'", version); return; } parser->state = STATE_MONITORS; return; } case STATE_MONITORS: { if (g_str_equal (element_name, "configuration")) { parser->state = STATE_CONFIGURATION; parser->current_was_migrated = FALSE; } else if (g_str_equal (element_name, "policy")) { if (parser->seen_policy) { g_set_error (error, G_MARKUP_ERROR, G_MARKUP_ERROR_UNKNOWN_ELEMENT, "Multiple policy definitions"); return; } parser->seen_policy = TRUE; parser->state = STATE_POLICY; } else { enter_unknown_element (parser, element_name, "monitors", STATE_MONITORS); return; } return; } case STATE_UNKNOWN: { parser->unknown_level++; return; } case STATE_CONFIGURATION: { if (g_str_equal (element_name, "logicalmonitor")) { parser->current_logical_monitor_config = g_new0 (MetaLogicalMonitorConfig, 1); parser->state = STATE_LOGICAL_MONITOR; } else if (g_str_equal (element_name, "migrated")) { parser->current_was_migrated = TRUE; parser->state = STATE_MIGRATED; } else if (g_str_equal (element_name, "disabled")) { parser->state = STATE_DISABLED; } else { enter_unknown_element (parser, element_name, "configuration", STATE_CONFIGURATION); } return; } case STATE_MIGRATED: { g_set_error (error, G_MARKUP_ERROR, G_MARKUP_ERROR_UNKNOWN_ELEMENT, "Unexpected element '%s'", element_name); return; } case STATE_LOGICAL_MONITOR: { if (g_str_equal (element_name, "x")) { parser->state = STATE_LOGICAL_MONITOR_X; } else if (g_str_equal (element_name, "y")) { parser->state = STATE_LOGICAL_MONITOR_Y; } else if (g_str_equal (element_name, "scale")) { parser->state = STATE_LOGICAL_MONITOR_SCALE; } else if (g_str_equal (element_name, "primary")) { parser->state = STATE_LOGICAL_MONITOR_PRIMARY; } else if (g_str_equal (element_name, "presentation")) { parser->state = STATE_LOGICAL_MONITOR_PRESENTATION; } else if (g_str_equal (element_name, "transform")) { parser->state = STATE_TRANSFORM; } else if (g_str_equal (element_name, "monitor")) { parser->current_monitor_config = g_new0 (MetaMonitorConfig, 1); parser->state = STATE_MONITOR; } else { enter_unknown_element (parser, element_name, "logicalmonitor", STATE_LOGICAL_MONITOR); } return; } case STATE_LOGICAL_MONITOR_X: case STATE_LOGICAL_MONITOR_Y: case STATE_LOGICAL_MONITOR_SCALE: case STATE_LOGICAL_MONITOR_PRIMARY: case STATE_LOGICAL_MONITOR_PRESENTATION: { g_set_error (error, G_MARKUP_ERROR, G_MARKUP_ERROR_UNKNOWN_ELEMENT, "Invalid logical monitor element '%s'", element_name); return; } case STATE_TRANSFORM: { if (g_str_equal (element_name, "rotation")) { parser->state = STATE_TRANSFORM_ROTATION; } else if (g_str_equal (element_name, "flipped")) { parser->state = STATE_TRANSFORM_FLIPPED; } return; } case STATE_TRANSFORM_ROTATION: case STATE_TRANSFORM_FLIPPED: { g_set_error (error, G_MARKUP_ERROR, G_MARKUP_ERROR_UNKNOWN_ELEMENT, "Invalid transform element '%s'", element_name); return; } case STATE_MONITOR: { if (g_str_equal (element_name, "monitorspec")) { parser->current_monitor_spec = g_new0 (MetaMonitorSpec, 1); parser->monitor_spec_parent_state = STATE_MONITOR; parser->state = STATE_MONITOR_SPEC; } else if (g_str_equal (element_name, "mode")) { parser->current_monitor_mode_spec = g_new0 (MetaMonitorModeSpec, 1); parser->state = STATE_MONITOR_MODE; } else if (g_str_equal (element_name, "underscanning")) { parser->state = STATE_MONITOR_UNDERSCANNING; } else { g_set_error (error, G_MARKUP_ERROR, G_MARKUP_ERROR_UNKNOWN_ELEMENT, "Invalid monitor element '%s'", element_name); return; } return; } case STATE_MONITOR_SPEC: { if (g_str_equal (element_name, "connector")) { parser->state = STATE_MONITOR_SPEC_CONNECTOR; } else if (g_str_equal (element_name, "vendor")) { parser->state = STATE_MONITOR_SPEC_VENDOR; } else if (g_str_equal (element_name, "product")) { parser->state = STATE_MONITOR_SPEC_PRODUCT; } else if (g_str_equal (element_name, "serial")) { parser->state = STATE_MONITOR_SPEC_SERIAL; } else { g_set_error (error, G_MARKUP_ERROR, G_MARKUP_ERROR_UNKNOWN_ELEMENT, "Invalid monitor spec element '%s'", element_name); return; } return; } case STATE_MONITOR_SPEC_CONNECTOR: case STATE_MONITOR_SPEC_VENDOR: case STATE_MONITOR_SPEC_PRODUCT: case STATE_MONITOR_SPEC_SERIAL: { g_set_error (error, G_MARKUP_ERROR, G_MARKUP_ERROR_UNKNOWN_ELEMENT, "Invalid monitor spec element '%s'", element_name); return; } case STATE_MONITOR_MODE: { if (g_str_equal (element_name, "width")) { parser->state = STATE_MONITOR_MODE_WIDTH; } else if (g_str_equal (element_name, "height")) { parser->state = STATE_MONITOR_MODE_HEIGHT; } else if (g_str_equal (element_name, "rate")) { parser->state = STATE_MONITOR_MODE_RATE; } else if (g_str_equal (element_name, "flag")) { parser->state = STATE_MONITOR_MODE_FLAG; } else { g_set_error (error, G_MARKUP_ERROR, G_MARKUP_ERROR_UNKNOWN_ELEMENT, "Invalid mode element '%s'", element_name); return; } return; } case STATE_MONITOR_MODE_WIDTH: case STATE_MONITOR_MODE_HEIGHT: case STATE_MONITOR_MODE_RATE: case STATE_MONITOR_MODE_FLAG: { g_set_error (error, G_MARKUP_ERROR, G_MARKUP_ERROR_UNKNOWN_ELEMENT, "Invalid mode sub element '%s'", element_name); return; } case STATE_MONITOR_UNDERSCANNING: { g_set_error (error, G_MARKUP_ERROR, G_MARKUP_ERROR_UNKNOWN_ELEMENT, "Invalid element '%s' under underscanning", element_name); return; } case STATE_DISABLED: { if (!g_str_equal (element_name, "monitorspec")) { g_set_error (error, G_MARKUP_ERROR, G_MARKUP_ERROR_UNKNOWN_ELEMENT, "Invalid element '%s' under disabled", element_name); return; } parser->current_monitor_spec = g_new0 (MetaMonitorSpec, 1); parser->monitor_spec_parent_state = STATE_DISABLED; parser->state = STATE_MONITOR_SPEC; return; } case STATE_POLICY: { if (!(parser->extra_config_flags & META_MONITORS_CONFIG_FLAG_SYSTEM_CONFIG)) { g_set_error (error, G_MARKUP_ERROR, G_MARKUP_ERROR_INVALID_CONTENT, "Policy can only be defined in system level configurations"); return; } if (g_str_equal (element_name, "stores")) { if (parser->seen_stores) { g_set_error (error, G_MARKUP_ERROR, G_MARKUP_ERROR_UNKNOWN_ELEMENT, "Multiple stores elements under policy"); return; } parser->seen_stores = TRUE; parser->state = STATE_STORES; } else if (g_str_equal (element_name, "dbus")) { if (parser->seen_dbus) { g_set_error (error, G_MARKUP_ERROR, G_MARKUP_ERROR_UNKNOWN_ELEMENT, "Multiple dbus elements under policy"); return; } parser->seen_dbus = TRUE; parser->state = STATE_DBUS; } else { enter_unknown_element (parser, element_name, "policy", STATE_POLICY); } return; } case STATE_STORES: { if (g_str_equal (element_name, "store")) { parser->state = STATE_STORE; } else { enter_unknown_element (parser, element_name, "stores", STATE_STORES); } return; } case STATE_STORE: { g_set_error (error, G_MARKUP_ERROR, G_MARKUP_ERROR_UNKNOWN_ELEMENT, "Invalid store sub element '%s'", element_name); return; } case STATE_DBUS: { g_set_error (error, G_MARKUP_ERROR, G_MARKUP_ERROR_UNKNOWN_ELEMENT, "Invalid dbus sub element '%s'", element_name); return; } } } static gboolean derive_logical_monitor_layout (MetaLogicalMonitorConfig *logical_monitor_config, MetaLogicalMonitorLayoutMode layout_mode, GError **error) { MetaMonitorConfig *monitor_config; int mode_width, mode_height; int width = 0, height = 0; GList *l; monitor_config = logical_monitor_config->monitor_configs->data; mode_width = monitor_config->mode_spec->width; mode_height = monitor_config->mode_spec->height; for (l = logical_monitor_config->monitor_configs->next; l; l = l->next) { monitor_config = l->data; if (monitor_config->mode_spec->width != mode_width || monitor_config->mode_spec->height != mode_height) { g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED, "Monitors in logical monitor incompatible"); return FALSE; } } if (meta_monitor_transform_is_rotated (logical_monitor_config->transform)) { width = mode_height; height = mode_width; } else { width = mode_width; height = mode_height; } switch (layout_mode) { case META_LOGICAL_MONITOR_LAYOUT_MODE_LOGICAL: width = roundf (width / logical_monitor_config->scale); height = roundf (height / logical_monitor_config->scale); break; case META_LOGICAL_MONITOR_LAYOUT_MODE_PHYSICAL: break; } logical_monitor_config->layout.width = width; logical_monitor_config->layout.height = height; return TRUE; } static void finish_monitor_spec (ConfigParser *parser) { switch (parser->monitor_spec_parent_state) { case STATE_MONITOR: { parser->current_monitor_config->monitor_spec = parser->current_monitor_spec; parser->current_monitor_spec = NULL; return; } case STATE_DISABLED: { parser->current_disabled_monitor_specs = g_list_prepend (parser->current_disabled_monitor_specs, parser->current_monitor_spec); parser->current_monitor_spec = NULL; return; } default: g_assert_not_reached (); } } static void handle_end_element (GMarkupParseContext *context, const char *element_name, gpointer user_data, GError **error) { ConfigParser *parser = user_data; switch (parser->state) { case STATE_LOGICAL_MONITOR_X: case STATE_LOGICAL_MONITOR_Y: case STATE_LOGICAL_MONITOR_SCALE: case STATE_LOGICAL_MONITOR_PRIMARY: case STATE_LOGICAL_MONITOR_PRESENTATION: { parser->state = STATE_LOGICAL_MONITOR; return; } case STATE_TRANSFORM: { g_assert (g_str_equal (element_name, "transform")); parser->current_logical_monitor_config->transform = parser->current_transform; if (parser->current_transform_flipped) { parser->current_logical_monitor_config->transform += META_MONITOR_TRANSFORM_FLIPPED; } parser->current_transform = META_MONITOR_TRANSFORM_NORMAL; parser->current_transform_flipped = FALSE; parser->state = STATE_LOGICAL_MONITOR; return; } case STATE_TRANSFORM_ROTATION: case STATE_TRANSFORM_FLIPPED: { parser->state = STATE_TRANSFORM; return; } case STATE_MONITOR_SPEC_CONNECTOR: case STATE_MONITOR_SPEC_VENDOR: case STATE_MONITOR_SPEC_PRODUCT: case STATE_MONITOR_SPEC_SERIAL: { parser->state = STATE_MONITOR_SPEC; return; } case STATE_MONITOR_SPEC: { g_assert (g_str_equal (element_name, "monitorspec")); if (!meta_verify_monitor_spec (parser->current_monitor_spec, error)) return; finish_monitor_spec (parser); parser->state = parser->monitor_spec_parent_state; return; } case STATE_MONITOR_MODE_WIDTH: case STATE_MONITOR_MODE_HEIGHT: case STATE_MONITOR_MODE_RATE: case STATE_MONITOR_MODE_FLAG: { parser->state = STATE_MONITOR_MODE; return; } case STATE_MONITOR_MODE: { g_assert (g_str_equal (element_name, "mode")); if (!meta_verify_monitor_mode_spec (parser->current_monitor_mode_spec, error)) return; parser->current_monitor_config->mode_spec = parser->current_monitor_mode_spec; parser->current_monitor_mode_spec = NULL; parser->state = STATE_MONITOR; return; } case STATE_MONITOR_UNDERSCANNING: { g_assert (g_str_equal (element_name, "underscanning")); parser->state = STATE_MONITOR; return; } case STATE_MONITOR: { MetaLogicalMonitorConfig *logical_monitor_config; g_assert (g_str_equal (element_name, "monitor")); if (!meta_verify_monitor_config (parser->current_monitor_config, error)) return; logical_monitor_config = parser->current_logical_monitor_config; logical_monitor_config->monitor_configs = g_list_append (logical_monitor_config->monitor_configs, parser->current_monitor_config); parser->current_monitor_config = NULL; parser->state = STATE_LOGICAL_MONITOR; return; } case STATE_LOGICAL_MONITOR: { MetaLogicalMonitorConfig *logical_monitor_config = parser->current_logical_monitor_config; g_assert (g_str_equal (element_name, "logicalmonitor")); if (parser->current_was_migrated) logical_monitor_config->scale = -1; else if (logical_monitor_config->scale == 0) logical_monitor_config->scale = 1; parser->current_logical_monitor_configs = g_list_append (parser->current_logical_monitor_configs, logical_monitor_config); parser->current_logical_monitor_config = NULL; parser->state = STATE_CONFIGURATION; return; } case STATE_MIGRATED: { g_assert (g_str_equal (element_name, "migrated")); parser->state = STATE_CONFIGURATION; return; } case STATE_DISABLED: { g_assert (g_str_equal (element_name, "disabled")); parser->state = STATE_CONFIGURATION; return; } case STATE_CONFIGURATION: { MetaMonitorConfigStore *store = parser->config_store; MetaMonitorsConfig *config; GList *l; MetaLogicalMonitorLayoutMode layout_mode; MetaMonitorsConfigFlag config_flags = META_MONITORS_CONFIG_FLAG_NONE; g_assert (g_str_equal (element_name, "configuration")); if (parser->current_was_migrated) layout_mode = META_LOGICAL_MONITOR_LAYOUT_MODE_PHYSICAL; else layout_mode = meta_monitor_manager_get_default_layout_mode (store->monitor_manager); for (l = parser->current_logical_monitor_configs; l; l = l->next) { MetaLogicalMonitorConfig *logical_monitor_config = l->data; if (!derive_logical_monitor_layout (logical_monitor_config, layout_mode, error)) return; if (!meta_verify_logical_monitor_config (logical_monitor_config, layout_mode, store->monitor_manager, error)) return; } if (parser->current_was_migrated) config_flags |= META_MONITORS_CONFIG_FLAG_MIGRATED; config_flags |= parser->extra_config_flags; config = meta_monitors_config_new_full (parser->current_logical_monitor_configs, parser->current_disabled_monitor_specs, layout_mode, config_flags); parser->current_logical_monitor_configs = NULL; parser->current_disabled_monitor_specs = NULL; if (!meta_verify_monitors_config (config, store->monitor_manager, error)) { g_object_unref (config); return; } g_hash_table_replace (parser->pending_configs, config->key, config); parser->state = STATE_MONITORS; return; } case STATE_STORE: { g_assert (g_str_equal (element_name, "store")); if (parser->pending_store == -1) { g_set_error (error, G_MARKUP_ERROR, G_MARKUP_ERROR_INVALID_CONTENT, "Got an empty store"); return; } if (g_list_find (parser->stores, GINT_TO_POINTER (parser->pending_store))) { g_set_error (error, G_MARKUP_ERROR, G_MARKUP_ERROR_INVALID_CONTENT, "Multiple identical stores in policy"); return; } parser->stores = g_list_append (parser->stores, GINT_TO_POINTER (parser->pending_store)); parser->pending_store = -1; parser->state = STATE_STORES; return; } case STATE_STORES: { g_assert (g_str_equal (element_name, "stores")); if (parser->config_store->has_stores_policy) { g_warning ("Ignoring stores policy from '%s', " "it has already been configured", g_file_peek_path (parser->file)); g_clear_pointer (&parser->stores, g_list_free); } else { parser->config_store->stores_policy = g_steal_pointer (&parser->stores); parser->config_store->has_stores_policy = TRUE; } parser->state = STATE_POLICY; return; } case STATE_DBUS: { if (!parser->config_store->has_dbus_policy) { parser->config_store->has_dbus_policy = TRUE; parser->config_store->policy.enable_dbus = parser->enable_dbus; parser->enable_dbus_set = FALSE; } else { g_warning ("Policy for monitor configuration via D-Bus " "has already been set, ignoring policy from '%s'", g_file_get_path (parser->file)); } parser->state = STATE_POLICY; return; } case STATE_POLICY: { g_assert (g_str_equal (element_name, "policy")); parser->state = STATE_MONITORS; return; } case STATE_UNKNOWN: { parser->unknown_level--; if (parser->unknown_level == 0) { g_assert (parser->unknown_state_root >= 0); parser->state = parser->unknown_state_root; parser->unknown_state_root = -1; } return; } case STATE_MONITORS: { g_assert (g_str_equal (element_name, "monitors")); parser->state = STATE_INITIAL; return; } case STATE_INITIAL: { g_assert_not_reached (); } } } static gboolean read_int (const char *text, gsize text_len, gint *out_value, GError **error) { char buf[64]; int64_t value; char *end; strncpy (buf, text, text_len); buf[MIN (63, text_len)] = 0; value = g_ascii_strtoll (buf, &end, 10); if (*end || value < 0 || value > G_MAXINT16) { g_set_error (error, G_MARKUP_ERROR, G_MARKUP_ERROR_INVALID_CONTENT, "Expected a number, got %s", buf); return FALSE; } else { *out_value = value; return TRUE; } } static gboolean read_float (const char *text, gsize text_len, float *out_value, GError **error) { char buf[64]; float value; char *end; strncpy (buf, text, text_len); buf[MIN (63, text_len)] = 0; value = g_ascii_strtod (buf, &end); if (*end) { g_set_error (error, G_MARKUP_ERROR, G_MARKUP_ERROR_INVALID_CONTENT, "Expected a number, got %s", buf); return FALSE; } else { *out_value = value; return TRUE; } } static gboolean read_bool (const char *text, gsize text_len, gboolean *out_value, GError **error) { if (text_equals (text, text_len, "no")) { *out_value = FALSE; return TRUE; } else if (text_equals (text, text_len, "yes")) { *out_value = TRUE; return TRUE; } else { g_set_error (error, G_MARKUP_ERROR, G_MARKUP_ERROR_INVALID_CONTENT, "Invalid boolean value '%.*s'", (int) text_len, text); return FALSE; } } static gboolean is_all_whitespace (const char *text, gsize text_len) { gsize i; for (i = 0; i < text_len; i++) if (!g_ascii_isspace (text[i])) return FALSE; return TRUE; } static void handle_text (GMarkupParseContext *context, const gchar *text, gsize text_len, gpointer user_data, GError **error) { ConfigParser *parser = user_data; switch (parser->state) { case STATE_UNKNOWN: return; case STATE_INITIAL: case STATE_MONITORS: case STATE_CONFIGURATION: case STATE_MIGRATED: case STATE_LOGICAL_MONITOR: case STATE_MONITOR: case STATE_MONITOR_SPEC: case STATE_MONITOR_MODE: case STATE_TRANSFORM: case STATE_DISABLED: case STATE_POLICY: case STATE_STORES: { if (!is_all_whitespace (text, text_len)) g_set_error (error, G_MARKUP_ERROR, G_MARKUP_ERROR_INVALID_CONTENT, "Unexpected content at this point"); return; } case STATE_MONITOR_SPEC_CONNECTOR: { parser->current_monitor_spec->connector = g_strndup (text, text_len); return; } case STATE_MONITOR_SPEC_VENDOR: { parser->current_monitor_spec->vendor = g_strndup (text, text_len); return; } case STATE_MONITOR_SPEC_PRODUCT: { parser->current_monitor_spec->product = g_strndup (text, text_len); return; } case STATE_MONITOR_SPEC_SERIAL: { parser->current_monitor_spec->serial = g_strndup (text, text_len); return; } case STATE_LOGICAL_MONITOR_X: { read_int (text, text_len, &parser->current_logical_monitor_config->layout.x, error); return; } case STATE_LOGICAL_MONITOR_Y: { read_int (text, text_len, &parser->current_logical_monitor_config->layout.y, error); return; } case STATE_LOGICAL_MONITOR_SCALE: { if (!read_float (text, text_len, &parser->current_logical_monitor_config->scale, error)) return; if (parser->current_logical_monitor_config->scale <= 0.0) { g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED, "Logical monitor scale '%g' invalid", parser->current_logical_monitor_config->scale); return; } return; } case STATE_LOGICAL_MONITOR_PRIMARY: { read_bool (text, text_len, &parser->current_logical_monitor_config->is_primary, error); return; } case STATE_LOGICAL_MONITOR_PRESENTATION: { read_bool (text, text_len, &parser->current_logical_monitor_config->is_presentation, error); return; } case STATE_TRANSFORM_ROTATION: { if (text_equals (text, text_len, "normal")) parser->current_transform = META_MONITOR_TRANSFORM_NORMAL; else if (text_equals (text, text_len, "left")) parser->current_transform = META_MONITOR_TRANSFORM_90; else if (text_equals (text, text_len, "upside_down")) parser->current_transform = META_MONITOR_TRANSFORM_180; else if (text_equals (text, text_len, "right")) parser->current_transform = META_MONITOR_TRANSFORM_270; else g_set_error (error, G_MARKUP_ERROR, G_MARKUP_ERROR_INVALID_CONTENT, "Invalid rotation type %.*s", (int)text_len, text); return; } case STATE_TRANSFORM_FLIPPED: { read_bool (text, text_len, &parser->current_transform_flipped, error); return; } case STATE_MONITOR_MODE_WIDTH: { read_int (text, text_len, &parser->current_monitor_mode_spec->width, error); return; } case STATE_MONITOR_MODE_HEIGHT: { read_int (text, text_len, &parser->current_monitor_mode_spec->height, error); return; } case STATE_MONITOR_MODE_RATE: { read_float (text, text_len, &parser->current_monitor_mode_spec->refresh_rate, error); return; } case STATE_MONITOR_MODE_FLAG: { if (text_equals (text, text_len, "interlace")) { parser->current_monitor_mode_spec->flags |= META_CRTC_MODE_FLAG_INTERLACE; } else { g_set_error (error, G_MARKUP_ERROR, G_MARKUP_ERROR_INVALID_CONTENT, "Invalid mode flag %.*s", (int) text_len, text); } return; } case STATE_MONITOR_UNDERSCANNING: { read_bool (text, text_len, &parser->current_monitor_config->enable_underscanning, error); return; } case STATE_STORE: { MetaConfigStore store; if (parser->pending_store != -1) { g_set_error (error, G_MARKUP_ERROR, G_MARKUP_ERROR_INVALID_CONTENT, "Multiple store strings"); return; } if (text_equals (text, text_len, "system")) { store = META_CONFIG_STORE_SYSTEM; } else if (text_equals (text, text_len, "user")) { store = META_CONFIG_STORE_USER; } else { g_set_error (error, G_MARKUP_ERROR, G_MARKUP_ERROR_INVALID_CONTENT, "Invalid store %.*s", (int) text_len, text); return; } parser->pending_store = store; return; } case STATE_DBUS: { parser->enable_dbus_set = TRUE; read_bool (text, text_len, &parser->enable_dbus, error); return; } } } static const GMarkupParser config_parser = { .start_element = handle_start_element, .end_element = handle_end_element, .text = handle_text }; static gboolean read_config_file (MetaMonitorConfigStore *config_store, GFile *file, MetaMonitorsConfigFlag extra_config_flags, GHashTable **out_configs, GError **error) { char *buffer; gsize size; ConfigParser parser; GMarkupParseContext *parse_context; if (!g_file_load_contents (file, NULL, &buffer, &size, NULL, error)) return FALSE; parser = (ConfigParser) { .state = STATE_INITIAL, .file = file, .config_store = config_store, .pending_configs = g_hash_table_new_full (meta_monitors_config_key_hash, meta_monitors_config_key_equal, NULL, g_object_unref), .extra_config_flags = extra_config_flags, .unknown_state_root = -1, .pending_store = -1, }; parse_context = g_markup_parse_context_new (&config_parser, G_MARKUP_TREAT_CDATA_AS_TEXT | G_MARKUP_PREFIX_ERROR_POSITION, &parser, NULL); if (!g_markup_parse_context_parse (parse_context, buffer, size, error)) { g_list_free_full (parser.current_logical_monitor_configs, (GDestroyNotify) meta_logical_monitor_config_free); g_clear_pointer (&parser.current_monitor_spec, meta_monitor_spec_free); g_free (parser.current_monitor_mode_spec); g_clear_pointer (&parser.current_monitor_config, meta_monitor_config_free); g_clear_pointer (&parser.current_logical_monitor_config, meta_logical_monitor_config_free); g_list_free (parser.stores); g_hash_table_unref (parser.pending_configs); return FALSE; } *out_configs = g_steal_pointer (&parser.pending_configs); g_markup_parse_context_free (parse_context); g_free (buffer); return TRUE; } MetaMonitorsConfig * meta_monitor_config_store_lookup (MetaMonitorConfigStore *config_store, MetaMonitorsConfigKey *key) { return META_MONITORS_CONFIG (g_hash_table_lookup (config_store->configs, key)); } static void append_monitor_spec (GString *buffer, MetaMonitorSpec *monitor_spec, const char *indentation) { char *escaped; g_string_append_printf (buffer, "%s\n", indentation); escaped = g_markup_escape_text (monitor_spec->connector, -1); g_string_append_printf (buffer, "%s %s\n", indentation, escaped); g_free (escaped); escaped = g_markup_escape_text (monitor_spec->vendor, -1); g_string_append_printf (buffer, "%s %s\n", indentation, escaped); g_free (escaped); escaped = g_markup_escape_text (monitor_spec->product, -1); g_string_append_printf (buffer, "%s %s\n", indentation, escaped); g_free (escaped); escaped = g_markup_escape_text (monitor_spec->serial, -1); g_string_append_printf (buffer, "%s %s\n", indentation, escaped); g_free (escaped); g_string_append_printf (buffer, "%s\n", indentation); } static void append_monitors (GString *buffer, GList *monitor_configs) { GList *l; for (l = monitor_configs; l; l = l->next) { MetaMonitorConfig *monitor_config = l->data; g_string_append (buffer, " \n"); append_monitor_spec (buffer, monitor_config->monitor_spec, " "); g_string_append (buffer, " \n"); g_string_append_printf (buffer, " %d\n", monitor_config->mode_spec->width); g_string_append_printf (buffer, " %d\n", monitor_config->mode_spec->height); g_string_append_printf (buffer, " %.3f\n", monitor_config->mode_spec->refresh_rate); if (monitor_config->mode_spec->flags & META_CRTC_MODE_FLAG_INTERLACE) g_string_append_printf (buffer, " interlace\n"); g_string_append (buffer, " \n"); if (monitor_config->enable_underscanning) g_string_append (buffer, " yes\n"); g_string_append (buffer, " \n"); } } static const char * bool_to_string (gboolean value) { return value ? "yes" : "no"; } static void append_transform (GString *buffer, MetaMonitorTransform transform) { const char *rotation = NULL; gboolean flipped = FALSE; switch (transform) { case META_MONITOR_TRANSFORM_NORMAL: return; case META_MONITOR_TRANSFORM_90: rotation = "left"; break; case META_MONITOR_TRANSFORM_180: rotation = "upside_down"; break; case META_MONITOR_TRANSFORM_270: rotation = "right"; break; case META_MONITOR_TRANSFORM_FLIPPED: rotation = "normal"; flipped = TRUE; break; case META_MONITOR_TRANSFORM_FLIPPED_90: rotation = "left"; flipped = TRUE; break; case META_MONITOR_TRANSFORM_FLIPPED_180: rotation = "upside_down"; flipped = TRUE; break; case META_MONITOR_TRANSFORM_FLIPPED_270: rotation = "right"; flipped = TRUE; break; } g_string_append (buffer, " \n"); g_string_append_printf (buffer, " %s\n", rotation); g_string_append_printf (buffer, " %s\n", bool_to_string (flipped)); g_string_append (buffer, " \n"); } static void append_logical_monitor_xml (GString *buffer, MetaMonitorsConfig *config, MetaLogicalMonitorConfig *logical_monitor_config) { char scale_str[G_ASCII_DTOSTR_BUF_SIZE]; g_string_append (buffer, " \n"); g_string_append_printf (buffer, " %d\n", logical_monitor_config->layout.x); g_string_append_printf (buffer, " %d\n", logical_monitor_config->layout.y); g_ascii_dtostr (scale_str, G_ASCII_DTOSTR_BUF_SIZE, logical_monitor_config->scale); if ((config->flags & META_MONITORS_CONFIG_FLAG_MIGRATED) == 0) g_string_append_printf (buffer, " %s\n", scale_str); if (logical_monitor_config->is_primary) g_string_append (buffer, " yes\n"); if (logical_monitor_config->is_presentation) g_string_append (buffer, " yes\n"); append_transform (buffer, logical_monitor_config->transform); append_monitors (buffer, logical_monitor_config->monitor_configs); g_string_append (buffer, " \n"); } static GString * generate_config_xml (MetaMonitorConfigStore *config_store) { GString *buffer; GHashTableIter iter; MetaMonitorsConfig *config; buffer = g_string_new (""); g_string_append_printf (buffer, "\n", MONITORS_CONFIG_XML_FORMAT_VERSION); g_hash_table_iter_init (&iter, config_store->configs); while (g_hash_table_iter_next (&iter, NULL, (gpointer *) &config)) { GList *l; if (config->flags & META_MONITORS_CONFIG_FLAG_SYSTEM_CONFIG) continue; g_string_append (buffer, " \n"); if (config->flags & META_MONITORS_CONFIG_FLAG_MIGRATED) g_string_append (buffer, " \n"); for (l = config->logical_monitor_configs; l; l = l->next) { MetaLogicalMonitorConfig *logical_monitor_config = l->data; append_logical_monitor_xml (buffer, config, logical_monitor_config); } if (config->disabled_monitor_specs) { g_string_append (buffer, " \n"); for (l = config->disabled_monitor_specs; l; l = l->next) { MetaMonitorSpec *monitor_spec = l->data; append_monitor_spec (buffer, monitor_spec, " "); } g_string_append (buffer, " \n"); } g_string_append (buffer, " \n"); } g_string_append (buffer, "\n"); return buffer; } typedef struct _SaveData { MetaMonitorConfigStore *config_store; GString *buffer; } SaveData; static void saved_cb (GObject *object, GAsyncResult *result, gpointer user_data) { SaveData *data = user_data; GError *error = NULL; if (!g_file_replace_contents_finish (G_FILE (object), result, NULL, &error)) { if (!g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED)) { g_warning ("Saving monitor configuration failed: %s", error->message); g_clear_object (&data->config_store->save_cancellable); } g_error_free (error); } else { g_clear_object (&data->config_store->save_cancellable); } g_clear_object (&data->config_store); g_string_free (data->buffer, TRUE); g_free (data); } static void meta_monitor_config_store_save_sync (MetaMonitorConfigStore *config_store) { GError *error = NULL; GFile *file; GString *buffer; if (config_store->custom_write_file) file = config_store->custom_write_file; else file = config_store->user_file; buffer = generate_config_xml (config_store); if (!g_file_replace_contents (file, buffer->str, buffer->len, NULL, FALSE, G_FILE_CREATE_REPLACE_DESTINATION, NULL, NULL, &error)) { g_warning ("Saving monitor configuration failed: %s", error->message); g_error_free (error); } g_string_free (buffer, TRUE); } static void meta_monitor_config_store_save (MetaMonitorConfigStore *config_store) { GString *buffer; SaveData *data; if (config_store->save_cancellable) { g_cancellable_cancel (config_store->save_cancellable); g_clear_object (&config_store->save_cancellable); } /* * Custom write file is only ever used by the test suite, and the test suite * will want to have be able to read back the content immediately, so for * custom write files, do the content replacement synchronously. */ if (config_store->custom_write_file) { meta_monitor_config_store_save_sync (config_store); return; } if (config_store->has_stores_policy && !g_list_find (config_store->stores_policy, GINT_TO_POINTER (META_CONFIG_STORE_USER))) return; config_store->save_cancellable = g_cancellable_new (); buffer = generate_config_xml (config_store); data = g_new0 (SaveData, 1); *data = (SaveData) { .config_store = g_object_ref (config_store), .buffer = buffer }; g_file_replace_contents_async (config_store->user_file, buffer->str, buffer->len, NULL, TRUE, G_FILE_CREATE_REPLACE_DESTINATION, config_store->save_cancellable, saved_cb, data); } static void maybe_save_configs (MetaMonitorConfigStore *config_store) { /* * If a custom file is used, it means we are run by the test suite. When this * is done, avoid replacing the user configuration file with test data, * except if a custom write file is set as well. */ if (!config_store->custom_read_file || config_store->custom_write_file) meta_monitor_config_store_save (config_store); } static gboolean is_system_config (MetaMonitorsConfig *config) { return !!(config->flags & META_MONITORS_CONFIG_FLAG_SYSTEM_CONFIG); } void meta_monitor_config_store_add (MetaMonitorConfigStore *config_store, MetaMonitorsConfig *config) { g_hash_table_replace (config_store->configs, config->key, g_object_ref (config)); if (!is_system_config (config)) maybe_save_configs (config_store); } void meta_monitor_config_store_remove (MetaMonitorConfigStore *config_store, MetaMonitorsConfig *config) { g_hash_table_remove (config_store->configs, config->key); if (!is_system_config (config)) maybe_save_configs (config_store); } gboolean meta_monitor_config_store_set_custom (MetaMonitorConfigStore *config_store, const char *read_path, const char *write_path, MetaMonitorsConfigFlag config_flags, GError **error) { GHashTable *new_configs = NULL; g_clear_object (&config_store->custom_read_file); g_clear_object (&config_store->custom_write_file); config_store->custom_read_file = g_file_new_for_path (read_path); if (write_path) config_store->custom_write_file = g_file_new_for_path (write_path); g_clear_pointer (&config_store->stores_policy, g_list_free); config_store->has_stores_policy = FALSE; config_store->policy.enable_dbus = TRUE; config_store->has_dbus_policy = FALSE; if (!read_config_file (config_store, config_store->custom_read_file, config_flags, &new_configs, error)) return FALSE; g_clear_pointer (&config_store->configs, g_hash_table_unref); config_store->configs = g_steal_pointer (&new_configs); return TRUE; } int meta_monitor_config_store_get_config_count (MetaMonitorConfigStore *config_store) { return (int) g_hash_table_size (config_store->configs); } GList * meta_monitor_config_store_get_stores_policy (MetaMonitorConfigStore *config_store) { return config_store->stores_policy; } MetaMonitorManager * meta_monitor_config_store_get_monitor_manager (MetaMonitorConfigStore *config_store) { return config_store->monitor_manager; } MetaMonitorConfigStore * meta_monitor_config_store_new (MetaMonitorManager *monitor_manager) { return g_object_new (META_TYPE_MONITOR_CONFIG_STORE, "monitor-manager", monitor_manager, NULL); } static void meta_monitor_config_store_constructed (GObject *object) { MetaMonitorConfigStore *config_store = META_MONITOR_CONFIG_STORE (object); meta_monitor_config_store_reset (config_store); G_OBJECT_CLASS (meta_monitor_config_store_parent_class)->constructed (object); } static void meta_monitor_config_store_dispose (GObject *object) { MetaMonitorConfigStore *config_store = META_MONITOR_CONFIG_STORE (object); if (config_store->save_cancellable) { g_cancellable_cancel (config_store->save_cancellable); g_clear_object (&config_store->save_cancellable); meta_monitor_config_store_save_sync (config_store); } g_clear_pointer (&config_store->configs, g_hash_table_destroy); g_clear_object (&config_store->user_file); g_clear_object (&config_store->custom_read_file); g_clear_object (&config_store->custom_write_file); g_clear_pointer (&config_store->stores_policy, g_list_free); G_OBJECT_CLASS (meta_monitor_config_store_parent_class)->dispose (object); } static void meta_monitor_config_store_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { MetaMonitorConfigStore *config_store = META_MONITOR_CONFIG_STORE (object); switch (prop_id) { case PROP_MONITOR_MANAGER: g_value_set_object (value, &config_store->monitor_manager); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); } } static void meta_monitor_config_store_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { MetaMonitorConfigStore *config_store = META_MONITOR_CONFIG_STORE (object); switch (prop_id) { case PROP_MONITOR_MANAGER: config_store->monitor_manager = g_value_get_object (value); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); } } static void meta_monitor_config_store_init (MetaMonitorConfigStore *config_store) { config_store->configs = g_hash_table_new_full (meta_monitors_config_key_hash, meta_monitors_config_key_equal, NULL, g_object_unref); config_store->policy.enable_dbus = TRUE; } static void meta_monitor_config_store_class_init (MetaMonitorConfigStoreClass *klass) { GObjectClass *object_class = G_OBJECT_CLASS (klass); object_class->constructed = meta_monitor_config_store_constructed; object_class->dispose = meta_monitor_config_store_dispose; object_class->get_property = meta_monitor_config_store_get_property; object_class->set_property = meta_monitor_config_store_set_property; obj_props[PROP_MONITOR_MANAGER] = g_param_spec_object ("monitor-manager", "MetaMonitorManager", "MetaMonitorManager", META_TYPE_MONITOR_MANAGER, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT_ONLY); g_object_class_install_properties (object_class, PROP_LAST, obj_props); } static void replace_configs (MetaMonitorConfigStore *config_store, GHashTable *configs) { GHashTableIter iter; MetaMonitorsConfigKey *key; MetaMonitorsConfig *config; g_hash_table_iter_init (&iter, configs); while (g_hash_table_iter_next (&iter, (gpointer *) &key, (gpointer *) &config)) { g_hash_table_iter_steal (&iter); g_hash_table_replace (config_store->configs, key, config); } } void meta_monitor_config_store_reset (MetaMonitorConfigStore *config_store) { g_autoptr (GHashTable) system_configs = NULL; g_autoptr (GHashTable) user_configs = NULL; const char * const *system_dirs; char *user_file_path; GError *error = NULL; g_clear_object (&config_store->user_file); g_clear_object (&config_store->custom_read_file); g_clear_object (&config_store->custom_write_file); g_hash_table_remove_all (config_store->configs); for (system_dirs = g_get_system_config_dirs (); system_dirs && *system_dirs; system_dirs++) { g_autofree char *system_file_path = NULL; system_file_path = g_build_filename (*system_dirs, "monitors.xml", NULL); if (g_file_test (system_file_path, G_FILE_TEST_EXISTS)) { g_autoptr (GFile) system_file = NULL; system_file = g_file_new_for_path (system_file_path); if (!read_config_file (config_store, system_file, META_MONITORS_CONFIG_FLAG_SYSTEM_CONFIG, &system_configs, &error)) { if (g_error_matches (error, META_MONITOR_CONFIG_STORE_ERROR, META_MONITOR_CONFIG_STORE_ERROR_NEEDS_MIGRATION)) g_warning ("System monitor configuration file (%s) is " "incompatible; ask your administrator to migrate " "the system monitor configuration.", system_file_path); else g_warning ("Failed to read monitors config file '%s': %s", system_file_path, error->message); g_clear_error (&error); } } } user_file_path = g_build_filename (g_get_user_config_dir (), "monitors.xml", NULL); config_store->user_file = g_file_new_for_path (user_file_path); if (g_file_test (user_file_path, G_FILE_TEST_EXISTS)) { if (!read_config_file (config_store, config_store->user_file, META_MONITORS_CONFIG_FLAG_NONE, &user_configs, &error)) { if (error->domain == META_MONITOR_CONFIG_STORE_ERROR && error->code == META_MONITOR_CONFIG_STORE_ERROR_NEEDS_MIGRATION) { g_clear_error (&error); if (!meta_migrate_old_user_monitors_config (config_store, &error)) { g_warning ("Failed to migrate old monitors config file: %s", error->message); g_error_free (error); } } else { g_warning ("Failed to read monitors config file '%s': %s", user_file_path, error->message); g_error_free (error); } } } if (config_store->has_stores_policy) { GList *l; for (l = g_list_last (config_store->stores_policy); l; l = l->prev) { MetaConfigStore store = GPOINTER_TO_INT (l->data); switch (store) { case META_CONFIG_STORE_SYSTEM: if (system_configs) replace_configs (config_store, system_configs); break; case META_CONFIG_STORE_USER: if (user_configs) replace_configs (config_store, user_configs); } } } else { if (system_configs) replace_configs (config_store, system_configs); if (user_configs) replace_configs (config_store, user_configs); } g_free (user_file_path); } const MetaMonitorConfigPolicy * meta_monitor_config_store_get_policy (MetaMonitorConfigStore *config_store) { return &config_store->policy; }