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Diffstat (limited to 'data/extensions/jsr@javascriptrestrictor/wrappingS-IDLE.js')
| -rw-r--r-- | data/extensions/jsr@javascriptrestrictor/wrappingS-IDLE.js | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/data/extensions/jsr@javascriptrestrictor/wrappingS-IDLE.js b/data/extensions/jsr@javascriptrestrictor/wrappingS-IDLE.js new file mode 100644 index 0000000..785b2f4 --- /dev/null +++ b/data/extensions/jsr@javascriptrestrictor/wrappingS-IDLE.js @@ -0,0 +1,142 @@ +/** \file + * \brief Wrappers for Idle Detection API + * + * \see https://wicg.github.io/idle-detection/ + * + * \author Copyright (C) 2022 Libor Polcak + * + * \license SPDX-License-Identifier: GPL-3.0-or-later + */ +// +// 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 3 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, see <https://www.gnu.org/licenses/>. +// + +/** \file + * \ingroup wrappers + * + * \see https://web.dev/idle-detection/ + * \see https://developer.mozilla.org/en-US/docs/Web/API/IdleDetector + * + * The Idle Detection API can detect inactive users and locked screens. + * JShelter either removes the API (IdleDetector), or disables permission + * requests and returns user activity and unlocked screen (for previously + * granted permissions), or just always report user activity and unlocked + * screen. + * + * \bug JShelter does not block events, so the page is notified that + * something changed but it cannot read what changed. + */ + +/* + * Create private namespace + */ +(function() { + var setArgs = ` + var deleteapi = (args[0] === 2); + var disableapi = (args[0] === 1); + var confuse = (args[0] === 0); + `; + var wrappers = [ + { + parent_object: "window", + parent_object_property: "IdleDetector", + wrapped_objects: [], + helping_code: setArgs, + apply_if: "deleteapi", + post_wrapping_code: [ + { + code_type: "delete_properties", + parent_object: "window", + delete_properties: ["IdleDetector"], + } + ], + }, + { + parent_object: "IdleDetector", + parent_object_property: "requestPermission", + wrapped_objects: [], + helping_code: setArgs, + apply_if: "disableapi", + wrapping_function_args: "", + wrapping_function_body: ` + return Promise.resolve('denied'); + `, + }, + { + parent_object: "IdleDetector.prototype", + parent_object_property: "screenState", + helping_code: setArgs + `let originalF = Object.getOwnPropertyDescriptor(IdleDetector.prototype, "screenState").get;`, + apply_if: "disableapi || confuse", + post_wrapping_code: [ + { + code_type: "object_properties", + parent_object: "IdleDetector.prototype", + parent_object_property: "screenState", + wrapped_objects: [], + /** \brief replaces IdleDeadline.prototype.didTimeout getter + */ + wrapped_properties: [ + { + property_name: "get", + property_value: ` + function() { + if (disableapi) { + return null; + } + let orig = originalF.call(this); + if (orig === null) { + return orig; + } + return 'unlocked'; + }`, + }, + ], + } + ], + }, + { + parent_object: "IdleDetector.prototype", + parent_object_property: "userState", + helping_code: setArgs + `let originalF = Object.getOwnPropertyDescriptor(IdleDetector.prototype,"userState").get;`, + apply_if: "disableapi || confuse", + post_wrapping_code: [ + { + code_type: "object_properties", + parent_object: "IdleDetector.prototype", + parent_object_property: "userState", + wrapped_objects: [], + /** \brief replaces IdleDeadline.prototype.didTimeout getter + */ + wrapped_properties: [ + { + property_name: "get", + property_value: ` + function() { + if (disableapi) { + return null; + } + let orig = originalF.call(this); + if (orig === null) { + return orig; + } + return 'active'; + }`, + }, + ], + } + ], + }, + ] + add_wrappers(wrappers); +})(); |