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author | Wojtek Kosior <wk@koszkonutek-tmp.pl.eu.org> | 2021-05-12 13:36:09 +0200 |
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committer | Wojtek Kosior <wk@koszkonutek-tmp.pl.eu.org> | 2021-05-12 13:36:09 +0200 |
commit | 89db6823fae5099816732c3cd2ba39700c1c4607 (patch) | |
tree | a4bb0c9bba8b329c19d8287c00e3af9b66b63b4d /background/script_injector.mjs | |
parent | 01937dc9d5215ef96ce756e3ccda51bf29032f58 (diff) | |
download | browser-extension-89db6823fae5099816732c3cd2ba39700c1c4607.tar.gz browser-extension-89db6823fae5099816732c3cd2ba39700c1c4607.zip |
remove remnants of LibreJS
Diffstat (limited to 'background/script_injector.mjs')
-rw-r--r-- | background/script_injector.mjs | 122 |
1 files changed, 0 insertions, 122 deletions
diff --git a/background/script_injector.mjs b/background/script_injector.mjs deleted file mode 100644 index 3298a43..0000000 --- a/background/script_injector.mjs +++ /dev/null @@ -1,122 +0,0 @@ -/** -* Myext script injector -* -* Copyright (C) 2021 Wojtek Kosior -* -* Dual-licensed under: -* - 0BSD license -* - GPLv3 or (at your option) any later version -*/ - -import {TYPE_PREFIX} from '/common/stored_types.mjs'; -import sha256 from './sha256.mjs'; -import {url_item} from './ResponseProcessor.mjs'; -import get_storage from './storage.mjs'; - -"use strict"; - -var storage; - -function ajax_callback() -{ - if (this.readyState == 4) - this.resolve_callback(this); -} - -function initiate_ajax_request(resolve, method, url) -{ - var xhttp = new XMLHttpRequest(); - xhttp.resolve_callback = resolve; - xhttp.onreadystatechange = ajax_callback; - xhttp.open(method, url, true); - xhttp.send(); -} - -function make_ajax_request(method, url) -{ - return new Promise((resolve, reject) => - initiate_ajax_request(resolve, method, url)); -} - -async function fetch_remote_script(script_data) -{ - try { - let xhttp = await make_ajax_request("GET", script_data.url); - if (xhttp.status === 200) { - let computed_hash = sha256(xhttp.responseText); - if (computed_hash !== script_data.hash) { - console.log(`Bad hash for ${script_data.url}\n got ${computed_hash} instead of ${script_data.hash}`); - return; - } - return xhttp.responseText; - } else { - console.log("script not fetched: " + script_data.url); - return; - } - } catch (e) { - console.log(e); - } -} - -async function get_script_text(script_name) -{ - try { - let script_data = storage.get(TYPE_PREFIX.SCRIPT, script_name); - if (script_data === undefined) { - console.log(`missing data for ${script_name}`); - return; - } - let script_text = script_data.text; - if (!script_text) - script_text = await fetch_remote_script(script_data); - return script_text; - } catch (e) { - console.log(e); - } -} - -// TODO: parallelize script fetching -// TODO: guard against infinite recursion - -async function inject_scripts_rec(components, doc) -{ - for (let [prefix, name] of components) { - if (prefix === TYPE_PREFIX.BUNDLE) { - var bundle = storage.get(TYPE_PREFIX.BUNDLE, name); - - if (bundle === undefined) { - console.log(`no bundle in storage for key ${elem_key}`); - continue; - } - await inject_scripts_rec(bundle, doc); - } else { - let script_text = await get_script_text(name,); - if (script_text === undefined) - continue; - - let script = doc.createElement("script"); - script.textContent = script_text; - doc.body.appendChild(script); - } - } -} - -async function inject_scripts(url, doc) -{ - storage = await get_storage(); - - url = url_item(url); - - let components = storage.get(TYPE_PREFIX.PAGE, url); - - if (components === undefined) { - console.log(`got nothing for ${url}`); - return - } else { - console.log(`got ${components.length} component(s) for ${url}`); - } - - await inject_scripts_rec(components, doc); -} - -export default inject_scripts; |