add new root content script

1 files changed, 89 insertions, 0 deletions

diff --git a/content/content.js b/content/content.js
new file mode 100644
index 0000000..804a473
--- /dev/null
+++ b/content/content.js
@@ -0,0 +1,89 @@
+/**
+ * This file is part of Haketilo.
+ *
+ * Function: Content scripts - main script.
+ *
+ * Copyright (C) 2022 Wojtek Kosior
+ *
+ * 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.
+ *
+ * As additional permission under GNU GPL version 3 section 7, you
+ * may distribute forms of that code without the copy of the GNU
+ * GPL normally required by section 4, provided you include this
+ * license notice and, in case of non-source distribution, a URL
+ * through which recipients can access the Corresponding Source.
+ * If you modify file(s) with this exception, you may extend this
+ * exception to your version of the file(s), but you are not
+ * obligated to do so. If you do not wish to do so, delete this
+ * exception statement from your version.
+ *
+ * As a special exception to the GPL, any HTML file which merely
+ * makes function calls to this code, and for that purpose
+ * includes it by reference shall be deemed a separate work for
+ * copyright law purposes. If you modify this code, you may extend
+ * this exception to your version of the code, but you are not
+ * obligated to do so. If you do not wish to do so, delete this
+ * exception statement from your version.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ * I, Wojtek Kosior, thereby promise not to sue for violation of this file's
+ * license. Although I request that you do not make use of this code in a
+ * proprietary program, I am not going to enforce this in court.
+ */
+
+#IMPORT content/repo_query_cacher.js
+
+#FROM common/browser.js           IMPORT browser
+#FROM common/misc.js              IMPORT is_privileged_url
+#FROM common/policy.js            IMPORT decide_policy
+#FROM content/policy_enforcing.js IMPORT enforce_blocking
+
+let already_run = false, page_info;
+
+function on_page_info_request([type], sender, respond_cb) {
+    if (type !== "page_info")
+	return;
+
+    respond_cb(page_info);
+}
+
+globalThis.haketilo_content_script_main = function() {
+    if (already_run)
+        return;
+
+    already_run = true;
+
+    if (is_privileged_url(document.URL))
+	return;
+
+    browser.runtime.onMessage.addListener(on_page_info_request);
+    repo_query_cacher.start();
+
+    const policy = decide_policy(globalThis.haketilo_pattern_tree,
+				 document.URL,
+				 globalThis.haketilo_defualt_allow,
+				 globalThis.haketilo_secret);
+    page_info = Object.assign({url: document.URL}, policy);
+    ["csp", "nonce"].forEach(prop => delete page_info[prop]);
+
+    enforce_blocking(policy);
+}
+
+function main() {
+    if (globalThis.haketilo_pattern_tree !== undefined)
+	globalThis.haketilo_content_script_main();
+}
+
+#IF !UNIT_TEST
+main();
+#ENDIF