[Stack Exchange] add new fix to enable registrations

6 files changed, 127 insertions, 7 deletions

diff --git a/src/stack-exchange-fix-cookienotice/LICENSES/Apache-2.0.txt b/src/stackexchange-com-fixes/LICENSES/Apache-2.0.txt
index 137069b..137069b 100644
--- a/src/stack-exchange-fix-cookienotice/LICENSES/Apache-2.0.txt
+++ b/src/stackexchange-com-fixes/LICENSES/Apache-2.0.txt
diff --git a/src/stack-exchange-fix-cookienotice/LICENSES/CC0-1.0.txt b/src/stackexchange-com-fixes/LICENSES/CC0-1.0.txt
index 0e259d4..0e259d4 100644
--- a/src/stack-exchange-fix-cookienotice/LICENSES/CC0-1.0.txt
+++ b/src/stackexchange-com-fixes/LICENSES/CC0-1.0.txt
diff --git a/src/stack-exchange-fix-cookienotice/index.json b/src/stackexchange-com-fixes/index.json
index 095fdec..961dfc8 100644
--- a/src/stack-exchange-fix-cookienotice/index.json
+++ b/src/stackexchange-com-fixes/index.json
@@ -5,21 +5,20 @@
 
 {
     "$schema": "https://hydrilla.koszko.org/schemas/package_source-2.schema.json",
-    "source_name": "stack-exchange-fix-cookienotice",
+    "source_name": "stackexchange-com-fixes",
     "copyright":  [
 	{"file": "report.spdx"},
 	{"file": "LICENSES/Apache-2.0.txt"},
 	{"file": "LICENSES/CC0-1.0.txt"}
     ],
-    "upstream_url": "https://git.koszko.org/hydrilla-fixes-bundle/tree/src/stack-exchange-fix-cookienotice",
+    "upstream_url": "https://git.koszko.org/hydrilla-fixes-bundle/tree/src/stackexchange-com-fixes",
     "definitions": [{
-
 	"type":         "mapping_and_resource",
 	"identifier":   "stack-exchange-fix-cookienotice",
-	"long_name":    "StackExchange cookie notice fix",
-	"version":      [2022, 2, 18],
-	"revision":     2,
-	"description":  "Make cookie notice on StackExchange websites closable without relying on site-served JavaScript.",
+	"long_name":    "Stack Exchange cookie notice fix",
+	"version":      [2022, 8, 27],
+	"revision":     1,
+	"description":  "Make cookie notice on Stack Exchange websites closable without relying on site-served JavaScript.",
 	"dependencies": [],
 	"scripts":      [{"file": "stack_exchange_cookienotice.js"}],
 	"payloads": {
@@ -58,6 +57,38 @@
 		"identifier": "stack-exchange-fix-cookienotice"
 	    }
 	}
+    }, {
+	"type":         "mapping_and_resource",
+	"identifier":   "meta-stackexchange-com-fix-login-redirect",
+	"long_name":    "Stack Exchange login redirect fix",
+        "uuid":         "3f006539-f43f-4f71-998a-6a7ce0ebf4b3",
+	"version":      [2022, 8, 27],
+	"revision":     1,
+	"description":  "Make automatic redirect on Stack Exchange login page work without relying on site-served JavaScript.",
+	"dependencies": [],
+	"scripts":      [{"file": "login-redirect.js"}],
+	"payloads": {
+	    "https://meta.stackexchange.com/users/login": {
+		"identifier": "meta-stackexchange-com-fix-login-redirect"
+	    }
+	}
+    }, {
+	"type":              "mapping_and_resource",
+	"identifier":        "meta-stackexchange-com-fix-register",
+	"long_name":         "Stack Exchange registration fix",
+	"uuid":              "e0a00885-bac6-43e8-a8ea-e013f733c8cf",
+	"version":           [2022, 8, 27],
+	"revision":          1,
+	"description":       "Enable registration of a Stack Exchange account without relying on site-served JavaScript.",
+	"dependencies":      [{"identifier": "stack-exchange-fix-cookienotice"}, {"identifier": "hacktcha"}],
+	"required_mappings": [{"identifier": "meta-stackexchange-com-fix-login-redirect"}, {"identifier": "stack-exchange-fix-cookienotice"}],
+	"scripts":           [{"file": "register.js"}],
+	"payloads": {
+	    // * https://meta.stackexchange.com/users/signup
+	    "https://meta.stackexchange.com/users/signup": {
+		"identifier": "meta-stackexchange-com-fix-register"
+	    }
+	}
     }],
     "reuse_generate_spdx_report": true
 }
diff --git a/src/stackexchange-com-fixes/login-redirect.js b/src/stackexchange-com-fixes/login-redirect.js
new file mode 100644
index 0000000..60c4e39
--- /dev/null
+++ b/src/stackexchange-com-fixes/login-redirect.js
@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: CC0-1.0
+ *
+ * Fix automatic redirect on Stack Exchange login page.
+ *
+ * Copyright (C) 2022 Wojtek Kosior
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the CC0 1.0 Universal License as published by
+ * the Creative Commons Corporation.
+ *
+ * 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
+ * CC0 1.0 Universal License for more details.
+ */
+
+/* Use with https://meta.stackexchange.com/users/login */
+
+const redirect_link = document.querySelector(".manual-redirect a");
+if (redirect_link !== null)
+    window.location.href = redirect_link.href;
diff --git a/src/stackexchange-com-fixes/register.js b/src/stackexchange-com-fixes/register.js
new file mode 100644
index 0000000..b00dba1
--- /dev/null
+++ b/src/stackexchange-com-fixes/register.js
@@ -0,0 +1,68 @@
+/* SPDX-License-Identifier: CC0-1.0
+ *
+ * Use Hacktcha on Stack Exchange registration page.
+ *
+ * Copyright (C) 2022 Wojtek Kosior
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the CC0 1.0 Universal License as published by
+ * the Creative Commons Corporation.
+ *
+ * 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
+ * CC0 1.0 Universal License for more details.
+ */
+
+/* Use with https://meta.stackexchange.com/users/signup */
+
+/* Load captcha-parent.js first. */
+
+(async () => {
+    const captcha_div = document.createElement("div");
+    const submit_but  = document.getElementById("submit-button");
+    const token_field = document.createElement("textarea");
+
+    /*
+     * Let's remove <noscript> tag with the original reCAPTCHA iframe and an
+     * unnecessary button.
+     */
+    document.querySelector("#no-captcha-here + *").remove();
+    for (const elem of [...captcha_div.childNodes])
+        elem.remove();
+
+    token_field.name = "g-recaptcha-response";
+    token_field.style.display = "none";
+
+    document.getElementById("no-captcha-here").after(token_field);
+    token_field.after(captcha_div);
+
+    /*
+     * The reCAPTCHA site key is present in 2 places: in a script and in fallback iframe's
+     * URL. Let's use the former as the source for now.
+     */
+    let site_key;
+    const site_key_regex = /['"]sitekey['"]\s*:\s*['"]([a-zA-Z0-9-]+)['"]/;
+
+    for (const script of document.scripts) {
+        match = site_key_regex.exec(script.textContent);
+        if (match !== null)
+            site_key = match[1];
+    }
+
+    if (site_key === null) {
+        console.error("Could not extract site key :(");
+        return;
+    }
+
+    submit_but.setAttribute("disabled", "");
+
+    for await (const token of HCHA.run(captcha_div, site_key)) {
+	if (token === null) {
+	    submit_but.setAttribute("disabled", "");
+	} else {
+	    token_field.value = token;
+	    submit_but.removeAttribute("disabled");
+	}
+    }
+})();
diff --git a/src/stack-exchange-fix-cookienotice/stack_exchange_cookienotice.js b/src/stackexchange-com-fixes/stack_exchange_cookienotice.js
index 37a42ac..37a42ac 100644
--- a/src/stack-exchange-fix-cookienotice/stack_exchange_cookienotice.js
+++ b/src/stackexchange-com-fixes/stack_exchange_cookienotice.js