Refactor random MXID and password generator

Change-Id: Ifd8afde0a294adba2d28ca4f620e298aac9a1fa6

src/components/ImportFeature.tsx

@@ -17,7 +17,7 @@ import {
   NativeSelect,
 } from "@mui/material";
 import { DataProvider, useTranslate } from "ra-core";
-import { generateRandomUser } from "./users";
+import { generateRandomMxId, generateRandomPassword } from "../synapse/synapse";
 
 const LOGGING = true;
 
@@ -270,38 +270,16 @@ const FilePicker = () => {
     try {
       setProgress({ done: entriesDone, limit: entriesCount });
       for (const entry of data) {
-        let userRecord = {};
-        let overwriteData = {};
+        const userRecord = { ...entry };
         // No need to do a bunch of cryptographic random number getting if
         // we are using neither a generated password nor a generated user id.
-        if (
-          useridMode === "ignore" ||
-          entry.id === undefined ||
-          entry.password === undefined ||
-          passwordMode === false
-        ) {
-          overwriteData = generateRandomUser();
-          // Ignoring IDs or the entry lacking an ID means we keep the
-          // ID field in the overwrite data.
-          if (!(useridMode === "ignore" || entry.id === undefined)) {
-            delete overwriteData.id;
-          }
-
-          // Not using passwords from the csv or this entry lacking a password
-          // means we keep the password field in the overwrite data.
-          if (
-            !(
-              passwordMode === false ||
-              entry.password === undefined ||
-              entry.password === ""
-            )
-          ) {
-            delete overwriteData.password;
-          }
+        if (useridMode === "ignore" || userRecord.id === undefined) {
+          userRecord.id = generateRandomMxId();
+        }
+        if (passwordMode === false || entry.password === undefined) {
+          userRecord.password = generateRandomPassword();
         }
         /* TODO record update stats (especially admin no -> yes, deactivated x -> !x, ... */
-        Object.assign(userRecord, entry);
-        Object.assign(userRecord, overwriteData);
 
         /* For these modes we will consider the ID that's in the record.
          * If the mode is "stop", we will not continue adding more records, and
@@ -346,9 +324,8 @@ const FilePicker = () => {
                   })
                 );
               } else {
-                const overwriteData = generateRandomUser();
                 const newRecordData = Object.assign({}, recordData, {
-                  id: overwriteData.id,
+                  id: generateRandomMxId(),
                 });
                 retries++;
                 if (retries > 512) {

src/components/users.tsx

@@ -154,47 +154,6 @@ const validateUser = [
 
 const validateAddress = [required(), maxLength(255)];
 
-export function generateRandomUser() {
-  const homeserver = localStorage.getItem("home_server");
-  const user_id =
-    "@" +
-    Array(8)
-      .fill("0123456789abcdefghijklmnopqrstuvwxyz")
-      .map(
-        x =>
-          x[
-            Math.floor(
-              (crypto.getRandomValues(new Uint32Array(1))[0] /
-                (0xffffffff + 1)) *
-                x.length
-            )
-          ]
-      )
-      .join("") +
-    ":" +
-    homeserver;
-
-  const password = Array(20)
-    .fill(
-      "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz~!@-#$"
-    )
-    .map(
-      x =>
-        x[
-          Math.floor(
-            (crypto.getRandomValues(new Uint32Array(1))[0] / (0xffffffff + 1)) *
-              x.length
-          )
-        ]
-    )
-    .join("");
-
-  return {
-    id: user_id,
-    password: password,
-  };
-}
-
 const UserEditActions = () => {
   const record = useRecordContext();
   const translate = useTranslate();

src/synapse/synapse.ts

@@ -58,3 +58,28 @@ export const getMediaUrl = media_id => {
   const baseUrl = localStorage.getItem("base_url");
   return `${baseUrl}/_matrix/media/v1/download/${media_id}?allow_redirect=true`;
 };
+
+/**
+ * Generate a random MXID for current homeserver
+ * @returns full MXID as string
+ */
+export function generateRandomMxId(): string {
+  const homeserver = localStorage.getItem("home_server");
+  const characters = "0123456789abcdefghijklmnopqrstuvwxyz";
+  const localpart = Array.from(crypto.getRandomValues(new Uint32Array(8)))
+    .map(x => characters[x % characters.length])
+    .join("");
+  return `@${localpart}:${homeserver}`;
+}
+
+/**
+ * Generate a random user password
+ * @returns a new random password as string
+ */
+export function generateRandomPassword(length = 20): string {
+  const characters =
+    "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz~!@-#$";
+  return Array.from(crypto.getRandomValues(new Uint32Array(length)))
+    .map(x => characters[x % characters.length])
+    .join("");
+}