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nodejs: load template from bundled string

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Anthony Donlon
2025-12-22 23:43:07 +08:00
parent 5a5311212e
commit d9af59f14f
11 changed files with 663 additions and 218 deletions
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2
nodejs/.gitignore vendored
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@@ -1,5 +1,7 @@
node_modules/
dist/
*.tgz
*.log
*.html
.DS_Store

537
nodejs/package-lock.json generated
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@@ -12,14 +12,375 @@
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"@rollup/rollup-darwin-x64": "4.54.0",
"@rollup/rollup-freebsd-arm64": "4.54.0",
"@rollup/rollup-freebsd-x64": "4.54.0",
"@rollup/rollup-linux-arm-gnueabihf": "4.54.0",
"@rollup/rollup-linux-arm-musleabihf": "4.54.0",
"@rollup/rollup-linux-arm64-gnu": "4.54.0",
"@rollup/rollup-linux-arm64-musl": "4.54.0",
"@rollup/rollup-linux-loong64-gnu": "4.54.0",
"@rollup/rollup-linux-ppc64-gnu": "4.54.0",
"@rollup/rollup-linux-riscv64-gnu": "4.54.0",
"@rollup/rollup-linux-riscv64-musl": "4.54.0",
"@rollup/rollup-linux-s390x-gnu": "4.54.0",
"@rollup/rollup-linux-x64-gnu": "4.54.0",
"@rollup/rollup-linux-x64-musl": "4.54.0",
"@rollup/rollup-openharmony-arm64": "4.54.0",
"@rollup/rollup-win32-arm64-msvc": "4.54.0",
"@rollup/rollup-win32-ia32-msvc": "4.54.0",
"@rollup/rollup-win32-x64-gnu": "4.54.0",
"@rollup/rollup-win32-x64-msvc": "4.54.0",
"fsevents": "~2.3.2"
}
},
"node_modules/supports-preserve-symlinks-flag": {
"version": "1.0.0",
"resolved": "https://registry.npmjs.org/supports-preserve-symlinks-flag/-/supports-preserve-symlinks-flag-1.0.0.tgz",
"integrity": "sha512-ot0WnXS9fgdkgIcePe6RHNk1WA8+muPa6cSjeR3V8K27q9BB1rTE3R1p7Hv0z1ZyAc8s6Vvv8DIyWf681MAt0w==",
"dev": true,
"license": "MIT",
"engines": {
"node": ">= 0.4"
},
"funding": {
"url": "https://github.com/sponsors/ljharb"
}
},
"node_modules/tslib": {
"version": "2.8.1",
"resolved": "https://registry.npmjs.org/tslib/-/tslib-2.8.1.tgz",
"integrity": "sha512-oJFu94HQb+KVduSUQL7wnpmqnfmLsOA/nAh6b6EH0wCEoK0/mPeXU6c3wKDV83MkOuHPRHtSXKKU99IBazS/2w==",
"dev": true,
"license": "0BSD",
"peer": true
},
"node_modules/typescript": {
"version": "5.9.3",
"resolved": "https://registry.npmjs.org/typescript/-/typescript-5.9.3.tgz",
"integrity": "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==",
"dev": true,
"license": "Apache-2.0",
"peer": true,
"bin": {
"tsc": "bin/tsc",
"tsserver": "bin/tsserver"

8
nodejs/package.json
View File

@@ -6,7 +6,8 @@
"types": "dist/index.d.ts",
"type": "module",
"scripts": {
"build": "tsc",
"build": "node scripts/copy-files.js && rollup -c",
"dev": "rollup -c -w",
"prepublishOnly": "pnpm run build",
"example": "node examples/example.js"
},
@@ -32,9 +33,12 @@
"ejs": "^3.1.10"
},
"devDependencies": {
"@rollup/plugin-typescript": "^12.3.0",
"@rollup/pluginutils": "^5.3.0",
"@types/ejs": "^3.1.5",
"@types/node": "^20.0.0",
"typescript": "^5.3.0"
"rollup": "^4.54.0",
"tslib": "^2.8.1"
},
"files": [
"dist/**/*",

35
nodejs/rollup.config.ts Normal file
View File

@@ -0,0 +1,35 @@
import typescript from "@rollup/plugin-typescript";
import { createFilter } from "@rollup/pluginutils";
// import pkg from './package.json' with { type: 'json' };
function createRawImportPlugin(include: string) {
const rawFilter = createFilter(include);
return {
name: "raw-import",
transform(code: string, id: string): any {
if (rawFilter(id)) {
return {
code: `export default ${JSON.stringify(code)};`,
map: { mappings: "" },
};
}
},
};
}
export default {
input: "src/index.ts",
output: {
// file: pkg.module,
file: "dist/index.js",
format: "esm",
sourcemap: true,
},
watch: {
include: "src/**",
},
external: ["ejs"],
plugins: [typescript(), createRawImportPlugin("**/templates/**")],
};

14
nodejs/scripts/copy-files.js Normal file
View File

@@ -0,0 +1,14 @@
import fs from "node:fs";
import path from "node:path";
import { fileURLToPath } from "node:url";
// Resolve the directory of this script
const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);
// Define paths relative to scripts/copy.js
const src = path.resolve(__dirname, "../../resources/styles/main.css");
const dest = path.resolve(__dirname, "../src/templates/main.css");
// Copy file
fs.copyFileSync(src, dest);

4
nodejs/src/assets.d.ts vendored Normal file
View File

@@ -0,0 +1,4 @@
declare module "./templates/*" {
const content: string;
export default content;
}

80
nodejs/src/index.ts
View File

@@ -1,11 +1,7 @@
import * as fs from "fs";
import * as path from "path";
import { fileURLToPath } from "url";
import * as ejs from "ejs";
import * as crypto from "crypto";
const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);
import templateString from "./templates/template.ejs";
import cssString from "./templates/main.css";
export interface StatusItem {
status?: "ok" | "error";
@@ -55,69 +51,51 @@ export interface ErrorPageParams {
creator_info?: CreatorInfo;
}
/**
* Fill default parameters if not provided
*/
function fillParams(params: ErrorPageParams): ErrorPageParams {
const filledParams = { ...params };
if (!filledParams.time) {
const now = new Date();
filledParams.time =
now.toISOString().replace("T", " ").substring(0, 19) + " UTC";
}
if (!filledParams.ray_id) {
filledParams.ray_id = crypto.randomBytes(8).toString("hex");
}
return filledParams;
}
// Load EJS template
export const baseTemplate: ejs.TemplateFunction = ejs.compile(templateString);
/**
* Escape HTML special characters
* Generate random hex string for ray-id
*/
function escapeHtml(text: string): string {
const htmlEscapeMap: Record<string, string> = {
"&": "&amp;",
"<": "&lt;",
">": "&gt;",
'"': "&quot;",
"'": "&#39;",
};
return text.replace(/[&<>"']/g, (char) => htmlEscapeMap[char] || char);
function genHexString(digits: number): string {
const hex = "0123456789ABCDEF";
let output = "";
for (let i = 0; i < digits; i++) {
output += hex.charAt(Math.floor(Math.random() * hex.length));
}
return output;
}
/**
* Render a customized Cloudflare error page
* @param params - The parameters for the error page
* @param allowHtml - Whether to allow HTML in what_happened and what_can_i_do fields (default: true)
* @param moreArgs - More arguments passed to ejs template
* @returns The rendered HTML string
*/
export function render(
params: ErrorPageParams,
allowHtml: boolean = true
allowHtml: boolean = true,
moreArgs: {
[name: string]: any;
} = {}
): string {
let processedParams = fillParams(params);
params = { ...params };
if (!params.time) {
const now = new Date();
params.time = now.toISOString().replace("T", " ").substring(0, 19) + " UTC";
}
if (!params.ray_id) {
params.ray_id = genHexString(16);
}
if (!allowHtml) {
processedParams = { ...processedParams };
if (processedParams.what_happened) {
processedParams.what_happened = escapeHtml(processedParams.what_happened);
}
if (processedParams.what_can_i_do) {
processedParams.what_can_i_do = escapeHtml(processedParams.what_can_i_do);
}
params.what_happened = ejs.escapeXML(params.what_happened ?? "");
params.what_can_i_do = ejs.escapeXML(params.what_can_i_do ?? "");
}
// Load EJS template
const templatePath = path.join(__dirname, "..", "templates", "error.ejs");
const template = fs.readFileSync(templatePath, "utf-8");
const rendered = ejs.render(template, { params: processedParams });
return rendered;
return baseTemplate({ params, html_style: cssString, ...moreArgs });
}
export default render;

1
nodejs/src/templates/.gitignore vendored Normal file
View File

@@ -0,0 +1 @@
main.css

77
resources/templates/error.ejs → nodejs/src/templates/template.ejs
View File

@@ -4,18 +4,18 @@
<!--[if IE 8]> <html class="no-js ie8 oldie" lang="en-US"> <![endif]-->
<!--[if gt IE 8]><!--> <html class="no-js" lang="en-US"> <!--<![endif]-->
<head>
<%
let error_code = params.error_code || 500;
let title = params.title || 'Internal server error';
let html_title_output = params.html_title || (error_code + ': ' + title);
%>
<title><%= html_title_output %></title>
<% const error_code = params.error_code || 500; %>
<% const title = params.title || 'Internal server error'; %>
<% const html_title = params.html_title || (error_code + ': ' + title); %>
<title><%= html_title %></title>
<meta charset="UTF-8" />
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=Edge" />
<meta name="robots" content="noindex, nofollow" />
<meta name="viewport" content="width=device-width,initial-scale=1" />
<!-- @INLINE_CSS_HERE@ -->
<style>
<%- html_style %>
</style>
</head>
<body>
<div id="cf-wrapper">
@@ -25,10 +25,10 @@ let html_title_output = params.html_title || (error_code + ': ' + title);
<span class="inline-block"><%= title %></span>
<span class="code-label">Error code <%= error_code %></span>
</h1>
<% let more_info = params.more_information || {}; %>
<% const more_info = params.more_information || {}; %>
<% if (!more_info.hidden) { %>
<div>
Visit <a href="<%= more_info.link || 'https://www.cloudflare.com/' %>" target="_blank" rel="noopener noreferrer"><%= more_info.text || 'cloudflare.com' %></a> for <%= more_info.for || "more information" %>.
Visit <a href="<%= more_info.link || 'https://www.cloudflare.com/' %>" target="_blank" rel="noopener noreferrer"><%= more_info.text || 'cloudflare.com' %></a> for <%= more_info.for || 'more information' %>.
</div>
<% } %>
<div class="<%= more_info.hidden ? '' : 'mt-3' %>"><%= params.time %></div>
@@ -36,27 +36,16 @@ let html_title_output = params.html_title || (error_code + ': ' + title);
<div class="my-8 bg-gradient-gray">
<div class="w-240 lg:w-full mx-auto">
<div class="clearfix md:px-8">
<% for (let item_id of ['browser', 'cloudflare', 'host']) { %>
<%
let icon, default_location, default_name, text_color, status_text;
if (item_id === 'browser') {
icon = 'browser';
default_location = 'You';
default_name = 'Browser';
} else if (item_id === 'cloudflare') {
icon = 'cloud';
default_location = 'San Francisco';
default_name = 'Cloudflare';
} else {
icon = 'server';
default_location = 'Website';
default_name = 'Host';
}
let item = params[item_id + '_status'] || {};
let status = item.status || 'ok';
const items = [
{ id: 'browser', icon: 'browser', default_location: 'You', default_name: 'Browser' },
{ id: 'cloudflare', icon: 'cloud', default_location: 'San Francisco', default_name: 'Cloudflare' },
{ id: 'host', icon: 'server', default_location: 'Website', default_name: 'Host' }
];
items.forEach(({ id, icon, default_location, default_name }) => {
const item = params[id + '_status'] || {};
const status = item.status || 'ok';
let text_color;
if (item.status_text_color) {
text_color = item.status_text_color;
} else if (status === 'ok') {
@@ -64,27 +53,19 @@ let html_title_output = params.html_title || (error_code + ': ' + title);
} else if (status === 'error') {
text_color = '#bd2426'; // text-red-error
}
status_text = item.status_text || (status === 'ok' ? 'Working' : 'Error');
const status_text = item.status_text || (status === 'ok' ? 'Working' : 'Error');
const is_error_source = params.error_source === id;
%>
<div id="cf-<%= item_id %>-status" class="<% if (params.error_source === item_id) { %>cf-error-source<% } %> relative w-1/3 md:w-full py-15 md:p-0 md:py-8 md:text-left md:border-solid md:border-0 md:border-b md:border-gray-400 overflow-hidden float-left md:float-none text-center">
<div id="cf-<%= id %>-status" class="<%= is_error_source ? 'cf-error-source' : '' %> relative w-1/3 md:w-full py-15 md:p-0 md:py-8 md:text-left md:border-solid md:border-0 md:border-b md:border-gray-400 overflow-hidden float-left md:float-none text-center">
<div class="relative mb-10 md:m-0">
<span class="cf-icon-<%= icon %> block md:hidden h-20 bg-center bg-no-repeat"></span>
<span class="cf-icon-<%= status %> w-12 h-12 absolute left-1/2 md:left-auto md:right-0 md:top-0 -ml-6 -bottom-4"></span>
</div>
<span class="md:block w-full truncate"><%= item.location || default_location %></span>
<%
let _name_style;
if ((item.name || default_name) === 'Cloudflare') {
_name_style = 'style="color: #2f7bbf;"'
} else{
_name_style = ''
}
%>
<h3 class="md:inline-block mt-3 md:mt-0 text-2xl text-gray-600 font-light leading-1.3" <%-_name_style %>><%= item.name || default_name %></h3>
<h3 class="md:inline-block mt-3 md:mt-0 text-2xl text-gray-600 font-light leading-1.3" <%- (item.name || default_name) === 'Cloudflare' ? 'style="color: #2f7bbf;"' : '' %>><%= item.name || default_name %></h3>
<span class="leading-1.3 text-2xl" style="color: <%= text_color %>"><%= status_text %></span>
</div>
<% } %>
<% }); %>
</div>
</div>
</div>
@@ -93,11 +74,11 @@ let html_title_output = params.html_title || (error_code + ': ' + title);
<div class="clearfix">
<div class="w-1/2 md:w-full float-left pr-6 md:pb-10 md:pr-0 leading-relaxed">
<h2 class="text-3xl font-normal leading-1.3 mb-4">What happened?</h2>
<%= (params.what_happened || 'There is an internal server error on Cloudflare\'s network.') %>
<%- params.what_happened || '<p>There is an internal server error on Cloudflare\'s network.</p>' %>
</div>
<div class="w-1/2 md:w-full float-left leading-relaxed">
<h2 class="text-3xl font-normal leading-1.3 mb-4">What can I do?</h2>
<%= (params.what_can_i_do || 'Please try again in a few minutes.') %>
<%- params.what_can_i_do || '<p>Please try again in a few minutes.</p>' %>
</div>
</div>
</div>
@@ -112,8 +93,14 @@ let html_title_output = params.html_title || (error_code + ': ' + title);
<span class="hidden" id="cf-footer-ip"><%= params.client_ip || '1.1.1.1' %></span>
<span class="cf-footer-separator sm:hidden">&bull;</span>
</span>
<% let perf_sec_by = params.perf_sec_by || {}; %>
<% const perf_sec_by = params.perf_sec_by || {}; %>
<span class="cf-footer-item sm:block sm:mb-1"><span>Performance &amp; security by</span> <a rel="noopener noreferrer" href="<%= perf_sec_by.link || 'https://www.cloudflare.com/' %>" id="brand_link" target="_blank"><%= perf_sec_by.text || 'Cloudflare' %></a></span>
<% const creator_info = params.creator_info || {}; %>
<% if (!(creator_info.hidden ?? true)) { %>
<span class="cf-footer-separator sm:hidden">&bull;</span>
<span class="cf-footer-item sm:block sm:mb-1">Created with <a href="<%= creator_info.link %>" target="_blank"><%= creator_info.text %></a></span>
<% } %>
</p>
</div><!-- /.error-footer -->
</div>

110
nodejs/templates/error.ejs
View File

File diff suppressed because one or more lines are too long

5
scripts/inline_resources.py
View File

@@ -65,8 +65,3 @@ def generate_inlined_css():
if __name__ == '__main__':
generate_inlined_css()
inline_css_resource(
os.path.join(resources_folder, 'templates/error.ejs'),
os.path.join(resources_folder, 'styles/main.css'),
os.path.join(root, 'editor/web/src/template.ejs'),
)