jonasfj

#ifndef MKDIRP_H
#define MKDIRP_H

#include <sys/stat.h>
#include <errno.h>

#define DEFAULT_MODE      S_IRWXU | S_IRGRP |  S_IXGRP | S_IROTH | S_IXOTH

/** Utility function to create directory tree */
bool mkdirp(const char* path, mode_t mode = DEFAULT_MODE) {

jonasfj

// Copyright 2021 Google LLC.
// SPDX-License-Identifier: Apache-2.0

import 'dart:math';

double entropy(String s) {
  final length = s.length.toDouble();
  
  // TODO: Explore if this could be done faster without any allocations, since strings are often short.
  final frequencies = <int, int>{};

jonasfj

// Copyright 2020 Google LLC.
// SPDX-License-Identifier: Apache-2.0

import 'dart:async';
import 'dart:io';

Future<void> main() async {
  var count = 0;
  ProcessSignal.sigint.watch().forEach((s) {
    count++;

jonasfj

Query pubspec.yaml for all packages

When considering introduction of a new field in pubspec.yaml, or wondering how many packages use a certain feature, it can be useful to query all pubspecs from pub.dev. The following notes have some scripts to make this easy.

File yaml2json.sh

Helper script to convert YAML to JSON.

jonasfj

// Copyright 2019 Google LLC.
// SPDX-License-Identifier: Apache-2.0

import 'dart:async' show FutureOr;
import 'dart:async';
import 'dart:convert' show utf8, json;
import 'dart:io' show Directory, Process, IOException, File;
import 'package:http/http.dart' as http;
import 'package:retry/retry.dart' show retry;
import 'package:pool/pool.dart' show Pool;

jonasfj

import aws          from 'aws-sdk-promise';
import url          from 'url';
import https        from 'https';
import fs           from 'mz/fs';
import _            from 'lodash';
import path         from 'path';
import crypto       from 'crypto';

(async function() {

jonasfj

Two simple test files for dart.io.

1. Run dart download.dart
2. Run dart extract.dart

Have fun..

jonasfj

// Copyright 2019 Google LLC.
// SPDX-License-Identifier: Apache-2.0
//
// Experiments with dart, grpc and googleapis
// ==========================================
//
// 1. Install `protoc`
// 2. `pub global activate protoc_plugin`
// 3. `git clone https://github.com/googleapis/googleapis`
// 4. `protoc --dart_out=grpc:lib/src/generated -I googleapis/ -I /usr/local/include/ googleapis/google/cloud/vision/v1/image_annotator.proto`

jonasfj

Tests and Benchmarks for Node Ed25519 libraries and bindings

Mainly looking at using this for signing HTTP(S) requests, as a replacements for HMAC-SHA256, which requires symmetric keys.

Note, we want to this work in browser, python and node. But we only really care about performance in node. Clients that sign request, usually don't make hundreds of these per second. And python servers are slow anyways :)

So if it's fast server side on node, when deployed correctly (ie. without

jonasfj

import requests
from relengapi.lib.permissions import p

def scope_satisfied(req, scopes):
    """
    Returns true, if scopes satisfies req
    """
    return any((
      s == req or (s.endswith('*') and req.startswith(s[:-1])) for s in scopes
    ))