where

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commit 48f5447aa994235cd663703ece06600c31c78ae0
Author: aabacchus <bvnfuller@gmail.com>
Date:   Fri, 19 Mar 2021 12:42:46 +0000

initial commit: uses a copy of who --ips output and parses

Diffstat:
A.gitignore | 2++
ALICENSE | 202+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Ago.mod | 3+++
Awhere.go | 125+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
4 files changed, 332 insertions(+), 0 deletions(-)

diff --git a/.gitignore b/.gitignore @@ -0,0 +1,2 @@ +creds.json +where diff --git a/LICENSE b/LICENSE @@ -0,0 +1,202 @@ + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. Definitions. + + "License" shall mean the terms and conditions for use, reproduction, + and distribution as defined by Sections 1 through 9 of this document. + + "Licensor" shall mean the copyright owner or entity authorized by + the copyright owner that is granting the License. + + "Legal Entity" shall mean the union of the acting entity and all + other entities that control, are controlled by, or are under common + control with that entity. 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We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. + + Copyright [yyyy] [name of copyright owner] + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + diff --git a/go.mod b/go.mod @@ -0,0 +1,3 @@ +module github.com/aabacchus/where + +go 1.15 diff --git a/where.go b/where.go @@ -0,0 +1,125 @@ +/* Copyright © 2021 aabacchus + * Apache License, Version 2.0 + * See LICENSE file for copyright and license details. + * + * Copyright (c) 2015 Matt Baer + * MIT license + */ + +// this program is a rewrite of [https://github.com/thebaer]'s tildes/where +// (MIT licence) +// which plots a map of the locations of ctrl-c.club users. +// However, that project has not been updated for several years, and it has a +// small issue with showing many IPs at the location (0,0). +// Therefore, as an excercise in Go and for the benefit of the ctrl-c.club community, +// I'm trying to make what is basically the same thing. +package main + +import ( + "encoding/json" + "flag" + "fmt" + "io/ioutil" + "net/http" + "os" + "strings" +) + +func main() { + apiKey := flag.String("k", "", "API key for ipstack") + flag.Parse() + + ips, err := getTestIps("whoips") + if err != nil { + fmt.Printf("error reading sample who --ips file: %s\n", err.Error) + os.Exit(1) + } + lines := parseLines(ips) + var results = make([]person, len(lines)) + for i, line := range lines { + if len(line) > 5 { + // if there's something messy with mosh, ignore it (for now) + continue + } + resp, err := ipLatLng(*apiKey, line[4]) + if err != nil { + fmt.Println(err) + continue + } + results[i] = person{ + Uname: line[0], + Lat: resp.Lat, + Lng: resp.Lng, + } + + } + fmt.Println(results) + +} + +type person struct { + Uname string + Lat, Lng float64 +} + +func parseLines(ips []byte) [][]string { + var word string + var words [][]string + var line int = 0 + words = append(words, []string{}) + for _, ip := range ips { + if ip == ' ' { + if word == "" { + continue + } + words[line] = append(words[line], word) + word = "" + continue + } + if ip == '\n' { + words[line] = append(words[line], word) + words = append(words, []string{}) + line++ + word = "" + continue + } + word = word + string(ip) + } + words = words[:len(words)-1] + return words +} + +func ipLatLng(apikey string, ips ...string) (IPResponse, error) { + query := fmt.Sprintf("http://api.ipstack.com/%s?access_key=%s", strings.Join(ips, ","), apikey) + resp, err := http.Get(query) + if err != nil { + return IPResponse{}, err + } + defer resp.Body.Close() + bytes, err := ioutil.ReadAll(resp.Body) + if err != nil { + return IPResponse{}, err + } + places := IPResponse{} + + if err := json.Unmarshal(bytes, &places); err != nil { + return IPResponse{}, err + } + return places, nil +} + +// IPResponse is a simple struct wrapping relevant responses from the ipstack API +type IPResponse struct { + ip string `json:"ip"` + Lat float64 `json:"latitude"` + Lng float64 `json:"longitude"` +} + +func getTestIps(fname string) ([]byte, error) { + f, err := os.Open(fname) + defer f.Close() + if err != nil { + return []byte{}, err + } + return ioutil.ReadAll(f) +}