RHMAP Studio email extractor for Mailshots

rhmapusers-email-extract.go

/*

RHMAP Studio email extractor for Mailshots

Copyright Conor O'Neill 2016, [email protected]
MIT License https://opensource.org/licenses/MIT

You may need to create a User API key in your Profile in the Studio called X-FH-AUTH-USER

Then:
[1] Login to an RHMAP Studio e.g. https://prod-demos-emea.redhat.feedhenry.com/#admin/users or Chrome Inspect the "feedhenry" cookie value
[2] Or get the feedhenry cookie value by logging into a domain with fhc and seeing its value in fhcrc file in your user directory
[3] curl -H "Content-Type: application/json" --cookie "feedhenry=blahblah"  https://prod-demos-emea.redhat.feedhenry.com/box/srv/1.1/admin/user/list

Also create conf.json in your working directory which looks like this and put the cookie in APIKey (I know I know!):
{
    "APIKey": "blahblah",
    "UserURL": "https://prod-demos-emea.redhat.feedhenry.com/box/srv/1.1/admin/user/list"
}

Email addresses are saved to emails.csv

Also use this afterwards to get only Red Hatters: grep -i 'redhat' emails.csv > redhatters.csv
Note: Do not run any of this stuff in Windows Powershell. It outputs with UCS2 encoding which messes everything up. Use CMD instead.

*/

package main

import (
	"encoding/json"
	"fmt"
	"net/http"
	"os"
	"strconv"
	"strings"

	"github.com/jmoiron/jsonq"
)

type configuration struct {
	APIKey  string
	UserURL string
}

func main() {

	configfile, _ := os.Open("conf.json")
	decoder := json.NewDecoder(configfile)
	configuration := configuration{}
	err := decoder.Decode(&configuration)
	if err != nil {
		fmt.Println("config error:", err)
	}

	ofile, err := os.Create("./emails.csv")
	if err != nil {
		fmt.Printf("Output File error: %v\n", err)
		os.Exit(1)
	}

	defer ofile.Close()

	client := &http.Client{}

	req, err := http.NewRequest("GET", configuration.UserURL, nil)
	rawCookies := "feedhenry=" + configuration.APIKey
	req.Header.Set("Cookie", rawCookies)
	//req.Header.Add("X-FH-AUTH-USER", configuration.APIKey)
	response, err := client.Do(req)

	if err != nil {
		fmt.Printf("%s", err)
		os.Exit(1)
	}
	defer response.Body.Close()

	data := map[string]interface{}{}
	dec := json.NewDecoder(response.Body)
	dec.Decode(&data)
	jq := jsonq.NewQuery(data)

	emails := 0
	for {
		email, err := jq.String("list", strconv.Itoa(emails), "fields", "email")
		if err != nil {
			if strings.Contains(err.Error(), "out of bounds") {
				ofile.Sync()
				fmt.Println("Done!")
				os.Exit(1)
			} else {
				fmt.Println(err)
				os.Exit(1)
			}
		}
		n, err := ofile.WriteString(fmt.Sprintf("%s\n", email))
		if err != nil {
			fmt.Println(n, err)
		}
		emails++
	}
}

Fixed out-of-bounds error