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DOCS: Removed the SPF flattener (#2146)
Co-authored-by: Tom Limoncelli <tlimoncelli@stackoverflow.com>
This commit is contained in:
Jeffrey Cafferata
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@ -1,62 +0,0 @@
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<html >
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<head>
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<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" integrity="sha384-1q8mTJOASx8j1Au+a5WDVnPi2lkFfwwEAa8hDDdjZlpLegxhjVME1fgjWPGmkzs7" crossorigin="anonymous">
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<script src="https://code.jquery.com/jquery-3.2.1.min.js"></script>
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<script src="flattener.js"></script>
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<style>
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ul {
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margin: 0px 0px 0px 20px;
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list-style: none;
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line-height: 2em;
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font-family: Arial;
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}
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ul li {
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font-size: 16px;
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position: relative;
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}
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ul li:before {
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position: absolute;
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left: -15px;
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top: 0px;
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content: '';
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display: block;
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border-left: 1px solid #ddd;
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height: 1em;
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border-bottom: 1px solid #ddd;
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width: 10px;
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}
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ul li:after {
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position: absolute;
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left: -15px;
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bottom: -7px;
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content: '';
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display: block;
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border-left: 1px solid #ddd;
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height: 100%;
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}
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ul li.root {
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margin: 0px 0px 0px -20px;
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}
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ul li.root:before {
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display: none;
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}
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ul li.root:after {
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display: none;
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}
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ul li:last-child:after {
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display: none;
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}
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</style>
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</head>
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<body>
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<div class='container' style='padding-bottom:50px'>
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<input type="text" id="domain" value="stackoverflow.com"></input>
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<button id="lookup_btn">Lookup</button>
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<div id="results"></div>
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<div id="flattened"></div>
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</div>
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</body>
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@ -1,159 +0,0 @@
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//go:build js
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// +build js
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package main
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import (
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"encoding/json"
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"fmt"
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"net/http"
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"strings"
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"github.com/StackExchange/dnscontrol/v3/pkg/spflib"
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"github.com/gopherjs/jquery"
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)
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type gResolver struct{}
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type gResp struct {
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Status int
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Answer []struct {
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Data string `json:"data"`
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}
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}
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func (g gResolver) GetSPF(fqdn string) (string, error) {
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resp, err := http.Get("https://dns.google.com/resolve?type=txt&name=" + fqdn)
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if err != nil {
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return "", err
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}
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defer resp.Body.Close()
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dec := json.NewDecoder(resp.Body)
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dat := &gResp{}
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if err = dec.Decode(dat); err != nil {
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return "", err
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}
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for _, a := range dat.Answer {
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val := strings.Trim(a.Data, "\"")
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if strings.HasPrefix(val, "v=spf1 ") {
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return val, nil
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}
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}
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return "", fmt.Errorf("No spf records found")
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}
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var jq = jquery.NewJQuery
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var parsed *spflib.SPFRecord
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var domain string
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var resolver = gResolver{}
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func main() {
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jq(func() {
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jq("#lookup_btn").On(jquery.CLICK, func(e jquery.Event) {
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go func() {
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domain = jq("#domain").Val()
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text, err := resolver.GetSPF(domain)
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fmt.Println(text)
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if err != nil {
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panic(err)
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}
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parsed, err = spflib.Parse(text, resolver)
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if err != nil {
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panic(err)
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}
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jq("#results").SetHtml(buildHTML(parsed, domain))
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jq(".cb").On(jquery.CHANGE, func(e jquery.Event) {
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updateDisabledChecks()
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renderResults()
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})
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updateDisabledChecks()
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renderResults()
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}()
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})
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})
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}
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func updateDisabledChecks() {
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jq("input:checkbox").Each(func(i int, el interface{}) {
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fmt.Println(jq(el).Prop("disabled"))
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jq(el).SetProp("disabled", false)
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})
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jq("input:checkbox:not(:checked)").Each(func(i int, el interface{}) {
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fmt.Println(jq(el).Attr("id"))
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jq(el).Next().Next().Find("input:checkbox").Each(func(i int, el interface{}) {
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fmt.Println("^^", jq(el).Attr("id"))
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jq(el).SetProp("disabled", true)
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})
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})
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}
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func renderResults() {
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content := ""
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addFlattened := func(mode string, filter string) {
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flat := parsed.Flatten(filter)
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lookups := 0
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if filter != "*" {
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lookups = parsed.Lookups() - len(strings.Split(filter, ","))
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}
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content += fmt.Sprintf(`
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<h3> %s flattened (length %d, %d lookups)</h3><code>%s</code>
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`, mode, len(flat.TXT()), lookups, flat.TXT())
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split := flat.TXTSplit("_spf%d."+domain, 0, 255)
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if len(split) > 1 {
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lookups += len(split) - 1
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content += fmt.Sprintf("<h3>%s flattened split (%d lookups)</h3>", mode, lookups)
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for k, v := range split {
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content += fmt.Sprintf("<h4>%s</h4><code>%s</code>", k, v)
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}
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}
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}
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addFlattened("Fully", "*")
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// look for selected divs
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filters := []string{}
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jq("input:checked").Each(func(i int, el interface{}) {
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filters = append(filters, jq(el).Attr("id"))
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})
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if len(filters) > 0 {
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addFlattened("Selectively", strings.Join(filters, ","))
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}
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jq("#flattened").SetHtml(content)
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}
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func buildHTML(rec *spflib.SPFRecord, domain string) string {
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h := "<h1>" + domain + "</h1>"
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h += fmt.Sprintf("<h2>%d lookups</h2>", rec.Lookups())
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return h + genRoot(rec)
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}
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// html based on https://codepen.io/khoama/pen/hpljA
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func genRoot(rec *spflib.SPFRecord) string {
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h := fmt.Sprintf(`
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<ul>
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<li class='root'>%s</li>
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`, rec.TXT())
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for _, p := range rec.Parts {
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h += genPart(p)
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}
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h += "</ul>"
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return h
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}
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func genPart(rec *spflib.SPFPart) string {
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if !rec.IsLookup {
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return fmt.Sprintf(`<li>%s</li>`, rec.Text)
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}
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h := fmt.Sprintf(`<li>
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<input type="checkbox" class='cb' id="%s" name="%s" />
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<label for="%s">%s(%d lookups)</label>`, rec.IncludeDomain, rec.IncludeDomain, rec.IncludeDomain, rec.Text, rec.IncludeRecord.Lookups()+1)
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h += fmt.Sprintf("<ul>")
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for _, p := range rec.IncludeRecord.Parts {
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h += genPart(p)
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}
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h += "</ul>"
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h += "</li>"
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return h
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}
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