diff options
| author | Luke Shumaker <lukeshu@sbcglobal.net> | 2016-11-18 01:21:27 -0500 |
|---|---|---|
| committer | Luke Shumaker <lukeshu@sbcglobal.net> | 2016-11-18 01:21:27 -0500 |
| commit | c4f6d3489ef91c539ba88e372635e4d0d87e6ad2 (patch) | |
| tree | fbfc8755e3ba011e789723e4407b908b39bd5aad /pem2html.go | |
| parent | e339617040bde6ef57f4ccc896f9feba60dbe12f (diff) | |
Check crt.sh against actual used certs
Diffstat (limited to 'pem2html.go')
| -rw-r--r-- | pem2html.go | 207 |
1 files changed, 0 insertions, 207 deletions
diff --git a/pem2html.go b/pem2html.go deleted file mode 100644 index b6effa4..0000000 --- a/pem2html.go +++ /dev/null @@ -1,207 +0,0 @@ -package main - -import ( - "crypto/x509" - "encoding/pem" - "fmt" - "html/template" - "io/ioutil" - "os" - "sort" - "time" -) - -func handleErr(err error, str string, a ...interface{}) { - a = append([]interface{}{err}, a...) - if err != nil { - fmt.Fprintf(os.Stderr, str, a...) - os.Exit(1) - } -} - -func handleBool(ok bool, str string, a ...interface{}) { - if !ok { - fmt.Fprintf(os.Stderr, str, a...) - } -} - -var tmpl = template.Must(template.New("pem2html"). - Funcs(template.FuncMap{ - "red": red, - "green": green, - }).Parse(`<!DOCTYPE html> -<html lang="en"> -<head> - <meta charset="utf-8"> - <title>CT log</title> - <style> - html { - height: 100%; - } - body { - font-size: 10px; - font-family: monospace; - height: 100%; - margin: 0; - display: flex; - align-items: center; - } - body > * { - margin: auto; - } - table { - border-collapse: collapse; - } - caption p { - margin: 0; - } - td, th { - padding: 0; - border: solid 1px black; - white-space: nowrap; - } - td { - background-color: #F3F3F3; - } - tr:hover td { - background-color: #AAAAF3 !important; - } - td a { - padding: 0.1em 0.25em; - display: block; - width: 100%; - height: 100%; - color: black; - } - </style> - <script src="sorttable.js"></script> -</head> -<body> -<table class=sortable> - <caption> - <p>Updated {{.now.Local.Format "2006-01-02 15:04:05"}}</p> - </caption> - <tr> - <th>Logged</th> - <th>NotBefore</th> - <th>NotAfter</th> - <th>Subject.CN</th> - <th>Issuer.O</th> - </tr> -{{range $cert := .certs}} - <tr> - <td style="background-color: {{$cert.Updated | green}}"><a target="_blank" href="{{$cert.Url}}">{{$cert.Updated.Local.Format "2006-01-02 15:04:05"}}</a></td> - <td><a target="_blank" href="{{$cert.Url}}">{{$cert.X509.NotBefore.Local.Format "2006-01-02"}}</a></td> - <td style="background-color: {{$cert.X509.NotAfter | red}}"><a target="_blank" href="{{$cert.Url}}">{{$cert.X509.NotAfter.Local.Format "2006-01-02"}}</a></td> - <td><a target="_blank" href="{{$cert.Url}}">{{$cert.X509.Subject.CommonName}}</a></td> - <td><a target="_blank" href="{{$cert.Url}}">{{$cert.X509.Issuer.Organization}}</a></td> - </tr> -{{end}} -</table> -</body> -</html> -`)) - -var now = time.Now() - -type interpolation struct { - ta, tb time.Time - ba, bb byte -} - -func (i interpolation) interpolate(tc time.Time) byte { - db := i.tb.Sub(i.ta) - dc := tc.Sub(i.ta) - - pct := float64(dc) / float64(db) - if pct < 0 { - pct = 0 - } else if pct > 1 { - pct = 1 - } - - sb := int16(i.bb) - int16(i.ba) - sc := int16(pct * float64(sb)) - - return byte(int16(i.ba) + sc) -} - -var daysago = interpolation{ - ta: now.AddDate(0, 0, -30), - tb: now, - ba: 0xF3, - bb: 0x00, -} - -var daysuntil = interpolation{ - ta: now, - tb: now.AddDate(0, 0, 30), - ba: 0x00, - bb: 0xF3, -} - -func green(t time.Time) string { - b := daysago.interpolate(t) - return fmt.Sprintf("#%02X%02X%02X", b, 0xF3, b) -} - -func red(t time.Time) string { - b := daysuntil.interpolate(t) - return fmt.Sprintf("#%02X%02X%02X", 0xF3, b, b) -} - -type Cert struct { - Url string - Updated time.Time - X509 *x509.Certificate -} - -type Certs []Cert - -// Len is the number of elements in the collection. -func (l Certs) Len() int { - return len(l) -} - -// Less reports whether the element with -// index i should sort before the element with index j. -func (l Certs) Less(i, j int) bool { - return l[i].Updated.UTC().After(l[j].Updated.UTC()) -} - -// Swap swaps the elements with indexes i and j. -func (l Certs) Swap(i, j int) { - tmp := l[i] - l[i] = l[j] - l[j] = tmp -} - -func main() { - data, err := ioutil.ReadAll(os.Stdin) - handleErr(err, "Error reading stdin: %v\n") - - var certs Certs - for len(data) > 0 { - var certPem *pem.Block - certPem, data = pem.Decode(data) - - var ok bool - var cert Cert - - cert.Url, ok = certPem.Headers["X-Crt-Sh-Url"] - handleBool(ok, "Did not get X-Crt-Sh-Url\n") - - str, ok := certPem.Headers["X-Crt-Sh-Updated"] - handleBool(ok, "Did not get X-Crt-Sh-Updated\n") - cert.Updated, err = time.Parse("2006-01-02T15:04:05Z", str) - handleErr(err, "Could not parse updated time") - - cert.X509, err = x509.ParseCertificate(certPem.Bytes) - handleErr(err, "Error parsing cert: %v\n") - - certs = append(certs, cert) - } - - sort.Sort(certs) - handleErr(tmpl.Execute(os.Stdout, map[string]interface{}{"certs":certs, "now": now}), "Could not execute template: %v\n") -} |