mirror of
https://github.com/square/certigo.git
synced 2024-04-21 12:32:40 +00:00
Christopher Denny
d86830f197
-If a field in a cert is blank, prints N/A -Large arrays are now newline separated in the output, instead of all on one line -Displays cert alternate ip addresses and email addresses as well
105 lines
2.9 KiB
Go
105 lines
2.9 KiB
Go
/*-
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* Copyright 2016 Square Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package main
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import (
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"bufio"
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"crypto/x509"
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"encoding/pem"
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"fmt"
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"io/ioutil"
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"os"
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"strings"
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"golang.org/x/crypto/pkcs12"
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"gopkg.in/alecthomas/kingpin.v2"
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)
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var (
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app = kingpin.New("certigo", "A command line certificate examination utility.")
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dump = app.Command("dump", "Display information about a certificate.")
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dumpFile = dump.Arg("file", "Certificate file to dump.").Required().String()
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dumpType = dump.Flag("format", "Format of given input. If unspecified, certigo guesses based on file extension").Default("guess").Short('f').String()
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)
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func main() {
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switch kingpin.MustParse(app.Parse(os.Args[1:])) {
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case dump.FullCommand(): //Dump certificate
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certs, err := getCerts(*dumpFile, *dumpType)
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if err != nil {
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fmt.Fprintf(os.Stderr, "%s\n", err)
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os.Exit(1)
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}
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for i, cert := range certs {
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fmt.Println("CERTIFICATE", i+1)
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displayCert(cert)
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fmt.Println("\n")
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}
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}
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}
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// getCerts takes in a filename and format type and returns an
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// array of all the certificates found in that file. If no format
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// is specified for the file, getCerts guesses what format was used
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// based on the file extension used in the file name. If it can't
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// guess based on this it returns and error.
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func getCerts(file, format string) ([]*x509.Certificate, error) {
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var certs []*x509.Certificate
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data, _ := ioutil.ReadFile(file)
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switch format {
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case "PEM":
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block, data := pem.Decode(data)
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for block != nil {
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cert, err := x509.ParseCertificate(block.Bytes)
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if err != nil {
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return nil, err
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}
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certs = append(certs, cert)
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block, data = pem.Decode(data)
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}
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case "PKCS12":
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scanner := bufio.NewReader(os.Stdin)
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fmt.Print("Enter password: ")
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password, _ := scanner.ReadString('\n')
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blocks, err := pkcs12.ToPEM(data, strings.TrimSuffix(password, "\n"))
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if err != nil {
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return nil, err
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}
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for _, block := range blocks {
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if block.Type == "CERTIFICATE" {
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cert, err := x509.ParseCertificate(block.Bytes)
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if err != nil {
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return nil, err
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}
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certs = append(certs, cert)
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}
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}
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case "guess":
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if strings.HasSuffix(file, "pem") {
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return getCerts(file, "PEM")
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} else if strings.HasSuffix(file, "p12") || strings.HasSuffix(file, "pks") {
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return getCerts(file, "PKCS12")
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} else {
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return getCerts(file, ", couldn't guess format")
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}
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default:
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return nil, fmt.Errorf("unknown type %s", format)
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}
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return certs, nil
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}
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