mirror of
https://github.com/ribbybibby/ssl_exporter.git
synced 2024-11-27 08:31:02 +02:00
106 lines
3.5 KiB
Go
106 lines
3.5 KiB
Go
package test
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import (
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"crypto/rand"
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"crypto/rsa"
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"crypto/x509"
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"crypto/x509/pkix"
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"encoding/pem"
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"fmt"
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"io/ioutil"
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"math/big"
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"net"
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"time"
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)
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// GenerateTestCertificate generates a test certificate with the given expiry date
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func GenerateTestCertificate(expiry time.Time) ([]byte, []byte) {
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privateKey, err := rsa.GenerateKey(rand.Reader, 2048)
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if err != nil {
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panic(fmt.Sprintf("Error creating rsa key: %s", err))
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}
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pemKey := pem.EncodeToMemory(&pem.Block{Type: "RSA PRIVATE KEY", Bytes: x509.MarshalPKCS1PrivateKey(privateKey)})
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cert := GenerateCertificateTemplate(expiry)
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cert.IsCA = true
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_, pemCert := GenerateSelfSignedCertificateWithPrivateKey(cert, privateKey)
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return pemCert, pemKey
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}
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// GenerateSignedCertificate generates a certificate that is signed
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func GenerateSignedCertificate(cert, parentCert *x509.Certificate, parentKey *rsa.PrivateKey) (*x509.Certificate, []byte, []byte) {
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privateKey, err := rsa.GenerateKey(rand.Reader, 2048)
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if err != nil {
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panic(fmt.Sprintf("Error creating rsa key: %s", err))
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}
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derCert, err := x509.CreateCertificate(rand.Reader, cert, parentCert, &privateKey.PublicKey, parentKey)
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if err != nil {
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panic(fmt.Sprintf("Error signing test-certificate: %s", err))
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}
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genCert, err := x509.ParseCertificate(derCert)
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if err != nil {
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panic(fmt.Sprintf("Error parsing test-certificate: %s", err))
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}
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return genCert,
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pem.EncodeToMemory(&pem.Block{Type: "CERTIFICATE", Bytes: derCert}),
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pem.EncodeToMemory(&pem.Block{Type: "RSA PRIVATE KEY", Bytes: x509.MarshalPKCS1PrivateKey(privateKey)})
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}
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// GenerateSelfSignedCertificateWithPrivateKey generates a self signed
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// certificate with the given private key
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func GenerateSelfSignedCertificateWithPrivateKey(cert *x509.Certificate, privateKey *rsa.PrivateKey) (*x509.Certificate, []byte) {
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derCert, err := x509.CreateCertificate(rand.Reader, cert, cert, &privateKey.PublicKey, privateKey)
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if err != nil {
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panic(fmt.Sprintf("Error signing test-certificate: %s", err))
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}
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genCert, err := x509.ParseCertificate(derCert)
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if err != nil {
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panic(fmt.Sprintf("Error parsing test-certificate: %s", err))
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}
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return genCert, pem.EncodeToMemory(&pem.Block{Type: "CERTIFICATE", Bytes: derCert})
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}
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// GenerateCertificateTemplate generates the template used to issue test certificates
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func GenerateCertificateTemplate(expiry time.Time) *x509.Certificate {
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return &x509.Certificate{
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BasicConstraintsValid: true,
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SubjectKeyId: []byte{1},
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SerialNumber: big.NewInt(100),
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NotBefore: time.Now(),
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NotAfter: expiry,
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ExtKeyUsage: []x509.ExtKeyUsage{x509.ExtKeyUsageClientAuth, x509.ExtKeyUsageServerAuth},
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KeyUsage: x509.KeyUsageDigitalSignature | x509.KeyUsageCertSign,
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IPAddresses: []net.IP{net.ParseIP("127.0.0.1"), net.ParseIP("::1")},
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Subject: pkix.Name{
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CommonName: "example.ribbybibby.me",
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Organization: []string{"ribbybibby"},
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OrganizationalUnit: []string{"ribbybibbys org"},
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},
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EmailAddresses: []string{"me@ribbybibby.me", "example@ribbybibby.me"},
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DNSNames: []string{"example.ribbybibby.me", "example-2.ribbybibby.me", "example-3.ribbybibby.me"},
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}
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}
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// WriteFile writes some content to a temporary file
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func WriteFile(filename string, contents []byte) (string, error) {
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tmpFile, err := ioutil.TempFile("", filename)
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if err != nil {
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return tmpFile.Name(), err
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}
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if _, err := tmpFile.Write(contents); err != nil {
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return tmpFile.Name(), err
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}
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if err := tmpFile.Close(); err != nil {
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return tmpFile.Name(), err
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}
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return tmpFile.Name(), nil
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}
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