handle parsing multiple certificates in a pem file

This commit is contained in:
Chelsea Holland Komlo 2018-05-29 18:25:43 -04:00
parent 9156556555
commit 1dc14d8e0d
2 changed files with 109 additions and 1 deletions

View File

@ -147,7 +147,7 @@ func (c *Config) AppendCA(pool *x509.CertPool) error {
return fmt.Errorf("Failed to read CA file: %v", err)
}
block, _ := pem.Decode(data)
block, rest := pem.Decode(data)
if block == nil {
return fmt.Errorf("Failed to decode CA file from pem format")
}
@ -161,6 +161,27 @@ func (c *Config) AppendCA(pool *x509.CertPool) error {
return fmt.Errorf("Failed to add any CA certificates")
}
for len(rest) > 0 {
block, rest = pem.Decode(rest)
if block == nil {
return fmt.Errorf("Failed to decode CA file from pem format")
}
// Parse the certificate to ensure that it is properly formatted
if _, err := x509.ParseCertificates(block.Bytes); err != nil {
return fmt.Errorf("Failed to parse CA file: %v", err)
}
if !pool.AppendCertsFromPEM(data) {
return fmt.Errorf("Failed to add any CA certificates")
}
if len(rest) == 0 {
break
}
}
return nil
}

View File

@ -48,6 +48,93 @@ func TestConfig_AppendCA_Valid(t *testing.T) {
require.Nil(err)
}
func TestConfig_AppendCA_Valid_MultipleCerts(t *testing.T) {
require := require.New(t)
tmpCAFile, err := ioutil.TempFile("/tmp", "test_ca_file")
require.Nil(err)
defer os.Remove(tmpCAFile.Name())
certs := `
-----BEGIN CERTIFICATE-----
MIICMzCCAdqgAwIBAgIUNZ9L86Xp9EuDH0/qyAesh599LXQwCgYIKoZIzj0EAwIw
eDELMAkGA1UEBhMCVVMxEzARBgNVBAgTCkNhbGlmb3JuaWExFjAUBgNVBAcTDVNh
biBGcmFuY2lzY28xEjAQBgNVBAoTCUhhc2hpQ29ycDEOMAwGA1UECxMFTm9tYWQx
GDAWBgNVBAMTD25vbWFkLmhhc2hpY29ycDAeFw0xNjExMTAxOTQ4MDBaFw0yMTEx
MDkxOTQ4MDBaMHgxCzAJBgNVBAYTAlVTMRMwEQYDVQQIEwpDYWxpZm9ybmlhMRYw
FAYDVQQHEw1TYW4gRnJhbmNpc2NvMRIwEAYDVQQKEwlIYXNoaUNvcnAxDjAMBgNV
BAsTBU5vbWFkMRgwFgYDVQQDEw9ub21hZC5oYXNoaWNvcnAwWTATBgcqhkjOPQIB
BggqhkjOPQMBBwNCAARfJmTdHzYIMPD8SK+kj5Gc79fmpOcg6wnb4JNVwCqWw9O+
uNdZJZWSi4Q/4HojM5FTSBqYxNgSrmY/o3oQrCPlo0IwQDAOBgNVHQ8BAf8EBAMC
AQYwDwYDVR0TAQH/BAUwAwEB/zAdBgNVHQ4EFgQUOjVq/BectnhcKn6EHUD4NJFm
/UAwCgYIKoZIzj0EAwIDRwAwRAIgTemDJGSGtcQPXLWKiQNw4SKO9wAPhn/WoKW4
Ln2ZUe8CIDsQswBQS7URbqnKYDye2Y4befJkr4fmhhmMQb2ex9A4
-----END CERTIFICATE-----
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----`
_, err = tmpCAFile.Write([]byte(certs))
require.Nil(err)
conf := &Config{
CAFile: tmpCAFile.Name(),
}
pool := x509.NewCertPool()
err = conf.AppendCA(pool)
require.Nil(err)
}
func TestConfig_AppendCA_InValid_MultipleCerts(t *testing.T) {
require := require.New(t)
tmpCAFile, err := ioutil.TempFile("/tmp", "test_ca_file")
require.Nil(err)
defer os.Remove(tmpCAFile.Name())
certs := `
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
-----BEGIN CERTIFICATE-----
Invalid
-----END CERTIFICATE-----`
_, err = tmpCAFile.Write([]byte(certs))
require.Nil(err)
conf := &Config{
CAFile: tmpCAFile.Name(),
}
pool := x509.NewCertPool()
err = conf.AppendCA(pool)
require.NotNil(err)
}
func TestConfig_AppendCA_Invalid(t *testing.T) {
require := require.New(t)
{