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certs.go
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certs.go
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package cmd
import (
"crypto/x509"
"encoding/pem"
"fmt"
"os"
"path/filepath"
"runtime"
"sort"
"strings"
"time"
"github.com/aserto-dev/topaz/pkg/cli/cc"
"github.com/aserto-dev/topaz/pkg/cli/certs"
)
type CertsCmd struct {
List ListCertsCmd `cmd:"" help:"list dev certs"`
Generate GenerateCertsCmd `cmd:"" help:"generate dev certs"`
Trust TrustCertsCmd `cmd:"" help:"trust/untrust dev certs"`
Remove RemoveCertFileCmd `cmd:"" help:"remove dev certs"`
}
const (
gatewayFileName = "gateway"
grpcFileName = "grpc"
certCommonName = "topaz"
)
type ListCertsCmd struct {
CertsDir string `flag:"" required:"false" default:"${topaz_certs_dir}" help:"path to dev certs folder" `
}
func (cmd *ListCertsCmd) Run(c *cc.CommonCtx) error {
certsDir := cmd.CertsDir
if fi, err := os.Stat(certsDir); os.IsNotExist(err) || !fi.IsDir() {
return fmt.Errorf("directory %s not found", certsDir)
}
c.UI.Normal().Msgf("certs directory: %s", certsDir)
certDetails := make(map[string]*x509.Certificate)
for _, fqn := range getFileList(certsDir, withCerts()) {
if fi, err := os.Stat(fqn); os.IsNotExist(err) || fi.IsDir() {
continue
}
content, err := os.ReadFile(fqn)
if err != nil {
return err
}
block, _ := pem.Decode(content)
cert, err := x509.ParseCertificate(block.Bytes)
if err != nil {
return err
}
_, fn := filepath.Split(fqn)
certDetails[fn] = cert
}
table := c.UI.Normal().WithTable("File", "Not Before", "Not After", "Valid", "CN", "DNS names")
fileNames := make([]string, 0, len(certDetails))
for k := range certDetails {
fileNames = append(fileNames, k)
}
sort.Strings(fileNames)
table.WithTableNoAutoWrapText()
for _, k := range fileNames {
isValid := true
if time.Until(certDetails[k].NotAfter) < 0 {
isValid = false
}
table.WithTableRow(k,
certDetails[k].NotBefore.Format(time.RFC3339),
certDetails[k].NotAfter.Format(time.RFC3339),
fmt.Sprintf("%t", isValid),
certDetails[k].Issuer.CommonName,
strings.Join(certDetails[k].DNSNames, ","),
)
}
table.Do()
return nil
}
type GenerateCertsCmd struct {
CertsDir string `flag:"" default:"${topaz_certs_dir}" help:"path to dev certs folder" `
Force bool `flag:"" default:"false" help:"force generation of dev certs, overwriting existing cert files"`
Trust bool `flag:"" default:"false" help:"add generated certs to trust store"`
DNSNames []string `flag:"" default:"localhost" help:"list of DNS names used to generate dev certs"`
}
// Generate a pair of gateway and grpc certificates.
func (cmd *GenerateCertsCmd) Run(c *cc.CommonCtx) error {
certsDir := cmd.CertsDir
if _, err := os.Stat(certsDir); os.IsNotExist(err) {
if err := os.MkdirAll(certsDir, 0755); err != nil {
return err
}
}
pathGateway := &certs.CertPaths{
Name: certCommonName + "-gateway",
Cert: filepath.Join(certsDir, fmt.Sprintf("%s.crt", gatewayFileName)),
CA: filepath.Join(certsDir, fmt.Sprintf("%s-ca.crt", gatewayFileName)),
Key: filepath.Join(certsDir, fmt.Sprintf("%s.key", gatewayFileName)),
Dir: certsDir,
}
pathGRPC := &certs.CertPaths{
Name: certCommonName + "-grpc",
Cert: filepath.Join(certsDir, fmt.Sprintf("%s.crt", grpcFileName)),
CA: filepath.Join(certsDir, fmt.Sprintf("%s-ca.crt", grpcFileName)),
Key: filepath.Join(certsDir, fmt.Sprintf("%s.key", grpcFileName)),
Dir: certsDir,
}
c.UI.Normal().Msgf("certs directory: %s", certsDir)
err := certs.GenerateCerts(c, cmd.Force, cmd.DNSNames, pathGateway, pathGRPC)
if err != nil {
return err
}
if cmd.Trust {
certTrust := &TrustCertsCmd{CertsDir: certsDir}
return certTrust.Run(c)
}
return nil
}
type TrustCertsCmd struct {
CertsDir string `flag:"" required:"false" default:"${topaz_certs_dir}" help:"path to dev certs folder" `
Remove bool `flag:"" default:"false" help:"remove dev cert from trust store"`
}
func (cmd *TrustCertsCmd) Run(c *cc.CommonCtx) error {
certsDir := cmd.CertsDir
if fi, err := os.Stat(certsDir); os.IsNotExist(err) || !fi.IsDir() {
return fmt.Errorf("directory %s not found", certsDir)
}
c.UI.Normal().Msgf("certs directory: %s", certsDir)
if runtime.GOOS == `linux` {
var err error
if cmd.Remove {
err = certs.RemoveTrustedCert("", "")
} else {
err = certs.AddTrustedCert("")
}
c.UI.Exclamation().Msg(err.Error())
return nil
}
table := c.UI.Normal().WithTable("File", "Action")
defer table.Do()
list := getFileList(certsDir, withCACerts())
if len(list) == 0 {
table.WithTableRow("no files found", "no actions performed")
return nil
}
for _, fqn := range list {
if fi, err := os.Stat(fqn); os.IsNotExist(err) || fi.IsDir() {
continue
}
if cmd.Remove {
fn := filepath.Base(fqn)
cn := fmt.Sprintf("%s-%s", certCommonName, strings.TrimSuffix(fn, filepath.Ext(fn)))
if err := certs.RemoveTrustedCert(fqn, cn); err != nil {
return err
}
table.WithTableRow(fn, "removed from trust store")
continue
}
if !cmd.Remove {
if err := certs.AddTrustedCert(fqn); err != nil {
return err
}
table.WithTableRow(filepath.Base(fqn), "added to trust store")
continue
}
}
return nil
}
type RemoveCertFileCmd struct {
CertsDir string `flag:"" required:"false" default:"${topaz_certs_dir}" help:"path to dev certs folder" `
}
func (cmd *RemoveCertFileCmd) Run(c *cc.CommonCtx) error {
certsDir := cmd.CertsDir
if fi, err := os.Stat(certsDir); os.IsNotExist(err) || !fi.IsDir() {
return fmt.Errorf("directory %s not found", certsDir)
}
c.UI.Normal().Msgf("certs directory: %s", certsDir)
table := c.UI.Normal().WithTable("File", "Action")
// remove cert from trust store, before delete cert file
for _, fqn := range getFileList(certsDir, withCACerts()) {
if fi, err := os.Stat(fqn); os.IsNotExist(err) || fi.IsDir() {
continue
}
fn := filepath.Base(fqn)
cn := fmt.Sprintf("%s-%s", certCommonName, strings.TrimSuffix(fn, filepath.Ext(fn)))
table.WithTableRow(fn, "removed from trust store")
if err := certs.RemoveTrustedCert(fqn, cn); err != nil {
return err
}
}
for _, fqn := range getFileList(certsDir, withAll()) {
if fi, err := os.Stat(fqn); os.IsNotExist(err) || fi.IsDir() {
continue
}
if err := os.Remove(fqn); err != nil {
return err
}
table.WithTableRow(filepath.Base(fqn), "deleted")
}
table.Do()
return nil
}
type fileListArgs struct {
inclCACerts bool
inclCerts bool
inclKeys bool
}
type fileListOption func(*fileListArgs)
func withAll() fileListOption {
return func(arg *fileListArgs) {
arg.inclCACerts = true
arg.inclCerts = true
arg.inclKeys = true
}
}
func withCerts() fileListOption {
return func(arg *fileListArgs) {
arg.inclCerts = true
arg.inclCACerts = true
}
}
func withCACerts() fileListOption {
return func(arg *fileListArgs) {
arg.inclCACerts = true
}
}
func getFileList(certsDir string, opts ...fileListOption) []string {
args := &fileListArgs{}
for _, opt := range opts {
opt(args)
}
filePaths := []string{}
if args.inclCACerts {
filePaths = append(filePaths,
filepath.Join(certsDir, fmt.Sprintf("%s-ca.crt", grpcFileName)),
filepath.Join(certsDir, fmt.Sprintf("%s-ca.crt", gatewayFileName)),
)
}
if args.inclCerts {
filePaths = append(filePaths,
filepath.Join(certsDir, fmt.Sprintf("%s.crt", grpcFileName)),
filepath.Join(certsDir, fmt.Sprintf("%s.crt", gatewayFileName)),
)
}
if args.inclKeys {
filePaths = append(filePaths,
filepath.Join(certsDir, fmt.Sprintf("%s.key", grpcFileName)),
filepath.Join(certsDir, fmt.Sprintf("%s.key", gatewayFileName)),
)
}
return filePaths
}