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vaultEncrypt.go
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/
vaultEncrypt.go
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//must be main package
package main
/*
#include "postgres.h"
#cgo LDFLAGS: -Wl,--unresolved-symbols=ignore-all
static void ereport_debug(char *s)
{
ereport(DEBUG1,
(errmsg("%s", s)));
}
static void ereport_info(char *s)
{
ereport(INFO,
(errmsg("%s", s)));
}
static void ereport_error(char *s)
{
ereport(ERROR,
(errmsg("%s", s)));
}
*/
import "C"
import (
"crypto/tls"
"encoding/base64"
"fmt"
"github.com/hashicorp/vault/api"
"net/http"
"unsafe"
)
var httpClient = &http.Client{Transport: &http.Transport{TLSClientConfig: &tls.Config{}}}
func NewVaultClient(vaultAddr string, vaultToken string, inSecure bool) *api.Client {
config := &api.Config{Address: vaultAddr, HttpClient: httpClient}
tlsConfig := &api.TLSConfig{Insecure: inSecure}
err := config.ConfigureTLS(tlsConfig)
if err != nil {
message := C.CString(fmt.Sprintf("Failed Vault ConfigureTLS %s", err))
defer C.free(unsafe.Pointer(message))
C.ereport_error(message)
}
client, err := api.NewClient(config)
//C.ereport_debug(C.CString(fmt.Sprintf("vaultAddr : %s", vaultAddr)))
if err != nil {
message := C.CString(fmt.Sprintf("Cannot Create NewClient (%v): %s", vaultAddr, err))
defer C.free(unsafe.Pointer(message))
C.ereport_error(message)
}
client.SetToken(vaultToken)
return client
}
//export VaultEncrypt
func VaultEncrypt(text *C.char, vaultAddr *C.char, vaultToken *C.char, enginePath *C.char, keyName *C.char, tlsSkipVerify C.int, encryptResult **C.char) {
plainText := C.GoString(text)
addr := C.GoString(vaultAddr)
token := C.GoString(vaultToken)
skipVerify := tlsSkipVerify != 0
encryptPath := fmt.Sprintf("%v%s%v", C.GoString(enginePath), "/encrypt/", C.GoString(keyName))
//C.ereport_debug(C.CString(fmt.Sprintf("Vault encryptPath : %s", encryptPath)))
client := NewVaultClient(addr, token, skipVerify)
//C.ereport_debug(C.CString(fmt.Sprintf("Create new vault client.")))
base64Target := base64.StdEncoding.EncodeToString([]byte(plainText))
targetData := map[string]interface{}{
"plaintext": base64Target,
}
//C.ereport_debug(C.CString(fmt.Sprintf("Request encryption to vault.")))
CipherData, err := client.Logical().Write(encryptPath, targetData)
if err != nil {
message := C.CString(fmt.Sprintf("Cannot encrypt data : %s", err))
defer C.free(unsafe.Pointer(message))
C.ereport_error(message)
}
base64Cipher, ok := CipherData.Data["ciphertext"]
if !ok {
message := C.CString(fmt.Sprintf("key ciphertext not found"))
defer C.free(unsafe.Pointer(message))
C.ereport_error(message)
}
//C.ereport_debug(C.CString(fmt.Sprintf("VaultEncrypt:cipher text: %s", base64Cipher.(string))))
*encryptResult = C.CString(base64Cipher.(string))
//C.ereport_debug(C.CString(fmt.Sprintf("======================================'%s'\n", *encryptResult)))
//C.ereport_debug(C.CString(fmt.Sprintf("cipher text(enc_result): %s", C.GoString(*encryptResult))))
return
}
//export VaultDecrypt
func VaultDecrypt(cipher *C.char, vaultAddr *C.char, vaultToken *C.char, enginePath *C.char, keyName *C.char, tlsSkipVerify C.int, decryptResult **C.char) {
base64Cipher := C.GoString(cipher)
addr := C.GoString(vaultAddr)
token := C.GoString(vaultToken)
skipVerify := tlsSkipVerify != 0
decryptPath := fmt.Sprintf("%v%s%v", C.GoString(enginePath), "/decrypt/", C.GoString(keyName))
//C.ereport_debug(C.CString(fmt.Sprintf("Vault decryptPath : %s", decryptPath)))
client := NewVaultClient(addr, token, skipVerify)
//C.ereport_debug(C.CString(fmt.Sprintf("Create new vault client.")))
targetData := map[string]interface{}{
"ciphertext": base64Cipher,
}
//C.ereport_debug(C.CString(fmt.Sprintf("Request decryption to vault.")))
plainData, err := client.Logical().Write(decryptPath, targetData)
if err != nil {
message := C.CString(fmt.Sprintf("Cannot decrypt data : %s", err))
defer C.free(unsafe.Pointer(message))
C.ereport_error(message)
}
base64Text, ok := plainData.Data["plaintext"].(string)
if !ok {
message := C.CString(fmt.Sprintf("key plaintext not found "))
defer C.free(unsafe.Pointer(message))
C.ereport_error(message)
}
decryptText, err := base64.StdEncoding.DecodeString(base64Text)
if err != nil {
message := C.CString(fmt.Sprintf("Cannot decode data : %s", err))
defer C.free(unsafe.Pointer(message))
C.ereport_error(message)
}
//C.ereport_debug(C.CString(fmt.Sprintf("decrypt text: %s", decryptText))
*decryptResult = C.CString(fmt.Sprintf("%s", decryptText))
//C.ereport_debug(C.CString(fmt.Sprintf("decrypt text(dec_result): %s", C.GoString(*decryptResult))))
return
}
func main() {
}