Refactor package errors + packages names :

- Refactor ErrorType, list errors managment, codeError
- Add interface Error with error interface implement
- Add type CodeError assign typiclly to const that represent code of error
- Add func to registry func to retrieve message from an uint16 codeError (typicaly a switch of each codeError const)
- Add default errorCode with default errorMessage if no one code or message is found
- Add modeError to manage how to manage compatibility between Error interface and error interface
- Add Error interface that allow parent link (parent as error or Error interface), code and trace management
- Add trace finder to allow find func/file/line caller when Error is call
- Add http 2 transport in httpcli
- Add http 2 transport in httpserver
- Add function to get client http with timeout management in httpcli
- Add function to get Error if occurs of http client in httpcli
- Add test for smtp package
- Chg return error by returning Error in all packages
- Chg package njs-archive by archive
- Chg package njs-certif by certificates
- Chg package njs-console by console
- Chg package njs-crypt by crypt
- Chg package njs-errors by errors
- Chg package njs-httpcli by httpcli
- Chg package njs-httpserver by httpserver
- Chg package njs-ioutils by ioutils
- Chg package njs-ldap by ldap
- Chg package njs-logger by logger
- Chg package njs-password by password
- Chg package njs-progress by progress
- Chg package njs-router by router
- Chg package njs-semaphore by semaphore
- Chg package njs-smtp by smtp
- Chg package njs-static by static
- Chg package njs-status by status
- Chg package njs-version by version
- Fix dependancies gopkg by github/go-ldap for go module compatibility
- Fix gin Abort call by gin Abort with Error in static package
- Fix issue #18 in status package : replace partner by component
- Fix go vet error
- Del deprecated function
- Del useless function & files
- Bump dependancies
- Apply CHG in README.md

crypt/crypt.go

@@ -0,0 +1,121 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2019 Nicolas JUHEL
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+package crypt
+
+import (
+	"io"
+
+	"crypto/aes"
+	"crypto/cipher"
+	"crypto/rand"
+	"encoding/hex"
+
+	. "github.com/nabbar/golib/errors"
+)
+
+var (
+	cryptKey   = make([]byte, 32)
+	cryptNonce = make([]byte, 12)
+)
+
+func SetKeyHex(key, nonce string) Error {
+	var err error
+	// Load your secret key from a safe place and reuse it across multiple
+	// Seal/Open calls. (Obviously don't use this example key for anything
+	// real.) If you want to convert a passphrase to a key, use a suitable
+	// package like bcrypt or scrypt.
+	cryptKey, err = hex.DecodeString(key)
+
+	if err != nil {
+		return HEXA_KEY.ErrorParent(err)
+	}
+
+	cryptNonce, err = hex.DecodeString(nonce)
+
+	if err != nil {
+		return HEXA_NONCE.ErrorParent(err)
+	}
+
+	return nil
+}
+
+func SetKeyByte(key [32]byte, nonce [12]byte) {
+	cryptKey = key[:]
+	cryptNonce = nonce[:]
+}
+
+func GenKeyByte() ([]byte, []byte, Error) {
+	// Never use more than 2^32 random key with a given key because of the risk of a repeat.
+	if _, err := io.ReadFull(rand.Reader, cryptKey); err != nil {
+		return make([]byte, 32), make([]byte, 12), BYTE_KEYGEN.ErrorParent(err)
+	}
+
+	// Never use more than 2^32 random nonces with a given key because of the risk of a repeat.
+	if _, err := io.ReadFull(rand.Reader, cryptNonce); err != nil {
+		return make([]byte, 32), make([]byte, 12), BYTE_NONCEGEN.ErrorParent(err)
+	}
+
+	return cryptKey, cryptNonce, nil
+}
+
+func Encrypt(clearValue []byte) (string, Error) {
+	// When decoded the key should be 16 bytes (AES-128) or 32 (AES-256).
+	block, err := aes.NewCipher(cryptKey)
+	if err != nil {
+		return "", AES_BLOCK.ErrorParent(err)
+	}
+
+	aesgcm, err := cipher.NewGCM(block)
+	if err != nil {
+		return "", AES_GCM.ErrorParent(err)
+	}
+
+	return hex.EncodeToString(aesgcm.Seal(nil, cryptNonce, clearValue, nil)), nil
+}
+
+func Decrypt(hexaVal string) ([]byte, Error) {
+	// When decoded the key should be 16 bytes (AES-128) or 32 (AES-256).
+	ciphertext, err := hex.DecodeString(hexaVal)
+	if err != nil {
+		return nil, HEXA_DECODE.ErrorParent(err)
+	}
+
+	block, err := aes.NewCipher(cryptKey)
+	if err != nil {
+		return nil, AES_BLOCK.ErrorParent(err)
+	}
+
+	aesgcm, err := cipher.NewGCM(block)
+	if err != nil {
+		return nil, AES_GCM.ErrorParent(err)
+	}
+
+	if res, err := aesgcm.Open(nil, cryptNonce, ciphertext, nil); err != nil {
+		return res, AES_DECRYPT.ErrorParent(err)
+	} else {
+		return res, nil
+	}
+}