Initial commit

app/utils/env.go

@@ -0,0 +1,13 @@
+package utils
+
+import (
+	"os"
+)
+
+func GetEnv(key, defaultValue string) string {
+	value := os.Getenv(key)
+	if value == "" {
+		return defaultValue
+	}
+	return value
+}

app/utils/error/http.go

@@ -0,0 +1,14 @@
+package error
+
+type HTTPError struct {
+	Code    int    `json:"code"`
+	Message string `json:"message"`
+}
+
+func (e *HTTPError) Error() string {
+	return e.Message
+}
+
+func (e *HTTPError) StatusCode() int {
+	return e.Code
+}

app/utils/hash.go

@@ -0,0 +1,81 @@
+package utils
+
+import (
+	"crypto/rand"
+	"crypto/subtle"
+	"encoding/base64"
+	"fmt"
+	"strings"
+
+	"golang.org/x/crypto/argon2"
+)
+
+const (
+	argon2Time    = 3
+	argon2Memory  = 64 * 1024
+	argon2Threads = 4
+	argon2KeyLen  = 32
+	saltLength    = 16
+)
+
+func Hash(password string) (string, error) {
+	salt := make([]byte, saltLength)
+	if _, err := rand.Read(salt); err != nil {
+		return "", err
+	}
+
+	hash := argon2.IDKey([]byte(password), salt, argon2Time, argon2Memory, argon2Threads, argon2KeyLen)
+
+	b64Salt := base64.RawStdEncoding.EncodeToString(salt)
+	b64Hash := base64.RawStdEncoding.EncodeToString(hash)
+
+	encodedHash := fmt.Sprintf("$argon2id$v=%d$m=%d,t=%d,p=%d$%s$%s",
+		argon2.Version, argon2Memory, argon2Time, argon2Threads, b64Salt, b64Hash)
+
+	return encodedHash, nil
+}
+
+func Verify(password, encodedHash string) (bool, error) {
+	parts := strings.Split(encodedHash, "$")
+	if len(parts) != 6 {
+		return false, fmt.Errorf("invalid hash format")
+	}
+
+	if parts[1] != "argon2id" {
+		return false, fmt.Errorf("unsupported hash algorithm")
+	}
+
+	var version int
+	_, err := fmt.Sscanf(parts[2], "v=%d", &version)
+	if err != nil {
+		return false, err
+	}
+	if version != argon2.Version {
+		return false, fmt.Errorf("incompatible version")
+	}
+
+	var memory, time uint32
+	var threads uint8
+	_, err = fmt.Sscanf(parts[3], "m=%d,t=%d,p=%d", &memory, &time, &threads)
+	if err != nil {
+		return false, err
+	}
+
+	salt, err := base64.RawStdEncoding.DecodeString(parts[4])
+	if err != nil {
+		return false, err
+	}
+
+	hash, err := base64.RawStdEncoding.DecodeString(parts[5])
+	if err != nil {
+		return false, err
+	}
+
+	otherHash := argon2.IDKey([]byte(password), salt, time, memory, threads, uint32(len(hash)))
+
+	if subtle.ConstantTimeCompare(hash, otherHash) == 1 {
+		return true, nil
+	}
+
+	return false, nil
+}

app/utils/res/http.go

@@ -0,0 +1,19 @@
+package res
+
+type HTTPResponse struct {
+	Code          int         `json:"code"`
+	Body          interface{} `json:"body"`
+	ODataContext  string      `json:"@odata.context"`
+	ODataCount    int         `json:"@odata.count"`
+	ODataNextLink string      `json:"@odata.nextLink"`
+}
+
+func (res *HTTPResponse) JSON() map[string]interface{} {
+	return map[string]interface{}{
+		"code":            res.Code,
+		"body":            res.Body,
+		"@odata.context":  res.ODataContext,
+		"@odata.count":    res.ODataCount,
+		"@odata.nextLink": res.ODataNextLink,
+	}
+}