Fix: Authorization return failure if date is out of range

server/go/Makefile

@@ -0,0 +1,95 @@
+# Makefile for SimpleRemoter Go Server
+# Compatible with GnuWin32 make on Windows cmd
+
+# Binary name
+BINARY_NAME=server
+
+# Build directory
+BUILD_DIR=build
+
+# Main package path
+MAIN_PACKAGE=./cmd
+
+# Go build flags (strip debug info for smaller binary)
+LDFLAGS=-ldflags "-s -w"
+
+# Windows commands
+MKDIR=if not exist $(BUILD_DIR) mkdir $(BUILD_DIR)
+RMDIR=if exist $(BUILD_DIR) rmdir /s /q $(BUILD_DIR)
+
+.PHONY: all clean windows linux build help windows-386 linux-arm64 all-platforms test fmt deps
+
+# Default target
+all: clean windows linux
+
+# Build for current platform
+build:
+	@echo Building for current platform...
+	@$(MKDIR)
+	go build $(LDFLAGS) -o $(BUILD_DIR)\$(BINARY_NAME).exe $(MAIN_PACKAGE)
+	@echo Done
+
+# Build for Windows (amd64)
+windows:
+	@echo Building for Windows amd64...
+	@$(MKDIR)
+	set GOOS=windows&& set GOARCH=amd64&& go build $(LDFLAGS) -o $(BUILD_DIR)\$(BINARY_NAME)_windows_amd64.exe $(MAIN_PACKAGE)
+	@echo Done: $(BUILD_DIR)\$(BINARY_NAME)_windows_amd64.exe
+
+# Build for Windows (386)
+windows-386:
+	@echo Building for Windows 386...
+	@$(MKDIR)
+	set GOOS=windows&& set GOARCH=386&& go build $(LDFLAGS) -o $(BUILD_DIR)\$(BINARY_NAME)_windows_386.exe $(MAIN_PACKAGE)
+	@echo Done: $(BUILD_DIR)\$(BINARY_NAME)_windows_386.exe
+
+# Build for Linux (amd64)
+linux:
+	@echo Building for Linux amd64...
+	@$(MKDIR)
+	set GOOS=linux&& set GOARCH=amd64&& go build $(LDFLAGS) -o $(BUILD_DIR)\$(BINARY_NAME)_linux_amd64 $(MAIN_PACKAGE)
+	@echo Done: $(BUILD_DIR)\$(BINARY_NAME)_linux_amd64
+
+# Build for Linux (arm64)
+linux-arm64:
+	@echo Building for Linux arm64...
+	@$(MKDIR)
+	set GOOS=linux&& set GOARCH=arm64&& go build $(LDFLAGS) -o $(BUILD_DIR)\$(BINARY_NAME)_linux_arm64 $(MAIN_PACKAGE)
+	@echo Done: $(BUILD_DIR)\$(BINARY_NAME)_linux_arm64
+
+# Build all platforms
+all-platforms: windows windows-386 linux linux-arm64
+
+# Clean build artifacts
+clean:
+	@echo Cleaning...
+	@$(RMDIR)
+	@echo Done
+
+# Run tests
+test:
+	go test -v ./...
+
+# Format code
+fmt:
+	go fmt ./...
+
+# Download dependencies
+deps:
+	go mod download
+	go mod tidy
+
+# Show help
+help:
+	@echo Available targets:
+	@echo   all           - Build for Windows and Linux amd64
+	@echo   build         - Build for current platform
+	@echo   windows       - Build for Windows amd64
+	@echo   windows-386   - Build for Windows 386
+	@echo   linux         - Build for Linux amd64
+	@echo   linux-arm64   - Build for Linux arm64
+	@echo   all-platforms - Build for all platforms
+	@echo   clean         - Clean build directory
+	@echo   test          - Run tests
+	@echo   fmt           - Format code
+	@echo   deps          - Download dependencies

server/go/auth/auth.go

@@ -8,6 +8,7 @@ import (
 	"encoding/hex"
 	"os"
 	"strings"
+	"time"
 
 	"golang.org/x/text/encoding/simplifiedchinese"
 	"golang.org/x/text/transform"
@@ -124,6 +125,12 @@ func (a *Authenticator) Authenticate(data []byte) *AuthResult {
 	if superPass != "" && hmacSig != 0 {
 		verified := VerifyMessage(superPass, []byte(passcode), hmacSig)
 		if verified {
+			// HMAC verified, now check date range
+			// passcode format: YYYYMMDD-YYYYMMDD-xxx (first two parts are start and end dates)
+			if !isWithinDateRange(parts[0], parts[1]) {
+				result.Message = "授权已过期或尚未生效"
+				return result
+			}
 			result.Valid = true
 			result.Message = "此程序已获授权，请遵守授权协议，感谢合作"
 		}
@@ -136,6 +143,28 @@ func (a *Authenticator) Authenticate(data []byte) *AuthResult {
 	return result
 }
 
+// isWithinDateRange checks if current date is within the specified date range
+// startDate and endDate are in YYYYMMDD format (e.g., "20251231")
+func isWithinDateRange(startDate, endDate string) bool {
+	const dateFormat = "20060102" // Go reference time format for YYYYMMDD
+
+	start, err := time.Parse(dateFormat, startDate)
+	if err != nil {
+		return false
+	}
+
+	end, err := time.Parse(dateFormat, endDate)
+	if err != nil {
+		return false
+	}
+
+	// Set end date to end of day (23:59:59)
+	end = end.Add(24*time.Hour - time.Second)
+
+	now := time.Now()
+	return !now.Before(start) && !now.After(end)
+}
+
 // utf8ToGBK converts UTF-8 string to GBK encoded bytes
 func utf8ToGBK(s string) []byte {
 	reader := transform.NewReader(bytes.NewReader([]byte(s)), simplifiedchinese.GBK.NewEncoder())
@@ -299,7 +328,11 @@ func (a *Authenticator) AuthenticateHeartbeat(data []byte) *HeartbeatAuthResult
 	if superPass != "" {
 		verified := VerifyMessage(superPass, []byte(passcode), pwdHmac)
 		if verified {
-			result.Authorized = true
+			// HMAC verified, now check date range
+			// passcode format: YYYYMMDD-YYYYMMDD-xxx (first two parts are start and end dates)
+			if isWithinDateRange(parts[0], parts[1]) {
+				result.Authorized = true
+			}
 		}
 	}