Geofiles: Revert related changes for now, waiting for better changes (#5557)

Reverts 5d94a62a83 c715154309 961c352127 36425d2a6e

Fixes https://github.com/XTLS/Xray-core/issues/5538 https://github.com/XTLS/Xray-core/issues/5536

common/platform/filesystem/asset_tools.go

@@ -1,52 +0,0 @@
-package filesystem
-
-func DecodeVarint(buf []byte) (x uint64, n int) {
-	for shift := uint(0); shift < 64; shift += 7 {
-		if n >= len(buf) {
-			return 0, 0
-		}
-		b := uint64(buf[n])
-		n++
-		x |= (b & 0x7F) << shift
-		if (b & 0x80) == 0 {
-			return x, n
-		}
-	}
-
-	// The number is too large to represent in a 64-bit value.
-	return 0, 0
-}
-
-func Find(data, code []byte) []byte {
-	codeL := len(code)
-	if codeL == 0 {
-		return nil
-	}
-	for {
-		dataL := len(data)
-		if dataL < 2 {
-			return nil
-		}
-		x, y := DecodeVarint(data[1:])
-		if x == 0 && y == 0 {
-			return nil
-		}
-		headL, bodyL := 1+y, int(x)
-		dataL -= headL
-		if dataL < bodyL {
-			return nil
-		}
-		data = data[headL:]
-		if int(data[1]) == codeL {
-			for i := 0; i < codeL && data[2+i] == code[i]; i++ {
-				if i+1 == codeL {
-					return data[:bodyL]
-				}
-			}
-		}
-		if dataL == bodyL {
-			return nil
-		}
-		data = data[bodyL:]
-	}
-}

common/platform/filesystem/file.go

@@ -1,12 +1,9 @@
-//go:build !windows && !wasm
-
 package filesystem
 
 import (
 	"io"
 	"os"
 	"path/filepath"
-	"syscall"
 
 	"github.com/xtls/xray-core/common/buf"
 	"github.com/xtls/xray-core/common/platform"
@@ -19,29 +16,6 @@ var NewFileReader FileReaderFunc = func(path string) (io.ReadCloser, error) {
 }
 
 func ReadFile(path string) ([]byte, error) {
-	file, err := os.Open(path)
-	if err != nil {
-		return nil, err
-	}
-	defer file.Close()
-
-	stat, err := file.Stat()
-	if err != nil {
-		return nil, err
-	}
-
-	size := stat.Size()
-	if size == 0 {
-		return []byte{}, nil
-	}
-
-	// use mmap to save RAM
-	bs, err := syscall.Mmap(int(file.Fd()), 0, int(size), syscall.PROT_READ, syscall.MAP_SHARED)
-	if err == nil {
-		return bs, nil
-	}
-
-	// fallback
 	reader, err := NewFileReader(path)
 	if err != nil {
 		return nil, err

common/platform/filesystem/file_other.go

@@ -1,54 +0,0 @@
-//go:build windows || wasm
-
-package filesystem
-
-import (
-	"io"
-	"os"
-	"path/filepath"
-
-	"github.com/xtls/xray-core/common/buf"
-	"github.com/xtls/xray-core/common/platform"
-)
-
-type FileReaderFunc func(path string) (io.ReadCloser, error)
-
-var NewFileReader FileReaderFunc = func(path string) (io.ReadCloser, error) {
-	return os.Open(path)
-}
-
-func ReadFile(path string) ([]byte, error) {
-	reader, err := NewFileReader(path)
-	if err != nil {
-		return nil, err
-	}
-	defer reader.Close()
-
-	return buf.ReadAllToBytes(reader)
-}
-
-func ReadAsset(file string) ([]byte, error) {
-	return ReadFile(platform.GetAssetLocation(file))
-}
-
-func ReadCert(file string) ([]byte, error) {
-	if filepath.IsAbs(file) {
-		return ReadFile(file)
-	}
-	return ReadFile(platform.GetCertLocation(file))
-}
-
-func CopyFile(dst string, src string) error {
-	bytes, err := ReadFile(src)
-	if err != nil {
-		return err
-	}
-	f, err := os.OpenFile(dst, os.O_CREATE|os.O_WRONLY, 0o644)
-	if err != nil {
-		return err
-	}
-	defer f.Close()
-
-	_, err = f.Write(bytes)
-	return err
-}

common/platform/windows.go

@@ -3,9 +3,7 @@
 
 package platform
 
-import (
-	"path/filepath"
-)
+import "path/filepath"
 
 func LineSeparator() string {
 	return "\r\n"
@@ -14,7 +12,6 @@ func LineSeparator() string {
 // GetAssetLocation searches for `file` in the env dir and the executable dir
 func GetAssetLocation(file string) string {
 	assetPath := NewEnvFlag(AssetLocation).GetValue(getExecutableDir)
-
 	return filepath.Join(assetPath, file)
 }