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cloudreve/pkg/filesystem/validator.go

82 lines
1.8 KiB

package filesystem
import (
"context"
"github.com/HFO4/cloudreve/pkg/util"
"path/filepath"
"strings"
)
/* ==========
验证器
==========
*/
// 文件/路径名保留字符
var reservedCharacter = []string{"\\", "?", "*", "<", "\"", ":", ">", "/", "|"}
// ValidateLegalName 验证文件名/文件夹名是否合法
func (fs *FileSystem) ValidateLegalName(ctx context.Context, name string) bool {
// 是否包含保留字符
for _, value := range reservedCharacter {
if strings.Contains(name, value) {
return false
}
}
// 是否超出长度限制
if len(name) >= 256 {
return false
}
// 是否为空限制
if len(name) == 0 {
return false
}
// 结尾不能是空格
if strings.HasSuffix(name, " ") {
return false
}
return true
}
// ValidateFileSize 验证上传的文件大小是否超出限制
func (fs *FileSystem) ValidateFileSize(ctx context.Context, size uint64) bool {
if fs.User.Policy.MaxSize == 0 {
return true
}
return size <= fs.User.Policy.MaxSize
}
// ValidateCapacity 验证并扣除用户容量
func (fs *FileSystem) ValidateCapacity(ctx context.Context, size uint64) bool {
return fs.User.IncreaseStorage(size)
}
// ValidateExtension 验证文件扩展名
func (fs *FileSystem) ValidateExtension(ctx context.Context, fileName string) bool {
// 不需要验证
if len(fs.User.Policy.OptionsSerialized.FileType) == 0 {
return true
}
return IsInExtensionList(fs.User.Policy.OptionsSerialized.FileType, fileName)
}
// IsInExtensionList 返回文件的扩展名是否在给定的列表范围内
func IsInExtensionList(extList []string, fileName string) bool {
ext := strings.ToLower(filepath.Ext(fileName))
// 无扩展名时
if len(ext) == 0 {
return false
}
if util.ContainsString(extList, ext[1:]) {
return true
}
return false
}