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checker.go
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checker.go
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/*
Nging is a toolbox for webmasters
Copyright (C) 2018-present Wenhui Shen <swh@admpub.com>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published
by the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package checker
import (
"time"
"github.com/webx-top/echo"
"github.com/webx-top/echo/code"
)
// UploadURLMaxAge 上传链接生存时间
var UploadURLMaxAge int64 = 86400
// Checker 验证并生成子文件夹名称和文件名称
type Checker func(echo.Context) (subdir string, name string, err error)
// DefaultNoCheck 默认 Checker
var DefaultNoCheck = func(ctx echo.Context) (subdir string, name string, err error) {
subdir = time.Now().Format(`2006/01/02/`)
return
}
var DefaultWithVerify = func(ctx echo.Context) (subdir string, name string, err error) {
timestamp := ctx.Formx(`time`).Int64()
// 验证签名(避免上传接口被滥用)
token := Token(ctx.Queries())
if ctx.Form(`token`) != token {
//echo.Dump(map[string]string{`form-token`: ctx.Form(`token`), `expected-token`: token})
err = ctx.NewError(code.InvalidParameter, `令牌错误`)
return
}
if time.Now().Unix()-timestamp > UploadURLMaxAge {
err = ctx.NewError(code.DataHasExpired, `上传网址已过期`)
return
}
return DefaultNoCheck(ctx)
}