mirror of
https://github.com/yusing/godoxy.git
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97 lines
2.5 KiB
Go
97 lines
2.5 KiB
Go
package middleware
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import (
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"fmt"
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"net/http"
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"path"
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"strings"
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"github.com/yusing/go-proxy/internal/common"
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E "github.com/yusing/go-proxy/internal/error"
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"github.com/yusing/go-proxy/internal/utils"
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"github.com/yusing/go-proxy/internal/utils/strutils"
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)
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var allMiddlewares map[string]*Middleware
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var (
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ErrUnknownMiddleware = E.New("unknown middleware")
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ErrDuplicatedMiddleware = E.New("duplicated middleware")
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)
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func Get(name string) (*Middleware, Error) {
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middleware, ok := allMiddlewares[strutils.ToLowerNoSnake(name)]
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if !ok {
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return nil, ErrUnknownMiddleware.
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Subject(name).
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Withf(strutils.DoYouMean(utils.NearestField(name, allMiddlewares)))
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}
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return middleware, nil
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}
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func All() map[string]*Middleware {
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return allMiddlewares
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}
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// initialize middleware names and label parsers.
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func init() {
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// snakes and cases will be stripped on `Get`
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// so keys are lowercase without snake.
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allMiddlewares = map[string]*Middleware{
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"setxforwarded": SetXForwarded,
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"hidexforwarded": HideXForwarded,
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"redirecthttp": RedirectHTTP,
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"modifyresponse": ModifyResponse,
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"modifyrequest": ModifyRequest,
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"errorpage": CustomErrorPage,
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"customerrorpage": CustomErrorPage,
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"realip": RealIP,
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"cloudflarerealip": CloudflareRealIP,
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"cidrwhitelist": CIDRWhiteList,
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"ratelimit": RateLimiter,
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// !experimental
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"forwardauth": ForwardAuth,
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// "oauth2": OAuth2.m,
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}
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names := make(map[*Middleware][]string)
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for name, m := range allMiddlewares {
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names[m] = append(names[m], http.CanonicalHeaderKey(name))
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}
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for m, names := range names {
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if len(names) > 1 {
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m.name = fmt.Sprintf("%s (a.k.a. %s)", names[0], strings.Join(names[1:], ", "))
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} else {
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m.name = names[0]
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}
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}
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}
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func LoadComposeFiles() {
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errs := E.NewBuilder("middleware compile errors")
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middlewareDefs, err := utils.ListFiles(common.MiddlewareComposeBasePath, 0)
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if err != nil {
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logger.Err(err).Msg("failed to list middleware definitions")
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return
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}
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for _, defFile := range middlewareDefs {
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mws := BuildMiddlewaresFromComposeFile(defFile, errs)
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if len(mws) == 0 {
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continue
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}
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for name, m := range mws {
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if _, ok := allMiddlewares[name]; ok {
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errs.Add(ErrDuplicatedMiddleware.Subject(name))
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continue
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}
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allMiddlewares[strutils.ToLowerNoSnake(name)] = m
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logger.Info().
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Str("name", name).
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Str("src", path.Base(defFile)).
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Msg("middleware loaded")
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}
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}
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if errs.HasError() {
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E.LogError(errs.About(), errs.Error(), &logger)
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}
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}
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