mirror of
https://github.com/caddyserver/caddy.git
synced 2024-11-26 10:13:39 +08:00
e158cda057
Most of the Windows test failures are due to the path separator not being "/". The general approach I took here was to keep paths in "URL form" (ie using "/" separators) as much as possible, and only convert to native paths when we attempt to open a file. This will allow the most consistency between different host OS. For example, data structures that store paths still store them with "/" delimiters. Functions that accepted paths as input and return them as outputs still use "/". There are still a few test failures that need to be sorted out. - config/setup/TestRoot (I hear this has already been fixed by someone else) - middleware/basicauth/TestBrowseTemplate and middleware/templates/Test (a line endings issue that I'm still working through)
81 lines
3.3 KiB
Go
81 lines
3.3 KiB
Go
// Package middleware provides some types and functions common among middleware.
|
|
package middleware
|
|
|
|
import (
|
|
"net/http"
|
|
"path"
|
|
)
|
|
|
|
type (
|
|
// Middleware is the middle layer which represents the traditional
|
|
// idea of middleware: it chains one Handler to the next by being
|
|
// passed the next Handler in the chain.
|
|
Middleware func(Handler) Handler
|
|
|
|
// Handler is like http.Handler except ServeHTTP returns a status code
|
|
// and an error. The status code is for the client's benefit; the error
|
|
// value is for the server's benefit. The status code will be sent to
|
|
// the client while the error value will be logged privately. Sometimes,
|
|
// an error status code (4xx or 5xx) may be returned with a nil error
|
|
// when there is no reason to log the error on the server.
|
|
//
|
|
// If a HandlerFunc returns an error (status >= 400), it should NOT
|
|
// write to the response. This philosophy makes middleware.Handler
|
|
// different from http.Handler: error handling should happen at the
|
|
// application layer or in dedicated error-handling middleware only
|
|
// rather than with an "every middleware for itself" paradigm.
|
|
//
|
|
// The application or error-handling middleware should incorporate logic
|
|
// to ensure that the client always gets a proper response according to
|
|
// the status code. For security reasons, it should probably not reveal
|
|
// the actual error message. (Instead it should be logged, for example.)
|
|
//
|
|
// Handlers which do write to the response should return a status value
|
|
// < 400 as a signal that a response has been written. In other words,
|
|
// only error-handling middleware or the application will write to the
|
|
// response for a status code >= 400. When ANY handler writes to the
|
|
// response, it should return a status code < 400 to signal others to
|
|
// NOT write to the response again, which would be erroneous.
|
|
Handler interface {
|
|
ServeHTTP(http.ResponseWriter, *http.Request) (int, error)
|
|
}
|
|
|
|
// HandlerFunc is a convenience type like http.HandlerFunc, except
|
|
// ServeHTTP returns a status code and an error. See Handler
|
|
// documentation for more information.
|
|
HandlerFunc func(http.ResponseWriter, *http.Request) (int, error)
|
|
)
|
|
|
|
// ServeHTTP implements the Handler interface.
|
|
func (f HandlerFunc) ServeHTTP(w http.ResponseWriter, r *http.Request) (int, error) {
|
|
return f(w, r)
|
|
}
|
|
|
|
// IndexFile looks for a file in /root/fpath/indexFile for each string
|
|
// in indexFiles. If an index file is found, it returns the root-relative
|
|
// path to the file and true. If no index file is found, empty string
|
|
// and false is returned. fpath must end in a forward slash '/'
|
|
// otherwise no index files will be tried (directory paths must end
|
|
// in a forward slash according to HTTP).
|
|
//
|
|
// All paths passed into and returned from this function use '/' as the
|
|
// path separator, just like URLs. IndexFle handles path manipulation
|
|
// internally for systems that use different path separators.
|
|
func IndexFile(root http.FileSystem, fpath string, indexFiles []string) (string, bool) {
|
|
if fpath[len(fpath)-1] != '/' || root == nil {
|
|
return "", false
|
|
}
|
|
for _, indexFile := range indexFiles {
|
|
// func (http.FileSystem).Open wants all paths separated by "/",
|
|
// regardless of operating system convention, so use
|
|
// path.Join instead of filepath.Join
|
|
fp := path.Join(fpath, indexFile)
|
|
f, err := root.Open(fp)
|
|
if err == nil {
|
|
f.Close()
|
|
return fp, true
|
|
}
|
|
}
|
|
return "", false
|
|
}
|