mirror of
https://github.com/caddyserver/caddy.git
synced 2025-10-31 10:37:24 -04:00
113 lines
2.9 KiB
Go
113 lines
2.9 KiB
Go
package gzip
|
|
|
|
import (
|
|
"net/http"
|
|
"path"
|
|
"strings"
|
|
|
|
"github.com/mholt/caddy/middleware"
|
|
)
|
|
|
|
// Filter determines if a request should be gzipped.
|
|
type Filter interface {
|
|
// ShouldCompress tells if gzip compression
|
|
// should be done on the request.
|
|
ShouldCompress(*http.Request) bool
|
|
}
|
|
|
|
// ExtFilter is Filter for file name extensions.
|
|
type ExtFilter struct {
|
|
// Exts is the file name extensions to accept
|
|
Exts Set
|
|
}
|
|
|
|
// extWildCard is the wildcard for extensions.
|
|
const extWildCard = "*"
|
|
|
|
// ShouldCompress checks if the request file extension matches any
|
|
// of the registered extensions. It returns true if the extension is
|
|
// found and false otherwise.
|
|
func (e ExtFilter) ShouldCompress(r *http.Request) bool {
|
|
ext := path.Ext(r.URL.Path)
|
|
return e.Exts.Contains(extWildCard) || e.Exts.Contains(ext)
|
|
}
|
|
|
|
// PathFilter is Filter for request path.
|
|
type PathFilter struct {
|
|
// IgnoredPaths is the paths to ignore
|
|
IgnoredPaths Set
|
|
}
|
|
|
|
// ShouldCompress checks if the request path matches any of the
|
|
// registered paths to ignore. It returns false if an ignored path
|
|
// is found and true otherwise.
|
|
func (p PathFilter) ShouldCompress(r *http.Request) bool {
|
|
return !p.IgnoredPaths.ContainsFunc(func(value string) bool {
|
|
return middleware.Path(r.URL.Path).Matches(value)
|
|
})
|
|
}
|
|
|
|
// MIMEFilter is Filter for request content types.
|
|
type MIMEFilter struct {
|
|
// Types is the MIME types to accept.
|
|
Types Set
|
|
}
|
|
|
|
// defaultMIMETypes is the list of default MIME types to use.
|
|
var defaultMIMETypes = []string{
|
|
"text/plain", "text/html", "text/css", "application/json", "application/javascript",
|
|
"text/x-markdown", "text/xml", "application/xml",
|
|
}
|
|
|
|
// DefaultMIMEFilter creates a MIMEFilter with default types.
|
|
func DefaultMIMEFilter() MIMEFilter {
|
|
m := MIMEFilter{Types: make(Set)}
|
|
for _, mime := range defaultMIMETypes {
|
|
m.Types.Add(mime)
|
|
}
|
|
return m
|
|
}
|
|
|
|
// ShouldCompress checks if the content type of the request
|
|
// matches any of the registered ones. It returns true if
|
|
// found and false otherwise.
|
|
func (m MIMEFilter) ShouldCompress(r *http.Request) bool {
|
|
return m.Types.Contains(r.Header.Get("Content-Type"))
|
|
}
|
|
|
|
func ValidMIME(mime string) bool {
|
|
s := strings.Split(mime, "/")
|
|
return len(s) == 2 && strings.TrimSpace(s[0]) != "" && strings.TrimSpace(s[1]) != ""
|
|
}
|
|
|
|
// Set stores distinct strings.
|
|
type Set map[string]struct{}
|
|
|
|
// Add adds an element to the set.
|
|
func (s Set) Add(value string) {
|
|
s[value] = struct{}{}
|
|
}
|
|
|
|
// Remove removes an element from the set.
|
|
func (s Set) Remove(value string) {
|
|
delete(s, value)
|
|
}
|
|
|
|
// Contains check if the set contains value.
|
|
func (s Set) Contains(value string) bool {
|
|
_, ok := s[value]
|
|
return ok
|
|
}
|
|
|
|
// ContainsFunc is similar to Contains. It iterates all the
|
|
// elements in the set and passes each to f. It returns true
|
|
// on the first call to f that returns true and false otherwise.
|
|
func (s Set) ContainsFunc(f func(string) bool) bool {
|
|
for k, _ := range s {
|
|
if f(k) {
|
|
return true
|
|
}
|
|
}
|
|
return false
|
|
}
|