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caddy/modules/caddyhttp/fileserver/matcher.go

55 lines
1.4 KiB
Go

package fileserver
import (
"net/http"
"os"
"bitbucket.org/lightcodelabs/caddy2"
"bitbucket.org/lightcodelabs/caddy2/modules/caddyhttp"
)
func init() {
caddy2.RegisterModule(caddy2.Module{
Name: "http.matchers.file",
New: func() (interface{}, error) { return new(FileMatcher), nil },
})
}
// FileMatcher is a matcher that can match requests
// based on the local file system.
// TODO: Not sure how to do this well; we'd need the ability to
// hide files, etc...
// TODO: Also consider a feature to match directory that
// contains a certain filename (use filepath.Glob), useful
// if wanting to map directory-URI requests where the dir
// has index.php to PHP backends, for example (although this
// can effectively be done with rehandling already)
type FileMatcher struct {
Root string `json:"root"`
Path string `json:"path"`
Flags []string `json:"flags"`
}
// Match matches the request r against m.
func (m FileMatcher) Match(r *http.Request) bool {
fullPath := sanitizedPathJoin(m.Root, m.Path)
var match bool
if len(m.Flags) > 0 {
match = true
fi, err := os.Stat(fullPath)
for _, f := range m.Flags {
switch f {
case "EXIST":
match = match && os.IsNotExist(err)
case "DIR":
match = match && err == nil && fi.IsDir()
default:
match = false
}
}
}
return match
}
// Interface guard
var _ caddyhttp.RequestMatcher = (*FileMatcher)(nil)