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Clean up path handling in webserver.

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This commit is contained in:
Juliusz Chroboczek 2021-02-07 01:42:31 +01:00
parent c4e26b65b7
commit 8f89ac0bcf
2 changed files with 43 additions and 9 deletions
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21
webserver/webserver.go
View file

@ -242,20 +242,23 @@ func serveFile(w http.ResponseWriter, r *http.Request, p string) {
http.ServeContent(w, r, fi.Name(), fi.ModTime(), f)
}
func parseGroupName(path string) string {
if !strings.HasPrefix(path, "/group/") {
func parseGroupName(prefix string, p string) string {
if !strings.HasPrefix(p, prefix) {
return ""
}
name := path[len("/group/"):]
name := p[len("/group/"):]
if name == "" {
return ""
}
if name[len(name)-1] == '/' {
name = name[:len(name)-1]
if filepath.Separator != '/' &&
strings.ContainsRune(name, filepath.Separator) {
return ""
}
return name
name = path.Clean("/" + name)
return name[1:]
}
func groupHandler(w http.ResponseWriter, r *http.Request) {
@ -264,14 +267,14 @@ func groupHandler(w http.ResponseWriter, r *http.Request) {
}
mungeHeader(w)
name := parseGroupName(r.URL.Path)
name := parseGroupName("/group/", r.URL.Path)
if name == "" {
notFound(w)
return
}
if strings.HasSuffix(r.URL.Path, "/") {
http.Redirect(w, r, r.URL.Path[:len(r.URL.Path)-1],
if r.URL.Path != "/group/" + name {
http.Redirect(w, r, "/group/" + name,
http.StatusPermanentRedirect)
return
}

31
webserver/webserver_test.go Normal file
View file

@ -0,0 +1,31 @@
package webserver
import (
"testing"
)
func TestParseGroupName(t *testing.T) {
a := []struct{ p, g string }{
{"", ""},
{"/foo", ""},
{"foo", ""},
{"group/foo", ""},
{"/group", ""},
{"/group/..", ""},
{"/group/foo/../bar", "bar"},
{"/group/foo", "foo"},
{"/group/foo/", "foo"},
{"/group/foo/bar", "foo/bar"},
{"/group/foo/bar/", "foo/bar"},
}
for _, pg := range a {
t.Run(pg.p, func(t *testing.T) {
g := parseGroupName("/group/", pg.p)
if g != pg.g {
t.Errorf("Path %v, got %v, expected %v",
pg.p, g, pg.g)
}
})
}
}