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aliasHandler.go
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aliasHandler.go
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package serverHandler
import (
"mjpclab.dev/ghfs/src/middleware"
"mjpclab.dev/ghfs/src/param"
"mjpclab.dev/ghfs/src/serverLog"
"mjpclab.dev/ghfs/src/tpl"
"mjpclab.dev/ghfs/src/user"
"net/http"
"regexp"
"strings"
)
var defaultHandler = http.NotFoundHandler()
var createFileServer func(root string) http.Handler
type pathStrings struct {
path string
strings []string
}
type aliasParam struct {
users user.List
theme tpl.Theme
logger *serverLog.Logger
shows *regexp.Regexp
showDirs *regexp.Regexp
showFiles *regexp.Regexp
hides *regexp.Regexp
hideDirs *regexp.Regexp
hideFiles *regexp.Regexp
headersUrls []pathHeaders
headersDirs []pathHeaders
restrictAccess bool
restrictAccessUrls []pathStrings
restrictAccessDirs []pathStrings
pageVaryV1 string
pageVary string
contentVaryV1 string
contentVary string
}
type aliasHandler struct {
root string
emptyRoot bool
forceDirSlash int
globalHsts bool
globalHttps bool
httpsPort string // with prefix ":"
defaultSort string
aliasPrefix string
users user.List
theme tpl.Theme
logger *serverLog.Logger
shows *regexp.Regexp
showDirs *regexp.Regexp
showFiles *regexp.Regexp
hides *regexp.Regexp
hideDirs *regexp.Regexp
hideFiles *regexp.Regexp
dirIndexes []string
aliases aliases
restrictAccess bool
globalRestrictAccess []string
restrictAccessUrls []pathStrings
restrictAccessDirs []pathStrings
globalHeaders [][2]string
headersUrls []pathHeaders
headersDirs []pathHeaders
globalUpload bool
uploadUrls []string
uploadDirs []string
globalMkdir bool
mkdirUrls []string
mkdirDirs []string
globalDelete bool
deleteUrls []string
deleteDirs []string
globalArchive bool
archiveUrls []string
archiveDirs []string
globalCors bool
corsUrls []string
corsDirs []string
globalAuth bool
authUrls []string
authDirs []string
pageVaryV1 string
pageVary string
contentVaryV1 string
contentVary string
middlewares []middleware.Middleware
fileServer http.Handler
}
func (h *aliasHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
h.logRequest(r)
// hsts redirect
if h.globalHsts && h.hsts(w, r) {
return
}
// https redirect
if h.globalHttps && h.https(w, r) {
return
}
// asset
const assetPrefix = "asset="
if strings.HasPrefix(r.URL.RawQuery, assetPrefix) {
assetPath := r.URL.RawQuery[len(assetPrefix):]
h.asset(w, r, assetPath)
return
}
// data
data, fsPath := h.getResponseData(r)
h.logErrors(data.errors)
file := data.File
if file != nil {
defer file.Close()
}
if data.NeedAuth {
h.needAuth(w, r)
}
if !data.AuthSuccess {
h.authFailed(w)
return
}
if !data.AllowAccess {
restrictAccess(w)
return
}
if data.NeedDirSlashRedirect {
h.redirectWithSlashSuffix(w, r, data.prefixReqPath)
return
}
header(w, data.Headers)
if data.CanCors {
cors(w)
}
if data.IsMutate {
h.mutate(w, r, data)
return
}
// archive
if len(r.URL.RawQuery) >= 3 {
switch r.URL.RawQuery[:3] {
case "tar":
h.tar(w, r, data)
return
case "tgz":
h.tgz(w, r, data)
return
case "zip":
h.zip(w, r, data)
return
}
}
// middlewares
if h.middleware(w, r, data, fsPath) {
return
}
// final process
item := data.Item
if data.WantJson {
h.json(w, r, data)
} else if shouldServeAsContent(file, item) {
h.content(w, r, data)
} else {
h.page(w, r, data)
}
}
func newAliasHandler(
p *param.Param,
ap *aliasParam,
currentAlias alias,
allAliases aliases,
) http.Handler {
emptyRoot := p.EmptyRoot && currentAlias.url == "/"
aliases := aliases{}
for _, alias := range allAliases {
if alias.isSuccessorOf(currentAlias.url) {
aliases = append(aliases, alias)
}
}
var fileServer http.Handler
if !emptyRoot && createFileServer != nil { // for WSL 1 fix
fileServer = createFileServer(currentAlias.fs)
}
h := &aliasHandler{
root: currentAlias.fs,
emptyRoot: emptyRoot,
forceDirSlash: p.ForceDirSlash,
globalHsts: p.GlobalHsts,
globalHttps: p.GlobalHttps,
httpsPort: p.HttpsPort,
defaultSort: p.DefaultSort,
aliasPrefix: currentAlias.url,
users: ap.users,
theme: ap.theme,
logger: ap.logger,
dirIndexes: p.DirIndexes,
aliases: aliases,
restrictAccess: ap.restrictAccess,
globalRestrictAccess: p.GlobalRestrictAccess,
restrictAccessUrls: ap.restrictAccessUrls,
restrictAccessDirs: ap.restrictAccessDirs,
globalHeaders: p.GlobalHeaders,
headersUrls: ap.headersUrls,
headersDirs: ap.headersDirs,
globalUpload: p.GlobalUpload,
uploadUrls: p.UploadUrls,
uploadDirs: p.UploadDirs,
globalMkdir: p.GlobalMkdir,
mkdirUrls: p.MkdirUrls,
mkdirDirs: p.MkdirDirs,
globalDelete: p.GlobalDelete,
deleteUrls: p.DeleteUrls,
deleteDirs: p.DeleteDirs,
globalArchive: p.GlobalArchive,
archiveUrls: p.ArchiveUrls,
archiveDirs: p.ArchiveDirs,
globalCors: p.GlobalCors,
corsUrls: p.CorsUrls,
corsDirs: p.CorsDirs,
globalAuth: p.GlobalAuth,
authUrls: p.AuthUrls,
authDirs: p.AuthDirs,
shows: ap.shows,
showDirs: ap.showDirs,
showFiles: ap.showFiles,
hides: ap.hides,
hideDirs: ap.hideDirs,
hideFiles: ap.hideFiles,
fileServer: fileServer,
pageVaryV1: ap.pageVaryV1,
pageVary: ap.pageVary,
contentVaryV1: ap.contentVaryV1,
contentVary: ap.contentVary,
middlewares: p.Middlewares,
}
return h
}