mirror of
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54fe5f9c5c
Prior, we would decide how to serve a file based on whether it was local or remote at a router level. This moves everything to an io.Copy call in the router with the Provider returning an io.Reader.
146 lines
3.6 KiB
Go
146 lines
3.6 KiB
Go
package router
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import (
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"encoding/json"
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"fmt"
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"io"
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"net/http"
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"net/url"
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"sort"
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"strings"
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"github.com/gmemstr/nas/files"
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"github.com/gorilla/mux"
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)
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func handleProvider() handler {
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return func(context *requestContext, w http.ResponseWriter, r *http.Request) *httpError {
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vars := mux.Vars(r)
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providerCodename := vars["provider"]
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providerCodename = strings.Replace(providerCodename, "/", "", -1)
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provider := *files.Providers[providerCodename]
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// Directory listing or serve file.
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if r.Method == "GET" {
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filename, err := url.QueryUnescape(vars["file"])
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if err != nil {
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return &httpError{
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Message: fmt.Sprintf("error determining filetype for %s\n", filename),
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StatusCode: http.StatusInternalServerError,
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}
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}
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ok, isDir, _ := provider.ObjectInfo(filename)
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if !ok {
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return &httpError{
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Message: fmt.Sprintf("error locating file %s\n", filename),
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StatusCode: http.StatusNotFound,
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}
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}
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if isDir {
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fileList := provider.GetDirectory(filename)
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data, err := json.Marshal(fileList)
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if err != nil {
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return &httpError{
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Message: fmt.Sprintf("error fetching filelisting for %s\n", vars["file"]),
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StatusCode: http.StatusNotFound,
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}
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}
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w.Write(data)
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return nil
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} else {
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stream, contenttype, err := provider.SendFile(filename, w)
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if err != nil {
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return &httpError{
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Message: fmt.Sprintf("error finding file %s\n", vars["file"]),
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StatusCode: http.StatusNotFound,
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}
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}
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w.Header().Set("Content-Type", contenttype)
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_, err = io.Copy(w, stream)
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if err != nil {
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return &httpError{
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Message: fmt.Sprintf("unable to write %s\n", vars["file"]),
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StatusCode: http.StatusBadGateway,
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}
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}
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}
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return nil
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}
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// File upload or directory creation.
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if r.Method == "POST" {
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xType := r.Header.Get("X-NAS-Type")
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// We only really care about this header of creating a directory.
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if xType == "directory" {
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dirname := vars["file"]
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success := provider.CreateDirectory(dirname)
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if !success {
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return &httpError{
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Message: fmt.Sprintf("error creating directory %s\n", dirname),
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StatusCode: http.StatusInternalServerError,
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}
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}
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_, _ = w.Write([]byte("created directory"))
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return nil
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}
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err := r.ParseMultipartForm(32 << 20)
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if err != nil {
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return &httpError{
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Message: fmt.Sprintf("error parsing form for %s\n", vars["file"]),
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StatusCode: http.StatusInternalServerError,
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}
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}
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file, handler, err := r.FormFile("file")
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defer file.Close()
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success := provider.SaveFile(file, handler.Filename, vars["file"])
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if !success {
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return &httpError{
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Message: fmt.Sprintf("error saving file %s\n", vars["file"]),
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StatusCode: http.StatusInternalServerError,
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}
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}
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_, _ = w.Write([]byte("saved file"))
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}
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// Delete file.
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if r.Method == "DELETE" {
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path := vars["file"]
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success := provider.Delete(path)
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if !success {
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return &httpError{
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Message: fmt.Sprintf("error deleting %s\n", path),
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StatusCode: http.StatusInternalServerError,
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}
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}
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_, _ = w.Write([]byte("deleted"))
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}
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return nil
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}
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}
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func listProviders() handler {
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return func(context *requestContext, w http.ResponseWriter, r *http.Request) *httpError {
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var providers []string
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for v := range files.ProviderConfig {
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providers = append(providers, v)
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}
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sort.Strings(providers)
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data, err := json.Marshal(providers)
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if err != nil {
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return &httpError{
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Message: fmt.Sprintf("error provider listing"),
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StatusCode: http.StatusInternalServerError,
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}
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}
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_, _ = w.Write(data)
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return nil
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}
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}
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