Ejemplo n.º 1
0
// GET: /node/{id}
func (cr *NodeController) Read(id string, cx *goweb.Context) {
	// Log Request and check for Auth
	LogRequest(cx.Request)
	u, err := AuthenticateRequest(cx.Request)
	if err != nil {
		// No Auth is not damning. Other errors are probably a dead db connection
		if err.Error() != e.NoAuth {
			if err.Error() == e.MongoDocNotFound {
				cx.RespondWithErrorMessage("Invalid username or password", http.StatusBadRequest)
				return
			} else {
				fmt.Println("Error at Auth:", err.Error())
				cx.RespondWithError(http.StatusInternalServerError)
				return
			}
		}
	}

	// Fake public user
	if u == nil {
		u = &user.User{Uuid: ""}
	}

	// Gather query params and setup flags
	query := cx.Request.URL.Query()
	_, download := query["download"]
	_, pipe := query["pipe"]
	_, list := query["list"]

	// Load node and handle user unauthorized
	node, err := ds.LoadNode(id, u.Uuid)
	if err != nil {
		if err.Error() == e.UnAuth {
			fmt.Println("Unauthorized")
			cx.RespondWithError(http.StatusUnauthorized)
			return
		} else if err.Error() == e.MongoDocNotFound {
			cx.RespondWithNotFound()
			return
		} else {
			// In theory the db connection could be lost between
			// checking user and load but seems unlikely.
			fmt.Println("Err@node_Read:LoadNode:", err.Error())
			cx.RespondWithError(http.StatusInternalServerError)
			return
		}
	}

	// Switch though param flags
	if download {
		if node.File.Empty() {
			cx.RespondWithErrorMessage("node file not found", http.StatusBadRequest)
			return
		}
		_, index := query["index"]
		_, part := query["part"]
		_, chunksize := query["chunksize"]
		if index {
			if query["index"][0] == "size" {
				if part {
					var csize int64 = 1048576
					if chunksize {
						csize, err = strconv.ParseInt(query["chunksize"][0], 10, 64)
						if err != nil {
							cx.RespondWithErrorMessage("Invalid chunksize", http.StatusBadRequest)
							return
						}
					}
					var size int64 = 0
					s := &partStreamer{rs: []*io.SectionReader{}, ws: cx.ResponseWriter, contentType: "application/octet-stream", filename: node.Id}
					r, err := os.Open(node.DataPath())
					if err != nil {
						fmt.Println("Err@node_Read:Open:", err.Error())
						cx.RespondWithError(http.StatusInternalServerError)
						return
					}
					defer r.Close()
					for _, p := range query["part"] {
						pInt, err := strconv.ParseInt(p, 10, 64)
						if err != nil {
							cx.RespondWithErrorMessage("Invalid index part", http.StatusBadRequest)
							return
						}
						pos, length, err := node.File.SizeOffset(pInt, csize)
						if err != nil {
							cx.RespondWithErrorMessage("Invalid index part", http.StatusBadRequest)
							return
						}
						size += length
						s.rs = append(s.rs, io.NewSectionReader(r, pos, length))
					}
					s.size = size
					err = s.stream()
					if err != nil {
						fmt.Println("err", err.Error())
					}
				} else {
					cx.RespondWithErrorMessage("Index parameter requires part parameter", http.StatusBadRequest)
					return
				}
			} else {
				if node.HasIndex(query["index"][0]) {
					idx := ds.NewIndex()
					err = idx.Load(fmt.Sprintf("%s/%s", node.IndexPath(), query["index"][0]))
					if err != nil {
						fmt.Println(err.Error())
						cx.RespondWithErrorMessage("Error loading index", http.StatusBadRequest)
						return
					}
					var size int64 = 0
					s := &partStreamer{rs: []*io.SectionReader{}, ws: cx.ResponseWriter, contentType: "application/octet-stream", filename: node.Id}
					r, err := os.Open(node.DataPath())
					if err != nil {
						fmt.Println("Err@node_Read:Open:", err.Error())
						cx.RespondWithError(http.StatusInternalServerError)
						return
					}
					defer r.Close()
					for _, p := range query["part"] {
						pInt, err := strconv.ParseInt(p, 10, 64)
						if err != nil {
							cx.RespondWithErrorMessage("Invalid index part", http.StatusBadRequest)
							return
						}
						p, ok1 := idx.Idx[(pInt - 1)][0].(float64)
						l, ok2 := idx.Idx[(pInt - 1)][1].(float64)
						if !ok1 || !ok2 {
							cx.RespondWithErrorMessage("Malformed index", http.StatusBadRequest)
							return
						}
						pos := int64(p)
						length := int64(l)
						size += length
						s.rs = append(s.rs, io.NewSectionReader(r, pos, length))
					}
					s.size = size
					err = s.stream()
					if err != nil {
						fmt.Println("err", err.Error())
					}
				} else {
					cx.RespondWithErrorMessage("Index not found", http.StatusBadRequest)
					return
				}
			}
		} else {
			nf, err := os.Open(node.DataPath())
			if err != nil {
				// File not found or some sort of file read error.
				// Probably deserves more checking
				fmt.Println("err", err.Error())
				cx.RespondWithError(http.StatusBadRequest)
				return
			}
			s := &streamer{rs: nf, ws: cx.ResponseWriter, contentType: "application/octet-stream", filename: node.Id, size: node.File.Size}
			err = s.stream()
			if err != nil {
				fmt.Println("err", err.Error())
			}
		}
		return
	} else if pipe {
		cx.RespondWithError(http.StatusNotImplemented)
	} else if list {
		cx.RespondWithError(http.StatusNotImplemented)
	} else {
		// Base case respond with node in json
		cx.RespondWithData(node)
	}
}
Ejemplo n.º 2
0
// PUT: /node/{id} -> multipart-form
func (cr *NodeController) Update(id string, cx *goweb.Context) {
	// Log Request and check for Auth
	LogRequest(cx.Request)
	u, err := AuthenticateRequest(cx.Request)
	if err != nil {
		// No Auth is not damning. Other errors are probably a dead db connection
		if err.Error() != e.NoAuth {
			if err.Error() == e.MongoDocNotFound {
				cx.RespondWithErrorMessage("Invalid username or password", http.StatusBadRequest)
				return
			} else {
				fmt.Println("Error at Auth:", err.Error())
				cx.RespondWithError(http.StatusInternalServerError)
				return
			}
		}
	}

	// Fake public user
	if u == nil {
		u = &user.User{Uuid: ""}
	}

	node, err := ds.LoadNode(id, u.Uuid)
	if err != nil {
		if err.Error() == e.UnAuth {
			fmt.Println("Unauthorized")
			cx.RespondWithError(http.StatusUnauthorized)
			return
		} else if err.Error() == e.MongoDocNotFound {
			cx.RespondWithNotFound()
			return
		} else {
			// In theory the db connection could be lost between
			// checking user and load but seems unlikely.
			fmt.Println("Err@node_Update:LoadNode:", err.Error())
			cx.RespondWithError(http.StatusInternalServerError)
			return
		}
	}

	params, files, err := ParseMultipartForm(cx.Request)
	if err != nil {
		fmt.Println("err", err.Error())
		cx.RespondWithError(http.StatusBadRequest)
		return
	}

	err = node.Update(params, files)
	if err != nil {
		errors := []string{"node file already set and is immutable", "node file immutable", "node attributes immutable", "node part already exists and is immutable"}
		for e := range errors {
			if err.Error() == errors[e] {
				cx.RespondWithErrorMessage(err.Error(), http.StatusBadRequest)
				return
			}
		}
		fmt.Println("err", err.Error())
		cx.RespondWithError(http.StatusBadRequest)
		return
	}
	cx.RespondWithData(node)
	return
}