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9f95b7b18c
Currently, there are some unit tests that are failing on Windows due to various reasons: - paths not properly joined (filepath.Join should be used). - Proxy Mode IPVS not supported on Windows. - DeadlineExceeded can occur when trying to read data from an UDP socket. This can be used to detect whether the port was closed or not. - In Windows, with long file name support enabled, file names can have up to 32,767 characters. In this case, the error windows.ERROR_FILENAME_EXCED_RANGE will be encountered instead. - files not closed, which means that they cannot be removed / renamed. - time.Now() is not as precise on Windows, which means that 2 consecutive calls may return the same timestamp. - path.Base() will return the same path. filepath.Base() should be used instead. - path.Join() will always join the paths with a / instead of the OS specific separator. filepath.Join() should be used instead.
71 lines
2.2 KiB
Go
71 lines
2.2 KiB
Go
/*
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Copyright 2014 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package routes
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import (
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"net/http"
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"os"
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"path"
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"github.com/emicklei/go-restful/v3"
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)
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// Logs adds handlers for the /logs path serving log files from /var/log.
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type Logs struct{}
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// Install func registers the logs handler.
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func (l Logs) Install(c *restful.Container) {
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// use restful: ws.Route(ws.GET("/logs/{logpath:*}").To(fileHandler))
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// See github.com/emicklei/go-restful/blob/master/examples/static/restful-serve-static.go
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ws := new(restful.WebService)
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ws.Path("/logs")
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ws.Doc("get log files")
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ws.Route(ws.GET("/{logpath:*}").To(logFileHandler).Param(ws.PathParameter("logpath", "path to the log").DataType("string")))
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ws.Route(ws.GET("/").To(logFileListHandler))
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c.Add(ws)
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}
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func logFileHandler(req *restful.Request, resp *restful.Response) {
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logdir := "/var/log"
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actual := path.Join(logdir, req.PathParameter("logpath"))
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// check filename length first, return 404 if it's oversize.
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if logFileNameIsTooLong(actual) {
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http.Error(resp, "file not found", http.StatusNotFound)
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return
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}
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http.ServeFile(resp.ResponseWriter, req.Request, actual)
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}
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func logFileListHandler(req *restful.Request, resp *restful.Response) {
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logdir := "/var/log"
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http.ServeFile(resp.ResponseWriter, req.Request, logdir)
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}
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// logFileNameIsTooLong checks filename length, returns true if it's longer than 255.
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// cause http.ServeFile returns default error code 500 except for NotExist and Forbidden, but we need to separate the real 500 from oversize filename here.
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func logFileNameIsTooLong(filePath string) bool {
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_, err := os.Stat(filePath)
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if err != nil {
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if e, ok := err.(*os.PathError); ok && e.Err == fileNameTooLong {
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return true
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}
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}
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return false
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}
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