Merge remote-tracking branch 'upstream/master'

config/setup/browse.go

@@ -19,6 +19,7 @@ func Browse(c *Controller) (middleware.Middleware, error) {
 	browse := browse.Browse{
 		Root:          c.Root,
 		Configs:       configs,
+		IgnoreIndexes: false,
 	}
 
 	return func(next middleware.Handler) middleware.Handler {

config/setup/errors.go

@@ -25,16 +25,24 @@ func Errors(c *Controller) (middleware.Middleware, error) {
 		var err error
 		var writer io.Writer
 
-		if handler.LogFile == "stdout" {
+		switch handler.LogFile {
+		case "visible":
+			handler.Debug = true
+		case "stdout":
 			writer = os.Stdout
-		} else if handler.LogFile == "stderr" {
+		case "stderr":
 			writer = os.Stderr
-		} else if handler.LogFile == "syslog" {
+		case "syslog":
 			writer, err = gsyslog.NewLogger(gsyslog.LOG_ERR, "LOCAL0", "caddy")
 			if err != nil {
 				return err
 			}
-		} else if handler.LogFile != "" {
+		default:
+			if handler.LogFile == "" {
+				writer = os.Stderr // default
+				break
+			}
+
 			var file *os.File
 			file, err = os.OpenFile(handler.LogFile, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0644)
 			if err != nil {
@@ -80,6 +88,9 @@ func errorsParse(c *Controller) (*errors.ErrorHandler, error) {
 			where := c.Val()
 
 			if what == "log" {
+				if where == "visible" {
+					handler.Debug = true
+				} else {
 					handler.LogFile = where
 					if c.NextArg() {
 						if c.Val() == "{" {
@@ -91,6 +102,7 @@ func errorsParse(c *Controller) (*errors.ErrorHandler, error) {
 							handler.LogRoller = logRoller
 						}
 					}
+				}
 			} else {
 				// Error page; ensure it exists
 				where = path.Join(c.Root, where)
@@ -121,12 +133,14 @@ func errorsParse(c *Controller) (*errors.ErrorHandler, error) {
 			return handler, err
 		}
 
-		// Otherwise, the only argument would be an error log file name
+		// Otherwise, the only argument would be an error log file name or 'visible'
 		if !hadBlock {
 			if c.NextArg() {
-				handler.LogFile = c.Val()
+				if c.Val() == "visible" {
+					handler.Debug = true
 				} else {
-				handler.LogFile = errors.DefaultLogFilename
+					handler.LogFile = c.Val()
+				}
 			}
 		}
 	}

config/setup/errors_test.go

@@ -8,9 +8,7 @@ import (
 )
 
 func TestErrors(t *testing.T) {
-
 	c := NewTestController(`errors`)
-
 	mid, err := Errors(c)
 
 	if err != nil {
@@ -28,8 +26,8 @@ func TestErrors(t *testing.T) {
 		t.Fatalf("Expected handler to be type ErrorHandler, got: %#v", handler)
 	}
 
-	if myHandler.LogFile != errors.DefaultLogFilename {
-		t.Errorf("Expected %s as the default LogFile", errors.DefaultLogFilename)
+	if myHandler.LogFile != "" {
+		t.Errorf("Expected '%s' as the default LogFile", "")
 	}
 	if myHandler.LogRoller != nil {
 		t.Errorf("Expected LogRoller to be nil, got: %v", *myHandler.LogRoller)
@@ -37,6 +35,15 @@ func TestErrors(t *testing.T) {
 	if !SameNext(myHandler.Next, EmptyNext) {
 		t.Error("'Next' field of handler was not set properly")
 	}
+
+	// Test Startup function
+	if len(c.Startup) == 0 {
+		t.Fatal("Expected 1 startup function, had 0")
+	}
+	err = c.Startup[0]()
+	if myHandler.Log == nil {
+		t.Error("Expected Log to be non-nil after startup because Debug is not enabled")
+	}
 }
 
 func TestErrorsParse(t *testing.T) {
@@ -46,11 +53,19 @@ func TestErrorsParse(t *testing.T) {
 		expectedErrorHandler errors.ErrorHandler
 	}{
 		{`errors`, false, errors.ErrorHandler{
-			LogFile: errors.DefaultLogFilename,
+			LogFile: "",
 		}},
 		{`errors errors.txt`, false, errors.ErrorHandler{
 			LogFile: "errors.txt",
 		}},
+		{`errors visible`, false, errors.ErrorHandler{
+			LogFile: "",
+			Debug:   true,
+		}},
+		{`errors { log visible }`, false, errors.ErrorHandler{
+			LogFile: "",
+			Debug:   true,
+		}},
 		{`errors { log errors.txt
         404 404.html
         500 500.html
@@ -101,9 +116,13 @@ func TestErrorsParse(t *testing.T) {
 			t.Errorf("Test %d errored, but it shouldn't have; got '%v'", i, err)
 		}
 		if actualErrorsRule.LogFile != test.expectedErrorHandler.LogFile {
-			t.Errorf("Test %d expected LogFile to be  %s  , but got %s",
+			t.Errorf("Test %d expected LogFile to be %s, but got %s",
 				i, test.expectedErrorHandler.LogFile, actualErrorsRule.LogFile)
 		}
+		if actualErrorsRule.Debug != test.expectedErrorHandler.Debug {
+			t.Errorf("Test %d expected Debug to be %v, but got %v",
+				i, test.expectedErrorHandler.Debug, actualErrorsRule.Debug)
+		}
 		if actualErrorsRule.LogRoller != nil && test.expectedErrorHandler.LogRoller == nil || actualErrorsRule.LogRoller == nil && test.expectedErrorHandler.LogRoller != nil {
 			t.Fatalf("Test %d expected LogRoller to be %v, but got %v",
 				i, test.expectedErrorHandler.LogRoller, actualErrorsRule.LogRoller)

dist/CHANGES.txt

@@ -3,6 +3,12 @@ CHANGES
 <master>
 - basicauth: Support for legacy htpasswd files
 - browse: JSON response with file listing given Accept header
+- core: Caddyfile as command line argument
+- errors: Can write full stack trace to HTTP response for debugging
+- errors, log: Roll log files after certain size or age
+- proxy: Fix for 32-bit architectures
+- templates: Added .StripExt and .StripHTML methods
+- Internal improvements and minor bug fixes
 
 
 0.7.5 (August 5, 2015)

middleware/browse/browse.go

@@ -26,11 +26,13 @@ type Browse struct {
 	Next          middleware.Handler
 	Root          string
 	Configs       []Config
+	IgnoreIndexes bool
 }
 
 // Config is a configuration for browsing in a particular path.
 type Config struct {
 	PathScope string
+	Variables interface{}
 	Template  *template.Template
 }
 
@@ -54,6 +56,9 @@ type Listing struct {
 	// And which order
 	Order string
 
+	// Optional custom variables for use in browse templates
+	User interface{}
+
 	middleware.Context
 }
 
@@ -133,27 +138,20 @@ func (fi FileInfo) HumanModTime(format string) string {
 	return fi.ModTime.Format(format)
 }
 
-var IndexPages = []string{
-	"index.html",
-	"index.htm",
-	"index.txt",
-	"default.html",
-	"default.htm",
-	"default.txt",
-}
-
-func directoryListing(files []os.FileInfo, r *http.Request, canGoUp bool, root string) (Listing, error) {
+func directoryListing(files []os.FileInfo, r *http.Request, canGoUp bool, root string, ignoreIndexes bool, vars interface{}) (Listing, error) {
 	var fileinfos []FileInfo
 	var urlPath = r.URL.Path
 	for _, f := range files {
 		name := f.Name()
 
 		// Directory is not browsable if it contains index file
-		for _, indexName := range IndexPages {
+		if !ignoreIndexes {
+			for _, indexName := range middleware.IndexPages {
 				if name == indexName {
 					return Listing{}, errors.New("Directory contains index file, not browsable!")
 				}
 			}
+		}
 
 		if f.IsDir() {
 			name += "/"
@@ -181,6 +179,7 @@ func directoryListing(files []os.FileInfo, r *http.Request, canGoUp bool, root s
 			Req:  r,
 			URL:  r.URL,
 		},
+		User: vars,
 	}, nil
 }
 
@@ -234,7 +233,7 @@ func (b Browse) ServeHTTP(w http.ResponseWriter, r *http.Request) (int, error) {
 			}
 		}
 		// Assemble listing of directory contents
-		listing, err := directoryListing(files, r, canGoUp, b.Root)
+		listing, err := directoryListing(files, r, canGoUp, b.Root, b.IgnoreIndexes, bc.Variables)
 		if err != nil { // directory isn't browsable
 			continue
 		}

middleware/context.go

@@ -131,6 +131,53 @@ func (c Context) Truncate(input string, length int) string {
 	return input
 }
 
+// StripHTML returns s without HTML tags. It is fairly naive
+// but works with most valid HTML inputs.
+func (c Context) StripHTML(s string) string {
+	var buf bytes.Buffer
+	var inTag, inQuotes bool
+	var tagStart int
+	for i, ch := range s {
+		if inTag {
+			if ch == '>' && !inQuotes {
+				inTag = false
+			} else if ch == '<' && !inQuotes {
+				// false start
+				buf.WriteString(s[tagStart:i])
+				tagStart = i
+			} else if ch == '"' {
+				inQuotes = !inQuotes
+			}
+			continue
+		}
+		if ch == '<' {
+			inTag = true
+			tagStart = i
+			continue
+		}
+		buf.WriteRune(ch)
+	}
+	if inTag {
+		// false start
+		buf.WriteString(s[tagStart:])
+		inTag = false
+	}
+	return buf.String()
+}
+
+// StripExt returns the input string without the extension,
+// which is the suffix starting with the final '.' character
+// but not before the final path separator ('/') character.
+// If there is no extension, the whole input is returned.
+func (c Context) StripExt(path string) string {
+	for i := len(path) - 1; i >= 0 && path[i] != '/'; i-- {
+		if path[i] == '.' {
+			return path[:i]
+		}
+	}
+	return path
+}
+
 // Replace replaces instances of find in input with replacement.
 func (c Context) Replace(input, find, replacement string) string {
 	return strings.Replace(input, find, replacement, -1)

middleware/errors/errors.go

@@ -14,13 +14,14 @@ import (
 	"github.com/mholt/caddy/middleware"
 )
 
-// ErrorHandler handles HTTP errors (or errors from other middleware).
+// ErrorHandler handles HTTP errors (and errors from other middleware).
 type ErrorHandler struct {
 	Next       middleware.Handler
 	ErrorPages map[int]string // map of status code to filename
 	LogFile    string
 	Log        *log.Logger
 	LogRoller  *middleware.LogRoller
+	Debug      bool // if true, errors are written out to client rather than to a log
 }
 
 func (h ErrorHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) (int, error) {
@@ -29,12 +30,21 @@ func (h ErrorHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) (int, er
 	status, err := h.Next.ServeHTTP(w, r)
 
 	if err != nil {
-		h.Log.Printf("%s [ERROR %d %s] %v", time.Now().Format(timeFormat), status, r.URL.Path, err)
+		errMsg := fmt.Sprintf("%s [ERROR %d %s] %v", time.Now().Format(timeFormat), status, r.URL.Path, err)
+
+		if h.Debug {
+			// Write error to response instead of to log
+			w.WriteHeader(status)
+			fmt.Fprintln(w, errMsg)
+			return 0, err // returning < 400 signals that a response has been written
+		} else {
+			h.Log.Println(errMsg)
+		}
 	}
 
 	if status >= 400 {
-		h.errorPage(w, status)
-		return 0, err // status < 400 signals that a response has been written
+		h.errorPage(w, r, status)
+		return 0, err
 	}
 
 	return status, err
@@ -43,7 +53,7 @@ func (h ErrorHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) (int, er
 // errorPage serves a static error page to w according to the status
 // code. If there is an error serving the error page, a plaintext error
 // message is written instead, and the extra error is logged.
-func (h ErrorHandler) errorPage(w http.ResponseWriter, code int) {
+func (h ErrorHandler) errorPage(w http.ResponseWriter, r *http.Request, code int) {
 	defaultBody := fmt.Sprintf("%d %s", code, http.StatusText(code))
 
 	// See if an error page for this status code was specified
@@ -52,8 +62,9 @@ func (h ErrorHandler) errorPage(w http.ResponseWriter, code int) {
 		// Try to open it
 		errorPage, err := os.Open(pagePath)
 		if err != nil {
-			// An error handling an error... <insert grumpy cat here>
-			h.Log.Printf("HTTP %d could not load error page %s: %v", code, pagePath, err)
+			// An additional error handling an error... <insert grumpy cat here>
+			h.Log.Printf("%s [NOTICE %d %s] could not load error page: %v",
+				time.Now().Format(timeFormat), code, r.URL.String(), err)
 			http.Error(w, defaultBody, code)
 			return
 		}
@@ -66,7 +77,8 @@ func (h ErrorHandler) errorPage(w http.ResponseWriter, code int) {
 
 		if err != nil {
 			// Epic fail... sigh.
-			h.Log.Printf("HTTP %d could not respond with %s: %v", code, pagePath, err)
+			h.Log.Printf("%s [NOTICE %d %s] could not respond with %s: %v",
+				time.Now().Format(timeFormat), code, r.URL.String(), pagePath, err)
 			http.Error(w, defaultBody, code)
 		}
 
@@ -108,10 +120,18 @@ func (h ErrorHandler) recovery(w http.ResponseWriter, r *http.Request) {
 		file = file[pkgPathPos+len(delim):]
 	}
 
-	// Currently we don't use the function name, as file:line is more conventional
-	h.Log.Printf("%s [PANIC %s] %s:%d - %v", time.Now().Format(timeFormat), r.URL.String(), file, line, rec)
-	h.errorPage(w, http.StatusInternalServerError)
+	panicMsg := fmt.Sprintf("%s [PANIC %s] %s:%d - %v", time.Now().Format(timeFormat), r.URL.String(), file, line, rec)
+	if h.Debug {
+		// Write error and stack trace to the response rather than to a log
+		var stackBuf [4096]byte
+		stack := stackBuf[:runtime.Stack(stackBuf[:], false)]
+		w.WriteHeader(http.StatusInternalServerError)
+		fmt.Fprintf(w, "%s\n\n%s", panicMsg, stack)
+	} else {
+		// Currently we don't use the function name, since file:line is more conventional
+		h.Log.Printf(panicMsg)
+		h.errorPage(w, r, http.StatusInternalServerError)
+	}
 }
 
-const DefaultLogFilename = "error.log"
 const timeFormat = "02/Jan/2006:15:04:05 -0700"

middleware/errors/errors_test.go

@@ -33,11 +33,12 @@ func TestErrors(t *testing.T) {
 
 	buf := bytes.Buffer{}
 	em := ErrorHandler{
-		ErrorPages: make(map[int]string),
+		ErrorPages: map[int]string{
+			http.StatusNotFound:  path,
+			http.StatusForbidden: "not_exist_file",
+		},
 		Log: log.New(&buf, "", 0),
 	}
-	em.ErrorPages[http.StatusNotFound] = path
-	em.ErrorPages[http.StatusForbidden] = "not_exist_file"
 	_, notExistErr := os.Open("not_exist_file")
 
 	testErr := errors.New("test error")
@@ -82,8 +83,8 @@ func TestErrors(t *testing.T) {
 			expectedCode: 0,
 			expectedBody: fmt.Sprintf("%d %s\n", http.StatusForbidden,
 				http.StatusText(http.StatusForbidden)),
-			expectedLog: fmt.Sprintf("HTTP %d could not load error page %s: %v\n",
-				http.StatusForbidden, "not_exist_file", notExistErr),
+			expectedLog: fmt.Sprintf("[NOTICE %d /] could not load error page: %v\n",
+				http.StatusForbidden, notExistErr),
 			expectedErr: nil,
 		},
 	}
@@ -117,6 +118,44 @@ func TestErrors(t *testing.T) {
 	}
 }
 
+func TestVisibleErrorWithPanic(t *testing.T) {
+	const panicMsg = "I'm a panic"
+	eh := ErrorHandler{
+		ErrorPages: make(map[int]string),
+		Debug:      true,
+		Next: middleware.HandlerFunc(func(w http.ResponseWriter, r *http.Request) (int, error) {
+			panic(panicMsg)
+		}),
+	}
+
+	req, err := http.NewRequest("GET", "/", nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+	rec := httptest.NewRecorder()
+
+	code, err := eh.ServeHTTP(rec, req)
+
+	if code != 0 {
+		t.Errorf("Expected error handler to return 0 (it should write to response), got status %d", code)
+	}
+	if err != nil {
+		t.Errorf("Expected error handler to return nil error (it should panic!), but got '%v'", err)
+	}
+
+	body := rec.Body.String()
+
+	if !strings.Contains(body, "[PANIC /] middleware/errors/errors_test.go") {
+		t.Errorf("Expected response body to contain error log line, but it didn't:\n%s", body)
+	}
+	if !strings.Contains(body, panicMsg) {
+		t.Errorf("Expected response body to contain panic message, but it didn't:\n%s", body)
+	}
+	if len(body) < 500 {
+		t.Errorf("Expected response body to contain stack trace, but it was too short: len=%d", len(body))
+	}
+}
+
 func genErrorHandler(status int, err error, body string) middleware.Handler {
 	return middleware.HandlerFunc(func(w http.ResponseWriter, r *http.Request) (int, error) {
 		fmt.Fprint(w, body)

server/fileserver.go → middleware/fileserver.go

-package server
+package middleware
 
 import (
 	"net/http"
 	"os"
 	"path"
 	"strings"
-
-	"github.com/mholt/caddy/middleware"
-	"github.com/mholt/caddy/middleware/browse"
 )
 
+// This file contains a standard way for Caddy middleware
+// to load files from the file system given a request
+// URI and path to site root. Other middleware that load
+// files should use these facilities.
+
+// FileServer implements a production-ready file server
+// and is the 'default' handler for all requests to Caddy.
+// It simply loads and serves the URI requested. If Caddy is
+// run without any extra configuration/directives, this is the
+// only middleware handler that runs. It is not in its own
+// folder like most other middleware handlers because it does
+// not require a directive. It is a special case.
+//
 // FileServer is adapted from the one in net/http by
 // the Go authors. Significant modifications have been made.
 //
-//
-// License:
+// Original license:
 //
 // Copyright 2009 The Go Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
-func FileServer(root http.FileSystem, hide []string) middleware.Handler {
+func FileServer(root http.FileSystem, hide []string) Handler {
 	return &fileHandler{root: root, hide: hide}
 }
 
@@ -82,7 +91,7 @@ func (fh *fileHandler) serveFile(w http.ResponseWriter, r *http.Request, name st
 
 	// use contents of an index file, if present, for directory
 	if d.IsDir() {
-		for _, indexPage := range browse.IndexPages {
+		for _, indexPage := range IndexPages {
 			index := strings.TrimSuffix(name, "/") + "/" + indexPage
 			ff, err := fh.root.Open(index)
 			if err == nil {
@@ -134,3 +143,14 @@ func redirect(w http.ResponseWriter, r *http.Request, newPath string) {
 	}
 	http.Redirect(w, r, newPath, http.StatusMovedPermanently)
 }
+
+// IndexPages is a list of pages that may be understood as
+// the "index" files to directories.
+var IndexPages = []string{
+	"index.html",
+	"index.htm",
+	"index.txt",
+	"default.html",
+	"default.htm",
+	"default.txt",
+}

middleware/proxy/proxy.go

@@ -33,10 +33,9 @@ type UpstreamHostDownFunc func(*UpstreamHost) bool
 
 // UpstreamHost represents a single proxy upstream
 type UpstreamHost struct {
-	// The hostname of this upstream host
-	Name              string
+	Conns             int64  // must be first field to be 64-bit aligned on 32-bit systems
+	Name              string // hostname of this upstream host
 	ReverseProxy      *ReverseProxy
-	Conns             int64
 	Fails             int32
 	FailTimeout       time.Duration
 	Unhealthy         bool

middleware/replacer.go

@@ -3,6 +3,7 @@ package middleware
 import (
 	"net"
 	"net/http"
+	"path"
 	"strconv"
 	"strings"
 	"time"
@@ -63,6 +64,14 @@ func NewReplacer(r *http.Request, rr *responseRecorder, emptyValue string) Repla
 			"{when}": func() string {
 				return time.Now().Format(timeFormat)
 			}(),
+			"{file}": func() string {
+				_, file := path.Split(r.URL.Path)
+				return file
+			}(),
+			"{dir}": func() string {
+				dir, _ := path.Split(r.URL.Path)
+				return dir
+			}(),
 		},
 		emptyValue: emptyValue,
 	}

middleware/rewrite/rewrite.go

@@ -3,9 +3,8 @@
 package rewrite
 
 import (
-	"net/http"
-
 	"fmt"
+	"net/http"
 	"net/url"
 	"path"
 	"path/filepath"
@@ -96,15 +95,6 @@ func NewRegexpRule(base, pattern, to string, ext []string) (*RegexpRule, error)
 	}, nil
 }
 
-// regexpVars are variables that can be used for To (rewrite destination path).
-var regexpVars = []string{
-	"{path}",
-	"{query}",
-	"{file}",
-	"{dir}",
-	"{frag}",
-}
-
 // Rewrite rewrites the internal location of the current request.
 func (r *RegexpRule) Rewrite(req *http.Request) bool {
 	rPath := req.URL.Path
@@ -119,32 +109,19 @@ func (r *RegexpRule) Rewrite(req *http.Request) bool {
 		return false
 	}
 
+	// include trailing slash in regexp if present
+	start := len(r.Base)
+	if strings.HasSuffix(r.Base, "/") {
+		start -= 1
+	}
+
 	// validate regexp
-	if !r.MatchString(rPath[len(r.Base):]) {
+	if !r.MatchString(rPath[start:]) {
 		return false
 	}
 
-	to := r.To
-
-	// check variables
-	for _, v := range regexpVars {
-		if strings.Contains(r.To, v) {
-			switch v {
-			case "{path}":
-				to = strings.Replace(to, v, req.URL.Path[1:], -1)
-			case "{query}":
-				to = strings.Replace(to, v, req.URL.RawQuery, -1)
-			case "{frag}":
-				to = strings.Replace(to, v, req.URL.Fragment, -1)
-			case "{file}":
-				_, file := path.Split(req.URL.Path)
-				to = strings.Replace(to, v, file, -1)
-			case "{dir}":
-				dir, _ := path.Split(req.URL.Path)
-				to = path.Clean(strings.Replace(to, v, dir, -1))
-			}
-		}
-	}
+	// replace variables
+	to := path.Clean(middleware.NewReplacer(req, nil, "").Replace(r.To))
 
 	// validate resulting path
 	url, err := url.Parse(to)

middleware/rewrite/rewrite_test.go

@@ -28,7 +28,7 @@ func TestRewrite(t *testing.T) {
 		[]string{"/ab/", "ab", "/ab?type=html&{query}", ".html|"},
 		[]string{"/abc/", "ab", "/abc/{file}", ".html|"},
 		[]string{"/abcd/", "ab", "/a/{dir}/{file}", ".html|"},
-		[]string{"/abcde/", "ab", "/a#{frag}", ".html|"},
+		[]string{"/abcde/", "ab", "/a#{fragment}", ".html|"},
 		[]string{"/ab/", `.*\.jpg`, "/ajpg", ""},
 	}
 

server/virtualhost.go

@@ -20,7 +20,7 @@ type virtualHost struct {
 // on its config. This method should be called last before
 // ListenAndServe begins.
 func (vh *virtualHost) buildStack() error {
-	vh.fileServer = FileServer(http.Dir(vh.config.Root), []string{vh.config.ConfigFile})
+	vh.fileServer = middleware.FileServer(http.Dir(vh.config.Root), []string{vh.config.ConfigFile})
 
 	// TODO: We only compile middleware for the "/" scope.
 	// Partial support for multiple location contexts already