Ejemplo n.º 1
0
// Resolve the Accept-Language header value.
//
// The results are sorted using the quality defined in the header for each language range with the
// most qualified language range as the first element in the slice.
//
// See the HTTP header fields specification
// (http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.4) for more details.
func ResolveAcceptLanguage(req *http.Request) AcceptLanguages {
	header := req.Header.Get("Accept-Language")
	if header == "" {
		return nil
	}

	acceptLanguageHeaderValues := strings.Split(header, ",")
	acceptLanguages := make(AcceptLanguages, len(acceptLanguageHeaderValues))

	for i, languageRange := range acceptLanguageHeaderValues {
		if qualifiedRange := strings.Split(languageRange, ";q="); len(qualifiedRange) == 2 {
			quality, error := strconv.ParseFloat(qualifiedRange[1], 32)
			if error != nil {
				glog.Warningf("Detected malformed Accept-Language header quality in '%s', assuming quality is 1", languageRange)
				acceptLanguages[i] = AcceptLanguage{qualifiedRange[0], 1}
			} else {
				acceptLanguages[i] = AcceptLanguage{qualifiedRange[0], float32(quality)}
			}
		} else {
			acceptLanguages[i] = AcceptLanguage{languageRange, 1}
		}
	}

	sort.Sort(acceptLanguages)
	return acceptLanguages
}
Ejemplo n.º 2
0
// Perform a message look-up for the given locale and message using the given arguments.
//
// When either an unknown locale or message is detected, a specially formatted string is returned.
func Message(locale, message string, args ...interface{}) string {
	language, region := parseLocale(locale)
	glog.V(1).Infof("Resolving message '%s' for language '%s' and region '%s'", message, language, region)

	var value string
	var err error
	messageConfig, knownLanguage := messages[language]
	if knownLanguage {
		// This works because unlike the goconfig documentation suggests it will actually
		// try to resolve message in DEFAULT if it did not find it in the given section.
		value, err = messageConfig.String(region, message)
		if err != nil {
			glog.V(1).Infof("Unknown message '%s' for locale '%s', trying default language", message, locale)
			// Continue to try default language
		}
	} else {
		glog.V(1).Infof("Unsupported language for locale '%s' and message '%s', trying default language", locale, message)
	}

	if value == "" {
		if defaultLanguage, found := Config.String(defaultLanguageOption); found {
			glog.V(1).Infof("Using default language '%s'", defaultLanguage)

			messageConfig, knownLanguage = messages[defaultLanguage]
			if !knownLanguage {
				glog.Warningf("Unsupported default language for locale '%s' and message '%s'", defaultLanguage, message)
				return fmt.Sprintf(unknownValueFormat, message)
			}

			value, err = messageConfig.String(region, message)
			if err != nil {
				glog.Warningf("Unknown message '%s' for default locale '%s'", message, locale)
				return fmt.Sprintf(unknownValueFormat, message)
			}
		} else {
			glog.Warningf("Unable to find default language option (%s); messages for unsupported locales will never be translated", defaultLanguageOption)
			return fmt.Sprintf(unknownValueFormat, message)
		}
	}

	if len(args) > 0 {
		glog.V(1).Infof("Arguments detected, formatting '%s' with %v", value, args)
		value = fmt.Sprintf(value, args...)
	}

	return value
}
Ejemplo n.º 3
0
// This method handles requests for files. The supplied prefix may be absolute
// or relative. If the prefix is relative it is assumed to be relative to the
// application directory. The filepath may either be just a file or an
// additional filepath to search for the given file. This response may return
// the following responses in the event of an error or invalid request;
//   403(Forbidden): If the prefix filepath combination results in a directory.
//   404(Not found): If the prefix and filepath combination results in a non-existent file.
//   500(Internal Server Error): There are a few edge cases that would likely indicate some configuration error outside of revel.
//
// Note that when defining routes in routes/conf the parameters must not have
// spaces around the comma.
//   Bad:  Static.Serve("public/img", "favicon.png")
//   Good: Static.Serve("public/img","favicon.png")
//
// Examples:
// Serving a directory
//   Route (conf/routes):
//     GET /public/{<.*>filepath} Static.Serve("public")
//   Request:
//     public/js/sessvars.js
//   Calls
//     Static.Serve("public","js/sessvars.js")
//
// Serving a file
//   Route (conf/routes):
//     GET /favicon.ico Static.Serve("public/img","favicon.png")
//   Request:
//     favicon.ico
//   Calls:
//     Static.Serve("public/img", "favicon.png")
func (c Static) Serve(prefix, filepath string) revel.Result {
	// Fix for #503.
	prefix = c.Params.Fixed.Get("prefix")
	if prefix == "" {
		return c.NotFound("")
	}

	var basePath string
	if !fpath.IsAbs(prefix) {
		basePath = revel.BasePath
	}

	basePathPrefix := fpath.Join(basePath, fpath.FromSlash(prefix))
	fname := fpath.Join(basePathPrefix, fpath.FromSlash(filepath))
	if !strings.HasPrefix(fname, basePathPrefix) {
		glog.Warningf("Attempted to read file outside of base path: %s", fname)
		return c.NotFound("")
	}

	finfo, err := os.Stat(fname)
	if err != nil {
		if os.IsNotExist(err) {
			glog.Warningf("File not found (%s): %s ", fname, err)
			return c.NotFound("File not found")
		}
		glog.Errorf("Error trying to get fileinfo for '%s': %s", fname, err)
		return c.RenderError(err)
	}

	if finfo.Mode().IsDir() {
		glog.Warningf("Attempted directory listing of %s", fname)
		return c.Forbidden("Directory listing not allowed")
	}

	file, err := os.Open(fname)
	return c.RenderFile(file, revel.Inline)
}
Ejemplo n.º 4
0
func (c Static) Serve(prefix, filepath string) Result {
	var basePath, dirName string

	if !path.IsAbs(dirName) {
		basePath = BasePath
	}

	fname := path.Join(basePath, prefix, filepath)
	file, err := os.Open(fname)
	if os.IsNotExist(err) {
		return c.NotFound("")
	} else if err != nil {
		glog.Warningf("Problem opening file (%s): %s ", fname, err)
		return c.NotFound("This was found but not sure why we couldn't open it.")
	}
	return c.RenderFile(file, "")
}