diff options
author | 2017-09-04 15:00:54 +0800 | |
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committer | 2017-09-04 15:06:21 +0800 | |
commit | 43dac0bc4302fed79eaeb661723ca584a9c0496a (patch) | |
tree | a78f60300d73f0a69ed12e946d3fe4580455d8ba /kube2msb/src/vendor/github.com/emicklei/go-restful/cors_filter.go | |
parent | a7837a0ac51704003c6aacba2dacb8e64f681622 (diff) |
restructure the source directory
Issue-ID: OOM-61
Change-Id: Ib6f633d517ad197bfdbca59b374cdad2f1ed897e
Signed-off-by: HuabingZhao <zhao.huabing@zte.com.cn>
Diffstat (limited to 'kube2msb/src/vendor/github.com/emicklei/go-restful/cors_filter.go')
-rw-r--r-- | kube2msb/src/vendor/github.com/emicklei/go-restful/cors_filter.go | 202 |
1 files changed, 0 insertions, 202 deletions
diff --git a/kube2msb/src/vendor/github.com/emicklei/go-restful/cors_filter.go b/kube2msb/src/vendor/github.com/emicklei/go-restful/cors_filter.go deleted file mode 100644 index 1efeef0..0000000 --- a/kube2msb/src/vendor/github.com/emicklei/go-restful/cors_filter.go +++ /dev/null @@ -1,202 +0,0 @@ -package restful - -// Copyright 2013 Ernest Micklei. All rights reserved. -// Use of this source code is governed by a license -// that can be found in the LICENSE file. - -import ( - "regexp" - "strconv" - "strings" -) - -// CrossOriginResourceSharing is used to create a Container Filter that implements CORS. -// Cross-origin resource sharing (CORS) is a mechanism that allows JavaScript on a web page -// to make XMLHttpRequests to another domain, not the domain the JavaScript originated from. -// -// http://en.wikipedia.org/wiki/Cross-origin_resource_sharing -// http://enable-cors.org/server.html -// http://www.html5rocks.com/en/tutorials/cors/#toc-handling-a-not-so-simple-request -type CrossOriginResourceSharing struct { - ExposeHeaders []string // list of Header names - AllowedHeaders []string // list of Header names - AllowedDomains []string // list of allowed values for Http Origin. An allowed value can be a regular expression to support subdomain matching. If empty all are allowed. - AllowedMethods []string - MaxAge int // number of seconds before requiring new Options request - CookiesAllowed bool - Container *Container - - allowedOriginPatterns []*regexp.Regexp // internal field for origin regexp check. -} - -// Filter is a filter function that implements the CORS flow as documented on http://enable-cors.org/server.html -// and http://www.html5rocks.com/static/images/cors_server_flowchart.png -func (c CrossOriginResourceSharing) Filter(req *Request, resp *Response, chain *FilterChain) { - origin := req.Request.Header.Get(HEADER_Origin) - if len(origin) == 0 { - if trace { - traceLogger.Print("no Http header Origin set") - } - chain.ProcessFilter(req, resp) - return - } - if !c.isOriginAllowed(origin) { // check whether this origin is allowed - if trace { - traceLogger.Printf("HTTP Origin:%s is not part of %v, neither matches any part of %v", origin, c.AllowedDomains, c.allowedOriginPatterns) - } - chain.ProcessFilter(req, resp) - return - } - if req.Request.Method != "OPTIONS" { - c.doActualRequest(req, resp) - chain.ProcessFilter(req, resp) - return - } - if acrm := req.Request.Header.Get(HEADER_AccessControlRequestMethod); acrm != "" { - c.doPreflightRequest(req, resp) - } else { - c.doActualRequest(req, resp) - chain.ProcessFilter(req, resp) - return - } -} - -func (c CrossOriginResourceSharing) doActualRequest(req *Request, resp *Response) { - c.setOptionsHeaders(req, resp) - // continue processing the response -} - -func (c *CrossOriginResourceSharing) doPreflightRequest(req *Request, resp *Response) { - if len(c.AllowedMethods) == 0 { - if c.Container == nil { - c.AllowedMethods = DefaultContainer.computeAllowedMethods(req) - } else { - c.AllowedMethods = c.Container.computeAllowedMethods(req) - } - } - - acrm := req.Request.Header.Get(HEADER_AccessControlRequestMethod) - if !c.isValidAccessControlRequestMethod(acrm, c.AllowedMethods) { - if trace { - traceLogger.Printf("Http header %s:%s is not in %v", - HEADER_AccessControlRequestMethod, - acrm, - c.AllowedMethods) - } - return - } - acrhs := req.Request.Header.Get(HEADER_AccessControlRequestHeaders) - if len(acrhs) > 0 { - for _, each := range strings.Split(acrhs, ",") { - if !c.isValidAccessControlRequestHeader(strings.Trim(each, " ")) { - if trace { - traceLogger.Printf("Http header %s:%s is not in %v", - HEADER_AccessControlRequestHeaders, - acrhs, - c.AllowedHeaders) - } - return - } - } - } - resp.AddHeader(HEADER_AccessControlAllowMethods, strings.Join(c.AllowedMethods, ",")) - resp.AddHeader(HEADER_AccessControlAllowHeaders, acrhs) - c.setOptionsHeaders(req, resp) - - // return http 200 response, no body -} - -func (c CrossOriginResourceSharing) setOptionsHeaders(req *Request, resp *Response) { - c.checkAndSetExposeHeaders(resp) - c.setAllowOriginHeader(req, resp) - c.checkAndSetAllowCredentials(resp) - if c.MaxAge > 0 { - resp.AddHeader(HEADER_AccessControlMaxAge, strconv.Itoa(c.MaxAge)) - } -} - -func (c CrossOriginResourceSharing) isOriginAllowed(origin string) bool { - if len(origin) == 0 { - return false - } - if len(c.AllowedDomains) == 0 { - return true - } - - allowed := false - for _, domain := range c.AllowedDomains { - if domain == origin { - allowed = true - break - } - } - - if !allowed { - if len(c.allowedOriginPatterns) == 0 { - // compile allowed domains to allowed origin patterns - allowedOriginRegexps, err := compileRegexps(c.AllowedDomains) - if err != nil { - return false - } - c.allowedOriginPatterns = allowedOriginRegexps - } - - for _, pattern := range c.allowedOriginPatterns { - if allowed = pattern.MatchString(origin); allowed { - break - } - } - } - - return allowed -} - -func (c CrossOriginResourceSharing) setAllowOriginHeader(req *Request, resp *Response) { - origin := req.Request.Header.Get(HEADER_Origin) - if c.isOriginAllowed(origin) { - resp.AddHeader(HEADER_AccessControlAllowOrigin, origin) - } -} - -func (c CrossOriginResourceSharing) checkAndSetExposeHeaders(resp *Response) { - if len(c.ExposeHeaders) > 0 { - resp.AddHeader(HEADER_AccessControlExposeHeaders, strings.Join(c.ExposeHeaders, ",")) - } -} - -func (c CrossOriginResourceSharing) checkAndSetAllowCredentials(resp *Response) { - if c.CookiesAllowed { - resp.AddHeader(HEADER_AccessControlAllowCredentials, "true") - } -} - -func (c CrossOriginResourceSharing) isValidAccessControlRequestMethod(method string, allowedMethods []string) bool { - for _, each := range allowedMethods { - if each == method { - return true - } - } - return false -} - -func (c CrossOriginResourceSharing) isValidAccessControlRequestHeader(header string) bool { - for _, each := range c.AllowedHeaders { - if strings.ToLower(each) == strings.ToLower(header) { - return true - } - } - return false -} - -// Take a list of strings and compile them into a list of regular expressions. -func compileRegexps(regexpStrings []string) ([]*regexp.Regexp, error) { - regexps := []*regexp.Regexp{} - for _, regexpStr := range regexpStrings { - r, err := regexp.Compile(regexpStr) - if err != nil { - return regexps, err - } - regexps = append(regexps, r) - } - return regexps, nil -} |