mirror of
https://github.com/astaxie/beego.git
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528 lines
14 KiB
Go
528 lines
14 KiB
Go
// Beego (http://beego.me/)
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// @description beego is an open-source, high-performance web framework for the Go programming language.
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// @link http://github.com/astaxie/beego for the canonical source repository
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// @license http://github.com/astaxie/beego/blob/master/LICENSE
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// @authors astaxie
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package context
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import (
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"bytes"
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"errors"
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"io/ioutil"
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"net/http"
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"net/url"
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"reflect"
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"strconv"
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"strings"
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"github.com/astaxie/beego/session"
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)
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// BeegoInput operates the http request header ,data ,cookie and body.
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// it also contains router params and current session.
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type BeegoInput struct {
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CruSession session.SessionStore
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Params map[string]string
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Data map[interface{}]interface{} // store some values in this context when calling context in filter or controller.
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Request *http.Request
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RequestBody []byte
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RunController reflect.Type
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RunMethod string
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}
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// NewInput return BeegoInput generated by http.Request.
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func NewInput(req *http.Request) *BeegoInput {
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return &BeegoInput{
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Params: make(map[string]string),
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Data: make(map[interface{}]interface{}),
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Request: req,
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}
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}
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// Protocol returns request protocol name, such as HTTP/1.1 .
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func (input *BeegoInput) Protocol() string {
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return input.Request.Proto
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}
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// Uri returns full request url with query string, fragment.
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func (input *BeegoInput) Uri() string {
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return input.Request.RequestURI
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}
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// Url returns request url path (without query string, fragment).
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func (input *BeegoInput) Url() string {
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return input.Request.URL.String()
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}
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// Site returns base site url as scheme://domain type.
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func (input *BeegoInput) Site() string {
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return input.Scheme() + "://" + input.Domain()
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}
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// Scheme returns request scheme as "http" or "https".
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func (input *BeegoInput) Scheme() string {
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if input.Request.URL.Scheme != "" {
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return input.Request.URL.Scheme
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} else if input.Request.TLS == nil {
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return "http"
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} else {
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return "https"
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}
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}
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// Domain returns host name.
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// Alias of Host method.
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func (input *BeegoInput) Domain() string {
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return input.Host()
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}
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// Host returns host name.
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// if no host info in request, return localhost.
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func (input *BeegoInput) Host() string {
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if input.Request.Host != "" {
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hostParts := strings.Split(input.Request.Host, ":")
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if len(hostParts) > 0 {
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return hostParts[0]
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}
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return input.Request.Host
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}
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return "localhost"
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}
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// Method returns http request method.
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func (input *BeegoInput) Method() string {
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return input.Request.Method
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}
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// Is returns boolean of this request is on given method, such as Is("POST").
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func (input *BeegoInput) Is(method string) bool {
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return input.Method() == method
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}
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// Is this a GET method request?
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func (input *BeegoInput) IsGet() bool {
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return input.Is("GET")
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}
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// Is this a POST method request?
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func (input *BeegoInput) IsPost() bool {
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return input.Is("POST")
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}
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// Is this a Head method request?
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func (input *BeegoInput) IsHead() bool {
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return input.Is("HEAD")
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}
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// Is this a OPTIONS method request?
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func (input *BeegoInput) IsOptions() bool {
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return input.Is("OPTIONS")
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}
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// Is this a PUT method request?
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func (input *BeegoInput) IsPut() bool {
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return input.Is("PUT")
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}
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// Is this a DELETE method request?
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func (input *BeegoInput) IsDelete() bool {
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return input.Is("DELETE")
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}
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// Is this a PATCH method request?
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func (input *BeegoInput) IsPatch() bool {
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return input.Is("PATCH")
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}
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// IsAjax returns boolean of this request is generated by ajax.
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func (input *BeegoInput) IsAjax() bool {
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return input.Header("X-Requested-With") == "XMLHttpRequest"
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}
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// IsSecure returns boolean of this request is in https.
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func (input *BeegoInput) IsSecure() bool {
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return input.Scheme() == "https"
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}
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// IsSecure returns boolean of this request is in webSocket.
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func (input *BeegoInput) IsWebsocket() bool {
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return input.Header("Upgrade") == "websocket"
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}
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// IsSecure returns boolean of whether file uploads in this request or not..
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func (input *BeegoInput) IsUpload() bool {
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return strings.Contains(input.Header("Content-Type"), "multipart/form-data")
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}
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// IP returns request client ip.
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// if in proxy, return first proxy id.
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// if error, return 127.0.0.1.
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func (input *BeegoInput) IP() string {
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ips := input.Proxy()
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if len(ips) > 0 && ips[0] != "" {
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rip := strings.Split(ips[0], ":")
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return rip[0]
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}
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ip := strings.Split(input.Request.RemoteAddr, ":")
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if len(ip) > 0 {
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if ip[0] != "[" {
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return ip[0]
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}
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}
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return "127.0.0.1"
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}
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// Proxy returns proxy client ips slice.
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func (input *BeegoInput) Proxy() []string {
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if ips := input.Header("X-Forwarded-For"); ips != "" {
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return strings.Split(ips, ",")
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}
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return []string{}
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}
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// Refer returns http referer header.
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func (input *BeegoInput) Refer() string {
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return input.Header("Referer")
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}
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// SubDomains returns sub domain string.
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// if aa.bb.domain.com, returns aa.bb .
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func (input *BeegoInput) SubDomains() string {
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parts := strings.Split(input.Host(), ".")
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return strings.Join(parts[len(parts)-2:], ".")
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}
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// Port returns request client port.
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// when error or empty, return 80.
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func (input *BeegoInput) Port() int {
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parts := strings.Split(input.Request.Host, ":")
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if len(parts) == 2 {
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port, _ := strconv.Atoi(parts[1])
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return port
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}
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return 80
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}
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// UserAgent returns request client user agent string.
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func (input *BeegoInput) UserAgent() string {
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return input.Header("User-Agent")
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}
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// Param returns router param by a given key.
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func (input *BeegoInput) Param(key string) string {
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if v, ok := input.Params[key]; ok {
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return v
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}
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return ""
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}
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// Query returns input data item string by a given string.
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func (input *BeegoInput) Query(key string) string {
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if val := input.Param(key); val != "" {
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return val
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}
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if input.Request.Form == nil {
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input.Request.ParseForm()
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}
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return input.Request.Form.Get(key)
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}
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// Header returns request header item string by a given string.
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func (input *BeegoInput) Header(key string) string {
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return input.Request.Header.Get(key)
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}
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// Cookie returns request cookie item string by a given key.
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// if non-existed, return empty string.
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func (input *BeegoInput) Cookie(key string) string {
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ck, err := input.Request.Cookie(key)
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if err != nil {
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return ""
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}
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return ck.Value
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}
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// Session returns current session item value by a given key.
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func (input *BeegoInput) Session(key interface{}) interface{} {
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return input.CruSession.Get(key)
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}
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// Body returns the raw request body data as bytes.
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func (input *BeegoInput) CopyBody() []byte {
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requestbody, _ := ioutil.ReadAll(input.Request.Body)
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input.Request.Body.Close()
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bf := bytes.NewBuffer(requestbody)
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input.Request.Body = ioutil.NopCloser(bf)
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input.RequestBody = requestbody
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return requestbody
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}
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// GetData returns the stored data in this context.
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func (input *BeegoInput) GetData(key interface{}) interface{} {
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if v, ok := input.Data[key]; ok {
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return v
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}
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return nil
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}
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// SetData stores data with given key in this context.
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// This data are only available in this context.
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func (input *BeegoInput) SetData(key, val interface{}) {
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input.Data[key] = val
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}
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// parseForm or parseMultiForm based on Content-type
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func (input *BeegoInput) ParseFormOrMulitForm(maxMemory int64) error {
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// Parse the body depending on the content type.
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if strings.Contains(input.Header("Content-Type"), "multipart/form-data") {
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if err := input.Request.ParseMultipartForm(maxMemory); err != nil {
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return errors.New("Error parsing request body:" + err.Error())
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}
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} else if err := input.Request.ParseForm(); err != nil {
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return errors.New("Error parsing request body:" + err.Error())
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}
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return nil
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}
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// Bind data from request.Form[key] to dest
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// like /?id=123&isok=true&ft=1.2&ol[0]=1&ol[1]=2&ul[]=str&ul[]=array&user.Name=astaxie
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// var id int beegoInput.Bind(&id, "id") id ==123
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// var isok bool beegoInput.Bind(&isok, "isok") id ==true
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// var ft float64 beegoInput.Bind(&ft, "ft") ft ==1.2
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// ol := make([]int, 0, 2) beegoInput.Bind(&ol, "ol") ol ==[1 2]
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// ul := make([]string, 0, 2) beegoInput.Bind(&ul, "ul") ul ==[str array]
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// user struct{Name} beegoInput.Bind(&user, "user") user == {Name:"astaxie"}
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func (input *BeegoInput) Bind(dest interface{}, key string) error {
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value := reflect.ValueOf(dest)
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if value.Kind() != reflect.Ptr {
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return errors.New("beego: non-pointer passed to Bind: " + key)
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}
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value = value.Elem()
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if !value.CanSet() {
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return errors.New("beego: non-settable variable passed to Bind: " + key)
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}
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rv := input.bind(key, value.Type())
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if !rv.IsValid() {
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return errors.New("beego: reflect value is empty")
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}
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value.Set(rv)
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return nil
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}
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func (input *BeegoInput) bind(key string, typ reflect.Type) reflect.Value {
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rv := reflect.Zero(reflect.TypeOf(0))
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switch typ.Kind() {
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case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
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val := input.Query(key)
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if len(val) == 0 {
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return rv
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}
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rv = input.bindInt(val, typ)
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case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
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val := input.Query(key)
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if len(val) == 0 {
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return rv
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}
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rv = input.bindUint(val, typ)
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case reflect.Float32, reflect.Float64:
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val := input.Query(key)
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if len(val) == 0 {
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return rv
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}
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rv = input.bindFloat(val, typ)
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case reflect.String:
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val := input.Query(key)
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if len(val) == 0 {
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return rv
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}
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rv = input.bindString(val, typ)
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case reflect.Bool:
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val := input.Query(key)
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if len(val) == 0 {
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return rv
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}
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rv = input.bindBool(val, typ)
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case reflect.Slice:
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rv = input.bindSlice(&input.Request.Form, key, typ)
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case reflect.Struct:
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rv = input.bindStruct(&input.Request.Form, key, typ)
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case reflect.Ptr:
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rv = input.bindPoint(key, typ)
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case reflect.Map:
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rv = input.bindMap(&input.Request.Form, key, typ)
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}
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return rv
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}
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func (input *BeegoInput) bindValue(val string, typ reflect.Type) reflect.Value {
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rv := reflect.Zero(reflect.TypeOf(0))
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switch typ.Kind() {
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case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
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rv = input.bindInt(val, typ)
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case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
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rv = input.bindUint(val, typ)
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case reflect.Float32, reflect.Float64:
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rv = input.bindFloat(val, typ)
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case reflect.String:
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rv = input.bindString(val, typ)
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case reflect.Bool:
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rv = input.bindBool(val, typ)
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case reflect.Slice:
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rv = input.bindSlice(&url.Values{"": {val}}, "", typ)
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case reflect.Struct:
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rv = input.bindStruct(&url.Values{"": {val}}, "", typ)
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case reflect.Ptr:
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rv = input.bindPoint(val, typ)
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case reflect.Map:
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rv = input.bindMap(&url.Values{"": {val}}, "", typ)
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}
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return rv
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}
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func (input *BeegoInput) bindInt(val string, typ reflect.Type) reflect.Value {
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intValue, err := strconv.ParseInt(val, 10, 64)
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if err != nil {
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return reflect.Zero(typ)
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}
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pValue := reflect.New(typ)
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pValue.Elem().SetInt(intValue)
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return pValue.Elem()
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}
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func (input *BeegoInput) bindUint(val string, typ reflect.Type) reflect.Value {
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uintValue, err := strconv.ParseUint(val, 10, 64)
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if err != nil {
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return reflect.Zero(typ)
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}
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pValue := reflect.New(typ)
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pValue.Elem().SetUint(uintValue)
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return pValue.Elem()
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}
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func (input *BeegoInput) bindFloat(val string, typ reflect.Type) reflect.Value {
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floatValue, err := strconv.ParseFloat(val, 64)
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if err != nil {
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return reflect.Zero(typ)
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}
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pValue := reflect.New(typ)
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pValue.Elem().SetFloat(floatValue)
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return pValue.Elem()
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}
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func (input *BeegoInput) bindString(val string, typ reflect.Type) reflect.Value {
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return reflect.ValueOf(val)
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}
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func (input *BeegoInput) bindBool(val string, typ reflect.Type) reflect.Value {
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val = strings.TrimSpace(strings.ToLower(val))
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switch val {
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case "true", "on", "1":
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return reflect.ValueOf(true)
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}
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return reflect.ValueOf(false)
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}
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type sliceValue struct {
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index int // Index extracted from brackets. If -1, no index was provided.
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value reflect.Value // the bound value for this slice element.
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}
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func (input *BeegoInput) bindSlice(params *url.Values, key string, typ reflect.Type) reflect.Value {
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maxIndex := -1
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numNoIndex := 0
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sliceValues := []sliceValue{}
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for reqKey, vals := range *params {
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if !strings.HasPrefix(reqKey, key+"[") {
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continue
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}
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// Extract the index, and the index where a sub-key starts. (e.g. field[0].subkey)
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index := -1
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leftBracket, rightBracket := len(key), strings.Index(reqKey[len(key):], "]")+len(key)
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if rightBracket > leftBracket+1 {
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index, _ = strconv.Atoi(reqKey[leftBracket+1 : rightBracket])
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}
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subKeyIndex := rightBracket + 1
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// Handle the indexed case.
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if index > -1 {
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if index > maxIndex {
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maxIndex = index
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}
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sliceValues = append(sliceValues, sliceValue{
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index: index,
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value: input.bind(reqKey[:subKeyIndex], typ.Elem()),
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})
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continue
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}
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// It's an un-indexed element. (e.g. element[])
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numNoIndex += len(vals)
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for _, val := range vals {
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// Unindexed values can only be direct-bound.
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sliceValues = append(sliceValues, sliceValue{
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index: -1,
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value: input.bindValue(val, typ.Elem()),
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})
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}
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}
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resultArray := reflect.MakeSlice(typ, maxIndex+1, maxIndex+1+numNoIndex)
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for _, sv := range sliceValues {
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if sv.index != -1 {
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resultArray.Index(sv.index).Set(sv.value)
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} else {
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resultArray = reflect.Append(resultArray, sv.value)
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}
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}
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return resultArray
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}
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func (input *BeegoInput) bindStruct(params *url.Values, key string, typ reflect.Type) reflect.Value {
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result := reflect.New(typ).Elem()
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fieldValues := make(map[string]reflect.Value)
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for reqKey, val := range *params {
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if !strings.HasPrefix(reqKey, key+".") {
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continue
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}
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fieldName := reqKey[len(key)+1:]
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if _, ok := fieldValues[fieldName]; !ok {
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// Time to bind this field. Get it and make sure we can set it.
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fieldValue := result.FieldByName(fieldName)
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if !fieldValue.IsValid() {
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continue
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}
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if !fieldValue.CanSet() {
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continue
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}
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boundVal := input.bindValue(val[0], fieldValue.Type())
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fieldValue.Set(boundVal)
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fieldValues[fieldName] = boundVal
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}
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}
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return result
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}
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func (input *BeegoInput) bindPoint(key string, typ reflect.Type) reflect.Value {
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return input.bind(key, typ.Elem()).Addr()
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}
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func (input *BeegoInput) bindMap(params *url.Values, key string, typ reflect.Type) reflect.Value {
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var (
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result = reflect.MakeMap(typ)
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keyType = typ.Key()
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valueType = typ.Elem()
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)
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for paramName, values := range *params {
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if !strings.HasPrefix(paramName, key+"[") || paramName[len(paramName)-1] != ']' {
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continue
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}
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|
key := paramName[len(key)+1 : len(paramName)-1]
|
|
result.SetMapIndex(input.bindValue(key, keyType), input.bindValue(values[0], valueType))
|
|
}
|
|
return result
|
|
}
|