delete session
This commit is contained in:
lealife
@ -7,7 +7,9 @@ services:
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install:
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- export PATH=$PATH:$HOME/gopath/bin
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- go get -v github.com/leanote/leanote/app
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- go get github.com/revel/cmd/revel
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- go get -u github.com/revel/cmd/revel
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ls $GOPATH/github.com/revel/
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# - go get github.com/revel/moudle/revel
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# - go install github.com/revel/cmd/revel
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- pwd
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- ls
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@ -1,38 +0,0 @@
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package session
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import (
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"github.com/revel/revel"
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"github.com/leanote/leanote/app/lea/memcache"
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. "github.com/leanote/leanote/app/lea"
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)
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// 使用filter
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// 很巧妙就使用了memcache来处理session
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// revel的session(cookie)只存sessionId, 其它信息存在memcache中
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func MSessionFilter(c *revel.Controller, fc []revel.Filter) {
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sessionId := c.Session.Id()
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// 从memcache中得到cache, 赋给session
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cache := revel.Session(memcache.GetMap(sessionId))
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Log("memcache")
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LogJ(cache)
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if cache == nil {
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cache = revel.Session{}
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cache.Id()
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}
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c.Session = cache
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// Make session vars available in templates as {{.session.xyz}}
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c.RenderArgs["session"] = c.Session
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fc[0](c, fc[1:])
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// 再把session保存之
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LogJ(c.Session)
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memcache.SetMap(sessionId, c.Session, -1)
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// 只留下sessionId
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c.Session = revel.Session{revel.SESSION_ID_KEY: sessionId}
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}
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@ -1,208 +0,0 @@
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package session
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import (
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"github.com/revel/revel"
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// . "github.com/leanote/leanote/app/lea"
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"crypto/rand"
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"encoding/hex"
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"fmt"
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"net/http"
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"net/url"
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"strconv"
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"strings"
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"time"
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)
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// 主要修改revel的cookie, 设置Domain
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// 为了使sub domain共享cookie
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// cookie.domain = leanote.com
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// A signed cookie (and thus limited to 4kb in size).
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// Restriction: Keys may not have a colon in them.
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type Session map[string]string
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const (
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SESSION_ID_KEY = "_ID"
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TIMESTAMP_KEY = "_TS"
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)
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// expireAfterDuration is the time to live, in seconds, of a session cookie.
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// It may be specified in config as "session.expires". Values greater than 0
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// set a persistent cookie with a time to live as specified, and the value 0
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// sets a session cookie.
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var expireAfterDuration time.Duration
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var cookieDomain = "" // life
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func init() {
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// Set expireAfterDuration, default to 30 days if no value in config
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revel.OnAppStart(func() {
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var err error
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if expiresString, ok := revel.Config.String("session.expires"); !ok {
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expireAfterDuration = 30 * 24 * time.Hour
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} else if expiresString == "session" {
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expireAfterDuration = 0
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} else if expireAfterDuration, err = time.ParseDuration(expiresString); err != nil {
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panic(fmt.Errorf("session.expires invalid: %s", err))
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}
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cookieDomain, _ = revel.Config.String("cookie.domain")
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})
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}
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// Id retrieves from the cookie or creates a time-based UUID identifying this
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// session.
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func (s Session) Id() string {
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if sessionIdStr, ok := s[SESSION_ID_KEY]; ok {
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return sessionIdStr
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}
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buffer := make([]byte, 32)
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if _, err := rand.Read(buffer); err != nil {
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panic(err)
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}
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s[SESSION_ID_KEY] = hex.EncodeToString(buffer)
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return s[SESSION_ID_KEY]
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}
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// getExpiration return a time.Time with the session's expiration date.
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// If previous session has set to "session", remain it
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func (s Session) getExpiration() time.Time {
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if expireAfterDuration == 0 || s[TIMESTAMP_KEY] == "session" {
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// Expire after closing browser
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return time.Time{}
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}
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return time.Now().Add(expireAfterDuration)
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}
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// cookie returns an http.Cookie containing the signed session.
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func (s Session) cookie() *http.Cookie {
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var sessionValue string
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ts := s.getExpiration()
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s[TIMESTAMP_KEY] = getSessionExpirationCookie(ts)
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for key, value := range s {
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if strings.ContainsAny(key, ":\x00") {
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panic("Session keys may not have colons or null bytes")
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}
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if strings.Contains(value, "\x00") {
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panic("Session values may not have null bytes")
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}
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sessionValue += "\x00" + key + ":" + value + "\x00"
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}
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sessionData := url.QueryEscape(sessionValue)
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cookie := http.Cookie{
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Name: revel.CookiePrefix + "_SESSION",
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Value: revel.Sign(sessionData) + "-" + sessionData,
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Path: "/",
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HttpOnly: revel.CookieHttpOnly,
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Secure: revel.CookieSecure,
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Expires: ts.UTC(),
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}
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if cookieDomain != "" {
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cookie.Domain = cookieDomain
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}
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return &cookie
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}
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// sessionTimeoutExpiredOrMissing returns a boolean of whether the session
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// cookie is either not present or present but beyond its time to live; i.e.,
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// whether there is not a valid session.
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func sessionTimeoutExpiredOrMissing(session Session) bool {
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if exp, present := session[TIMESTAMP_KEY]; !present {
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return true
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} else if exp == "session" {
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return false
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} else if expInt, _ := strconv.Atoi(exp); int64(expInt) < time.Now().Unix() {
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return true
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}
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return false
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}
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// getSessionFromCookie returns a Session struct pulled from the signed
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// session cookie.
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func getSessionFromCookie(cookie *http.Cookie) Session {
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session := make(Session)
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// Separate the data from the signature.
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hyphen := strings.Index(cookie.Value, "-")
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if hyphen == -1 || hyphen >= len(cookie.Value)-1 {
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return session
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}
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sig, data := cookie.Value[:hyphen], cookie.Value[hyphen+1:]
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// Verify the signature.
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if !revel.Verify(data, sig) {
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revel.INFO.Println("Session cookie signature failed")
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return session
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}
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revel.ParseKeyValueCookie(data, func(key, val string) {
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session[key] = val
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})
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if sessionTimeoutExpiredOrMissing(session) {
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session = make(Session)
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}
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return session
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}
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// SessionFilter is a Revel Filter that retrieves and sets the session cookie.
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// Within Revel, it is available as a Session attribute on Controller instances.
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// The name of the Session cookie is set as CookiePrefix + "_SESSION".
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func SessionFilter(c *revel.Controller, fc []revel.Filter) {
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session := restoreSession(c.Request.Request)
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// c.Session, 重新生成一个revel.Session给controller!!!
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// Log("sessoin--------")
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// LogJ(session)
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revelSession := revel.Session(session) // 强制转换 还是同一个对象, 但有个问题, 这样Session.Id()方法是用revel的了
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c.Session = revelSession
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// 生成sessionId
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c.Session.Id()
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sessionWasEmpty := len(c.Session) == 0
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// Make session vars available in templates as {{.session.xyz}}
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c.RenderArgs["session"] = c.Session
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fc[0](c, fc[1:])
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// Store the signed session if it could have changed.
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if len(c.Session) > 0 || !sessionWasEmpty {
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// 转换成lea.Session
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session = Session(c.Session)
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c.SetCookie(session.cookie())
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}
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}
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// restoreSession returns either the current session, retrieved from the
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// session cookie, or a new session.
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func restoreSession(req *http.Request) Session {
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cookie, err := req.Cookie(revel.CookiePrefix + "_SESSION")
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if err != nil {
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return make(Session)
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} else {
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return getSessionFromCookie(cookie)
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}
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}
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// getSessionExpirationCookie retrieves the cookie's time to live as a
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// string of either the number of seconds, for a persistent cookie, or
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// "session".
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func getSessionExpirationCookie(t time.Time) string {
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if t.IsZero() {
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return "session"
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}
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return strconv.FormatInt(t.Unix(), 10)
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}
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// SetNoExpiration sets session to expire when browser session ends
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func (s Session) SetNoExpiration() {
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s[TIMESTAMP_KEY] = "session"
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}
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// SetDefaultExpiration sets session to expire after default duration
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func (s Session) SetDefaultExpiration() {
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delete(s, TIMESTAMP_KEY)
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}
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