SDC LoginServer登錄源碼

// 創(chuàng)建 基于Jetty的 SdcHashLoginService服務(wù);
WebServerTask.getLoginService(Configuration conf, String mode){
    switch (loginModule) {
        case FILE:
                String realm = conf.get(DIGEST_REALM_KEY, mode + REALM_POSIX_DEFAULT);
                File realmFile = new File(runtimeInfo.getConfigDir(), realm + ".properties").getAbsoluteFile();
                validateRealmFile(realmFile);//拼接成 $SDC_HOME/etc/form-realm.properties文件路徑
                loginService = new SdcHashLoginService(realm, realmFile.getAbsolutePath());{//SdcHashLoginService的構(gòu)造函數(shù),是否可以在這里做文章;
                    super(name, config);{//new HashLoginService()
                        super()://創(chuàng)建父類AbstractLoginService的無參構(gòu)造函數(shù);
                        setName(name);
                        setConfig(config);
                    }
                }
                break;
    }
}

Jetty網(wǎng)站用戶登錄時,基于MD5的驗(yàn)證功能

SecurityHandler.handle(){
    if (authentication==null || authentication==Authentication.NOT_CHECKED)
        authentication=authenticator==null?Authentication.UNAUTHENTICATED:authenticator.validateRequest(request, response, isAuthMandatory);{//ActivationAuthenticator.validateRequest()
            Authentication authentication = authenticator.validateRequest(request, response, mandatory);{//ProxyAuthenticator.validateRequest()
                return authenticator.validateRequest(req, res, mandatory);{//FormAuthenticator.validateRequest()
                    mandatory|=isJSecurityCheck(uri);
                    if (isJSecurityCheck(uri)){
                        final String username = request.getParameter(__J_USERNAME);
                        final String password = request.getParameter(__J_PASSWORD);
                        UserIdentity user = login(username, password, request);{//FormAuthenticator.login
                            UserIdentity user = super.login(username,password,request);{//LoginAuthenticator.login()
                                UserIdentity user = _loginService.login(username,password, request);{//AbstractLoginService.login()
                                    if (username == null) return null;
                                    UserPrincipal userPrincipal = loadUserInfo(username);{//HashLoginService.loadUserInfo()
                                        UserIdentity id = _propertyUserStore.getUserIdentity(userName);
                                        if (id != null){
                                            return (UserPrincipal)id.getUserPrincipal();
                                        }
                                    }
                                    boolean canLogin = userPrincipal != null && userPrincipal.authenticate(credentials);{//AbstractLoginService.authenticate(Object credentials)
                                        return _credential!=null && _credential.check(credentials);{//Credential.$.MD5.check(credentials)
                                            byte[] digest = null;
                                            if (credentials instanceof char[])//若是字節(jié)數(shù)組,先轉(zhuǎn)換String;
                                                credentials = new String((char[])credentials);
                                            
                                            if (credentials instanceof Password || credentials instanceof String){//若為Password或字符串; 前端傳入即為字符串,進(jìn)入這里;
                                                synchronized (__md5Lock){
                                                    if (__md == null)//若_md為空,則新建一個MD5
                                                        __md = MessageDigest.getInstance("MD5");//若要獲取SHA加密算法,輸入"SHA"即可;
                                                    __md.reset();{MessageDigest.reset()//更新引擎,可能之前是其他算法引擎,如MD2,MD5,SHA等;
                                                        engineReset();
                                                        state = INITIAL;
                                                    }
                                                    
                                                    __md.update(credentials.toString().getBytes(StandardCharsets.ISO_8859_1));{//MessageDigest.update()
                                                        engineUpdate(input, 0, input.length);{//MessageDigest.$.Delegate.engineUpdate()
                                                            digestSpi.engineUpdate(input, offset, len);{//sun.security.MD5 -> 父類DigestBase.engineUpdate()
                                                                
                                                            }
                                                        }
                                                        state = IN_PROGRESS;
                                                    }
                                                    digest = __md.digest();{//MessageDigest.$Delegate.
                                                        return digestSpi.engineDigest();{//DigestBase.engineDigest()
                                                            this.engineDigest(var1, 0, var1.length);{//DigestBase.engineDigest()
                                                                else if (var2 >= 0 && var3 >= 0 && var2 <= var1.length - var3) {
                                                                    this.implDigest(var1, var2);{//由子類實(shí)現(xiàn): MD5.implDigest()
                                                                        MD5.implDigest();
                                                                    }
                                                                }
                                                            }
                                                        }
                                                    }
                                                }
                                                if (digest == null || digest.length != _digest.length)
                                                    return false;
                                                boolean digestMismatch = false;
                                                for (int i = 0; i < digest.length; i++)
                                                    digestMismatch |= (digest[i] != _digest[i]);
                                                return !digestMismatch;
                                            } else if (credentials instanceof MD5){
                                                return equals((MD5)credentials);
                                            } else if (credentials instanceof Credential){
                                                return ((Credential)credentials).check(this);
                                            } else {
                                                LOG.warn("Can't check " + credentials.getClass() + " against MD5");
                                                return false;
                                            }
                                        }
                                    }
                                    if (canLogin){
                                        String[] roles = loadRoleInfo(userPrincipal);
                                        return _identityService.newUserIdentity(subject,userPrincipal,roles);
                                    }
                                }
                            }
                            if (user!=null){
                                HttpSession session = ((HttpServletRequest)request).getSession(true);
                                Authentication cached=new SessionAuthentication(getAuthMethod(),user,password);
                            }
                        }
                        LOG.debug("jsecuritycheck {} {}",username,user);
                    }
                }
            }
        }

}