auth/auth-gui/src/main/java/org/onap/aaf/auth/gui/Display.java

   1 /**
   2  * ============LICENSE_START====================================================
   3  * org.onap.aaf
   4  * ===========================================================================
   5  * Copyright (c) 2018 AT&T Intellectual Property. All rights reserved.
   6  * ===========================================================================
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  * ============LICENSE_END====================================================
  19  *
  20  */
  21
  22 package org.onap.aaf.auth.gui;
  23
  24 import java.util.Enumeration;
  25
  26 import javax.servlet.http.HttpServletRequest;
  27 import javax.servlet.http.HttpServletResponse;
  28
  29 import org.onap.aaf.auth.env.AuthzTrans;
  30 import org.onap.aaf.auth.rserv.HttpCode;
  31 import org.onap.aaf.auth.rserv.HttpMethods;
  32 import org.onap.aaf.misc.env.Slot;
  33
  34 public class Display {
  35     private final Page get;
  36     public Display(final AAF_GUI gui, final HttpMethods meth, final Page page) {
  37         get = page;
  38         final String[] fields = page.fields();
  39         final Slot slots[] = new Slot[fields.length];
  40         String prefix = page.name() + '.';
  41         for (int i=0;i<slots.length;++i) {
  42             slots[i] = gui.env.slot(prefix + fields[i]);
  43         }
  44
  45         /*
  46          * We handle all the "Form POST" calls here with a naming convention that allows us to create arrays from strings.
  47          *
  48          * On the HTTP side, elements concatenate their name with their Index number (if multiple).  In this code,
  49          * we turn such names into arrays with same index number.  Then, we place them in the Transaction "Properties" so that
  50          * it can be transferred to subclasses easily.
  51          */
  52         if (meth.equals(HttpMethods.POST)) {
  53             // Here, we'll expect FORM URL Encoded Data, which we need to get from the body
  54             gui.route(gui.env, meth, page.url(),
  55                 new HttpCode<AuthzTrans,AAF_GUI>(gui,page.name()) {
  56                     @Override
  57                     public void handle(AuthzTrans trans, HttpServletRequest req, HttpServletResponse resp) throws Exception {
  58                         trans.put(gui.slot_httpServletRequest, req);
  59                         for (int i=0; i<fields.length;++i) {
  60                             int idx = fields[i].indexOf("[]");
  61                             if (idx<0) { // single value
  62                                 trans.put(slots[i], req.getParameter(fields[i])); // assume first value
  63                             } else { // multi value - Expect Values to be set with Field root name "field.<int>" corresponding to an array of types
  64                                 String field=fields[i].substring(0, idx)+'.';
  65                                 String[] array = new String[16];
  66                                 for (Enumeration<String> names = req.getParameterNames(); names.hasMoreElements();) {
  67                                     String key = names.nextElement();
  68                                     if (key.startsWith(field)) {
  69                                         try {
  70                                             int x = Integer.parseInt(key.substring(field.length()));
  71                                             if (x>=array.length) {
  72                                                 String[] temp = new String[x+10];
  73                                                 System.arraycopy(temp, 0, temp, 0, array.length);
  74                                                 array = temp;
  75                                             }
  76                                             array[x]=req.getParameter(key);
  77                                         } catch (NumberFormatException e) {
  78                                             trans.debug().log(e);
  79                                         }
  80                                     }
  81                                 }
  82                                 trans.put(slots[i], array);
  83                             }
  84                         }
  85                         page.replay(context,trans,resp.getOutputStream(),"general");
  86                     }
  87                 }, "application/x-www-form-urlencoded","*/*");
  88
  89         } else {
  90             // Transfer whether Page shouldn't be cached to local Final var.
  91             final boolean no_cache = page.no_cache;
  92
  93             gui.route(gui.env, meth, page.url(),
  94                 new HttpCode<AuthzTrans,AAF_GUI>(gui,page.name()) {
  95                     @Override
  96                     public void handle(AuthzTrans trans, HttpServletRequest req, HttpServletResponse resp) throws Exception {
  97                         trans.put(gui.slot_httpServletRequest, req);
  98                         for (int i=0; i<slots.length;++i) {
  99                             int idx = fields[i].indexOf("[]");
 100                             if (idx<0) { // single value
 101                                 trans.put(slots[i], req.getParameter(fields[i]));
 102                             } else { // multi value
 103                                 String[] array = new String[30];
 104                                 String field=fields[i].substring(0, idx);
 105
 106                                 for (Enumeration<String> mm = req.getParameterNames();mm.hasMoreElements();) {
 107                                     String key = mm.nextElement();
 108                                     if (key.startsWith(field)) {
 109                                         try {
 110                                             int x = Integer.parseInt(key.substring(field.length()));
 111                                             if (x>=array.length) {
 112                                                 String[] temp = new String[x+10];
 113                                                 System.arraycopy(temp, 0, temp, 0, array.length);
 114                                                 array = temp;
 115                                             }
 116                                             array[x]=req.getParameter(key);
 117                                         } catch (NumberFormatException e) {
 118                                             trans.debug().log(e);
 119                                         }
 120                                     }
 121                                 }
 122                                 trans.put(slots[i], array);
 123                             }
 124                         }
 125                         page.replay(context,trans,resp.getOutputStream(),"general");
 126                     }
 127
 128                     @Override
 129                     public boolean no_cache() {
 130                         return no_cache;
 131                     }
 132                 }, "text/html","*/*");
 133         }
 134
 135     }
 136
 137     public Page page() {
 138         return get;
 139     }
 140 }