netwerk/testserver/ScriptFile.java

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  36  * ***** END LICENSE BLOCK ***** */
  37
  38 import java.io.*;
  39 import java.util.Date;
  40 import java.util.StringTokenizer;
  41 /*
  42         ScriptFile class reads off the script file and sets up the list
  43         of delimiters.
  44 */
  45
  46 class ScriptFile {
  47
  48     public static final String URLMAP = new String("docs/urlmap");
  49
  50         public ScriptFile(Connection c, String req, PrintWriter stream ) {
  51         con = c;
  52             request = req;
  53             out = stream;
  54             if (out == null)
  55                 out = new PrintWriter(System.out);
  56             file = URLMAP;
  57             try {
  58                 Parse();
  59             }
  60             catch (IOException e)
  61             {
  62                 out.println("HTTP/1.1 500 Server Error\n\n");
  63                 out.println("Failed with this exception-");
  64                 out.println(e);
  65             }
  66             out.flush();
  67         }
  68
  69         public ScriptFile(String f) {
  70                 file = f;
  71                 out = new PrintWriter(System.out);
  72             try {
  73                 Parse();
  74             }
  75             catch (FileNotFoundException e)
  76             {
  77                 out.println("HTTP/1.1 404 File Not Found\n\n");
  78                 out.println("File not found!");
  79                 out.println(e);
  80             }
  81             catch (IOException e)
  82             {
  83                 out.println("HTTP/1.1 500 Server Error\n\n");
  84                 out.println("Failed with this exception-");
  85                 out.println(e);
  86             }
  87             out.flush();
  88         }
  89
  90         public void Parse () throws IOException {
  91
  92             if ((request == null) ||
  93                         (request.length() == 0) ||
  94                         request.startsWith("GET / ") || request.startsWith("get / "))
  95             {
  96                 WriteDefaultResponse();
  97             return;
  98             }
  99
 100                 if (request.startsWith("GET /?") || request.startsWith("get /?"))
 101                 {
 102                         WriteSpecialResponse(request.substring(request.indexOf('?')+1));
 103                         return;
 104                 }
 105
 106         if (request.startsWith("HEAD /") || request.startsWith("head /"))
 107         {
 108             WriteHeadResponse();
 109             return;
 110         }
 111
 112         boolean outDirty = false;
 113             if (file != null)
 114             {
 115                           BufferedReader in = new BufferedReader(
 116                                 new InputStreamReader(
 117                                         new FileInputStream(file)));
 118
 119               String s = new String();
 120               while((s = in.readLine())!= null)
 121               {
 122                 s.trim();
 123                 /* Skip comments */
 124                 if ((s.length() == 0) || (s.charAt(0) == '#'))
 125                     continue;
 126                 if (s.startsWith("START")) {
 127                     // Check to see if this was in the requested URL
 128                     String filename = new String ("GET " + s.substring(6));
 129                     String otherfilename = new String("POST " + s.substring(6));
 130                     if (request.startsWith(filename) ||
 131                             request.startsWith(otherfilename))
 132                     {
 133                         continue;
 134                     }
 135                     else// Else skipto past the END
 136                     {
 137                         while (!s.startsWith("END"))
 138                         {
 139                             s = in.readLine();
 140                             if (s != null)
 141                             {
 142                                 s.trim();
 143                             }
 144                             else
 145                                 break;
 146                         }
 147                     }
 148                 }
 149                 else if (s.startsWith("ECHO")) {
 150                     outDirty = true;
 151                     boolean parameter = false;
 152                     try {
 153                         String header = new String(s.substring(5));
 154                         String req= new String(con.request);
 155                         int t = req.indexOf(header);
 156                         if (t != -1) {
 157                             out.println(req.substring(
 158                                 t, req.indexOf("\n", t)));
 159                             parameter = true;
 160                         }
 161                         else {
 162                             out.println("Error: " + header +
 163                                     " not specified in request!");
 164                         }
 165
 166                     }
 167                     catch (StringIndexOutOfBoundsException e) {}
 168                     if (!parameter)
 169                         out.println(con.request);
 170                 }
 171                 else if (s.startsWith("INCLUDE")) {
 172                     outDirty = true;
 173                     WriteOutFile("docs/" + s.substring(8));
 174                 }
 175                 else if (s.startsWith("CRLF")) {
 176                     outDirty = true;
 177                     out.println();
 178                 }
 179                 else if (s.startsWith("END")) {
 180                     // ignore should never have appeared here though!
 181                     continue;
 182                 }
 183                 else {// Not a recognizable line... just print it as is...
 184                     outDirty = true;
 185                     out.println(s);
 186                 }
 187
 188               }
 189               in.close();
 190
 191               if (outDirty)
 192               {
 193                 out.flush();
 194               }
 195               else
 196                 WriteDefaultResponse();
 197             }
 198         }
 199
 200         public static void main(String args[]) {
 201             if (args.length >= 1) {
 202             ScriptFile sf = new ScriptFile(args[0]);
 203             /* Detect change stuff;
 204             File f = new File(args[0]);
 205             long lastMod = f.lastModified();
 206             while (f.lastModified() == lastMod) {
 207             }
 208             sf.Parse();
 209             */
 210             }
 211         }
 212
 213     protected void WriteOutFile(String filename) throws IOException {
 214                   BufferedReader incl = new BufferedReader(
 215                         new InputStreamReader(
 216                new FileInputStream(filename)));
 217         // This doesn't have to be line wise... change later TODO
 218         String s;
 219         while ((s = incl.readLine()) != null)
 220         {
 221             out.println(s);
 222         }
 223         incl.close();
 224     }
 225
 226     protected void WriteDefaultResponse() throws IOException {
 227                 WriteOutFile("docs/generic.res");
 228         out.println("Date: " + (new Date()).toString());
 229         if (file != null)
 230         {
 231             File f = new File(file);
 232             out.println("Last-modified: " + (new Date(f.lastModified())).toString());
 233         }
 234         out.println("\n"); // prints 2
 235         if (con != null)
 236         {
 237                         out.println("<HTML><BODY>");
 238             out.println("<H3>Rec'd. the following request-</H3>");
 239             out.println("<PRE>");
 240             out.println(con.request);
 241             out.println("</PRE>");
 242             out.println("From- " + con.client);
 243                         out.println("</BODY></HTML>");
 244          }
 245     }
 246
 247         protected void WriteSpecialResponse(String specialcase) throws IOException {
 248         out.println("HTTP/1.1 200 OK");
 249         out.println("Server: HTTP Test Server/1.1");
 250         out.println("Content-Type: text/plain");
 251
 252                 StringTokenizer st = new StringTokenizer(specialcase, " &");
 253                 while (st.hasMoreTokens()) {
 254                     String pair = st.nextToken();
 255                 if (pair.startsWith("Length=") || pair.startsWith("length="))
 256                 {
 257
 258                 int len = Integer.valueOf(pair.substring(
 259                             pair.indexOf('=')+1), 10).intValue();
 260
 261                         out.println("Date: " + (new Date()).toString());
 262                         out.println("Content-Length: " + len);
 263                         out.println("\n");
 264                         for (int i = 0; i<len; i++) {
 265                     out.print ((char)i%10);
 266                     if ((i>0) && ((i+1)%80) == 0)
 267                                 out.print('\n');
 268                             out.flush();
 269                         }
 270                         return;
 271                 }
 272         }
 273
 274         }
 275
 276     protected void WriteHeadResponse() {
 277         out.println("HTTP/1.1 200 OK");
 278         out.println("Server: HTTP Test Server/1.1");
 279         out.println("Content-Type: text/plain");
 280         out.println("Content-Length: 1000" ); // bogus
 281         out.println("Date: " + (new Date()).toString());
 282         out.println(); // also test without it
 283         out.flush();
 284     }
 285
 286     String file = null;
 287     // The string associated with this script occurence
 288
 289     String request;
 290     PrintWriter out;
 291     Connection con;
 292 }