src/src/org/ultramonkey/l7/controller/GetServ.java

   1 package org.ultramonkey.l7.controller;
   2
   3 import java.util.regex.*;
   4 import java.io.*;
   5
   6 import org.apache.log4j.Logger;
   7 import org.ultramonkey.l7.model.LogCategorySet;
   8
   9 /**
  10  *
  11  * <p>
  12  * class GetServ
  13  * </p>
  14  * <p>
  15  * Copyright(c) NTT COMWARE 2008
  16  * </p>
  17  *
  18  * @author tanuma
  19  */
  20 public class GetServ {
  21
  22         /**
  23          * services filename
  24          */
  25         private static final String SERVICE_FILENAME = "/etc/services";
  26
  27         /**
  28          *
  29          * <p>
  30          * byName method
  31          * </p>
  32          *
  33          * @param name
  34          *            service name
  35          * @param proto
  36          *            protocol name
  37          * @return
  38          */
  39         public static String byName(String name, String proto) {
  40                 // --- debug log (in method) ---
  41                 Logger ioFileLogger = Logger.getLogger(LogCategorySet.GUI_IO_FILE);
  42                 if (ioFileLogger.isDebugEnabled()) {
  43                         ioFileLogger
  44                                         .debug("11584 GetServ::byName(String name, String proto) in name=\""
  45                                                         + name + "\", proto=\"" + proto + "\"");
  46                 }
  47                 // --- debug log (in method) ---
  48
  49                 if (name == null || proto == null) {
  50                         // --- debug log (out method) ---
  51                         if (ioFileLogger.isDebugEnabled()) {
  52                                 ioFileLogger
  53                                                 .debug("11585 GetServ::byName(String name, String proto) out return=null");
  54                         }
  55                         // --- debug log (out method) ---
  56                         return null;
  57                 }
  58
  59                 try {
  60                         String port = null;
  61                         String line;
  62
  63                         String regex = "^([-_a-zA-Z0-9]+)\\s+(\\d+)/([-_a-zA-Z0-9]+)([-_a-zA-Z0-9\\s]+)*$";
  64                         Pattern p = Pattern.compile(regex);
  65
  66                         BufferedReader br = new BufferedReader(new InputStreamReader(
  67                                         new FileInputStream(SERVICE_FILENAME)));
  68
  69                         while ((line = br.readLine()) != null && port == null) {
  70                                 line = line.replaceAll("#.*", "");
  71                                 if (line.length() != 0) {
  72                                         Matcher m = p.matcher(line.trim());
  73                                         if (m.matches() && m.group(3).equals(proto)) {
  74                                                 if (m.group(1).equals(name)) {
  75                                                         port = m.group(2);
  76                                                 } else if (m.group(4) != null) {
  77                                                         String[] aliases = m.group(4).split("\\s");
  78                                                         for (String alias : aliases) {
  79                                                                 if (alias.equals(name)) {
  80                                                                         port = m.group(2);
  81                                                                         break;
  82                                                                 }
  83                                                         }
  84                                                 }
  85                                         }
  86                                 }
  87                         }
  88                         br.close();
  89                         if (port != null) {
  90                                 // --- debug log (out method) ---
  91                                 if (ioFileLogger.isDebugEnabled()) {
  92                                         ioFileLogger.debug("11586 GetServ::byName(String name, String proto) out return=\"" + port + "\"");
  93                                 }
  94                                 // --- debug log (out method) ---
  95                                 return port;
  96                         } else {
  97                                 // --- debug log (out method) ---
  98                                 if (ioFileLogger.isDebugEnabled()) {
  99                                         ioFileLogger.debug("11587 GetServ::byName(String name, String proto) out return=\"" + name + "\"");
 100                                 }
 101                                 // --- debug log (out method) ---
 102                                 return name;
 103                         }
 104                 } catch (IOException ioe) {
 105                         // --- debug log (out method) ---
 106                         if (ioFileLogger.isDebugEnabled()) {
 107                                 ioFileLogger.debug("11588 GetServ::byName(String name, String proto) out return=null");
 108                         }
 109                         // --- debug log (out method) ---
 110                         return null;
 111                 }
 112         }
 113 }