Home | History | Annotate | Download | only in net 
      1 /*
      2  * Copyright (C) 2006 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package android.net;
     18 
     19 import static android.util.Patterns.GOOD_IRI_CHAR;
     20 
     21 import java.util.Locale;
     22 import java.util.regex.Matcher;
     23 import java.util.regex.Pattern;
     24 
     25 /**
     26  * {@hide}
     27  *
     28  * Web Address Parser
     29  *
     30  * This is called WebAddress, rather than URL or URI, because it
     31  * attempts to parse the stuff that a user will actually type into a
     32  * browser address widget.
     33  *
     34  * Unlike java.net.uri, this parser will not choke on URIs missing
     35  * schemes.  It will only throw a ParseException if the input is
     36  * really hosed.
     37  *
     38  * If given an https scheme but no port, fills in port
     39  *
     40  */
     41 public class WebAddress {
     42 
     43     private String mScheme;
     44     private String mHost;
     45     private int mPort;
     46     private String mPath;
     47     private String mAuthInfo;
     48 
     49     static final int MATCH_GROUP_SCHEME = 1;
     50     static final int MATCH_GROUP_AUTHORITY = 2;
     51     static final int MATCH_GROUP_HOST = 3;
     52     static final int MATCH_GROUP_PORT = 4;
     53     static final int MATCH_GROUP_PATH = 5;
     54 
     55     static Pattern sAddressPattern = Pattern.compile(
     56             /* scheme    */ "(?:(http|https|file)\\:\\/\\/)?" +
     57             /* authority */ "(?:([-A-Za-z0-9$_.+!*'(),;?&=]+(?:\\:[-A-Za-z0-9$_.+!*'(),;?&=]+)?)@)?" +
     58             /* host      */ "([" + GOOD_IRI_CHAR + "%_-][" + GOOD_IRI_CHAR + "%_\\.-]*|\\[[0-9a-fA-F:\\.]+\\])?" +
     59             /* port      */ "(?:\\:([0-9]*))?" +
     60             /* path      */ "(\\/?[^#]*)?" +
     61             /* anchor    */ ".*", Pattern.CASE_INSENSITIVE);
     62 
     63     /** parses given uriString. */
     64     public WebAddress(String address) throws ParseException {
     65         if (address == null) {
     66             throw new NullPointerException();
     67         }
     68 
     69         // android.util.Log.d(LOGTAG, "WebAddress: " + address);
     70 
     71         mScheme = "";
     72         mHost = "";
     73         mPort = -1;
     74         mPath = "/";
     75         mAuthInfo = "";
     76 
     77         Matcher m = sAddressPattern.matcher(address);
     78         String t;
     79         if (m.matches()) {
     80             t = m.group(MATCH_GROUP_SCHEME);
     81             if (t != null) mScheme = t.toLowerCase(Locale.ROOT);
     82             t = m.group(MATCH_GROUP_AUTHORITY);
     83             if (t != null) mAuthInfo = t;
     84             t = m.group(MATCH_GROUP_HOST);
     85             if (t != null) mHost = t;
     86             t = m.group(MATCH_GROUP_PORT);
     87             if (t != null && t.length() > 0) {
     88                 // The ':' character is not returned by the regex.
     89                 try {
     90                     mPort = Integer.parseInt(t);
     91                 } catch (NumberFormatException ex) {
     92                     throw new ParseException("Bad port");
     93                 }
     94             }
     95             t = m.group(MATCH_GROUP_PATH);
     96             if (t != null && t.length() > 0) {
     97                 /* handle busted myspace frontpage redirect with
     98                    missing initial "/" */
     99                 if (t.charAt(0) == '/') {
    100                     mPath = t;
    101                 } else {
    102                     mPath = "/" + t;
    103                 }
    104             }
    105 
    106         } else {
    107             // nothing found... outa here
    108             throw new ParseException("Bad address");
    109         }
    110 
    111         /* Get port from scheme or scheme from port, if necessary and
    112            possible */
    113         if (mPort == 443 && mScheme.equals("")) {
    114             mScheme = "https";
    115         } else if (mPort == -1) {
    116             if (mScheme.equals("https"))
    117                 mPort = 443;
    118             else
    119                 mPort = 80; // default
    120         }
    121         if (mScheme.equals("")) mScheme = "http";
    122     }
    123 
    124     @Override
    125     public String toString() {
    126         String port = "";
    127         if ((mPort != 443 && mScheme.equals("https")) ||
    128             (mPort != 80 && mScheme.equals("http"))) {
    129             port = ":" + Integer.toString(mPort);
    130         }
    131         String authInfo = "";
    132         if (mAuthInfo.length() > 0) {
    133             authInfo = mAuthInfo + "@";
    134         }
    135 
    136         return mScheme + "://" + authInfo + mHost + port + mPath;
    137     }
    138 
    139     public void setScheme(String scheme) {
    140       mScheme = scheme;
    141     }
    142 
    143     public String getScheme() {
    144       return mScheme;
    145     }
    146 
    147     public void setHost(String host) {
    148       mHost = host;
    149     }
    150 
    151     public String getHost() {
    152       return mHost;
    153     }
    154 
    155     public void setPort(int port) {
    156       mPort = port;
    157     }
    158 
    159     public int getPort() {
    160       return mPort;
    161     }
    162 
    163     public void setPath(String path) {
    164       mPath = path;
    165     }
    166 
    167     public String getPath() {
    168       return mPath;
    169     }
    170 
    171     public void setAuthInfo(String authInfo) {
    172       mAuthInfo = authInfo;
    173     }
    174 
    175     public String getAuthInfo() {
    176       return mAuthInfo;
    177     }
    178 }
    179