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annotate src/luan/modules/url/LuanUrl.java @ 1810:3c43b07e12b7 default tip

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minor
author Franklin Schmidt <fschmidt@gmail.com>
date Sun, 12 May 2024 22:00:42 -0600
parents 6668513a11d7
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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diff changeset
1 package luan.modules.url;
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2
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3 import java.io.InputStream;
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4 import java.io.InputStreamReader;
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5 import java.io.OutputStream;
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6 import java.io.Reader;
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7 import java.io.IOException;
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8 import java.io.FileNotFoundException;
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9 import java.io.UnsupportedEncodingException;
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10 import java.net.URL;
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11 import java.net.URLConnection;
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12 import java.net.HttpURLConnection;
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13 import java.net.URLEncoder;
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14 import java.net.SocketTimeoutException;
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15 import java.security.MessageDigest;
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16 import java.security.NoSuchAlgorithmException;
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17 import java.util.Map;
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18 import java.util.HashMap;
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19 import java.util.List;
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20 import java.util.Base64;
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21 import goodjava.io.IoUtils;
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22 import goodjava.parser.ParseException;
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23 import luan.Luan;
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24 import luan.LuanTable;
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25 import luan.LuanJavaFunction;
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26 import luan.LuanException;
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27 import luan.modules.IoLuan;
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28 import luan.modules.StringLuan;
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29 import luan.modules.Utils;
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30
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31
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32 public final class LuanUrl extends IoLuan.LuanIn {
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33
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34 private static enum Method { GET, POST, DELETE, PUT }
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35
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36 public final URL url;
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37 private Method method = Method.GET;
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38 private final Map<String,Object> headers = new HashMap<String,Object>();
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39 private static final byte[] NO_CONTENT = new byte[0];
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40 private byte[] content = NO_CONTENT;
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41 private MultipartClient multipart = null;
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42 private int timeout = 60000;
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43 private String authUsername = null;
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44 private String authPassword = null;
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45 public HttpURLConnection httpCon;
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46
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47 public LuanUrl(URL url,LuanTable options) throws LuanException {
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48 if( options != null ) {
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49 options = new LuanTable(options);
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50 String methodStr = Utils.removeString(options,"method");
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51 if( methodStr != null ) {
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52 methodStr = methodStr.toUpperCase();
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53 try {
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54 this.method = Method.valueOf(methodStr);
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55 } catch(IllegalArgumentException e) {
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56 throw new LuanException( "invalid method: "+methodStr );
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57 }
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58 }
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59 Map headerMap = removeMap(options,"headers");
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60 if( headerMap != null ) {
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61 for( Object hack : headerMap.entrySet() ) {
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62 Map.Entry entry = (Map.Entry)hack;
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63 String name = (String)entry.getKey();
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64 Object val = entry.getValue();
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65 if( val instanceof String ) {
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66 headers.put(name,val);
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67 } else {
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68 if( !(val instanceof LuanTable) )
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69 throw new LuanException( "header '"+name+"' must be string or table" );
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70 LuanTable t = (LuanTable)val;
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71 if( !t.isList() )
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72 throw new LuanException( "header '"+name+"' table must be list" );
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73 headers.put(name,t.asList());
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74 }
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75 }
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76 }
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77 LuanTable auth = Utils.removeTable(options,"authorization");
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78 if( auth != null ) {
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79 auth = new LuanTable(auth);
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80 if( headers!=null && headers.containsKey("authorization") )
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81 throw new LuanException( "can't define authorization with header 'authorization' defined" );
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82 String username = Utils.removeString(auth,"username");
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83 if( username==null ) username = "";
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84 String password = Utils.removeString(auth,"password");
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85 if( password==null ) password = "";
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86 String type = Utils.removeString(auth,"type");
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87 if( !auth.isEmpty() )
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88 throw new LuanException( "unrecognized authorization options: "+auth );
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89 if( type != null ) {
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90 if( !type.toLowerCase().equals("basic") )
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91 throw new LuanException( "authorization type can only be 'basic' or nil" );
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92 String val = basicAuth(username,password);
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93 headers.put("authorization",val);
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94 } else {
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95 authUsername = username;
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96 authPassword = password;
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97 }
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98 }
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99 Map params = removeMap(options,"parameters");
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100 String enctype = Utils.removeString(options,"enctype");
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101 Object content = options.remove("content");
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102 if( content != null ) {
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103 if( this.method != Method.POST && this.method != Method.PUT )
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104 throw new LuanException( "content can only be used with POST or PUT" );
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105 if( params != null )
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106 throw new LuanException( "content cannot be used with parameters" );
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107 if( content instanceof String ) {
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108 this.content = ((String)content).getBytes();
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109 } else if( content instanceof byte[] ) {
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110 this.content = (byte[])content;
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111 } else
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112 throw new LuanException( "content must be String or byte[]" );
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113 }
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114 if( enctype != null ) {
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115 if( !enctype.equals("multipart/form-data") )
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116 throw new LuanException( "unrecognized enctype: "+enctype );
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117 if( this.method != Method.POST && this.method != Method.PUT )
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118 throw new LuanException( "multipart/form-data can only be used with POST or PUT" );
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119 if( params==null )
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120 throw new LuanException( "multipart/form-data requires parameters" );
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121 if( params.isEmpty() )
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122 throw new LuanException( "multipart/form-data parameters can't be empty" );
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123 multipart = new MultipartClient(params);
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124 }
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125 else if( params != null ) {
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126 StringBuilder sb = new StringBuilder();
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127 for( Object hack : params.entrySet() ) {
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128 Map.Entry entry = (Map.Entry)hack;
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129 String key = (String)entry.getKey();
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130 Object val = entry.getValue();
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131 String keyEnc = encode(key);
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132 if( val instanceof String ) {
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133 and(sb);
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134 sb.append( keyEnc ).append( '=' ).append( encode((String)val) );
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135 } else {
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136 if( !(val instanceof LuanTable) )
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137 throw new LuanException( "parameter '"+key+"' must be string or table" );
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138 LuanTable t = (LuanTable)val;
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139 if( !t.isList() )
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140 throw new LuanException( "parameter '"+key+"' table must be list" );
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141 for( Object obj : t.asList() ) {
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142 if( !(obj instanceof String) )
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143 throw new LuanException( "parameter '"+key+"' values must be strings" );
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144 and(sb);
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145 sb.append( keyEnc ).append( '=' ).append( encode((String)obj) );
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146 }
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147 }
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148 }
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149 if( this.method==Method.POST ) {
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150 this.content = sb.toString().getBytes();
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151 } else {
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152 String urlS = url.toString();
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153 if( urlS.indexOf('?') == -1 ) {
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154 urlS += '?';
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155 } else {
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diff changeset
156 urlS += '&';
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157 }
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diff changeset
158 urlS += sb;
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159 try {
1354
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diff changeset
160 url = new URL(urlS);
726
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diff changeset
161 } catch(IOException e) {
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diff changeset
162 throw new RuntimeException(e);
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163 }
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164 }
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165 }
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166 Integer timeout = Utils.removeInteger(options,"time_out");
733
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167 if( timeout != null )
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168 this.timeout = timeout;
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169 Utils.checkEmpty(options);
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170 }
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171 this.url = url;
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172 }
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173
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diff changeset
174 private static void and(StringBuilder sb) {
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175 if( sb.length() > 0 )
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176 sb.append('&');
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177 }
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178
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179 private static String encode(String s) {
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180 try {
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181 return URLEncoder.encode(s,"UTF-8");
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182 } catch(UnsupportedEncodingException e) {
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183 throw new RuntimeException(e);
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184 }
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185 }
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186
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187 private static Map removeMap(LuanTable options,String key) throws LuanException {
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188 LuanTable t = Utils.removeTable(options,key);
1267
9fa8b8389578 add LuanTable.luan;
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189 return t==null ? null : t.asMap();
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190 }
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191
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diff changeset
192 @Override public InputStream inputStream() throws IOException, LuanException {
1317
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193 try {
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194 return inputStream(null);
1511
fb5be0e8ca54 better time_out
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195 } catch(SocketTimeoutException e) {
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diff changeset
196 String msg = e.getMessage();
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diff changeset
197 if( msg != null ) {
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diff changeset
198 throw new LuanException(e.getMessage());
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diff changeset
199 } else {
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200 throw e;
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201 }
1317
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diff changeset
202 } catch(AuthException e) {
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diff changeset
203 try {
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diff changeset
204 return inputStream(e.authorization);
1317
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205 } catch(AuthException e2) {
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diff changeset
206 throw new RuntimeException(e2); // never
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diff changeset
207 }
c286c1e36b81 add client digest authentication
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diff changeset
208 }
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diff changeset
209 }
c286c1e36b81 add client digest authentication
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diff changeset
210
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diff changeset
211 private InputStream inputStream(String authorization)
1317
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212 throws IOException, LuanException, AuthException
c286c1e36b81 add client digest authentication
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diff changeset
213 {
722
647602e8291a add url options
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parents:
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214 URLConnection con = url.openConnection();
733
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diff changeset
215 if( timeout != 0 ) {
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diff changeset
216 con.setConnectTimeout(timeout);
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diff changeset
217 con.setReadTimeout(timeout);
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diff changeset
218 }
1317
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diff changeset
219 for( Map.Entry<String,Object> entry : headers.entrySet() ) {
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diff changeset
220 String key = entry.getKey();
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diff changeset
221 Object val = entry.getValue();
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diff changeset
222 if( val instanceof String ) {
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diff changeset
223 con.addRequestProperty(key,(String)val);
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diff changeset
224 } else {
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diff changeset
225 List list = (List)val;
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diff changeset
226 for( Object obj : list ) {
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diff changeset
227 con.addRequestProperty(key,(String)obj);
722
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228 }
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229 }
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diff changeset
230 }
1317
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diff changeset
231 if( authorization != null )
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diff changeset
232 con.addRequestProperty("Authorization",authorization);
1087
4aab4dd3ac9c improve url error handling
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diff changeset
233 if( !(con instanceof HttpURLConnection) ) {
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diff changeset
234 if( method!=Method.GET )
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diff changeset
235 throw new LuanException("method must be GET but is "+method);
722
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236 return con.getInputStream();
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parents:
diff changeset
237 }
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parents:
diff changeset
238
1364
45363886f256 add url methods
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diff changeset
239 httpCon = (HttpURLConnection)con;
722
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parents:
diff changeset
240
1087
4aab4dd3ac9c improve url error handling
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diff changeset
241 if( method==Method.GET ) {
1335
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diff changeset
242 return getInputStream(httpCon,authorization);
1087
4aab4dd3ac9c improve url error handling
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diff changeset
243 }
4aab4dd3ac9c improve url error handling
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diff changeset
244
722
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parents:
diff changeset
245 if( method==Method.DELETE ) {
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parents:
diff changeset
246 httpCon.setRequestMethod("DELETE");
1335
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diff changeset
247 return getInputStream(httpCon,authorization);
722
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parents:
diff changeset
248 }
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diff changeset
249
1759
6668513a11d7 fix PUT
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parents: 1753
diff changeset
250 /*
1753
83780735ad9c add url put
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diff changeset
251 if( method==Method.PUT ) {
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diff changeset
252 httpCon.setRequestMethod("PUT");
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diff changeset
253 return getInputStream(httpCon,authorization);
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parents: 1649
diff changeset
254 }
1759
6668513a11d7 fix PUT
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parents: 1753
diff changeset
255 */
1753
83780735ad9c add url put
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parents: 1649
diff changeset
256
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6668513a11d7 fix PUT
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diff changeset
257 // POST or PUT
722
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parents:
diff changeset
258
1165
668f29bc52ea clean up content-type
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parents: 1151
diff changeset
259 // httpCon.setRequestProperty("content-type","application/x-www-form-urlencoded");
722
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parents:
diff changeset
260 httpCon.setDoOutput(true);
1759
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parents: 1753
diff changeset
261 httpCon.setRequestMethod(method.toString());
722
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parents:
diff changeset
262
725
a741a3a33423 add url support for multipart/form-data
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parents: 723
diff changeset
263 OutputStream out;
a741a3a33423 add url support for multipart/form-data
Franklin Schmidt <fschmidt@gmail.com>
parents: 723
diff changeset
264 if( multipart != null ) {
a741a3a33423 add url support for multipart/form-data
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parents: 723
diff changeset
265 out = multipart.write(httpCon);
a741a3a33423 add url support for multipart/form-data
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parents: 723
diff changeset
266 } else {
1363
1a7b8e38921a add url post content
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parents: 1354
diff changeset
267 // httpCon.setRequestProperty("Content-Length",Integer.toString(content.length));
725
a741a3a33423 add url support for multipart/form-data
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parents: 723
diff changeset
268 out = httpCon.getOutputStream();
1363
1a7b8e38921a add url post content
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parents: 1354
diff changeset
269 out.write(content);
725
a741a3a33423 add url support for multipart/form-data
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parents: 723
diff changeset
270 }
726
14f136a4641f use enctype for multipart/form-data
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parents: 725
diff changeset
271 out.flush();
722
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parents:
diff changeset
272 try {
1335
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parents: 1333
diff changeset
273 return getInputStream(httpCon,authorization);
722
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parents:
diff changeset
274 } finally {
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parents:
diff changeset
275 out.close();
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parents:
diff changeset
276 }
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parents:
diff changeset
277 }
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parents:
diff changeset
278
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diff changeset
279 private InputStream getInputStream(HttpURLConnection httpCon,String authorization)
1317
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diff changeset
280 throws IOException, LuanException, AuthException
c286c1e36b81 add client digest authentication
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parents: 1315
diff changeset
281 {
1085
a04da9a3e9eb improve url delete error handling
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parents: 780
diff changeset
282 try {
a04da9a3e9eb improve url delete error handling
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diff changeset
283 return httpCon.getInputStream();
1349
0cceff521abb IO error handling
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parents: 1335
diff changeset
284 // } catch(FileNotFoundException e) {
0cceff521abb IO error handling
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parents: 1335
diff changeset
285 // throw e;
1085
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parents: 780
diff changeset
286 } catch(IOException e) {
1094
cb4c20fce7d0 add "response_code" and "response_message" to http url luan exceptions
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parents: 1087
diff changeset
287 int responseCode = httpCon.getResponseCode();
1318
35a6a195819f in authorization rename user to username
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parents: 1317
diff changeset
288 if( responseCode == 401 && authUsername != null && authorization==null ) {
1317
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parents: 1315
diff changeset
289 String authStr = httpCon.getHeaderField("www-authenticate");
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diff changeset
290 //System.out.println("auth = "+authStr);
1575
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parents: 1519
diff changeset
291 List<WwwAuthenticate> auths;
1317
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diff changeset
292 try {
1575
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parents: 1519
diff changeset
293 auths = WwwAuthenticate.parse(authStr);
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parents: 1519
diff changeset
294 } catch(ParseException pe) {
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parents: 1519
diff changeset
295 throw new LuanException(pe);
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parents: 1519
diff changeset
296 }
0160650180bc better http authentication
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parents: 1519
diff changeset
297 for( WwwAuthenticate auth : auths ) {
1317
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diff changeset
298 if( auth.type.equals("Basic") ) {
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parents: 1317
diff changeset
299 String val = basicAuth(authUsername,authPassword);
1317
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diff changeset
300 throw new AuthException(val);
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parents: 1315
diff changeset
301 } else if( auth.type.equals("Digest") ) {
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diff changeset
302 String realm = auth.options.get("realm");
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parents: 1315
diff changeset
303 if(realm==null) throw new RuntimeException("missing realm");
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parents: 1315
diff changeset
304 String algorithm = auth.options.get("algorithm");
c286c1e36b81 add client digest authentication
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parents: 1315
diff changeset
305 if( algorithm!=null && !algorithm.equals("MD5") )
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parents: 1315
diff changeset
306 throw new LuanException("unsupported digest algorithm: "+algorithm);
c286c1e36b81 add client digest authentication
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parents: 1315
diff changeset
307 String qop = auth.options.get("qop");
c286c1e36b81 add client digest authentication
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parents: 1315
diff changeset
308 if( qop!=null && !qop.equals("auth") )
c286c1e36b81 add client digest authentication
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parents: 1315
diff changeset
309 throw new LuanException("unsupported digest qop: "+qop);
c286c1e36b81 add client digest authentication
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parents: 1315
diff changeset
310 String nonce = auth.options.get("nonce");
c286c1e36b81 add client digest authentication
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parents: 1315
diff changeset
311 if(nonce==null) throw new RuntimeException("missing nonce");
c286c1e36b81 add client digest authentication
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parents: 1315
diff changeset
312 String uri = fullPath(url);
1318
35a6a195819f in authorization rename user to username
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parents: 1317
diff changeset
313 String a1 = authUsername + ':' + realm + ':' + authPassword;
1317
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parents: 1315
diff changeset
314 String a2 = "" + method + ':' + uri;
c286c1e36b81 add client digest authentication
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parents: 1315
diff changeset
315 String nc = "00000001";
c286c1e36b81 add client digest authentication
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parents: 1315
diff changeset
316 String cnonce = "7761faf2daa45b3b"; // who cares?
c286c1e36b81 add client digest authentication
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parents: 1315
diff changeset
317 String response = md5(a1) + ':' + nonce;
c286c1e36b81 add client digest authentication
Franklin Schmidt <fschmidt@gmail.com>
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318 if( qop != null ) {
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319 response += ':' + nc + ':' + cnonce + ':' + qop;
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320 }
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321 response += ':' + md5(a2);
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322 response = md5(response);
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323 String val = "Digest";
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324 val += " username=\"" + authUsername + "\"";
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325 val += ", realm=\"" + realm + "\"";
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326 val += ", uri=\"" + uri + "\"";
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327 val += ", nonce=\"" + nonce + "\"";
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328 val += ", response=\"" + response + "\"";
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329 if( qop != null ) {
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330 val += ", qop=" + qop;
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331 val += ", nc=" + nc;
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332 val += ", cnonce=\"" + cnonce + "\"";
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333 }
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334 //System.out.println("val = "+val);
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335 throw new AuthException(val);
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336 }
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337 }
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338 throw new RuntimeException(authStr);
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339 }
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340 String msg = "" + responseCode;
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341 String responseMessage = httpCon.getResponseMessage();
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342 if( responseMessage != null )
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343 msg += " - " + responseMessage;
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344 String responseContent = null;
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345 InputStream is = httpCon.getErrorStream();
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346 if( is != null ) {
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347 Reader in = new InputStreamReader(is);
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348 responseContent = IoUtils.readAll(in);
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349 in.close();
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350 msg += "\n" + responseContent;
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351 }
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352 LuanException le = new LuanException(msg,e);
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353 le.put("response_code",responseCode);
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354 le.put("response_message",responseMessage);
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355 le.put("response_content",responseContent);
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356 throw le;
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357 }
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358 }
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359
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360 @Override public String to_string() {
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361 return url.toString();
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362 }
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363
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364 @Override public String to_uri_string() {
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365 return url.toString();
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366 }
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367
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368 private static String basicAuth(String username,String password) {
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369 String s = username + ':' + password;
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370 return "Basic " + Base64.getEncoder().encodeToString(s.getBytes());
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371 }
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372
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373 private final class AuthException extends Exception {
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374 final String authorization;
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375
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376 AuthException(String authorization) {
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377 this.authorization = authorization;
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378 }
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379 }
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380
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381 // retarded java api lacks this
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382 public static String fullPath(URL url) {
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383 String path = url.getPath();
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384 String query = url.getQuery();
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385 if( query != null )
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386 path += "?" + query;
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387 return path;
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388 }
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389
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390 public static String md5(String s) {
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391 try {
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392 return StringLuan.digest_message("MD5",s);
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393 } catch(LuanException e) {
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394 throw new RuntimeException(e);
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395 } catch(NoSuchAlgorithmException e) {
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396 throw new RuntimeException(e);
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397 }
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398 }
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399
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400 }