Mercurial Hosting > luan
annotate src/luan/modules/url/LuanUrl.java @ 1244:d1911842c2be
minor url post fix
| author | Franklin Schmidt <fschmidt@gmail.com> |
|---|---|
| date | Mon, 09 Jul 2018 00:52:25 -0600 |
| parents | 668f29bc52ea |
| children | 9fa8b8389578 |
| rev | line source |
|---|---|
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1 package luan.modules.url; |
| 722 | 2 |
| 3 import java.io.InputStream; | |
| 4 import java.io.InputStreamReader; | |
| 5 import java.io.OutputStream; | |
| 6 import java.io.Reader; | |
| 7 import java.io.IOException; | |
| 8 import java.io.UnsupportedEncodingException; | |
| 9 import java.net.URL; | |
| 10 import java.net.URLConnection; | |
| 11 import java.net.HttpURLConnection; | |
| 12 import java.net.URLEncoder; | |
| 13 import java.util.Map; | |
| 14 import java.util.HashMap; | |
| 15 import java.util.List; | |
| 16 import java.util.Base64; | |
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17 import luan.Luan; |
| 722 | 18 import luan.LuanState; |
| 19 import luan.LuanTable; | |
| 20 import luan.LuanJavaFunction; | |
| 21 import luan.LuanException; | |
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22 import luan.modules.IoLuan; |
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23 import luan.modules.Utils; |
| 722 | 24 |
| 25 | |
| 26 public final class LuanUrl extends IoLuan.LuanIn { | |
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27 |
| 722 | 28 private static enum Method { GET, POST, DELETE } |
| 29 | |
| 30 private URL url; | |
| 31 private Method method = Method.GET; | |
| 32 private Map headers; | |
| 1244 | 33 private String content = ""; |
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34 private MultipartClient multipart = null; |
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35 private int timeout = 0; |
| 722 | 36 |
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37 public LuanUrl(LuanState luan,URL url,LuanTable options) throws LuanException { |
| 722 | 38 this.url = url; |
| 39 if( options != null ) { | |
| 40 Map map = options.asMap(luan); | |
| 41 String methodStr = getString(map,"method"); | |
| 42 if( methodStr != null ) { | |
| 43 methodStr = methodStr.toUpperCase(); | |
| 44 try { | |
| 45 this.method = Method.valueOf(methodStr); | |
| 46 } catch(IllegalArgumentException e) { | |
| 47 throw new LuanException( "invalid method: "+methodStr ); | |
| 48 } | |
| 49 } | |
| 723 | 50 Map headerMap = getMap(luan,map,"headers"); |
| 51 if( headerMap != null ) { | |
| 52 headers = new HashMap(); | |
| 53 for( Object hack : headerMap.entrySet() ) { | |
| 54 Map.Entry entry = (Map.Entry)hack; | |
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55 String name = (String)entry.getKey(); |
| 723 | 56 Object val = entry.getValue(); |
| 57 if( val instanceof String ) { | |
| 58 headers.put(name,val); | |
| 59 } else { | |
| 60 if( !(val instanceof LuanTable) ) | |
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61 throw new LuanException( "header '"+name+"' must be string or table" ); |
| 723 | 62 LuanTable t = (LuanTable)val; |
| 63 if( !t.isList() ) | |
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64 throw new LuanException( "header '"+name+"' table must be list" ); |
| 723 | 65 headers.put(name,t.asList()); |
| 66 } | |
| 67 } | |
| 68 } | |
| 722 | 69 Map auth = getMap(luan,map,"authorization"); |
| 70 if( auth != null ) { | |
| 1151 | 71 if( headers!=null && headers.containsKey("authorization") ) |
| 72 throw new LuanException( "can't define authorization with header 'authorization' defined" ); | |
| 722 | 73 String user = getString(auth,"user"); |
| 74 String password = getString(auth,"password"); | |
| 75 if( !auth.isEmpty() ) | |
| 76 throw new LuanException( "unrecognized authorization options: "+auth ); | |
| 77 StringBuilder sb = new StringBuilder(); | |
| 78 if( user != null ) | |
| 79 sb.append(user); | |
| 80 sb.append(':'); | |
| 81 if( password != null ) | |
| 82 sb.append(password); | |
| 83 String val = "Basic " + Base64.getEncoder().encodeToString(sb.toString().getBytes()); | |
| 84 if( headers == null ) | |
| 85 headers = new HashMap(); | |
| 1151 | 86 headers.put("authorization",val); |
| 722 | 87 } |
| 88 Map params = getMap(luan,map,"parameters"); | |
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89 String enctype = getString(map,"enctype"); |
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90 if( enctype != null ) { |
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91 if( !enctype.equals("multipart/form-data") ) |
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92 throw new LuanException( "unrecognized enctype: "+enctype ); |
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93 if( this.method!=Method.POST ) |
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94 throw new LuanException( "multipart/form-data can only be used with POST" ); |
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95 if( params==null ) |
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96 throw new LuanException( "multipart/form-data requires parameters" ); |
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97 if( params.isEmpty() ) |
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98 throw new LuanException( "multipart/form-data parameters can't be empty" ); |
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99 multipart = new MultipartClient(params); |
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100 } |
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101 else if( params != null ) { |
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102 StringBuilder sb = new StringBuilder(); |
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103 for( Object hack : params.entrySet() ) { |
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104 Map.Entry entry = (Map.Entry)hack; |
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105 String key = (String)entry.getKey(); |
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106 Object val = entry.getValue(); |
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107 String keyEnc = encode(key); |
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108 if( val instanceof String ) { |
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109 and(sb); |
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110 sb.append( keyEnc ).append( '=' ).append( encode((String)val) ); |
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111 } else { |
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112 if( !(val instanceof LuanTable) ) |
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113 throw new LuanException( "parameter '"+key+"' must be string or table" ); |
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114 LuanTable t = (LuanTable)val; |
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115 if( !t.isList() ) |
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116 throw new LuanException( "parameter '"+key+"' table must be list" ); |
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117 for( Object obj : t.asList() ) { |
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118 if( !(obj instanceof String) ) |
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119 throw new LuanException( "parameter '"+key+"' values must be strings" ); |
| 722 | 120 and(sb); |
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121 sb.append( keyEnc ).append( '=' ).append( encode((String)obj) ); |
| 722 | 122 } |
| 123 } | |
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124 } |
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125 if( this.method==Method.POST ) { |
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126 content = sb.toString(); |
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127 } else { |
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128 String urlS = this.url.toString(); |
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129 if( urlS.indexOf('?') == -1 ) { |
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130 urlS += '?'; |
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131 } else { |
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132 urlS += '&'; |
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133 } |
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134 urlS += sb; |
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135 try { |
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136 this.url = new URL(urlS); |
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137 } catch(IOException e) { |
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138 throw new RuntimeException(e); |
| 722 | 139 } |
| 140 } | |
| 141 } | |
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142 Integer timeout = getInt(map,"time_out"); |
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143 if( timeout != null ) |
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144 this.timeout = timeout; |
| 722 | 145 if( !map.isEmpty() ) |
| 146 throw new LuanException( "unrecognized options: "+map ); | |
| 147 } | |
| 148 } | |
| 149 | |
| 150 private static void and(StringBuilder sb) { | |
| 151 if( sb.length() > 0 ) | |
| 152 sb.append('&'); | |
| 153 } | |
| 154 | |
| 155 private static String encode(String s) { | |
| 156 try { | |
| 157 return URLEncoder.encode(s,"UTF-8"); | |
| 158 } catch(UnsupportedEncodingException e) { | |
| 159 throw new RuntimeException(e); | |
| 160 } | |
| 161 } | |
| 162 | |
| 163 private static String getString(Map map,String key) throws LuanException { | |
| 164 Object val = map.remove(key); | |
| 165 if( val!=null && !(val instanceof String) ) | |
| 166 throw new LuanException( "parameter '"+key+"' must be a string" ); | |
| 167 return (String)val; | |
| 168 } | |
| 169 | |
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170 private static Integer getInt(Map map,String key) throws LuanException { |
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171 Object val = map.remove(key); |
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172 if( val==null ) |
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173 return null; |
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174 Integer i = Luan.asInteger(val); |
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175 if( i==null ) |
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176 throw new LuanException( "parameter '"+key+"' must be an integer" ); |
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177 return i; |
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178 } |
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179 |
| 722 | 180 private static LuanTable getTable(Map map,String key) throws LuanException { |
| 181 Object val = map.remove(key); | |
| 182 if( val!=null && !(val instanceof LuanTable) ) | |
| 183 throw new LuanException( "parameter '"+key+"' must be a table" ); | |
| 184 return (LuanTable)val; | |
| 185 } | |
| 186 | |
| 187 private static Map getMap(LuanState luan,Map map,String key) throws LuanException { | |
| 188 LuanTable t = getTable(map,key); | |
| 189 return t==null ? null : t.asMap(luan); | |
| 190 } | |
| 191 | |
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192 @Override public InputStream inputStream() throws IOException, LuanException { |
| 722 | 193 URLConnection con = url.openConnection(); |
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194 if( timeout != 0 ) { |
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195 con.setConnectTimeout(timeout); |
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196 con.setReadTimeout(timeout); |
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197 } |
| 722 | 198 if( headers != null ) { |
| 199 for( Object hack : headers.entrySet() ) { | |
| 200 Map.Entry entry = (Map.Entry)hack; | |
| 201 String key = (String)entry.getKey(); | |
| 202 Object val = entry.getValue(); | |
| 203 if( val instanceof String ) { | |
| 204 con.addRequestProperty(key,(String)val); | |
| 205 } else { | |
| 206 List list = (List)val; | |
| 207 for( Object obj : list ) { | |
| 208 con.addRequestProperty(key,(String)obj); | |
| 209 } | |
| 210 } | |
| 211 } | |
| 212 } | |
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213 if( !(con instanceof HttpURLConnection) ) { |
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214 if( method!=Method.GET ) |
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215 throw new LuanException("method must be GET but is "+method); |
| 722 | 216 return con.getInputStream(); |
| 217 } | |
| 218 | |
| 219 HttpURLConnection httpCon = (HttpURLConnection)con; | |
| 220 | |
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221 if( method==Method.GET ) { |
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222 return getInputStream(httpCon); |
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223 } |
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224 |
| 722 | 225 if( method==Method.DELETE ) { |
| 226 httpCon.setRequestMethod("DELETE"); | |
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227 return getInputStream(httpCon); |
| 722 | 228 } |
| 229 | |
| 230 // POST | |
| 231 | |
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232 // httpCon.setRequestProperty("content-type","application/x-www-form-urlencoded"); |
| 722 | 233 httpCon.setDoOutput(true); |
| 234 httpCon.setRequestMethod("POST"); | |
| 235 | |
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236 OutputStream out; |
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237 if( multipart != null ) { |
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238 out = multipart.write(httpCon); |
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239 } else { |
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240 byte[] post = content.getBytes(); |
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241 // httpCon.setRequestProperty("Content-Length",Integer.toString(post.length)); |
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242 out = httpCon.getOutputStream(); |
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243 out.write(post); |
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244 } |
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245 out.flush(); |
| 722 | 246 try { |
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247 return getInputStream(httpCon); |
| 722 | 248 } finally { |
| 249 out.close(); | |
| 250 } | |
| 251 } | |
| 252 | |
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253 private static InputStream getInputStream(HttpURLConnection httpCon) throws IOException, LuanException { |
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254 try { |
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255 return httpCon.getInputStream(); |
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256 } catch(IOException e) { |
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257 int responseCode = httpCon.getResponseCode(); |
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258 String responseMessage = httpCon.getResponseMessage(); |
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259 InputStream is = httpCon.getErrorStream(); |
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260 if( is == null ) |
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261 throw e; |
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262 Reader in = new InputStreamReader(is); |
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263 String msg = Utils.readAll(in); |
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264 in.close(); |
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265 LuanException le = new LuanException(msg,e); |
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266 LuanTable tbl = le.table(); |
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267 tbl.rawPut("response_code",responseCode); |
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268 tbl.rawPut("response_message",responseMessage); |
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269 throw le; |
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270 } |
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271 } |
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272 |
| 722 | 273 @Override public String to_string() { |
| 274 return url.toString(); | |
| 275 } | |
| 276 | |
| 277 @Override public String to_uri_string() { | |
| 278 return url.toString(); | |
| 279 } | |
| 280 /* | |
| 281 public String post(String postS) throws IOException { | |
| 282 return new UrlCall(url).post(postS); | |
| 283 } | |
| 284 | |
| 285 @Override public LuanTable table() { | |
| 286 LuanTable tbl = super.table(); | |
| 287 try { | |
| 288 tbl.rawPut( "post", new LuanJavaFunction( | |
| 289 LuanUrl.class.getMethod( "post", String.class ), this | |
| 290 ) ); | |
| 291 } catch(NoSuchMethodException e) { | |
| 292 throw new RuntimeException(e); | |
| 293 } | |
| 294 return tbl; | |
| 295 } | |
| 296 */ | |
| 297 } |