Mercurial Hosting > luan
annotate core/src/luan/modules/url/LuanUrl.java @ 726:14f136a4641f
use enctype for multipart/form-data
| author | Franklin Schmidt <fschmidt@gmail.com> |
|---|---|
| date | Thu, 09 Jun 2016 18:43:32 -0600 |
| parents | a741a3a33423 |
| children | ffbbe25dab09 |
| 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; | |
| 17 import luan.LuanState; | |
| 18 import luan.LuanTable; | |
| 19 import luan.LuanJavaFunction; | |
| 20 import luan.LuanException; | |
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21 import luan.modules.IoLuan; |
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22 import luan.modules.Utils; |
| 722 | 23 |
| 24 | |
| 25 public final class LuanUrl extends IoLuan.LuanIn { | |
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26 |
| 722 | 27 private static enum Method { GET, POST, DELETE } |
| 28 | |
| 29 private URL url; | |
| 30 private Method method = Method.GET; | |
| 31 private Map headers; | |
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32 private String content = null; |
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33 private MultipartClient multipart = null; |
| 722 | 34 |
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35 public LuanUrl(LuanState luan,URL url,LuanTable options) throws LuanException { |
| 722 | 36 this.url = url; |
| 37 if( options != null ) { | |
| 38 Map map = options.asMap(luan); | |
| 39 String methodStr = getString(map,"method"); | |
| 40 if( methodStr != null ) { | |
| 41 methodStr = methodStr.toUpperCase(); | |
| 42 try { | |
| 43 this.method = Method.valueOf(methodStr); | |
| 44 } catch(IllegalArgumentException e) { | |
| 45 throw new LuanException( "invalid method: "+methodStr ); | |
| 46 } | |
| 47 } | |
| 723 | 48 Map headerMap = getMap(luan,map,"headers"); |
| 49 if( headerMap != null ) { | |
| 50 headers = new HashMap(); | |
| 51 for( Object hack : headerMap.entrySet() ) { | |
| 52 Map.Entry entry = (Map.Entry)hack; | |
| 53 String key = (String)entry.getKey(); | |
| 54 Object val = entry.getValue(); | |
| 55 String name = toHttpHeaderName(key); | |
| 56 if( val instanceof String ) { | |
| 57 headers.put(name,val); | |
| 58 } else { | |
| 59 if( !(val instanceof LuanTable) ) | |
| 60 throw new LuanException( "header '"+key+"' must be string or table" ); | |
| 61 LuanTable t = (LuanTable)val; | |
| 62 if( !t.isList() ) | |
| 63 throw new LuanException( "header '"+key+"' table must be list" ); | |
| 64 headers.put(name,t.asList()); | |
| 65 } | |
| 66 } | |
| 67 } | |
| 722 | 68 Map auth = getMap(luan,map,"authorization"); |
| 69 if( auth != null ) { | |
| 723 | 70 if( headers!=null && headers.containsKey("Authorization") ) |
| 71 throw new LuanException( "can't define authorization with header 'Authorization' defined" ); | |
| 722 | 72 String user = getString(auth,"user"); |
| 73 String password = getString(auth,"password"); | |
| 74 if( !auth.isEmpty() ) | |
| 75 throw new LuanException( "unrecognized authorization options: "+auth ); | |
| 76 StringBuilder sb = new StringBuilder(); | |
| 77 if( user != null ) | |
| 78 sb.append(user); | |
| 79 sb.append(':'); | |
| 80 if( password != null ) | |
| 81 sb.append(password); | |
| 82 String val = "Basic " + Base64.getEncoder().encodeToString(sb.toString().getBytes()); | |
| 83 if( headers == null ) | |
| 84 headers = new HashMap(); | |
| 85 headers.put("Authorization",val); | |
| 86 } | |
| 87 Map params = getMap(luan,map,"parameters"); | |
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88 String enctype = getString(map,"enctype"); |
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89 if( enctype != null ) { |
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90 if( !enctype.equals("multipart/form-data") ) |
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91 throw new LuanException( "unrecognized enctype: "+enctype ); |
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92 if( this.method!=Method.POST ) |
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93 throw new LuanException( "multipart/form-data can only be used with POST" ); |
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94 if( params==null ) |
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95 throw new LuanException( "multipart/form-data requires parameters" ); |
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96 if( params.isEmpty() ) |
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97 throw new LuanException( "multipart/form-data parameters can't be empty" ); |
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98 multipart = new MultipartClient(params); |
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99 } |
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100 else if( params != null ) { |
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101 StringBuilder sb = new StringBuilder(); |
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102 for( Object hack : params.entrySet() ) { |
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103 Map.Entry entry = (Map.Entry)hack; |
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104 String key = (String)entry.getKey(); |
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105 Object val = entry.getValue(); |
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106 String keyEnc = encode(key); |
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107 if( val instanceof String ) { |
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108 and(sb); |
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109 sb.append( keyEnc ).append( '=' ).append( encode((String)val) ); |
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110 } else { |
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111 if( !(val instanceof LuanTable) ) |
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112 throw new LuanException( "parameter '"+key+"' must be string or table" ); |
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113 LuanTable t = (LuanTable)val; |
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114 if( !t.isList() ) |
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115 throw new LuanException( "parameter '"+key+"' table must be list" ); |
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116 for( Object obj : t.asList() ) { |
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117 if( !(obj instanceof String) ) |
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118 throw new LuanException( "parameter '"+key+"' values must be strings" ); |
| 722 | 119 and(sb); |
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120 sb.append( keyEnc ).append( '=' ).append( encode((String)obj) ); |
| 722 | 121 } |
| 122 } | |
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123 } |
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124 if( this.method==Method.DELETE ) |
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125 throw new LuanException( "the DELETE method cannot take parameters" ); |
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126 if( this.method==Method.POST ) { |
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127 content = sb.toString(); |
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128 } else { // GET |
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129 String urlS = this.url.toString(); |
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130 if( urlS.indexOf('?') == -1 ) { |
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131 urlS += '?'; |
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132 } else { |
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133 urlS += '&'; |
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134 } |
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135 urlS += sb; |
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136 try { |
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137 this.url = new URL(urlS); |
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138 } catch(IOException e) { |
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139 throw new RuntimeException(e); |
| 722 | 140 } |
| 141 } | |
| 142 } | |
| 143 if( !map.isEmpty() ) | |
| 144 throw new LuanException( "unrecognized options: "+map ); | |
| 145 } | |
| 146 } | |
| 147 | |
| 723 | 148 public static String toHttpHeaderName(String luanName) { |
| 149 luanName = luanName.toLowerCase(); | |
| 150 StringBuilder buf = new StringBuilder(); | |
| 151 boolean capitalize = true; | |
| 152 char[] a = luanName.toCharArray(); | |
| 153 for( int i=0; i<a.length; i++ ) { | |
| 154 char c = a[i]; | |
| 155 if( c == '_' || c == '-' ) { | |
| 156 a[i] = '-'; | |
| 157 capitalize = true; | |
| 158 } else if( capitalize ) { | |
| 159 a[i] = Character.toUpperCase(c); | |
| 160 capitalize = false; | |
| 161 } | |
| 162 } | |
| 163 return String.valueOf(a); | |
| 164 } | |
| 165 | |
| 722 | 166 private static void and(StringBuilder sb) { |
| 167 if( sb.length() > 0 ) | |
| 168 sb.append('&'); | |
| 169 } | |
| 170 | |
| 171 private static String encode(String s) { | |
| 172 try { | |
| 173 return URLEncoder.encode(s,"UTF-8"); | |
| 174 } catch(UnsupportedEncodingException e) { | |
| 175 throw new RuntimeException(e); | |
| 176 } | |
| 177 } | |
| 178 | |
| 179 private static String getString(Map map,String key) throws LuanException { | |
| 180 Object val = map.remove(key); | |
| 181 if( val!=null && !(val instanceof String) ) | |
| 182 throw new LuanException( "parameter '"+key+"' must be a string" ); | |
| 183 return (String)val; | |
| 184 } | |
| 185 | |
| 186 private static LuanTable getTable(Map map,String key) throws LuanException { | |
| 187 Object val = map.remove(key); | |
| 188 if( val!=null && !(val instanceof LuanTable) ) | |
| 189 throw new LuanException( "parameter '"+key+"' must be a table" ); | |
| 190 return (LuanTable)val; | |
| 191 } | |
| 192 | |
| 193 private static Map getMap(LuanState luan,Map map,String key) throws LuanException { | |
| 194 LuanTable t = getTable(map,key); | |
| 195 return t==null ? null : t.asMap(luan); | |
| 196 } | |
| 197 | |
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198 @Override public InputStream inputStream() throws IOException, LuanException { |
| 722 | 199 URLConnection con = url.openConnection(); |
| 200 if( headers != null ) { | |
| 201 for( Object hack : headers.entrySet() ) { | |
| 202 Map.Entry entry = (Map.Entry)hack; | |
| 203 String key = (String)entry.getKey(); | |
| 204 Object val = entry.getValue(); | |
| 205 if( val instanceof String ) { | |
| 206 con.addRequestProperty(key,(String)val); | |
| 207 } else { | |
| 208 List list = (List)val; | |
| 209 for( Object obj : list ) { | |
| 210 con.addRequestProperty(key,(String)obj); | |
| 211 } | |
| 212 } | |
| 213 } | |
| 214 } | |
| 215 if( method==Method.GET ) { | |
| 216 return con.getInputStream(); | |
| 217 } | |
| 218 | |
| 219 HttpURLConnection httpCon = (HttpURLConnection)con; | |
| 220 | |
| 221 if( method==Method.DELETE ) { | |
| 222 httpCon.setRequestMethod("DELETE"); | |
| 223 return httpCon.getInputStream(); | |
| 224 } | |
| 225 | |
| 226 // POST | |
| 227 | |
| 228 // httpCon.setRequestProperty("Content-Type","application/x-www-form-urlencoded"); | |
| 229 httpCon.setDoOutput(true); | |
| 230 httpCon.setRequestMethod("POST"); | |
| 231 | |
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232 OutputStream out; |
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parents:
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233 if( multipart != null ) { |
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234 out = multipart.write(httpCon); |
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235 } else { |
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236 byte[] post = content.getBytes(); |
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237 // httpCon.setRequestProperty("Content-Length",Integer.toString(post.length)); |
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238 out = httpCon.getOutputStream(); |
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239 out.write(post); |
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240 } |
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241 out.flush(); |
| 722 | 242 try { |
| 243 try { | |
| 244 return httpCon.getInputStream(); | |
| 245 } catch(IOException e) { | |
| 246 InputStream is = httpCon.getErrorStream(); | |
| 247 if( is == null ) | |
| 248 throw e; | |
| 249 Reader in = new InputStreamReader(is); | |
| 250 String msg = Utils.readAll(in); | |
| 251 in.close(); | |
| 252 throw new LuanException(msg,e); | |
| 253 } | |
| 254 } finally { | |
| 255 out.close(); | |
| 256 } | |
| 257 } | |
| 258 | |
| 259 @Override public String to_string() { | |
| 260 return url.toString(); | |
| 261 } | |
| 262 | |
| 263 @Override public String to_uri_string() { | |
| 264 return url.toString(); | |
| 265 } | |
| 266 /* | |
| 267 public String post(String postS) throws IOException { | |
| 268 return new UrlCall(url).post(postS); | |
| 269 } | |
| 270 | |
| 271 @Override public LuanTable table() { | |
| 272 LuanTable tbl = super.table(); | |
| 273 try { | |
| 274 tbl.rawPut( "post", new LuanJavaFunction( | |
| 275 LuanUrl.class.getMethod( "post", String.class ), this | |
| 276 ) ); | |
| 277 } catch(NoSuchMethodException e) { | |
| 278 throw new RuntimeException(e); | |
| 279 } | |
| 280 return tbl; | |
| 281 } | |
| 282 */ | |
| 283 } |