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Diffstat (limited to 'bundles/org.eclipse.wst.wsi/src/org/eclipse/wst/wsi/internal/core/util/HTTPUtils.java')
| -rw-r--r-- | bundles/org.eclipse.wst.wsi/src/org/eclipse/wst/wsi/internal/core/util/HTTPUtils.java | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/bundles/org.eclipse.wst.wsi/src/org/eclipse/wst/wsi/internal/core/util/HTTPUtils.java b/bundles/org.eclipse.wst.wsi/src/org/eclipse/wst/wsi/internal/core/util/HTTPUtils.java new file mode 100644 index 000000000..735e435e5 --- /dev/null +++ b/bundles/org.eclipse.wst.wsi/src/org/eclipse/wst/wsi/internal/core/util/HTTPUtils.java @@ -0,0 +1,182 @@ +/******************************************************************************* + * Copyright (c) 2002-2005 IBM Corporation and others. + * All rights reserved. This program and the accompanying materials + * are made available under the terms of the Eclipse Public License v1.0 + * which accompanies this distribution, and is available at + * http://www.eclipse.org/legal/epl-v10.html + * + * Contributors: + * IBM - Initial API and implementation + *******************************************************************************/ +package org.eclipse.wst.wsi.internal.core.util; + +import java.util.HashMap; +import java.util.Map; +import java.util.StringTokenizer; + +import org.eclipse.wst.wsi.internal.core.WSIException; + +/** + * Set of HTTPL related utilities. + * + * @version 1.0.1 + * @author Peter Brittenham + */ + +public final class HTTPUtils +{ + + /** + * Find the URL string in a HTTP POST header. + * @param httpPostHeader a HTTP POST header. + * @return the URL string in a HTTP POST header. + */ + public static String getURLString(String httpPostHeader) + { + String urlString = null; + int start, end; + + // If POST, then continue + if (httpPostHeader.startsWith("POST") || httpPostHeader.startsWith("GET")) + { + // Start after first space + start = httpPostHeader.indexOf(' ') + 1; + + // Look for next non-space character + while (httpPostHeader.charAt(start) == ' ') + start++; + + // Find next space character + end = httpPostHeader.indexOf(' ', start); + + // Get URL string which is located in between start and end + urlString = httpPostHeader.substring(start, end); + } + + // Else throw exception + else + { + throw new IllegalArgumentException( + "HTTP header does not contain POST data (was: " + httpPostHeader + ")"); + } + + // Return URL string + return urlString; + } + /** + * Utility to present HTTP header information as attribute-value pairs, + * based on ':' as attribute-value separator. + * @param httpHeaderString an HTTP header string. + * @param separators attribute-value separator list. + * @return HTTP header information as attribute-value pairs. + * @throws WSIException if unable to create HTTP header information + * as attribute-value pairs. + */ + public static Map getHttpHeaderTokens(String httpHeaderString, String separators) + throws WSIException + { + StringTokenizer tokenizer = new StringTokenizer(httpHeaderString, "\n\r\f"); + Map map = new HashMap(); + String name = null; + while (tokenizer.hasMoreTokens()) + { + String line = tokenizer.nextToken(); + int index = line.indexOf(separators); + if (index > 0 && index < line.length() - 1) + { + name = line.substring(0, index).toUpperCase(); + map.put(name, line.substring(index + 1).trim()); + } + else + { + if ((name != null) && (line.length()>0) && Character.isWhitespace(line.charAt(0))) + map.put(name, map.get(name) + " " + line.trim()); + } + } + return map; + } + + /** + * Utility to take sub attribute value from HTTP header + * @param httpHeaderString an HTTP header string. + * @param attributeName attribute name. + * @param subAttributeName sub attribute name. + * @return sub attribute value from HTTP header. + * @throws WSIException if unable to get sub attribute value from HTTP header. + */ + public static String getHttpHeaderSubAttribute(String httpHeaderString, + String attributeName, String subAttributeName) + throws WSIException + { + // get attribute value + String value = + (String) getHttpHeaderTokens(httpHeaderString,":").get(attributeName.toUpperCase()); + if(value != null) + { + // search sub attribute token + int idxQ = value.toUpperCase().indexOf(subAttributeName.toUpperCase()+"=\""); + int idx = value.toUpperCase().indexOf(subAttributeName.toUpperCase()+"="); + // if attribute is quoted + if (idxQ != -1) + { + idxQ += (subAttributeName+"=\"").length(); + int eIdxQ = value.indexOf("\"", idxQ); + if (eIdxQ != -1) + { + return value.substring(idxQ, eIdxQ); + } + else + { + return null; + } + } + // if attribute do not quoted + else if (idx != -1) + { + idx += (subAttributeName+"=").length(); + int eIdx = -1; + // find end space separator + if ((eIdx = value.indexOf(" ", idx)) != -1) + { + return value.substring(idx, eIdx); + } + // find coma separator + else if ((eIdx = value.indexOf(";", idx)) != -1) + { + return value.substring(idx, eIdx); + } + // this is last attribute + else + { + return value.substring(idx); + } + } + // if attribute do not found + else + { + return null; + } + } + return value; + } + + /** + * Utility to take attribute value from HTTP header + * @param httpHeaderString an HTTP header string. + * @param attributeName attribute name. + * @return attribute value from HTTP header. + * @throws WSIException if unable to get attribute value from HTTP header. + */ + public static String getHttpHeaderAttribute(String httpHeaderString, + String attributeName) + throws WSIException + { + String attributeValue = + (String) getHttpHeaderTokens(httpHeaderString,":").get(attributeName.toUpperCase()); + // get first token + if((attributeValue != null) && (attributeValue.indexOf(";") != -1)) { + attributeValue = attributeValue.substring(0, attributeValue.indexOf(";")); + } + return attributeValue; + } +} |