+++ /dev/null
-// Copyright 2004 Adam Megacz, see the COPYING file for licensing [GPL]
-package org.ibex.net;
-
-import java.io.*;
-import java.util.*;
-import org.ibex.js.*;
-import org.ibex.util.*;
-import org.ibex.crypto.*;
-
-/**
- * An XML-RPC client implemented as a JavaScript Host Object. See the
- * Ibex spec for information on its behavior.
- *
- * NOTE: this client is EXTREMELY lenient in the responses it will
- * accept; there are many, many invalid responses that it will
- * successfully parse and return. Do NOT use this to determine the
- * validity of your server.
- *
- * This client conforms to <a href="http://www.xmlrpc.com/spec">The
- * XML-RPC Spec</a>, subject to these limitations:
- * <ol>
- * <li> XMLRPC cannot invoke methods that require a <base64/> argument
- * <li> if a return value contains a <base64/>, it will be returned as a string
- * <li> The decision to pass a number as <i4/> or <double/> is based
- * entirely on whether or not the argument is fractional. Thus, it
- * is impossible to pass a non-fractional number to an xmlrpc
- * method that insists on being called with a <double/> element. We
- * hope that most xml-rpc servers will be able to automatically
- * convert.
- * </ol>
- */
-public class XMLRPC extends JS {
-
- public XMLRPC(String url, String method) {
- this.http = url.startsWith("stdio:") ? HTTP.stdio : new HTTP(url);
- this.url = url;
- this.method = method;
- }
- public XMLRPC(String url, String method, XMLRPC httpSource) {
- this.http = httpSource.http; this.url = url; this.method = method; }
- public Object get(Object name) {
- return new XMLRPC(url, (method.equals("") ? "" : method + ".") + name.toString(), this); }
-
-
- /** this holds character content as we read it in -- since there is only one per instance, we don't support mixed content */
- protected AccessibleCharArrayWriter content = new AccessibleCharArrayWriter(100);
- protected String url = null; ///< the url to connect to
- protected String method = null; ///< the method name to invoke on the remove server
- protected HTTP http = null; ///< the HTTP connection to use
- private Hash tracker; ///< used to detect multi-ref data
- protected boolean fault = false; ///< True iff the return value is a fault (and should be thrown as an exception)
-
-
- /** The object stack. As we process xml elements, pieces of the
- * return value are pushed onto and popped off of this stack.
- *
- * The general protocol is that any time a <value> tag is
- * encountered, an empty String ("") is pushed onto the stack. If
- * the <value/> node has content (either an anonymous
- * string or some other XML node), that content replaces the
- * empty string.
- *
- * If an <array> tag is encountered, a null is pushed onto the
- * stack. When a </data> is encountered, we search back on the
- * stack to the last null, replace it with a NativeJSArray, and
- * insert into it all elements above it on the stack.
- *
- * If a <struct> tag is encountered, a JSect is pushed
- * onto the stack. If a <name> tag is encountered, its CDATA is
- * pushed onto the stack. When a </member> is encountered, the
- * name (second element on stack) and value (top of stack) are
- * popped off the stack and inserted into the struct (third
- * element on stack).
- */
- protected Vec objects = null;
-
-
- // Recieve ////////////////////////////////////////////////////////////////
-
- private class Helper extends XML {
- public Helper() { super(BUFFER_SIZE); }
-
- public void startElement(XML.Element c) {
- content.reset();
- //#switch(c.getLocalName())
- case "fault": fault = true;
- case "struct": objects.setElementAt(new JS.O(), objects.size() - 1);
- case "array": objects.setElementAt(null, objects.size() - 1);
- case "value": objects.addElement("");
- //#end
- }
-
- public void endElement(XML.Element c) {
- //#switch(c.getLocalName())
- case "int": objects.setElementAt(JS.N(Integer.parseInt(new String(content.getBuf(), 0, content.size()))), objects.size() - 1);
- case "i4": objects.setElementAt(JS.N(Integer.parseInt(new String(content.getBuf(), 0, content.size()))), objects.size() - 1);
- case "boolean": objects.setElementAt(content.getBuf()[0] == '1' ? JS.T : JS.F, objects.size() - 1);
- case "string": objects.setElementAt(JS.S(new String(content.getBuf(), 0, content.size())), objects.size() - 1);
- case "double": objects.setElementAt(JS.N(Double.parseDouble(new String(content.getBuf(), 0, content.size()))), objects.size() - 1);
- case "base64":
- objects.setElementAt(new Stream.ByteArray(Base64.decode(new String(content.getBuf(), 0, content.size())),
- null), objects.size() - 1);
- case "name": objects.addElement(JS.S(new String(content.getBuf(), 0, content.size())));
- case "value": if ("".equals(objects.lastElement()))
- objects.setElementAt(JS.S(new String(content.getBuf(), 0, content.size())), objects.size() - 1);
- case "dateTime.iso8601":
- String s = new String(content.getBuf(), 0, content.size());
-
- // strip whitespace
- int i=0;
- while(Character.isWhitespace(s.charAt(i))) i++;
- if (i > 0) s = s.substring(i);
-
- try {
- JSDate nd = new JSDate();
- double date = JSDate.date_msecFromDate(Double.valueOf(s.substring(0, 4)).doubleValue(),
- Double.valueOf(s.substring(4, 6)).doubleValue() - 1,
- Double.valueOf(s.substring(6, 8)).doubleValue(),
- Double.valueOf(s.substring(9, 11)).doubleValue(),
- Double.valueOf(s.substring(12, 14)).doubleValue(),
- Double.valueOf(s.substring(15, 17)).doubleValue(),
- (double)0
- );
- nd.setTime(JSDate.internalUTC(date));
- objects.setElementAt(nd, objects.size() - 1);
-
- } catch (Exception e) {
- throw new RuntimeException("ibex.net.rpc.xml.recieve.malformedDateTag" +
- "the server sent a <dateTime.iso8601> tag which was malformed: " + s);
- }
- case "member":
- JS memberValue = (JS) objects.elementAt(objects.size() - 1);
- String memberName = (String)objects.elementAt(objects.size() - 2);
- JS struct = (JS)objects.elementAt(objects.size() - 3);
- try {
- struct.put(JS.S(memberName), memberValue);
- } catch (JSExn e) {
- throw new Error("this should never happen");
- }
- objects.setSize(objects.size() - 2);
- case "data":
- int i;
- for(i=objects.size() - 1; objects.elementAt(i) != null; i--);
- JS arr = new JSArray();
- try {
- for(int j = i + 1; j<objects.size(); j++) arr.put(JS.N(j - i - 1), (JS)objects.elementAt(j));
- } catch (JSExn e) {
- throw new Error("this should never happen");
- }
- objects.setElementAt(arr, i);
- objects.setSize(i + 1);
- //#end
- content.reset();
- }
-
- public void characters(char[] ch, int start, int length) {
- try { content.write(ch, start, length); }
- catch (Exception e) {
- if (Log.on) Log.info(this, "Exception in XMLRPC.content() -- this should never happen");
- if (Log.on) Log.info(this, e);
- }
- }
-
- public void whitespace(char[] ch, int start, int length) {}
- }
-
- // Send ///////////////////////////////////////////////////////////////////////////
-
- protected String buildRequest(JS[] args) throws JSExn, IOException {
- StringBuffer content = new StringBuffer();
- content.append("\r\n");
- content.append("<?xml version=\"1.0\"?>\n");
- content.append(" <methodCall>\n");
- content.append(" <methodName>");
- content.append(method);
- content.append("</methodName>\n");
- content.append(" <params>\n");
- for(int i=0; i<args.length; i++) {
- content.append(" <param>\n");
- appendObject(args[i], content);
- content.append(" </param>\n");
- }
- content.append(" </params>\n");
- content.append(" </methodCall>");
- return content.toString();
- }
-
- /** Appends the XML-RPC representation of <code>o</code> to <code>sb</code> */
- void appendObject(JS o, StringBuffer sb) throws JSExn {
- // JS:FIXME: Update for new api
- throw new Error("FIXME");
- /*if (o == null) {
- throw new JSExn("attempted to send a null value via XML-RPC");
-
- } else if (o instanceof Number) {
- if ((double)((Number)o).intValue() == ((Number)o).doubleValue()) {
- sb.append(" <value><i4>");
- sb.append(((Number)o).intValue());
- sb.append("</i4></value>\n");
- } else {
- sb.append(" <value><double>");
- sb.append(o);
- sb.append("</double></value>\n");
- }
-
- } else if (o instanceof Boolean) {
- sb.append(" <value><boolean>");
- sb.append(((Boolean)o).booleanValue() ? "1" : "0");
- sb.append("</boolean></value>\n");
-
- } else if (o instanceof Stream) {
- try {
- sb.append(" <value><base64>\n");
- InputStream is = ((Stream)o).getInputStream();
- byte[] buf = new byte[54];
- while(true) {
- int numread = is.read(buf, 0, 54);
- if (numread == -1) break;
- byte[] writebuf = buf;
- if (numread < buf.length) {
- writebuf = new byte[numread];
- System.arraycopy(buf, 0, writebuf, 0, numread);
- }
- sb.append(" ");
- sb.append(new String(Base64.encode(writebuf)));
- sb.append("\n");
- }
- sb.append("\n </base64></value>\n");
- } catch (IOException e) {
- if (Log.on) Log.info(this, "caught IOException while attempting to send a ByteStream via XML-RPC");
- if (Log.on) Log.info(this, e);
- throw new JSExn("caught IOException while attempting to send a ByteStream via XML-RPC");
- }
-
- } else if (o instanceof String) {
- sb.append(" <value><string>");
- String s = (String)o;
- if (s.indexOf('<') == -1 && s.indexOf('&') == -1) {
- sb.append(s);
- } else {
- char[] cbuf = s.toCharArray();
- int oldi = 0, i=0;
- while(true) {
- while(i < cbuf.length && cbuf[i] != '<' && cbuf[i] != '&') i++;
- sb.append(cbuf, oldi, i - oldi);
- if (i >= cbuf.length) break;
- if (cbuf[i] == '<') sb.append("<");
- else if (cbuf[i] == '&') sb.append("&");
- i = oldi = i + 1;
- if (i >= cbuf.length) break;
- }
- }
- sb.append("</string></value>\n");
-
- } else if (o instanceof JSDate) {
- sb.append(" <value><dateTime.iso8601>");
- java.util.Date d = new java.util.Date(((JSDate)o).getRawTime());
- sb.append(d.getYear() + 1900);
- if (d.getMonth() + 1 < 10) sb.append('0');
- sb.append(d.getMonth() + 1);
- if (d.getDate() < 10) sb.append('0');
- sb.append(d.getDate());
- sb.append('T');
- if (d.getHours() < 10) sb.append('0');
- sb.append(d.getHours());
- sb.append(':');
- if (d.getMinutes() < 10) sb.append('0');
- sb.append(d.getMinutes());
- sb.append(':');
- if (d.getSeconds() < 10) sb.append('0');
- sb.append(d.getSeconds());
- sb.append("</dateTime.iso8601></value>\n");
-
- } else if (o instanceof JSArray) {
- if (tracker.get(o) != null) throw new JSExn("attempted to send multi-ref data structure via XML-RPC");
- tracker.put(o, Boolean.TRUE);
- sb.append(" <value><array><data>\n");
- JSArray a = (JSArray)o;
- for(int i=0; i<a.length(); i++) appendObject(a.elementAt(i), sb);
- sb.append(" </data></array></value>\n");
-
- } else if (o instanceof JS) {
- if (tracker.get(o) != null) throw new JSExn("attempted to send multi-ref data structure via XML-RPC");
- tracker.put(o, Boolean.TRUE);
- JS j = (JS)o;
- sb.append(" <value><struct>\n");
- Enumeration e = j.keys();
- while(e.hasMoreElements()) {
- Object key = e.nextElement();
- sb.append(" <member><name>" + key + "</name>\n");
- appendObject(j.get(key), sb);
- sb.append(" </member>\n");
- }
- sb.append(" </struct></value>\n");
-
- } else {
- throw new JSExn("attempt to send object of type " + o.getClass().getName() + " via XML-RPC");
-
- }*/
- }
-
-
- // Call Sequence //////////////////////////////////////////////////////////////////////////
-
- public final JS call(JS a0, JS a1, JS a2, JS[] rest, int nargs) throws JSExn {
- final JS[] args = new JS[nargs];
- for(int i=0;i<nargs;i++) args[i]= i==0?a0:i==1?a1:i==2?a2:rest[i-3];
- try {
- final JS.UnpauseCallback callback = JS.pause();
- new java.lang.Thread() { public void run() { call(callback,args); } }.start();
- return null; // doesn't matter since we paused
- } catch (NotPauseableException npe) {
- throw new JSExn("cannot invoke an XML-RPC call in the foreground thread");
- }
- }
-
- final void call(final JS.UnpauseCallback callback, JS[] args) {
- try {
- if (Log.rpc) Log.info(this, "call to " + url + " : " + method);
- if (tracker == null) tracker = new Hash();
- if (objects == null) objects = new Vec();
- String request = buildRequest(args);
- if (Log.rpc) Log.info(this, "send:\n" + request);
- InputStream is = http.POST("text/xml", request);
- BufferedReader br = new BufferedReader(new InputStreamReader(is));
- try {
- new Helper().parse(br);
- final JSExn exn = fault ? new JSExn(objects.elementAt(0).toString()) : null;
- final JS result = fault ? null : objects.size() == 0 ? null : (JS) objects.elementAt(0);
- Scheduler.add(new Task() { public void perform() throws JSExn { if(fault) callback.unpause(exn); else callback.unpause(result); }});
- } finally {
- tracker.clear();
- objects.setSize(0);
- }
- } catch (final JSExn e) {
- Scheduler.add(new Task() { public void perform() throws JSExn { callback.unpause(e); }});
- } catch (final IOException e) {
- final Exception e2 = e;
- Scheduler.add(new Task() { public void perform() throws JSExn { callback.unpause(new JSExn(e2.toString())); }});
- } catch (final XML.Exn e) {
- final Exception e2 = e;
- Scheduler.add(new Task() { public void perform() throws JSExn { callback.unpause(new JSExn(e2.toString())); }});
- }
- }
-}
projects / org.ibex.core.git / blobdiff