1 | package de.ugoe.cs.quest.plugin.mfc;
|
---|
2 |
|
---|
3 | import java.io.IOException;
|
---|
4 | import java.security.InvalidParameterException;
|
---|
5 | import java.util.HashMap;
|
---|
6 | import java.util.Iterator;
|
---|
7 | import java.util.LinkedList;
|
---|
8 | import java.util.List;
|
---|
9 | import java.util.ListIterator;
|
---|
10 | import java.util.Map;
|
---|
11 | import java.util.NoSuchElementException;
|
---|
12 |
|
---|
13 | import org.jdom.Document;
|
---|
14 | import org.jdom.Element;
|
---|
15 | import org.jdom.JDOMException;
|
---|
16 | import org.jdom.Namespace;
|
---|
17 | import org.jdom.input.SAXBuilder;
|
---|
18 |
|
---|
19 | import de.ugoe.cs.quest.eventcore.Event;
|
---|
20 | import de.ugoe.cs.quest.plugin.mfc.eventcore.MFCEventTarget;
|
---|
21 | import de.ugoe.cs.quest.plugin.mfc.eventcore.MFCEventType;
|
---|
22 | import de.ugoe.cs.quest.plugin.mfc.eventcore.WindowTree;
|
---|
23 | import de.ugoe.cs.quest.plugin.mfc.eventcore.WindowTreeNode;
|
---|
24 | import de.ugoe.cs.quest.plugin.mfc.eventcore.WindowsMessage;
|
---|
25 | import de.ugoe.cs.util.console.Console;
|
---|
26 |
|
---|
27 | /**
|
---|
28 | * <p>
|
---|
29 | * Translates sequences of windows messages into {@link WindowsEvent}s that can
|
---|
30 | * be used by the EventBench core libraries.
|
---|
31 | * </p>
|
---|
32 | *
|
---|
33 | * @author Steffen Herbold
|
---|
34 | * @version 1.0
|
---|
35 | */
|
---|
36 | public class EventGenerator {
|
---|
37 |
|
---|
38 | /**
|
---|
39 | * <p>
|
---|
40 | * Helper method that fetches the document node of an XML file.
|
---|
41 | * </p>
|
---|
42 | *
|
---|
43 | * @param filename
|
---|
44 | * name of the XML file
|
---|
45 | * @return the document node
|
---|
46 | */
|
---|
47 | private static Document getDocument(String filename) {
|
---|
48 | SAXBuilder builder = new SAXBuilder();
|
---|
49 | Document doc = null;
|
---|
50 |
|
---|
51 | try {
|
---|
52 | doc = builder.build(filename);
|
---|
53 | rulesNamespace = Namespace.getNamespace("ul:rules");
|
---|
54 | } catch (JDOMException e) {
|
---|
55 | Console.printerrln("Invalid rules file.");
|
---|
56 | e.printStackTrace();
|
---|
57 | } catch (IOException e) {
|
---|
58 | Console.printerrln("Invalid rules file.");
|
---|
59 | e.printStackTrace();
|
---|
60 | }
|
---|
61 |
|
---|
62 | return doc;
|
---|
63 | }
|
---|
64 |
|
---|
65 | /**
|
---|
66 | * <p>
|
---|
67 | * Name and path of the XML files containing the rules.
|
---|
68 | * </p>
|
---|
69 | */
|
---|
70 | private String rulesFile;
|
---|
71 |
|
---|
72 | /**
|
---|
73 | * <p>
|
---|
74 | * Iterator used for the current sequence.
|
---|
75 | * </p>
|
---|
76 | */
|
---|
77 | private ListIterator<WindowsMessage> sequenceIterator;
|
---|
78 |
|
---|
79 | /**
|
---|
80 | * <p>
|
---|
81 | * Token that is currently being generated.
|
---|
82 | * </p>
|
---|
83 | */
|
---|
84 | private Event currentToken;
|
---|
85 |
|
---|
86 | /**
|
---|
87 | * <p>
|
---|
88 | * Event type of the current token. Stored as a member to be able to update it during the parsing of the idinfo tag.
|
---|
89 | * </p>
|
---|
90 | */
|
---|
91 | private MFCEventType currentType;
|
---|
92 |
|
---|
93 | /**
|
---|
94 | * <p>
|
---|
95 | * Reference to the ul:rules namespace.
|
---|
96 | * </p>
|
---|
97 | */
|
---|
98 | private static Namespace rulesNamespace;
|
---|
99 |
|
---|
100 | /**
|
---|
101 | * <p>
|
---|
102 | * The name of the rule that is currently being evaluated.
|
---|
103 | * </p>
|
---|
104 | */
|
---|
105 | private String currentRuleName;
|
---|
106 |
|
---|
107 | /**
|
---|
108 | * <p>
|
---|
109 | * Internal message storage. Used to implement the
|
---|
110 | * <code>{@literal <store>}</code> and <code>{@literal <storeSeq>}</code>
|
---|
111 | * tags.
|
---|
112 | * </p>
|
---|
113 | */
|
---|
114 | private Map<String, Object> messageStorage;
|
---|
115 |
|
---|
116 | /**
|
---|
117 | * <p>
|
---|
118 | * Creates a new EventGenerator. Sets "rules/rules.xml" as default file for
|
---|
119 | * the rules.
|
---|
120 | * </p>
|
---|
121 | */
|
---|
122 | public EventGenerator() {
|
---|
123 | rulesFile = "rules/rules.xml";
|
---|
124 | }
|
---|
125 |
|
---|
126 | /**
|
---|
127 | * <p>
|
---|
128 | * Tries to match the rules to the given sequence to generate an
|
---|
129 | * {@link WindowsEvent}.
|
---|
130 | * </p>
|
---|
131 | * <p>
|
---|
132 | * The rules are matched the order, in which they are defined in the XML
|
---|
133 | * file. Therefore, the order of the rules in the file defines priorities,
|
---|
134 | * when multiple rules could be matched to the same sequence.
|
---|
135 | * </p>
|
---|
136 | *
|
---|
137 | * @param sequence
|
---|
138 | * sequence of message for which an event will be generated
|
---|
139 | * @return event that matches the messages; null, if no rule can be matched
|
---|
140 | */
|
---|
141 | @SuppressWarnings("unchecked")
|
---|
142 | public Event generateEvent(List<WindowsMessage> sequence) {
|
---|
143 | Document rulesDoc = getDocument(rulesFile);
|
---|
144 | Element rulesRoot = rulesDoc.getRootElement();
|
---|
145 |
|
---|
146 | List<Element> ruleElements = rulesRoot.getChildren("rule",
|
---|
147 | rulesNamespace);
|
---|
148 |
|
---|
149 | boolean isMatch = false;
|
---|
150 |
|
---|
151 | for (int ruleIndex = 0; ruleIndex < ruleElements.size() && !isMatch; ruleIndex++) {
|
---|
152 | Element currentRule = ruleElements.get(ruleIndex);
|
---|
153 | currentRuleName = currentRule.getAttributeValue("name");
|
---|
154 | currentType = new MFCEventType(currentRuleName);
|
---|
155 | currentToken = new Event(currentType);
|
---|
156 |
|
---|
157 | isMatch = true;
|
---|
158 | messageStorage = new HashMap<String, Object>();
|
---|
159 | sequenceIterator = sequence.listIterator();
|
---|
160 | List<Element> ruleChildrenMsg = currentRule.getChildren("msg",
|
---|
161 | rulesNamespace);
|
---|
162 |
|
---|
163 | int i = 0;
|
---|
164 | while (isMatch && i < ruleChildrenMsg.size()) {
|
---|
165 | Element messageElement = ruleChildrenMsg.get(i);
|
---|
166 | if ("true".equals(messageElement.getAttributeValue("multiple"))) {
|
---|
167 | Element nextMessageElement = null;
|
---|
168 | if (i + 1 < ruleChildrenMsg.size()) {
|
---|
169 | nextMessageElement = ruleChildrenMsg.get(i + 1);
|
---|
170 | }
|
---|
171 | try {
|
---|
172 | isMatch = matchMultipleMessages(messageElement,
|
---|
173 | nextMessageElement);
|
---|
174 | } catch (InvalidParameterException e) {
|
---|
175 | Console.printerrln(e.getMessage());
|
---|
176 | }
|
---|
177 | } else {
|
---|
178 | try {
|
---|
179 | isMatch = matchSingleMessage(messageElement);
|
---|
180 | } catch (InvalidParameterException e) {
|
---|
181 | Console.printerrln(e.getMessage());
|
---|
182 | }
|
---|
183 | }
|
---|
184 | i++;
|
---|
185 | }
|
---|
186 | if (isMatch) {
|
---|
187 | List<Element> ruleChildren = currentRule.getChildren();
|
---|
188 | for (Element genMsgElement : ruleChildren) {
|
---|
189 | if (genMsgElement.getName().equals("genMsg")) {
|
---|
190 | try {
|
---|
191 | generateReplayMessage(genMsgElement);
|
---|
192 | } catch (InvalidParameterException e) {
|
---|
193 | Console.printerrln(e.getMessage());
|
---|
194 | // TODO currentToken.invalidateReplay();
|
---|
195 | }
|
---|
196 | } else if (genMsgElement.getName().equals("genMsgSeq")) {
|
---|
197 | try {
|
---|
198 | generateReplaySequence(genMsgElement);
|
---|
199 | // TODO currentToken.invalidateReplay();
|
---|
200 | } catch (InvalidParameterException e) {
|
---|
201 | Console.printerrln(e.getMessage());
|
---|
202 | // TODO currentToken.invalidateReplay();
|
---|
203 | }
|
---|
204 | }
|
---|
205 | }
|
---|
206 | Element idinfoElement = currentRule.getChild("idinfo",
|
---|
207 | rulesNamespace);
|
---|
208 | if (idinfoElement != null) {
|
---|
209 | // cannot be empty if document is valid
|
---|
210 | List<Element> valueElements = idinfoElement.getChildren();
|
---|
211 | currentType.setInfo(getTermValue(null,
|
---|
212 | valueElements.get(0)));
|
---|
213 | }
|
---|
214 | Console.traceln(currentToken.getType().toString() + " matched");
|
---|
215 | } else {
|
---|
216 | currentToken = null;
|
---|
217 | }
|
---|
218 | }
|
---|
219 | if (!isMatch) {
|
---|
220 | Console.traceln("no match found for sequence: "
|
---|
221 | + sequence.toString());
|
---|
222 | }
|
---|
223 | return currentToken;
|
---|
224 | }
|
---|
225 |
|
---|
226 | // ////////////////////////////////////////////////////////////
|
---|
227 | // Helper functions for matching of events, i.e., msg-nodes //
|
---|
228 | // ////////////////////////////////////////////////////////////
|
---|
229 |
|
---|
230 | /**
|
---|
231 | * <p>
|
---|
232 | * Handles msg-nodes where multiple is not true, i.e., not a sequences.
|
---|
233 | * </p>
|
---|
234 | *
|
---|
235 | * @param messageElement
|
---|
236 | * {@link Element} representing the msg-node
|
---|
237 | * @return true, if a match is found; false otherwise
|
---|
238 | */
|
---|
239 | private boolean matchSingleMessage(Element messageElement) {
|
---|
240 | boolean isMatch = false;
|
---|
241 | WindowsMessage currentMessage = null;
|
---|
242 |
|
---|
243 | int type = Integer.parseInt(messageElement.getAttributeValue("type"));
|
---|
244 |
|
---|
245 | while (!isMatch && sequenceIterator.hasNext()) {
|
---|
246 | /*
|
---|
247 | * traverses the messages from the current position forward till a
|
---|
248 | * message with the correct type is found
|
---|
249 | */
|
---|
250 | currentMessage = sequenceIterator.next();
|
---|
251 | if (type == currentMessage.getType()) {
|
---|
252 | // message with the correct type found
|
---|
253 | // eval child nodes for further matching/storing
|
---|
254 | isMatch = evalEqualRestrictions(currentMessage, messageElement);
|
---|
255 |
|
---|
256 | // in case the message is a match, eval storage children
|
---|
257 | if (isMatch) {
|
---|
258 | handleStorage(messageElement, currentMessage);
|
---|
259 | currentToken.setTarget(new MFCEventTarget(currentMessage
|
---|
260 | .getXmlWindowDescription()));
|
---|
261 | // TODO currentToken.setTargetShort(currentMessage.getParentNames());
|
---|
262 | }
|
---|
263 | }
|
---|
264 | }
|
---|
265 |
|
---|
266 | return isMatch;
|
---|
267 | }
|
---|
268 |
|
---|
269 | /**
|
---|
270 | * <p>
|
---|
271 | * Handles msg-nodes where multiple is true, i.e., sequences. Requires
|
---|
272 | * knowledge about the next msg-node to determine the end of the sequence.
|
---|
273 | * </p>
|
---|
274 | *
|
---|
275 | * @param messageElement
|
---|
276 | * {@link Element} representing the msg-node
|
---|
277 | * @param nextMessageElement
|
---|
278 | * {@link Element} representing the next msg-node; {@code null}
|
---|
279 | * if the current node is the last one
|
---|
280 | * @return true, if a sequence is matched; false otherwise
|
---|
281 | */
|
---|
282 | private boolean matchMultipleMessages(Element messageElement,
|
---|
283 | Element nextMessageElement) {
|
---|
284 | boolean isMatch = false;
|
---|
285 | boolean isCurrentMatch = false;
|
---|
286 | boolean nextMatchFound = false;
|
---|
287 | WindowsMessage currentMessage = null;
|
---|
288 | WindowsMessage nextMessage = null;
|
---|
289 |
|
---|
290 | int type = Integer.parseInt(messageElement.getAttributeValue("type"));
|
---|
291 |
|
---|
292 | int nextType = -1;
|
---|
293 | if (nextMessageElement != null) {
|
---|
294 | nextType = Integer.parseInt(nextMessageElement
|
---|
295 | .getAttributeValue("type"));
|
---|
296 | }
|
---|
297 |
|
---|
298 | while (!nextMatchFound && sequenceIterator.hasNext()) {
|
---|
299 | currentMessage = sequenceIterator.next();
|
---|
300 | if (type == currentMessage.getType()) {
|
---|
301 | isCurrentMatch = evalEqualRestrictions(currentMessage,
|
---|
302 | messageElement);
|
---|
303 | isMatch = isMatch || isCurrentMatch;
|
---|
304 |
|
---|
305 | if (isCurrentMatch) {
|
---|
306 | handleStorage(messageElement, currentMessage);
|
---|
307 | currentToken.setTarget(new MFCEventTarget(currentMessage
|
---|
308 | .getXmlWindowDescription()));
|
---|
309 | // TODO currentToken.setTargetShort(currentMessage.getParentNames());
|
---|
310 | }
|
---|
311 | }
|
---|
312 | if (nextMessageElement != null && isMatch) {
|
---|
313 | // peek next message to check if the sequence ends and the next
|
---|
314 | // match is found
|
---|
315 | if (!sequenceIterator.hasNext()) {
|
---|
316 | return false; // sequence is over, but not all messages are
|
---|
317 | // found
|
---|
318 | }
|
---|
319 | nextMessage = sequenceIterator.next();
|
---|
320 | sequenceIterator.previous();
|
---|
321 |
|
---|
322 | if (nextType == nextMessage.getType()) {
|
---|
323 | nextMatchFound = evalEqualRestrictions(nextMessage,
|
---|
324 | nextMessageElement);
|
---|
325 | }
|
---|
326 |
|
---|
327 | }
|
---|
328 | }
|
---|
329 |
|
---|
330 | return isMatch;
|
---|
331 | }
|
---|
332 |
|
---|
333 | /**
|
---|
334 | * <p>
|
---|
335 | * Handles equals-nodes.
|
---|
336 | * </p>
|
---|
337 | *
|
---|
338 | * @param currentMessage
|
---|
339 | * {@link Element} representing the msg-node the equals-node
|
---|
340 | * belongs to
|
---|
341 | * @param messageElement
|
---|
342 | * {@link Element} representing the equals-node to be evaluated
|
---|
343 | * @return true, if constraint is fulfilled; false otherwise
|
---|
344 | */
|
---|
345 | @SuppressWarnings("unchecked")
|
---|
346 | private boolean evalEqualRestrictions(WindowsMessage currentMessage,
|
---|
347 | Element messageElement) {
|
---|
348 | boolean isMatch = true;
|
---|
349 | for (Element childElement : (List<Element>) messageElement.getChildren(
|
---|
350 | "equals", rulesNamespace)) {
|
---|
351 | List<Element> termElements = childElement.getChildren();
|
---|
352 | // the size 2 of termElements is guaranteed by the XML schema
|
---|
353 | String value1 = getTermValue(currentMessage, termElements.get(0));
|
---|
354 | String value2 = getTermValue(currentMessage, termElements.get(1));
|
---|
355 | if (value1 == null || value2 == null) {
|
---|
356 | isMatch = false;
|
---|
357 | } else {
|
---|
358 | isMatch = isMatch && value1.equals(value2);
|
---|
359 | }
|
---|
360 | }
|
---|
361 | for (Element childElement : (List<Element>) messageElement.getChildren(
|
---|
362 | "equalsSeq", rulesNamespace)) {
|
---|
363 | List<Element> termElements = childElement.getChildren();
|
---|
364 | List<String> values1 = getTermValueSeq(termElements.get(0));
|
---|
365 | List<String> values2 = getTermValueSeq(termElements.get(0));
|
---|
366 | if (values1 == null || values2 == null) {
|
---|
367 | isMatch = false;
|
---|
368 | } else {
|
---|
369 | isMatch = isMatch && values1.equals(values2);
|
---|
370 | }
|
---|
371 | }
|
---|
372 | return isMatch;
|
---|
373 | }
|
---|
374 |
|
---|
375 | /**
|
---|
376 | * <p>
|
---|
377 | * Handles store-nodes and storeSeq-nodes.
|
---|
378 | * </p>
|
---|
379 | *
|
---|
380 | * @param messageElement
|
---|
381 | * {@link Element} representing the msg-node that is currently
|
---|
382 | * being evaluated
|
---|
383 | * @param currentMessage
|
---|
384 | * current message in the message sequence that is matched; this
|
---|
385 | * is the message that is stored
|
---|
386 | */
|
---|
387 | @SuppressWarnings("unchecked")
|
---|
388 | private void handleStorage(Element messageElement,
|
---|
389 | WindowsMessage currentMessage) {
|
---|
390 | for (Element childElement : (List<Element>) messageElement.getChildren(
|
---|
391 | "store", rulesNamespace)) {
|
---|
392 | String identifier = childElement.getAttributeValue("var");
|
---|
393 | messageStorage.put(identifier, currentMessage);
|
---|
394 | resolveHwnd(currentMessage, childElement);
|
---|
395 | }
|
---|
396 | for (Element childElement : (List<Element>) messageElement.getChildren(
|
---|
397 | "storeSeq", rulesNamespace)) {
|
---|
398 | String identifier = childElement.getAttributeValue("varSeq");
|
---|
399 | Object tmp = messageStorage.get(identifier);
|
---|
400 | List<WindowsMessage> storedSequence;
|
---|
401 | if (tmp == null || tmp instanceof WindowsMessage) {
|
---|
402 | storedSequence = new LinkedList<WindowsMessage>();
|
---|
403 | storedSequence.add(currentMessage);
|
---|
404 | messageStorage.put(identifier, storedSequence);
|
---|
405 | } else if (tmp instanceof List<?>) {
|
---|
406 | storedSequence = (List<WindowsMessage>) tmp;
|
---|
407 | storedSequence.add(currentMessage);
|
---|
408 | messageStorage.put(identifier, storedSequence);
|
---|
409 | }
|
---|
410 | resolveHwnd(currentMessage, childElement);
|
---|
411 | }
|
---|
412 | }
|
---|
413 |
|
---|
414 | /**
|
---|
415 | * <p>
|
---|
416 | * Resolves a parameter that contains a HWND of a message to the target
|
---|
417 | * string of the HWND and stores it.
|
---|
418 | * </p>
|
---|
419 | *
|
---|
420 | * @param currentMessage
|
---|
421 | * message whose HWND is resolved
|
---|
422 | * @param childElement
|
---|
423 | * child element of the store node that represents the resolve
|
---|
424 | */
|
---|
425 | @SuppressWarnings("unchecked")
|
---|
426 | private void resolveHwnd(WindowsMessage currentMessage, Element childElement) {
|
---|
427 | List<Element> resolveElements = childElement.getChildren("resolveHwnd",
|
---|
428 | rulesNamespace);
|
---|
429 | for (Element resolveElement : resolveElements) {
|
---|
430 | String param = resolveElement.getAttributeValue("param");
|
---|
431 | String storeParam = resolveElement.getAttributeValue("storeParam");
|
---|
432 | int paramHwnd = Integer
|
---|
433 | .parseInt(currentMessage.getParameter(param));
|
---|
434 | WindowTreeNode node = WindowTree.getInstance().find(paramHwnd);
|
---|
435 | if (node != null) {
|
---|
436 | currentMessage.addParameter(storeParam,
|
---|
437 | node.xmlRepresentation());
|
---|
438 | }
|
---|
439 | }
|
---|
440 | }
|
---|
441 |
|
---|
442 | // /////////////////////////////////////////////////////
|
---|
443 | // Helper functions for generating the replay, i.e.,
|
---|
444 | // parsing of genMsg und genMsgSeq-nodes
|
---|
445 | // /////////////////////////////////////////////////////
|
---|
446 |
|
---|
447 | /**
|
---|
448 | * <p>
|
---|
449 | * Handles genMsg-nodes and adds the replay to the {@link Event} that is
|
---|
450 | * generated.
|
---|
451 | * </p>
|
---|
452 | *
|
---|
453 | * @param genMsgElement
|
---|
454 | * {@link Element} representing the genMsg-node
|
---|
455 | */
|
---|
456 | @SuppressWarnings("unchecked")
|
---|
457 | private void generateReplayMessage(Element genMsgElement) {
|
---|
458 | List<Element> genMsgChildren = genMsgElement.getChildren();
|
---|
459 | WindowsMessage generatedMessage = null;
|
---|
460 | if (genMsgChildren.size() == 1) { // replay stored message without
|
---|
461 | // change
|
---|
462 | String obj = genMsgChildren.get(0).getAttributeValue("obj");
|
---|
463 | generatedMessage = getStoredMessageVariable(null, obj);
|
---|
464 | } else { // generate message according to the rule
|
---|
465 | for (Element genMsgChild : genMsgChildren) {
|
---|
466 | Element termElement = (Element) genMsgChild.getChildren()
|
---|
467 | .get(0);
|
---|
468 | if (genMsgChild.getName().equals("type")) {
|
---|
469 | try {
|
---|
470 | int msgType = Integer.parseInt(getTermValue(null,
|
---|
471 | termElement));
|
---|
472 | generatedMessage = new WindowsMessage(msgType);
|
---|
473 | } catch (NumberFormatException e) {
|
---|
474 | throw new InvalidParameterException(
|
---|
475 | "Failure generating replay sequence for rule "
|
---|
476 | + currentRuleName
|
---|
477 | + ": Defined type is not an integer.");
|
---|
478 | }
|
---|
479 | } else if (genMsgChild.getName().equals("target")) {
|
---|
480 | String targetString = getTermValue(null, termElement);
|
---|
481 | generatedMessage.setXmlWindowDescription(targetString);
|
---|
482 | } else if (genMsgChild.getName().equals("LPARAM")) {
|
---|
483 | String paramValueStr = getTermValue(null, termElement);
|
---|
484 | long paramValue = 0;
|
---|
485 | Element loword = genMsgChild.getChild("LOWORD",
|
---|
486 | rulesNamespace);
|
---|
487 | if (loword != null) {
|
---|
488 | paramValue = loHiWord(genMsgChild);
|
---|
489 | generatedMessage.setLPARAM(paramValue);
|
---|
490 | } else {
|
---|
491 | try {
|
---|
492 | paramValue = Integer.parseInt(paramValueStr);
|
---|
493 | generatedMessage.setLPARAM(paramValue);
|
---|
494 | } catch (NumberFormatException e) {
|
---|
495 | generatedMessage
|
---|
496 | .setLPARAMasWindowDesc(paramValueStr);
|
---|
497 | }
|
---|
498 | }
|
---|
499 | } else if (genMsgChild.getName().equals("WPARAM")) {
|
---|
500 | String paramValueStr = getTermValue(null, termElement);
|
---|
501 | long paramValue = 0;
|
---|
502 | Element loword = genMsgChild.getChild("LOWORD",
|
---|
503 | rulesNamespace);
|
---|
504 | if (loword != null) {
|
---|
505 | paramValue = loHiWord(genMsgChild);
|
---|
506 | generatedMessage.setWPARAM(paramValue);
|
---|
507 | } else {
|
---|
508 | try {
|
---|
509 | paramValue = Integer.parseInt(paramValueStr);
|
---|
510 | generatedMessage.setWPARAM(paramValue);
|
---|
511 | } catch (NumberFormatException e) {
|
---|
512 | generatedMessage
|
---|
513 | .setWPARAMasWindowDesc(paramValueStr);
|
---|
514 | }
|
---|
515 | }
|
---|
516 | }
|
---|
517 | }
|
---|
518 | }
|
---|
519 | if (generatedMessage != null) {
|
---|
520 | int delay = Integer.parseInt(genMsgElement
|
---|
521 | .getAttributeValue("delay"));
|
---|
522 | generatedMessage.setDelay(delay);
|
---|
523 | } else {
|
---|
524 | // TODO currentToken.invalidateReplay();
|
---|
525 | }
|
---|
526 | currentToken.addReplayable(generatedMessage);
|
---|
527 | }
|
---|
528 |
|
---|
529 | /**
|
---|
530 | * Handles genMsgSeq-nodes and adds the replay to the {@link Event} that is
|
---|
531 | * generated.</p>
|
---|
532 | *
|
---|
533 | * @param genMsgElement
|
---|
534 | * {@link Element} representing the genMsgSeq-node.
|
---|
535 | */
|
---|
536 | @SuppressWarnings("unchecked")
|
---|
537 | private void generateReplaySequence(Element genMsgElement) {
|
---|
538 | List<Element> genMsgSeqChildren = genMsgElement.getChildren();
|
---|
539 | List<WindowsMessage> generatedMessageSeq = new LinkedList<WindowsMessage>();
|
---|
540 | if (genMsgSeqChildren.size() == 1) {
|
---|
541 | String obj = genMsgSeqChildren.get(0).getAttributeValue("seqObj");
|
---|
542 | generatedMessageSeq = getStoredSeqVariable(obj);
|
---|
543 | } else {
|
---|
544 | boolean msgsGenerated = false;
|
---|
545 | int constMsgType = 0;
|
---|
546 | for (Element genMsgSeqChild : genMsgSeqChildren) {
|
---|
547 | Element termElement = (Element) genMsgSeqChild.getChildren()
|
---|
548 | .get(0);
|
---|
549 | if (genMsgSeqChild.getName().equals("type")) {
|
---|
550 | // note: cannot easily be extracted because of mulitple
|
---|
551 | // return values
|
---|
552 | if (termElement.getName().equals("seqValue")) {
|
---|
553 | String obj = termElement.getAttributeValue("seqObj");
|
---|
554 | List<WindowsMessage> seqVar = getStoredSeqVariable(obj);
|
---|
555 | for (WindowsMessage msg : seqVar) {
|
---|
556 | generatedMessageSeq.add(new WindowsMessage(msg
|
---|
557 | .getType()));
|
---|
558 | }
|
---|
559 | msgsGenerated = true;
|
---|
560 | } else { // constValue type
|
---|
561 | constMsgType = Integer.parseInt(getTermValue(null,
|
---|
562 | termElement));
|
---|
563 | }
|
---|
564 | } else if (genMsgSeqChild.getName().equals("target")) {
|
---|
565 | msgsGenerated = createSequenceTarget(generatedMessageSeq,
|
---|
566 | msgsGenerated, constMsgType, termElement);
|
---|
567 | } else if (genMsgSeqChild.getName().equals("LPARAM")) {
|
---|
568 | msgsGenerated = createSequenceLParam(generatedMessageSeq,
|
---|
569 | msgsGenerated, constMsgType, termElement);
|
---|
570 | } else if (genMsgSeqChild.getName().equals("WPARAM")) {
|
---|
571 | msgsGenerated = createSequenceWParam(generatedMessageSeq,
|
---|
572 | msgsGenerated, constMsgType, termElement);
|
---|
573 | }
|
---|
574 | }
|
---|
575 | }
|
---|
576 | currentToken.addReplayableSequence(generatedMessageSeq);
|
---|
577 | }
|
---|
578 |
|
---|
579 | /**
|
---|
580 | * <p>
|
---|
581 | * Creates the targets for replay sequences generated with genMsgSeq-nodes.
|
---|
582 | * </p>
|
---|
583 | *
|
---|
584 | * @param generatedMessageSeq
|
---|
585 | * list of the messages that is being generated
|
---|
586 | * @param msgsGenerated
|
---|
587 | * boolean stating if the list of messages is already generated
|
---|
588 | * or if the generation has to be handles by this method
|
---|
589 | * @param constMsgType
|
---|
590 | * a constant message type that is used for message generation,
|
---|
591 | * in case the list of message is generated by this method
|
---|
592 | * @param termElement
|
---|
593 | * {@link Element} representing the term-node describing the
|
---|
594 | * target
|
---|
595 | * @return true, if the list of message is generated after calling this
|
---|
596 | * method; false otherwise
|
---|
597 | * @throws NoSuchElementException
|
---|
598 | * thrown if the seqVar referred to in the termElement contains
|
---|
599 | * a different number of messages than is contained in
|
---|
600 | * messageSeq
|
---|
601 | */
|
---|
602 | private boolean createSequenceTarget(
|
---|
603 | List<WindowsMessage> generatedMessageSeq, boolean msgsGenerated,
|
---|
604 | int constMsgType, Element termElement)
|
---|
605 | throws NoSuchElementException {
|
---|
606 | Iterator<WindowsMessage> seqIterator = generatedMessageSeq.iterator();
|
---|
607 | if (termElement.getName().equals("seqValue")) {
|
---|
608 | String obj = termElement.getAttributeValue("seqObj");
|
---|
609 | List<WindowsMessage> seqVar = getStoredSeqVariable(obj);
|
---|
610 | if (msgsGenerated && seqVar.size() != generatedMessageSeq.size()) {
|
---|
611 | throw new InvalidParameterException(
|
---|
612 | "Failure generating replay sequence for rule "
|
---|
613 | + currentRuleName
|
---|
614 | + ": One or more of the sequence variables used to generate a sequence have different lenghts.");
|
---|
615 | }
|
---|
616 | for (WindowsMessage msg : seqVar) {
|
---|
617 | WindowsMessage currentSeqMsg = getCurrentSeqMsg(
|
---|
618 | generatedMessageSeq, msgsGenerated, constMsgType,
|
---|
619 | seqIterator);
|
---|
620 | String targetString = msg.getParameter(termElement
|
---|
621 | .getAttributeValue("param"));
|
---|
622 | currentSeqMsg.setXmlWindowDescription(targetString);
|
---|
623 | }
|
---|
624 | msgsGenerated = true;
|
---|
625 | } else { // const value
|
---|
626 | throw new AssertionError("target must be a sequence variable!");
|
---|
627 | /*
|
---|
628 | * If target would not be a variable, the message-elements could not
|
---|
629 | * yet be created and the whole sequence might be broken. If this is
|
---|
630 | * to be changed, createSequenceLParam and createSequenceWParam need
|
---|
631 | * to be addepted, too.
|
---|
632 | */
|
---|
633 | }
|
---|
634 | return msgsGenerated;
|
---|
635 | }
|
---|
636 |
|
---|
637 | /**
|
---|
638 | * <p>
|
---|
639 | * Creates the LPARAMs for replay sequences generated with genMsgSeq-nodes.
|
---|
640 | * </p>
|
---|
641 | *
|
---|
642 | * @param generatedMessageSeq
|
---|
643 | * list of the messages that is being generated
|
---|
644 | * @param msgsGenerated
|
---|
645 | * boolean stating if the list of messages is already generated
|
---|
646 | * or if the generation has to be handles by this method
|
---|
647 | * @param constMsgType
|
---|
648 | * a constant message type that is used for message generation,
|
---|
649 | * in case the list of message is generated by this method
|
---|
650 | * @param termElement
|
---|
651 | * {@link Element} representing the term-node describing the
|
---|
652 | * LPARAM
|
---|
653 | * @return true, if the list of message is generated after calling this
|
---|
654 | * method; false otherwise
|
---|
655 | * @throws NoSuchElementException
|
---|
656 | * thrown if the seqVar referred to in the termElement contains
|
---|
657 | * a different number of messages than is contained in
|
---|
658 | * messageSeq
|
---|
659 | */
|
---|
660 | private boolean createSequenceLParam(
|
---|
661 | List<WindowsMessage> generatedMessageSeq, boolean msgsGenerated,
|
---|
662 | int constMsgType, Element termElement)
|
---|
663 | throws NoSuchElementException {
|
---|
664 | Iterator<WindowsMessage> seqIterator = generatedMessageSeq.iterator();
|
---|
665 | if (termElement.getName().equals("seqValue")) {
|
---|
666 | String obj = termElement.getAttributeValue("seqObj");
|
---|
667 | List<WindowsMessage> seqVar = getStoredSeqVariable(obj);
|
---|
668 | if (msgsGenerated && seqVar.size() != generatedMessageSeq.size()) {
|
---|
669 | throw new InvalidParameterException(
|
---|
670 | "Failure generating replay sequence for rule "
|
---|
671 | + currentRuleName
|
---|
672 | + ": One or more of the sequence variables used to generate a sequence have different lenghts.");
|
---|
673 | }
|
---|
674 | for (WindowsMessage msg : seqVar) {
|
---|
675 | WindowsMessage currentSeqMsg = getCurrentSeqMsg(
|
---|
676 | generatedMessageSeq, msgsGenerated, constMsgType,
|
---|
677 | seqIterator);
|
---|
678 | String paramValueStr = msg.getParameter(termElement
|
---|
679 | .getAttributeValue("param"));
|
---|
680 | int paramValue = 0;
|
---|
681 | try {
|
---|
682 | paramValue = Integer.parseInt(paramValueStr);
|
---|
683 | currentSeqMsg.setLPARAM(paramValue);
|
---|
684 | } catch (NumberFormatException e) {
|
---|
685 | currentSeqMsg.setLPARAMasWindowDesc(paramValueStr);
|
---|
686 | }
|
---|
687 | }
|
---|
688 | if (seqIterator.hasNext()) {
|
---|
689 | // the first seq-var has a different number of elements than the
|
---|
690 | // current one
|
---|
691 | throw new NoSuchElementException();
|
---|
692 | }
|
---|
693 | msgsGenerated = true;
|
---|
694 | } else { // const value
|
---|
695 | int paramValue = Integer.parseInt(getTermValue(null, termElement));
|
---|
696 | while (seqIterator.hasNext()) {
|
---|
697 | seqIterator.next().setLPARAM(paramValue);
|
---|
698 | }
|
---|
699 | }
|
---|
700 | return msgsGenerated;
|
---|
701 | }
|
---|
702 |
|
---|
703 | /**
|
---|
704 | * <p>
|
---|
705 | * Creates the WPARAMs for replay sequences generated with genMsgSeq-nodes.
|
---|
706 | * </p>
|
---|
707 | *
|
---|
708 | * @param generatedMessageSeq
|
---|
709 | * list of the messages that is being generated
|
---|
710 | * @param msgsGenerated
|
---|
711 | * boolean stating if the list of messages is already generated
|
---|
712 | * or if the generation has to be handles by this method
|
---|
713 | * @param constMsgType
|
---|
714 | * a constant message type that is used for message generation,
|
---|
715 | * in case the list of message is generated by this method
|
---|
716 | * @param termElement
|
---|
717 | * {@link Element} representing the term-node describing the
|
---|
718 | * WPARAM
|
---|
719 | * @return true, if the list of message is generated after calling this
|
---|
720 | * method; false otherwise
|
---|
721 | * @throws NoSuchElementException
|
---|
722 | * thrown if the seqVar referred to in the termElement contains
|
---|
723 | * a different number of messages than is contained in
|
---|
724 | * messageSeq
|
---|
725 | */
|
---|
726 | private boolean createSequenceWParam(
|
---|
727 | List<WindowsMessage> generatedMessageSeq, boolean msgsGenerated,
|
---|
728 | int constMsgType, Element termElement)
|
---|
729 | throws NoSuchElementException {
|
---|
730 | Iterator<WindowsMessage> seqIterator = generatedMessageSeq.iterator();
|
---|
731 | if (termElement.getName().equals("seqValue")) {
|
---|
732 | String obj = termElement.getAttributeValue("seqObj");
|
---|
733 | List<WindowsMessage> seqVar = getStoredSeqVariable(obj);
|
---|
734 | if (msgsGenerated && seqVar.size() != generatedMessageSeq.size()) {
|
---|
735 | throw new InvalidParameterException(
|
---|
736 | "Failure generating replay sequence for rule "
|
---|
737 | + currentRuleName
|
---|
738 | + ": One or more of the sequence variables used to generate a sequence have different lenghts.");
|
---|
739 | }
|
---|
740 | for (WindowsMessage msg : seqVar) {
|
---|
741 | WindowsMessage currentSeqMsg = getCurrentSeqMsg(
|
---|
742 | generatedMessageSeq, msgsGenerated, constMsgType,
|
---|
743 | seqIterator);
|
---|
744 | String paramValueStr = msg.getParameter(termElement
|
---|
745 | .getAttributeValue("param"));
|
---|
746 | int paramValue = 0;
|
---|
747 | try {
|
---|
748 | paramValue = Integer.parseInt(paramValueStr);
|
---|
749 | currentSeqMsg.setWPARAM(paramValue);
|
---|
750 | } catch (NumberFormatException e) {
|
---|
751 | currentSeqMsg.setWPARAMasWindowDesc(paramValueStr);
|
---|
752 | }
|
---|
753 | }
|
---|
754 | if (seqIterator.hasNext()) {
|
---|
755 | // the first seq-var has a different number of elements than the
|
---|
756 | // current one
|
---|
757 | throw new NoSuchElementException();
|
---|
758 | }
|
---|
759 | msgsGenerated = true;
|
---|
760 | } else { // const value
|
---|
761 | int paramValue = Integer.parseInt(getTermValue(null, termElement));
|
---|
762 | while (seqIterator.hasNext()) {
|
---|
763 | seqIterator.next().setWPARAM(paramValue);
|
---|
764 | }
|
---|
765 | }
|
---|
766 | return msgsGenerated;
|
---|
767 | }
|
---|
768 |
|
---|
769 | /**
|
---|
770 | * <p>
|
---|
771 | * If a message sequence is already generated, i.e., msgsGenerated is true,
|
---|
772 | * the seqIterator is used to iterate through these messages and return the
|
---|
773 | * current one. If the message sequence is not yet generated, i.e.,
|
---|
774 | * msgsGenerated is false, the message sequence is generated on the fly
|
---|
775 | * during each call of this message and the newly generated messages are
|
---|
776 | * returned.
|
---|
777 | * </p>
|
---|
778 | *
|
---|
779 | * @param generatedMessageSeq
|
---|
780 | * message sequence
|
---|
781 | * @param msgsGenerated
|
---|
782 | * indicates if generatedMessageSeq is already generated or has
|
---|
783 | * to be generated on the fly by this method
|
---|
784 | * @param constMsgType
|
---|
785 | * type of the message to be used for message generation
|
---|
786 | * @param seqIterator
|
---|
787 | * iterates through an already generated message sequence; must
|
---|
788 | * not be {@code null}, if msgsGenerated is true
|
---|
789 | * @return current message
|
---|
790 | */
|
---|
791 | private WindowsMessage getCurrentSeqMsg(
|
---|
792 | List<WindowsMessage> generatedMessageSeq, boolean msgsGenerated,
|
---|
793 | int constMsgType, Iterator<WindowsMessage> seqIterator) {
|
---|
794 | WindowsMessage currentSeqMsg = null;
|
---|
795 | if (msgsGenerated) {
|
---|
796 | currentSeqMsg = seqIterator.next();
|
---|
797 | } else {
|
---|
798 | currentSeqMsg = new WindowsMessage(constMsgType);
|
---|
799 | generatedMessageSeq.add(currentSeqMsg);
|
---|
800 | }
|
---|
801 | return currentSeqMsg;
|
---|
802 | }
|
---|
803 |
|
---|
804 | // ////////////////////////////
|
---|
805 | // General helper functions //
|
---|
806 | // ////////////////////////////
|
---|
807 |
|
---|
808 | /**
|
---|
809 | * <p>
|
---|
810 | * Retrieves a message from the storage for, e.g., comparison or replay.
|
---|
811 | * "this" is used to refer to the current message.
|
---|
812 | * </p>
|
---|
813 | *
|
---|
814 | * @param currentMessage
|
---|
815 | * current message during the parsing; passed to handle "this"
|
---|
816 | * @param obj
|
---|
817 | * object identifier in the storage
|
---|
818 | * @return message retrieved from the storage
|
---|
819 | * @throws InvalidParameterException
|
---|
820 | * thrown in case of invalid uses of "this" or if no message
|
---|
821 | * with the identifier obj is found in the storage
|
---|
822 | */
|
---|
823 | private WindowsMessage getStoredMessageVariable(
|
---|
824 | WindowsMessage currentMessage, String obj)
|
---|
825 | throws InvalidParameterException {
|
---|
826 | WindowsMessage varMessage = null;
|
---|
827 | if (obj.equals("this")) {
|
---|
828 | if (currentMessage == null) {
|
---|
829 | throw new InvalidParameterException(
|
---|
830 | "Failure obtaining term value for rule "
|
---|
831 | + currentRuleName
|
---|
832 | + ": \"this\" is not a valid name for generating runtime messages.");
|
---|
833 | }
|
---|
834 | varMessage = currentMessage;
|
---|
835 | } else {
|
---|
836 | Object tmp = messageStorage.get(obj);
|
---|
837 | if (tmp instanceof WindowsMessage) {
|
---|
838 | varMessage = (WindowsMessage) tmp;
|
---|
839 | } else {
|
---|
840 | throw new InvalidParameterException(
|
---|
841 | "Failure obtaining term value for rule "
|
---|
842 | + currentRuleName + ": No message \"" + obj
|
---|
843 | + "\" stored.");
|
---|
844 | }
|
---|
845 | }
|
---|
846 | return varMessage;
|
---|
847 | }
|
---|
848 |
|
---|
849 | /**
|
---|
850 | * <p>
|
---|
851 | * Retrieves a stored message sequence from the storage.
|
---|
852 | * </p>
|
---|
853 | *
|
---|
854 | * @param obj
|
---|
855 | * object identifier in the storage
|
---|
856 | * @return message sequence retrieved from the storage
|
---|
857 | * @throws InvalidParameterException
|
---|
858 | * thrown if no message sequences with the identifier obj is
|
---|
859 | * found in the storage
|
---|
860 | */
|
---|
861 | @SuppressWarnings("unchecked")
|
---|
862 | private List<WindowsMessage> getStoredSeqVariable(String obj)
|
---|
863 | throws InvalidParameterException {
|
---|
864 | List<WindowsMessage> varMsgSeq = null;
|
---|
865 | Object tmp = messageStorage.get(obj);
|
---|
866 | if (tmp instanceof List<?>) {
|
---|
867 | varMsgSeq = (List<WindowsMessage>) tmp;
|
---|
868 | } else {
|
---|
869 | throw new InvalidParameterException(
|
---|
870 | "Failure obtaining term value for rule " + currentRuleName
|
---|
871 | + ": No sequence \"" + obj + "\" store.");
|
---|
872 | }
|
---|
873 | return varMsgSeq;
|
---|
874 | }
|
---|
875 |
|
---|
876 | /**
|
---|
877 | * <p>
|
---|
878 | * Handles term-nodes and returns the value of the described term.
|
---|
879 | * </p>
|
---|
880 | *
|
---|
881 | * @param currentMessage
|
---|
882 | * current message during the parsing; required to resolve
|
---|
883 | * references to "this" in a term
|
---|
884 | * @param termElement
|
---|
885 | * {@link Element} representing the term node
|
---|
886 | * @return value of the term or {@code null} of the term node could not be
|
---|
887 | * evaluated
|
---|
888 | */
|
---|
889 | private String getTermValue(WindowsMessage currentMessage,
|
---|
890 | Element termElement) {
|
---|
891 | String value = null;
|
---|
892 | WindowsMessage varMessage = null;
|
---|
893 | if (termElement.getName().equals("constValue")) {
|
---|
894 | value = termElement.getAttributeValue("value");
|
---|
895 | } else if (termElement.getName().equals("paramValue")) {
|
---|
896 | String objectName = termElement.getAttributeValue("obj");
|
---|
897 | varMessage = getStoredMessageVariable(currentMessage, objectName);
|
---|
898 | if (varMessage != null) {
|
---|
899 | String param = termElement.getAttributeValue("param");
|
---|
900 | value = varMessage.getParameter(param);
|
---|
901 | }
|
---|
902 | } else if (termElement.getName().equals("winInfoValue")) {
|
---|
903 | String objectName = termElement.getAttributeValue("obj");
|
---|
904 | varMessage = getStoredMessageVariable(currentMessage, objectName);
|
---|
905 | if (varMessage != null) {
|
---|
906 | String paramString = termElement.getAttributeValue("winParam");
|
---|
907 | if (paramString.equals("class")) {
|
---|
908 | value = varMessage.getWindowClass();
|
---|
909 | } else if (paramString.equals("resourceId")) {
|
---|
910 | value = "" + varMessage.getWindowResourceId();
|
---|
911 | } else if (paramString.equals("hwnd")) {
|
---|
912 | value = "" + varMessage.getHwnd();
|
---|
913 | } else if (paramString.equals("parentTarget")) {
|
---|
914 | String target = varMessage.getXmlWindowDescription();
|
---|
915 | int index = target.lastIndexOf("<");
|
---|
916 | if (index == 0) {
|
---|
917 | Console.traceln("Trying to adress parent of top-level window! Replay probably invalid!");
|
---|
918 | }
|
---|
919 | value = target.substring(0, index);
|
---|
920 | } else if (paramString.equals("parentClass")) {
|
---|
921 | value = varMessage.getParentClass();
|
---|
922 | }
|
---|
923 | }
|
---|
924 | } else if (termElement.getName().equals("msgInfoValue")) {
|
---|
925 | String objectName = termElement.getAttributeValue("obj");
|
---|
926 | varMessage = getStoredMessageVariable(currentMessage, objectName);
|
---|
927 | if (varMessage != null) {
|
---|
928 | String paramString = termElement.getAttributeValue("msgParam");
|
---|
929 | if (paramString.equals("type")) {
|
---|
930 | value = "" + varMessage.getType();
|
---|
931 | } else if (paramString.equals("target")) {
|
---|
932 | value = varMessage.getXmlWindowDescription();
|
---|
933 | }
|
---|
934 | }
|
---|
935 | }
|
---|
936 | return value;
|
---|
937 | }
|
---|
938 |
|
---|
939 | /**
|
---|
940 | * <p>
|
---|
941 | * Handles term-nodes contained by equalSeq nodes.
|
---|
942 | * </p>
|
---|
943 | *
|
---|
944 | * @param termElement
|
---|
945 | * {@link Element} representing the term-node
|
---|
946 | * @return list of values of the term
|
---|
947 | */
|
---|
948 | private List<String> getTermValueSeq(Element termElement) {
|
---|
949 | List<String> values = new LinkedList<String>();
|
---|
950 | if (termElement.getName().equals("seqValue")) {
|
---|
951 | String obj = termElement.getAttributeValue("seqObj");
|
---|
952 | String param = termElement.getAttributeValue("param");
|
---|
953 | List<WindowsMessage> seqVar = getStoredSeqVariable(obj);
|
---|
954 |
|
---|
955 | for (WindowsMessage msg : seqVar) {
|
---|
956 | // msg.getParameter returns null, if parameter is not found,
|
---|
957 | // therefore the List can contain null-values
|
---|
958 | values.add(msg.getParameter(param));
|
---|
959 | }
|
---|
960 | }
|
---|
961 | return values;
|
---|
962 | }
|
---|
963 |
|
---|
964 | /**
|
---|
965 | * <p>
|
---|
966 | * Handles LOWORD and HIWORD child nodes of LPARAM and WPARAM nodes. The
|
---|
967 | * returned value is the LPARAM/WPARAM value based on the LOWORD and HIWORD.
|
---|
968 | * </p>
|
---|
969 | *
|
---|
970 | * @param param
|
---|
971 | * {@link Element} representing the LPARAM/WPARAM node
|
---|
972 | * @return value of the LPARAM/WPARAM
|
---|
973 | */
|
---|
974 | private long loHiWord(Element param) {
|
---|
975 | Element loword = param.getChild("LOWORD", rulesNamespace);
|
---|
976 | Element hiword = param.getChild("HIWORD", rulesNamespace);
|
---|
977 | String lowordStr = getTermValue(null, (Element) loword.getChildren()
|
---|
978 | .get(0));
|
---|
979 | String hiwordStr = getTermValue(null, (Element) hiword.getChildren()
|
---|
980 | .get(0));
|
---|
981 | return MAKEPARAM(Short.parseShort(lowordStr),
|
---|
982 | Short.parseShort(hiwordStr));
|
---|
983 | }
|
---|
984 |
|
---|
985 | /**
|
---|
986 | * <p>
|
---|
987 | * Takes to short integers and combines them into the high and low order
|
---|
988 | * bits of an integer.
|
---|
989 | * </p>
|
---|
990 | *
|
---|
991 | * @param loword
|
---|
992 | * low word
|
---|
993 | * @param hiword
|
---|
994 | * high word
|
---|
995 | * @return combined integer
|
---|
996 | */
|
---|
997 | private static int MAKEPARAM(short loword, short hiword) {
|
---|
998 | return loword | ((int) hiword) << Short.SIZE;
|
---|
999 | }
|
---|
1000 |
|
---|
1001 | }
|
---|