private WindowsBrowser getBrowserFromRegistryEntry(
Regor regor, int key, String subKey, String exeKey, Map exesToBrowserObjs)
throws RegistryErrorException {
WindowsBrowser winBrowser = null;
int key2 = regor.openKey(key, subKey);
List values = regor.listValueNames(key2);
// boolean fndPath = false;
for (int x = 0; values != null && x < values.size() && winBrowser == null; x++) {
byte[] buf = regor.readValue(key2, (String) values.get(x));
String path = buf != null ? Regor.parseValue(buf) : "";
String lpath = path.toLowerCase();
if (lpath.endsWith(exeKey)) {
winBrowser = (WindowsBrowser) exesToBrowserObjs.get(exeKey);
// get path to exe and set it in winBrowser object
StringTokenizer tokenizer = new StringTokenizer(path, "\\", false);
StringBuffer pathBuf = new StringBuffer();
int tokCnt = tokenizer.countTokens();
// we want to ignore the last token
for (int idx = 1; idx < tokCnt; idx++) {
pathBuf.append(tokenizer.nextToken());
pathBuf.append('\\');
}
winBrowser.setPathToExe(pathBuf.toString());
}
}
return winBrowser;
}
/**
* Accesses the Windows registry to look for browser exes. The browsers search for are in the
* browsersToCheck list. The returned map will use display names and exe names as keys to the
* {@link WindowsBrowser WindowsBrowser} objects.
*
* @param browsersToCheck List
* @return Map
*/
private Map getAvailableBrowsers(List tempBrowsersToCheck) {
logger.debug("finding available browsers using registry");
logger.debug("browsers to check: " + tempBrowsersToCheck);
Map browsersAvailable = new TreeMap(String.CASE_INSENSITIVE_ORDER);
try {
// create map of exe names to win browser objects
Map exesToBrowserObjs = getExeNamesToBrowsers(tempBrowsersToCheck);
// access and look in registry
Regor regor = new Regor();
String subKeyName = "Software\\Microsoft\\Windows\\CurrentVersion\\App Paths";
int key = regor.openKey(Regor.HKEY_LOCAL_MACHINE, subKeyName);
if (key > -1) {
List keys = regor.listKeys(key);
Collections.sort(keys, String.CASE_INSENSITIVE_ORDER);
Iterator keysIter = exesToBrowserObjs.keySet().iterator();
while (keysIter.hasNext()) {
String exeKey = (String) keysIter.next();
int index = Collections.binarySearch(keys, exeKey, String.CASE_INSENSITIVE_ORDER);
if (index >= 0) {
WindowsBrowser winBrowser =
getBrowserFromRegistryEntry(
regor, key, (String) keys.get(index), exeKey, exesToBrowserObjs);
if (winBrowser != null) {
if (logger.isDebugEnabled()) {
logger.debug(
"Adding browser " + winBrowser.getBrowserDisplayName() + " to available list.");
logger.debug(winBrowser.getPathToExe());
}
// adding display and exe for backward compatibility and
// ease of use if someone passes in the name of an exe
browsersAvailable.put(winBrowser.getBrowserDisplayName(), winBrowser);
browsersAvailable.put(winBrowser.getBrowserApplicationName(), winBrowser);
tempBrowsersToCheck.remove(winBrowser);
}
}
}
}
} catch (RegistryErrorException ex) {
logger.error("problem accessing registry", ex);
}
return browsersAvailable;
}