@Override
public long skip(long n) throws IOException {
if (closed) {
throw new IOException(sm.getString("inputBuffer.streamClosed"));
}
if (n < 0) {
throw new IllegalArgumentException();
}
long nRead = 0;
while (nRead < n) {
if (cb.getLength() >= n) {
cb.setOffset(cb.getStart() + (int) n);
nRead = n;
} else {
nRead += cb.getLength();
cb.setOffset(cb.getEnd());
int toRead = 0;
if (cb.getChars().length < (n - nRead)) {
toRead = cb.getChars().length;
} else {
toRead = (int) (n - nRead);
}
int nb = realReadChars(cb.getChars(), 0, toRead);
if (nb < 0) {
break;
}
}
}
return nRead;
}
/**
* Check that the URI is normalized following character decoding.
*
* <p>This method checks for "\", 0, "//", "/./" and "/../". This method will return false if
* sequences that are supposed to be normalized are still present in the URI.
*
* @param uriMB URI to be checked (should be chars)
*/
public static boolean checkNormalize(MessageBytes uriMB) {
CharChunk uriCC = uriMB.getCharChunk();
char[] c = uriCC.getChars();
int start = uriCC.getStart();
int end = uriCC.getEnd();
int pos = 0;
// Check for '\' and 0
for (pos = start; pos < end; pos++) {
if (c[pos] == '\\') {
return false;
}
if (c[pos] == 0) {
return false;
}
}
// Check for "//"
for (pos = start; pos < (end - 1); pos++) {
if (c[pos] == '/') {
if (c[pos + 1] == '/') {
return false;
}
}
}
// Check for ending with "/." or "/.."
if (((end - start) >= 2) && (c[end - 1] == '.')) {
if ((c[end - 2] == '/') || ((c[end - 2] == '.') && (c[end - 3] == '/'))) {
return false;
}
}
// Check for "/./"
if (uriCC.indexOf("/./", 0, 3, 0) >= 0) {
return false;
}
// Check for "/../"
if (uriCC.indexOf("/../", 0, 4, 0) >= 0) {
return false;
}
return true;
}
@Override
public int realReadChars(char cbuf[], int off, int len) throws IOException {
if (!gotEnc) {
setConverter();
}
boolean eof = false;
if (bb.getLength() <= 0) {
int nRead = realReadBytes(bb.getBytes(), 0, bb.getBytes().length);
if (nRead < 0) {
eof = true;
}
}
if (markPos == -1) {
cb.setOffset(0);
cb.setEnd(0);
} else {
// Make sure there's enough space in the worst case
cb.makeSpace(bb.getLength());
if ((cb.getBuffer().length - cb.getEnd()) == 0) {
// We went over the limit
cb.setOffset(0);
cb.setEnd(0);
markPos = -1;
}
}
state = CHAR_STATE;
conv.convert(bb, cb, eof);
if (cb.getLength() == 0 && eof) {
return -1;
} else {
return cb.getLength();
}
}
/*
* Removes /./ and /../ sequences from absolute URLs.
* Code borrowed heavily from CoyoteAdapter.normalize()
*/
private void normalize(CharChunk cc) {
// Strip query string and/or fragment first as doing it this way makes
// the normalization logic a lot simpler
int truncate = cc.indexOf('?');
if (truncate == -1) {
truncate = cc.indexOf('#');
}
char[] truncateCC = null;
if (truncate > -1) {
truncateCC = Arrays.copyOfRange(cc.getBuffer(), cc.getStart() + truncate, cc.getEnd());
cc.setEnd(cc.getStart() + truncate);
}
if (cc.endsWith("/.") || cc.endsWith("/..")) {
try {
cc.append('/');
} catch (IOException e) {
throw new IllegalArgumentException(cc.toString(), e);
}
}
char[] c = cc.getChars();
int start = cc.getStart();
int end = cc.getEnd();
int index = 0;
int startIndex = 0;
// Advance past the first three / characters (should place index just
// scheme://host[:port]
for (int i = 0; i < 3; i++) {
startIndex = cc.indexOf('/', startIndex + 1);
}
// Remove /./
index = startIndex;
while (true) {
index = cc.indexOf("/./", 0, 3, index);
if (index < 0) {
break;
}
copyChars(c, start + index, start + index + 2, end - start - index - 2);
end = end - 2;
cc.setEnd(end);
}
// Remove /../
index = startIndex;
int pos;
while (true) {
index = cc.indexOf("/../", 0, 4, index);
if (index < 0) {
break;
}
// Can't go above the server root
if (index == startIndex) {
throw new IllegalArgumentException();
}
int index2 = -1;
for (pos = start + index - 1; (pos >= 0) && (index2 < 0); pos--) {
if (c[pos] == (byte) '/') {
index2 = pos;
}
}
copyChars(c, start + index2, start + index + 3, end - start - index - 3);
end = end + index2 - index - 3;
cc.setEnd(end);
index = index2;
}
// Add the query string and/or fragment (if present) back in
if (truncateCC != null) {
try {
cc.append(truncateCC, 0, truncateCC.length);
} catch (IOException ioe) {
throw new IllegalArgumentException(ioe);
}
}
}
/**
* Authenticate the user making this request, based on the specified login configuration. Return
* <code>true</code> if any specified constraint has been satisfied, or <code>false</code> if we
* have created a response challenge already.
*
* @param request Request we are processing
* @param response Response we are creating
* @param config Login configuration describing how authentication should be performed
* @exception IOException if an input/output error occurs
*/
@Override
public boolean authenticate(Request request, HttpServletResponse response, LoginConfig config)
throws IOException {
// Have we already authenticated someone?
Principal principal = request.getUserPrincipal();
String ssoId = (String) request.getNote(Constants.REQ_SSOID_NOTE);
if (principal != null) {
if (log.isDebugEnabled()) log.debug("Already authenticated '" + principal.getName() + "'");
// Associate the session with any existing SSO session
if (ssoId != null) associate(ssoId, request.getSessionInternal(true));
return (true);
}
// Is there an SSO session against which we can try to reauthenticate?
if (ssoId != null) {
if (log.isDebugEnabled())
log.debug("SSO Id " + ssoId + " set; attempting " + "reauthentication");
/* Try to reauthenticate using data cached by SSO. If this fails,
either the original SSO logon was of DIGEST or SSL (which
we can't reauthenticate ourselves because there is no
cached username and password), or the realm denied
the user's reauthentication for some reason.
In either case we have to prompt the user for a logon */
if (reauthenticateFromSSO(ssoId, request)) return true;
}
// Validate any credentials already included with this request
String username = null;
String password = null;
MessageBytes authorization =
request.getCoyoteRequest().getMimeHeaders().getValue("authorization");
if (authorization != null) {
authorization.toBytes();
ByteChunk authorizationBC = authorization.getByteChunk();
if (authorizationBC.startsWithIgnoreCase("basic ", 0)) {
authorizationBC.setOffset(authorizationBC.getOffset() + 6);
// FIXME: Add trimming
// authorizationBC.trim();
CharChunk authorizationCC = authorization.getCharChunk();
Base64.decode(authorizationBC, authorizationCC);
// Get username and password
int colon = authorizationCC.indexOf(':');
if (colon < 0) {
username = authorizationCC.toString();
} else {
char[] buf = authorizationCC.getBuffer();
username = new String(buf, 0, colon);
password = new String(buf, colon + 1, authorizationCC.getEnd() - colon - 1);
}
authorizationBC.setOffset(authorizationBC.getOffset() - 6);
}
principal = context.getRealm().authenticate(username, password);
if (principal != null) {
register(request, response, principal, Constants.BASIC_METHOD, username, password);
return (true);
}
}
StringBuilder value = new StringBuilder(16);
value.append("Basic realm=\"");
if (config.getRealmName() == null) {
value.append(REALM_NAME);
} else {
value.append(config.getRealmName());
}
value.append('\"');
response.setHeader(AUTH_HEADER_NAME, value.toString());
response.sendError(HttpServletResponse.SC_UNAUTHORIZED);
return (false);
}