/**
* Reads a post signer request off the wire, sends it to the WS with a new callback for returning
* the response.
*
* @param request the post signer request
* @param responseCallback the callback to send the response back
*/
void processPostSignerRequest(final IQ request, final PacketCallback responseCallback) {
Element item = null, signatureElement = null;
Element pubsubRequest = request.getElement().element("pubsub");
Element publish = pubsubRequest.element("publish");
if (publish != null) {
item = publish.element("item");
if (item != null) {
signatureElement = item.element("signature");
}
}
if (publish == null
|| item == null
|| signatureElement == null
|| signatureElement.attribute("domain") == null
|| signatureElement.attribute("algorithm") == null
|| signatureElement.element("certificate") == null) {
responseCallback.error(FederationErrors.badRequest("Malformed post signer request"));
return;
}
ProtocolSignerInfo signer;
try {
signer = XmppUtil.xmlToProtocolSignerInfo(signatureElement);
} catch (UnknownSignerType e) {
responseCallback.error(
FederationErrors.badRequest("Could not understand signer algorithm: " + e));
return;
}
WaveletFederationProvider.PostSignerInfoResponseListener listener =
new WaveletFederationProvider.PostSignerInfoResponseListener() {
@Override
public void onFailure(FederationError error) {
responseCallback.error(error);
}
@Override
public void onSuccess() {
IQ response = IQ.createResultIQ(request);
Element pubsub = response.setChildElement("pubsub", XmppNamespace.NAMESPACE_PUBSUB);
Element item = pubsub.addElement("publish").addElement("item");
item.addAttribute("node", "signer");
item.addElement("signature-response", XmppNamespace.NAMESPACE_WAVE_SERVER);
responseCallback.run(response);
}
};
// TODO(thorogood,arb): This field is a Bad Idea; it could be faked and not
// be a provider we host on this instance. Instead, we should infer from the
// "To:" JID.
String targetDomain = signatureElement.attributeValue("domain");
// The first argument is the domain we intend to send this information to.
waveletProvider.postSignerInfo(targetDomain, signer, listener);
}
/**
* Handles a submit request from a foreign wave remote. Sends it to the wave server, sets up a
* callback to send the response.
*
* @param request the submit request
* @param responseCallback the callback to send the response back
*/
void processSubmitRequest(final IQ request, final PacketCallback responseCallback) {
Element item = null, submitRequest = null, deltaElement = null;
Element pubsubRequest = request.getElement().element("pubsub");
// TODO: check for correct elements.
Element publish = pubsubRequest.element("publish");
if (publish != null) {
item = publish.element("item");
if (item != null) {
submitRequest = item.element("submit-request");
if (submitRequest != null) {
deltaElement = submitRequest.element("delta");
}
}
}
if (publish == null
|| item == null
|| submitRequest == null
|| deltaElement == null
|| deltaElement.attribute("wavelet-name") == null
|| deltaElement.getText() == null) {
responseCallback.error(FederationErrors.badRequest("Malformed submit request"));
return;
}
final WaveletName waveletName;
try {
waveletName =
XmppUtil.waveletNameCodec.uriToWaveletName(deltaElement.attributeValue("wavelet-name"));
} catch (EncodingException e) {
responseCallback.error(
FederationErrors.badRequest(
"Malformed wavelet name: " + deltaElement.attributeValue("wavelet-name")));
return;
}
final ProtocolSignedDelta delta;
try {
delta = ProtocolSignedDelta.parseFrom(Base64Util.decode(deltaElement.getText()));
} catch (InvalidProtocolBufferException e) {
responseCallback.error(
FederationErrors.badRequest("Malformed delta, not a valid protocol buffer"));
return;
}
// Construct a submit result listener inline.
WaveletFederationProvider.SubmitResultListener listener =
new WaveletFederationProvider.SubmitResultListener() {
@Override
public void onFailure(FederationError error) {
responseCallback.error(error);
}
@Override
public void onSuccess(int operations, ProtocolHashedVersion version, long timestamp) {
IQ response = IQ.createResultIQ(request);
Element pubsub = response.setChildElement("pubsub", XmppNamespace.NAMESPACE_PUBSUB);
Element submitResponse =
pubsub
.addElement("publish")
.addElement("item")
.addElement("submit-response", XmppNamespace.NAMESPACE_WAVE_SERVER);
submitResponse.addAttribute("application-timestamp", String.valueOf(timestamp));
submitResponse.addAttribute("operations-applied", String.valueOf(operations));
Element hashedVersion = submitResponse.addElement("hashed-version");
hashedVersion.addAttribute("history-hash", Base64Util.encode(version.getHistoryHash()));
hashedVersion.addAttribute("version", String.valueOf(version.getVersion()));
responseCallback.run(response);
}
};
// Hand off the submit request to the wavelet provider.
waveletProvider.submitRequest(waveletName, delta, listener);
}
/**
* Reads a get signer request off the wire, sends it to the WS with a new callback for returning
* the response.
*
* @param request the get signer request
* @param responseCallback the callback to send the response back
*/
void processGetSignerRequest(final IQ request, final PacketCallback responseCallback) {
Element items = request.getChildElement().element("items");
Element signerRequest = items != null ? items.element("signer-request") : null;
if (items == null
|| signerRequest == null
|| signerRequest.attributeValue("wavelet-name") == null
|| signerRequest.attributeValue("signer-id") == null
|| signerRequest.attributeValue("version") == null
|| signerRequest.attributeValue("history-hash") == null) {
manager.sendErrorResponse(request, FederationErrors.badRequest("Malformed signer request"));
return;
}
final ByteString signerId;
try {
signerId = Base64Util.decode(signerRequest.attributeValue("signer-id"));
} catch (IllegalArgumentException e) {
responseCallback.error(FederationErrors.badRequest("Malformed signer ID"));
return;
}
final ProtocolHashedVersion deltaEndVersion;
try {
deltaEndVersion =
parseFromUnsafe(
signerRequest.attributeValue("version"),
signerRequest.attributeValue("history-hash"));
} catch (IllegalArgumentException e) {
responseCallback.error(FederationErrors.badRequest("Invalid hashed version"));
return;
}
final WaveletName waveletName;
try {
waveletName =
XmppUtil.waveletNameCodec.uriToWaveletName(signerRequest.attributeValue("wavelet-name"));
} catch (EncodingException e) {
responseCallback.error(FederationErrors.badRequest("Malformed wavelet name"));
return;
}
WaveletFederationProvider.DeltaSignerInfoResponseListener listener =
new WaveletFederationProvider.DeltaSignerInfoResponseListener() {
@Override
public void onFailure(FederationError error) {
responseCallback.error(error);
}
@Override
public void onSuccess(ProtocolSignerInfo signerInfo) {
IQ response = IQ.createResultIQ(request);
Element pubsub = response.setChildElement("pubsub", XmppNamespace.NAMESPACE_PUBSUB);
Element items = pubsub.addElement("items");
XmppUtil.protocolSignerInfoToXml(signerInfo, items);
responseCallback.run(response);
}
};
waveletProvider.getDeltaSignerInfo(signerId, waveletName, deltaEndVersion, listener);
}
/**
* Reads a history request off the wire, sends it to the WS with a new callback for returning the
* response.
*
* @param request the history request
* @param responseCallback the callback to send the response back
*/
void processHistoryRequest(final IQ request, final PacketCallback responseCallback) {
Element items = null, historyDelta = null;
Element pubsubRequest = request.getElement().element("pubsub");
if (pubsubRequest != null) {
items = pubsubRequest.element("items");
if (items != null) {
historyDelta = items.element("delta-history");
}
}
if (items == null
|| historyDelta == null
|| historyDelta.attribute("start-version") == null
|| historyDelta.attribute("start-version-hash") == null
|| historyDelta.attribute("end-version") == null
|| historyDelta.attribute("end-version-hash") == null
|| historyDelta.attribute("wavelet-name") == null) {
responseCallback.error(FederationErrors.badRequest("Malformed history request"));
return;
}
final ProtocolHashedVersion startVersion;
try {
startVersion =
parseFromUnsafe(
historyDelta.attributeValue("start-version"),
historyDelta.attributeValue("start-version-hash"));
} catch (IllegalArgumentException e) {
responseCallback.error(FederationErrors.badRequest("Invalid format of start version"));
return;
}
final ProtocolHashedVersion endVersion;
try {
endVersion =
parseFromUnsafe(
historyDelta.attributeValue("end-version"),
historyDelta.attributeValue("end-version-hash"));
} catch (IllegalArgumentException e) {
responseCallback.error(FederationErrors.badRequest("Invalid format of end version"));
return;
}
final long responseLengthLimit;
if (historyDelta.attribute("response-length-limit") != null) {
try {
responseLengthLimit = Long.parseLong(historyDelta.attributeValue("response-length-limit"));
} catch (NumberFormatException e) {
responseCallback.error(FederationErrors.badRequest("Invalid response length limit"));
return;
}
} else {
responseLengthLimit = 0;
}
final WaveletName waveletName;
try {
waveletName =
XmppUtil.waveletNameCodec.uriToWaveletName(historyDelta.attributeValue("wavelet-name"));
} catch (EncodingException e) {
responseCallback.error(
FederationErrors.badRequest(
"Malformed wavelet name: " + historyDelta.attributeValue("wavelet-name")));
return;
}
// Construct a new response listener inline.
WaveletFederationProvider.HistoryResponseListener listener =
new WaveletFederationProvider.HistoryResponseListener() {
@Override
public void onFailure(FederationError error) {
responseCallback.error(error);
}
@Override
public void onSuccess(
List<ByteString> appliedDeltaSet,
ProtocolHashedVersion lastCommittedVersion,
long versionTruncatedAt) {
IQ response = IQ.createResultIQ(request);
Element pubsub = response.setChildElement("pubsub", XmppNamespace.NAMESPACE_PUBSUB);
Element items = pubsub.addElement("items");
// Add each delta to the outgoing response.
for (ByteString appliedDelta : appliedDeltaSet) {
items
.addElement("item")
.addElement("applied-delta", XmppNamespace.NAMESPACE_WAVE_SERVER)
.addCDATA(Base64Util.encode(appliedDelta.toByteArray()));
}
// Set the LCV history-hash, if provided.
// TODO(thorogood): We don't set the hashed version, which is wrong,
// but it's not part of the current spec (Feb 2010).
if (lastCommittedVersion != null && lastCommittedVersion.hasVersion()) {
String version = String.valueOf(lastCommittedVersion.getVersion());
items
.addElement("item")
.addElement("commit-notice", XmppNamespace.NAMESPACE_WAVE_SERVER)
.addAttribute("version", version);
}
// Set the version truncated at, if provided.
if (versionTruncatedAt > 0) {
String version = String.valueOf(versionTruncatedAt);
items
.addElement("item")
.addElement("history-truncated", XmppNamespace.NAMESPACE_WAVE_SERVER)
.addAttribute("version", version);
}
// Send the message to the source.
responseCallback.run(response);
}
};
// Hand off a history request to the waveletProvider.
// TODO(thorogood,arb): Note that the following remote domain is going to be
// the Wave component JID (e.g. wave.foo.com), and *not* the actual remote domain.
String remoteDomain = request.getFrom().getDomain();
waveletProvider.requestHistory(
waveletName, remoteDomain, startVersion, endVersion, responseLengthLimit, listener);
}