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/* vim:set ts=4 sw=2 et cindent: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsNativeCharsetUtils.h"
#include "nsIPrefService.h"
#include "nsServiceManagerUtils.h"
#include "nsAuthSASL.h"
static const char kNegotiateAuthSSPI[] = "network.auth.use-sspi";
nsAuthSASL::nsAuthSASL() { mSASLReady = false; }
void nsAuthSASL::Reset() { mSASLReady = false; }
/* Limitations apply to this class's thread safety. See the header file */
NS_IMPL_ISUPPORTS(nsAuthSASL, nsIAuthModule)
NS_IMETHODIMP
nsAuthSASL::Init(const nsACString& serviceName, uint32_t serviceFlags,
const nsAString& domain, const nsAString& username,
const nsAString& password) {
nsresult rv;
NS_ASSERTION(!username.IsEmpty(), "SASL requires a username");
NS_ASSERTION(domain.IsEmpty() && password.IsEmpty(),
"unexpected credentials");
mUsername = username;
// If we're doing SASL, we should do mutual auth
serviceFlags |= REQ_MUTUAL_AUTH;
// Find out whether we should be trying SSPI or not
const char* authType = "kerb-gss";
nsCOMPtr<nsIPrefBranch> prefs = do_GetService(NS_PREFSERVICE_CONTRACTID);
if (prefs) {
bool val;
rv = prefs->GetBoolPref(kNegotiateAuthSSPI, &val);
if (NS_SUCCEEDED(rv) && val) authType = "kerb-sspi";
}
MOZ_ALWAYS_TRUE(mInnerModule = nsIAuthModule::CreateInstance(authType));
mInnerModule->Init(serviceName, serviceFlags, u""_ns, u""_ns, u""_ns);
return NS_OK;
}
NS_IMETHODIMP
nsAuthSASL::GetNextToken(const void* inToken, uint32_t inTokenLen,
void** outToken, uint32_t* outTokenLen) {
nsresult rv;
void* unwrappedToken;
char* message;
uint32_t unwrappedTokenLen, messageLen;
nsAutoCString userbuf;
if (!mInnerModule) return NS_ERROR_NOT_INITIALIZED;
if (mSASLReady) {
// If the server COMPLETEs with an empty token, Cyrus sends us that token.
// I don't think this is correct, but we need to handle that behaviour.
// Cyrus ignores the contents of our reply token.
if (inTokenLen == 0) {
*outToken = nullptr;
*outTokenLen = 0;
return NS_OK;
}
// We've completed the GSSAPI portion of the handshake, and are
// now ready to do the SASL security layer and authzid negotiation
// Input packet from the server needs to be unwrapped.
rv = mInnerModule->Unwrap(inToken, inTokenLen, &unwrappedToken,
&unwrappedTokenLen);
if (NS_FAILED(rv)) {
Reset();
return rv;
}
// If we were doing security layers then we'd care what the
// server had sent us. We're not, so all we had to do was make
// sure that the signature was correct with the above unwrap()
free(unwrappedToken);
NS_CopyUnicodeToNative(mUsername, userbuf);
messageLen = userbuf.Length() + 4 + 1;
message = (char*)moz_xmalloc(messageLen);
message[0] = 0x01; // No security layer
message[1] = 0x00;
message[2] = 0x00;
message[3] = 0x00; // Maxbuf must be zero if we've got no sec layer
strcpy(message + 4, userbuf.get());
// Userbuf should not be nullptr terminated, so trim the trailing nullptr
// when wrapping the message
rv = mInnerModule->Wrap((void*)message, messageLen - 1, false, outToken,
outTokenLen);
free(message);
Reset(); // All done
return NS_SUCCEEDED(rv) ? NS_SUCCESS_AUTH_FINISHED : rv;
}
rv = mInnerModule->GetNextToken(inToken, inTokenLen, outToken, outTokenLen);
if (rv == NS_SUCCESS_AUTH_FINISHED) {
mSASLReady = true;
rv = NS_OK;
}
return rv;
}
NS_IMETHODIMP
nsAuthSASL::Unwrap(const void* inToken, uint32_t inTokenLen, void** outToken,
uint32_t* outTokenLen) {
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsAuthSASL::Wrap(const void* inToken, uint32_t inTokenLen, bool confidential,
void** outToken, uint32_t* outTokenLen) {
return NS_ERROR_NOT_IMPLEMENTED;
}
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