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