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Diffstat (limited to 'indra/viewer_components/login/lllogin.cpp')
| -rw-r--r-- | indra/viewer_components/login/lllogin.cpp | 374 |
1 files changed, 374 insertions, 0 deletions
diff --git a/indra/viewer_components/login/lllogin.cpp b/indra/viewer_components/login/lllogin.cpp new file mode 100644 index 0000000000..7a30315b9a --- /dev/null +++ b/indra/viewer_components/login/lllogin.cpp @@ -0,0 +1,374 @@ +/** + * @file lllogin.cpp + * + * $LicenseInfo:firstyear=2009&license=viewergpl$ + * + * Copyright (c) 2009, Linden Research, Inc. + * + * Second Life Viewer Source Code + * The source code in this file ("Source Code") is provided by Linden Lab + * to you under the terms of the GNU General Public License, version 2.0 + * ("GPL"), unless you have obtained a separate licensing agreement + * ("Other License"), formally executed by you and Linden Lab. Terms of + * the GPL can be found in doc/GPL-license.txt in this distribution, or + * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2 + * + * There are special exceptions to the terms and conditions of the GPL as + * it is applied to this Source Code. View the full text of the exception + * in the file doc/FLOSS-exception.txt in this software distribution, or + * online at + * http://secondlifegrid.net/programs/open_source/licensing/flossexception + * + * By copying, modifying or distributing this software, you acknowledge + * that you have read and understood your obligations described above, + * and agree to abide by those obligations. + * + * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO + * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY, + * COMPLETENESS OR PERFORMANCE. + * $/LicenseInfo$ + */ + +#include <boost/coroutine/coroutine.hpp> +#include "linden_common.h" +#include "llsd.h" +#include "llsdutil.h" + +/*==========================================================================*| +#ifdef LL_WINDOWS + // non-virtual destructor warning, boost::statechart does this intentionally. + #pragma warning (disable : 4265) +#endif +|*==========================================================================*/ + +#include "lllogin.h" + +#include <boost/bind.hpp> + +#include "llcoros.h" +#include "llevents.h" +#include "lleventfilter.h" +#include "lleventcoro.h" + +//********************* +// LLLogin +// *NOTE:Mani - Is this Impl needed now that the state machine runs the show? +class LLLogin::Impl +{ +public: + Impl(): + mPump("login", true) // Create the module's event pump with a tweaked (unique) name. + { + mValidAuthResponse["status"] = LLSD(); + mValidAuthResponse["errorcode"] = LLSD(); + mValidAuthResponse["error"] = LLSD(); + mValidAuthResponse["transfer_rate"] = LLSD(); + } + + void connect(const std::string& uri, const LLSD& credentials); + void disconnect(); + LLEventPump& getEventPump() { return mPump; } + +private: + void sendProgressEvent(const std::string& state, const std::string& change, + const LLSD& data = LLSD()) + { + LLSD status_data; + status_data["state"] = state; + status_data["change"] = change; + status_data["progress"] = 0.0f; + + if(mAuthResponse.has("transfer_rate")) + { + status_data["transfer_rate"] = mAuthResponse["transfer_rate"]; + } + + if(data.isDefined()) + { + status_data["data"] = data; + } + + mPump.post(status_data); + } + + LLSD validateResponse(const std::string& pumpName, const LLSD& response) + { + // Validate the response. If we don't recognize it, things + // could get ugly. + std::string mismatch(llsd_matches(mValidAuthResponse, response)); + if (! mismatch.empty()) + { + LL_ERRS("LLLogin") << "Received unrecognized event (" << mismatch << ") on " + << pumpName << "pump: " << response + << LL_ENDL; + return LLSD(); + } + + return response; + } + + // In a coroutine's top-level function args, do NOT NOT NOT accept + // references (const or otherwise) to anything but the self argument! Pass + // by value only! + void login_(LLCoros::self& self, std::string uri, LLSD credentials); + + LLEventStream mPump; + LLSD mAuthResponse, mValidAuthResponse; +}; + +void LLLogin::Impl::connect(const std::string& uri, const LLSD& credentials) +{ + // Launch a coroutine with our login_() method. Run the coroutine until + // its first wait; at that point, return here. + std::string coroname = + LLCoros::instance().launch("LLLogin::Impl::login_", + boost::bind(&Impl::login_, this, _1, uri, credentials)); +} + +void LLLogin::Impl::login_(LLCoros::self& self, std::string uri, LLSD credentials) +{ + LL_INFOS("LLLogin") << "Entering coroutine " << LLCoros::instance().getName(self) + << " with uri '" << uri << "', credentials " << credentials << LL_ENDL; + // Arriving in SRVRequest state + LLEventStream replyPump("reply", true); + // Should be an array of one or more uri strings. + LLSD rewrittenURIs; + { + LLEventTimeout filter(replyPump); + sendProgressEvent("offline", "srvrequest"); + + // Request SRV record. + LL_INFOS("LLLogin") << "Requesting SRV record from " << uri << LL_ENDL; + + // *NOTE:Mani - Completely arbitrary timeout value for SRV request. + filter.errorAfter(5, "SRV Request timed out!"); + + // Make request + LLSD request; + request["op"] = "rewriteURI"; + request["uri"] = uri; + request["reply"] = replyPump.getName(); + rewrittenURIs = postAndWait(self, request, "LLAres", filter); + } // we no longer need the filter + + LLEventPump& xmlrpcPump(LLEventPumps::instance().obtain("LLXMLRPCTransaction")); + + // Loop through the rewrittenURIs, counting attempts along the way. + // Because of possible redirect responses, we may make more than one + // attempt per rewrittenURIs entry. + LLSD::Integer attempts = 0; + for (LLSD::array_const_iterator urit(rewrittenURIs.beginArray()), + urend(rewrittenURIs.endArray()); + urit != urend; ++urit) + { + LLSD request(credentials); + request["reply"] = replyPump.getName(); + request["uri"] = *urit; + std::string status; + + // Loop back to here if login attempt redirects to a different + // request["uri"] + for (;;) + { + ++attempts; + LLSD progress_data; + progress_data["attempt"] = attempts; + progress_data["request"] = request; + sendProgressEvent("offline", "authenticating", progress_data); + + // We expect zero or more "Downloading" status events, followed by + // exactly one event with some other status. Use postAndWait() the + // first time, because -- at least in unit-test land -- it's + // possible for the reply to arrive before the post() call + // returns. Subsequent responses, of course, must be awaited + // without posting again. + for (mAuthResponse = validateResponse(replyPump.getName(), + postAndWait(self, request, xmlrpcPump, replyPump, "reply")); + mAuthResponse["status"].asString() == "Downloading"; + mAuthResponse = validateResponse(replyPump.getName(), + waitForEventOn(self, replyPump))) + { + // Still Downloading -- send progress update. + sendProgressEvent("offline", "downloading"); + } + status = mAuthResponse["status"].asString(); + + // Okay, we've received our final status event for this + // request. Unless we got a redirect response, break the retry + // loop for the current rewrittenURIs entry. + if (! (status == "Complete" && + mAuthResponse["responses"]["login"].asString() == "indeterminate")) + { + break; + } + + // Here the login service at the current URI is redirecting us + // to some other URI ("indeterminate" -- why not "redirect"?). + // The response should contain another uri to try, with its + // own auth method. + request["uri"] = mAuthResponse["next_url"]; + request["method"] = mAuthResponse["next_method"]; + } // loop back to try the redirected URI + + // Here we're done with redirects for the current rewrittenURIs + // entry. + if (status == "Complete") + { + // StatusComplete does not imply auth success. Check the + // actual outcome of the request. We've already handled the + // "indeterminate" case in the loop above. + if (mAuthResponse["responses"]["login"].asString() == "true") + { + sendProgressEvent("online", "connect", mAuthResponse["responses"]); + } + else + { + sendProgressEvent("offline", "fail.login", mAuthResponse["responses"]); + } + return; // Done! + } + // If we don't recognize status at all, trouble + if (! (status == "CURLError" + || status == "XMLRPCError" + || status == "OtherError")) + { + LL_ERRS("LLLogin") << "Unexpected status from " << xmlrpcPump.getName() << " pump: " + << mAuthResponse << LL_ENDL; + return; + } + + // Here status IS one of the errors tested above. + } // Retry if there are any more rewrittenURIs. + + // Here we got through all the rewrittenURIs without succeeding. Tell + // caller this didn't work out so well. Of course, the only failure data + // we can reasonably show are from the last of the rewrittenURIs. + sendProgressEvent("offline", "fail.login", mAuthResponse["responses"]); +} + +void LLLogin::Impl::disconnect() +{ + sendProgressEvent("offline", "disconnect"); +} + +//********************* +// LLLogin +LLLogin::LLLogin() : + mImpl(new LLLogin::Impl()) +{ +} + +LLLogin::~LLLogin() +{ +} + +void LLLogin::connect(const std::string& uri, const LLSD& credentials) +{ + mImpl->connect(uri, credentials); +} + + +void LLLogin::disconnect() +{ + mImpl->disconnect(); +} + +LLEventPump& LLLogin::getEventPump() +{ + return mImpl->getEventPump(); +} + +// The following is the list of important functions that happen in the +// current login process that we want to move to this login module. + +// The list associates to event with the original idle_startup() 'STATE'. + +// Rewrite URIs + // State_LOGIN_AUTH_INIT +// Given a vector of login uris (usually just one), perform a dns lookup for the +// SRV record from each URI. I think this is used to distribute login requests to +// a single URI to multiple hosts. +// This is currently a synchronous action. (See LLSRV::rewriteURI() implementation) +// On dns lookup error the output uris == the input uris. +// +// Input: A vector of login uris +// Output: A vector of login uris +// +// Code: +// std::vector<std::string> uris; +// LLViewerLogin::getInstance()->getLoginURIs(uris); +// std::vector<std::string>::const_iterator iter, end; +// for (iter = uris.begin(), end = uris.end(); iter != end; ++iter) +// { +// std::vector<std::string> rewritten; +// rewritten = LLSRV::rewriteURI(*iter); +// sAuthUris.insert(sAuthUris.end(), +// rewritten.begin(), rewritten.end()); +// } +// sAuthUriNum = 0; + +// Authenticate +// STATE_LOGIN_AUTHENTICATE +// Connect to the login server, presumably login.cgi, requesting the login +// and a slew of related initial connection information. +// This is an asynch action. The final response, whether success or error +// is handled by STATE_LOGIN_PROCESS_REPONSE. +// There is no immediate error or output from this call. +// +// Input: +// URI +// Credentials (first, last, password) +// Start location +// Bool Flags: +// skip optional update +// accept terms of service +// accept critical message +// Last exec event. (crash state of previous session) +// requested optional data (inventory skel, initial outfit, etc.) +// local mac address +// viewer serial no. (md5 checksum?) + +//sAuthUriNum = llclamp(sAuthUriNum, 0, (S32)sAuthUris.size()-1); +//LLUserAuth::getInstance()->authenticate( +// sAuthUris[sAuthUriNum], +// auth_method, +// firstname, +// lastname, +// password, // web_login_key, +// start.str(), +// gSkipOptionalUpdate, +// gAcceptTOS, +// gAcceptCriticalMessage, +// gLastExecEvent, +// requested_options, +// hashed_mac_string, +// LLAppViewer::instance()->getSerialNumber()); + +// +// Download the Response +// STATE_LOGIN_NO_REPONSE_YET and STATE_LOGIN_DOWNLOADING +// I had assumed that this was default behavior of the message system. However... +// During login, the message system is checked only by these two states in idle_startup(). +// I guess this avoids the overhead of checking network messages for those login states +// that don't need to do so, but geez! +// There are two states to do this one function just to update the login +// status text from 'Logging In...' to 'Downloading...' +// + +// +// Handle Login Response +// STATE_LOGIN_PROCESS_RESPONSE +// +// This state handle the result of the request to login. There is a metric ton of +// code in this case. This state will transition to: +// STATE_WORLD_INIT, on success. +// STATE_AUTHENTICATE, on failure. +// STATE_UPDATE_CHECK, to handle user during login interaction like TOS display. +// +// Much of the code in this case belongs on the viewer side of the fence and not in login. +// Login should probably return with a couple of events, success and failure. +// Failure conditions can be specified in the events data pacet to allow the viewer +// to re-engauge login as is appropriate. (Or should there be multiple failure messages?) +// Success is returned with the data requested from the login. According to OGP specs +// there may be intermediate steps before reaching this result in future login +// implementations. |