summaryrefslogtreecommitdiff
path: root/indra/newview/llxmlrpclistener.cpp
blob: 97a9eb7f5fc557accfd4d7fc555f8098f0f8f6e7 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
/**
 * @file   llxmlrpclistener.cpp
 * @author Nat Goodspeed
 * @date   2009-03-18
 * @brief  Implementation for llxmlrpclistener.
 * 
 * $LicenseInfo:firstyear=2009&license=viewerlgpl$
 * Second Life Viewer Source Code
 * Copyright (C) 2010, Linden Research, Inc.
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation;
 * version 2.1 of the License only.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 * 
 * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
 * $/LicenseInfo$
 */


// Precompiled header
#include "llviewerprecompiledheaders.h"
// associated header
#include "llxmlrpclistener.h"
// STL headers
#include <map>
#include <set>
// std headers
// external library headers
#include <boost/scoped_ptr.hpp>
#include <boost/range.hpp>          // boost::begin(), boost::end()
#include <xmlrpc-epi/xmlrpc.h>
#include "curl/curl.h"

// other Linden headers
#include "llerror.h"
#include "stringize.h"
#include "llxmlrpctransaction.h"
#include "llsecapi.h"

#if LL_WINDOWS
#pragma warning (disable : 4355) // 'this' used in initializer list: yes, intentionally
#endif

template <typename STATUS>
class StatusMapperBase
{
    typedef std::map<STATUS, std::string> MapType;

public:
    StatusMapperBase(const std::string& desc):
        mDesc(desc)
    {}

    std::string lookup(STATUS status) const
    {
        typename MapType::const_iterator found = mMap.find(status);
        if (found != mMap.end())
        {
            return found->second;
        }
        return STRINGIZE("<unknown " << mDesc << " " << status << ">");
    }

protected:
    std::string mDesc;
    MapType mMap;
};

class StatusMapper: public StatusMapperBase<LLXMLRPCTransaction::EStatus>
{
public:
    StatusMapper(): StatusMapperBase<LLXMLRPCTransaction::EStatus>("Status")
    {
		mMap[LLXMLRPCTransaction::StatusNotStarted]  = "NotStarted";
		mMap[LLXMLRPCTransaction::StatusStarted]     = "Started";
		mMap[LLXMLRPCTransaction::StatusDownloading] = "Downloading";
		mMap[LLXMLRPCTransaction::StatusComplete]    = "Complete";
		mMap[LLXMLRPCTransaction::StatusCURLError]   = "CURLError";
		mMap[LLXMLRPCTransaction::StatusXMLRPCError] = "XMLRPCError";
		mMap[LLXMLRPCTransaction::StatusOtherError]  = "OtherError";
    }
};

static const StatusMapper sStatusMapper;

class CURLcodeMapper: public StatusMapperBase<CURLcode>
{
public:
    CURLcodeMapper(): StatusMapperBase<CURLcode>("CURLcode")
    {
        // from curl.h
// skip the "CURLE_" prefix for each of these strings
#define def(sym) (mMap[sym] = #sym + 6)
        def(CURLE_OK);
        def(CURLE_UNSUPPORTED_PROTOCOL);    /* 1 */
        def(CURLE_FAILED_INIT);             /* 2 */
        def(CURLE_URL_MALFORMAT);           /* 3 */
        def(CURLE_URL_MALFORMAT_USER);      /* 4 - NOT USED */
        def(CURLE_COULDNT_RESOLVE_PROXY);   /* 5 */
        def(CURLE_COULDNT_RESOLVE_HOST);    /* 6 */
        def(CURLE_COULDNT_CONNECT);         /* 7 */
        def(CURLE_FTP_WEIRD_SERVER_REPLY);  /* 8 */
        def(CURLE_FTP_ACCESS_DENIED);       /* 9 a service was denied by the FTP server
                                          due to lack of access - when login fails
                                          this is not returned. */
        def(CURLE_FTP_USER_PASSWORD_INCORRECT); /* 10 - NOT USED */
        def(CURLE_FTP_WEIRD_PASS_REPLY);    /* 11 */
        def(CURLE_FTP_WEIRD_USER_REPLY);    /* 12 */
        def(CURLE_FTP_WEIRD_PASV_REPLY);    /* 13 */
        def(CURLE_FTP_WEIRD_227_FORMAT);    /* 14 */
        def(CURLE_FTP_CANT_GET_HOST);       /* 15 */
        def(CURLE_FTP_CANT_RECONNECT);      /* 16 */
        def(CURLE_FTP_COULDNT_SET_BINARY);  /* 17 */
        def(CURLE_PARTIAL_FILE);            /* 18 */
        def(CURLE_FTP_COULDNT_RETR_FILE);   /* 19 */
        def(CURLE_FTP_WRITE_ERROR);         /* 20 */
        def(CURLE_FTP_QUOTE_ERROR);         /* 21 */
        def(CURLE_HTTP_RETURNED_ERROR);     /* 22 */
        def(CURLE_WRITE_ERROR);             /* 23 */
        def(CURLE_MALFORMAT_USER);          /* 24 - NOT USED */
        def(CURLE_UPLOAD_FAILED);           /* 25 - failed upload "command" */
        def(CURLE_READ_ERROR);              /* 26 - could open/read from file */
        def(CURLE_OUT_OF_MEMORY);           /* 27 */
        /* Note: CURLE_OUT_OF_MEMORY may sometimes indicate a conversion error
                 instead of a memory allocation error if CURL_DOES_CONVERSIONS
                 is defined
        */
        def(CURLE_OPERATION_TIMEOUTED);     /* 28 - the timeout time was reached */
        def(CURLE_FTP_COULDNT_SET_ASCII);   /* 29 - TYPE A failed */
        def(CURLE_FTP_PORT_FAILED);         /* 30 - FTP PORT operation failed */
        def(CURLE_FTP_COULDNT_USE_REST);    /* 31 - the REST command failed */
        def(CURLE_FTP_COULDNT_GET_SIZE);    /* 32 - the SIZE command failed */
        def(CURLE_HTTP_RANGE_ERROR);        /* 33 - RANGE "command" didn't work */
        def(CURLE_HTTP_POST_ERROR);         /* 34 */
        def(CURLE_SSL_CONNECT_ERROR);       /* 35 - wrong when connecting with SSL */
        def(CURLE_BAD_DOWNLOAD_RESUME);     /* 36 - couldn't resume download */
        def(CURLE_FILE_COULDNT_READ_FILE);  /* 37 */
        def(CURLE_LDAP_CANNOT_BIND);        /* 38 */
        def(CURLE_LDAP_SEARCH_FAILED);      /* 39 */
        def(CURLE_LIBRARY_NOT_FOUND);       /* 40 */
        def(CURLE_FUNCTION_NOT_FOUND);      /* 41 */
        def(CURLE_ABORTED_BY_CALLBACK);     /* 42 */
        def(CURLE_BAD_FUNCTION_ARGUMENT);   /* 43 */
        def(CURLE_BAD_CALLING_ORDER);       /* 44 - NOT USED */
        def(CURLE_INTERFACE_FAILED);        /* 45 - CURLOPT_INTERFACE failed */
        def(CURLE_BAD_PASSWORD_ENTERED);    /* 46 - NOT USED */
        def(CURLE_TOO_MANY_REDIRECTS );     /* 47 - catch endless re-direct loops */
        def(CURLE_UNKNOWN_TELNET_OPTION);   /* 48 - User specified an unknown option */
        def(CURLE_TELNET_OPTION_SYNTAX );   /* 49 - Malformed telnet option */
        def(CURLE_OBSOLETE);                /* 50 - NOT USED */
        def(CURLE_SSL_PEER_CERTIFICATE);    /* 51 - peer's certificate wasn't ok */
        def(CURLE_GOT_NOTHING);             /* 52 - when this is a specific error */
        def(CURLE_SSL_ENGINE_NOTFOUND);     /* 53 - SSL crypto engine not found */
        def(CURLE_SSL_ENGINE_SETFAILED);    /* 54 - can not set SSL crypto engine as
                                          default */
        def(CURLE_SEND_ERROR);              /* 55 - failed sending network data */
        def(CURLE_RECV_ERROR);              /* 56 - failure in receiving network data */
        def(CURLE_SHARE_IN_USE);            /* 57 - share is in use */
        def(CURLE_SSL_CERTPROBLEM);         /* 58 - problem with the local certificate */
        def(CURLE_SSL_CIPHER);              /* 59 - couldn't use specified cipher */
        def(CURLE_SSL_CACERT);              /* 60 - problem with the CA cert (path?) */
        def(CURLE_BAD_CONTENT_ENCODING);    /* 61 - Unrecognized transfer encoding */
        def(CURLE_LDAP_INVALID_URL);        /* 62 - Invalid LDAP URL */
        def(CURLE_FILESIZE_EXCEEDED);       /* 63 - Maximum file size exceeded */
        def(CURLE_FTP_SSL_FAILED);          /* 64 - Requested FTP SSL level failed */
        def(CURLE_SEND_FAIL_REWIND);        /* 65 - Sending the data requires a rewind
                                          that failed */
        def(CURLE_SSL_ENGINE_INITFAILED);   /* 66 - failed to initialise ENGINE */
        def(CURLE_LOGIN_DENIED);            /* 67 - user); password or similar was not
                                          accepted and we failed to login */
        def(CURLE_TFTP_NOTFOUND);           /* 68 - file not found on server */
        def(CURLE_TFTP_PERM);               /* 69 - permission problem on server */
        def(CURLE_TFTP_DISKFULL);           /* 70 - out of disk space on server */
        def(CURLE_TFTP_ILLEGAL);            /* 71 - Illegal TFTP operation */
        def(CURLE_TFTP_UNKNOWNID);          /* 72 - Unknown transfer ID */
        def(CURLE_TFTP_EXISTS);             /* 73 - File already exists */
        def(CURLE_TFTP_NOSUCHUSER);         /* 74 - No such user */
        def(CURLE_CONV_FAILED);             /* 75 - conversion failed */
        def(CURLE_CONV_REQD);               /* 76 - caller must register conversion
                                          callbacks using curl_easy_setopt options
                                          CURLOPT_CONV_FROM_NETWORK_FUNCTION);
                                          CURLOPT_CONV_TO_NETWORK_FUNCTION); and
                                          CURLOPT_CONV_FROM_UTF8_FUNCTION */
        def(CURLE_SSL_CACERT_BADFILE);      /* 77 - could not load CACERT file); missing
                                          or wrong format */
        def(CURLE_REMOTE_FILE_NOT_FOUND);   /* 78 - remote file not found */
        def(CURLE_SSH);                     /* 79 - error from the SSH layer); somewhat
                                          generic so the error message will be of
                                          interest when this has happened */

        def(CURLE_SSL_SHUTDOWN_FAILED);     /* 80 - Failed to shut down the SSL
                                          connection */
#undef  def
    }
};

static const CURLcodeMapper sCURLcodeMapper;

LLXMLRPCListener::LLXMLRPCListener(const std::string& pumpname):
    mBoundListener(LLEventPumps::instance().
                   obtain(pumpname).
                   listen("LLXMLRPCListener", boost::bind(&LLXMLRPCListener::process, this, _1)))
{
}

/**
 * Capture an outstanding LLXMLRPCTransaction and poll it periodically until
 * done.
 *
 * The sequence is:
 * # Instantiate Poller, which instantiates, populates and initiates an
 *   LLXMLRPCTransaction. Poller self-registers on the LLEventPump named
 *   "mainloop".
 * # "mainloop" is conventionally pumped once per frame. On each such call,
 *   Poller checks its LLXMLRPCTransaction for completion.
 * # When the LLXMLRPCTransaction completes, Poller collects results (if any)
 *   and sends notification.
 * # The tricky part: Poller frees itself (and thus its LLXMLRPCTransaction)
 *   when done. The only external reference to it is the connection to the
 *   "mainloop" LLEventPump.
 */
class Poller
{
public:
    /// Validate the passed request for required fields, then use it to
    /// populate an XMLRPC_REQUEST and an associated LLXMLRPCTransaction. Send
    /// the request.
    Poller(const LLSD& command):
        mReqID(command),
        mUri(command["uri"]),
        mMethod(command["method"]),
        mReplyPump(command["reply"])
    {
        // LL_ERRS if any of these are missing
        const char* required[] = { "uri", "method", "reply" };
        // optional: "options" (array of string)
        // Validate the request
        std::set<std::string> missing;
        for (const char** ri = boost::begin(required); ri != boost::end(required); ++ri)
        {
            // If the command does not contain this required entry, add it to 'missing'.
            if (! command.has(*ri))
            {
                missing.insert(*ri);
            }
        }
        if (! missing.empty())
        {
            LL_ERRS("LLXMLRPCListener") << mMethod << " request missing params: ";
            const char* separator = "";
            for (std::set<std::string>::const_iterator mi(missing.begin()), mend(missing.end());
                 mi != mend; ++mi)
            {
                LL_CONT << separator << *mi;
                separator = ", ";
            }
            LL_CONT << LL_ENDL;
        }

        // Build the XMLRPC request.
        XMLRPC_REQUEST request = XMLRPC_RequestNew();
        XMLRPC_RequestSetMethodName(request, mMethod.c_str());
        XMLRPC_RequestSetRequestType(request, xmlrpc_request_call);
        XMLRPC_VALUE xparams = XMLRPC_CreateVector(NULL, xmlrpc_vector_struct);
        LLSD params(command["params"]);
        if (params.isMap())
        {
            for (LLSD::map_const_iterator pi(params.beginMap()), pend(params.endMap());
                 pi != pend; ++pi)
            {
                std::string name(pi->first);
                LLSD param(pi->second);
                if (param.isString())
                {
                    XMLRPC_VectorAppendString(xparams, name.c_str(), param.asString().c_str(), 0);
                }
                else if (param.isInteger() || param.isBoolean())
                {
                    XMLRPC_VectorAppendInt(xparams, name.c_str(), param.asInteger());
                }
                else if (param.isReal())
                {
                    XMLRPC_VectorAppendDouble(xparams, name.c_str(), param.asReal());
                }
                else
                {
                    LL_ERRS("LLXMLRPCListener") << mMethod << " request param "
                                                << name << " has unknown type: " << param << LL_ENDL;
                }
            }
        }
        LLSD options(command["options"]);
        if (options.isArray())
        {
            XMLRPC_VALUE xoptions = XMLRPC_CreateVector("options", xmlrpc_vector_array);
            for (LLSD::array_const_iterator oi(options.beginArray()), oend(options.endArray());
                 oi != oend; ++oi)
            {
                XMLRPC_VectorAppendString(xoptions, NULL, oi->asString().c_str(), 0);
            }
            XMLRPC_AddValueToVector(xparams, xoptions);
        }
        XMLRPC_RequestSetData(request, xparams);

        mTransaction.reset(new LLXMLRPCTransaction(mUri, request));
		mPreviousStatus = mTransaction->status(NULL);

        // Free the XMLRPC_REQUEST object and the attached data values.
        XMLRPC_RequestFree(request, 1);

        // Now ensure that we get regular callbacks to poll for completion.
        mBoundListener =
            LLEventPumps::instance().
            obtain("mainloop").
            listen(LLEventPump::inventName(), boost::bind(&Poller::poll, this, _1));

        LL_INFOS("LLXMLRPCListener") << mMethod << " request sent to " << mUri << LL_ENDL;
    }

    /// called by "mainloop" LLEventPump
    bool poll(const LLSD&)
    {
        bool done = mTransaction->process();

        CURLcode curlcode;
        LLXMLRPCTransaction::EStatus status;
        {
            // LLXMLRPCTransaction::status() is defined to accept int* rather
            // than CURLcode*. I don't feel the urge to fix the signature, but
            // we want a CURLcode rather than an int. So fetch it as a local
            // int, but then assign to a CURLcode for the remainder of this
            // method.
            int curlint;
            status = mTransaction->status(&curlint);
            curlcode = CURLcode(curlint);
        }

        LLSD data(mReqID.makeResponse());
        data["status"] = sStatusMapper.lookup(status);
        data["errorcode"] = sCURLcodeMapper.lookup(curlcode);
        data["error"] = "";
        data["transfer_rate"] = 0.0;
        LLEventPump& replyPump(LLEventPumps::instance().obtain(mReplyPump));
		if (! done)
        {
            // Not done yet, carry on.
			if (status == LLXMLRPCTransaction::StatusDownloading
				&& status != mPreviousStatus)
			{
				// If a response has been received, send the 
				// 'downloading' status if it hasn't been sent.
				replyPump.post(data);
			}

			mPreviousStatus = status;
            return false;
        }

        // Here the transaction is complete. Check status.
        data["error"] = mTransaction->statusMessage();
		data["transfer_rate"] = mTransaction->transferRate();
        LL_INFOS("LLXMLRPCListener") << mMethod << " result from " << mUri << ": status "
                                     << data["status"].asString() << ", errorcode "
                                     << data["errorcode"].asString()
                                     << " (" << data["error"].asString() << ")"
                                     << LL_ENDL;
		
		switch (curlcode)
		{
			case CURLE_SSL_PEER_CERTIFICATE:
			case CURLE_SSL_CACERT:
			{
				LLPointer<LLCertificate> error_cert(mTransaction->getErrorCert());
				if(error_cert)
				{
					data["certificate"] = error_cert->getPem();
				}
				break;
			}
			default:
				break;
		}
        // values of 'curlcode':
        // CURLE_COULDNT_RESOLVE_HOST,
        // CURLE_SSL_PEER_CERTIFICATE,
        // CURLE_SSL_CACERT,
        // CURLE_SSL_CONNECT_ERROR.
        // Given 'message', need we care?
        if (status == LLXMLRPCTransaction::StatusComplete)
        {
            // Success! Parse data.
            std::string status_string(data["status"]);
            data["responses"] = parseResponse(status_string);
            data["status"] = status_string;
        }

        // whether successful or not, send reply on requested LLEventPump
        replyPump.post(data);

        // Because mTransaction is a boost::scoped_ptr, deleting this object
        // frees our LLXMLRPCTransaction object.
        // Because mBoundListener is an LLTempBoundListener, deleting this
        // object disconnects it from "mainloop".
        // *** MUST BE LAST ***
        delete this;
        return false;
    }

private:
    /// Derived from LLUserAuth::parseResponse() and parseOptionInto()
    LLSD parseResponse(std::string& status_string)
    {
        // Extract every member into data["responses"] (a map of string
        // values).
        XMLRPC_REQUEST response = mTransaction->response();
        if (! response)
        {
            LL_DEBUGS("LLXMLRPCListener") << "No response" << LL_ENDL;
            return LLSD();
        }

        XMLRPC_VALUE param = XMLRPC_RequestGetData(response);
        if (! param)
        {
            LL_DEBUGS("LLXMLRPCListener") << "Response contains no data" << LL_ENDL;
            return LLSD();
        }

        // Now, parse everything
        return parseValues(status_string, "", param);
    }

    /**
     * Parse key/value pairs from a given XMLRPC_VALUE into an LLSD map.
     * @param key_pfx Used to describe a given key in log messages. At top
     * level, pass "". When parsing an options array, pass the top-level key
     * name of the array plus the index of the array entry; to this we'll
     * append the subkey of interest.
     * @param param XMLRPC_VALUE iterator. At top level, pass
     * XMLRPC_RequestGetData(XMLRPC_REQUEST).
     */
    LLSD parseValues(std::string& status_string, const std::string& key_pfx, XMLRPC_VALUE param)
    {
        LLSD responses;
        for (XMLRPC_VALUE current = XMLRPC_VectorRewind(param); current;
             current = XMLRPC_VectorNext(param))
        {
            std::string key(XMLRPC_GetValueID(current));
            LL_DEBUGS("LLXMLRPCListener") << "key: " << key_pfx << key << LL_ENDL;
            XMLRPC_VALUE_TYPE_EASY type = XMLRPC_GetValueTypeEasy(current);
            if (xmlrpc_type_string == type)
            {
                LLSD::String val(XMLRPC_GetValueString(current));
                LL_DEBUGS("LLXMLRPCListener") << "val: " << val << LL_ENDL;
                responses.insert(key, val);
            }
            else if (xmlrpc_type_int == type)
            {
                LLSD::Integer val(XMLRPC_GetValueInt(current));
                LL_DEBUGS("LLXMLRPCListener") << "val: " << val << LL_ENDL;
                responses.insert(key, val);
            }
            else if (xmlrpc_type_double == type)
            {
                LLSD::Real val(XMLRPC_GetValueDouble(current));
                LL_DEBUGS("LLXMLRPCListener") << "val: " << val << LL_ENDL;
                responses.insert(key, val);
            }
            else if (xmlrpc_type_array == type)
            {
                // We expect this to be an array of submaps. Walk the array,
                // recursively parsing each submap and collecting them.
                LLSD array;
                int i = 0;          // for descriptive purposes
                for (XMLRPC_VALUE row = XMLRPC_VectorRewind(current); row;
                     row = XMLRPC_VectorNext(current), ++i)
                {
                    // Recursive call. For the lower-level key_pfx, if 'key'
                    // is "foo", pass "foo[0]:", then "foo[1]:", etc. In the
                    // nested call, a subkey "bar" will then be logged as
                    // "foo[0]:bar", and so forth.
                    // Parse the scalar subkey/value pairs from this array
                    // entry into a temp submap. Collect such submaps in 'array'.
                    array.append(parseValues(status_string,
                                             STRINGIZE(key_pfx << key << '[' << i << "]:"),
                                             row));
                }
                // Having collected an 'array' of 'submap's, insert that whole
                // 'array' as the value of this 'key'.
                responses.insert(key, array);
            }
            else if (xmlrpc_type_struct == type)
            {
                LLSD submap = parseValues(status_string,
                                          STRINGIZE(key_pfx << key << ':'),
                                          current);
                responses.insert(key, submap);
            }
            else
            {
                // whoops - unrecognized type
                LL_WARNS("LLXMLRPCListener") << "Unhandled xmlrpc type " << type << " for key "
                                             << key_pfx << key << LL_ENDL;
                responses.insert(key, STRINGIZE("<bad XMLRPC type " << type << '>'));
                status_string = "BadType";
            }
        }
        return responses;
    }

    const LLReqID mReqID;
    const std::string mUri;
    const std::string mMethod;
    const std::string mReplyPump;
    LLTempBoundListener mBoundListener;
    boost::scoped_ptr<LLXMLRPCTransaction> mTransaction;
	LLXMLRPCTransaction::EStatus mPreviousStatus; // To detect state changes.
};

bool LLXMLRPCListener::process(const LLSD& command)
{
    // Allocate a new heap Poller, but do not save a pointer to it. Poller
    // will check its own status and free itself on completion of the request.
    (new Poller(command));
    // conventional event listener return
    return false;
}