summaryrefslogtreecommitdiff
path: root/indra/newview/lllogchat.cpp
blob: 16b13d9218b1c88683cebff6ed65ae0ad3f4950b (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
538
539
540
541
/** 
 * @file lllogchat.cpp
 * @brief LLLogChat class implementation
 *
 * $LicenseInfo:firstyear=2002&license=viewergpl$
 * 
 * Copyright (c) 2002-2009, 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 "llviewerprecompiledheaders.h"

#include "llagent.h"
#include "llagentui.h"
#include "lllogchat.h"
#include "lltrans.h"
#include "llviewercontrol.h"

#include "llinstantmessage.h"
#include "llsingleton.h" // for LLSingleton

#include <boost/algorithm/string/trim.hpp>
#include <boost/algorithm/string/replace.hpp>
#include <boost/regex.hpp>
#include <boost/regex/v4/match_results.hpp>

#include <boost/date_time/gregorian/gregorian.hpp>
#include <boost/date_time/posix_time/posix_time.hpp>
#include <boost/date_time/local_time_adjustor.hpp>

const S32 LOG_RECALL_SIZE = 2048;

const static std::string IM_TIME("time");
const static std::string IM_TEXT("message");
const static std::string IM_FROM("from");
const static std::string IM_FROM_ID("from_id");
const static std::string IM_SEPARATOR(": ");

const static std::string NEW_LINE("\n");
const static std::string NEW_LINE_SPACE_PREFIX("\n ");
const static std::string TWO_SPACES("  ");
const static std::string MULTI_LINE_PREFIX(" ");

/**
 *  Chat log lines - timestamp and name are optional but message text is mandatory.
 *
 *  Typical plain text chat log lines:
 *
 *  SuperCar: You aren't the owner
 *  [2:59]  SuperCar: You aren't the owner
 *  [2009/11/20 3:00]  SuperCar: You aren't the owner
 *  Katar Ivercourt is Offline
 *  [3:00]  Katar Ivercourt is Offline
 *  [2009/11/20 3:01]  Corba ProductEngine is Offline
 *
 * Note: "You" was used as an avatar names in viewers of previous versions
 */
const static boost::regex TIMESTAMP_AND_STUFF("^(\\[\\d{4}/\\d{1,2}/\\d{1,2}\\s+\\d{1,2}:\\d{2}\\]\\s+|\\[\\d{1,2}:\\d{2}\\]\\s+)?(.*)$");

/**
 *  Regular expression suitable to match names like
 *  "You", "Second Life", "Igor ProductEngine", "Object", "Mega House"
 */
const static boost::regex NAME_AND_TEXT("(You:|Second Life:|[^\\s:]+\\s*[:]{1}|\\S+\\s+[^\\s:]+[:]{1})?(\\s*)(.*)");

//is used to parse complex object names like "Xstreet SL Terminal v2.2.5 st"
const static std::string NAME_TEXT_DIVIDER(": ");

// is used for timestamps adjusting
const static char* DATE_FORMAT("%Y/%m/%d %H:%M");
const static char* TIME_FORMAT("%H:%M");

const static int IDX_TIMESTAMP = 1;
const static int IDX_STUFF = 2;
const static int IDX_NAME = 1;
const static int IDX_TEXT = 3;

using namespace boost::posix_time;
using namespace boost::gregorian;

class LLLogChatTimeScanner: public LLSingleton<LLLogChatTimeScanner>
{
public:
	LLLogChatTimeScanner()
	{
		// Note, date/time facets will be destroyed by string streams
		mDateStream.imbue(std::locale(mDateStream.getloc(), new date_input_facet(DATE_FORMAT)));
		mTimeStream.imbue(std::locale(mTimeStream.getloc(), new time_facet(TIME_FORMAT)));
		mTimeStream.imbue(std::locale(mTimeStream.getloc(), new time_input_facet(DATE_FORMAT)));
	}

	date getTodayPacificDate()
	{
		typedef	boost::date_time::local_adjustor<ptime, -8, no_dst> pst;
		typedef boost::date_time::local_adjustor<ptime, -7, no_dst> pdt;
		time_t t_time = time(NULL);
		ptime p_time = LLStringOps::getPacificDaylightTime()
			? pdt::utc_to_local(from_time_t(t_time))
			: pst::utc_to_local(from_time_t(t_time));
		struct tm s_tm = to_tm(p_time);
		return date_from_tm(s_tm);
	}

	void checkAndCutOffDate(std::string& time_str)
	{
		// Cuts off the "%Y/%m/%d" from string for todays timestamps.
		// Assume that passed string has at least "%H:%M" time format.
		date log_date(not_a_date_time);
		date today(getTodayPacificDate());

		// Parse the passed date
		mDateStream.str(LLStringUtil::null);
		mDateStream << time_str;
		mDateStream >> log_date;
		mDateStream.clear();

		days zero_days(0);
		days days_alive = today - log_date;

		if ( days_alive == zero_days )
		{
			// Yep, today's so strip "%Y/%m/%d" info
			ptime stripped_time(not_a_date_time);

			mTimeStream.str(LLStringUtil::null);
			mTimeStream << time_str;
			mTimeStream >> stripped_time;
			mTimeStream.clear();

			time_str.clear();

			mTimeStream.str(LLStringUtil::null);
			mTimeStream << stripped_time;
			mTimeStream >> time_str;
			mTimeStream.clear();
		}

		LL_DEBUGS("LLChatLogParser")
			<< " log_date: "
			<< log_date
			<< " today: "
			<< today
			<< " days alive: "
			<< days_alive
			<< " new time: "
			<< time_str
			<< LL_ENDL;
	}


private:
	std::stringstream mDateStream;
	std::stringstream mTimeStream;
};

//static
std::string LLLogChat::makeLogFileName(std::string filename)
{
	filename = cleanFileName(filename);
	filename = gDirUtilp->getExpandedFilename(LL_PATH_PER_ACCOUNT_CHAT_LOGS,filename);
	filename += ".txt";
	return filename;
}

std::string LLLogChat::cleanFileName(std::string filename)
{
	std::string invalidChars = "\"\'\\/?*:<>|";
	std::string::size_type position = filename.find_first_of(invalidChars);
	while (position != filename.npos)
	{
		filename[position] = '_';
		position = filename.find_first_of(invalidChars, position);
	}
	return filename;
}

std::string LLLogChat::timestamp(bool withdate)
{
	time_t utc_time;
	utc_time = time_corrected();

	std::string timeStr;
	LLSD substitution;
	substitution["datetime"] = (S32) utc_time;

	if (withdate)
	{
		timeStr = "["+LLTrans::getString ("TimeYear")+"]/["
		          +LLTrans::getString ("TimeMonth")+"]/["
				  +LLTrans::getString ("TimeDay")+"] ["
				  +LLTrans::getString ("TimeHour")+"]:["
				  +LLTrans::getString ("TimeMin")+"]";
	}
	else
	{
		timeStr = "[" + LLTrans::getString("TimeHour") + "]:["
			      + LLTrans::getString ("TimeMin")+"]";
	}

	LLStringUtil::format (timeStr, substitution);
	return timeStr;
}


//static
void LLLogChat::saveHistory(const std::string& filename,
			    const std::string& from,
			    const LLUUID& from_id,
			    const std::string& line)
{
	std::string tmp_filename = filename;
	LLStringUtil::trim(tmp_filename);
	if (tmp_filename.empty())
	{
		std::string warn = "Chat history filename [" + filename + "] is empty!";
		llwarning(warn, 666);
		llassert(tmp_filename.size());
		return;
	}
	
	llofstream file (LLLogChat::makeLogFileName(filename), std::ios_base::app);
	if (!file.is_open())
	{
		llwarns << "Couldn't open chat history log! - " + filename << llendl;
		return;
	}

	LLSD item;

	if (gSavedPerAccountSettings.getBOOL("LogTimestamp"))
		 item["time"] = LLLogChat::timestamp(gSavedPerAccountSettings.getBOOL("LogTimestampDate"));

	item["from_id"]	= from_id;
	item["message"]	= line;

	//adding "Second Life:" for all system messages to make chat log history parsing more reliable
	if (from.empty() && from_id.isNull())
	{
		item["from"] = SYSTEM_FROM; 
	}
	else
	{
		item["from"] = from;
	}

	file << LLChatLogFormatter(item) << std::endl;

	file.close();
}

void LLLogChat::loadHistory(const std::string& filename, void (*callback)(ELogLineType, const LLSD&, void*), void* userdata)
{
	if(!filename.size())
	{
		llwarns << "Filename is Empty!" << llendl;
		return ;
	}
        
	LLFILE* fptr = LLFile::fopen(makeLogFileName(filename), "r");		/*Flawfinder: ignore*/
	if (!fptr)
	{
		callback(LOG_EMPTY, LLSD(), userdata);
		return;			//No previous conversation with this name.
	}
	else
	{
		char buffer[LOG_RECALL_SIZE];		/*Flawfinder: ignore*/
		char *bptr;
		S32 len;
		bool firstline=TRUE;

		if ( fseek(fptr, (LOG_RECALL_SIZE - 1) * -1  , SEEK_END) )		
		{	//File is smaller than recall size.  Get it all.
			firstline = FALSE;
			if ( fseek(fptr, 0, SEEK_SET) )
			{
				fclose(fptr);
				return;
			}
		}

		while ( fgets(buffer, LOG_RECALL_SIZE, fptr)  && !feof(fptr) ) 
		{
			len = strlen(buffer) - 1;		/*Flawfinder: ignore*/
			for ( bptr = (buffer + len); (*bptr == '\n' || *bptr == '\r') && bptr>buffer; bptr--)	*bptr='\0';
			
			if (!firstline)
			{
				LLSD item;
				std::string line(buffer);
				std::istringstream iss(line);
				
				if (!LLChatLogParser::parse(line, item))
				{
					item["message"]	= line;
					callback(LOG_LINE, item, userdata);
				}
				else
				{
					callback(LOG_LLSD, item, userdata);
				}
			}
			else
			{
				firstline = FALSE;
			}
		}
		callback(LOG_END, LLSD(), userdata);
		
		fclose(fptr);
	}
}

void append_to_last_message(std::list<LLSD>& messages, const std::string& line)
{
	if (!messages.size()) return;

	std::string im_text = messages.back()[IM_TEXT].asString();
	im_text.append(line);
	messages.back()[IM_TEXT] = im_text;
}

void LLLogChat::loadAllHistory(const std::string& file_name, std::list<LLSD>& messages)
{
	if (file_name.empty())
	{
		llwarns << "Session name is Empty!" << llendl;
		return ;
	}

	LLFILE* fptr = LLFile::fopen(makeLogFileName(file_name), "r");		/*Flawfinder: ignore*/
	if (!fptr) return;	//No previous conversation with this name.

	char buffer[LOG_RECALL_SIZE];		/*Flawfinder: ignore*/
	char *bptr;
	S32 len;
	bool firstline = TRUE;

	if (fseek(fptr, (LOG_RECALL_SIZE - 1) * -1  , SEEK_END))
	{	//File is smaller than recall size.  Get it all.
		firstline = FALSE;
		if (fseek(fptr, 0, SEEK_SET))
		{
			fclose(fptr);
			return;
		}
	}

	while (fgets(buffer, LOG_RECALL_SIZE, fptr)  && !feof(fptr)) 
	{
		len = strlen(buffer) - 1;		/*Flawfinder: ignore*/
		for (bptr = (buffer + len); (*bptr == '\n' || *bptr == '\r') && bptr>buffer; bptr--)	*bptr='\0';
		
		if (firstline)
		{
			firstline = FALSE;
			continue;
		}

		std::string line(buffer);

		//updated 1.23 plaint text log format requires a space added before subsequent lines in a multilined message
		if (' ' == line[0])
		{
			line.erase(0, MULTI_LINE_PREFIX.length());
			append_to_last_message(messages, '\n' + line);
		}
		else if (0 == len && ('\n' == line[0] || '\r' == line[0]))
		{
			//to support old format's multilined messages with new lines used to divide paragraphs
			append_to_last_message(messages, line);
		}
		else
		{
			LLSD item;
			if (!LLChatLogParser::parse(line, item))
			{
				item[IM_TEXT] = line;
			}
			messages.push_back(item);
		}
	}
	fclose(fptr);
}

//*TODO mark object's names in a special way so that they will be distinguishable form avatar name 
//which are more strict by its nature (only firstname and secondname)
//Example, an object's name can be writen like "Object <actual_object's_name>"
void LLChatLogFormatter::format(const LLSD& im, std::ostream& ostr) const
{
	if (!im.isMap())
	{
		llwarning("invalid LLSD type of an instant message", 0);
		return;
	}

	if (im[IM_TIME].isDefined())
	{
		std::string timestamp = im[IM_TIME].asString();
		boost::trim(timestamp);
		ostr << '[' << timestamp << ']' << TWO_SPACES;
	}

	//*TODO mark object's names in a special way so that they will be distinguishable form avatar name 
	//which are more strict by its nature (only firstname and secondname)
	//Example, an object's name can be writen like "Object <actual_object's_name>"
	if (im[IM_FROM].isDefined())
	{
		std::string from = im[IM_FROM].asString();
		boost::trim(from);
		if (from.size())
		{
			ostr << from << IM_SEPARATOR;
		}
	}
	
	if (im[IM_TEXT].isDefined())
	{
		std::string im_text = im[IM_TEXT].asString();

		//multilined text will be saved with prepended spaces
		boost::replace_all(im_text, NEW_LINE, NEW_LINE_SPACE_PREFIX);
		ostr << im_text;
	}
}

bool LLChatLogParser::parse(std::string& raw, LLSD& im)
{
	if (!raw.length()) return false;
	
	im = LLSD::emptyMap();

	//matching a timestamp
	boost::match_results<std::string::const_iterator> matches;
	if (!boost::regex_match(raw, matches, TIMESTAMP_AND_STUFF)) return false;
	
	bool has_timestamp = matches[IDX_TIMESTAMP].matched;
	if (has_timestamp)
	{
		//timestamp was successfully parsed
		std::string timestamp = matches[IDX_TIMESTAMP];
		boost::trim(timestamp);
		timestamp.erase(0, 1);
		timestamp.erase(timestamp.length()-1, 1);
		LLLogChatTimeScanner::instance().checkAndCutOffDate(timestamp);
		im[IM_TIME] = timestamp;
	}
	else
	{
		//timestamp is optional
		im[IM_TIME] = "";
	}

	bool has_stuff = matches[IDX_STUFF].matched;
	if (!has_stuff)
	{
		return false;  //*TODO should return false or not?
	}

	//matching a name and a text
	std::string stuff = matches[IDX_STUFF];
	boost::match_results<std::string::const_iterator> name_and_text;
	if (!boost::regex_match(stuff, name_and_text, NAME_AND_TEXT)) return false;
	
	bool has_name = name_and_text[IDX_NAME].matched;
	std::string name = name_and_text[IDX_NAME];

	//we don't need a name/text separator
	if (has_name && name.length() && name[name.length()-1] == ':')
	{
		name.erase(name.length()-1, 1);
	}

	if (!has_name || name == SYSTEM_FROM)
	{
		//name is optional too
		im[IM_FROM] = SYSTEM_FROM;
		im[IM_FROM_ID] = LLUUID::null;
	}

	//possibly a case of complex object names consisting of 3+ words
	if (!has_name)
	{
		U32 divider_pos = stuff.find(NAME_TEXT_DIVIDER);
		if (divider_pos != std::string::npos && divider_pos < (stuff.length() - NAME_TEXT_DIVIDER.length()))
		{
			im[IM_FROM] = stuff.substr(0, divider_pos);
			im[IM_TEXT] = stuff.substr(divider_pos + NAME_TEXT_DIVIDER.length());
			return true;
		}
	}

	if (!has_name)
	{
		//text is mandatory
		im[IM_TEXT] = stuff;
		return true; //parse as a message from Second Life
	}
	
	bool has_text = name_and_text[IDX_TEXT].matched;
	if (!has_text) return false;

	//for parsing logs created in very old versions of a viewer
	if (name == "You")
	{
		std::string agent_name;
		LLAgentUI::buildFullname(agent_name);
		im[IM_FROM] = agent_name;
		im[IM_FROM_ID] = gAgentID;
	}
	else
	{
		im[IM_FROM] = name;
	}
	

	im[IM_TEXT] = name_and_text[IDX_TEXT];
	return true;  //parsed name and message text, maybe have a timestamp too
}