readlog.c

   1 /*
   2  * SARG Squid Analysis Report Generator      http://sarg.sourceforge.net
   3  *                                                            1998, 2015
   4  *
   5  * SARG donations:
   6  *      please look at http://sarg.sourceforge.net/donations.php
   7  * Support:
   8  *     http://sourceforge.net/projects/sarg/forums/forum/363374
   9  * ---------------------------------------------------------------------
  10  *
  11  *  This program is free software; you can redistribute it and/or modify
  12  *  it under the terms of the GNU General Public License as published by
  13  *  the Free Software Foundation; either version 2 of the License, or
  14  *  (at your option) any later version.
  15  *
  16  *  This program is distributed in the hope that it will be useful,
  17  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  *  GNU General Public License for more details.
  20  *
  21  *  You should have received a copy of the GNU General Public License
  22  *  along with this program; if not, write to the Free Software
  23  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
  24  *
  25  */
  26
  27 #include "include/conf.h"
  28 #include "include/defs.h"
  29 #include "include/readlog.h"
  30 #include "include/filelist.h"
  31
  32 #define REPORT_EVERY_X_LINES 5000
  33 #define MAX_OPEN_USER_FILES 10
  34
  35 struct userfilestruct
  36 {
  37         struct userfilestruct *next;
  38         struct userinfostruct *user;
  39         FILE *file;
  40 };
  41
  42 enum ExcludeReasonEnum
  43 {
  44         //! User name too long.
  45         ER_UserNameTooLong,
  46         //! Squid logged an incomplete query received from the client.
  47         ER_IncompleteQuery,
  48         //! Log file turned over.
  49         ER_LogfileTurnedOver,
  50         //! Excluded by exclude_string from sarg.conf.
  51         ER_ExcludeString,
  52         //! Unknown input log file format.
  53         ER_UnknownFormat,
  54         //! Line to be ignored from the input log file.
  55         ER_FormatData,
  56         //! Entry not withing the requested date range.
  57         ER_OutOfDateRange,
  58         //! Ignored week day.
  59         ER_OutOfWDayRange,
  60         //! Ignored hour.
  61         ER_OutOfHourRange,
  62         //! User is not in the include_users list.
  63         ER_User,
  64         //! HTTP code excluded by exclude_code file.
  65         ER_HttpCode,
  66         //! Invalid character found in user name.
  67         ER_InvalidUserChar,
  68         //! No URL in entry.
  69         ER_NoUrl,
  70         //! Not the IP address requested with -a.
  71         ER_UntrackedIpAddr,
  72         //! URL excluded by -c or exclude_hosts.
  73         ER_Url,
  74         //! Entry time outside of requested hour range.
  75         ER_OutOfTimeRange,
  76         //! Not the URL requested by -s.
  77         ER_UntrackedUrl,
  78         //! No user in entry.
  79         ER_NoUser,
  80         //! Not the user requested by -u.
  81         ER_UntrackedUser,
  82         //! System user.
  83         ER_SysUser,
  84         //! User ignored by exclude_users
  85         ER_IgnoredUser,
  86
  87         ER_Last //!< last entry of the list
  88 };
  89
  90 numlist weekdays = { { 0, 1, 2, 3, 4, 5, 6 }, 7 };
  91 numlist hours = { { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23 }, 24 };
  92
  93 extern char *userfile;
  94 extern FileListObject AccessLog;
  95
  96 extern const struct ReadLogProcessStruct ReadSquidLog;
  97 extern const struct ReadLogProcessStruct ReadCommonLog;
  98 extern const struct ReadLogProcessStruct ReadSargLog;
  99 extern const struct ReadLogProcessStruct ReadExtLog;
 100
 101 //! The list of the supported log formats.
 102 static const struct ReadLogProcessStruct const *LogFormats[]=
 103 {
 104         &ReadSquidLog,
 105         &ReadCommonLog,
 106         &ReadSargLog,
 107         &ReadExtLog
 108 };
 109
 110 //! The path to the sarg log file.
 111 static char SargLogFile[4096]="";
 112 //! Handle to the sarg log file. NULL if not created.
 113 static FILE *fp_log=NULL;
 114 //! The number of records read from the input logs.
 115 static long int totregsl=0;
 116 //! The number of records kept.
 117 static long int totregsg=0;
 118 //! The number of records excluded.
 119 static long int totregsx=0;
 120 //! The beginning of a linked list of user's file.
 121 static struct userfilestruct *first_user_file=NULL;
 122 //! Count the number of occurence of each input log format.
 123 static unsigned long int format_count[sizeof(LogFormats)/sizeof(*LogFormats)];
 124 //! The minimum date found in the input logs.
 125 static int mindate=0;
 126 static int maxdate=0;
 127 //! Count the number of excluded records.
 128 static unsigned long int excluded_count[ER_Last];
 129 //! Earliest date found in the log.
 130 static int EarliestDate=-1;
 131 //! The earliest date in time format.
 132 static struct tm EarliestDateTime;
 133 //! Latest date found in the log.
 134 static int LatestDate=-1;
 135 //! The latest date in time format.
 136 static struct tm LatestDateTime;
 137
 138 /*!
 139  * Initialize the memory structure needed by LogLine_Parse() to parse
 140  * a log line.
 141  *
 142  * \param log_line The structure to initialize.
 143  */
 144 void LogLine_Init(struct LogLineStruct *log_line)
 145 {
 146         log_line->current_format=NULL;
 147         log_line->current_format_idx=-1;
 148         log_line->file_name="";
 149         log_line->successive_errors=0;
 150         log_line->total_errors=0;
 151 }
 152
 153 /*!
 154  * Set the name of the log file being parsed.
 155  *
 156  * \param log_line Data structure to parse the log line.
 157  * \param file_name The name of the log file being read.
 158  */
 159 void LogLine_File(struct LogLineStruct *log_line,const char *file_name)
 160 {
 161         log_line->file_name=file_name;
 162 }
 163
 164 /*!
 165  * Parse the next line from a log file.
 166  *
 167  * \param log_line A buffer to store the data about the current parsing.
 168  * \param log_entry The variable to store the parsed data.
 169  * \param linebuf The text line read from the log file.
 170  *
 171  * \return
 172  */
 173 enum ReadLogReturnCodeEnum LogLine_Parse(struct LogLineStruct *log_line,struct ReadLogStruct *log_entry,char *linebuf)
 174 {
 175         enum ReadLogReturnCodeEnum log_entry_status=RLRC_Unknown;
 176         int x;
 177
 178         if (log_line->current_format)
 179         {
 180                 memset(log_entry,0,sizeof(*log_entry));
 181                 log_entry_status=log_line->current_format->ReadEntry(linebuf,log_entry);
 182         }
 183
 184         // find out what line format to use
 185         if (log_entry_status==RLRC_Unknown)
 186         {
 187                 for (x=0 ; x<(int)(sizeof(LogFormats)/sizeof(*LogFormats)) ; x++)
 188                 {
 189                         if (LogFormats[x]==log_line->current_format) continue;
 190                         memset(log_entry,0,sizeof(*log_entry));
 191                         log_entry_status=LogFormats[x]->ReadEntry(linebuf,log_entry);
 192                         if (log_entry_status!=RLRC_Unknown)
 193                         {
 194                                 log_line->current_format=LogFormats[x];
 195                                 log_line->current_format_idx=x;
 196                                 if (debugz>=LogLevel_Process)
 197                                 {
 198                                         /* TRANSLATORS: The argument is the log format name as translated by you. */
 199                                         debuga(__FILE__,__LINE__,_("Log format identified as \"%s\" for %s\n"),_(log_line->current_format->Name),log_line->file_name);
 200                                 }
 201                                 break;
 202                         }
 203                 }
 204                 if (x>=(int)(sizeof(LogFormats)/sizeof(*LogFormats)))
 205                 {
 206                         if (++log_line->successive_errors>NumLogSuccessiveErrors) {
 207                                 debuga(__FILE__,__LINE__,ngettext("%d consecutive error found in the input log file %s\n",
 208                                                                                                 "%d consecutive errors found in the input log file %s\n",log_line->successive_errors),log_line->successive_errors,log_line->file_name);
 209                                 exit(EXIT_FAILURE);
 210                         }
 211                         if (NumLogTotalErrors>=0 && ++log_line->total_errors>NumLogTotalErrors) {
 212                                 debuga(__FILE__,__LINE__,ngettext("%d error found in the input log file (last in %s)\n",
 213                                                                                                 "%d errors found in the input log file (last in %s)\n",log_line->total_errors),log_line->total_errors,log_line->file_name);
 214                                 exit(EXIT_FAILURE);
 215                         }
 216                         debuga(__FILE__,__LINE__,_("The following line read from %s could not be parsed and is ignored\n%s\n"),log_line->file_name,linebuf);
 217                 }
 218                 else
 219                         log_line->successive_errors=0;
 220         }
 221
 222         if (log_line->current_format_idx<0 || log_line->current_format==NULL) {
 223                 debuga(__FILE__,__LINE__,_("Sarg failed to determine the format of the input log file %s\n"),log_line->file_name);
 224                 exit(EXIT_FAILURE);
 225         }
 226         if (log_entry_status==RLRC_InternalError) {
 227                 debuga(__FILE__,__LINE__,_("Internal error encountered while processing %s\nSee previous message to know the reason for that error.\n"),log_line->file_name);
 228                 exit(EXIT_FAILURE);
 229         }
 230         return(log_entry_status);
 231 }
 232
 233 /*!
 234 Read a single log file.
 235
 236 \param arq The log file name to read.
 237 */
 238 static void ReadOneLogFile(struct ReadLogDataStruct *Filter,const char *arq)
 239 {
 240         longline line;
 241         char *linebuf;
 242         char *str;
 243         char hora[30];
 244         char dia[128]="";
 245         char wuser[MAXLEN];
 246         char tmp3[MAXLEN]="";
 247         char download_url[MAXLEN];
 248         char smartfilter[MAXLEN];
 249         const char *url;
 250         const char *user;
 251         int OutputNonZero = REPORT_EVERY_X_LINES ;
 252         int idata=0;
 253         int x;
 254         int hmr;
 255         int nopen;
 256         int maxopenfiles=MAX_OPEN_USER_FILES;
 257         unsigned long int recs1=0UL;
 258         unsigned long int recs2=0UL;
 259         FILE *fp_in=NULL;
 260         bool from_pipe;
 261         bool from_stdin;
 262         bool download_flag=false;
 263         bool id_is_ip;
 264         enum ReadLogReturnCodeEnum log_entry_status;
 265         struct stat logstat;
 266         struct getwordstruct gwarea;
 267         struct userfilestruct *prev_ufile;
 268         struct userinfostruct *uinfo;
 269         struct userfilestruct *ufile;
 270         struct userfilestruct *ufile1;
 271         struct ReadLogStruct log_entry;
 272         struct LogLineStruct log_line;
 273
 274         LogLine_Init(&log_line);
 275         LogLine_File(&log_line,arq);
 276         for (x=0 ; x<sizeof(LogFormats)/sizeof(*LogFormats) ; x++)
 277                 if (LogFormats[x]->NewFile)
 278                         LogFormats[x]->NewFile(arq);
 279
 280         if (arq[0]=='-' && arq[1]=='\0') {
 281                 if(debug)
 282                         debuga(__FILE__,__LINE__,_("Reading access log file: from stdin\n"));
 283                 fp_in=stdin;
 284                 from_stdin=true;
 285         } else {
 286                 if (Filter->DateRange[0]!='\0') {
 287                         if (stat(arq,&logstat)!=0) {
 288                                 debuga(__FILE__,__LINE__,_("Cannot get the modification time of input log file %s (%s). Processing it anyway\n"),arq,strerror(errno));
 289                         } else {
 290                                 struct tm *logtime=localtime(&logstat.st_mtime);
 291                                 if ((logtime->tm_year+1900)*10000+(logtime->tm_mon+1)*100+logtime->tm_mday<dfrom) {
 292                                         debuga(__FILE__,__LINE__,_("Ignoring old log file %s\n"),arq);
 293                                         return;
 294                                 }
 295                         }
 296                 }
 297                 fp_in=decomp(arq,&from_pipe);
 298                 if(fp_in==NULL) {
 299                         debuga(__FILE__,__LINE__,_("Cannot open input log file \"%s\": %s\n"),arq,strerror(errno));
 300                         exit(EXIT_FAILURE);
 301                 }
 302                 if(debug) debuga(__FILE__,__LINE__,_("Reading access log file: %s\n"),arq);
 303                 from_stdin=false;
 304         }
 305
 306         download_flag=false;
 307
 308         recs1=0UL;
 309         recs2=0UL;
 310
 311         // pre-read the file only if we have to show stats
 312         if (ShowReadStatistics && ShowReadPercent && !from_stdin && !from_pipe) {
 313                 size_t nread,i;
 314                 bool skipcr=false;
 315                 char tmp4[MAXLEN];
 316
 317                 while ((nread=fread(tmp4,1,sizeof(tmp4),fp_in))>0) {
 318                         for (i=0 ; i<nread ; i++)
 319                                 if (skipcr) {
 320                                         if (tmp4[i]!='\n' && tmp4[i]!='\r') {
 321                                                 skipcr=false;
 322                                         }
 323                                 } else {
 324                                         if (tmp4[i]=='\n' || tmp4[i]=='\r') {
 325                                                 skipcr=true;
 326                                                 recs1++;
 327                                         }
 328                                 }
 329                 }
 330                 rewind(fp_in);
 331                 printf(_("SARG: Records in file: %lu, reading: %3.2f%%"),recs1,(float) 0);
 332                 putchar('\r');
 333                 fflush( stdout ) ;
 334         }
 335
 336         if ((line=longline_create())==NULL) {
 337                 debuga(__FILE__,__LINE__,_("Not enough memory to read file \"%s\"\n"),arq);
 338                 exit(EXIT_FAILURE);
 339         }
 340
 341         while ((linebuf=longline_read(fp_in,line))!=NULL) {
 342                 lines_read++;
 343
 344                 recs2++;
 345                 if (ShowReadStatistics && --OutputNonZero<=0) {
 346                         if (recs1>0) {
 347                                 double perc = recs2 * 100. / recs1 ;
 348                                 printf(_("SARG: Records in file: %lu, reading: %3.2lf%%"),recs2,perc);
 349                         } else {
 350                                 printf(_("SARG: Records in file: %lu"),recs2);
 351                         }
 352                         putchar('\r');
 353                         fflush (stdout);
 354                         OutputNonZero = REPORT_EVERY_X_LINES ;
 355                 }
 356
 357                 /*
 358                 The following checks are retained here as I don't know to
 359                 what format they apply. They date back to pre 2.4 versions.
 360                 */
 361                 //if(blen < 58) continue; //this test conflict with the reading of the sarg log header line
 362                 if(strstr(linebuf,"HTTP/0.0") != 0) {//recorded by squid when encountering an incomplete query
 363                         excluded_count[ER_IncompleteQuery]++;
 364                         continue;
 365                 }
 366                 if(strstr(linebuf,"logfile turned over") != 0) {//reported by newsyslog
 367                         excluded_count[ER_LogfileTurnedOver]++;
 368                         continue;
 369                 }
 370
 371                 // exclude_string
 372                 if(ExcludeString[0] != '\0') {
 373                         bool exstring=false;
 374                         getword_start(&gwarea,ExcludeString);
 375                         while(strchr(gwarea.current,':') != 0) {
 376                                 if (getword_multisep(val1,sizeof(val1),&gwarea,':')<0) {
 377                                         debuga(__FILE__,__LINE__,_("Invalid record in exclusion string\n"));
 378                                         exit(EXIT_FAILURE);
 379                                 }
 380                                 if((str=(char *) strstr(linebuf,val1)) != (char *) NULL ) {
 381                                         exstring=true;
 382                                         break;
 383                                 }
 384                         }
 385                         if(!exstring && (str=(char *) strstr(linebuf,gwarea.current)) != (char *) NULL )
 386                                 exstring=true;
 387                         if(exstring) {
 388                                 excluded_count[ER_ExcludeString]++;
 389                                 continue;
 390                         }
 391                 }
 392
 393                 totregsl++;
 394                 if (debugz>=LogLevel_Data)
 395                         printf("BUF=%s\n",linebuf);
 396
 397                 // process the line
 398                 log_entry_status=LogLine_Parse(&log_line,&log_entry,linebuf);
 399                 if (log_entry_status==RLRC_Unknown)
 400                 {
 401                         excluded_count[ER_UnknownFormat]++;
 402                         continue;
 403                 }
 404                 if (log_entry_status==RLRC_Ignore) {
 405                         excluded_count[ER_FormatData]++;
 406                         continue;
 407                 }
 408                 format_count[log_line.current_format_idx]++;
 409
 410                 if (!fp_log && ParsedOutputLog[0] && log_line.current_format!=&ReadSargLog) {
 411                         if(access(ParsedOutputLog,R_OK) != 0) {
 412                                 my_mkdir(ParsedOutputLog);
 413                         }
 414                         if (snprintf(SargLogFile,sizeof(SargLogFile),"%s/sarg_temp.log",ParsedOutputLog)>=sizeof(SargLogFile)) {
 415                                 debuga(__FILE__,__LINE__,_("Path too long: "));
 416                                 debuga_more("%s/sarg_temp.log\n",ParsedOutputLog);
 417                                 exit(EXIT_FAILURE);
 418                         }
 419                         if((fp_log=MY_FOPEN(SargLogFile,"w"))==NULL) {
 420                                 debuga(__FILE__,__LINE__,_("Cannot open file \"%s\": %s\n"),SargLogFile,strerror(errno));
 421                                 exit(EXIT_FAILURE);
 422                         }
 423                         fputs("*** SARG Log ***\n",fp_log);
 424                 }
 425
 426                 if (log_entry.Ip==NULL) {
 427                         debuga(__FILE__,__LINE__,_("Unknown input log file format: no IP addresses\n"));
 428                         break;
 429                 }
 430                 if (log_entry.User==NULL) {
 431                         debuga(__FILE__,__LINE__,_("Unknown input log file format: no user\n"));
 432                         break;
 433                 }
 434                 if (log_entry.Url==NULL) {
 435                         debuga(__FILE__,__LINE__,_("Unknown input log file format: no URL\n"));
 436                         break;
 437                 }
 438
 439                 idata=builddia(log_entry.EntryTime.tm_mday,log_entry.EntryTime.tm_mon+1,log_entry.EntryTime.tm_year+1900);
 440                 if (debugz>=LogLevel_Data)
 441                         printf("DATE=%s IDATA=%d DFROM=%d DUNTIL=%d\n",Filter->DateRange,idata,dfrom,duntil);
 442
 443                 if (EarliestDate<0 || idata<EarliestDate) {
 444                         EarliestDate=idata;
 445                         memcpy(&EarliestDateTime,&log_entry.EntryTime,sizeof(struct tm));
 446                 }
 447                 if (LatestDate<0 || idata>LatestDate) {
 448                         LatestDate=idata;
 449                         memcpy(&LatestDateTime,&log_entry.EntryTime,sizeof(struct tm));
 450                 }
 451                 if(Filter->DateRange[0] != '\0'){
 452                         if(idata < dfrom || idata > duntil) {
 453                                 excluded_count[ER_OutOfDateRange]++;
 454                                 continue;
 455                         }
 456                 }
 457
 458                 // Record only hours usage which is required
 459                 if( bsearch( &( log_entry.EntryTime.tm_wday ), weekdays.list, weekdays.len, sizeof( int ), compar ) == NULL ) {
 460                         excluded_count[ER_OutOfWDayRange]++;
 461                         continue;
 462                 }
 463
 464                 if( bsearch( &( log_entry.EntryTime.tm_hour ), hours.list, hours.len, sizeof( int ), compar ) == NULL ) {
 465                         excluded_count[ER_OutOfHourRange]++;
 466                         continue;
 467                 }
 468
 469
 470                 if(strlen(log_entry.User) > MAX_USER_LEN) {
 471                         if (debugz>=LogLevel_Process) debuga(__FILE__,__LINE__,_("User ID too long: %s\n"),log_entry.User);
 472                         excluded_count[ER_UserNameTooLong]++;
 473                         totregsx++;
 474                         continue;
 475                 }
 476
 477                 // include_users
 478                 if(IncludeUsers[0] != '\0') {
 479                         snprintf(val1,sizeof(val1),":%s:",log_entry.User);
 480                         if((str=(char *) strstr(IncludeUsers,val1)) == (char *) NULL ) {
 481                                 excluded_count[ER_User]++;
 482                                 continue;
 483                         }
 484                 }
 485
 486                 if(vercode(log_entry.HttpCode)) {
 487                         if (debugz>=LogLevel_Process) debuga(__FILE__,__LINE__,_("Excluded code: %s\n"),log_entry.HttpCode);
 488                         excluded_count[ER_HttpCode]++;
 489                         totregsx++;
 490                         continue;
 491                 }
 492
 493                 if(testvaliduserchar(log_entry.User)) {
 494                         excluded_count[ER_InvalidUserChar]++;
 495                         continue;
 496                 }
 497
 498                 // replace any tab by a single space
 499                 for (str=log_entry.Url ; *str ; str++)
 500                         if (*str=='\t') *str=' ';
 501                 for (str=log_entry.HttpCode ; *str ; str++)
 502                         if (*str=='\t') *str=' ';
 503
 504                 if (log_line.current_format!=&ReadSargLog) {
 505                         /*
 506                         The full URL is not saved in sarg log. There is no point in testing the URL to detect
 507                         a downloaded file.
 508                         */
 509                         download_flag=is_download_suffix(log_entry.Url);
 510                         if (download_flag) {
 511                                 safe_strcpy(download_url,log_entry.Url,sizeof(download_url));
 512                         }
 513                 } else
 514                         download_flag=false;
 515
 516                 url=process_url(log_entry.Url,LongUrl);
 517                 if (!url || url[0] == '\0') {
 518                         excluded_count[ER_NoUrl]++;
 519                         continue;
 520                 }
 521
 522                 if(addr[0] != '\0'){
 523                         if(strcmp(addr,log_entry.Ip)!=0) {
 524                                 excluded_count[ER_UntrackedIpAddr]++;
 525                                 continue;
 526                         }
 527                 }
 528                 if(Filter->HostFilter) {
 529                         if(!vhexclude(url)) {
 530                                 if (debugz>=LogLevel_Data) debuga(__FILE__,__LINE__,_("Excluded site: %s\n"),url);
 531                                 excluded_count[ER_Url]++;
 532                                 totregsx++;
 533                                 continue;
 534                         }
 535                 }
 536
 537                 if(Filter->StartTime >= 0 && Filter->EndTime >= 0) {
 538                         hmr=log_entry.EntryTime.tm_hour*100+log_entry.EntryTime.tm_min;
 539                         if(hmr < Filter->StartTime || hmr > Filter->EndTime) {
 540                                 excluded_count[ER_OutOfTimeRange]++;
 541                                 continue;
 542                         }
 543                 }
 544
 545                 if(site[0] != '\0'){
 546                         if(strstr(url,site)==0) {
 547                                 excluded_count[ER_UntrackedUrl]++;
 548                                 continue;
 549                         }
 550                 }
 551
 552                 if(UserIp) {
 553                         log_entry.User=log_entry.Ip;
 554                         id_is_ip=true;
 555                 } else {
 556                         id_is_ip=false;
 557                         if ((log_entry.User[0]=='\0') || (log_entry.User[1]=='\0' && (log_entry.User[0]=='-' || log_entry.User[0]==' '))) {
 558                                 if(RecordsWithoutUser == RECORDWITHOUTUSER_IP) {
 559                                         log_entry.User=log_entry.Ip;
 560                                         id_is_ip=true;
 561                                 }
 562                                 if(RecordsWithoutUser == RECORDWITHOUTUSER_IGNORE) {
 563                                         excluded_count[ER_NoUser]++;
 564                                         continue;
 565                                 }
 566                                 if(RecordsWithoutUser == RECORDWITHOUTUSER_EVERYBODY)
 567                                         log_entry.User="everybody";
 568                         } else {
 569                                 if(NtlmUserFormat == NTLMUSERFORMAT_USER) {
 570                                         if ((str=strchr(log_entry.User,'+'))!=NULL || (str=strchr(log_entry.User,'\\'))!=NULL || (str=strchr(log_entry.User,'_'))!=NULL) {
 571                                                 log_entry.User=str+1;
 572                                         }
 573                                 }
 574                         }
 575                 }
 576
 577                 if(us[0] != '\0'){
 578                         if(strcmp(log_entry.User,us)!=0) {
 579                                 excluded_count[ER_UntrackedUser]++;
 580                                 continue;
 581                         }
 582                 }
 583
 584                 if(Filter->SysUsers) {
 585                         snprintf(wuser,sizeof(wuser),":%s:",log_entry.User);
 586                         if(strstr(userfile, wuser) == 0) {
 587                                 excluded_count[ER_SysUser]++;
 588                                 continue;
 589                         }
 590                 }
 591
 592                 if(Filter->UserFilter) {
 593                         if(!vuexclude(log_entry.User)) {
 594                                 if (debugz>=LogLevel_Process) debuga(__FILE__,__LINE__,_("Excluded user: %s\n"),log_entry.User);
 595                                 excluded_count[ER_IgnoredUser]++;
 596                                 totregsx++;
 597                                 continue;
 598                         }
 599                 }
 600
 601                 user=process_user(log_entry.User);
 602                 if (log_entry.User!=user) {
 603                         log_entry.User=user;
 604                         id_is_ip=false;
 605                 }
 606                 if (log_entry.User[0]=='\0' || (log_entry.User[1]=='\0' && (log_entry.User[0]=='-' ||
 607                                 log_entry.User[0]==' ' || log_entry.User[0]==':'))) {
 608                         excluded_count[ER_NoUser]++;
 609                         continue;
 610                 }
 611
 612                 if (log_entry.DataSize<0) log_entry.DataSize=0;
 613
 614                 if (log_entry.ElapsedTime<0) log_entry.ElapsedTime=0;
 615                 if (Filter->max_elapsed>0 && log_entry.ElapsedTime>Filter->max_elapsed) {
 616                         log_entry.ElapsedTime=0;
 617                 }
 618
 619                 if((str=(char *) strstr(linebuf, "[SmartFilter:")) != (char *) NULL ) {
 620                         fixendofline(str);
 621                         snprintf(smartfilter,sizeof(smartfilter),"\"%s\"",str+1);
 622                 } else strcpy(smartfilter,"\"\"");
 623
 624                 nopen=0;
 625                 prev_ufile=NULL;
 626                 for (ufile=first_user_file ; ufile && strcmp(log_entry.User,ufile->user->id)!=0 ; ufile=ufile->next) {
 627                         prev_ufile=ufile;
 628                         if (ufile->file) nopen++;
 629                 }
 630                 if (!ufile) {
 631                         ufile=malloc(sizeof(*ufile));
 632                         if (!ufile) {
 633                                 debuga(__FILE__,__LINE__,_("Not enough memory to store the user %s\n"),log_entry.User);
 634                                 exit(EXIT_FAILURE);
 635                         }
 636                         memset(ufile,0,sizeof(*ufile));
 637                         ufile->next=first_user_file;
 638                         first_user_file=ufile;
 639                         /*
 640                          * This id_is_ip stuff is just to store the string only once if the user is
 641                          * identified by its IP address instead of a distinct ID and IP address.
 642                          */
 643                         uinfo=userinfo_create(log_entry.User,(id_is_ip) ? NULL : log_entry.Ip);
 644                         ufile->user=uinfo;
 645                         nusers++;
 646                 } else {
 647                         if (prev_ufile) {
 648                                 prev_ufile->next=ufile->next;
 649                                 ufile->next=first_user_file;
 650                                 first_user_file=ufile;
 651                         }
 652                 }
 653 #ifdef ENABLE_DOUBLE_CHECK_DATA
 654                 if (strcmp(log_entry.HttpCode,"TCP_DENIED/407")!=0) {
 655                         ufile->user->nbytes+=log_entry.DataSize;
 656                         ufile->user->elap+=log_entry.ElapsedTime;
 657                 }
 658 #endif
 659
 660                 if (ufile->file==NULL) {
 661                         if (nopen>=maxopenfiles) {
 662                                 x=0;
 663                                 for (ufile1=first_user_file ; ufile1 ; ufile1=ufile1->next) {
 664                                         if (ufile1->file!=NULL) {
 665                                                 if (x>=maxopenfiles) {
 666                                                         if (fclose(ufile1->file)==EOF) {
 667                                                                 debuga(__FILE__,__LINE__,_("Write error in log file of user %s: %s\n"),ufile1->user->id,strerror(errno));
 668                                                                 exit(EXIT_FAILURE);
 669                                                         }
 670                                                         ufile1->file=NULL;
 671                                                 }
 672                                                 x++;
 673                                         }
 674                                 }
 675                         }
 676                         if (snprintf (tmp3, sizeof(tmp3), "%s/%s.user_unsort", tmp, ufile->user->filename)>=sizeof(tmp3)) {
 677                                 debuga(__FILE__,__LINE__,_("Temporary user file name too long: %s/%s.user_unsort\n"), tmp, ufile->user->filename);
 678                                 exit(EXIT_FAILURE);
 679                         }
 680                         if ((ufile->file = MY_FOPEN (tmp3, "a")) == NULL) {
 681                                 debuga(__FILE__,__LINE__,_("(log) Cannot open temporary file %s: %s\n"), tmp3, strerror(errno));
 682                                 exit (1);
 683                         }
 684                 }
 685
 686                 strftime(dia, sizeof(dia), "%d/%m/%Y",&log_entry.EntryTime);
 687                 strftime(hora,sizeof(hora),"%H:%M:%S",&log_entry.EntryTime);
 688
 689                 if (fprintf(ufile->file, "%s\t%s\t%s\t%s\t%"PRIu64"\t%s\t%ld\t%s\n",dia,hora,
 690                                                                 log_entry.Ip,url,(uint64_t)log_entry.DataSize,
 691                                                                 log_entry.HttpCode,log_entry.ElapsedTime,smartfilter)<=0) {
 692                         debuga(__FILE__,__LINE__,_("Write error in the log file of user %s\n"),log_entry.User);
 693                         exit(EXIT_FAILURE);
 694                 }
 695                 records_kept++;
 696
 697                 if (fp_log && log_line.current_format!=&ReadSargLog) {
 698                         fprintf(fp_log, "%s\t%s\t%s\t%s\t%s\t%"PRIu64"\t%s\t%ld\t%s\n",dia,hora,
 699                                                         log_entry.User,log_entry.Ip,url,(uint64_t)log_entry.DataSize,
 700                                                         log_entry.HttpCode,log_entry.ElapsedTime,smartfilter);
 701                 }
 702
 703                 totregsg++;
 704
 705                 denied_write(&log_entry);
 706                 authfail_write(&log_entry);
 707                 if (download_flag) download_write(&log_entry,download_url);
 708
 709                 if (log_line.current_format!=&ReadSargLog) {
 710                         if (period.start.tm_year==0 || idata<mindate || compare_date(&period.start,&log_entry.EntryTime)>0){
 711                                 mindate=idata;
 712                                 memcpy(&period.start,&log_entry.EntryTime,sizeof(log_entry.EntryTime));
 713                         }
 714                         if (period.end.tm_year==0 || idata>maxdate || compare_date(&period.end,&log_entry.EntryTime)<0) {
 715                                 maxdate=idata;
 716                                 memcpy(&period.end,&log_entry.EntryTime,sizeof(log_entry.EntryTime));
 717                         }
 718                 }
 719
 720                 if (debugz>=LogLevel_Data){
 721                         printf("IP=\t%s\n",log_entry.Ip);
 722                         printf("USER=\t%s\n",log_entry.User);
 723                         printf("ELAP=\t%ld\n",log_entry.ElapsedTime);
 724                         printf("DATE=\t%s\n",dia);
 725                         printf("TIME=\t%s\n",hora);
 726                         //printf("FUNC=\t%s\n",fun);
 727                         printf("URL=\t%s\n",url);
 728                         printf("CODE=\t%s\n",log_entry.HttpCode);
 729                         printf("LEN=\t%"PRIu64"\n",(uint64_t)log_entry.DataSize);
 730                 }
 731         }
 732         longline_destroy(&line);
 733
 734         if (!from_stdin) {
 735                 if (from_pipe)
 736                         pclose(fp_in);
 737                 else {
 738                         fclose(fp_in);
 739                         if (ShowReadStatistics) {
 740                                 if (ShowReadPercent)
 741                                         printf(_("SARG: Records in file: %lu, reading: %3.2f%%\n"),recs2, (float) 100 );
 742                                 else
 743                                         printf(_("SARG: Records in file: %lu\n"),recs2);
 744                         }
 745                 }
 746         }
 747 }
 748
 749 /*!
 750  * Display a line with the excluded entries count.
 751  *
 752  * \param Explain A translated string explaining the exluded count.
 753  * \param Reason The reason number.
 754  */
 755 static void DisplayExcludeCount(const char *Explain,enum ExcludeReasonEnum Reason)
 756 {
 757         if (excluded_count[Reason]>0) {
 758                 debuga(__FILE__,__LINE__,"   %s: %lu\n",Explain,excluded_count[Reason]);
 759         }
 760 }
 761
 762 /*!
 763 Read the log files.
 764
 765 \param Filter The filtering parameters for the file to load.
 766
 767 \retval 1 Records found.
 768 \retval 0 No record found.
 769 */
 770 int ReadLogFile(struct ReadLogDataStruct *Filter)
 771 {
 772         int x;
 773         int cstatus;
 774         struct userfilestruct *ufile;
 775         struct userfilestruct *ufile1;
 776         FileListIterator FIter;
 777         const char *file;
 778
 779         for (x=0 ; x<sizeof(format_count)/sizeof(*format_count) ; x++) format_count[x]=0;
 780         for (x=0 ; x<sizeof(excluded_count)/sizeof(*excluded_count) ; x++) excluded_count[x]=0;
 781         first_user_file=NULL;
 782
 783         if (!dataonly) {
 784                 denied_open();
 785                 authfail_open();
 786                 download_open();
 787         }
 788
 789         FIter=FileListIter_Open(AccessLog);
 790         while ((file=FileListIter_Next(FIter))!=NULL)
 791                 ReadOneLogFile(Filter,file);
 792         FileListIter_Close(FIter);
 793
 794         if(fp_log != NULL) {
 795                 char val2[40];
 796                 char val4[4096];//val4 must not be bigger than SargLogFile without fixing the strcpy below
 797
 798                 if (fclose(fp_log)==EOF) {
 799                         debuga(__FILE__,__LINE__,_("Write error in \"%s\": %s\n"),SargLogFile,strerror(errno));
 800                         exit(EXIT_FAILURE);
 801                 }
 802                 strftime(val2,sizeof(val2),"%d%m%Y_%H%M",&period.start);
 803                 strftime(val1,sizeof(val1),"%d%m%Y_%H%M",&period.end);
 804                 if (snprintf(val4,sizeof(val4),"%s/sarg-%s-%s.log",ParsedOutputLog,val2,val1)>=sizeof(val4)) {
 805                         debuga(__FILE__,__LINE__,_("Path too long: "));
 806                         debuga_more("%s/sarg-%s-%s.log\n",ParsedOutputLog,val2,val1);
 807                         exit(EXIT_FAILURE);
 808                 }
 809                 if (rename(SargLogFile,val4)) {
 810                         debuga(__FILE__,__LINE__,_("failed to rename %s to %s - %s\n"),SargLogFile,val4,strerror(errno));
 811                 } else {
 812                         strcpy(SargLogFile,val4);
 813
 814                         if(strcmp(ParsedOutputLogCompress,"nocompress") != 0 && ParsedOutputLogCompress[0] != '\0') {
 815                                 /*
 816                                 No double quotes around ParsedOutputLogCompress because it may contain command line options. If double quotes are
 817                                 necessary around the command name, put them in the configuration file.
 818                                 */
 819                                 if (snprintf(val1,sizeof(val1),"%s \"%s\"",ParsedOutputLogCompress,SargLogFile)>=sizeof(val1)) {
 820                                         debuga(__FILE__,__LINE__,_("Command too long: %s \"%s\"\n"),ParsedOutputLogCompress,SargLogFile);
 821                                         exit(EXIT_FAILURE);
 822                                 }
 823                                 cstatus=system(val1);
 824                                 if (!WIFEXITED(cstatus) || WEXITSTATUS(cstatus)) {
 825                                         debuga(__FILE__,__LINE__,_("command return status %d\n"),WEXITSTATUS(cstatus));
 826                                         debuga(__FILE__,__LINE__,_("command: %s\n"),val1);
 827                                         exit(EXIT_FAILURE);
 828                                 }
 829                         }
 830                 }
 831                 if(debug)
 832                         debuga(__FILE__,__LINE__,_("Sarg parsed log saved as %s\n"),SargLogFile);
 833         }
 834
 835         denied_close();
 836         authfail_close();
 837         download_close();
 838
 839         for (ufile=first_user_file ; ufile ; ufile=ufile1) {
 840                 ufile1=ufile->next;
 841                 if (ufile->file!=NULL && fclose(ufile->file)==EOF) {
 842                         debuga(__FILE__,__LINE__,_("Write error in log file of user %s: %s\n"),ufile->user->id,strerror(errno));
 843                         exit(EXIT_FAILURE);
 844                 }
 845                 free(ufile);
 846         }
 847
 848         if (debug) {
 849                 unsigned long int totalcount=0;
 850
 851                 debuga(__FILE__,__LINE__,_("   Records read: %ld, written: %ld, excluded: %ld\n"),totregsl,totregsg,totregsx);
 852
 853                 for (x=sizeof(excluded_count)/sizeof(*excluded_count)-1 ; x>=0 && excluded_count[x]>0 ; x--);
 854                 if (x>=0) {
 855                         debuga(__FILE__,__LINE__,_("Reasons for excluded entries:\n"));
 856                         DisplayExcludeCount(_("User name too long"),ER_UserNameTooLong);
 857                         DisplayExcludeCount(_("Squid logged an incomplete query received from the client"),ER_IncompleteQuery);
 858                         DisplayExcludeCount(_("Log file turned over"),ER_LogfileTurnedOver);
 859                         DisplayExcludeCount(_("Excluded by \"exclude_string\" in sarg.conf"),ER_ExcludeString);
 860                         DisplayExcludeCount(_("Unknown input log file format"),ER_UnknownFormat);
 861                         DisplayExcludeCount(_("Line ignored by the input log format"),ER_FormatData);
 862                         DisplayExcludeCount(_("Time outside the requested date range (-d)"),ER_OutOfDateRange);
 863                         DisplayExcludeCount(_("Ignored week day (\"weekdays\" parameter in sarg.conf)"),ER_OutOfWDayRange);
 864                         DisplayExcludeCount(_("Ignored hour (\"hours\" parameter in sarg.conf)"),ER_OutOfHourRange);
 865                         DisplayExcludeCount(_("User is not in the \"include_users\" list"),ER_User);
 866                         DisplayExcludeCount(_("HTTP code excluded by \"exclude_code\" file"),ER_HttpCode);
 867                         DisplayExcludeCount(_("Invalid character found in user name"),ER_InvalidUserChar);
 868                         DisplayExcludeCount(_("No URL in entry"),ER_NoUrl);
 869                         DisplayExcludeCount(_("Not the IP address requested with -a"),ER_UntrackedIpAddr);
 870                         DisplayExcludeCount(_("URL excluded by -c or \"exclude_hosts\""),ER_Url);
 871                         DisplayExcludeCount(_("Entry time outside of requested hour range (-t)"),ER_OutOfTimeRange);
 872                         DisplayExcludeCount(_("Not the URL requested by -s"),ER_UntrackedUrl);
 873                         DisplayExcludeCount(_("No user in entry"),ER_NoUser);
 874                         DisplayExcludeCount(_("Not the user requested by -u"),ER_UntrackedUser);
 875                         DisplayExcludeCount(_("System user as defined by \"password\" in sarg.conf"),ER_SysUser);
 876                         DisplayExcludeCount(_("User ignored by \"exclude_users\""),ER_IgnoredUser);
 877                 }
 878
 879                 for (x=0 ; x<sizeof(LogFormats)/sizeof(*LogFormats) ; x++) {
 880                         if (format_count[x]>0) {
 881                                 /* TRANSLATORS: It displays the number of lines found in the input log files
 882                                 * for each supported log format. The log format name is the %s and is a string
 883                                 * you translate somewhere else. */
 884                                 debuga(__FILE__,__LINE__,_("%s: %lu entries\n"),_(LogFormats[x]->Name),format_count[x]);
 885                                 totalcount+=format_count[x];
 886                         }
 887                 }
 888
 889                 if (totalcount==0 && totregsg)
 890                         debuga(__FILE__,__LINE__,_("Log with invalid format\n"));
 891         }
 892
 893         return((totregsg!=0) ? 1 : 0);
 894 }
 895
 896 /*!
 897  * Get the start and end date of the period covered by the log files.
 898  */
 899 void GetLogPeriod(struct tm *Start,struct tm *End)
 900 {
 901         if (EarliestDate>=0) {
 902                 memcpy(Start,&EarliestDateTime,sizeof(struct tm));
 903         } else {
 904                 memset(Start,0,sizeof(struct tm));
 905         }
 906         if (LatestDate>=0) {
 907                 memcpy(End,&LatestDateTime,sizeof(struct tm));
 908         } else {
 909                 memset(End,0,sizeof(struct tm));
 910         }
 911 }