granicus.if.org Git - imagemagick/blob - MagickCore/log.c

   1 /*
   2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   3 %                                                                             %
   4 %                                                                             %
   5 %                                                                             %
   6 %                             L       OOO    GGGG                             %
   7 %                             L      O   O  G                                 %
   8 %                             L      O   O  G GG                              %
   9 %                             L      O   O  G   G                             %
  10 %                             LLLLL   OOO    GGG                              %
  11 %                                                                             %
  12 %                                                                             %
  13 %                             MagickCore Log Events                           %
  14 %                                                                             %
  15 %                               Software Design                               %
  16 %                                 John Cristy                                 %
  17 %                                September 2002                               %
  18 %                                                                             %
  19 %                                                                             %
  20 %  Copyright 1999-2013 ImageMagick Studio LLC, a non-profit organization      %
  21 %  dedicated to making software imaging solutions freely available.           %
  22 %                                                                             %
  23 %  You may not use this file except in compliance with the License.  You may  %
  24 %  obtain a copy of the License at                                            %
  25 %                                                                             %
  26 %    http://www.imagemagick.org/script/license.php                            %
  27 %                                                                             %
  28 %  Unless required by applicable law or agreed to in writing, software        %
  29 %  distributed under the License is distributed on an "AS IS" BASIS,          %
  30 %  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   %
  31 %  See the License for the specific language governing permissions and        %
  32 %  limitations under the License.                                             %
  33 %                                                                             %
  34 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  35 %
  36 %
  37 */
  38 \f
  39 /*
  40   Include declarations.
  41 */
  42 #include "MagickCore/studio.h"
  43 #include "MagickCore/blob.h"
  44 #include "MagickCore/client.h"
  45 #include "MagickCore/configure.h"
  46 #include "MagickCore/configure-private.h"
  47 #include "MagickCore/exception.h"
  48 #include "MagickCore/exception-private.h"
  49 #include "MagickCore/hashmap.h"
  50 #include "MagickCore/log.h"
  51 #include "MagickCore/log-private.h"
  52 #include "MagickCore/memory_.h"
  53 #include "MagickCore/option.h"
  54 #include "MagickCore/semaphore.h"
  55 #include "MagickCore/timer.h"
  56 #include "MagickCore/string_.h"
  57 #include "MagickCore/string-private.h"
  58 #include "MagickCore/token.h"
  59 #include "MagickCore/thread_.h"
  60 #include "MagickCore/thread-private.h"
  61 #include "MagickCore/utility.h"
  62 #include "MagickCore/utility-private.h"
  63 #include "MagickCore/version.h"
  64 #include "MagickCore/xml-tree.h"
  65 \f
  66 /*
  67   Define declarations.
  68 */
  69 #define LogFilename  "log.xml"
  70 \f
  71 /*
  72   Typedef declarations.
  73 */
  74 typedef enum
  75 {
  76   UndefinedHandler = 0x0000,
  77   NoHandler = 0x0000,
  78   ConsoleHandler = 0x0001,
  79   StdoutHandler = 0x0002,
  80   StderrHandler = 0x0004,
  81   FileHandler = 0x0008,
  82   DebugHandler = 0x0010,
  83   EventHandler = 0x0020
  84 } LogHandlerType;
  85
  86 typedef struct _EventInfo
  87 {
  88   char
  89     *name;
  90
  91   LogEventType
  92     event;
  93 } EventInfo;
  94
  95 typedef struct _HandlerInfo
  96 {
  97   const char
  98     *name;
  99
 100   LogHandlerType
 101     handler;
 102 } HandlerInfo;
 103
 104 struct _LogInfo
 105 {
 106   LogEventType
 107     event_mask;
 108
 109   LogHandlerType
 110     handler_mask;
 111
 112   char
 113     *path,
 114     *name,
 115     *filename,
 116     *format;
 117
 118   size_t
 119     generations,
 120     limit;
 121
 122   FILE
 123     *file;
 124
 125   size_t
 126     generation;
 127
 128   MagickBooleanType
 129     append,
 130     exempt,
 131     stealth;
 132
 133   TimerInfo
 134     timer;
 135
 136   size_t
 137     signature;
 138 };
 139
 140 typedef struct _LogMapInfo
 141 {
 142   const LogEventType
 143     event_mask;
 144
 145   const LogHandlerType
 146     handler_mask;
 147
 148   const char
 149     *filename,
 150     *format;
 151 } LogMapInfo;
 152 \f
 153 /*
 154   Static declarations.
 155 */
 156 static const HandlerInfo
 157   LogHandlers[] =
 158   {
 159     { "Console", ConsoleHandler },
 160     { "Debug", DebugHandler },
 161     { "Event", EventHandler },
 162     { "File", FileHandler },
 163     { "None", NoHandler },
 164     { "Stderr", StderrHandler },
 165     { "Stdout", StdoutHandler },
 166     { (char *) NULL, UndefinedHandler }
 167   };
 168
 169 static const LogMapInfo
 170   LogMap[] =
 171   {
 172     { NoEvents, ConsoleHandler, "Magick-%g.log",
 173       "%t %r %u %v %d %c[%p]: %m/%f/%l/%d\\n  %e" }
 174   };
 175
 176 static char
 177   log_name[MaxTextExtent] = "Magick";
 178
 179 static LinkedListInfo
 180   *log_list = (LinkedListInfo *) NULL;
 181
 182 static SemaphoreInfo
 183   *log_semaphore = (SemaphoreInfo *) NULL;
 184
 185 static volatile MagickBooleanType
 186   instantiate_log = MagickFalse;
 187 \f
 188 /*
 189   Forward declarations.
 190 */
 191 static LogHandlerType
 192   ParseLogHandlers(const char *);
 193
 194 static LogInfo
 195   *GetLogInfo(const char *,ExceptionInfo *);
 196
 197 static MagickBooleanType
 198   InitializeLogList(ExceptionInfo *),
 199   LoadLogLists(const char *,ExceptionInfo *);
 200 \f
 201 /*
 202 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 203 %                                                                             %
 204 %                                                                             %
 205 %                                                                             %
 206 %   C l o s e M a g i c k L o g                                               %
 207 %                                                                             %
 208 %                                                                             %
 209 %                                                                             %
 210 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 211 %
 212 %  CloseMagickLog() closes the Magick log.
 213 %
 214 %  The format of the CloseMagickLog method is:
 215 %
 216 %      CloseMagickLog(void)
 217 %
 218 */
 219 MagickExport void CloseMagickLog(void)
 220 {
 221   ExceptionInfo
 222     *exception;
 223
 224   LogInfo
 225     *log_info;
 226
 227   if (IsEventLogging() == MagickFalse)
 228     return;
 229   exception=AcquireExceptionInfo();
 230   log_info=GetLogInfo("*",exception);
 231   exception=DestroyExceptionInfo(exception);
 232   LockSemaphoreInfo(log_semaphore);
 233   if (log_info->file != (FILE *) NULL)
 234     {
 235       (void) FormatLocaleFile(log_info->file,"</log>\n");
 236       (void) fclose(log_info->file);
 237       log_info->file=(FILE *) NULL;
 238     }
 239   UnlockSemaphoreInfo(log_semaphore);
 240 }
 241 \f
 242 /*
 243 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 244 %                                                                             %
 245 %                                                                             %
 246 %                                                                             %
 247 +   G e t L o g I n f o                                                       %
 248 %                                                                             %
 249 %                                                                             %
 250 %                                                                             %
 251 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 252 %
 253 %  GetLogInfo() searches the log list for the specified name and if found
 254 %  returns attributes for that log.
 255 %
 256 %  The format of the GetLogInfo method is:
 257 %
 258 %      LogInfo *GetLogInfo(const char *name,ExceptionInfo *exception)
 259 %
 260 %  A description of each parameter follows:
 261 %
 262 %    o name: the log name.
 263 %
 264 %    o exception: return any errors or warnings in this structure.
 265 %
 266 */
 267 static LogInfo *GetLogInfo(const char *name,ExceptionInfo *exception)
 268 {
 269   register LogInfo
 270     *p;
 271
 272   assert(exception != (ExceptionInfo *) NULL);
 273   if ((log_list == (LinkedListInfo *) NULL) || (instantiate_log == MagickFalse))
 274     if (InitializeLogList(exception) == MagickFalse)
 275       return((LogInfo *) NULL);
 276   if ((log_list == (LinkedListInfo *) NULL) ||
 277       (IsLinkedListEmpty(log_list) != MagickFalse))
 278     return((LogInfo *) NULL);
 279   if ((name == (const char *) NULL) || (LocaleCompare(name,"*") == 0))
 280     return((LogInfo *) GetValueFromLinkedList(log_list,0));
 281   /*
 282     Search for log tag.
 283   */
 284   LockSemaphoreInfo(log_semaphore);
 285   ResetLinkedListIterator(log_list);
 286   p=(LogInfo *) GetNextValueInLinkedList(log_list);
 287   while (p != (LogInfo *) NULL)
 288   {
 289     if (LocaleCompare(name,p->name) == 0)
 290       break;
 291     p=(LogInfo *) GetNextValueInLinkedList(log_list);
 292   }
 293   if (p != (LogInfo *) NULL)
 294     (void) InsertValueInLinkedList(log_list,0,
 295       RemoveElementByValueFromLinkedList(log_list,p));
 296   UnlockSemaphoreInfo(log_semaphore);
 297   return(p);
 298 }
 299 \f
 300 /*
 301 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 302 %                                                                             %
 303 %                                                                             %
 304 %                                                                             %
 305 %   G e t L o g I n f o L i s t                                               %
 306 %                                                                             %
 307 %                                                                             %
 308 %                                                                             %
 309 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 310 %
 311 %  GetLogInfoList() returns any logs that match the specified pattern.
 312 %
 313 %  The format of the GetLogInfoList function is:
 314 %
 315 %      const LogInfo **GetLogInfoList(const char *pattern,
 316 %        size_t *number_preferences,ExceptionInfo *exception)
 317 %
 318 %  A description of each parameter follows:
 319 %
 320 %    o pattern: Specifies a pointer to a text string containing a pattern.
 321 %
 322 %    o number_preferences:  This integer returns the number of logs in the list.
 323 %
 324 %    o exception: return any errors or warnings in this structure.
 325 %
 326 */
 327 #if defined(__cplusplus) || defined(c_plusplus)
 328 extern "C" {
 329 #endif
 330
 331 static int LogInfoCompare(const void *x,const void *y)
 332 {
 333   const LogInfo
 334     **p,
 335     **q;
 336
 337   p=(const LogInfo **) x,
 338   q=(const LogInfo **) y;
 339   if (LocaleCompare((*p)->path,(*q)->path) == 0)
 340     return(LocaleCompare((*p)->name,(*q)->name));
 341   return(LocaleCompare((*p)->path,(*q)->path));
 342 }
 343
 344 #if defined(__cplusplus) || defined(c_plusplus)
 345 }
 346 #endif
 347
 348 MagickExport const LogInfo **GetLogInfoList(const char *pattern,
 349   size_t *number_preferences,ExceptionInfo *exception)
 350 {
 351   const LogInfo
 352     **preferences;
 353
 354   register const LogInfo
 355     *p;
 356
 357   register ssize_t
 358     i;
 359
 360   /*
 361     Allocate log list.
 362   */
 363   assert(pattern != (char *) NULL);
 364   (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",pattern);
 365   assert(number_preferences != (size_t *) NULL);
 366   *number_preferences=0;
 367   p=GetLogInfo("*",exception);
 368   if (p == (const LogInfo *) NULL)
 369     return((const LogInfo **) NULL);
 370   preferences=(const LogInfo **) AcquireQuantumMemory((size_t)
 371     GetNumberOfElementsInLinkedList(log_list)+1UL,sizeof(*preferences));
 372   if (preferences == (const LogInfo **) NULL)
 373     return((const LogInfo **) NULL);
 374   /*
 375     Generate log list.
 376   */
 377   LockSemaphoreInfo(log_semaphore);
 378   ResetLinkedListIterator(log_list);
 379   p=(const LogInfo *) GetNextValueInLinkedList(log_list);
 380   for (i=0; p != (const LogInfo *) NULL; )
 381   {
 382     if ((p->stealth == MagickFalse) &&
 383         (GlobExpression(p->name,pattern,MagickFalse) != MagickFalse))
 384       preferences[i++]=p;
 385     p=(const LogInfo *) GetNextValueInLinkedList(log_list);
 386   }
 387   UnlockSemaphoreInfo(log_semaphore);
 388   qsort((void *) preferences,(size_t) i,sizeof(*preferences),LogInfoCompare);
 389   preferences[i]=(LogInfo *) NULL;
 390   *number_preferences=(size_t) i;
 391   return(preferences);
 392 }
 393 \f
 394 /*
 395 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 396 %                                                                             %
 397 %                                                                             %
 398 %                                                                             %
 399 %   G e t L o g L i s t                                                       %
 400 %                                                                             %
 401 %                                                                             %
 402 %                                                                             %
 403 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 404 %
 405 %  GetLogList() returns any logs that match the specified pattern.
 406 %
 407 %  The format of the GetLogList function is:
 408 %
 409 %      char **GetLogList(const char *pattern,size_t *number_preferences,
 410 %        ExceptionInfo *exception)
 411 %
 412 %  A description of each parameter follows:
 413 %
 414 %    o pattern: Specifies a pointer to a text string containing a pattern.
 415 %
 416 %    o number_preferences:  This integer returns the number of logs in the list.
 417 %
 418 %    o exception: return any errors or warnings in this structure.
 419 %
 420 */
 421
 422 #if defined(__cplusplus) || defined(c_plusplus)
 423 extern "C" {
 424 #endif
 425
 426 static int LogCompare(const void *x,const void *y)
 427 {
 428   register const char
 429     **p,
 430     **q;
 431
 432   p=(const char **) x;
 433   q=(const char **) y;
 434   return(LocaleCompare(*p,*q));
 435 }
 436
 437 #if defined(__cplusplus) || defined(c_plusplus)
 438 }
 439 #endif
 440
 441 MagickExport char **GetLogList(const char *pattern,
 442   size_t *number_preferences,ExceptionInfo *exception)
 443 {
 444   char
 445     **preferences;
 446
 447   register const LogInfo
 448     *p;
 449
 450   register ssize_t
 451     i;
 452
 453   /*
 454     Allocate log list.
 455   */
 456   assert(pattern != (char *) NULL);
 457   (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",pattern);
 458   assert(number_preferences != (size_t *) NULL);
 459   *number_preferences=0;
 460   p=GetLogInfo("*",exception);
 461   if (p == (const LogInfo *) NULL)
 462     return((char **) NULL);
 463   preferences=(char **) AcquireQuantumMemory((size_t)
 464     GetNumberOfElementsInLinkedList(log_list)+1UL,sizeof(*preferences));
 465   if (preferences == (char **) NULL)
 466     return((char **) NULL);
 467   /*
 468     Generate log list.
 469   */
 470   LockSemaphoreInfo(log_semaphore);
 471   ResetLinkedListIterator(log_list);
 472   p=(const LogInfo *) GetNextValueInLinkedList(log_list);
 473   for (i=0; p != (const LogInfo *) NULL; )
 474   {
 475     if ((p->stealth == MagickFalse) &&
 476         (GlobExpression(p->name,pattern,MagickFalse) != MagickFalse))
 477       preferences[i++]=ConstantString(p->name);
 478     p=(const LogInfo *) GetNextValueInLinkedList(log_list);
 479   }
 480   UnlockSemaphoreInfo(log_semaphore);
 481   qsort((void *) preferences,(size_t) i,sizeof(*preferences),LogCompare);
 482   preferences[i]=(char *) NULL;
 483   *number_preferences=(size_t) i;
 484   return(preferences);
 485 }
 486 \f
 487 /*
 488 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 489 %                                                                             %
 490 %                                                                             %
 491 %                                                                             %
 492 %   G e t L o g N a m e                                                       %
 493 %                                                                             %
 494 %                                                                             %
 495 %                                                                             %
 496 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 497 %
 498 %  GetLogName() returns the current log name.
 499 %
 500 %  The format of the GetLogName method is:
 501 %
 502 %      const char *GetLogName(void)
 503 %
 504 */
 505 MagickExport const char *GetLogName(void)
 506 {
 507   return(log_name);
 508 }
 509 \f
 510 /*
 511 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 512 %                                                                             %
 513 %                                                                             %
 514 %                                                                             %
 515 +   I n i t i a l i z e L o g L i s t                                         %
 516 %                                                                             %
 517 %                                                                             %
 518 %                                                                             %
 519 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 520 %
 521 %  InitializeLogList() initialize the log list.
 522 %
 523 %  The format of the InitializeLogList method is:
 524 %
 525 %      MagickBooleanType InitializeLogList(ExceptionInfo *exception)
 526 %
 527 %  A description of each parameter follows.
 528 %
 529 %    o exception: return any errors or warnings in this structure.
 530 %
 531 */
 532 static MagickBooleanType InitializeLogList(ExceptionInfo *exception)
 533 {
 534   if ((log_list == (LinkedListInfo *) NULL) && (instantiate_log == MagickFalse))
 535     {
 536       if (log_semaphore == (SemaphoreInfo *) NULL)
 537         AcquireSemaphoreInfo(&log_semaphore);
 538       LockSemaphoreInfo(log_semaphore);
 539       if ((log_list == (LinkedListInfo *) NULL) &&
 540           (instantiate_log == MagickFalse))
 541         {
 542           (void) LoadLogLists(LogFilename,exception);
 543           instantiate_log=MagickTrue;
 544         }
 545       UnlockSemaphoreInfo(log_semaphore);
 546     }
 547   return(log_list != (LinkedListInfo *) NULL ? MagickTrue : MagickFalse);
 548 }
 549 \f
 550 /*
 551 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 552 %                                                                             %
 553 %                                                                             %
 554 %                                                                             %
 555 %  I s E v e n t L o g g i n g                                                %
 556 %                                                                             %
 557 %                                                                             %
 558 %                                                                             %
 559 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 560 %
 561 %  IsEventLogging() returns MagickTrue if debug of events is enabled otherwise
 562 %  MagickFalse.
 563 %
 564 %  The format of the IsEventLogging method is:
 565 %
 566 %      MagickBooleanType IsEventLogging(void)
 567 %
 568 */
 569 MagickExport MagickBooleanType IsEventLogging(void)
 570 {
 571   const LogInfo
 572     *log_info;
 573
 574   ExceptionInfo
 575     *exception;
 576
 577   if ((log_list == (LinkedListInfo *) NULL) ||
 578       (IsLinkedListEmpty(log_list) != MagickFalse))
 579     return(MagickFalse);
 580   exception=AcquireExceptionInfo();
 581   log_info=GetLogInfo("*",exception);
 582   exception=DestroyExceptionInfo(exception);
 583   return(log_info->event_mask != NoEvents ? MagickTrue : MagickFalse);
 584 }
 585 /*
 586 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 587 %                                                                             %
 588 %                                                                             %
 589 %                                                                             %
 590 %  L i s t L o g I n f o                                                      %
 591 %                                                                             %
 592 %                                                                             %
 593 %                                                                             %
 594 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 595 %
 596 %  ListLogInfo() lists the log info to a file.
 597 %
 598 %  The format of the ListLogInfo method is:
 599 %
 600 %      MagickBooleanType ListLogInfo(FILE *file,ExceptionInfo *exception)
 601 %
 602 %  A description of each parameter follows.
 603 %
 604 %    o file:  An pointer to a FILE.
 605 %
 606 %    o exception: return any errors or warnings in this structure.
 607 %
 608 */
 609 MagickExport MagickBooleanType ListLogInfo(FILE *file,ExceptionInfo *exception)
 610 {
 611 #define MegabytesToBytes(value) ((MagickSizeType) (value)*1024*1024)
 612
 613   const char
 614     *path;
 615
 616   const LogInfo
 617     **log_info;
 618
 619   register ssize_t
 620     i;
 621
 622   size_t
 623     number_aliases;
 624
 625   ssize_t
 626     j;
 627
 628   if (file == (const FILE *) NULL)
 629     file=stdout;
 630   log_info=GetLogInfoList("*",&number_aliases,exception);
 631   if (log_info == (const LogInfo **) NULL)
 632     return(MagickFalse);
 633   j=0;
 634   path=(const char *) NULL;
 635   for (i=0; i < (ssize_t) number_aliases; i++)
 636   {
 637     if (log_info[i]->stealth != MagickFalse)
 638       continue;
 639     if ((path == (const char *) NULL) ||
 640         (LocaleCompare(path,log_info[i]->path) != 0))
 641       {
 642         size_t
 643           length;
 644
 645         if (log_info[i]->path != (char *) NULL)
 646           (void) FormatLocaleFile(file,"\nPath: %s\n\n",log_info[i]->path);
 647         length=0;
 648         for (j=0; j < (ssize_t) (8*sizeof(LogHandlerType)); j++)
 649         {
 650           size_t
 651             mask;
 652
 653           mask=1U << j;
 654           if ((log_info[i]->handler_mask & mask) != 0)
 655             {
 656               (void) FormatLocaleFile(file,"%s ",LogHandlers[j].name);
 657               length+=strlen(LogHandlers[j].name);
 658             }
 659         }
 660         for (j=(ssize_t) length; j <= 12; j++)
 661           (void) FormatLocaleFile(file," ");
 662         (void) FormatLocaleFile(file," Generations     Limit  Format\n");
 663         (void) FormatLocaleFile(file,"-----------------------------------------"
 664           "--------------------------------------\n");
 665       }
 666     path=log_info[i]->path;
 667     if (log_info[i]->filename != (char *) NULL)
 668       {
 669         (void) FormatLocaleFile(file,"%s",log_info[i]->filename);
 670         for (j=(ssize_t) strlen(log_info[i]->filename); j <= 16; j++)
 671           (void) FormatLocaleFile(file," ");
 672       }
 673     (void) FormatLocaleFile(file,"%9g  ",(double) log_info[i]->generations);
 674     (void) FormatLocaleFile(file,"%8g   ",(double) log_info[i]->limit);
 675     if (log_info[i]->format != (char *) NULL)
 676       (void) FormatLocaleFile(file,"%s",log_info[i]->format);
 677     (void) FormatLocaleFile(file,"\n");
 678   }
 679   (void) fflush(file);
 680   log_info=(const LogInfo **) RelinquishMagickMemory((void *) log_info);
 681   return(MagickTrue);
 682 }
 683 \f
 684 /*
 685 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 686 %                                                                             %
 687 %                                                                             %
 688 %                                                                             %
 689 +   L o g C o m p o n e n t G e n e s i s                                     %
 690 %                                                                             %
 691 %                                                                             %
 692 %                                                                             %
 693 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 694 %
 695 %  LogComponentGenesis() instantiates the log component.
 696 %
 697 %  The format of the LogComponentGenesis method is:
 698 %
 699 %      MagickBooleanType LogComponentGenesis(void)
 700 %
 701 */
 702 MagickPrivate MagickBooleanType LogComponentGenesis(void)
 703 {
 704   AcquireSemaphoreInfo(&log_semaphore);
 705   return(MagickTrue);
 706 }
 707 \f
 708 /*
 709 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 710 %                                                                             %
 711 %                                                                             %
 712 %                                                                             %
 713 +   L o g C o m p o n e n t T e r m i n u s                                   %
 714 %                                                                             %
 715 %                                                                             %
 716 %                                                                             %
 717 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 718 %
 719 %  LogComponentTerminus() destroys the logging component.
 720 %
 721 %  The format of the LogComponentTerminus method is:
 722 %
 723 %      LogComponentTerminus(void)
 724 %
 725 */
 726
 727 static void *DestroyLogElement(void *log_info)
 728 {
 729   register LogInfo
 730     *p;
 731
 732   p=(LogInfo *) log_info;
 733   if (p->file != (FILE *) NULL)
 734     {
 735       (void) FormatLocaleFile(p->file,"</log>\n");
 736       (void) fclose(p->file);
 737       p->file=(FILE *) NULL;
 738     }
 739   if (p->exempt == MagickFalse)
 740     {
 741       if (p->format != (char *) NULL)
 742         p->format=DestroyString(p->format);
 743       if (p->path != (char *) NULL)
 744         p->path=DestroyString(p->path);
 745       if (p->filename != (char *) NULL)
 746         p->filename=DestroyString(p->filename);
 747     }
 748   p=(LogInfo *) RelinquishMagickMemory(p);
 749   return((void *) NULL);
 750 }
 751
 752 MagickPrivate void LogComponentTerminus(void)
 753 {
 754   if (log_semaphore == (SemaphoreInfo *) NULL)
 755     AcquireSemaphoreInfo(&log_semaphore);
 756   LockSemaphoreInfo(log_semaphore);
 757   if (log_list != (LinkedListInfo *) NULL)
 758     log_list=DestroyLinkedList(log_list,DestroyLogElement);
 759   instantiate_log=MagickFalse;
 760   UnlockSemaphoreInfo(log_semaphore);
 761   DestroySemaphoreInfo(&log_semaphore);
 762 }
 763 \f
 764 /*
 765 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 766 %                                                                             %
 767 %                                                                             %
 768 %                                                                             %
 769 %   L o g M a g i c k E v e n t                                               %
 770 %                                                                             %
 771 %                                                                             %
 772 %                                                                             %
 773 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 774 %
 775 %  LogMagickEvent() logs an event as determined by the log configuration file.
 776 %  If an error occurs, MagickFalse is returned otherwise MagickTrue.
 777 %
 778 %  The format of the LogMagickEvent method is:
 779 %
 780 %      MagickBooleanType LogMagickEvent(const LogEventType type,
 781 %        const char *module,const char *function,const size_t line,
 782 %        const char *format,...)
 783 %
 784 %  A description of each parameter follows:
 785 %
 786 %    o type: the event type.
 787 %
 788 %    o filename: the source module filename.
 789 %
 790 %    o function: the function name.
 791 %
 792 %    o line: the line number of the source module.
 793 %
 794 %    o format: the output format.
 795 %
 796 */
 797 static char *TranslateEvent(const LogEventType magick_unused(type),
 798   const char *module,const char *function,const size_t line,
 799   const char *domain,const char *event)
 800 {
 801   char
 802     *text;
 803
 804   double
 805     elapsed_time,
 806     user_time;
 807
 808   ExceptionInfo
 809     *exception;
 810
 811   LogInfo
 812     *log_info;
 813
 814   register char
 815     *q;
 816
 817   register const char
 818     *p;
 819
 820   size_t
 821     extent;
 822
 823   time_t
 824     seconds;
 825
 826   exception=AcquireExceptionInfo();
 827   log_info=(LogInfo *) GetLogInfo("*",exception);
 828   exception=DestroyExceptionInfo(exception);
 829   seconds=time((time_t *) NULL);
 830   elapsed_time=GetElapsedTime(&log_info->timer);
 831   user_time=GetUserTime(&log_info->timer);
 832   text=AcquireString(event);
 833   if (log_info->format == (char *) NULL)
 834     return(text);
 835   extent=strlen(event)+MaxTextExtent;
 836   if (LocaleCompare(log_info->format,"xml") == 0)
 837     {
 838       char
 839         timestamp[MaxTextExtent];
 840
 841       /*
 842         Translate event in "XML" format.
 843       */
 844       (void) FormatMagickTime(seconds,extent,timestamp);
 845       (void) FormatLocaleString(text,extent,
 846         "<entry>\n"
 847         "  <timestamp>%s</timestamp>\n"
 848         "  <elapsed-time>%lu:%02lu.%03lu</elapsed-time>\n"
 849         "  <user-time>%0.3f</user-time>\n"
 850         "  <process-id>%.20g</process-id>\n"
 851         "  <thread-id>%.20g</thread-id>\n"
 852         "  <module>%s</module>\n"
 853         "  <function>%s</function>\n"
 854         "  <line>%.20g</line>\n"
 855         "  <domain>%s</domain>\n"
 856         "  <event>%s</event>\n"
 857         "</entry>",timestamp,(unsigned long) (elapsed_time/60.0),
 858         (unsigned long) floor(fmod(elapsed_time,60.0)),(unsigned long)
 859         (1000.0*(elapsed_time-floor(elapsed_time))+0.5),user_time,
 860         (double) getpid(),(double) GetMagickThreadSignature(),module,function,
 861         (double) line,domain,event);
 862       return(text);
 863     }
 864   /*
 865     Translate event in "human readable" format.
 866   */
 867   q=text;
 868   for (p=log_info->format; *p != '\0'; p++)
 869   {
 870     *q='\0';
 871     if ((size_t) (q-text+MaxTextExtent) >= extent)
 872       {
 873         extent+=MaxTextExtent;
 874         text=(char *) ResizeQuantumMemory(text,extent+MaxTextExtent,
 875           sizeof(*text));
 876         if (text == (char *) NULL)
 877           return((char *) NULL);
 878         q=text+strlen(text);
 879       }
 880     /*
 881       The format of the log is defined by embedding special format characters:
 882
 883         %c   client name
 884         %d   domain
 885         %e   event
 886         %f   function
 887         %g   generation
 888         %l   line
 889         %m   module
 890         %n   log name
 891         %p   process id
 892         %r   real CPU time
 893         %t   wall clock time
 894         %u   user CPU time
 895         %v   version
 896         %%   percent sign
 897         \n   newline
 898         \r   carriage return
 899     */
 900     if ((*p == '\\') && (*(p+1) == 'r'))
 901       {
 902         *q++='\r';
 903         p++;
 904         continue;
 905       }
 906     if ((*p == '\\') && (*(p+1) == 'n'))
 907       {
 908         *q++='\n';
 909         p++;
 910         continue;
 911       }
 912     if (*p != '%')
 913       {
 914         *q++=(*p);
 915         continue;
 916       }
 917     p++;
 918     switch (*p)
 919     {
 920       case 'c':
 921       {
 922         q+=CopyMagickString(q,GetClientName(),extent);
 923         break;
 924       }
 925       case 'd':
 926       {
 927         q+=CopyMagickString(q,domain,extent);
 928         break;
 929       }
 930       case 'e':
 931       {
 932         q+=CopyMagickString(q,event,extent);
 933         break;
 934       }
 935       case 'f':
 936       {
 937         q+=CopyMagickString(q,function,extent);
 938         break;
 939       }
 940       case 'g':
 941       {
 942         if (log_info->generations == 0)
 943           {
 944             (void) CopyMagickString(q,"0",extent);
 945             q++;
 946             break;
 947           }
 948         q+=FormatLocaleString(q,extent,"%.20g",(double) (log_info->generation %
 949           log_info->generations));
 950         break;
 951       }
 952       case 'l':
 953       {
 954         q+=FormatLocaleString(q,extent,"%.20g",(double) line);
 955         break;
 956       }
 957       case 'm':
 958       {
 959         register const char
 960           *p;
 961
 962         for (p=module+strlen(module)-1; p > module; p--)
 963           if (*p == *DirectorySeparator)
 964             {
 965               p++;
 966               break;
 967             }
 968         q+=CopyMagickString(q,p,extent);
 969         break;
 970       }
 971       case 'n':
 972       {
 973         q+=CopyMagickString(q,GetLogName(),extent);
 974         break;
 975       }
 976       case 'p':
 977       {
 978         q+=FormatLocaleString(q,extent,"%.20g",(double) getpid());
 979         break;
 980       }
 981       case 'r':
 982       {
 983         q+=FormatLocaleString(q,extent,"%lu:%02lu.%03lu",(unsigned long)
 984           (elapsed_time/60.0),(unsigned long) floor(fmod(elapsed_time,60.0)),
 985           (unsigned long) (1000.0*(elapsed_time-floor(elapsed_time))+0.5));
 986         break;
 987       }
 988       case 't':
 989       {
 990         q+=FormatMagickTime(seconds,extent,q);
 991         break;
 992       }
 993       case 'u':
 994       {
 995         q+=FormatLocaleString(q,extent,"%0.3fu",user_time);
 996         break;
 997       }
 998       case 'v':
 999       {
1000         q+=CopyMagickString(q,MagickLibVersionText,extent);
1001         break;
1002       }
1003       case '%':
1004       {
1005         *q++=(*p);
1006         break;
1007       }
1008       default:
1009       {
1010         *q++='%';
1011         *q++=(*p);
1012         break;
1013       }
1014     }
1015   }
1016   *q='\0';
1017   return(text);
1018 }
1019
1020 static char *TranslateFilename(const LogInfo *log_info)
1021 {
1022   char
1023     *filename;
1024
1025   register char
1026     *q;
1027
1028   register const char
1029     *p;
1030
1031   size_t
1032     extent;
1033
1034   /*
1035     Translate event in "human readable" format.
1036   */
1037   assert(log_info != (LogInfo *) NULL);
1038   assert(log_info->filename != (char *) NULL);
1039   filename=AcquireString((char *) NULL);
1040   extent=MaxTextExtent;
1041   q=filename;
1042   for (p=log_info->filename; *p != '\0'; p++)
1043   {
1044     *q='\0';
1045     if ((size_t) (q-filename+MaxTextExtent) >= extent)
1046       {
1047         extent+=MaxTextExtent;
1048         filename=(char *) ResizeQuantumMemory(filename,extent+MaxTextExtent,
1049           sizeof(*filename));
1050         if (filename == (char *) NULL)
1051           return((char *) NULL);
1052         q=filename+strlen(filename);
1053       }
1054     /*
1055       The format of the filename is defined by embedding special format
1056       characters:
1057
1058         %c   client name
1059         %n   log name
1060         %p   process id
1061         %v   version
1062         %%   percent sign
1063     */
1064     if (*p != '%')
1065       {
1066         *q++=(*p);
1067         continue;
1068       }
1069     p++;
1070     switch (*p)
1071     {
1072       case 'c':
1073       {
1074         q+=CopyMagickString(q,GetClientName(),extent);
1075         break;
1076       }
1077       case 'g':
1078       {
1079         if (log_info->generations == 0)
1080           {
1081             (void) CopyMagickString(q,"0",extent);
1082             q++;
1083             break;
1084           }
1085         q+=FormatLocaleString(q,extent,"%.20g",(double) (log_info->generation %
1086           log_info->generations));
1087         break;
1088       }
1089       case 'n':
1090       {
1091         q+=CopyMagickString(q,GetLogName(),extent);
1092         break;
1093       }
1094       case 'p':
1095       {
1096         q+=FormatLocaleString(q,extent,"%.20g",(double) getpid());
1097         break;
1098       }
1099       case 'v':
1100       {
1101         q+=CopyMagickString(q,MagickLibVersionText,extent);
1102         break;
1103       }
1104       case '%':
1105       {
1106         *q++=(*p);
1107         break;
1108       }
1109       default:
1110       {
1111         *q++='%';
1112         *q++=(*p);
1113         break;
1114       }
1115     }
1116   }
1117   *q='\0';
1118   return(filename);
1119 }
1120
1121 MagickBooleanType LogMagickEventList(const LogEventType type,const char *module,
1122   const char *function,const size_t line,const char *format,
1123   va_list operands)
1124 {
1125   char
1126     event[MaxTextExtent],
1127     *text;
1128
1129   const char
1130     *domain;
1131
1132   ExceptionInfo
1133     *exception;
1134
1135   int
1136     n;
1137
1138   LogInfo
1139     *log_info;
1140
1141   if (IsEventLogging() == MagickFalse)
1142     return(MagickFalse);
1143   exception=AcquireExceptionInfo();
1144   log_info=(LogInfo *) GetLogInfo("*",exception);
1145   exception=DestroyExceptionInfo(exception);
1146   LockSemaphoreInfo(log_semaphore);
1147   if ((log_info->event_mask & type) == 0)
1148     {
1149       UnlockSemaphoreInfo(log_semaphore);
1150       return(MagickTrue);
1151     }
1152   domain=CommandOptionToMnemonic(MagickLogEventOptions,type);
1153 #if defined(MAGICKCORE_HAVE_VSNPRINTF)
1154   n=vsnprintf(event,MaxTextExtent,format,operands);
1155 #else
1156   n=vsprintf(event,format,operands);
1157 #endif
1158   if (n < 0)
1159     event[MaxTextExtent-1]='\0';
1160   text=TranslateEvent(type,module,function,line,domain,event);
1161   if (text == (char *) NULL)
1162     {
1163       (void) ContinueTimer((TimerInfo *) &log_info->timer);
1164       UnlockSemaphoreInfo(log_semaphore);
1165       return(MagickFalse);
1166     }
1167   if ((log_info->handler_mask & ConsoleHandler) != 0)
1168     {
1169       (void) FormatLocaleFile(stderr,"%s\n",text);
1170       (void) fflush(stderr);
1171     }
1172   if ((log_info->handler_mask & DebugHandler) != 0)
1173     {
1174 #if defined(MAGICKCORE_WINDOWS_SUPPORT)
1175       OutputDebugString(text);
1176 #endif
1177     }
1178   if ((log_info->handler_mask & EventHandler) != 0)
1179     {
1180 #if defined(MAGICKCORE_WINDOWS_SUPPORT)
1181       (void) NTReportEvent(text,MagickFalse);
1182 #endif
1183     }
1184   if ((log_info->handler_mask & FileHandler) != 0)
1185     {
1186       struct stat
1187         file_info;
1188
1189       file_info.st_size=0;
1190       if (log_info->file != (FILE *) NULL)
1191         (void) fstat(fileno(log_info->file),&file_info);
1192       if (file_info.st_size > (ssize_t) (1024*1024*log_info->limit))
1193         {
1194           (void) FormatLocaleFile(log_info->file,"</log>\n");
1195           (void) fclose(log_info->file);
1196           log_info->file=(FILE *) NULL;
1197         }
1198       if (log_info->file == (FILE *) NULL)
1199         {
1200           char
1201             *filename;
1202
1203           filename=TranslateFilename(log_info);
1204           if (filename == (char *) NULL)
1205             {
1206               (void) ContinueTimer((TimerInfo *) &log_info->timer);
1207               UnlockSemaphoreInfo(log_semaphore);
1208               return(MagickFalse);
1209             }
1210           log_info->append=IsPathAccessible(filename);
1211           log_info->file=fopen_utf8(filename,"ab");
1212           filename=(char  *) RelinquishMagickMemory(filename);
1213           if (log_info->file == (FILE *) NULL)
1214             {
1215               UnlockSemaphoreInfo(log_semaphore);
1216               return(MagickFalse);
1217             }
1218           log_info->generation++;
1219           if (log_info->append == MagickFalse)
1220             (void) FormatLocaleFile(log_info->file,"<?xml version=\"1.0\" "
1221               "encoding=\"UTF-8\" standalone=\"yes\"?>\n");
1222           (void) FormatLocaleFile(log_info->file,"<log>\n");
1223         }
1224       (void) FormatLocaleFile(log_info->file,"   <event>%s</event>\n",text);
1225       (void) fflush(log_info->file);
1226     }
1227   if ((log_info->handler_mask & StdoutHandler) != 0)
1228     {
1229       (void) FormatLocaleFile(stdout,"%s\n",text);
1230       (void) fflush(stdout);
1231     }
1232   if ((log_info->handler_mask & StderrHandler) != 0)
1233     {
1234       (void) FormatLocaleFile(stderr,"%s\n",text);
1235       (void) fflush(stderr);
1236     }
1237   text=(char  *) RelinquishMagickMemory(text);
1238   (void) ContinueTimer((TimerInfo *) &log_info->timer);
1239   UnlockSemaphoreInfo(log_semaphore);
1240   return(MagickTrue);
1241 }
1242
1243 MagickBooleanType LogMagickEvent(const LogEventType type,const char *module,
1244   const char *function,const size_t line,const char *format,...)
1245 {
1246   va_list
1247     operands;
1248
1249   MagickBooleanType
1250     status;
1251
1252   va_start(operands,format);
1253   status=LogMagickEventList(type,module,function,line,format,operands);
1254   va_end(operands);
1255   return(status);
1256 }
1257 \f
1258 /*
1259 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1260 %                                                                             %
1261 %                                                                             %
1262 %                                                                             %
1263 +   L o a d L o g L i s t                                                     %
1264 %                                                                             %
1265 %                                                                             %
1266 %                                                                             %
1267 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1268 %
1269 %  LoadLogList() loads the log configuration file which provides a
1270 %  mapping between log attributes and log name.
1271 %
1272 %  The format of the LoadLogList method is:
1273 %
1274 %      MagickBooleanType LoadLogList(const char *xml,const char *filename,
1275 %        const size_t depth,ExceptionInfo *exception)
1276 %
1277 %  A description of each parameter follows:
1278 %
1279 %    o xml:  The log list in XML format.
1280 %
1281 %    o filename:  The log list filename.
1282 %
1283 %    o depth: depth of <include /> statements.
1284 %
1285 %    o exception: return any errors or warnings in this structure.
1286 %
1287 */
1288 static MagickBooleanType LoadLogList(const char *xml,const char *filename,
1289   const size_t depth,ExceptionInfo *exception)
1290 {
1291   char
1292     keyword[MaxTextExtent],
1293     *token;
1294
1295   const char
1296     *q;
1297
1298   LogInfo
1299     *log_info = (LogInfo *) NULL;
1300
1301   MagickStatusType
1302     status;
1303
1304   /*
1305     Load the log map file.
1306   */
1307   if (xml == (const char *) NULL)
1308     return(MagickFalse);
1309   if (log_list == (LinkedListInfo *) NULL)
1310     {
1311       log_list=NewLinkedList(0);
1312       if (log_list == (LinkedListInfo *) NULL)
1313         {
1314           ThrowFileException(exception,ResourceLimitError,
1315             "MemoryAllocationFailed",filename);
1316           return(MagickFalse);
1317         }
1318     }
1319   status=MagickTrue;
1320   token=AcquireString((const char *) xml);
1321   for (q=(const char *) xml; *q != '\0'; )
1322   {
1323     /*
1324       Interpret XML.
1325     */
1326     GetMagickToken(q,&q,token);
1327     if (*token == '\0')
1328       break;
1329     (void) CopyMagickString(keyword,token,MaxTextExtent);
1330     if (LocaleNCompare(keyword,"<!DOCTYPE",9) == 0)
1331       {
1332         /*
1333           Doctype element.
1334         */
1335         while ((LocaleNCompare(q,"]>",2) != 0) && (*q != '\0'))
1336           GetMagickToken(q,&q,token);
1337         continue;
1338       }
1339     if (LocaleNCompare(keyword,"<!--",4) == 0)
1340       {
1341         /*
1342           Comment element.
1343         */
1344         while ((LocaleNCompare(q,"->",2) != 0) && (*q != '\0'))
1345           GetMagickToken(q,&q,token);
1346         continue;
1347       }
1348     if (LocaleCompare(keyword,"<include") == 0)
1349       {
1350         /*
1351           Include element.
1352         */
1353         while (((*token != '/') && (*(token+1) != '>')) && (*q != '\0'))
1354         {
1355           (void) CopyMagickString(keyword,token,MaxTextExtent);
1356           GetMagickToken(q,&q,token);
1357           if (*token != '=')
1358             continue;
1359           GetMagickToken(q,&q,token);
1360           if (LocaleCompare(keyword,"file") == 0)
1361             {
1362               if (depth > 200)
1363                 (void) ThrowMagickException(exception,GetMagickModule(),
1364                   ConfigureError,"IncludeElementNestedTooDeeply","`%s'",token);
1365               else
1366                 {
1367                   char
1368                     path[MaxTextExtent],
1369                     *xml;
1370
1371                   GetPathComponent(filename,HeadPath,path);
1372                   if (*path != '\0')
1373                     (void) ConcatenateMagickString(path,DirectorySeparator,
1374                       MaxTextExtent);
1375                   if (*token == *DirectorySeparator)
1376                     (void) CopyMagickString(path,token,MaxTextExtent);
1377                   else
1378                     (void) ConcatenateMagickString(path,token,MaxTextExtent);
1379                   xml=FileToString(path,~0,exception);
1380                   if (xml != (char *) NULL)
1381                     {
1382                       status|=LoadLogList(xml,path,depth+1,exception);
1383                       xml=DestroyString(xml);
1384                     }
1385                 }
1386             }
1387         }
1388         continue;
1389       }
1390     if (LocaleCompare(keyword,"<logmap>") == 0)
1391       {
1392         /*
1393           Allocate memory for the log list.
1394         */
1395         log_info=(LogInfo *) AcquireMagickMemory(sizeof(*log_info));
1396         if (log_info == (LogInfo *) NULL)
1397           ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
1398         (void) ResetMagickMemory(log_info,0,sizeof(*log_info));
1399         log_info->path=ConstantString(filename);
1400         GetTimerInfo((TimerInfo *) &log_info->timer);
1401         log_info->exempt=MagickFalse;
1402         log_info->signature=MagickSignature;
1403         continue;
1404       }
1405     if (log_info == (LogInfo *) NULL)
1406       continue;
1407     if (LocaleCompare(keyword,"</logmap>") == 0)
1408       {
1409         status=AppendValueToLinkedList(log_list,log_info);
1410         if (status == MagickFalse)
1411           (void) ThrowMagickException(exception,GetMagickModule(),
1412             ResourceLimitError,"MemoryAllocationFailed","`%s'",filename);
1413         log_info=(LogInfo *) NULL;
1414       }
1415     GetMagickToken(q,(const char **) NULL,token);
1416     if (*token != '=')
1417       continue;
1418     GetMagickToken(q,&q,token);
1419     GetMagickToken(q,&q,token);
1420     switch (*keyword)
1421     {
1422       case 'E':
1423       case 'e':
1424       {
1425         if (LocaleCompare((char *) keyword,"events") == 0)
1426           {
1427             log_info->event_mask=(LogEventType) (log_info->event_mask |
1428               ParseCommandOption(MagickLogEventOptions,MagickTrue,token));
1429             break;
1430           }
1431         break;
1432       }
1433       case 'F':
1434       case 'f':
1435       {
1436         if (LocaleCompare((char *) keyword,"filename") == 0)
1437           {
1438             if (log_info->filename != (char *) NULL)
1439               log_info->filename=(char *)
1440                 RelinquishMagickMemory(log_info->filename);
1441             log_info->filename=ConstantString(token);
1442             break;
1443           }
1444         if (LocaleCompare((char *) keyword,"format") == 0)
1445           {
1446             if (log_info->format != (char *) NULL)
1447               log_info->format=(char *)
1448                 RelinquishMagickMemory(log_info->format);
1449             log_info->format=ConstantString(token);
1450             break;
1451           }
1452         break;
1453       }
1454       case 'G':
1455       case 'g':
1456       {
1457         if (LocaleCompare((char *) keyword,"generations") == 0)
1458           {
1459             if (LocaleCompare(token,"unlimited") == 0)
1460               {
1461                 log_info->generations=(~0UL);
1462                 break;
1463               }
1464             log_info->generations=StringToUnsignedLong(token);
1465             break;
1466           }
1467         break;
1468       }
1469       case 'L':
1470       case 'l':
1471       {
1472         if (LocaleCompare((char *) keyword,"limit") == 0)
1473           {
1474             if (LocaleCompare(token,"unlimited") == 0)
1475               {
1476                 log_info->limit=(~0UL);
1477                 break;
1478               }
1479             log_info->limit=StringToUnsignedLong(token);
1480             break;
1481           }
1482         break;
1483       }
1484       case 'O':
1485       case 'o':
1486       {
1487         if (LocaleCompare((char *) keyword,"output") == 0)
1488           {
1489             log_info->handler_mask=(LogHandlerType)
1490               (log_info->handler_mask | ParseLogHandlers(token));
1491             break;
1492           }
1493         break;
1494       }
1495       default:
1496         break;
1497     }
1498   }
1499   token=DestroyString(token);
1500   if (log_list == (LinkedListInfo *) NULL)
1501     return(MagickFalse);
1502   return(status != 0 ? MagickTrue : MagickFalse);
1503 }
1504 \f
1505 /*
1506 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1507 %                                                                             %
1508 %                                                                             %
1509 %                                                                             %
1510 %  L o a d L o g L i s t s                                                    %
1511 %                                                                             %
1512 %                                                                             %
1513 %                                                                             %
1514 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1515 %
1516 %  LoadLogLists() loads one or more log configuration file which provides a
1517 %  mapping between log attributes and log name.
1518 %
1519 %  The format of the LoadLogLists method is:
1520 %
1521 %      MagickBooleanType LoadLogLists(const char *filename,
1522 %        ExceptionInfo *exception)
1523 %
1524 %  A description of each parameter follows:
1525 %
1526 %    o filename: the log configuration filename.
1527 %
1528 %    o exception: return any errors or warnings in this structure.
1529 %
1530 */
1531 static MagickBooleanType LoadLogLists(const char *filename,
1532   ExceptionInfo *exception)
1533 {
1534   const StringInfo
1535     *option;
1536
1537   LinkedListInfo
1538     *options;
1539
1540   MagickStatusType
1541     status;
1542
1543   register ssize_t
1544     i;
1545
1546   /*
1547     Load external log map.
1548   */
1549   if (log_list == (LinkedListInfo *) NULL)
1550     {
1551       log_list=NewLinkedList(0);
1552       if (log_list == (LinkedListInfo *) NULL)
1553         {
1554           ThrowFileException(exception,ResourceLimitError,
1555             "MemoryAllocationFailed",filename);
1556           return(MagickFalse);
1557         }
1558     }
1559   status=MagickTrue;
1560   options=GetConfigureOptions(filename,exception);
1561   option=(const StringInfo *) GetNextValueInLinkedList(options);
1562   while (option != (const StringInfo *) NULL)
1563   {
1564     status|=LoadLogList((const char *) GetStringInfoDatum(option),
1565       GetStringInfoPath(option),0,exception);
1566     option=(const StringInfo *) GetNextValueInLinkedList(options);
1567   }
1568   options=DestroyConfigureOptions(options);
1569   /*
1570     Load built-in log map.
1571   */
1572   for (i=0; i < (ssize_t) (sizeof(LogMap)/sizeof(*LogMap)); i++)
1573   {
1574     LogInfo
1575       *log_info;
1576
1577     register const LogMapInfo
1578       *p;
1579
1580     p=LogMap+i;
1581     log_info=(LogInfo *) AcquireMagickMemory(sizeof(*log_info));
1582     if (log_info == (LogInfo *) NULL)
1583       {
1584         (void) ThrowMagickException(exception,GetMagickModule(),
1585           ResourceLimitError,"MemoryAllocationFailed","`%s'",log_info->name);
1586         continue;
1587       }
1588     (void) ResetMagickMemory(log_info,0,sizeof(*log_info));
1589     log_info->path=(char *) "[built-in]";
1590     GetTimerInfo((TimerInfo *) &log_info->timer);
1591     log_info->event_mask=p->event_mask;
1592     log_info->handler_mask=p->handler_mask;
1593     log_info->filename=ConstantString(p->filename);
1594     log_info->format=ConstantString(p->format);
1595     log_info->exempt=MagickTrue;
1596     log_info->signature=MagickSignature;
1597     status|=AppendValueToLinkedList(log_list,log_info);
1598     if (status == MagickFalse)
1599       (void) ThrowMagickException(exception,GetMagickModule(),
1600         ResourceLimitError,"MemoryAllocationFailed","`%s'",log_info->name);
1601   }
1602   return(status != 0 ? MagickTrue : MagickFalse);
1603 }
1604 \f
1605 /*
1606 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1607 %                                                                             %
1608 %                                                                             %
1609 %                                                                             %
1610 +   P a r s e L o g H a n d l e r s                                           %
1611 %                                                                             %
1612 %                                                                             %
1613 %                                                                             %
1614 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1615 %
1616 %  ParseLogHandlers() parses a string defining which handlers takes a log
1617 %  message and exports them.
1618 %
1619 %  The format of the ParseLogHandlers method is:
1620 %
1621 %      LogHandlerType ParseLogHandlers(const char *handlers)
1622 %
1623 %  A description of each parameter follows:
1624 %
1625 %    o handlers: one or more handlers separated by commas.
1626 %
1627 */
1628 static LogHandlerType ParseLogHandlers(const char *handlers)
1629 {
1630   LogHandlerType
1631     handler_mask;
1632
1633   register const char
1634     *p;
1635
1636   register ssize_t
1637     i;
1638
1639   size_t
1640     length;
1641
1642   handler_mask=NoHandler;
1643   for (p=handlers; p != (char *) NULL; p=strchr(p,','))
1644   {
1645     while ((*p != '\0') && ((isspace((int) ((unsigned char) *p)) != 0) ||
1646            (*p == ',')))
1647       p++;
1648     for (i=0; LogHandlers[i].name != (char *) NULL; i++)
1649     {
1650       length=strlen(LogHandlers[i].name);
1651       if (LocaleNCompare(p,LogHandlers[i].name,length) == 0)
1652         {
1653           handler_mask=(LogHandlerType) (handler_mask | LogHandlers[i].handler);
1654           break;
1655         }
1656     }
1657     if (LogHandlers[i].name == (char *) NULL)
1658       return(UndefinedHandler);
1659   }
1660   return(handler_mask);
1661 }
1662 \f
1663 /*
1664 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1665 %                                                                             %
1666 %                                                                             %
1667 %                                                                             %
1668 %   S e t L o g E v e n t M a s k                                             %
1669 %                                                                             %
1670 %                                                                             %
1671 %                                                                             %
1672 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1673 %
1674 %  SetLogEventMask() accepts a list that determines which events to log.  All
1675 %  other events are ignored.  By default, no debug is enabled.  This method
1676 %  returns the previous log event mask.
1677 %
1678 %  The format of the SetLogEventMask method is:
1679 %
1680 %      LogEventType SetLogEventMask(const char *events)
1681 %
1682 %  A description of each parameter follows:
1683 %
1684 %    o events: log these events.
1685 %
1686 */
1687 MagickExport LogEventType SetLogEventMask(const char *events)
1688 {
1689   ExceptionInfo
1690     *exception;
1691
1692   LogInfo
1693     *log_info;
1694
1695   ssize_t
1696     option;
1697
1698   exception=AcquireExceptionInfo();
1699   log_info=(LogInfo *) GetLogInfo("*",exception);
1700   exception=DestroyExceptionInfo(exception);
1701   option=ParseCommandOption(MagickLogEventOptions,MagickTrue,events);
1702   LockSemaphoreInfo(log_semaphore);
1703   log_info=(LogInfo *) GetValueFromLinkedList(log_list,0);
1704   log_info->event_mask=(LogEventType) option;
1705   if (option == -1)
1706     log_info->event_mask=UndefinedEvents;
1707   UnlockSemaphoreInfo(log_semaphore);
1708   return(log_info->event_mask);
1709 }
1710 \f
1711 /*
1712 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1713 %                                                                             %
1714 %                                                                             %
1715 %                                                                             %
1716 %   S e t L o g F o r m a t                                                   %
1717 %                                                                             %
1718 %                                                                             %
1719 %                                                                             %
1720 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1721 %
1722 %  SetLogFormat() sets the format for the "human readable" log record.
1723 %
1724 %  The format of the LogMagickFormat method is:
1725 %
1726 %      SetLogFormat(const char *format)
1727 %
1728 %  A description of each parameter follows:
1729 %
1730 %    o format: the log record format.
1731 %
1732 */
1733 MagickExport void SetLogFormat(const char *format)
1734 {
1735   LogInfo
1736     *log_info;
1737
1738   ExceptionInfo
1739     *exception;
1740
1741   exception=AcquireExceptionInfo();
1742   log_info=(LogInfo *) GetLogInfo("*",exception);
1743   exception=DestroyExceptionInfo(exception);
1744   LockSemaphoreInfo(log_semaphore);
1745   if (log_info->format != (char *) NULL)
1746     log_info->format=DestroyString(log_info->format);
1747   log_info->format=ConstantString(format);
1748   UnlockSemaphoreInfo(log_semaphore);
1749 }
1750 \f
1751 /*
1752 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1753 %                                                                             %
1754 %                                                                             %
1755 %                                                                             %
1756 %   S e t L o g N a m e                                                       %
1757 %                                                                             %
1758 %                                                                             %
1759 %                                                                             %
1760 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1761 %
1762 %  SetLogName() sets the log name and returns it.
1763 %
1764 %  The format of the SetLogName method is:
1765 %
1766 %      const char *SetLogName(const char *name)
1767 %
1768 %  A description of each parameter follows:
1769 %
1770 %    o log_name: SetLogName() returns the current client name.
1771 %
1772 %    o name: Specifies the new client name.
1773 %
1774 */
1775 MagickExport const char *SetLogName(const char *name)
1776 {
1777   if ((name != (char *) NULL) && (*name != '\0'))
1778     (void) CopyMagickString(log_name,name,MaxTextExtent);
1779   return(log_name);
1780 }