summaryrefslogtreecommitdiffstats
path: root/ftparchive/apt-ftparchive.cc
blob: 0f6587281f3e869ed6f7dd404a929fab69302b59 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
// -*- mode: cpp; mode: fold -*-
// Description								/*{{{*/
/* ######################################################################

   apt-ftparchive - Efficient work-alike for dpkg-scanpackages

   Let contents be disabled from the conf
   
   ##################################################################### */
									/*}}}*/
// Include Files							/*{{{*/
#include <config.h>

#include <apt-pkg/cmndline.h>
#include <apt-pkg/configuration.h>
#include <apt-pkg/error.h>
#include <apt-pkg/fileutl.h>
#include <apt-pkg/init.h>
#include <apt-pkg/strutl.h>

#include <apt-private/private-cmndline.h>
#include <apt-private/private-main.h>
#include <apt-private/private-output.h>

#include <algorithm>
#include <chrono>
#include <climits>
#include <functional>
#include <iostream>
#include <string>
#include <vector>
#include <locale.h>
#include <stdio.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <time.h>
#include <math.h>

#include "apt-ftparchive.h"
#include "cachedb.h"
#include "multicompress.h"
#include "override.h"
#include "writer.h"

#include <apti18n.h>
									/*}}}*/

using namespace std;
unsigned Quiet = 0;

static struct timeval GetTimevalFromSteadyClock()			/*{{{*/
{
   auto const Time = std::chrono::steady_clock::now().time_since_epoch();
   auto const Time_sec = std::chrono::duration_cast<std::chrono::seconds>(Time);
   auto const Time_usec = std::chrono::duration_cast<std::chrono::microseconds>(Time - Time_sec);
   return { static_cast<time_t>(Time_sec.count()), static_cast<suseconds_t>(Time_usec.count()) };
}
									/*}}}*/
static auto GetTimeDeltaSince(struct timeval StartTime)			/*{{{*/
{
   auto const NewTime = GetTimevalFromSteadyClock();
   std::chrono::duration<double> Delta =
      std::chrono::seconds(NewTime.tv_sec - StartTime.tv_sec) +
      std::chrono::microseconds(NewTime.tv_usec - StartTime.tv_usec);
   return llround(Delta.count());
}
									/*}}}*/

// struct PackageMap - List of all package files in the config file	/*{{{*/
// ---------------------------------------------------------------------
/* */
struct PackageMap
{
   // General Stuff
   string BaseDir;
   string InternalPrefix;
   string FLFile;
   string PkgExt;
   string SrcExt;
   
   // Stuff for the Package File
   string PkgFile;
   string BinCacheDB;
   string SrcCacheDB;
   string BinOverride;
   string ExtraOverride;

   // We generate for this given arch
   string Arch;
   bool IncludeArchAll;
   
   // Stuff for the Source File
   string SrcFile;
   string SrcOverride;
   string SrcExtraOverride;

   // Translation master file
   bool LongDesc;
   TranslationWriter *TransWriter;

   // Contents 
   string Contents;
   string ContentsHead;
   
   // Random things
   string Tag;
   string PkgCompress;
   string CntCompress;
   string SrcCompress;
   string PathPrefix;
   unsigned int DeLinkLimit;
   mode_t Permissions;
   
   bool ContentsDone;
   bool PkgDone;
   bool SrcDone;
   time_t ContentsMTime;
   
   struct ContentsCompare
   {
      inline bool operator() (const PackageMap &x,const PackageMap &y)
      {return x.ContentsMTime < y.ContentsMTime;};
   };
    
   struct DBCompare
   {
      inline bool operator() (const PackageMap &x,const PackageMap &y)
      {return x.BinCacheDB < y.BinCacheDB;};
   };  

   struct SrcDBCompare
   {
      inline bool operator() (const PackageMap &x,const PackageMap &y)
      {return x.SrcCacheDB < y.SrcCacheDB;};
   };
   
   void GetGeneral(Configuration &Setup,Configuration &Block);
   bool GenPackages(Configuration &Setup,struct CacheDB::Stats &Stats);
   bool GenSources(Configuration &Setup,struct CacheDB::Stats &Stats);
   bool GenContents(Configuration &Setup,
		    vector<PackageMap>::iterator Begin,
		    vector<PackageMap>::iterator End,
		    unsigned long &Left);
   
   PackageMap() : IncludeArchAll(true), LongDesc(true), TransWriter(NULL),
		  DeLinkLimit(0), Permissions(1), ContentsDone(false),
		  PkgDone(false), SrcDone(false), ContentsMTime(0) {};
};
									/*}}}*/

// PackageMap::GetGeneral - Common per-section definitions		/*{{{*/
// ---------------------------------------------------------------------
/* */
void PackageMap::GetGeneral(Configuration &Setup,Configuration &Block)
{
   PathPrefix = Block.Find("PathPrefix");
   
   if (Block.FindB("External-Links",true) == false)
      DeLinkLimit = Setup.FindI("Default::DeLinkLimit", std::numeric_limits<unsigned int>::max());
   else
      DeLinkLimit = 0;
   
   PkgCompress = Block.Find("Packages::Compress",
			    Setup.Find("Default::Packages::Compress",". gzip").c_str());
   CntCompress = Block.Find("Contents::Compress",
			    Setup.Find("Default::Contents::Compress",". gzip").c_str());
   SrcCompress = Block.Find("Sources::Compress",
			    Setup.Find("Default::Sources::Compress",". gzip").c_str());
   
   SrcExt = Block.Find("Sources::Extensions",
		       Setup.Find("Default::Sources::Extensions",".dsc").c_str());
   PkgExt = Block.Find("Packages::Extensions",
		       Setup.Find("Default::Packages::Extensions",".deb").c_str());
   
   Permissions = Setup.FindI("Default::FileMode",0644);

   if (FLFile.empty() == false)
      FLFile = flCombine(Setup.Find("Dir::FileListDir"),FLFile);
   
   if (Contents == " ")
      Contents= string();   
}
									/*}}}*/
// PackageMap::GenPackages - Actually generate a Package file		/*{{{*/
// ---------------------------------------------------------------------
/* This generates the Package File described by this object. */
bool PackageMap::GenPackages(Configuration &Setup,struct CacheDB::Stats &Stats)
{   
   if (PkgFile.empty() == true)
      return true;
   
   string ArchiveDir = Setup.FindDir("Dir::ArchiveDir");
   string OverrideDir = Setup.FindDir("Dir::OverrideDir");
   string CacheDir = Setup.FindDir("Dir::CacheDir");

   struct timeval StartTime = GetTimevalFromSteadyClock();

   PkgDone = true;
   
   // Create a package writer object.
   MultiCompress Comp(flCombine(ArchiveDir,PkgFile),
		      PkgCompress,Permissions);
   PackagesWriter Packages(&Comp.Input, TransWriter, flCombine(CacheDir,BinCacheDB),
			   flCombine(OverrideDir,BinOverride),
			   flCombine(OverrideDir,ExtraOverride),
			   Arch, IncludeArchAll);
   if (PkgExt.empty() == false && Packages.SetExts(PkgExt) == false)
      return _error->Error(_("Package extension list is too long"));
   if (_error->PendingError() == true)
      return _error->Error(_("Error processing directory %s"),BaseDir.c_str());
   
   Packages.PathPrefix = PathPrefix;
   Packages.DirStrip = ArchiveDir;
   Packages.InternalPrefix = flCombine(ArchiveDir,InternalPrefix);

   Packages.LongDescription = LongDesc;

   Packages.Stats.DeLinkBytes = Stats.DeLinkBytes;
   Packages.DeLinkLimit = DeLinkLimit;

   if (_error->PendingError() == true)
      return _error->Error(_("Error processing directory %s"),BaseDir.c_str());
   
   c0out << ' ' << BaseDir << ":" << flush;
   
   // Do recursive directory searching
   if (FLFile.empty() == true)
   {
      if (Packages.RecursiveScan(flCombine(ArchiveDir,BaseDir)) == false)
	 return false;
   }
   else
   {
      if (Packages.LoadFileList(ArchiveDir,FLFile) == false)
	 return false;
   }
   
   Packages.Output = 0;      // Just in case
   
   // Finish compressing
   unsigned long long Size;
   if (Comp.Finalize(Size) == false)
   {
      c0out << endl;
      return _error->Error(_("Error processing directory %s"),BaseDir.c_str());
   }
   
   if (Size != 0)
      c0out << " New "
             << SizeToStr(Size) << "B ";
   else
      c0out << ' ';

   c0out << Packages.Stats.Packages << " files " <<
/*      SizeToStr(Packages.Stats.MD5Bytes) << "B/" << */
      SizeToStr(Packages.Stats.Bytes) << "B " <<
      TimeToStr(GetTimeDeltaSince(StartTime)) << endl;

   if(_config->FindB("APT::FTPArchive::ShowCacheMisses", false) == true)
     c0out << " Misses in Cache: " << Packages.Stats.Misses<< endl;
   
   Stats.Add(Packages.Stats);
   Stats.DeLinkBytes = Packages.Stats.DeLinkBytes;
   
   return !_error->PendingError();
}

									/*}}}*/
// PackageMap::GenSources - Actually generate a Source file		/*{{{*/
// ---------------------------------------------------------------------
/* This generates the Sources File described by this object. */
bool PackageMap::GenSources(Configuration &Setup,struct CacheDB::Stats &Stats)
{   
   if (SrcFile.empty() == true)
      return true;
   
   string ArchiveDir = Setup.FindDir("Dir::ArchiveDir");
   string OverrideDir = Setup.FindDir("Dir::OverrideDir");
   string CacheDir = Setup.FindDir("Dir::CacheDir");

   struct timeval StartTime = GetTimevalFromSteadyClock();
   SrcDone = true;
   
   // Create a package writer object.
   MultiCompress Comp(flCombine(ArchiveDir,SrcFile),
		      SrcCompress,Permissions);
   SourcesWriter Sources(&Comp.Input, flCombine(CacheDir, SrcCacheDB),
			 flCombine(OverrideDir,BinOverride),
			 flCombine(OverrideDir,SrcOverride),
			 flCombine(OverrideDir,SrcExtraOverride));
   if (SrcExt.empty() == false && Sources.SetExts(SrcExt) == false)
      return _error->Error(_("Source extension list is too long"));
   if (_error->PendingError() == true)
      return _error->Error(_("Error processing directory %s"),BaseDir.c_str());
   
   Sources.PathPrefix = PathPrefix;
   Sources.DirStrip = ArchiveDir;
   Sources.InternalPrefix = flCombine(ArchiveDir,InternalPrefix);

   Sources.DeLinkLimit = DeLinkLimit;
   Sources.Stats.DeLinkBytes = Stats.DeLinkBytes;

   if (_error->PendingError() == true)
      return _error->Error(_("Error processing directory %s"),BaseDir.c_str());

   c0out << ' ' << BaseDir << ":" << flush;
   
   // Do recursive directory searching
   if (FLFile.empty() == true)
   {
      if (Sources.RecursiveScan(flCombine(ArchiveDir,BaseDir))== false)
	 return false;
   }   
   else
   {
      if (Sources.LoadFileList(ArchiveDir,FLFile) == false)
	 return false;
   }
   Sources.Output = 0;      // Just in case
   
   // Finish compressing
   unsigned long long Size;
   if (Comp.Finalize(Size) == false)
   {
      c0out << endl;
      return _error->Error(_("Error processing directory %s"),BaseDir.c_str());
   }
      
   if (Size != 0)
      c0out << " New "
             << SizeToStr(Size) << "B ";
   else
      c0out << ' ';
   
   c0out << Sources.Stats.Packages << " pkgs in " <<
      TimeToStr(GetTimeDeltaSince(StartTime)) << endl;

   if(_config->FindB("APT::FTPArchive::ShowCacheMisses", false) == true)
     c0out << " Misses in Cache: " << Sources.Stats.Misses << endl;

   Stats.Add(Sources.Stats);
   Stats.DeLinkBytes = Sources.Stats.DeLinkBytes;
   
   return !_error->PendingError();
}
									/*}}}*/
// PackageMap::GenContents - Actually generate a Contents file		/*{{{*/
// ---------------------------------------------------------------------
/* This generates the contents file partially described by this object.
   It searches the given iterator range for other package files that map
   into this contents file and includes their data as well when building. */
bool PackageMap::GenContents(Configuration &Setup,
			     vector<PackageMap>::iterator Begin,
			     vector<PackageMap>::iterator End,
			     unsigned long &Left)
{
   if (Contents.empty() == true)
      return true;
   
   if (Left == 0)
      return true;
   
   string ArchiveDir = Setup.FindDir("Dir::ArchiveDir");
   string CacheDir = Setup.FindDir("Dir::CacheDir");
   string OverrideDir = Setup.FindDir("Dir::OverrideDir");

   struct timeval StartTime = GetTimevalFromSteadyClock();

   // Create a package writer object.
   MultiCompress Comp(flCombine(ArchiveDir,this->Contents),
		      CntCompress,Permissions);
   Comp.UpdateMTime = Setup.FindI("Default::ContentsAge",10)*24*60*60;
   ContentsWriter Contents(&Comp.Input, "", Arch, IncludeArchAll);
   if (PkgExt.empty() == false && Contents.SetExts(PkgExt) == false)
      return _error->Error(_("Package extension list is too long"));
   if (_error->PendingError() == true)
      return false;

   if (_error->PendingError() == true)
      return false;

   // Write the header out.
   if (ContentsHead.empty() == false)
   {
      FileFd Head(flCombine(OverrideDir,ContentsHead),FileFd::ReadOnly);
      if (_error->PendingError() == true)
	 return false;

      unsigned long long Size = Head.Size();
      unsigned char Buf[4096];
      while (Size != 0)
      {
	 unsigned long long ToRead = Size;
	 if (Size > sizeof(Buf))
	    ToRead = sizeof(Buf);

	 if (Head.Read(Buf,ToRead) == false)
	    return false;

	 if (Comp.Input.Write(Buf, ToRead) == false)
	    return _error->Errno("fwrite",_("Error writing header to contents file"));

	 Size -= ToRead;
      }
   }

   /* Go over all the package file records and parse all the package
      files associated with this contents file into one great big honking
      memory structure, then dump the sorted version */
   c0out << ' ' << this->Contents << ":" << flush;
   for (vector<PackageMap>::iterator I = Begin; I != End; ++I)
   {
      if (I->Contents != this->Contents)
	 continue;
      
      Contents.Prefix = ArchiveDir;
      Contents.ReadyDB(flCombine(CacheDir,I->BinCacheDB));
      Contents.ReadFromPkgs(flCombine(ArchiveDir,I->PkgFile),
			    I->PkgCompress);
      
      I->ContentsDone = true;	    
   }
   
   Contents.Finish();
   
   // Finish compressing
   unsigned long long Size;
   if (Comp.Finalize(Size) == false || _error->PendingError() == true)
   {
      c0out << endl;
      return _error->Error(_("Error processing contents %s"),
			   this->Contents.c_str());
   }
   
   if (Size != 0)
   {
      c0out << " New " << SizeToStr(Size) << "B ";
      if (Left > Size)
	 Left -= Size;
      else
	 Left = 0;
   }
   else
      c0out << ' ';
   
   if(_config->FindB("APT::FTPArchive::ShowCacheMisses", false) == true)
     c0out << " Misses in Cache: " << Contents.Stats.Misses<< endl;

   c0out << Contents.Stats.Packages << " files " <<
      SizeToStr(Contents.Stats.Bytes) << "B " <<
      TimeToStr(GetTimeDeltaSince(StartTime)) << endl;
   
   return true;
}
									/*}}}*/

// LoadTree - Load a 'tree' section from the Generate Config		/*{{{*/
// ---------------------------------------------------------------------
/* This populates the PkgList with all the possible permutations of the
   section/arch lists. */
static void LoadTree(vector<PackageMap> &PkgList, std::vector<TranslationWriter*> &TransList, Configuration &Setup)
{   
   // Load the defaults
   string DDir = Setup.Find("TreeDefault::Directory",
			    "$(DIST)/$(SECTION)/binary-$(ARCH)/");
   string DSDir = Setup.Find("TreeDefault::SrcDirectory",
			    "$(DIST)/$(SECTION)/source/");
   string DPkg = Setup.Find("TreeDefault::Packages",
			    "$(DIST)/$(SECTION)/binary-$(ARCH)/Packages");
   string DTrans = Setup.Find("TreeDefault::Translation",
			    "$(DIST)/$(SECTION)/i18n/Translation-en");
   string DIPrfx = Setup.Find("TreeDefault::InternalPrefix",
			    "$(DIST)/$(SECTION)/");
   string DContents = Setup.Find("TreeDefault::Contents",
			    "$(DIST)/$(SECTION)/Contents-$(ARCH)");
   string DContentsH = Setup.Find("TreeDefault::Contents::Header","");
   string DBCache = Setup.Find("TreeDefault::BinCacheDB",
			       "packages-$(ARCH).db");
   string SrcDBCache = Setup.Find("TreeDefault::SrcCacheDB",
			       "sources-$(SECTION).db");
   string DSources = Setup.Find("TreeDefault::Sources",
				"$(DIST)/$(SECTION)/source/Sources");
   string DFLFile = Setup.Find("TreeDefault::FileList", "");
   string DSFLFile = Setup.Find("TreeDefault::SourceFileList", "");

   mode_t const Permissions = Setup.FindI("Default::FileMode",0644);

   bool const LongDescription = Setup.FindB("Default::LongDescription",
					_config->FindB("APT::FTPArchive::LongDescription", true));
   string const TranslationCompress = Setup.Find("Default::Translation::Compress",". gzip").c_str();
   bool const ConfIncludeArchAllExists = _config->Exists("APT::FTPArchive::IncludeArchitectureAll");
   bool const ConfIncludeArchAll = _config->FindB("APT::FTPArchive::IncludeArchitectureAll", true);

   // Process 'tree' type sections
   const Configuration::Item *Top = Setup.Tree("tree");
   for (Top = (Top == 0?0:Top->Child); Top != 0;)
   {
      Configuration Block(Top);
      string Dist = Top->Tag;

      // Parse the sections
      string Tmp = Block.Find("Sections");
      const char *Sections = Tmp.c_str();
      string Section;
      while (ParseQuoteWord(Sections,Section) == true)
      {
	 struct SubstVar Vars[] = {{"$(DIST)",&Dist},
					 {"$(SECTION)",&Section},
					 {"$(ARCH)",nullptr},
					 {nullptr, nullptr}};
	 mode_t const Perms = Block.FindI("FileMode", Permissions);
	 bool const LongDesc = Block.FindB("LongDescription", LongDescription);
	 TranslationWriter *TransWriter = nullptr;

	 std::string Tmp2 = Block.Find("Architectures");
	 std::transform(Tmp2.begin(), Tmp2.end(), Tmp2.begin(), ::tolower);
	 std::vector<std::string> const Archs = VectorizeString(Tmp2, ' ');
	 bool IncludeArchAll;
	 if (ConfIncludeArchAllExists == true)
	    IncludeArchAll = ConfIncludeArchAll;
	 else
	    IncludeArchAll = std::find(Archs.begin(), Archs.end(), "all") == Archs.end();
	 for (auto const& Arch: Archs)
	 {
	    if (Arch.empty()) continue;
	    Vars[2].Contents = &Arch;
	    PackageMap Itm;
	    Itm.Permissions = Perms;
	    Itm.BinOverride = SubstVar(Block.Find("BinOverride"),Vars);
	    Itm.InternalPrefix = SubstVar(Block.Find("InternalPrefix",DIPrfx.c_str()),Vars);

	    if (Arch == "source")
	    {
	       Itm.SrcOverride = SubstVar(Block.Find("SrcOverride"),Vars);
	       Itm.BaseDir = SubstVar(Block.Find("SrcDirectory",DSDir.c_str()),Vars);
	       Itm.SrcFile = SubstVar(Block.Find("Sources",DSources.c_str()),Vars);
	       Itm.Tag = SubstVar("$(DIST)/$(SECTION)/source",Vars);
	       Itm.FLFile = SubstVar(Block.Find("SourceFileList",DSFLFile.c_str()),Vars);
	       Itm.SrcExtraOverride = SubstVar(Block.Find("SrcExtraOverride"),Vars);
	       Itm.SrcCacheDB = SubstVar(Block.Find("SrcCacheDB",SrcDBCache.c_str()),Vars);
	    }
	    else
	    {
	       Itm.BinCacheDB = SubstVar(Block.Find("BinCacheDB",DBCache.c_str()),Vars);
	       Itm.BaseDir = SubstVar(Block.Find("Directory",DDir.c_str()),Vars);
	       Itm.PkgFile = SubstVar(Block.Find("Packages",DPkg.c_str()),Vars);
	       Itm.Tag = SubstVar("$(DIST)/$(SECTION)/$(ARCH)",Vars);
	       Itm.Arch = Arch;
	       Itm.IncludeArchAll = IncludeArchAll;
	       Itm.LongDesc = LongDesc;
	       if (TransWriter == NULL && DTrans.empty() == false && LongDesc == false && DTrans != "/dev/null")
	       {
		  string const TranslationFile = flCombine(Setup.FindDir("Dir::ArchiveDir"),
			SubstVar(Block.Find("Translation", DTrans.c_str()), Vars));
		  string const TransCompress = Block.Find("Translation::Compress", TranslationCompress);
		  TransWriter = new TranslationWriter(TranslationFile, TransCompress, Perms);
		  TransList.push_back(TransWriter);
	       }
	       Itm.TransWriter = TransWriter;
	       Itm.Contents = SubstVar(Block.Find("Contents",DContents.c_str()),Vars);
	       Itm.ContentsHead = SubstVar(Block.Find("Contents::Header",DContentsH.c_str()),Vars);
	       Itm.FLFile = SubstVar(Block.Find("FileList",DFLFile.c_str()),Vars);
	       Itm.ExtraOverride = SubstVar(Block.Find("ExtraOverride"),Vars);
	    }

	    Itm.GetGeneral(Setup,Block);
	    PkgList.push_back(Itm);
	 }
      }

      Top = Top->Next;
   }
}
									/*}}}*/
static void UnloadTree(std::vector<TranslationWriter*> const &Trans)		/*{{{*/
{
   for (std::vector<TranslationWriter*>::const_reverse_iterator T = Trans.rbegin(); T != Trans.rend(); ++T)
      delete *T;
}
									/*}}}*/
// LoadBinDir - Load a 'bindirectory' section from the Generate Config	/*{{{*/
// ---------------------------------------------------------------------
/* */
static void LoadBinDir(vector<PackageMap> &PkgList,Configuration &Setup)
{
   mode_t const Permissions = Setup.FindI("Default::FileMode",0644);

   // Process 'bindirectory' type sections
   const Configuration::Item *Top = Setup.Tree("bindirectory");
   for (Top = (Top == 0?0:Top->Child); Top != 0;)
   {
      Configuration Block(Top);
      
      PackageMap Itm;
      Itm.PkgFile = Block.Find("Packages");
      Itm.SrcFile = Block.Find("Sources");
      Itm.BinCacheDB = Block.Find("BinCacheDB");
      Itm.SrcCacheDB = Block.Find("SrcCacheDB");
      Itm.BinOverride = Block.Find("BinOverride");
      Itm.ExtraOverride = Block.Find("ExtraOverride");
      Itm.SrcExtraOverride = Block.Find("SrcExtraOverride");
      Itm.SrcOverride = Block.Find("SrcOverride");
      Itm.BaseDir = Top->Tag;
      Itm.FLFile = Block.Find("FileList");
      Itm.InternalPrefix = Block.Find("InternalPrefix",Top->Tag.c_str());
      Itm.Contents = Block.Find("Contents");
      Itm.ContentsHead = Block.Find("Contents::Header");
      Itm.Permissions = Block.FindI("FileMode", Permissions);
      
      Itm.GetGeneral(Setup,Block);
      PkgList.push_back(Itm);
      
      Top = Top->Next;
   }      
}
									/*}}}*/

static bool ShowHelp(CommandLine &)					/*{{{*/
{
   std::cout <<
    _("Usage: apt-ftparchive [options] command\n"
      "Commands: packages binarypath [overridefile [pathprefix]]\n"
      "          sources srcpath [overridefile [pathprefix]]\n"
      "          contents path\n"
      "          release path\n"
      "          generate config [groups]\n"
      "          clean config\n"
      "\n"
      "apt-ftparchive generates index files for Debian archives. It supports\n"
      "many styles of generation from fully automated to functional replacements\n"
      "for dpkg-scanpackages and dpkg-scansources\n"
      "\n"
      "apt-ftparchive generates Package files from a tree of .debs. The\n"
      "Package file contains the contents of all the control fields from\n"
      "each package as well as the MD5 hash and filesize. An override file\n"
      "is supported to force the value of Priority and Section.\n"
      "\n"
      "Similarly apt-ftparchive generates Sources files from a tree of .dscs.\n"
      "The --source-override option can be used to specify a src override file\n"
      "\n"
      "The 'packages' and 'sources' command should be run in the root of the\n"
      "tree. BinaryPath should point to the base of the recursive search and \n"
      "override file should contain the override flags. Pathprefix is\n"
      "appended to the filename fields if present. Example usage from the \n"
      "Debian archive:\n"
      "   apt-ftparchive packages dists/potato/main/binary-i386/ > \\\n"
      "               dists/potato/main/binary-i386/Packages\n"
      "\n"
      "Options:\n"
      "  -h    This help text\n"
      "  --md5 Control MD5 generation\n"
      "  -s=?  Source override file\n"
      "  -q    Quiet\n"
      "  -d=?  Select the optional caching database\n"
      "  --no-delink Enable delinking debug mode\n"
      "  --contents  Control contents file generation\n"
      "  -c=?  Read this configuration file\n"
      "  -o=?  Set an arbitrary configuration option") << endl;
   return true;
}
									/*}}}*/
// SimpleGenPackages - Generate a Packages file for a directory tree	/*{{{*/
// ---------------------------------------------------------------------
/* This emulates dpkg-scanpackages's command line interface. 'mostly' */
static bool SimpleGenPackages(CommandLine &CmdL)
{
   if (CmdL.FileSize() < 2)
      return ShowHelp(CmdL);
   
   string Override;
   if (CmdL.FileSize() >= 3)
      Override = CmdL.FileList[2];
   
   // Create a package writer object.
   PackagesWriter Packages(NULL, NULL, _config->Find("APT::FTPArchive::DB"),
			   Override, "", _config->Find("APT::FTPArchive::Architecture"),
			   _config->FindB("APT::FTPArchive::IncludeArchitectureAll", true));
   if (_error->PendingError() == true)
      return false;
   
   if (CmdL.FileSize() >= 4)
      Packages.PathPrefix = CmdL.FileList[3];
   
   // Do recursive directory searching
   if (Packages.RecursiveScan(CmdL.FileList[1]) == false)
      return false;

   // Give some stats if asked for
   if(_config->FindB("APT::FTPArchive::ShowCacheMisses", false) == true)
     c0out << " Misses in Cache: " << Packages.Stats.Misses<< endl;

   return true;
}
									/*}}}*/
// SimpleGenContents - Generate a Contents listing			/*{{{*/
// ---------------------------------------------------------------------
/* */
static bool SimpleGenContents(CommandLine &CmdL)
{
   if (CmdL.FileSize() < 2)
      return ShowHelp(CmdL);
   
   // Create a package writer object.
   ContentsWriter Contents(NULL, _config->Find("APT::FTPArchive::DB"), _config->Find("APT::FTPArchive::Architecture"));
   if (_error->PendingError() == true)
      return false;
   
   // Do recursive directory searching
   if (Contents.RecursiveScan(CmdL.FileList[1]) == false)
      return false;

   Contents.Finish();
   
   return true;
}
									/*}}}*/
// SimpleGenSources - Generate a Sources file for a directory tree	/*{{{*/
// ---------------------------------------------------------------------
/* This emulates dpkg-scanpackages's command line interface. 'mostly' */
static bool SimpleGenSources(CommandLine &CmdL)
{
   if (CmdL.FileSize() < 2)
      return ShowHelp(CmdL);
   
   string Override;
   if (CmdL.FileSize() >= 3)
      Override = CmdL.FileList[2];
   
   string SOverride;
   if (Override.empty() == false)
      SOverride = Override + ".src";
   
   SOverride = _config->Find("APT::FTPArchive::SourceOverride",
			     SOverride.c_str());
       
   // Create a package writer object.
   SourcesWriter Sources(NULL, _config->Find("APT::FTPArchive::DB"),Override,SOverride);
   if (_error->PendingError() == true)
      return false;
   
   if (CmdL.FileSize() >= 4)
      Sources.PathPrefix = CmdL.FileList[3];
   
   // Do recursive directory searching
   if (Sources.RecursiveScan(CmdL.FileList[1]) == false)
      return false;

   // Give some stats if asked for
   if(_config->FindB("APT::FTPArchive::ShowCacheMisses", false) == true)
     c0out << " Misses in Cache: " << Sources.Stats.Misses<< endl;

   return true;
}
									/*}}}*/
// SimpleGenRelease - Generate a Release file for a directory tree	/*{{{*/
// ---------------------------------------------------------------------
static bool SimpleGenRelease(CommandLine &CmdL)
{
   if (CmdL.FileSize() < 2)
      return ShowHelp(CmdL);

   string Dir = CmdL.FileList[1];

   ReleaseWriter Release(NULL, "");
   Release.DirStrip = Dir;

   if (_error->PendingError() == true)
      return false;

   if (Release.RecursiveScan(Dir) == false)
      return false;

   Release.Finish();

   return true;
}

									/*}}}*/
// DoGeneratePackagesAndSources - Helper for Generate                   /*{{{*/
// ---------------------------------------------------------------------
static bool DoGeneratePackagesAndSources(Configuration &Setup,
					 vector<PackageMap> &PkgList,
					 struct CacheDB::Stats &SrcStats,
					 struct CacheDB::Stats &Stats,
					 CommandLine &CmdL)
{
   if (CmdL.FileSize() <= 2)
   {
      for (vector<PackageMap>::iterator I = PkgList.begin(); I != PkgList.end(); ++I)
	 if (I->GenPackages(Setup,Stats) == false)
	    _error->DumpErrors();
      for (vector<PackageMap>::iterator I = PkgList.begin(); I != PkgList.end(); ++I)
	 if (I->GenSources(Setup,SrcStats) == false)
	    _error->DumpErrors();
   }
   else
   {
      // Make a choice list out of the package list..
      RxChoiceList *List = new RxChoiceList[2*PkgList.size()+1];
      RxChoiceList *End = List;
      for (vector<PackageMap>::iterator I = PkgList.begin(); I != PkgList.end(); ++I)
      {
	 End->UserData = &(*I);
	 End->Str = I->BaseDir.c_str();
	 End++;
	 
	 End->UserData = &(*I);
	 End->Str = I->Tag.c_str();
	 End++;	 
      }
      End->Str = 0;
     
      // Regex it
      if (RegexChoice(List,CmdL.FileList + 2,CmdL.FileList + CmdL.FileSize()) == 0)
      {
	 delete [] List;
	 return _error->Error(_("No selections matched"));
      }
      _error->DumpErrors();
      
      // Do the generation for Packages
      for (End = List; End->Str != 0; ++End)
      {
	 if (End->Hit == false)
	    continue;
	 
	 PackageMap * const I = static_cast<PackageMap *>(End->UserData);
	 if (I->PkgDone == true)
	    continue;
	 if (I->GenPackages(Setup,Stats) == false)
	    _error->DumpErrors();
      }
      
      // Do the generation for Sources
      for (End = List; End->Str != 0; ++End)
      {
	 if (End->Hit == false)
	    continue;
	 
	 PackageMap * const I = static_cast<PackageMap *>(End->UserData);
	 if (I->SrcDone == true)
	    continue;
	 if (I->GenSources(Setup,SrcStats) == false)
	    _error->DumpErrors();
      }
      
      delete [] List;
   }
   return true;
}

                                                                        /*}}}*/
// DoGenerateContents - Helper for Generate to generate the Contents    /*{{{*/
// ---------------------------------------------------------------------
static bool DoGenerateContents(Configuration &Setup,
			       vector<PackageMap> &PkgList,
			       CommandLine &CmdL)
{
   c1out << "Packages done, Starting contents." << endl;

   // Sort the contents file list by date
   string ArchiveDir = Setup.FindDir("Dir::ArchiveDir");
   for (vector<PackageMap>::iterator I = PkgList.begin(); I != PkgList.end(); ++I)
   {
      struct stat A;
      if (MultiCompress::GetStat(flCombine(ArchiveDir,I->Contents),
				 I->CntCompress,A) == false)
	 time(&I->ContentsMTime);
      else
	 I->ContentsMTime = A.st_mtime;
   }
   stable_sort(PkgList.begin(),PkgList.end(),PackageMap::ContentsCompare());
   
   /* Now for Contents.. The process here is to do a make-like dependency
      check. Each contents file is verified to be newer than the package files
      that describe the debs it indexes. Since the package files contain 
      hashes of the .debs this means they have not changed either so the 
      contents must be up to date. */
   unsigned long MaxContentsChange = Setup.FindI("Default::MaxContentsChange",
                                                 std::numeric_limits<unsigned int>::max())*1024;
   for (vector<PackageMap>::iterator I = PkgList.begin(); I != PkgList.end(); ++I)
   {
      // This record is not relevant
      if (I->ContentsDone == true ||
	  I->Contents.empty() == true)
	 continue;

      // Do not do everything if the user specified sections.
      if (CmdL.FileSize() > 2 && I->PkgDone == false)
	 continue;

      struct stat A,B;
      if (MultiCompress::GetStat(flCombine(ArchiveDir,I->Contents),I->CntCompress,A) == true)
      {
	 if (MultiCompress::GetStat(flCombine(ArchiveDir,I->PkgFile),I->PkgCompress,B) == false)
	 {
	    _error->Warning(_("Some files are missing in the package file group `%s'"),I->PkgFile.c_str());
	    continue;
	 }
	 
	 if (A.st_mtime > B.st_mtime)
	    continue;
      }
      
      if (I->GenContents(Setup,PkgList.begin(),PkgList.end(),
			 MaxContentsChange) == false)
	 _error->DumpErrors();
      
      // Hit the limit?
      if (MaxContentsChange == 0)
      {
	 c1out << "Hit contents update byte limit" << endl;
	 break;
      }      
   }

   return true;
}

									/*}}}*/
// Generate - Full generate, using a config file			/*{{{*/
// ---------------------------------------------------------------------
/* */
static bool Generate(CommandLine &CmdL)
{
   struct CacheDB::Stats SrcStats;
   if (CmdL.FileSize() < 2)
      return ShowHelp(CmdL);

   struct timeval StartTime = GetTimevalFromSteadyClock();
   struct CacheDB::Stats Stats;
   
   // Read the configuration file.
   Configuration Setup;
   if (ReadConfigFile(Setup,CmdL.FileList[1],true) == false)
      return false;

   vector<PackageMap> PkgList;
   std::vector<TranslationWriter*> TransList;
   LoadTree(PkgList, TransList, Setup);
   LoadBinDir(PkgList,Setup);

   // Sort by cache DB to improve IO locality.
   stable_sort(PkgList.begin(),PkgList.end(),PackageMap::DBCompare());
   stable_sort(PkgList.begin(),PkgList.end(),PackageMap::SrcDBCompare());

   // Generate packages
   if (_config->FindB("APT::FTPArchive::ContentsOnly", false) == false)
   {
      if(DoGeneratePackagesAndSources(Setup, PkgList, SrcStats, Stats, CmdL) == false)
      {
	 UnloadTree(TransList);
         return false;
      }
   } else {
      c1out << "Skipping Packages/Sources generation" << endl;
   }

   // do Contents if needed
   if (_config->FindB("APT::FTPArchive::Contents", true) == true)
      if (DoGenerateContents(Setup, PkgList, CmdL) == false)
      {
	 UnloadTree(TransList);
	 return false;
      }

   c1out << "Done. " << SizeToStr(Stats.Bytes) << "B in " << Stats.Packages
         << " archives. Took " << TimeToStr(GetTimeDeltaSince(StartTime)) << endl;

   UnloadTree(TransList);
   return true;
}

                                                                        /*}}}*/
// Clean - Clean out the databases					/*{{{*/
// ---------------------------------------------------------------------
/* */
static bool Clean(CommandLine &CmdL)
{
   if (CmdL.FileSize() != 2)
      return ShowHelp(CmdL);

   // Read the configuration file.
   Configuration Setup;
   if (ReadConfigFile(Setup,CmdL.FileList[1],true) == false)
      return false;
   // we don't need translation creation here
   Setup.Set("TreeDefault::Translation", "/dev/null");

   vector<PackageMap> PkgList;
   std::vector<TranslationWriter*> TransList;
   LoadTree(PkgList, TransList, Setup);
   LoadBinDir(PkgList,Setup);

   // Sort by cache DB to improve IO locality.
   stable_sort(PkgList.begin(),PkgList.end(),PackageMap::DBCompare());
   stable_sort(PkgList.begin(),PkgList.end(),PackageMap::SrcDBCompare());

   string CacheDir = Setup.FindDir("Dir::CacheDir");

   for (vector<PackageMap>::iterator I = PkgList.begin(); I != PkgList.end(); )
   {
      if(I->BinCacheDB != "")
         c0out << I->BinCacheDB << endl;
      if(I->SrcCacheDB != "")
         c0out << I->SrcCacheDB << endl;
      CacheDB DB(flCombine(CacheDir,I->BinCacheDB));
      CacheDB DB_SRC(flCombine(CacheDir,I->SrcCacheDB));
      if (DB.Clean() == false)
	 _error->DumpErrors();
      if (DB_SRC.Clean() == false)
	 _error->DumpErrors();

      I = std::find_if(I, PkgList.end(),
	    [&](PackageMap const &PM) { return PM.BinCacheDB != I->BinCacheDB || PM.SrcCacheDB != I->SrcCacheDB;
      });
   }

   return true;
}
									/*}}}*/

static std::vector<aptDispatchWithHelp> GetCommands()			/*{{{*/
{
   return {
      {"packages",&SimpleGenPackages, nullptr},
      {"contents",&SimpleGenContents, nullptr},
      {"sources",&SimpleGenSources, nullptr},
      {"release",&SimpleGenRelease, nullptr},
      {"generate",&Generate, nullptr},
      {"clean",&Clean, nullptr},
      {nullptr, nullptr, nullptr}
   };
}
									/*}}}*/
int main(int argc, const char *argv[])					/*{{{*/
{
   // Parse the command line and initialize the package library
   CommandLine CmdL;
   auto const Cmds = ParseCommandLine(CmdL, APT_CMD::APT_FTPARCHIVE, &_config, NULL, argc, argv, ShowHelp, &GetCommands);

   _config->CndSet("quiet",0);
   Quiet = _config->FindI("quiet",0);
   InitOutput(clog.rdbuf());

   return DispatchCommandLine(CmdL, Cmds);
}
									/*}}}*/