-
Notifications
You must be signed in to change notification settings - Fork 5.3k
/
fileutils.rb
1762 lines (1605 loc) · 47.5 KB
/
fileutils.rb
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
#
# = fileutils.rb
#
# Copyright (c) 2000-2007 Minero Aoki
#
# This program is free software.
# You can distribute/modify this program under the same terms of ruby.
#
# == module FileUtils
#
# Namespace for several file utility methods for copying, moving, removing, etc.
#
# === Module Functions
#
# require 'fileutils'
#
# FileUtils.cd(dir, options)
# FileUtils.cd(dir, options) {|dir| .... }
# FileUtils.pwd()
# FileUtils.mkdir(dir, options)
# FileUtils.mkdir(list, options)
# FileUtils.mkdir_p(dir, options)
# FileUtils.mkdir_p(list, options)
# FileUtils.rmdir(dir, options)
# FileUtils.rmdir(list, options)
# FileUtils.ln(old, new, options)
# FileUtils.ln(list, destdir, options)
# FileUtils.ln_s(old, new, options)
# FileUtils.ln_s(list, destdir, options)
# FileUtils.ln_sf(src, dest, options)
# FileUtils.cp(src, dest, options)
# FileUtils.cp(list, dir, options)
# FileUtils.cp_r(src, dest, options)
# FileUtils.cp_r(list, dir, options)
# FileUtils.mv(src, dest, options)
# FileUtils.mv(list, dir, options)
# FileUtils.rm(list, options)
# FileUtils.rm_r(list, options)
# FileUtils.rm_rf(list, options)
# FileUtils.install(src, dest, mode = <src's>, options)
# FileUtils.chmod(mode, list, options)
# FileUtils.chmod_R(mode, list, options)
# FileUtils.chown(user, group, list, options)
# FileUtils.chown_R(user, group, list, options)
# FileUtils.touch(list, options)
#
# The <tt>options</tt> parameter is a hash of options, taken from the list
# <tt>:force</tt>, <tt>:noop</tt>, <tt>:preserve</tt>, and <tt>:verbose</tt>.
# <tt>:noop</tt> means that no changes are made. The other two are obvious.
# Each method documents the options that it honours.
#
# All methods that have the concept of a "source" file or directory can take
# either one file or a list of files in that argument. See the method
# documentation for examples.
#
# There are some `low level' methods, which do not accept any option:
#
# FileUtils.copy_entry(src, dest, preserve = false, dereference = false)
# FileUtils.copy_file(src, dest, preserve = false, dereference = true)
# FileUtils.copy_stream(srcstream, deststream)
# FileUtils.remove_entry(path, force = false)
# FileUtils.remove_entry_secure(path, force = false)
# FileUtils.remove_file(path, force = false)
# FileUtils.compare_file(path_a, path_b)
# FileUtils.compare_stream(stream_a, stream_b)
# FileUtils.uptodate?(file, cmp_list)
#
# == module FileUtils::Verbose
#
# This module has all methods of FileUtils module, but it outputs messages
# before acting. This equates to passing the <tt>:verbose</tt> flag to methods
# in FileUtils.
#
# == module FileUtils::NoWrite
#
# This module has all methods of FileUtils module, but never changes
# files/directories. This equates to passing the <tt>:noop</tt> flag to methods
# in FileUtils.
#
# == module FileUtils::DryRun
#
# This module has all methods of FileUtils module, but never changes
# files/directories. This equates to passing the <tt>:noop</tt> and
# <tt>:verbose</tt> flags to methods in FileUtils.
#
module FileUtils
def self.private_module_function(name) #:nodoc:
module_function name
private_class_method name
end
# This hash table holds command options.
OPT_TABLE = {} #:nodoc: internal use only
#
# Options: (none)
#
# Returns the name of the current directory.
#
def pwd
Dir.pwd
end
module_function :pwd
alias getwd pwd
module_function :getwd
#
# Options: verbose
#
# Changes the current directory to the directory +dir+.
#
# If this method is called with block, resumes to the old
# working directory after the block execution finished.
#
# FileUtils.cd('/', :verbose => true) # chdir and report it
#
# FileUtils.cd('/') do # chdir
# [...] # do something
# end # return to original directory
#
def cd(dir, options = {}, &block) # :yield: dir
fu_check_options options, OPT_TABLE['cd']
fu_output_message "cd #{dir}" if options[:verbose]
Dir.chdir(dir, &block)
fu_output_message 'cd -' if options[:verbose] and block
end
module_function :cd
alias chdir cd
module_function :chdir
OPT_TABLE['cd'] =
OPT_TABLE['chdir'] = [:verbose]
#
# Options: (none)
#
# Returns true if +new+ is newer than all +old_list+.
# Non-existent files are older than any file.
#
# FileUtils.uptodate?('hello.o', %w(hello.c hello.h)) or \
# system 'make hello.o'
#
def uptodate?(new, old_list)
return false unless File.exist?(new)
new_time = File.mtime(new)
old_list.each do |old|
if File.exist?(old)
return false unless new_time > File.mtime(old)
end
end
true
end
module_function :uptodate?
def remove_tailing_slash(dir)
dir == '/' ? dir : dir.chomp(?/)
end
private_module_function :remove_tailing_slash
#
# Options: mode noop verbose
#
# Creates one or more directories.
#
# FileUtils.mkdir 'test'
# FileUtils.mkdir %w( tmp data )
# FileUtils.mkdir 'notexist', :noop => true # Does not really create.
# FileUtils.mkdir 'tmp', :mode => 0700
#
def mkdir(list, options = {})
fu_check_options options, OPT_TABLE['mkdir']
list = fu_list(list)
fu_output_message "mkdir #{options[:mode] ? ('-m %03o ' % options[:mode]) : ''}#{list.join ' '}" if options[:verbose]
return if options[:noop]
list.each do |dir|
fu_mkdir dir, options[:mode]
end
end
module_function :mkdir
OPT_TABLE['mkdir'] = [:mode, :noop, :verbose]
#
# Options: mode noop verbose
#
# Creates a directory and all its parent directories.
# For example,
#
# FileUtils.mkdir_p '/usr/local/lib/ruby'
#
# causes to make following directories, if it does not exist.
# * /usr
# * /usr/local
# * /usr/local/lib
# * /usr/local/lib/ruby
#
# You can pass several directories at a time in a list.
#
def mkdir_p(list, options = {})
fu_check_options options, OPT_TABLE['mkdir_p']
list = fu_list(list)
fu_output_message "mkdir -p #{options[:mode] ? ('-m %03o ' % options[:mode]) : ''}#{list.join ' '}" if options[:verbose]
return *list if options[:noop]
list.map {|path| remove_tailing_slash(path)}.each do |path|
# optimize for the most common case
begin
fu_mkdir path, options[:mode]
next
rescue SystemCallError
next if File.directory?(path)
end
stack = []
until path == stack.last # dirname("/")=="/", dirname("C:/")=="C:/"
stack.push path
path = File.dirname(path)
end
stack.pop # root directory should exist
stack.reverse_each do |dir|
begin
fu_mkdir dir, options[:mode]
rescue SystemCallError
raise unless File.directory?(dir)
end
end
end
return *list
end
module_function :mkdir_p
alias mkpath mkdir_p
alias makedirs mkdir_p
module_function :mkpath
module_function :makedirs
OPT_TABLE['mkdir_p'] =
OPT_TABLE['mkpath'] =
OPT_TABLE['makedirs'] = [:mode, :noop, :verbose]
def fu_mkdir(path, mode) #:nodoc:
path = remove_tailing_slash(path)
if mode
Dir.mkdir path, mode
File.chmod mode, path
else
Dir.mkdir path
end
end
private_module_function :fu_mkdir
#
# Options: parents, noop, verbose
#
# Removes one or more directories.
#
# FileUtils.rmdir 'somedir'
# FileUtils.rmdir %w(somedir anydir otherdir)
# # Does not really remove directory; outputs message.
# FileUtils.rmdir 'somedir', :verbose => true, :noop => true
#
def rmdir(list, options = {})
fu_check_options options, OPT_TABLE['rmdir']
list = fu_list(list)
parents = options[:parents]
fu_output_message "rmdir #{parents ? '-p ' : ''}#{list.join ' '}" if options[:verbose]
return if options[:noop]
list.each do |dir|
begin
Dir.rmdir(dir = remove_tailing_slash(dir))
if parents
until (parent = File.dirname(dir)) == '.' or parent == dir
dir = parent
Dir.rmdir(dir)
end
end
rescue Errno::ENOTEMPTY, Errno::EEXIST, Errno::ENOENT
end
end
end
module_function :rmdir
OPT_TABLE['rmdir'] = [:parents, :noop, :verbose]
#
# Options: force noop verbose
#
# <b><tt>ln(old, new, options = {})</tt></b>
#
# Creates a hard link +new+ which points to +old+.
# If +new+ already exists and it is a directory, creates a link +new/old+.
# If +new+ already exists and it is not a directory, raises Errno::EEXIST.
# But if :force option is set, overwrite +new+.
#
# FileUtils.ln 'gcc', 'cc', :verbose => true
# FileUtils.ln '/usr/bin/emacs21', '/usr/bin/emacs'
#
# <b><tt>ln(list, destdir, options = {})</tt></b>
#
# Creates several hard links in a directory, with each one pointing to the
# item in +list+. If +destdir+ is not a directory, raises Errno::ENOTDIR.
#
# include FileUtils
# cd '/sbin'
# FileUtils.ln %w(cp mv mkdir), '/bin' # Now /sbin/cp and /bin/cp are linked.
#
def ln(src, dest, options = {})
fu_check_options options, OPT_TABLE['ln']
fu_output_message "ln#{options[:force] ? ' -f' : ''} #{[src,dest].flatten.join ' '}" if options[:verbose]
return if options[:noop]
fu_each_src_dest0(src, dest) do |s,d|
remove_file d, true if options[:force]
File.link s, d
end
end
module_function :ln
alias link ln
module_function :link
OPT_TABLE['ln'] =
OPT_TABLE['link'] = [:force, :noop, :verbose]
#
# Options: force noop verbose
#
# <b><tt>ln_s(old, new, options = {})</tt></b>
#
# Creates a symbolic link +new+ which points to +old+. If +new+ already
# exists and it is a directory, creates a symbolic link +new/old+. If +new+
# already exists and it is not a directory, raises Errno::EEXIST. But if
# :force option is set, overwrite +new+.
#
# FileUtils.ln_s '/usr/bin/ruby', '/usr/local/bin/ruby'
# FileUtils.ln_s 'verylongsourcefilename.c', 'c', :force => true
#
# <b><tt>ln_s(list, destdir, options = {})</tt></b>
#
# Creates several symbolic links in a directory, with each one pointing to the
# item in +list+. If +destdir+ is not a directory, raises Errno::ENOTDIR.
#
# If +destdir+ is not a directory, raises Errno::ENOTDIR.
#
# FileUtils.ln_s Dir.glob('bin/*.rb'), '/home/aamine/bin'
#
def ln_s(src, dest, options = {})
fu_check_options options, OPT_TABLE['ln_s']
fu_output_message "ln -s#{options[:force] ? 'f' : ''} #{[src,dest].flatten.join ' '}" if options[:verbose]
return if options[:noop]
fu_each_src_dest0(src, dest) do |s,d|
remove_file d, true if options[:force]
File.symlink s, d
end
end
module_function :ln_s
alias symlink ln_s
module_function :symlink
OPT_TABLE['ln_s'] =
OPT_TABLE['symlink'] = [:force, :noop, :verbose]
#
# Options: noop verbose
#
# Same as
# #ln_s(src, dest, :force => true)
#
def ln_sf(src, dest, options = {})
fu_check_options options, OPT_TABLE['ln_sf']
options = options.dup
options[:force] = true
ln_s src, dest, options
end
module_function :ln_sf
OPT_TABLE['ln_sf'] = [:noop, :verbose]
#
# Options: preserve noop verbose
#
# Copies a file content +src+ to +dest+. If +dest+ is a directory,
# copies +src+ to +dest/src+.
#
# If +src+ is a list of files, then +dest+ must be a directory.
#
# FileUtils.cp 'eval.c', 'eval.c.org'
# FileUtils.cp %w(cgi.rb complex.rb date.rb), '/usr/lib/ruby/1.6'
# FileUtils.cp %w(cgi.rb complex.rb date.rb), '/usr/lib/ruby/1.6', :verbose => true
# FileUtils.cp 'symlink', 'dest' # copy content, "dest" is not a symlink
#
def cp(src, dest, options = {})
fu_check_options options, OPT_TABLE['cp']
fu_output_message "cp#{options[:preserve] ? ' -p' : ''} #{[src,dest].flatten.join ' '}" if options[:verbose]
return if options[:noop]
fu_each_src_dest(src, dest) do |s, d|
copy_file s, d, options[:preserve]
end
end
module_function :cp
alias copy cp
module_function :copy
OPT_TABLE['cp'] =
OPT_TABLE['copy'] = [:preserve, :noop, :verbose]
#
# Options: preserve noop verbose dereference_root remove_destination
#
# Copies +src+ to +dest+. If +src+ is a directory, this method copies
# all its contents recursively. If +dest+ is a directory, copies
# +src+ to +dest/src+.
#
# +src+ can be a list of files.
#
# # Installing Ruby library "mylib" under the site_ruby
# FileUtils.rm_r site_ruby + '/mylib', :force
# FileUtils.cp_r 'lib/', site_ruby + '/mylib'
#
# # Examples of copying several files to target directory.
# FileUtils.cp_r %w(mail.rb field.rb debug/), site_ruby + '/tmail'
# FileUtils.cp_r Dir.glob('*.rb'), '/home/aamine/lib/ruby', :noop => true, :verbose => true
#
# # If you want to copy all contents of a directory instead of the
# # directory itself, c.f. src/x -> dest/x, src/y -> dest/y,
# # use following code.
# FileUtils.cp_r 'src/.', 'dest' # cp_r('src', 'dest') makes dest/src,
# # but this doesn't.
#
def cp_r(src, dest, options = {})
fu_check_options options, OPT_TABLE['cp_r']
fu_output_message "cp -r#{options[:preserve] ? 'p' : ''}#{options[:remove_destination] ? ' --remove-destination' : ''} #{[src,dest].flatten.join ' '}" if options[:verbose]
return if options[:noop]
options = options.dup
options[:dereference_root] = true unless options.key?(:dereference_root)
fu_each_src_dest(src, dest) do |s, d|
copy_entry s, d, options[:preserve], options[:dereference_root], options[:remove_destination]
end
end
module_function :cp_r
OPT_TABLE['cp_r'] = [:preserve, :noop, :verbose,
:dereference_root, :remove_destination]
#
# Copies a file system entry +src+ to +dest+.
# If +src+ is a directory, this method copies its contents recursively.
# This method preserves file types, c.f. symlink, directory...
# (FIFO, device files and etc. are not supported yet)
#
# Both of +src+ and +dest+ must be a path name.
# +src+ must exist, +dest+ must not exist.
#
# If +preserve+ is true, this method preserves owner, group, and
# modified time. Permissions are copied regardless +preserve+.
#
# If +dereference_root+ is true, this method dereference tree root.
#
# If +remove_destination+ is true, this method removes each destination file before copy.
#
def copy_entry(src, dest, preserve = false, dereference_root = false, remove_destination = false)
Entry_.new(src, nil, dereference_root).wrap_traverse(proc do |ent|
destent = Entry_.new(dest, ent.rel, false)
File.unlink destent.path if remove_destination && File.file?(destent.path)
ent.copy destent.path
end, proc do |ent|
destent = Entry_.new(dest, ent.rel, false)
ent.copy_metadata destent.path if preserve
end)
end
module_function :copy_entry
#
# Copies file contents of +src+ to +dest+.
# Both of +src+ and +dest+ must be a path name.
#
def copy_file(src, dest, preserve = false, dereference = true)
ent = Entry_.new(src, nil, dereference)
ent.copy_file dest
ent.copy_metadata dest if preserve
end
module_function :copy_file
#
# Copies stream +src+ to +dest+.
# +src+ must respond to #read(n) and
# +dest+ must respond to #write(str).
#
def copy_stream(src, dest)
IO.copy_stream(src, dest)
end
module_function :copy_stream
#
# Options: force noop verbose
#
# Moves file(s) +src+ to +dest+. If +file+ and +dest+ exist on the different
# disk partition, the file is copied then the original file is removed.
#
# FileUtils.mv 'badname.rb', 'goodname.rb'
# FileUtils.mv 'stuff.rb', '/notexist/lib/ruby', :force => true # no error
#
# FileUtils.mv %w(junk.txt dust.txt), '/home/aamine/.trash/'
# FileUtils.mv Dir.glob('test*.rb'), 'test', :noop => true, :verbose => true
#
def mv(src, dest, options = {})
fu_check_options options, OPT_TABLE['mv']
fu_output_message "mv#{options[:force] ? ' -f' : ''} #{[src,dest].flatten.join ' '}" if options[:verbose]
return if options[:noop]
fu_each_src_dest(src, dest) do |s, d|
destent = Entry_.new(d, nil, true)
begin
if destent.exist?
if destent.directory?
raise Errno::EEXIST, d
else
destent.remove_file if rename_cannot_overwrite_file?
end
end
begin
File.rename s, d
rescue Errno::EXDEV
copy_entry s, d, true
if options[:secure]
remove_entry_secure s, options[:force]
else
remove_entry s, options[:force]
end
end
rescue SystemCallError
raise unless options[:force]
end
end
end
module_function :mv
alias move mv
module_function :move
OPT_TABLE['mv'] =
OPT_TABLE['move'] = [:force, :noop, :verbose, :secure]
def rename_cannot_overwrite_file? #:nodoc:
/cygwin|mswin|mingw|bccwin|emx/ =~ RUBY_PLATFORM
end
private_module_function :rename_cannot_overwrite_file?
#
# Options: force noop verbose
#
# Remove file(s) specified in +list+. This method cannot remove directories.
# All StandardErrors are ignored when the :force option is set.
#
# FileUtils.rm %w( junk.txt dust.txt )
# FileUtils.rm Dir.glob('*.so')
# FileUtils.rm 'NotExistFile', :force => true # never raises exception
#
def rm(list, options = {})
fu_check_options options, OPT_TABLE['rm']
list = fu_list(list)
fu_output_message "rm#{options[:force] ? ' -f' : ''} #{list.join ' '}" if options[:verbose]
return if options[:noop]
list.each do |path|
remove_file path, options[:force]
end
end
module_function :rm
alias remove rm
module_function :remove
OPT_TABLE['rm'] =
OPT_TABLE['remove'] = [:force, :noop, :verbose]
#
# Options: noop verbose
#
# Equivalent to
#
# #rm(list, :force => true)
#
def rm_f(list, options = {})
fu_check_options options, OPT_TABLE['rm_f']
options = options.dup
options[:force] = true
rm list, options
end
module_function :rm_f
alias safe_unlink rm_f
module_function :safe_unlink
OPT_TABLE['rm_f'] =
OPT_TABLE['safe_unlink'] = [:noop, :verbose]
#
# Options: force noop verbose secure
#
# remove files +list+[0] +list+[1]... If +list+[n] is a directory,
# removes its all contents recursively. This method ignores
# StandardError when :force option is set.
#
# FileUtils.rm_r Dir.glob('/tmp/*')
# FileUtils.rm_r '/', :force => true # :-)
#
# WARNING: This method causes local vulnerability
# if one of parent directories or removing directory tree are world
# writable (including /tmp, whose permission is 1777), and the current
# process has strong privilege such as Unix super user (root), and the
# system has symbolic link. For secure removing, read the documentation
# of #remove_entry_secure carefully, and set :secure option to true.
# Default is :secure=>false.
#
# NOTE: This method calls #remove_entry_secure if :secure option is set.
# See also #remove_entry_secure.
#
def rm_r(list, options = {})
fu_check_options options, OPT_TABLE['rm_r']
# options[:secure] = true unless options.key?(:secure)
list = fu_list(list)
fu_output_message "rm -r#{options[:force] ? 'f' : ''} #{list.join ' '}" if options[:verbose]
return if options[:noop]
list.each do |path|
if options[:secure]
remove_entry_secure path, options[:force]
else
remove_entry path, options[:force]
end
end
end
module_function :rm_r
OPT_TABLE['rm_r'] = [:force, :noop, :verbose, :secure]
#
# Options: noop verbose secure
#
# Equivalent to
#
# #rm_r(list, :force => true)
#
# WARNING: This method causes local vulnerability.
# Read the documentation of #rm_r first.
#
def rm_rf(list, options = {})
fu_check_options options, OPT_TABLE['rm_rf']
options = options.dup
options[:force] = true
rm_r list, options
end
module_function :rm_rf
alias rmtree rm_rf
module_function :rmtree
OPT_TABLE['rm_rf'] =
OPT_TABLE['rmtree'] = [:noop, :verbose, :secure]
#
# This method removes a file system entry +path+. +path+ shall be a
# regular file, a directory, or something. If +path+ is a directory,
# remove it recursively. This method is required to avoid TOCTTOU
# (time-of-check-to-time-of-use) local security vulnerability of #rm_r.
# #rm_r causes security hole when:
#
# * Parent directory is world writable (including /tmp).
# * Removing directory tree includes world writable directory.
# * The system has symbolic link.
#
# To avoid this security hole, this method applies special preprocess.
# If +path+ is a directory, this method chown(2) and chmod(2) all
# removing directories. This requires the current process is the
# owner of the removing whole directory tree, or is the super user (root).
#
# WARNING: You must ensure that *ALL* parent directories cannot be
# moved by other untrusted users. For example, parent directories
# should not be owned by untrusted users, and should not be world
# writable except when the sticky bit set.
#
# WARNING: Only the owner of the removing directory tree, or Unix super
# user (root) should invoke this method. Otherwise this method does not
# work.
#
# For details of this security vulnerability, see Perl's case:
#
# http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0448
# http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0452
#
# For fileutils.rb, this vulnerability is reported in [ruby-dev:26100].
#
def remove_entry_secure(path, force = false)
unless fu_have_symlink?
remove_entry path, force
return
end
fullpath = File.expand_path(path)
st = File.lstat(fullpath)
unless st.directory?
File.unlink fullpath
return
end
# is a directory.
parent_st = File.stat(File.dirname(fullpath))
unless parent_st.world_writable?
remove_entry path, force
return
end
unless parent_st.sticky?
raise ArgumentError, "parent directory is world writable, FileUtils#remove_entry_secure does not work; abort: #{path.inspect} (parent directory mode #{'%o' % parent_st.mode})"
end
# freeze tree root
euid = Process.euid
File.open(fullpath + '/.') {|f|
unless fu_stat_identical_entry?(st, f.stat)
# symlink (TOC-to-TOU attack?)
File.unlink fullpath
return
end
f.chown euid, -1
f.chmod 0700
unless fu_stat_identical_entry?(st, File.lstat(fullpath))
# TOC-to-TOU attack?
File.unlink fullpath
return
end
}
# ---- tree root is frozen ----
root = Entry_.new(path)
root.preorder_traverse do |ent|
if ent.directory?
ent.chown euid, -1
ent.chmod 0700
end
end
root.postorder_traverse do |ent|
begin
ent.remove
rescue
raise unless force
end
end
rescue
raise unless force
end
module_function :remove_entry_secure
def fu_have_symlink? #:nodoc:
File.symlink nil, nil
rescue NotImplementedError
return false
rescue TypeError
return true
end
private_module_function :fu_have_symlink?
def fu_stat_identical_entry?(a, b) #:nodoc:
a.dev == b.dev and a.ino == b.ino
end
private_module_function :fu_stat_identical_entry?
#
# This method removes a file system entry +path+.
# +path+ might be a regular file, a directory, or something.
# If +path+ is a directory, remove it recursively.
#
# See also #remove_entry_secure.
#
def remove_entry(path, force = false)
Entry_.new(path).postorder_traverse do |ent|
begin
ent.remove
rescue
raise unless force
end
end
rescue
raise unless force
end
module_function :remove_entry
#
# Removes a file +path+.
# This method ignores StandardError if +force+ is true.
#
def remove_file(path, force = false)
Entry_.new(path).remove_file
rescue
raise unless force
end
module_function :remove_file
#
# Removes a directory +dir+ and its contents recursively.
# This method ignores StandardError if +force+ is true.
#
def remove_dir(path, force = false)
remove_entry path, force # FIXME?? check if it is a directory
end
module_function :remove_dir
#
# Returns true if the contents of a file A and a file B are identical.
#
# FileUtils.compare_file('somefile', 'somefile') #=> true
# FileUtils.compare_file('/bin/cp', '/bin/mv') #=> maybe false
#
def compare_file(a, b)
return false unless File.size(a) == File.size(b)
File.open(a, 'rb') {|fa|
File.open(b, 'rb') {|fb|
return compare_stream(fa, fb)
}
}
end
module_function :compare_file
alias identical? compare_file
alias cmp compare_file
module_function :identical?
module_function :cmp
#
# Returns true if the contents of a stream +a+ and +b+ are identical.
#
def compare_stream(a, b)
bsize = fu_stream_blksize(a, b)
sa = ""
sb = ""
begin
a.read(bsize, sa)
b.read(bsize, sb)
return true if sa.empty? && sb.empty?
end while sa == sb
false
end
module_function :compare_stream
#
# Options: mode preserve noop verbose
#
# If +src+ is not same as +dest+, copies it and changes the permission
# mode to +mode+. If +dest+ is a directory, destination is +dest+/+src+.
# This method removes destination before copy.
#
# FileUtils.install 'ruby', '/usr/local/bin/ruby', :mode => 0755, :verbose => true
# FileUtils.install 'lib.rb', '/usr/local/lib/ruby/site_ruby', :verbose => true
#
def install(src, dest, options = {})
fu_check_options options, OPT_TABLE['install']
fu_output_message "install -c#{options[:preserve] && ' -p'}#{options[:mode] ? (' -m 0%o' % options[:mode]) : ''} #{[src,dest].flatten.join ' '}" if options[:verbose]
return if options[:noop]
fu_each_src_dest(src, dest) do |s, d|
st = File.stat(s)
unless File.exist?(d) and compare_file(s, d)
remove_file d, true
copy_file s, d
File.utime st.atime, st.mtime, d if options[:preserve]
File.chmod options[:mode], d if options[:mode]
end
end
end
module_function :install
OPT_TABLE['install'] = [:mode, :preserve, :noop, :verbose]
def user_mask(target) #:nodoc:
target.each_char.inject(0) do |mask, chr|
case chr
when "u"
mask | 04700
when "g"
mask | 02070
when "o"
mask | 01007
when "a"
mask | 07777
else
raise ArgumentError, "invalid `who' symbol in file mode: #{chr}"
end
end
end
private_module_function :user_mask
def apply_mask(mode, user_mask, op, mode_mask)
case op
when '='
(mode & ~user_mask) | (user_mask & mode_mask)
when '+'
mode | (user_mask & mode_mask)
when '-'
mode & ~(user_mask & mode_mask)
end
end
private_module_function :apply_mask
def symbolic_modes_to_i(mode_sym, path) #:nodoc:
mode_sym.split(/,/).inject(File.stat(path).mode & 07777) do |current_mode, clause|
target, *actions = clause.split(/([=+-])/)
raise ArgumentError, "invalid file mode: #{mode_sym}" if actions.empty?
target = 'a' if target.empty?
user_mask = user_mask(target)
actions.each_slice(2) do |op, perm|
need_apply = op == '='
mode_mask = (perm || '').each_char.inject(0) do |mask, chr|
case chr
when "r"
mask | 0444
when "w"
mask | 0222
when "x"
mask | 0111
when "X"
if FileTest.directory? path
mask | 0111
else
mask
end
when "s"
mask | 06000
when "t"
mask | 01000
when "u", "g", "o"
if mask.nonzero?
current_mode = apply_mask(current_mode, user_mask, op, mask)
end
need_apply = false
copy_mask = user_mask(chr)
(current_mode & copy_mask) / (copy_mask & 0111) * (user_mask & 0111)
else
raise ArgumentError, "invalid `perm' symbol in file mode: #{chr}"
end
end
if mode_mask.nonzero? || need_apply
current_mode = apply_mask(current_mode, user_mask, op, mode_mask)
end
end
current_mode
end
end
private_module_function :symbolic_modes_to_i
def fu_mode(mode, path) #:nodoc:
mode.is_a?(String) ? symbolic_modes_to_i(mode, path) : mode
end
private_module_function :fu_mode
def mode_to_s(mode) #:nodoc:
mode.is_a?(String) ? mode : "%o" % mode
end
private_module_function :mode_to_s
#
# Options: noop verbose
#
# Changes permission bits on the named files (in +list+) to the bit pattern
# represented by +mode+.
#
# +mode+ is the symbolic and absolute mode can be used.
#
# Absolute mode is
# FileUtils.chmod 0755, 'somecommand'
# FileUtils.chmod 0644, %w(my.rb your.rb his.rb her.rb)
# FileUtils.chmod 0755, '/usr/bin/ruby', :verbose => true
#
# Symbolic mode is
# FileUtils.chmod "u=wrx,go=rx", 'somecommand'
# FileUtils.chmod "u=wr,go=rr", %w(my.rb your.rb his.rb her.rb)
# FileUtils.chmod "u=wrx,go=rx", '/usr/bin/ruby', :verbose => true
#
# "a" :: is user, group, other mask.
# "u" :: is user's mask.
# "g" :: is group's mask.
# "o" :: is other's mask.
# "w" :: is write permission.
# "r" :: is read permission.
# "x" :: is execute permission.
# "X" ::
# is execute permission for directories only, must be used in conjunction with "+"
# "s" :: is uid, gid.
# "t" :: is sticky bit.
# "+" :: is added to a class given the specified mode.
# "-" :: Is removed from a given class given mode.
# "=" :: Is the exact nature of the class will be given a specified mode.
def chmod(mode, list, options = {})
fu_check_options options, OPT_TABLE['chmod']
list = fu_list(list)
fu_output_message sprintf('chmod %s %s', mode_to_s(mode), list.join(' ')) if options[:verbose]
return if options[:noop]
list.each do |path|
Entry_.new(path).chmod(fu_mode(mode, path))