23
23
# This is a command-line application, for use by the administrator.
24
# This program configures, builds and installs IVLE in three separate steps.
24
# This program is a frontend for the modules in the setup packages that
25
# build and install IVLE in separate steps.
25
26
# It is called with at least one argument, which specifies which operation to
28
# setup.py listmake (for developer use only)
29
# Recurses through the source tree and builds a list of all files which should
30
# be copied upon installation. This should be run by the developer before
31
# cutting a distribution, and the listfile it generates should be included in
32
# the distribution, avoiding the administrator having to run it.
34
# setup.py config [args]
35
# Configures IVLE with machine-specific details, most notably, various paths.
36
# Either prompts the administrator for these details or accepts them as
38
# Creates www/conf/conf.py and trampoline/conf.h.
41
# Compiles all files and sets up a jail template in the source directory.
43
# Compiles (GCC) trampoline/trampoline.c to trampoline/trampoline.
45
# Creates standard subdirs inside the jail, eg bin, opt, home, tmp.
46
# Copies console/ to a location within the jail.
47
# Copies OS programs and files to corresponding locations within the jail
48
# (eg. python and Python libs, ld.so, etc).
49
# Generates .pyc files for all the IVLE .py files.
51
# setup.py install [--nojail] [--dry|n]
53
# Create target install directory ($target).
55
# Copy trampoline/trampoline to $target/bin.
56
# chown and chmod the installed trampoline.
57
# Copy www/ to $target.
58
# Copy jail/ to jails template directory (unless --nojail specified).
71
# Import modules from the website is tricky since they're in the www
73
sys.path.append(os.path.join(os.getcwd(), 'www'))
75
import common.makeuser
77
# Determine which Python version (2.4 or 2.5, for example) we are running,
78
# and use that as the filename to the Python directory.
79
# Just get the first 3 characters of sys.version.
80
PYTHON_VERSION = sys.version[0:3]
82
# Operating system files to copy over into the jail.
83
# These will be copied from the given place on the OS file system into the
84
# same place within the jail.
87
'/lib/tls/i686/cmov/libc.so.6',
88
'/lib/tls/i686/cmov/libdl.so.2',
89
'/lib/tls/i686/cmov/libm.so.6',
90
'/lib/tls/i686/cmov/libpthread.so.0',
91
'/lib/tls/i686/cmov/libutil.so.1',
94
# These 2 files do not exist in Ubuntu
95
#'/etc/ld.so.preload',
96
#'/etc/ld.so.nohwcap',
102
'/usr/bin/python%s' % PYTHON_VERSION,
103
# Needed by matplotlib
104
'/usr/lib/i686/cmov/libssl.so.0.9.8',
105
'/usr/lib/i686/cmov/libcrypto.so.0.9.8',
106
'/lib/tls/i686/cmov/libnsl.so.1',
107
'/usr/lib/libz.so.1',
108
'/usr/lib/atlas/liblapack.so.3',
109
'/usr/lib/atlas/libblas.so.3',
110
'/usr/lib/libg2c.so.0',
111
'/usr/lib/libstdc++.so.6',
112
'/usr/lib/libfreetype.so.6',
113
'/usr/lib/libpng12.so.0',
114
'/usr/lib/libBLT.2.4.so.8.4',
115
'/usr/lib/libtk8.4.so.0',
116
'/usr/lib/libtcl8.4.so.0',
117
'/usr/lib/tcl8.4/init.tcl',
118
'/usr/lib/libX11.so.6',
119
'/usr/lib/libXau.so.6',
120
'/usr/lib/libXdmcp.so.6',
121
'/lib/libgcc_s.so.1',
124
# Symlinks to make within the jail. Src mapped to dst.
126
'python%s' % PYTHON_VERSION: 'jail/usr/bin/python',
128
# Trees to copy. Src mapped to dst (these will be passed to action_copytree).
130
'/usr/lib/python%s' % PYTHON_VERSION:
131
'jail/usr/lib/python%s' % PYTHON_VERSION,
132
'/usr/share/matplotlib': 'jail/usr/share/matplotlib',
133
'/etc/ld.so.conf.d': 'jail/etc/ld.so.conf.d',
136
# Try importing existing conf, but if we can't just set up defaults
137
# The reason for this is that these settings are used by other phases
138
# of setup besides conf, so we need to know them.
139
# Also this allows you to hit Return to accept the existing value.
141
confmodule = __import__("www/conf/conf")
143
root_dir = confmodule.root_dir
147
ivle_install_dir = confmodule.ivle_install_dir
149
ivle_install_dir = "/opt/ivle"
151
public_host = confmodule.public_host
153
public_host = "public.localhost"
155
jail_base = confmodule.jail_base
157
jail_base = "/home/informatics/jails"
159
subjects_base = confmodule.subjects_base
161
subjects_base = "/home/informatics/subjects"
163
# Just set reasonable defaults
165
ivle_install_dir = "/opt/ivle"
166
public_host = "public.localhost"
167
jail_base = "/home/informatics/jails"
168
subjects_base = "/home/informatics/subjects"
172
# Try importing install_list, but don't fail if we can't, because listmake can
173
# function without it.
179
# Mime types which will automatically be placed in the list by listmake.
180
# Note that listmake is not intended to be run by the final user (the system
181
# administrator who installs this), so the developers can customize the list
182
# as necessary, and include it in the distribution.
183
listmake_mimetypes = ['text/x-python', 'text/html',
184
'application/x-javascript', 'application/javascript',
185
'text/css', 'image/png', 'application/xml']
187
# Main function skeleton from Guido van Rossum
188
# http://www.artima.com/weblogs/viewpost.jsp?thread=4829
190
33
def main(argv=None):
213
# Disallow run as root unless installing
214
if (operation != 'install' and operation != 'updatejails'
215
and os.geteuid() == 0):
216
print >>sys.stderr, "I do not want to run this stage as root."
217
print >>sys.stderr, "Please run as a normal user."
56
oper_func = call_operator(operation)
57
return oper_func(argv[2:])
61
print """Usage: python setup.py operation [options]
67
For help and options for a specific operation use 'help [operation]'."""
70
oper_func = call_operator(operator)
71
oper_func(['operator','--help'])
73
def call_operator(operation):
219
74
# Call the requested operation's function
225
'listmake' : listmake,
227
'updatejails' : updatejails,
78
'build' : setup.build.build,
79
'install' : setup.install.install,
230
82
print >>sys.stderr, (
231
83
"""Invalid operation '%s'. Try python setup.py help."""
234
return oper_func(argv[2:])
236
# Operation functions
240
print """Usage: python setup.py operation [args]
241
Operation (and args) can be:
243
listmake (developer use only)
246
install [--nojail] [--nosubjects] [-n|--dry]
250
print """Usage: python setup.py help [operation]"""
255
if operation == 'help':
256
print """python setup.py help [operation]
257
Prints the usage message or detailed help on an operation, then exits."""
258
elif operation == 'listmake':
259
print """python setup.py listmake
260
(For developer use only)
261
Recurses through the source tree and builds a list of all files which should
262
be copied upon installation. This should be run by the developer before
263
cutting a distribution, and the listfile it generates should be included in
264
the distribution, avoiding the administrator having to run it."""
265
elif operation == 'config':
266
print """python setup.py config [args]
267
Configures IVLE with machine-specific details, most notably, various paths.
268
Either prompts the administrator for these details or accepts them as
269
command-line args. Will be interactive only if there are no arguments given.
270
Takes defaults from existing conf file if it exists.
272
To run IVLE out of the source directory (allowing development without having
273
to rebuild/install), just provide ivle_install_dir as the IVLE trunk
274
directory, and run build/install one time.
276
Creates www/conf/conf.py and trampoline/conf.h.
285
As explained in the interactive prompt or conf.py.
287
elif operation == 'build':
288
print """python -O setup.py build [--dry|-n]
289
Compiles all files and sets up a jail template in the source directory.
290
-O is recommended to cause compilation to be optimised.
292
Compiles (GCC) trampoline/trampoline.c to trampoline/trampoline.
294
Creates standard subdirs inside the jail, eg bin, opt, home, tmp.
295
Copies console/ to a location within the jail.
296
Copies OS programs and files to corresponding locations within the jail
297
(eg. python and Python libs, ld.so, etc).
298
Generates .pyc or .pyo files for all the IVLE .py files.
300
--dry | -n Print out the actions but don't do anything."""
301
elif operation == 'install':
302
print """sudo python setup.py install [--nojail] [--nosubjects][--dry|-n]
304
Create target install directory ($target).
306
Copy trampoline/trampoline to $target/bin.
307
chown and chmod the installed trampoline.
308
Copy www/ to $target.
309
Copy jail/ to jails template directory (unless --nojail specified).
310
Copy subjects/ to subjects directory (unless --nosubjects specified).
312
--nojail Do not copy the jail.
313
--nosubjects Do not copy the subjects.
314
--dry | -n Print out the actions but don't do anything."""
315
elif operation == 'updatejails':
316
print """sudo python setup.py updatejails [--dry|-n]
318
Copy jail/ to each subdirectory in jails directory.
320
--dry | -n Print out the actions but don't do anything."""
322
print >>sys.stderr, (
323
"""Invalid operation '%s'. Try python setup.py help."""
328
# We build two separate lists, by walking www and console
329
list_www = build_list_py_files('www')
330
list_console = build_list_py_files('console')
331
list_subjects = build_list_py_files('subjects', no_top_level=True)
332
# Make sure that the files generated by conf are in the list
333
# (since listmake is typically run before conf)
334
if "www/conf/conf.py" not in list_www:
335
list_www.append("www/conf/conf.py")
336
# Make sure that console/python-console is in the list
337
if "console/python-console" not in list_console:
338
list_console.append("console/python-console")
339
# Write these out to a file
341
# the files that will be created/overwritten
342
listfile = os.path.join(cwd, "install_list.py")
345
file = open(listfile, "w")
347
file.write("""# IVLE Configuration File
349
# Provides lists of all files to be installed by `setup.py install' from
350
# certain directories.
351
# Note that any files with the given filename plus 'c' or 'o' (that is,
352
# compiled .pyc or .pyo files) will be copied as well.
354
# List of all installable files in www directory.
356
writelist_pretty(file, list_www)
358
# List of all installable files in console directory.
360
writelist_pretty(file, list_console)
362
# List of all installable files in subjects directory.
363
# This is to install sample subjects and material.
365
writelist_pretty(file, list_subjects)
368
except IOError, (errno, strerror):
369
print "IO error(%s): %s" % (errno, strerror)
372
print "Successfully wrote install_list.py"
375
print ("You may modify the set of installable files before cutting the "
382
def build_list_py_files(dir, no_top_level=False):
383
"""Builds a list of all py files found in a directory and its
384
subdirectories. Returns this as a list of strings.
385
no_top_level=True means the file paths will not include the top-level
389
for (dirpath, dirnames, filenames) in os.walk(dir):
390
# Exclude directories beginning with a '.' (such as '.svn')
391
filter_mutate(lambda x: x[0] != '.', dirnames)
392
# All *.py files are added to the list
393
pylist += [os.path.join(dirpath, item) for item in filenames
394
if mimetypes.guess_type(item)[0] in listmake_mimetypes]
396
for i in range(0, len(pylist)):
397
_, pylist[i] = pylist[i].split(os.sep, 1)
400
def writelist_pretty(file, list):
401
"""Writes a list one element per line, to a file."""
407
file.write(' %s,\n' % repr(elem))
411
global root_dir, ivle_install_dir, jail_base, subjects_base
412
global public_host, allowed_uids
413
# Set up some variables
416
# the files that will be created/overwritten
417
conffile = os.path.join(cwd, "www/conf/conf.py")
418
conf_hfile = os.path.join(cwd, "trampoline/conf.h")
420
# Get command-line arguments to avoid asking questions.
422
(opts, args) = getopt.gnu_getopt(args, "", ['root_dir=',
423
'ivle_install_dir=', 'jail_base=', 'allowed_uids='])
426
print >>sys.stderr, "Invalid arguments:", string.join(args, ' ')
430
# Interactive mode. Prompt the user for all the values.
432
print """This tool will create the following files:
435
prompting you for details about your configuration. The file will be
436
overwritten if it already exists. It will *not* install or deploy IVLE.
438
Please hit Ctrl+C now if you do not wish to do this.
439
""" % (conffile, conf_hfile)
441
# Get information from the administrator
442
# If EOF is encountered at any time during the questioning, just exit
445
root_dir = query_user(root_dir,
446
"""Root directory where IVLE is located (in URL space):""")
447
ivle_install_dir = query_user(ivle_install_dir,
448
'Root directory where IVLE will be installed (on the local file '
450
jail_base = query_user(jail_base,
451
"""Root directory where the jails (containing user files) are stored
452
(on the local file system):""")
453
subjects_base = query_user(subjects_base,
454
"""Root directory where the subject directories (containing worksheets
455
and other per-subject files) are stored (on the local file system):""")
456
public_host = query_user(public_host,
457
"""Hostname which will cause the server to go into "public mode",
458
providing login-free access to student's published work:""")
459
allowed_uids = query_user(allowed_uids,
460
"""UID of the web server process which will run IVLE.
461
Only this user may execute the trampoline. May specify multiple users as
462
a comma-separated list.
467
# Non-interactive mode. Parse the options.
468
if '--root_dir' in opts:
469
root_dir = opts['--root_dir']
470
if '--ivle_install_dir' in opts:
471
ivle_install_dir = opts['--ivle_install_dir']
472
if '--jail_base' in opts:
473
jail_base = opts['--jail_base']
474
if '--subjects_base' in opts:
475
jail_base = opts['--subjects_base']
476
if '--public_host' in opts:
477
public_host = opts['--public_host']
478
if '--allowed_uids' in opts:
479
allowed_uids = opts['--allowed_uids']
481
# Error handling on input values
483
allowed_uids = map(int, allowed_uids.split(','))
485
print >>sys.stderr, (
486
"Invalid UID list (%s).\n"
487
"Must be a comma-separated list of integers." % allowed_uids)
490
# Write www/conf/conf.py
493
conf = open(conffile, "w")
495
conf.write("""# IVLE Configuration File
497
# Miscellaneous application settings
500
# In URL space, where in the site is IVLE located. (All URLs will be prefixed
502
# eg. "/" or "/ivle".
505
# In the local file system, where IVLE is actually installed.
506
# This directory should contain the "www" and "bin" directories.
507
ivle_install_dir = "%s"
509
# The server goes into "public mode" if the browser sends a request with this
510
# host. This is for security reasons - we only serve public student files on a
511
# separate domain to the main IVLE site.
512
# Public mode does not use cookies, and serves only public content.
513
# Private mode (normal mode) requires login, and only serves files relevant to
514
# the logged-in user.
517
# In the local file system, where are the student/user file spaces located.
518
# The user jails are expected to be located immediately in subdirectories of
522
# In the local file system, where are the per-subject file spaces located.
523
# The individual subject directories are expected to be located immediately
524
# in subdirectories of this location.
526
""" % (root_dir, ivle_install_dir, public_host, jail_base, subjects_base))
529
except IOError, (errno, strerror):
530
print "IO error(%s): %s" % (errno, strerror)
533
print "Successfully wrote www/conf/conf.py"
535
# Write trampoline/conf.h
538
conf = open(conf_hfile, "w")
540
conf.write("""/* IVLE Configuration File
542
* Administrator settings required by trampoline.
543
* Note: trampoline will have to be rebuilt in order for changes to this file
547
/* In the local file system, where are the jails located.
548
* The trampoline does not allow the creation of a jail anywhere besides
549
* jail_base or a subdirectory of jail_base.
551
static const char* jail_base = "%s";
553
/* Which user IDs are allowed to run the trampoline.
554
* This list should be limited to the web server user.
555
* (Note that root is an implicit member of this list).
557
static const int allowed_uids[] = { %s };
558
""" % (jail_base, repr(allowed_uids)[1:-1]))
561
except IOError, (errno, strerror):
562
print "IO error(%s): %s" % (errno, strerror)
565
print "Successfully wrote trampoline/conf.h"
568
print "You may modify the configuration at any time by editing"
575
# Get "dry" variable from command line
576
(opts, args) = getopt.gnu_getopt(args, "n", ['dry'])
578
dry = '-n' in opts or '--dry' in opts
581
print "Dry run (no actions will be executed\n"
583
# Compile the trampoline
584
action_runprog('gcc', ['-Wall', '-o', 'trampoline/trampoline',
585
'trampoline/trampoline.c'], dry)
587
# Create the jail and its subdirectories
588
# Note: Other subdirs will be made by copying files
589
action_mkdir('jail', dry)
590
action_mkdir('jail/home', dry)
591
action_mkdir('jail/tmp', dry)
593
# Copy all console and operating system files into the jail
594
action_copylist(install_list.list_console, 'jail/opt/ivle', dry)
595
copy_os_files_jail(dry)
596
# Chmod the python console
597
action_chmod_x('jail/opt/ivle/console/python-console', dry)
600
# Compile .py files into .pyc or .pyo files
601
compileall.compile_dir('www', quiet=True)
602
compileall.compile_dir('console', quiet=True)
606
def copy_os_files_jail(dry):
607
"""Copies necessary Operating System files from their usual locations
608
into the jail/ directory of the cwd."""
609
# Currently source paths are configured for Ubuntu.
610
for filename in JAIL_FILES:
611
copy_file_to_jail(filename, dry)
612
for src, dst in JAIL_LINKS.items():
613
action_symlink(src, dst, dry)
614
for src, dst in JAIL_COPYTREES.items():
615
action_copytree(src, dst, dry)
617
def copy_file_to_jail(src, dry):
618
"""Copies a single file from an absolute location into the same location
619
within the jail. src must begin with a '/'. The jail will be located
620
in a 'jail' subdirectory of the current path."""
621
action_copyfile(src, 'jail' + src, dry)
624
# Get "dry" and "nojail" variables from command line
625
(opts, args) = getopt.gnu_getopt(args, "n",
626
['dry', 'nojail', 'nosubjects'])
628
dry = '-n' in opts or '--dry' in opts
629
nojail = '--nojail' in opts
630
nosubjects = '--nosubjects' in opts
633
print "Dry run (no actions will be executed\n"
635
if not dry and os.geteuid() != 0:
636
print >>sys.stderr, "Must be root to run install"
637
print >>sys.stderr, "(I need to chown some files)."
640
# Create the target (install) directory
641
action_mkdir(ivle_install_dir, dry)
643
# Create bin and copy the compiled files there
644
action_mkdir(os.path.join(ivle_install_dir, 'bin'), dry)
645
tramppath = os.path.join(ivle_install_dir, 'bin/trampoline')
646
action_copyfile('trampoline/trampoline', tramppath, dry)
647
# chown trampoline to root and set setuid bit
648
action_chown_setuid(tramppath, dry)
650
# Copy the www directory using the list
651
action_copylist(install_list.list_www, ivle_install_dir, dry)
654
# Copy the local jail directory built by the build action
655
# to the jails template directory (it will be used as a template
656
# for all the students' jails).
657
action_copytree('jail', os.path.join(jail_base, 'template'), dry)
659
# Copy the subjects directory across
660
action_copylist(install_list.list_subjects, subjects_base, dry,
663
# Append IVLE path to ivle.pth in python site packages
664
# (Unless it's already there)
665
ivle_pth = os.path.join(sys.prefix,
666
"lib/python%s/site-packages/ivle.pth" % PYTHON_VERSION)
667
ivle_www = os.path.join(ivle_install_dir, "www")
668
write_ivle_pth = True
670
file = open(ivle_pth, 'r')
672
if line.strip() == ivle_www:
673
write_ivle_pth = False
675
except (IOError, OSError):
678
action_append(ivle_pth, ivle_www)
682
def updatejails(args):
683
# Get "dry" variable from command line
684
(opts, args) = getopt.gnu_getopt(args, "n", ['dry'])
686
dry = '-n' in opts or '--dry' in opts
689
print "Dry run (no actions will be executed\n"
691
if not dry and os.geteuid() != 0:
692
print >>sys.stderr, "Must be root to run install"
693
print >>sys.stderr, "(I need to chown some files)."
696
# Update the template jail directory in case it hasn't been installed
698
action_copytree('jail', os.path.join(jail_base, 'template'), dry)
700
# Re-link all the files in all students jails.
701
for dir in os.listdir(jail_base):
702
if dir == 'template': continue
703
# First back up the student's home directory
704
temp_home = os.tmpnam()
705
action_rename(os.path.join(jail_base, dir, 'home'), temp_home, dry)
706
# Delete the student's jail and relink the jail files
707
action_linktree(os.path.join(jail_base, 'template'),
708
os.path.join(jail_base, dir), dry)
709
# Restore the student's home directory
710
action_rename(temp_home, os.path.join(jail_base, dir, 'home'), dry)
711
# Set up the user's home directory just in case they don't have a
712
# directory for this yet
713
action_mkdir(os.path.join(jail_base, dir, 'home', dir), dry)
717
# The actions call Python os functions but print actions and handle dryness.
718
# May still throw os exceptions if errors occur.
721
"""Represents an error when running a program (nonzero return)."""
722
def __init__(self, prog, retcode):
724
self.retcode = retcode
726
return str(self.prog) + " returned " + repr(self.retcode)
728
def action_runprog(prog, args, dry):
729
"""Runs a unix program. Searches in $PATH. Synchronous (waits for the
730
program to return). Runs in the current environment. First prints the
731
action as a "bash" line.
733
Throws a RunError with a retcode of the return value of the program,
734
if the program did not return 0.
736
prog: String. Name of the program. (No path required, if in $PATH).
737
args: [String]. Arguments to the program.
738
dry: Bool. If True, prints but does not execute.
740
print prog, string.join(args, ' ')
742
ret = os.spawnvp(os.P_WAIT, prog, args)
744
raise RunError(prog, ret)
746
def action_rename(src, dst, dry):
747
"""Calls rename. Deletes the target if it already exists."""
748
if os.access(dst, os.F_OK):
751
shutil.rmtree(dst, True)
752
print "mv ", src, dst
756
except OSError, (err, msg):
757
if err != errno.EEXIST:
760
def action_mkdir(path, dry):
761
"""Calls mkdir. Silently ignored if the directory already exists.
762
Creates all parent directories as necessary."""
763
print "mkdir -p", path
767
except OSError, (err, msg):
768
if err != errno.EEXIST:
771
def action_copytree(src, dst, dry):
772
"""Copies an entire directory tree. Symlinks are seen as normal files and
773
copies of the entire file (not the link) are made. Creates all parent
774
directories as necessary.
776
See shutil.copytree."""
777
if os.access(dst, os.F_OK):
780
shutil.rmtree(dst, True)
781
print "cp -r", src, dst
783
shutil.copytree(src, dst, True)
785
def action_linktree(src, dst, dry):
786
"""Hard-links an entire directory tree. Same as copytree but the created
787
files are hard-links not actual copies. Removes the existing destination.
789
if os.access(dst, os.F_OK):
792
shutil.rmtree(dst, True)
793
print "<cp with hardlinks> -r", src, dst
795
common.makeuser.linktree(src, dst)
797
def action_copylist(srclist, dst, dry, srcdir="."):
798
"""Copies all files in a list to a new location. The files in the list
799
are read relative to the current directory, and their destinations are the
800
same paths relative to dst. Creates all parent directories as necessary.
801
srcdir is "." by default, can be overridden.
803
for srcfile in srclist:
804
dstfile = os.path.join(dst, srcfile)
805
srcfile = os.path.join(srcdir, srcfile)
806
dstdir = os.path.split(dstfile)[0]
807
if not os.path.isdir(dstdir):
808
action_mkdir(dstdir, dry)
809
print "cp -f", srcfile, dstfile
812
shutil.copyfile(srcfile, dstfile)
813
shutil.copymode(srcfile, dstfile)
817
def action_copyfile(src, dst, dry):
818
"""Copies one file to a new location. Creates all parent directories
820
Warn if file not found.
822
dstdir = os.path.split(dst)[0]
823
if not os.path.isdir(dstdir):
824
action_mkdir(dstdir, dry)
825
print "cp -f", src, dst
828
shutil.copyfile(src, dst)
829
shutil.copymode(src, dst)
830
except (shutil.Error, IOError), e:
831
print "Warning: " + str(e)
833
def action_symlink(src, dst, dry):
834
"""Creates a symlink in a given location. Creates all parent directories
837
dstdir = os.path.split(dst)[0]
838
if not os.path.isdir(dstdir):
839
action_mkdir(dstdir, dry)
840
# Delete existing file
841
if os.path.exists(dst):
843
print "ln -fs", src, dst
847
def action_append(ivle_pth, ivle_www):
848
file = open(ivle_pth, 'a+')
849
file.write(ivle_www + '\n')
852
def action_chown_setuid(file, dry):
853
"""Chowns a file to root, and sets the setuid bit on the file.
854
Calling this function requires the euid to be root.
855
The actual mode of path is set to: rws--s--s
857
print "chown root:root", file
860
print "chmod a+xs", file
861
print "chmod u+rw", file
863
os.chmod(file, stat.S_IXUSR | stat.S_IXGRP | stat.S_IXOTH
864
| stat.S_ISUID | stat.S_IRUSR | stat.S_IWUSR)
866
def action_chmod_x(file, dry):
867
"""Chmod +xs a file (sets execute permission)."""
868
print "chmod u+rwx", file
870
os.chmod(file, stat.S_IXUSR | stat.S_IRUSR | stat.S_IWUSR)
872
def query_user(default, prompt):
873
"""Prompts the user for a string, which is read from a line of stdin.
874
Exits silently if EOF is encountered. Returns the string, with spaces
875
removed from the beginning and end.
877
Returns default if a 0-length line (after spaces removed) was read.
879
sys.stdout.write('%s\n (default: "%s")\n>' % (prompt, default))
881
val = sys.stdin.readline()
882
except KeyboardInterrupt:
884
sys.stdout.write("\n")
886
sys.stdout.write("\n")
888
if val == '': sys.exit(1)
889
# If empty line, return default
891
if val == '': return default
894
def filter_mutate(function, list):
895
"""Like built-in filter, but mutates the given list instead of returning a
896
new one. Returns None."""
899
# Delete elements which do not match
900
if not function(list[i]):
904
88
if __name__ == "__main__":
added
removed
setup.py
