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# IVLE - Informatics Virtual Learning Environment
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# Copyright (C) 2007-2008 The University of Melbourne
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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# This is a command-line application, for use by the administrator.
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# This program configures, builds and installs IVLE in three separate steps.
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# It is called with at least one argument, which specifies which operation to
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# setup.py listmake (for developer use only)
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# Recurses through the source tree and builds a list of all files which should
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# be copied upon installation. This should be run by the developer before
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# cutting a distribution, and the listfile it generates should be included in
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# the distribution, avoiding the administrator having to run it.
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# setup.py conf [args]
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# Configures IVLE with machine-specific details, most notably, various paths.
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# Either prompts the administrator for these details or accepts them as
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# Creates www/conf/conf.py and trampoline/conf.h.
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# Compiles all files and sets up a jail template in the source directory.
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# Compiles (GCC) trampoline/trampoline.c to trampoline/trampoline.
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# Creates standard subdirs inside the jail, eg bin, opt, home, tmp.
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# Copies console/ to a location within the jail.
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# Copies OS programs and files to corresponding locations within the jail
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# (eg. python and Python libs, ld.so, etc).
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# Generates .pyc files for all the IVLE .py files.
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# setup.py install [--nojail] [--dry|n]
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# Create target install directory ($target).
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# Copy trampoline/trampoline to $target/bin.
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# chown and chmod the installed trampoline.
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# Copy www/ to $target.
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# Copy jail/ to jails template directory (unless --nojail specified).
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# Import modules from the website is tricky since they're in the www
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sys.path.append(os.path.join(os.getcwd(), 'www'))
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import common.makeuser
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# Operating system files to copy over into the jail.
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# These will be copied from the given place on the OS file system into the
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# same place within the jail.
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'/lib/tls/i686/cmov/libc.so.6',
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'/lib/tls/i686/cmov/libdl.so.2',
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'/lib/tls/i686/cmov/libm.so.6',
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'/lib/tls/i686/cmov/libpthread.so.0',
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'/lib/tls/i686/cmov/libutil.so.1',
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# These 2 files do not exist in Ubuntu
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#'/etc/ld.so.preload',
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#'/etc/ld.so.nohwcap',
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# Needed by matplotlib
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'/usr/lib/i686/cmov/libssl.so.0.9.8',
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'/usr/lib/i686/cmov/libcrypto.so.0.9.8',
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'/lib/tls/i686/cmov/libnsl.so.1',
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'/usr/lib/libz.so.1',
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'/usr/lib/atlas/liblapack.so.3',
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'/usr/lib/atlas/libblas.so.3',
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'/usr/lib/libg2c.so.0',
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'/usr/lib/libstdc++.so.6',
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'/usr/lib/libfreetype.so.6',
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'/usr/lib/libpng12.so.0',
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'/usr/lib/libBLT.2.4.so.8.4',
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'/usr/lib/libtk8.4.so.0',
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'/usr/lib/libtcl8.4.so.0',
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'/usr/lib/tcl8.4/init.tcl',
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'/usr/lib/libX11.so.6',
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'/usr/lib/libXau.so.6',
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'/usr/lib/libXdmcp.so.6',
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'/lib/libgcc_s.so.1',
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# Symlinks to make within the jail. Src mapped to dst.
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'python2.5': 'jail/usr/bin/python',
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# Trees to copy. Src mapped to dst (these will be passed to action_copytree).
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'/usr/lib/python2.5': 'jail/usr/lib/python2.5',
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'/usr/share/matplotlib': 'jail/usr/share/matplotlib',
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'/etc/ld.so.conf.d': 'jail/etc/ld.so.conf.d',
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# Try importing existing conf, but if we can't just set up defaults
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# The reason for this is that these settings are used by other phases
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# of setup besides conf, so we need to know them.
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# Also this allows you to hit Return to accept the existing value.
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confmodule = __import__("www/conf/conf")
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root_dir = confmodule.root_dir
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ivle_install_dir = confmodule.ivle_install_dir
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ivle_install_dir = "/opt/ivle"
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public_host = confmodule.public_host
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public_host = "public.localhost"
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jail_base = confmodule.jail_base
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jail_base = "/home/informatics/jails"
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# Just set reasonable defaults
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ivle_install_dir = "/opt/ivle"
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public_host = "public.localhost"
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jail_base = "/home/informatics/jails"
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# Try importing install_list, but don't fail if we can't, because listmake can
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# function without it.
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# Mime types which will automatically be placed in the list by listmake.
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# Note that listmake is not intended to be run by the final user (the system
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# administrator who installs this), so the developers can customize the list
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# as necessary, and include it in the distribution.
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listmake_mimetypes = ['text/x-python', 'text/html',
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'application/x-javascript', 'application/javascript',
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'text/css', 'image/png']
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# Main function skeleton from Guido van Rossum
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# http://www.artima.com/weblogs/viewpost.jsp?thread=4829
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# Print the opening spiel including the GPL notice
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print """IVLE - Informatics Virtual Learning Environment Setup
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Copyright (C) 2007-2008 The University of Melbourne
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IVLE comes with ABSOLUTELY NO WARRANTY.
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This is free software, and you are welcome to redistribute it
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under certain conditions. See LICENSE.txt for details.
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# First argument is the name of the setup operation
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# Print usage message and exit
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# Disallow run as root unless installing
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if (operation != 'install' and operation != 'updatejails'
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and os.geteuid() == 0):
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print >>sys.stderr, "I do not want to run this stage as root."
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print >>sys.stderr, "Please run as a normal user."
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# Call the requested operation's function
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'listmake' : listmake,
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'updatejails' : updatejails,
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print >>sys.stderr, (
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"""Invalid operation '%s'. Try python setup.py help."""
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return oper_func(argv[2:])
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# Operation functions
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print """Usage: python setup.py operation [args]
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Operation (and args) can be:
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listmake (developer use only)
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install [--nojail] [-n|--dry]
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print """Usage: python setup.py help [operation]"""
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if operation == 'help':
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print """python setup.py help [operation]
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Prints the usage message or detailed help on an operation, then exits."""
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elif operation == 'listmake':
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print """python setup.py listmake
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(For developer use only)
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Recurses through the source tree and builds a list of all files which should
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be copied upon installation. This should be run by the developer before
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cutting a distribution, and the listfile it generates should be included in
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the distribution, avoiding the administrator having to run it."""
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elif operation == 'conf':
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print """python setup.py conf [args]
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Configures IVLE with machine-specific details, most notably, various paths.
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Either prompts the administrator for these details or accepts them as
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command-line args. Will be interactive only if there are no arguments given.
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Takes defaults from existing conf file if it exists.
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To run IVLE out of the source directory (allowing development without having
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to rebuild/install), just provide ivle_install_dir as the IVLE trunk
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directory, and run build/install one time.
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Creates www/conf/conf.py and trampoline/conf.h.
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As explained in the interactive prompt or conf.py.
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elif operation == 'build':
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print """python -O setup.py build [--dry|-n]
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Compiles all files and sets up a jail template in the source directory.
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-O is recommended to cause compilation to be optimised.
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Compiles (GCC) trampoline/trampoline.c to trampoline/trampoline.
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Creates standard subdirs inside the jail, eg bin, opt, home, tmp.
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Copies console/ to a location within the jail.
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Copies OS programs and files to corresponding locations within the jail
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(eg. python and Python libs, ld.so, etc).
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Generates .pyc or .pyo files for all the IVLE .py files.
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--dry | -n Print out the actions but don't do anything."""
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elif operation == 'install':
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print """sudo python setup.py install [--nojail] [--dry|-n]
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Create target install directory ($target).
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Copy trampoline/trampoline to $target/bin.
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chown and chmod the installed trampoline.
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Copy www/ to $target.
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Copy jail/ to jails template directory (unless --nojail specified).
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--nojail Do not copy the jail.
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--dry | -n Print out the actions but don't do anything."""
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elif operation == 'updatejails':
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print """sudo python setup.py updatejails [--dry|-n]
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Copy jail/ to each subdirectory in jails directory.
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--dry | -n Print out the actions but don't do anything."""
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print >>sys.stderr, (
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"""Invalid operation '%s'. Try python setup.py help."""
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# We build two separate lists, by walking www and console
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list_www = build_list_py_files('www')
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list_console = build_list_py_files('console')
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# Make sure that the files generated by conf are in the list
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# (since listmake is typically run before conf)
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if "www/conf/conf.py" not in list_www:
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list_www.append("www/conf/conf.py")
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# Make sure that console/python-console is in the list
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if "console/python-console" not in list_console:
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list_console.append("console/python-console")
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# Write these out to a file
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# the files that will be created/overwritten
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listfile = os.path.join(cwd, "install_list.py")
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file = open(listfile, "w")
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file.write("""# IVLE Configuration File
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# Provides lists of all files to be installed by `setup.py install' from
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# certain directories.
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# Note that any files with the given filename plus 'c' or 'o' (that is,
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# compiled .pyc or .pyo files) will be copied as well.
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# List of all installable files in www directory.
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writelist_pretty(file, list_www)
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# List of all installable files in console directory.
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writelist_pretty(file, list_console)
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except IOError, (errno, strerror):
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print "IO error(%s): %s" % (errno, strerror)
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print "Successfully wrote install_list.py"
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print ("You may modify the set of installable files before cutting the "
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def build_list_py_files(dir):
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"""Builds a list of all py files found in a directory and its
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subdirectories. Returns this as a list of strings."""
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for (dirpath, dirnames, filenames) in os.walk(dir):
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# Exclude directories beginning with a '.' (such as '.svn')
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filter_mutate(lambda x: x[0] != '.', dirnames)
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# All *.py files are added to the list
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pylist += [os.path.join(dirpath, item) for item in filenames
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if mimetypes.guess_type(item)[0] in listmake_mimetypes]
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def writelist_pretty(file, list):
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"""Writes a list one element per line, to a file."""
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file.write(' %s,\n' % repr(elem))
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global root_dir, ivle_install_dir, jail_base, public_host, allowed_uids
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# Set up some variables
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# the files that will be created/overwritten
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conffile = os.path.join(cwd, "www/conf/conf.py")
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conf_hfile = os.path.join(cwd, "trampoline/conf.h")
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# Get command-line arguments to avoid asking questions.
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(opts, args) = getopt.gnu_getopt(args, "", ['root_dir=',
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'ivle_install_dir=', 'jail_base=', 'allowed_uids='])
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print >>sys.stderr, "Invalid arguments:", string.join(args, ' ')
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# Interactive mode. Prompt the user for all the values.
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print """This tool will create the following files:
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prompting you for details about your configuration. The file will be
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overwritten if it already exists. It will *not* install or deploy IVLE.
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Please hit Ctrl+C now if you do not wish to do this.
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""" % (conffile, conf_hfile)
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# Get information from the administrator
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# If EOF is encountered at any time during the questioning, just exit
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root_dir = query_user(root_dir,
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"""Root directory where IVLE is located (in URL space):""")
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ivle_install_dir = query_user(ivle_install_dir,
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'Root directory where IVLE will be installed (on the local file '
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jail_base = query_user(jail_base,
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"""Root directory where the jails (containing user files) are stored
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(on the local file system):""")
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public_host = query_user(public_host,
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"""Hostname which will cause the server to go into "public mode",
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providing login-free access to student's published work:""")
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allowed_uids = query_user(allowed_uids,
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"""UID of the web server process which will run IVLE.
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Only this user may execute the trampoline. May specify multiple users as
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a comma-separated list.
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# Non-interactive mode. Parse the options.
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if '--root_dir' in opts:
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root_dir = opts['--root_dir']
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if '--ivle_install_dir' in opts:
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ivle_install_dir = opts['--ivle_install_dir']
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if '--jail_base' in opts:
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jail_base = opts['--jail_base']
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if '--public_host' in opts:
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public_host = opts['--public_host']
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if '--allowed_uids' in opts:
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allowed_uids = opts['--allowed_uids']
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# Error handling on input values
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allowed_uids = map(int, allowed_uids.split(','))
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print >>sys.stderr, (
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"Invalid UID list (%s).\n"
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"Must be a comma-separated list of integers." % allowed_uids)
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# Write www/conf/conf.py
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conf = open(conffile, "w")
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conf.write("""# IVLE Configuration File
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# Miscellaneous application settings
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# In URL space, where in the site is IVLE located. (All URLs will be prefixed
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# eg. "/" or "/ivle".
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# In the local file system, where IVLE is actually installed.
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# This directory should contain the "www" and "bin" directories.
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ivle_install_dir = "%s"
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# The server goes into "public mode" if the browser sends a request with this
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# host. This is for security reasons - we only serve public student files on a
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# separate domain to the main IVLE site.
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# Public mode does not use cookies, and serves only public content.
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# Private mode (normal mode) requires login, and only serves files relevant to
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# the logged-in user.
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# In the local file system, where are the student/user file spaces located.
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# The user jails are expected to be located immediately in subdirectories of
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""" % (root_dir, ivle_install_dir, public_host, jail_base))
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except IOError, (errno, strerror):
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print "IO error(%s): %s" % (errno, strerror)
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print "Successfully wrote www/conf/conf.py"
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# Write trampoline/conf.h
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conf = open(conf_hfile, "w")
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conf.write("""/* IVLE Configuration File
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* Administrator settings required by trampoline.
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* Note: trampoline will have to be rebuilt in order for changes to this file
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/* In the local file system, where are the jails located.
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* The trampoline does not allow the creation of a jail anywhere besides
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* jail_base or a subdirectory of jail_base.
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static const char* jail_base = "%s";
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/* Which user IDs are allowed to run the trampoline.
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* This list should be limited to the web server user.
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* (Note that root is an implicit member of this list).
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static const int allowed_uids[] = { %s };
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""" % (jail_base, repr(allowed_uids)[1:-1]))
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except IOError, (errno, strerror):
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print "IO error(%s): %s" % (errno, strerror)
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print "Successfully wrote trampoline/conf.h"
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print "You may modify the configuration at any time by editing"
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# Get "dry" variable from command line
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(opts, args) = getopt.gnu_getopt(args, "n", ['dry'])
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dry = '-n' in opts or '--dry' in opts
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print "Dry run (no actions will be executed\n"
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# Compile the trampoline
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action_runprog('gcc', ['-Wall', '-o', 'trampoline/trampoline',
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'trampoline/trampoline.c'], dry)
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# Create the jail and its subdirectories
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# Note: Other subdirs will be made by copying files
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action_mkdir('jail', dry)
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action_mkdir('jail/home', dry)
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action_mkdir('jail/tmp', dry)
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# Copy all console and operating system files into the jail
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action_copylist(install_list.list_console, 'jail/opt/ivle', dry)
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copy_os_files_jail(dry)
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# Chmod the python console
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action_chmod_x('jail/opt/ivle/console/python-console', dry)
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# Compile .py files into .pyc or .pyo files
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compileall.compile_dir('www', quiet=True)
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compileall.compile_dir('console', quiet=True)
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def copy_os_files_jail(dry):
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"""Copies necessary Operating System files from their usual locations
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into the jail/ directory of the cwd."""
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# Currently source paths are configured for Ubuntu.
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for filename in JAIL_FILES:
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copy_file_to_jail(filename, dry)
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for src, dst in JAIL_LINKS.items():
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action_symlink(src, dst, dry)
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for src, dst in JAIL_COPYTREES.items():
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action_copytree(src, dst, dry)
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def copy_file_to_jail(src, dry):
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"""Copies a single file from an absolute location into the same location
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within the jail. src must begin with a '/'. The jail will be located
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in a 'jail' subdirectory of the current path."""
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action_copyfile(src, 'jail' + src, dry)
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# Get "dry" and "nojail" variables from command line
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(opts, args) = getopt.gnu_getopt(args, "n", ['dry', 'nojail'])
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dry = '-n' in opts or '--dry' in opts
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nojail = '--nojail' in opts
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print "Dry run (no actions will be executed\n"
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if not dry and os.geteuid() != 0:
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print >>sys.stderr, "Must be root to run install"
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print >>sys.stderr, "(I need to chown some files)."
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# Create the target (install) directory
602
action_mkdir(ivle_install_dir, dry)
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# Create bin and copy the compiled files there
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action_mkdir(os.path.join(ivle_install_dir, 'bin'), dry)
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tramppath = os.path.join(ivle_install_dir, 'bin/trampoline')
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action_copyfile('trampoline/trampoline', tramppath, dry)
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# chown trampoline to root and set setuid bit
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action_chown_setuid(tramppath, dry)
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# Copy the www directory using the list
612
action_copylist(install_list.list_www, ivle_install_dir, dry)
615
# Copy the local jail directory built by the build action
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# to the jails template directory (it will be used as a template
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# for all the students' jails).
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action_copytree('jail', os.path.join(jail_base, 'template'), dry)
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# Append IVLE path to ivle.pth in python site packages
621
# (Unless it's already there)
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ivle_pth = os.path.join(sys.prefix,
623
"lib/python2.5/site-packages/ivle.pth")
624
ivle_www = os.path.join(ivle_install_dir, "www")
625
write_ivle_pth = True
627
file = open(ivle_pth, 'r')
629
if line.strip() == ivle_www:
630
write_ivle_pth = False
632
except (IOError, OSError):
635
action_append(ivle_pth, ivle_www)
639
def updatejails(args):
640
# Get "dry" variable from command line
641
(opts, args) = getopt.gnu_getopt(args, "n", ['dry'])
643
dry = '-n' in opts or '--dry' in opts
646
print "Dry run (no actions will be executed\n"
648
if not dry and os.geteuid() != 0:
649
print >>sys.stderr, "Must be root to run install"
650
print >>sys.stderr, "(I need to chown some files)."
653
# Update the template jail directory in case it hasn't been installed
655
action_copytree('jail', os.path.join(jail_base, 'template'), dry)
657
# Re-link all the files in all students jails.
658
for dir in os.listdir(jail_base):
659
if dir == 'template': continue
660
# First back up the student's home directory
661
temp_home = os.tmpnam()
662
action_rename(os.path.join(jail_base, dir, 'home'), temp_home, dry)
663
# Delete the student's jail and relink the jail files
664
action_linktree(os.path.join(jail_base, 'template'),
665
os.path.join(jail_base, dir), dry)
666
# Restore the student's home directory
667
action_rename(temp_home, os.path.join(jail_base, dir, 'home'), dry)
668
# Set up the user's home directory just in case they don't have a
669
# directory for this yet
670
action_mkdir(os.path.join(jail_base, dir, 'home', dir), dry)
674
# The actions call Python os functions but print actions and handle dryness.
675
# May still throw os exceptions if errors occur.
678
"""Represents an error when running a program (nonzero return)."""
679
def __init__(self, prog, retcode):
681
self.retcode = retcode
683
return str(self.prog) + " returned " + repr(self.retcode)
685
def action_runprog(prog, args, dry):
686
"""Runs a unix program. Searches in $PATH. Synchronous (waits for the
687
program to return). Runs in the current environment. First prints the
688
action as a "bash" line.
690
Throws a RunError with a retcode of the return value of the program,
691
if the program did not return 0.
693
prog: String. Name of the program. (No path required, if in $PATH).
694
args: [String]. Arguments to the program.
695
dry: Bool. If True, prints but does not execute.
697
print prog, string.join(args, ' ')
699
ret = os.spawnvp(os.P_WAIT, prog, args)
701
raise RunError(prog, ret)
703
def action_rename(src, dst, dry):
704
"""Calls rename. Deletes the target if it already exists."""
705
if os.access(dst, os.F_OK):
708
shutil.rmtree(dst, True)
709
print "mv ", src, dst
713
except OSError, (err, msg):
714
if err != errno.EEXIST:
717
def action_mkdir(path, dry):
718
"""Calls mkdir. Silently ignored if the directory already exists.
719
Creates all parent directories as necessary."""
720
print "mkdir -p", path
724
except OSError, (err, msg):
725
if err != errno.EEXIST:
728
def action_copytree(src, dst, dry):
729
"""Copies an entire directory tree. Symlinks are seen as normal files and
730
copies of the entire file (not the link) are made. Creates all parent
731
directories as necessary.
733
See shutil.copytree."""
734
if os.access(dst, os.F_OK):
737
shutil.rmtree(dst, True)
738
print "cp -r", src, dst
740
shutil.copytree(src, dst, True)
742
def action_linktree(src, dst, dry):
743
"""Hard-links an entire directory tree. Same as copytree but the created
744
files are hard-links not actual copies. Removes the existing destination.
746
if os.access(dst, os.F_OK):
749
shutil.rmtree(dst, True)
750
print "<cp with hardlinks> -r", src, dst
752
common.makeuser.linktree(src, dst)
754
def action_copylist(srclist, dst, dry):
755
"""Copies all files in a list to a new location. The files in the list
756
are read relative to the current directory, and their destinations are the
757
same paths relative to dst. Creates all parent directories as necessary.
759
for srcfile in srclist:
760
dstfile = os.path.join(dst, srcfile)
761
dstdir = os.path.split(dstfile)[0]
762
if not os.path.isdir(dstdir):
763
action_mkdir(dstdir, dry)
764
print "cp -f", srcfile, dstfile
767
shutil.copyfile(srcfile, dstfile)
768
shutil.copymode(srcfile, dstfile)
772
def action_copyfile(src, dst, dry):
773
"""Copies one file to a new location. Creates all parent directories
776
dstdir = os.path.split(dst)[0]
777
if not os.path.isdir(dstdir):
778
action_mkdir(dstdir, dry)
779
print "cp -f", src, dst
782
shutil.copyfile(src, dst)
783
shutil.copymode(src, dst)
787
def action_symlink(src, dst, dry):
788
"""Creates a symlink in a given location. Creates all parent directories
791
dstdir = os.path.split(dst)[0]
792
if not os.path.isdir(dstdir):
793
action_mkdir(dstdir, dry)
794
# Delete existing file
795
if os.path.exists(dst):
797
print "ln -fs", src, dst
801
def action_append(ivle_pth, ivle_www):
802
file = open(ivle_pth, 'a+')
803
file.write(ivle_www + '\n')
806
def action_chown_setuid(file, dry):
807
"""Chowns a file to root, and sets the setuid bit on the file.
808
Calling this function requires the euid to be root.
809
The actual mode of path is set to: rws--s--s
811
print "chown root:root", file
814
print "chmod a+xs", file
815
print "chmod u+rw", file
817
os.chmod(file, stat.S_IXUSR | stat.S_IXGRP | stat.S_IXOTH
818
| stat.S_ISUID | stat.S_IRUSR | stat.S_IWUSR)
820
def action_chmod_x(file, dry):
821
"""Chmod +xs a file (sets execute permission)."""
822
print "chmod u+rwx", file
824
os.chmod(file, stat.S_IXUSR | stat.S_IRUSR | stat.S_IWUSR)
826
def query_user(default, prompt):
827
"""Prompts the user for a string, which is read from a line of stdin.
828
Exits silently if EOF is encountered. Returns the string, with spaces
829
removed from the beginning and end.
831
Returns default if a 0-length line (after spaces removed) was read.
833
sys.stdout.write('%s\n (default: "%s")\n>' % (prompt, default))
835
val = sys.stdin.readline()
836
except KeyboardInterrupt:
838
sys.stdout.write("\n")
840
sys.stdout.write("\n")
842
if val == '': sys.exit(1)
843
# If empty line, return default
845
if val == '': return default
848
def filter_mutate(function, list):
849
"""Like built-in filter, but mutates the given list instead of returning a
850
new one. Returns None."""
853
# Delete elements which do not match
854
if not function(list[i]):
858
if __name__ == "__main__":
added
removed
setup.py
