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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 config [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 lib/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(), 'lib'))
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import common.makeuser
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# Determine which Python version (2.4 or 2.5, for example) we are running,
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# and use that as the filename to the Python directory.
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# Just get the first 3 characters of sys.version.
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PYTHON_VERSION = sys.version[0:3]
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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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'/usr/bin/python%s' % PYTHON_VERSION,
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# Needed by fileservice
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'/lib/libcom_err.so.2',
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'/lib/libcrypt.so.1',
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'/lib/libkeyutils.so.1',
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'/lib/libresolv.so.2',
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'/usr/lib/libapr-1.so.0',
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'/usr/lib/libaprutil-1.so.0',
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'/usr/lib/libdb-4.4.so',
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'/usr/lib/libexpat.so.1',
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'/usr/lib/libgcrypt.so.11',
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'/usr/lib/libgnutls.so.13',
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'/usr/lib/libgpg-error.so.0',
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'/usr/lib/libgssapi_krb5.so.2',
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'/usr/lib/libk5crypto.so.3',
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'/usr/lib/libkrb5.so.3',
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'/usr/lib/libkrb5support.so.0',
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'/usr/lib/liblber.so.2',
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'/usr/lib/libldap_r.so.2',
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'/usr/lib/libneon.so.26',
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'/usr/lib/libpq.so.5',
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'/usr/lib/libsasl2.so.2',
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'/usr/lib/libsqlite3.so.0',
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'/usr/lib/libsvn_client-1.so.1',
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'/usr/lib/libsvn_delta-1.so.1',
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'/usr/lib/libsvn_diff-1.so.1',
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'/usr/lib/libsvn_fs-1.so.1',
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'/usr/lib/libsvn_fs_base-1.so.1',
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'/usr/lib/libsvn_fs_fs-1.so.1',
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'/usr/lib/libsvn_ra-1.so.1',
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'/usr/lib/libsvn_ra_dav-1.so.1',
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'/usr/lib/libsvn_ra_local-1.so.1',
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'/usr/lib/libsvn_ra_svn-1.so.1',
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'/usr/lib/libsvn_repos-1.so.1',
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'/usr/lib/libsvn_subr-1.so.1',
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'/usr/lib/libsvn_wc-1.so.1',
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'/usr/lib/libtasn1.so.3',
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'/usr/lib/libxml2.so.2',
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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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'python%s' % PYTHON_VERSION: '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/python%s' % PYTHON_VERSION:
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'jail/usr/lib/python%s' % PYTHON_VERSION,
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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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"""A configuration option; one of the things written to conf.py."""
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def __init__(self, option_name, default, prompt, comment):
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"""Creates a configuration option.
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option_name: Name of the variable in conf.py. Also name of the
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command-line argument to setup.py conf.
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default: Default value for this variable.
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prompt: (Short) string presented during the interactive prompt in
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comment: (Long) comment string stored in conf.py. Each line of this
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string should begin with a '#'.
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self.option_name = option_name
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self.default = default
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self.comment = comment
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# Configuration options, defaults and descriptions
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config_options.append(ConfigOption("root_dir", "/ivle",
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"""Root directory where IVLE is located (in URL space):""",
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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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config_options.append(ConfigOption("ivle_install_dir", "/opt/ivle",
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'Root directory where IVLE will be installed (on the local file '
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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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config_options.append(ConfigOption("jail_base", "/home/informatics/jails",
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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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# 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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# this location."""))
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config_options.append(ConfigOption("subjects_base",
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"/home/informatics/subjects",
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"""Root directory where the subject directories (containing worksheets
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and other per-subject files) are stored (on the local file system):""",
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# In the local file system, where are the per-subject file spaces located.
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# The individual subject directories are expected to be located immediately
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# in subdirectories of this location."""))
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config_options.append(ConfigOption("problems_base",
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"/home/informatics/problems",
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"""Root directory where the problem directories (containing
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subject-independent problem sheets) are stored (on the local file
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# In the local file system, where are the subject-independent problem sheet
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# file spaces located."""))
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config_options.append(ConfigOption("public_host", "public.localhost",
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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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# 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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config_options.append(ConfigOption("allowed_uids", "33",
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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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# The User-ID of the web server process which will run IVLE, and any other
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# users who are allowed to run the trampoline. This is stores as a string of
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# comma-separated integers, simply because it is not used within Python, only
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# used by the setup program to write to conf.h (see setup.py config)."""))
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config_options.append(ConfigOption("db_host", "localhost",
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"""PostgreSQL Database config
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==========================
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Hostname of the DB server:""",
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### PostgreSQL Database config ###
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# Database server hostname"""))
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config_options.append(ConfigOption("db_port", "5432",
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"""Port of the DB server:""",
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# Database server port"""))
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config_options.append(ConfigOption("db_dbname", "ivle",
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"""Database name:""",
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config_options.append(ConfigOption("db_user", "postgres",
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"""Username for DB server login:""",
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# Database username"""))
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config_options.append(ConfigOption("db_password", "",
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"""Password for DB server login:
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(Caution: This password is stored in plaintext in lib/conf/conf.py)""",
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# Database password"""))
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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__("lib/conf/conf")
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for opt in config_options:
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globals()[opt.option_name] = confmodule.__dict__[opt.option_name]
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globals()[opt.option_name] = opt.default
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# Just set reasonable defaults
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for opt in config_options:
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globals()[opt.option_name] = opt.default
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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', 'application/xml']
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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] [--nosubjects] [-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 == 'config':
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print """python setup.py config [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 lib/conf/conf.py and trampoline/conf.h.
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for opt in config_options:
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print " --" + opt.option_name
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print """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] [--nosubjects][--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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Copy subjects/ to subjects directory (unless --nosubjects specified).
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--nojail Do not copy the jail.
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--nosubjects Do not copy the subjects and problems directories.
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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_lib = build_list_py_files('lib')
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list_scripts = build_list_py_files('scripts')
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list_subjects = build_list_py_files('subjects', no_top_level=True)
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list_problems = build_list_py_files('problems', no_top_level=True)
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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 "lib/conf/conf.py" not in list_lib:
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list_lib.append("lib/conf/conf.py")
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# Make sure that console/python-console is in the list
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if "scripts/python-console" not in list_scripts:
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list_scripts.append("scripts/python-console")
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if "scripts/fileservice" not in list_scripts:
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list_scripts.append("scripts/fileservice")
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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 lib directory.
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writelist_pretty(file, list_lib)
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# List of all installable files in scripts directory.
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writelist_pretty(file, list_scripts)
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# List of all installable files in subjects directory.
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# This is to install sample subjects and material.
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writelist_pretty(file, list_subjects)
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# List of all installable files in problems directory.
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# This is to install sample exercise material.
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writelist_pretty(file, list_problems)
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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, no_top_level=False):
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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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no_top_level=True means the file paths will not include the top-level
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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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for i in range(0, len(pylist)):
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_, pylist[i] = pylist[i].split(os.sep, 1)
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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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# Set up some variables
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# the files that will be created/overwritten
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conffile = os.path.join(cwd, "lib/conf/conf.py")
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jailconffile = os.path.join(cwd, "lib/conf/jailconf.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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for opt in config_options:
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optnames.append(opt.option_name + "=")
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(opts, args) = getopt.gnu_getopt(args, "", optnames)
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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, jailconffile, 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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for opt in config_options:
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globals()[opt.option_name] = \
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query_user(globals()[opt.option_name], opt.prompt)
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# Non-interactive mode. Parse the options.
581
for opt in config_options:
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if '--' + opt.option_name in opts:
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globals()[opt.option_name] = opts['--' + opt.option_name]
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# Error handling on input values
587
allowed_uids_list = 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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db_port = int(db_port)
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if db_port < 0 or db_port >= 65536: raise ValueError()
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print >>sys.stderr, (
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"Invalid DB port (%s).\n"
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"Must be an integer between 0 and 65535." % repr(db_port))
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# Write lib/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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for opt in config_options:
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conf.write('%s\n%s = %s\n' % (opt.comment, opt.option_name,
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repr(globals()[opt.option_name])))
617
except IOError, (errno, strerror):
618
print "IO error(%s): %s" % (errno, strerror)
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print "Successfully wrote lib/conf/conf.py"
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# Write conf/jailconf.py
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conf = open(jailconffile, "w")
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# In the "in-jail" version of conf, we don't need MOST of the details
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# (it would be a security risk to have them here).
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# So we just write root_dir, and jail_base is "/".
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# (jail_base being "/" means "jail-relative" paths are relative to "/"
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# when inside the jail.)
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conf.write("""# IVLE Configuration File
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# Miscellaneous application settings
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# (User jail version)
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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 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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# The hostname for serving publicly accessible pages
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""" % (repr(root_dir),repr(public_host)))
654
except IOError, (errno, strerror):
655
print "IO error(%s): %s" % (errno, strerror)
658
print "Successfully wrote lib/conf/jailconf.py"
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# Write trampoline/conf.h
663
conf = open(conf_hfile, "w")
665
conf.write("""/* IVLE Configuration File
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* Administrator settings required by trampoline.
668
* 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.
679
* This list should be limited to the web server user.
680
* (Note that root is an implicit member of this list).
682
static const int allowed_uids[] = { %s };
683
""" % (repr(jail_base)[1:-1], repr(allowed_uids_list)[1:-1]))
684
# Note: The above uses PYTHON reprs, not C reprs
685
# However they should be the same with the exception of the outer
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# characters, which are stripped off and replaced
689
except IOError, (errno, strerror):
690
print "IO error(%s): %s" % (errno, strerror)
693
print "Successfully wrote trampoline/conf.h"
696
print "You may modify the configuration at any time by editing"
704
# Get "dry" variable from command line
705
(opts, args) = getopt.gnu_getopt(args, "n", ['dry'])
707
dry = '-n' in opts or '--dry' in opts
710
print "Dry run (no actions will be executed\n"
712
# Compile the trampoline
714
os.chdir('trampoline')
715
action_runprog('make', [], dry)
718
# Create the jail and its subdirectories
719
# Note: Other subdirs will be made by copying files
720
action_mkdir('jail', dry)
721
action_mkdir('jail/home', dry)
722
action_mkdir('jail/tmp', dry)
724
# Copy all console and operating system files into the jail
725
action_copylist(install_list.list_scripts, 'jail/opt/ivle', dry)
726
copy_os_files_jail(dry)
727
# Chmod the python console
728
action_chmod_x('jail/opt/ivle/scripts/python-console', dry)
729
action_chmod_x('jail/opt/ivle/scripts/fileservice', dry)
731
# Also copy the IVLE lib directory into the jail
732
# This is necessary for running certain scripts
733
action_copylist(install_list.list_lib, 'jail/opt/ivle', dry)
734
# IMPORTANT: The file jail/opt/ivle/lib/conf/conf.py contains details
735
# which could compromise security if left in the jail (such as the DB
737
# The "safe" version is in jailconf.py. Delete conf.py and replace it with
739
action_copyfile('lib/conf/jailconf.py',
740
'jail/opt/ivle/lib/conf/conf.py', dry)
742
# Compile .py files into .pyc or .pyo files
743
compileall.compile_dir('www', quiet=True)
744
compileall.compile_dir('lib', quiet=True)
745
compileall.compile_dir('scripts', quiet=True)
746
compileall.compile_dir('jail/opt/ivle/lib', quiet=True)
748
# Set up ivle.pth inside the jail
749
# Need to set /opt/ivle/lib to be on the import path
751
"jail/usr/lib/python%s/site-packages/ivle.pth" % PYTHON_VERSION
752
f = open(ivle_pth, 'w')
753
f.write('/opt/ivle/lib\n')
758
def copy_os_files_jail(dry):
759
"""Copies necessary Operating System files from their usual locations
760
into the jail/ directory of the cwd."""
761
# Currently source paths are configured for Ubuntu.
762
for filename in JAIL_FILES:
763
copy_file_to_jail(filename, dry)
764
for src, dst in JAIL_LINKS.items():
765
action_symlink(src, dst, dry)
766
for src, dst in JAIL_COPYTREES.items():
767
action_copytree(src, dst, dry)
769
def copy_file_to_jail(src, dry):
770
"""Copies a single file from an absolute location into the same location
771
within the jail. src must begin with a '/'. The jail will be located
772
in a 'jail' subdirectory of the current path."""
773
action_copyfile(src, 'jail' + src, dry)
776
# Get "dry" and "nojail" variables from command line
777
(opts, args) = getopt.gnu_getopt(args, "n",
778
['dry', 'nojail', 'nosubjects'])
780
dry = '-n' in opts or '--dry' in opts
781
nojail = '--nojail' in opts
782
nosubjects = '--nosubjects' in opts
785
print "Dry run (no actions will be executed\n"
787
if not dry and os.geteuid() != 0:
788
print >>sys.stderr, "Must be root to run install"
789
print >>sys.stderr, "(I need to chown some files)."
792
# Create the target (install) directory
793
action_mkdir(ivle_install_dir, dry)
795
# Create bin and copy the compiled files there
796
action_mkdir(os.path.join(ivle_install_dir, 'bin'), dry)
797
tramppath = os.path.join(ivle_install_dir, 'bin/trampoline')
798
action_copyfile('trampoline/trampoline', tramppath, dry)
799
# chown trampoline to root and set setuid bit
800
action_chown_setuid(tramppath, dry)
802
# Copy the www and lib directories using the list
803
action_copylist(install_list.list_www, ivle_install_dir, dry)
804
action_copylist(install_list.list_lib, ivle_install_dir, dry)
807
# Copy the local jail directory built by the build action
808
# to the jails template directory (it will be used as a template
809
# for all the students' jails).
810
action_copytree('jail', os.path.join(jail_base, 'template'), dry)
812
# Copy the subjects and problems directories across
813
action_copylist(install_list.list_subjects, subjects_base, dry,
815
action_copylist(install_list.list_problems, problems_base, dry,
818
# Append IVLE path to ivle.pth in python site packages
819
# (Unless it's already there)
820
ivle_pth = os.path.join(sys.prefix,
821
"lib/python%s/site-packages/ivle.pth" % PYTHON_VERSION)
822
ivle_www = os.path.join(ivle_install_dir, "www")
823
ivle_lib = os.path.join(ivle_install_dir, "lib")
824
write_ivle_pth = True
825
write_ivle_lib_pth = True
827
file = open(ivle_pth, 'r')
829
if line.strip() == ivle_www:
830
write_ivle_pth = False
831
elif line.strip() == ivle_lib:
832
write_ivle_lib_pth = False
834
except (IOError, OSError):
837
action_append(ivle_pth, ivle_www)
838
if write_ivle_lib_pth:
839
action_append(ivle_pth, ivle_lib)
843
def updatejails(args):
844
# Get "dry" variable from command line
845
(opts, args) = getopt.gnu_getopt(args, "n", ['dry'])
847
dry = '-n' in opts or '--dry' in opts
850
print "Dry run (no actions will be executed\n"
852
if not dry and os.geteuid() != 0:
853
print >>sys.stderr, "Must be root to run install"
854
print >>sys.stderr, "(I need to chown some files)."
857
# Update the template jail directory in case it hasn't been installed
859
action_copytree('jail', os.path.join(jail_base, 'template'), dry)
861
# Re-link all the files in all students jails.
862
for dir in os.listdir(jail_base):
863
if dir == 'template': continue
864
# First back up the student's home directory
865
temp_home = os.tmpnam()
866
action_rename(os.path.join(jail_base, dir, 'home'), temp_home, dry)
867
# Delete the student's jail and relink the jail files
868
action_linktree(os.path.join(jail_base, 'template'),
869
os.path.join(jail_base, dir), dry)
870
# Restore the student's home directory
871
action_rename(temp_home, os.path.join(jail_base, dir, 'home'), dry)
872
# Set up the user's home directory just in case they don't have a
873
# directory for this yet
874
action_mkdir(os.path.join(jail_base, dir, 'home', dir), dry)
878
# The actions call Python os functions but print actions and handle dryness.
879
# May still throw os exceptions if errors occur.
882
"""Represents an error when running a program (nonzero return)."""
883
def __init__(self, prog, retcode):
885
self.retcode = retcode
887
return str(self.prog) + " returned " + repr(self.retcode)
889
def action_runprog(prog, args, dry):
890
"""Runs a unix program. Searches in $PATH. Synchronous (waits for the
891
program to return). Runs in the current environment. First prints the
892
action as a "bash" line.
894
Throws a RunError with a retcode of the return value of the program,
895
if the program did not return 0.
897
prog: String. Name of the program. (No path required, if in $PATH).
898
args: [String]. Arguments to the program.
899
dry: Bool. If True, prints but does not execute.
901
print prog, string.join(args, ' ')
903
ret = os.spawnvp(os.P_WAIT, prog, args)
905
raise RunError(prog, ret)
907
def action_remove(path, dry):
908
"""Calls rmtree, deleting the target file if it exists."""
912
shutil.rmtree(path, True)
913
except OSError, (err, msg):
914
if err != errno.EEXIST:
916
# Otherwise, didn't exist, so we don't care
918
def action_rename(src, dst, dry):
919
"""Calls rename. Deletes the target if it already exists."""
920
action_remove(dst, dry)
921
print "mv ", src, dst
925
except OSError, (err, msg):
926
if err != errno.EEXIST:
929
def action_mkdir(path, dry):
930
"""Calls mkdir. Silently ignored if the directory already exists.
931
Creates all parent directories as necessary."""
932
print "mkdir -p", path
936
except OSError, (err, msg):
937
if err != errno.EEXIST:
940
def action_copytree(src, dst, dry):
941
"""Copies an entire directory tree. Symlinks are seen as normal files and
942
copies of the entire file (not the link) are made. Creates all parent
943
directories as necessary.
945
See shutil.copytree."""
946
action_remove(dst, dry)
947
print "cp -r", src, dst
949
shutil.copytree(src, dst, True)
951
def action_linktree(src, dst, dry):
952
"""Hard-links an entire directory tree. Same as copytree but the created
953
files are hard-links not actual copies. Removes the existing destination.
955
action_remove(dst, dry)
956
print "<cp with hardlinks> -r", src, dst
958
common.makeuser.linktree(src, dst)
960
def action_copylist(srclist, dst, dry, srcdir="."):
961
"""Copies all files in a list to a new location. The files in the list
962
are read relative to the current directory, and their destinations are the
963
same paths relative to dst. Creates all parent directories as necessary.
964
srcdir is "." by default, can be overridden.
966
for srcfile in srclist:
967
dstfile = os.path.join(dst, srcfile)
968
srcfile = os.path.join(srcdir, srcfile)
969
dstdir = os.path.split(dstfile)[0]
970
if not os.path.isdir(dstdir):
971
action_mkdir(dstdir, dry)
972
print "cp -f", srcfile, dstfile
975
shutil.copyfile(srcfile, dstfile)
976
shutil.copymode(srcfile, dstfile)
980
def action_copyfile(src, dst, dry):
981
"""Copies one file to a new location. Creates all parent directories
983
Warn if file not found.
985
dstdir = os.path.split(dst)[0]
986
if not os.path.isdir(dstdir):
987
action_mkdir(dstdir, dry)
988
print "cp -f", src, dst
991
shutil.copyfile(src, dst)
992
shutil.copymode(src, dst)
993
except (shutil.Error, IOError), e:
994
print "Warning: " + str(e)
996
def action_symlink(src, dst, dry):
997
"""Creates a symlink in a given location. Creates all parent directories
1000
dstdir = os.path.split(dst)[0]
1001
if not os.path.isdir(dstdir):
1002
action_mkdir(dstdir, dry)
1003
# Delete existing file
1004
if os.path.exists(dst):
1006
print "ln -fs", src, dst
1008
os.symlink(src, dst)
1010
def action_append(ivle_pth, ivle_www):
1011
file = open(ivle_pth, 'a+')
1012
file.write(ivle_www + '\n')
1015
def action_chown_setuid(file, dry):
1016
"""Chowns a file to root, and sets the setuid bit on the file.
1017
Calling this function requires the euid to be root.
1018
The actual mode of path is set to: rws--s--s
1020
print "chown root:root", file
1022
os.chown(file, 0, 0)
1023
print "chmod a+xs", file
1024
print "chmod u+rw", file
1026
os.chmod(file, stat.S_IXUSR | stat.S_IXGRP | stat.S_IXOTH
1027
| stat.S_ISUID | stat.S_IRUSR | stat.S_IWUSR)
1029
def action_chmod_x(file, dry):
1030
"""Chmod 755 a file (sets permissions to rwxr-xr-x)."""
1031
print "chmod 755", file
1033
os.chmod(file, stat.S_IXUSR | stat.S_IRUSR | stat.S_IWUSR
1034
| stat.S_IXGRP | stat.S_IRGRP | stat.S_IXOTH | stat.S_IROTH)
1036
def query_user(default, prompt):
1037
"""Prompts the user for a string, which is read from a line of stdin.
1038
Exits silently if EOF is encountered. Returns the string, with spaces
1039
removed from the beginning and end.
1041
Returns default if a 0-length line (after spaces removed) was read.
1043
sys.stdout.write('%s\n (default: "%s")\n>' % (prompt, default))
1045
val = sys.stdin.readline()
1046
except KeyboardInterrupt:
1048
sys.stdout.write("\n")
1050
sys.stdout.write("\n")
1052
if val == '': sys.exit(1)
1053
# If empty line, return default
1055
if val == '': return default
1058
def filter_mutate(function, list):
1059
"""Like built-in filter, but mutates the given list instead of returning a
1060
new one. Returns None."""
1063
# Delete elements which do not match
1064
if not function(list[i]):
1068
if __name__ == "__main__":
added
removed
setup.py
