98
100
#f.write("@admin = rw\n")
101
os.rename(temp_name, conf_name)
102
chown_to_webserver(conf_name)
103
os.rename(ivle.conf.svn_conf + ".new", ivle.conf.svn_conf)
104
chown_to_webserver(ivle.conf.svn_conf)
104
def rebuild_svn_group_config(store, config):
106
def rebuild_svn_group_config():
105
107
"""Build the complete SVN configuration file for groups
106
@param config: An ivle.config.Config object.
108
conf_name = config['paths']['svn']['group_conf']
109
temp_name = conf_name + ".new"
110
f = open(temp_name, "w")
110
groups = conn.get_all('project_group',
111
['groupid', 'groupnm', 'projectsetid'])
112
f = open(ivle.conf.svn_group_conf + ".new", "w")
111
113
f.write("# IVLE SVN Group Repositories Configuration\n")
112
114
f.write("# Auto-generated on %s\n" % time.asctime())
114
for group in store.find(ProjectGroup):
115
offering = group.project_set.offering
116
reponame = "_".join([offering.subject.short_name,
117
offering.semester.year,
118
offering.semester.semester,
117
projectsetid = g['projectsetid']
118
offeringinfo = conn.get_offering_info(projectsetid)
119
subj_short_name = offeringinfo['subj_short_name']
120
year = offeringinfo['year']
121
semester = offeringinfo['semester']
122
reponame = "_".join([subj_short_name, year, semester, g['groupnm']])
120
123
f.write("[%s:/]\n"%reponame)
121
for user in group.members:
122
f.write("%s = rw\n" % user.login)
124
users = conn.get_projectgroup_members(g['groupid'])
126
f.write("%s = rw\n"%u['login'])
125
os.rename(temp_name, conf_name)
126
chown_to_webserver(conf_name)
129
os.rename(ivle.conf.svn_group_conf + ".new", ivle.conf.svn_group_conf)
130
chown_to_webserver(ivle.conf.svn_group_conf)
128
def make_svn_auth(store, login, config, throw_on_error=True):
132
def make_svn_auth(login, throw_on_error=True):
129
133
"""Setup svn authentication for the given user.
130
Uses the given DB store object. Does not commit to the db.
134
FIXME: create local.auth entry
132
# filename is, eg, /var/lib/ivle/svn/ivle.auth
133
filename = config['paths']['svn']['auth_ivle']
134
passwd = hashlib.md5(uuid.uuid4().bytes).hexdigest()
135
if os.path.exists(filename):
136
passwd = md5.new(uuid.uuid4().bytes).digest().encode('hex')
137
if os.path.exists(ivle.conf.svn_auth_ivle):
140
user = ivle.database.User.get_by_login(store, login)
141
user.svn_pass = unicode(passwd)
142
ivle.db.DB().update_user(login, svn_pass=passwd)
143
res = os.system("htpasswd -%smb %s %s %s" % (create, filename,
144
res = os.system("htpasswd -%smb %s %s %s" % (create,
145
ivle.conf.svn_auth_ivle,
145
147
if res != 0 and throw_on_error:
146
148
raise Exception("Unable to create ivle-auth for %s" % login)
148
150
# Make sure the file is owned by the web server
149
151
if create == "c":
150
chown_to_webserver(filename)
152
chown_to_webserver(ivle.conf.svn_auth_ivle)
192
194
Chowns the user's directory within the jail to the given UID.
196
Note: This takes separate username and uid arguments. The UID need not
197
*necessarily* correspond to a Unix username at all, if all you are
198
planning to do is setuid to it. This allows the caller the freedom of
199
deciding the binding between username and uid, if any.
194
201
force: If false, exception if jail already exists for this user.
195
202
If true (default), overwrites it, but preserves home directory.
204
svn_pass: If provided this will be a string, the randomly-generated
205
Subversion password for this user (if you happen to already have it).
206
If not provided, it will be read from the database.
197
208
# MUST run as root or some of this may fail
198
209
if os.getuid() != 0:
199
210
raise Exception("Must run make_jail as root")
201
212
# tempdir is for putting backup homes in
202
jail_src_base = config['paths']['jails']['src']
203
tempdir = os.path.join(jail_src_base, '__temp__')
213
tempdir = os.path.join(ivle.conf.jail_base, '__temp__')
204
214
if not os.path.exists(tempdir):
205
215
os.makedirs(tempdir)
206
216
elif not os.path.isdir(tempdir):
207
217
os.unlink(tempdir)
208
218
os.mkdir(tempdir)
209
userdir = os.path.join(jail_src_base, user.login)
219
userdir = os.path.join(ivle.conf.jail_src_base, username)
210
220
homedir = os.path.join(userdir, 'home')
211
userhomedir = os.path.join(homedir, user.login) # Return value
221
userhomedir = os.path.join(homedir, username) # Return value
213
223
if os.path.exists(userdir):
220
230
warnings.simplefilter('ignore')
221
231
homebackup = os.tempnam(tempdir)
222
232
warnings.resetwarnings()
223
# Back up the /home directory, delete the entire jail, recreate the
224
# jail directory tree, then copy the /home back
225
# NOTE that shutil.move changed in Python 2.6, it now moves a
226
# directory INTO the target (like `mv`), which it didn't use to do.
227
# This code works regardless.
233
# Note: shutil.move does not behave like "mv" - it does not put a file
234
# into a directory if it already exists, just fails. Therefore it is
235
# not susceptible to tmpnam symlink attack.
228
236
shutil.move(homedir, homebackup)
229
237
shutil.rmtree(userdir)
231
239
shutil.move(homebackup, homedir)
232
240
# Change the ownership of all the files to the right unixid
233
241
logging.debug("chown %s's home directory files to uid %d"
234
%(user.login, user.unixid))
235
os.spawnvp(os.P_WAIT, 'chown', ['chown', '-R', '%d:%d' % (user.unixid,
236
user.unixid), userhomedir])
243
os.chown(userhomedir, uid, uid)
244
for root, dirs, files in os.walk(userhomedir):
245
for fsobj in dirs + files:
246
os.chown(os.path.join(root, fsobj), uid, uid)
238
248
# No user jail exists
239
249
# Set up the user's home directory
240
250
os.makedirs(userhomedir)
241
251
# Chown (and set the GID to the same as the UID).
242
os.chown(userhomedir, user.unixid, user.unixid)
252
os.chown(userhomedir, uid, uid)
243
253
# Chmod to rwxr-xr-x (755)
244
254
os.chmod(userhomedir, 0755)
246
make_ivle_conf(user.login, userdir, user.svn_pass, config)
247
make_etc_passwd(user.login, userdir, config['paths']['jails']['template'],
256
# There are 2 special files which need to be generated specific to this
257
# user: ${python_site_packages}/lib/conf/conf.py and /etc/passwd.
258
# "__" username "__" users are exempt (special)
259
if not (username.startswith("__") and username.endswith("__")):
260
make_conf_py(username, userdir, ivle.conf.jail_system, svn_pass)
261
make_etc_passwd(username, userdir, ivle.conf.jail_system, uid)
250
263
return userhomedir
252
def make_ivle_conf(username, user_jail_dir, svn_pass, sys_config):
265
def make_conf_py(username, user_jail_dir, staging_dir, svn_pass=None):
254
267
Creates (overwriting any existing file, and creating directories) a
255
file /etc/ivle/ivle.conf in a given user's jail.
256
@param username: Username.
257
@param user_jail_dir: User's jail dir, ie. ['jails']['src'] + username
258
@param svn_pass: User's SVN password.
259
@param sys_config: An ivle.config.Config object (the system-wide config).
268
file ${python_site_packages}/ivle/conf/conf.py in a given user's jail.
270
user_jail_dir: User's jail dir, ie. ivle.conf.jail_base + username
271
staging_dir: The dir with the staging copy of the jail. (With the
272
template conf.py file).
273
svn_pass: As with make_jail. User's SVN password, but if not supplied,
274
will look up in the DB.
261
conf_path = os.path.join(user_jail_dir, "etc/ivle/ivle.conf")
276
template_conf_path = os.path.join(staging_dir,
277
ivle.conf.python_site_packages[1:], "ivle/conf/conf.py")
278
conf_path = os.path.join(user_jail_dir,
279
ivle.conf.python_site_packages[1:], "ivle/conf/conf.py")
262
280
os.makedirs(os.path.dirname(conf_path))
264
# In the "in-jail" version of conf, we don't need MOST of the details
265
# (it would be a security risk to have them here).
266
# So we just write root_dir.
267
conf_obj = ivle.config.Config(blank=True)
268
conf_obj.filename = conf_path
269
conf_obj['urls']['root'] = sys_config['urls']['root']
270
conf_obj['urls']['public_host'] = sys_config['urls']['public_host']
271
conf_obj['urls']['svn_addr'] = sys_config['urls']['svn_addr']
272
conf_obj['user_info']['login'] = username
273
conf_obj['user_info']['svn_pass'] = svn_pass
282
# If svn_pass isn't supplied, grab it from the DB
284
dbconn = ivle.db.DB()
285
svn_pass = dbconn.get_user(username).svn_pass
288
# Read the contents of the template conf file
290
template_conf_file = open(template_conf_path, "r")
291
template_conf_data = template_conf_file.read()
292
template_conf_file.close()
294
# Couldn't open template conf.py for some reason
295
# Just treat it as empty file
296
template_conf_data = ("# Warning: Problem building config script.\n"
297
"# Could not find template conf.py file.\n")
299
conf_file = open(conf_path, "w")
300
conf_file.write(template_conf_data)
301
conf_file.write("\n# The login name for the owner of the jail\n")
302
conf_file.write("login = %s\n" % repr(username))
303
conf_file.write("\n")
304
conf_file.write("# The subversion-only password for the owner of "
306
conf_file.write("svn_pass = %s\n" % repr(svn_pass))
276
309
# Make this file world-readable
277
310
# (chmod 644 conf_path)
294
327
% (username, unixid, unixid, username))
295
328
passwd_file.close()
297
def mount_jail(login, config):
330
def make_user_db(throw_on_error = True, **kwargs):
331
"""Creates a user's entry in the database, filling in all the fields.
332
All arguments must be keyword args. They are the fields in the table.
333
However, instead of supplying a "passhash", you must supply a
334
"password" argument, which will be hashed internally.
335
Also do not supply a state. All users are created in the "no_agreement"
337
Also pulls the user's subjects using the configured subject pulldown
338
module, and adds enrolments to the DB.
339
Throws an exception if the user already exists.
341
dbconn = ivle.db.DB()
342
dbconn.create_user(**kwargs)
345
if kwargs['password']:
346
if os.path.exists(ivle.conf.svn_auth_local):
350
res = os.system("htpasswd -%smb %s %s %s" % (create,
351
ivle.conf.svn_auth_local,
354
if res != 0 and throw_on_error:
355
raise Exception("Unable to create local-auth for %s" % kwargs['login'])
357
# Make sure the file is owned by the web server
359
chown_to_webserver(ivle.conf.svn_auth_local)
361
# Pulldown subjects and add enrolments
362
ivle.pulldown_subj.enrol_user(kwargs['login'])
364
def mount_jail(login):
298
365
# This is where we'll mount to...
299
destdir = os.path.join(config['paths']['jails']['mounts'], login)
366
destdir = os.path.join(ivle.conf.jail_base, login)
300
367
# ... and this is where we'll get the user bits.
301
srcdir = os.path.join(config['paths']['jails']['src'], login)
368
srcdir = os.path.join(ivle.conf.jail_src_base, login)
303
370
if not os.path.exists(destdir):
304
371
os.mkdir(destdir)
305
372
if os.system('/bin/mount -t aufs -o dirs=%s:%s=ro none %s'
306
% (srcdir, config['paths']['jails']['template'],
373
% (srcdir, ivle.conf.jail_system, destdir)) == 0:
308
374
logging.info("mounted user %s's jail." % login)
310
376
logging.error("failed to mount user %s's jail!" % login)