75
55
chown_to_webserver(path)
77
def rebuild_svn_config(store):
57
def rebuild_svn_config(store, config):
78
58
"""Build the complete SVN configuration file.
60
@param config: An ivle.config.Config object.
80
users = store.find(ivle.database.User)
84
if role not in groups:
86
groups[role].append(u.login)
87
f = open(ivle.conf.svn_conf + ".new", "w")
88
f.write("# IVLE SVN Repositories Configuration\n")
89
f.write("# Auto-generated on %s\n" % time.asctime())
92
for (g,ls) in groups.iteritems():
93
f.write("%s = %s\n" % (g, ",".join(ls)))
96
f.write("[%s:/]\n" % u.login)
97
f.write("%s = rw\n" % u.login)
98
#f.write("@tutor = r\n")
99
#f.write("@lecturer = rw\n")
100
#f.write("@admin = rw\n")
62
users = store.find(User)
63
conf_name = config['paths']['svn']['conf']
64
temp_name = conf_name + ".new"
65
f = open(temp_name, "w")
67
# IVLE SVN repository authorisation configuration
69
""" % {'time': time.asctime()})
75
""" % {'login': u.login})
77
# Now we need to grant offering tutors and lecturers access to the latest
78
# submissions in their offerings. There are much prettier ways to do this,
79
# but a lot of browser requests call this function, so it needs to be
80
# fast. We can grab all of the paths needing authorisation directives with
81
# a single query, and we cache the list of viewers for each offering.
82
offering_viewers_cache = {}
83
for (login, psid, pspath, offeringid) in store.find(
84
(User.login, ProjectSubmission.id, ProjectSubmission.path,
86
Assessed.id == ProjectSubmission.assessed_id,
87
User.id == Assessed.user_id,
88
Project.id == Assessed.project_id,
89
ProjectSet.id == Project.project_set_id,
90
Offering.id == ProjectSet.id,
91
ProjectSubmission.date_submitted == Select(
92
Max(ProjectSubmission.date_submitted),
93
ProjectSubmission.assessed_id == Assessed.id,
94
tables=ProjectSubmission
98
# Do we already have the list of logins authorised for this offering
99
# cached? If not, get it.
100
if offeringid not in offering_viewers_cache:
101
offering_viewers_cache[offeringid] = list(store.find(
103
User.id == Enrolment.user_id,
104
Enrolment.offering_id == offeringid,
105
Enrolment.role.is_in((u'tutor', u'lecturer')),
106
Enrolment.active == True,
113
""" % {'login': login, 'id': psid, 'path': pspath})
115
for viewer_login in offering_viewers_cache[offeringid]:
116
# We don't want to override the owner's write privilege,
117
# so we don't add them to the read-only ACL.
118
if login != viewer_login:
119
f.write("%s = r\n" % viewer_login)
103
os.rename(ivle.conf.svn_conf + ".new", ivle.conf.svn_conf)
104
chown_to_webserver(ivle.conf.svn_conf)
122
os.rename(temp_name, conf_name)
123
chown_to_webserver(conf_name)
106
def rebuild_svn_group_config(store):
125
def rebuild_svn_group_config(store, config):
107
126
"""Build the complete SVN configuration file for groups
128
@param config: An ivle.config.Config object.
109
f = open(ivle.conf.svn_group_conf + ".new", "w")
110
f.write("# IVLE SVN Group Repositories Configuration\n")
111
f.write("# Auto-generated on %s\n" % time.asctime())
130
conf_name = config['paths']['svn']['group_conf']
131
temp_name = conf_name + ".new"
132
f = open(temp_name, "w")
135
# IVLE SVN group repository authorisation configuration
136
# Generated: %(time)s
138
""" % {'time': time.asctime()})
140
group_members_cache = {}
113
141
for group in store.find(ProjectGroup):
114
142
offering = group.project_set.offering
115
143
reponame = "_".join([offering.subject.short_name,
116
144
offering.semester.year,
117
145
offering.semester.semester,
119
f.write("[%s:/]\n"%reponame)
148
f.write("[%s:/]\n" % reponame)
149
if group.id not in group_members_cache:
150
group_members_cache[group.id] = set()
120
151
for user in group.members:
152
group_members_cache[group.id].add(user.login)
121
153
f.write("%s = rw\n" % user.login)
156
# Now we need to grant offering tutors and lecturers access to the latest
157
# submissions in their offerings. There are much prettier ways to do this,
158
# but a lot of browser requests call this function, so it needs to be
159
# fast. We can grab all of the paths needing authorisation directives with
160
# a single query, and we cache the list of viewers for each offering.
161
offering_viewers_cache = {}
162
for (ssn, year, sem, name, psid, pspath, gid, offeringid) in store.find(
163
(Subject.short_name, Semester.year, Semester.semester,
164
ProjectGroup.name, ProjectSubmission.id, ProjectSubmission.path,
165
ProjectGroup.id, Offering.id),
166
Assessed.id == ProjectSubmission.assessed_id,
167
ProjectGroup.id == Assessed.project_group_id,
168
Project.id == Assessed.project_id,
169
ProjectSet.id == Project.project_set_id,
170
Offering.id == ProjectSet.offering_id,
171
Subject.id == Offering.subject_id,
172
Semester.id == Offering.semester_id,
173
ProjectSubmission.date_submitted == Select(
174
Max(ProjectSubmission.date_submitted),
175
ProjectSubmission.assessed_id == Assessed.id,
176
tables=ProjectSubmission
180
reponame = "_".join([ssn, year, sem, name])
182
# Do we already have the list of logins authorised for this offering
183
# cached? If not, get it.
184
if offeringid not in offering_viewers_cache:
185
offering_viewers_cache[offeringid] = list(store.find(
187
User.id == Enrolment.user_id,
188
Enrolment.offering_id == offeringid,
189
Enrolment.role.is_in((u'tutor', u'lecturer')),
190
Enrolment.active == True,
197
""" % {'repo': reponame, 'id': psid, 'path': pspath})
199
for viewer_login in offering_viewers_cache[offeringid]:
200
# Skip existing group members, or they can't write to it any more.
201
if viewer_login not in group_members_cache[gid]:
202
f.write("%s = r\n" % viewer_login)
124
os.rename(ivle.conf.svn_group_conf + ".new", ivle.conf.svn_group_conf)
125
chown_to_webserver(ivle.conf.svn_group_conf)
127
def make_svn_auth(store, login, throw_on_error=True):
128
"""Setup svn authentication for the given user.
129
Uses the given DB store object. Does not commit to the db.
205
os.rename(temp_name, conf_name)
206
chown_to_webserver(conf_name)
208
def make_svn_auth(store, login, config, throw_on_error=True):
209
"""Create a Subversion password for a user.
211
Generates a new random Subversion password, and assigns it to the user.
212
The password is added to Apache's Subversion authentication file.
131
passwd = md5.new(uuid.uuid4().bytes).digest().encode('hex')
132
if os.path.exists(ivle.conf.svn_auth_ivle):
214
# filename is, eg, /var/lib/ivle/svn/ivle.auth
215
filename = config['paths']['svn']['auth_ivle']
216
if os.path.exists(filename):
137
user = ivle.database.User.get_by_login(store, login)
138
user.svn_pass = unicode(passwd)
140
res = os.system("htpasswd -%smb %s %s %s" % (create,
141
ivle.conf.svn_auth_ivle,
221
user = User.get_by_login(store, login)
223
if user.svn_pass is None:
224
passwd = hashlib.md5(uuid.uuid4().bytes).hexdigest()
225
user.svn_pass = unicode(passwd)
227
res = subprocess.call(['htpasswd', '-%smb' % create,
228
filename, login, user.svn_pass])
143
229
if res != 0 and throw_on_error:
144
230
raise Exception("Unable to create ivle-auth for %s" % login)
146
232
# Make sure the file is owned by the web server
147
233
if create == "c":
148
chown_to_webserver(ivle.conf.svn_auth_ivle)
152
def generate_manifest(basedir, targetdir, parent=''):
153
""" From a basedir and a targetdir work out which files are missing or out
154
of date and need to be added/updated and which files are redundant and need
157
parent: This is used for the recursive call to track the relative paths
158
that we have decended.
161
cmp = filecmp.dircmp(basedir, targetdir)
163
# Add all new files and files that have changed
164
to_add = [os.path.join(parent,x) for x in (cmp.left_only + cmp.diff_files)]
166
# Remove files that are redundant
167
to_remove = [os.path.join(parent,x) for x in cmp.right_only]
170
for d in cmp.common_dirs:
171
newbasedir = os.path.join(basedir, d)
172
newtargetdir = os.path.join(targetdir, d)
173
newparent = os.path.join(parent, d)
174
(sadd,sremove) = generate_manifest(newbasedir, newtargetdir, newparent)
178
return (to_add, to_remove)
181
def make_jail(user, force=True):
182
"""Creates a new user's jail space, in the jail directory as configured in
185
This only creates things within /home - everything else is expected to be
186
part of another UnionFS branch.
234
chown_to_webserver(filename)
238
def make_jail(user, config, force=True):
239
"""Create or update a user's jail.
241
Only the user-specific parts of the jail are created here - everything
242
else is expected to be part of another aufs branch.
188
244
Returns the path to the user's home directory.
190
246
Chowns the user's directory within the jail to the given UID.
192
force: If false, exception if jail already exists for this user.
193
If true (default), overwrites it, but preserves home directory.
248
@param force: If False, raise an exception if the user already has a jail.
249
If True (default), rebuild the jail preserving /home.
195
251
# MUST run as root or some of this may fail
196
252
if os.getuid() != 0:
197
253
raise Exception("Must run make_jail as root")
199
255
# tempdir is for putting backup homes in
200
tempdir = os.path.join(ivle.conf.jail_base, '__temp__')
256
jail_src_base = config['paths']['jails']['src']
257
tempdir = os.path.join(jail_src_base, '__temp__')
201
258
if not os.path.exists(tempdir):
202
259
os.makedirs(tempdir)
203
260
elif not os.path.isdir(tempdir):
204
261
os.unlink(tempdir)
205
262
os.mkdir(tempdir)
206
userdir = os.path.join(ivle.conf.jail_src_base, user.login)
263
userdir = os.path.join(jail_src_base, user.login)
207
264
homedir = os.path.join(userdir, 'home')
265
tmpdir = os.path.join(userdir, 'tmp')
208
266
userhomedir = os.path.join(homedir, user.login) # Return value
210
268
if os.path.exists(userdir):
240
298
# Chmod to rwxr-xr-x (755)
241
299
os.chmod(userhomedir, 0755)
243
make_conf_py(user.login, userdir, user.svn_pass)
244
make_etc_passwd(user.login, userdir, ivle.conf.jail_system, user.unixid)
301
make_ivle_conf(user.login, userdir, user.svn_pass, config)
302
make_etc_passwd(user.login, userdir, config['paths']['jails']['template'],
305
os.chmod(tmpdir, 01777)
246
307
return userhomedir
248
def make_conf_py(username, user_jail_dir, svn_pass):
309
def make_ivle_conf(username, user_jail_dir, svn_pass, sys_config):
310
"""Generate an ivle.conf for a user's jail.
250
312
Creates (overwriting any existing file, and creating directories) a
251
file ${python_site_packages}/ivle/conf/conf.py in a given user's jail.
253
user_jail_dir: User's jail dir, ie. ivle.conf.jail_base + username
254
svn_pass: User's SVN password.
313
file /etc/ivle/ivle.conf in a given user's jail.
315
@param username: Username.
316
@param user_jail_dir: User's jail dir, ie. ['jails']['src'] + username
317
@param svn_pass: User's SVN password.
318
@param sys_config: An ivle.config.Config object (the system-wide config).
256
conf_path = os.path.join(user_jail_dir,
257
ivle.conf.python_site_packages[1:], "ivle/conf/conf.py")
258
os.makedirs(os.path.dirname(conf_path))
320
conf_path = os.path.join(user_jail_dir, "home/.ivle.conf")
321
if not os.path.exists(os.path.dirname(conf_path)):
322
os.makedirs(os.path.dirname(conf_path))
260
324
# In the "in-jail" version of conf, we don't need MOST of the details
261
325
# (it would be a security risk to have them here).
262
# So we just write root_dir, and jail_base is "/".
263
# (jail_base being "/" means "jail-relative" paths are relative to "/"
264
# when inside the jail.)
266
# XXX: jail_base is wrong and shouldn't be here. Unfortunately, jail code
267
# uses ivle.studpath.url_to_{local,jailpaths}, both of which use
268
# jail_base. Note that they don't use the bits of the return value
269
# that depend on jail_base, so it can be any string.
270
conf_file = open(conf_path, "w")
271
conf_file.write("""# IVLE jail configuration
273
# In URL space, where in the site is IVLE located. (All URLs will be prefixed
275
# eg. "/" or "/ivle".
276
root_dir = %(root_dir)r
278
# This value is not relevant inside the jail, but must remain for now. See
279
# the XXX in ivle.makeuser.make_conf_py.
282
# The hostname for serving publicly accessible pages
283
public_host = %(public_host)r
285
# The URL under which the Subversion repositories are located.
286
svn_addr = %(svn_addr)r
288
# The login name for the owner of the jail
291
# The subversion-only password for the owner of the jail
292
svn_pass = %(svn_pass)r
293
""" % {'root_dir': ivle.conf.root_dir,
294
'public_host': ivle.conf.public_host,
295
'svn_addr': ivle.conf.svn_addr,
296
'username': username,
297
'svn_pass': svn_pass,
326
# So we just write root_dir.
327
conf_obj = ivle.config.Config(blank=True)
328
conf_obj.filename = conf_path
329
conf_obj['urls']['root'] = sys_config['urls']['root']
330
conf_obj['urls']['public_host'] = sys_config['urls']['public_host']
331
conf_obj['urls']['svn_addr'] = sys_config['urls']['svn_addr']
332
conf_obj['user_info']['login'] = username
333
conf_obj['user_info']['svn_pass'] = svn_pass
301
336
# Make this file world-readable
302
337
# (chmod 644 conf_path)