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)
82
# TODO: Populate groups with per-offering tutors/lecturers/etc.
83
f = open(ivle.conf.svn_conf + ".new", "w")
84
f.write("# IVLE SVN Repositories Configuration\n")
85
f.write("# Auto-generated on %s\n" % time.asctime())
88
for (g,ls) in groups.iteritems():
89
f.write("%s = %s\n" % (g, ",".join(ls)))
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()})
92
f.write("[%s:/]\n" % u.login)
93
f.write("%s = rw\n" % u.login)
94
#f.write("@tutor = r\n")
95
#f.write("@lecturer = rw\n")
96
#f.write("@admin = rw\n")
75
""" % {'login': u.login.encode('utf-8')})
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.offering_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.encode('utf-8'), 'id': psid,
114
'path': pspath.encode('utf-8')})
116
for viewer_login in offering_viewers_cache[offeringid]:
117
# We don't want to override the owner's write privilege,
118
# so we don't add them to the read-only ACL.
119
if login != viewer_login:
120
f.write("%s = r\n" % viewer_login.encode('utf-8'))
99
os.rename(ivle.conf.svn_conf + ".new", ivle.conf.svn_conf)
100
chown_to_webserver(ivle.conf.svn_conf)
123
os.rename(temp_name, conf_name)
124
chown_to_webserver(conf_name)
102
def rebuild_svn_group_config(store):
126
def rebuild_svn_group_config(store, config):
103
127
"""Build the complete SVN configuration file for groups
129
@param config: An ivle.config.Config object.
105
f = open(ivle.conf.svn_group_conf + ".new", "w")
106
f.write("# IVLE SVN Group Repositories Configuration\n")
107
f.write("# Auto-generated on %s\n" % time.asctime())
131
conf_name = config['paths']['svn']['group_conf']
132
temp_name = conf_name + ".new"
133
f = open(temp_name, "w")
136
# IVLE SVN group repository authorisation configuration
137
# Generated: %(time)s
139
""" % {'time': time.asctime()})
141
group_members_cache = {}
109
142
for group in store.find(ProjectGroup):
110
143
offering = group.project_set.offering
111
144
reponame = "_".join([offering.subject.short_name,
112
145
offering.semester.year,
113
146
offering.semester.semester,
115
f.write("[%s:/]\n"%reponame)
149
f.write("[%s:/]\n" % reponame.encode('utf-8'))
150
if group.id not in group_members_cache:
151
group_members_cache[group.id] = set()
116
152
for user in group.members:
117
f.write("%s = rw\n" % user.login)
153
group_members_cache[group.id].add(user.login)
154
f.write("%s = rw\n" % user.login.encode('utf-8'))
157
# Now we need to grant offering tutors and lecturers access to the latest
158
# submissions in their offerings. There are much prettier ways to do this,
159
# but a lot of browser requests call this function, so it needs to be
160
# fast. We can grab all of the paths needing authorisation directives with
161
# a single query, and we cache the list of viewers for each offering.
162
offering_viewers_cache = {}
163
for (ssn, year, sem, name, psid, pspath, gid, offeringid) in store.find(
164
(Subject.short_name, Semester.year, Semester.semester,
165
ProjectGroup.name, ProjectSubmission.id, ProjectSubmission.path,
166
ProjectGroup.id, Offering.id),
167
Assessed.id == ProjectSubmission.assessed_id,
168
ProjectGroup.id == Assessed.project_group_id,
169
Project.id == Assessed.project_id,
170
ProjectSet.id == Project.project_set_id,
171
Offering.id == ProjectSet.offering_id,
172
Subject.id == Offering.subject_id,
173
Semester.id == Offering.semester_id,
174
ProjectSubmission.date_submitted == Select(
175
Max(ProjectSubmission.date_submitted),
176
ProjectSubmission.assessed_id == Assessed.id,
177
tables=ProjectSubmission
181
reponame = "_".join([ssn, year, sem, name])
183
# Do we already have the list of logins authorised for this offering
184
# cached? If not, get it.
185
if offeringid not in offering_viewers_cache:
186
offering_viewers_cache[offeringid] = list(store.find(
188
User.id == Enrolment.user_id,
189
Enrolment.offering_id == offeringid,
190
Enrolment.role.is_in((u'tutor', u'lecturer')),
191
Enrolment.active == True,
198
""" % {'repo': reponame.encode('utf-8'), 'id': psid,
199
'path': pspath.encode('utf-8')})
201
for viewer_login in offering_viewers_cache[offeringid]:
202
# Skip existing group members, or they can't write to it any more.
203
if viewer_login not in group_members_cache[gid]:
204
f.write("%s = r\n" % viewer_login)
120
os.rename(ivle.conf.svn_group_conf + ".new", ivle.conf.svn_group_conf)
121
chown_to_webserver(ivle.conf.svn_group_conf)
123
def make_svn_auth(store, login, throw_on_error=True):
124
"""Setup svn authentication for the given user.
125
Uses the given DB store object. Does not commit to the db.
207
os.rename(temp_name, conf_name)
208
chown_to_webserver(conf_name)
210
def make_svn_auth(store, login, config, throw_on_error=True):
211
"""Create a Subversion password for a user.
213
Generates a new random Subversion password, and assigns it to the user.
214
The password is added to Apache's Subversion authentication file.
127
passwd = md5.new(uuid.uuid4().bytes).digest().encode('hex')
128
if os.path.exists(ivle.conf.svn_auth_ivle):
216
# filename is, eg, /var/lib/ivle/svn/ivle.auth
217
filename = config['paths']['svn']['auth_ivle']
218
if os.path.exists(filename):
133
user = ivle.database.User.get_by_login(store, login)
134
user.svn_pass = unicode(passwd)
136
res = os.system("htpasswd -%smb %s %s %s" % (create,
137
ivle.conf.svn_auth_ivle,
223
user = User.get_by_login(store, login)
225
if user.svn_pass is None:
226
passwd = hashlib.md5(uuid.uuid4().bytes).hexdigest()
227
user.svn_pass = unicode(passwd)
229
res = subprocess.call(['htpasswd', '-%smb' % create,
230
filename, login, user.svn_pass])
139
231
if res != 0 and throw_on_error:
140
232
raise Exception("Unable to create ivle-auth for %s" % login)
142
234
# Make sure the file is owned by the web server
143
235
if create == "c":
144
chown_to_webserver(ivle.conf.svn_auth_ivle)
148
def generate_manifest(basedir, targetdir, parent=''):
149
""" From a basedir and a targetdir work out which files are missing or out
150
of date and need to be added/updated and which files are redundant and need
153
parent: This is used for the recursive call to track the relative paths
154
that we have decended.
157
cmp = filecmp.dircmp(basedir, targetdir)
159
# Add all new files and files that have changed
160
to_add = [os.path.join(parent,x) for x in (cmp.left_only + cmp.diff_files)]
162
# Remove files that are redundant
163
to_remove = [os.path.join(parent,x) for x in cmp.right_only]
166
for d in cmp.common_dirs:
167
newbasedir = os.path.join(basedir, d)
168
newtargetdir = os.path.join(targetdir, d)
169
newparent = os.path.join(parent, d)
170
(sadd,sremove) = generate_manifest(newbasedir, newtargetdir, newparent)
174
return (to_add, to_remove)
177
def make_jail(user, force=True):
178
"""Creates a new user's jail space, in the jail directory as configured in
181
This only creates things within /home - everything else is expected to be
182
part of another UnionFS branch.
236
chown_to_webserver(filename)
240
def make_jail(user, config, force=True):
241
"""Create or update a user's jail.
243
Only the user-specific parts of the jail are created here - everything
244
else is expected to be part of another aufs branch.
184
246
Returns the path to the user's home directory.
186
248
Chowns the user's directory within the jail to the given UID.
188
force: If false, exception if jail already exists for this user.
189
If true (default), overwrites it, but preserves home directory.
250
@param force: If False, raise an exception if the user already has a jail.
251
If True (default), rebuild the jail preserving /home.
191
253
# MUST run as root or some of this may fail
192
254
if os.getuid() != 0:
193
255
raise Exception("Must run make_jail as root")
195
257
# tempdir is for putting backup homes in
196
tempdir = os.path.join(ivle.conf.jail_base, '__temp__')
258
jail_src_base = config['paths']['jails']['src']
259
tempdir = os.path.join(jail_src_base, '__temp__')
197
260
if not os.path.exists(tempdir):
198
261
os.makedirs(tempdir)
199
262
elif not os.path.isdir(tempdir):
200
263
os.unlink(tempdir)
201
264
os.mkdir(tempdir)
202
userdir = os.path.join(ivle.conf.jail_src_base, user.login)
265
userdir = os.path.join(jail_src_base, user.login)
203
266
homedir = os.path.join(userdir, 'home')
267
tmpdir = os.path.join(userdir, 'tmp')
204
268
userhomedir = os.path.join(homedir, user.login) # Return value
206
270
if os.path.exists(userdir):
236
300
# Chmod to rwxr-xr-x (755)
237
301
os.chmod(userhomedir, 0755)
239
make_conf_py(user.login, userdir, user.svn_pass)
240
make_etc_passwd(user.login, userdir, ivle.conf.jail_system, user.unixid)
303
make_ivle_conf(user.login, userdir, user.svn_pass, config)
304
make_etc_passwd(user.login, userdir, config['paths']['jails']['template'],
307
os.chmod(tmpdir, 01777)
242
309
return userhomedir
244
def make_conf_py(username, user_jail_dir, svn_pass):
311
def make_ivle_conf(username, user_jail_dir, svn_pass, sys_config):
312
"""Generate an ivle.conf for a user's jail.
246
314
Creates (overwriting any existing file, and creating directories) a
247
file ${python_site_packages}/ivle/conf/conf.py in a given user's jail.
249
user_jail_dir: User's jail dir, ie. ivle.conf.jail_base + username
250
svn_pass: User's SVN password.
315
file /etc/ivle/ivle.conf in a given user's jail.
317
@param username: Username.
318
@param user_jail_dir: User's jail dir, ie. ['jails']['src'] + username
319
@param svn_pass: User's SVN password.
320
@param sys_config: An ivle.config.Config object (the system-wide config).
252
conf_path = os.path.join(user_jail_dir,
253
ivle.conf.python_site_packages[1:], "ivle/conf/conf.py")
254
os.makedirs(os.path.dirname(conf_path))
322
conf_path = os.path.join(user_jail_dir, "home/.ivle.conf")
323
if not os.path.exists(os.path.dirname(conf_path)):
324
os.makedirs(os.path.dirname(conf_path))
256
326
# In the "in-jail" version of conf, we don't need MOST of the details
257
327
# (it would be a security risk to have them here).
258
# So we just write root_dir, and jail_base is "/".
259
# (jail_base being "/" means "jail-relative" paths are relative to "/"
260
# when inside the jail.)
262
# XXX: jail_base is wrong and shouldn't be here. Unfortunately, jail code
263
# uses ivle.studpath.url_to_{local,jailpaths}, both of which use
264
# jail_base. Note that they don't use the bits of the return value
265
# that depend on jail_base, so it can be any string.
266
conf_file = open(conf_path, "w")
267
conf_file.write("""# IVLE jail configuration
269
# In URL space, where in the site is IVLE located. (All URLs will be prefixed
271
# eg. "/" or "/ivle".
272
root_dir = %(root_dir)r
274
# This value is not relevant inside the jail, but must remain for now. See
275
# the XXX in ivle.makeuser.make_conf_py.
278
# The hostname for serving publicly accessible pages
279
public_host = %(public_host)r
281
# The URL under which the Subversion repositories are located.
282
svn_addr = %(svn_addr)r
284
# The login name for the owner of the jail
287
# The subversion-only password for the owner of the jail
288
svn_pass = %(svn_pass)r
289
""" % {'root_dir': ivle.conf.root_dir,
290
'public_host': ivle.conf.public_host,
291
'svn_addr': ivle.conf.svn_addr,
292
'username': username,
293
'svn_pass': svn_pass,
328
# So we just write root_dir.
329
conf_obj = ivle.config.Config(blank=True)
330
conf_obj.filename = conf_path
331
conf_obj['urls'] = {}
332
conf_obj['urls']['root'] = sys_config['urls']['root']
333
conf_obj['urls']['public_host'] = sys_config['urls']['public_host']
334
conf_obj['urls']['svn_addr'] = sys_config['urls']['svn_addr']
335
conf_obj['user_info'] = {}
336
conf_obj['user_info']['login'] = username
337
conf_obj['user_info']['svn_pass'] = svn_pass
297
340
# Make this file world-readable
298
341
# (chmod 644 conf_path)