74
55
chown_to_webserver(path)
76
def rebuild_svn_config(store):
57
def rebuild_svn_config(store, config):
77
58
"""Build the complete SVN configuration file.
60
@param config: An ivle.config.Config object.
79
users = store.find(ivle.database.User)
83
if role not in groups:
85
groups[role].append(u.login)
86
f = open(ivle.conf.svn_conf + ".new", "w")
87
f.write("# IVLE SVN Repositories Configuration\n")
88
f.write("# Auto-generated on %s\n" % time.asctime())
91
for (g,ls) in groups.iteritems():
92
f.write("%s = %s\n" % (g, ",".join(ls)))
95
f.write("[%s:/]\n" % u.login)
96
f.write("%s = rw\n" % u.login)
97
#f.write("@tutor = r\n")
98
#f.write("@lecturer = rw\n")
99
#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.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'))
102
os.rename(ivle.conf.svn_conf + ".new", ivle.conf.svn_conf)
103
chown_to_webserver(ivle.conf.svn_conf)
123
os.rename(temp_name, conf_name)
124
chown_to_webserver(conf_name)
105
def rebuild_svn_group_config(store):
126
def rebuild_svn_group_config(store, config):
106
127
"""Build the complete SVN configuration file for groups
129
@param config: An ivle.config.Config object.
109
groups = conn.get_all('project_group',
110
['groupid', 'groupnm', 'projectsetid'])
111
f = open(ivle.conf.svn_group_conf + ".new", "w")
112
f.write("# IVLE SVN Group Repositories Configuration\n")
113
f.write("# Auto-generated on %s\n" % time.asctime())
116
projectsetid = g['projectsetid']
117
offeringinfo = conn.get_offering_info(projectsetid)
118
subj_short_name = offeringinfo['subj_short_name']
119
year = offeringinfo['year']
120
semester = offeringinfo['semester']
121
reponame = "_".join([subj_short_name, year, semester, g['groupnm']])
122
f.write("[%s:/]\n"%reponame)
123
users = conn.get_projectgroup_members(g['groupid'])
125
f.write("%s = rw\n"%u['login'])
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 = {}
142
for group in store.find(ProjectGroup):
143
offering = group.project_set.offering
144
reponame = "_".join([offering.subject.short_name,
145
offering.semester.year,
146
offering.semester.url_name,
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()
152
for user in group.members:
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.url_name,
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)
128
os.rename(ivle.conf.svn_group_conf + ".new", ivle.conf.svn_group_conf)
129
chown_to_webserver(ivle.conf.svn_group_conf)
131
def make_svn_auth(store, login, throw_on_error=True):
132
"""Setup svn authentication for the given user.
133
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.
135
passwd = md5.new(uuid.uuid4().bytes).digest().encode('hex')
136
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):
141
user = ivle.database.User.get_by_login(store, login)
142
user.svn_pass = unicode(passwd)
144
res = os.system("htpasswd -%smb %s %s %s" % (create,
145
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])
147
231
if res != 0 and throw_on_error:
148
232
raise Exception("Unable to create ivle-auth for %s" % login)
150
234
# Make sure the file is owned by the web server
151
235
if create == "c":
152
chown_to_webserver(ivle.conf.svn_auth_ivle)
156
def generate_manifest(basedir, targetdir, parent=''):
157
""" From a basedir and a targetdir work out which files are missing or out
158
of date and need to be added/updated and which files are redundant and need
161
parent: This is used for the recursive call to track the relative paths
162
that we have decended.
165
cmp = filecmp.dircmp(basedir, targetdir)
167
# Add all new files and files that have changed
168
to_add = [os.path.join(parent,x) for x in (cmp.left_only + cmp.diff_files)]
170
# Remove files that are redundant
171
to_remove = [os.path.join(parent,x) for x in cmp.right_only]
174
for d in cmp.common_dirs:
175
newbasedir = os.path.join(basedir, d)
176
newtargetdir = os.path.join(targetdir, d)
177
newparent = os.path.join(parent, d)
178
(sadd,sremove) = generate_manifest(newbasedir, newtargetdir, newparent)
182
return (to_add, to_remove)
185
def make_jail(user, force=True):
186
"""Creates a new user's jail space, in the jail directory as configured in
189
This only creates things within /home - everything else is expected to be
190
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.
192
246
Returns the path to the user's home directory.
194
248
Chowns the user's directory within the jail to the given UID.
196
force: If false, exception if jail already exists for this user.
197
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.
199
253
# MUST run as root or some of this may fail
200
254
if os.getuid() != 0:
201
255
raise Exception("Must run make_jail as root")
203
257
# tempdir is for putting backup homes in
204
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__')
205
260
if not os.path.exists(tempdir):
206
261
os.makedirs(tempdir)
207
262
elif not os.path.isdir(tempdir):
208
263
os.unlink(tempdir)
209
264
os.mkdir(tempdir)
210
userdir = os.path.join(ivle.conf.jail_src_base, user.login)
265
userdir = os.path.join(jail_src_base, user.login)
211
266
homedir = os.path.join(userdir, 'home')
267
tmpdir = os.path.join(userdir, 'tmp')
212
268
userhomedir = os.path.join(homedir, user.login) # Return value
214
270
if os.path.exists(userdir):
244
300
# Chmod to rwxr-xr-x (755)
245
301
os.chmod(userhomedir, 0755)
247
make_conf_py(user.login, userdir, ivle.conf.jail_system, user.svn_pass)
248
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)
250
309
return userhomedir
252
def make_conf_py(username, user_jail_dir, staging_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.
254
314
Creates (overwriting any existing file, and creating directories) a
255
file ${python_site_packages}/ivle/conf/conf.py in a given user's jail.
257
user_jail_dir: User's jail dir, ie. ivle.conf.jail_base + username
258
staging_dir: The dir with the staging copy of the jail. (With the
259
template conf.py file).
260
svn_pass: As with make_jail. User's SVN password, but if not supplied,
261
will look up in the DB.
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).
263
template_conf_path = os.path.join(staging_dir,
264
ivle.conf.python_site_packages[1:], "ivle/conf/conf.py")
265
conf_path = os.path.join(user_jail_dir,
266
ivle.conf.python_site_packages[1:], "ivle/conf/conf.py")
267
os.makedirs(os.path.dirname(conf_path))
269
# Read the contents of the template conf file
271
template_conf_file = open(template_conf_path, "r")
272
template_conf_data = template_conf_file.read()
273
template_conf_file.close()
275
# Couldn't open template conf.py for some reason
276
# Just treat it as empty file
277
template_conf_data = ("# Warning: Problem building config script.\n"
278
"# Could not find template conf.py file.\n")
280
conf_file = open(conf_path, "w")
281
conf_file.write(template_conf_data)
282
conf_file.write("\n# The login name for the owner of the jail\n")
283
conf_file.write("login = %s\n" % repr(username))
284
conf_file.write("\n")
285
conf_file.write("# The subversion-only password for the owner of "
287
conf_file.write("svn_pass = %s\n" % repr(svn_pass))
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))
326
# In the "in-jail" version of conf, we don't need MOST of the details
327
# (it would be a security risk to have them here).
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
290
340
# Make this file world-readable
291
341
# (chmod 644 conf_path)