57
76
def rebuild_svn_config(store, config):
58
77
"""Build the complete SVN configuration file.
60
78
@param config: An ivle.config.Config object.
62
users = store.find(User)
80
users = store.find(ivle.database.User)
82
# TODO: Populate groups with per-offering tutors/lecturers/etc.
63
83
conf_name = config['paths']['svn']['conf']
64
84
temp_name = conf_name + ".new"
65
85
f = open(temp_name, "w")
67
# IVLE SVN repository authorisation configuration
69
""" % {'time': time.asctime()})
86
f.write("# IVLE SVN Repositories Configuration\n")
87
f.write("# Auto-generated on %s\n" % time.asctime())
90
for (g,ls) in groups.iteritems():
91
f.write("%s = %s\n" % (g, ",".join(ls)))
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.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'))
94
f.write("[%s:/]\n" % u.login)
95
f.write("%s = rw\n" % u.login)
96
#f.write("@tutor = r\n")
97
#f.write("@lecturer = rw\n")
98
#f.write("@admin = rw\n")
123
101
os.rename(temp_name, conf_name)
124
102
chown_to_webserver(conf_name)
126
104
def rebuild_svn_group_config(store, config):
127
105
"""Build the complete SVN configuration file for groups
129
106
@param config: An ivle.config.Config object.
131
108
conf_name = config['paths']['svn']['group_conf']
132
109
temp_name = conf_name + ".new"
133
110
f = open(temp_name, "w")
136
# IVLE SVN group repository authorisation configuration
137
# Generated: %(time)s
139
""" % {'time': time.asctime()})
141
group_members_cache = {}
111
f.write("# IVLE SVN Group Repositories Configuration\n")
112
f.write("# Auto-generated on %s\n" % time.asctime())
142
114
for group in store.find(ProjectGroup):
143
115
offering = group.project_set.offering
144
116
reponame = "_".join([offering.subject.short_name,
145
117
offering.semester.year,
146
118
offering.semester.semester,
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()
120
f.write("[%s:/]\n"%reponame)
152
121
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'))
122
f.write("%s = rw\n" % user.login)
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)
207
125
os.rename(temp_name, conf_name)
208
126
chown_to_webserver(conf_name)
210
128
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.
129
"""Setup svn authentication for the given user.
130
Uses the given DB store object. Does not commit to the db.
216
132
# filename is, eg, /var/lib/ivle/svn/ivle.auth
217
133
filename = config['paths']['svn']['auth_ivle']
134
passwd = hashlib.md5(uuid.uuid4().bytes).hexdigest()
218
135
if os.path.exists(filename):
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])
140
user = ivle.database.User.get_by_login(store, login)
141
user.svn_pass = unicode(passwd)
143
res = os.system("htpasswd -%smb %s %s %s" % (create, filename,
231
145
if res != 0 and throw_on_error:
232
146
raise Exception("Unable to create ivle-auth for %s" % login)
235
149
if create == "c":
236
150
chown_to_webserver(filename)
154
def generate_manifest(basedir, targetdir, parent=''):
155
""" From a basedir and a targetdir work out which files are missing or out
156
of date and need to be added/updated and which files are redundant and need
159
parent: This is used for the recursive call to track the relative paths
160
that we have decended.
163
cmp = filecmp.dircmp(basedir, targetdir)
165
# Add all new files and files that have changed
166
to_add = [os.path.join(parent,x) for x in (cmp.left_only + cmp.diff_files)]
168
# Remove files that are redundant
169
to_remove = [os.path.join(parent,x) for x in cmp.right_only]
172
for d in cmp.common_dirs:
173
newbasedir = os.path.join(basedir, d)
174
newtargetdir = os.path.join(targetdir, d)
175
newparent = os.path.join(parent, d)
176
(sadd,sremove) = generate_manifest(newbasedir, newtargetdir, newparent)
180
return (to_add, to_remove)
240
183
def make_jail(user, config, force=True):
241
"""Create or update a user's jail.
184
"""Creates a new user's jail space, in the jail directory as configured in
243
Only the user-specific parts of the jail are created here - everything
244
else is expected to be part of another aufs branch.
187
This only creates things within /home - everything else is expected to be
188
part of another UnionFS branch.
246
190
Returns the path to the user's home directory.
248
192
Chowns the user's directory within the jail to the given UID.
250
@param force: If False, raise an exception if the user already has a jail.
251
If True (default), rebuild the jail preserving /home.
194
force: If false, exception if jail already exists for this user.
195
If true (default), overwrites it, but preserves home directory.
253
197
# MUST run as root or some of this may fail
254
198
if os.getuid() != 0:
303
246
make_ivle_conf(user.login, userdir, user.svn_pass, config)
304
247
make_etc_passwd(user.login, userdir, config['paths']['jails']['template'],
307
os.chmod(tmpdir, 01777)
309
250
return userhomedir
311
252
def make_ivle_conf(username, user_jail_dir, svn_pass, sys_config):
312
"""Generate an ivle.conf for a user's jail.
314
254
Creates (overwriting any existing file, and creating directories) a
315
255
file /etc/ivle/ivle.conf in a given user's jail.
317
256
@param username: Username.
318
257
@param user_jail_dir: User's jail dir, ie. ['jails']['src'] + username
319
258
@param svn_pass: User's SVN password.
320
259
@param sys_config: An ivle.config.Config object (the system-wide config).
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))
261
conf_path = os.path.join(user_jail_dir, "etc/ivle/ivle.conf")
262
os.makedirs(os.path.dirname(conf_path))
326
264
# In the "in-jail" version of conf, we don't need MOST of the details
327
265
# (it would be a security risk to have them here).
328
266
# So we just write root_dir.
329
267
conf_obj = ivle.config.Config(blank=True)
330
268
conf_obj.filename = conf_path
331
conf_obj['urls'] = {}
332
269
conf_obj['urls']['root'] = sys_config['urls']['root']
333
270
conf_obj['urls']['public_host'] = sys_config['urls']['public_host']
334
271
conf_obj['urls']['svn_addr'] = sys_config['urls']['svn_addr']
335
conf_obj['user_info'] = {}
336
272
conf_obj['user_info']['login'] = username
337
273
conf_obj['user_info']['svn_pass'] = svn_pass