55
76
chown_to_webserver(path)
57
def rebuild_svn_config(store, config):
78
def rebuild_svn_config(store):
58
79
"""Build the complete SVN configuration file.
60
@param config: An ivle.config.Config object.
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'))
81
users = store.find(ivle.database.User)
85
if role not in groups:
87
groups[role].append(u.login)
88
f = open(ivle.conf.svn_conf + ".new", "w")
89
f.write("# IVLE SVN Repositories Configuration\n")
90
f.write("# Auto-generated on %s\n" % time.asctime())
93
for (g,ls) in groups.iteritems():
94
f.write("%s = %s\n" % (g, ",".join(ls)))
97
f.write("[%s:/]\n" % u.login)
98
f.write("%s = rw\n" % u.login)
99
#f.write("@tutor = r\n")
100
#f.write("@lecturer = rw\n")
101
#f.write("@admin = rw\n")
123
os.rename(temp_name, conf_name)
124
chown_to_webserver(conf_name)
104
os.rename(ivle.conf.svn_conf + ".new", ivle.conf.svn_conf)
105
chown_to_webserver(ivle.conf.svn_conf)
126
def rebuild_svn_group_config(store, config):
107
def rebuild_svn_group_config(store):
127
108
"""Build the complete SVN configuration file for groups
129
@param config: An ivle.config.Config object.
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 = {}
110
f = open(ivle.conf.svn_group_conf + ".new", "w")
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
offering.semester.url_name,
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.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)
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.
125
os.rename(ivle.conf.svn_group_conf + ".new", ivle.conf.svn_group_conf)
126
chown_to_webserver(ivle.conf.svn_group_conf)
128
def make_svn_auth(store, login, throw_on_error=True):
129
"""Setup svn authentication for the given user.
130
Uses the given DB store object. Does not commit to the db.
216
# filename is, eg, /var/lib/ivle/svn/ivle.auth
217
filename = config['paths']['svn']['auth_ivle']
218
if os.path.exists(filename):
132
passwd = md5.new(uuid.uuid4().bytes).digest().encode('hex')
133
if os.path.exists(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])
138
user = ivle.database.User.get_by_login(store, login)
139
user.svn_pass = unicode(passwd)
141
res = os.system("htpasswd -%smb %s %s %s" % (create,
142
ivle.conf.svn_auth_ivle,
231
144
if res != 0 and throw_on_error:
232
145
raise Exception("Unable to create ivle-auth for %s" % login)
234
147
# Make sure the file is owned by the web server
235
148
if create == "c":
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.
149
chown_to_webserver(ivle.conf.svn_auth_ivle)
153
def generate_manifest(basedir, targetdir, parent=''):
154
""" From a basedir and a targetdir work out which files are missing or out
155
of date and need to be added/updated and which files are redundant and need
158
parent: This is used for the recursive call to track the relative paths
159
that we have decended.
162
cmp = filecmp.dircmp(basedir, targetdir)
164
# Add all new files and files that have changed
165
to_add = [os.path.join(parent,x) for x in (cmp.left_only + cmp.diff_files)]
167
# Remove files that are redundant
168
to_remove = [os.path.join(parent,x) for x in cmp.right_only]
171
for d in cmp.common_dirs:
172
newbasedir = os.path.join(basedir, d)
173
newtargetdir = os.path.join(targetdir, d)
174
newparent = os.path.join(parent, d)
175
(sadd,sremove) = generate_manifest(newbasedir, newtargetdir, newparent)
179
return (to_add, to_remove)
182
def make_jail(user, force=True):
183
"""Creates a new user's jail space, in the jail directory as configured in
186
This only creates things within /home - everything else is expected to be
187
part of another UnionFS branch.
246
189
Returns the path to the user's home directory.
248
191
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.
193
force: If false, exception if jail already exists for this user.
194
If true (default), overwrites it, but preserves home directory.
253
196
# MUST run as root or some of this may fail
254
197
if os.getuid() != 0:
255
198
raise Exception("Must run make_jail as root")
257
200
# tempdir is for putting backup homes in
258
jail_src_base = config['paths']['jails']['src']
259
tempdir = os.path.join(jail_src_base, '__temp__')
201
tempdir = os.path.join(ivle.conf.jail_base, '__temp__')
260
202
if not os.path.exists(tempdir):
261
203
os.makedirs(tempdir)
262
204
elif not os.path.isdir(tempdir):
263
205
os.unlink(tempdir)
264
206
os.mkdir(tempdir)
265
userdir = os.path.join(jail_src_base, user.login)
207
userdir = os.path.join(ivle.conf.jail_src_base, user.login)
266
208
homedir = os.path.join(userdir, 'home')
267
tmpdir = os.path.join(userdir, 'tmp')
268
209
userhomedir = os.path.join(homedir, user.login) # Return value
270
211
if os.path.exists(userdir):
300
241
# Chmod to rwxr-xr-x (755)
301
242
os.chmod(userhomedir, 0755)
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)
244
make_conf_py(user.login, userdir, ivle.conf.jail_system, user.svn_pass)
245
make_etc_passwd(user.login, userdir, ivle.conf.jail_system, user.unixid)
309
247
return userhomedir
311
def make_ivle_conf(username, user_jail_dir, svn_pass, sys_config):
312
"""Generate an ivle.conf for a user's jail.
249
def make_conf_py(username, user_jail_dir, staging_dir, svn_pass):
314
251
Creates (overwriting any existing file, and creating directories) a
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
file ${python_site_packages}/ivle/conf/conf.py in a given user's jail.
254
user_jail_dir: User's jail dir, ie. ivle.conf.jail_base + username
255
staging_dir: The dir with the staging copy of the jail. (With the
256
template conf.py file).
257
svn_pass: As with make_jail. User's SVN password, but if not supplied,
258
will look up in the DB.
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
260
template_conf_path = os.path.join(staging_dir,
261
ivle.conf.python_site_packages[1:], "ivle/conf/conf.py")
262
conf_path = os.path.join(user_jail_dir,
263
ivle.conf.python_site_packages[1:], "ivle/conf/conf.py")
264
os.makedirs(os.path.dirname(conf_path))
266
# Read the contents of the template conf file
268
template_conf_file = open(template_conf_path, "r")
269
template_conf_data = template_conf_file.read()
270
template_conf_file.close()
272
# Couldn't open template conf.py for some reason
273
# Just treat it as empty file
274
template_conf_data = ("# Warning: Problem building config script.\n"
275
"# Could not find template conf.py file.\n")
277
conf_file = open(conf_path, "w")
278
conf_file.write(template_conf_data)
279
conf_file.write("\n# The login name for the owner of the jail\n")
280
conf_file.write("login = %s\n" % repr(username))
281
conf_file.write("\n")
282
conf_file.write("# The subversion-only password for the owner of "
284
conf_file.write("svn_pass = %s\n" % repr(svn_pass))
340
287
# Make this file world-readable
341
288
# (chmod 644 conf_path)