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})
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'))
112
""" % {'login': login, 'id': psid, 'path': pspath})
114
for viewer_login in offering_viewers_cache[offeringid]:
115
# We don't want to override the owner's write privilege,
116
# so we don't add them to the read-only ACL.
117
if login != viewer_login:
118
f.write("%s = r\n" % viewer_login)
102
os.rename(ivle.conf.svn_conf + ".new", ivle.conf.svn_conf)
103
chown_to_webserver(ivle.conf.svn_conf)
121
os.rename(temp_name, conf_name)
122
chown_to_webserver(conf_name)
105
def rebuild_svn_group_config(store):
124
def rebuild_svn_group_config(store, config):
106
125
"""Build the complete SVN configuration file for groups
127
@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'])
129
conf_name = config['paths']['svn']['group_conf']
130
temp_name = conf_name + ".new"
131
f = open(temp_name, "w")
134
# IVLE SVN group repository authorisation configuration
135
# Generated: %(time)s
137
""" % {'time': time.asctime()})
139
group_members_cache = {}
140
for group in store.find(ProjectGroup):
141
offering = group.project_set.offering
142
reponame = "_".join([offering.subject.short_name,
143
offering.semester.year,
144
offering.semester.semester,
147
f.write("[%s:/]\n" % reponame)
148
if group.id not in group_members_cache:
149
group_members_cache[group.id] = set()
150
for user in group.members:
151
group_members_cache[group.id].add(user.login)
152
f.write("%s = rw\n" % user.login)
155
# Now we need to grant offering tutors and lecturers access to the latest
156
# submissions in their offerings. There are much prettier ways to do this,
157
# but a lot of browser requests call this function, so it needs to be
158
# fast. We can grab all of the paths needing authorisation directives with
159
# a single query, and we cache the list of viewers for each offering.
160
offering_viewers_cache = {}
161
for (ssn, year, sem, name, psid, pspath, gid, offeringid) in store.find(
162
(Subject.short_name, Semester.year, Semester.semester,
163
ProjectGroup.name, ProjectSubmission.id, ProjectSubmission.path,
164
ProjectGroup.id, Offering.id),
165
Assessed.id == ProjectSubmission.assessed_id,
166
ProjectGroup.id == Assessed.project_group_id,
167
Project.id == Assessed.project_id,
168
ProjectSet.id == Project.project_set_id,
169
Offering.id == ProjectSet.offering_id,
170
Subject.id == Offering.subject_id,
171
Semester.id == Offering.semester_id,
172
ProjectSubmission.date_submitted == Select(
173
Max(ProjectSubmission.date_submitted),
174
ProjectSubmission.assessed_id == Assessed.id,
175
tables=ProjectSubmission
179
reponame = "_".join([ssn, year, sem, name])
181
# Do we already have the list of logins authorised for this offering
182
# cached? If not, get it.
183
if offeringid not in offering_viewers_cache:
184
offering_viewers_cache[offeringid] = list(store.find(
186
User.id == Enrolment.user_id,
187
Enrolment.offering_id == offeringid,
188
Enrolment.role.is_in((u'tutor', u'lecturer'))
195
""" % {'repo': reponame, 'id': psid, 'path': pspath})
197
for viewer_login in offering_viewers_cache[offeringid]:
198
# Skip existing group members, or they can't write to it any more.
199
if viewer_login not in group_members_cache[gid]:
200
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.
203
os.rename(temp_name, conf_name)
204
chown_to_webserver(conf_name)
206
def make_svn_auth(store, login, config, throw_on_error=True):
207
"""Create a Subversion password for a user.
209
Generates a new random Subversion password, and assigns it to the user.
210
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):
212
# filename is, eg, /var/lib/ivle/svn/ivle.auth
213
filename = config['paths']['svn']['auth_ivle']
214
passwd = hashlib.md5(uuid.uuid4().bytes).hexdigest()
215
if os.path.exists(filename):
141
user = ivle.database.User.get_by_login(store, login)
220
user = User.get_by_login(store, login)
142
221
user.svn_pass = unicode(passwd)
144
res = os.system("htpasswd -%smb %s %s %s" % (create,
145
ivle.conf.svn_auth_ivle,
223
res = subprocess.call(['htpasswd', '-%smb' % create,
224
filename, login, passwd])
147
225
if res != 0 and throw_on_error:
148
226
raise Exception("Unable to create ivle-auth for %s" % login)
150
228
# Make sure the file is owned by the web server
151
229
if create == "c":
152
chown_to_webserver(ivle.conf.svn_auth_ivle)
230
chown_to_webserver(filename)
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.
234
def make_jail(user, config, force=True):
235
"""Create or update a user's jail.
237
Only the user-specific parts of the jail are created here - everything
238
else is expected to be part of another aufs branch.
192
240
Returns the path to the user's home directory.
194
242
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.
244
@param force: If False, raise an exception if the user already has a jail.
245
If True (default), rebuild the jail preserving /home.
199
247
# MUST run as root or some of this may fail
200
248
if os.getuid() != 0:
201
249
raise Exception("Must run make_jail as root")
203
251
# tempdir is for putting backup homes in
204
tempdir = os.path.join(ivle.conf.jail_base, '__temp__')
252
jail_src_base = config['paths']['jails']['src']
253
tempdir = os.path.join(jail_src_base, '__temp__')
205
254
if not os.path.exists(tempdir):
206
255
os.makedirs(tempdir)
207
256
elif not os.path.isdir(tempdir):
208
257
os.unlink(tempdir)
209
258
os.mkdir(tempdir)
210
userdir = os.path.join(ivle.conf.jail_src_base, user.login)
259
userdir = os.path.join(jail_src_base, user.login)
211
260
homedir = os.path.join(userdir, 'home')
261
tmpdir = os.path.join(userdir, 'tmp')
212
262
userhomedir = os.path.join(homedir, user.login) # Return value
214
264
if os.path.exists(userdir):
244
294
# Chmod to rwxr-xr-x (755)
245
295
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)
297
make_ivle_conf(user.login, userdir, user.svn_pass, config)
298
make_etc_passwd(user.login, userdir, config['paths']['jails']['template'],
301
os.chmod(tmpdir, 01777)
250
303
return userhomedir
252
def make_conf_py(username, user_jail_dir, staging_dir, svn_pass):
305
def make_ivle_conf(username, user_jail_dir, svn_pass, sys_config):
306
"""Generate an ivle.conf for a user's jail.
254
308
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.
309
file /etc/ivle/ivle.conf in a given user's jail.
311
@param username: Username.
312
@param user_jail_dir: User's jail dir, ie. ['jails']['src'] + username
313
@param svn_pass: User's SVN password.
314
@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))
316
conf_path = os.path.join(user_jail_dir, "home/.ivle.conf")
317
if not os.path.exists(os.path.dirname(conf_path)):
318
os.makedirs(os.path.dirname(conf_path))
320
# In the "in-jail" version of conf, we don't need MOST of the details
321
# (it would be a security risk to have them here).
322
# So we just write root_dir.
323
conf_obj = ivle.config.Config(blank=True)
324
conf_obj.filename = conf_path
325
conf_obj['urls']['root'] = sys_config['urls']['root']
326
conf_obj['urls']['public_host'] = sys_config['urls']['public_host']
327
conf_obj['urls']['svn_addr'] = sys_config['urls']['svn_addr']
328
conf_obj['user_info']['login'] = username
329
conf_obj['user_info']['svn_pass'] = svn_pass
290
332
# Make this file world-readable
291
333
# (chmod 644 conf_path)