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1 | package PVE::API2::AccessControl; | |
2 | ||
3 | use strict; | |
4 | use warnings; | |
5 | ||
6 | use PVE::Exception qw(raise raise_perm_exc); | |
7 | use PVE::SafeSyslog; | |
8 | use PVE::RPCEnvironment; | |
9 | use PVE::Cluster qw(cfs_read_file); | |
10 | use PVE::RESTHandler; | |
11 | use PVE::AccessControl; | |
12 | use PVE::JSONSchema qw(get_standard_option); | |
13 | use PVE::API2::Domains; | |
14 | use PVE::API2::User; | |
15 | use PVE::API2::Group; | |
16 | use PVE::API2::Role; | |
17 | use PVE::API2::ACL; | |
18 | ||
19 | use base qw(PVE::RESTHandler); | |
20 | ||
21 | __PACKAGE__->register_method ({ | |
22 | subclass => "PVE::API2::User", | |
23 | path => 'users', | |
24 | }); | |
25 | ||
26 | __PACKAGE__->register_method ({ | |
27 | subclass => "PVE::API2::Group", | |
28 | path => 'groups', | |
29 | }); | |
30 | ||
31 | __PACKAGE__->register_method ({ | |
32 | subclass => "PVE::API2::Role", | |
33 | path => 'roles', | |
34 | }); | |
35 | ||
36 | __PACKAGE__->register_method ({ | |
37 | subclass => "PVE::API2::ACL", | |
38 | path => 'acl', | |
39 | }); | |
40 | ||
41 | __PACKAGE__->register_method ({ | |
42 | subclass => "PVE::API2::Domains", | |
43 | path => 'domains', | |
44 | }); | |
45 | ||
46 | __PACKAGE__->register_method ({ | |
47 | name => 'index', | |
48 | path => '', | |
49 | method => 'GET', | |
50 | description => "Directory index.", | |
51 | permissions => { | |
52 | user => 'all', | |
53 | }, | |
54 | parameters => { | |
55 | additionalProperties => 0, | |
56 | properties => {}, | |
57 | }, | |
58 | returns => { | |
59 | type => 'array', | |
60 | items => { | |
61 | type => "object", | |
62 | properties => { | |
63 | subdir => { type => 'string' }, | |
64 | }, | |
65 | }, | |
66 | links => [ { rel => 'child', href => "{subdir}" } ], | |
67 | }, | |
68 | code => sub { | |
69 | my ($param) = @_; | |
70 | ||
71 | my $res = []; | |
72 | ||
73 | my $ma = __PACKAGE__->method_attributes(); | |
74 | ||
75 | foreach my $info (@$ma) { | |
76 | next if !$info->{subclass}; | |
77 | ||
78 | my $subpath = $info->{match_re}->[0]; | |
79 | ||
80 | push @$res, { subdir => $subpath }; | |
81 | } | |
82 | ||
83 | push @$res, { subdir => 'ticket' }; | |
84 | push @$res, { subdir => 'password' }; | |
85 | ||
86 | return $res; | |
87 | }}); | |
88 | ||
89 | ||
90 | my $verify_auth = sub { | |
91 | my ($rpcenv, $username, $pw_or_ticket, $path, $privs) = @_; | |
92 | ||
93 | my $normpath = PVE::AccessControl::normalize_path($path); | |
94 | ||
95 | my $ticketuser; | |
96 | if (($ticketuser = PVE::AccessControl::verify_ticket($pw_or_ticket, 1)) && | |
97 | ($ticketuser eq $username)) { | |
98 | # valid ticket | |
99 | } elsif (PVE::AccessControl::verify_vnc_ticket($pw_or_ticket, $username, $normpath, 1)) { | |
100 | # valid vnc ticket | |
101 | } else { | |
102 | $username = PVE::AccessControl::authenticate_user($username, $pw_or_ticket); | |
103 | } | |
104 | ||
105 | my $privlist = [ PVE::Tools::split_list($privs) ]; | |
106 | if (!($normpath && scalar(@$privlist) && $rpcenv->check($username, $normpath, $privlist))) { | |
107 | die "no permission ($path, $privs)\n"; | |
108 | } | |
109 | ||
110 | return { username => $username }; | |
111 | }; | |
112 | ||
113 | my $create_ticket = sub { | |
114 | my ($rpcenv, $username, $pw_or_ticket) = @_; | |
115 | ||
116 | my $ticketuser; | |
117 | if (($ticketuser = PVE::AccessControl::verify_ticket($pw_or_ticket, 1)) && | |
118 | ($ticketuser eq 'root@pam' || $ticketuser eq $username)) { | |
119 | # valid ticket. Note: root@pam can create tickets for other users | |
120 | } else { | |
121 | $username = PVE::AccessControl::authenticate_user($username, $pw_or_ticket); | |
122 | } | |
123 | ||
124 | my $ticket = PVE::AccessControl::assemble_ticket($username); | |
125 | my $csrftoken = PVE::AccessControl::assemble_csrf_prevention_token($username); | |
126 | ||
127 | return { | |
128 | ticket => $ticket, | |
129 | username => $username, | |
130 | CSRFPreventionToken => $csrftoken, | |
131 | }; | |
132 | }; | |
133 | ||
134 | __PACKAGE__->register_method ({ | |
135 | name => 'create_ticket', | |
136 | path => 'ticket', | |
137 | method => 'POST', | |
138 | permissions => { | |
139 | description => "You need to pass valid credientials.", | |
140 | user => 'world' | |
141 | }, | |
142 | protected => 1, # else we can't access shadow files | |
143 | description => "Create or verify authentication ticket.", | |
144 | parameters => { | |
145 | additionalProperties => 0, | |
146 | properties => { | |
147 | username => { | |
148 | description => "User name", | |
149 | type => 'string', | |
150 | maxLength => 64, | |
151 | }, | |
152 | realm => get_standard_option('realm', { | |
153 | description => "You can optionally pass the realm using this parameter. Normally the realm is simply added to the username <username>\@<relam>.", | |
154 | optional => 1}), | |
155 | password => { | |
156 | description => "The secret password. This can also be a valid ticket.", | |
157 | type => 'string', | |
158 | }, | |
159 | path => { | |
160 | description => "Verify ticket, and check if user have access 'privs' on 'path'", | |
161 | type => 'string', | |
162 | requires => 'privs', | |
163 | optional => 1, | |
164 | maxLength => 64, | |
165 | }, | |
166 | privs => { | |
167 | description => "Verify ticket, and check if user have access 'privs' on 'path'", | |
168 | type => 'string' , format => 'pve-priv-list', | |
169 | requires => 'path', | |
170 | optional => 1, | |
171 | maxLength => 64, | |
172 | }, | |
173 | } | |
174 | }, | |
175 | returns => { | |
176 | type => "object", | |
177 | properties => { | |
178 | username => { type => 'string' }, | |
179 | ticket => { type => 'string', optional => 1}, | |
180 | CSRFPreventionToken => { type => 'string', optional => 1 }, | |
181 | } | |
182 | }, | |
183 | code => sub { | |
184 | my ($param) = @_; | |
185 | ||
186 | my $username = $param->{username}; | |
187 | $username .= "\@$param->{realm}" if $param->{realm}; | |
188 | ||
189 | my $rpcenv = PVE::RPCEnvironment::get(); | |
190 | ||
191 | my $res; | |
192 | ||
193 | eval { | |
194 | # test if user exists and is enabled | |
195 | $rpcenv->check_user_enabled($username); | |
196 | ||
197 | if ($param->{path} && $param->{privs}) { | |
198 | $res = &$verify_auth($rpcenv, $username, $param->{password}, | |
199 | $param->{path}, $param->{privs}); | |
200 | } else { | |
201 | $res = &$create_ticket($rpcenv, $username, $param->{password}); | |
202 | } | |
203 | }; | |
204 | if (my $err = $@) { | |
205 | my $clientip = $rpcenv->get_client_ip() || ''; | |
206 | syslog('err', "authentication failure; rhost=$clientip user=$username msg=$err"); | |
207 | die $err; | |
208 | } | |
209 | ||
210 | PVE::Cluster::log_msg('info', 'root@pam', "successful auth for user '$username'"); | |
211 | ||
212 | return $res; | |
213 | }}); | |
214 | ||
215 | __PACKAGE__->register_method ({ | |
216 | name => 'change_passsword', | |
217 | path => 'password', | |
218 | method => 'PUT', | |
219 | permissions => { | |
220 | description => "Each user is allowed to change his own password. A user can change the password of another user if he has 'Realm.AllocateUser' (on the realm of user <userid>) and 'User.Modify' permission on /access/groups/<group> on a group where user <userid> is member of.", | |
221 | check => [ 'or', | |
222 | ['userid-param', 'self'], | |
223 | [ 'and', | |
224 | [ 'userid-param', 'Realm.AllocateUser'], | |
225 | [ 'userid-group', ['User.Modify']] | |
226 | ] | |
227 | ], | |
228 | }, | |
229 | protected => 1, # else we can't access shadow files | |
230 | description => "Change user password.", | |
231 | parameters => { | |
232 | additionalProperties => 0, | |
233 | properties => { | |
234 | userid => get_standard_option('userid'), | |
235 | password => { | |
236 | description => "The new password.", | |
237 | type => 'string', | |
238 | minLength => 5, | |
239 | maxLength => 64, | |
240 | }, | |
241 | } | |
242 | }, | |
243 | returns => { type => "null" }, | |
244 | code => sub { | |
245 | my ($param) = @_; | |
246 | ||
247 | my $rpcenv = PVE::RPCEnvironment::get(); | |
248 | my $authuser = $rpcenv->get_user(); | |
249 | ||
250 | my ($userid, $ruid, $realm) = PVE::AccessControl::verify_username($param->{userid}); | |
251 | ||
252 | $rpcenv->check_user_exist($userid); | |
253 | ||
254 | if ($authuser eq 'root@pam') { | |
255 | # OK - root can change anything | |
256 | } else { | |
257 | if ($authuser eq $userid) { | |
258 | $rpcenv->check_user_enabled($userid); | |
259 | # OK - each user can change its own password | |
260 | } else { | |
261 | # only root may change root password | |
262 | raise_perm_exc() if $userid eq 'root@pam'; | |
263 | # do not allow to change system user passwords | |
264 | raise_perm_exc() if $realm eq 'pam'; | |
265 | } | |
266 | } | |
267 | ||
268 | PVE::AccessControl::domain_set_password($realm, $ruid, $param->{password}); | |
269 | ||
270 | PVE::Cluster::log_msg('info', 'root@pam', "changed password for user '$userid'"); | |
271 | ||
272 | return undef; | |
273 | }}); | |
274 | ||
275 | 1; |