1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
|
<?php
/*
* Laconica - a distributed open-source microblogging tool
* Copyright (C) 2008, Controlez-Vous, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
if (!defined('LACONICA')) { exit(1); }
class ApiAction extends Action
{
var $user;
var $content_type;
var $api_arg;
var $api_method;
var $api_action;
function handle($args)
{
parent::handle($args);
$this->api_action = $this->arg('apiaction');
$method = $this->arg('method');
$argument = $this->arg('argument');
if (isset($argument)) {
$cmdext = explode('.', $argument);
$this->api_arg = $cmdext[0];
$this->api_method = $method;
$this->content_type = strtolower($cmdext[1]);
} else {
# Requested format / content-type will be an extension on the method
$cmdext = explode('.', $method);
$this->api_method = $cmdext[0];
$this->content_type = strtolower($cmdext[1]);
}
if ($this->requires_auth()) {
if (!isset($_SERVER['PHP_AUTH_USER'])) {
# This header makes basic auth go
header('WWW-Authenticate: Basic realm="Laconica API"');
# If the user hits cancel -- bam!
$this->show_basic_auth_error();
} else {
$nickname = $_SERVER['PHP_AUTH_USER'];
$password = $_SERVER['PHP_AUTH_PW'];
$user = common_check_user($nickname, $password);
if ($user) {
$this->user = $user;
$this->process_command();
} else {
# basic authentication failed
$this->show_basic_auth_error();
}
}
} else {
# Look for the user in the session
if (common_logged_in()) {
$this->user = common_current_user();
}
$this->process_command();
}
}
function process_command()
{
$action = "twitapi$this->api_action";
$actionfile = INSTALLDIR."/actions/$action.php";
if (file_exists($actionfile)) {
require_once($actionfile);
$action_class = ucfirst($action)."Action";
$action_obj = new $action_class();
if (!$action_obj->prepare($this->args)) {
return;
}
if (method_exists($action_obj, $this->api_method)) {
$apidata = array( 'content-type' => $this->content_type,
'api_method' => $this->api_method,
'api_arg' => $this->api_arg,
'user' => $this->user);
call_user_func(array($action_obj, $this->api_method), $_REQUEST, $apidata);
} else {
common_user_error("API method not found!", $code=404);
}
} else {
common_user_error("API method not found!", $code=404);
}
}
# Whitelist of API methods that don't need authentication
function requires_auth()
{
static $noauth = array( 'statuses/public_timeline',
'statuses/show',
'users/show',
'help/test',
'help/downtime_schedule',
'laconica/version',
'laconica/config',
'laconica/wadl');
static $bareauth = array('statuses/user_timeline',
'statuses/friends',
'statuses/followers',
'favorites/favorites');
# If the site is "private", all API methods need authentication
if (common_config('site', 'private')) {
return true;
}
$fullname = "$this->api_action/$this->api_method";
if (in_array($fullname, $bareauth)) {
# bareauth: only needs auth if without an argument
if ($this->api_arg) {
return false;
} else {
return true;
}
} else if (in_array($fullname, $noauth)) {
# noauth: never needs auth
return false;
} else {
# everybody else needs auth
return true;
}
}
function show_basic_auth_error()
{
header('HTTP/1.1 401 Unauthorized');
$msg = 'Could not authenticate you.';
if ($this->content_type == 'xml') {
header('Content-Type: application/xml; charset=utf-8');
common_start_xml();
$this->elementStart('hash');
$this->element('error', null, $msg);
$this->element('request', null, $_SERVER['REQUEST_URI']);
$this->elementEnd('hash');
common_end_xml();
} else if ($this->content_type == 'json') {
header('Content-Type: application/json; charset=utf-8');
$error_array = array('error' => $msg, 'request' => $_SERVER['REQUEST_URI']);
print(json_encode($error_array));
} else {
header('Content-type: text/plain');
print "$msg\n";
}
}
function is_readonly()
{
# NOTE: before handle(), can't use $this->arg
$apiaction = $_REQUEST['apiaction'];
$method = $_REQUEST['method'];
list($cmdtext, $fmt) = explode('.', $method);
static $write_methods = array(
'account' => array('update_location', 'update_delivery_device', 'end_session'),
'blocks' => array('create', 'destroy'),
'direct_messages' => array('create', 'destroy'),
'favorites' => array('create', 'destroy'),
'friendships' => array('create', 'destroy'),
'help' => array(),
'notifications' => array('follow', 'leave'),
'statuses' => array('update', 'destroy'),
'users' => array()
);
if (array_key_exists($apiaction, $write_methods)) {
if (!in_array($cmdtext, $write_methods[$apiaction])) {
return true;
}
}
return false;
}
}
|
