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1 | <?php |
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2 | |
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3 | /* |
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4 | * db_prefs.php |
5 | * |
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6 | * Copyright (c) 1999-2002 The SquirrelMail Project Team |
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7 | * Licensed under the GNU GPL. For full terms see the file COPYING. |
8 | * |
9 | * This contains functions for manipulating user preferences |
10 | * stored in a database, accessed though the Pear DB layer. |
11 | * |
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12 | * Database: |
13 | * --------- |
14 | * |
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15 | * The preferences table should have three columns: |
16 | * user char \ primary |
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17 | * prefkey char / key |
18 | * prefval blob |
19 | * |
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20 | * CREATE TABLE userprefs (user CHAR(128) NOT NULL DEFAULT '', |
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21 | * prefkey CHAR(64) NOT NULL DEFAULT '', |
22 | * prefval BLOB NOT NULL DEFAULT '', |
23 | * primary key (user,prefkey)); |
24 | * |
25 | * Configuration of databasename, username and password is done |
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26 | * by using conf.pl or the administrator plugin |
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27 | * |
28 | * $Id$ |
29 | */ |
30 | |
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31 | define('SMDB_UNKNOWN', 0); |
32 | define('SMDB_MYSQL', 1); |
33 | define('SMDB_PGSQL', 2); |
34 | |
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35 | require_once('DB.php'); |
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36 | require_once(SM_PATH . 'config/config.php'); |
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37 | |
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38 | global $prefs_are_cached, $prefs_cache; |
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39 | |
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40 | function cachePrefValues($username) { |
41 | global $prefs_are_cached, $prefs_cache; |
42 | |
43 | if ($prefs_are_cached) { |
44 | return; |
45 | } |
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46 | |
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47 | sqsession_unregister('prefs_cache'); |
48 | sqsession_unregister('prefs_are_cached'); |
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49 | |
50 | $db = new dbPrefs; |
51 | if(isset($db->error)) { |
52 | printf( _("Preference database error (%s). Exiting abnormally"), |
53 | $db->error); |
54 | exit; |
55 | } |
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56 | |
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57 | $db->fillPrefsCache($username); |
58 | if (isset($db->error)) { |
59 | printf( _("Preference database error (%s). Exiting abnormally"), |
60 | $db->error); |
61 | exit; |
62 | } |
63 | |
64 | $prefs_are_cached = true; |
65 | |
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66 | sqsession_register($prefs_cache, 'prefs_cache'); |
67 | sqsession_register($prefs_are_cached, 'prefs_are_cached'); |
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68 | } |
69 | |
70 | class dbPrefs { |
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71 | var $table = 'userprefs'; |
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72 | var $user_field = 'user'; |
73 | var $key_field = 'prefkey'; |
74 | var $val_field = 'prefval'; |
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75 | |
76 | var $dbh = NULL; |
77 | var $error = NULL; |
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78 | var $db_type = SMDB_UNKNOWN; |
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79 | |
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80 | var $default = Array('theme_default' => 0, |
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81 | 'show_html_default' => '0'); |
82 | |
83 | function open() { |
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84 | global $prefs_dsn, $prefs_table; |
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85 | global $prefs_user_field, $prefs_key_field, $prefs_val_field; |
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86 | |
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87 | if(isset($this->dbh)) { |
88 | return true; |
89 | } |
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90 | |
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91 | if (preg_match('/^mysql/', $prefs_dsn)) { |
92 | $this->db_type = SMDB_MYSQL; |
93 | } elseif (preg_match('/^pgsql/', $prefs_dsn)) { |
94 | $this->db_type = SMDB_PGSQL; |
95 | } |
96 | |
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97 | if (!empty($prefs_table)) { |
98 | $this->table = $prefs_table; |
99 | } |
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100 | if (!empty($prefs_user_field)) { |
101 | $this->user_field = $prefs_user_field; |
102 | } |
103 | if (!empty($prefs_key_field)) { |
104 | $this->key_field = $prefs_key_field; |
105 | } |
106 | if (!empty($prefs_val_field)) { |
107 | $this->val_field = $prefs_val_field; |
108 | } |
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109 | $dbh = DB::connect($prefs_dsn, true); |
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110 | |
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111 | if(DB::isError($dbh)) { |
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112 | $this->error = DB::errorMessage($dbh); |
113 | return false; |
114 | } |
115 | |
116 | $this->dbh = $dbh; |
117 | return true; |
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118 | } |
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119 | |
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120 | function failQuery($res = NULL) { |
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121 | if($res == NULL) { |
122 | printf(_("Preference database error (%s). Exiting abnormally"), |
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123 | $this->error); |
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124 | } else { |
125 | printf(_("Preference database error (%s). Exiting abnormally"), |
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126 | DB::errorMessage($res)); |
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127 | } |
128 | exit; |
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129 | } |
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130 | |
131 | |
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132 | function getKey($user, $key, $default = '') { |
133 | global $prefs_cache; |
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134 | |
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135 | cachePrefValues($user); |
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136 | |
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137 | if (isset($prefs_cache[$key])) { |
138 | return $prefs_cache[$key]; |
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139 | } else { |
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140 | if (isset($this->default[$key])) { |
141 | return $this->default[$key]; |
142 | } else { |
143 | return $default; |
144 | } |
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145 | } |
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146 | } |
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147 | |
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148 | function deleteKey($user, $key) { |
149 | global $prefs_cache; |
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150 | |
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151 | if (!$this->open()) { |
152 | return false; |
153 | } |
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154 | $query = sprintf("DELETE FROM %s WHERE %s='%s' AND %s='%s'", |
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155 | $this->table, |
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156 | $this->user_field, |
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157 | $this->dbh->quoteString($user), |
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158 | $this->key_field, |
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159 | $this->dbh->quoteString($key)); |
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160 | |
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161 | $res = $this->dbh->simpleQuery($query); |
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162 | if(DB::isError($res)) { |
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163 | $this->failQuery($res); |
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164 | } |
165 | |
166 | unset($prefs_cache[$key]); |
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167 | |
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168 | return true; |
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169 | } |
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170 | |
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171 | function setKey($user, $key, $value) { |
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172 | if (!$this->open()) { |
173 | return false; |
174 | } |
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175 | if ($this->db_type == SMDB_MYSQL) { |
176 | $query = sprintf("REPLACE INTO %s (%s, %s, %s) ". |
177 | "VALUES('%s','%s','%s')", |
178 | $this->table, |
179 | $this->user_field, |
180 | $this->key_field, |
181 | $this->val_field, |
182 | $this->dbh->quoteString($user), |
183 | $this->dbh->quoteString($key), |
184 | $this->dbh->quoteString($value)); |
185 | |
186 | $res = $this->dbh->simpleQuery($query); |
187 | if(DB::isError($res)) { |
188 | $this->failQuery($res); |
189 | } |
190 | } elseif ($this->db_type == SMDB_PGSQL) { |
191 | $this->dbh->simpleQuery("BEGIN TRANSACTION"); |
192 | $query = sprintf("DELETE FROM %s WHERE %s='%s' AND %s='%s'", |
193 | $this->table, |
194 | $this->user_field, |
195 | $this->dbh->quoteString($user), |
196 | $this->key_field, |
197 | $this->dbh->quoteString($key)); |
198 | $res = $this->dbh->simpleQuery($query); |
199 | if (DB::isError($res)) { |
200 | $this->dbh->simpleQuery("ROLLBACK TRANSACTION"); |
201 | $this->failQuery($res); |
202 | } |
203 | $query = sprintf("INSERT INTO %s (%s, %s, %s) VALUES ('%s', '%s', '%s')", |
204 | $this->table, |
205 | $this->user_field, |
206 | $this->key_field, |
207 | $this->val_field, |
208 | $this->dbh->quoteString($user), |
209 | $this->dbh->quoteString($key), |
210 | $this->dbh->quoteString($value)); |
211 | $res = $this->dbh->simpleQuery($query); |
212 | if (DB::isError($res)) { |
213 | $this->dbh->simpleQuery("ROLLBACK TRANSACTION"); |
214 | $this->failQuery($res); |
215 | } |
216 | $this->dbh->simpleQuery("COMMIT TRANSACTION"); |
217 | } else { |
218 | $query = sprintf("DELETE FROM %s WHERE %s='%s' AND %s='%s'", |
219 | $this->table, |
220 | $this->user_field, |
221 | $this->dbh->quoteString($user), |
222 | $this->key_field, |
223 | $this->dbh->quoteString($key)); |
224 | $res = $this->dbh->simpleQuery($query); |
225 | if (DB::isError($res)) { |
226 | $this->failQuery($res); |
227 | } |
228 | $query = sprintf("INSERT INTO %s (%s, %s, %s) VALUES ('%s', '%s', '%s')", |
229 | $this->table, |
230 | $this->user_field, |
231 | $this->key_field, |
232 | $this->val_field, |
233 | $this->dbh->quoteString($user), |
234 | $this->dbh->quoteString($key), |
235 | $this->dbh->quoteString($value)); |
236 | $res = $this->dbh->simpleQuery($query); |
237 | if (DB::isError($res)) { |
238 | $this->failQuery($res); |
239 | } |
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240 | } |
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241 | |
242 | return true; |
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243 | } |
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244 | |
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245 | function fillPrefsCache($user) { |
246 | global $prefs_cache; |
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247 | |
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248 | if (!$this->open()) { |
249 | return; |
250 | } |
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251 | |
252 | $prefs_cache = array(); |
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253 | $query = sprintf("SELECT %s as prefkey, %s as prefval FROM %s ". |
254 | "WHERE %s = '%s'", |
255 | $this->key_field, |
256 | $this->val_field, |
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257 | $this->table, |
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258 | $this->user_field, |
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259 | $this->dbh->quoteString($user)); |
260 | $res = $this->dbh->query($query); |
261 | if (DB::isError($res)) { |
262 | $this->failQuery($res); |
263 | } |
264 | |
265 | while ($row = $res->fetchRow(DB_FETCHMODE_ASSOC)) { |
266 | $prefs_cache[$row['prefkey']] = $row['prefval']; |
267 | } |
268 | } |
269 | |
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270 | } /* end class dbPrefs */ |
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271 | |
272 | |
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273 | /* returns the value for the pref $string */ |
274 | function getPref($data_dir, $username, $string, $default = '') { |
275 | $db = new dbPrefs; |
276 | if(isset($db->error)) { |
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277 | printf( _("Preference database error (%s). Exiting abnormally"), |
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278 | $db->error); |
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279 | exit; |
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280 | } |
281 | |
282 | return $db->getKey($username, $string, $default); |
283 | } |
284 | |
285 | /* Remove the pref $string */ |
286 | function removePref($data_dir, $username, $string) { |
287 | $db = new dbPrefs; |
288 | if(isset($db->error)) { |
289 | $db->failQuery(); |
290 | } |
291 | |
292 | $db->deleteKey($username, $string); |
293 | return; |
294 | } |
295 | |
296 | /* sets the pref, $string, to $set_to */ |
297 | function setPref($data_dir, $username, $string, $set_to) { |
298 | global $prefs_cache; |
299 | |
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300 | if (isset($prefs_cache[$string]) && ($prefs_cache[$string] == $set_to)) { |
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301 | return; |
302 | } |
303 | |
304 | if ($set_to == '') { |
305 | removePref($data_dir, $username, $string); |
306 | return; |
307 | } |
308 | |
309 | $db = new dbPrefs; |
310 | if(isset($db->error)) { |
311 | $db->failQuery(); |
312 | } |
313 | |
314 | $db->setKey($username, $string, $set_to); |
315 | $prefs_cache[$string] = $set_to; |
316 | assert_options(ASSERT_ACTIVE, 1); |
317 | assert_options(ASSERT_BAIL, 1); |
318 | assert ('$set_to == $prefs_cache[$string]'); |
319 | |
320 | return; |
321 | } |
322 | |
323 | /* This checks if the prefs are available */ |
324 | function checkForPrefs($data_dir, $username) { |
325 | $db = new dbPrefs; |
326 | if(isset($db->error)) { |
327 | $db->failQuery(); |
328 | } |
329 | } |
330 | |
331 | /* Writes the Signature */ |
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332 | function setSig($data_dir, $username, $number, $string) { |
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333 | if ($number == "g") { |
334 | $key = '___signature___'; |
335 | } else { |
336 | $key = sprintf('___sig%s___', $number); |
337 | } |
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338 | setPref($data_dir, $username, $key, $string); |
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339 | return; |
340 | } |
341 | |
342 | /* Gets the signature */ |
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343 | function getSig($data_dir, $username, $number) { |
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344 | if ($number == "g") { |
345 | $key = '___signature___'; |
346 | } else { |
347 | $key = sprintf('___sig%d___', $number); |
348 | } |
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349 | return getPref($data_dir, $username, $key); |
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350 | } |
351 | |
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352 | ?> |