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2c445a8 Extensibility basics
jakubvrana authored
1 <?php
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2 class Adminer {
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3 /** @var array operators used in select, null for all operators */
4 var $operators;
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5
6 /** Name in title and navigation
7 * @return string
8 */
9 function name() {
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10 return "Adminer";
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11 }
12
13 /** Connection parameters
14 * @return array ($server, $username, $password)
15 */
16 function credentials() {
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17 return array(SERVER, $_GET["username"], get_session("pwds"));
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18 }
19
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20 /** Get key used for permanent login
21 * @return string cryptic string which gets combined with password
22 */
23 function permanentLogin() {
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24 return password_file();
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25 }
26
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27 /** Identifier of selected database
28 * @return string
29 */
30 function database() {
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31 // should be used everywhere instead of DB
32 return DB;
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33 }
34
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35 /** Headers to send before HTML output
36 * @return null
37 */
38 function headers() {
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39 header("X-Frame-Options: deny"); // ClickJacking protection in IE8, Safari 4, Chrome 2, Firefox 3.6.9
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40 header("X-XSS-Protection: 0"); // prevents introducing XSS in IE8 by removing safe parts of the page
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41 }
42
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43 /** Print login form
44 * @return null
45 */
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46 function loginForm() {
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47 global $drivers;
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48 ?>
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49 <table cellspacing="0">
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50 <tr><th><?php echo lang('System'); ?><td><?php echo html_select("driver", $drivers, DRIVER); ?>
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51 <tr><th><?php echo lang('Server'); ?><td><input name="server" value="<?php echo h(SERVER); ?>">
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52 <tr><th><?php echo lang('Username'); ?><td><input id="username" name="username" value="<?php echo h($_GET["username"]); ?>">
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53 <tr><th><?php echo lang('Password'); ?><td><input type="password" name="password">
54 </table>
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55 <script type="text/javascript">
56 document.getElementById('username').focus();
57 </script>
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58 <?php
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59 echo "<p><input type='submit' value='" . lang('Login') . "'>\n";
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60 echo checkbox("permanent", 1, $_COOKIE["adminer_permanent"], lang('Permanent login')) . "\n";
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61 }
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62
63 /** Authorize the user
64 * @param string
65 * @param string
66 * @return bool
67 */
68 function login($login, $password) {
69 return true;
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70 }
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71
72 /** Table caption used in navigation and headings
73 * @param array result of SHOW TABLE STATUS
74 * @return string
75 */
76 function tableName($tableStatus) {
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77 return h($tableStatus["Name"]);
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78 }
79
80 /** Field caption used in select and edit
81 * @param array single field returned from fields()
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82 * @param int order of column in select
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83 * @return string
84 */
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85 function fieldName($field, $order = 0) {
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86 return '<span title="' . h($field["full_type"]) . '">' . h($field["field"]) . '</span>';
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87 }
88
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89 /** Print links after select heading
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90 * @param array result of SHOW TABLE STATUS
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91 * @param string new item options, NULL for no new item
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92 * @return null
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93 */
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94 function selectLinks($tableStatus, $set = "") {
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95 echo '<p class="tabs">';
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96 $links = array("select" => lang('Select data'), "table" => lang('Show structure'));
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97 if (is_view($tableStatus)) {
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98 $links["view"] = lang('Alter view');
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99 } else {
100 $links["create"] = lang('Alter table');
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101 }
102 if (isset($set)) {
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103 $links["edit"] = lang('New item');
104 }
105 foreach ($links as $key => $val) {
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106 echo " <a href='" . h(ME) . "$key=" . urlencode($tableStatus["Name"]) . ($key == "edit" ? $set : "") . "'>" . bold($val, isset($_GET[$key])) . "</a>";
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107 }
108 echo "\n";
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109 }
110
111 /** Find backward keys for table
112 * @param string
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113 * @param string
114 * @return array $return[$target_table]["keys"][$key_name][$target_column] = $source_column; $return[$target_table]["name"] = $this->tableName($target_table);
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115 */
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116 function backwardKeys($table, $tableName) {
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117 return array();
118 }
119
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120 /** Print backward keys for row
121 * @param array result of $this->backwardKeys()
122 * @param array
123 * @return null
124 */
125 function backwardKeysPrint($backwardKeys, $row) {
126 }
127
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128 /** Query printed in select before execution
129 * @param string query to be executed
130 * @return string
131 */
132 function selectQuery($query) {
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133 global $jush;
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134 return "<p><a href='" . h(remove_from_uri("page")) . "&amp;page=last' title='" . lang('Page') . ": " . lang('last') . "'>&gt;&gt;</a> <code class='jush-$jush'>" . h(str_replace("\n", " ", $query)) . "</code> <a href='" . h(ME) . "sql=" . urlencode($query) . "'>" . lang('Edit') . "</a>\n";
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135 }
136
137 /** Description of a row in a table
138 * @param string
139 * @return string SQL expression, empty string for no description
140 */
141 function rowDescription($table) {
142 return "";
143 }
144
145 /** Get descriptions of selected data
146 * @param array all data to print
147 * @param array
148 * @return array
149 */
150 function rowDescriptions($rows, $foreignKeys) {
151 return $rows;
152 }
153
154 /** Value printed in select table
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155 * @param string HTML-escaped value to print
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156 * @param string link to foreign key
157 * @param array single field returned from fields()
158 * @return string
159 */
160 function selectVal($val, $link, $field) {
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161 $return = ($val != "<i>NULL</i>" && ereg("^char|binary", $field["type"]) ? "<code>$val</code>" : $val);
162 if (ereg('blob|bytea|raw|file', $field["type"]) && !is_utf8($val)) {
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163 $return = lang('%d byte(s)', strlen(html_entity_decode($val, ENT_QUOTES)));
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164 }
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165 return ($link ? "<a href='$link'>$return</a>" : $return);
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166 }
167
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168 /** Value conversion used in select and edit
169 * @param string
170 * @param array single field returned from fields()
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171 * @return string
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172 */
173 function editVal($val, $field) {
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174 return (ereg("binary", $field["type"]) ? reset(unpack("H*", $val)) : $val);
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175 }
176
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177 /** Print columns box in select
178 * @param array result of selectColumnsProcess()
179 * @param array selectable columns
180 * @return null
181 */
182 function selectColumnsPrint($select, $columns) {
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183 global $functions, $grouping;
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184 print_fieldset("select", lang('Select'), $select);
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185 $i = 0;
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186 $fun_group = array(lang('Functions') => $functions, lang('Aggregation') => $grouping);
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187 foreach ($select as $key => $val) {
188 $val = $_GET["columns"][$key];
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189 echo "<div>" . html_select("columns[$i][fun]", array(-1 => "") + $fun_group, $val["fun"]);
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190 echo "(<select name='columns[$i][col]'><option>" . optionlist($columns, $val["col"], true) . "</select>)</div>\n";
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191 $i++;
192 }
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193 echo "<div>" . html_select("columns[$i][fun]", array(-1 => "") + $fun_group, "", "this.nextSibling.nextSibling.onchange();");
194 echo "(<select name='columns[$i][col]' onchange='selectAddRow(this);'><option>" . optionlist($columns, null, true) . "</select>)</div>\n";
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195 echo "</div></fieldset>\n";
196 }
197
198 /** Print search box in select
199 * @param array result of selectSearchProcess()
200 * @param array selectable columns
201 * @param array
202 * @return null
203 */
204 function selectSearchPrint($where, $columns, $indexes) {
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205 print_fieldset("search", lang('Search'), $where);
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206 foreach ($indexes as $i => $index) {
207 if ($index["type"] == "FULLTEXT") {
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208 echo "(<i>" . implode("</i>, <i>", array_map('h', $index["columns"])) . "</i>) AGAINST";
209 echo " <input name='fulltext[$i]' value='" . h($_GET["fulltext"][$i]) . "'>";
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210 echo checkbox("boolean[$i]", 1, isset($_GET["boolean"][$i]), "BOOL");
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211 echo "<br>\n";
212 }
213 }
214 $i = 0;
215 foreach ((array) $_GET["where"] as $val) {
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216 if ("$val[col]$val[val]" != "" && in_array($val["op"], $this->operators)) {
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217 echo "<div><select name='where[$i][col]'><option value=''>(" . lang('anywhere') . ")" . optionlist($columns, $val["col"], true) . "</select>";
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218 echo html_select("where[$i][op]", $this->operators, $val["op"]);
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219 echo "<input name='where[$i][val]' value='" . h($val["val"]) . "'></div>\n";
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220 $i++;
221 }
222 }
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223 echo "<div><select name='where[$i][col]' onchange='selectAddRow(this);'><option value=''>(" . lang('anywhere') . ")" . optionlist($columns, null, true) . "</select>";
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224 echo html_select("where[$i][op]", $this->operators);
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225 echo "<input name='where[$i][val]'></div>\n";
226 echo "</div></fieldset>\n";
227 }
228
229 /** Print order box in select
230 * @param array result of selectOrderProcess()
231 * @param array selectable columns
232 * @param array
233 * @return null
234 */
235 function selectOrderPrint($order, $columns, $indexes) {
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236 print_fieldset("sort", lang('Sort'), $order);
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237 $i = 0;
238 foreach ((array) $_GET["order"] as $key => $val) {
239 if (isset($columns[$val])) {
240 echo "<div><select name='order[$i]'><option>" . optionlist($columns, $val, true) . "</select>";
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241 echo checkbox("desc[$i]", 1, isset($_GET["desc"][$key]), lang('descending')) . "</div>\n";
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242 $i++;
243 }
244 }
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245 echo "<div><select name='order[$i]' onchange='selectAddRow(this);'><option>" . optionlist($columns, null, true) . "</select>";
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246 echo checkbox("desc[$i]", 1, 0, lang('descending')) . "</div>\n";
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247 echo "</div></fieldset>\n";
248 }
249
250 /** Print limit box in select
251 * @param string result of selectLimitProcess()
252 * @return null
253 */
254 function selectLimitPrint($limit) {
255 echo "<fieldset><legend>" . lang('Limit') . "</legend><div>"; // <div> for easy styling
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256 echo "<input name='limit' size='3' value='" . h($limit) . "'>";
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257 echo "</div></fieldset>\n";
258 }
259
260 /** Print text length box in select
261 * @param string result of selectLengthProcess()
262 * @return null
263 */
264 function selectLengthPrint($text_length) {
265 if (isset($text_length)) {
266 echo "<fieldset><legend>" . lang('Text length') . "</legend><div>";
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267 echo '<input name="text_length" size="3" value="' . h($text_length) . '">';
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268 echo "</div></fieldset>\n";
269 }
270 }
271
272 /** Print action box in select
273 * @return null
274 */
275 function selectActionPrint() {
276 echo "<fieldset><legend>" . lang('Action') . "</legend><div>";
277 echo "<input type='submit' value='" . lang('Select') . "'>";
278 echo "</div></fieldset>\n";
279 }
280
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281 /** Print extra text in the end of a select form
282 * @param array fields holding e-mails
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283 * @param array selectable columns
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284 * @return null
285 */
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286 function selectEmailPrint($emailFields, $columns) {
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287 }
288
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289 /** Process columns box in select
290 * @param array selectable columns
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291 * @param array
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292 * @return array (array(select_expressions), array(group_expressions))
293 */
294 function selectColumnsProcess($columns, $indexes) {
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295 global $functions, $grouping;
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296 $select = array(); // select expressions, empty for *
297 $group = array(); // expressions without aggregation - will be used for GROUP BY if an aggregation function is used
298 foreach ((array) $_GET["columns"] as $key => $val) {
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299 if ($val["fun"] == "count" || (isset($columns[$val["col"]]) && (!$val["fun"] || in_array($val["fun"], $functions) || in_array($val["fun"], $grouping)))) {
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300 $select[$key] = apply_sql_function($val["fun"], (isset($columns[$val["col"]]) ? idf_escape($val["col"]) : "*"));
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301 if (!in_array($val["fun"], $grouping)) {
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302 $group[] = $select[$key];
303 }
304 }
305 }
306 return array($select, $group);
307 }
308
309 /** Process search box in select
310 * @param array
311 * @param array
312 * @return array expressions to join by AND
313 */
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314 function selectSearchProcess($fields, $indexes) {
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315 global $jush;
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316 $return = array();
317 foreach ($indexes as $i => $index) {
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318 if ($index["type"] == "FULLTEXT" && $_GET["fulltext"][$i] != "") {
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319 $return[] = "MATCH (" . implode(", ", array_map('idf_escape', $index["columns"])) . ") AGAINST (" . q($_GET["fulltext"][$i]) . (isset($_GET["boolean"][$i]) ? " IN BOOLEAN MODE" : "") . ")";
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320 }
321 }
322 foreach ((array) $_GET["where"] as $val) {
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323 if ("$val[col]$val[val]" != "" && in_array($val["op"], $this->operators)) {
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324 $cond = " $val[op]";
325 if (ereg('IN$', $val["op"])) {
326 $in = process_length($val["val"]);
327 $cond .= " (" . ($in != "" ? $in : "NULL") . ")";
328 } elseif ($val["op"] == "LIKE %%") {
329 $cond = " LIKE " . $this->processInput($fields[$val["col"]], "%$val[val]%");
330 } elseif (!ereg('NULL$', $val["op"])) {
331 $cond .= " " . $this->processInput($fields[$val["col"]], $val["val"]);
332 }
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333 if ($val["col"] != "") {
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334 $return[] = idf_escape($val["col"]) . $cond;
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335 } else {
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336 // find anywhere
337 $cols = array();
338 foreach ($fields as $name => $field) {
339 if (is_numeric($val["val"]) || !ereg('int|float|double|decimal', $field["type"])) {
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340 $name = idf_escape($name);
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341 $cols[] = ($jush == "sql" && ereg('char|text|enum|set', $field["type"]) && !ereg('^utf8', $field["collation"]) ? "CONVERT($name USING utf8)" : $name);
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342 }
343 }
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344 $return[] = ($cols ? "(" . implode("$cond OR ", $cols) . "$cond)" : "0");
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345 }
346 }
347 }
348 return $return;
349 }
350
351 /** Process order box in select
352 * @param array
353 * @param array
354 * @return array expressions to join by comma
355 */
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356 function selectOrderProcess($fields, $indexes) {
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357 $return = array();
358 foreach ((array) $_GET["order"] as $key => $val) {
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359 if (isset($fields[$val]) || preg_match('~^((COUNT\\(DISTINCT |[A-Z0-9_]+\\()(`(?:[^`]|``)+`|"(?:[^"]|"")+")\\)|COUNT\\(\\*\\))$~', $val)) { //! MS SQL uses []
360 $return[] = (isset($fields[$val]) ? idf_escape($val) : $val) . (isset($_GET["desc"][$key]) ? " DESC" : "");
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361 }
362 }
363 return $return;
364 }
365
366 /** Process limit box in select
367 * @return string expression to use in LIMIT, will be escaped
368 */
369 function selectLimitProcess() {
370 return (isset($_GET["limit"]) ? $_GET["limit"] : "30");
371 }
372
373 /** Process length box in select
374 * @return string number of characters to shorten texts, will be escaped
375 */
376 function selectLengthProcess() {
377 return (isset($_GET["text_length"]) ? $_GET["text_length"] : "100");
378 }
379
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380 /** Process extras in select form
381 * @param array AND conditions
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382 * @param array
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383 * @return bool true if processed, false to process other parts of form
384 */
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385 function selectEmailProcess($where, $foreignKeys) {
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386 return false;
387 }
388
389 /** Query printed after execution in the message
390 * @param string executed query
391 * @return string
392 */
393 function messageQuery($query) {
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394 global $jush;
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395 restart_session();
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396 $id = "sql-" . count($_SESSION["messages"]);
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397 $history = &get_session("queries");
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398 $history[$_GET["db"]][] = (strlen($query) > 1e6 // not DB - reset in drop database
399 ? ereg_replace('[\x80-\xFF]+$', '', substr($query, 0, 1e6)) . "\n..." // [\x80-\xFF] - valid UTF-8, \n - can end by one-line comment
400 : $query
401 ); //! respect $_GET["ns"]
402 return " <a href='#$id' onclick=\"return !toggle('$id');\">" . lang('SQL command') . "</a><div id='$id' class='hidden'><pre class='jush-$jush'>" . shorten_utf8($query, 1000) . '</pre><p><a href="' . h(str_replace("db=" . urlencode(DB), "db=" . urlencode($_GET["db"]), ME) . 'sql=&history=' . (count($history[$_GET["db"]]) - 1)) . '">' . lang('Edit') . '</a></div>';
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403 }
404
405 /** Functions displayed in edit form
406 * @param array single field from fields()
407 * @return array
408 */
409 function editFunctions($field) {
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410 global $edit_functions;
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411 $return = ($field["null"] ? "NULL/" : "");
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412 foreach ($edit_functions as $key => $functions) {
413 if (!$key || (!isset($_GET["call"]) && (isset($_GET["select"]) || where($_GET)))) { // relative functions
414 foreach ($functions as $pattern => $val) {
415 if (!$pattern || ereg($pattern, $field["type"])) {
416 $return .= "/$val";
417 }
418 }
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419 }
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420 }
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421 return explode("/", $return);
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422 }
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423
424 /** Get options to display edit field
425 * @param string table name
426 * @param array single field from fields()
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427 * @param string attributes to use inside the tag
428 * @param string
429 * @return string custom input field or empty string for default
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430 */
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431 function editInput($table, $field, $attrs, $value) {
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432 if ($field["type"] == "enum") {
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433 return (isset($_GET["select"]) ? "<label><input type='radio'$attrs value='-1' checked><i>" . lang('original') . "</i></label> " : "")
434 . ($field["null"] ? "<label><input type='radio'$attrs value=''" . (isset($value) || isset($_GET["select"]) ? "" : " checked") . "><i>NULL</i></label> " : "")
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435 . "<label><input type='radio'$attrs value='0'" . ($value === 0 ? " checked" : "") . "><i>" . lang('empty') . "</i></label>"
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436 . enum_input("radio", $attrs, $field, $value)
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437 ;
438 }
439 return "";
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440 }
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441
442 /** Process sent input
443 * @param array single field from fields()
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444 * @param string
445 * @param string
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446 * @return string expression to use in a query
447 */
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448 function processInput($field, $value, $function = "") {
449 $name = $field["field"];
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450 $return = q($value);
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451 if (ereg('^(now|getdate|uuid)$', $function)) {
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452 $return = "$function()";
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453 } elseif (ereg('^current_(date|timestamp)$', $function)) {
454 $return = $function;
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455 } elseif (ereg('^([+-]|\\|\\|)$', $function)) {
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456 $return = idf_escape($name) . " $function $return";
457 } elseif (ereg('^[+-] interval$', $function)) {
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458 $return = idf_escape($name) . " $function " . (preg_match("~^(\\d+|'[0-9.: -]') [A-Z_]+$~i", $value) ? $value : $return);
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459 } elseif (ereg('^(addtime|subtime|concat)$', $function)) {
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460 $return = "$function(" . idf_escape($name) . ", $return)";
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461 } elseif (ereg('^(md5|sha1|password|encrypt|hex)$', $function)) {
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462 $return = "$function($return)";
463 }
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464 if (ereg("binary", $field["type"])) {
465 $return = "unhex($return)";
466 }
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467 return $return;
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468 }
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469
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470 /** Returns export output options
471 * @param bool generate select (otherwise radio)
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472 * @param string
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473 * @return string
474 */
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475 function dumpOutput($select, $value = "") {
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476 $return = array('text' => lang('open'), 'file' => lang('save'));
477 if (function_exists('gzencode')) {
478 $return['gz'] = 'gzip';
479 }
480 if (function_exists('bzcompress')) {
481 $return['bz2'] = 'bzip2';
482 }
483 // ZipArchive requires temporary file, ZIP can be created by gzcompress - see PEAR File_Archive
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484 return html_select("output", $return, $value, $select);
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485 }
486
487 /** Returns export format options
488 * @param bool generate select (otherwise radio)
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489 * @param string
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490 * @return string
491 */
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492 function dumpFormat($select, $value = "") {
493 return html_select("format", array('sql' => 'SQL', 'csv' => 'CSV,', 'csv;' => 'CSV;'), $value, $select);
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494 }
495
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496 /** Prints navigation after Adminer title
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497 * @param string can be "auth" if there is no database connection, "db" if there is no database selected, "ns" with invalid schema
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498 * @return null
499 */
500 function navigation($missing) {
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501 global $VERSION, $connection, $token, $jush, $drivers;
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502 ?>
503 <h1>
504 <a href="http://www.adminer.org/" id="h1"><?php echo $this->name(); ?></a>
505 <span class="version"><?php echo $VERSION; ?></span>
506 <a href="http://www.adminer.org/#download" id="version"><?php echo (version_compare($VERSION, $_COOKIE["adminer_version"]) < 0 ? h($_COOKIE["adminer_version"]) : ""); ?></a>
507 </h1>
508 <?php
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509 if ($missing == "auth") {
510 $first = true;
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511 foreach ((array) $_SESSION["pwds"] as $driver => $servers) {
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512 foreach ($servers as $server => $usernames) {
513 foreach ($usernames as $username => $password) {
514 if (isset($password)) {
515 if ($first) {
516 echo "<p>\n";
517 $first = false;
518 }
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519 echo "<a href='" . h(auth_url($driver, $server, $username)) . "'>($drivers[$driver]) " . h($username . ($server != "" ? "@$server" : "")) . "</a><br>\n";
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520 }
521 }
522 }
523 }
524 } else {
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525 $databases = get_databases();
526 ?>
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527 <form action="" method="post">
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528 <p class="logout">
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529 <?php
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530 if (DB == "" || !$missing) {
531 echo "<a href='" . h(ME) . "sql='>" . bold(lang('SQL command'), isset($_GET["sql"])) . "</a>\n";
532 if (support("dump")) {
533 echo "<a href='" . h(ME) . "dump=" . urlencode(isset($_GET["table"]) ? $_GET["table"] : $_GET["select"]) . "'>" . bold(lang('Dump'), isset($_GET["dump"])) . "</a>\n";
534 }
535 }
536 ?>
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537 <input type="hidden" name="token" value="<?php echo $token; ?>">
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538 <input type="submit" name="logout" value="<?php echo lang('Logout'); ?>">
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539 </p>
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540 </form>
541 <form action="">
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542 <p>
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543 <?php hidden_fields_get(); ?>
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544 <?php echo ($databases ? html_select("db", array("" => "(" . lang('database') . ")") + $databases, DB, "this.form.submit();") : '<input name="db" value="' . h(DB) . '">'); ?>
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545 <input type="submit" value="<?php echo lang('Use'); ?>"<?php echo ($databases ? " class='hidden'" : ""); ?>>
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546 <?php
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547 if ($missing != "db" && DB != "" && $connection->select_db(DB)) {
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548 if (support("scheme")) {
549 echo "<br>" . html_select("ns", array("" => "(" . lang('schema') . ")") + schemas(), $_GET["ns"], "this.form.submit();");
550 if ($_GET["ns"] != "") {
551 set_schema($_GET["ns"]);
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552 }
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553 }
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554 if ($_GET["ns"] !== "" && !$missing) {
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555 $tables = tables_list();
556 if (!$tables) {
557 echo "<p class='message'>" . lang('No tables.') . "\n";
558 } else {
559 $this->tablesPrint($tables);
560 $links = array();
561 foreach ($tables as $table => $type) {
562 $links[] = preg_quote($table, '/');
563 }
564 echo "<script type='text/javascript'>\n";
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565 echo "var jushLinks = { $jush: [ '" . js_escape(ME) . "table=\$&', /\\b(" . implode("|", $links) . ")\\b/g ] };\n";
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566 foreach (array("bac", "bra", "sqlite_quo", "mssql_bra") as $val) {
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567 echo "jushLinks.$val = jushLinks.$jush;\n";
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568 }
569 echo "</script>\n";
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570 }
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571 echo '<p><a href="' . h(ME) . 'create=">' . bold(lang('Create new table'), $_GET["create"] === "") . "</a>\n";
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572 }
573 }
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574 echo (isset($_GET["sql"]) ? '<input type="hidden" name="sql" value="">'
575 : (isset($_GET["schema"]) ? '<input type="hidden" name="schema" value="">'
576 : (isset($_GET["dump"]) ? '<input type="hidden" name="dump" value="">'
577 : "")));
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578 echo "</p></form>\n";
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579 }
580 }
581
582 /** Prints table list in menu
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583 * @param array
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584 * @return null
585 */
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586 function tablesPrint($tables) {
587 echo "<p id='tables'>\n";
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588 foreach ($tables as $table => $type) {
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589 echo '<a href="' . h(ME) . 'select=' . urlencode($table) . '">' . bold(lang('select'), $_GET["select"] == $table) . '</a> ';
590 echo '<a href="' . h(ME) . 'table=' . urlencode($table) . '">' . bold($this->tableName(array("Name" => $table)), $_GET["table"] == $table) . "</a><br>\n"; //! Adminer::tableName may work with full table status
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591 }
592 }
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593
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594 }
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595
596 $adminer = (function_exists('adminer_object') ? adminer_object() : new Adminer);
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597 if (!isset($adminer->operators)) {
598 $adminer->operators = $operators;
599 }
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