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functions.inc.php
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/
functions.inc.php
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<?php
function get_dbh() {
// can be used in customization, $dbh is minified
global $dbh;
return $dbh;
}
function idf_escape($idf) {
return "`" . str_replace("`", "``", $idf) . "`";
}
function idf_unescape($idf) {
return str_replace("``", "`", $idf);
}
function bracket_escape($idf, $back = false) {
// escape brackets inside name="x[]"
static $trans = array(':' => ':1', ']' => ':2', '[' => ':3');
return strtr($idf, ($back ? array_flip($trans) : $trans));
}
function h($string) {
return htmlspecialchars($string, ENT_QUOTES);
}
function nbsp($string) {
return (strlen(trim($string)) ? h($string) : " ");
}
function optionlist($options, $selected = null, $use_keys = false) {
$return = "";
foreach ($options as $k => $v) {
if (is_array($v)) {
$return .= '<optgroup label="' . h($k) . '">';
}
foreach ((is_array($v) ? $v : array($k => $v)) as $key => $val) {
$return .= '<option' . ($use_keys || is_string($key) ? ' value="' . h($key) . '"' : '') . (($use_keys || is_string($key) ? (string) $key : $val) === $selected ? ' selected' : '') . '>' . h($val);
}
if (is_array($v)) {
$return .= '</optgroup>';
}
}
return $return;
}
function get_vals($query, $column = 0) {
global $dbh;
$return = array();
$result = $dbh->query($query);
if ($result) {
while ($row = $result->fetch_row()) {
$return[] = $row[$column];
}
$result->free();
}
return $return;
}
function unique_idf($row, $indexes) {
foreach ($indexes as $index) {
if ($index["type"] == "PRIMARY" || $index["type"] == "UNIQUE") {
$return = array();
foreach ($index["columns"] as $key) {
if (!isset($row[$key])) { // NULL is ambiguous
continue 2;
}
$return[] = urlencode("where[" . bracket_escape($key) . "]") . "=" . urlencode($row[$key]);
}
return $return;
}
}
$return = array();
foreach ($row as $key => $val) {
if (!preg_match('~^(COUNT\\((\\*|(DISTINCT )?`(?:[^`]|``)+`)\\)|(AVG|GROUP_CONCAT|MAX|MIN|SUM)\\(`(?:[^`]|``)+`\\))$~', $key)) { //! columns looking like functions
$return[] = (isset($val) ? urlencode("where[" . bracket_escape($key) . "]") . "=" . urlencode($val) : "null%5B%5D=" . urlencode($key));
}
}
return $return;
}
function where($where) {
global $dbh;
$return = array();
foreach ((array) $where["where"] as $key => $val) {
$key = bracket_escape($key, "back");
$return[] = (preg_match('~^[A-Z0-9_]+\\(`(?:[^`]|``)+`\\)$~', $key) ? $key : idf_escape($key)) . " = BINARY " . $dbh->quote($val); //! enum and set, columns looking like functions
}
foreach ((array) $where["null"] as $key) {
$key = bracket_escape($key, "back");
$return[] = (preg_match('~^[A-Z0-9_]+\\(`(?:[^`]|``)+`\\)$~', $key) ? $key : idf_escape($key)) . " IS NULL";
}
return implode(" AND ", $return);
}
function where_check($val) {
parse_str($val, $check);
return where($check);
}
function where_link($i, $column, $value) {
return "&where%5B$i%5D%5Bcol%5D=" . urlencode($column) . "&where%5B$i%5D%5Bop%5D=%3D&where%5B$i%5D%5Bval%5D=" . urlencode($value);
}
function redirect($location, $message = null) {
if (isset($message)) {
$_SESSION["messages"][] = $message;
}
if (strlen(SID)) {
// append SID if session cookies are disabled
$location .= (strpos($location, "?") === false ? "?" : "&") . SID;
}
header("Location: " . (strlen($location) ? $location : "."));
exit;
}
function query_redirect($query, $location, $message, $redirect = true, $execute = true, $failed = false) {
global $dbh, $error, $adminer;
$sql = "";
if ($query) {
$sql = $adminer->messageQuery($query);
}
if ($execute) {
$failed = !$dbh->query($query);
}
if ($failed) {
$error = h($dbh->error) . $sql;
return false;
}
if ($redirect) {
redirect($location, $message . $sql);
}
return true;
}
function queries($query = null) {
global $dbh;
static $queries = array();
if (!isset($query)) {
// return executed queries without parameter
return implode(";\n", $queries);
}
$queries[] = $query;
return $dbh->query($query);
}
function remove_from_uri($param = "") {
$param = "($param|" . session_name() . ")";
return preg_replace("~\\?$param=[^&]*&~", '?', preg_replace("~\\?$param=[^&]*\$|&$param=[^&]*~", '', $_SERVER["REQUEST_URI"]));
}
function pagination($page) {
return " " . ($page == $_GET["page"] ? $page + 1 : '<a href="' . h(remove_from_uri("page") . ($page ? "&page=$page" : "")) . '">' . ($page + 1) . "</a>");
}
function get_file($key) {
// returns int for error, string otherwise
if (isset($_POST["files"][$key])) {
// get the file from hidden field if the user was logged out
$length = strlen($_POST["files"][$key]);
return ($length && $length < 4 ? intval($_POST["files"][$key]) : base64_decode($_POST["files"][$key]));
}
return (!$_FILES[$key] || $_FILES[$key]["error"] ? $_FILES[$key]["error"] : file_get_contents($_FILES[$key]["tmp_name"]));
}
function upload_error($error) {
$max_size = ($error == UPLOAD_ERR_INI_SIZE ? ini_get("upload_max_filesize") : null); // post_max_size is checked in index.php
return lang('Unable to upload a file.') . ($max_size ? " " . lang('Maximum allowed file size is %sB.', $max_size) : "");
}
function odd($s = ' class="odd"') {
static $i = 0;
if (!$s) { // reset counter
$i = -1;
}
return ($i++ % 2 ? $s : '');
}
function select($result, $dbh2 = null) {
if (!$result->num_rows) {
echo "<p class='message'>" . lang('No rows.') . "\n";
} else {
echo "<table cellspacing='0' class='nowrap'>\n";
$links = array(); // colno => orgtable - create links from these columns
$indexes = array(); // orgtable => array(column => colno) - primary keys
$columns = array(); // orgtable => array(column => ) - not selected columns in primary key
$blobs = array(); // colno => bool - display bytes for blobs
$types = array(); // colno => type - display char in <code>
odd(''); // reset odd for each result
for ($i=0; $row = $result->fetch_row(); $i++) {
if (!$i) {
echo "<thead><tr>";
for ($j=0; $j < count($row); $j++) {
$field = $result->fetch_field();
if (strlen($field->orgtable)) {
if (!isset($indexes[$field->orgtable])) {
// find primary key in each table
$indexes[$field->orgtable] = array();
foreach (indexes($field->orgtable, $dbh2) as $index) {
if ($index["type"] == "PRIMARY") {
$indexes[$field->orgtable] = array_flip($index["columns"]);
break;
}
}
$columns[$field->orgtable] = $indexes[$field->orgtable];
}
if (isset($columns[$field->orgtable][$field->orgname])) {
unset($columns[$field->orgtable][$field->orgname]);
$indexes[$field->orgtable][$field->orgname] = $j;
$links[$j] = $field->orgtable;
}
}
if ($field->charsetnr == 63) {
$blobs[$j] = true;
}
$types[$j] = $field->type;
echo "<th>" . h($field->name);
}
echo "</thead>\n";
}
echo "<tr" . odd() . ">";
foreach ($row as $key => $val) {
if (!isset($val)) {
$val = "<i>NULL</i>";
} else {
if ($blobs[$key] && !is_utf8($val)) {
$val = "<i>" . lang('%d byte(s)', strlen($val)) . "</i>"; //! link to download
} elseif (!strlen(trim($val, " \t"))) {
$val = " "; // some content to print a border
} else {
$val = nl2br(h($val));
if ($types[$key] == 254) {
$val = "<code>$val</code>";
}
}
if (isset($links[$key]) && !$columns[$links[$key]]) {
$link = "edit=" . urlencode($links[$key]);
foreach ($indexes[$links[$key]] as $col => $j) {
$link .= "&where" . urlencode("[" . bracket_escape($col) . "]") . "=" . urlencode($row[$j]);
}
$val = "<a href='" . h(ME . $link) . "'>$val</a>";
}
}
echo "<td>$val";
}
}
echo "</table>\n";
}
$result->free();
}
function is_utf8($val) {
// don't print control chars except \t\r\n
return (preg_match('~~u', $val) && !preg_match('~[\\0-\\x8\\xB\\xC\\xE-\\x1F]~', $val));
}
function shorten_utf8($string, $length = 80, $suffix = "") {
if (!preg_match("~^((?:.|\n){0,$length})(.|\n)?~u", $string, $match)) { // ~s causes trash in $match[2] under some PHP versions
preg_match("(^([\t\r\n -~]{0,$length})(.?))s", $string, $match);
}
return h($match[1]) . $suffix . ($match[2] ? "<em>...</em>" : "");
}
function friendly_url($val) {
// used for blobs and export
return preg_replace('~[^a-z0-9_]~i', '-', $val);
}
function hidden_fields($process, $ignore = array()) {
while (list($key, $val) = each($process)) {
if (is_array($val)) {
foreach ($val as $k => $v) {
$process[$key . "[$k]"] = $v;
}
} elseif (!in_array($key, $ignore)) {
echo '<input type="hidden" name="' . h($key) . '" value="' . h($val) . '">';
}
}
}
function column_foreign_keys($table) {
$return = array();
foreach (foreign_keys($table) as $foreign_key) {
foreach ($foreign_key["source"] as $val) {
$return[$val][] = $foreign_key;
}
}
return $return;
}
function input($field, $value, $function) {
global $types, $adminer;
$name = h(bracket_escape($field["field"]));
echo "<td class='function'>";
if ($field["type"] == "enum") {
echo " <td>" . (isset($_GET["select"]) ? " <label><input type='radio' name='fields[$name]' value='-1' checked><em>" . lang('original') . "</em></label>" : "");
if ($field["null"]) {
echo " <label><input type='radio' name='fields[$name]' value=''" . (($field["null"] ? isset($value) : strlen($value)) || isset($_GET["select"]) ? '' : ' checked') . '>' . ($field["null"] ? '<em>NULL</em>' : '') . '</label>';
}
echo "<input type='radio' name='fields[$name]' value='0'" . ($value === 0 ? ' checked' : '') . '>';
preg_match_all("~'((?:[^']|'')*)'~", $field["length"], $matches);
foreach ($matches[1] as $i => $val) {
$val = stripcslashes(str_replace("''", "'", $val));
$checked = (is_int($value) ? $value == $i+1 : $value === $val);
echo " <label><input type='radio' name='fields[$name]' value='" . ($i+1) . "'" . ($checked ? ' checked' : '') . '>' . h($val) . '</label>';
}
} else {
$functions = (isset($_GET["select"]) ? array("orig" => lang('original')) : array()) + $adminer->editFunctions($field);
$first = array_search("", $functions) + (isset($_GET["select"]) ? 1 : 0);
$onchange = ($first ? " onchange=\"var f = this.form['function[" . addcslashes($name, "\r\n'\\") . "]']; if ($first > f.selectedIndex) f.selectedIndex = $first;\"" : "");
echo (count($functions) > 1 ? "<select name='function[$name]'>" . optionlist($functions, $function) . "</select>" : nbsp($functions[0])) . '<td>';
$input = $adminer->editInput($_GET["edit"], $field, " name='fields[$name]'$onchange", $value); // usage in call is without a table
if (strlen($input)) {
echo $input;
} elseif ($field["type"] == "set") { //! 64 bits
preg_match_all("~'((?:[^']|'')*)'~", $field["length"], $matches);
foreach ($matches[1] as $i => $val) {
$val = stripcslashes(str_replace("''", "'", $val));
$checked = (is_int($value) ? ($value >> $i) & 1 : in_array($val, explode(",", $value), true));
echo " <label><input type='checkbox' name='fields[$name][$i]' value='" . (1 << $i) . "'" . ($checked ? ' checked' : '') . "$onchange>" . h($val) . '</label>';
}
} elseif (strpos($field["type"], "text") !== false) {
echo "<textarea name='fields[$name]' cols='50' rows='12'$onchange>" . h($value) . '</textarea>';
} elseif (ereg('binary|blob', $field["type"])) {
echo (ini_get("file_uploads") ? "<input type='file' name='$name'$onchange>" : lang('File uploads are disabled.'));
} else {
// int(3) is only a display hint
$maxlength = (!ereg('int', $field["type"]) && preg_match('~^([0-9]+)(,([0-9]+))?$~', $field["length"], $match) ? ($match[1] + ($match[3] ? 1 : 0) + ($match[2] && !$field["unsigned"] ? 1 : 0)) : ($types[$field["type"]] ? $types[$field["type"]] + ($field["unsigned"] ? 0 : 1) : 0));
echo "<input name='fields[$name]' value='" . h($value) . "'" . ($maxlength ? " maxlength='$maxlength'" : "") . "$onchange>";
}
}
}
function process_input($field) {
global $dbh, $adminer;
$idf = bracket_escape($field["field"]);
$function = $_POST["function"][$idf];
$value = $_POST["fields"][$idf];
if ($field["type"] == "enum" ? $value == -1 : $function == "orig") {
return false;
} elseif ($field["type"] == "enum" || $field["auto_increment"] ? !strlen($value) : $function == "NULL") {
return "NULL";
} elseif ($field["type"] == "enum") {
return intval($value);
} elseif ($field["type"] == "set") {
return array_sum((array) $value);
} elseif (ereg('binary|blob', $field["type"])) {
$file = get_file($idf);
if (!is_string($file)) {
return false; //! report errors
}
return "_binary" . $dbh->quote($file);
} else {
return $adminer->processInput($field, $value, $function);
}
}
function dump_csv($row) {
foreach ($row as $key => $val) {
if (preg_match("~[\"\n,]~", $val) || (isset($val) && !strlen($val))) {
$row[$key] = '"' . str_replace('"', '""', $val) . '"';
}
}
echo implode(",", $row) . "\n";
}
function apply_sql_function($function, $column) {
return ($function ? ($function == "count distinct" ? "COUNT(DISTINCT " : strtoupper("$function(")) . "$column)" : $column);
}
function is_email($email) {
$atom = '[-a-z0-9!#$%&\'*+/=?^_`{|}~]'; // characters of local-name
$domain = '[a-z0-9]([-a-z0-9]{0,61}[a-z0-9])'; // one domain component
return eregi("^$atom+(\\.$atom+)*@($domain?\\.)+$domain\$", $email);
}
function email_header($header) {
// iconv_mime_encode requires PHP 5, imap_8bit requires IMAP extension
return "=?UTF-8?B?" . base64_encode($header) . "?="; //! split long lines
}