3 function write_config_db($new = false)
5 global $path_to_root, $def_coy, $db_connections, $tb_pref_counter;
6 include_once($path_to_root . "/config_db.php");
10 $n = count($db_connections);
12 $msg .= "/*Connection Information for the database\n";
13 $msg .= "- \$def_coy is the default company that is pre-selected on login\n\n";
14 $msg .= "- host is the computer ip address or name where the database is the default is localhost assuming that the web server is also the sql server\n\n";
15 $msg .= "- user is the user name under which the database should be accessed - need to change to the mysql (or other DB) user set up for purpose\n";
16 $msg .= " NB it is not secure to use root as the user with no password - a user with appropriate privileges must be set up\n\n";
17 $msg .= "- password is the password the user of the database requires to be sent to authorise the above database user\n\n";
18 $msg .= "- DatabaseName is the name of the database as defined in the RDMS being used. Typically RDMS allow many databases to be maintained under the same server.\n";
19 $msg .= " The scripts for MySQL provided use the name logicworks */\n\n\n";
21 $msg .= "\$def_coy = " . $def_coy . ";\n\n";
22 $msg .= "\$tb_pref_counter = " . $tb_pref_counter . ";\n\n";
23 $msg .= "\$db_connections = array (\n";
25 for ($i = 0; $i < $n; $i++)
31 $msg .= "('name' => '" . $db_connections[$i]['name'] . "',\n";
32 $msg .= "\t\t'host' => '" . $db_connections[$i]['host'] . "',\n";
33 $msg .= "\t\t'dbuser' => '" . $db_connections[$i]['dbuser'] . "',\n";
34 $msg .= "\t\t'dbpassword' => '" . $db_connections[$i]['dbpassword'] . "',\n";
35 $msg .= "\t\t'dbname' => '" . $db_connections[$i]['dbname'] . "',\n";
36 $msg .= "\t\t'tbpref' => '" . $db_connections[$i]['tbpref'] . "')";
43 $filename = $path_to_root . "/config_db.php";
44 // Check if the file exists and is writable first.
45 if (file_exists($filename) && is_writable($filename))
47 if (!$zp = fopen($filename, 'w'))
53 if (!fwrite($zp, $msg))
69 function db_create_db($connection)
71 $db = mysql_connect($connection["host"] ,
72 $connection["dbuser"], $connection["dbpassword"]);
73 if (!mysql_select_db($connection["dbname"], $db))
75 $sql = "CREATE DATABASE " . $connection["dbname"] . "";
76 if (!mysql_query($sql))
78 mysql_select_db($connection["dbname"], $db);
83 function db_drop_db($connection)
85 if ($connection["tbpref"] == "")
87 $sql = "DROP DATABASE " . $connection["dbname"] . "";
88 return mysql_query($sql);
92 $res = db_query("show table status");
93 $all_tables = array();
94 while($row = db_fetch($res))
96 // get table structures
97 foreach ($all_tables as $table)
99 if (strpos($table['Name'], $connection["tbpref"]) !== false)
100 db_query("DROP TABLE `".$table['Name'] . "`");
102 //deleting the tables, how??
107 function db_import($filename, $connection)
109 $data_queries = array();
110 $drop_queries = array();
111 $table_queries = array();
113 // uncrompress gziped backup files
114 if (strpos($filename, ".gzip") || strpos($filename, ".GZIP"))
115 $lines = db_ungzip("lines", $filename);
116 elseif (strpos($filename, ".zip") || strpos($filename, ".ZIP"))
117 $lines = db_unzip("lines", $filename);
119 $lines = file("". $filename);
121 // divide insert and create sql queries
122 // $table is set to TRUE if the next line belongs to a create sql query
124 foreach($lines as $line)
128 $line = str_replace("0_", $connection["tbpref"], $line);
129 // the last line did not belong to a 'create' sql query
133 // this line does not, too
134 if (strtolower(substr($line,0,6)) == "insert")
136 $data_queries[] = substr($line, 0, strlen($line) - 1);
138 // this line does not, too
140 elseif (strtolower(substr($line, 0, 20)) == "drop table if exists")
142 $drop_queries[] = substr($line, 0, strlen($line) - 1);
146 elseif (strtolower(substr($line, 0, 6)) == "create")
149 $table_queries[] = $line . "\n";
152 // the current line belongs to a create sql query
157 // create sql query ending in this line
158 if (strtolower(substr($line, 0, 1)) == ")")
160 $table_queries[count($table_queries) - 1] .= $line . "\n";
166 // execute drop tables if exists queries
167 if (is_array($drop_queries))
169 foreach($drop_queries as $drop_query)
172 if (!db_query($drop_query))
175 //if ($CONF['import_error']) echo nl2br($drop_query)."\n<div class=\"bold_left\">".mysql_error()."</div><br>\n";
180 // execute create tables queries
181 if (is_array($table_queries))
183 foreach($table_queries as $table_query)
186 if (!db_query($table_query))
189 //if ($CONF['import_error']) echo nl2br($table_query)."\n<div class=\"bold_left\">".mysql_error()."</div><br>\n";
194 // execute insert data queries
195 if (is_array($data_queries))
197 foreach($data_queries as $data_query)
200 if (!db_query($data_query))
202 //if ($CONF['import_error']) echo $data_query."\n<div class=\"bold_left\">".mysql_error()."</div><br>\n";
208 // show number successful executed querys or if an error did occur
211 //echo "<div class=\"red\">".IM_ERROR.".</div>\n";
214 //echo "<div class=\"green\">".IM_SUCCESS." ".count($table_queries)." ".IM_TABLES." ".count($data_queries)." ".IM_ROWS." (".$import_file.")</div>\n";
215 //$shell_command = C_MYSQL_PATH . " -h $host -u $user -p{$password} $dbname < $filename";
216 //shell_exec($shell_command);
219 // returns the content of the gziped $path backup file. use of $mode see below
220 function db_ungzip($mode, $path)
222 $file_data = gzfile($path);
223 // returns one string or an array of lines
224 if ($mode != "lines")
225 return implode("",$file_data);
230 // returns the content of the ziped $path backup file. use of $mode see below
231 function db_unzip($mode, $path)
234 $all = implode("", file($path));
236 // convert path to name of ziped file
237 $filename = ereg_replace(".*/", "", $path);
238 $filename = substr($filename, 0, strlen($filename) - 4);
240 // compare filname in zip and filename from $_GET
241 if (substr($all, 30, strlen($filename)) != $filename)
244 // exit if names differ
245 //echo F_WRONG_FILE.".";
250 // get the suffix of the filename in hex
251 $crc_bugfix = substr(substr($filename, 0, strlen($filename) - 4), strlen($filename) - 12 - 4);
254 // convert hex to ascii
255 for ($i=0; $i < 12; )
256 $suffix .= chr($crc_bugfix[$i++] . $crc_bugfix[$i++] . $crc_bugfix[$i++]);
258 // remove central directory information (we have always just one ziped file)
259 $comp = substr($all, -(strlen($all) - 30 - strlen($filename)));
260 $comp = substr($comp, 0, (strlen($comp) - 80 - strlen($filename)));
262 // fix the crc bugfix (see function save_to_file)
263 $comp = "x
\9c" . $comp . $suffix;
264 $file_data = gzuncompress($comp);
267 // returns one string or an array of lines
268 if ($mode != "lines")
271 return explode("\n", $file_data);
274 // generates a dump of $db database
275 // $drop and $zip tell if to include the drop table statement or dry to pack
276 function db_export($conn, $filename, $zip='no', $comment='')
279 global $app_title, $version, $power_url, $path_to_root;
283 // set max string size before writing to file
284 $max_size = 1048576 * 2; // 2 MB
285 // changes max size if value can be retrieved
286 if (ini_get("memory_limit"))
287 $max_size = 900000 * ini_get("memory_limit");
289 // set backupfile name
291 $backupfile = $filename . ".gz";
292 elseif ($zip == "zip")
293 $backupfile = $filename . ".zip";
295 $backupfile = $filename;
296 $company = get_company_pref('coy_name');
298 $out="# MySQL dump of database '".$conn["dbname"]."' on host '".$conn["host"]."'\n";
299 $out.="# Backup Date and Time: ".date("Y-m-d H:i")."\n";
300 $out.="# Built by " . $app_title . " " . $version ."\n";
301 $out.="# ".$power_url."\n";
302 $out.="# Company: ".$company."\n";
303 $out.="# User: ".$_SESSION["wa_current_user"]->name."\n\n";
305 // write users comment
308 $out .= "# Comment:\n";
309 $comment=preg_replace("'\n'","\n# ","# ".$comment);
310 //$comment=str_replace("\n", "\n# ", $comment);
311 foreach(explode("\n",$comment) as $line)
316 //$out.="use ".$db.";\n"; we don't use this option.
318 // get auto_increment values and names of all tables
319 $res = db_query("show table status");
320 $all_tables = array();
321 while($row = db_fetch($res))
323 if ($conn["tbpref"] == "" || strpos($row['Name'], $conn["tbpref"]) !== false)
324 $all_tables[] = $row;
326 // get table structures
327 foreach ($all_tables as $table)
329 $res1 = db_query("SHOW CREATE TABLE `" . $table['Name'] . "`");
330 $tmp = db_fetch($res1);
331 $table_sql[$table['Name']] = $tmp["Create Table"];
336 if (isset($table_sql))
338 foreach($table_sql as $tablenme=>$table)
341 // save all tables, needed for creating this table in $fks
342 while (($ref_pos = strpos($tmp_table, " REFERENCES ")) > 0)
344 $tmp_table = substr($tmp_table, $ref_pos + 12);
345 $ref_pos = strpos($tmp_table, "(");
346 $fks[$tablenme][] = substr($tmp_table, 0, $ref_pos);
351 $all_tables = order_sql_tables($all_tables, $fks);
353 // as long as no error occurred
356 //while($row=@mysql_fetch_array($res))
357 foreach ($all_tables as $row)
359 $tablename = $row['Name'];
360 $auto_incr[$tablename] = $row['Auto_increment'];
364 $out.="### Structure of table `".$tablename."` ###\n\n";
366 $out.="DROP TABLE IF EXISTS `".$tablename."`;\n\n";
367 $out.=$table_sql[$tablename];
369 // add auto_increment value
370 if ($auto_incr[$tablename])
371 $out.=" AUTO_INCREMENT=".$auto_incr[$tablename];
378 $out.="### Data of table `".$tablename."` ###\n\n";
380 // check if field types are NULL or NOT NULL
381 $res3 = db_query("SHOW COLUMNS FROM `" . $tablename . "`");
383 $field_type = array();
384 for ($j = 0; $j < db_num_rows($res3); $j++)
386 $row3 = db_fetch($res3);
387 $field_type[] = $row3[2];
390 $res2 = db_query("SELECT * FROM `" . $tablename . "`");
391 for ($j = 0; $j < db_num_rows($res2); $j++)
393 $out .= "INSERT INTO `" . $tablename . "` VALUES (";
394 $row2 = db_fetch_row($res2);
395 // run through each field
396 for ($k = 0; $k < $nf = db_num_fields($res2); $k++)
398 // identify null values and save them as null instead of ''
399 if ($field_type[$k] != "" && $row2[$k] == "")
402 $out .= "'" . db_escape($row2[$k]) . "'";
408 // if saving is successful, then empty $out, else set error flag
409 if (strlen($out) > $max_size && $zip != "zip")
411 if (save_to_file($backupfile, $zip, $out))
418 // an error occurred! Try to delete file and return error status
422 @unlink($path_to_root . BACKUP_PATH . $backupfile);
426 // if saving is successful, then empty $out, else set error flag
427 if (strlen($out) > $max_size && $zip != "zip")
429 if (save_to_file($backupfile, $zip, $out))
436 // an error occurred! Try to delete file and return error status
440 @unlink($path_to_root . BACKUP_PATH . $backupfile);
444 // if (mysql_error()) return "DB_ERROR";
445 //@mysql_close($con);
449 if (save_to_file($backupfile, $zip, $out))
455 @unlink($path_to_root . BACKUP_PATH . $backupfile);
461 // orders the tables in $tables according to the constraints in $fks
462 // $fks musst be filled like this: $fks[tablename][0]=needed_table1; $fks[tablename][1]=needed_table2; ...
463 function order_sql_tables($tables, $fks)
465 // do not order if no contraints exist
470 $new_tables = array();
473 while (count($tables) && $modified == true)
476 foreach ($tables as $key=>$row)
478 // delete from $tables and add to $new_tables
479 if (isset($fks[$row['Name']]))
481 foreach($fks[$row['Name']] as $needed)
483 // go to next table if not all needed tables exist in $existing
484 if (!in_array($needed,$existing))
488 // delete from $tables and add to $new_tables
489 $existing[] = $row['Name'];
490 $new_tables[] = $row;
492 unset($tables[$key]);
500 // probably there are 'circles' in the constraints, bacause of that no proper backups can be created yet
501 // TODO: this will be fixed sometime later through using 'alter table' commands to add the constraints after generating the tables
502 // until now, just add the lasting tables to $new_tables, return them and print a warning
503 foreach($tables as $row)
504 $new_tables[] = $row;
505 echo "<div class=\"red_left\">THIS DATABASE SEEMS TO CONTAIN 'RING CONSTRAINTS'. WA DOES NOT SUPPORT THEM. PROBABLY THE FOLOWING BACKUP IS DEFECT!</div>";
510 // saves the string in $fileData to the file $backupfile as gz file or not ($zip)
511 // returns backup file name if name has changed (zip), else TRUE. If saving failed, return value is FALSE
512 function save_to_file($backupfile, $zip, $fileData)
514 global $path_to_root;
518 if ($zp = @gzopen($path_to_root . BACKUP_PATH . $backupfile, "a9"))
520 @gzwrite($zp, $fileData);
529 // $zip contains the timestamp
531 elseif ($zip == "zip")
533 // based on zip.lib.php 2.2 from phpMyBackupAdmin
534 // offical zip format: http://www.pkware.com/appnote.txt
536 // End of central directory record
537 $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00";
539 // "local file header" segment
540 $unc_len = strlen($fileData);
541 $crc = crc32($fileData);
542 $zdata = gzcompress($fileData);
544 // string needed for decoding (because of crc bug)
545 //$name_suffix = substr($zdata, -4, 4);
546 //$name_suffix2 = "_";
547 //for ($i = 0; $i < 4; $i++)
548 // $name_suffix2 .= sprintf("%03d", ord($name_suffix[$i]));
549 //$backupfile = substr($backupfile, 0, strlen($backupfile) - 8) . $name_suffix2 . ".sql.zip";
550 $name = substr($backupfile, 0, strlen($backupfile) -4);
553 $zdata = substr(substr($zdata, 0, strlen($zdata) - 4), 2);
554 $c_len = strlen($zdata);
557 $timearray = getdate($zip);
558 $dostime = (($timearray['year'] - 1980) << 25) | ($timearray['mon'] << 21) | ($timearray['mday'] << 16) |
559 ($timearray['hours'] << 11) | ($timearray['minutes'] << 5) | ($timearray['seconds'] >> 1);
560 $dtime = dechex($dostime);
561 $hexdtime = "\x" . $dtime[6] . $dtime[7] . "\x" . $dtime[4].$dtime[5] . "\x" . $dtime[2] . $dtime[3] . "\x" . $dtime[0] . $dtime[1];
562 eval('$hexdtime="' . $hexdtime . '";');
564 // ver needed to extract, gen purpose bit flag, compression method, last mod time and date
565 $sub1 = "\x14\x00" . "\x00\x00" . "\x08\x00" . $hexdtime;
567 // crc32, compressed filesize, uncompressed filesize
568 $sub2 = pack('V', $crc) . pack('V', $c_len) . pack('V', $unc_len);
570 $fr = "\x50\x4b\x03\x04" . $sub1. $sub2;
572 // length of filename, extra field length
573 $fr .= pack('v', strlen($name)) . pack('v', 0);
576 // "file data" segment and "data descriptor" segment (optional but necessary if archive is not served as file)
577 $fr .= $zdata . $sub2;
579 // now add to central directory record
580 $cdrec = "\x50\x4b\x01\x02";
581 $cdrec .= "\x00\x00"; // version made by
582 $cdrec .= $sub1 . $sub2;
584 // length of filename, extra field length, file comment length, disk number start, internal file attributes, external file attributes - 'archive' bit set, offset
585 $cdrec .= pack('v', strlen($name)) . pack('v', 0) . pack('v', 0) . pack('v', 0) . pack('v', 0) . pack('V', 32) . pack('V',0);
589 $fileData = $fr . $cdrec . $eof_ctrl_dir;
591 // total # of entries "on this disk", total # of entries overall, size of central dir, offset to start of central dir, .zip file comment length
592 $fileData .= pack('v', 1) . pack('v', 1) . pack('V', strlen($cdrec)) . pack('V', strlen($fr)) . "\x00\x00";
594 if ($zp = @fopen($path_to_root . BACKUP_PATH . $backupfile, "a"))
596 @fwrite($zp, $fileData);
609 if ($zp = @fopen($path_to_root . BACKUP_PATH . $backupfile, "a"))
611 @fwrite($zp, $fileData);