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154 lines
6.1 KiB
PHP
154 lines
6.1 KiB
PHP
<?php
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namespace MRBS;
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// Assigns a UID to all existing bookings that don't already have one. They should
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// do in theory, but a bug (https://sourceforge.net/p/mrbs/bugs/334/) resulted in some
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// not doing so. The code is based on Upgrade 24.
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// This upgrade assigns a UID to all existing bookings and a RECURRENCE-ID to all
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// existing members of a series. However the RECURRENCE-ID is not necessarily going
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// to be correct if the entry is a modified entry (ie entry_type=ENTRY_RPT_CHANGED).
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// That's because the RECURRENCE_ID is supposed to be the *original* start date and
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// time of that entry, and this is information that we no longer have. (We do know
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// the time, as we have the start time in the repeat table, but it is not trivial to
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// take advantage of it as we'd have to account for DST changes and we still don't
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// have the date. So I've taken the view here that it's not worth bothering about
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// as this upgrade procedure is only used once for existing entries).
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global $dbsys, $server;
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// There's the option here to display some timing information as this upgrade
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// could take a while
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$display_timing = FALSE;
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$n_entry = $upgrade_handle->query1("SELECT COUNT(*) FROM " . _tbl('entry'));
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$n_repeat = $upgrade_handle->query1("SELECT COUNT(*) FROM " . _tbl('repeat'));
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if ($display_timing)
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{
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echo "Upgrade 47: $n_entry entry rows and $n_repeat repeat rows";
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}
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$start_clock = get_microtime();
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// In these queries we set timestamp=timestamp to prevent it being automatically set
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// to the current time (only applies to MySQL - PostgreSQL timestamps don't update)
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// MySQL (mysql and mysqli)
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// ------------------------
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if ($dbsys != "pgsql")
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{
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// Give everything in the repeat table, that doesn't already have one, an ical uid
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$sql = "UPDATE " . _tbl('repeat') . "
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SET ical_uid=CONCAT(CAST(id AS char), '-', UUID()),
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timestamp=timestamp
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WHERE ical_uid=''";
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$upgrade_handle->command($sql);
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// Now go through the entry table and give all entries, that don't have an ical uid
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// and are members of a series, the ical_uid from the corresponding uid from the
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// repeat table
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$sql = "UPDATE " . _tbl('entry') . " E, " . _tbl('repeat') . " R
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SET E.ical_uid=R.ical_uid,
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E.timestamp=E.timestamp,
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R.timestamp=R.timestamp
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WHERE E.ical_uid=''
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AND E.repeat_id=R.id";
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$upgrade_handle->command($sql);
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// Finally give a recurrence id to any entry in the entry table that hasn't got one
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// and should have one - ie if it is a member of a series
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$sql = "UPDATE " . _tbl('entry') . "
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SET ical_recur_id=DATE_FORMAT(CONVERT_TZ(FROM_UNIXTIME(start_time), @@session.time_zone, '+0:00'), '%Y%m%dT%H%i%sZ'),
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timestamp=timestamp
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WHERE repeat_id!=0
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AND ical_recur_id=''";
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$upgrade_handle->command($sql);
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// Give all the individual entries, that haven't already got one, an ical uid
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// (There shouldn't be any of these as the bug was only affecting repeats)
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$sql = "UPDATE " . _tbl('entry') . "
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SET ical_uid=CONCAT(CAST(id AS char), '-', UUID()),
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timestamp=timestamp
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WHERE ical_uid='' AND repeat_id IS NULL";
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$upgrade_handle->command($sql);
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// Sequence numbers were being generated correctly under the bug, so we don't need to worry about them
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}
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// PostgreSQL
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// ----------
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else
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{
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// PostgreSQL doesn't have a UUID() function as standard, so we have to construct
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// our own UUID.
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//
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// We will generate a uid of the form "MRBS-uniqid-MD5hash@domain_name"
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// where uniqid is time based and is generated by uniqid() and the
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// MD5hash is the first 8 characters of the MD5 hash of $str concatenated
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// with a random number. [This is the same process used by the MRBS function
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// generate_global_uid()]
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if (empty($server['SERVER_NAME']))
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{
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$domain_name = 'MRBS';
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}
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elseif (mb_strpos($server['SERVER_NAME'], 'www.') === 0)
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{
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$domain_name = substr($server['SERVER_NAME'], 4);
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}
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else
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{
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$domain_name = $server['SERVER_NAME'];
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}
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// Give everything in the repeat table, that doesn't already have one, an ical uid
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$sql = "UPDATE " . _tbl('repeat') . "
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SET ical_uid='MRBS-' || CAST(id AS varchar(255)) || '-' || CURRENT_DATE || CURRENT_TIME || '-' || SUBSTRING((MD5(name || CAST(RANDOM() AS varchar(255)))) from 1 for 8) || '@$domain_name'
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WHERE ical_uid=''";
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$upgrade_handle->command($sql);
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// Now go through the entry table and give all entries, that don't have an ical uid
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// and are members of a series, the ical_uid from the corresponding uid from the
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// repeat table. (The SQL is slightly different from the MySQL case)
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$sql = "UPDATE " . _tbl('entry') . " E
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SET ical_uid=R.ical_uid
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FROM " . _tbl('repeat') . " AS R
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WHERE E.ical_uid=''
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AND E.repeat_id=R.id";
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$upgrade_handle->command($sql);
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// Finally give a recurrence id to any entry in the entry table that hasn't got one
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// and should have one - ie if it is a member of a series (The SQL is slightly
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// different from the MySQL case)
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$sql = "UPDATE " . _tbl('entry') . "
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SET ical_recur_id=TO_CHAR(TIMESTAMP 'epoch' + start_time * INTERVAL '1 second', 'YYYYMMDD\"T\"HH24MISS\"Z\"')
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WHERE repeat_id!=0
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AND ical_recur_id=''";
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$upgrade_handle->command($sql);
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// Give all the individual entries, that haven't already got one, an ical uid
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// (There shouldn't be any of these as the bug was only affecting repeats)
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$sql = "UPDATE " . _tbl('entry') . "
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SET ical_uid='MRBS-' || CAST(id AS varchar(255)) || '-' || CURRENT_DATE || CURRENT_TIME || '-' || SUBSTRING((MD5(name || CAST(RANDOM() AS varchar(255)))) from 1 for 8) || '@$domain_name'
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WHERE ical_uid=''
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AND repeat_id IS NULL";
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$upgrade_handle->command($sql);
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// Sequence numbers were being generated correctly under the bug, so we don't need to worry about them
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}
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$stop_clock = get_microtime();
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$clock_diff = $stop_clock - $start_clock;
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if (is_float($start_clock))
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{
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$clock_diff = sprintf('%.3f', $clock_diff);
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}
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if ($display_timing)
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{
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echo " processed in $clock_diff seconds<br>\n";
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}
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