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@ -730,6 +730,7 @@ function item_store($arr,$force_parent = false, $notify = false, $dontcache = fa |
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if ($arr["uid"] == 0) { |
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$arr["global"] = true; |
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// Set the global flag on all items if this was a global item entry
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q("UPDATE `item` SET `global` = 1 WHERE `uri` = '%s'", dbesc($arr["uri"])); |
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} else { |
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$isglobal = q("SELECT `global` FROM `item` WHERE `uid` = 0 AND `uri` = '%s'", dbesc($arr["uri"])); |
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@ -763,6 +764,17 @@ function item_store($arr,$force_parent = false, $notify = false, $dontcache = fa |
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return 0; |
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} |
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// Check for already added items.
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// There is a timing issue here that sometimes creates double postings.
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// An unique index would help - but the limitations of MySQL (maximum size of index values) prevent this.
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if ($arr["uid"] == 0) { |
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$r = qu("SELECT `id` FROM `item` WHERE `uri` = '%s' AND `uid` = 0 LIMIT 1", dbesc(trim($arr['uri']))); |
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if (dbm::is_result($r)) { |
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logger('Global item already stored. URI: '.$arr['uri'].' on network '.$arr['network'], LOGGER_DEBUG); |
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return 0; |
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} |
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} |
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// Store the unescaped version
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$unescaped = $arr; |
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@ -777,41 +789,67 @@ function item_store($arr,$force_parent = false, $notify = false, $dontcache = fa |
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. implode("`, `", array_keys($arr)) |
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. "`) VALUES ('" |
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. implode("', '", array_values($arr)) |
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. "')" ); |
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. "')"); |
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// And restore it
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$arr = $unescaped; |
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// find the item that we just created
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$r = q("SELECT `id` FROM `item` WHERE `uri` = '%s' AND `uid` = %d AND `network` = '%s' ORDER BY `id` ASC", |
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// When the item was successfully stored we fetch the ID of the item.
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if (dbm::is_result($r)) { |
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$r = q("SELECT LAST_INSERT_ID() AS `item-id`"); |
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if (dbm::is_result($r)) { |
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$current_post = $r[0]['item-id']; |
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} else { |
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// This shouldn't happen
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$current_post = 0; |
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} |
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} else { |
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// This can happen - for example - if there are locking timeouts.
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logger("Item wasn't stored - we quit here."); |
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q("COMMIT"); |
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return 0; |
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} |
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if ($current_post == 0) { |
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// This is one of these error messages that never should occur.
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logger("couldn't find created item - we better quit now."); |
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q("COMMIT"); |
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return 0; |
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} |
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// How much entries have we created?
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// We wouldn't need this query when we could use an unique index - but MySQL has length problems with them.
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$r = q("SELECT COUNT(*) AS `entries` FROM `item` WHERE `uri` = '%s' AND `uid` = %d AND `network` = '%s'", |
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dbesc($arr['uri']), |
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intval($arr['uid']), |
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dbesc($arr['network']) |
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); |
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if (count($r) > 1) { |
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// There are duplicates. Keep the oldest one, delete the others
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logger('item_store: duplicated post occurred. Removing newer duplicates. uri = '.$arr['uri'].' uid = '.$arr['uid']); |
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q("DELETE FROM `item` WHERE `uri` = '%s' AND `uid` = %d AND `network` = '%s' AND `id` > %d", |
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dbesc($arr['uri']), |
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intval($arr['uid']), |
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dbesc($arr['network']), |
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intval($r[0]["id"]) |
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); |
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if (!dbm::is_result($r)) { |
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// This shouldn't happen, since COUNT always works when the database connection is there.
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logger("We couldn't count the stored entries. Very strange ..."); |
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q("COMMIT"); |
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return 0; |
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} elseif (count($r)) { |
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} |
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$current_post = $r[0]['id']; |
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logger('item_store: created item ' . $current_post); |
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if ($r[0]["entries"] > 1) { |
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// There are duplicates. We delete our just created entry.
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logger('Duplicated post occurred. uri = '.$arr['uri'].' uid = '.$arr['uid']); |
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item_set_last_item($arr); |
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} else { |
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logger('item_store: could not locate created item'); |
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// Yes, we could do a rollback here - but we are having many users with MyISAM.
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q("DELETE FROM `item` WHERE `id` = %d", intval($current_post)); |
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q("COMMIT"); |
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return 0; |
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} elseif ($r[0]["entries"] == 0) { |
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// This really should never happen since we quit earlier if there were problems.
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logger("Something is terribly wrong. We haven't found our created entry."); |
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q("COMMIT"); |
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return 0; |
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} |
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logger('item_store: created item '.$current_post); |
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item_set_last_item($arr); |
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if (!$parent_id || ($arr['parent-uri'] === $arr['uri'])) |
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$parent_id = $current_post; |
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@ -855,19 +893,6 @@ function item_store($arr,$force_parent = false, $notify = false, $dontcache = fa |
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); |
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} |
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/** |
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* If this is now the last-child, force all _other_ children of this parent to *not* be last-child |
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*/ |
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if ($arr['last-child']) { |
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$r = q("UPDATE `item` SET `last-child` = 0 WHERE `parent-uri` = '%s' AND `uid` = %d AND `id` != %d", |
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dbesc($arr['uri']), |
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intval($arr['uid']), |
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intval($current_post) |
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); |
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} |
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$deleted = tag_deliver($arr['uid'],$current_post); |
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// current post can be deleted if is for a community page and no mention are
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@ -884,19 +909,35 @@ function item_store($arr,$force_parent = false, $notify = false, $dontcache = fa |
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logger('item_store: new item not found in DB, id ' . $current_post); |
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} |
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if ($arr['parent-uri'] === $arr['uri']) { |
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add_thread($current_post); |
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} else { |
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update_thread($parent_id); |
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} |
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q("COMMIT"); |
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// Due to deadlock issues with the "term" table we are doing these steps after the commit.
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// This is not perfect - but a workable solution until we found the reason for the problem.
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create_tags_from_item($current_post); |
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create_files_from_item($current_post); |
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// Only check for notifications on start posts
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if ($arr['parent-uri'] === $arr['uri']) { |
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add_thread($current_post); |
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q("COMMIT"); |
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/** |
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* If this is now the last-child, force all _other_ children of this parent to *not* be last-child |
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* It is done after the transaction to avoid dead locks. |
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*/ |
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if ($arr['last-child']) { |
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$r = q("UPDATE `item` SET `last-child` = 0 WHERE `parent-uri` = '%s' AND `uid` = %d AND `id` != %d", |
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dbesc($arr['uri']), |
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intval($arr['uid']), |
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intval($current_post) |
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); |
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} |
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if ($arr['parent-uri'] === $arr['uri']) { |
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add_shadow_thread($current_post); |
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} else { |
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update_thread($parent_id); |
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q("COMMIT"); |
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add_shadow_entry($arr); |
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} |
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