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Update blob streaming to match the current API and use the PBMS PHP extension.

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This commit is contained in:
Barry Leslie
2010-07-12 15:39:06 -07:00
committed by Marc Delisle
parent e65625ce1e
commit f8653e5803
16 changed files with 428 additions and 1216 deletions
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770
libraries/blobstreaming.lib.php
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@@ -13,7 +13,6 @@
* @uses PMA_Config::set()
* @uses PMA_BS_SetVariables()
* @uses PMA_BS_GetVariables()
* @uses PMA_BS_SetFieldReferences()
* @uses PMA_cacheSet()
* @uses PMA_cacheGet()
* @return boolean
@@ -33,7 +32,7 @@ function checkBLOBStreamingPlugins()
if (PMA_cacheGet('skip_blobstreaming', true)) {
return false;
}
// If we don't know that we can skip blobstreaming, we continue
// verifications; anyway, in case we won't skip blobstreaming,
// we still need to set some variables in non-persistent settings,
@@ -63,69 +62,38 @@ function checkBLOBStreamingPlugins()
$serverCfg['socket'] = "";
}
$allPluginsExist = false;
$has_blobstreaming = false;
if (PMA_MYSQL_INT_VERSION >= 50109) {
$PMA_Config->set('PBXT_NAME', 'pbxt');
$PMA_Config->set('PBMS_NAME', 'pbms');
$required_plugins[$PMA_Config->get('PBXT_NAME')]['Library'] = 'libpbxt.so';
$required_plugins[$PMA_Config->get('PBMS_NAME')]['Library'] = 'libpbms.so';
$number_of_required_plugins_found = 0;
// Retrieve MySQL plugins
$existing_plugins = PMA_DBI_fetch_result('SHOW PLUGINS');
foreach ($existing_plugins as $one_existing_plugin) {
// check if required plugins exist
foreach ($required_plugins as $one_required_plugin) {
if ( strtolower($one_existing_plugin['Library']) == strtolower($one_required_plugin['Library'])
&& $one_existing_plugin['Status'] == "ACTIVE") {
$number_of_required_plugins_found++;
}
}
if (2 == $number_of_required_plugins_found) {
$allPluginsExist = true;
break;
}
if ( strtolower($one_existing_plugin['Library']) == 'libpbms.so'
&& $one_existing_plugin['Status'] == "ACTIVE") {
$has_blobstreaming = true;
break;
}
}
unset($required_plugins, $existing_plugins, $one_required_plugin, $one_existing_plugin, $number_of_required_plugins_found);
unset($existing_plugins, $one_existing_plugin);
}
// set variable indicating BS plugin existence
$PMA_Config->set('BLOBSTREAMING_PLUGINS_EXIST', $allPluginsExist);
$PMA_Config->set('BLOBSTREAMING_PLUGINS_EXIST', $has_blobstreaming);
if ($allPluginsExist) {
// retrieve BS variables from PMA configuration
$bs_set_variables = array();
$bs_set_variables[$PMA_Config->get('PBMS_NAME') . '_garbage_threshold'] = (isset($serverCfg['bs_garbage_threshold'])) ? $serverCfg['bs_garbage_threshold'] : NULL;
$bs_set_variables[$PMA_Config->get('PBMS_NAME') . '_repository_threshold'] = (isset($serverCfg['bs_repository_threshold'])) ? $serverCfg['bs_repository_threshold'] : NULL;
$bs_set_variables[$PMA_Config->get('PBMS_NAME') . '_temp_blob_timeout'] = (isset($serverCfg['bs_temp_blob_timeout'])) ? $serverCfg['bs_temp_blob_timeout'] : NULL;
$bs_set_variables[$PMA_Config->get('PBMS_NAME') . '_temp_log_threshold'] = (isset($serverCfg['bs_temp_log_threshold'])) ? $serverCfg['bs_temp_log_threshold'] : NULL;
// set BS variables to PMA configuration defaults
PMA_BS_SetVariables($bs_set_variables);
// retrieve updated BS variables (configurable and unconfigurable)
$bs_variables = PMA_BS_GetVariables();
// if no BS variables exist, set plugin existence to false and return
if ($has_blobstreaming) {
$bs_variables = PMA_BS_GetVariables();
// if no BS variables exist, set plugin existence to false and return
if (count($bs_variables) <= 0) {
$PMA_Config->set('BLOBSTREAMING_PLUGINS_EXIST', FALSE);
PMA_cacheSet('skip_blobstreaming', true, true);
return FALSE;
} // end if (count($bs_variables) <= 0)
// switch on BS field references
if (strtolower($bs_variables[$PMA_Config->get('PBMS_NAME') . '_field_references']) == "off") {
if (! PMA_BS_SetFieldReferences('ON')) {
PMA_cacheSet('skip_blobstreaming', true, true);
return FALSE;
}
}
// get BS server port
$BS_PORT = $bs_variables[$PMA_Config->get('PBMS_NAME') . '_port'];
// get BS server port
$BS_PORT = $bs_variables['pbms_port'];
// if no BS server port exists, set plugin existance to false and return
if (! $BS_PORT) {
@@ -138,22 +106,15 @@ function checkBLOBStreamingPlugins()
$PMA_Config->set('BLOBSTREAMING_PORT', $BS_PORT);
$PMA_Config->set('BLOBSTREAMING_HOST', $serverCfg['host']);
$PMA_Config->set('BLOBSTREAMING_SERVER', $serverCfg['host'] . ':' . $BS_PORT);
$PMA_Config->set('CURL_EXISTS', FALSE);
$PMA_Config->set('PHP_PBMS_EXISTS', FALSE);
$PMA_Config->set('FILEINFO_EXISTS', FALSE);
// check if CURL exists
if (function_exists("curl_init")) {
// initialize curl handler
$curlHnd = curl_init();
// CURL exists, set necessary variable and close resource
if (! empty($curlHnd)) {
$PMA_Config->set('CURL_EXISTS', TRUE);
curl_close($curlHnd);
} // end if (!empty($curlHnd))
} // end if (function_exists("curl_init"))
// check if PECL's fileinfo library exist
// Check to see if the BLOB Streaming PHP extension is loaded
if (extension_loaded("PBMS")) {
$PMA_Config->set('PHP_PBMS_EXISTS', TRUE);
}
// check if PECL's fileinfo library exist
$finfo = NULL;
if (function_exists("finfo_open")) {
@@ -165,180 +126,15 @@ function checkBLOBStreamingPlugins()
$PMA_Config->set('FILEINFO_EXISTS', TRUE);
finfo_close($finfo);
} // end if (!empty($finfo))
} else {
PMA_cacheSet('skip_blobstreaming', true, true);
return FALSE;
} // end if ($allPluginsExist)
$bs_tables = array();
// specify table structure for BS reference table
$bs_tables[$PMA_Config->get('PBMS_NAME') . '_reference'] = array();
$bs_tables[$PMA_Config->get('PBMS_NAME') . '_reference']['struct'] = <<<EOD
CREATE TABLE {$PMA_Config->get('PBMS_NAME')}_reference
(
Table_name CHAR(64) COMMENT 'The name of the referencing table',
Blob_id BIGINT COMMENT 'The BLOB reference number - part of the BLOB URL',
Column_name CHAR(64) COMMENT 'The column name of the referencing field',
Row_condition VARCHAR(255) COMMENT 'This condition identifies the row in the table',
Blob_url VARCHAR(200) COMMENT 'The BLOB URL for HTTP GET access',
Repository_id INT COMMENT 'The repository file number of the BLOB',
Repo_blob_offset BIGINT COMMENT 'The offset in the repository file',
Blob_size BIGINT COMMENT 'The size of the BLOB in bytes',
Deletion_time TIMESTAMP COMMENT 'The time the BLOB was deleted',
Remove_in INT COMMENT 'The number of seconds before the reference/BLOB is removed perminently',
Temp_log_id INT COMMENT 'Temporary log number of the referencing deletion entry',
Temp_log_offset BIGINT COMMENT 'Temporary log offset of the referencing deletion entry'
) ENGINE=PBMS;
EOD;
// specify table structure for BS repository table
$bs_tables[$PMA_Config->get('PBMS_NAME') . '_repository'] = array();
$bs_tables[$PMA_Config->get('PBMS_NAME') . '_repository']['struct'] = <<<EOD
CREATE TABLE {$PMA_Config->get('PBMS_NAME')}_repository
(
Repository_id INT COMMENT 'The repository file number',
Repo_blob_offset BIGINT COMMENT 'The offset of the BLOB in the repository file',
Blob_size BIGINT COMMENT 'The size of the BLOB in bytes',
Head_size SMALLINT UNSIGNED COMMENT 'The size of the BLOB header - proceeds the BLOB data',
Access_code INT COMMENT 'The 4-byte authorisation code required to access the BLOB - part of the BLOB URL',
Creation_time TIMESTAMP COMMENT 'The time the BLOB was created',
Last_ref_time TIMESTAMP COMMENT 'The last time the BLOB was referenced',
Last_access_time TIMESTAMP COMMENT 'The last time the BLOB was accessed (read)',
Content_type CHAR(128) COMMENT 'The content type of the BLOB - returned by HTTP GET calls',
Blob_data LONGBLOB COMMENT 'The data of this BLOB'
) ENGINE=PBMS;
EOD;
// specify table structure for BS custom content type table
$bs_tables[$PMA_Config->get('PBMS_NAME') . '_custom_content_type'] = array();
$bs_tables[$PMA_Config->get('PBMS_NAME') . '_custom_content_type']['struct'] = <<<EOD
CREATE TABLE {$PMA_Config->get('PBMS_NAME')}_custom_content_type
(
Blob_url VARCHAR(200) COMMENT 'The BLOB URL for HTTP GET access',
Content_type VARCHAR(255) COMMENT 'The custom MIME type for a given BLOB reference as specified by the user',
PRIMARY KEY(Blob_url)
);
EOD;
// add BS tables to PMA configuration
$PMA_Config->set('BLOBSTREAMING_TABLES', $bs_tables);
} // end if ($has_blobstreaming)
return TRUE;
}
/**
* checks for databases that support BLOBStreaming
*
* @access public
* @uses PMA_GetDatabases()
* @uses PMA_TablesExist()
* @uses PMA_Config::set()
*/
function checkBLOBStreamableDatabases()
{
// load PMA configuration
$PMA_Config = $GLOBALS['PMA_Config'];
$serverCfg = $GLOBALS['cfg']['Server'];
// retrieve BS tables from PMA configuration
$session_bs_tables = $PMA_Config->get('BLOBSTREAMING_TABLES');
$bs_databases = array();
$bs_tables = array();
// return if BS tables do not exist
if (!$session_bs_tables)
return;
foreach ($session_bs_tables as $table_key=>$table)
{
$bs_tables[$table_key] = array();
$bs_tables[$table_key]['Exists'] = FALSE;
}
// retrieve MySQL databases
$databases = PMA_GetDatabases();
// check if BS tables exist for each database
foreach ($databases as $db_key=>$db_name)
{
$bs_databases[$db_name] = $bs_tables;
PMA_TablesExist($bs_databases[$db_name], $db_name);
}
// set BS databases in PMA configuration
$PMA_Config->set('BLOBSTREAMABLE_DATABASES', $bs_databases);
}
/**
* checks whether a given set of tables exist in a given database
*
* @access public
* @param array - list of tables to look for
* @param string - name of database
* @uses PMA_DBI_select_db()
* @uses PMA_DBI_query()
* @uses PMA_DBI_fetch_assoc()
*/
function PMA_TablesExist(&$tables, $db_name)
{
// select specified database
PMA_DBI_select_db($db_name);
// run query to retrieve tables in specified database
$query = "SHOW TABLES";
$result = PMA_DBI_query($query);
// while there are records to parse
while ($data = @PMA_DBI_fetch_assoc($result))
{
$state = TRUE;
// check if necessary tables exist
foreach ($tables as $table_key=>$table)
if (!$table['Exists'])
if ($data['Tables_in_' . $db_name] == $table_key)
$tables[$table_key]['Exists'] = TRUE;
else
if ($state)
$state = FALSE;
// break if necessary tables are found before all records are parsed
if ($state)
break;
} // end while ($data = @PMA_DBI_fetch_assoc($result))
}
/**
* returns a list of databases
*
* @access public
* @uses PMA_DBI_query()
* @uses PMA_DBI_fetch_assoc()
* @return array - list of databases acquired via MySQL
*/
function PMA_GetDatabases()
{
// run query to retrieve databases
$query = "SHOW DATABASES";
$result = PMA_DBI_query($query);
$databases = array();
// while there are records to parse
while ($data = @PMA_DBI_fetch_assoc($result))
$databases[] = $data['Database'];
// return list of databases
return $databases;
}
/**
* sets BLOBStreaming variables to a list of specified arguments
* @access public
@@ -388,7 +184,7 @@ function PMA_BS_GetVariables()
return NULL;
// run query to retrieve BS variables
$query = "SHOW VARIABLES LIKE '%" . $PMA_Config->get('PBMS_NAME') . "%'";
$query = "SHOW VARIABLES LIKE '%pbms%'";
$result = PMA_DBI_query($query);
$BS_Variables = array();
@@ -401,313 +197,245 @@ function PMA_BS_GetVariables()
return $BS_Variables;
}
/**
* sets the BLOBStreaming global field references to ON/OFF
*
* @access public
* @param string - ON or OFF
* @uses PMA_Config::get()
* @uses PMA_sqlAddslashes()
* @uses PMA_DBI_query()
* @return boolean - success/failure of query execution
*/
function PMA_BS_SetFieldReferences($val)
//========================
//========================
function PMA_BS_ReportPBMSError($msg)
{
$tmp_err = pbms_error();
PMA_showMessage("PBMS error, $msg $tmp_err");
}
//------------
function PMA_do_connect($db_name, $quiet)
{
// load PMA configuration
$PMA_Config = $GLOBALS['PMA_Config'];
// return if unable to load PMA configuration
if (empty($PMA_Config))
return FALSE;
// set field references to value specified
$query = "SET GLOBAL " . $PMA_Config->get('PBMS_NAME') . "_field_references=" . PMA_sqlAddslashes($val);
$result = PMA_DBI_try_query($query, null, 0);
// get last known error (if applicable)
PMA_DBI_getError();
// return success of query execution
if ($result && 0 == $GLOBALS['errno'])
return TRUE;
else
return FALSE;
}
/**
* gets the SQL table definition for a given BLOBStreaming table
*
* @access public
* @param string - table name
* @uses PMA_Config::get()
* @return string - SQL table definition
*/
function PMA_BS_GetTableStruct($tbl_name)
{
// retrieve table structures for BS tables
$bs_tables = $GLOBALS['PMA_Config']->get('BLOBSTREAMING_TABLES');
// return if tables don't exist
if (!$bs_tables)
return;
// return if specified table doesn't exist in collection of BS tables
if (!isset($bs_tables[$tbl_name]))
return;
// return specified table's structure
return $bs_tables[$tbl_name]['struct'];
}
/**
* creates the BLOBStreaming tables for a given database
*
* @access public
* @param string - database name
* @uses PMA_Config::get()
* @uses PMA_DBI_select_db()
* @uses PMA_DBI_query()
* @uses PMA_BS_GetTableStruct()
* @return boolean - success/failure of transactional query execution
*/
function PMA_BS_CreateTables($db_name)
{
// retrieve BS tables
$bs_tables = $GLOBALS['PMA_Config']->get('BLOBSTREAMING_TABLES');
// select specified database
PMA_DBI_select_db($db_name);
// create necessary BS tables for specified database
foreach ($bs_tables as $table_key=>$table)
{
$result = PMA_DBI_query(PMA_BS_GetTableStruct($table_key));
// return false if query execution fails
if (!$result)
return FALSE;
}
// return true on success
return TRUE;
}
/**
* drops BLOBStreaming tables for a given database
*
* @access public
* @param string - database name
* @uses PMA_Config::get()
* @uses PMA_DBI_select_db()
* @uses PMA_backquote()
* @uses PMA_DBI_query()
* @return boolean - success/failure of transactional query execution
*/
function PMA_BS_DropTables($db_name)
{
// load PMA configuration
$PMA_Config = $GLOBALS['PMA_Config'];
// return if unable to load PMA configuration
if (empty($PMA_Config))
return FALSE;
// retrieve BS tables
$bs_tables = $PMA_Config->get('BLOBSTREAMING_TABLES');
// select specified database
PMA_DBI_select_db($db_name);
// drop BS tables
foreach ($bs_tables as $table_key=>$table)
{
$query = "DROP TABLE IF EXISTS " . PMA_backquote($table_key);
$result = PMA_DBI_query($query);
// return false if query execution fails
if (!$result)
return FALSE;
}
// return true on success
return TRUE;
}
/**
* returns the field name for a primary key of a given table in a given database
*
* @access public
* @param string - database name
* @param string - table name
* @uses PMA_DBI_select_db()
* @uses PMA_backquote()
* @uses PMA_DBI_query()
* @uses PMA_DBI_fetch_assoc()
* @return string - field name for primary key
*/
function PMA_BS_GetPrimaryField($db_name, $tbl_name)
{
// load PMA configuration
$PMA_Config = $GLOBALS['PMA_Config'];
// return if unable to load PMA configuration
if (empty($PMA_Config))
return FALSE;
// select specified database
PMA_DBI_select_db($db_name);
// retrieve table fields
$query = "SHOW FULL FIELDS FROM " . PMA_backquote($tbl_name);
$result = PMA_DBI_query($query);
// while there are records to parse
while ($data = PMA_DBI_fetch_assoc($result))
if ("PRI" == $data['Key'])
return $data['Field'];
// return NULL on no primary key
return NULL;
}
/**
* checks whether a BLOB reference exists in the BLOB repository
*
* @access public
* @param string - BLOB reference
* @param string - database name
* @uses PMA_DBI_select_db()
* @uses PMA_backquote()
* @uses PMA_Config::get()
* @uses PMA_sqlAddslashes()
* @uses PMA_DBI_query()
* @return boolean - existence of BLOB reference
*/
function PMA_BS_ReferenceExists($bs_reference, $db_name)
{
$referenceExists = FALSE;
// return false on invalid BS reference
if (strlen ($bs_reference) < strlen ("~*$db_name/~") || "~*$db_name/~" != substr ($bs_reference, 0, strlen ($db_name) + 4))
return $referenceExists;
// load PMA configuration
$PMA_Config = $GLOBALS['PMA_Config'];
// return if unable to load PMA configuration
if (empty($PMA_Config))
return $referenceExists;
// select specified database
PMA_DBI_select_db($db_name);
// run query on BS reference retrieval
$query = "SELECT * FROM " . PMA_backquote($PMA_Config->get('PBMS_NAME') . "_reference") . " WHERE Blob_url='" . PMA_sqlAddslashes($bs_reference) . "'";
$result = PMA_DBI_query($query);
// if record exists
if ($data = @PMA_DBI_fetch_assoc($result))
$referenceExists = TRUE;
// return reference existance
return $referenceExists;
}
/**
* creates a HTTP link to a given blob reference for a given database
*
* @access public
* @param string - BLOB reference
* @param string - database name
* @uses PMA_Config::get()
* @uses PMA_DBI_select_db()
* @uses PMA_backquote()
* @uses PMA_sqlAddslashes()
* @uses PMA_DBI_query()
* @uses PMA_DBI_fetch_assoc()
* @return string - HTTP link or Error
*/
function PMA_BS_CreateReferenceLink($bs_reference, $db_name)
{
// load PMA configuration
$PMA_Config = $GLOBALS['PMA_Config'];
// return if unable to load PMA configuration
if (empty($PMA_Config))
return '';
// generate bs reference link
$bs_ref_link = 'http://' . $PMA_Config->get('BLOBSTREAMING_SERVER') . '/' . $bs_reference;
$pbms_host = $PMA_Config->get('BLOBSTREAMING_HOST');
$pbms_port = $PMA_Config->get('BLOBSTREAMING_PORT');
// select specified database
PMA_DBI_select_db($db_name);
$pbms_repo_bq = PMA_backquote($PMA_Config->get('PBMS_NAME') . "_repository");
$pbms_ref_bq = PMA_backquote($PMA_Config->get('PBMS_NAME') . "_reference");
$pbms_cust_content_bq = PMA_backquote($PMA_Config->get('PBMS_NAME') . "_custom_content_type");
// run query on determining specified BS reference
$query = "SELECT $pbms_repo_bq.Content_type, $pbms_cust_content_bq.Content_type AS Custom_type";
$query .= " FROM $pbms_repo_bq LEFT JOIN $pbms_ref_bq ON";
$query .= "$pbms_repo_bq.Repository_id=$pbms_ref_bq.Repository_id";
$query .= " AND $pbms_repo_bq.Blob_size=$pbms_ref_bq.Blob_size";
$query .= " AND $pbms_repo_bq.Repo_blob_offset=$pbms_ref_bq.Repo_blob_offset";
$query .= " LEFT JOIN $pbms_cust_content_bq ON $pbms_cust_content_bq.Blob_url=$pbms_ref_bq.Blob_url";
$query .= " WHERE $pbms_ref_bq.Blob_url='" . PMA_sqlAddslashes($bs_reference) . "'";
$result = PMA_DBI_query($query);
// if record exists
if ($data = @PMA_DBI_fetch_assoc($result))
{
// determine content-type for BS repository file (original or custom)
$is_custom_type = false;
if (isset($data['Custom_type']))
{
$content_type = $data['Custom_type'];
$is_custom_type = true;
if (pbms_connect($pbms_host, $pbms_port, $db_name) == FALSE) {
if ($quiet == FALSE)
PMA_BS_ReportPBMSError("PBMS Connectiuon failed: pbms_connect($pbms_host, $pbms_port, $db_name)");
return FALSE;
}
else
$content_type = $data['Content_type'];
return TRUE;
}
if (!$content_type)
$content_type = NULL;
//------------
function PMA_do_disconnect()
{
pbms_close();
}
$output = "<a href=\"#\" onclick=\"requestMIMETypeChange('" . urlencode($db_name) . "', '" . urlencode($GLOBALS['table']) . "', '" . urlencode($bs_reference) . "', '" . urlencode($content_type) . "')\">$content_type</a>";
//------------
/**
* checks whether the BLOB reference looks valid
*
*/
function PMA_BS_IsPBMSReference($bs_reference, $db_name)
{
if (PMA_do_connect($db_name, TRUE) == FALSE) {
return FALSE;
}
$ok = pbms_is_blob_reference($bs_reference);
PMA_do_disconnect();
return $ok ;
}
// specify custom HTML for various content types
switch ($content_type)
{
// no content specified
case NULL:
$output = "NULL";
break;
// image content
case 'image/jpeg':
case 'image/png':
$output .= ' (<a href="' . $bs_ref_link . '" target="new">' . __('View image') . '</a>)';
break;
// audio content
case 'audio/mpeg':
$output .= ' (<a href="#" onclick="popupBSMedia(\'' . PMA_generate_common_url() . '\',\'' . urlencode($bs_reference) . '\', \'' . urlencode($content_type) . '\',' . ($is_custom_type ? 1 : 0) . ', 640, 120)">' . __('Play audio'). '</a>)';
break;
// video content
case 'application/x-flash-video':
case 'video/mpeg':
$output .= ' (<a href="#" onclick="popupBSMedia(\'' . PMA_generate_common_url() . '\',\'' . urlencode($bs_reference) . '\', \'' . urlencode($content_type) . '\',' . ($is_custom_type ? 1 : 0) . ', 640, 480)">' . __('View video') . '</a>)';
break;
// unsupported content. specify download
default:
$output .= ' (<a href="' . $bs_ref_link . '" target="new">' . __('Download file'). '</a>)';
}
//------------
function PMA_BS_CreateReferenceLink($bs_reference, $db_name)
{
if (PMA_do_connect($db_name, FALSE) == FALSE) {
return 'Error';
}
if (pbms_get_info($bs_reference) == FALSE) {
PMA_BS_ReportPBMSError("PBMS get BLOB info failed: pbms_get_info($bs_reference)");
PMA_do_disconnect();
return 'Error';
}
// return HTML
return $output;
} // end if ($data = @PMA_DBI_fetch_assoc($result))
$content_type = pbms_get_metadata_value("Content-type");
if ($content_type == FALSE) {
PMA_BS_ReportPBMSError("PMA_BS_CreateReferenceLink($bs_reference, $db_name): get BLOB Content-type failed: ");
}
PMA_do_disconnect();
if (!$content_type)
$content_type = "image/jpeg";
$bs_url = PMA_BS_getURL($bs_reference);
if (empty($bs_url)) {
PMA_BS_ReportPBMSError("No blob streaming server configured!");
return 'Error';
}
$output = "<a href=\"#\" onclick=\"requestMIMETypeChange('" . urlencode($db_name) . "', '" . urlencode($GLOBALS['table']) . "', '" . urlencode($bs_reference) . "', '" . urlencode($content_type) . "')\">$content_type</a>";
// specify custom HTML for various content types
switch ($content_type)
{
// no content specified
case NULL:
$output = "NULL";
break;
// image content
case 'image/jpeg':
case 'image/png':
$output .= ' (<a href="' . $bs_url . '" target="new">' . __('View image') . '</a>)';
break;
// audio content
case 'audio/mpeg':
$output .= ' (<a href="#" onclick="popupBSMedia(\'' . PMA_generate_common_url() . '\',\'' . urlencode($bs_reference) . '\', \'' . urlencode($content_type) . '\',' . ($is_custom_type ? 1 : 0) . ', 640, 120)">' . __('Play audio'). '</a>)';
break;
// video content
case 'application/x-flash-video':
case 'video/mpeg':
$output .= ' (<a href="#" onclick="popupBSMedia(\'' . PMA_generate_common_url() . '\',\'' . urlencode($bs_reference) . '\', \'' . urlencode($content_type) . '\',' . ($is_custom_type ? 1 : 0) . ', 640, 480)">' . __('View video') . '</a>)';
break;
// unsupported content. specify download
default:
$output .= ' (<a href="' . $bs_url . '" target="new">' . __('Download file'). '</a>)';
}
//PMA_showMessage("PMA_BS_CreateReferenceLink($bs_reference, $db_name): $output");
return $output;
}
//------------
// In the future there may be server variables to turn on/off PBMS
// BLOB streaming on a per table or database basis. So in anticipation of this
// PMA_BS_IsTablePBMSEnabled() passes in the table and database name even though
// they are not currently needed.
function PMA_BS_IsTablePBMSEnabled($db_name, $tbl_name, $tbl_type)
{
if ((isset($tbl_type) == FALSE) || (strlen($tbl_type) == 0))
return FALSE;
// load PMA configuration
$PMA_Config = $GLOBALS['PMA_Config'];
// return if unable to load PMA configuration
if (empty($PMA_Config))
return FALSE;
// This information should be cached rather than selecting it each time.
//$query = "SELECT count(*) FROM information_schema.TABLES T, pbms.pbms_enabled E where T.table_schema = ". PMA_backquote($db_name) . " and T.table_name = ". PMA_backquote($tbl_name) . " and T.engine = E.name";
$query = "SELECT count(*) FROM pbms.pbms_enabled E where E.name = '". PMA_sqlAddslashes($tbl_type) . "'" ;
$result = PMA_DBI_query($query);
$data = PMA_DBI_fetch_row($result);
if ($data[0] == 1)
return TRUE;
return FALSE;
}
//------------
function PMA_BS_UpLoadFile($db_name, $tbl_name, $file_type, $file_name)
{
if (PMA_do_connect($db_name, FALSE) == FALSE) {
return FALSE;
}
$fh = fopen($file_name, 'r');
if (!$fh) {
PMA_do_disconnect();
PMA_showMessage("Could not open file: $file_name");
return FALSE;
}
pbms_add_metadata("Content-type", $file_type);
$pbms_blob_url = pbms_read_stream($fh, filesize($file_name), $tbl_name);
if (!$pbms_blob_url) {
PMA_BS_ReportPBMSError("pbms_read_stream() Failed");
}
//PMA_showMessage(" PMA_BS_UpLoadFile($db_name, $tbl_name, $file_type, $file_name): $pbms_blob_url");
fclose($fh);
PMA_do_disconnect();
return $pbms_blob_url;
}
//------------
function PMA_BS_SetContentType($db_name, $bsTable, $blobReference, $contentType)
{
// This is a really ugly way to do this but currently there is nothing better.
// In a future version of PBMS the system tables will be redesigned to make this
// more eficient.
$query = "SELECT Repository_id, Repo_blob_offset FROM pbms_reference WHERE Blob_url='" . PMA_sqlAddslashes($blobReference) . "'";
//error_log(" PMA_BS_SetContentType: $query\n", 3, "/tmp/mylog");
$result = PMA_DBI_query($query);
//error_log(" $query\n", 3, "/tmp/mylog");
// if record exists
if ($data = PMA_DBI_fetch_assoc($result))
{
$where = "WHERE Repository_id=" . $data['Repository_id'] . " AND Repo_blob_offset=" . $data['Repo_blob_offset'] ;
$query = "SELECT name from pbms_metadata $where";
$result = PMA_DBI_query($query);
if (PMA_DBI_num_rows($result) == 0)
$query = "INSERT into pbms_metadata Values( ". $data['Repository_id'] . ", " . $data['Repo_blob_offset'] . ", 'Content_type', '" . PMA_sqlAddslashes($contentType) . "')";
else
$query = "UPDATE pbms_metadata SET name = 'Content_type', Value = '" . PMA_sqlAddslashes($contentType) . "' $where";
//error_log("$query\n", 3, "/tmp/mylog");
PMA_DBI_query($query);
} else {
// if ($result == FALSE) {
// $err = PMA_DBI_getError();
// error_log("MySQL ERROR: $err\n", 3, "/tmp/mylog");
// } else
// error_log("No results: $query\n", 3, "/tmp/mylog");
return FALSE;
}
return TRUE;
}
//------------
function PMA_BS_IsHiddenTable($table)
{
switch ($table) {
case 'pbms_repository' :
case 'pbms_reference' :
case 'pbms_metadata' :
case 'pbms_metadata_header' :
case 'pbms_dump' :
return TRUE;
}
return FALSE;
}
//------------
function PMA_BS_getURL($reference)
{
// load PMA configuration
$PMA_Config = $GLOBALS['PMA_Config'];
if (empty($PMA_Config))
return FALSE;
// retrieve BS server variables from PMA configuration
$bs_server = $PMA_Config->get('BLOBSTREAMING_SERVER');
if (empty($bs_server))
return FALSE;
$bs_url = 'http://' . $bs_server . '/' . rtrim($reference);
//PMA_showMessage(" PMA_BS_getURL($reference): $bs_url");
return $bs_url;
// return on error
return 'Error';
}
?>