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- <?php
- /*
- db_utils.inc
- Collection of database-related function used
- by DRI applications.
- Written: 03/30/2012, Nicholas Kreidberg
- Revised: 03/30/2012, Nicholas Kreidberg
- */
- function fnDB_Open($sPKG, $sPerm, $sScope)
- {
- /*
- Function used to open and return database
- handles. All parameters are required in
- calls to function and if the function_exists
- encounters any problems it returns NULL
- so it is up the caller to check for return
- values and handle things accordingly.
- Call: $hDB = fnDB_Open("PIP", "RO", "Internal");
- */
- if(empty($sPKG) || empty($sPerm) || empty($sScope))
- return NULL;
- $aConstants = get_defined_constants();
- // Convert scope parameter to upper case
- $sScope = strtoupper($sScope);
- if($sScope === "INT" && empty($aConstants['sDB_SCOPE_INT'])) {
- // Include internal credentials
- require_once("dbauth_int.inc");
- }
- else if($sScope === "PUB" && empty($aConstants['sDB_SCOPE_PUB'])) {
- // Include public credentials
- require_once("dbauth_pub.inc");
- }
- else {
- // Invalid value passed for this parameter
- if(empty($aConstants['sDB_SCOPE_INT']) && empty($aConstants['sDB_SCOPE_PUB']))
- return NULL;
- }
- $sDB_Prefix = sprintf("sDB_%s_%s", $sPKG, $sPerm);
- $sHost = constant($sDB_Prefix."_HOST"."_$sScope");
- $sPort = constant($sDB_Prefix."_PORT"."_$sScope");
- $sUser = constant($sDB_Prefix."_USER"."_$sScope");
- $sPW = constant($sDB_Prefix."_PW"."_$sScope");
- $sPW = base64_decode($sPW);
- $sName = constant($sDB_Prefix."_NAME"."_$sScope");
- ($hDB = pg_connect("host=$sHost port=$sPort user=$sUser password=$sPW dbname=$sName")) or
- die("Failed to connect to the database $sPKG!");
- return $hDB;
- }
- ?>
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