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Bug #37100 data is returned truncated with BINARY CURSOR
Submitted: 2006-04-16 20:32 UTC Modified: 2008-10-13 13:45 UTC
Votes:2
Avg. Score:4.5 ± 0.5
Reproduced:2 of 2 (100.0%)
Same Version:0 (0.0%)
Same OS:0 (0.0%)
From: e dot mauviere at geoclip dot fr Assigned: helly
Status: Closed Package: PostgreSQL related
PHP Version: 5.1.2 OS: WIN XP PRO
Private report: No CVE-ID:
 [2006-04-16 20:32 UTC] e dot mauviere at geoclip dot fr
Description:
------------
Impossible to retrieve properly binary data from a binary field in Postgresql.
It should work with the SQL BINARY CURSOR OPTION in Postgres, but data returned is truncated.

Reproduce code:
---------------
CREATE TABLE test(binfield byteA) ;
INSERT INTO test VALUES (decode('0103AA000812','hex'));

//First try
$data =pg_query("SELECT binfield FROM test");
$res=pg_fetch_result($data,0);
echo $res;  // =>"\001\003\252\000\010\022"
echo bin2hex(pg_unescape_bytea($res)); //=> "0103aa000812"
//By default, Potsgresql returns binary field values as strings, so we need to unescape them to restore original binary data. Tedious. Performance issue here.

//second try
$sql="BEGIN;DECLARE mycursor BINARY CURSOR FOR SELECT binfield FROM test;fetch all in mycursor;";
//the BINARY CURSOR option forces PostgreSQ to return binary data
$data =pg_query($sql);
$res=pg_fetch_result($data,0); 
echo strlen($res);  //=> 3
echo bin2hex($res); //=> 0103aa

//BUG : data returned is truncated, as soon as a "00" byte is encountered, 

Expected result:
----------------
i am expecting to retrieve full binary content


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 [2006-04-16 22:17 UTC] tony2001@php.net
Marcus, please test the patch:
http://tony2001.phpclub.net/dev/tmp/bug37100.diff
I don't have/use PG, so unfortunately I can't do it myself.
 [2006-05-20 18:34 UTC] e dot mauviere at geoclip dot fr
sorry to insist, but if there is a patch now, i would be very glad to benefit from it...
 [2008-01-22 15:31 UTC] maciej dot pijanka at gmail dot com
Same problem happens with postgresql 8.2.5, php 5.2.5 on linux
$ php.cli test-37100.php
\001\003\252\000\010\022
0103aa000812
3
0103aa

i only added to test case printing newlines to get more readable output.
 [2008-10-13 13:45 UTC] felipe@php.net
This bug has been fixed in CVS.

Snapshots of the sources are packaged every three hours; this change
will be in the next snapshot. You can grab the snapshot at
http://snaps.php.net/.
 
Thank you for the report, and for helping us make PHP better.

Fixed in 5.2.7, 5.3 and HEAD.
 
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