On 02.09.2016 11:11, Fernando Casas Schössow wrote:
I'm running libvirt-php 0.5.2 on CentOS 7 with libvirt 2.1.0. Using virsh I'm able to connect to hyper-v hosts correctly but using libvirt-php it fails during authentication since it seems that the credentials are not being passed along.
This is the php code I'm using:
<?php $logfile = 'test.log';
unlink($logfile); if (!libvirt_logfile_set($logfile)) die('Cannot set the log file');
$connstr = 'hyperv://user@hyperv-host/?transport=http'; $credentials = array(VIR_CRED_AUTHNAME=>'Administrator',VIR_CRED_PASSPHRASE=>'somepass'); $conn = libvirt_connect($connstr, false, $credentials); echo libvirt_get_last_error(); unset($conn);
$fp = fopen($logfile, 'r'); $str = fread($fp, filesize($logfile)); fclose($fp);
echo '<pre>'; echo $str; print_r($credentials); echo '</pre>'; ?>
Unfortunately, I don't have a hyperv instance to try this out, but for other connection URIs (like qemu:///system) this works for me.
And this is the output:
authentication failed: Password request failed
[2016-09-02 11:10:02 libvirt-php/core ]: libvirt_connect: Found 0 elements for credentials [2016-09-02 11:10:02 libvirt-php/core ]: libvirt_virConnectAuthCallback: cred 0, type 5, prompt Enter Administrator's password for hyperv-host challenge hyperv-host [2016-09-02 11:10:02 libvirt-php/core ]: libvirt_virConnectAuthCallback: result (null) (0) [2016-09-02 11:10:02 libvirt-php/core ]: libvirt_connect: Cannot establish connection to hyperv://Administrator@hyperv-host/?transport=http Array ( [2] => Administrator [5] => somepass )
Note the "Found 0 elements for credentials". After doing some googling I found an email thread "[libvirt] [libvirt-php PATCH 0/3] Fix PHP5 compatibilty issues." that I think is related to my problem, especially patch 2/3. I also checked github project and saw that those patches are already merged in the code so I went ahead and apply them to 0.5.2 source code and rebuild:
use VIRT_FOREACH macros everywhere - Commit: f4b760d libvirt_connect: use loop macros to read cred info - Commit: d704106 Define macros for looping php hash tables - Commit: 673a0bf
The build went fine but now when I'm trying to connect to the hyper-v host using libvirt-php I get an internal server error (500) so it seems PHP is crashing. From the system log I see:
kernel: traps: php-cgi[43452] general protection ip:7f63907f74a0 sp:7fff12d61f68 error:0 in libvirt.so.0.2001.0[7f6390735000+385000]
If you could attach a debugger and get a stack trace where this is happening that'd be great.
Is there any other patch that I'm missing?
Doesn't look like it, but if you could try the current git HEAD that would help. I mean, if you see the error even with that the bug is still there.
Any ideas on how to fix the libvirt_connect credentials issue without applying the patches above?
I should probably do a release soon. Not that there was a much movement since the last one though. Michal