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kvm: truncate vnc password to 8 chars #6244

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Merged
yadvr merged 3 commits into from
Apr 15, 2022
Merged

kvm: truncate vnc password to 8 chars #6244

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4e7348f
kvm: truncate vnc password to 8 chars
weizhouapache Apr 11, 2022
0c21b71
Merge remote-tracking branch 'apache/main' into 4.16-kvm-truncate-vnc…
weizhouapache Apr 12, 2022
020b614
Update #6244: fix unit tests
weizhouapache Apr 12, 2022
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2 changes: 1 addition & 1 deletion 2 plugins/hypervisors/kvm/src/main/java/com/cloud/hypervisor/kvm/resource/LibvirtVMDef.java
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Original file line number Diff line number Diff line change
Expand Up @@ -1764,7 +1764,7 @@ public String toString() {
graphicBuilder.append(" listen=''");
}
if (_passwd != null) {
graphicBuilder.append(" passwd='" + _passwd + "'");
graphicBuilder.append(" passwd='" + StringUtils.truncate(_passwd, 8) + "'");
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@yadvr yadvr Apr 12, 2022

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Why is that @weizhouapache ? Does this fix/address any libvirt limitation or user reported issue?

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@weizhouapache weizhouapache Apr 12, 2022

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@rohityadavcloud
this aims to fix an issue with ubuntu 22.04 (to be released soon) and libvirt 8.
the issue is raised in mailing list: https://lists.apache.org/thread/zk4fyggjqk1zphk4dfg1m596yrd15d9b

from many years ago, libvirt accepts vnc password with more than 8 chars. but only the first 8 chars in vnc password are used in vnc console verification (the other chars are dropped).
In recent libvirt, only vnc password with 8 chars is permitted.

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@yadvr yadvr Apr 12, 2022

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LGTM

} else if (_keyMap != null) {
graphicBuilder.append(" _keymap='" + _keyMap + "'");
}
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3 changes: 2 additions & 1 deletion 3 ...ors/kvm/src/test/java/com/cloud/hypervisor/kvm/resource/LibvirtComputingResourceTest.java
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Original file line number Diff line number Diff line change
Expand Up @@ -60,6 +60,7 @@
import org.apache.cloudstack.utils.linux.MemStat;
import org.apache.cloudstack.utils.qemu.QemuImg.PhysicalDiskFormat;
import org.apache.commons.lang.SystemUtils;
import org.apache.commons.lang3.StringUtils;
import org.joda.time.Duration;
import org.junit.Assert;
import org.junit.Before;
Expand Down Expand Up @@ -774,7 +775,7 @@ private void verifyGraphicsDevices(VirtualMachineTO to, Document domainDoc, Stri
assertXpath(domainDoc, prefix + "/graphics/@type", "vnc");
assertXpath(domainDoc, prefix + "/graphics/@listen", to.getVncAddr());
assertXpath(domainDoc, prefix + "/graphics/@autoport", "yes");
assertXpath(domainDoc, prefix + "/graphics/@passwd", to.getVncPassword());
assertXpath(domainDoc, prefix + "/graphics/@passwd", StringUtils.truncate(to.getVncPassword(), 8));
}

private void verifySerialDevices(Document domainDoc, String prefix) {
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