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cni: fix plugin fingerprinting versions #16776

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merged 3 commits into from
Apr 21, 2023
Merged

cni: fix plugin fingerprinting versions #16776

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fe8e3bb
cni: fix plugin fingerprinting versions
EtienneBruines Apr 3, 2023
a6e52dd
simplify CNI version fingerprint loop
lgfa29 Apr 21, 2023
1e0d9d1
changelog: add entry for #16776
lgfa29 Apr 21, 2023
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3 changes: 3 additions & 0 deletions .changelog/16776.txt
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Original file line number Diff line number Diff line change
@@ -0,0 +1,3 @@
```release-note:bug
client: Fix CNI plugin version fingerprint when output includes protocol version
```
4 changes: 2 additions & 2 deletions client/fingerprint/plugins_cni.go
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Expand Up @@ -108,9 +108,9 @@ func (f *PluginsCNIFingerprint) detectOnePlugin(pluginPath string, entry os.DirE
// e.g.
// /opt/cni/bin/bridge <no args>
// CNI bridge plugin v1.0.0
// (and optionally another line that contains the supported CNI protocol versions)
tokens := strings.Fields(string(output))
for i := len(tokens) - 1; i >= 0; i-- {
token := tokens[i]
for _, token := range tokens {
if _, parseErr := version.NewSemver(token); parseErr == nil {
return token, true
}
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4 changes: 4 additions & 0 deletions client/fingerprint/plugins_cni_test.go
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Expand Up @@ -29,8 +29,10 @@ func TestPluginsCNIFingerprint_Fingerprint_present(t *testing.T) {
must.True(t, response.Detected)
attrCustom := f.(*PluginsCNIFingerprint).attribute("custom")
attrBridge := f.(*PluginsCNIFingerprint).attribute("bridge")
attrVlan := f.(*PluginsCNIFingerprint).attribute("vlan")
must.Eq(t, "v1.2.3", response.Attributes[attrCustom])
must.Eq(t, "v1.0.2", response.Attributes[attrBridge])
must.Eq(t, "v1.2.0", response.Attributes[attrVlan])
}

func TestPluginsCNIFingerprint_Fingerprint_multi(t *testing.T) {
Expand All @@ -49,10 +51,12 @@ func TestPluginsCNIFingerprint_Fingerprint_multi(t *testing.T) {
must.True(t, response.Detected)
attrCustom := f.(*PluginsCNIFingerprint).attribute("custom")
attrBridge := f.(*PluginsCNIFingerprint).attribute("bridge")
attrVlan := f.(*PluginsCNIFingerprint).attribute("vlan")
attrCustom2 := f.(*PluginsCNIFingerprint).attribute("custom2")
must.Eq(t, "v1.2.3", response.Attributes[attrCustom])
must.Eq(t, "v1.0.2", response.Attributes[attrBridge])
must.Eq(t, "v9.9.9", response.Attributes[attrCustom2])
must.Eq(t, "v1.2.0", response.Attributes[attrVlan])
}

func TestPluginsCNIFingerprint_Fingerprint_absent(t *testing.T) {
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1 change: 1 addition & 0 deletions client/fingerprint/test_fixtures/cni/bridge
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@@ -1,3 +1,4 @@
#!/bin/sh

# This fixture uses the old version output, without the supported CNI protocol versions.
echo "CNI bridge plugin v1.0.2"
5 changes: 5 additions & 0 deletions client/fingerprint/test_fixtures/cni/vlan
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#!/bin/sh

# This fixture uses the new version output, including the supported CNI protocol versions.
echo "CNI vlan plugin v1.2.0"
echo "CNI protocol versions supported: 0.1.0, 0.2.0, 0.3.0, 0.3.1, 0.4.0, 1.0.0"