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main: Pass untyped nil for missing creds source
If we are unable to create a credentials source for some reason, we can rely on the disco object to nil-check it before calling any of its methods. However to do this we must ensure that we pass untyped nil. This commit rearranges the initialization to ensure that this happens. The user-facing bug that triggered this work is that running init when the HOME environment variable is unset would result in a panic on macOS.
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parent
6fbd3942ea
commit
f1f24df7ff
14
main.go
14
main.go
@ -154,18 +154,24 @@ func wrappedMain() int {
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}
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// Get any configured credentials from the config and initialize
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// a service discovery object.
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// a service discovery object. The slightly awkward predeclaration of
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// disco is required to allow us to pass untyped nil as the creds source
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// when creating the source fails. Otherwise we pass a typed nil which
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// breaks the nil checks in the disco object
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var services *disco.Disco
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credsSrc, err := credentialsSource(config)
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if err != nil {
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if err == nil {
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services = disco.NewWithCredentialsSource(credsSrc)
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} else {
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// Most commands don't actually need credentials, and most situations
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// that would get us here would already have been reported by the config
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// loading above, so we'll just log this one as an aid to debugging
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// in the unlikely event that it _does_ arise.
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log.Printf("[WARN] Cannot initialize remote host credentials manager: %s", err)
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// credsSrc may be nil in this case, but that's okay because the disco
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// passing (untyped) nil as the creds source is okay because the disco
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// object checks that and just acts as though no credentials are present.
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services = disco.NewWithCredentialsSource(nil)
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}
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services := disco.NewWithCredentialsSource(credsSrc)
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services.SetUserAgent(httpclient.TerraformUserAgent(version.String()))
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providerSrc, diags := providerSource(config.ProviderInstallation, services)
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