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crypto/tls: handle errors in generate_cert.go

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I don't expect these to hit often, but we should still alert users if
we fail to write the correct data to the file, or fail to close it.

Change-Id: I33774e94108f7f18ed655ade8cca229b1993d4d2
Reviewed-on: https://go-review.googlesource.com/91456
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This commit is contained in:
Kevin Burke 2018-02-01 12:21:44 -08:00 committed by Henry Dorsett Case
parent 0957fdb171
commit 137239b5b7
1 changed files with 14 additions and 6 deletions
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20
generate_cert.go
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@ -146,16 +146,24 @@ func main() {
if err != nil {
log.Fatalf("failed to open cert.pem for writing: %s", err)
}
pem.Encode(certOut, &pem.Block{Type: "CERTIFICATE", Bytes: derBytes})
certOut.Close()
log.Print("written cert.pem\n")
if err := pem.Encode(certOut, &pem.Block{Type: "CERTIFICATE", Bytes: derBytes}); err != nil {
log.Fatalf("failed to write data to cert.pem: %s", err)
}
if err := certOut.Close(); err != nil {
log.Fatalf("error closing cert.pem: %s", err)
}
log.Print("wrote cert.pem\n")
keyOut, err := os.OpenFile("key.pem", os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0600)
if err != nil {
log.Print("failed to open key.pem for writing:", err)
return
}
pem.Encode(keyOut, pemBlockForKey(priv))
keyOut.Close()
log.Print("written key.pem\n")
if err := pem.Encode(keyOut, pemBlockForKey(priv)); err != nil {
log.Fatalf("failed to write data to key.pem: %s", err)
}
if err := keyOut.Close(); err != nil {
log.Fatalf("error closing key.pem: %s", err)
}
log.Print("wrote key.pem\n")
}