func SetUpFIPSMode(opts *ToolOptions) error {
if err := openssl.FIPSModeSet(opts.SSLFipsMode); err != nil {
return fmt.Errorf("couldn't set FIPS mode to %v: %v", opts.SSLFipsMode, err)
}
return nil
}
// Creates and configures an openssl.Ctx
func setupCtx(opts options.ToolOptions) (*openssl.Ctx, error) {
var ctx *openssl.Ctx
var err error
if err := openssl.FIPSModeSet(opts.SSLFipsMode); err != nil {
return nil, fmt.Errorf("couldn't set FIPS mode to %v: %v", opts.SSLFipsMode, err)
}
if ctx, err = openssl.NewCtxWithVersion(openssl.AnyVersion); err != nil {
return nil, fmt.Errorf("failure creating new openssl context with "+
"NewCtxWithVersion(AnyVersion): %v", err)
}
// OpAll - Activate all bug workaround options, to support buggy client SSL's.
// NoSSLv2 - Disable SSL v2 support
ctx.SetOptions(openssl.OpAll | openssl.NoSSLv2)
// HIGH - Enable strong ciphers
// !EXPORT - Disable export ciphers (40/56 bit)
// !aNULL - Disable anonymous auth ciphers
// @STRENGTH - Sort ciphers based on strength
ctx.SetCipherList("HIGH:!EXPORT:!aNULL@STRENGTH")
// add the PEM key file with the cert and private key, if specified
if opts.SSLPEMKeyFile != "" {
if err = ctx.UseCertificateChainFile(opts.SSLPEMKeyFile); err != nil {
return nil, fmt.Errorf("UseCertificateChainFile: %v", err)
}
// TODO support password encrypted key files
if err = ctx.UsePrivateKeyFile(opts.SSLPEMKeyFile, openssl.FiletypePEM); err != nil {
return nil, fmt.Errorf("UsePrivateKeyFile: %v", err)
}
// Verify that the certificate and the key go together.
if err = ctx.CheckPrivateKey(); err != nil {
return nil, fmt.Errorf("CheckPrivateKey: %v", err)
}
}
// If renegotiation is needed, don't return from recv() or send() until it's successful.
// Note: this is for blocking sockets only.
ctx.SetMode(openssl.AutoRetry)
// Disable session caching (see SERVER-10261)
ctx.SetSessionCacheMode(openssl.SessionCacheOff)
if opts.SSLCAFile != "" {
calist, err := openssl.LoadClientCAFile(opts.SSLCAFile)
if err != nil {
return nil, fmt.Errorf("LoadClientCAFile: %v", err)
}
ctx.SetClientCAList(calist)
if err = ctx.LoadVerifyLocations(opts.SSLCAFile, ""); err != nil {
return nil, fmt.Errorf("LoadVerifyLocations: %v", err)
}
var verifyOption openssl.VerifyOptions
if opts.SSLAllowInvalid {
verifyOption = openssl.VerifyNone
} else {
verifyOption = openssl.VerifyPeer
}
ctx.SetVerify(verifyOption, nil)
}
if opts.SSLCRLFile != "" {
store := ctx.GetCertificateStore()
store.SetFlags(openssl.CRLCheck)
lookup, err := store.AddLookup(openssl.X509LookupFile())
if err != nil {
return nil, fmt.Errorf("AddLookup(X509LookupFile()): %v", err)
}
lookup.LoadCRLFile(opts.SSLCRLFile)
}
return ctx, nil
}