[Qt] add option to allow self signed root certs (for testing)

- it is helpful to be able to test and verify payment request processing
  by allowing self signed root certificates (e.g. generated by Gavins
  "certificate authority in a box")
- This option is just shown in the UI options, if -help-debug is enabled.

1 files changed, 9 insertions, 1 deletions

diff --git a/src/qt/paymentrequestplus.cpp b/src/qt/paymentrequestplus.cpp
index 35846bc153..39171c89eb 100644
--- a/src/qt/paymentrequestplus.cpp
+++ b/src/qt/paymentrequestplus.cpp
@@ -9,6 +9,8 @@
 
 #include "paymentrequestplus.h"
 
+#include "util.h"
+
 #include <stdexcept>
 
 #include <openssl/x509.h>
@@ -150,7 +152,13 @@ bool PaymentRequestPlus::getMerchant(X509_STORE* certStore, QString& merchant) c
         int result = X509_verify_cert(store_ctx);
         if (result != 1) {
             int error = X509_STORE_CTX_get_error(store_ctx);
-            throw SSLVerifyError(X509_verify_cert_error_string(error));
+            // For testing payment requests, we allow self signed root certs!
+            // This option is just shown in the UI options, if -help-debug is enabled.
+            if (!(error == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT && GetBoolArg("-allowselfsignedrootcertificates", false))) {
+                throw SSLVerifyError(X509_verify_cert_error_string(error));
+            } else {
+               qDebug() << "PaymentRequestPlus::getMerchant: Allowing self signed root certificate, because -allowselfsignedrootcertificates is true.";
+            }
         }
         X509_NAME *certname = X509_get_subject_name(signing_cert);