[java-opensaml] branch master updated: OSJ-282: SignatureValidator initialization concurrency issue

[Brent Putman]

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putmanb pushed a commit to branch master
in repository java-opensaml.

View the commit online:
http://git.shibboleth.net/view/?p=java-opensaml.git;a=commit;h=3bab4855cd4b300561536ca7c044294e1fd6d11d

The following commit(s) were added to refs/heads/master by this push:
       new  3bab485   OSJ-282: SignatureValidator initialization concurrency issue
3bab485 is described below

commit 3bab4855cd4b300561536ca7c044294e1fd6d11d
Author: Brent Putman <putmanb at georgetown.edu>
AuthorDate: Fri Sep 13 17:25:23 2019 -0400

    OSJ-282: SignatureValidator initialization concurrency issue
---
 .../org/opensaml/xmlsec/signature/support/SignatureValidator.java     | 4 +++-
 .../src/main/java/org/opensaml/xmlsec/signature/support/Signer.java   | 2 +-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/opensaml-xmlsec-api/src/main/java/org/opensaml/xmlsec/signature/support/SignatureValidator.java b/opensaml-xmlsec-api/src/main/java/org/opensaml/xmlsec/signature/support/SignatureValidator.java
index 1004ad8..8994bd2 100644
--- a/opensaml-xmlsec-api/src/main/java/org/opensaml/xmlsec/signature/support/SignatureValidator.java
+++ b/opensaml-xmlsec-api/src/main/java/org/opensaml/xmlsec/signature/support/SignatureValidator.java
@@ -60,7 +60,9 @@ public final class SignatureValidator {
      * @return the SignatureValidationProvider
      * @throws SignatureException if a SignatureValidationProvider could not be loaded
      */
-    @Nonnull private static SignatureValidationProvider getSignatureValidationProvider() throws SignatureException {
+    @Nonnull private static synchronized SignatureValidationProvider getSignatureValidationProvider()
+            throws SignatureException {
+
         if (validatorInstance == null) {
             final ServiceLoader<SignatureValidationProvider> loader =
                     ServiceLoader.load(SignatureValidationProvider.class);
diff --git a/opensaml-xmlsec-api/src/main/java/org/opensaml/xmlsec/signature/support/Signer.java b/opensaml-xmlsec-api/src/main/java/org/opensaml/xmlsec/signature/support/Signer.java
index 6710fa5..e09ef81 100644
--- a/opensaml-xmlsec-api/src/main/java/org/opensaml/xmlsec/signature/support/Signer.java
+++ b/opensaml-xmlsec-api/src/main/java/org/opensaml/xmlsec/signature/support/Signer.java
@@ -79,7 +79,7 @@ public final class Signer {
      * @return the SignerProvider
      * @throws SignatureException if a SignerProvider could not be loaded
      */
-    @Nonnull private static SignerProvider getSignerProvider() throws SignatureException {
+    @Nonnull private static synchronized SignerProvider getSignerProvider() throws SignatureException {
         if (signerInstance == null) {
             final ServiceLoader<SignerProvider> loader = ServiceLoader.load(SignerProvider.class);
             final Iterator<SignerProvider> iterator = loader.iterator();

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