webdav: Workaround failing unlocking by ignoring certificates when closing.

In neon version, we use xml::crypto::SEInitializer in
NeonSession_CertificationNotify which I see called only once.
For some reason in serf, Serf_ConnectSetup is called every time
we send a command to the server. But that leads to not working
verifySerfCertificateChain in __run_exit_handlers because
xml::crypto::SEInitializer is not available anymore.

Change-Id: I15685256790375dd86eb1b7614da25838d5ce244

ucb/source/ucp/webdav/SerfLockStore.cxx

@@ -75,6 +75,7 @@ void TickerThread::run()
 
 SerfLockStore::SerfLockStore()
     : m_pTickerThread( 0 )
+    , m_bFinishing( false )
 {
 }
 
@@ -82,6 +83,7 @@ SerfLockStore::SerfLockStore()
 SerfLockStore::~SerfLockStore()
 {
     stopTicker();
+    m_bFinishing = true;
 
     // release active locks, if any.
     SAL_WARN_IF( !m_aLockInfoMap.empty(), "ucb.ucp.webdav",
@@ -96,6 +98,10 @@ SerfLockStore::~SerfLockStore()
     }
 }
 
+bool SerfLockStore::finishing() const
+{
+    return m_bFinishing;
+}
 
 void SerfLockStore::startTicker()
 {

ucb/source/ucp/webdav/SerfLockStore.hxx

@@ -55,12 +55,14 @@ class SerfLockStore
 {
     osl::Mutex         m_aMutex;
     TickerThread     * m_pTickerThread;
+    bool               m_bFinishing;
     LockInfoMap        m_aLockInfoMap;
 
 public:
     SerfLockStore();
     ~SerfLockStore();
 
+    bool finishing() const;
     OUString getLockToken( const OUString& rLock );
 
     void addLock( const OUString& rLock,

ucb/source/ucp/webdav/SerfSession.cxx

@@ -352,6 +352,13 @@ apr_status_t SerfSession::verifySerfCertificateChain (
         return SERF_SSL_CERT_UNKNOWN_FAILURE;
     }
 
+    // When called from SerfLockStore::~SerfLockStore(),
+    // css::xml::crypto::SEInitializer::create() will fail
+    // but we want to send unlock commands anyway,
+    // so just ignore certificates and return here.
+    if (apr_environment::AprEnv::getAprEnv()->getSerfLockStore()->finishing())
+        return APR_SUCCESS;
+
     // Create some crypto objects to decode and handle the base64
     // encoded certificate chain.
     uno::Reference< security::XCertificateContainer > xCertificateContainer;