util: Remove OpenSSL multithreading infrastructure

src/util.cpp

@@ -83,8 +83,6 @@
 #include <boost/program_options/detail/config_file.hpp>
 #include <boost/program_options/parsers.hpp>
 #include <boost/thread.hpp>
-#include <openssl/crypto.h>
-#include <openssl/conf.h>
 
 // Work around clang compilation problem in Boost 1.46:
 // /usr/include/boost/program_options/detail/config_file.hpp:163:17: error: call to function 'to_internal' that is neither visible in the template definition nor found by argument-dependent lookup
@@ -118,47 +116,6 @@ bool fLogIPs = DEFAULT_LOGIPS;
 std::atomic<bool> fReopenDebugLog(false);
 CTranslationInterface translationInterface;
 
-/** Init OpenSSL library multithreading support */
-static CCriticalSection** ppmutexOpenSSL;
-void locking_callback(int mode, int i, const char* file, int line) NO_THREAD_SAFETY_ANALYSIS
-{
-    if (mode & CRYPTO_LOCK) {
-        ENTER_CRITICAL_SECTION(*ppmutexOpenSSL[i]);
-    } else {
-        LEAVE_CRITICAL_SECTION(*ppmutexOpenSSL[i]);
-    }
-}
-
-// Init
-static class CInit
-{
-public:
-    CInit()
-    {
-        // Init OpenSSL library multithreading support
-        ppmutexOpenSSL = (CCriticalSection**)OPENSSL_malloc(CRYPTO_num_locks() * sizeof(CCriticalSection*));
-        for (int i = 0; i < CRYPTO_num_locks(); i++)
-            ppmutexOpenSSL[i] = new CCriticalSection();
-        CRYPTO_set_locking_callback(locking_callback);
-
-        // OpenSSL can optionally load a config file which lists optional loadable modules and engines.
-        // We don't use them so we don't require the config. However some of our libs may call functions
-        // which attempt to load the config file, possibly resulting in an exit() or crash if it is missing
-        // or corrupt. Explicitly tell OpenSSL not to try to load the file. The result for our libs will be
-        // that the config appears to have been loaded and there are no modules/engines available.
-        OPENSSL_no_config();
-    }
-    ~CInit()
-    {
-        // Shutdown OpenSSL library multithreading support
-        CRYPTO_set_locking_callback(NULL);
-        for (int i = 0; i < CRYPTO_num_locks(); i++)
-            delete ppmutexOpenSSL[i];
-        OPENSSL_free(ppmutexOpenSSL);
-    }
-}
-instance_of_cinit;
-
 /**
  * LogPrintf() has been broken a couple of times now
  * by well-meaning people adding mutexes in the most straightforward way.