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SSLInitializer.cpp

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00001 
00006 /*
00007 Copyright (C) 2007  Anders Hedstrom
00008 
00009 This program is free software; you can redistribute it and/or
00010 modify it under the terms of the GNU General Public License
00011 as published by the Free Software Foundation; either version 2
00012 of the License, or (at your option) any later version.
00013 
00014 This program is distributed in the hope that it will be useful,
00015 but WITHOUT ANY WARRANTY; without even the implied warranty of
00016 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00017 GNU General Public License for more details.
00018 
00019 You should have received a copy of the GNU General Public License
00020 along with this program; if not, write to the Free Software
00021 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
00022 */
00023 #ifdef _WIN32
00024 #pragma warning(disable:4786)
00025 #endif
00026 #include "SSLInitializer.h"
00027 #ifdef HAVE_OPENSSL
00028 #include <map>
00029 #include "Utility.h"
00030 #include <openssl/rand.h>
00031 #include "Mutex.h"
00032 
00033 #ifdef _DEBUG
00034 #define DEB(x) x
00035 #else
00036 #define DEB(x)
00037 #endif
00038 
00039 
00040 #ifdef SOCKETS_NAMESPACE
00041 namespace SOCKETS_NAMESPACE {
00042 #endif
00043 
00044 
00045 BIO *SSLInitializer::bio_err = NULL;
00046 std::string SSLInitializer::m_rand_file;
00047 long SSLInitializer::m_rand_size = 1024;
00048 
00049 
00050 SSLInitializer::SSLInitializer()
00051 {
00052 DEB(    fprintf(stderr, "SSLInitializer()\n");)
00053 
00054         /* An error write context */
00055         bio_err = BIO_new_fp(stderr, BIO_NOCLOSE);
00056 
00057         /* Global system initialization*/
00058         SSL_library_init();
00059         SSL_load_error_strings();
00060         OpenSSL_add_all_algorithms();
00061         CRYPTO_set_locking_callback( SSL_locking_function );
00062         CRYPTO_set_id_callback( SSL_id_function );
00063 
00064         char *randfile = getenv("RANDFILE");
00065         char *home = getenv("HOME");
00066         if (!randfile && !home)
00067         {
00068                 char *homepath = getenv("HOMEPATH");
00069                 if (homepath)
00070                 {
00071                         Utility::SetEnv("HOME", homepath);
00072                 }
00073         }
00074         char path[512];
00075         *path = 0;
00076         RAND_file_name(path, 512);
00077         if (*path)
00078         {
00079                 m_rand_file = path;
00080                 m_rand_size = 1024;
00081                 RAND_write_file(path);
00082         }
00083         else
00084         {
00085 DEB(            fprintf(stderr, "SSLInitializer: no random file generated\n");)
00086         }
00087 
00088         /* Load randomness */
00089         if (!m_rand_file.size() || !RAND_load_file(m_rand_file.c_str(), m_rand_size))
00090         {
00091 DEB(            fprintf(stderr, "SSLInitializer: PRNG not initialized\n");)
00092         }
00093 
00094 }
00095 
00096 
00097 SSLInitializer::~SSLInitializer()
00098 {
00099 DEB(    fprintf(stderr, "~SSLInitializer()\n");)
00100         DeleteRandFile();
00101         // %! delete mutexes
00102 }
00103 
00104 
00105 void SSLInitializer::DeleteRandFile()
00106 {
00107         if (m_rand_file.size())
00108         {
00109                 unlink(m_rand_file.c_str());
00110         }
00111 }
00112 
00113 
00114 void SSLInitializer::SSL_locking_function(int mode, int n, const char *file, int line)
00115 {
00116 static  std::map<int, Mutex *> mmap;
00117         if (mmap.find(n) == mmap.end())
00118         {
00119                 mmap[n] = new Mutex;
00120         }
00121         if (mode & CRYPTO_LOCK)
00122         {
00123                 mmap[n] -> Lock();
00124         }
00125         else
00126         {
00127                 mmap[n] -> Unlock();
00128         }
00129 }
00130 
00131 
00132 unsigned long SSLInitializer::SSL_id_function()
00133 {
00134         return Utility::ThreadID();
00135 }
00136 
00137 
00138 #ifdef SOCKETS_NAMESPACE
00139 } // namespace SOCKETS_NAMESPACE {
00140 #endif
00141 #endif // HAVE_OPENSSL
Page, code, and content Copyright (C) 2007 by Anders Hedström
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