home *** CD-ROM | disk | FTP | other *** search
/ Freelog 115 / FreelogNo115-MaiJuin2013.iso / Internet / Filezilla Server / FileZilla_Server-0_9_41.exe / source / AsyncSslSocketLayer.cpp < prev    next >
C/C++ Source or Header  |  2011-11-06  |  62KB  |  2,241 lines
  1. /*           CAsyncSslSocketLayer by Tim Kosse 
  2.           mailto: tim.kosse@filezilla-project.org)
  3.                  Version 2.0 (2005-02-27)
  4. -------------------------------------------------------------
  5.  
  6. Introduction
  7. ------------
  8.  
  9. CAsyncSslSocketLayer is a layer class for CAsyncSocketEx which allows you to establish SSL secured
  10. connections. Support for both client and server side is provided.
  11.  
  12. How to use
  13. ----------
  14.  
  15. Using this class is really simple. In the easiest case, just add an instance of
  16. CAsyncSslSocketLayer to your socket and call InitClientSsl after creation of the socket.
  17.  
  18. This class only has a couple of public functions:
  19. - InitSSLConnection(bool clientMode);
  20.   This functions establishes an SSL connection. The clientMode parameter specifies wether the SSL connection 
  21.   is in server or in client mode.
  22.   Most likely you want to call this function right after calling Create for the socket.
  23.   But sometimes, you'll need to call this function later. One example is for an FTP connection
  24.   with explicit SSL: In this case you would have to call InitSSLConnection after receiving the reply
  25.   to an 'AUTH SSL' command.
  26. - Is UsingSSL();
  27.   Returns true if you've previously called InitClientSsl()
  28. - SetNotifyReply(SetNotifyReply(int nID, int nCode, int result);
  29.   You can call this function only after receiving a layerspecific callback with the SSL_VERIFY_CERT 
  30.   id. Set result to 1 if you trust the certificate and 0 if you don't trust it.
  31.   nID has to be the priv_data element of the t_SslCertData structure and nCode has to be SSL_VERIFY_CERT.
  32. - CreateSslCertificate(LPCTSTR filename, int bits, unsigned char* country, unsigned char* state,
  33.             unsigned char* locality, unsigned char* organization, unsigned char* unit, unsigned char* cname,
  34.             unsigned char *email, CString& err);
  35.   Creates a new self-signed SSL certificate and stores it in the given file
  36. - SendRaw(const void* lpBuf, int nBufLen, int nFlags = 0)
  37.   Sends a raw, unencrypted message. This may be useful after successful initialization to tell the other
  38.   side that can use SSL.
  39.  
  40. This layer sends some layerspecific notifications to your socket instance, you can handle them in
  41. OnLayerCallback of your socket class.
  42. Valid notification IDs are:
  43. - SSL_INFO 0
  44.   There are two possible values for param2:
  45.     SSL_INFO_ESTABLISHED 0 - You'll get this notification if the SSL negotiation was successful
  46.     SSL_INFO_SHUTDOWNCOMPLETE 1 - You'll get this notification if the SSL connection has been shut 
  47.                                   down sucessfully. See below for details.
  48. - SSL_FAILURE 1
  49.   This notification is sent if the SSL connection could not be established or if an existing 
  50.   connection failed. Valid values for param2 are:
  51.   - SSL_FAILURE_UNKNOWN 0 - Details may have been sent with a SSL_VERBOSE_* notification.
  52.   - SSL_FAILURE_ESTABLISH 1 - Problem during SSL negotiation
  53.   - SSL_FAILURE_LOADDLLS 2
  54.   - SSL_FAILURE_INITSSL 4
  55.   - SSL_FAILURE_VERIFYCERT 8 - The remote SSL certificate was invalid
  56.   - SSL_FAILURE_CERTREJECTED 16 - The remote SSL certificate was rejected by user
  57. - SSL_VERBOSE_WARNING 3
  58.   SSL_VERBOSE_INFO 4
  59.   This two notifications contain some additional information. The value given by param2 is a 
  60.   pointer to a null-terminated char string (char *) with some useful information.
  61. - SSL_VERIFY_CERT 2
  62.   This notification is sent each time a remote certificate has to be verified.
  63.   param2 is a pointer to a t_SslCertData structure which contains some information
  64.   about the remote certificate.
  65.   You have to set the reply to this message using the SetNotifyReply function.
  66.   
  67. Be careful with closing the connection after sending data, not all data may have been sent already.
  68. Before closing the connection, you should call Shutdown() and wait for the SSL_INFO_SHUTDOWNCOMPLETE
  69. notification. This assures that all encrypted data really has been sent.
  70.  
  71. License
  72. -------
  73.  
  74. Feel free to use this class, as long as you don't claim that you wrote it
  75. and this copyright notice stays intact in the source files.
  76. If you want to use this class in a commercial application, a short message
  77. to tim.kosse@filezilla-project.org would be appreciated but is not required.
  78.  
  79. This product includes software developed by the OpenSSL Project
  80. for use in the OpenSSL Toolkit. (http://www.openssl.org/)
  81.  
  82. Version history
  83. ---------------
  84.  
  85. Version 2.0:
  86. - Add server support
  87. - a lot of bug fixes
  88.  
  89. */
  90.  
  91. #include "stdafx.h"
  92. #include "AsyncSslSocketLayer.h"
  93.  
  94. #if defined _DEBUG && defined _AFX
  95. #define new DEBUG_NEW
  96. #undef THIS_FILE
  97. static char THIS_FILE[] = __FILE__;
  98. #endif
  99.  
  100. // Simple macro to declare function type and function pointer based on the
  101. // three given parametrs:
  102. // r - return type,
  103. // n - function name
  104. // a - argument list
  105. //
  106. // Example:
  107. // def(int, foo, (int x)) becomes the following:
  108. // typedef int (*tfoo)(int x);
  109. // static tfoo pfoo;
  110.  
  111. #define def(r, n, a) \
  112.     typedef r (*t##n) a; \
  113.     static t##n p##n;
  114.  
  115. // Macro to load the given macro from a dll:
  116. #define load(dll, n) \
  117.     p##n = (t##n) GetProcAddress(dll, #n); \
  118.     if (!p##n) \
  119.         bError = true;
  120.  
  121. //The following functions from the SSL libraries are used:
  122. def(int, SSL_state, (const SSL *s));
  123. def(const char*, SSL_state_string_long, (const SSL *s));
  124. def(void, SSL_set_info_callback, (SSL *ssl, void (*cb)(const SSL *ssl,int type,int val)));
  125. def(void, SSL_set_bio, (SSL *s, BIO *rbio, BIO *wbio));
  126. def(void, SSL_set_connect_state, (SSL *s));
  127. def(int, SSL_set_session, (SSL *to, SSL_SESSION *session));
  128. def(BIO_METHOD*, BIO_f_ssl, (void));
  129. def(SSL*, SSL_new, (SSL_CTX *ctx));
  130. def(SSL_CTX*, SSL_CTX_new, (SSL_METHOD *meth));
  131. def(SSL_METHOD*, SSLv23_method, (void));
  132. def(void, SSL_load_error_strings, (void));
  133. def(int, SSL_library_init, (void));
  134. def(void, SSL_CTX_free, (SSL_CTX *));
  135. def(void, SSL_free, (SSL *ssl));
  136. def(int, SSL_get_error, (const SSL *s, int retcode));
  137. def(int, SSL_shutdown, (SSL *s));
  138. def(int, SSL_get_shutdown, (const SSL *ssl));
  139. def(const char*, SSL_alert_type_string_long, (int value));
  140. def(const char*, SSL_alert_desc_string_long, (int value));
  141. def(void, SSL_CTX_set_verify, (SSL_CTX *ctx, int mode, int (*callback)(int, X509_STORE_CTX *)));
  142. def(X509_STORE*, SSL_CTX_get_cert_store, (const SSL_CTX *));
  143. def(long, SSL_get_verify_result, (const SSL *ssl));
  144. def(X509*, SSL_get_peer_certificate, (const SSL *s));
  145. def(const char*, SSL_get_version, (const SSL *ssl));
  146. def(SSL_CIPHER*, SSL_get_current_cipher, (const SSL *ssl));
  147. def(const char*, SSL_CIPHER_get_name, (const SSL_CIPHER *cipher));
  148. def(char*, SSL_CIPHER_get_version, (const SSL_CIPHER *cipher));
  149. def(int, SSL_get_ex_data_X509_STORE_CTX_idx, (void));
  150. def(int, SSL_CTX_load_verify_locations, (SSL_CTX *ctx, const char *CAfile, const char *CApath));
  151. def(long, SSL_ctrl, (SSL *ssl, int cmd, long larg, void *parg));
  152. def(void, SSL_set_accept_state, (SSL *ssl));
  153. def(int, SSL_CTX_use_PrivateKey_file, (SSL_CTX *ctx, const char *file, int type));
  154. def(int, SSL_CTX_use_certificate_file, (SSL_CTX *ctx, const char *file, int type));
  155. def(int, SSL_CTX_check_private_key, (const SSL_CTX *ctx));
  156. def(void, SSL_CTX_set_default_passwd_cb, (SSL_CTX *ctx, pem_password_cb *cb));
  157. def(void, SSL_CTX_set_default_passwd_cb_userdata, (SSL_CTX *ctx, void *u));
  158. def(int, SSL_CTX_use_certificate_chain_file, (SSL_CTX *ctx, const char *file));
  159. def(long, SSL_CTX_ctrl, (SSL_CTX *ctx, int cmd, long larg, void *parg));
  160. def(int, SSL_set_cipher_list, (SSL *ssl, const char *str));
  161. def(const char*, SSL_get_cipher_list, (const SSL *ssl, int priority));
  162.  
  163. def(size_t, BIO_ctrl_pending, (BIO *b));
  164. def(int, BIO_read, (BIO *b, void *data, int len));
  165. def(long, BIO_ctrl, (BIO *bp, int cmd, long larg, void *parg));
  166. def(int, BIO_write, (BIO *b, const void *data, int len));
  167. def(size_t, BIO_ctrl_get_write_guarantee, (BIO *b));
  168. def(int, BIO_new_bio_pair, (BIO **bio1, size_t writebuf1, BIO **bio2, size_t writebuf2));
  169. def(BIO*, BIO_new, (BIO_METHOD *type));
  170. def(int, BIO_free, (BIO *a));
  171. def(int, i2t_ASN1_OBJECT, (char *buf, int buf_len, ASN1_OBJECT *a));
  172. def(int, OBJ_obj2nid, (const ASN1_OBJECT *o));
  173. def(ASN1_OBJECT*, X509_NAME_ENTRY_get_object, (X509_NAME_ENTRY *ne));
  174. def(X509_NAME_ENTRY*, X509_NAME_get_entry, (X509_NAME *name, int loc));
  175. def(int, X509_NAME_entry_count, (X509_NAME *name));
  176. def(X509_NAME*, X509_get_subject_name, (X509 *a));
  177. def(X509_NAME*, X509_get_issuer_name, (X509 *a));
  178. def(const char*, OBJ_nid2sn, (int n));
  179. def(ASN1_STRING*, X509_NAME_ENTRY_get_data, (X509_NAME_ENTRY *ne));
  180. def(void, X509_STORE_CTX_set_error, (X509_STORE_CTX *ctx, int s));
  181. def(int, X509_digest, (const X509 *data, const EVP_MD *type, unsigned char *md, unsigned int *len));
  182. def(const EVP_MD*, EVP_sha1, (void));
  183. def(X509*, X509_STORE_CTX_get_current_cert, (X509_STORE_CTX *ctx));
  184. def(int, X509_STORE_CTX_get_error, (X509_STORE_CTX *ctx));
  185. def(void, X509_free, (X509 *a));
  186. def(EVP_PKEY*, X509_get_pubkey, (X509 *x));
  187. def(int, BN_num_bits, (const BIGNUM *a));
  188. def(void, EVP_PKEY_free, (EVP_PKEY *pkey));
  189. def(void*, X509_STORE_CTX_get_ex_data, (X509_STORE_CTX *ctx, int idx));
  190. def(char*, X509_NAME_oneline, (X509_NAME *a, char *buf, int size));
  191. def(const char*, X509_verify_cert_error_string, (long n));
  192. def(int, X509_STORE_CTX_get_error_depth, (X509_STORE_CTX *ctx));
  193. def(unsigned long, ERR_get_error, (void));
  194. def(const char*, ERR_error_string, (unsigned long e, char *buf));
  195. def(int, ASN1_STRING_to_UTF8, (unsigned char **out, ASN1_STRING *in));
  196. def(void, CRYPTO_free, (void *p));
  197. def(RSA*, RSA_generate_key, (int bits, unsigned long e, void (*callback)(int,int,void *), void *cb_arg));
  198. def(int, X509_set_version, (X509 *x,long version));
  199. def(ASN1_TIME*, X509_gmtime_adj, (ASN1_TIME *s, long adj));
  200. def(int, X509_set_pubkey, (X509 *x, EVP_PKEY *pkey));
  201. def(int, X509_NAME_add_entry_by_txt, (X509_NAME *name, const char *field, int type, const unsigned char *bytes, int len, int loc, int set));
  202. def(int, X509_NAME_add_entry_by_NID, (X509_NAME *name, int nid, int type, unsigned char *bytes, int len, int loc, int set));
  203. def(int, X509_set_issuer_name, (X509 *x, X509_NAME *name));
  204. def(int, X509_sign, (X509 *x, EVP_PKEY *pkey, const EVP_MD *md));
  205. def(EVP_PKEY*, EVP_PKEY_new, (void));
  206. def(int, EVP_PKEY_assign, (EVP_PKEY *pkey, int type, char *key));
  207. def(X509*, X509_new, (void));
  208. def(int, ASN1_INTEGER_set, (ASN1_INTEGER *a, long v));
  209. def(ASN1_INTEGER*, X509_get_serialNumber, (X509 *x));
  210. def(int, PEM_ASN1_write_bio, (int (*i2d)(),const char *name,BIO *bp,char *x, const EVP_CIPHER *enc,unsigned char *kstr,int klen, pem_password_cb *callback, void *u));
  211. def(int, i2d_X509, (X509 *x, unsigned char **out));
  212. def(BIO_METHOD *, BIO_s_mem, (void));
  213. def(int, i2d_PrivateKey, (EVP_PKEY *a, unsigned char **pp));
  214. def(int, BIO_test_flags, (const BIO *b, int flags));
  215.  
  216.  
  217. // Critical section wrapper class
  218. #ifndef CCRITICALSECTIONWRAPPERINCLUDED
  219. class CCriticalSectionWrapper
  220. {
  221. public:
  222.     CCriticalSectionWrapper()
  223.     {
  224.         m_bInitialized = TRUE;
  225.         InitializeCriticalSection(&m_criticalSection);
  226.     }
  227.  
  228.     ~CCriticalSectionWrapper()
  229.     {
  230.         if (m_bInitialized)
  231.             DeleteCriticalSection(&m_criticalSection);
  232.         m_bInitialized = FALSE;
  233.     }
  234.  
  235.     void Lock()
  236.     {
  237.         if (m_bInitialized)
  238.             EnterCriticalSection(&m_criticalSection);
  239.     }
  240.     void Unlock()
  241.     {
  242.         if (m_bInitialized)
  243.             LeaveCriticalSection(&m_criticalSection);
  244.     }
  245. protected:
  246.     CRITICAL_SECTION m_criticalSection;
  247.     BOOL m_bInitialized;
  248. };
  249. #define CCRITICALSECTIONWRAPPERINCLUDED
  250. #endif
  251.  
  252. /////////////////////////////////////////////////////////////////////////////
  253. // CAsyncSslSocketLayer
  254. CCriticalSectionWrapper CAsyncSslSocketLayer::m_sCriticalSection;
  255.  
  256. CAsyncSslSocketLayer::t_SslLayerList* CAsyncSslSocketLayer::m_pSslLayerList = 0;
  257. int CAsyncSslSocketLayer::m_nSslRefCount = 0;
  258. HMODULE CAsyncSslSocketLayer::m_hSslDll1 = 0;
  259. HMODULE CAsyncSslSocketLayer::m_hSslDll2 = 0;
  260. std::map<SSL_CTX *, int> CAsyncSslSocketLayer::m_contextRefCount;
  261.  
  262. CAsyncSslSocketLayer::CAsyncSslSocketLayer()
  263. {
  264.     m_ssl = 0;
  265.     m_sslbio = 0;
  266.     m_ibio = 0;
  267.     m_nbio = 0;
  268.     m_ssl_ctx = 0;
  269.  
  270.     m_bUseSSL = false;
  271.     m_bSslInitialized = FALSE;
  272.     m_bSslEstablished = FALSE;
  273.     m_nNetworkSendBufferLen = 0;
  274.     m_nNetworkSendBufferMaxLen = 0;
  275.     m_pNetworkSendBuffer = NULL;
  276.     m_pRetrySendBuffer = 0;
  277.     m_nNetworkError = 0;
  278.     m_nShutDown = 0;
  279.  
  280.     m_bBlocking = FALSE;
  281.     m_nSslAsyncNotifyId = 0;
  282.     m_bFailureSent = FALSE;
  283.     m_nVerificationResult = 0;
  284.     m_nVerificationDepth = 0;
  285.     m_mayTriggerRead = true;
  286.     m_mayTriggerWrite = true;
  287.     m_mayTriggerReadUp = true;
  288.     m_mayTriggerWriteUp = true;
  289.  
  290.     m_onCloseCalled = false;
  291.     m_pKeyPassword = 0;
  292. }
  293.  
  294. CAsyncSslSocketLayer::~CAsyncSslSocketLayer()
  295. {
  296.     UnloadSSL();
  297.     delete [] m_pNetworkSendBuffer;
  298.     delete [] m_pRetrySendBuffer;
  299.     delete [] m_pKeyPassword;
  300. }
  301.  
  302. int CAsyncSslSocketLayer::InitSSL()
  303. {
  304.     if (m_bSslInitialized)
  305.         return 0;
  306.  
  307.     m_sCriticalSection.Lock();
  308.  
  309.     if (!m_nSslRefCount)
  310.     {
  311.         m_hSslDll2=
  312.             LoadLibrary(_T("libeay32.dll"));
  313.         if (!m_hSslDll2)
  314.         {
  315.             if (m_hSslDll1)
  316.                 FreeLibrary(m_hSslDll1);
  317.             m_hSslDll1=0;
  318.  
  319.             m_sCriticalSection.Unlock();
  320.             return SSL_FAILURE_LOADDLLS;
  321.         }
  322.  
  323.         bool bError = false;
  324.         load(m_hSslDll2, BIO_ctrl_pending);
  325.         load(m_hSslDll2, BIO_ctrl_pending);
  326.         load(m_hSslDll2, BIO_read);
  327.         load(m_hSslDll2, BIO_ctrl);
  328.         load(m_hSslDll2, BIO_write);
  329.         load(m_hSslDll2, BIO_ctrl_get_write_guarantee);
  330.         load(m_hSslDll2, BIO_new_bio_pair);
  331.         load(m_hSslDll2, BIO_new);
  332.         load(m_hSslDll2, BIO_free);
  333.         load(m_hSslDll2, i2t_ASN1_OBJECT);
  334.         load(m_hSslDll2, OBJ_obj2nid);
  335.         load(m_hSslDll2, X509_NAME_ENTRY_get_object);
  336.         load(m_hSslDll2, X509_NAME_get_entry);
  337.         load(m_hSslDll2, X509_NAME_entry_count);
  338.         load(m_hSslDll2, X509_get_subject_name);
  339.         load(m_hSslDll2, X509_get_issuer_name);
  340.         load(m_hSslDll2, OBJ_nid2sn);
  341.         load(m_hSslDll2, X509_NAME_ENTRY_get_data);
  342.         load(m_hSslDll2, X509_STORE_CTX_set_error);
  343.         load(m_hSslDll2, X509_digest);
  344.         load(m_hSslDll2, EVP_sha1);
  345.         load(m_hSslDll2, X509_STORE_CTX_get_current_cert);
  346.         load(m_hSslDll2, X509_STORE_CTX_get_error);
  347.         load(m_hSslDll2, X509_free);
  348.         load(m_hSslDll2, X509_get_pubkey);
  349.         load(m_hSslDll2, BN_num_bits);
  350.         load(m_hSslDll2, EVP_PKEY_free);
  351.         load(m_hSslDll2, X509_STORE_CTX_get_ex_data);
  352.         load(m_hSslDll2, X509_NAME_oneline);
  353.         load(m_hSslDll2, X509_verify_cert_error_string);
  354.         load(m_hSslDll2, X509_STORE_CTX_get_error_depth);
  355.         load(m_hSslDll2, ERR_get_error);
  356.         load(m_hSslDll2, ERR_error_string);
  357.         load(m_hSslDll2, ASN1_STRING_to_UTF8);
  358.         load(m_hSslDll2, CRYPTO_free);
  359.         load(m_hSslDll2, RSA_generate_key);
  360.         load(m_hSslDll2, X509_set_version);
  361.         load(m_hSslDll2, X509_gmtime_adj);
  362.         load(m_hSslDll2, X509_set_pubkey);
  363.         load(m_hSslDll2, X509_NAME_add_entry_by_txt);
  364.         load(m_hSslDll2, X509_NAME_add_entry_by_NID);
  365.         load(m_hSslDll2, X509_set_issuer_name);
  366.         load(m_hSslDll2, X509_sign);
  367.         load(m_hSslDll2, EVP_PKEY_new);
  368.         load(m_hSslDll2, EVP_PKEY_assign);
  369.         load(m_hSslDll2, X509_new);
  370.         load(m_hSslDll2, ASN1_INTEGER_set);
  371.         load(m_hSslDll2, X509_get_serialNumber);
  372.         load(m_hSslDll2, PEM_ASN1_write_bio);
  373.         load(m_hSslDll2, i2d_X509);
  374.         load(m_hSslDll2, BIO_s_mem);
  375.         load(m_hSslDll2, i2d_PrivateKey);
  376.         load(m_hSslDll2, BIO_test_flags);
  377.  
  378.         if (bError)
  379.         {
  380.             FreeLibrary(m_hSslDll1);
  381.             m_hSslDll1 = 0;
  382.             FreeLibrary(m_hSslDll2);
  383.             m_hSslDll2 = 0;
  384.  
  385.             m_sCriticalSection.Unlock();
  386.             return SSL_FAILURE_LOADDLLS;
  387.         }
  388.  
  389.         m_hSslDll1 = LoadLibrary(_T("ssleay32.dll"));
  390.         if (!m_hSslDll1)
  391.         {
  392.             if (m_hSslDll2)
  393.                 FreeLibrary(m_hSslDll2);
  394.             m_hSslDll2 = NULL;
  395.             
  396.             m_sCriticalSection.Unlock();
  397.             return SSL_FAILURE_LOADDLLS;
  398.         }
  399.         load(m_hSslDll1, SSL_state_string_long);
  400.         load(m_hSslDll1, SSL_state);
  401.         load(m_hSslDll1, SSL_set_info_callback);
  402.         load(m_hSslDll1, SSL_set_bio);
  403.         load(m_hSslDll1, SSL_set_connect_state);
  404.         load(m_hSslDll1, SSL_set_session);
  405.         load(m_hSslDll1, BIO_f_ssl);
  406.         load(m_hSslDll1, SSL_new);
  407.         load(m_hSslDll1, SSL_CTX_new);
  408.         load(m_hSslDll1, SSLv23_method);
  409.         load(m_hSslDll1, SSL_load_error_strings);
  410.         load(m_hSslDll1, SSL_library_init);
  411.         load(m_hSslDll1, SSL_CTX_free);
  412.         load(m_hSslDll1, SSL_free);
  413.         load(m_hSslDll1, SSL_get_error);
  414.         load(m_hSslDll1, SSL_shutdown);
  415.         load(m_hSslDll1, SSL_get_shutdown);
  416.         load(m_hSslDll1, SSL_alert_type_string_long);
  417.         load(m_hSslDll1, SSL_alert_desc_string_long);
  418.         load(m_hSslDll1, SSL_CTX_set_verify);
  419.         load(m_hSslDll1, SSL_CTX_get_cert_store);
  420.         load(m_hSslDll1, SSL_get_verify_result);
  421.         load(m_hSslDll1, SSL_get_peer_certificate);
  422.         load(m_hSslDll1, SSL_get_version);
  423.         load(m_hSslDll1, SSL_get_current_cipher);
  424.         load(m_hSslDll1, SSL_CIPHER_get_name);
  425.         load(m_hSslDll1, SSL_CIPHER_get_version);
  426.         load(m_hSslDll1, SSL_get_ex_data_X509_STORE_CTX_idx);
  427.         load(m_hSslDll1, SSL_CTX_load_verify_locations);
  428.         load(m_hSslDll1, SSL_ctrl);
  429.         load(m_hSslDll1, SSL_set_accept_state);
  430.         load(m_hSslDll1, SSL_CTX_use_PrivateKey_file);
  431.         load(m_hSslDll1, SSL_CTX_use_certificate_file);
  432.         load(m_hSslDll1, SSL_CTX_check_private_key);
  433.         load(m_hSslDll1, SSL_CTX_set_default_passwd_cb_userdata);
  434.         load(m_hSslDll1, SSL_CTX_set_default_passwd_cb);
  435.         load(m_hSslDll1, SSL_CTX_use_certificate_chain_file);
  436.         load(m_hSslDll1, SSL_CTX_ctrl);
  437.         load(m_hSslDll1, SSL_get_cipher_list);
  438.         load(m_hSslDll1, SSL_set_cipher_list);
  439.  
  440.         if (bError)
  441.         {
  442.             FreeLibrary(m_hSslDll1);
  443.             m_hSslDll1=0;
  444.             if (m_hSslDll2)
  445.                 FreeLibrary(m_hSslDll2);
  446.             m_hSslDll2=0;
  447.  
  448.             m_sCriticalSection.Unlock();
  449.             return SSL_FAILURE_LOADDLLS;
  450.         }
  451.  
  452.         pSSL_load_error_strings();
  453.         if (!pSSL_library_init())
  454.         {
  455.             FreeLibrary(m_hSslDll1);
  456.             m_hSslDll1=0;
  457.             FreeLibrary(m_hSslDll2);
  458.             m_hSslDll2=0;
  459.  
  460.             m_sCriticalSection.Unlock();
  461.             return SSL_FAILURE_INITSSL;
  462.         }
  463.     }
  464.  
  465.     m_nSslRefCount++;
  466.     m_sCriticalSection.Unlock();
  467.  
  468.     m_bSslInitialized = true;
  469.  
  470.     return 0;
  471. }
  472.  
  473. void CAsyncSslSocketLayer::OnReceive(int nErrorCode)
  474. {
  475.     if (m_bUseSSL)
  476.     {
  477.         if (m_bBlocking)
  478.         {
  479.             m_mayTriggerRead = true;
  480.             return;
  481.         }
  482.         if (m_nNetworkError)
  483.             return;
  484.  
  485.         m_mayTriggerRead = false;
  486.         
  487.         //Get number of bytes we can receive and store in the network input bio
  488.         size_t len = pBIO_ctrl_get_write_guarantee(m_nbio);
  489.         if (!len)
  490.         {
  491.             m_mayTriggerRead = true;
  492.             TriggerEvents();
  493.             return;
  494.         }
  495.  
  496.         char *buffer = new char[len];
  497.  
  498.         int numread = 0;
  499.         
  500.         // Receive data
  501.         numread = ReceiveNext(buffer, len);
  502.         if (numread > 0)
  503.         {
  504.             //Store it in the network input bio and process data
  505.             int numwritten = pBIO_write(m_nbio, buffer, numread);
  506.             pBIO_ctrl(m_nbio, BIO_CTRL_FLUSH, 0, NULL);
  507.  
  508.             // I have no idea why this call is needed, but without it, connections
  509.             // will stall. Perhaps it triggers some internal processing.
  510.             // Also, ignore return value, don't do any error checking. This function
  511.             // can report errors, even though a later call can succeed.
  512.             char dummy;
  513.             pBIO_read(m_sslbio, &dummy, 0);
  514.         }
  515.         else if (!numread)
  516.         {
  517.             if (GetLayerState() == connected)
  518.                 TriggerEvent(FD_CLOSE, nErrorCode, TRUE);
  519.         }
  520.         else if (numread == SOCKET_ERROR)
  521.         {
  522.             int nError = GetLastError();
  523.             if (nError != WSAEWOULDBLOCK && nError != WSAENOTCONN)
  524.             {
  525.                 m_nNetworkError = GetLastError();
  526.                 TriggerEvent(FD_CLOSE, 0, TRUE);
  527.  
  528.                 delete [] buffer;
  529.                 return;
  530.             }
  531.         }
  532.         delete [] buffer;
  533.  
  534.         if (m_pRetrySendBuffer)
  535.         {
  536.             int numwrite = pBIO_write(m_sslbio, m_pRetrySendBuffer, m_nRetrySendBufferLen);
  537.             if (numwrite >= 0)
  538.             {
  539.                 pBIO_ctrl(m_sslbio, BIO_CTRL_FLUSH, 0, NULL);
  540.                 delete [] m_pRetrySendBuffer;
  541.                 m_pRetrySendBuffer = 0;
  542.             }
  543.             else if (numwrite == -1)
  544.             {
  545.                 if (!pBIO_test_flags(m_sslbio, BIO_FLAGS_SHOULD_RETRY))
  546.                 {
  547.                     if (PrintLastErrorMsg())
  548.                     {
  549.                         delete [] m_pRetrySendBuffer;
  550.                         m_pRetrySendBuffer = 0;
  551.  
  552.                         SetLastError(WSAECONNABORTED);
  553.                         TriggerEvent(FD_CLOSE, 0, TRUE);
  554.                         return;
  555.                     }
  556.                 }
  557.             }
  558.         }
  559.  
  560.         if (!m_nShutDown && pSSL_get_shutdown(m_ssl) && pBIO_ctrl_pending(m_sslbio) <= 0)
  561.         {
  562.             if (ShutDown() || GetLastError() == WSAEWOULDBLOCK)
  563.             {
  564.                 if (ShutDownComplete())
  565.                     TriggerEvent(FD_CLOSE, 0, TRUE);
  566.             }
  567.             else
  568.             {
  569.                 m_nNetworkError = WSAECONNABORTED;
  570.                 WSASetLastError(WSAECONNABORTED);
  571.                 TriggerEvent(FD_CLOSE, WSAECONNABORTED, TRUE);
  572.             }
  573.             return;
  574.         }
  575.  
  576.         if (m_nShutDown == 1)
  577.             ShutDown();
  578.         if (ShutDownComplete() && m_nShutDown == 2)
  579.         {
  580.             //Send shutdown notification if all pending data has been sent
  581.             TriggerEvent(FD_WRITE, 0, 0);
  582.             DoLayerCallback(LAYERCALLBACK_LAYERSPECIFIC, SSL_INFO, SSL_INFO_SHUTDOWNCOMPLETE);
  583.             m_nShutDown++;
  584.         }
  585.  
  586.         TriggerEvents();
  587.     }
  588.     else
  589.         TriggerEvent(FD_READ, nErrorCode, TRUE);
  590. }
  591.  
  592. void CAsyncSslSocketLayer::OnSend(int nErrorCode)
  593. {
  594.     if (m_bUseSSL)
  595.     {
  596.         if (m_nNetworkError)
  597.             return;
  598.  
  599.         m_mayTriggerWrite = false;
  600.  
  601.         //Send data in the send buffer
  602.         while (m_nNetworkSendBufferLen)
  603.         {
  604.             int numsent = SendNext(m_pNetworkSendBuffer, m_nNetworkSendBufferLen);
  605.             if (numsent == SOCKET_ERROR)
  606.             {
  607.                 int nError = GetLastError();
  608.                 if (nError != WSAEWOULDBLOCK && nError != WSAENOTCONN)
  609.                 {
  610.                     m_nNetworkError = nError;
  611.                     TriggerEvent(FD_CLOSE, 0, TRUE);
  612.                 }
  613.                 return;
  614.             }
  615.             else if (!numsent)
  616.             {
  617.                 if (GetLayerState() == connected)
  618.                     TriggerEvent(FD_CLOSE, nErrorCode, TRUE);
  619.             }
  620.             if (numsent == m_nNetworkSendBufferLen)
  621.                 m_nNetworkSendBufferLen = 0;
  622.             else
  623.             {
  624.                 memmove(m_pNetworkSendBuffer, m_pNetworkSendBuffer + numsent, m_nNetworkSendBufferLen - numsent);
  625.                 m_nNetworkSendBufferLen -= numsent;
  626.             }
  627.         }
  628.  
  629.         //Send the data waiting in the network bio
  630.         size_t len = pBIO_ctrl_pending(m_nbio);
  631.         char *buffer = new char[len];
  632.         int numread = pBIO_read(m_nbio, buffer, len);
  633.         if (numread <= 0)
  634.             m_mayTriggerWrite = true;
  635.         while (numread > 0)
  636.         {
  637.             int numsent = SendNext(buffer, numread);
  638.             if (!numsent)
  639.             {
  640.                 if (GetLayerState() == connected)
  641.                     TriggerEvent(FD_CLOSE, nErrorCode, TRUE);
  642.             }
  643.             if (numsent == SOCKET_ERROR || numsent < numread)
  644.             {
  645.                 if (numsent == SOCKET_ERROR)
  646.                 {
  647.                     if (GetLastError() != WSAEWOULDBLOCK && GetLastError() != WSAENOTCONN)
  648.                     {
  649.                         m_nNetworkError = GetLastError();
  650.                         TriggerEvent(FD_CLOSE, 0, TRUE);
  651.                         delete [] buffer;
  652.                         return;
  653.                     }
  654.                     else
  655.                         numsent = 0;
  656.                 }
  657.  
  658.                 // Add all data that was retrieved from the network bio but could not be sent to the send buffer.
  659.                 if (m_nNetworkSendBufferMaxLen < (m_nNetworkSendBufferLen + numread - numsent))
  660.                 {
  661.                     char * tmp = m_pNetworkSendBuffer;
  662.                     m_nNetworkSendBufferMaxLen = static_cast<int>((m_nNetworkSendBufferLen + numread - numsent) * 1.5);
  663.                     m_pNetworkSendBuffer = new char[m_nNetworkSendBufferMaxLen];                    
  664.                     if (tmp)
  665.                     {
  666.                         memcpy(m_pNetworkSendBuffer, tmp, m_nNetworkSendBufferLen);
  667.                         delete [] tmp;
  668.                     }
  669.                 }
  670.                 ASSERT(m_pNetworkSendBuffer);
  671.                 memcpy(m_pNetworkSendBuffer + m_nNetworkSendBufferLen, buffer, numread-numsent);
  672.                 m_nNetworkSendBufferLen += numread - numsent;
  673.             }
  674.             if (!numsent)
  675.                 break;
  676.             len = pBIO_ctrl_pending(m_nbio);
  677.             if (!len)
  678.             {
  679.                 m_mayTriggerWrite = true;
  680.                 break;
  681.             }
  682.             delete [] buffer;
  683.             buffer = new char[len];
  684.             numread = pBIO_read(m_nbio, buffer, len);
  685.             if (numread <= 0)
  686.                 m_mayTriggerWrite = true;
  687.         }
  688.         delete [] buffer;
  689.  
  690.         if (m_pRetrySendBuffer)
  691.         {
  692.             int numwrite = pBIO_write(m_sslbio, m_pRetrySendBuffer, m_nRetrySendBufferLen);
  693.             if (numwrite >= 0)
  694.             {
  695.                 pBIO_ctrl(m_sslbio, BIO_CTRL_FLUSH, 0, NULL);
  696.                 delete [] m_pRetrySendBuffer;
  697.                 m_pRetrySendBuffer = 0;
  698.             }
  699.             else if (numwrite == -1)
  700.             {
  701.                 if (!pBIO_test_flags(m_sslbio, BIO_FLAGS_SHOULD_RETRY))
  702.                 {
  703.                     if (PrintLastErrorMsg())
  704.                     {
  705.                         delete [] m_pRetrySendBuffer;
  706.                         m_pRetrySendBuffer = 0;
  707.  
  708.                         SetLastError(WSAECONNABORTED);
  709.                         TriggerEvent(FD_CLOSE, 0, TRUE);
  710.                         return;
  711.                     }
  712.                 }
  713.             }
  714.         }
  715.  
  716.         // No more data available, ask for more.
  717.         TriggerEvents();
  718.         if (m_nShutDown == 1)
  719.             ShutDown();
  720.         if (m_nShutDown == 2 && ShutDownComplete())
  721.         {
  722.             //Send shutdown notification if all pending data has been sent
  723.             TriggerEvent(FD_WRITE, 0, 0);
  724.             DoLayerCallback(LAYERCALLBACK_LAYERSPECIFIC, SSL_INFO, SSL_INFO_SHUTDOWNCOMPLETE);
  725.             m_nShutDown++;
  726.         }
  727.     }
  728.     else
  729.         TriggerEvent(FD_WRITE, nErrorCode, TRUE);
  730. }
  731.  
  732. int CAsyncSslSocketLayer::Send(const void* lpBuf, int nBufLen, int nFlags)
  733. {
  734.     if (m_bUseSSL)
  735.     {
  736.         if (!lpBuf)
  737.             return 0;
  738.         if (m_bBlocking || m_pRetrySendBuffer)
  739.         {
  740.             m_mayTriggerWriteUp = true;
  741.             SetLastError(WSAEWOULDBLOCK);
  742.             return SOCKET_ERROR;
  743.         }
  744.         if (m_nNetworkError)
  745.         {
  746.             SetLastError(m_nNetworkError);
  747.             return SOCKET_ERROR;
  748.         }
  749.         if (m_nShutDown)
  750.         {
  751.             SetLastError(WSAESHUTDOWN);
  752.             return SOCKET_ERROR;
  753.         }
  754.         if (!m_bSslEstablished)
  755.         {
  756.             m_mayTriggerWriteUp = true;
  757.             SetLastError(WSAEWOULDBLOCK);
  758.             return SOCKET_ERROR;
  759.         }
  760.         if (!nBufLen)
  761.             return 0;
  762.  
  763.         if (m_onCloseCalled)
  764.         {
  765.             TriggerEvent(FD_CLOSE, 0, TRUE);
  766.             return 0;
  767.         }
  768.  
  769.         int len = pBIO_ctrl_get_write_guarantee(m_sslbio);
  770.         if (nBufLen > len)
  771.             nBufLen = len;
  772.         if (!len)
  773.         {
  774.             m_mayTriggerWriteUp = true;
  775.             TriggerEvents();                
  776.             SetLastError(WSAEWOULDBLOCK);
  777.         }
  778.  
  779.         m_pRetrySendBuffer = new char[nBufLen];
  780.         m_nRetrySendBufferLen = nBufLen;
  781.         memcpy(m_pRetrySendBuffer, lpBuf, nBufLen);
  782.  
  783.         int numwrite = pBIO_write(m_sslbio, m_pRetrySendBuffer, m_nRetrySendBufferLen);
  784.         if (numwrite >= 0)
  785.         {
  786.             pBIO_ctrl(m_sslbio, BIO_CTRL_FLUSH, 0, NULL);
  787.             delete [] m_pRetrySendBuffer;
  788.             m_pRetrySendBuffer = 0;
  789.         }
  790.         else if (numwrite == -1)
  791.         {
  792.             if (pBIO_test_flags(m_sslbio, BIO_FLAGS_SHOULD_RETRY))
  793.             {
  794.                 if (GetLayerState() == closed)
  795.                     return 0;
  796.                 else if (GetLayerState() != connected)
  797.                 {
  798.                     SetLastError(m_nNetworkError);
  799.                     return SOCKET_ERROR;
  800.                 }
  801.  
  802.                 TriggerEvents();
  803.  
  804.                 return nBufLen;
  805.             }
  806.             else
  807.             {
  808.                 bool fatal = PrintLastErrorMsg();
  809.                 if (fatal)
  810.                 {
  811.                     delete [] m_pRetrySendBuffer;
  812.                     m_pRetrySendBuffer = 0;
  813.  
  814.                     SetLastError(WSAECONNABORTED);
  815.                 }
  816.                 else
  817.                     SetLastError(WSAEWOULDBLOCK);
  818.             }
  819.             return SOCKET_ERROR;
  820.         }
  821.  
  822.         m_mayTriggerWriteUp = true;
  823.         TriggerEvents();
  824.  
  825.         return numwrite;
  826.     }
  827.     else
  828.     {
  829.         return SendNext(lpBuf, nBufLen, nFlags);
  830.     }
  831. }
  832.  
  833. int CAsyncSslSocketLayer::Receive(void* lpBuf, int nBufLen, int nFlags)
  834. {
  835.     if (m_bUseSSL)
  836.     {
  837.         if (m_bBlocking)
  838.         {
  839.             m_mayTriggerReadUp = true;
  840.             SetLastError(WSAEWOULDBLOCK);
  841.             return SOCKET_ERROR;
  842.         }
  843.         if (m_nNetworkError)
  844.         {
  845.             if (pBIO_ctrl(m_sslbio, BIO_CTRL_PENDING, 0, NULL) && !m_nShutDown)
  846.             {
  847.                 m_mayTriggerReadUp = true;
  848.                 TriggerEvents();
  849.                 return pBIO_read(m_sslbio, lpBuf,nBufLen);
  850.             }
  851.             WSASetLastError(m_nNetworkError);
  852.             return SOCKET_ERROR;
  853.         }
  854.         if (m_nShutDown)
  855.         {
  856.             SetLastError(WSAESHUTDOWN);
  857.             return SOCKET_ERROR;
  858.         }
  859.         if (!nBufLen)
  860.             return 0;
  861.         if (!pBIO_ctrl(m_sslbio, BIO_CTRL_PENDING, 0, NULL))
  862.         {
  863.             if (GetLayerState() == closed)
  864.                 return 0;
  865.             if (m_onCloseCalled)
  866.             {
  867.                 TriggerEvent(FD_CLOSE, 0, TRUE);
  868.                 return 0;
  869.             }
  870.             else if (GetLayerState() != connected)
  871.             {
  872.                 SetLastError(m_nNetworkError);
  873.                 return SOCKET_ERROR;
  874.             }
  875.             else if (pSSL_get_shutdown(m_ssl))
  876.             {
  877.                 if (ShutDown() || GetLastError() == WSAEWOULDBLOCK)
  878.                 {
  879.                     if (ShutDownComplete())
  880.                     {
  881.                         TriggerEvent(FD_CLOSE, 0, TRUE);
  882.                         return 0;
  883.                     }
  884.                     else
  885.                         WSASetLastError(WSAEWOULDBLOCK);
  886.                 }
  887.                 else
  888.                 {
  889.                     m_nNetworkError = WSAECONNABORTED;
  890.                     WSASetLastError(WSAECONNABORTED);
  891.                     TriggerEvent(FD_CLOSE, WSAECONNABORTED, TRUE);
  892.                 }
  893.                 return SOCKET_ERROR;
  894.             }
  895.             m_mayTriggerReadUp = true;
  896.             TriggerEvents();
  897.             SetLastError(WSAEWOULDBLOCK);
  898.             return SOCKET_ERROR;
  899.         }
  900.         int numread = pBIO_read(m_sslbio, lpBuf, nBufLen);
  901.         if (!numread)
  902.         {
  903.             if (pSSL_get_shutdown(m_ssl))
  904.             {
  905.                 if (ShutDown() || GetLastError() == WSAEWOULDBLOCK)
  906.                 {
  907.                     if (ShutDownComplete())
  908.                     {
  909.                         TriggerEvent(FD_CLOSE, 0, TRUE);
  910.                         return 0;
  911.                     }
  912.                     else
  913.                         WSASetLastError(WSAEWOULDBLOCK);
  914.                 }
  915.                 else
  916.                 {
  917.                     m_nNetworkError = WSAECONNABORTED;
  918.                     WSASetLastError(WSAECONNABORTED);
  919.                     TriggerEvent(FD_CLOSE, WSAECONNABORTED, TRUE);
  920.                 }
  921.                 return SOCKET_ERROR;
  922.             }
  923.             m_mayTriggerReadUp = true;
  924.             TriggerEvents();
  925.             SetLastError(WSAEWOULDBLOCK);
  926.             return SOCKET_ERROR;
  927.         }
  928.         if (numread < 0)
  929.         {
  930.             if (!pBIO_test_flags(m_sslbio, BIO_FLAGS_SHOULD_RETRY))
  931.             {
  932.                 bool fatal = PrintLastErrorMsg();
  933.                 if (fatal)
  934.                 {
  935.                     m_nNetworkError = WSAECONNABORTED;
  936.                     WSASetLastError(WSAECONNABORTED);
  937.                     TriggerEvent(FD_CLOSE, 0, TRUE);
  938.                     return SOCKET_ERROR;
  939.                 }
  940.             }
  941.  
  942.             if (pSSL_get_shutdown(m_ssl))
  943.             {
  944.                 if (ShutDown() || GetLastError() == WSAEWOULDBLOCK)
  945.                 {
  946.                     if (ShutDownComplete())
  947.                     {
  948.                         TriggerEvent(FD_CLOSE, 0, TRUE);
  949.                         return 0;
  950.                     }
  951.                     else
  952.                         WSASetLastError(WSAEWOULDBLOCK);
  953.                 }
  954.                 else
  955.                 {
  956.                     m_nNetworkError = WSAECONNABORTED;
  957.                     WSASetLastError(WSAECONNABORTED);
  958.                     TriggerEvent(FD_CLOSE, 0, TRUE);
  959.                 }
  960.                 return SOCKET_ERROR;
  961.             }
  962.             m_mayTriggerReadUp = true;
  963.             TriggerEvents();
  964.             SetLastError(WSAEWOULDBLOCK);
  965.             return SOCKET_ERROR;
  966.         }
  967.  
  968.         m_mayTriggerReadUp = true;
  969.         TriggerEvents();
  970.         return numread;
  971.     }
  972.     else
  973.         return ReceiveNext(lpBuf, nBufLen, nFlags);
  974. }
  975.  
  976. void CAsyncSslSocketLayer::Close()
  977. {
  978.     m_nShutDown = 0;
  979.     m_onCloseCalled = false;
  980.     ResetSslSession();
  981.     CloseNext();
  982. }
  983.  
  984. BOOL CAsyncSslSocketLayer::Connect(const SOCKADDR *lpSockAddr, int nSockAddrLen)
  985. {
  986.     BOOL res = ConnectNext(lpSockAddr, nSockAddrLen);
  987.     if (!res)
  988.         if (GetLastError() != WSAEWOULDBLOCK)
  989.             ResetSslSession();
  990.     return res;
  991. }
  992.  
  993. BOOL CAsyncSslSocketLayer::Connect(LPCTSTR lpszHostAddress, UINT nHostPort)
  994. {
  995.     BOOL res = ConnectNext(lpszHostAddress, nHostPort);
  996.     if (!res)
  997.         if (GetLastError()!=WSAEWOULDBLOCK)
  998.             ResetSslSession();
  999.     return res;
  1000. }
  1001.  
  1002. int CAsyncSslSocketLayer::InitSSLConnection(bool clientMode, void* pSslContext /*=0*/)
  1003. {
  1004.     if (m_bUseSSL)
  1005.         return 0;
  1006.     int res = InitSSL();
  1007.     if (res)
  1008.         return res;
  1009.  
  1010.     m_sCriticalSection.Lock();
  1011.     if ((SSL_CTX*)pSslContext)
  1012.     {
  1013.         if (m_ssl_ctx)
  1014.         {
  1015.             m_sCriticalSection.Unlock();
  1016.             ResetSslSession();
  1017.             return SSL_FAILURE_INITSSL;
  1018.         }
  1019.  
  1020.         std::map<SSL_CTX *, int>::iterator& iter = m_contextRefCount.find((SSL_CTX*)pSslContext);
  1021.         if (iter == m_contextRefCount.end() || iter->second < 1)
  1022.         {
  1023.             m_sCriticalSection.Unlock();
  1024.             ResetSslSession();
  1025.             return SSL_FAILURE_INITSSL;
  1026.         }
  1027.         m_ssl_ctx = (SSL_CTX*)pSslContext;
  1028.         iter->second++;
  1029.     }
  1030.     else if (!m_ssl_ctx)
  1031.     {
  1032.         // Create new context if none given
  1033.         if (!(m_ssl_ctx = pSSL_CTX_new( pSSLv23_method())))
  1034.         {
  1035.             m_sCriticalSection.Unlock();
  1036.             ResetSslSession();
  1037.             return SSL_FAILURE_INITSSL;
  1038.         }
  1039.         m_contextRefCount[m_ssl_ctx] = 1;
  1040.  
  1041.         long options = pSSL_CTX_ctrl(m_ssl_ctx, SSL_CTRL_OPTIONS, 0, NULL);
  1042.         pSSL_CTX_ctrl(m_ssl_ctx, SSL_CTRL_OPTIONS, options | SSL_OP_NO_SSLv2, NULL);
  1043.  
  1044.         if (clientMode)
  1045.         {
  1046.             USES_CONVERSION;
  1047.             pSSL_CTX_set_verify(m_ssl_ctx, SSL_VERIFY_PEER, verify_callback);
  1048.             pSSL_CTX_load_verify_locations(m_ssl_ctx, T2CA(m_CertStorage), 0);
  1049.         }
  1050.     }
  1051.  
  1052.     //Create new SSL session
  1053.     if (!(m_ssl = pSSL_new(m_ssl_ctx)))
  1054.     {
  1055.         m_sCriticalSection.Unlock();
  1056.         ResetSslSession();
  1057.         return SSL_FAILURE_INITSSL;
  1058.     }
  1059.  
  1060.     // Disable DES and other weak and export ciphers
  1061.     pSSL_set_cipher_list(m_ssl, "DEFAULT:!DES:!WEAK:!EXP");
  1062.     
  1063.     //Add current instance to list of active instances
  1064.     t_SslLayerList *tmp = m_pSslLayerList;
  1065.     m_pSslLayerList = new t_SslLayerList;
  1066.     m_pSslLayerList->pNext = tmp;
  1067.     m_pSslLayerList->pLayer = this;
  1068.     m_sCriticalSection.Unlock();
  1069.  
  1070.     pSSL_set_info_callback(m_ssl, apps_ssl_info_callback);
  1071.  
  1072.     //Create bios
  1073.     m_sslbio = pBIO_new(pBIO_f_ssl());
  1074.     pBIO_new_bio_pair(&m_ibio, 4096, &m_nbio, 4096);
  1075.  
  1076.     if (!m_sslbio || !m_nbio || !m_ibio)
  1077.     {
  1078.         ResetSslSession();
  1079.         return SSL_FAILURE_INITSSL;
  1080.     }
  1081.  
  1082.     long options = pSSL_ctrl(m_ssl, SSL_CTRL_OPTIONS, 0, NULL);
  1083.     options |= SSL_OP_ALL;
  1084.     pSSL_ctrl(m_ssl, SSL_CTRL_OPTIONS, options, NULL);
  1085.  
  1086.     //Init SSL connection
  1087.     pSSL_set_session(m_ssl, NULL);
  1088.     if (clientMode)
  1089.         pSSL_set_connect_state(m_ssl);
  1090.     else
  1091.         pSSL_set_accept_state(m_ssl);
  1092.     pSSL_set_bio(m_ssl, m_ibio, m_ibio);
  1093.     pBIO_ctrl(m_sslbio, BIO_C_SET_SSL, BIO_NOCLOSE, m_ssl);
  1094.     pBIO_read(m_sslbio, (void *)1, 0);
  1095.  
  1096.     // Trigger FD_WRITE so that we can initialize SSL negotiation
  1097.     if (GetLayerState() == connected || GetLayerState() == attached)
  1098.     {
  1099.         TriggerEvent(FD_READ, 0);
  1100.         TriggerEvent(FD_WRITE, 0);
  1101.         TriggerEvent(FD_READ, 0, TRUE);
  1102.         TriggerEvent(FD_WRITE, 0, TRUE);
  1103.     }
  1104.  
  1105.     m_bUseSSL = true;
  1106.  
  1107.     return 0;
  1108. }
  1109.  
  1110. void CAsyncSslSocketLayer::ResetSslSession()
  1111. {
  1112.     if (m_pRetrySendBuffer)
  1113.     {
  1114.         delete [] m_pRetrySendBuffer;
  1115.         m_pRetrySendBuffer = 0;
  1116.     }
  1117.  
  1118.     m_bFailureSent = FALSE;
  1119.     m_bBlocking = FALSE;
  1120.     m_nSslAsyncNotifyId++;
  1121.     m_nNetworkError = 0;
  1122.     m_bUseSSL = FALSE;
  1123.     m_nVerificationResult = 0;
  1124.     m_nVerificationDepth = 0;
  1125.  
  1126.     m_bSslEstablished = FALSE;
  1127.     if (m_sslbio)
  1128.         pBIO_free(m_sslbio);
  1129.     if (m_ssl)
  1130.         pSSL_set_session(m_ssl,NULL);
  1131.     if (m_nbio)
  1132.         pBIO_free(m_nbio);
  1133.     if (m_ibio)
  1134.         pBIO_free(m_ibio);
  1135.  
  1136.     m_nNetworkSendBufferLen = 0;
  1137.  
  1138.     m_nbio = 0;
  1139.     m_ibio = 0;
  1140.     m_sslbio = 0;
  1141.  
  1142.     if (m_ssl)
  1143.         pSSL_free(m_ssl);
  1144.  
  1145.     m_sCriticalSection.Lock();
  1146.  
  1147.     if (m_ssl_ctx)
  1148.     {
  1149.         std::map<SSL_CTX *, int>::iterator& iter = m_contextRefCount.find(m_ssl_ctx);
  1150.         if (iter != m_contextRefCount.end())
  1151.         {
  1152.             if (iter->second <= 1)
  1153.             {
  1154.                 pSSL_CTX_free(m_ssl_ctx);
  1155.                 m_contextRefCount.erase(iter);
  1156.             }
  1157.             else
  1158.                 iter->second--;
  1159.         }
  1160.         m_ssl_ctx = 0;
  1161.     }
  1162.  
  1163.     delete [] m_pKeyPassword;
  1164.     m_pKeyPassword = 0;
  1165.  
  1166.     m_ssl = 0;
  1167.     t_SslLayerList *cur = m_pSslLayerList;
  1168.     if (!cur)
  1169.     {
  1170.         m_sCriticalSection.Unlock();
  1171.         return;
  1172.     }
  1173.  
  1174.     if (cur->pLayer == this)
  1175.     {
  1176.         m_pSslLayerList = cur->pNext;
  1177.         delete cur;
  1178.     }
  1179.     else
  1180.         while (cur->pNext)
  1181.         {
  1182.             if (cur->pNext->pLayer == this)
  1183.             {
  1184.                 t_SslLayerList *tmp = cur->pNext;
  1185.                 cur->pNext = cur->pNext->pNext;
  1186.                 delete tmp;
  1187.  
  1188.                 m_sCriticalSection.Unlock();
  1189.                 return;
  1190.             }
  1191.             cur = cur->pNext;
  1192.         }
  1193.     m_sCriticalSection.Unlock();
  1194. }
  1195.  
  1196. bool CAsyncSslSocketLayer::IsUsingSSL()
  1197. {
  1198.     return m_bUseSSL;
  1199. }
  1200.  
  1201. BOOL CAsyncSslSocketLayer::ShutDown(int nHow /*=sends*/)
  1202. {
  1203.     if (m_bUseSSL)
  1204.     {
  1205.         if (m_pRetrySendBuffer)
  1206.         {
  1207.             if (!m_nShutDown)
  1208.                 m_nShutDown = 1;
  1209.             WSASetLastError(WSAEWOULDBLOCK);
  1210.             return false;
  1211.         }
  1212.         if (m_nShutDown != 2)
  1213.             m_nShutDown = 2;
  1214.         else
  1215.         {
  1216.             if (ShutDownComplete())
  1217.                 return ShutDownNext();
  1218.             else
  1219.             {
  1220.                 TriggerEvents();
  1221.                 WSASetLastError(WSAEWOULDBLOCK);
  1222.                 return false;
  1223.             }
  1224.         }
  1225.         
  1226.         int res = pSSL_shutdown(m_ssl);
  1227.         if (res != -1)
  1228.         {
  1229.             if (!res)
  1230.                 pSSL_shutdown(m_ssl);
  1231.             if (ShutDownComplete())
  1232.                 return ShutDownNext();
  1233.             else
  1234.             {
  1235.                 TriggerEvents();
  1236.                 WSASetLastError(WSAEWOULDBLOCK);
  1237.                 return FALSE;
  1238.             }
  1239.         }
  1240.         else
  1241.         {
  1242.             int error = pSSL_get_error(m_ssl, -1);
  1243.             if (error == SSL_ERROR_WANT_READ || error == SSL_ERROR_WANT_WRITE)
  1244.             {
  1245.                 TriggerEvents();
  1246.                 WSASetLastError(WSAEWOULDBLOCK);
  1247.                 return FALSE;
  1248.             }
  1249.             else if (ShutDownComplete())
  1250.                 return ShutDownNext();
  1251.             else
  1252.             {
  1253.                 TriggerEvents();
  1254.                 WSASetLastError(WSAEWOULDBLOCK);
  1255.                 return FALSE;
  1256.             }
  1257.         }
  1258.     }
  1259.     else
  1260.     {
  1261.         if (!m_nShutDown)
  1262.             m_nShutDown = 2;
  1263.         return ShutDownNext(nHow);
  1264.     }
  1265. }
  1266.  
  1267. BOOL CAsyncSslSocketLayer::ShutDownComplete()
  1268. {
  1269.     //If a ShutDown was issued, has the connection already been shut down?
  1270.     if (!m_nShutDown)
  1271.         return FALSE;
  1272.     else if (!m_bUseSSL)
  1273.         return FALSE;
  1274.     else if (m_nNetworkSendBufferLen)
  1275.         return FALSE;
  1276.     else if (m_pRetrySendBuffer)
  1277.         return FALSE;
  1278.     
  1279.     // Empty read buffer
  1280.     char buffer[1000];
  1281.     int numread;
  1282.     do
  1283.     {
  1284.         numread = pBIO_read(m_sslbio, buffer, 1000);
  1285.     } while (numread > 0);
  1286.  
  1287.     if (pBIO_ctrl_pending(m_nbio))
  1288.         return FALSE;
  1289.  
  1290.     return TRUE;
  1291. }
  1292.  
  1293. void CAsyncSslSocketLayer::apps_ssl_info_callback(const SSL *s, int where, int ret)
  1294. {
  1295.     CAsyncSslSocketLayer *pLayer = 0;
  1296.     m_sCriticalSection.Lock();
  1297.     t_SslLayerList *cur = m_pSslLayerList;
  1298.     while (cur)
  1299.     {
  1300.         if (cur->pLayer->m_ssl == s)
  1301.             break;
  1302.         cur = cur->pNext;
  1303.     }
  1304.     if (!cur)
  1305.     {
  1306.         m_sCriticalSection.Unlock();
  1307.         //MessageBox(0, _T("Can't lookup SSL session!"), _T("Critical error"), MB_ICONEXCLAMATION);
  1308.         return;
  1309.     }
  1310.     else
  1311.         pLayer = cur->pLayer;
  1312.     m_sCriticalSection.Unlock();
  1313.  
  1314.     // Called while unloading?
  1315.     if (!pLayer->m_bUseSSL)
  1316.         return;
  1317.  
  1318.     char * str;
  1319.     int w;
  1320.  
  1321.     w = where& ~SSL_ST_MASK;
  1322.  
  1323.     if (w & SSL_ST_CONNECT)
  1324.         str = "SSL_connect";
  1325.     else if (w & SSL_ST_ACCEPT)
  1326.         str = "SSL_accept";
  1327.     else
  1328.         str = "undefined";
  1329.  
  1330.     if (where & SSL_CB_LOOP)
  1331.     {
  1332.         char *buffer = new char[4096];
  1333.         sprintf(buffer, "%s: %s",
  1334.                 str,
  1335.                 pSSL_state_string_long(s));
  1336.         pLayer->DoLayerCallback(LAYERCALLBACK_LAYERSPECIFIC, SSL_VERBOSE_INFO, 0, buffer);
  1337.     }
  1338.     else if (where & SSL_CB_ALERT)
  1339.     {
  1340.         str=(where & SSL_CB_READ)? "read" : "write";
  1341.         const char* desc = pSSL_alert_desc_string_long(ret);
  1342.  
  1343.         // Don't send close notify warning
  1344.         if (desc && strcmp(desc, "close notify"))
  1345.         {
  1346.             char *buffer = new char[4096];
  1347.             sprintf(buffer, "SSL3 alert %s: %s: %s",
  1348.                     str,
  1349.                     pSSL_alert_type_string_long(ret),
  1350.                     desc);
  1351.             pLayer->DoLayerCallback(LAYERCALLBACK_LAYERSPECIFIC, SSL_VERBOSE_WARNING, 0, buffer);
  1352.         }
  1353.     }
  1354.  
  1355.     else if (where & SSL_CB_EXIT)
  1356.     {
  1357.         if (ret == 0)
  1358.         {
  1359.             char *buffer = new char[4096];
  1360.             sprintf(buffer, "%s: failed in %s",
  1361.                     str,
  1362.                     pSSL_state_string_long(s));
  1363.             pLayer->DoLayerCallback(LAYERCALLBACK_LAYERSPECIFIC, SSL_VERBOSE_WARNING, 0, buffer);
  1364.             if (!pLayer->m_bFailureSent)
  1365.             {
  1366.                 pLayer->m_bFailureSent=TRUE;
  1367.                 pLayer->DoLayerCallback(LAYERCALLBACK_LAYERSPECIFIC, SSL_FAILURE, pLayer->m_bSslEstablished ? SSL_FAILURE_UNKNOWN : SSL_FAILURE_ESTABLISH);
  1368.             }
  1369.         }
  1370.         else if (ret < 0)
  1371.         {
  1372.             int error = pSSL_get_error(s,ret);
  1373.             if (error != SSL_ERROR_WANT_READ && error != SSL_ERROR_WANT_WRITE)
  1374.             {
  1375.                 char *buffer = new char[4096];
  1376.                 sprintf(buffer, "%s: error in %s",
  1377.                         str,
  1378.                         pSSL_state_string_long(s));
  1379.                 pLayer->DoLayerCallback(LAYERCALLBACK_LAYERSPECIFIC, SSL_VERBOSE_WARNING, 0, buffer);
  1380.                 if (!pLayer->m_bFailureSent)
  1381.                 {
  1382.                     pLayer->m_bFailureSent=TRUE;
  1383.                     pLayer->DoLayerCallback(LAYERCALLBACK_LAYERSPECIFIC, SSL_FAILURE, pLayer->m_bSslEstablished ? SSL_FAILURE_UNKNOWN : SSL_FAILURE_ESTABLISH);
  1384.                 }
  1385.             }
  1386.         }
  1387.     }
  1388.     if (where & SSL_CB_HANDSHAKE_DONE)
  1389.     {
  1390.         int error = pSSL_get_verify_result(pLayer->m_ssl);
  1391.         if (error)
  1392.         {
  1393.             pLayer->DoLayerCallback(LAYERCALLBACK_LAYERSPECIFIC, SSL_VERIFY_CERT, error);
  1394.             pLayer->m_bBlocking = TRUE;
  1395.             return;
  1396.         }
  1397.         pLayer->m_bSslEstablished = TRUE;
  1398.         pLayer->PrintSessionInfo();
  1399.         pLayer->DoLayerCallback(LAYERCALLBACK_LAYERSPECIFIC, SSL_INFO, SSL_INFO_ESTABLISHED);
  1400.         pLayer->TriggerEvents();
  1401.     }
  1402. }
  1403.  
  1404.  
  1405. void CAsyncSslSocketLayer::UnloadSSL()
  1406. {
  1407.     if (!m_bSslInitialized)
  1408.         return;
  1409.     ResetSslSession();
  1410.  
  1411.     m_bSslInitialized = false;
  1412.  
  1413.     m_sCriticalSection.Lock();
  1414.     m_nSslRefCount--;
  1415.     if (m_nSslRefCount)
  1416.     {
  1417.         m_sCriticalSection.Unlock();
  1418.         return;
  1419.     }
  1420.  
  1421.     if (m_hSslDll1)
  1422.         FreeLibrary(m_hSslDll1);
  1423.     if (m_hSslDll2)
  1424.     {
  1425.         FreeLibrary(m_hSslDll2);
  1426.         FreeLibrary(m_hSslDll2);
  1427.     }
  1428.     m_hSslDll1 = NULL;
  1429.     m_hSslDll2 = NULL;
  1430.     m_sCriticalSection.Unlock();
  1431. }
  1432.  
  1433. BOOL CAsyncSslSocketLayer::GetPeerCertificateData(t_SslCertData &SslCertData)
  1434. {
  1435.     X509 *pX509=pSSL_get_peer_certificate(m_ssl);
  1436.     if (!pX509)
  1437.         return FALSE;
  1438.  
  1439.     //Reset the contents of SslCertData
  1440.     memset(&SslCertData, 0, sizeof(t_SslCertData));
  1441.  
  1442.     //Set subject data fields
  1443.     X509_NAME *pX509Name=pX509_get_subject_name(pX509);
  1444.  
  1445.     if (pX509Name)
  1446.     {
  1447.         int count=pX509_NAME_entry_count(pX509Name);
  1448.         for (int i=0;i<count;i++)
  1449.         {
  1450.             X509_NAME_ENTRY *pX509NameEntry=pX509_NAME_get_entry(pX509Name,i);
  1451.             if (!pX509NameEntry)
  1452.                 continue;
  1453.             ASN1_OBJECT *pObject = pX509_NAME_ENTRY_get_object(pX509NameEntry);
  1454.             ASN1_STRING *pString = pX509_NAME_ENTRY_get_data(pX509NameEntry);
  1455.             CString str;
  1456.  
  1457.             unsigned char *out;
  1458.             int len = pASN1_STRING_to_UTF8(&out, pString);
  1459.             if (len > 0)
  1460.             {
  1461.                 // Keep it huge
  1462.                 LPWSTR unicode = new WCHAR[len * 10];
  1463.                 memset(unicode, 0, sizeof(WCHAR) * len * 10);
  1464.                 int unicodeLen = MultiByteToWideChar(CP_UTF8, 0, (const char *)out, len, unicode, len * 10);
  1465.                 if (unicodeLen > 0)
  1466.                 {
  1467. #ifdef _UNICODE
  1468.                     str = unicode;
  1469. #else
  1470.                     LPSTR ansi = new CHAR[len * 10];
  1471.                     memset(ansi, 0, sizeof(CHAR) * len * 10);
  1472.                     int ansiLen = WideCharToMultiByte(CP_ACP, 0, unicode, unicodeLen, ansi, len * 10, 0, 0);
  1473.                     if (ansiLen > 0)
  1474.                         str = ansi;
  1475.  
  1476.                     delete [] ansi;
  1477. #endif
  1478.                 }
  1479.                 delete [] unicode;
  1480.                 pCRYPTO_free(out);
  1481.             }
  1482.  
  1483.             switch(pOBJ_obj2nid(pObject))
  1484.             {
  1485.             case NID_organizationName:
  1486.                 _tcsncpy(SslCertData.subject.Organization, str, 255);
  1487.                 SslCertData.subject.Organization[255] = 0;
  1488.                 break;
  1489.             case NID_organizationalUnitName:
  1490.                 _tcsncpy(SslCertData.subject.Unit, str, 255);
  1491.                 SslCertData.subject.Unit[255] = 0;
  1492.                 break;
  1493.             case NID_commonName:
  1494.                 _tcsncpy(SslCertData.subject.CommonName, str, 255);
  1495.                 SslCertData.subject.CommonName[255] = 0;
  1496.                 break;
  1497.             case NID_pkcs9_emailAddress:
  1498.                 _tcsncpy(SslCertData.subject.Mail, str, 255);
  1499.                 SslCertData.subject.Mail[255] = 0;
  1500.                 break;
  1501.             case NID_countryName:
  1502.                 _tcsncpy(SslCertData.subject.Country, str, 255);
  1503.                 SslCertData.subject.Country[255] = 0;
  1504.                 break;
  1505.             case NID_stateOrProvinceName:
  1506.                 _tcsncpy(SslCertData.subject.StateProvince, str, 255);
  1507.                 SslCertData.subject.StateProvince[255] = 0;
  1508.                 break;
  1509.             case NID_localityName:
  1510.                 _tcsncpy(SslCertData.subject.Town, str, 255);
  1511.                 SslCertData.subject.Town[255] = 0;
  1512.                 break;
  1513.             default:
  1514.                 if ( !pOBJ_nid2sn(pOBJ_obj2nid(pObject)) )
  1515.                 {
  1516.                     TCHAR tmp[20];
  1517.                     _stprintf(tmp, _T("%d"), pOBJ_obj2nid(pObject));
  1518.                     int maxlen = 1024 - _tcslen(SslCertData.subject.Other)-1;
  1519.                     _tcsncpy(SslCertData.subject.Other+_tcslen(SslCertData.subject.Other), tmp, maxlen);
  1520.  
  1521.                     maxlen = 1024 - _tcslen(SslCertData.subject.Other)-1;
  1522.                     _tcsncpy(SslCertData.subject.Other+_tcslen(SslCertData.subject.Other), _T("="), maxlen);
  1523.  
  1524.                     maxlen = 1024 - _tcslen(SslCertData.subject.Other)-1;
  1525.                     _tcsncpy(SslCertData.subject.Other+_tcslen(SslCertData.subject.Other), str, maxlen);
  1526.  
  1527.                     maxlen = 1024 - _tcslen(SslCertData.subject.Other)-1;
  1528.                     _tcsncpy(SslCertData.subject.Other+_tcslen(SslCertData.subject.Other), _T(";"), maxlen);
  1529.                 }
  1530.                 else
  1531.                 {
  1532.                     int maxlen = 1024 - _tcslen(SslCertData.subject.Other)-1;
  1533.  
  1534.                     USES_CONVERSION;
  1535.                     _tcsncpy(SslCertData.subject.Other+_tcslen(SslCertData.subject.Other), A2CT(pOBJ_nid2sn(pOBJ_obj2nid(pObject))), maxlen);
  1536.  
  1537.                     maxlen = 1024 - _tcslen(SslCertData.subject.Other)-1;
  1538.                     _tcsncpy(SslCertData.subject.Other+_tcslen(SslCertData.subject.Other), _T("="), maxlen);
  1539.  
  1540.                     maxlen = 1024 - _tcslen(SslCertData.subject.Other)-1;
  1541.                     _tcsncpy(SslCertData.subject.Other+_tcslen(SslCertData.subject.Other), str, maxlen);
  1542.  
  1543.                     maxlen = 1024 - _tcslen(SslCertData.subject.Other)-1;
  1544.                     _tcsncpy(SslCertData.subject.Other+_tcslen(SslCertData.subject.Other), _T(";"), maxlen);
  1545.                 }
  1546.                 break;
  1547.             }
  1548.         }
  1549.     }
  1550.  
  1551.     //Set issuer data fields
  1552.     pX509Name=pX509_get_issuer_name(pX509);
  1553.     if (pX509Name)
  1554.     {
  1555.         int count=pX509_NAME_entry_count(pX509Name);
  1556.         for (int i=0;i<count;i++)
  1557.         {
  1558.             X509_NAME_ENTRY *pX509NameEntry=pX509_NAME_get_entry(pX509Name,i);
  1559.             if (!pX509NameEntry)
  1560.                 continue;
  1561.             ASN1_STRING *pString=pX509_NAME_ENTRY_get_data(pX509NameEntry);
  1562.             ASN1_OBJECT *pObject=pX509_NAME_ENTRY_get_object(pX509NameEntry);
  1563.  
  1564.             CString str;
  1565.  
  1566.             unsigned char *out;
  1567.             int len = pASN1_STRING_to_UTF8(&out, pString);
  1568.             if (len > 0)
  1569.             {
  1570.                 // Keep it huge
  1571.                 LPWSTR unicode = new WCHAR[len * 10];
  1572.                 memset(unicode, 0, sizeof(WCHAR) * len * 10);
  1573.                 int unicodeLen = MultiByteToWideChar(CP_UTF8, 0, (const char *)out, len, unicode, len * 10);
  1574.                 if (unicodeLen > 0)
  1575.                 {
  1576. #ifdef _UNICODE
  1577.                     str = unicode;
  1578. #else
  1579.                     LPSTR ansi = new CHAR[len * 10];
  1580.                     memset(ansi, 0, sizeof(CHAR) * len * 10);
  1581.                     int ansiLen = WideCharToMultiByte(CP_ACP, 0, unicode, unicodeLen, ansi, len * 10, 0, 0);
  1582.                     if (ansiLen > 0)
  1583.                         str = ansi;
  1584.  
  1585.                     delete [] ansi;
  1586. #endif
  1587.                 }
  1588.                 delete [] unicode;
  1589.                 pCRYPTO_free(out);
  1590.             }
  1591.  
  1592.             switch(pOBJ_obj2nid(pObject))
  1593.             {
  1594.             case NID_organizationName:
  1595.                 _tcsncpy(SslCertData.issuer.Organization, str, 255);
  1596.                 SslCertData.issuer.Organization[255] = 0;
  1597.                 break;
  1598.             case NID_organizationalUnitName:
  1599.                 _tcsncpy(SslCertData.issuer.Unit, str, 255);
  1600.                 SslCertData.issuer.Unit[255] = 0;
  1601.                 break;
  1602.             case NID_commonName:
  1603.                 _tcsncpy(SslCertData.issuer.CommonName, str, 255);
  1604.                 SslCertData.issuer.CommonName[255] = 0;
  1605.                 break;
  1606.             case NID_pkcs9_emailAddress:
  1607.                 _tcsncpy(SslCertData.issuer.Mail, str, 255);
  1608.                 SslCertData.issuer.Mail[255] = 0;
  1609.                 break;
  1610.             case NID_countryName:
  1611.                 _tcsncpy(SslCertData.issuer.Country, str, 255);
  1612.                 SslCertData.issuer.Country[255] = 0;
  1613.                 break;
  1614.             case NID_stateOrProvinceName:
  1615.                 _tcsncpy(SslCertData.issuer.StateProvince, str, 255);
  1616.                 SslCertData.issuer.StateProvince[255] = 0;
  1617.                 break;
  1618.             case NID_localityName:
  1619.                 _tcsncpy(SslCertData.issuer.Town, str, 255);
  1620.                 SslCertData.issuer.Town[255] = 0;
  1621.                 break;
  1622.             default:
  1623.                 if ( !pOBJ_nid2sn(pOBJ_obj2nid(pObject)) )
  1624.                 {
  1625.                     TCHAR tmp[20];
  1626.                     _stprintf(tmp, _T("%d"), pOBJ_obj2nid(pObject));
  1627.                     int maxlen = 1024 - _tcslen(SslCertData.issuer.Other)-1;
  1628.                     _tcsncpy(SslCertData.issuer.Other+_tcslen(SslCertData.issuer.Other), tmp, maxlen);
  1629.  
  1630.                     maxlen = 1024 - _tcslen(SslCertData.issuer.Other)-1;
  1631.                     _tcsncpy(SslCertData.issuer.Other+_tcslen(SslCertData.issuer.Other), _T("="), maxlen);
  1632.  
  1633.                     maxlen = 1024 - _tcslen(SslCertData.issuer.Other)-1;
  1634.                     _tcsncpy(SslCertData.issuer.Other+_tcslen(SslCertData.issuer.Other), str, maxlen);
  1635.  
  1636.                     maxlen = 1024 - _tcslen(SslCertData.issuer.Other)-1;
  1637.                     _tcsncpy(SslCertData.issuer.Other+_tcslen(SslCertData.issuer.Other), _T(";"), maxlen);
  1638.                 }
  1639.                 else
  1640.                 {
  1641.                     int maxlen = 1024 - _tcslen(SslCertData.issuer.Other)-1;
  1642.  
  1643.                     USES_CONVERSION;
  1644.                     _tcsncpy(SslCertData.issuer.Other+_tcslen(SslCertData.issuer.Other), A2CT(pOBJ_nid2sn(pOBJ_obj2nid(pObject))), maxlen);
  1645.  
  1646.                     maxlen = 1024 - _tcslen(SslCertData.issuer.Other)-1;
  1647.                     _tcsncpy(SslCertData.issuer.Other+_tcslen(SslCertData.issuer.Other), _T("="), maxlen);
  1648.  
  1649.                     maxlen = 1024 - _tcslen(SslCertData.issuer.Other)-1;
  1650.                     _tcsncpy(SslCertData.issuer.Other+_tcslen(SslCertData.issuer.Other), str, maxlen);
  1651.  
  1652.                     maxlen = 1024 - _tcslen(SslCertData.issuer.Other)-1;
  1653.                     _tcsncpy(SslCertData.issuer.Other+_tcslen(SslCertData.issuer.Other), _T(";"), maxlen);
  1654.                 }
  1655.                 break;
  1656.             }
  1657.         }
  1658.     }
  1659.  
  1660.     //Set date fields
  1661.  
  1662.     static const char *mon[12]=
  1663.     {
  1664.     "Jan","Feb","Mar","Apr","May","Jun",
  1665.     "Jul","Aug","Sep","Oct","Nov","Dec"
  1666.     };
  1667.  
  1668.     //Valid from
  1669.     ASN1_UTCTIME *pTime=X509_get_notBefore(pX509);
  1670.     if (!pTime)
  1671.     {
  1672.         pX509_free(pX509);
  1673.         return FALSE;
  1674.     }
  1675.  
  1676.     char *v;
  1677.     int gmt = 0;
  1678.     int i;
  1679.     int y=0, M=0, d=0, h=0, m=0, s=0;
  1680.  
  1681.     i = pTime->length;
  1682.     v = (char *)pTime->data;
  1683.  
  1684.     if (i < 10)
  1685.     {
  1686.         pX509_free(pX509);
  1687.         return FALSE;
  1688.     }
  1689.     if (v[i-1] == 'Z') gmt=1;
  1690.     for (i=0; i<10; i++)
  1691.         if ((v[i] > '9') || (v[i] < '0'))
  1692.         {
  1693.             pX509_free(pX509);
  1694.             return FALSE;
  1695.         }
  1696.     y= (v[0]-'0')*10+(v[1]-'0');
  1697.     if (y < 50) y+=100;
  1698.     M= (v[2]-'0')*10+(v[3]-'0');
  1699.     if ((M > 12) || (M < 1))
  1700.     {
  1701.         pX509_free(pX509);
  1702.         return FALSE;
  1703.     }
  1704.     d= (v[4]-'0')*10+(v[5]-'0');
  1705.     h= (v[6]-'0')*10+(v[7]-'0');
  1706.     m=  (v[8]-'0')*10+(v[9]-'0');
  1707.     if (    (v[10] >= '0') && (v[10] <= '9') &&
  1708.         (v[11] >= '0') && (v[11] <= '9'))
  1709.         s=  (v[10]-'0')*10+(v[11]-'0');
  1710.  
  1711.     SslCertData.validFrom.y = y+1900;
  1712.     SslCertData.validFrom.M = M;
  1713.     SslCertData.validFrom.d = d;
  1714.     SslCertData.validFrom.h = h;
  1715.     SslCertData.validFrom.m = m;
  1716.     SslCertData.validFrom.s = s;
  1717.  
  1718.     //Valid until
  1719.     pTime = X509_get_notAfter(pX509);
  1720.     if (!pTime)
  1721.     {
  1722.         pX509_free(pX509);
  1723.         return FALSE;
  1724.     }
  1725.  
  1726.     gmt = 0;
  1727.     i;
  1728.     y=0,M=0,d=0,h=0,m=0,s=0;
  1729.  
  1730.     i=pTime->length;
  1731.     v=(char *)pTime->data;
  1732.  
  1733.     if (i < 10)
  1734.     {
  1735.         pX509_free(pX509);
  1736.         return FALSE;
  1737.     }
  1738.     if (v[i-1] == 'Z') gmt=1;
  1739.     for (i=0; i<10; i++)
  1740.         if ((v[i] > '9') || (v[i] < '0'))
  1741.         {
  1742.             pX509_free(pX509);
  1743.             return FALSE;
  1744.         }
  1745.     y= (v[0]-'0')*10+(v[1]-'0');
  1746.     if (y < 50) y+=100;
  1747.     M= (v[2]-'0')*10+(v[3]-'0');
  1748.     if ((M > 12) || (M < 1))
  1749.     {
  1750.         pX509_free(pX509);
  1751.         return FALSE;
  1752.     }
  1753.     d= (v[4]-'0')*10+(v[5]-'0');
  1754.     h= (v[6]-'0')*10+(v[7]-'0');
  1755.     m=  (v[8]-'0')*10+(v[9]-'0');
  1756.     if (    (v[10] >= '0') && (v[10] <= '9') &&
  1757.         (v[11] >= '0') && (v[11] <= '9'))
  1758.         s=  (v[10]-'0')*10+(v[11]-'0');
  1759.  
  1760.     SslCertData.validUntil.y = y+1900;
  1761.     SslCertData.validUntil.M = M;
  1762.     SslCertData.validUntil.d = d;
  1763.     SslCertData.validUntil.h = h;
  1764.     SslCertData.validUntil.m = m;
  1765.     SslCertData.validUntil.s = s;
  1766.  
  1767.     unsigned int length = 20;
  1768.     pX509_digest(pX509, pEVP_sha1(), SslCertData.hash, &length);
  1769.  
  1770.     SslCertData.priv_data = m_nSslAsyncNotifyId;
  1771.  
  1772.     pX509_free(pX509);
  1773.  
  1774.     SslCertData.verificationResult = m_nVerificationResult;
  1775.     SslCertData.verificationDepth = m_nVerificationDepth;
  1776.  
  1777.     return TRUE;
  1778. }
  1779.  
  1780. void CAsyncSslSocketLayer::SetNotifyReply(int nID, int nCode, int result)
  1781. {
  1782.     if (!m_bBlocking)
  1783.         return;
  1784.     if (nID != m_nSslAsyncNotifyId)
  1785.         return;
  1786.     if (nCode != SSL_VERIFY_CERT)
  1787.         return;
  1788.  
  1789.     m_bBlocking = FALSE;
  1790.  
  1791.     if (!result)
  1792.     {
  1793.         m_nNetworkError = WSAECONNABORTED;
  1794.         WSASetLastError(WSAECONNABORTED);
  1795.         if (!m_bFailureSent)
  1796.         {
  1797.             m_bFailureSent = TRUE;
  1798.             DoLayerCallback(LAYERCALLBACK_LAYERSPECIFIC, SSL_FAILURE, SSL_FAILURE_CERTREJECTED);
  1799.         }
  1800.         TriggerEvent(FD_CLOSE, 0, TRUE);
  1801.         return;
  1802.     }
  1803.     m_bSslEstablished = TRUE;
  1804.     PrintSessionInfo();
  1805.     DoLayerCallback(LAYERCALLBACK_LAYERSPECIFIC, SSL_INFO, SSL_INFO_ESTABLISHED);
  1806.  
  1807.     TriggerEvents();
  1808. }
  1809.  
  1810. void CAsyncSslSocketLayer::PrintSessionInfo()
  1811. {
  1812.     SSL_CIPHER *ciph;
  1813.     X509 *cert;
  1814.  
  1815.     ciph = pSSL_get_current_cipher(m_ssl);
  1816.     char enc[4096] = {0};
  1817.     cert=pSSL_get_peer_certificate(m_ssl);
  1818.  
  1819.     if (cert != NULL)
  1820.     {
  1821.         EVP_PKEY *pkey = pX509_get_pubkey(cert);
  1822.         if (pkey != NULL)
  1823.         {
  1824.             if (0)
  1825.                 ;
  1826. #ifndef NO_RSA
  1827.             else if (pkey->type == EVP_PKEY_RSA && pkey->pkey.rsa != NULL
  1828.                 && pkey->pkey.rsa->n != NULL)
  1829.                 sprintf(enc,    "%d bit RSA", pBN_num_bits(pkey->pkey.rsa->n));
  1830. #endif
  1831. #ifndef NO_DSA
  1832.             else if (pkey->type == EVP_PKEY_DSA && pkey->pkey.dsa != NULL
  1833.                     && pkey->pkey.dsa->p != NULL)
  1834.                 sprintf(enc,    "%d bit DSA", pBN_num_bits(pkey->pkey.dsa->p));
  1835. #endif
  1836.             pEVP_PKEY_free(pkey);
  1837.         }
  1838.         pX509_free(cert);
  1839.         /* The SSL API does not allow us to look at temporary RSA/DH keys,
  1840.          * otherwise we should print their lengths too */
  1841.     }
  1842.  
  1843.     char *buffer = new char[4096];
  1844.     sprintf(buffer, "Using %s, cipher %s: %s, %s",
  1845.             pSSL_get_version(m_ssl),
  1846.             pSSL_CIPHER_get_version(ciph),
  1847.             pSSL_CIPHER_get_name(ciph),
  1848.             enc);
  1849.     DoLayerCallback(LAYERCALLBACK_LAYERSPECIFIC, SSL_VERBOSE_INFO, 0, buffer);
  1850. }
  1851.  
  1852. void CAsyncSslSocketLayer::OnConnect(int nErrorCode)
  1853. {
  1854.     if (m_bUseSSL && nErrorCode)
  1855.         TriggerEvent(FD_WRITE, 0);
  1856.     TriggerEvent(FD_CONNECT, nErrorCode, TRUE);
  1857. }
  1858.  
  1859. int CAsyncSslSocketLayer::verify_callback(int preverify_ok, X509_STORE_CTX *ctx)
  1860. {
  1861.     X509   *err_cert;
  1862.     int     err, depth;
  1863.     SSL    *ssl;
  1864.  
  1865.     err_cert = pX509_STORE_CTX_get_current_cert(ctx);
  1866.     err = pX509_STORE_CTX_get_error(ctx);
  1867.     depth = pX509_STORE_CTX_get_error_depth(ctx);
  1868.  
  1869.     /*
  1870.      * Retrieve the pointer to the SSL of the connection currently treated
  1871.      * and the application specific data stored into the SSL object.
  1872.      */
  1873.     ssl = (SSL *)pX509_STORE_CTX_get_ex_data(ctx, pSSL_get_ex_data_X509_STORE_CTX_idx());
  1874.  
  1875.     // Lookup CAsyncSslSocketLayer instance
  1876.     CAsyncSslSocketLayer *pLayer = 0;
  1877.     m_sCriticalSection.Lock();
  1878.     t_SslLayerList *cur = m_pSslLayerList;
  1879.     while (cur)
  1880.     {
  1881.         if (cur->pLayer->m_ssl == ssl)
  1882.             break;
  1883.         cur = cur->pNext;
  1884.     }
  1885.     if (!cur)
  1886.     {
  1887.         m_sCriticalSection.Unlock();
  1888.         //MessageBox(0, _T("Can't lookup SSL session!"), _T("Critical error"), MB_ICONEXCLAMATION);
  1889.         return 1;
  1890.     }
  1891.     else
  1892.         pLayer = cur->pLayer;
  1893.     m_sCriticalSection.Unlock();
  1894.  
  1895.     /*
  1896.      * Catch a too long certificate chain. The depth limit set using
  1897.      * SSL_CTX_set_verify_depth() is by purpose set to "limit+1" so
  1898.      * that whenever the "depth>verify_depth" condition is met, we
  1899.      * have violated the limit and want to log this error condition.
  1900.      * We must do it here, because the CHAIN_TOO_LONG error would not
  1901.      * be found explicitly; only errors introduced by cutting off the
  1902.      * additional certificates would be logged.
  1903.      */
  1904.     if (depth > 10) {//mydata->verify_depth) {
  1905.         preverify_ok = 0;
  1906.         err = X509_V_ERR_CERT_CHAIN_TOO_LONG;
  1907.         pX509_STORE_CTX_set_error(ctx, err);
  1908.     }
  1909.  
  1910.     if (!preverify_ok)
  1911.     {
  1912.         if (!pLayer->m_nVerificationResult)
  1913.         {
  1914.             pLayer->m_nVerificationDepth = depth;
  1915.             pLayer->m_nVerificationResult = err;
  1916.         }
  1917.     }
  1918.     return 1;
  1919. }
  1920.  
  1921. BOOL CAsyncSslSocketLayer::SetCertStorage(CString file)
  1922. {
  1923.     m_CertStorage = file;
  1924.     return TRUE;
  1925. }
  1926.  
  1927. void CAsyncSslSocketLayer::OnClose(int nErrorCode)
  1928. {
  1929.     m_onCloseCalled = true;
  1930.     if (m_bUseSSL && pBIO_ctrl && pBIO_ctrl(m_sslbio, BIO_CTRL_PENDING, 0, NULL) > 0)
  1931.     {
  1932.         TriggerEvents();
  1933.     }
  1934.     else
  1935.         TriggerEvent(FD_CLOSE, nErrorCode, TRUE);
  1936. }
  1937.  
  1938. bool CAsyncSslSocketLayer::PrintLastErrorMsg()
  1939. {
  1940.     bool fatal = false;
  1941.     int err = pERR_get_error();
  1942.     while (err)
  1943.     {
  1944.         // Something about an undefined const function or
  1945.         // so, no idea where that comes from. OpenSSL is a mess
  1946.         if (err != 336539714)
  1947.             fatal = true;
  1948.         char *buffer = new char[512];
  1949.         pERR_error_string(err, buffer);
  1950.         err = pERR_get_error();
  1951.         DoLayerCallback(LAYERCALLBACK_LAYERSPECIFIC, SSL_VERBOSE_WARNING, 0, buffer);
  1952.     }
  1953.  
  1954.     return fatal;
  1955. }
  1956.  
  1957. void CAsyncSslSocketLayer::ClearErrors()
  1958. {
  1959.     int err = pERR_get_error();
  1960.     while (err)
  1961.         err = pERR_get_error();
  1962. }
  1963.  
  1964. bool CAsyncSslSocketLayer::CreateSslCertificate(LPCTSTR filename, int bits, unsigned char* country, unsigned char* state,
  1965.             unsigned char* locality, unsigned char* organization, unsigned char* unit, unsigned char* cname,
  1966.             unsigned char *email, CString& err)
  1967. {
  1968.     // Certificate valid for a year
  1969.     int days = 365;
  1970.  
  1971.     CAsyncSslSocketLayer layer;
  1972.     if (layer.InitSSL())
  1973.     {
  1974.         err = _T("Failed to initialize SSL library");
  1975.         return false;
  1976.     }
  1977.  
  1978.     X509 *x;
  1979.     EVP_PKEY *pk;
  1980.     RSA *rsa;
  1981.     X509_NAME *name = NULL;
  1982.     
  1983.     if ((pk = pEVP_PKEY_new()) == NULL)
  1984.     {
  1985.         err = _T("Could not create key object");
  1986.         return false;
  1987.     }
  1988.  
  1989.     if ((x = pX509_new()) == NULL)
  1990.     {
  1991.         err = _T("Could not create certificate object");
  1992.         return false;
  1993.     }
  1994.  
  1995.     rsa = pRSA_generate_key(bits, RSA_F4, 0/*callback*/, NULL);
  1996.     
  1997.     if (!pEVP_PKEY_assign(pk, EVP_PKEY_RSA, (char *)(rsa)))
  1998.     {
  1999.         err = _T("Failed to assign rsa key to key object");
  2000.         return false;
  2001.     }
  2002.  
  2003.     rsa = NULL;
  2004.  
  2005.     pX509_set_version(x,2);
  2006.     pASN1_INTEGER_set(pX509_get_serialNumber(x), 0/*serial*/);
  2007.     pX509_gmtime_adj(X509_get_notBefore(x),0);
  2008.     pX509_gmtime_adj(X509_get_notAfter(x),(long)60*60*24*days);
  2009.     pX509_set_pubkey(x,pk);
  2010.  
  2011.     name = pX509_get_subject_name(x);
  2012.  
  2013.     /* This function creates and adds the entry, working out the
  2014.      * correct string type and performing checks on its length.
  2015.      * Normally we'd check the return value for errors...
  2016.      */
  2017.     pX509_NAME_add_entry_by_txt(name, "CN",
  2018.                 MBSTRING_ASC, cname, -1, -1, 0);
  2019.     pX509_NAME_add_entry_by_txt(name, "C",
  2020.                 MBSTRING_ASC, country, -1, -1, 0);
  2021.     pX509_NAME_add_entry_by_txt(name, "ST",
  2022.                 MBSTRING_ASC, state, -1, -1, 0);
  2023.     pX509_NAME_add_entry_by_txt(name, "L",
  2024.                 MBSTRING_ASC, locality, -1, -1, 0);
  2025.     pX509_NAME_add_entry_by_txt(name, "O",
  2026.                 MBSTRING_ASC, organization, -1, -1, 0);
  2027.     pX509_NAME_add_entry_by_txt(name, "OU",
  2028.                 MBSTRING_ASC, unit, -1, -1, 0);
  2029.     pX509_NAME_add_entry_by_NID(name, NID_pkcs9_emailAddress,
  2030.                 MBSTRING_ASC, email, -1, -1, 0);
  2031.  
  2032.     /* Its self signed so set the issuer name to be the same as the
  2033.       * subject.
  2034.      */
  2035.     pX509_set_issuer_name(x,name);
  2036.  
  2037.     if (!pX509_sign(x, pk, pEVP_sha1()))
  2038.     {
  2039.         err = _T("Failed to sign certificate");
  2040.         return false;
  2041.     }
  2042.  
  2043.     // Write key and certificate to file
  2044.     // We use a memory bio, since the OpenSSL functions accepting a filepointer 
  2045.     // do crash for no obvious reason.
  2046.  
  2047. #ifndef _UNICODE
  2048.     FILE* file = fopen(filename, "w+");
  2049. #else
  2050.     FILE* file = _wfopen(filename, _T("w+"));
  2051. #endif
  2052.  
  2053.     if (!file)
  2054.     {
  2055.         err = _T("Failed to open output file");
  2056.         return false;
  2057.     }
  2058.  
  2059.     BIO* bio = pBIO_new(pBIO_s_mem());
  2060.     pPEM_ASN1_write_bio((int (*)())pi2d_PrivateKey, (((pk)->type == EVP_PKEY_DSA)?PEM_STRING_DSA:PEM_STRING_RSA), bio, (char *)pk, NULL, NULL, 0, NULL, NULL);
  2061.     pPEM_ASN1_write_bio((int (*)())pi2d_X509, PEM_STRING_X509, bio, (char *)x, NULL, NULL, 0, NULL, NULL);
  2062.     
  2063.     char buffer[1001];
  2064.     int len;
  2065.     while ((len = pBIO_read(bio, buffer, 1000)) > 0)
  2066.     {
  2067.         buffer[len] = 0;
  2068.         fprintf(file, buffer);
  2069.     }
  2070.  
  2071.     fclose(file);
  2072.  
  2073.     pX509_free(x);
  2074.     pEVP_PKEY_free(pk);
  2075.  
  2076.     pBIO_free(bio);
  2077.  
  2078.     layer.UnloadSSL();
  2079.  
  2080.     return true;
  2081. }
  2082.  
  2083. int CAsyncSslSocketLayer::SetCertKeyFile(const char* cert, const char* key, const char* pass, CString* error /*=0*/)
  2084. {
  2085.     int res = InitSSL();
  2086.     if (res)
  2087.         return res;
  2088.  
  2089.     m_sCriticalSection.Lock();
  2090.     
  2091.     if (!m_ssl_ctx)
  2092.     {
  2093.         // Create new context
  2094.         if (!(m_ssl_ctx = pSSL_CTX_new( pSSLv23_method())))
  2095.         {
  2096.             m_sCriticalSection.Unlock();
  2097.             return SSL_FAILURE_INITSSL;
  2098.         }
  2099.         m_contextRefCount[m_ssl_ctx] = 1;
  2100.  
  2101.         long options = pSSL_CTX_ctrl(m_ssl_ctx, SSL_CTRL_OPTIONS, 0, NULL);
  2102.         pSSL_CTX_ctrl(m_ssl_ctx, SSL_CTRL_OPTIONS, options | SSL_OP_NO_SSLv2, NULL);
  2103.     }
  2104.  
  2105.     pSSL_CTX_set_default_passwd_cb(m_ssl_ctx, pem_passwd_cb);
  2106.     pSSL_CTX_set_default_passwd_cb_userdata(m_ssl_ctx, this);
  2107.  
  2108.     if (pass)
  2109.     {
  2110.         size_t len = strlen(pass);
  2111.         m_pKeyPassword = new char[len + 1];
  2112.         strcpy(m_pKeyPassword, pass);
  2113.     }
  2114.     else
  2115.     {
  2116.         delete [] m_pKeyPassword;
  2117.         m_pKeyPassword = 0;
  2118.     }
  2119.  
  2120.     ClearErrors();
  2121.     if (pSSL_CTX_use_certificate_chain_file(m_ssl_ctx, cert) <= 0)
  2122.     //if (pSSL_CTX_use_certificate_file(m_ssl_ctx, cert, SSL_FILETYPE_PEM) <= 0)
  2123.     {
  2124.         if (error)
  2125.             *error = _T("Could not load certificate file.");
  2126.         m_sCriticalSection.Unlock();
  2127.         return SSL_FAILURE_VERIFYCERT;
  2128.     }
  2129.  
  2130.     if (pSSL_CTX_use_PrivateKey_file(m_ssl_ctx, key, SSL_FILETYPE_PEM) <= 0)
  2131.     {
  2132.         if (error)
  2133.             *error = _T("Could not load key file.");
  2134.         m_sCriticalSection.Unlock();
  2135.         return SSL_FAILURE_VERIFYCERT;
  2136.     }
  2137.  
  2138.     if (!pSSL_CTX_check_private_key(m_ssl_ctx))
  2139.     {
  2140.         if (error)
  2141.             *error = _T("Private key does not match the certificate public key.");
  2142.         m_sCriticalSection.Unlock();
  2143.         return SSL_FAILURE_VERIFYCERT;
  2144.     }
  2145.  
  2146.     m_sCriticalSection.Unlock();
  2147.  
  2148.     return 0;
  2149. }
  2150.  
  2151. int CAsyncSslSocketLayer::SendRaw(const void* lpBuf, int nBufLen, int nFlags)
  2152. {
  2153.     if (!m_bUseSSL)
  2154.     {
  2155.         SetLastError(WSANOTINITIALISED);
  2156.         return SOCKET_ERROR;
  2157.     }
  2158.  
  2159.     if (!lpBuf)
  2160.         return 0;
  2161.     
  2162.     if (m_nNetworkError)
  2163.     {
  2164.         SetLastError(m_nNetworkError);
  2165.         return SOCKET_ERROR;
  2166.     }
  2167.     if (m_nShutDown)
  2168.     {
  2169.         SetLastError(WSAESHUTDOWN);
  2170.         return SOCKET_ERROR;
  2171.     }
  2172.     if (m_nNetworkSendBufferLen)
  2173.     {
  2174.         SetLastError(WSAEINPROGRESS);
  2175.         return SOCKET_ERROR;
  2176.     }
  2177.     if (!nBufLen)
  2178.         return 0;
  2179.  
  2180.     if (m_nNetworkSendBufferMaxLen < nBufLen)
  2181.         m_nNetworkSendBufferMaxLen = nBufLen;
  2182.     delete [] m_pNetworkSendBuffer;
  2183.     m_pNetworkSendBuffer = new char[m_nNetworkSendBufferMaxLen];
  2184.     memcpy(m_pNetworkSendBuffer, lpBuf, nBufLen);
  2185.     m_nNetworkSendBufferLen = nBufLen;
  2186.     TriggerEvent(FD_WRITE, 0);
  2187.  
  2188.     return nBufLen;
  2189. }
  2190.  
  2191. void CAsyncSslSocketLayer::TriggerEvents()
  2192. {
  2193.     if (pBIO_ctrl_pending(m_nbio) > 0)
  2194.     {
  2195.         if (m_mayTriggerWrite)
  2196.         {
  2197.             m_mayTriggerWrite = false;
  2198.             TriggerEvent(FD_WRITE, 0);
  2199.         }
  2200.     }
  2201.     else if (!m_nNetworkSendBufferLen && m_bSslEstablished && !m_pRetrySendBuffer && pBIO_ctrl_get_write_guarantee(m_sslbio) > 0 && m_mayTriggerWriteUp)
  2202.     {
  2203.         m_mayTriggerWriteUp = false;
  2204.         TriggerEvent(FD_WRITE, 0, TRUE);
  2205.     }
  2206.  
  2207.     if (m_bSslEstablished && pBIO_ctrl_pending(m_sslbio) > 0)
  2208.     {
  2209.         if (m_mayTriggerReadUp && !m_bBlocking)
  2210.         {
  2211.             m_mayTriggerReadUp = false;
  2212.             TriggerEvent(FD_READ, 0, TRUE);
  2213.         }
  2214.     }
  2215.     else if (pBIO_ctrl_get_write_guarantee(m_nbio) > 0 && m_mayTriggerRead)
  2216.     {
  2217.         m_mayTriggerRead = false;
  2218.         TriggerEvent(FD_READ, 0);
  2219.     }
  2220.  
  2221.     if (m_onCloseCalled && m_bSslEstablished && pBIO_ctrl_pending(m_sslbio) <= 0)
  2222.         TriggerEvent(FD_CLOSE, 0, TRUE);
  2223. }
  2224.  
  2225. int CAsyncSslSocketLayer::pem_passwd_cb(char *buf, int size, int rwflag, void *userdata)
  2226. {
  2227.     CAsyncSslSocketLayer* pThis = (CAsyncSslSocketLayer*)userdata;
  2228.  
  2229.     if (!pThis || !pThis->m_pKeyPassword)
  2230.         return 0;
  2231.  
  2232.     int len = strlen(pThis->m_pKeyPassword);
  2233.     if (len >= size)
  2234.         len = size - 1;
  2235.  
  2236.     memcpy(buf, pThis->m_pKeyPassword, len);
  2237.     buf[len] = 0;
  2238.  
  2239.     return len;
  2240. }
  2241.