/* Make a secure HTTP request to a defined IP and port Connection is made in blocking socket mode The connection is considered successful if the SSL/TLS session is negotiated successfully, a request is sent, and a HTTP response is received. */ static int32 httpsClientConnection(sslKeys_t *keys, sslSessionId_t *sid) { int32 rc, transferred, len, complete; ssl_t *ssl; unsigned char *buf; httpConn_t cp; SOCKET fd; complete = 0; memset(&cp, 0x0, sizeof(httpConn_t)); fd = socketConnect(HTTPS_IP, HTTPS_PORT, &rc); if (fd == INVALID_SOCKET || rc != PS_SUCCESS) { _psTraceInt("Connect failed: %d. Exiting\n", rc); return PS_PLATFORM_FAIL; } rc = matrixSslNewClientSession(&ssl, keys, sid, 0, certCb, NULL, NULL); if (rc != MATRIXSSL_REQUEST_SEND) { _psTraceInt("New Client Session Failed: %d. Exiting\n", rc); close(fd); return PS_ARG_FAIL; } WRITE_MORE: while ((len = matrixSslGetOutdata(ssl, &buf)) > 0) { transferred = send(fd, buf, len, 0); if (transferred <= 0) { goto L_CLOSE_ERR; } else { /* Indicate that we've written > 0 bytes of data */ if ((rc = matrixSslSentData(ssl, transferred)) < 0) { goto L_CLOSE_ERR; } if (rc == MATRIXSSL_REQUEST_CLOSE) { closeConn(ssl, fd); return MATRIXSSL_SUCCESS; } if (rc == MATRIXSSL_HANDSHAKE_COMPLETE) { /* If we sent the Finished SSL message, initiate the HTTP req */ /* (This occurs on a resumption handshake) */ if (httpWriteRequest(ssl) < 0) { goto L_CLOSE_ERR; } goto WRITE_MORE; } /* SSL_REQUEST_SEND is handled by loop logic */ } } READ_MORE: if ((len = matrixSslGetReadbuf(ssl, &buf)) <= 0) { goto L_CLOSE_ERR; } if ((transferred = recv(fd, buf, len, 0)) < 0) { goto L_CLOSE_ERR; } /* If EOF, remote socket closed. But we haven't received the HTTP response so we consider it an error in the case of an HTTP client */ if (transferred == 0) { goto L_CLOSE_ERR; } if ((rc = matrixSslReceivedData(ssl, (int32)transferred, &buf, (uint32*)&len)) < 0) { goto L_CLOSE_ERR; } PROCESS_MORE: switch (rc) { case MATRIXSSL_HANDSHAKE_COMPLETE: #ifdef REHANDSHAKE_TEST /* Test rehandshake capabilities of server. If a successful session resmption rehandshake occurs, this client will be last to send handshake data and MATRIXSSL_HANDSHAKE_COMPLETE will hit on the WRITE_MORE handler and httpWriteRequest will occur there. NOTE: If the server doesn't support session resumption it is possible to fall into an endless rehandshake loop */ if (matrixSslEncodeRehandshake(ssl, NULL, NULL, 0, 0) < 0) { goto L_CLOSE_ERR; } #else /* We got the Finished SSL message, initiate the HTTP req */ if (httpWriteRequest(ssl) < 0) { goto L_CLOSE_ERR; } #endif goto WRITE_MORE; case MATRIXSSL_APP_DATA: if ((rc = httpBasicParse(&cp, buf, len)) < 0) { closeConn(ssl, fd); if (cp.parsebuf) free(cp.parsebuf); cp.parsebuf = NULL; cp.parsebuflen = 0; return MATRIXSSL_ERROR; } if (rc == HTTPS_COMPLETE) { rc = matrixSslProcessedData(ssl, &buf, (uint32*)&len); closeConn(ssl, fd); if (cp.parsebuf) free(cp.parsebuf); cp.parsebuf = NULL; cp.parsebuflen = 0; if (rc < 0) { return MATRIXSSL_ERROR; } else { if (rc > 0) { _psTrace("HTTP data parsing not supported, ignoring.\n"); } _psTrace("SUCCESS: Received HTTP Response\n"); return MATRIXSSL_SUCCESS; } } /* We processed a partial HTTP message */ if ((rc = matrixSslProcessedData(ssl, &buf, (uint32*)&len)) == 0) { goto READ_MORE; } goto PROCESS_MORE; case MATRIXSSL_REQUEST_SEND: goto WRITE_MORE; case MATRIXSSL_REQUEST_RECV: goto READ_MORE; case MATRIXSSL_RECEIVED_ALERT: /* The first byte of the buffer is the level */ /* The second byte is the description */ if (*buf == SSL_ALERT_LEVEL_FATAL) { psTraceIntInfo("Fatal alert: %d, closing connection.\n", *(buf + 1)); goto L_CLOSE_ERR; } /* Closure alert is normal (and best) way to close */ if (*(buf + 1) == SSL_ALERT_CLOSE_NOTIFY) { closeConn(ssl, fd); if (cp.parsebuf) free(cp.parsebuf); cp.parsebuf = NULL; cp.parsebuflen = 0; return MATRIXSSL_SUCCESS; } psTraceIntInfo("Warning alert: %d\n", *(buf + 1)); if ((rc = matrixSslProcessedData(ssl, &buf, (uint32*)&len)) == 0) { /* No more data in buffer. Might as well read for more. */ goto READ_MORE; } goto PROCESS_MORE; default: /* If rc <= 0 we fall here */ goto L_CLOSE_ERR; } L_CLOSE_ERR: _psTrace("FAIL: No HTTP Response\n"); matrixSslDeleteSession(ssl); close(fd); if (cp.parsebuf) free(cp.parsebuf); cp.parsebuf = NULL; cp.parsebuflen = 0; return MATRIXSSL_ERROR; }
/* Non-blocking socket event handler Wait one time in select for events on any socket This will accept new connections, read and write to sockets that are connected, and close sockets as required. */ static int32 selectLoop(sslKeys_t *keys, SOCKET lfd) { httpConn_t *cp; psTime_t now; DLListEntry connsTmp; DLListEntry *pList; fd_set readfd, writefd; struct timeval timeout; SOCKET fd, maxfd; unsigned char *buf; int32 rc, len, transferred, val; unsigned char rSanity, wSanity, acceptSanity; DLListInit(&connsTmp); rc = PS_SUCCESS; maxfd = INVALID_SOCKET; timeout.tv_sec = SELECT_TIME / 1000; timeout.tv_usec = (SELECT_TIME % 1000) * 1000; FD_ZERO(&readfd); FD_ZERO(&writefd); /* Always set readfd for listening socket */ FD_SET(lfd, &readfd); if (lfd > maxfd) { maxfd = lfd; } /* Check timeouts and set readfd and writefd for connections as required. We use connsTemp so that removal on error from the active iteration list doesn't interfere with list traversal */ psGetTime(&now); while (!DLListIsEmpty(&g_conns)) { pList = DLListGetHead(&g_conns); cp = DLListGetContainer(pList, httpConn_t, List); DLListInsertTail(&connsTmp, &cp->List); /* If timeout != 0 msec ith no new data, close */ if (cp->timeout && (psDiffMsecs(cp->time, now) > (int32)cp->timeout)) { closeConn(cp, PS_TIMEOUT_FAIL); continue; /* Next connection */ } /* Always select for read */ FD_SET(cp->fd, &readfd); /* Select for write if there's pending write data or connection */ if (matrixSslGetOutdata(cp->ssl, NULL) > 0) { FD_SET(cp->fd, &writefd); } /* Housekeeping for maxsock in select call */ if (cp->fd > maxfd) { maxfd = cp->fd; } } /* Use select to check for events on the sockets */ if ((val = select(maxfd + 1, &readfd, &writefd, NULL, &timeout)) <= 0) { /* On error, restore global connections list */ while (!DLListIsEmpty(&connsTmp)) { pList = DLListGetHead(&connsTmp); cp = DLListGetContainer(pList, httpConn_t, List); DLListInsertTail(&g_conns, &cp->List); } /* Select timeout */ if (val == 0) { return PS_TIMEOUT_FAIL; } /* Woke due to interrupt */ if (SOCKET_ERRNO == EINTR) { return PS_TIMEOUT_FAIL; } /* Should attempt to handle more errnos, such as EBADF */ return PS_PLATFORM_FAIL; } /* Check listener for new incoming socket connections */ if (FD_ISSET(lfd, &readfd)) { for (acceptSanity = 0; acceptSanity < ACCEPT_QUEUE; acceptSanity++) { fd = accept(lfd, NULL, NULL); if (fd == INVALID_SOCKET) { break; /* Nothing more to accept; next listener */ } setSocketOptions(fd); cp = malloc(sizeof(httpConn_t)); if ((rc = matrixSslNewServerSession(&cp->ssl, keys, certCb)) < 0) { close(fd); fd = INVALID_SOCKET; continue; } cp->fd = fd; fd = INVALID_SOCKET; cp->timeout = SSL_TIMEOUT; psGetTime(&cp->time); cp->parsebuf = NULL; cp->parsebuflen = 0; DLListInsertTail(&connsTmp, &cp->List); /* Fake that there is read data available, no harm if there isn't */ FD_SET(cp->fd, &readfd); /* _psTraceInt("=== New Client %d ===\n", cp->fd); */ } } /* Check each connection for read/write activity */ while (!DLListIsEmpty(&connsTmp)) { pList = DLListGetHead(&connsTmp); cp = DLListGetContainer(pList, httpConn_t, List); DLListInsertTail(&g_conns, &cp->List); rSanity = wSanity = 0; /* See if there's pending data to send on this connection We could use FD_ISSET, but this is more reliable for the current state of data to send. */ WRITE_MORE: if ((len = matrixSslGetOutdata(cp->ssl, &buf)) > 0) { /* Could get a EWOULDBLOCK since we don't check FD_ISSET */ transferred = send(cp->fd, buf, len, MSG_DONTWAIT); if (transferred <= 0) { #ifdef WIN32 if (SOCKET_ERRNO != EWOULDBLOCK && SOCKET_ERRNO != WSAEWOULDBLOCK) { #else if (SOCKET_ERRNO != EWOULDBLOCK) { #endif closeConn(cp, PS_PLATFORM_FAIL); continue; /* Next connection */ } } else { /* Indicate that we've written > 0 bytes of data */ if ((rc = matrixSslSentData(cp->ssl, transferred)) < 0) { closeConn(cp, PS_ARG_FAIL); continue; /* Next connection */ } if (rc == MATRIXSSL_REQUEST_CLOSE) { closeConn(cp, MATRIXSSL_REQUEST_CLOSE); continue; /* Next connection */ } else if (rc == MATRIXSSL_HANDSHAKE_COMPLETE) { /* If the protocol is server initiated, send data here */ #ifdef ENABLE_FALSE_START /* OR this could be a Chrome browser using FALSE_START and the application data is already waiting in our inbuf for processing */ if ((rc = matrixSslReceivedData(cp->ssl, 0, &buf, (uint32*)&len)) < 0) { closeConn(cp, 0); continue; /* Next connection */ } if (rc > 0) { /* There was leftover data */ goto PROCESS_MORE; } #endif /* ENABLE_FALSE_START */ } /* Update activity time */ psGetTime(&cp->time); /* Try to send again if more data to send */ if (rc == MATRIXSSL_REQUEST_SEND || transferred < len) { if (wSanity++ < GOTO_SANITY) goto WRITE_MORE; } } } else if (len < 0) { closeConn(cp, PS_ARG_FAIL); continue; /* Next connection */ } /* Check the file descriptor returned from select to see if the connection has data to be read */ if (FD_ISSET(cp->fd, &readfd)) { READ_MORE: /* Get the ssl buffer and how much data it can accept */ /* Note 0 is a return failure, unlike with matrixSslGetOutdata */ if ((len = matrixSslGetReadbuf(cp->ssl, &buf)) <= 0) { closeConn(cp, PS_ARG_FAIL); continue; /* Next connection */ } if ((transferred = recv(cp->fd, buf, len, MSG_DONTWAIT)) < 0) { /* We could get EWOULDBLOCK despite the FD_ISSET on goto */ #ifdef WIN32 if (SOCKET_ERRNO != EWOULDBLOCK && SOCKET_ERRNO != WSAEWOULDBLOCK) { #else if (SOCKET_ERRNO != EWOULDBLOCK) { #endif closeConn(cp, PS_PLATFORM_FAIL); } continue; /* Next connection */ } /* If EOF, remote socket closed. This is semi-normal closure. Officially, we should close on closure alert. */ if (transferred == 0) { /* psTraceIntInfo("Closing connection %d on EOF\n", cp->fd); */ closeConn(cp, 0); continue; /* Next connection */ } /* Notify SSL state machine that we've received more data into the ssl buffer retreived with matrixSslGetReadbuf. */ if ((rc = matrixSslReceivedData(cp->ssl, (int32)transferred, &buf, (uint32*)&len)) < 0) { closeConn(cp, 0); continue; /* Next connection */ } /* Update activity time */ psGetTime(&cp->time); PROCESS_MORE: /* Process any incoming plaintext application data */ switch (rc) { case MATRIXSSL_HANDSHAKE_COMPLETE: /* If the protocol is server initiated, send data here */ goto READ_MORE; case MATRIXSSL_APP_DATA: /* Remember, must handle if len == 0! */ if ((rc = httpBasicParse(cp, buf, len)) < 0) { _psTrace("Couldn't parse HTTP data. Closing conn.\n"); closeConn(cp, PS_PROTOCOL_FAIL); continue; /* Next connection */ } if (rc == HTTPS_COMPLETE) { if (httpWriteResponse(cp->ssl) < 0) { closeConn(cp, PS_PROTOCOL_FAIL); continue; /* Next connection */ } /* For HTTP, we assume no pipelined requests, so we close after parsing a single HTTP request */ /* Ignore return of closure alert, it's optional */ matrixSslEncodeClosureAlert(cp->ssl); rc = matrixSslProcessedData(cp->ssl, &buf, (uint32*)&len); if (rc > 0) { /* Additional data is available, but we ignore it */ _psTrace("HTTP data parsing not supported, ignoring.\n"); closeConn(cp, PS_SUCCESS); continue; /* Next connection */ } else if (rc < 0) { closeConn(cp, PS_PROTOCOL_FAIL); continue; /* Next connection */ } /* rc == 0, write out our response and closure alert */ goto WRITE_MORE; } /* We processed a partial HTTP message */ if ((rc = matrixSslProcessedData(cp->ssl, &buf, (uint32*)&len)) == 0) { goto READ_MORE; } goto PROCESS_MORE; case MATRIXSSL_REQUEST_SEND: /* Prevent us from reading again after the write, although that wouldn't be the end of the world */ FD_CLR(cp->fd, &readfd); if (wSanity++ < GOTO_SANITY) goto WRITE_MORE; break; case MATRIXSSL_REQUEST_RECV: if (rSanity++ < GOTO_SANITY) goto READ_MORE; break; case MATRIXSSL_RECEIVED_ALERT: /* The first byte of the buffer is the level */ /* The second byte is the description */ if (*buf == SSL_ALERT_LEVEL_FATAL) { psTraceIntInfo("Fatal alert: %d, closing connection.\n", *(buf + 1)); closeConn(cp, PS_PROTOCOL_FAIL); continue; /* Next connection */ } /* Closure alert is normal (and best) way to close */ if (*(buf + 1) == SSL_ALERT_CLOSE_NOTIFY) { closeConn(cp, PS_SUCCESS); continue; /* Next connection */ } psTraceIntInfo("Warning alert: %d\n", *(buf + 1)); if ((rc = matrixSslProcessedData(cp->ssl, &buf, (uint32*)&len)) == 0) { /* No more data in buffer. Might as well read for more. */ goto READ_MORE; } goto PROCESS_MORE; default: /* If rc <= 0 we fall here */ closeConn(cp, PS_PROTOCOL_FAIL); continue; /* Next connection */ } /* Always try to read more if we processed some data */ if (rSanity++ < GOTO_SANITY) goto READ_MORE; } /* readfd handling */ } /* connection loop */ return PS_SUCCESS; } /******************************************************************************/ /* Create an HTTP response and encode it to the SSL buffer */ #define TEST_SIZE 16000 static int32 httpWriteResponse(ssl_t *cp) { unsigned char *buf; int32 available; if ((available = matrixSslGetWritebuf(cp, &buf, strlen((char *)g_httpResponseHdr) + 1)) < 0) { return PS_MEM_FAIL; } strncpy((char *)buf, (char *)g_httpResponseHdr, available); if (matrixSslEncodeWritebuf(cp, strlen((char *)buf)) < 0) { return PS_MEM_FAIL; } return MATRIXSSL_REQUEST_SEND; } /******************************************************************************/ /* Main non-blocking SSL server Initialize MatrixSSL and sockets layer, and loop on select */ int32 main(int32 argc, char **argv) { sslKeys_t *keys; SOCKET lfd; int32 err, rc; #ifdef WIN32 WSADATA wsaData; WSAStartup(MAKEWORD(1, 1), &wsaData); #endif keys = NULL; DLListInit(&g_conns); g_exitFlag = 0; lfd = INVALID_SOCKET; #ifdef POSIX if (sighandlers() < 0) { return PS_PLATFORM_FAIL; } #endif /* POSIX */ if ((rc = matrixSslOpen()) < 0) { _psTrace("MatrixSSL library init failure. Exiting\n"); return rc; } if (matrixSslNewKeys(&keys) < 0) { _psTrace("MatrixSSL library key init failure. Exiting\n"); return -1; } #ifdef USE_HEADER_KEYS /* In-memory based keys */ if ((rc = matrixSslLoadRsaKeysMem(keys, certSrvBuf, sizeof(certSrvBuf), privkeySrvBuf, sizeof(privkeySrvBuf), NULL, 0)) < 0) { _psTrace("No certificate material loaded. Exiting\n"); matrixSslDeleteKeys(keys); matrixSslClose(); return rc; } #else /* USE_HEADER_KEYS */ /* File based keys */ if ((rc = matrixSslLoadRsaKeys(keys, certSrvFile, privkeySrvFile, NULL, NULL)) < 0) { _psTrace("No certificate material loaded. Exiting\n"); matrixSslDeleteKeys(keys); matrixSslClose(); return rc; } #endif /* USE_HEADER_KEYS */ /* Create the listening socket that will accept incoming connections */ if ((lfd = socketListen(HTTPS_PORT, &err)) == INVALID_SOCKET) { _psTraceInt("Can't listen on port %d\n", HTTPS_PORT); goto L_EXIT; } /* Main select loop to handle sockets events */ while (!g_exitFlag) { selectLoop(keys, lfd); } L_EXIT: if (lfd != INVALID_SOCKET) close(lfd); if (keys) matrixSslDeleteKeys(keys); matrixSslClose(); return 0; }
/* Non-blocking socket event handler Wait one time in select for events on any socket This will accept new connections, read and write to sockets that are connected, and close sockets as required. */ static int32 selectLoop(sslKeys_t *keys, SOCKET lfd) { httpConn_t *cp; psTime_t now; DLListEntry connsTmp; DLListEntry *pList; fd_set readfd, writefd; struct timeval timeout; SOCKET fd, maxfd; unsigned char *buf; int32 rc, len, transferred, val; unsigned char rSanity, wSanity, acceptSanity; sslSessOpts_t options; DLListInit(&connsTmp); rc = PS_SUCCESS; maxfd = INVALID_SOCKET; timeout.tv_sec = SELECT_TIME / 1000; timeout.tv_usec = (SELECT_TIME % 1000) * 1000; FD_ZERO(&readfd); FD_ZERO(&writefd); /* Always set readfd for listening socket */ FD_SET(lfd, &readfd); if (lfd > maxfd) { maxfd = lfd; } /* Check timeouts and set readfd and writefd for connections as required. We use connsTemp so that removal on error from the active iteration list doesn't interfere with list traversal */ psGetTime(&now, NULL); while (!DLListIsEmpty(&g_conns)) { pList = DLListGetHead(&g_conns); cp = DLListGetContainer(pList, httpConn_t, List); DLListInsertTail(&connsTmp, &cp->List); /* If timeout != 0 msec ith no new data, close */ if (cp->timeout && (psDiffMsecs(cp->time, now, NULL) > (int32)cp->timeout)) { closeConn(cp, PS_TIMEOUT_FAIL); continue; /* Next connection */ } /* Always select for read */ FD_SET(cp->fd, &readfd); /* Select for write if there's pending write data or connection */ if (matrixSslGetOutdata(cp->ssl, NULL) > 0) { FD_SET(cp->fd, &writefd); } /* Housekeeping for maxsock in select call */ if (cp->fd > maxfd) { maxfd = cp->fd; } } /* Use select to check for events on the sockets */ if ((val = select(maxfd + 1, &readfd, &writefd, NULL, &timeout)) <= 0) { /* On error, restore global connections list */ while (!DLListIsEmpty(&connsTmp)) { pList = DLListGetHead(&connsTmp); cp = DLListGetContainer(pList, httpConn_t, List); DLListInsertTail(&g_conns, &cp->List); } /* Select timeout */ if (val == 0) { return PS_TIMEOUT_FAIL; } /* Woke due to interrupt */ if (SOCKET_ERRNO == EINTR) { return PS_TIMEOUT_FAIL; } /* Should attempt to handle more errnos, such as EBADF */ return PS_PLATFORM_FAIL; } /* Check listener for new incoming socket connections */ if (FD_ISSET(lfd, &readfd)) { for (acceptSanity = 0; acceptSanity < ACCEPT_QUEUE; acceptSanity++) { fd = accept(lfd, NULL, NULL); if (fd == INVALID_SOCKET) { break; /* Nothing more to accept; next listener */ } setSocketOptions(fd); cp = malloc(sizeof(httpConn_t)); memset(cp, 0x0, sizeof(httpConn_t)); memset(&options, 0x0, sizeof(sslSessOpts_t)); options.versionFlag = g_proto; options.userPtr = keys; /* Just a test */ //options.truncHmac = -1; //options.maxFragLen = -1; //options.ecFlags |= SSL_OPT_SECP521R1; //options.ecFlags |= SSL_OPT_SECP224R1; //options.ecFlags |= SSL_OPT_SECP384R1; if ((rc = matrixSslNewServerSession(&cp->ssl, keys, certCb, &options)) < 0) { close(fd); fd = INVALID_SOCKET; continue; } #ifdef USE_SERVER_NAME_INDICATION /* Register extension callbacks to manage client connection opts */ matrixSslRegisterSNICallback(cp->ssl, SNI_callback); #endif #ifdef USE_ALPN matrixSslRegisterALPNCallback(cp->ssl, ALPN_callback); #endif cp->fd = fd; fd = INVALID_SOCKET; cp->timeout = SSL_TIMEOUT; psGetTime(&cp->time, NULL); cp->parsebuf = NULL; cp->parsebuflen = 0; DLListInsertTail(&connsTmp, &cp->List); /* Fake that there is read data available, no harm if there isn't */ FD_SET(cp->fd, &readfd); /* _psTraceInt("=== New Client %d ===\n", cp->fd); */ } } /* Check each connection for read/write activity */ while (!DLListIsEmpty(&connsTmp)) { pList = DLListGetHead(&connsTmp); cp = DLListGetContainer(pList, httpConn_t, List); DLListInsertTail(&g_conns, &cp->List); rSanity = wSanity = 0; /* See if there's pending data to send on this connection We could use FD_ISSET, but this is more reliable for the current state of data to send. */ WRITE_MORE: if ((len = matrixSslGetOutdata(cp->ssl, &buf)) > 0) { /* Could get a EWOULDBLOCK since we don't check FD_ISSET */ transferred = send(cp->fd, buf, len, MSG_DONTWAIT); if (transferred <= 0) { #ifdef WIN32 if (SOCKET_ERRNO != EWOULDBLOCK && SOCKET_ERRNO != WSAEWOULDBLOCK) { #else if (SOCKET_ERRNO != EWOULDBLOCK) { #endif closeConn(cp, PS_PLATFORM_FAIL); continue; /* Next connection */ } } else { /* Indicate that we've written > 0 bytes of data */ if ((rc = matrixSslSentData(cp->ssl, transferred)) < 0) { closeConn(cp, PS_ARG_FAIL); continue; /* Next connection */ } if (rc == MATRIXSSL_REQUEST_CLOSE) { closeConn(cp, MATRIXSSL_REQUEST_CLOSE); continue; /* Next connection */ } else if (rc == MATRIXSSL_HANDSHAKE_COMPLETE) { /* If the protocol is server initiated, send data here */ #ifdef ENABLE_FALSE_START /* OR this could be a Chrome browser using FALSE_START and the application data is already waiting in our inbuf for processing */ if ((rc = matrixSslReceivedData(cp->ssl, 0, &buf, (uint32*)&len)) < 0) { closeConn(cp, 0); continue; /* Next connection */ } if (rc > 0) { /* There was leftover data */ goto PROCESS_MORE; } #endif /* ENABLE_FALSE_START */ } /* Update activity time */ psGetTime(&cp->time, NULL); /* Try to send again if more data to send */ if (rc == MATRIXSSL_REQUEST_SEND || transferred < len) { if (wSanity++ < GOTO_SANITY) goto WRITE_MORE; } } } else if (len < 0) { closeConn(cp, PS_ARG_FAIL); continue; /* Next connection */ } /* Check the file descriptor returned from select to see if the connection has data to be read */ if (FD_ISSET(cp->fd, &readfd)) { READ_MORE: /* Get the ssl buffer and how much data it can accept */ /* Note 0 is a return failure, unlike with matrixSslGetOutdata */ if ((len = matrixSslGetReadbuf(cp->ssl, &buf)) <= 0) { closeConn(cp, PS_ARG_FAIL); continue; /* Next connection */ } if ((transferred = recv(cp->fd, buf, len, MSG_DONTWAIT)) < 0) { /* We could get EWOULDBLOCK despite the FD_ISSET on goto */ #ifdef WIN32 if (SOCKET_ERRNO != EWOULDBLOCK && SOCKET_ERRNO != WSAEWOULDBLOCK) { #else if (SOCKET_ERRNO != EWOULDBLOCK) { #endif closeConn(cp, PS_PLATFORM_FAIL); } continue; /* Next connection */ } /* If EOF, remote socket closed. This is semi-normal closure. Officially, we should close on closure alert. */ if (transferred == 0) { /* psTraceIntInfo("Closing connection %d on EOF\n", cp->fd); */ closeConn(cp, 0); continue; /* Next connection */ } /* Notify SSL state machine that we've received more data into the ssl buffer retreived with matrixSslGetReadbuf. */ if ((rc = matrixSslReceivedData(cp->ssl, (int32)transferred, &buf, (uint32*)&len)) < 0) { closeConn(cp, 0); continue; /* Next connection */ } /* Update activity time */ psGetTime(&cp->time, NULL); PROCESS_MORE: /* Process any incoming plaintext application data */ switch (rc) { case MATRIXSSL_HANDSHAKE_COMPLETE: /* If the protocol is server initiated, send data here */ goto READ_MORE; case MATRIXSSL_APP_DATA: case MATRIXSSL_APP_DATA_COMPRESSED: //psTraceBytes("DATA", buf, len); /* Remember, must handle if len == 0! */ if ((rc = httpBasicParse(cp, buf, len, 0)) < 0) { _psTrace("Couldn't parse HTTP data. Closing conn.\n"); closeConn(cp, PS_PROTOCOL_FAIL); continue; /* Next connection */ } if (cp->parsebuf != NULL) { /* Test for one of our custom testing messages */ if (strncmp((const char*)cp->parsebuf, "MATRIX_SHUTDOWN", 15) == 0) { g_exitFlag = 1; matrixSslEncodeClosureAlert(cp->ssl); _psTrace("Got MATRIX_SHUTDOWN. Exiting\n"); goto WRITE_MORE; } } /* reply to /bytes?<byte count> syntax */ if (len > 11 && strncmp((char *)buf, "GET /bytes?", 11) == 0) { cp->bytes_requested = atoi((char *)buf + 11); if (cp->bytes_requested < strlen((char *)g_httpResponseHdr) || cp->bytes_requested > 1073741824) { cp->bytes_requested = strlen((char *)g_httpResponseHdr); } cp->bytes_sent = 0; } if (rc == HTTPS_COMPLETE) { if (httpWriteResponse(cp) < 0) { closeConn(cp, PS_PROTOCOL_FAIL); continue; /* Next connection */ } /* For HTTP, we assume no pipelined requests, so we close after parsing a single HTTP request */ /* Ignore return of closure alert, it's optional */ matrixSslEncodeClosureAlert(cp->ssl); rc = matrixSslProcessedData(cp->ssl, &buf, (uint32*)&len); if (rc > 0) { /* Additional data is available, but we ignore it */ _psTrace("HTTP data parsing not supported, ignoring.\n"); closeConn(cp, PS_SUCCESS); continue; /* Next connection */ } else if (rc < 0) { closeConn(cp, PS_PROTOCOL_FAIL); continue; /* Next connection */ } /* rc == 0, write out our response and closure alert */ goto WRITE_MORE; } /* We processed a partial HTTP message */ if ((rc = matrixSslProcessedData(cp->ssl, &buf, (uint32*)&len)) == 0) { goto READ_MORE; } goto PROCESS_MORE; case MATRIXSSL_REQUEST_SEND: /* Prevent us from reading again after the write, although that wouldn't be the end of the world */ FD_CLR(cp->fd, &readfd); if (wSanity++ < GOTO_SANITY) goto WRITE_MORE; break; case MATRIXSSL_REQUEST_RECV: if (rSanity++ < GOTO_SANITY) goto READ_MORE; break; case MATRIXSSL_RECEIVED_ALERT: /* The first byte of the buffer is the level */ /* The second byte is the description */ if (*buf == SSL_ALERT_LEVEL_FATAL) { psTraceIntInfo("Fatal alert: %d, closing connection.\n", *(buf + 1)); closeConn(cp, PS_PROTOCOL_FAIL); continue; /* Next connection */ } /* Closure alert is normal (and best) way to close */ if (*(buf + 1) == SSL_ALERT_CLOSE_NOTIFY) { closeConn(cp, PS_SUCCESS); continue; /* Next connection */ } psTraceIntInfo("Warning alert: %d\n", *(buf + 1)); if ((rc = matrixSslProcessedData(cp->ssl, &buf, (uint32*)&len)) == 0) { /* No more data in buffer. Might as well read for more. */ goto READ_MORE; } goto PROCESS_MORE; default: /* If rc <= 0 we fall here */ closeConn(cp, PS_PROTOCOL_FAIL); continue; /* Next connection */ } /* Always try to read more if we processed some data */ if (rSanity++ < GOTO_SANITY) goto READ_MORE; } /* readfd handling */ } /* connection loop */ return PS_SUCCESS; } /******************************************************************************/ /* Create an HTTP response and encode it to the SSL buffer */ #define TEST_SIZE 16000 static int32 httpWriteResponse(httpConn_t *conn) { unsigned char *buf; ssl_t *cp; int32 available, len, rc; cp = conn->ssl; if (conn->bytes_requested) { /* The /bytes? syntax */ while (conn->bytes_sent < conn->bytes_requested) { len = conn->bytes_requested - conn->bytes_sent; if (len > RESPONSE_REC_LEN) { len = RESPONSE_REC_LEN; } psAssert(len > 0); rc = matrixSslGetWritebuf(cp, &buf, len); if (rc < len) { len = rc; /* could have been shortened due to max_frag */ } memset(buf, 'J', len); if (conn->bytes_sent == 0) { /* Overwrite first N bytes with HTTP header the first time */ strncpy((char *)buf, (char *)g_httpResponseHdr, strlen((char*)g_httpResponseHdr)); } if ((rc = matrixSslEncodeWritebuf(cp, len)) < 0) { printf("couldn't encode data %d\n", rc); } conn->bytes_sent += len; } return MATRIXSSL_REQUEST_SEND; } /* Usual reply */ if ((available = matrixSslGetWritebuf(cp, &buf, (uint32)strlen((char *)g_httpResponseHdr) + 1)) < 0) { return PS_MEM_FAIL; } strncpy((char *)buf, (char *)g_httpResponseHdr, available); //psTraceBytes("Replying", buf, (uint32)strlen((char *)buf)); if (matrixSslEncodeWritebuf(cp, (uint32)strlen((char *)buf)) < 0) { return PS_MEM_FAIL; } return MATRIXSSL_REQUEST_SEND; } /******************************************************************************/ /* Main non-blocking SSL server Initialize MatrixSSL and sockets layer, and loop on select */ int32 main(int32 argc, char **argv) { sslKeys_t *keys; SOCKET lfd; unsigned char *CAstream; int32 err, rc, CAstreamLen; #ifdef USE_STATELESS_SESSION_TICKETS unsigned char randKey[16]; #endif #ifdef WIN32 WSADATA wsaData; WSAStartup(MAKEWORD(1, 1), &wsaData); #endif keys = NULL; DLListInit(&g_conns); g_exitFlag = 0; lfd = INVALID_SOCKET; #ifdef POSIX if (sighandlers() < 0) { return PS_PLATFORM_FAIL; } #endif /* POSIX */ if ((rc = matrixSslOpen()) < 0) { _psTrace("MatrixSSL library init failure. Exiting\n"); return rc; } if (matrixSslNewKeys(&keys, NULL) < 0) { _psTrace("MatrixSSL library key init failure. Exiting\n"); return -1; } #ifdef USE_STATELESS_SESSION_TICKETS matrixSslSetSessionTicketCallback(keys, sessTicketCb); psGetEntropy(randKey, 16, NULL); if (matrixSslLoadSessionTicketKeys(keys, randKey, sessTicketSymKey, 32, sessTicketMacKey, 32) < 0) { _psTrace("Error loading session ticket encryption key\n"); } #endif #ifdef USE_HEADER_KEYS /* In-memory based keys Build the CA list first for potential client auth usage */ CAstreamLen = 0; #ifdef USE_RSA CAstreamLen += sizeof(RSACAS); #ifdef USE_ECC CAstreamLen += sizeof(ECDHRSACAS); #endif #endif #ifdef USE_ECC CAstreamLen += sizeof(ECCAS); #endif CAstream = psMalloc(NULL, CAstreamLen); CAstreamLen = 0; #ifdef USE_RSA memcpy(CAstream, RSACAS, sizeof(RSACAS)); CAstreamLen += sizeof(RSACAS); #ifdef USE_ECC memcpy(CAstream + CAstreamLen, ECDHRSACAS, sizeof(ECDHRSACAS)); CAstreamLen += sizeof(ECDHRSACAS); #endif #endif #ifdef USE_ECC memcpy(CAstream + CAstreamLen, ECCAS, sizeof(ECCAS)); CAstreamLen += sizeof(ECCAS); #endif #ifdef EXAMPLE_RSA_KEYS if ((rc = matrixSslLoadRsaKeysMem(keys, RSA1024, sizeof(RSA1024), RSA1024KEY, sizeof(RSA1024KEY), CAstream, CAstreamLen)) < 0) { _psTrace("No certificate material loaded. Exiting\n"); psFree(CAstream, NULL); matrixSslDeleteKeys(keys); matrixSslClose(); return rc; } #endif #ifdef EXAMPLE_ECDH_RSA_KEYS if ((rc = matrixSslLoadEcKeysMem(keys, ECDHRSA256, sizeof(ECDHRSA256), ECDHRSA256KEY, sizeof(ECDHRSA256KEY), CAstream, CAstreamLen)) < 0) { _psTrace("No certificate material loaded. Exiting\n"); psFree(CAstream, NULL); matrixSslDeleteKeys(keys); matrixSslClose(); return rc; } #endif #ifdef EXAMPLE_EC_KEYS if ((rc = matrixSslLoadEcKeysMem(keys, EC521, sizeof(EC521), EC521KEY, sizeof(EC521KEY), CAstream, CAstreamLen)) < 0) { // if ((rc = matrixSslLoadEcKeysMem(keys, EC256, sizeof(EC256), // EC256KEY, sizeof(EC256KEY), CAstream, CAstreamLen)) < 0) { // if ((rc = matrixSslLoadEcKeysMem(keys, EC192, sizeof(EC192), // EC192KEY, sizeof(EC192KEY), CAstream, CAstreamLen)) < 0) { _psTrace("No certificate material loaded. Exiting\n"); psFree(CAstream, NULL); matrixSslDeleteKeys(keys); matrixSslClose(); return rc; } #endif #ifdef REQUIRE_DH_PARAMS if (matrixSslLoadDhParamsMem(keys, dhParamBuf1024, sizeof(dhParamBuf1024)) < 0){ _psTrace("Unable to load DH parameters\n"); } #endif /* DH_PARAMS */ psFree(CAstream, NULL); #else /* USE_HEADER_KEYS */ /* File based keys Build the CA list first for potential client auth usage */ CAstreamLen = 0; #ifdef USE_RSA CAstreamLen += (int32)strlen(rsaCAFile) + 1; #ifdef USE_ECC CAstreamLen += (int32)strlen(ecdhRsaCAFile) + 1; #endif #endif #ifdef USE_ECC CAstreamLen += (int32)strlen(ecCAFile) + 1; #endif CAstream = psMalloc(NULL, CAstreamLen); memset(CAstream, 0x0, CAstreamLen); CAstreamLen = 0; #ifdef USE_RSA memcpy(CAstream, rsaCAFile, strlen(rsaCAFile)); CAstreamLen += strlen(rsaCAFile); #ifdef USE_ECC memcpy(CAstream + CAstreamLen, ";", 1); CAstreamLen++; memcpy(CAstream + CAstreamLen, ecdhRsaCAFile, strlen(ecdhRsaCAFile)); CAstreamLen += strlen(ecdhRsaCAFile); #endif #endif #ifdef USE_ECC if (CAstreamLen > 0) { memcpy(CAstream + CAstreamLen, ";", 1); CAstreamLen++; } memcpy(CAstream + CAstreamLen, ecCAFile, strlen(ecCAFile)); #endif /* Load Identiy */ #ifdef EXAMPLE_RSA_KEYS if ((rc = matrixSslLoadRsaKeys(keys, rsaCertFile, rsaPrivkeyFile, NULL, (char*)CAstream)) < 0) { _psTrace("No certificate material loaded. Exiting\n"); psFree(CAstream, NULL); matrixSslDeleteKeys(keys); matrixSslClose(); return rc; } #endif #ifdef EXAMPLE_ECDH_RSA_KEYS if ((rc = matrixSslLoadEcKeys(keys, ecdhRsaCertFile, ecdhRsaPrivkeyFile, NULL, (char*)CAstream)) < 0) { _psTrace("No certificate material loaded. Exiting\n"); psFree(CAstream, NULL); matrixSslDeleteKeys(keys); matrixSslClose(); return rc; } #endif #ifdef EXAMPLE_EC_KEYS if ((rc = matrixSslLoadEcKeys(keys, ecCertFile, ecPrivkeyFile, NULL, (char*)CAstream)) < 0) { _psTrace("No certificate material loaded. Exiting\n"); psFree(CAstream, NULL); matrixSslDeleteKeys(keys); matrixSslClose(); return rc; } #endif #ifdef REQUIRE_DH_PARAMS if (matrixSslLoadDhParams(keys, dhParamFile) < 0){ _psTrace("Unable to load DH parameters\n"); } #endif psFree(CAstream, NULL); #endif /* USE_HEADER_KEYS */ #ifdef USE_PSK_CIPHER_SUITE /* The first one supports the 15-byte openssl PSK ID */ matrixSslLoadPsk(keys, pskTable[0].key, sizeof(pskTable[0].key), pskTable[rc].id, 15); for (rc = 0; rc < 8; rc++) { matrixSslLoadPsk(keys, pskTable[rc].key, sizeof(pskTable[rc].key), pskTable[rc].id, sizeof(pskTable[rc].id)); } #endif /* PSK */ if (argc == 2) { switch (atoi(argv[1])) { case 0: g_proto = SSL_FLAGS_SSLV3; break; case 1: g_proto = SSL_FLAGS_TLS_1_0; break; case 2: g_proto = SSL_FLAGS_TLS_1_1; break; case 3: g_proto = SSL_FLAGS_TLS_1_2; break; default: g_proto = SSL_FLAGS_TLS_1_0; break; } } else { g_proto = 0; } /* Create the listening socket that will accept incoming connections */ if ((lfd = socketListen(HTTPS_PORT, &err)) == INVALID_SOCKET) { _psTraceInt("Can't listen on port %d\n", HTTPS_PORT); goto L_EXIT; } /* Main select loop to handle sockets events */ while (!g_exitFlag) { selectLoop(keys, lfd); } L_EXIT: if (lfd != INVALID_SOCKET) close(lfd); if (keys) matrixSslDeleteKeys(keys); matrixSslClose(); return 0; }