/****************************************************************************** * NETCON_send * Basically calls 'send()' unless we should use SSL * number of chars send is put in *sent */ DWORD NETCON_send(netconn_t *connection, const void *msg, size_t len, int flags, int *sent /* out */) { /* send is always blocking. */ set_socket_blocking(connection, TRUE); if(!connection->secure) { *sent = sock_send(connection->socket, msg, len, flags); return *sent == -1 ? WSAGetLastError() : ERROR_SUCCESS; } else { const BYTE *ptr = msg; size_t chunk_size; *sent = 0; while(len) { chunk_size = min(len, connection->ssl_sizes.cbMaximumMessage); if(!send_ssl_chunk(connection, ptr, chunk_size)) return ERROR_INTERNET_SECURITY_CHANNEL_ERROR; *sent += chunk_size; ptr += chunk_size; len -= chunk_size; } return ERROR_SUCCESS; } }
BOOL NETCON_is_alive(netconn_t *netconn) { int len; char b; set_socket_blocking(netconn, FALSE); len = sock_recv(netconn->socket, &b, 1, MSG_PEEK); return len == 1 || (len == -1 && WSAGetLastError() == WSAEWOULDBLOCK); }
static inline int connect_server_socket(const char* name) { int s = socket(AF_LOCAL, SOCK_STREAM, 0); set_socket_blocking(s, TRUE); if(socket_local_client_connect(s, name, ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM) >= 0) { APPL_TRACE_DEBUG2("connected to local socket:%s, fd:%d", name, s); return s; } else APPL_TRACE_ERROR3("connect to local socket:%s, fd:%d failed, errno:%d", name, s, errno); close(s); return -1; }
/****************************************************************************** * NETCON_recv * Basically calls 'recv()' unless we should use SSL * number of chars received is put in *recvd */ DWORD NETCON_recv(netconn_t *connection, void *buf, size_t len, BOOL blocking, int *recvd) { *recvd = 0; if (!len) return ERROR_SUCCESS; if (!connection->secure) { set_socket_blocking(connection, blocking); *recvd = sock_recv(connection->socket, buf, len, 0); return *recvd == -1 ? WSAGetLastError() : ERROR_SUCCESS; } else { SIZE_T size = 0; BOOL eof; DWORD res; if(connection->peek_msg) { size = min(len, connection->peek_len); memcpy(buf, connection->peek_msg, size); connection->peek_len -= size; connection->peek_msg += size; if(!connection->peek_len) { heap_free(connection->peek_msg_mem); connection->peek_msg_mem = connection->peek_msg = NULL; } *recvd = size; return ERROR_SUCCESS; } do { res = read_ssl_chunk(connection, (BYTE*)buf, len, blocking, &size, &eof); if(res != ERROR_SUCCESS) { if(res == WSAEWOULDBLOCK) { if(size) res = ERROR_SUCCESS; }else { WARN("read_ssl_chunk failed\n"); } break; } }while(!size && !eof); TRACE("received %ld bytes\n", size); *recvd = size; return res; } }
static DWORD create_netconn_socket(server_t *server, netconn_t *netconn, DWORD timeout) { int result; ULONG flag; DWORD res; init_winsock(); assert(server->addr_len); result = netconn->socket = socket(server->addr.ss_family, SOCK_STREAM, 0); if(result != -1) { set_socket_blocking(netconn, FALSE); result = connect(netconn->socket, (struct sockaddr*)&server->addr, server->addr_len); if(result == -1) { res = WSAGetLastError(); if (res == WSAEINPROGRESS || res == WSAEWOULDBLOCK) { FD_SET set; int res; socklen_t len = sizeof(res); TIMEVAL timeout_timeval = {0, timeout*1000}; FD_ZERO(&set); FD_SET(netconn->socket, &set); res = select(netconn->socket+1, NULL, &set, NULL, &timeout_timeval); if(!res || res == SOCKET_ERROR) { closesocket(netconn->socket); netconn->socket = -1; return ERROR_INTERNET_CANNOT_CONNECT; } if (!getsockopt(netconn->socket, SOL_SOCKET, SO_ERROR, (void *)&res, &len) && !res) result = 0; } } if(result == -1) { closesocket(netconn->socket); netconn->socket = -1; } } if(result == -1) return ERROR_INTERNET_CANNOT_CONNECT; flag = 1; result = setsockopt(netconn->socket, IPPROTO_TCP, TCP_NODELAY, (void*)&flag, sizeof(flag)); if(result < 0) WARN("setsockopt(TCP_NODELAY) failed\n"); return ERROR_SUCCESS; }
/****************************************************************************** * NETCON_recv * Basically calls 'recv()' unless we should use SSL * number of chars received is put in *recvd */ DWORD NETCON_recv(netconn_t *connection, void *buf, size_t len, blocking_mode_t mode, int *recvd) { *recvd = 0; if (!len) return ERROR_SUCCESS; if (!connection->secure) { int flags = 0; switch(mode) { case BLOCKING_ALLOW: break; case BLOCKING_DISALLOW: flags = WINE_MSG_DONTWAIT; break; case BLOCKING_WAITALL: flags = MSG_WAITALL; break; } set_socket_blocking(connection->socket, mode); *recvd = sock_recv(connection->socket, buf, len, flags); return *recvd == -1 ? sock_get_error(errno) : ERROR_SUCCESS; } else { SIZE_T size = 0, cread; BOOL eof; DWORD res; if(connection->peek_msg) { size = min(len, connection->peek_len); memcpy(buf, connection->peek_msg, size); connection->peek_len -= size; connection->peek_msg += size; if(!connection->peek_len) { heap_free(connection->peek_msg_mem); connection->peek_msg_mem = connection->peek_msg = NULL; } /* check if we have enough data from the peek buffer */ if(mode != BLOCKING_WAITALL || size == len) { *recvd = size; return ERROR_SUCCESS; } mode = BLOCKING_DISALLOW; } do { res = read_ssl_chunk(connection, (BYTE*)buf+size, len-size, mode, &cread, &eof); if(res != ERROR_SUCCESS) { if(res == WSAEWOULDBLOCK) { if(size) res = ERROR_SUCCESS; }else { WARN("read_ssl_chunk failed\n"); } break; } if(eof) { TRACE("EOF\n"); break; } size += cread; }while(!size || (mode == BLOCKING_WAITALL && size < len)); TRACE("received %zd bytes\n", size); *recvd = size; return res; } }
static BOOL read_ssl_chunk(netconn_t *conn, void *buf, SIZE_T buf_size, blocking_mode_t mode, SIZE_T *ret_size, BOOL *eof) { const SIZE_T ssl_buf_size = conn->ssl_sizes.cbHeader+conn->ssl_sizes.cbMaximumMessage+conn->ssl_sizes.cbTrailer; SecBuffer bufs[4]; SecBufferDesc buf_desc = {SECBUFFER_VERSION, sizeof(bufs)/sizeof(*bufs), bufs}; SSIZE_T size, buf_len = 0; blocking_mode_t tmp_mode; int i; SECURITY_STATUS res; assert(conn->extra_len < ssl_buf_size); /* BLOCKING_WAITALL is handled by caller */ if(mode == BLOCKING_WAITALL) mode = BLOCKING_ALLOW; if(conn->extra_len) { memcpy(conn->ssl_buf, conn->extra_buf, conn->extra_len); buf_len = conn->extra_len; conn->extra_len = 0; heap_free(conn->extra_buf); conn->extra_buf = NULL; } tmp_mode = buf_len ? BLOCKING_DISALLOW : mode; set_socket_blocking(conn->socket, tmp_mode); size = sock_recv(conn->socket, conn->ssl_buf+buf_len, ssl_buf_size-buf_len, tmp_mode == BLOCKING_ALLOW ? 0 : WINE_MSG_DONTWAIT); if(size < 0) { if(!buf_len) { if(errno == EAGAIN || errno == EWOULDBLOCK) { TRACE("would block\n"); return WSAEWOULDBLOCK; } WARN("recv failed\n"); return ERROR_INTERNET_CONNECTION_ABORTED; } }else { buf_len += size; } *ret_size = buf_len; if(!buf_len) { *eof = TRUE; return ERROR_SUCCESS; } *eof = FALSE; do { memset(bufs, 0, sizeof(bufs)); bufs[0].BufferType = SECBUFFER_DATA; bufs[0].cbBuffer = buf_len; bufs[0].pvBuffer = conn->ssl_buf; res = DecryptMessage(&conn->ssl_ctx, &buf_desc, 0, NULL); switch(res) { case SEC_E_OK: break; case SEC_I_CONTEXT_EXPIRED: TRACE("context expired\n"); *eof = TRUE; return ERROR_SUCCESS; case SEC_E_INCOMPLETE_MESSAGE: assert(buf_len < ssl_buf_size); set_socket_blocking(conn->socket, mode); size = sock_recv(conn->socket, conn->ssl_buf+buf_len, ssl_buf_size-buf_len, mode == BLOCKING_ALLOW ? 0 : WINE_MSG_DONTWAIT); if(size < 1) { if(size < 0 && (errno == EAGAIN || errno == EWOULDBLOCK)) { TRACE("would block\n"); /* FIXME: Optimize extra_buf usage. */ conn->extra_buf = heap_alloc(buf_len); if(!conn->extra_buf) return ERROR_NOT_ENOUGH_MEMORY; conn->extra_len = buf_len; memcpy(conn->extra_buf, conn->ssl_buf, conn->extra_len); return WSAEWOULDBLOCK; } return ERROR_INTERNET_CONNECTION_ABORTED; } buf_len += size; continue; default: WARN("failed: %08x\n", res); return ERROR_INTERNET_CONNECTION_ABORTED; } } while(res != SEC_E_OK); for(i=0; i < sizeof(bufs)/sizeof(*bufs); i++) { if(bufs[i].BufferType == SECBUFFER_DATA) { size = min(buf_size, bufs[i].cbBuffer); memcpy(buf, bufs[i].pvBuffer, size); if(size < bufs[i].cbBuffer) { assert(!conn->peek_len); conn->peek_msg_mem = conn->peek_msg = heap_alloc(bufs[i].cbBuffer - size); if(!conn->peek_msg) return ERROR_NOT_ENOUGH_MEMORY; conn->peek_len = bufs[i].cbBuffer-size; memcpy(conn->peek_msg, (char*)bufs[i].pvBuffer+size, conn->peek_len); } *ret_size = size; } } for(i=0; i < sizeof(bufs)/sizeof(*bufs); i++) { if(bufs[i].BufferType == SECBUFFER_EXTRA) { conn->extra_buf = heap_alloc(bufs[i].cbBuffer); if(!conn->extra_buf) return ERROR_NOT_ENOUGH_MEMORY; conn->extra_len = bufs[i].cbBuffer; memcpy(conn->extra_buf, bufs[i].pvBuffer, conn->extra_len); } } return ERROR_SUCCESS; }
inline void set_socket_blocking( SocketPtr const &s ) { set_socket_blocking( s->fd() ); }
inline void set_socket_blocking( Socket const &s ) { set_socket_blocking( s.fd() ); }
static DWORD netcon_secure_connect_setup(netconn_t *connection, BOOL compat_mode) { SecBuffer out_buf = {0, SECBUFFER_TOKEN, NULL}, in_bufs[2] = {{0, SECBUFFER_TOKEN}, {0, SECBUFFER_EMPTY}}; SecBufferDesc out_desc = {SECBUFFER_VERSION, 1, &out_buf}, in_desc = {SECBUFFER_VERSION, 2, in_bufs}; SecHandle *cred = &cred_handle; BYTE *read_buf; SIZE_T read_buf_size = 2048; ULONG attrs = 0; CtxtHandle ctx; SSIZE_T size; int bits; const CERT_CONTEXT *cert; SECURITY_STATUS status; DWORD res = ERROR_SUCCESS; const DWORD isc_req_flags = ISC_REQ_ALLOCATE_MEMORY|ISC_REQ_USE_SESSION_KEY|ISC_REQ_CONFIDENTIALITY |ISC_REQ_SEQUENCE_DETECT|ISC_REQ_REPLAY_DETECT|ISC_REQ_MANUAL_CRED_VALIDATION; if(!ensure_cred_handle()) return ERROR_INTERNET_SECURITY_CHANNEL_ERROR; if(compat_mode) { if(!have_compat_cred_handle) return ERROR_INTERNET_SECURITY_CHANNEL_ERROR; cred = &compat_cred_handle; } read_buf = heap_alloc(read_buf_size); if(!read_buf) return ERROR_OUTOFMEMORY; status = InitializeSecurityContextW(cred, NULL, connection->server->name, isc_req_flags, 0, 0, NULL, 0, &ctx, &out_desc, &attrs, NULL); assert(status != SEC_E_OK); set_socket_blocking(connection, TRUE); while(status == SEC_I_CONTINUE_NEEDED || status == SEC_E_INCOMPLETE_MESSAGE) { if(out_buf.cbBuffer) { assert(status == SEC_I_CONTINUE_NEEDED); TRACE("sending %u bytes\n", out_buf.cbBuffer); size = sock_send(connection->socket, out_buf.pvBuffer, out_buf.cbBuffer, 0); if(size != out_buf.cbBuffer) { ERR("send failed\n"); status = ERROR_INTERNET_SECURITY_CHANNEL_ERROR; break; } FreeContextBuffer(out_buf.pvBuffer); out_buf.pvBuffer = NULL; out_buf.cbBuffer = 0; } if(status == SEC_I_CONTINUE_NEEDED) { assert(in_bufs[1].cbBuffer < read_buf_size); memmove(read_buf, (BYTE*)in_bufs[0].pvBuffer+in_bufs[0].cbBuffer-in_bufs[1].cbBuffer, in_bufs[1].cbBuffer); in_bufs[0].cbBuffer = in_bufs[1].cbBuffer; in_bufs[1].BufferType = SECBUFFER_EMPTY; in_bufs[1].cbBuffer = 0; in_bufs[1].pvBuffer = NULL; } assert(in_bufs[0].BufferType == SECBUFFER_TOKEN); assert(in_bufs[1].BufferType == SECBUFFER_EMPTY); if(in_bufs[0].cbBuffer + 1024 > read_buf_size) { BYTE *new_read_buf; new_read_buf = heap_realloc(read_buf, read_buf_size + 1024); if(!new_read_buf) { status = E_OUTOFMEMORY; break; } in_bufs[0].pvBuffer = read_buf = new_read_buf; read_buf_size += 1024; } size = sock_recv(connection->socket, read_buf+in_bufs[0].cbBuffer, read_buf_size-in_bufs[0].cbBuffer, 0); if(size < 1) { WARN("recv error\n"); res = ERROR_INTERNET_SECURITY_CHANNEL_ERROR; break; } TRACE("recv %lu bytes\n", size); in_bufs[0].cbBuffer += size; in_bufs[0].pvBuffer = read_buf; status = InitializeSecurityContextW(cred, &ctx, connection->server->name, isc_req_flags, 0, 0, &in_desc, 0, NULL, &out_desc, &attrs, NULL); TRACE("InitializeSecurityContext ret %08x\n", status); if(status == SEC_E_OK) { if(SecIsValidHandle(&connection->ssl_ctx)) DeleteSecurityContext(&connection->ssl_ctx); connection->ssl_ctx = ctx; if(in_bufs[1].BufferType == SECBUFFER_EXTRA) FIXME("SECBUFFER_EXTRA not supported\n"); status = QueryContextAttributesW(&ctx, SECPKG_ATTR_STREAM_SIZES, &connection->ssl_sizes); if(status != SEC_E_OK) { WARN("Could not get sizes\n"); break; } status = QueryContextAttributesW(&ctx, SECPKG_ATTR_REMOTE_CERT_CONTEXT, (void*)&cert); if(status == SEC_E_OK) { res = netconn_verify_cert(connection, cert, cert->hCertStore); CertFreeCertificateContext(cert); if(res != ERROR_SUCCESS) { WARN("cert verify failed: %u\n", res); break; } }else { WARN("Could not get cert\n"); break; } connection->ssl_buf = heap_alloc(connection->ssl_sizes.cbHeader + connection->ssl_sizes.cbMaximumMessage + connection->ssl_sizes.cbTrailer); if(!connection->ssl_buf) { res = GetLastError(); break; } } } heap_free(read_buf); if(status != SEC_E_OK || res != ERROR_SUCCESS) { WARN("Failed to establish SSL connection: %08x (%u)\n", status, res); heap_free(connection->ssl_buf); connection->ssl_buf = NULL; return res ? res : ERROR_INTERNET_SECURITY_CHANNEL_ERROR; } TRACE("established SSL connection\n"); connection->secure = TRUE; connection->security_flags |= SECURITY_FLAG_SECURE; bits = NETCON_GetCipherStrength(connection); if (bits >= 128) connection->security_flags |= SECURITY_FLAG_STRENGTH_STRONG; else if (bits >= 56) connection->security_flags |= SECURITY_FLAG_STRENGTH_MEDIUM; else connection->security_flags |= SECURITY_FLAG_STRENGTH_WEAK; if(connection->mask_errors) connection->server->security_flags = connection->security_flags; return ERROR_SUCCESS; }