/* * Wininet - networking layer * * Copyright 2002 TransGaming Technologies Inc. * Copyright 2013 Jacek Caban for CodeWeavers * * David Hammerton * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA */ #define NONAMELESSUNION #include "ws2tcpip.h" #include #include #include #include #include #include #include "windef.h" #include "winbase.h" #include "wininet.h" #include "winerror.h" #include "wine/debug.h" #include "internet.h" WINE_DEFAULT_DEBUG_CHANNEL(wininet); static DWORD netconn_verify_cert(netconn_t *conn, PCCERT_CONTEXT cert, HCERTSTORE store) { BOOL ret; CERT_CHAIN_PARA chainPara = { sizeof(chainPara), { 0 } }; PCCERT_CHAIN_CONTEXT chain; char oid_server_auth[] = szOID_PKIX_KP_SERVER_AUTH; char *server_auth[] = { oid_server_auth }; DWORD err = ERROR_SUCCESS, errors; static const DWORD supportedErrors = CERT_TRUST_IS_NOT_TIME_VALID | CERT_TRUST_IS_UNTRUSTED_ROOT | CERT_TRUST_IS_PARTIAL_CHAIN | CERT_TRUST_IS_NOT_SIGNATURE_VALID | CERT_TRUST_IS_NOT_VALID_FOR_USAGE; TRACE("verifying %s\n", debugstr_w(conn->server->name)); chainPara.RequestedUsage.Usage.cUsageIdentifier = 1; chainPara.RequestedUsage.Usage.rgpszUsageIdentifier = server_auth; if (!(ret = CertGetCertificateChain(NULL, cert, NULL, store, &chainPara, 0, NULL, &chain))) { TRACE("failed\n"); return GetLastError(); } errors = chain->TrustStatus.dwErrorStatus; do { /* This seems strange, but that's what tests show */ if(errors & CERT_TRUST_IS_PARTIAL_CHAIN) { WARN("ERROR_INTERNET_SEC_CERT_REV_FAILED\n"); err = ERROR_INTERNET_SEC_CERT_REV_FAILED; if(conn->mask_errors) conn->security_flags |= _SECURITY_FLAG_CERT_REV_FAILED; if(!(conn->security_flags & SECURITY_FLAG_IGNORE_REVOCATION)) break; } if (chain->TrustStatus.dwErrorStatus & ~supportedErrors) { WARN("error status %x\n", chain->TrustStatus.dwErrorStatus & ~supportedErrors); err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_SEC_INVALID_CERT; errors &= supportedErrors; if(!conn->mask_errors) break; WARN("unknown error flags\n"); } if(errors & CERT_TRUST_IS_NOT_TIME_VALID) { WARN("CERT_TRUST_IS_NOT_TIME_VALID\n"); if(!(conn->security_flags & SECURITY_FLAG_IGNORE_CERT_DATE_INVALID)) { err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_SEC_CERT_DATE_INVALID; if(!conn->mask_errors) break; conn->security_flags |= _SECURITY_FLAG_CERT_INVALID_DATE; } errors &= ~CERT_TRUST_IS_NOT_TIME_VALID; } if(errors & CERT_TRUST_IS_UNTRUSTED_ROOT) { WARN("CERT_TRUST_IS_UNTRUSTED_ROOT\n"); if(!(conn->security_flags & SECURITY_FLAG_IGNORE_UNKNOWN_CA)) { err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_INVALID_CA; if(!conn->mask_errors) break; conn->security_flags |= _SECURITY_FLAG_CERT_INVALID_CA; } errors &= ~CERT_TRUST_IS_UNTRUSTED_ROOT; } if(errors & CERT_TRUST_IS_PARTIAL_CHAIN) { WARN("CERT_TRUST_IS_PARTIAL_CHAIN\n"); if(!(conn->security_flags & SECURITY_FLAG_IGNORE_UNKNOWN_CA)) { err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_INVALID_CA; if(!conn->mask_errors) break; conn->security_flags |= _SECURITY_FLAG_CERT_INVALID_CA; } errors &= ~CERT_TRUST_IS_PARTIAL_CHAIN; } if(errors & CERT_TRUST_IS_NOT_SIGNATURE_VALID) { WARN("CERT_TRUST_IS_NOT_SIGNATURE_VALID\n"); if(!(conn->security_flags & SECURITY_FLAG_IGNORE_UNKNOWN_CA)) { err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_INVALID_CA; if(!conn->mask_errors) break; conn->security_flags |= _SECURITY_FLAG_CERT_INVALID_CA; } errors &= ~CERT_TRUST_IS_NOT_SIGNATURE_VALID; } if(errors & CERT_TRUST_IS_NOT_VALID_FOR_USAGE) { WARN("CERT_TRUST_IS_NOT_VALID_FOR_USAGE\n"); if(!(conn->security_flags & SECURITY_FLAG_IGNORE_WRONG_USAGE)) { err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_SEC_INVALID_CERT; if(!conn->mask_errors) break; WARN("CERT_TRUST_IS_NOT_VALID_FOR_USAGE, unknown error flags\n"); } errors &= ~CERT_TRUST_IS_NOT_VALID_FOR_USAGE; } if(err == ERROR_INTERNET_SEC_CERT_REV_FAILED) { assert(conn->security_flags & SECURITY_FLAG_IGNORE_REVOCATION); err = ERROR_SUCCESS; } }while(0); if(!err || conn->mask_errors) { CERT_CHAIN_POLICY_PARA policyPara; SSL_EXTRA_CERT_CHAIN_POLICY_PARA sslExtraPolicyPara; CERT_CHAIN_POLICY_STATUS policyStatus; CERT_CHAIN_CONTEXT chainCopy; /* Clear chain->TrustStatus.dwErrorStatus so * CertVerifyCertificateChainPolicy will verify additional checks * rather than stopping with an existing, ignored error. */ memcpy(&chainCopy, chain, sizeof(chainCopy)); chainCopy.TrustStatus.dwErrorStatus = 0; sslExtraPolicyPara.u.cbSize = sizeof(sslExtraPolicyPara); sslExtraPolicyPara.dwAuthType = AUTHTYPE_SERVER; sslExtraPolicyPara.pwszServerName = conn->server->name; sslExtraPolicyPara.fdwChecks = conn->security_flags; policyPara.cbSize = sizeof(policyPara); policyPara.dwFlags = 0; policyPara.pvExtraPolicyPara = &sslExtraPolicyPara; ret = CertVerifyCertificateChainPolicy(CERT_CHAIN_POLICY_SSL, &chainCopy, &policyPara, &policyStatus); /* Any error in the policy status indicates that the * policy couldn't be verified. */ if(ret) { if(policyStatus.dwError == CERT_E_CN_NO_MATCH) { WARN("CERT_E_CN_NO_MATCH\n"); if(conn->mask_errors) conn->security_flags |= _SECURITY_FLAG_CERT_INVALID_CN; err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_SEC_CERT_CN_INVALID; }else if(policyStatus.dwError) { WARN("policyStatus.dwError %x\n", policyStatus.dwError); if(conn->mask_errors) WARN("unknown error flags for policy status %x\n", policyStatus.dwError); err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_SEC_INVALID_CERT; } }else { err = GetLastError(); } } if(err) { WARN("failed %u\n", err); CertFreeCertificateChain(chain); if(conn->server->cert_chain) { CertFreeCertificateChain(conn->server->cert_chain); conn->server->cert_chain = NULL; } if(conn->mask_errors) conn->server->security_flags |= conn->security_flags & _SECURITY_ERROR_FLAGS_MASK; return err; } /* FIXME: Reuse cached chain */ if(conn->server->cert_chain) CertFreeCertificateChain(chain); else conn->server->cert_chain = chain; return ERROR_SUCCESS; } static SecHandle cred_handle, compat_cred_handle; static BOOL cred_handle_initialized, have_compat_cred_handle; static CRITICAL_SECTION init_sechandle_cs; static CRITICAL_SECTION_DEBUG init_sechandle_cs_debug = { 0, 0, &init_sechandle_cs, { &init_sechandle_cs_debug.ProcessLocksList, &init_sechandle_cs_debug.ProcessLocksList }, 0, 0, { (DWORD_PTR)(__FILE__ ": init_sechandle_cs") } }; static CRITICAL_SECTION init_sechandle_cs = { &init_sechandle_cs_debug, -1, 0, 0, 0, 0 }; static BOOL ensure_cred_handle(void) { SECURITY_STATUS res = SEC_E_OK; EnterCriticalSection(&init_sechandle_cs); if(!cred_handle_initialized) { SCHANNEL_CRED cred = {SCHANNEL_CRED_VERSION}; SecPkgCred_SupportedProtocols prots; res = AcquireCredentialsHandleW(NULL, (WCHAR*)UNISP_NAME_W, SECPKG_CRED_OUTBOUND, NULL, &cred, NULL, NULL, &cred_handle, NULL); if(res == SEC_E_OK) { res = QueryCredentialsAttributesA(&cred_handle, SECPKG_ATTR_SUPPORTED_PROTOCOLS, &prots); if(res != SEC_E_OK || (prots.grbitProtocol & SP_PROT_TLS1_1PLUS_CLIENT)) { cred.grbitEnabledProtocols = prots.grbitProtocol & ~SP_PROT_TLS1_1PLUS_CLIENT; res = AcquireCredentialsHandleW(NULL, (WCHAR*)UNISP_NAME_W, SECPKG_CRED_OUTBOUND, NULL, &cred, NULL, NULL, &compat_cred_handle, NULL); have_compat_cred_handle = res == SEC_E_OK; } } cred_handle_initialized = res == SEC_E_OK; } LeaveCriticalSection(&init_sechandle_cs); if(res != SEC_E_OK) { WARN("Failed: %08x\n", res); return FALSE; } return TRUE; } static BOOL winsock_loaded = FALSE; static BOOL WINAPI winsock_startup(INIT_ONCE *once, void *param, void **context) { WSADATA wsa_data; DWORD res; res = WSAStartup(MAKEWORD(1,1), &wsa_data); if(res == ERROR_SUCCESS) winsock_loaded = TRUE; else ERR("WSAStartup failed: %u\n", res); return TRUE; } void init_winsock(void) { static INIT_ONCE init_once = INIT_ONCE_STATIC_INIT; InitOnceExecuteOnce(&init_once, winsock_startup, NULL, NULL); } static void set_socket_blocking(netconn_t *conn, BOOL is_blocking) { if(conn->is_blocking != is_blocking) { ULONG arg = !is_blocking; ioctlsocket(conn->socket, FIONBIO, &arg); } conn->is_blocking = is_blocking; } 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; } DWORD create_netconn(server_t *server, DWORD security_flags, BOOL mask_errors, DWORD timeout, netconn_t **ret) { netconn_t *netconn; int result; netconn = heap_alloc_zero(sizeof(*netconn)); if(!netconn) return ERROR_OUTOFMEMORY; netconn->socket = -1; netconn->security_flags = security_flags | server->security_flags; netconn->mask_errors = mask_errors; list_init(&netconn->pool_entry); SecInvalidateHandle(&netconn->ssl_ctx); result = create_netconn_socket(server, netconn, timeout); if (result != ERROR_SUCCESS) { heap_free(netconn); return result; } server_addref(server); netconn->server = server; *ret = netconn; return result; } BOOL is_valid_netconn(netconn_t *netconn) { return netconn && netconn->socket != -1; } void close_netconn(netconn_t *netconn) { closesocket(netconn->socket); netconn->socket = -1; } void free_netconn(netconn_t *netconn) { server_release(netconn->server); if (netconn->secure) { heap_free(netconn->peek_msg_mem); netconn->peek_msg_mem = NULL; netconn->peek_msg = NULL; netconn->peek_len = 0; heap_free(netconn->ssl_buf); netconn->ssl_buf = NULL; heap_free(netconn->extra_buf); netconn->extra_buf = NULL; netconn->extra_len = 0; } if (SecIsValidHandle(&netconn->ssl_ctx)) DeleteSecurityContext(&netconn->ssl_ctx); close_netconn(netconn); heap_free(netconn); } void NETCON_unload(void) { if(cred_handle_initialized) FreeCredentialsHandle(&cred_handle); if(have_compat_cred_handle) FreeCredentialsHandle(&compat_cred_handle); DeleteCriticalSection(&init_sechandle_cs); if(winsock_loaded) WSACleanup(); } int sock_send(int fd, const void *msg, size_t len, int flags) { int ret; do { ret = send(fd, msg, len, flags); } while(ret == -1 && WSAGetLastError() == WSAEINTR); return ret; } int sock_recv(int fd, void *msg, size_t len, int flags) { int ret; do { ret = recv(fd, msg, len, flags); } while(ret == -1 && WSAGetLastError() == WSAEINTR); return ret; } 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; } /****************************************************************************** * NETCON_secure_connect * Initiates a secure connection over an existing plaintext connection. */ DWORD NETCON_secure_connect(netconn_t *connection, server_t *server) { DWORD res; /* can't connect if we are already connected */ if(connection->secure) { ERR("already connected\n"); return ERROR_INTERNET_CANNOT_CONNECT; } if(server != connection->server) { server_release(connection->server); server_addref(server); connection->server = server; } /* connect with given TLS options */ res = netcon_secure_connect_setup(connection, FALSE); if (res == ERROR_SUCCESS) return res; /* FIXME: when got version alert and FIN from server */ /* fallback to connect without TLSv1.1/TLSv1.2 */ if (res == ERROR_INTERNET_SECURITY_CHANNEL_ERROR && have_compat_cred_handle) { closesocket(connection->socket); res = create_netconn_socket(connection->server, connection, 500); if (res != ERROR_SUCCESS) return res; res = netcon_secure_connect_setup(connection, TRUE); } return res; } static BOOL send_ssl_chunk(netconn_t *conn, const void *msg, size_t size) { SecBuffer bufs[4] = { {conn->ssl_sizes.cbHeader, SECBUFFER_STREAM_HEADER, conn->ssl_buf}, {size, SECBUFFER_DATA, conn->ssl_buf+conn->ssl_sizes.cbHeader}, {conn->ssl_sizes.cbTrailer, SECBUFFER_STREAM_TRAILER, conn->ssl_buf+conn->ssl_sizes.cbHeader+size}, {0, SECBUFFER_EMPTY, NULL} }; SecBufferDesc buf_desc = {SECBUFFER_VERSION, ARRAY_SIZE(bufs), bufs}; SECURITY_STATUS res; memcpy(bufs[1].pvBuffer, msg, size); res = EncryptMessage(&conn->ssl_ctx, 0, &buf_desc, 0); if(res != SEC_E_OK) { WARN("EncryptMessage failed\n"); return FALSE; } if(sock_send(conn->socket, conn->ssl_buf, bufs[0].cbBuffer+bufs[1].cbBuffer+bufs[2].cbBuffer, 0) < 1) { WARN("send failed\n"); return FALSE; } return TRUE; } /****************************************************************************** * 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; } } static BOOL read_ssl_chunk(netconn_t *conn, void *buf, SIZE_T buf_size, BOOL blocking, 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, ARRAY_SIZE(bufs), bufs}; SSIZE_T size, buf_len = 0; int i; SECURITY_STATUS res; assert(conn->extra_len < ssl_buf_size); 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; } set_socket_blocking(conn, blocking && !buf_len); size = sock_recv(conn->socket, conn->ssl_buf+buf_len, ssl_buf_size-buf_len, 0); if(size < 0) { if(!buf_len) { if(WSAGetLastError() == WSAEWOULDBLOCK) { TRACE("would block\n"); return WSAEWOULDBLOCK; } WARN("recv failed\n"); return ERROR_INTERNET_CONNECTION_ABORTED; } }else { buf_len += size; } if(!buf_len) { TRACE("EOF\n"); *eof = TRUE; *ret_size = 0; 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, blocking); size = sock_recv(conn->socket, conn->ssl_buf+buf_len, ssl_buf_size-buf_len, 0); if(size < 1) { if(size < 0 && WSAGetLastError() == WSAEWOULDBLOCK) { 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 < ARRAY_SIZE(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 < ARRAY_SIZE(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; } /****************************************************************************** * 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; } } 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); } LPCVOID NETCON_GetCert(netconn_t *connection) { const CERT_CONTEXT *ret; SECURITY_STATUS res; res = QueryContextAttributesW(&connection->ssl_ctx, SECPKG_ATTR_REMOTE_CERT_CONTEXT, (void*)&ret); return res == SEC_E_OK ? ret : NULL; } int NETCON_GetCipherStrength(netconn_t *connection) { SecPkgContext_ConnectionInfo conn_info; SECURITY_STATUS res; if (!connection->secure) return 0; res = QueryContextAttributesW(&connection->ssl_ctx, SECPKG_ATTR_CONNECTION_INFO, (void*)&conn_info); if(res != SEC_E_OK) WARN("QueryContextAttributesW failed: %08x\n", res); return res == SEC_E_OK ? conn_info.dwCipherStrength : 0; } DWORD NETCON_set_timeout(netconn_t *connection, BOOL send, DWORD value) { int result; result = setsockopt(connection->socket, SOL_SOCKET, send ? SO_SNDTIMEO : SO_RCVTIMEO, (void*)&value, sizeof(value)); if (result == -1) { WARN("setsockopt failed\n"); return WSAGetLastError(); } return ERROR_SUCCESS; }