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wine/dlls/wininet/netconnection.c
Jacek Caban 9d3fda008f wininet: Cache blocking state in netconn_t.
2015-06-22 19:16:49 +09:00

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/*
* 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 <time.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <assert.h>
#include "wine/library.h"
#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(BOOL useSSL, 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);
}
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, sizeof(bufs)/sizeof(*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, sizeof(bufs)/sizeof(*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 < 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;
}
/******************************************************************************
* 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;
}
}
/******************************************************************************
* NETCON_query_data_available
* Returns the number of bytes of peeked data plus the number of bytes of
* queued, but unread data.
*/
BOOL NETCON_query_data_available(netconn_t *connection, DWORD *available)
{
*available = 0;
if(!connection->secure)
{
ULONG unread;
int retval = ioctlsocket(connection->socket, FIONREAD, &unread);
if (!retval)
{
TRACE("%d bytes of queued, but unread data\n", unread);
*available += unread;
}
}
else
{
*available = connection->peek_len;
}
return TRUE;
}
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;
}
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