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wine/dlls/wininet/netconnection.c
Andrew Talbot ae77b3d368 wininet: Avoid signed-unsigned integer comparisons.
2013-03-13 11:29:29 +01:00

1125 lines
34 KiB
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/*
* Wininet - networking layer. Uses unix sockets or OpenSSL.
*
* Copyright 2002 TransGaming Technologies Inc.
*
* 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
*/
#include "config.h"
#include "wine/port.h"
#define NONAMELESSUNION
#if defined(__MINGW32__) || defined (_MSC_VER)
#include <ws2tcpip.h>
#endif
#include <sys/types.h>
#ifdef HAVE_POLL_H
#include <poll.h>
#endif
#ifdef HAVE_SYS_POLL_H
# include <sys/poll.h>
#endif
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#ifdef HAVE_SYS_FILIO_H
# include <sys/filio.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#ifdef HAVE_SYS_IOCTL_H
# include <sys/ioctl.h>
#endif
#include <time.h>
#ifdef HAVE_NETDB_H
# include <netdb.h>
#endif
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
#ifdef HAVE_NETINET_TCP_H
# include <netinet/tcp.h>
#endif
#ifdef HAVE_OPENSSL_SSL_H
# include <openssl/ssl.h>
# include <openssl/opensslv.h>
#undef FAR
#undef DSA
#endif
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <errno.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"
/* To avoid conflicts with the Unix socket headers. we only need it for
* the error codes anyway. */
#define USE_WS_PREFIX
#include "winsock2.h"
#define RESPONSE_TIMEOUT 30 /* FROM internet.c */
WINE_DEFAULT_DEBUG_CHANNEL(wininet);
/* FIXME!!!!!!
* This should use winsock - To use winsock the functions will have to change a bit
* as they are designed for unix sockets.
* SSL stuff should use crypt32.dll
*/
#ifdef SONAME_LIBSSL
#include <openssl/err.h>
static void *OpenSSL_ssl_handle;
static void *OpenSSL_crypto_handle;
#if defined(OPENSSL_VERSION_NUMBER) && (OPENSSL_VERSION_NUMBER > 0x10000000)
static const SSL_METHOD *meth;
#else
static SSL_METHOD *meth;
#endif
static SSL_CTX *ctx;
static int error_idx;
static int conn_idx;
#define MAKE_FUNCPTR(f) static typeof(f) * p##f
/* OpenSSL functions that we use */
MAKE_FUNCPTR(SSL_library_init);
MAKE_FUNCPTR(SSL_load_error_strings);
MAKE_FUNCPTR(SSLv23_method);
MAKE_FUNCPTR(SSL_CTX_free);
MAKE_FUNCPTR(SSL_CTX_new);
MAKE_FUNCPTR(SSL_CTX_ctrl);
MAKE_FUNCPTR(SSL_new);
MAKE_FUNCPTR(SSL_free);
MAKE_FUNCPTR(SSL_ctrl);
MAKE_FUNCPTR(SSL_set_fd);
MAKE_FUNCPTR(SSL_connect);
MAKE_FUNCPTR(SSL_shutdown);
MAKE_FUNCPTR(SSL_write);
MAKE_FUNCPTR(SSL_read);
MAKE_FUNCPTR(SSL_pending);
MAKE_FUNCPTR(SSL_get_error);
MAKE_FUNCPTR(SSL_get_ex_new_index);
MAKE_FUNCPTR(SSL_get_ex_data);
MAKE_FUNCPTR(SSL_set_ex_data);
MAKE_FUNCPTR(SSL_get_ex_data_X509_STORE_CTX_idx);
MAKE_FUNCPTR(SSL_get_peer_certificate);
MAKE_FUNCPTR(SSL_CTX_get_timeout);
MAKE_FUNCPTR(SSL_CTX_set_timeout);
MAKE_FUNCPTR(SSL_CTX_set_default_verify_paths);
MAKE_FUNCPTR(SSL_CTX_set_verify);
MAKE_FUNCPTR(SSL_get_current_cipher);
MAKE_FUNCPTR(SSL_CIPHER_get_bits);
/* OpenSSL's libcrypto functions that we use */
MAKE_FUNCPTR(BIO_new_fp);
MAKE_FUNCPTR(CRYPTO_num_locks);
MAKE_FUNCPTR(CRYPTO_set_id_callback);
MAKE_FUNCPTR(CRYPTO_set_locking_callback);
MAKE_FUNCPTR(ERR_free_strings);
MAKE_FUNCPTR(ERR_get_error);
MAKE_FUNCPTR(ERR_error_string);
MAKE_FUNCPTR(X509_STORE_CTX_get_ex_data);
MAKE_FUNCPTR(X509_STORE_CTX_get_chain);
MAKE_FUNCPTR(i2d_X509);
MAKE_FUNCPTR(sk_num);
MAKE_FUNCPTR(sk_value);
#undef MAKE_FUNCPTR
static CRITICAL_SECTION *ssl_locks;
static unsigned int num_ssl_locks;
static unsigned long ssl_thread_id(void)
{
return GetCurrentThreadId();
}
static void ssl_lock_callback(int mode, int type, const char *file, int line)
{
if (mode & CRYPTO_LOCK)
EnterCriticalSection(&ssl_locks[type]);
else
LeaveCriticalSection(&ssl_locks[type]);
}
static PCCERT_CONTEXT X509_to_cert_context(X509 *cert)
{
unsigned char* buffer,*p;
INT len;
BOOL malloced = FALSE;
PCCERT_CONTEXT ret;
p = NULL;
len = pi2d_X509(cert,&p);
/*
* SSL 0.9.7 and above malloc the buffer if it is null.
* however earlier version do not and so we would need to alloc the buffer.
*
* see the i2d_X509 man page for more details.
*/
if (!p)
{
buffer = heap_alloc(len);
p = buffer;
len = pi2d_X509(cert,&p);
}
else
{
buffer = p;
malloced = TRUE;
}
ret = CertCreateCertificateContext(X509_ASN_ENCODING,buffer,len);
if (malloced)
free(buffer);
else
heap_free(buffer);
return ret;
}
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_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_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 int netconn_secure_verify(int preverify_ok, X509_STORE_CTX *ctx)
{
SSL *ssl;
BOOL ret = FALSE;
HCERTSTORE store = CertOpenStore(CERT_STORE_PROV_MEMORY, 0, 0,
CERT_STORE_CREATE_NEW_FLAG, NULL);
netconn_t *conn;
ssl = pX509_STORE_CTX_get_ex_data(ctx,
pSSL_get_ex_data_X509_STORE_CTX_idx());
conn = pSSL_get_ex_data(ssl, conn_idx);
if (store)
{
X509 *cert;
int i;
PCCERT_CONTEXT endCert = NULL;
struct stack_st *chain = (struct stack_st *)pX509_STORE_CTX_get_chain( ctx );
ret = TRUE;
for (i = 0; ret && i < psk_num(chain); i++)
{
PCCERT_CONTEXT context;
cert = (X509 *)psk_value(chain, i);
if ((context = X509_to_cert_context(cert)))
{
ret = CertAddCertificateContextToStore(store, context,
CERT_STORE_ADD_ALWAYS, i ? NULL : &endCert);
CertFreeCertificateContext(context);
}
}
if (!endCert) ret = FALSE;
if (ret)
{
DWORD_PTR err = netconn_verify_cert(conn, endCert, store);
if (err)
{
pSSL_set_ex_data(ssl, error_idx, (void *)err);
ret = FALSE;
}
}
CertFreeCertificateContext(endCert);
CertCloseStore(store, 0);
}
return ret;
}
static long get_tls_option(void) {
long tls_option = SSL_OP_NO_SSLv2; /* disable SSLv2 for security reason, secur32/Schannel(GnuTLS) don't support it */
#ifdef SSL_OP_NO_TLSv1_2
DWORD type, val, size;
HKEY hkey,tls12_client,tls11_client;
LONG res;
const WCHAR Schannel_Prot[] = { /* SYSTEM\\CurrentControlSet\\Control\\SecurityProviders\\SCANNEL\\Protocols */
'S','Y','S','T','E','M','\\',
'C','u','r','r','e','n','t','C','o','n','t','r','o','l','S','e','t','\\',
'C','o','n','t','r','o','l','\\',
'S','e','c','u','r','i','t','y','P','r','o','v','i','d','e','r','s','\\',
'S','C','H','A','N','N','E','L','\\',
'P','r','o','t','o','c','o','l','s',0 };
const WCHAR TLS12_Client[] = {'T','L','S',' ','1','.','2','\\','C','l','i','e','n','t',0};
const WCHAR TLS11_Client[] = {'T','L','S',' ','1','.','1','\\','C','l','i','e','n','t',0};
const WCHAR DisabledByDefault[] = {'D','i','s','a','b','l','e','d','B','y','D','e','f','a','u','l','t',0};
res = RegOpenKeyExW(HKEY_LOCAL_MACHINE,
Schannel_Prot,
0, KEY_READ, &hkey);
if (res != ERROR_SUCCESS) { /* enabled TLSv1.1/1.2 when no registry entry */
return tls_option;
}
if (RegOpenKeyExW(hkey, TLS12_Client, 0, KEY_READ, &tls12_client) == ERROR_SUCCESS) {
size = sizeof(DWORD);
if (RegQueryValueExW(tls12_client, DisabledByDefault, NULL, &type, (LPBYTE) &val, &size) == ERROR_SUCCESS
&& type == REG_DWORD) {
tls_option |= val?SSL_OP_NO_TLSv1_2:0;
}
RegCloseKey(tls12_client);
}
if (RegOpenKeyExW(hkey, TLS11_Client, 0, KEY_READ, &tls11_client) == ERROR_SUCCESS) {
size = sizeof(DWORD);
if (RegQueryValueExW(tls11_client, DisabledByDefault, NULL, &type, (LPBYTE) &val, &size) == ERROR_SUCCESS
&& type == REG_DWORD) {
tls_option |= val?SSL_OP_NO_TLSv1_1:0;
}
RegCloseKey(tls11_client);
}
RegCloseKey(hkey);
#endif
return tls_option;
}
static CRITICAL_SECTION init_ssl_cs;
static CRITICAL_SECTION_DEBUG init_ssl_cs_debug =
{
0, 0, &init_ssl_cs,
{ &init_ssl_cs_debug.ProcessLocksList,
&init_ssl_cs_debug.ProcessLocksList },
0, 0, { (DWORD_PTR)(__FILE__ ": init_ssl_cs") }
};
static CRITICAL_SECTION init_ssl_cs = { &init_ssl_cs_debug, -1, 0, 0, 0, 0 };
static DWORD init_openssl(void)
{
#ifdef SONAME_LIBCRYPTO
unsigned int i;
if(OpenSSL_ssl_handle)
return ERROR_SUCCESS;
OpenSSL_ssl_handle = wine_dlopen(SONAME_LIBSSL, RTLD_NOW, NULL, 0);
if(!OpenSSL_ssl_handle) {
ERR("trying to use a SSL connection, but couldn't load %s. Expect trouble.\n", SONAME_LIBSSL);
return ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
}
OpenSSL_crypto_handle = wine_dlopen(SONAME_LIBCRYPTO, RTLD_NOW, NULL, 0);
if(!OpenSSL_crypto_handle) {
ERR("trying to use a SSL connection, but couldn't load %s. Expect trouble.\n", SONAME_LIBCRYPTO);
return ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
}
/* mmm nice ugly macroness */
#define DYNSSL(x) \
p##x = wine_dlsym(OpenSSL_ssl_handle, #x, NULL, 0); \
if (!p##x) { \
ERR("failed to load symbol %s\n", #x); \
return ERROR_INTERNET_SECURITY_CHANNEL_ERROR; \
}
DYNSSL(SSL_library_init);
DYNSSL(SSL_load_error_strings);
DYNSSL(SSLv23_method);
DYNSSL(SSL_CTX_free);
DYNSSL(SSL_CTX_new);
DYNSSL(SSL_CTX_ctrl);
DYNSSL(SSL_new);
DYNSSL(SSL_free);
DYNSSL(SSL_ctrl);
DYNSSL(SSL_set_fd);
DYNSSL(SSL_connect);
DYNSSL(SSL_shutdown);
DYNSSL(SSL_write);
DYNSSL(SSL_read);
DYNSSL(SSL_pending);
DYNSSL(SSL_get_error);
DYNSSL(SSL_get_ex_new_index);
DYNSSL(SSL_get_ex_data);
DYNSSL(SSL_set_ex_data);
DYNSSL(SSL_get_ex_data_X509_STORE_CTX_idx);
DYNSSL(SSL_get_peer_certificate);
DYNSSL(SSL_CTX_get_timeout);
DYNSSL(SSL_CTX_set_timeout);
DYNSSL(SSL_CTX_set_default_verify_paths);
DYNSSL(SSL_CTX_set_verify);
DYNSSL(SSL_get_current_cipher);
DYNSSL(SSL_CIPHER_get_bits);
#undef DYNSSL
#define DYNCRYPTO(x) \
p##x = wine_dlsym(OpenSSL_crypto_handle, #x, NULL, 0); \
if (!p##x) { \
ERR("failed to load symbol %s\n", #x); \
return ERROR_INTERNET_SECURITY_CHANNEL_ERROR; \
}
DYNCRYPTO(BIO_new_fp);
DYNCRYPTO(CRYPTO_num_locks);
DYNCRYPTO(CRYPTO_set_id_callback);
DYNCRYPTO(CRYPTO_set_locking_callback);
DYNCRYPTO(ERR_free_strings);
DYNCRYPTO(ERR_get_error);
DYNCRYPTO(ERR_error_string);
DYNCRYPTO(X509_STORE_CTX_get_ex_data);
DYNCRYPTO(X509_STORE_CTX_get_chain);
DYNCRYPTO(i2d_X509);
DYNCRYPTO(sk_num);
DYNCRYPTO(sk_value);
#undef DYNCRYPTO
#define pSSL_CTX_set_options(ctx,op) \
pSSL_CTX_ctrl((ctx),SSL_CTRL_OPTIONS,(op),NULL)
#define pSSL_set_options(ssl,op) \
pSSL_ctrl((ssl),SSL_CTRL_OPTIONS,(op),NULL)
pSSL_library_init();
pSSL_load_error_strings();
pBIO_new_fp(stderr, BIO_NOCLOSE); /* FIXME: should use winedebug stuff */
meth = pSSLv23_method();
ctx = pSSL_CTX_new(meth);
pSSL_CTX_set_options(ctx, get_tls_option());
if(!pSSL_CTX_set_default_verify_paths(ctx)) {
ERR("SSL_CTX_set_default_verify_paths failed: %s\n",
pERR_error_string(pERR_get_error(), 0));
return ERROR_OUTOFMEMORY;
}
error_idx = pSSL_get_ex_new_index(0, (void *)"error index", NULL, NULL, NULL);
if(error_idx == -1) {
ERR("SSL_get_ex_new_index failed; %s\n", pERR_error_string(pERR_get_error(), 0));
return ERROR_OUTOFMEMORY;
}
conn_idx = pSSL_get_ex_new_index(0, (void *)"netconn index", NULL, NULL, NULL);
if(conn_idx == -1) {
ERR("SSL_get_ex_new_index failed; %s\n", pERR_error_string(pERR_get_error(), 0));
return ERROR_OUTOFMEMORY;
}
pSSL_CTX_set_verify(ctx, SSL_VERIFY_PEER, netconn_secure_verify);
pCRYPTO_set_id_callback(ssl_thread_id);
num_ssl_locks = pCRYPTO_num_locks();
ssl_locks = heap_alloc(num_ssl_locks * sizeof(CRITICAL_SECTION));
if(!ssl_locks)
return ERROR_OUTOFMEMORY;
for(i = 0; i < num_ssl_locks; i++)
{
InitializeCriticalSection(&ssl_locks[i]);
ssl_locks[i].DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": ssl_locks");
}
pCRYPTO_set_locking_callback(ssl_lock_callback);
return ERROR_SUCCESS;
#else
FIXME("can't use SSL, libcrypto not compiled in.\n");
return ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
#endif
}
#endif /* SONAME_LIBSSL */
static DWORD create_netconn_socket(server_t *server, netconn_t *netconn, DWORD timeout)
{
int result;
ULONG flag;
assert(server->addr_len);
result = netconn->socket = socket(server->addr.ss_family, SOCK_STREAM, 0);
if(result != -1) {
flag = 1;
ioctlsocket(netconn->socket, FIONBIO, &flag);
result = connect(netconn->socket, (struct sockaddr*)&server->addr, server->addr_len);
if(result == -1)
{
if (sock_get_error(errno) == WSAEINPROGRESS) {
struct pollfd pfd;
int res;
pfd.fd = netconn->socket;
pfd.events = POLLOUT;
res = poll(&pfd, 1, timeout);
if (!res)
{
closesocket(netconn->socket);
return ERROR_INTERNET_CANNOT_CONNECT;
}
else if (res > 0)
{
int err;
socklen_t len = sizeof(err);
if (!getsockopt(netconn->socket, SOL_SOCKET, SO_ERROR, (void *)&err, &len) && !err)
result = 0;
}
}
}
if(result == -1)
closesocket(netconn->socket);
else {
flag = 0;
ioctlsocket(netconn->socket, FIONBIO, &flag);
}
}
if(result == -1)
return ERROR_INTERNET_CANNOT_CONNECT;
#ifdef TCP_NODELAY
flag = 1;
result = setsockopt(netconn->socket, IPPROTO_TCP, TCP_NODELAY, (void*)&flag, sizeof(flag));
if(result < 0)
WARN("setsockopt(TCP_NODELAY) failed\n");
#endif
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;
#ifdef SONAME_LIBSSL
if(useSSL) {
DWORD res;
TRACE("using SSL connection\n");
EnterCriticalSection(&init_ssl_cs);
res = init_openssl();
LeaveCriticalSection(&init_ssl_cs);
if(res != ERROR_SUCCESS)
return res;
}
#endif
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);
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;
}
void free_netconn(netconn_t *netconn)
{
server_release(netconn->server);
if (netconn->secure) {
#ifdef SONAME_LIBSSL
pSSL_shutdown(netconn->ssl_s);
pSSL_free(netconn->ssl_s);
#endif
}
closesocket(netconn->socket);
heap_free(netconn);
}
void NETCON_unload(void)
{
#if defined(SONAME_LIBSSL) && defined(SONAME_LIBCRYPTO)
if (OpenSSL_crypto_handle)
{
pERR_free_strings();
wine_dlclose(OpenSSL_crypto_handle, NULL, 0);
}
if (OpenSSL_ssl_handle)
{
if (ctx)
pSSL_CTX_free(ctx);
wine_dlclose(OpenSSL_ssl_handle, NULL, 0);
}
if (ssl_locks)
{
unsigned int i;
for (i = 0; i < num_ssl_locks; i++)
{
ssl_locks[i].DebugInfo->Spare[0] = 0;
DeleteCriticalSection(&ssl_locks[i]);
}
heap_free(ssl_locks);
}
#endif
}
/* translate a unix error code into a winsock one */
int sock_get_error( int err )
{
#if !defined(__MINGW32__) && !defined (_MSC_VER)
switch (err)
{
case EINTR: return WSAEINTR;
case EBADF: return WSAEBADF;
case EPERM:
case EACCES: return WSAEACCES;
case EFAULT: return WSAEFAULT;
case EINVAL: return WSAEINVAL;
case EMFILE: return WSAEMFILE;
case EWOULDBLOCK: return WSAEWOULDBLOCK;
case EINPROGRESS: return WSAEINPROGRESS;
case EALREADY: return WSAEALREADY;
case ENOTSOCK: return WSAENOTSOCK;
case EDESTADDRREQ: return WSAEDESTADDRREQ;
case EMSGSIZE: return WSAEMSGSIZE;
case EPROTOTYPE: return WSAEPROTOTYPE;
case ENOPROTOOPT: return WSAENOPROTOOPT;
case EPROTONOSUPPORT: return WSAEPROTONOSUPPORT;
case ESOCKTNOSUPPORT: return WSAESOCKTNOSUPPORT;
case EOPNOTSUPP: return WSAEOPNOTSUPP;
case EPFNOSUPPORT: return WSAEPFNOSUPPORT;
case EAFNOSUPPORT: return WSAEAFNOSUPPORT;
case EADDRINUSE: return WSAEADDRINUSE;
case EADDRNOTAVAIL: return WSAEADDRNOTAVAIL;
case ENETDOWN: return WSAENETDOWN;
case ENETUNREACH: return WSAENETUNREACH;
case ENETRESET: return WSAENETRESET;
case ECONNABORTED: return WSAECONNABORTED;
case EPIPE:
case ECONNRESET: return WSAECONNRESET;
case ENOBUFS: return WSAENOBUFS;
case EISCONN: return WSAEISCONN;
case ENOTCONN: return WSAENOTCONN;
case ESHUTDOWN: return WSAESHUTDOWN;
case ETOOMANYREFS: return WSAETOOMANYREFS;
case ETIMEDOUT: return WSAETIMEDOUT;
case ECONNREFUSED: return WSAECONNREFUSED;
case ELOOP: return WSAELOOP;
case ENAMETOOLONG: return WSAENAMETOOLONG;
case EHOSTDOWN: return WSAEHOSTDOWN;
case EHOSTUNREACH: return WSAEHOSTUNREACH;
case ENOTEMPTY: return WSAENOTEMPTY;
#ifdef EPROCLIM
case EPROCLIM: return WSAEPROCLIM;
#endif
#ifdef EUSERS
case EUSERS: return WSAEUSERS;
#endif
#ifdef EDQUOT
case EDQUOT: return WSAEDQUOT;
#endif
#ifdef ESTALE
case ESTALE: return WSAESTALE;
#endif
#ifdef EREMOTE
case EREMOTE: return WSAEREMOTE;
#endif
default: errno=err; perror("sock_set_error"); return WSAEFAULT;
}
#endif
return err;
}
#ifdef SONAME_LIBSSL
static DWORD netcon_secure_connect_setup(netconn_t *connection, long tls_option)
{
void *ssl_s;
DWORD res;
int bits;
ssl_s = pSSL_new(ctx);
if (!ssl_s)
{
ERR("SSL_new failed: %s\n",
pERR_error_string(pERR_get_error(), 0));
return ERROR_OUTOFMEMORY;
}
pSSL_set_options(ssl_s, tls_option);
if (!pSSL_set_fd(ssl_s, connection->socket))
{
ERR("SSL_set_fd failed: %s\n",
pERR_error_string(pERR_get_error(), 0));
res = ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
goto fail;
}
if (!pSSL_set_ex_data(ssl_s, conn_idx, connection))
{
ERR("SSL_set_ex_data failed: %s\n",
pERR_error_string(pERR_get_error(), 0));
res = ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
goto fail;
}
if (pSSL_connect(ssl_s) <= 0)
{
res = (DWORD_PTR)pSSL_get_ex_data(ssl_s, error_idx);
if (!res)
res = ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
ERR("SSL_connect failed: %d\n", res);
goto fail;
}
connection->ssl_s = ssl_s;
connection->secure = TRUE;
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;
connection->security_flags |= SECURITY_FLAG_SECURE;
if(connection->mask_errors)
connection->server->security_flags = connection->security_flags;
return ERROR_SUCCESS;
fail:
if (ssl_s)
{
pSSL_shutdown(ssl_s);
pSSL_free(ssl_s);
}
return res;
}
#endif
/******************************************************************************
* NETCON_secure_connect
* Initiates a secure connection over an existing plaintext connection.
*/
DWORD NETCON_secure_connect(netconn_t *connection, server_t *server)
{
DWORD res = ERROR_NOT_SUPPORTED;
/* 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;
}
#ifdef SONAME_LIBSSL
/* connect with given TLS options */
res = netcon_secure_connect_setup(connection, get_tls_option());
if (res == ERROR_SUCCESS)
return res;
#ifdef SSL_OP_NO_TLSv1_2
/* FIXME: when got version alert and FIN from server */
/* fallback to connect without TLSv1.1/TLSv1.2 */
if (res == ERROR_INTERNET_SECURITY_CHANNEL_ERROR)
{
closesocket(connection->socket);
pSSL_CTX_set_options(ctx,SSL_OP_NO_TLSv1_1|SSL_OP_NO_TLSv1_2);
res = create_netconn_socket(connection->server, connection, 500);
if (res != ERROR_SUCCESS)
return res;
res = netcon_secure_connect_setup(connection, get_tls_option()|SSL_OP_NO_TLSv1_1|SSL_OP_NO_TLSv1_2);
}
#endif
#else
FIXME("Cannot connect, OpenSSL not available.\n");
#endif
return res;
}
/******************************************************************************
* 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 */)
{
if(!connection->secure)
{
*sent = send(connection->socket, msg, len, flags);
if (*sent == -1)
return sock_get_error(errno);
return ERROR_SUCCESS;
}
else
{
#ifdef SONAME_LIBSSL
if(!connection->secure) {
FIXME("not connected\n");
return ERROR_NOT_SUPPORTED;
}
if (flags)
FIXME("SSL_write doesn't support any flags (%08x)\n", flags);
*sent = pSSL_write(connection->ssl_s, msg, len);
if (*sent < 1 && len)
return ERROR_INTERNET_CONNECTION_ABORTED;
return ERROR_SUCCESS;
#else
FIXME("not supported on this platform\n");
return ERROR_NOT_SUPPORTED;
#endif
}
}
/******************************************************************************
* 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, int flags, int *recvd)
{
*recvd = 0;
if (!len)
return ERROR_SUCCESS;
if (!connection->secure)
{
*recvd = recv(connection->socket, buf, len, flags);
return *recvd == -1 ? sock_get_error(errno) : ERROR_SUCCESS;
}
else
{
#ifdef SONAME_LIBSSL
if(!connection->secure) {
FIXME("not connected\n");
return ERROR_NOT_SUPPORTED;
}
*recvd = pSSL_read(connection->ssl_s, buf, len);
/* Check if EOF was received */
if(!*recvd && (pSSL_get_error(connection->ssl_s, *recvd)==SSL_ERROR_ZERO_RETURN
|| pSSL_get_error(connection->ssl_s, *recvd)==SSL_ERROR_SYSCALL))
return ERROR_SUCCESS;
return *recvd > 0 ? ERROR_SUCCESS : ERROR_INTERNET_CONNECTION_ABORTED;
#else
FIXME("not supported on this platform\n");
return ERROR_NOT_SUPPORTED;
#endif
}
}
/******************************************************************************
* 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)
{
#ifdef FIONREAD
ULONG unread;
int retval = ioctlsocket(connection->socket, FIONREAD, &unread);
if (!retval)
{
TRACE("%d bytes of queued, but unread data\n", unread);
*available += unread;
}
#endif
}
else
{
#ifdef SONAME_LIBSSL
*available = pSSL_pending(connection->ssl_s);
#else
FIXME("not supported on this platform\n");
return FALSE;
#endif
}
return TRUE;
}
BOOL NETCON_is_alive(netconn_t *netconn)
{
#ifdef MSG_DONTWAIT
ssize_t len;
BYTE b;
len = recv(netconn->socket, &b, 1, MSG_PEEK|MSG_DONTWAIT);
return len == 1 || (len == -1 && errno == EWOULDBLOCK);
#elif defined(__MINGW32__) || defined(_MSC_VER)
ULONG mode;
int len;
char b;
mode = 1;
if(!ioctlsocket(netconn->socket, FIONBIO, &mode))
return FALSE;
len = recv(netconn->socket, &b, 1, MSG_PEEK);
mode = 0;
if(!ioctlsocket(netconn->socket, FIONBIO, &mode))
return FALSE;
return len == 1 || (len == -1 && errno == WSAEWOULDBLOCK);
#else
FIXME("not supported on this platform\n");
return TRUE;
#endif
}
LPCVOID NETCON_GetCert(netconn_t *connection)
{
#ifdef SONAME_LIBSSL
X509* cert;
LPCVOID r = NULL;
if (!connection->secure)
return NULL;
cert = pSSL_get_peer_certificate(connection->ssl_s);
r = X509_to_cert_context(cert);
return r;
#else
FIXME("not supported on this platform\n");
return NULL;
#endif
}
int NETCON_GetCipherStrength(netconn_t *connection)
{
#ifdef SONAME_LIBSSL
#if defined(OPENSSL_VERSION_NUMBER) && (OPENSSL_VERSION_NUMBER >= 0x0090707f)
const SSL_CIPHER *cipher;
#else
SSL_CIPHER *cipher;
#endif
int bits = 0;
if (!connection->secure)
return 0;
cipher = pSSL_get_current_cipher(connection->ssl_s);
if (!cipher)
return 0;
pSSL_CIPHER_get_bits(cipher, &bits);
return bits;
#else
FIXME("not supported on this platform\n");
return 0;
#endif
}
DWORD NETCON_set_timeout(netconn_t *connection, BOOL send, DWORD value)
{
int result;
struct timeval tv;
/* value is in milliseconds, convert to struct timeval */
if (value == INFINITE)
{
tv.tv_sec = 0;
tv.tv_usec = 0;
}
else
{
tv.tv_sec = value / 1000;
tv.tv_usec = (value % 1000) * 1000;
}
result = setsockopt(connection->socket, SOL_SOCKET,
send ? SO_SNDTIMEO : SO_RCVTIMEO, (void*)&tv,
sizeof(tv));
if (result == -1)
{
WARN("setsockopt failed (%s)\n", strerror(errno));
return sock_get_error(errno);
}
return ERROR_SUCCESS;
}
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