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Sweden-Number/dlls/wininet/netconnection.c

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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#include "wine/port.h"
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
#include <sys/types.h>
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <errno.h>
#include "wine/library.h"
#include "windef.h"
#include "winbase.h"
#include "wininet.h"
#include "winerror.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"
#include "wine/debug.h"
#include "internet.h"
#include "wincrypt.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
*/
#if defined HAVE_OPENSSL_SSL_H && defined HAVE_OPENSSL_ERR_H
#include <openssl/err.h>
#ifndef SONAME_LIBSSL
#define SONAME_LIBSSL "libssl.so"
#endif
#ifndef SONAME_LIBCRYPTO
#define SONAME_LIBCRYPTO "libcrypto.so"
#endif
static void *OpenSSL_ssl_handle;
static void *OpenSSL_crypto_handle;
static SSL_METHOD *meth;
static SSL_CTX *ctx;
#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_new);
MAKE_FUNCPTR(SSL_new);
MAKE_FUNCPTR(SSL_free);
MAKE_FUNCPTR(SSL_set_fd);
MAKE_FUNCPTR(SSL_connect);
MAKE_FUNCPTR(SSL_shutdown);
MAKE_FUNCPTR(SSL_write);
MAKE_FUNCPTR(SSL_read);
MAKE_FUNCPTR(SSL_get_verify_result);
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(i2d_X509);
/* OpenSSL's libcrypto functions that we use */
MAKE_FUNCPTR(BIO_new_fp);
MAKE_FUNCPTR(ERR_get_error);
MAKE_FUNCPTR(ERR_error_string);
#undef MAKE_FUNCPTR
#endif
void NETCON_init(WININET_NETCONNECTION *connection, BOOL useSSL)
{
connection->useSSL = FALSE;
connection->socketFD = -1;
if (useSSL)
{
#if defined HAVE_OPENSSL_SSL_H && defined HAVE_OPENSSL_ERR_H
TRACE("using SSL connection\n");
if (OpenSSL_ssl_handle) /* already initilzed everything */
return;
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);
connection->useSSL = FALSE;
return;
}
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);
connection->useSSL = FALSE;
return;
}
/* 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); \
connection->useSSL = FALSE; \
return; \
}
DYNSSL(SSL_library_init);
DYNSSL(SSL_load_error_strings);
DYNSSL(SSLv23_method);
DYNSSL(SSL_CTX_new);
DYNSSL(SSL_new);
DYNSSL(SSL_free);
DYNSSL(SSL_set_fd);
DYNSSL(SSL_connect);
DYNSSL(SSL_shutdown);
DYNSSL(SSL_write);
DYNSSL(SSL_read);
DYNSSL(SSL_get_verify_result);
DYNSSL(SSL_get_peer_certificate);
DYNSSL(SSL_CTX_get_timeout);
DYNSSL(SSL_CTX_set_timeout);
DYNSSL(SSL_CTX_set_default_verify_paths);
DYNSSL(i2d_X509);
#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); \
connection->useSSL = FALSE; \
return; \
}
DYNCRYPTO(BIO_new_fp);
DYNCRYPTO(ERR_get_error);
DYNCRYPTO(ERR_error_string);
#undef DYNCRYPTO
pSSL_library_init();
pSSL_load_error_strings();
pBIO_new_fp(stderr, BIO_NOCLOSE); /* FIXME: should use winedebug stuff */
meth = pSSLv23_method();
connection->peek_msg = NULL;
connection->peek_msg_mem = NULL;
#else
FIXME("can't use SSL, not compiled in.\n");
connection->useSSL = FALSE;
#endif
}
}
BOOL NETCON_connected(WININET_NETCONNECTION *connection)
{
if (connection->socketFD == -1)
return FALSE;
else
return TRUE;
}
/* translate a unix error code into a winsock one */
static int sock_get_error( int err )
{
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;
}
}
/******************************************************************************
* NETCON_create
* Basically calls 'socket()'
*/
BOOL NETCON_create(WININET_NETCONNECTION *connection, int domain,
int type, int protocol)
{
#if defined HAVE_OPENSSL_SSL_H && defined HAVE_OPENSSL_ERR_H
if (connection->useSSL)
return FALSE;
#endif
connection->socketFD = socket(domain, type, protocol);
if (connection->socketFD == -1)
{
INTERNET_SetLastError(sock_get_error(errno));
return FALSE;
}
return TRUE;
}
/******************************************************************************
* NETCON_close
* Basically calls 'close()' unless we should use SSL
*/
BOOL NETCON_close(WININET_NETCONNECTION *connection)
{
int result;
if (!NETCON_connected(connection)) return FALSE;
#if defined HAVE_OPENSSL_SSL_H && defined HAVE_OPENSSL_ERR_H
if (connection->useSSL)
{
HeapFree(GetProcessHeap(),0,connection->peek_msg_mem);
connection->peek_msg = NULL;
connection->peek_msg_mem = NULL;
pSSL_shutdown(connection->ssl_s);
pSSL_free(connection->ssl_s);
connection->ssl_s = NULL;
connection->useSSL = FALSE;
}
#endif
result = closesocket(connection->socketFD);
connection->socketFD = -1;
if (result == -1)
{
INTERNET_SetLastError(sock_get_error(errno));
return FALSE;
}
return TRUE;
}
#if defined HAVE_OPENSSL_SSL_H && defined HAVE_OPENSSL_ERR_H
static BOOL check_hostname(X509 *cert, char *hostname)
{
/* FIXME: implement */
return TRUE;
}
#endif
/******************************************************************************
* NETCON_secure_connect
* Initiates a secure connection over an existing plaintext connection.
*/
BOOL NETCON_secure_connect(WININET_NETCONNECTION *connection, LPCWSTR hostname)
{
#if defined HAVE_OPENSSL_SSL_H && defined HAVE_OPENSSL_ERR_H
long verify_res;
X509 *cert;
int len;
char *hostname_unix;
/* can't connect if we are already connected */
if (connection->useSSL)
{
ERR("already connected\n");
return FALSE;
}
ctx = pSSL_CTX_new(meth);
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 FALSE;
}
connection->ssl_s = pSSL_new(ctx);
if (!connection->ssl_s)
{
ERR("SSL_new failed: %s\n",
pERR_error_string(pERR_get_error(), 0));
goto fail;
}
if (!pSSL_set_fd(connection->ssl_s, connection->socketFD))
{
ERR("SSL_set_fd failed: %s\n",
pERR_error_string(pERR_get_error(), 0));
goto fail;
}
if (pSSL_connect(connection->ssl_s) <= 0)
{
ERR("SSL_connect failed: %s\n",
pERR_error_string(pERR_get_error(), 0));
INTERNET_SetLastError(ERROR_INTERNET_SECURITY_CHANNEL_ERROR);
goto fail;
}
cert = pSSL_get_peer_certificate(connection->ssl_s);
if (!cert)
{
ERR("no certificate for server %s\n", debugstr_w(hostname));
/* FIXME: is this the best error? */
INTERNET_SetLastError(ERROR_INTERNET_INVALID_CA);
goto fail;
}
verify_res = pSSL_get_verify_result(connection->ssl_s);
if (verify_res != X509_V_OK)
{
ERR("couldn't verify the security of the connection, %ld\n", verify_res);
/* FIXME: we should set an error and return, but we only warn at
* the moment */
}
len = WideCharToMultiByte(CP_UNIXCP, 0, hostname, -1, NULL, 0, NULL, NULL);
hostname_unix = HeapAlloc(GetProcessHeap(), 0, len);
if (!hostname_unix)
{
INTERNET_SetLastError(ERROR_NOT_ENOUGH_MEMORY);
goto fail;
}
WideCharToMultiByte(CP_UNIXCP, 0, hostname, -1, hostname_unix, len, NULL, NULL);
if (!check_hostname(cert, hostname_unix))
{
HeapFree(GetProcessHeap(), 0, hostname_unix);
INTERNET_SetLastError(ERROR_INTERNET_SEC_CERT_CN_INVALID);
goto fail;
}
HeapFree(GetProcessHeap(), 0, hostname_unix);
connection->useSSL = TRUE;
return TRUE;
fail:
if (connection->ssl_s)
{
pSSL_shutdown(connection->ssl_s);
pSSL_free(connection->ssl_s);
connection->ssl_s = NULL;
}
#endif
return FALSE;
}
/******************************************************************************
* NETCON_connect
* Connects to the specified address.
*/
BOOL NETCON_connect(WININET_NETCONNECTION *connection, const struct sockaddr *serv_addr,
unsigned int addrlen)
{
int result;
if (!NETCON_connected(connection)) return FALSE;
result = connect(connection->socketFD, serv_addr, addrlen);
if (result == -1)
{
WARN("Unable to connect to host (%s)\n", strerror(errno));
INTERNET_SetLastError(sock_get_error(errno));
closesocket(connection->socketFD);
connection->socketFD = -1;
return FALSE;
}
return TRUE;
}
/******************************************************************************
* NETCON_send
* Basically calls 'send()' unless we should use SSL
* number of chars send is put in *sent
*/
BOOL NETCON_send(WININET_NETCONNECTION *connection, const void *msg, size_t len, int flags,
int *sent /* out */)
{
if (!NETCON_connected(connection)) return FALSE;
if (!connection->useSSL)
{
*sent = send(connection->socketFD, msg, len, flags);
if (*sent == -1)
{
INTERNET_SetLastError(sock_get_error(errno));
return FALSE;
}
return TRUE;
}
else
{
#if defined HAVE_OPENSSL_SSL_H && defined HAVE_OPENSSL_ERR_H
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 FALSE;
return TRUE;
#else
return FALSE;
#endif
}
}
/******************************************************************************
* NETCON_recv
* Basically calls 'recv()' unless we should use SSL
* number of chars received is put in *recvd
*/
BOOL NETCON_recv(WININET_NETCONNECTION *connection, void *buf, size_t len, int flags,
int *recvd /* out */)
{
if (!NETCON_connected(connection)) return FALSE;
if (!connection->useSSL)
{
*recvd = recv(connection->socketFD, buf, len, flags);
if (*recvd == -1)
{
INTERNET_SetLastError(sock_get_error(errno));
return FALSE;
}
return TRUE;
}
else
{
#if defined HAVE_OPENSSL_SSL_H && defined HAVE_OPENSSL_ERR_H
if (flags & (~MSG_PEEK))
FIXME("SSL_read does not support the following flag: %08x\n", flags);
/* this ugly hack is all for MSG_PEEK. eww gross */
if (flags & MSG_PEEK && !connection->peek_msg)
{
connection->peek_msg = connection->peek_msg_mem = HeapAlloc(GetProcessHeap(), 0, (sizeof(char) * len) + 1);
}
else if (flags & MSG_PEEK && connection->peek_msg)
{
size_t peek_msg_len = strlen(connection->peek_msg);
if (len < peek_msg_len)
FIXME("buffer isn't big enough. Do the expect us to wrap?\n");
memcpy(buf, connection->peek_msg, min(len,peek_msg_len+1));
*recvd = min(len, peek_msg_len);
return TRUE;
}
else if (connection->peek_msg)
{
size_t peek_msg_len = strlen(connection->peek_msg);
memcpy(buf, connection->peek_msg, min(len,peek_msg_len+1));
connection->peek_msg += *recvd = min(len, peek_msg_len);
if (*connection->peek_msg == '\0' || *(connection->peek_msg - 1) == '\0')
{
HeapFree(GetProcessHeap(), 0, connection->peek_msg_mem);
connection->peek_msg_mem = NULL;
connection->peek_msg = NULL;
}
return TRUE;
}
*recvd = pSSL_read(connection->ssl_s, buf, len);
if (flags & MSG_PEEK) /* must copy stuff into buffer */
{
if (!*recvd)
{
HeapFree(GetProcessHeap(), 0, connection->peek_msg_mem);
connection->peek_msg_mem = NULL;
connection->peek_msg = NULL;
}
else
{
memcpy(connection->peek_msg, buf, *recvd);
connection->peek_msg[*recvd] = '\0';
}
}
if (*recvd < 1 && len)
return FALSE;
return TRUE;
#else
return FALSE;
#endif
}
}
/******************************************************************************
* NETCON_getNextLine
*/
BOOL NETCON_getNextLine(WININET_NETCONNECTION *connection, LPSTR lpszBuffer, LPDWORD dwBuffer)
{
TRACE("\n");
if (!NETCON_connected(connection)) return FALSE;
if (!connection->useSSL)
{
struct timeval tv;
fd_set infd;
BOOL bSuccess = FALSE;
DWORD nRecv = 0;
FD_ZERO(&infd);
FD_SET(connection->socketFD, &infd);
tv.tv_sec=RESPONSE_TIMEOUT;
tv.tv_usec=0;
while (nRecv < *dwBuffer)
{
if (select(connection->socketFD+1,&infd,NULL,NULL,&tv) > 0)
{
if (recv(connection->socketFD, &lpszBuffer[nRecv], 1, 0) <= 0)
{
INTERNET_SetLastError(sock_get_error(errno));
goto lend;
}
if (lpszBuffer[nRecv] == '\n')
{
bSuccess = TRUE;
break;
}
if (lpszBuffer[nRecv] != '\r')
nRecv++;
}
else
{
INTERNET_SetLastError(ERROR_INTERNET_TIMEOUT);
goto lend;
}
}
lend: /* FIXME: don't use labels */
if (bSuccess)
{
lpszBuffer[nRecv++] = '\0';
*dwBuffer = nRecv;
TRACE(":%lu %s\n", nRecv, lpszBuffer);
return TRUE;
}
else
{
return FALSE;
}
}
else
{
#if defined HAVE_OPENSSL_SSL_H && defined HAVE_OPENSSL_ERR_H
long prev_timeout;
DWORD nRecv = 0;
BOOL success = TRUE;
prev_timeout = pSSL_CTX_get_timeout(ctx);
pSSL_CTX_set_timeout(ctx, RESPONSE_TIMEOUT);
while (nRecv < *dwBuffer)
{
int recv = 1;
if (!NETCON_recv(connection, &lpszBuffer[nRecv], 1, 0, &recv))
{
INTERNET_SetLastError(ERROR_CONNECTION_ABORTED);
success = FALSE;
}
if (lpszBuffer[nRecv] == '\n')
{
success = TRUE;
break;
}
if (lpszBuffer[nRecv] != '\r')
nRecv++;
}
pSSL_CTX_set_timeout(ctx, prev_timeout);
if (success)
{
lpszBuffer[nRecv++] = '\0';
*dwBuffer = nRecv;
TRACE("_SSL:%lu %s\n", nRecv, lpszBuffer);
return TRUE;
}
return FALSE;
#else
return FALSE;
#endif
}
}
LPCVOID NETCON_GetCert(WININET_NETCONNECTION *connection)
{
#if defined HAVE_OPENSSL_SSL_H && defined HAVE_OPENSSL_ERR_H
X509* cert;
unsigned char* buffer,*p;
INT len;
BOOL malloced = FALSE;
LPCVOID r = NULL;
if (!connection->useSSL)
return NULL;
cert = pSSL_get_peer_certificate(connection->ssl_s);
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 = HeapAlloc(GetProcessHeap(),0,len);
p = buffer;
len = pi2d_X509(cert,&p);
}
else
{
buffer = p;
malloced = TRUE;
}
r = CertCreateCertificateContext(X509_ASN_ENCODING,buffer,len);
if (malloced)
free(buffer);
else
HeapFree(GetProcessHeap(),0,buffer);
return r;
#else
return NULL;
#endif
}
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