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Sweden-Number/dlls/winhttp/net.c

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/*
* Copyright 2008 Hans Leidekker for CodeWeavers
*
* 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"
#include <stdarg.h>
#include <stdio.h>
#include <errno.h>
#include <sys/types.h>
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#ifdef HAVE_SYS_IOCTL_H
# include <sys/ioctl.h>
#endif
#ifdef HAVE_SYS_FILIO_H
# include <sys/filio.h>
#endif
#ifdef HAVE_POLL_H
# include <poll.h>
#endif
#ifdef HAVE_OPENSSL_SSL_H
# include <openssl/ssl.h>
#undef FAR
#undef DSA
#endif
#include "wine/debug.h"
#include "wine/library.h"
#include "windef.h"
#include "winbase.h"
#include "winhttp.h"
#include "wincrypt.h"
#include "winhttp_private.h"
/* to avoid conflicts with the Unix socket headers */
#define USE_WS_PREFIX
#include "winsock2.h"
WINE_DEFAULT_DEBUG_CHANNEL(winhttp);
#define DEFAULT_SEND_TIMEOUT 30
#define DEFAULT_RECEIVE_TIMEOUT 30
#ifndef HAVE_GETADDRINFO
/* critical section to protect non-reentrant gethostbyname() */
static CRITICAL_SECTION cs_gethostbyname;
static CRITICAL_SECTION_DEBUG critsect_debug =
{
0, 0, &cs_gethostbyname,
{ &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
0, 0, { (DWORD_PTR)(__FILE__ ": cs_gethostbyname") }
};
static CRITICAL_SECTION cs_gethostbyname = { &critsect_debug, -1, 0, 0, 0, 0 };
#endif
#ifdef SONAME_LIBSSL
#include <openssl/err.h>
static void *libssl_handle;
static void *libcrypto_handle;
static SSL_METHOD *method;
static SSL_CTX *ctx;
#define MAKE_FUNCPTR(f) static typeof(f) * p##f
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( BIO_new_fp );
MAKE_FUNCPTR( ERR_get_error );
MAKE_FUNCPTR( ERR_error_string );
MAKE_FUNCPTR( i2d_X509 );
#undef MAKE_FUNCPTR
#endif
/* translate a unix error code into a winsock error code */
static 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;
}
BOOL netconn_init( netconn_t *conn, BOOL secure )
{
conn->socket = -1;
if (!secure) return TRUE;
#if defined(SONAME_LIBSSL) && defined(SONAME_LIBCRYPTO)
if (libssl_handle) return TRUE;
if (!(libssl_handle = wine_dlopen( SONAME_LIBSSL, RTLD_NOW, NULL, 0 )))
{
ERR("Trying to use SSL but couldn't load %s. Expect trouble.\n", SONAME_LIBSSL);
set_last_error( ERROR_WINHTTP_SECURE_CHANNEL_ERROR );
return FALSE;
}
if (!(libcrypto_handle = wine_dlopen( SONAME_LIBCRYPTO, RTLD_NOW, NULL, 0 )))
{
ERR("Trying to use SSL but couldn't load %s. Expect trouble.\n", SONAME_LIBCRYPTO);
set_last_error( ERROR_WINHTTP_SECURE_CHANNEL_ERROR );
return FALSE;
}
#define LOAD_FUNCPTR(x) \
if (!(p##x = wine_dlsym( libssl_handle, #x, NULL, 0 ))) \
{ \
ERR("Failed to load symbol %s\n", #x); \
set_last_error( ERROR_WINHTTP_SECURE_CHANNEL_ERROR ); \
return FALSE; \
}
LOAD_FUNCPTR( SSL_library_init );
LOAD_FUNCPTR( SSL_load_error_strings );
LOAD_FUNCPTR( SSLv23_method );
LOAD_FUNCPTR( SSL_CTX_new );
LOAD_FUNCPTR( SSL_new );
LOAD_FUNCPTR( SSL_free );
LOAD_FUNCPTR( SSL_set_fd );
LOAD_FUNCPTR( SSL_connect );
LOAD_FUNCPTR( SSL_shutdown );
LOAD_FUNCPTR( SSL_write );
LOAD_FUNCPTR( SSL_read );
LOAD_FUNCPTR( SSL_get_verify_result );
LOAD_FUNCPTR( SSL_get_peer_certificate );
LOAD_FUNCPTR( SSL_CTX_get_timeout );
LOAD_FUNCPTR( SSL_CTX_set_timeout );
LOAD_FUNCPTR( SSL_CTX_set_default_verify_paths );
#undef LOAD_FUNCPTR
#define LOAD_FUNCPTR(x) \
if (!(p##x = wine_dlsym( libcrypto_handle, #x, NULL, 0 ))) \
{ \
ERR("Failed to load symbol %s\n", #x); \
set_last_error( ERROR_WINHTTP_SECURE_CHANNEL_ERROR ); \
return FALSE; \
}
LOAD_FUNCPTR( BIO_new_fp );
LOAD_FUNCPTR( ERR_get_error );
LOAD_FUNCPTR( ERR_error_string );
LOAD_FUNCPTR( i2d_X509 );
#undef LOAD_FUNCPTR
pSSL_library_init();
pSSL_load_error_strings();
pBIO_new_fp( stderr, BIO_NOCLOSE );
method = pSSLv23_method();
#else
WARN("SSL support not compiled in.\n");
set_last_error( ERROR_WINHTTP_SECURE_CHANNEL_ERROR );
return FALSE;
#endif
return TRUE;
}
BOOL netconn_connected( netconn_t *conn )
{
return (conn->socket != -1);
}
BOOL netconn_create( netconn_t *conn, int domain, int type, int protocol )
{
if ((conn->socket = socket( domain, type, protocol )) == -1)
{
WARN("unable to create socket (%s)\n", strerror(errno));
set_last_error( sock_get_error( errno ) );
return FALSE;
}
return TRUE;
}
BOOL netconn_close( netconn_t *conn )
{
int res;
#ifdef SONAME_LIBSSL
if (conn->secure)
{
heap_free( conn->peek_msg_mem );
conn->peek_msg_mem = NULL;
conn->peek_msg = NULL;
conn->peek_len = 0;
pSSL_shutdown( conn->ssl_conn );
pSSL_free( conn->ssl_conn );
conn->ssl_conn = NULL;
conn->secure = FALSE;
}
#endif
res = closesocket( conn->socket );
conn->socket = -1;
if (res == -1)
{
set_last_error( sock_get_error( errno ) );
return FALSE;
}
return TRUE;
}
BOOL netconn_connect( netconn_t *conn, const struct sockaddr *sockaddr, unsigned int addr_len )
{
if (connect( conn->socket, sockaddr, addr_len ) == -1)
{
WARN("unable to connect to host (%s)\n", strerror(errno));
set_last_error( sock_get_error( errno ) );
return FALSE;
}
return TRUE;
}
BOOL netconn_secure_connect( netconn_t *conn )
{
#ifdef SONAME_LIBSSL
X509 *cert;
long res;
ctx = pSSL_CTX_new( method );
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 ));
set_last_error( ERROR_OUTOFMEMORY );
return FALSE;
}
if (!(conn->ssl_conn = pSSL_new( ctx )))
{
ERR("SSL_new failed: %s\n", pERR_error_string( pERR_get_error(), 0 ));
set_last_error( ERROR_OUTOFMEMORY );
goto fail;
}
if (!pSSL_set_fd( conn->ssl_conn, conn->socket ))
{
ERR("SSL_set_fd failed: %s\n", pERR_error_string( pERR_get_error(), 0 ));
set_last_error( ERROR_WINHTTP_SECURE_CHANNEL_ERROR );
goto fail;
}
if (pSSL_connect( conn->ssl_conn ) <= 0)
{
ERR("SSL_connect failed: %s\n", pERR_error_string( pERR_get_error(), 0 ));
set_last_error( ERROR_WINHTTP_SECURE_CHANNEL_ERROR );
goto fail;
}
if (!(cert = pSSL_get_peer_certificate( conn->ssl_conn )))
{
ERR("No certificate for server: %s\n", pERR_error_string( pERR_get_error(), 0 ));
set_last_error( ERROR_WINHTTP_SECURE_CHANNEL_ERROR );
goto fail;
}
if ((res = pSSL_get_verify_result( conn->ssl_conn )) != X509_V_OK)
{
/* FIXME: we should set an error and return, but we only print an error at the moment */
ERR("couldn't verify server certificate (%ld)\n", res);
}
TRACE("established SSL connection\n");
conn->secure = TRUE;
return TRUE;
fail:
if (conn->ssl_conn)
{
pSSL_shutdown( conn->ssl_conn );
pSSL_free( conn->ssl_conn );
conn->ssl_conn = NULL;
}
#endif
return FALSE;
}
BOOL netconn_send( netconn_t *conn, const void *msg, size_t len, int flags, int *sent )
{
if (!netconn_connected( conn )) return FALSE;
if (conn->secure)
{
#ifdef SONAME_LIBSSL
if (flags) FIXME("SSL_write doesn't support any flags (%08x)\n", flags);
*sent = pSSL_write( conn->ssl_conn, msg, len );
if (*sent < 1 && len) return FALSE;
return TRUE;
#else
return FALSE;
#endif
}
if ((*sent = send( conn->socket, msg, len, flags )) == -1)
{
set_last_error( sock_get_error( errno ) );
return FALSE;
}
return TRUE;
}
BOOL netconn_recv( netconn_t *conn, void *buf, size_t len, int flags, int *recvd )
{
*recvd = 0;
if (!netconn_connected( conn )) return FALSE;
if (!len) return TRUE;
if (conn->secure)
{
#ifdef SONAME_LIBSSL
if (flags & ~(MSG_PEEK | MSG_WAITALL))
FIXME("SSL_read does not support the following flags: %08x\n", flags);
/* this ugly hack is all for MSG_PEEK */
if (flags & MSG_PEEK && !conn->peek_msg)
{
if (!(conn->peek_msg = conn->peek_msg_mem = heap_alloc( len + 1 ))) return FALSE;
}
else if (flags & MSG_PEEK && conn->peek_msg)
{
if (len < conn->peek_len) FIXME("buffer isn't big enough, should we wrap?\n");
*recvd = min( len, conn->peek_len );
memcpy( buf, conn->peek_msg, *recvd );
return TRUE;
}
else if (conn->peek_msg)
{
*recvd = min( len, conn->peek_len );
memcpy( buf, conn->peek_msg, *recvd );
conn->peek_len -= *recvd;
conn->peek_msg += *recvd;
if (conn->peek_len == 0)
{
heap_free( conn->peek_msg_mem );
conn->peek_msg_mem = NULL;
conn->peek_msg = NULL;
}
/* check if we have enough data from the peek buffer */
if (!(flags & MSG_WAITALL) || (*recvd == len)) return TRUE;
}
*recvd += pSSL_read( conn->ssl_conn, (char *)buf + *recvd, len - *recvd );
if (flags & MSG_PEEK) /* must copy into buffer */
{
conn->peek_len = *recvd;
if (!*recvd)
{
heap_free( conn->peek_msg_mem );
conn->peek_msg_mem = NULL;
conn->peek_msg = NULL;
}
else memcpy( conn->peek_msg, buf, *recvd );
}
if (*recvd < 1 && len) return FALSE;
return TRUE;
#else
return FALSE;
#endif
}
if ((*recvd = recv( conn->socket, buf, len, flags )) == -1)
{
set_last_error( sock_get_error( errno ) );
return FALSE;
}
return TRUE;
}
BOOL netconn_query_data_available( netconn_t *conn, DWORD *available )
{
#ifdef FIONREAD
int ret, unread;
#endif
*available = 0;
if (!netconn_connected( conn )) return FALSE;
if (conn->secure)
{
#ifdef SONAME_LIBSSL
if (conn->peek_msg) *available = conn->peek_len;
#endif
return TRUE;
}
#ifdef FIONREAD
if (!(ret = ioctlsocket( conn->socket, FIONREAD, &unread ))) *available = unread;
#endif
return TRUE;
}
BOOL netconn_get_next_line( netconn_t *conn, char *buffer, DWORD *buflen )
{
struct pollfd pfd;
BOOL ret = FALSE;
DWORD recvd = 0;
if (!netconn_connected( conn )) return FALSE;
if (conn->secure)
{
#ifdef SONAME_LIBSSL
long timeout;
timeout = pSSL_CTX_get_timeout( ctx );
pSSL_CTX_set_timeout( ctx, DEFAULT_RECEIVE_TIMEOUT );
while (recvd < *buflen)
{
int dummy;
if (!netconn_recv( conn, &buffer[recvd], 1, 0, &dummy ))
{
set_last_error( ERROR_CONNECTION_ABORTED );
break;
}
if (buffer[recvd] == '\n')
{
ret = TRUE;
break;
}
if (buffer[recvd] != '\r') recvd++;
}
pSSL_CTX_set_timeout( ctx, timeout );
if (ret)
{
buffer[recvd++] = 0;
*buflen = recvd;
TRACE("received line %s\n", debugstr_a(buffer));
}
return ret;
#else
return FALSE;
#endif
}
pfd.fd = conn->socket;
pfd.events = POLLIN;
while (recvd < *buflen)
{
if (poll( &pfd, 1, DEFAULT_RECEIVE_TIMEOUT * 1000 ) > 0)
{
int res;
if ((res = recv( conn->socket, &buffer[recvd], 1, 0 )) <= 0)
{
if (res == -1) set_last_error( sock_get_error( errno ) );
break;
}
if (buffer[recvd] == '\n')
{
ret = TRUE;
break;
}
if (buffer[recvd] != '\r') recvd++;
}
else
{
set_last_error( ERROR_WINHTTP_TIMEOUT );
break;
}
}
if (ret)
{
buffer[recvd++] = 0;
*buflen = recvd;
TRACE("received line %s\n", debugstr_a(buffer));
}
return ret;
}
DWORD netconn_set_timeout( netconn_t *netconn, BOOL send, int value )
{
int res;
struct timeval tv;
/* value is in milliseconds, convert to struct timeval */
tv.tv_sec = value / 1000;
tv.tv_usec = (value % 1000) * 1000;
if ((res = setsockopt( netconn->socket, SOL_SOCKET, send ? SO_SNDTIMEO : SO_RCVTIMEO, (void*)&tv, sizeof(tv) ) == -1))
{
WARN("setsockopt failed (%s)\n", strerror( errno ));
return sock_get_error( errno );
}
return ERROR_SUCCESS;
}
BOOL netconn_resolve( WCHAR *hostnameW, INTERNET_PORT port, struct sockaddr_in *sa )
{
char *hostname;
#ifdef HAVE_GETADDRINFO
struct addrinfo *res, hints;
int ret;
#else
struct hostent *he;
#endif
if (!(hostname = strdupWA( hostnameW ))) return FALSE;
#ifdef HAVE_GETADDRINFO
memset( &hints, 0, sizeof(struct addrinfo) );
hints.ai_family = AF_INET;
ret = getaddrinfo( hostname, NULL, &hints, &res );
heap_free( hostname );
if (ret != 0)
{
TRACE("failed to get address of %s (%s)\n", debugstr_w(hostnameW), gai_strerror(ret));
return FALSE;
}
memset( sa, 0, sizeof(struct sockaddr_in) );
memcpy( &sa->sin_addr, &((struct sockaddr_in *)res->ai_addr)->sin_addr, sizeof(struct in_addr) );
sa->sin_family = res->ai_family;
sa->sin_port = htons( port );
freeaddrinfo( res );
#else
EnterCriticalSection( &cs_gethostbyname );
he = gethostbyname( hostname );
heap_free( hostname );
if (!he)
{
TRACE("failed to get address of %s (%d)\n", debugstr_w(hostnameW), h_errno);
LeaveCriticalSection( &cs_gethostbyname );
return FALSE;
}
memset( sa, 0, sizeof(struct sockaddr_in) );
memcpy( &sa->sin_addr, he->h_addr, he->h_length );
sa->sin_family = he->h_addrtype;
sa->sin_port = htons( port );
LeaveCriticalSection( &cs_gethostbyname );
#endif
return TRUE;
}
const void *netconn_get_certificate( netconn_t *conn )
{
#ifdef SONAME_LIBSSL
X509 *cert;
unsigned char *buffer, *p;
int len;
BOOL malloc = FALSE;
const CERT_CONTEXT *ret;
if (!conn->secure) return NULL;
if (!(cert = pSSL_get_peer_certificate( conn->ssl_conn ))) return NULL;
p = NULL;
if ((len = pi2d_X509( cert, &p )) < 0) return NULL;
/*
* 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)
{
if (!(buffer = heap_alloc( len ))) return NULL;
p = buffer;
len = pi2d_X509( cert, &p );
}
else
{
buffer = p;
malloc = TRUE;
}
ret = CertCreateCertificateContext( X509_ASN_ENCODING, buffer, len );
if (malloc) free( buffer );
else heap_free( buffer );
return ret;
#else
return NULL;
#endif
}
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