os_abstraction.h

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00001 /* $Id: os_abstraction.h 20030 2010-06-28 18:14:00Z michi_cc $ */
00002 
00003 /*
00004  * This file is part of OpenTTD.
00005  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
00006  * OpenTTD 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.
00007  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
00008  */
00009 
00016 #ifndef NETWORK_CORE_OS_ABSTRACTION_H
00017 #define NETWORK_CORE_OS_ABSTRACTION_H
00018 
00019 /* Include standard stuff per OS */
00020 
00021 #ifdef ENABLE_NETWORK
00022 
00023 /* Windows stuff */
00024 #if defined(WIN32) || defined(WIN64)
00025 #include <errno.h>
00026 #include <winsock2.h>
00027 #include <ws2tcpip.h>
00028 #include <windows.h>
00029 
00030 #define GET_LAST_ERROR() WSAGetLastError()
00031 #undef EWOULDBLOCK
00032 #define EWOULDBLOCK WSAEWOULDBLOCK
00033 /* Windows has some different names for some types */
00034 typedef unsigned long in_addr_t;
00035 
00036 #if !(defined(__MINGW32__) || defined(__CYGWIN__))
00037   /* Windows has some different names for some types */
00038   typedef SSIZE_T ssize_t;
00039   typedef int socklen_t;
00040 # define IPPROTO_IPV6 41
00041 #else
00042 #include "../../os/windows/win32.h"
00043 #include "../../core/alloc_func.hpp"
00044 
00045 #define AI_ADDRCONFIG   0x00000400  /* Resolution only if global address configured */
00046 #define IPV6_V6ONLY 27
00047 
00048 static inline int OTTDgetnameinfo(const struct sockaddr *sa, socklen_t salen, char *host, DWORD hostlen, char *serv, DWORD servlen, int flags)
00049 {
00050   static int (WINAPI *getnameinfo)(const struct sockaddr *, socklen_t, char *, DWORD, char *, DWORD, int) = NULL;
00051   static bool first_time = true;
00052 
00053   if (first_time) {
00054     LoadLibraryList((Function*)&getnameinfo, "ws2_32.dll\0getnameinfo\0\0");
00055     first_time = false;
00056   }
00057 
00058   if (getnameinfo != NULL) return getnameinfo(sa, salen, host, hostlen, serv, servlen, flags);
00059 
00060   strncpy(host, inet_ntoa(((struct sockaddr_in *)sa)->sin_addr), hostlen);
00061   return 0;
00062 }
00063 #define getnameinfo OTTDgetnameinfo
00064 
00065 static inline int OTTDgetaddrinfo(const char *nodename, const char *servname, const struct addrinfo *hints, struct addrinfo **res)
00066 {
00067   static int (WINAPI *getaddrinfo)(const char *, const char *, const struct addrinfo *, struct addrinfo **) = NULL;
00068   static bool first_time = true;
00069 
00070   if (first_time) {
00071     LoadLibraryList((Function*)&getaddrinfo, "ws2_32.dll\0getaddrinfo\0\0");
00072     first_time = false;
00073   }
00074 
00075   if (getaddrinfo != NULL) return getaddrinfo(nodename, servname, hints, res);
00076 
00077   *res = NULL;
00078 
00079   in_addr_t ip = inet_addr(nodename);
00080   if (ip == INADDR_NONE) {
00081     struct hostent *he = gethostbyname(nodename);
00082     if (he == NULL) return EAI_NONAME;
00083     ip = (*(struct in_addr *)he->h_addr).s_addr;
00084   }
00085 
00086   struct sockaddr_in *sin = CallocT<struct sockaddr_in>(1);
00087   sin->sin_family = AF_INET;
00088   sin->sin_port = htons(strtoul(servname, NULL, 10));
00089   sin->sin_addr.s_addr = ip;
00090 
00091   struct addrinfo *ai = CallocT<struct addrinfo>(1);
00092   ai->ai_family = PF_INET;
00093   ai->ai_addr = (struct sockaddr*)sin;
00094   ai->ai_addrlen = sizeof(*sin);
00095   ai->ai_socktype = hints->ai_socktype;
00096 
00097   *res = ai;
00098   return 0;
00099 }
00100 #define getaddrinfo OTTDgetaddrinfo
00101 
00102 static inline void OTTDfreeaddrinfo(struct addrinfo *ai)
00103 {
00104   static int (WINAPI *freeaddrinfo)(struct addrinfo *) = NULL;
00105   static bool first_time = true;
00106 
00107   if (ai == NULL) return;
00108 
00109   if (first_time) {
00110     LoadLibraryList((Function*)&freeaddrinfo, "ws2_32.dll\0freeaddrinfo\0\0");
00111     first_time = false;
00112   }
00113 
00114   if (freeaddrinfo != NULL) {
00115     freeaddrinfo(ai);
00116     return;
00117   }
00118 
00119   do {
00120     struct addrinfo *next = ai->ai_next;
00121     free(ai->ai_addr);
00122     free(ai);
00123     ai = next;
00124   } while (ai != NULL);
00125 }
00126 #define freeaddrinfo OTTDfreeaddrinfo
00127 #endif /* __MINGW32__ && __CYGWIN__ */
00128 #endif /* WIN32 */
00129 
00130 /* UNIX stuff */
00131 #if defined(UNIX) && !defined(__OS2__)
00132 # if defined(OPENBSD) || defined(__NetBSD__)
00133 #   define AI_ADDRCONFIG 0
00134 # endif
00135 # define SOCKET int
00136 # define INVALID_SOCKET -1
00137 # if !defined(__MORPHOS__) && !defined(__AMIGA__)
00138 #   define ioctlsocket ioctl
00139 # if !defined(BEOS_NET_SERVER)
00140 #   define closesocket close
00141 # endif
00142 #   define GET_LAST_ERROR() (errno)
00143 # endif
00144 /* Need this for FIONREAD on solaris */
00145 # define BSD_COMP
00146 
00147 /* Includes needed for UNIX-like systems */
00148 # include <unistd.h>
00149 # include <sys/ioctl.h>
00150 # if defined(__BEOS__) && defined(BEOS_NET_SERVER)
00151 #   include <be/net/socket.h>
00152 #   include <be/kernel/OS.h> /* snooze() */
00153 #   include <be/net/netdb.h>
00154     typedef unsigned long in_addr_t;
00155 #   define INADDR_NONE INADDR_BROADCAST
00156 # else
00157 #   include <sys/socket.h>
00158 #   include <netinet/in.h>
00159 #   include <netinet/tcp.h>
00160 #   include <arpa/inet.h>
00161 #   include <net/if.h>
00162 /* According to glibc/NEWS, <ifaddrs.h> appeared in glibc-2.3. */
00163 #   if !defined(__sgi__) && !defined(SUNOS) && !defined(__MORPHOS__) && !defined(__BEOS__) && !defined(__HAIKU__) && !defined(__INNOTEK_LIBC__) \
00164        && !(defined(__GLIBC__) && (__GLIBC__ <= 2) && (__GLIBC_MINOR__ <= 2)) && !defined(__dietlibc__) && !defined(HPUX)
00165 /* If for any reason ifaddrs.h does not exist on your system, comment out
00166  *   the following two lines and an alternative way will be used to fetch
00167  *   the list of IPs from the system. */
00168 #     include <ifaddrs.h>
00169 #     define HAVE_GETIFADDRS
00170 #   endif
00171 #   if !defined(INADDR_NONE)
00172 #     define INADDR_NONE 0xffffffff
00173 #   endif
00174 #   if defined(__BEOS__) && !defined(BEOS_NET_SERVER)
00175       /* needed on Zeta */
00176 #     include <sys/sockio.h>
00177 #   endif
00178 # endif /* BEOS_NET_SERVER */
00179 
00180 # if !defined(__BEOS__) && defined(__GLIBC__) && (__GLIBC__ <= 2) && (__GLIBC_MINOR__ <= 1)
00181     typedef uint32_t in_addr_t;
00182 # endif
00183 
00184 # include <errno.h>
00185 # include <sys/time.h>
00186 # include <netdb.h>
00187 #endif /* UNIX */
00188 
00189 #ifdef __BEOS__
00190   typedef int socklen_t;
00191 #endif
00192 
00193 #ifdef __HAIKU__
00194   #define IPV6_V6ONLY 27
00195 #endif
00196 
00197 #if defined(PSP)
00198 # include <sys/socket.h>
00199 # include <netinet/in.h>
00200 # include <arpa/inet.h>
00201 # include <pspnet.h>
00202 # include <pspnet_inet.h>
00203 # include <pspnet_apctl.h>
00204 # include <pspnet_resolver.h>
00205 # include <errno.h>
00206 # include <unistd.h>
00207 # include <sys/select.h>
00208 # include <sys/time.h>
00209 # include <sys/fd_set.h>
00210 
00211 # define TCP_NODELAY 1
00212 # define SO_NONBLOCK 0x1009
00213 # define SOCKET int
00214 # define INVALID_SOCKET -1
00215 # define INADDR_NONE 0xffffffff
00216 # define closesocket close
00217 # define GET_LAST_ERROR() sceNetInetGetErrno()
00218 #endif /* PSP */
00219 
00220 /* OS/2 stuff */
00221 #if defined(__OS2__)
00222 # define SOCKET int
00223 # define INVALID_SOCKET -1
00224 # define ioctlsocket ioctl
00225 # define closesocket close
00226 # define GET_LAST_ERROR() (sock_errno())
00227 
00228 /* Includes needed for OS/2 systems */
00229 # include <types.h>
00230 # include <unistd.h>
00231 # include <sys/ioctl.h>
00232 # include <sys/socket.h>
00233 # include <netinet/in.h>
00234 # include <netinet/tcp.h>
00235 # include <arpa/inet.h>
00236 # include <net/if.h>
00237 # include <errno.h>
00238 # include <sys/time.h>
00239 # include <netdb.h>
00240 # include <nerrno.h>
00241 # define INADDR_NONE 0xffffffff
00242 
00243 typedef int socklen_t;
00244 #if !defined(__INNOTEK_LIBC__)
00245 typedef unsigned long in_addr_t;
00246 #endif /* __INNOTEK_LIBC__ */
00247 #endif /* OS/2 */
00248 
00249 /* MorphOS and Amiga stuff */
00250 #if defined(__MORPHOS__) || defined(__AMIGA__)
00251 # include <exec/types.h>
00252 # include <proto/exec.h>   /* required for Open/CloseLibrary() */
00253   /* MorphOS defines his network functions with UBYTE arrays while we
00254    *  use char arrays. This gives tons of unneeded warnings */
00255 # define UBYTE char
00256 # if defined(__MORPHOS__)
00257 #   include <sys/filio.h>  /* FIO* defines */
00258 #   include <sys/sockio.h> /* SIO* defines */
00259 #   include <netinet/in.h>
00260 # else /* __AMIGA__ */
00261 #   include <proto/socket.h>
00262 # endif
00263 
00264 /* Make the names compatible */
00265 # define closesocket(s) CloseSocket(s)
00266 # define GET_LAST_ERROR() Errno()
00267 # define ioctlsocket(s, request, status) IoctlSocket((LONG)s, (ULONG)request, (char*)status)
00268 # define ioctl ioctlsocket
00269 
00270   typedef unsigned int in_addr_t;
00271   typedef long         socklen_t;
00272   extern struct Library *SocketBase;
00273 
00274 # ifdef __AMIGA__
00275   /* for usleep() implementation */
00276   extern struct Device      *TimerBase;
00277   extern struct MsgPort     *TimerPort;
00278   extern struct timerequest *TimerRequest;
00279 # endif
00280 #endif /* __MORPHOS__ || __AMIGA__ */
00281 
00282 static inline bool SetNonBlocking(SOCKET d)
00283 {
00284 #ifdef WIN32
00285   u_long nonblocking = 1;
00286 #else
00287   int nonblocking = 1;
00288 #endif
00289 #if (defined(__BEOS__) && defined(BEOS_NET_SERVER)) || defined(PSP)
00290   return setsockopt(d, SOL_SOCKET, SO_NONBLOCK, &nonblocking, sizeof(nonblocking)) == 0;
00291 #else
00292   return ioctlsocket(d, FIONBIO, &nonblocking) == 0;
00293 #endif
00294 }
00295 
00296 static inline bool SetNoDelay(SOCKET d)
00297 {
00298   /* XXX should this be done at all? */
00299 #if !defined(BEOS_NET_SERVER) /* not implemented on BeOS net_server */
00300   int b = 1;
00301   /* The (const char*) cast is needed for windows */
00302   return setsockopt(d, IPPROTO_TCP, TCP_NODELAY, (const char*)&b, sizeof(b)) == 0;
00303 #else
00304   return true;
00305 #endif
00306 }
00307 
00308 /* Make sure these structures have the size we expect them to be */
00309 assert_compile(sizeof(in_addr)  ==  4);
00310 assert_compile(sizeof(in6_addr) == 16);
00311 
00312 #endif /* ENABLE_NETWORK */
00313 
00314 #endif /* NETWORK_CORE_OS_ABSTRACTION_H */

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