os_abstraction.h

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00001 /* $Id: os_abstraction.h 17606 2009-09-21 18:36:33Z rubidium $ */
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 <winsock2.h>
00026 #include <ws2tcpip.h>
00027 #include <windows.h>
00028 
00029 #define GET_LAST_ERROR() WSAGetLastError()
00030 #define EWOULDBLOCK WSAEWOULDBLOCK
00031 /* Windows has some different names for some types */
00032 typedef unsigned long in_addr_t;
00033 
00034 #if !(defined(__MINGW32__) || defined(__CYGWIN__))
00035   /* Windows has some different names for some types */
00036   typedef SSIZE_T ssize_t;
00037   typedef int socklen_t;
00038 # define IPPROTO_IPV6 41
00039 #else
00040 #include "../../os/windows/win32.h"
00041 #include "../../core/alloc_func.hpp"
00042 
00043 #define AI_ADDRCONFIG   0x00000400  // Resolution only if global address configured
00044 #define IPV6_V6ONLY 27
00045 
00046 static inline int OTTDgetnameinfo(const struct sockaddr *sa, socklen_t salen, char *host, DWORD hostlen, char *serv, DWORD servlen, int flags)
00047 {
00048   static int (WINAPI *getnameinfo)(const struct sockaddr *, socklen_t, char *, DWORD, char *, DWORD, int) = NULL;
00049   static bool first_time = true;
00050 
00051   if (first_time) {
00052     LoadLibraryList((Function*)&getnameinfo, "ws2_32.dll\0getnameinfo\0\0");
00053     first_time = false;
00054   }
00055 
00056   if (getnameinfo != NULL) return getnameinfo(sa, salen, host, hostlen, serv, servlen, flags);
00057 
00058   strncpy(host, inet_ntoa(((struct sockaddr_in *)sa)->sin_addr), hostlen);
00059   return 0;
00060 }
00061 #define getnameinfo OTTDgetnameinfo
00062 
00063 static inline int OTTDgetaddrinfo(const char *nodename, const char *servname, const struct addrinfo *hints, struct addrinfo **res)
00064 {
00065   static int (WINAPI *getaddrinfo)(const char *, const char *, const struct addrinfo *, struct addrinfo **) = NULL;
00066   static bool first_time = true;
00067 
00068   if (first_time) {
00069     LoadLibraryList((Function*)&getaddrinfo, "ws2_32.dll\0getaddrinfo\0\0");
00070     first_time = false;
00071   }
00072 
00073   if (getaddrinfo != NULL) return getaddrinfo(nodename, servname, hints, res);
00074 
00075   *res = NULL;
00076 
00077   in_addr_t ip = inet_addr(nodename);
00078   if (ip == INADDR_NONE) {
00079     struct hostent *he = gethostbyname(nodename);
00080     if (he == NULL) return EAI_NONAME;
00081     ip = (*(struct in_addr *)he->h_addr).s_addr;
00082   }
00083 
00084   struct sockaddr_in *sin = CallocT<struct sockaddr_in>(1);
00085   sin->sin_family = AF_INET;
00086   sin->sin_port = htons(strtoul(servname, NULL, 10));
00087   sin->sin_addr.s_addr = ip;
00088 
00089   struct addrinfo *ai = CallocT<struct addrinfo>(1);
00090   ai->ai_family = PF_INET;
00091   ai->ai_addr = (struct sockaddr*)sin;
00092   ai->ai_addrlen = sizeof(*sin);
00093   ai->ai_socktype = hints->ai_socktype;
00094 
00095   *res = ai;
00096   return 0;
00097 }
00098 #define getaddrinfo OTTDgetaddrinfo
00099 
00100 static inline void OTTDfreeaddrinfo(struct addrinfo *ai)
00101 {
00102   static int (WINAPI *freeaddrinfo)(struct addrinfo *) = NULL;
00103   static bool first_time = true;
00104 
00105   if (ai == NULL) return;
00106 
00107   if (first_time) {
00108     LoadLibraryList((Function*)&freeaddrinfo, "ws2_32.dll\0freeaddrinfo\0\0");
00109     first_time = false;
00110   }
00111 
00112   if (freeaddrinfo != NULL) {
00113     freeaddrinfo(ai);
00114     return;
00115   }
00116 
00117   do {
00118     struct addrinfo *next = ai->ai_next;
00119     free(ai->ai_addr);
00120     free(ai);
00121     ai = next;
00122   } while (ai != NULL);
00123 }
00124 #define freeaddrinfo OTTDfreeaddrinfo
00125 #endif /* __MINGW32__ && __CYGWIN__ */
00126 #endif /* WIN32 */
00127 
00128 /* UNIX stuff */
00129 #if defined(UNIX) && !defined(__OS2__)
00130 # define SOCKET int
00131 # define INVALID_SOCKET -1
00132 # if !defined(__MORPHOS__) && !defined(__AMIGA__)
00133 #   define ioctlsocket ioctl
00134 # if !defined(BEOS_NET_SERVER)
00135 #   define closesocket close
00136 # endif
00137 #   define GET_LAST_ERROR() (errno)
00138 # endif
00139 /* Need this for FIONREAD on solaris */
00140 # define BSD_COMP
00141 
00142 /* Includes needed for UNIX-like systems */
00143 # include <unistd.h>
00144 # include <sys/ioctl.h>
00145 # if defined(__BEOS__) && defined(BEOS_NET_SERVER)
00146 #   include <be/net/socket.h>
00147 #   include <be/kernel/OS.h> /* snooze() */
00148 #   include <be/net/netdb.h>
00149     typedef unsigned long in_addr_t;
00150 #   define INADDR_NONE INADDR_BROADCAST
00151 # else
00152 #   include <sys/socket.h>
00153 #   include <netinet/in.h>
00154 #   include <netinet/tcp.h>
00155 #   include <arpa/inet.h>
00156 #   include <net/if.h>
00157 /* According to glibc/NEWS, <ifaddrs.h> appeared in glibc-2.3. */
00158 #   if !defined(__sgi__) && !defined(SUNOS) && !defined(__MORPHOS__) && !defined(__BEOS__) && !defined(__HAIKU__) && !defined(__INNOTEK_LIBC__) \
00159        && !(defined(__GLIBC__) && (__GLIBC__ <= 2) && (__GLIBC_MINOR__ <= 2)) && !defined(__dietlibc__) && !defined(HPUX)
00160 /* If for any reason ifaddrs.h does not exist on your system, comment out
00161  *   the following two lines and an alternative way will be used to fetch
00162  *   the list of IPs from the system. */
00163 #     include <ifaddrs.h>
00164 #     define HAVE_GETIFADDRS
00165 #   endif
00166 #   if !defined(INADDR_NONE)
00167 #     define INADDR_NONE 0xffffffff
00168 #   endif
00169 #   if defined(__BEOS__) && !defined(BEOS_NET_SERVER)
00170       /* needed on Zeta */
00171 #     include <sys/sockio.h>
00172 #   endif
00173 # endif /* BEOS_NET_SERVER */
00174 
00175 # if !defined(__BEOS__) && defined(__GLIBC__) && (__GLIBC__ <= 2) && (__GLIBC_MINOR__ <= 1)
00176     typedef uint32_t in_addr_t;
00177 # endif
00178 
00179 # include <errno.h>
00180 # include <sys/time.h>
00181 # include <netdb.h>
00182 #endif /* UNIX */
00183 
00184 #ifdef __BEOS__
00185   typedef int socklen_t;
00186 #endif
00187 
00188 #ifdef __HAIKU__
00189   #define IPV6_V6ONLY 27
00190 #endif
00191 
00192 #if defined(PSP)
00193 # include <sys/socket.h>
00194 # include <netinet/in.h>
00195 # include <arpa/inet.h>
00196 # include <pspnet.h>
00197 # include <pspnet_inet.h>
00198 # include <pspnet_apctl.h>
00199 # include <pspnet_resolver.h>
00200 # include <errno.h>
00201 # include <unistd.h>
00202 # include <sys/select.h>
00203 # include <sys/time.h>
00204 # include <sys/fd_set.h>
00205 
00206 # define TCP_NODELAY 1
00207 # define SO_NONBLOCK 0x1009
00208 # define SOCKET int
00209 # define INVALID_SOCKET -1
00210 # define INADDR_NONE 0xffffffff
00211 # define closesocket close
00212 # define GET_LAST_ERROR() sceNetInetGetErrno()
00213 #endif /* PSP */
00214 
00215 /* OS/2 stuff */
00216 #if defined(__OS2__)
00217 # define SOCKET int
00218 # define INVALID_SOCKET -1
00219 # define ioctlsocket ioctl
00220 # define closesocket close
00221 # define GET_LAST_ERROR() (sock_errno())
00222 
00223 /* Includes needed for OS/2 systems */
00224 # include <types.h>
00225 # include <unistd.h>
00226 # include <sys/ioctl.h>
00227 # include <sys/socket.h>
00228 # include <netinet/in.h>
00229 # include <netinet/tcp.h>
00230 # include <arpa/inet.h>
00231 # include <net/if.h>
00232 # include <errno.h>
00233 # include <sys/time.h>
00234 # include <netdb.h>
00235 # include <nerrno.h>
00236 # define INADDR_NONE 0xffffffff
00237 
00238 typedef int socklen_t;
00239 #if !defined(__INNOTEK_LIBC__)
00240 typedef unsigned long in_addr_t;
00241 #endif /* __INNOTEK_LIBC__ */
00242 #endif /* OS/2 */
00243 
00244 /* MorphOS and Amiga stuff */
00245 #if defined(__MORPHOS__) || defined(__AMIGA__)
00246 # include <exec/types.h>
00247 # include <proto/exec.h>   /* required for Open/CloseLibrary() */
00248   /* MorphOS defines his network functions with UBYTE arrays while we
00249    *  use char arrays. This gives tons of unneeded warnings */
00250 # define UBYTE char
00251 # if defined(__MORPHOS__)
00252 #   include <sys/filio.h>  /* FIO* defines */
00253 #   include <sys/sockio.h> /* SIO* defines */
00254 #   include <netinet/in.h>
00255 # else /* __AMIGA__ */
00256 #   include <proto/socket.h>
00257 # endif
00258 
00259 /* Make the names compatible */
00260 # define closesocket(s) CloseSocket(s)
00261 # define GET_LAST_ERROR() Errno()
00262 # define ioctlsocket(s, request, status) IoctlSocket((LONG)s, (ULONG)request, (char*)status)
00263 # define ioctl ioctlsocket
00264 
00265   typedef unsigned int in_addr_t;
00266   typedef long         socklen_t;
00267   extern struct Library *SocketBase;
00268 
00269 # ifdef __AMIGA__
00270   /* for usleep() implementation */
00271   extern struct Device      *TimerBase;
00272   extern struct MsgPort     *TimerPort;
00273   extern struct timerequest *TimerRequest;
00274 # endif
00275 #endif /* __MORPHOS__ || __AMIGA__ */
00276 
00277 static inline bool SetNonBlocking(SOCKET d)
00278 {
00279 #ifdef WIN32
00280   u_long nonblocking = 1;
00281 #else
00282   int nonblocking = 1;
00283 #endif
00284 #if (defined(__BEOS__) && defined(BEOS_NET_SERVER)) || defined(PSP)
00285   return setsockopt(d, SOL_SOCKET, SO_NONBLOCK, &nonblocking, sizeof(nonblocking)) == 0;
00286 #else
00287   return ioctlsocket(d, FIONBIO, &nonblocking) == 0;
00288 #endif
00289 }
00290 
00291 static inline bool SetNoDelay(SOCKET d)
00292 {
00293   /* XXX should this be done at all? */
00294 #if !defined(BEOS_NET_SERVER) /* not implemented on BeOS net_server */
00295   int b = 1;
00296   /* The (const char*) cast is needed for windows */
00297   return setsockopt(d, IPPROTO_TCP, TCP_NODELAY, (const char*)&b, sizeof(b)) == 0;
00298 #else
00299   return true;
00300 #endif
00301 }
00302 
00303 /* Make sure these structures have the size we expect them to be */
00304 assert_compile(sizeof(in_addr)  ==  4);
00305 assert_compile(sizeof(in6_addr) == 16);
00306 
00307 #endif /* ENABLE_NETWORK */
00308 
00309 #endif /* NETWORK_CORE_OS_ABSTRACTION_H */

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