mingw.h

   1 /*
   2 Copyright (c) 2006 by Dan Kennedy.
   3 Copyright (c) 2006 by Juliusz Chroboczek.
   4
   5 Permission is hereby granted, free of charge, to any person obtaining a copy
   6 of this software and associated documentation files (the "Software"), to deal
   7 in the Software without restriction, including without limitation the rights
   8 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   9 copies of the Software, and to permit persons to whom the Software is
  10 furnished to do so, subject to the following conditions:
  11
  12 The above copyright notice and this permission notice shall be included in
  13 all copies or substantial portions of the Software.
  14
  15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
  18 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  20 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  21 THE SOFTWARE.
  22 */
  23
  24 /*
  25  * Polipo was originally designed to run on Unix-like systems. This
  26  * header file (and it's accompanying implementation file mingw.c) contain
  27  * code that allows polipo to run on Microsoft Windows too.
  28  *
  29  * The target MS windows compiler is Mingw (MINimal Gnu for Windows). The
  30  * code in this file probably get's us pretty close to MSVC also, but
  31  * this has not been tested. To build polipo for Mingw, define the MINGW
  32  * symbol. For Unix or Unix-like systems, leave it undefined.
  33  */
  34
  35 #ifdef MINGW
  36
  37 /* Unfortunately, there's no hiding it. */
  38 #define HAVE_WINSOCK 1
  39
  40 /* At time of writing, a fair bit of stuff doesn't work under Mingw.
  41  * Hopefully they will be fixed later (especially the disk-cache).
  42  */
  43 #define NO_IPv6 1
  44
  45 #include <io.h>
  46
  47 #define S_IROTH S_IREAD
  48
  49 /* Pull in winsock.h for (almost) berkeley sockets. */
  50 #include <winsock.h>
  51 #define ENOTCONN        WSAENOTCONN
  52 #define EWOULDBLOCK     WSAEWOULDBLOCK
  53 #define ENOBUFS         WSAENOBUFS
  54 #define ECONNRESET      WSAECONNRESET
  55 #define ESHUTDOWN       WSAESHUTDOWN
  56 #define EAFNOSUPPORT    WSAEAFNOSUPPORT
  57 #define EPROTONOSUPPORT WSAEPROTONOSUPPORT
  58 #define EINPROGRESS     WSAEINPROGRESS
  59 #define EISCONN         WSAEISCONN
  60
  61 /* winsock doesn't feature poll(), so there is a version implemented
  62  * in terms of select() in mingw.c. The following definitions
  63  * are copied from linux man pages. A poll() macro is defined to
  64  * call the version in mingw.c.
  65  */
  66 #define POLLIN      0x0001    /* There is data to read */
  67 #define POLLPRI     0x0002    /* There is urgent data to read */
  68 #define POLLOUT     0x0004    /* Writing now will not block */
  69 #define POLLERR     0x0008    /* Error condition */
  70 #define POLLHUP     0x0010    /* Hung up */
  71 #define POLLNVAL    0x0020    /* Invalid request: fd not open */
  72 struct pollfd {
  73     SOCKET fd;        /* file descriptor */
  74     short events;     /* requested events */
  75     short revents;    /* returned events */
  76 };
  77 #define poll(x, y, z)        mingw_poll(x, y, z)
  78
  79 /* These wrappers do nothing special except set the global errno variable if
  80  * an error occurs (winsock doesn't do this by default). They set errno
  81  * to unix-like values (i.e. WSAEWOULDBLOCK is mapped to EAGAIN), so code
  82  * outside of this file "shouldn't" have to worry about winsock specific error
  83  * handling.
  84  */
  85 #define socket(x, y, z)      mingw_socket(x, y, z)
  86 #define connect(x, y, z)     mingw_connect(x, y, z)
  87 #define accept(x, y, z)      mingw_accept(x, y, z)
  88 #define shutdown(x, y)       mingw_shutdown(x, y)
  89 #define getpeername(x, y, z) mingw_getpeername(x, y, z)
  90
  91 /* Wrapper macros to call misc. functions mingw is missing */
  92 #define sleep(x)             mingw_sleep(x)
  93 #define inet_aton(x, y)      mingw_inet_aton(x, y)
  94 #define gettimeofday(x, y)   mingw_gettimeofday(x, y)
  95 #define stat(x, y)           mingw_stat(x, y)
  96
  97 #define mkdir(x, y) mkdir(x)
  98
  99 /* Winsock uses int instead of the usual socklen_t */
 100 typedef int socklen_t;
 101
 102 /* Function prototypes for functions in mingw.c */
 103 unsigned int mingw_sleep(unsigned int);
 104 int     mingw_inet_aton(const char *, struct in_addr *);
 105 int     mingw_gettimeofday(struct timeval *, char *);
 106 int     mingw_poll(struct pollfd *, unsigned int, int);
 107 SOCKET  mingw_socket(int, int, int);
 108 int     mingw_connect(SOCKET, struct sockaddr*, socklen_t);
 109 SOCKET  mingw_accept(SOCKET, struct sockaddr*, socklen_t *);
 110 int     mingw_shutdown(SOCKET, int);
 111 int     mingw_getpeername(SOCKET, struct sockaddr*, socklen_t *);
 112
 113 /* Three socket specific macros */
 114 #define READ(x, y, z)  mingw_read_socket(x, y, z)
 115 #define WRITE(x, y, z) mingw_write_socket(x, y, z)
 116 #define CLOSE(x)       mingw_close_socket(x)
 117
 118 int mingw_read_socket(SOCKET, void *, int);
 119 int mingw_write_socket(SOCKET, void *, int);
 120 int mingw_close_socket(SOCKET);
 121
 122 int mingw_setnonblocking(SOCKET, int);
 123 int mingw_stat(const char*, struct stat*);
 124 #endif
 125
 126 #ifndef HAVE_READV_WRITEV
 127 /*
 128  * The HAVE_READV_WRITEV symbol should be defined if the system features
 129  * the vector IO functions readv() and writev() and those functions may
 130  * be legally used with sockets.
 131  */
 132 struct iovec {
 133     void *iov_base;   /* Starting address */
 134     size_t iov_len;   /* Number of bytes */
 135 };
 136 #define WRITEV(x, y, z) polipo_writev(x, y, z)
 137 #define READV(x, y, z)  polipo_readv(x, y, z)
 138 int polipo_readv(int fd, const struct iovec *vector, int count);
 139 int polipo_writev(int fd, const struct iovec *vector, int count);
 140 #endif