mirror of
https://git.gnunet.org/libmicrohttpd.git
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194 lines
6.3 KiB
C
194 lines
6.3 KiB
C
/*
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This file is part of libmicrohttpd
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Copyright (C) 2014 Karlson2k (Evgeny Grin)
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library.
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If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file include/platform_interface.h
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* @brief internal platform abstraction functions
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* @author Karlson2k (Evgeny Grin)
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*/
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#ifndef MHD_PLATFORM_INTERFACE_H
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#define MHD_PLATFORM_INTERFACE_H
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#include "platform.h"
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#if defined(_WIN32) && !defined(__CYGWIN__)
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#include "w32functions.h"
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#endif
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/* *****************************
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General function mapping
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*****************************/
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/* Platform-independent snprintf name */
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#if defined(HAVE_SNPRINTF)
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#define MHD_snprintf_ snprintf
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#else /* ! HAVE_SNPRINTF */
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#if defined(_WIN32)
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#define MHD_snprintf_ W32_snprintf
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#else /* ! _WIN32*/
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#error Your platform does not support snprintf() and MHD does not know how to emulate it on your platform.
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#endif /* ! _WIN32*/
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#endif /* ! HAVE_SNPRINTF */
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/**
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* _MHD_socket_funcs_size is type used to specify size for send and recv
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* functions
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*/
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#if !defined(MHD_WINSOCK_SOCKETS)
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typedef size_t _MHD_socket_funcs_size;
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#else
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typedef int _MHD_socket_funcs_size;
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#endif
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/**
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* MHD_socket_close_(fd) close any FDs (non-W32) / close only socket
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* FDs (W32). Note that on HP-UNIX, this function may leak the FD if
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* errno is set to EINTR. Do not use HP-UNIX.
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*
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* @param fd descriptor to close
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* @return 0 on success (error codes like EINTR and EIO are counted as success,
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* only EBADF counts as an error!)
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*/
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#if !defined(MHD_WINSOCK_SOCKETS)
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#define MHD_socket_close_(fd) (((0 != close(fd)) && (EBADF == errno)) ? -1 : 0)
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#else
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#define MHD_socket_close_(fd) closesocket((fd))
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#endif
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/**
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* MHD_socket_errno_ is errno of last function (non-W32) / errno of
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* last socket function (W32)
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*/
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#if !defined(MHD_WINSOCK_SOCKETS)
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#define MHD_socket_errno_ errno
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#else
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#define MHD_socket_errno_ MHD_W32_errno_from_winsock_()
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#endif
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/* MHD_socket_last_strerr_ is description string of last errno (non-W32) /
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* description string of last socket error (W32) */
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#if !defined(MHD_WINSOCK_SOCKETS)
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#define MHD_socket_last_strerr_() strerror(errno)
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#else
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#define MHD_socket_last_strerr_() MHD_W32_strerror_last_winsock_()
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#endif
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/* MHD_strerror_ is strerror (both non-W32/W32) */
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#if !defined(MHD_WINSOCK_SOCKETS)
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#define MHD_strerror_(errnum) strerror((errnum))
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#else
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#define MHD_strerror_(errnum) MHD_W32_strerror_((errnum))
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#endif
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/* MHD_set_socket_errno_ set errno to errnum (non-W32) / set socket last error to errnum (W32) */
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#if !defined(MHD_WINSOCK_SOCKETS)
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#define MHD_set_socket_errno_(errnum) errno=(errnum)
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#else
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#define MHD_set_socket_errno_(errnum) MHD_W32_set_last_winsock_error_((errnum))
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#endif
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/* MHD_SYS_select_ is wrapper macro for system select() function */
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#if !defined(MHD_WINSOCK_SOCKETS)
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#define MHD_SYS_select_(n,r,w,e,t) select((n),(r),(w),(e),(t))
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#else
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#define MHD_SYS_select_(n,r,w,e,t) \
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( (!(r) || ((fd_set*)(r))->fd_count == 0) && \
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(!(w) || ((fd_set*)(w))->fd_count == 0) && \
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(!(e) || ((fd_set*)(e))->fd_count == 0) ) ? \
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( (t) ? (Sleep((t)->tv_sec * 1000 + (t)->tv_usec / 1000), 0) : 0 ) : \
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(select((int)0,(r),(w),(e),(t)))
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#endif
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#if defined(HAVE_POLL)
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/* MHD_sys_poll_ is wrapper macro for system poll() function */
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#if !defined(MHD_WINSOCK_SOCKETS)
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#define MHD_sys_poll_ poll
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#else /* MHD_WINSOCK_SOCKETS */
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#define MHD_sys_poll_ WSAPoll
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#endif /* MHD_WINSOCK_SOCKETS */
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#endif /* HAVE_POLL */
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/* MHD_pipe_ create pipe (!MHD_DONT_USE_PIPES) /
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* create two connected sockets (MHD_DONT_USE_PIPES) */
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#ifndef MHD_DONT_USE_PIPES
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#define MHD_pipe_(fdarr) pipe((fdarr))
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#else /* MHD_DONT_USE_PIPES */
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#if !defined(_WIN32) || defined(__CYGWIN__)
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#define MHD_pipe_(fdarr) socketpair(AF_LOCAL, SOCK_STREAM, 0, (fdarr))
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#else /* !defined(_WIN32) || defined(__CYGWIN__) */
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#define MHD_pipe_(fdarr) MHD_W32_pair_of_sockets_((fdarr))
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#endif /* !defined(_WIN32) || defined(__CYGWIN__) */
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#endif /* MHD_DONT_USE_PIPES */
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/* MHD_pipe_errno_ is errno of last function (!MHD_DONT_USE_PIPES) /
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* errno of last emulated pipe function (MHD_DONT_USE_PIPES) */
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#ifndef MHD_DONT_USE_PIPES
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#define MHD_pipe_errno_ errno
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#else
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#define MHD_pipe_errno_ MHD_socket_errno_
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#endif
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/* MHD_pipe_last_strerror_ is description string of last errno (!MHD_DONT_USE_PIPES) /
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* description string of last pipe error (MHD_DONT_USE_PIPES) */
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#ifndef MHD_DONT_USE_PIPES
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#define MHD_pipe_last_strerror_() strerror(errno)
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#else
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#define MHD_pipe_last_strerror_() MHD_socket_last_strerr_()
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#endif
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/* MHD_pipe_write_ write data to real pipe (!MHD_DONT_USE_PIPES) /
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* write data to emulated pipe (MHD_DONT_USE_PIPES) */
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#ifndef MHD_DONT_USE_PIPES
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#define MHD_pipe_write_(fd, ptr, sz) write((fd), (const void*)(ptr), (sz))
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#else
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#define MHD_pipe_write_(fd, ptr, sz) send((fd), (const char*)(ptr), (sz), 0)
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#endif
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/* MHD_pipe_drain_ drain data from real pipe (!MHD_DONT_USE_PIPES) /
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* drain data from emulated pipe (MHD_DONT_USE_PIPES) */
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#ifndef MHD_DONT_USE_PIPES
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#define MHD_pipe_drain_(fd) do { long tmp; while (0 < read((fd), (void*)&tmp, sizeof (tmp))) ; } while (0)
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#else
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#define MHD_pipe_drain_(fd) do { long tmp; while (0 < recv((fd), (void*)&tmp, sizeof (tmp), 0)) ; } while (0)
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#endif
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/* MHD_pipe_close_(fd) close any FDs (non-W32) /
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* close emulated pipe FDs (W32) */
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#ifndef MHD_DONT_USE_PIPES
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#define MHD_pipe_close_(fd) close((fd))
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#else
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#define MHD_pipe_close_(fd) MHD_socket_close_((fd))
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#endif
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/* MHD_INVALID_PIPE_ is a value of bad pipe FD */
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#ifndef MHD_DONT_USE_PIPES
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#define MHD_INVALID_PIPE_ (-1)
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#else
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#define MHD_INVALID_PIPE_ MHD_INVALID_SOCKET
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#endif
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#if !defined(_WIN32) || defined(__CYGWIN__)
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#define MHD_random_() random()
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#else
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#define MHD_random_() MHD_W32_random_()
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#endif
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#endif /* MHD_PLATFORM_INTERFACE_H */
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