/* This file is part of libmicrohttpd Copyright (C) 2014 Karlson2k (Evgeny Grin) 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, see . */ /** * @file include/platform_interface.h * @brief internal platform abstraction functions * @author Karlson2k (Evgeny Grin) */ #ifndef MHD_PLATFORM_INTERFACE_H #define MHD_PLATFORM_INTERFACE_H #include "platform.h" #if defined(_WIN32) && !defined(__CYGWIN__) #include "w32functions.h" #endif /* ***************************** General function mapping *****************************/ /* Platform-independent snprintf name */ #if defined(HAVE_SNPRINTF) #define MHD_snprintf_ snprintf #else /* ! HAVE_SNPRINTF */ #if defined(_WIN32) #define MHD_snprintf_ W32_snprintf #else /* ! _WIN32*/ #error Your platform does not support snprintf() and MHD does not know how to emulate it on your platform. #endif /* ! _WIN32*/ #endif /* ! HAVE_SNPRINTF */ /** * _MHD_socket_funcs_size is type used to specify size for send and recv * functions */ #if !defined(MHD_WINSOCK_SOCKETS) typedef size_t _MHD_socket_funcs_size; #else typedef int _MHD_socket_funcs_size; #endif /** * MHD_socket_close_(fd) close any FDs (non-W32) / close only socket * FDs (W32). Note that on HP-UNIX, this function may leak the FD if * errno is set to EINTR. Do not use HP-UNIX. * * @param fd descriptor to close * @return 0 on success (error codes like EINTR and EIO are counted as success, * only EBADF counts as an error!) */ #if !defined(MHD_WINSOCK_SOCKETS) #define MHD_socket_close_(fd) (((0 != close(fd)) && (EBADF == errno)) ? -1 : 0) #else #define MHD_socket_close_(fd) closesocket((fd)) #endif /** * MHD_socket_errno_ is errno of last function (non-W32) / errno of * last socket function (W32) */ #if !defined(MHD_WINSOCK_SOCKETS) #define MHD_socket_errno_ errno #else #define MHD_socket_errno_ MHD_W32_errno_from_winsock_() #endif /* MHD_socket_last_strerr_ is description string of last errno (non-W32) / * description string of last socket error (W32) */ #if !defined(MHD_WINSOCK_SOCKETS) #define MHD_socket_last_strerr_() strerror(errno) #else #define MHD_socket_last_strerr_() MHD_W32_strerror_last_winsock_() #endif /* MHD_strerror_ is strerror (both non-W32/W32) */ #if !defined(MHD_WINSOCK_SOCKETS) #define MHD_strerror_(errnum) strerror((errnum)) #else #define MHD_strerror_(errnum) MHD_W32_strerror_((errnum)) #endif /* MHD_set_socket_errno_ set errno to errnum (non-W32) / set socket last error to errnum (W32) */ #if !defined(MHD_WINSOCK_SOCKETS) #define MHD_set_socket_errno_(errnum) errno=(errnum) #else #define MHD_set_socket_errno_(errnum) MHD_W32_set_last_winsock_error_((errnum)) #endif /* MHD_SYS_select_ is wrapper macro for system select() function */ #if !defined(MHD_WINSOCK_SOCKETS) #define MHD_SYS_select_(n,r,w,e,t) select((n),(r),(w),(e),(t)) #else #define MHD_SYS_select_(n,r,w,e,t) \ ( (!(r) || ((fd_set*)(r))->fd_count == 0) && \ (!(w) || ((fd_set*)(w))->fd_count == 0) && \ (!(e) || ((fd_set*)(e))->fd_count == 0) ) ? \ ( (t) ? (Sleep((t)->tv_sec * 1000 + (t)->tv_usec / 1000), 0) : 0 ) : \ (select((int)0,(r),(w),(e),(t))) #endif #if defined(HAVE_POLL) /* MHD_sys_poll_ is wrapper macro for system poll() function */ #if !defined(MHD_WINSOCK_SOCKETS) #define MHD_sys_poll_ poll #else /* MHD_WINSOCK_SOCKETS */ #define MHD_sys_poll_ WSAPoll #endif /* MHD_WINSOCK_SOCKETS */ #endif /* HAVE_POLL */ /* MHD_pipe_ create pipe (!MHD_DONT_USE_PIPES) / * create two connected sockets (MHD_DONT_USE_PIPES) */ #ifndef MHD_DONT_USE_PIPES #define MHD_pipe_(fdarr) pipe((fdarr)) #else /* MHD_DONT_USE_PIPES */ #if !defined(_WIN32) || defined(__CYGWIN__) #define MHD_pipe_(fdarr) socketpair(AF_LOCAL, SOCK_STREAM, 0, (fdarr)) #else /* !defined(_WIN32) || defined(__CYGWIN__) */ #define MHD_pipe_(fdarr) MHD_W32_pair_of_sockets_((fdarr)) #endif /* !defined(_WIN32) || defined(__CYGWIN__) */ #endif /* MHD_DONT_USE_PIPES */ /* MHD_pipe_errno_ is errno of last function (!MHD_DONT_USE_PIPES) / * errno of last emulated pipe function (MHD_DONT_USE_PIPES) */ #ifndef MHD_DONT_USE_PIPES #define MHD_pipe_errno_ errno #else #define MHD_pipe_errno_ MHD_socket_errno_ #endif /* MHD_pipe_last_strerror_ is description string of last errno (!MHD_DONT_USE_PIPES) / * description string of last pipe error (MHD_DONT_USE_PIPES) */ #ifndef MHD_DONT_USE_PIPES #define MHD_pipe_last_strerror_() strerror(errno) #else #define MHD_pipe_last_strerror_() MHD_socket_last_strerr_() #endif /* MHD_pipe_write_ write data to real pipe (!MHD_DONT_USE_PIPES) / * write data to emulated pipe (MHD_DONT_USE_PIPES) */ #ifndef MHD_DONT_USE_PIPES #define MHD_pipe_write_(fd, ptr, sz) write((fd), (const void*)(ptr), (sz)) #else #define MHD_pipe_write_(fd, ptr, sz) send((fd), (const char*)(ptr), (sz), 0) #endif /* MHD_pipe_drain_ drain data from real pipe (!MHD_DONT_USE_PIPES) / * drain data from emulated pipe (MHD_DONT_USE_PIPES) */ #ifndef MHD_DONT_USE_PIPES #define MHD_pipe_drain_(fd) do { long tmp; while (0 < read((fd), (void*)&tmp, sizeof (tmp))) ; } while (0) #else #define MHD_pipe_drain_(fd) do { long tmp; while (0 < recv((fd), (void*)&tmp, sizeof (tmp), 0)) ; } while (0) #endif /* MHD_pipe_close_(fd) close any FDs (non-W32) / * close emulated pipe FDs (W32) */ #ifndef MHD_DONT_USE_PIPES #define MHD_pipe_close_(fd) close((fd)) #else #define MHD_pipe_close_(fd) MHD_socket_close_((fd)) #endif /* MHD_INVALID_PIPE_ is a value of bad pipe FD */ #ifndef MHD_DONT_USE_PIPES #define MHD_INVALID_PIPE_ (-1) #else #define MHD_INVALID_PIPE_ MHD_INVALID_SOCKET #endif #if !defined(_WIN32) || defined(__CYGWIN__) #define MHD_random_() random() #else #define MHD_random_() MHD_W32_random_() #endif #endif /* MHD_PLATFORM_INTERFACE_H */