146 lines
3.6 KiB
C
146 lines
3.6 KiB
C
/* assuan-io.c - Wraps the read and write functions.
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* Copyright (C) 2002, 2004, 2006 Free Software Foundation, Inc.
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*
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* This file is part of Assuan.
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*
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* Assuan is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* Assuan is distributed in the hope that it will be useful, but
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* 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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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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* USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <sys/time.h>
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#include <sys/types.h>
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#ifdef HAVE_SYS_SOCKET_H
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# include <sys/socket.h>
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#endif
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#include <unistd.h>
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#include <errno.h>
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#ifdef HAVE_W32_SYSTEM
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# include <windows.h>
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#else
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# include <sys/wait.h>
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#endif
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#include "assuan-defs.h"
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#ifndef HAVE_W32_SYSTEM
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pid_t
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_assuan_waitpid (pid_t pid, int *status, int options)
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{
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return waitpid (pid, status, options);
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}
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#endif
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ssize_t
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_assuan_simple_read (assuan_context_t ctx, void *buffer, size_t size)
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{
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#ifdef HAVE_W32_SYSTEM
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/* Due to the peculiarities of the W32 API we can't use read for a
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network socket and thus we try to use recv first and fallback to
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read if recv detects that it is not a network socket. */
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int n;
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n = recv (ctx->inbound.fd, buffer, size, 0);
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if (n == -1 && WSAGetLastError () == WSAENOTSOCK)
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{
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DWORD nread = 0;
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n = ReadFile ((HANDLE)ctx->inbound.fd, buffer, size, &nread, NULL);
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if (!n)
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{
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errno = EIO; /* FIXME: We should have a proper mapping. */
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n = -1;
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}
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else
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n = (int)nread;
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}
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return n;
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#else /*!HAVE_W32_SYSTEM*/
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return read (ctx->inbound.fd, buffer, size);
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#endif /*!HAVE_W32_SYSTEM*/
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}
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ssize_t
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_assuan_simple_write (assuan_context_t ctx, const void *buffer, size_t size)
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{
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#ifdef HAVE_W32_SYSTEM
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/* Due to the peculiarities of the W32 API we can't use write for a
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network socket and thus we try to use send first and fallback to
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write if send detects that it is not a network socket. */
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int n;
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n = send (ctx->outbound.fd, buffer, size, 0);
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if (n == -1 && WSAGetLastError () == WSAENOTSOCK)
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{
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DWORD nwrite;
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n = WriteFile ((HANDLE)ctx->outbound.fd, buffer, size, &nwrite, NULL);
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if (!n)
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{
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errno = EIO; /* FIXME: We should have a proper mapping. */
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n = -1;
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}
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else
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n = (int)nwrite;
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}
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return n;
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#else /*!HAVE_W32_SYSTEM*/
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return write (ctx->outbound.fd, buffer, size);
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#endif /*!HAVE_W32_SYSTEM*/
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}
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#ifdef HAVE_W32_SYSTEM
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int
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_assuan_simple_sendmsg (assuan_context_t ctx, void *msg)
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#else
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ssize_t
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_assuan_simple_sendmsg (assuan_context_t ctx, struct msghdr *msg)
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#endif
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{
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#ifdef HAVE_W32_SYSTEM
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return _assuan_error (ASSUAN_Not_Implemented);
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#else
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int ret;
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while ( (ret = sendmsg (ctx->outbound.fd, msg, 0)) == -1 && errno == EINTR)
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;
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return ret;
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#endif
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}
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#ifdef HAVE_W32_SYSTEM
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int
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_assuan_simple_recvmsg (assuan_context_t ctx, void *msg)
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#else
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ssize_t
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_assuan_simple_recvmsg (assuan_context_t ctx, struct msghdr *msg)
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#endif
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{
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#ifdef HAVE_W32_SYSTEM
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return _assuan_error (ASSUAN_Not_Implemented);
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#else
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int ret;
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while ( (ret = recvmsg (ctx->inbound.fd, msg, 0)) == -1 && errno == EINTR)
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;
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return ret;
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#endif
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}
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