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140 lines
2.9 KiB
C
140 lines
2.9 KiB
C
/* assuan-socket-server.c - Assuan socket based server
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* Copyright (C) 2002 Free Software Foundation, Inc.
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*
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* This file is part of GnuPG.
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*
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* GnuPG is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* GnuPG 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#include <config.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <errno.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#include <unistd.h>
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#ifdef USE_GNU_PTH
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# include <pth.h>
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#endif
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#include "assuan-defs.h"
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static int
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accept_connection (ASSUAN_CONTEXT ctx)
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{
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int fd;
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struct sockaddr_un clnt_addr;
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size_t len = sizeof clnt_addr;
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ctx->client_pid = (pid_t)-1;
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#ifdef USE_GNU_PTH
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fd = pth_accept (ctx->listen_fd, (struct sockaddr*)&clnt_addr, &len );
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#else
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fd = accept (ctx->listen_fd, (struct sockaddr*)&clnt_addr, &len );
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#endif
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if (fd == -1)
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{
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ctx->os_errno = errno;
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return ASSUAN_Accept_Failed;
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}
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#ifdef HAVE_SO_PEERCRED
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{
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struct ucred cr;
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int cl = sizeof cr;
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if ( !getsockopt (fd, SOL_SOCKET, SO_PEERCRED, &cr, &cl) )
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ctx->client_pid = cr.pid;
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}
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#endif
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ctx->inbound.fd = fd;
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ctx->inbound.eof = 0;
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ctx->inbound.linelen = 0;
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ctx->inbound.attic.linelen = 0;
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ctx->inbound.attic.pending = 0;
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ctx->outbound.fd = fd;
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ctx->outbound.data.linelen = 0;
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ctx->outbound.data.error = 0;
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ctx->confidential = 0;
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return 0;
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}
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static int
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finish_connection (ASSUAN_CONTEXT ctx)
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{
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if (ctx->inbound.fd != -1)
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{
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close (ctx->inbound.fd);
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}
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ctx->inbound.fd = -1;
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ctx->outbound.fd = -1;
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return 0;
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}
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static void
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deinit_socket_server (ASSUAN_CONTEXT ctx)
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{
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finish_connection (ctx);
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}
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/* Initialize a server for the socket LISTEN_FD which has already be
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put into listen mode */
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int
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assuan_init_socket_server (ASSUAN_CONTEXT *r_ctx, int listen_fd)
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{
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ASSUAN_CONTEXT ctx;
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int rc;
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*r_ctx = NULL;
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ctx = xtrycalloc (1, sizeof *ctx);
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if (!ctx)
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return ASSUAN_Out_Of_Core;
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ctx->is_server = 1;
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ctx->input_fd = -1;
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ctx->output_fd = -1;
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ctx->inbound.fd = -1;
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ctx->outbound.fd = -1;
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ctx->listen_fd = listen_fd;
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ctx->deinit_handler = deinit_socket_server;
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ctx->accept_handler = accept_connection;
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ctx->finish_handler = finish_connection;
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rc = _assuan_register_std_commands (ctx);
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if (rc)
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xfree (ctx);
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else
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*r_ctx = ctx;
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return rc;
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}
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