169 lines
4.4 KiB
C
169 lines
4.4 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 4 -*- */
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/* $Id$ */
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/* Copyright (C) 1998-99 Martin Baulig
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This file is part of LibGTop 1.0.
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Contributed by Martin Baulig <martin@home-of-linux.org>, April 1998.
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LibGTop is free software; you can redistribute it and/or modify it
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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,
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or (at your option) any later version.
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LibGTop is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with LibGTop; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA.
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*/
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#include "server.h"
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static glibtop _glibtop_global_server;
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glibtop *glibtop_global_server = &_glibtop_global_server;
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#include <glibtop.h>
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#include <glibtop/union.h>
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#include <glibtop/sysdeps.h>
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#include <sys/utsname.h>
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const unsigned long glibtop_server_features =
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GLIBTOP_SUID_CPU +
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GLIBTOP_SUID_MEM +
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GLIBTOP_SUID_SWAP +
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GLIBTOP_SUID_UPTIME +
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GLIBTOP_SUID_LOADAVG +
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GLIBTOP_SUID_SHM_LIMITS +
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GLIBTOP_SUID_MSG_LIMITS +
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GLIBTOP_SUID_SEM_LIMITS +
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GLIBTOP_SUID_PROCLIST +
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GLIBTOP_SUID_PROC_STATE +
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GLIBTOP_SUID_PROC_UID +
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GLIBTOP_SUID_PROC_MEM +
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GLIBTOP_SUID_PROC_TIME +
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GLIBTOP_SUID_PROC_SIGNAL +
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GLIBTOP_SUID_PROC_KERNEL +
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GLIBTOP_SUID_PROC_SEGMENT +
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GLIBTOP_SUID_PROC_ARGS +
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GLIBTOP_SUID_PROC_MAP +
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GLIBTOP_SUID_NETINFO +
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GLIBTOP_SUID_NETLOAD +
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GLIBTOP_SUID_INTERFACE_NAMES +
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GLIBTOP_SUID_PPP;
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#include <fcntl.h>
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#include <locale.h>
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int
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main(int argc, char *argv[])
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{
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struct utsname uts;
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int uid, euid, gid, egid;
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glibtop *server;
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/* !!! WE ARE ROOT HERE - CHANGE WITH CAUTION !!! */
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uid = getuid (); euid = geteuid ();
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gid = getgid (); egid = getegid ();
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if (uname (&uts) < 0) _exit (1);
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if (strcmp (uts.sysname, LIBGTOP_COMPILE_SYSTEM) ||
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strcmp (uts.release, LIBGTOP_COMPILE_RELEASE) ||
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strcmp (uts.machine, LIBGTOP_COMPILE_MACHINE)) {
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fprintf (stderr, "Can only run on %s %s %s\n",
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LIBGTOP_COMPILE_SYSTEM,
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LIBGTOP_COMPILE_RELEASE,
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LIBGTOP_COMPILE_MACHINE);
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_exit (1);
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}
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server = glibtop_global_server;
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if (!server->_priv)
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server->_priv = glibtop_calloc_r
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(server, 1, sizeof (glibtop_server_private));
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glibtop_init_p (server, 0, 0);
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if (setreuid (euid, uid)) _exit (1);
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if (setregid (egid, gid)) _exit (1);
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/* !!! END OF SUID ROOT PART !!! */
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handle_slave_connection (0, 0);
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_exit (0);
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}
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void
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handle_slave_connection (int input, int output)
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{
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glibtop_command _cmnd, *cmnd = &_cmnd;
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// glibtop_send_version_i (glibtop_global_server, output);
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while (do_read (input, cmnd, sizeof (glibtop_command))) {
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size_t recv_size = 0, send_size = 0;
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char parameter [BUFSIZ];
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int retval, func_retval;
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void *recv_ptr = NULL;
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glibtop_response resp;
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fprintf (stderr, "Slave %d received command "
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"%ld from client.\n", getpid (), (long) cmnd->command);
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if (cmnd->send_size >= BUFSIZ)
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glibtop_error ("Client sent %d bytes, but buffer is %d",
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cmnd->send_size, BUFSIZ);
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else if (cmnd->param_size >= BUFSIZ)
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glibtop_error ("Client sent %d bytes, but buffer is %d",
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cmnd->param_size, BUFSIZ);
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memset (parameter, 0, sizeof (parameter));
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if (cmnd->send_size) {
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#ifdef SLAVE_DEBUG
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fprintf (stderr, "Client has %d bytes of data.\n",
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cmnd->send_size);
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#endif
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send_size = cmnd->send_size;
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do_read (input, parameter, send_size);
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} else if (cmnd->param_size) {
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#ifdef SLAVE_DEBUG
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fprintf (stderr, "Client has %d bytes of parameter data.\n",
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cmnd->param_size);
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#endif
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send_size = cmnd->param_size;
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memcpy (parameter, cmnd->parameter, send_size);
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}
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retval = glibtop_demarshal_func_i (glibtop_global_server, NULL,
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cmnd->command, parameter,
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send_size, NULL, 0,
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&recv_ptr, &recv_size,
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&func_retval);
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fprintf (stderr, "Retval %d / %d - %p - %d\n",
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retval, func_retval, recv_ptr, recv_size);
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memset (&resp, 0, sizeof (glibtop_response));
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resp.retval = retval;
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resp.glibtop_errno = func_retval;
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resp.recv_size = recv_size;
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resp.data_size = 0;
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do_output (output, &resp, recv_ptr, NULL);
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}
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}
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