mirror of
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ebe96675ee
it from id.c into defs.c
303 lines
6.3 KiB
C
303 lines
6.3 KiB
C
/*-
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* Copyright (c) 1997 Brian Somers <brian@Awfulhak.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/param.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#include <sys/ioctl.h>
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#include <fcntl.h>
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#ifndef NONETGRAPH
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#include <netgraph.h>
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#endif
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#include <signal.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <string.h>
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#include <sysexits.h>
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#if defined(__FreeBSD__) && !defined(NOKLDLOAD)
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#include <sys/linker.h>
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#endif
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#include <unistd.h>
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#ifdef __OpenBSD__
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#include <util.h>
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#else
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#include <libutil.h>
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#endif
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#include <utmp.h>
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#include "log.h"
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#include "main.h"
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#include "id.h"
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static int uid;
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static int euid;
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void
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ID0init()
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{
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uid = getuid();
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euid = geteuid();
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}
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static void
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ID0setuser(void)
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{
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if (seteuid(uid) == -1) {
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log_Printf(LogERROR, "ID0setuser: Unable to seteuid!\n");
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AbortProgram(EX_NOPERM);
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}
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}
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uid_t
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ID0realuid()
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{
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return uid;
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}
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static void
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ID0set0(void)
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{
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if (seteuid(euid) == -1) {
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log_Printf(LogERROR, "ID0set0: Unable to seteuid!\n");
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AbortProgram(EX_NOPERM);
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}
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}
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int
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ID0ioctl(int fd, unsigned long req, void *arg)
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{
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int ret;
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ID0set0();
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ret = ioctl(fd, req, arg);
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log_Printf(LogID0, "%d = ioctl(%d, %lu, %p)\n", ret, fd, req, arg);
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ID0setuser();
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return ret;
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}
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int
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ID0unlink(const char *name)
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{
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int ret;
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ID0set0();
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ret = unlink(name);
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log_Printf(LogID0, "%d = unlink(\"%s\")\n", ret, name);
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ID0setuser();
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return ret;
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}
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int
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ID0socket(int domain, int type, int protocol)
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{
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int ret;
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ID0set0();
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ret = socket(domain, type, protocol);
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log_Printf(LogID0, "%d = socket(%d, %d, %d)\n", ret, domain, type, protocol);
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ID0setuser();
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return ret;
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}
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FILE *
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ID0fopen(const char *path, const char *mode)
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{
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FILE *ret;
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ID0set0();
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ret = fopen(path, mode);
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log_Printf(LogID0, "%p = fopen(\"%s\", \"%s\")\n", ret, path, mode);
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ID0setuser();
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return ret;
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}
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int
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ID0open(const char *path, int flags, ...)
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{
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int ret;
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va_list ap;
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va_start(ap, flags);
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ID0set0();
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ret = open(path, flags, va_arg(ap, int));
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log_Printf(LogID0, "%d = open(\"%s\", %d)\n", ret, path, flags);
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ID0setuser();
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va_end(ap);
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return ret;
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}
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int
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ID0write(int fd, const void *data, size_t len)
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{
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int ret;
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ID0set0();
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ret = write(fd, data, len);
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log_Printf(LogID0, "%d = write(%d, data, %ld)\n", ret, fd, (long)len);
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ID0setuser();
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return ret;
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}
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int
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ID0uu_lock(const char *basettyname)
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{
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int ret;
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ID0set0();
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ret = uu_lock(basettyname);
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log_Printf(LogID0, "%d = uu_lock(\"%s\")\n", ret, basettyname);
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ID0setuser();
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return ret;
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}
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int
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ID0uu_lock_txfr(const char *basettyname, pid_t newpid)
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{
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int ret;
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ID0set0();
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ret = uu_lock_txfr(basettyname, newpid);
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log_Printf(LogID0, "%d = uu_lock_txfr(\"%s\", %d)\n", ret, basettyname,
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(int)newpid);
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ID0setuser();
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return ret;
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}
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int
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ID0uu_unlock(const char *basettyname)
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{
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int ret;
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ID0set0();
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ret = uu_unlock(basettyname);
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log_Printf(LogID0, "%d = uu_unlock(\"%s\")\n", ret, basettyname);
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ID0setuser();
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return ret;
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}
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void
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ID0login(struct utmp *ut)
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{
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ID0set0();
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if (logout(ut->ut_line)) {
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log_Printf(LogID0, "logout(\"%s\")\n", ut->ut_line);
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logwtmp(ut->ut_line, "", "");
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log_Printf(LogID0, "logwtmp(\"%s\", \"\", \"\")\n", ut->ut_line);
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}
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login(ut);
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log_Printf(LogID0, "login(\"%s\", \"%.*s\")\n",
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ut->ut_line, (int)(sizeof ut->ut_name), ut->ut_name);
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ID0setuser();
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}
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void
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ID0logout(const char *device, int nologout)
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{
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struct utmp ut;
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strncpy(ut.ut_line, device, sizeof ut.ut_line - 1);
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ut.ut_line[sizeof ut.ut_line - 1] = '\0';
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ID0set0();
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if (nologout || logout(ut.ut_line)) {
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log_Printf(LogID0, "logout(\"%s\")\n", ut.ut_line);
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logwtmp(ut.ut_line, "", "");
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log_Printf(LogID0, "logwtmp(\"%s\", \"\", \"\")\n", ut.ut_line);
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} else
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log_Printf(LogERROR, "ID0logout: No longer logged in on %s\n", ut.ut_line);
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ID0setuser();
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}
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int
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ID0bind_un(int s, const struct sockaddr_un *name)
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{
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int result;
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ID0set0();
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result = bind(s, (const struct sockaddr *)name, sizeof *name);
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log_Printf(LogID0, "%d = bind(%d, \"%s\", %d)\n",
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result, s, name->sun_path, (int)sizeof(*name));
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ID0setuser();
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return result;
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}
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int
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ID0connect_un(int s, const struct sockaddr_un *name)
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{
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int result;
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ID0set0();
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result = connect(s, (const struct sockaddr *)name, sizeof *name);
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log_Printf(LogID0, "%d = connect(%d, \"%s\", %d)\n",
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result, s, name->sun_path, (int)sizeof(*name));
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ID0setuser();
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return result;
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}
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int
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ID0kill(pid_t pid, int sig)
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{
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int result;
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ID0set0();
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result = kill(pid, sig);
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log_Printf(LogID0, "%d = kill(%d, %d)\n", result, (int)pid, sig);
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ID0setuser();
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return result;
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}
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#if defined(__FreeBSD__) && !defined(NOKLDLOAD)
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int
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ID0kldload(const char *dev)
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{
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int result;
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ID0set0();
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result = kldload(dev);
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log_Printf(LogID0, "%d = kldload(\"%s\")\n", result, dev);
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ID0setuser();
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return result;
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}
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#endif
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#ifndef NONETGRAPH
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int
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ID0NgMkSockNode(const char *name, int *cs, int *ds)
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{
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int result;
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ID0set0();
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result = NgMkSockNode(name, cs, ds);
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log_Printf(LogID0, "%d = NgMkSockNode(\"%s\", &cs, &ds)\n",
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result, name ? name : "");
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ID0setuser();
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return result;
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}
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#endif
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