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Current Path: /usr/src/usr.sbin/ppp

📁 ..
📄 Makefile(1.66 KB)
📄 Makefile.depend(435 B)
📄 README.changes(7.26 KB)
📄 README.nat(14.85 KB)
📄 acf.c(3.51 KB)
📄 acf.h(1.5 KB)
📄 arp.c(8.24 KB)
📄 arp.h(1.76 KB)
📄 async.c(5.39 KB)
📄 async.h(1.9 KB)
📄 auth.c(12.02 KB)
📄 auth.h(2.69 KB)
📄 bundle.c(56.37 KB)
📄 bundle.h(7.7 KB)
📄 cbcp.c(22.53 KB)
📄 cbcp.h(2.51 KB)
📄 ccp.c(23.33 KB)
📄 ccp.h(5.53 KB)
📄 chap.c(27 KB)
📄 chap.h(2.69 KB)
📄 chap_ms.c(12.22 KB)
📄 chap_ms.h(2.48 KB)
📄 chat.c(20.41 KB)
📄 chat.h(2.92 KB)
📄 command.c(101.76 KB)
📄 command.h(3.02 KB)
📄 datalink.c(42.89 KB)
📄 datalink.h(6.11 KB)
📄 deflate.c(15.89 KB)
📄 deflate.h(1.52 KB)
📄 defs.c(8.61 KB)
📄 defs.h(5.41 KB)
📄 descriptor.h(2.24 KB)
📄 ether.c(20.81 KB)
📄 ether.h(1.73 KB)
📄 exec.c(11.47 KB)
📄 exec.h(1.67 KB)
📄 filter.c(15.76 KB)
📄 filter.h(3.8 KB)
📄 fsm.c(31.01 KB)
📄 fsm.h(7.02 KB)
📄 hdlc.c(15.17 KB)
📄 hdlc.h(3.9 KB)
📄 i4b.h(1.73 KB)
📄 id.c(6.05 KB)
📄 id.h(3.01 KB)
📄 iface.c(22.41 KB)
📄 iface.h(2.97 KB)
📄 ip.c(30.21 KB)
📄 ip.h(2.09 KB)
📄 ipcp.c(42.99 KB)
📄 ipcp.h(5.14 KB)
📄 iplist.c(5.54 KB)
📄 iplist.h(1.99 KB)
📄 ipv6cp.c(21.9 KB)
📄 ipv6cp.h(3.26 KB)
📄 layer.h(1.97 KB)
📄 lcp.c(39.22 KB)
📄 lcp.h(6.3 KB)
📄 link.c(10.36 KB)
📄 link.h(3.42 KB)
📄 log.c(11.33 KB)
📄 log.h(4.14 KB)
📄 lqr.c(17.5 KB)
📄 lqr.h(3.31 KB)
📄 main.c(17.93 KB)
📄 main.h(1.6 KB)
📄 mbuf.c(10.02 KB)
📄 mbuf.h(4 KB)
📄 mp.c(33.66 KB)
📄 mp.h(4.87 KB)
📄 mppe.c(20.27 KB)
📄 mppe.h(1.57 KB)
📄 nat_cmd.c(15.37 KB)
📄 nat_cmd.h(1.88 KB)
📄 ncp.c(13.17 KB)
📄 ncp.h(4.36 KB)
📄 ncpaddr.c(23.06 KB)
📄 ncpaddr.h(4.63 KB)
📄 netgraph.c(20.65 KB)
📄 netgraph.h(1.72 KB)
📄 pap.c(8.83 KB)
📄 pap.h(1.78 KB)
📄 physical.c(29.01 KB)
📄 physical.h(6.5 KB)
📄 ppp.8(149.48 KB)
📄 ppp.conf(1.23 KB)
📄 pred.c(8.83 KB)
📄 pred.h(1.59 KB)
📄 probe.c(2.29 KB)
📄 probe.h(1.57 KB)
📄 prompt.c(12.92 KB)
📄 prompt.h(3.87 KB)
📄 proto.c(3.22 KB)
📄 proto.h(2.4 KB)
📄 radius.c(39.38 KB)
📄 radius.h(4.6 KB)
📄 route.c(25.91 KB)
📄 route.h(3.3 KB)
📄 server.c(10.9 KB)
📄 server.h(2.26 KB)
📄 sig.c(3.45 KB)
📄 sig.h(1.6 KB)
📄 slcompress.c(17.2 KB)
📄 slcompress.h(6.48 KB)
📄 sync.c(2.7 KB)
📄 sync.h(1.44 KB)
📄 systems.c(11.45 KB)
📄 systems.h(2.02 KB)
📄 tcp.c(5.63 KB)
📄 tcp.h(1.66 KB)
📄 tcpmss.c(5.06 KB)
📄 tcpmss.h(1.44 KB)
📄 throughput.c(8.84 KB)
📄 throughput.h(2.91 KB)
📄 timer.c(8.14 KB)
📄 timer.h(2.31 KB)
📄 tty.c(20.63 KB)
📄 tty.h(1.73 KB)
📄 tun.c(3.27 KB)
📄 tun.h(1.58 KB)
📄 ua.h(2.98 KB)
📄 udp.c(8.7 KB)
📄 udp.h(1.67 KB)
📄 vjcomp.c(5.68 KB)
📄 vjcomp.h(1.53 KB)

Editing: id.c

/*-
 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
 *
 * Copyright (c) 1997 Brian Somers <brian@Awfulhak.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * $FreeBSD$
 */

#include <sys/param.h>
#include <sys/socket.h>
#include <sys/un.h>

#include <sys/ioctl.h>
#include <fcntl.h>
#ifndef NONETGRAPH
#include <netgraph.h>
#endif
#include <signal.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <sysexits.h>
#if defined(__FreeBSD__) && !defined(NOKLDLOAD)
#include <sys/linker.h>
#endif
#include <unistd.h>
#ifdef __OpenBSD__
#include <util.h>
#else
#include <libutil.h>
#endif
#include <utmpx.h>

#include "log.h"
#include "main.h"
#include "id.h"

static int uid;
static int euid;

void
ID0init()
{
  uid = getuid();
  euid = geteuid();
}

static void
ID0setuser(void)
{
  if (seteuid(uid) == -1) {
    log_Printf(LogERROR, "ID0setuser: Unable to seteuid!\n");
    AbortProgram(EX_NOPERM);
  }
}

uid_t
ID0realuid()
{
  return uid;
}

static void
ID0set0(void)
{
  if (seteuid(euid) == -1) {
    log_Printf(LogERROR, "ID0set0: Unable to seteuid!\n");
    AbortProgram(EX_NOPERM);
  }
}

int
ID0ioctl(int fd, unsigned long req, void *arg)
{
  int ret;

ID0set0();
  ret = ioctl(fd, req, arg);
  log_Printf(LogID0, "%d = ioctl(%d, %lu, %p)\n", ret, fd, req, arg);
  ID0setuser();
  return ret;
}

int
ID0unlink(const char *name)
{
  int ret;

ID0set0();
  ret = unlink(name);
  log_Printf(LogID0, "%d = unlink(\"%s\")\n", ret, name);
  ID0setuser();
  return ret;
}

int
ID0socket(int domain, int type, int protocol)
{
  int ret;

ID0set0();
  ret = socket(domain, type, protocol);
  log_Printf(LogID0, "%d = socket(%d, %d, %d)\n", ret, domain, type, protocol);
  ID0setuser();
  return ret;
}

FILE *
ID0fopen(const char *path, const char *mode)
{
  FILE *ret;

ID0set0();
  ret = fopen(path, mode);
  log_Printf(LogID0, "%p = fopen(\"%s\", \"%s\")\n", ret, path, mode);
  ID0setuser();
  return ret;
}

int
ID0open(const char *path, int flags, ...)
{
  int ret;
  va_list ap;

va_start(ap, flags);
  ID0set0();
  ret = open(path, flags, va_arg(ap, int));
  log_Printf(LogID0, "%d = open(\"%s\", %d)\n", ret, path, flags);
  ID0setuser();
  va_end(ap);
  return ret;
}

int
ID0write(int fd, const void *data, size_t len)
{
  int ret;

ID0set0();
  ret = write(fd, data, len);
  log_Printf(LogID0, "%d = write(%d, data, %ld)\n", ret, fd, (long)len);
  ID0setuser();
  return ret;
}

int
ID0uu_lock(const char *basettyname)
{
  int ret;

ID0set0();
  ret = uu_lock(basettyname);
  log_Printf(LogID0, "%d = uu_lock(\"%s\")\n", ret, basettyname);
  ID0setuser();
  return ret;
}

int
ID0uu_lock_txfr(const char *basettyname, pid_t newpid)
{
  int ret;

ID0set0();
  ret = uu_lock_txfr(basettyname, newpid);
  log_Printf(LogID0, "%d = uu_lock_txfr(\"%s\", %ld)\n", ret, basettyname,
             (long)newpid);
  ID0setuser();
  return ret;
}

int
ID0uu_unlock(const char *basettyname)
{
  int ret;

ID0set0();
  ret = uu_unlock(basettyname);
  log_Printf(LogID0, "%d = uu_unlock(\"%s\")\n", ret, basettyname);
  ID0setuser();
  return ret;
}

void
ID0login(const struct utmpx *ut)
{
  ID0set0();
  pututxline(ut);
  log_Printf(LogID0, "pututxline(\"%.*s\", \"%.*s\", \"%.*s\", \"%.*s\")\n",
      (int)sizeof ut->ut_id, ut->ut_id,
      (int)sizeof ut->ut_user, ut->ut_user,
      (int)sizeof ut->ut_line, ut->ut_line,
      (int)sizeof ut->ut_host, ut->ut_host);
  ID0setuser();
}

void
ID0logout(const struct utmpx *ut)
{
  ID0set0();
  pututxline(ut);
  log_Printf(LogID0, "pututxline(\"%.*s\")\n",
      (int)sizeof ut->ut_id, ut->ut_id);
  ID0setuser();
}

int
ID0bind_un(int s, const struct sockaddr_un *name)
{
  int result;

ID0set0();
  result = bind(s, (const struct sockaddr *)name, sizeof *name);
  log_Printf(LogID0, "%d = bind(%d, \"%s\", %d)\n",
            result, s, name->sun_path, (int)sizeof(*name));
  ID0setuser();
  return result;
}

int
ID0connect_un(int s, const struct sockaddr_un *name)
{
  int result;

ID0set0();
  result = connect(s, (const struct sockaddr *)name, sizeof *name);
  log_Printf(LogID0, "%d = connect(%d, \"%s\", %d)\n",
            result, s, name->sun_path, (int)sizeof(*name));
  ID0setuser();
  return result;
}

int
ID0kill(pid_t pid, int sig)
{
  int result;

ID0set0();
  result = kill(pid, sig);
  log_Printf(LogID0, "%d = kill(%ld, %d)\n", result, (long)pid, sig);
  ID0setuser();
  return result;
}

#if defined(__FreeBSD__) && !defined(NOKLDLOAD)
int
ID0kldload(const char *dev)
{
  int result;

ID0set0();
  result = kldload(dev);
  log_Printf(LogID0, "%d = kldload(\"%s\")\n", result, dev);
  ID0setuser();
  return result;
}
#endif

#ifndef NONETGRAPH
int
ID0NgMkSockNode(const char *name, int *cs, int *ds)
{
  int result;

ID0set0();
  result = NgMkSockNode(name, cs, ds);
  log_Printf(LogID0, "%d = NgMkSockNode(\"%s\", &cs, &ds)\n",
             result, name ? name : "");
  ID0setuser();
  return result;
}
#endif

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Editing: id.c

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