id.c revision 31061 
1/*
2 * $Id: defs.c,v 1.1 1997/10/26 01:02:30 brian Exp $
3 */
4
5#include <sys/types.h>
6#include <sys/socket.h>
7
8#include <sys/ioctl.h>
9#include <fcntl.h>
10#include <stdio.h>
11#include <stdlib.h>
12#include <sysexits.h>
13#include <unistd.h>
14
15#include "mbuf.h"
16#include "log.h"
17#include "main.h"
18#ifdef __OpenBSD__
19#include <util.h>
20#else
21#include <libutil.h>
22#endif
23#include "id.h"
24
25static int uid;
26static int gid;
27static int euid;
28static int egid;
29
30void
31ID0init()
32{
33  uid = getuid();
34  gid = getgid();
35  euid = geteuid();
36  egid = getegid();
37}
38
39static void
40ID0setuser()
41{
42  if (setreuid(euid, uid) == -1) {
43    LogPrintf(LogERROR, "ID0setuser: Unable to setreuid!\n");
44    Cleanup(EX_NOPERM);
45  }
46}
47
48uid_t
49ID0realuid()
50{
51  return uid;
52}
53
54static void
55ID0set0()
56{
57  if (setreuid(uid, euid) == -1) {
58    LogPrintf(LogERROR, "ID0set0: Unable to setreuid!\n");
59    Cleanup(EX_NOPERM);
60  }
61}
62
63int
64ID0ioctl(int fd, unsigned long req, void *arg)
65{
66  int ret;
67
68  ID0set0();
69  ret = ioctl(fd, req, arg);
70  LogPrintf(LogID0, "%d = ioctl(%d, %d, %p)\n", ret, fd, req, arg);
71  ID0setuser();
72  return ret;
73}
74
75int
76ID0unlink(const char *name)
77{
78  int ret;
79
80  ID0set0();
81  ret = unlink(name);
82  LogPrintf(LogID0, "%d = unlink(\"%s\")\n", ret, name);
83  ID0setuser();
84  return ret;
85}
86
87int
88ID0socket(int domain, int type, int protocol)
89{
90  int ret;
91
92  ID0set0();
93  ret = socket(domain, type, protocol);
94  LogPrintf(LogID0, "%d = socket(%d, %d, %d)\n", ret, domain, type, protocol);
95  ID0setuser();
96  return ret;
97}
98
99FILE *
100ID0fopen(const char *path, const char *mode)
101{
102  FILE *ret;
103
104  ID0set0();
105  ret = fopen(path, mode);
106  LogPrintf(LogID0, "%p = fopen(\"%s\", \"%s\")\n", ret, path, mode);
107  ID0setuser();
108  return ret;
109}
110
111int
112ID0open(const char *path, int flags)
113{
114  int ret;
115
116  ID0set0();
117  ret = open(path, flags);
118  LogPrintf(LogID0, "%d = open(\"%s\", %d)\n", ret, path, flags);
119  ID0setuser();
120  return ret;
121}
122
123int
124ID0uu_lock(const char *ttyname)
125{
126  int ret;
127
128  ID0set0();
129  ret = uu_lock(ttyname);
130  LogPrintf(LogID0, "%d = uu_lock(\"%s\")\n", ret, ttyname);
131  ID0setuser();
132  return ret;
133}
134
135int
136ID0uu_unlock(const char *ttyname)
137{
138  int ret;
139
140  ID0set0();
141  ret = uu_unlock(ttyname);
142  LogPrintf(LogID0, "%d = uu_unlock(\"%s\")\n", ret, ttyname);
143  ID0setuser();
144  return ret;
145}
146