1/* login.c: The opielogin() library function.
2
3%%% copyright-cmetz-96
4This software is Copyright 1996-2001 by Craig Metz, All Rights Reserved.
5The Inner Net License Version 3 applies to this software.
6You should have received a copy of the license with this software. If
7you didn't get a copy, you may request one from <license@inner.net>.
8
9        History:
10
11	Modified by cmetz for OPIE 2.4. Add support for ut_id and
12		ut_syslen. Don't zero-terminate ut_name and ut_host.
13	Modified by cmetz for OPIE 2.31. If the OS won't tell us where
14		_PATH_WTMP[X] is, try playing the SVID game, then use
15		Autoconf-discovered values. Fixed gettimeofday() call
16		and updwtmpx() call. Call endutxent for utmpx. Added
17		DISABLE_UTMP.
18        Created by cmetz for OPIE 2.3.
19*/
20
21#include "opie_cfg.h"
22#include <stdio.h>
23#include <sys/types.h>
24
25#if DOUTMPX
26#include <utmpx.h>
27#define pututline(x) pututxline(x)
28#define endutent endutxent
29#define utmp utmpx
30#else
31#include <utmp.h>
32#endif /* DOUTMPX */
33
34#if HAVE_STRING_H
35#include <string.h>
36#endif /* HAVE_STRING_H */
37#include <sys/stat.h>
38#if DEBUG
39#include <syslog.h>
40#include <errno.h>
41#endif /* DEBUG */
42#include "opie.h"
43
44#define IDLEN 4
45
46int opielogin FUNCTION((line, name, host), char *line AND char *name AND char *host)
47{
48  int rval = 0;
49#if !DISABLE_UTMP
50  struct utmp u;
51  char id[IDLEN + 1] = "";
52
53  if (__opiegetutmpentry(line, &u)) {
54#if DEBUG
55    syslog(LOG_DEBUG, "opielogin: __opiegetutmpentry(line=%s, &u) failed", line);
56#endif /* DEBUG */
57    memset(&u, 0, sizeof(struct utmp));
58    if (!strncmp(line, "/dev/", 5))
59      strncpy(u.ut_line, line + 5, sizeof(u.ut_line));
60    else
61      strncpy(u.ut_line, line, sizeof(u.ut_line));
62#if DEBUG
63    syslog(LOG_DEBUG, "opielogin: continuing with ut_line=%s", u.ut_line);
64#endif /* DEBUG */
65  }
66
67#if DOUTMPX || HAVE_UT_ID
68  strncpy(id, u.ut_id, sizeof(u.ut_id));
69  id[sizeof(id)-1] = 0;
70#endif /* DOUTMPX || HAVE_UT_ID */
71
72#if HAVE_UT_TYPE && defined(USER_PROCESS)
73  u.ut_type = USER_PROCESS;
74#endif /* HAVE_UT_TYPE && defined(USER_PROCESS) */
75#if HAVE_UT_PID
76  u.ut_pid = getpid();
77#endif /* HAVE_UT_PID */
78
79#if HAVE_UT_NAME
80  strncpy(u.ut_name, name, sizeof(u.ut_name));
81#else /* HAVE_UT_NAME */
82#error No ut_name field in struct utmp? (Please send in a bug report)
83#endif /* HAVE_UT_NAME */
84
85#if HAVE_UT_HOST
86  strncpy(u.ut_host, host, sizeof(u.ut_host));
87#endif /* HAVE_UT_HOST */
88#if DOUTMPX && HAVE_UTX_SYSLEN
89  u.ut_syslen = strlen(host) + 1;
90#endif /* DOUTMPX && HAVE_UT_SYSLEN */
91
92#if DOUTMPX
93#ifdef HAVE_ONE_ARG_GETTIMEOFDAY
94  gettimeofday(&u.ut_tv);
95#else /* HAVE_ONE_ARG_GETTIMEOFDAY */
96  gettimeofday(&u.ut_tv, NULL);
97#endif /* HAVE_ONE_ARG_GETTIMEOFDAY */
98#else /* DOUTMPX */
99  time(&u.ut_time);
100#endif /* DOUTMPX */
101
102  pututline(&u);
103  endutent();
104
105#if DEBUG
106  syslog(LOG_DEBUG, "opielogin: utmp suceeded");
107#endif /* DEBUG */
108#endif /* !DISABLE_UTMP */
109
110dowtmp:
111  opielogwtmp(line, name, host, id);
112  opielogwtmp(NULL, NULL, NULL);
113
114dosetlogin:
115#if HAVE_SETLOGIN
116  setlogin(name);
117#endif /* HAVE_SETLOGIN */
118
119#if DEBUG
120  syslog(LOG_DEBUG, "opielogin: rval=%d", rval);
121#endif /* DEBUG */
122
123  return rval;
124}
125