contrib/opie/libopie/login.c

   1 /* login.c: The opielogin() library function.
   2
   3 %%% copyright-cmetz-96
   4 This software is Copyright 1996-2001 by Craig Metz, All Rights Reserved.
   5 The Inner Net License Version 3 applies to this software.
   6 You should have received a copy of the license with this software. If
   7 you 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 #include <utmp.h>
  25
  26 #if DOUTMPX
  27 #include <utmpx.h>
  28 #define pututline(x) pututxline(x)
  29 #define endutent endutxent
  30 #define utmp utmpx
  31 #endif /* DOUTMPX */
  32
  33 #if HAVE_STRING_H
  34 #include <string.h>
  35 #endif /* HAVE_STRING_H */
  36 #include <sys/stat.h>
  37 #if DEBUG
  38 #include <syslog.h>
  39 #include <errno.h>
  40 #endif /* DEBUG */
  41 #include "opie.h"
  42
  43 #define IDLEN 4
  44
  45 int opielogin FUNCTION((line, name, host), char *line AND char *name AND char *host)
  46 {
  47   int rval = 0;
  48 #if !DISABLE_UTMP
  49   struct utmp u;
  50   char id[IDLEN + 1] = "";
  51
  52   if (__opiegetutmpentry(line, &u)) {
  53 #if DEBUG
  54     syslog(LOG_DEBUG, "opielogin: __opiegetutmpentry(line=%s, &u) failed", line);
  55 #endif /* DEBUG */
  56     memset(&u, 0, sizeof(struct utmp));
  57     if (!strncmp(line, "/dev/", 5))
  58       strncpy(u.ut_line, line + 5, sizeof(u.ut_line));
  59     else
  60       strncpy(u.ut_line, line, sizeof(u.ut_line));
  61 #if DEBUG
  62     syslog(LOG_DEBUG, "opielogin: continuing with ut_line=%s", u.ut_line);
  63 #endif /* DEBUG */
  64   }
  65
  66 #if DOUTMPX || HAVE_UT_ID
  67   strncpy(id, u.ut_id, sizeof(u.ut_id));
  68   id[sizeof(id)-1] = 0;
  69 #endif /* DOUTMPX || HAVE_UT_ID */
  70
  71 #if HAVE_UT_TYPE && defined(USER_PROCESS)
  72   u.ut_type = USER_PROCESS;
  73 #endif /* HAVE_UT_TYPE && defined(USER_PROCESS) */
  74 #if HAVE_UT_PID
  75   u.ut_pid = getpid();
  76 #endif /* HAVE_UT_PID */
  77
  78 #if HAVE_UT_NAME
  79   strncpy(u.ut_name, name, sizeof(u.ut_name));
  80 #else /* HAVE_UT_NAME */
  81 #error No ut_name field in struct utmp? (Please send in a bug report)
  82 #endif /* HAVE_UT_NAME */
  83
  84 #if HAVE_UT_HOST
  85   strncpy(u.ut_host, host, sizeof(u.ut_host));
  86 #endif /* HAVE_UT_HOST */
  87 #if DOUTMPX && HAVE_UTX_SYSLEN
  88   u.ut_syslen = strlen(host) + 1;
  89 #endif /* DOUTMPX && HAVE_UT_SYSLEN */
  90
  91 #if DOUTMPX
  92 #ifdef HAVE_ONE_ARG_GETTIMEOFDAY
  93   gettimeofday(&u.ut_tv);
  94 #else /* HAVE_ONE_ARG_GETTIMEOFDAY */
  95   gettimeofday(&u.ut_tv, NULL);
  96 #endif /* HAVE_ONE_ARG_GETTIMEOFDAY */
  97 #else /* DOUTMPX */
  98   time(&u.ut_time);
  99 #endif /* DOUTMPX */
 100
 101   pututline(&u);
 102   endutent();
 103
 104 #if DEBUG
 105   syslog(LOG_DEBUG, "opielogin: utmp suceeded");
 106 #endif /* DEBUG */
 107 #endif /* !DISABLE_UTMP */
 108
 109 dowtmp:
 110   opielogwtmp(line, name, host, id);
 111   opielogwtmp(NULL, NULL, NULL);
 112
 113 dosetlogin:
 114 #if HAVE_SETLOGIN
 115   setlogin(name);
 116 #endif /* HAVE_SETLOGIN */
 117
 118 #if DEBUG
 119   syslog(LOG_DEBUG, "opielogin: rval=%d", rval);
 120 #endif /* DEBUG */
 121
 122   return rval;
 123 }