loginrec.h

   1 #ifndef _HAVE_LOGINREC_H_
   2 #define _HAVE_LOGINREC_H_
   3
   4 /*
   5  * Copyright (c) 2000 Andre Lucas.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26  */
  27
  28 /**
  29  ** loginrec.h:  platform-independent login recording and lastlog retrieval
  30  **/
  31
  32 #include "includes.h"
  33
  34 /**
  35  ** you should use the login_* calls to work around platform dependencies
  36  **/
  37
  38 /*
  39  * login_netinfo structure
  40  */
  41
  42 union login_netinfo {
  43         struct sockaddr sa;
  44         struct sockaddr_in sa_in;
  45         struct sockaddr_storage sa_storage;
  46 };
  47
  48 /*
  49  *   * logininfo structure  *
  50  */
  51 /* types - different to utmp.h 'type' macros */
  52 /* (though set to the same value as linux, openbsd and others...) */
  53 #define LTYPE_LOGIN    7
  54 #define LTYPE_LOGOUT   8
  55
  56 /* string lengths - set very long */
  57 #define LINFO_PROGSIZE 64
  58 #define LINFO_LINESIZE 64
  59 #define LINFO_NAMESIZE 128
  60 #define LINFO_HOSTSIZE 256
  61
  62 struct logininfo {
  63         char       progname[LINFO_PROGSIZE];     /* name of program (for PAM) */
  64         int        progname_null;
  65         short int  type;                         /* type of login (LTYPE_*) */
  66         int        pid;                          /* PID of login process */
  67         int        uid;                          /* UID of this user */
  68         char       line[LINFO_LINESIZE];         /* tty/pty name */
  69         char       username[LINFO_NAMESIZE];     /* login username */
  70         char       hostname[LINFO_HOSTSIZE];     /* remote hostname */
  71         /* 'exit_status' structure components */
  72         int        exit;                        /* process exit status */
  73         int        termination;                 /* process termination status */
  74         /* struct timeval (sys/time.h) isn't always available, if it isn't we'll
  75          * use time_t's value as tv_sec and set tv_usec to 0
  76          */
  77         unsigned int tv_sec;
  78         unsigned int tv_usec;
  79         union login_netinfo hostaddr;       /* caller's host address(es) */
  80 }; /* struct logininfo */
  81
  82 /*
  83  * login recording functions
  84  */
  85
  86 /** 'public' functions */
  87
  88 /* construct a new login entry */
  89 struct logininfo *login_alloc_entry(int pid, const char *username,
  90                                     const char *hostname, const char *line);
  91 /* free a structure */
  92 void login_free_entry(struct logininfo *li);
  93 /* fill out a pre-allocated structure with useful information */
  94 int login_init_entry(struct logininfo *li, int pid, const char *username,
  95                      const char *hostname, const char *line);
  96 /* place the current time in a logininfo struct */
  97 void login_set_current_time(struct logininfo *li);
  98
  99 /* record the entry */
 100 int login_login (struct logininfo *li);
 101 int login_logout(struct logininfo *li);
 102 #ifdef LOGIN_NEEDS_UTMPX
 103 int login_utmp_only(struct logininfo *li);
 104 #endif
 105
 106 /** End of public functions */
 107
 108 /* record the entry */
 109 int login_write (struct logininfo *li);
 110 int login_log_entry(struct logininfo *li);
 111
 112 /* set the network address based on network address type */
 113 void login_set_addr(struct logininfo *li, const struct sockaddr *sa,
 114                     const unsigned int sa_size);
 115
 116 /*
 117  * lastlog retrieval functions
 118  */
 119 /* lastlog *entry* functions fill out a logininfo */
 120 struct logininfo *login_get_lastlog(struct logininfo *li, const int uid);
 121 /* lastlog *time* functions return time_t equivalent (uint) */
 122 unsigned int login_get_lastlog_time(const int uid);
 123
 124 /* produce various forms of the line filename */
 125 char *line_fullname(char *dst, const char *src, u_int dstsize);
 126 char *line_stripname(char *dst, const char *src, int dstsize);
 127 char *line_abbrevname(char *dst, const char *src, int dstsize);
 128
 129 void record_failed_login(const char *, const char *, const char *);
 130
 131 #endif /* _HAVE_LOGINREC_H_ */