release/src/router/dropbear/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 /* RCSID("Id: loginrec.h,v 1.2 2004/05/04 10:17:43 matt Exp "); */
  35
  36 /* The following #defines are from OpenSSH's defines.h, required for loginrec */
  37
  38 /* FIXME: put default paths back in */
  39 #ifndef UTMP_FILE
  40 #  ifdef _PATH_UTMP
  41 #    define UTMP_FILE _PATH_UTMP
  42 #  else
  43 #    ifdef CONF_UTMP_FILE
  44 #      define UTMP_FILE CONF_UTMP_FILE
  45 #    endif
  46 #  endif
  47 #endif
  48 #ifndef WTMP_FILE
  49 #  ifdef _PATH_WTMP
  50 #    define WTMP_FILE _PATH_WTMP
  51 #  else
  52 #    ifdef CONF_WTMP_FILE
  53 #      define WTMP_FILE CONF_WTMP_FILE
  54 #    endif
  55 #  endif
  56 #endif
  57 /* pick up the user's location for lastlog if given */
  58 #ifndef LASTLOG_FILE
  59 #  ifdef _PATH_LASTLOG
  60 #    define LASTLOG_FILE _PATH_LASTLOG
  61 #  else
  62 #    ifdef CONF_LASTLOG_FILE
  63 #      define LASTLOG_FILE CONF_LASTLOG_FILE
  64 #    endif
  65 #  endif
  66 #endif
  67
  68
  69 /* The login() library function in libutil is first choice */
  70 #if defined(HAVE_LOGIN) && !defined(DISABLE_LOGIN)
  71 #  define USE_LOGIN
  72
  73 #else
  74 /* Simply select your favourite login types. */
  75 /* Can't do if-else because some systems use several... <sigh> */
  76 #  if defined(UTMPX_FILE) && !defined(DISABLE_UTMPX)
  77 #    define USE_UTMPX
  78 #  endif
  79 #  if defined(UTMP_FILE) && !defined(DISABLE_UTMP)
  80 #    define USE_UTMP
  81 #  endif
  82 #  if defined(WTMPX_FILE) && !defined(DISABLE_WTMPX)
  83 #    define USE_WTMPX
  84 #  endif
  85 #  if defined(WTMP_FILE) && !defined(DISABLE_WTMP)
  86 #    define USE_WTMP
  87 #  endif
  88
  89 #endif
  90
  91 /* I hope that the presence of LASTLOG_FILE is enough to detect this */
  92 #if defined(LASTLOG_FILE) && !defined(DISABLE_LASTLOG)
  93 #  define USE_LASTLOG
  94 #endif
  95
  96
  97 /**
  98  ** you should use the login_* calls to work around platform dependencies
  99  **/
 100
 101 /*
 102  * login_netinfo structure
 103  */
 104
 105 union login_netinfo {
 106         struct sockaddr sa;
 107         struct sockaddr_in sa_in;
 108 #ifdef HAVE_STRUCT_SOCKADDR_STORAGE
 109         struct sockaddr_storage sa_storage;
 110 #endif
 111 };
 112
 113 /*
 114  *   * logininfo structure  *
 115  */
 116 /* types - different to utmp.h 'type' macros */
 117 /* (though set to the same value as linux, openbsd and others...) */
 118 #define LTYPE_LOGIN    7
 119 #define LTYPE_LOGOUT   8
 120
 121 /* string lengths - set very long */
 122 #define LINFO_PROGSIZE 64
 123 #define LINFO_LINESIZE 64
 124 #define LINFO_NAMESIZE 64
 125 #define LINFO_HOSTSIZE 256
 126
 127 struct logininfo {
 128         char       progname[LINFO_PROGSIZE];     /* name of program (for PAM) */
 129         int        progname_null;
 130         short int  type;                         /* type of login (LTYPE_*) */
 131         int        pid;                          /* PID of login process */
 132         int        uid;                          /* UID of this user */
 133         char       line[LINFO_LINESIZE];         /* tty/pty name */
 134         char       username[LINFO_NAMESIZE];     /* login username */
 135         char       hostname[LINFO_HOSTSIZE];     /* remote hostname */
 136         /* 'exit_status' structure components */
 137         int        exit;                        /* process exit status */
 138         int        termination;                 /* process termination status */
 139         /* struct timeval (sys/time.h) isn't always available, if it isn't we'll
 140          * use time_t's value as tv_sec and set tv_usec to 0
 141          */
 142         unsigned int tv_sec;
 143         unsigned int tv_usec;
 144         union login_netinfo hostaddr;       /* caller's host address(es) */
 145 }; /* struct logininfo */
 146
 147 /*
 148  * login recording functions
 149  */
 150
 151 /** 'public' functions */
 152
 153 struct logininfo *login_alloc_entry(int pid, const char *username,
 154                                     const char *hostname, const char *line);
 155 /* free a structure */
 156 void login_free_entry(struct logininfo *li);
 157 /* fill out a pre-allocated structure with useful information */
 158 int login_init_entry(struct logininfo *li, int pid, const char *username,
 159                      const char *hostname, const char *line);
 160 /* place the current time in a logininfo struct */
 161 void login_set_current_time(struct logininfo *li);
 162
 163 /* record the entry */
 164 int login_login (struct logininfo *li);
 165 int login_logout(struct logininfo *li);
 166 #ifdef LOGIN_NEEDS_UTMPX
 167 int login_utmp_only(struct logininfo *li);
 168 #endif
 169
 170 /** End of public functions */
 171
 172 /* record the entry */
 173 int login_write (struct logininfo *li);
 174 int login_log_entry(struct logininfo *li);
 175
 176 /* set the network address based on network address type */
 177 void login_set_addr(struct logininfo *li, const struct sockaddr *sa,
 178                     const unsigned int sa_size);
 179
 180 /* produce various forms of the line filename */
 181 char *line_fullname(char *dst, const char *src, size_t dstsize);
 182 char *line_stripname(char *dst, const char *src, size_t dstsize);
 183 char *line_abbrevname(char *dst, const char *src, size_t dstsize);
 184
 185 #endif /* _HAVE_LOGINREC_H_ */