| 1 | /*
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| 2 | Unix SMB/CIFS implementation.
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| 3 | utmp routines
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| 4 | Copyright (C) T.D.Lee@durham.ac.uk 1999
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| 5 | Heavily modified by Andrew Bartlett and Tridge, April 2001
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| 6 |
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| 7 | This program is free software; you can redistribute it and/or modify
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| 8 | it under the terms of the GNU General Public License as published by
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| 9 | the Free Software Foundation; either version 3 of the License, or
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| 10 | (at your option) any later version.
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| 11 |
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| 12 | This program is distributed in the hope that it will be useful,
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| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | GNU General Public License for more details.
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| 16 |
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| 17 | You should have received a copy of the GNU General Public License
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| 18 | along with this program. If not, see <http://www.gnu.org/licenses/>.
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| 19 | */
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| 20 |
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| 21 | #include "includes.h"
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| 22 |
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| 23 | /****************************************************************************
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| 24 | Reflect connection status in utmp/wtmp files.
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| 25 | T.D.Lee@durham.ac.uk September 1999
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| 26 |
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| 27 | With grateful thanks since then to many who have helped port it to
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| 28 | different operating systems. The variety of OS quirks thereby
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| 29 | uncovered is amazing...
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| 30 |
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| 31 | Hints for porting:
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| 32 | o Always attempt to use programmatic interface (pututline() etc.)
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| 33 | Indeed, at present only programmatic use is supported.
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| 34 | o The only currently supported programmatic interface to "wtmp{,x}"
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| 35 | is through "updwtmp*()" routines.
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| 36 | o The "x" (utmpx/wtmpx; HAVE_UTMPX_H) seems preferable.
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| 37 | o The HAVE_* items should identify supported features.
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| 38 | o If at all possible, avoid "if defined(MY-OS)" constructions.
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| 39 |
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| 40 | OS observations and status:
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| 41 | Almost every OS seems to have its own quirks.
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| 42 |
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| 43 | Solaris 2.x:
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| 44 | Tested on 2.6 and 2.7; should be OK on other flavours.
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| 45 | AIX:
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| 46 | Apparently has utmpx.h but doesn't implement.
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| 47 | OSF:
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| 48 | Has utmpx.h, but (e.g.) no "getutmpx()". (Is this like AIX ?)
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| 49 | Redhat 6:
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| 50 | utmpx.h seems not to set default filenames. non-x better.
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| 51 | IRIX 6.5:
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| 52 | Not tested. Appears to have "x".
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| 53 | HP-UX 9.x:
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| 54 | Not tested. Appears to lack "x".
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| 55 | HP-UX 10.x:
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| 56 | Not tested.
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| 57 | "updwtmp*()" routines seem absent, so no current wtmp* support.
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| 58 | Has "ut_addr": probably trivial to implement (although remember
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| 59 | that IPv6 is coming...).
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| 60 |
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| 61 | FreeBSD:
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| 62 | No "putut*()" type of interface.
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| 63 | No "ut_type" and associated defines.
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| 64 | Write files directly. Alternatively use its login(3)/logout(3).
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| 65 | SunOS 4:
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| 66 | Not tested. Resembles FreeBSD, but no login()/logout().
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| 67 |
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| 68 | lastlog:
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| 69 | Should "lastlog" files, if any, be updated?
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| 70 | BSD systems (SunOS 4, FreeBSD):
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| 71 | o Prominent mention on man pages.
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| 72 | System-V (e.g. Solaris 2):
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| 73 | o No mention on man pages, even under "man -k".
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| 74 | o Has a "/var/adm/lastlog" file, but pututxline() etc. seem
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| 75 | not to touch it.
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| 76 | o Despite downplaying (above), nevertheless has <lastlog.h>.
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| 77 | So perhaps UN*X "lastlog" facility is intended for tty/terminal only?
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| 78 |
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| 79 | Notes:
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| 80 | Each connection requires a small number (starting at 0, working up)
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| 81 | to represent the line. This must be unique within and across all
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| 82 | smbd processes. It is the 'id_num' from Samba's session.c code.
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| 83 |
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| 84 | The 4 byte 'ut_id' component is vital to distinguish connections,
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| 85 | of which there could be several hundred or even thousand.
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| 86 | Entries seem to be printable characters, with optional NULL pads.
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| 87 |
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| 88 | We need to be distinct from other entries in utmp/wtmp.
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| 89 |
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| 90 | Observed things: therefore avoid them. Add to this list please.
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| 91 | From Solaris 2.x (because that's what I have):
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| 92 | 'sN' : run-levels; N: [0-9]
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| 93 | 'co' : console
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| 94 | 'CC' : arbitrary things; C: [a-z]
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| 95 | 'rXNN' : rlogin; N: [0-9]; X: [0-9a-z]
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| 96 | 'tXNN' : rlogin; N: [0-9]; X: [0-9a-z]
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| 97 | '/NNN' : Solaris CDE
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| 98 | 'ftpZ' : ftp (Z is the number 255, aka 0377, aka 0xff)
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| 99 | Mostly a record uses the same 'ut_id' in both "utmp" and "wtmp",
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| 100 | but differences have been seen.
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| 101 |
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| 102 | Arbitrarily I have chosen to use a distinctive 'SM' for the
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| 103 | first two bytes.
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| 104 |
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| 105 | The remaining two bytes encode the session 'id_num' (see above).
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| 106 | Our caller (session.c) should note our 16-bit limitation.
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| 107 |
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| 108 | ****************************************************************************/
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| 109 |
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| 110 | #ifndef WITH_UTMP
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| 111 | /*
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| 112 | * Not WITH_UTMP? Simply supply dummy routines.
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| 113 | */
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| 114 |
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| 115 | void sys_utmp_claim(const char *username, const char *hostname,
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| 116 | const char *ip_addr_str,
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| 117 | const char *id_str, int id_num)
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| 118 | {}
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| 119 |
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| 120 | void sys_utmp_yield(const char *username, const char *hostname,
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| 121 | const char *ip_addr_str,
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| 122 | const char *id_str, int id_num)
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| 123 | {}
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| 124 |
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| 125 | #else /* WITH_UTMP */
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| 126 |
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| 127 | #include <utmp.h>
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| 128 |
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| 129 | #ifdef HAVE_UTMPX_H
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| 130 | #include <utmpx.h>
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| 131 | #endif
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| 132 |
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| 133 | /* BSD systems: some may need lastlog.h (SunOS 4), some may not (FreeBSD) */
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| 134 | /* Some System-V systems (e.g. Solaris 2) declare this too. */
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| 135 | #ifdef HAVE_LASTLOG_H
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| 136 | #include <lastlog.h>
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| 137 | #endif
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| 138 |
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| 139 | /****************************************************************************
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| 140 | Default paths to various {u,w}tmp{,x} files.
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| 141 | ****************************************************************************/
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| 142 |
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| 143 | #ifdef HAVE_UTMPX_H
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| 144 |
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| 145 | static const char *ux_pathname =
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| 146 | # if defined (UTMPX_FILE)
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| 147 | UTMPX_FILE ;
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| 148 | # elif defined (_UTMPX_FILE)
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| 149 | _UTMPX_FILE ;
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| 150 | # elif defined (_PATH_UTMPX)
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| 151 | _PATH_UTMPX ;
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| 152 | # else
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| 153 | "" ;
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| 154 | # endif
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| 155 |
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| 156 | static const char *wx_pathname =
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| 157 | # if defined (WTMPX_FILE)
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| 158 | WTMPX_FILE ;
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| 159 | # elif defined (_WTMPX_FILE)
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| 160 | _WTMPX_FILE ;
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| 161 | # elif defined (_PATH_WTMPX)
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| 162 | _PATH_WTMPX ;
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| 163 | # else
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| 164 | "" ;
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| 165 | # endif
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| 166 |
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| 167 | #endif /* HAVE_UTMPX_H */
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| 168 |
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| 169 | static const char *ut_pathname =
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| 170 | # if defined (UTMP_FILE)
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| 171 | UTMP_FILE ;
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| 172 | # elif defined (_UTMP_FILE)
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| 173 | _UTMP_FILE ;
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| 174 | # elif defined (_PATH_UTMP)
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| 175 | _PATH_UTMP ;
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| 176 | # else
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| 177 | "" ;
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| 178 | # endif
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| 179 |
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| 180 | static const char *wt_pathname =
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| 181 | # if defined (WTMP_FILE)
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| 182 | WTMP_FILE ;
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| 183 | # elif defined (_WTMP_FILE)
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| 184 | _WTMP_FILE ;
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| 185 | # elif defined (_PATH_WTMP)
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| 186 | _PATH_WTMP ;
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| 187 | # else
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| 188 | "" ;
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| 189 | # endif
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| 190 |
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| 191 | /* BSD-like systems might want "lastlog" support. */
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| 192 | /* *** Not yet implemented */
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| 193 | #ifndef HAVE_PUTUTLINE /* see "pututline_my()" */
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| 194 | static const char *ll_pathname =
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| 195 | # if defined (_PATH_LASTLOG) /* what other names (if any?) */
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| 196 | _PATH_LASTLOG ;
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| 197 | # else
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| 198 | "" ;
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| 199 | # endif /* _PATH_LASTLOG */
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| 200 | #endif /* HAVE_PUTUTLINE */
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| 201 |
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| 202 | /*
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| 203 | * Get name of {u,w}tmp{,x} file.
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| 204 | * return: fname contains filename
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| 205 | * Possibly empty if this code not yet ported to this system.
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| 206 | *
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| 207 | * utmp{,x}: try "utmp dir", then default (a define)
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| 208 | * wtmp{,x}: try "wtmp dir", then "utmp dir", then default (a define)
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| 209 | */
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| 210 | static char *uw_pathname(TALLOC_CTX *ctx,
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| 211 | const char *uw_name,
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| 212 | const char *uw_default)
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| 213 | {
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| 214 | char *dirname = NULL;
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| 215 |
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| 216 | /* For w-files, first look for explicit "wtmp dir" */
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| 217 | if (uw_name[0] == 'w') {
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| 218 | dirname = talloc_strdup(ctx, lp_wtmpdir());
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| 219 | if (!dirname) {
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| 220 | return NULL;
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| 221 | }
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| 222 | trim_char(dirname,'\0','/');
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| 223 | }
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| 224 |
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| 225 | /* For u-files and non-explicit w-dir, look for "utmp dir" */
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| 226 | if ((dirname == NULL) || (strlen(dirname) == 0)) {
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| 227 | dirname = talloc_strdup(ctx, lp_utmpdir());
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| 228 | if (!dirname) {
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| 229 | return NULL;
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| 230 | }
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| 231 | trim_char(dirname,'\0','/');
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| 232 | }
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| 233 |
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| 234 | /* If explicit directory above, use it */
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| 235 | if (dirname && strlen(dirname) != 0) {
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| 236 | return talloc_asprintf(ctx,
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| 237 | "%s/%s",
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| 238 | dirname,
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| 239 | uw_name);
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| 240 | }
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| 241 |
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| 242 | /* No explicit directory: attempt to use default paths */
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| 243 | if (strlen(uw_default) == 0) {
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| 244 | /* No explicit setting, no known default.
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| 245 | * Has it yet been ported to this OS?
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| 246 | */
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| 247 | DEBUG(2,("uw_pathname: unable to determine pathname\n"));
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| 248 | }
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| 249 | return talloc_strdup(ctx, uw_default);
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| 250 | }
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| 251 |
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| 252 | #ifndef HAVE_PUTUTLINE
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| 253 | /****************************************************************************
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| 254 | Update utmp file directly. No subroutine interface: probably a BSD system.
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| 255 | ****************************************************************************/
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| 256 |
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| 257 | static void pututline_my(const char *uname, struct utmp *u, bool claim)
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| 258 | {
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| 259 | DEBUG(1,("pututline_my: not yet implemented\n"));
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| 260 | /* BSD implementor: may want to consider (or not) adjusting "lastlog" */
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| 261 | }
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| 262 | #endif /* HAVE_PUTUTLINE */
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| 263 |
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| 264 | #ifndef HAVE_UPDWTMP
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| 265 |
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| 266 | /****************************************************************************
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| 267 | Update wtmp file directly. No subroutine interface: probably a BSD system.
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| 268 | Credit: Michail Vidiassov <master@iaas.msu.ru>
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| 269 | ****************************************************************************/
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| 270 |
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| 271 | static void updwtmp_my(const char *wname, struct utmp *u, bool claim)
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| 272 | {
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| 273 | int fd;
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| 274 | struct stat buf;
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| 275 |
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| 276 | if (! claim) {
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| 277 | /*
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| 278 | * BSD-like systems:
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| 279 | * may use empty ut_name to distinguish a logout record.
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| 280 | *
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| 281 | * May need "if defined(SUNOS4)" etc. around some of these,
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| 282 | * but try to avoid if possible.
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| 283 | *
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| 284 | * SunOS 4:
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| 285 | * man page indicates ut_name and ut_host both NULL
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| 286 | * FreeBSD 4.0:
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| 287 | * man page appears not to specify (hints non-NULL)
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| 288 | * A correspondent suggest at least ut_name should be NULL
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| 289 | */
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| 290 | #if defined(HAVE_UT_UT_NAME)
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| 291 | memset((char *)&u->ut_name, '\0', sizeof(u->ut_name));
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| 292 | #endif
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| 293 | #if defined(HAVE_UT_UT_HOST)
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| 294 | memset((char *)&u->ut_host, '\0', sizeof(u->ut_host));
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| 295 | #endif
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| 296 | }
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| 297 | /* Stolen from logwtmp function in libutil.
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| 298 | * May be more locking/blocking is needed?
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| 299 | */
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| 300 | if ((fd = open(wname, O_WRONLY|O_APPEND, 0)) < 0)
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| 301 | return;
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| 302 | if (fstat(fd, &buf) == 0) {
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| 303 | if (write(fd, (char *)u, sizeof(struct utmp)) != sizeof(struct utmp))
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| 304 | (void) ftruncate(fd, buf.st_size);
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| 305 | }
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| 306 | (void) close(fd);
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| 307 | }
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| 308 | #endif /* HAVE_UPDWTMP */
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| 309 |
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| 310 | /****************************************************************************
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| 311 | Update via utmp/wtmp (not utmpx/wtmpx).
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| 312 | ****************************************************************************/
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| 313 |
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| 314 | static void utmp_nox_update(struct utmp *u, bool claim)
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| 315 | {
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| 316 | char *uname = NULL;
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| 317 | char *wname = NULL;
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| 318 | #if defined(PUTUTLINE_RETURNS_UTMP)
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| 319 | struct utmp *urc;
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| 320 | #endif /* PUTUTLINE_RETURNS_UTMP */
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| 321 |
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| 322 | uname = uw_pathname(talloc_tos(), "utmp", ut_pathname);
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| 323 | if (!uname) {
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| 324 | return;
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| 325 | }
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| 326 | DEBUG(2,("utmp_nox_update: uname:%s\n", uname));
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| 327 |
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| 328 | #ifdef HAVE_PUTUTLINE
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| 329 | if (strlen(uname) != 0) {
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| 330 | utmpname(uname);
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| 331 | }
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| 332 |
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| 333 | # if defined(PUTUTLINE_RETURNS_UTMP)
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| 334 | setutent();
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| 335 | urc = pututline(u);
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| 336 | endutent();
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| 337 | if (urc == NULL) {
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| 338 | DEBUG(2,("utmp_nox_update: pututline() failed\n"));
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| 339 | return;
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| 340 | }
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| 341 | # else /* PUTUTLINE_RETURNS_UTMP */
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| 342 | setutent();
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| 343 | pututline(u);
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| 344 | endutent();
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| 345 | # endif /* PUTUTLINE_RETURNS_UTMP */
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| 346 |
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| 347 | #else /* HAVE_PUTUTLINE */
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| 348 | if (strlen(uname) != 0) {
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| 349 | pututline_my(uname, u, claim);
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| 350 | }
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| 351 | #endif /* HAVE_PUTUTLINE */
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| 352 |
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| 353 | wname = uw_pathname(talloc_tos(), "wtmp", wt_pathname);
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| 354 | if (!wname) {
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| 355 | return;
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| 356 | }
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| 357 | DEBUG(2,("utmp_nox_update: wname:%s\n", wname));
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| 358 | if (strlen(wname) != 0) {
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| 359 | #ifdef HAVE_UPDWTMP
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| 360 | updwtmp(wname, u);
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| 361 | /*
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| 362 | * updwtmp() and the newer updwtmpx() may be unsymmetrical.
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| 363 | * At least one OS, Solaris 2.x declares the former in the
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| 364 | * "utmpx" (latter) file and context.
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| 365 | * In the Solaris case this is irrelevant: it has both and
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| 366 | * we always prefer the "x" case, so doesn't come here.
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| 367 | * But are there other systems, with no "x", which lack
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| 368 | * updwtmp() perhaps?
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| 369 | */
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| 370 | #else
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| 371 | updwtmp_my(wname, u, claim);
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| 372 | #endif /* HAVE_UPDWTMP */
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| 373 | }
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| 374 | }
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| 375 |
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| 376 | /****************************************************************************
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| 377 | Copy a string in the utmp structure.
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| 378 | ****************************************************************************/
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| 379 |
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| 380 | static void utmp_strcpy(char *dest, const char *src, size_t n)
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| 381 | {
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| 382 | size_t len = 0;
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| 383 |
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| 384 | memset(dest, '\0', n);
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| 385 | if (src)
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| 386 | len = strlen(src);
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| 387 | if (len >= n) {
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| 388 | memcpy(dest, src, n);
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| 389 | } else {
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| 390 | if (len)
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| 391 | memcpy(dest, src, len);
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| 392 | }
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| 393 | }
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| 394 |
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| 395 | /****************************************************************************
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| 396 | Update via utmpx/wtmpx (preferred) or via utmp/wtmp.
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| 397 | ****************************************************************************/
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| 398 |
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| 399 | static void sys_utmp_update(struct utmp *u, const char *hostname, bool claim)
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| 400 | {
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| 401 | #if !defined(HAVE_UTMPX_H)
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| 402 | /* No utmpx stuff. Drop to non-x stuff */
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| 403 | utmp_nox_update(u, claim);
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| 404 | #elif !defined(HAVE_PUTUTXLINE)
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| 405 | /* Odd. Have utmpx.h but no "pututxline()". Drop to non-x stuff */
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| 406 | DEBUG(1,("utmp_update: have utmpx.h but no pututxline() function\n"));
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| 407 | utmp_nox_update(u, claim);
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| 408 | #elif !defined(HAVE_GETUTMPX)
|
|---|
| 409 | /* Odd. Have utmpx.h but no "getutmpx()". Drop to non-x stuff */
|
|---|
| 410 | DEBUG(1,("utmp_update: have utmpx.h but no getutmpx() function\n"));
|
|---|
| 411 | utmp_nox_update(u, claim);
|
|---|
| 412 | #elif !defined(HAVE_UPDWTMPX)
|
|---|
| 413 | /* Have utmpx.h but no "updwtmpx()". Drop to non-x stuff */
|
|---|
| 414 | DEBUG(1,("utmp_update: have utmpx.h but no updwtmpx() function\n"));
|
|---|
| 415 | utmp_nox_update(u, claim);
|
|---|
| 416 | #else
|
|---|
| 417 | char *uname = NULL;
|
|---|
| 418 | char *wname = NULL;
|
|---|
| 419 | struct utmpx ux, *uxrc;
|
|---|
| 420 |
|
|---|
| 421 | getutmpx(u, &ux);
|
|---|
| 422 |
|
|---|
| 423 | #if defined(HAVE_UX_UT_SYSLEN)
|
|---|
| 424 | if (hostname)
|
|---|
| 425 | ux.ut_syslen = strlen(hostname) + 1; /* include end NULL */
|
|---|
| 426 | else
|
|---|
| 427 | ux.ut_syslen = 0;
|
|---|
| 428 | #endif
|
|---|
| 429 | #if defined(HAVE_UT_UT_HOST)
|
|---|
| 430 | utmp_strcpy(ux.ut_host, hostname, sizeof(ux.ut_host));
|
|---|
| 431 | #endif
|
|---|
| 432 |
|
|---|
| 433 | uname = uw_pathname(talloc_tos(), "utmpx", ux_pathname);
|
|---|
| 434 | wname = uw_pathname(talloc_tos(), "wtmpx", wx_pathname);
|
|---|
| 435 | if (uname && wname) {
|
|---|
| 436 | DEBUG(2,("utmp_update: uname:%s wname:%s\n", uname, wname));
|
|---|
| 437 | }
|
|---|
| 438 |
|
|---|
| 439 | /*
|
|---|
| 440 | * Check for either uname or wname being empty.
|
|---|
| 441 | * Some systems, such as Redhat 6, have a "utmpx.h" which doesn't
|
|---|
| 442 | * define default filenames.
|
|---|
| 443 | * Also, our local installation has not provided an override.
|
|---|
| 444 | * Drop to non-x method. (E.g. RH6 has good defaults in "utmp.h".)
|
|---|
| 445 | */
|
|---|
| 446 | if (!uname || !wname || (strlen(uname) == 0) || (strlen(wname) == 0)) {
|
|---|
| 447 | utmp_nox_update(u, claim);
|
|---|
| 448 | } else {
|
|---|
| 449 | utmpxname(uname);
|
|---|
| 450 | setutxent();
|
|---|
| 451 | uxrc = pututxline(&ux);
|
|---|
| 452 | endutxent();
|
|---|
| 453 | if (uxrc == NULL) {
|
|---|
| 454 | DEBUG(2,("utmp_update: pututxline() failed\n"));
|
|---|
| 455 | return;
|
|---|
| 456 | }
|
|---|
| 457 | updwtmpx(wname, &ux);
|
|---|
| 458 | }
|
|---|
| 459 | #endif /* HAVE_UTMPX_H */
|
|---|
| 460 | }
|
|---|
| 461 |
|
|---|
| 462 | #if defined(HAVE_UT_UT_ID)
|
|---|
| 463 | /****************************************************************************
|
|---|
| 464 | Encode the unique connection number into "ut_id".
|
|---|
| 465 | ****************************************************************************/
|
|---|
| 466 |
|
|---|
| 467 | static int ut_id_encode(int i, char *fourbyte)
|
|---|
| 468 | {
|
|---|
| 469 | int nbase;
|
|---|
| 470 | const char *ut_id_encstr = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
|
|---|
| 471 |
|
|---|
| 472 | fourbyte[0] = 'S';
|
|---|
| 473 | fourbyte[1] = 'M';
|
|---|
| 474 |
|
|---|
| 475 | /*
|
|---|
| 476 | * Encode remaining 2 bytes from 'i'.
|
|---|
| 477 | * 'ut_id_encstr' is the character set on which modulo arithmetic is done.
|
|---|
| 478 | * Example: digits would produce the base-10 numbers from '001'.
|
|---|
| 479 | */
|
|---|
| 480 | nbase = strlen(ut_id_encstr);
|
|---|
| 481 |
|
|---|
| 482 | fourbyte[3] = ut_id_encstr[i % nbase];
|
|---|
| 483 | i /= nbase;
|
|---|
| 484 | fourbyte[2] = ut_id_encstr[i % nbase];
|
|---|
| 485 | i /= nbase;
|
|---|
| 486 |
|
|---|
| 487 | return(i); /* 0: good; else overflow */
|
|---|
| 488 | }
|
|---|
| 489 | #endif /* defined(HAVE_UT_UT_ID) */
|
|---|
| 490 |
|
|---|
| 491 |
|
|---|
| 492 | /*
|
|---|
| 493 | fill a system utmp structure given all the info we can gather
|
|---|
| 494 | */
|
|---|
| 495 | static bool sys_utmp_fill(struct utmp *u,
|
|---|
| 496 | const char *username, const char *hostname,
|
|---|
| 497 | const char *ip_addr_str,
|
|---|
| 498 | const char *id_str, int id_num)
|
|---|
| 499 | {
|
|---|
| 500 | struct timeval timeval;
|
|---|
| 501 |
|
|---|
| 502 | /*
|
|---|
| 503 | * ut_name, ut_user:
|
|---|
| 504 | * Several (all?) systems seems to define one as the other.
|
|---|
| 505 | * It is easier and clearer simply to let the following take its course,
|
|---|
| 506 | * rather than to try to detect and optimise.
|
|---|
| 507 | */
|
|---|
| 508 | #if defined(HAVE_UT_UT_USER)
|
|---|
| 509 | utmp_strcpy(u->ut_user, username, sizeof(u->ut_user));
|
|---|
| 510 | #elif defined(HAVE_UT_UT_NAME)
|
|---|
| 511 | utmp_strcpy(u->ut_name, username, sizeof(u->ut_name));
|
|---|
| 512 | #endif
|
|---|
| 513 |
|
|---|
| 514 | /*
|
|---|
| 515 | * ut_line:
|
|---|
| 516 | * If size limit proves troublesome, then perhaps use "ut_id_encode()".
|
|---|
| 517 | */
|
|---|
| 518 | if (strlen(id_str) > sizeof(u->ut_line)) {
|
|---|
| 519 | DEBUG(1,("id_str [%s] is too long for %lu char utmp field\n",
|
|---|
| 520 | id_str, (unsigned long)sizeof(u->ut_line)));
|
|---|
| 521 | return False;
|
|---|
| 522 | }
|
|---|
| 523 | utmp_strcpy(u->ut_line, id_str, sizeof(u->ut_line));
|
|---|
| 524 |
|
|---|
| 525 | #if defined(HAVE_UT_UT_PID)
|
|---|
| 526 | u->ut_pid = sys_getpid();
|
|---|
| 527 | #endif
|
|---|
| 528 |
|
|---|
| 529 | /*
|
|---|
| 530 | * ut_time, ut_tv:
|
|---|
| 531 | * Some have one, some the other. Many have both, but defined (aliased).
|
|---|
| 532 | * It is easier and clearer simply to let the following take its course.
|
|---|
| 533 | * But note that we do the more precise ut_tv as the final assignment.
|
|---|
| 534 | */
|
|---|
| 535 | #if defined(HAVE_UT_UT_TIME)
|
|---|
| 536 | GetTimeOfDay(&timeval);
|
|---|
| 537 | u->ut_time = timeval.tv_sec;
|
|---|
| 538 | #elif defined(HAVE_UT_UT_TV)
|
|---|
| 539 | GetTimeOfDay(&timeval);
|
|---|
| 540 | u->ut_tv = timeval;
|
|---|
| 541 | #else
|
|---|
| 542 | #error "with-utmp must have UT_TIME or UT_TV"
|
|---|
| 543 | #endif
|
|---|
| 544 |
|
|---|
| 545 | #if defined(HAVE_UT_UT_HOST)
|
|---|
| 546 | utmp_strcpy(u->ut_host, hostname, sizeof(u->ut_host));
|
|---|
| 547 | #endif
|
|---|
| 548 | #if defined(HAVE_IPV6) && defined(HAVE_UT_UT_ADDR_V6)
|
|---|
| 549 | memset(&u->ut_addr_v6, '\0', sizeof(u->ut_addr_v6));
|
|---|
| 550 | if (ip_addr_str) {
|
|---|
| 551 | struct in6_addr addr;
|
|---|
| 552 | if (inet_pton(AF_INET6, ip_addr_str, &addr) > 0) {
|
|---|
| 553 | memcpy(&u->ut_addr_v6, &addr, sizeof(addr));
|
|---|
| 554 | }
|
|---|
| 555 | }
|
|---|
| 556 | #elif defined(HAVE_UT_UT_ADDR)
|
|---|
| 557 | memset(&u->ut_addr, '\0', sizeof(u->ut_addr));
|
|---|
| 558 | if (ip_addr_str) {
|
|---|
| 559 | struct in_addr addr;
|
|---|
| 560 | if (inet_pton(AF_INET, ip_addr_str, &addr) > 0) {
|
|---|
| 561 | memcpy(&u->ut_addr, &addr, sizeof(addr));
|
|---|
| 562 | }
|
|---|
| 563 | }
|
|---|
| 564 | /*
|
|---|
| 565 | * "(unsigned long) ut_addr" apparently exists on at least HP-UX 10.20.
|
|---|
| 566 | * Volunteer to implement, please ...
|
|---|
| 567 | */
|
|---|
| 568 | #endif
|
|---|
| 569 |
|
|---|
| 570 | #if defined(HAVE_UT_UT_ID)
|
|---|
| 571 | if (ut_id_encode(id_num, u->ut_id) != 0) {
|
|---|
| 572 | DEBUG(1,("utmp_fill: cannot encode id %d\n", id_num));
|
|---|
| 573 | return False;
|
|---|
| 574 | }
|
|---|
| 575 | #endif
|
|---|
| 576 |
|
|---|
| 577 | return True;
|
|---|
| 578 | }
|
|---|
| 579 |
|
|---|
| 580 | /****************************************************************************
|
|---|
| 581 | Close a connection.
|
|---|
| 582 | ****************************************************************************/
|
|---|
| 583 |
|
|---|
| 584 | void sys_utmp_yield(const char *username, const char *hostname,
|
|---|
| 585 | const char *ip_addr_str,
|
|---|
| 586 | const char *id_str, int id_num)
|
|---|
| 587 | {
|
|---|
| 588 | struct utmp u;
|
|---|
| 589 |
|
|---|
| 590 | ZERO_STRUCT(u);
|
|---|
| 591 |
|
|---|
| 592 | #if defined(HAVE_UT_UT_EXIT)
|
|---|
| 593 | u.ut_exit.e_termination = 0;
|
|---|
| 594 | u.ut_exit.e_exit = 0;
|
|---|
| 595 | #endif
|
|---|
| 596 |
|
|---|
| 597 | #if defined(HAVE_UT_UT_TYPE)
|
|---|
| 598 | u.ut_type = DEAD_PROCESS;
|
|---|
| 599 | #endif
|
|---|
| 600 |
|
|---|
| 601 | if (!sys_utmp_fill(&u, username, hostname, ip_addr_str, id_str, id_num))
|
|---|
| 602 | return;
|
|---|
| 603 |
|
|---|
| 604 | sys_utmp_update(&u, NULL, False);
|
|---|
| 605 | }
|
|---|
| 606 |
|
|---|
| 607 | /****************************************************************************
|
|---|
| 608 | Claim a entry in whatever utmp system the OS uses.
|
|---|
| 609 | ****************************************************************************/
|
|---|
| 610 |
|
|---|
| 611 | void sys_utmp_claim(const char *username, const char *hostname,
|
|---|
| 612 | const char *ip_addr_str,
|
|---|
| 613 | const char *id_str, int id_num)
|
|---|
| 614 | {
|
|---|
| 615 | struct utmp u;
|
|---|
| 616 |
|
|---|
| 617 | ZERO_STRUCT(u);
|
|---|
| 618 |
|
|---|
| 619 | #if defined(HAVE_UT_UT_TYPE)
|
|---|
| 620 | u.ut_type = USER_PROCESS;
|
|---|
| 621 | #endif
|
|---|
| 622 |
|
|---|
| 623 | if (!sys_utmp_fill(&u, username, hostname, ip_addr_str, id_str, id_num))
|
|---|
| 624 | return;
|
|---|
| 625 |
|
|---|
| 626 | sys_utmp_update(&u, hostname, True);
|
|---|
| 627 | }
|
|---|
| 628 |
|
|---|
| 629 | #endif /* WITH_UTMP */
|
|---|
