andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2000 Andre Lucas. All rights reserved. |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 3 | * Portions copyright (c) 1998 Todd C. Miller |
| 4 | * Portions copyright (c) 1996 Jason Downs |
| 5 | * Portions copyright (c) 1996 Theo de Raadt |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 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. |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 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 | |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 28 | /** |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 29 | ** loginrec.c: platform-independent login recording and lastlog retrieval |
| 30 | **/ |
| 31 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 32 | /* |
| 33 | The new login code explained |
| 34 | ============================ |
| 35 | |
| 36 | This code attempts to provide a common interface to login recording |
| 37 | (utmp and friends) and last login time retrieval. |
| 38 | |
| 39 | Its primary means of achieving this is to use 'struct logininfo', a |
| 40 | union of all the useful fields in the various different types of |
| 41 | system login record structures one finds on UNIX variants. |
| 42 | |
| 43 | We depend on autoconf to define which recording methods are to be |
| 44 | used, and which fields are contained in the relevant data structures |
| 45 | on the local system. Many C preprocessor symbols affect which code |
| 46 | gets compiled here. |
| 47 | |
| 48 | The code is designed to make it easy to modify a particular |
| 49 | recording method, without affecting other methods nor requiring so |
| 50 | many nested conditional compilation blocks as were commonplace in |
| 51 | the old code. |
| 52 | |
| 53 | For login recording, we try to use the local system's libraries as |
| 54 | these are clearly most likely to work correctly. For utmp systems |
| 55 | this usually means login() and logout() or setutent() etc., probably |
| 56 | in libutil, along with logwtmp() etc. On these systems, we fall back |
| 57 | to writing the files directly if we have to, though this method |
| 58 | requires very thorough testing so we do not corrupt local auditing |
| 59 | information. These files and their access methods are very system |
| 60 | specific indeed. |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 61 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 62 | For utmpx systems, the corresponding library functions are |
| 63 | setutxent() etc. To the author's knowledge, all utmpx systems have |
| 64 | these library functions and so no direct write is attempted. If such |
| 65 | a system exists and needs support, direct analogues of the [uw]tmp |
| 66 | code should suffice. |
| 67 | |
| 68 | Retrieving the time of last login ('lastlog') is in some ways even |
| 69 | more problemmatic than login recording. Some systems provide a |
| 70 | simple table of all users which we seek based on uid and retrieve a |
| 71 | relatively standard structure. Others record the same information in |
| 72 | a directory with a separate file, and others don't record the |
| 73 | information separately at all. For systems in the latter category, |
| 74 | we look backwards in the wtmp or wtmpx file for the last login entry |
| 75 | for our user. Naturally this is slower and on busy systems could |
| 76 | incur a significant performance penalty. |
| 77 | |
| 78 | Calling the new code |
| 79 | -------------------- |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 80 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 81 | In OpenSSH all login recording and retrieval is performed in |
| 82 | login.c. Here you'll find working examples. Also, in the logintest.c |
| 83 | program there are more examples. |
| 84 | |
| 85 | Internal handler calling method |
| 86 | ------------------------------- |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 87 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 88 | When a call is made to login_login() or login_logout(), both |
| 89 | routines set a struct logininfo flag defining which action (log in, |
| 90 | or log out) is to be taken. They both then call login_write(), which |
| 91 | calls whichever of the many structure-specific handlers autoconf |
| 92 | selects for the local system. |
| 93 | |
| 94 | The handlers themselves handle system data structure specifics. Both |
| 95 | struct utmp and struct utmpx have utility functions (see |
| 96 | construct_utmp*()) to try to make it simpler to add extra systems |
| 97 | that introduce new features to either structure. |
| 98 | |
| 99 | While it may seem terribly wasteful to replicate so much similar |
| 100 | code for each method, experience has shown that maintaining code to |
| 101 | write both struct utmp and utmpx in one function, whilst maintaining |
| 102 | support for all systems whether they have library support or not, is |
| 103 | a difficult and time-consuming task. |
| 104 | |
| 105 | Lastlog support proceeds similarly. Functions login_get_lastlog() |
| 106 | (and its OpenSSH-tuned friend login_get_lastlog_time()) call |
| 107 | getlast_entry(), which tries one of three methods to find the last |
| 108 | login time. It uses local system lastlog support if it can, |
| 109 | otherwise it tries wtmp or wtmpx before giving up and returning 0, |
| 110 | meaning "tilt". |
| 111 | |
| 112 | Maintenance |
| 113 | ----------- |
| 114 | |
| 115 | In many cases it's possible to tweak autoconf to select the correct |
| 116 | methods for a particular platform, either by improving the detection |
| 117 | code (best), or by presetting DISABLE_<method> or CONF_<method>_FILE |
| 118 | symbols for the platform. |
| 119 | |
| 120 | Use logintest to check which symbols are defined before modifying |
Tim Rice | b89e694 | 2001-10-29 18:50:39 -0800 | [diff] [blame] | 121 | configure.ac and loginrec.c. (You have to build logintest yourself |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 122 | with 'make logintest' as it's not built by default.) |
| 123 | |
| 124 | Otherwise, patches to the specific method(s) are very helpful! |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 125 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 126 | */ |
| 127 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 128 | /** |
| 129 | ** TODO: |
Damien Miller | e5192fa | 2000-08-29 14:30:37 +1100 | [diff] [blame] | 130 | ** homegrown ttyslot() |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 131 | ** test, test, test |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 132 | ** |
| 133 | ** Platform status: |
| 134 | ** ---------------- |
| 135 | ** |
| 136 | ** Known good: |
Damien Miller | e5192fa | 2000-08-29 14:30:37 +1100 | [diff] [blame] | 137 | ** Linux (Redhat 6.2, Debian) |
| 138 | ** Solaris |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 139 | ** HP-UX 10.20 (gcc only) |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 140 | ** IRIX |
Ben Lindstrom | dcca981 | 2000-11-10 03:28:31 +0000 | [diff] [blame] | 141 | ** NeXT - M68k/HPPA/Sparc (4.2/3.3) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 142 | ** |
| 143 | ** Testing required: Please send reports! |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 144 | ** NetBSD |
| 145 | ** HP-UX 11 |
andre | 60f3c98 | 2000-06-03 16:18:19 +0000 | [diff] [blame] | 146 | ** AIX |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 147 | ** |
| 148 | ** Platforms with known problems: |
Damien Miller | e5192fa | 2000-08-29 14:30:37 +1100 | [diff] [blame] | 149 | ** Some variants of Slackware Linux |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 150 | ** |
| 151 | **/ |
| 152 | |
| 153 | #include "includes.h" |
| 154 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 155 | #include "ssh.h" |
| 156 | #include "xmalloc.h" |
| 157 | #include "loginrec.h" |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame] | 158 | #include "log.h" |
| 159 | #include "atomicio.h" |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 160 | |
Darren Tucker | 8661b56 | 2003-07-06 15:20:46 +1000 | [diff] [blame^] | 161 | RCSID("$Id: loginrec.c,v 1.52 2003/07/06 05:20:46 dtucker Exp $"); |
Ben Lindstrom | dcca981 | 2000-11-10 03:28:31 +0000 | [diff] [blame] | 162 | |
| 163 | #ifdef HAVE_UTIL_H |
| 164 | # include <util.h> |
| 165 | #endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 166 | |
Ben Lindstrom | e2fb8d3 | 2000-12-28 00:07:07 +0000 | [diff] [blame] | 167 | #ifdef HAVE_LIBUTIL_H |
| 168 | # include <libutil.h> |
| 169 | #endif |
| 170 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 171 | /** |
| 172 | ** prototypes for helper functions in this file |
| 173 | **/ |
| 174 | |
| 175 | #if HAVE_UTMP_H |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 176 | void set_utmp_time(struct logininfo *li, struct utmp *ut); |
| 177 | void construct_utmp(struct logininfo *li, struct utmp *ut); |
| 178 | #endif |
| 179 | |
| 180 | #ifdef HAVE_UTMPX_H |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 181 | void set_utmpx_time(struct logininfo *li, struct utmpx *ut); |
| 182 | void construct_utmpx(struct logininfo *li, struct utmpx *ut); |
| 183 | #endif |
| 184 | |
| 185 | int utmp_write_entry(struct logininfo *li); |
| 186 | int utmpx_write_entry(struct logininfo *li); |
| 187 | int wtmp_write_entry(struct logininfo *li); |
| 188 | int wtmpx_write_entry(struct logininfo *li); |
| 189 | int lastlog_write_entry(struct logininfo *li); |
| 190 | int syslogin_write_entry(struct logininfo *li); |
| 191 | |
| 192 | int getlast_entry(struct logininfo *li); |
| 193 | int lastlog_get_entry(struct logininfo *li); |
| 194 | int wtmp_get_entry(struct logininfo *li); |
| 195 | int wtmpx_get_entry(struct logininfo *li); |
| 196 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 197 | /* pick the shortest string */ |
| 198 | #define MIN_SIZEOF(s1,s2) ( sizeof(s1) < sizeof(s2) ? sizeof(s1) : sizeof(s2) ) |
| 199 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 200 | /** |
| 201 | ** platform-independent login functions |
| 202 | **/ |
| 203 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 204 | /* login_login(struct logininfo *) -Record a login |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 205 | * |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 206 | * Call with a pointer to a struct logininfo initialised with |
| 207 | * login_init_entry() or login_alloc_entry() |
| 208 | * |
| 209 | * Returns: |
| 210 | * >0 if successful |
| 211 | * 0 on failure (will use OpenSSH's logging facilities for diagnostics) |
| 212 | */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 213 | int |
| 214 | login_login (struct logininfo *li) |
| 215 | { |
| 216 | li->type = LTYPE_LOGIN; |
| 217 | return login_write(li); |
| 218 | } |
| 219 | |
| 220 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 221 | /* login_logout(struct logininfo *) - Record a logout |
| 222 | * |
| 223 | * Call as with login_login() |
| 224 | * |
| 225 | * Returns: |
| 226 | * >0 if successful |
| 227 | * 0 on failure (will use OpenSSH's logging facilities for diagnostics) |
| 228 | */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 229 | int |
| 230 | login_logout(struct logininfo *li) |
| 231 | { |
| 232 | li->type = LTYPE_LOGOUT; |
| 233 | return login_write(li); |
| 234 | } |
| 235 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 236 | /* login_get_lastlog_time(int) - Retrieve the last login time |
| 237 | * |
| 238 | * Retrieve the last login time for the given uid. Will try to use the |
| 239 | * system lastlog facilities if they are available, but will fall back |
| 240 | * to looking in wtmp/wtmpx if necessary |
| 241 | * |
| 242 | * Returns: |
| 243 | * 0 on failure, or if user has never logged in |
| 244 | * Time in seconds from the epoch if successful |
| 245 | * |
| 246 | * Useful preprocessor symbols: |
| 247 | * DISABLE_LASTLOG: If set, *never* even try to retrieve lastlog |
| 248 | * info |
| 249 | * USE_LASTLOG: If set, indicates the presence of system lastlog |
| 250 | * facilities. If this and DISABLE_LASTLOG are not set, |
| 251 | * try to retrieve lastlog information from wtmp/wtmpx. |
| 252 | */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 253 | unsigned int |
| 254 | login_get_lastlog_time(const int uid) |
| 255 | { |
| 256 | struct logininfo li; |
| 257 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 258 | if (login_get_lastlog(&li, uid)) |
| 259 | return li.tv_sec; |
| 260 | else |
| 261 | return 0; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 262 | } |
| 263 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 264 | /* login_get_lastlog(struct logininfo *, int) - Retrieve a lastlog entry |
| 265 | * |
| 266 | * Retrieve a logininfo structure populated (only partially) with |
| 267 | * information from the system lastlog data, or from wtmp/wtmpx if no |
| 268 | * system lastlog information exists. |
| 269 | * |
| 270 | * Note this routine must be given a pre-allocated logininfo. |
| 271 | * |
| 272 | * Returns: |
| 273 | * >0: A pointer to your struct logininfo if successful |
| 274 | * 0 on failure (will use OpenSSH's logging facilities for diagnostics) |
| 275 | * |
| 276 | */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 277 | struct logininfo * |
| 278 | login_get_lastlog(struct logininfo *li, const int uid) |
| 279 | { |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 280 | struct passwd *pw; |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 281 | |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 282 | memset(li, '\0', sizeof(*li)); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 283 | li->uid = uid; |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 284 | |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 285 | /* |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 286 | * If we don't have a 'real' lastlog, we need the username to |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 287 | * reliably search wtmp(x) for the last login (see |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 288 | * wtmp_get_entry().) |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 289 | */ |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 290 | pw = getpwuid(uid); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 291 | if (pw == NULL) |
| 292 | fatal("login_get_lastlog: Cannot find account for uid %i", uid); |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 293 | |
andre | 98cabe0 | 2000-06-19 09:11:30 +0000 | [diff] [blame] | 294 | /* No MIN_SIZEOF here - we absolutely *must not* truncate the |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 295 | * username */ |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 296 | strlcpy(li->username, pw->pw_name, sizeof(li->username)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 297 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 298 | if (getlast_entry(li)) |
| 299 | return li; |
| 300 | else |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 301 | return NULL; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 302 | } |
| 303 | |
| 304 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 305 | /* login_alloc_entry(int, char*, char*, char*) - Allocate and initialise |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 306 | * a logininfo structure |
| 307 | * |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 308 | * This function creates a new struct logininfo, a data structure |
| 309 | * meant to carry the information required to portably record login info. |
| 310 | * |
| 311 | * Returns a pointer to a newly created struct logininfo. If memory |
| 312 | * allocation fails, the program halts. |
| 313 | */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 314 | struct |
| 315 | logininfo *login_alloc_entry(int pid, const char *username, |
| 316 | const char *hostname, const char *line) |
| 317 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 318 | struct logininfo *newli; |
| 319 | |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 320 | newli = (struct logininfo *) xmalloc (sizeof(*newli)); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 321 | (void)login_init_entry(newli, pid, username, hostname, line); |
| 322 | return newli; |
| 323 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 324 | |
| 325 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 326 | /* login_free_entry(struct logininfo *) - free struct memory */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 327 | void |
| 328 | login_free_entry(struct logininfo *li) |
| 329 | { |
| 330 | xfree(li); |
| 331 | } |
| 332 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 333 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 334 | /* login_init_entry(struct logininfo *, int, char*, char*, char*) |
| 335 | * - initialise a struct logininfo |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 336 | * |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 337 | * Populates a new struct logininfo, a data structure meant to carry |
| 338 | * the information required to portably record login info. |
| 339 | * |
| 340 | * Returns: 1 |
| 341 | */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 342 | int |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 343 | login_init_entry(struct logininfo *li, int pid, const char *username, |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 344 | const char *hostname, const char *line) |
| 345 | { |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 346 | struct passwd *pw; |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 347 | |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 348 | memset(li, 0, sizeof(*li)); |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 349 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 350 | li->pid = pid; |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 351 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 352 | /* set the line information */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 353 | if (line) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 354 | line_fullname(li->line, line, sizeof(li->line)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 355 | |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 356 | if (username) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 357 | strlcpy(li->username, username, sizeof(li->username)); |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 358 | pw = getpwnam(li->username); |
| 359 | if (pw == NULL) |
| 360 | fatal("login_init_entry: Cannot find user \"%s\"", li->username); |
| 361 | li->uid = pw->pw_uid; |
| 362 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 363 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 364 | if (hostname) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 365 | strlcpy(li->hostname, hostname, sizeof(li->hostname)); |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 366 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 367 | return 1; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 368 | } |
| 369 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 370 | /* login_set_current_time(struct logininfo *) - set the current time |
| 371 | * |
| 372 | * Set the current time in a logininfo structure. This function is |
| 373 | * meant to eliminate the need to deal with system dependencies for |
| 374 | * time handling. |
| 375 | */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 376 | void |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 377 | login_set_current_time(struct logininfo *li) |
| 378 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 379 | struct timeval tv; |
| 380 | |
| 381 | gettimeofday(&tv, NULL); |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 382 | |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 383 | li->tv_sec = tv.tv_sec; |
| 384 | li->tv_usec = tv.tv_usec; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 385 | } |
| 386 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 387 | /* copy a sockaddr_* into our logininfo */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 388 | void |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 389 | login_set_addr(struct logininfo *li, const struct sockaddr *sa, |
| 390 | const unsigned int sa_size) |
| 391 | { |
| 392 | unsigned int bufsize = sa_size; |
| 393 | |
| 394 | /* make sure we don't overrun our union */ |
| 395 | if (sizeof(li->hostaddr) < sa_size) |
| 396 | bufsize = sizeof(li->hostaddr); |
| 397 | |
| 398 | memcpy((void *)&(li->hostaddr.sa), (const void *)sa, bufsize); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 399 | } |
| 400 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 401 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 402 | /** |
| 403 | ** login_write: Call low-level recording functions based on autoconf |
| 404 | ** results |
| 405 | **/ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 406 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 407 | login_write (struct logininfo *li) |
| 408 | { |
Damien Miller | bac2d8a | 2000-09-05 16:13:06 +1100 | [diff] [blame] | 409 | #ifndef HAVE_CYGWIN |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 410 | if ((int)geteuid() != 0) { |
Damien Miller | 996acd2 | 2003-04-09 20:59:48 +1000 | [diff] [blame] | 411 | logit("Attempt to write login records by non-root user (aborting)"); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 412 | return 1; |
| 413 | } |
Damien Miller | bac2d8a | 2000-09-05 16:13:06 +1100 | [diff] [blame] | 414 | #endif |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 415 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 416 | /* set the timestamp */ |
| 417 | login_set_current_time(li); |
| 418 | #ifdef USE_LOGIN |
| 419 | syslogin_write_entry(li); |
| 420 | #endif |
| 421 | #ifdef USE_LASTLOG |
| 422 | if (li->type == LTYPE_LOGIN) { |
| 423 | lastlog_write_entry(li); |
| 424 | } |
| 425 | #endif |
| 426 | #ifdef USE_UTMP |
| 427 | utmp_write_entry(li); |
| 428 | #endif |
| 429 | #ifdef USE_WTMP |
| 430 | wtmp_write_entry(li); |
| 431 | #endif |
| 432 | #ifdef USE_UTMPX |
| 433 | utmpx_write_entry(li); |
| 434 | #endif |
| 435 | #ifdef USE_WTMPX |
| 436 | wtmpx_write_entry(li); |
| 437 | #endif |
| 438 | return 0; |
| 439 | } |
| 440 | |
Ben Lindstrom | 97c677d | 2001-05-08 20:33:05 +0000 | [diff] [blame] | 441 | #ifdef LOGIN_NEEDS_UTMPX |
| 442 | int |
| 443 | login_utmp_only(struct logininfo *li) |
| 444 | { |
| 445 | li->type = LTYPE_LOGIN; |
Ben Lindstrom | 9197c59 | 2001-10-26 15:56:55 +0000 | [diff] [blame] | 446 | login_set_current_time(li); |
Ben Lindstrom | 97c677d | 2001-05-08 20:33:05 +0000 | [diff] [blame] | 447 | # ifdef USE_UTMP |
| 448 | utmp_write_entry(li); |
| 449 | # endif |
| 450 | # ifdef USE_WTMP |
| 451 | wtmp_write_entry(li); |
| 452 | # endif |
| 453 | # ifdef USE_UTMPX |
| 454 | utmpx_write_entry(li); |
| 455 | # endif |
| 456 | # ifdef USE_WTMPX |
| 457 | wtmpx_write_entry(li); |
| 458 | # endif |
| 459 | return 0; |
| 460 | } |
| 461 | #endif |
| 462 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 463 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 464 | ** getlast_entry: Call low-level functions to retrieve the last login |
| 465 | ** time. |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 466 | **/ |
| 467 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 468 | /* take the uid in li and return the last login time */ |
| 469 | int |
| 470 | getlast_entry(struct logininfo *li) |
| 471 | { |
| 472 | #ifdef USE_LASTLOG |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 473 | return(lastlog_get_entry(li)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 474 | #else /* !USE_LASTLOG */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 475 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 476 | #ifdef DISABLE_LASTLOG |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 477 | /* On some systems we shouldn't even try to obtain last login |
andre | ecaabf1 | 2000-06-12 22:21:44 +0000 | [diff] [blame] | 478 | * time, e.g. AIX */ |
| 479 | return 0; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 480 | # else /* DISABLE_LASTLOG */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 481 | /* Try to retrieve the last login time from wtmp */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 482 | # if defined(USE_WTMP) && (defined(HAVE_TIME_IN_UTMP) || defined(HAVE_TV_IN_UTMP)) |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 483 | /* retrieve last login time from utmp */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 484 | return (wtmp_get_entry(li)); |
| 485 | # else /* defined(USE_WTMP) && (defined(HAVE_TIME_IN_UTMP) || defined(HAVE_TV_IN_UTMP)) */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 486 | /* If wtmp isn't available, try wtmpx */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 487 | # if defined(USE_WTMPX) && (defined(HAVE_TIME_IN_UTMPX) || defined(HAVE_TV_IN_UTMPX)) |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 488 | /* retrieve last login time from utmpx */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 489 | return (wtmpx_get_entry(li)); |
| 490 | # else |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 491 | /* Give up: No means of retrieving last login time */ |
| 492 | return 0; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 493 | # endif /* USE_WTMPX && (HAVE_TIME_IN_UTMPX || HAVE_TV_IN_UTMPX) */ |
| 494 | # endif /* USE_WTMP && (HAVE_TIME_IN_UTMP || HAVE_TV_IN_UTMP) */ |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 495 | # endif /* DISABLE_LASTLOG */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 496 | #endif /* USE_LASTLOG */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 497 | } |
| 498 | |
| 499 | |
| 500 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 501 | /* |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 502 | * 'line' string utility functions |
| 503 | * |
| 504 | * These functions process the 'line' string into one of three forms: |
| 505 | * |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 506 | * 1. The full filename (including '/dev') |
| 507 | * 2. The stripped name (excluding '/dev') |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 508 | * 3. The abbreviated name (e.g. /dev/ttyp00 -> yp00 |
| 509 | * /dev/pts/1 -> ts/1 ) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 510 | * |
| 511 | * Form 3 is used on some systems to identify a .tmp.? entry when |
| 512 | * attempting to remove it. Typically both addition and removal is |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 513 | * performed by one application - say, sshd - so as long as the choice |
| 514 | * uniquely identifies a terminal it's ok. |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 515 | */ |
| 516 | |
| 517 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 518 | /* line_fullname(): add the leading '/dev/' if it doesn't exist make |
| 519 | * sure dst has enough space, if not just copy src (ugh) */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 520 | char * |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 521 | line_fullname(char *dst, const char *src, int dstsize) |
| 522 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 523 | memset(dst, '\0', dstsize); |
Damien Miller | f5a8147 | 2000-09-30 21:34:44 +1100 | [diff] [blame] | 524 | if ((strncmp(src, "/dev/", 5) == 0) || (dstsize < (strlen(src) + 5))) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 525 | strlcpy(dst, src, dstsize); |
Damien Miller | f5a8147 | 2000-09-30 21:34:44 +1100 | [diff] [blame] | 526 | } else { |
Damien Miller | 1a13225 | 2000-06-13 21:23:17 +1000 | [diff] [blame] | 527 | strlcpy(dst, "/dev/", dstsize); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 528 | strlcat(dst, src, dstsize); |
| 529 | } |
| 530 | return dst; |
| 531 | } |
| 532 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 533 | /* line_stripname(): strip the leading '/dev' if it exists, return dst */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 534 | char * |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 535 | line_stripname(char *dst, const char *src, int dstsize) |
| 536 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 537 | memset(dst, '\0', dstsize); |
| 538 | if (strncmp(src, "/dev/", 5) == 0) |
Damien Miller | f5a8147 | 2000-09-30 21:34:44 +1100 | [diff] [blame] | 539 | strlcpy(dst, src + 5, dstsize); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 540 | else |
| 541 | strlcpy(dst, src, dstsize); |
| 542 | return dst; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 543 | } |
| 544 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 545 | /* line_abbrevname(): Return the abbreviated (usually four-character) |
| 546 | * form of the line (Just use the last <dstsize> characters of the |
| 547 | * full name.) |
| 548 | * |
| 549 | * NOTE: use strncpy because we do NOT necessarily want zero |
| 550 | * termination */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 551 | char * |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 552 | line_abbrevname(char *dst, const char *src, int dstsize) |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 553 | { |
| 554 | size_t len; |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 555 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 556 | memset(dst, '\0', dstsize); |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 557 | |
Damien Miller | 8e81ed3 | 2000-07-01 13:17:42 +1000 | [diff] [blame] | 558 | /* Always skip prefix if present */ |
| 559 | if (strncmp(src, "/dev/", 5) == 0) |
| 560 | src += 5; |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 561 | |
Damien Miller | f1b9d11 | 2002-04-23 23:09:19 +1000 | [diff] [blame] | 562 | #ifdef WITH_ABBREV_NO_TTY |
| 563 | if (strncmp(src, "tty", 3) == 0) |
| 564 | src += 3; |
| 565 | #endif |
| 566 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 567 | len = strlen(src); |
| 568 | |
Damien Miller | 8e81ed3 | 2000-07-01 13:17:42 +1000 | [diff] [blame] | 569 | if (len > 0) { |
| 570 | if (((int)len - dstsize) > 0) |
| 571 | src += ((int)len - dstsize); |
| 572 | |
| 573 | /* note: _don't_ change this to strlcpy */ |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 574 | strncpy(dst, src, (size_t)dstsize); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 575 | } |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 576 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 577 | return dst; |
| 578 | } |
| 579 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 580 | /** |
| 581 | ** utmp utility functions |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 582 | ** |
| 583 | ** These functions manipulate struct utmp, taking system differences |
| 584 | ** into account. |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 585 | **/ |
| 586 | |
| 587 | #if defined(USE_UTMP) || defined (USE_WTMP) || defined (USE_LOGIN) |
| 588 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 589 | /* build the utmp structure */ |
| 590 | void |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 591 | set_utmp_time(struct logininfo *li, struct utmp *ut) |
| 592 | { |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 593 | # ifdef HAVE_TV_IN_UTMP |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 594 | ut->ut_tv.tv_sec = li->tv_sec; |
| 595 | ut->ut_tv.tv_usec = li->tv_usec; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 596 | # else |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 597 | # ifdef HAVE_TIME_IN_UTMP |
| 598 | ut->ut_time = li->tv_sec; |
| 599 | # endif |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 600 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 601 | } |
| 602 | |
| 603 | void |
| 604 | construct_utmp(struct logininfo *li, |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 605 | struct utmp *ut) |
| 606 | { |
Damien Miller | 02e16ad | 2003-01-03 14:42:27 +1100 | [diff] [blame] | 607 | # ifdef HAVE_ADDR_V6_IN_UTMP |
| 608 | struct sockaddr_in6 *sa6; |
| 609 | # endif |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 610 | memset(ut, '\0', sizeof(*ut)); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 611 | |
| 612 | /* First fill out fields used for both logins and logouts */ |
| 613 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 614 | # ifdef HAVE_ID_IN_UTMP |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 615 | line_abbrevname(ut->ut_id, li->line, sizeof(ut->ut_id)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 616 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 617 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 618 | # ifdef HAVE_TYPE_IN_UTMP |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 619 | /* This is done here to keep utmp constants out of struct logininfo */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 620 | switch (li->type) { |
| 621 | case LTYPE_LOGIN: |
| 622 | ut->ut_type = USER_PROCESS; |
Tim Rice | 81ed518 | 2002-09-25 17:38:46 -0700 | [diff] [blame] | 623 | #ifdef _UNICOS |
Ben Lindstrom | 6db66ff | 2001-08-06 23:29:16 +0000 | [diff] [blame] | 624 | cray_set_tmpdir(ut); |
| 625 | #endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 626 | break; |
| 627 | case LTYPE_LOGOUT: |
| 628 | ut->ut_type = DEAD_PROCESS; |
Tim Rice | 81ed518 | 2002-09-25 17:38:46 -0700 | [diff] [blame] | 629 | #ifdef _UNICOS |
Ben Lindstrom | 6db66ff | 2001-08-06 23:29:16 +0000 | [diff] [blame] | 630 | cray_retain_utmp(ut, li->pid); |
| 631 | #endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 632 | break; |
| 633 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 634 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 635 | set_utmp_time(li, ut); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 636 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 637 | line_stripname(ut->ut_line, li->line, sizeof(ut->ut_line)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 638 | |
| 639 | # ifdef HAVE_PID_IN_UTMP |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 640 | ut->ut_pid = li->pid; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 641 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 642 | |
| 643 | /* If we're logging out, leave all other fields blank */ |
| 644 | if (li->type == LTYPE_LOGOUT) |
| 645 | return; |
| 646 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 647 | /* |
| 648 | * These fields are only used when logging in, and are blank |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 649 | * for logouts. |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 650 | */ |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 651 | |
| 652 | /* Use strncpy because we don't necessarily want null termination */ |
Damien Miller | 7a0e5dc | 2000-07-11 12:15:54 +1000 | [diff] [blame] | 653 | strncpy(ut->ut_name, li->username, MIN_SIZEOF(ut->ut_name, li->username)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 654 | # ifdef HAVE_HOST_IN_UTMP |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 655 | strncpy(ut->ut_host, li->hostname, MIN_SIZEOF(ut->ut_host, li->hostname)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 656 | # endif |
| 657 | # ifdef HAVE_ADDR_IN_UTMP |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 658 | /* this is just a 32-bit IP address */ |
| 659 | if (li->hostaddr.sa.sa_family == AF_INET) |
| 660 | ut->ut_addr = li->hostaddr.sa_in.sin_addr.s_addr; |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 661 | # endif |
Damien Miller | 02e16ad | 2003-01-03 14:42:27 +1100 | [diff] [blame] | 662 | # ifdef HAVE_ADDR_V6_IN_UTMP |
| 663 | /* this is just a 128-bit IPv6 address */ |
| 664 | if (li->hostaddr.sa.sa_family == AF_INET6) { |
| 665 | sa6 = ((struct sockaddr_in6 *)&li->hostaddr.sa); |
| 666 | memcpy(ut->ut_addr_v6, sa6->sin6_addr.s6_addr, 16); |
| 667 | if (IN6_IS_ADDR_V4MAPPED(&sa6->sin6_addr)) { |
| 668 | ut->ut_addr_v6[0] = ut->ut_addr_v6[3]; |
| 669 | ut->ut_addr_v6[1] = 0; |
| 670 | ut->ut_addr_v6[2] = 0; |
| 671 | ut->ut_addr_v6[3] = 0; |
| 672 | } |
| 673 | } |
| 674 | # endif |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 675 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 676 | #endif /* USE_UTMP || USE_WTMP || USE_LOGIN */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 677 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 678 | /** |
| 679 | ** utmpx utility functions |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 680 | ** |
| 681 | ** These functions manipulate struct utmpx, accounting for system |
| 682 | ** variations. |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 683 | **/ |
| 684 | |
| 685 | #if defined(USE_UTMPX) || defined (USE_WTMPX) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 686 | /* build the utmpx structure */ |
| 687 | void |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 688 | set_utmpx_time(struct logininfo *li, struct utmpx *utx) |
| 689 | { |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 690 | # ifdef HAVE_TV_IN_UTMPX |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 691 | utx->ut_tv.tv_sec = li->tv_sec; |
| 692 | utx->ut_tv.tv_usec = li->tv_usec; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 693 | # else /* HAVE_TV_IN_UTMPX */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 694 | # ifdef HAVE_TIME_IN_UTMPX |
| 695 | utx->ut_time = li->tv_sec; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 696 | # endif /* HAVE_TIME_IN_UTMPX */ |
| 697 | # endif /* HAVE_TV_IN_UTMPX */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 698 | } |
| 699 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 700 | void |
| 701 | construct_utmpx(struct logininfo *li, struct utmpx *utx) |
| 702 | { |
Damien Miller | 02e16ad | 2003-01-03 14:42:27 +1100 | [diff] [blame] | 703 | # ifdef HAVE_ADDR_V6_IN_UTMP |
| 704 | struct sockaddr_in6 *sa6; |
| 705 | # endif |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 706 | memset(utx, '\0', sizeof(*utx)); |
Damien Miller | 8e81ed3 | 2000-07-01 13:17:42 +1000 | [diff] [blame] | 707 | # ifdef HAVE_ID_IN_UTMPX |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 708 | line_abbrevname(utx->ut_id, li->line, sizeof(utx->ut_id)); |
Damien Miller | 8e81ed3 | 2000-07-01 13:17:42 +1000 | [diff] [blame] | 709 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 710 | |
| 711 | /* this is done here to keep utmp constants out of loginrec.h */ |
| 712 | switch (li->type) { |
| 713 | case LTYPE_LOGIN: |
| 714 | utx->ut_type = USER_PROCESS; |
| 715 | break; |
| 716 | case LTYPE_LOGOUT: |
| 717 | utx->ut_type = DEAD_PROCESS; |
| 718 | break; |
| 719 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 720 | line_stripname(utx->ut_line, li->line, sizeof(utx->ut_line)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 721 | set_utmpx_time(li, utx); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 722 | utx->ut_pid = li->pid; |
Tim Rice | e06ae4a | 2002-02-24 17:56:46 -0800 | [diff] [blame] | 723 | /* strncpy(): Don't necessarily want null termination */ |
| 724 | strncpy(utx->ut_name, li->username, MIN_SIZEOF(utx->ut_name, li->username)); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 725 | |
| 726 | if (li->type == LTYPE_LOGOUT) |
| 727 | return; |
| 728 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 729 | /* |
| 730 | * These fields are only used when logging in, and are blank |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 731 | * for logouts. |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 732 | */ |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 733 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 734 | # ifdef HAVE_HOST_IN_UTMPX |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 735 | strncpy(utx->ut_host, li->hostname, MIN_SIZEOF(utx->ut_host, li->hostname)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 736 | # endif |
| 737 | # ifdef HAVE_ADDR_IN_UTMPX |
Damien Miller | d6f204d | 2000-09-23 13:57:27 +1100 | [diff] [blame] | 738 | /* this is just a 32-bit IP address */ |
| 739 | if (li->hostaddr.sa.sa_family == AF_INET) |
| 740 | utx->ut_addr = li->hostaddr.sa_in.sin_addr.s_addr; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 741 | # endif |
Damien Miller | 02e16ad | 2003-01-03 14:42:27 +1100 | [diff] [blame] | 742 | # ifdef HAVE_ADDR_V6_IN_UTMP |
| 743 | /* this is just a 128-bit IPv6 address */ |
| 744 | if (li->hostaddr.sa.sa_family == AF_INET6) { |
| 745 | sa6 = ((struct sockaddr_in6 *)&li->hostaddr.sa); |
| 746 | memcpy(ut->ut_addr_v6, sa6->sin6_addr.s6_addr, 16); |
| 747 | if (IN6_IS_ADDR_V4MAPPED(&sa6->sin6_addr)) { |
| 748 | ut->ut_addr_v6[0] = ut->ut_addr_v6[3]; |
| 749 | ut->ut_addr_v6[1] = 0; |
| 750 | ut->ut_addr_v6[2] = 0; |
| 751 | ut->ut_addr_v6[3] = 0; |
| 752 | } |
| 753 | } |
| 754 | # endif |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 755 | # ifdef HAVE_SYSLEN_IN_UTMPX |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 756 | /* ut_syslen is the length of the utx_host string */ |
| 757 | utx->ut_syslen = MIN(strlen(li->hostname), sizeof(utx->ut_host)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 758 | # endif |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 759 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 760 | #endif /* USE_UTMPX || USE_WTMPX */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 761 | |
| 762 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 763 | ** Low-level utmp functions |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 764 | **/ |
| 765 | |
| 766 | /* FIXME: (ATL) utmp_write_direct needs testing */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 767 | #ifdef USE_UTMP |
| 768 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 769 | /* if we can, use pututline() etc. */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 770 | # if !defined(DISABLE_PUTUTLINE) && defined(HAVE_SETUTENT) && \ |
| 771 | defined(HAVE_PUTUTLINE) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 772 | # define UTMP_USE_LIBRARY |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 773 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 774 | |
| 775 | |
| 776 | /* write a utmp entry with the system's help (pututline() and pals) */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 777 | # ifdef UTMP_USE_LIBRARY |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 778 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 779 | utmp_write_library(struct logininfo *li, struct utmp *ut) |
| 780 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 781 | setutent(); |
| 782 | pututline(ut); |
| 783 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 784 | # ifdef HAVE_ENDUTENT |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 785 | endutent(); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 786 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 787 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 788 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 789 | # else /* UTMP_USE_LIBRARY */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 790 | |
| 791 | /* write a utmp entry direct to the file */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 792 | /* This is a slightly modification of code in OpenBSD's login.c */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 793 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 794 | utmp_write_direct(struct logininfo *li, struct utmp *ut) |
| 795 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 796 | struct utmp old_ut; |
| 797 | register int fd; |
| 798 | int tty; |
| 799 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 800 | /* FIXME: (ATL) ttyslot() needs local implementation */ |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 801 | |
Damien Miller | e5192fa | 2000-08-29 14:30:37 +1100 | [diff] [blame] | 802 | #if defined(HAVE_GETTTYENT) |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 803 | register struct ttyent *ty; |
| 804 | |
| 805 | tty=0; |
| 806 | |
| 807 | setttyent(); |
| 808 | while ((struct ttyent *)0 != (ty = getttyent())) { |
| 809 | tty++; |
| 810 | if (!strncmp(ty->ty_name, ut->ut_line, sizeof(ut->ut_line))) |
| 811 | break; |
| 812 | } |
| 813 | endttyent(); |
| 814 | |
| 815 | if((struct ttyent *)0 == ty) { |
Damien Miller | 996acd2 | 2003-04-09 20:59:48 +1000 | [diff] [blame] | 816 | logit("utmp_write_entry: tty not found"); |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 817 | return(1); |
| 818 | } |
| 819 | #else /* FIXME */ |
| 820 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 821 | tty = ttyslot(); /* seems only to work for /dev/ttyp? style names */ |
| 822 | |
Damien Miller | e5192fa | 2000-08-29 14:30:37 +1100 | [diff] [blame] | 823 | #endif /* HAVE_GETTTYENT */ |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 824 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 825 | if (tty > 0 && (fd = open(UTMP_FILE, O_RDWR|O_CREAT, 0644)) >= 0) { |
| 826 | (void)lseek(fd, (off_t)(tty * sizeof(struct utmp)), SEEK_SET); |
| 827 | /* |
| 828 | * Prevent luser from zero'ing out ut_host. |
| 829 | * If the new ut_line is empty but the old one is not |
Damien Miller | 7a0e5dc | 2000-07-11 12:15:54 +1000 | [diff] [blame] | 830 | * and ut_line and ut_name match, preserve the old ut_line. |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 831 | */ |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 832 | if (atomicio(read, fd, &old_ut, sizeof(old_ut)) == sizeof(old_ut) && |
| 833 | (ut->ut_host[0] == '\0') && (old_ut.ut_host[0] != '\0') && |
| 834 | (strncmp(old_ut.ut_line, ut->ut_line, sizeof(ut->ut_line)) == 0) && |
Damien Miller | 7a0e5dc | 2000-07-11 12:15:54 +1000 | [diff] [blame] | 835 | (strncmp(old_ut.ut_name, ut->ut_name, sizeof(ut->ut_name)) == 0)) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 836 | (void)memcpy(ut->ut_host, old_ut.ut_host, sizeof(ut->ut_host)); |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 837 | } |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 838 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 839 | (void)lseek(fd, (off_t)(tty * sizeof(struct utmp)), SEEK_SET); |
Darren Tucker | 8661b56 | 2003-07-06 15:20:46 +1000 | [diff] [blame^] | 840 | if (atomicio(vwrite, fd, ut, sizeof(*ut)) != sizeof(*ut)) |
Damien Miller | 996acd2 | 2003-04-09 20:59:48 +1000 | [diff] [blame] | 841 | logit("utmp_write_direct: error writing %s: %s", |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 842 | UTMP_FILE, strerror(errno)); |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 843 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 844 | (void)close(fd); |
| 845 | return 1; |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 846 | } else { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 847 | return 0; |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 848 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 849 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 850 | # endif /* UTMP_USE_LIBRARY */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 851 | |
| 852 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 853 | utmp_perform_login(struct logininfo *li) |
| 854 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 855 | struct utmp ut; |
| 856 | |
| 857 | construct_utmp(li, &ut); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 858 | # ifdef UTMP_USE_LIBRARY |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 859 | if (!utmp_write_library(li, &ut)) { |
Damien Miller | 996acd2 | 2003-04-09 20:59:48 +1000 | [diff] [blame] | 860 | logit("utmp_perform_login: utmp_write_library() failed"); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 861 | return 0; |
| 862 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 863 | # else |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 864 | if (!utmp_write_direct(li, &ut)) { |
Damien Miller | 996acd2 | 2003-04-09 20:59:48 +1000 | [diff] [blame] | 865 | logit("utmp_perform_login: utmp_write_direct() failed"); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 866 | return 0; |
| 867 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 868 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 869 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 870 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 871 | |
| 872 | |
| 873 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 874 | utmp_perform_logout(struct logininfo *li) |
| 875 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 876 | struct utmp ut; |
| 877 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 878 | construct_utmp(li, &ut); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 879 | # ifdef UTMP_USE_LIBRARY |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 880 | if (!utmp_write_library(li, &ut)) { |
Damien Miller | 996acd2 | 2003-04-09 20:59:48 +1000 | [diff] [blame] | 881 | logit("utmp_perform_logout: utmp_write_library() failed"); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 882 | return 0; |
| 883 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 884 | # else |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 885 | if (!utmp_write_direct(li, &ut)) { |
Damien Miller | 996acd2 | 2003-04-09 20:59:48 +1000 | [diff] [blame] | 886 | logit("utmp_perform_logout: utmp_write_direct() failed"); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 887 | return 0; |
| 888 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 889 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 890 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 891 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 892 | |
| 893 | |
| 894 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 895 | utmp_write_entry(struct logininfo *li) |
| 896 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 897 | switch(li->type) { |
| 898 | case LTYPE_LOGIN: |
| 899 | return utmp_perform_login(li); |
| 900 | |
| 901 | case LTYPE_LOGOUT: |
| 902 | return utmp_perform_logout(li); |
| 903 | |
| 904 | default: |
Damien Miller | 996acd2 | 2003-04-09 20:59:48 +1000 | [diff] [blame] | 905 | logit("utmp_write_entry: invalid type field"); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 906 | return 0; |
| 907 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 908 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 909 | #endif /* USE_UTMP */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 910 | |
| 911 | |
| 912 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 913 | ** Low-level utmpx functions |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 914 | **/ |
| 915 | |
| 916 | /* not much point if we don't want utmpx entries */ |
| 917 | #ifdef USE_UTMPX |
| 918 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 919 | /* if we have the wherewithall, use pututxline etc. */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 920 | # if !defined(DISABLE_PUTUTXLINE) && defined(HAVE_SETUTXENT) && \ |
| 921 | defined(HAVE_PUTUTXLINE) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 922 | # define UTMPX_USE_LIBRARY |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 923 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 924 | |
| 925 | |
| 926 | /* write a utmpx entry with the system's help (pututxline() and pals) */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 927 | # ifdef UTMPX_USE_LIBRARY |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 928 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 929 | utmpx_write_library(struct logininfo *li, struct utmpx *utx) |
| 930 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 931 | setutxent(); |
| 932 | pututxline(utx); |
| 933 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 934 | # ifdef HAVE_ENDUTXENT |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 935 | endutxent(); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 936 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 937 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 938 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 939 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 940 | # else /* UTMPX_USE_LIBRARY */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 941 | |
| 942 | /* write a utmp entry direct to the file */ |
| 943 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 944 | utmpx_write_direct(struct logininfo *li, struct utmpx *utx) |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 945 | { |
Damien Miller | 996acd2 | 2003-04-09 20:59:48 +1000 | [diff] [blame] | 946 | logit("utmpx_write_direct: not implemented!"); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 947 | return 0; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 948 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 949 | # endif /* UTMPX_USE_LIBRARY */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 950 | |
| 951 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 952 | utmpx_perform_login(struct logininfo *li) |
| 953 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 954 | struct utmpx utx; |
| 955 | |
| 956 | construct_utmpx(li, &utx); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 957 | # ifdef UTMPX_USE_LIBRARY |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 958 | if (!utmpx_write_library(li, &utx)) { |
Damien Miller | 996acd2 | 2003-04-09 20:59:48 +1000 | [diff] [blame] | 959 | logit("utmpx_perform_login: utmp_write_library() failed"); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 960 | return 0; |
| 961 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 962 | # else |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 963 | if (!utmpx_write_direct(li, &ut)) { |
Damien Miller | 996acd2 | 2003-04-09 20:59:48 +1000 | [diff] [blame] | 964 | logit("utmpx_perform_login: utmp_write_direct() failed"); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 965 | return 0; |
| 966 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 967 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 968 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 969 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 970 | |
| 971 | |
| 972 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 973 | utmpx_perform_logout(struct logininfo *li) |
| 974 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 975 | struct utmpx utx; |
| 976 | |
Tim Rice | e06ae4a | 2002-02-24 17:56:46 -0800 | [diff] [blame] | 977 | construct_utmpx(li, &utx); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 978 | # ifdef HAVE_ID_IN_UTMPX |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 979 | line_abbrevname(utx.ut_id, li->line, sizeof(utx.ut_id)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 980 | # endif |
| 981 | # ifdef HAVE_TYPE_IN_UTMPX |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 982 | utx.ut_type = DEAD_PROCESS; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 983 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 984 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 985 | # ifdef UTMPX_USE_LIBRARY |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 986 | utmpx_write_library(li, &utx); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 987 | # else |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 988 | utmpx_write_direct(li, &utx); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 989 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 990 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 991 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 992 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 993 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 994 | utmpx_write_entry(struct logininfo *li) |
| 995 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 996 | switch(li->type) { |
| 997 | case LTYPE_LOGIN: |
| 998 | return utmpx_perform_login(li); |
| 999 | case LTYPE_LOGOUT: |
| 1000 | return utmpx_perform_logout(li); |
| 1001 | default: |
Damien Miller | 996acd2 | 2003-04-09 20:59:48 +1000 | [diff] [blame] | 1002 | logit("utmpx_write_entry: invalid type field"); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1003 | return 0; |
| 1004 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1005 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1006 | #endif /* USE_UTMPX */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1007 | |
| 1008 | |
| 1009 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1010 | ** Low-level wtmp functions |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1011 | **/ |
| 1012 | |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1013 | #ifdef USE_WTMP |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1014 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1015 | /* write a wtmp entry direct to the end of the file */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1016 | /* This is a slight modification of code in OpenBSD's logwtmp.c */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1017 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1018 | wtmp_write(struct logininfo *li, struct utmp *ut) |
| 1019 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1020 | struct stat buf; |
| 1021 | int fd, ret = 1; |
| 1022 | |
| 1023 | if ((fd = open(WTMP_FILE, O_WRONLY|O_APPEND, 0)) < 0) { |
Damien Miller | 996acd2 | 2003-04-09 20:59:48 +1000 | [diff] [blame] | 1024 | logit("wtmp_write: problem writing %s: %s", |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1025 | WTMP_FILE, strerror(errno)); |
| 1026 | return 0; |
| 1027 | } |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1028 | if (fstat(fd, &buf) == 0) |
Darren Tucker | 8661b56 | 2003-07-06 15:20:46 +1000 | [diff] [blame^] | 1029 | if (atomicio(vwrite, fd, ut, sizeof(*ut)) != sizeof(*ut)) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1030 | ftruncate(fd, buf.st_size); |
Damien Miller | 996acd2 | 2003-04-09 20:59:48 +1000 | [diff] [blame] | 1031 | logit("wtmp_write: problem writing %s: %s", |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1032 | WTMP_FILE, strerror(errno)); |
| 1033 | ret = 0; |
| 1034 | } |
| 1035 | (void)close(fd); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1036 | return ret; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1037 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1038 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1039 | static int |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1040 | wtmp_perform_login(struct logininfo *li) |
| 1041 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1042 | struct utmp ut; |
| 1043 | |
| 1044 | construct_utmp(li, &ut); |
| 1045 | return wtmp_write(li, &ut); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1046 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1047 | |
| 1048 | |
| 1049 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1050 | wtmp_perform_logout(struct logininfo *li) |
| 1051 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1052 | struct utmp ut; |
| 1053 | |
| 1054 | construct_utmp(li, &ut); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1055 | return wtmp_write(li, &ut); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1056 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1057 | |
| 1058 | |
| 1059 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1060 | wtmp_write_entry(struct logininfo *li) |
| 1061 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1062 | switch(li->type) { |
| 1063 | case LTYPE_LOGIN: |
| 1064 | return wtmp_perform_login(li); |
| 1065 | case LTYPE_LOGOUT: |
| 1066 | return wtmp_perform_logout(li); |
| 1067 | default: |
Damien Miller | 996acd2 | 2003-04-09 20:59:48 +1000 | [diff] [blame] | 1068 | logit("wtmp_write_entry: invalid type field"); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1069 | return 0; |
| 1070 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1071 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1072 | |
| 1073 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1074 | /* Notes on fetching login data from wtmp/wtmpx |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1075 | * |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1076 | * Logouts are usually recorded with (amongst other things) a blank |
| 1077 | * username on a given tty line. However, some systems (HP-UX is one) |
| 1078 | * leave all fields set, but change the ut_type field to DEAD_PROCESS. |
| 1079 | * |
| 1080 | * Since we're only looking for logins here, we know that the username |
| 1081 | * must be set correctly. On systems that leave it in, we check for |
| 1082 | * ut_type==USER_PROCESS (indicating a login.) |
| 1083 | * |
| 1084 | * Portability: Some systems may set something other than USER_PROCESS |
| 1085 | * to indicate a login process. I don't know of any as I write. Also, |
| 1086 | * it's possible that some systems may both leave the username in |
| 1087 | * place and not have ut_type. |
| 1088 | */ |
| 1089 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1090 | /* return true if this wtmp entry indicates a login */ |
| 1091 | static int |
| 1092 | wtmp_islogin(struct logininfo *li, struct utmp *ut) |
| 1093 | { |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1094 | if (strncmp(li->username, ut->ut_name, |
Damien Miller | 7a0e5dc | 2000-07-11 12:15:54 +1000 | [diff] [blame] | 1095 | MIN_SIZEOF(li->username, ut->ut_name)) == 0) { |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1096 | # ifdef HAVE_TYPE_IN_UTMP |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1097 | if (ut->ut_type & USER_PROCESS) |
| 1098 | return 1; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1099 | # else |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1100 | return 1; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1101 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1102 | } |
| 1103 | return 0; |
| 1104 | } |
| 1105 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1106 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1107 | wtmp_get_entry(struct logininfo *li) |
| 1108 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1109 | struct stat st; |
| 1110 | struct utmp ut; |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1111 | int fd, found=0; |
| 1112 | |
| 1113 | /* Clear the time entries in our logininfo */ |
| 1114 | li->tv_sec = li->tv_usec = 0; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1115 | |
| 1116 | if ((fd = open(WTMP_FILE, O_RDONLY)) < 0) { |
Damien Miller | 996acd2 | 2003-04-09 20:59:48 +1000 | [diff] [blame] | 1117 | logit("wtmp_get_entry: problem opening %s: %s", |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1118 | WTMP_FILE, strerror(errno)); |
| 1119 | return 0; |
| 1120 | } |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1121 | if (fstat(fd, &st) != 0) { |
Damien Miller | 996acd2 | 2003-04-09 20:59:48 +1000 | [diff] [blame] | 1122 | logit("wtmp_get_entry: couldn't stat %s: %s", |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1123 | WTMP_FILE, strerror(errno)); |
| 1124 | close(fd); |
| 1125 | return 0; |
| 1126 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1127 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1128 | /* Seek to the start of the last struct utmp */ |
Kevin Steves | 5217265 | 2001-10-02 00:29:00 +0000 | [diff] [blame] | 1129 | if (lseek(fd, -(off_t)sizeof(struct utmp), SEEK_END) == -1) { |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1130 | /* Looks like we've got a fresh wtmp file */ |
| 1131 | close(fd); |
| 1132 | return 0; |
| 1133 | } |
| 1134 | |
| 1135 | while (!found) { |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 1136 | if (atomicio(read, fd, &ut, sizeof(ut)) != sizeof(ut)) { |
Damien Miller | 996acd2 | 2003-04-09 20:59:48 +1000 | [diff] [blame] | 1137 | logit("wtmp_get_entry: read of %s failed: %s", |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1138 | WTMP_FILE, strerror(errno)); |
| 1139 | close (fd); |
| 1140 | return 0; |
| 1141 | } |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1142 | if ( wtmp_islogin(li, &ut) ) { |
| 1143 | found = 1; |
| 1144 | /* We've already checked for a time in struct |
| 1145 | * utmp, in login_getlast(). */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1146 | # ifdef HAVE_TIME_IN_UTMP |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1147 | li->tv_sec = ut.ut_time; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1148 | # else |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1149 | # if HAVE_TV_IN_UTMP |
| 1150 | li->tv_sec = ut.ut_tv.tv_sec; |
| 1151 | # endif |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1152 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1153 | line_fullname(li->line, ut.ut_line, |
| 1154 | MIN_SIZEOF(li->line, ut.ut_line)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1155 | # ifdef HAVE_HOST_IN_UTMP |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1156 | strlcpy(li->hostname, ut.ut_host, |
| 1157 | MIN_SIZEOF(li->hostname, ut.ut_host)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1158 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1159 | continue; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1160 | } |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1161 | /* Seek back 2 x struct utmp */ |
Kevin Steves | 5217265 | 2001-10-02 00:29:00 +0000 | [diff] [blame] | 1162 | if (lseek(fd, -(off_t)(2 * sizeof(struct utmp)), SEEK_CUR) == -1) { |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1163 | /* We've found the start of the file, so quit */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1164 | close (fd); |
| 1165 | return 0; |
| 1166 | } |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1167 | } |
| 1168 | |
| 1169 | /* We found an entry. Tidy up and return */ |
| 1170 | close(fd); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1171 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1172 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1173 | # endif /* USE_WTMP */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1174 | |
| 1175 | |
| 1176 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1177 | ** Low-level wtmpx functions |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1178 | **/ |
| 1179 | |
| 1180 | #ifdef USE_WTMPX |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1181 | /* write a wtmpx entry direct to the end of the file */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1182 | /* This is a slight modification of code in OpenBSD's logwtmp.c */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1183 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1184 | wtmpx_write(struct logininfo *li, struct utmpx *utx) |
| 1185 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1186 | struct stat buf; |
| 1187 | int fd, ret = 1; |
| 1188 | |
| 1189 | if ((fd = open(WTMPX_FILE, O_WRONLY|O_APPEND, 0)) < 0) { |
Damien Miller | 996acd2 | 2003-04-09 20:59:48 +1000 | [diff] [blame] | 1190 | logit("wtmpx_write: problem opening %s: %s", |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1191 | WTMPX_FILE, strerror(errno)); |
| 1192 | return 0; |
| 1193 | } |
| 1194 | |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1195 | if (fstat(fd, &buf) == 0) |
Darren Tucker | 8661b56 | 2003-07-06 15:20:46 +1000 | [diff] [blame^] | 1196 | if (atomicio(vwrite, fd, utx, sizeof(*utx)) != sizeof(*utx)) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1197 | ftruncate(fd, buf.st_size); |
Damien Miller | 996acd2 | 2003-04-09 20:59:48 +1000 | [diff] [blame] | 1198 | logit("wtmpx_write: problem writing %s: %s", |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1199 | WTMPX_FILE, strerror(errno)); |
| 1200 | ret = 0; |
| 1201 | } |
| 1202 | (void)close(fd); |
| 1203 | |
| 1204 | return ret; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1205 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1206 | |
| 1207 | |
| 1208 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1209 | wtmpx_perform_login(struct logininfo *li) |
| 1210 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1211 | struct utmpx utx; |
| 1212 | |
| 1213 | construct_utmpx(li, &utx); |
| 1214 | return wtmpx_write(li, &utx); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1215 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1216 | |
| 1217 | |
| 1218 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1219 | wtmpx_perform_logout(struct logininfo *li) |
| 1220 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1221 | struct utmpx utx; |
| 1222 | |
| 1223 | construct_utmpx(li, &utx); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1224 | return wtmpx_write(li, &utx); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1225 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1226 | |
| 1227 | |
| 1228 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1229 | wtmpx_write_entry(struct logininfo *li) |
| 1230 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1231 | switch(li->type) { |
| 1232 | case LTYPE_LOGIN: |
| 1233 | return wtmpx_perform_login(li); |
| 1234 | case LTYPE_LOGOUT: |
| 1235 | return wtmpx_perform_logout(li); |
| 1236 | default: |
Damien Miller | 996acd2 | 2003-04-09 20:59:48 +1000 | [diff] [blame] | 1237 | logit("wtmpx_write_entry: invalid type field"); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1238 | return 0; |
| 1239 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1240 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1241 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1242 | /* Please see the notes above wtmp_islogin() for information about the |
| 1243 | next two functions */ |
| 1244 | |
| 1245 | /* Return true if this wtmpx entry indicates a login */ |
| 1246 | static int |
| 1247 | wtmpx_islogin(struct logininfo *li, struct utmpx *utx) |
| 1248 | { |
Damien Miller | 7a0e5dc | 2000-07-11 12:15:54 +1000 | [diff] [blame] | 1249 | if ( strncmp(li->username, utx->ut_name, |
| 1250 | MIN_SIZEOF(li->username, utx->ut_name)) == 0 ) { |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1251 | # ifdef HAVE_TYPE_IN_UTMPX |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1252 | if (utx->ut_type == USER_PROCESS) |
| 1253 | return 1; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1254 | # else |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1255 | return 1; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1256 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1257 | } |
| 1258 | return 0; |
| 1259 | } |
| 1260 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1261 | |
| 1262 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1263 | wtmpx_get_entry(struct logininfo *li) |
| 1264 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1265 | struct stat st; |
| 1266 | struct utmpx utx; |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1267 | int fd, found=0; |
| 1268 | |
| 1269 | /* Clear the time entries */ |
| 1270 | li->tv_sec = li->tv_usec = 0; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1271 | |
| 1272 | if ((fd = open(WTMPX_FILE, O_RDONLY)) < 0) { |
Damien Miller | 996acd2 | 2003-04-09 20:59:48 +1000 | [diff] [blame] | 1273 | logit("wtmpx_get_entry: problem opening %s: %s", |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1274 | WTMPX_FILE, strerror(errno)); |
| 1275 | return 0; |
| 1276 | } |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1277 | if (fstat(fd, &st) != 0) { |
Damien Miller | 996acd2 | 2003-04-09 20:59:48 +1000 | [diff] [blame] | 1278 | logit("wtmpx_get_entry: couldn't stat %s: %s", |
Tim Rice | cdb8294 | 2002-07-14 15:33:20 -0700 | [diff] [blame] | 1279 | WTMPX_FILE, strerror(errno)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1280 | close(fd); |
| 1281 | return 0; |
| 1282 | } |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1283 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1284 | /* Seek to the start of the last struct utmpx */ |
Kevin Steves | 5217265 | 2001-10-02 00:29:00 +0000 | [diff] [blame] | 1285 | if (lseek(fd, -(off_t)sizeof(struct utmpx), SEEK_END) == -1 ) { |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1286 | /* probably a newly rotated wtmpx file */ |
| 1287 | close(fd); |
| 1288 | return 0; |
| 1289 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1290 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1291 | while (!found) { |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 1292 | if (atomicio(read, fd, &utx, sizeof(utx)) != sizeof(utx)) { |
Damien Miller | 996acd2 | 2003-04-09 20:59:48 +1000 | [diff] [blame] | 1293 | logit("wtmpx_get_entry: read of %s failed: %s", |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1294 | WTMPX_FILE, strerror(errno)); |
| 1295 | close (fd); |
| 1296 | return 0; |
| 1297 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1298 | /* Logouts are recorded as a blank username on a particular line. |
| 1299 | * So, we just need to find the username in struct utmpx */ |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1300 | if ( wtmpx_islogin(li, &utx) ) { |
Tim Rice | 370e0ba | 2002-07-14 15:50:51 -0700 | [diff] [blame] | 1301 | found = 1; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1302 | # ifdef HAVE_TV_IN_UTMPX |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1303 | li->tv_sec = utx.ut_tv.tv_sec; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1304 | # else |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1305 | # ifdef HAVE_TIME_IN_UTMPX |
| 1306 | li->tv_sec = utx.ut_time; |
| 1307 | # endif |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1308 | # endif |
Damien Miller | 1a13225 | 2000-06-13 21:23:17 +1000 | [diff] [blame] | 1309 | line_fullname(li->line, utx.ut_line, sizeof(li->line)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1310 | # ifdef HAVE_HOST_IN_UTMPX |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1311 | strlcpy(li->hostname, utx.ut_host, |
| 1312 | MIN_SIZEOF(li->hostname, utx.ut_host)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1313 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1314 | continue; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1315 | } |
Kevin Steves | 5217265 | 2001-10-02 00:29:00 +0000 | [diff] [blame] | 1316 | if (lseek(fd, -(off_t)(2 * sizeof(struct utmpx)), SEEK_CUR) == -1) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1317 | close (fd); |
| 1318 | return 0; |
| 1319 | } |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1320 | } |
| 1321 | |
| 1322 | close(fd); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1323 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1324 | } |
Damien Miller | d5bf307 | 2000-06-07 21:32:13 +1000 | [diff] [blame] | 1325 | #endif /* USE_WTMPX */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1326 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1327 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1328 | ** Low-level libutil login() functions |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1329 | **/ |
| 1330 | |
| 1331 | #ifdef USE_LOGIN |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1332 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1333 | syslogin_perform_login(struct logininfo *li) |
| 1334 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1335 | struct utmp *ut; |
| 1336 | |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 1337 | if (! (ut = (struct utmp *)malloc(sizeof(*ut)))) { |
Damien Miller | 996acd2 | 2003-04-09 20:59:48 +1000 | [diff] [blame] | 1338 | logit("syslogin_perform_login: couldn't malloc()"); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1339 | return 0; |
| 1340 | } |
| 1341 | construct_utmp(li, ut); |
| 1342 | login(ut); |
Damien Miller | f211efc | 2003-03-10 11:23:06 +1100 | [diff] [blame] | 1343 | free(ut); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1344 | |
| 1345 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1346 | } |
| 1347 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1348 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1349 | syslogin_perform_logout(struct logininfo *li) |
| 1350 | { |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1351 | # ifdef HAVE_LOGOUT |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1352 | char line[8]; |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1353 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1354 | (void)line_stripname(line, li->line, sizeof(line)); |
| 1355 | |
| 1356 | if (!logout(line)) { |
Damien Miller | 996acd2 | 2003-04-09 20:59:48 +1000 | [diff] [blame] | 1357 | logit("syslogin_perform_logout: logout() returned an error"); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1358 | # ifdef HAVE_LOGWTMP |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1359 | } else { |
| 1360 | logwtmp(line, "", ""); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1361 | # endif |
Damien Miller | 9b6d4ab | 2000-07-02 08:43:18 +1000 | [diff] [blame] | 1362 | } |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1363 | /* FIXME: (ATL - if the need arises) What to do if we have |
| 1364 | * login, but no logout? what if logout but no logwtmp? All |
| 1365 | * routines are in libutil so they should all be there, |
| 1366 | * but... */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1367 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1368 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1369 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1370 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1371 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1372 | syslogin_write_entry(struct logininfo *li) |
| 1373 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1374 | switch (li->type) { |
| 1375 | case LTYPE_LOGIN: |
| 1376 | return syslogin_perform_login(li); |
| 1377 | case LTYPE_LOGOUT: |
| 1378 | return syslogin_perform_logout(li); |
| 1379 | default: |
Damien Miller | 996acd2 | 2003-04-09 20:59:48 +1000 | [diff] [blame] | 1380 | logit("syslogin_write_entry: Invalid type field"); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1381 | return 0; |
| 1382 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1383 | } |
Damien Miller | d5bf307 | 2000-06-07 21:32:13 +1000 | [diff] [blame] | 1384 | #endif /* USE_LOGIN */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1385 | |
| 1386 | /* end of file log-syslogin.c */ |
| 1387 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1388 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1389 | ** Low-level lastlog functions |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1390 | **/ |
| 1391 | |
| 1392 | #ifdef USE_LASTLOG |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1393 | #define LL_FILE 1 |
| 1394 | #define LL_DIR 2 |
| 1395 | #define LL_OTHER 3 |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1396 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1397 | static void |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1398 | lastlog_construct(struct logininfo *li, struct lastlog *last) |
| 1399 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1400 | /* clear the structure */ |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 1401 | memset(last, '\0', sizeof(*last)); |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1402 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1403 | (void)line_stripname(last->ll_line, li->line, sizeof(last->ll_line)); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1404 | strlcpy(last->ll_host, li->hostname, |
| 1405 | MIN_SIZEOF(last->ll_host, li->hostname)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1406 | last->ll_time = li->tv_sec; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1407 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1408 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1409 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1410 | lastlog_filetype(char *filename) |
| 1411 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1412 | struct stat st; |
| 1413 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1414 | if (stat(LASTLOG_FILE, &st) != 0) { |
Damien Miller | 996acd2 | 2003-04-09 20:59:48 +1000 | [diff] [blame] | 1415 | logit("lastlog_perform_login: Couldn't stat %s: %s", LASTLOG_FILE, |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1416 | strerror(errno)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1417 | return 0; |
| 1418 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1419 | if (S_ISDIR(st.st_mode)) |
| 1420 | return LL_DIR; |
| 1421 | else if (S_ISREG(st.st_mode)) |
| 1422 | return LL_FILE; |
| 1423 | else |
| 1424 | return LL_OTHER; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1425 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1426 | |
| 1427 | |
| 1428 | /* open the file (using filemode) and seek to the login entry */ |
| 1429 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1430 | lastlog_openseek(struct logininfo *li, int *fd, int filemode) |
| 1431 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1432 | off_t offset; |
| 1433 | int type; |
| 1434 | char lastlog_file[1024]; |
| 1435 | |
| 1436 | type = lastlog_filetype(LASTLOG_FILE); |
| 1437 | switch (type) { |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 1438 | case LL_FILE: |
| 1439 | strlcpy(lastlog_file, LASTLOG_FILE, sizeof(lastlog_file)); |
| 1440 | break; |
| 1441 | case LL_DIR: |
| 1442 | snprintf(lastlog_file, sizeof(lastlog_file), "%s/%s", |
| 1443 | LASTLOG_FILE, li->username); |
| 1444 | break; |
| 1445 | default: |
Damien Miller | 996acd2 | 2003-04-09 20:59:48 +1000 | [diff] [blame] | 1446 | logit("lastlog_openseek: %.100s is not a file or directory!", |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 1447 | LASTLOG_FILE); |
| 1448 | return 0; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1449 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1450 | |
Damien Miller | 405dc60 | 2003-04-09 21:12:52 +1000 | [diff] [blame] | 1451 | *fd = open(lastlog_file, filemode, 0600); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1452 | if ( *fd < 0) { |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 1453 | debug("lastlog_openseek: Couldn't open %s: %s", |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1454 | lastlog_file, strerror(errno)); |
| 1455 | return 0; |
| 1456 | } |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1457 | |
Damien Miller | e477ef6 | 2000-08-15 10:21:17 +1000 | [diff] [blame] | 1458 | if (type == LL_FILE) { |
| 1459 | /* find this uid's offset in the lastlog file */ |
Kevin Steves | 5217265 | 2001-10-02 00:29:00 +0000 | [diff] [blame] | 1460 | offset = (off_t) ((long)li->uid * sizeof(struct lastlog)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1461 | |
Damien Miller | e477ef6 | 2000-08-15 10:21:17 +1000 | [diff] [blame] | 1462 | if ( lseek(*fd, offset, SEEK_SET) != offset ) { |
Damien Miller | 996acd2 | 2003-04-09 20:59:48 +1000 | [diff] [blame] | 1463 | logit("lastlog_openseek: %s->lseek(): %s", |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1464 | lastlog_file, strerror(errno)); |
Damien Miller | e477ef6 | 2000-08-15 10:21:17 +1000 | [diff] [blame] | 1465 | return 0; |
| 1466 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1467 | } |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1468 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1469 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1470 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1471 | |
| 1472 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1473 | lastlog_perform_login(struct logininfo *li) |
| 1474 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1475 | struct lastlog last; |
| 1476 | int fd; |
| 1477 | |
| 1478 | /* create our struct lastlog */ |
| 1479 | lastlog_construct(li, &last); |
| 1480 | |
Damien Miller | 405dc60 | 2003-04-09 21:12:52 +1000 | [diff] [blame] | 1481 | if (!lastlog_openseek(li, &fd, O_RDWR|O_CREAT)) |
Damien Miller | c1132e7 | 2000-08-18 14:08:38 +1000 | [diff] [blame] | 1482 | return(0); |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1483 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1484 | /* write the entry */ |
Darren Tucker | 8661b56 | 2003-07-06 15:20:46 +1000 | [diff] [blame^] | 1485 | if (atomicio(vwrite, fd, &last, sizeof(last)) != sizeof(last)) { |
Damien Miller | c1132e7 | 2000-08-18 14:08:38 +1000 | [diff] [blame] | 1486 | close(fd); |
Damien Miller | 996acd2 | 2003-04-09 20:59:48 +1000 | [diff] [blame] | 1487 | logit("lastlog_write_filemode: Error writing to %s: %s", |
Damien Miller | c1132e7 | 2000-08-18 14:08:38 +1000 | [diff] [blame] | 1488 | LASTLOG_FILE, strerror(errno)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1489 | return 0; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1490 | } |
Damien Miller | c1132e7 | 2000-08-18 14:08:38 +1000 | [diff] [blame] | 1491 | |
| 1492 | close(fd); |
| 1493 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1494 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1495 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1496 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1497 | lastlog_write_entry(struct logininfo *li) |
| 1498 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1499 | switch(li->type) { |
| 1500 | case LTYPE_LOGIN: |
| 1501 | return lastlog_perform_login(li); |
| 1502 | default: |
Damien Miller | 996acd2 | 2003-04-09 20:59:48 +1000 | [diff] [blame] | 1503 | logit("lastlog_write_entry: Invalid type field"); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1504 | return 0; |
| 1505 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1506 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1507 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1508 | static void |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1509 | lastlog_populate_entry(struct logininfo *li, struct lastlog *last) |
| 1510 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1511 | line_fullname(li->line, last->ll_line, sizeof(li->line)); |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1512 | strlcpy(li->hostname, last->ll_host, |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1513 | MIN_SIZEOF(li->hostname, last->ll_host)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1514 | li->tv_sec = last->ll_time; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1515 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1516 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1517 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1518 | lastlog_get_entry(struct logininfo *li) |
| 1519 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1520 | struct lastlog last; |
Damien Miller | 7df881d | 2003-01-07 16:46:58 +1100 | [diff] [blame] | 1521 | int fd, ret; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1522 | |
Damien Miller | 3a8a5cd | 2001-10-22 16:49:22 +1000 | [diff] [blame] | 1523 | if (!lastlog_openseek(li, &fd, O_RDONLY)) |
Damien Miller | 7df881d | 2003-01-07 16:46:58 +1100 | [diff] [blame] | 1524 | return (0); |
Damien Miller | 3a8a5cd | 2001-10-22 16:49:22 +1000 | [diff] [blame] | 1525 | |
Damien Miller | 7df881d | 2003-01-07 16:46:58 +1100 | [diff] [blame] | 1526 | ret = atomicio(read, fd, &last, sizeof(last)); |
Damien Miller | 3a8a5cd | 2001-10-22 16:49:22 +1000 | [diff] [blame] | 1527 | close(fd); |
| 1528 | |
Damien Miller | 7df881d | 2003-01-07 16:46:58 +1100 | [diff] [blame] | 1529 | switch (ret) { |
| 1530 | case 0: |
| 1531 | memset(&last, '\0', sizeof(last)); |
| 1532 | /* FALLTHRU */ |
| 1533 | case sizeof(last): |
| 1534 | lastlog_populate_entry(li, &last); |
| 1535 | return (1); |
| 1536 | case -1: |
| 1537 | error("%s: Error reading from %s: %s", __func__, |
| 1538 | LASTLOG_FILE, strerror(errno)); |
| 1539 | return (0); |
| 1540 | default: |
| 1541 | error("%s: Error reading from %s: Expecting %d, got %d", |
| 1542 | __func__, LASTLOG_FILE, sizeof(last), ret); |
| 1543 | return (0); |
| 1544 | } |
Damien Miller | 3a8a5cd | 2001-10-22 16:49:22 +1000 | [diff] [blame] | 1545 | |
Damien Miller | 7df881d | 2003-01-07 16:46:58 +1100 | [diff] [blame] | 1546 | /* NOTREACHED */ |
| 1547 | return (0); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1548 | } |
Damien Miller | d5bf307 | 2000-06-07 21:32:13 +1000 | [diff] [blame] | 1549 | #endif /* USE_LASTLOG */ |