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. |
| 15 | * 3. All advertising materials mentioning features or use of this software |
| 16 | * must display the following acknowledgement: |
| 17 | * This product includes software developed by Markus Friedl. |
| 18 | * 4. The name of the author may not be used to endorse or promote products |
| 19 | * derived from this software without specific prior written permission. |
| 20 | * |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 22 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 23 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 24 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 25 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 26 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 27 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 28 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 29 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 30 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 31 | */ |
| 32 | |
| 33 | /** |
| 34 | ** loginrec.c: platform-independent login recording and lastlog retrieval |
| 35 | **/ |
| 36 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 37 | /* |
| 38 | The new login code explained |
| 39 | ============================ |
| 40 | |
| 41 | This code attempts to provide a common interface to login recording |
| 42 | (utmp and friends) and last login time retrieval. |
| 43 | |
| 44 | Its primary means of achieving this is to use 'struct logininfo', a |
| 45 | union of all the useful fields in the various different types of |
| 46 | system login record structures one finds on UNIX variants. |
| 47 | |
| 48 | We depend on autoconf to define which recording methods are to be |
| 49 | used, and which fields are contained in the relevant data structures |
| 50 | on the local system. Many C preprocessor symbols affect which code |
| 51 | gets compiled here. |
| 52 | |
| 53 | The code is designed to make it easy to modify a particular |
| 54 | recording method, without affecting other methods nor requiring so |
| 55 | many nested conditional compilation blocks as were commonplace in |
| 56 | the old code. |
| 57 | |
| 58 | For login recording, we try to use the local system's libraries as |
| 59 | these are clearly most likely to work correctly. For utmp systems |
| 60 | this usually means login() and logout() or setutent() etc., probably |
| 61 | in libutil, along with logwtmp() etc. On these systems, we fall back |
| 62 | to writing the files directly if we have to, though this method |
| 63 | requires very thorough testing so we do not corrupt local auditing |
| 64 | information. These files and their access methods are very system |
| 65 | specific indeed. |
| 66 | |
| 67 | For utmpx systems, the corresponding library functions are |
| 68 | setutxent() etc. To the author's knowledge, all utmpx systems have |
| 69 | these library functions and so no direct write is attempted. If such |
| 70 | a system exists and needs support, direct analogues of the [uw]tmp |
| 71 | code should suffice. |
| 72 | |
| 73 | Retrieving the time of last login ('lastlog') is in some ways even |
| 74 | more problemmatic than login recording. Some systems provide a |
| 75 | simple table of all users which we seek based on uid and retrieve a |
| 76 | relatively standard structure. Others record the same information in |
| 77 | a directory with a separate file, and others don't record the |
| 78 | information separately at all. For systems in the latter category, |
| 79 | we look backwards in the wtmp or wtmpx file for the last login entry |
| 80 | for our user. Naturally this is slower and on busy systems could |
| 81 | incur a significant performance penalty. |
| 82 | |
| 83 | Calling the new code |
| 84 | -------------------- |
| 85 | |
| 86 | In OpenSSH all login recording and retrieval is performed in |
| 87 | login.c. Here you'll find working examples. Also, in the logintest.c |
| 88 | program there are more examples. |
| 89 | |
| 90 | Internal handler calling method |
| 91 | ------------------------------- |
| 92 | |
| 93 | When a call is made to login_login() or login_logout(), both |
| 94 | routines set a struct logininfo flag defining which action (log in, |
| 95 | or log out) is to be taken. They both then call login_write(), which |
| 96 | calls whichever of the many structure-specific handlers autoconf |
| 97 | selects for the local system. |
| 98 | |
| 99 | The handlers themselves handle system data structure specifics. Both |
| 100 | struct utmp and struct utmpx have utility functions (see |
| 101 | construct_utmp*()) to try to make it simpler to add extra systems |
| 102 | that introduce new features to either structure. |
| 103 | |
| 104 | While it may seem terribly wasteful to replicate so much similar |
| 105 | code for each method, experience has shown that maintaining code to |
| 106 | write both struct utmp and utmpx in one function, whilst maintaining |
| 107 | support for all systems whether they have library support or not, is |
| 108 | a difficult and time-consuming task. |
| 109 | |
| 110 | Lastlog support proceeds similarly. Functions login_get_lastlog() |
| 111 | (and its OpenSSH-tuned friend login_get_lastlog_time()) call |
| 112 | getlast_entry(), which tries one of three methods to find the last |
| 113 | login time. It uses local system lastlog support if it can, |
| 114 | otherwise it tries wtmp or wtmpx before giving up and returning 0, |
| 115 | meaning "tilt". |
| 116 | |
| 117 | Maintenance |
| 118 | ----------- |
| 119 | |
| 120 | In many cases it's possible to tweak autoconf to select the correct |
| 121 | methods for a particular platform, either by improving the detection |
| 122 | code (best), or by presetting DISABLE_<method> or CONF_<method>_FILE |
| 123 | symbols for the platform. |
| 124 | |
| 125 | Use logintest to check which symbols are defined before modifying |
| 126 | configure.in and loginrec.c. (You have to build logintest yourself |
| 127 | with 'make logintest' as it's not built by default.) |
| 128 | |
| 129 | Otherwise, patches to the specific method(s) are very helpful! |
| 130 | |
| 131 | */ |
| 132 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 133 | /** |
| 134 | ** TODO: |
Damien Miller | e5192fa | 2000-08-29 14:30:37 +1100 | [diff] [blame] | 135 | ** homegrown ttyslot() |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 136 | ** test, test, test |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 137 | ** |
| 138 | ** Platform status: |
| 139 | ** ---------------- |
| 140 | ** |
| 141 | ** Known good: |
Damien Miller | e5192fa | 2000-08-29 14:30:37 +1100 | [diff] [blame] | 142 | ** Linux (Redhat 6.2, Debian) |
| 143 | ** Solaris |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 144 | ** HP-UX 10.20 (gcc only) |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 145 | ** IRIX |
Ben Lindstrom | dcca981 | 2000-11-10 03:28:31 +0000 | [diff] [blame] | 146 | ** NeXT - M68k/HPPA/Sparc (4.2/3.3) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 147 | ** |
| 148 | ** Testing required: Please send reports! |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 149 | ** NetBSD |
| 150 | ** HP-UX 11 |
andre | 60f3c98 | 2000-06-03 16:18:19 +0000 | [diff] [blame] | 151 | ** AIX |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 152 | ** |
| 153 | ** Platforms with known problems: |
Damien Miller | e5192fa | 2000-08-29 14:30:37 +1100 | [diff] [blame] | 154 | ** Some variants of Slackware Linux |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 155 | ** |
| 156 | **/ |
| 157 | |
| 158 | #include "includes.h" |
| 159 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 160 | #include "ssh.h" |
| 161 | #include "xmalloc.h" |
| 162 | #include "loginrec.h" |
| 163 | |
Ben Lindstrom | 75214f9 | 2000-12-01 21:19:51 +0000 | [diff] [blame] | 164 | RCSID("$Id: loginrec.c,v 1.28 2000/12/01 21:19:51 mouring Exp $"); |
Ben Lindstrom | dcca981 | 2000-11-10 03:28:31 +0000 | [diff] [blame] | 165 | |
| 166 | #ifdef HAVE_UTIL_H |
| 167 | # include <util.h> |
| 168 | #endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 169 | |
| 170 | /** |
| 171 | ** prototypes for helper functions in this file |
| 172 | **/ |
| 173 | |
| 174 | #if HAVE_UTMP_H |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 175 | void set_utmp_time(struct logininfo *li, struct utmp *ut); |
| 176 | void construct_utmp(struct logininfo *li, struct utmp *ut); |
| 177 | #endif |
| 178 | |
| 179 | #ifdef HAVE_UTMPX_H |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 180 | void set_utmpx_time(struct logininfo *li, struct utmpx *ut); |
| 181 | void construct_utmpx(struct logininfo *li, struct utmpx *ut); |
| 182 | #endif |
| 183 | |
| 184 | int utmp_write_entry(struct logininfo *li); |
| 185 | int utmpx_write_entry(struct logininfo *li); |
| 186 | int wtmp_write_entry(struct logininfo *li); |
| 187 | int wtmpx_write_entry(struct logininfo *li); |
| 188 | int lastlog_write_entry(struct logininfo *li); |
| 189 | int syslogin_write_entry(struct logininfo *li); |
| 190 | |
| 191 | int getlast_entry(struct logininfo *li); |
| 192 | int lastlog_get_entry(struct logininfo *li); |
| 193 | int wtmp_get_entry(struct logininfo *li); |
| 194 | int wtmpx_get_entry(struct logininfo *li); |
| 195 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 196 | /* pick the shortest string */ |
| 197 | #define MIN_SIZEOF(s1,s2) ( sizeof(s1) < sizeof(s2) ? sizeof(s1) : sizeof(s2) ) |
| 198 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 199 | /** |
| 200 | ** platform-independent login functions |
| 201 | **/ |
| 202 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 203 | /* login_login(struct logininfo *) -Record a login |
| 204 | * |
| 205 | * Call with a pointer to a struct logininfo initialised with |
| 206 | * login_init_entry() or login_alloc_entry() |
| 207 | * |
| 208 | * Returns: |
| 209 | * >0 if successful |
| 210 | * 0 on failure (will use OpenSSH's logging facilities for diagnostics) |
| 211 | */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 212 | int |
| 213 | login_login (struct logininfo *li) |
| 214 | { |
| 215 | li->type = LTYPE_LOGIN; |
| 216 | return login_write(li); |
| 217 | } |
| 218 | |
| 219 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 220 | /* login_logout(struct logininfo *) - Record a logout |
| 221 | * |
| 222 | * Call as with login_login() |
| 223 | * |
| 224 | * Returns: |
| 225 | * >0 if successful |
| 226 | * 0 on failure (will use OpenSSH's logging facilities for diagnostics) |
| 227 | */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 228 | int |
| 229 | login_logout(struct logininfo *li) |
| 230 | { |
| 231 | li->type = LTYPE_LOGOUT; |
| 232 | return login_write(li); |
| 233 | } |
| 234 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 235 | /* login_get_lastlog_time(int) - Retrieve the last login time |
| 236 | * |
| 237 | * Retrieve the last login time for the given uid. Will try to use the |
| 238 | * system lastlog facilities if they are available, but will fall back |
| 239 | * to looking in wtmp/wtmpx if necessary |
| 240 | * |
| 241 | * Returns: |
| 242 | * 0 on failure, or if user has never logged in |
| 243 | * Time in seconds from the epoch if successful |
| 244 | * |
| 245 | * Useful preprocessor symbols: |
| 246 | * DISABLE_LASTLOG: If set, *never* even try to retrieve lastlog |
| 247 | * info |
| 248 | * USE_LASTLOG: If set, indicates the presence of system lastlog |
| 249 | * facilities. If this and DISABLE_LASTLOG are not set, |
| 250 | * try to retrieve lastlog information from wtmp/wtmpx. |
| 251 | */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 252 | unsigned int |
| 253 | login_get_lastlog_time(const int uid) |
| 254 | { |
| 255 | struct logininfo li; |
| 256 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 257 | if (login_get_lastlog(&li, uid)) |
| 258 | return li.tv_sec; |
| 259 | else |
| 260 | return 0; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 261 | } |
| 262 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 263 | /* login_get_lastlog(struct logininfo *, int) - Retrieve a lastlog entry |
| 264 | * |
| 265 | * Retrieve a logininfo structure populated (only partially) with |
| 266 | * information from the system lastlog data, or from wtmp/wtmpx if no |
| 267 | * system lastlog information exists. |
| 268 | * |
| 269 | * Note this routine must be given a pre-allocated logininfo. |
| 270 | * |
| 271 | * Returns: |
| 272 | * >0: A pointer to your struct logininfo if successful |
| 273 | * 0 on failure (will use OpenSSH's logging facilities for diagnostics) |
| 274 | * |
| 275 | */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 276 | struct logininfo * |
| 277 | login_get_lastlog(struct logininfo *li, const int uid) |
| 278 | { |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 279 | struct passwd *pw; |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 280 | |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 281 | memset(li, '\0', sizeof(*li)); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 282 | li->uid = uid; |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 283 | |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 284 | /* |
| 285 | * If we don't have a 'real' lastlog, we need the username to |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 286 | * reliably search wtmp(x) for the last login (see |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 287 | * wtmp_get_entry().) |
| 288 | */ |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 289 | pw = getpwuid(uid); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 290 | if (pw == NULL) |
| 291 | fatal("login_get_lastlog: Cannot find account for uid %i", uid); |
| 292 | |
andre | 98cabe0 | 2000-06-19 09:11:30 +0000 | [diff] [blame] | 293 | /* No MIN_SIZEOF here - we absolutely *must not* truncate the |
| 294 | * username */ |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 295 | strlcpy(li->username, pw->pw_name, sizeof(li->username)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 296 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 297 | if (getlast_entry(li)) |
| 298 | return li; |
| 299 | else |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 300 | return NULL; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 301 | } |
| 302 | |
| 303 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 304 | /* login_alloc_entry(int, char*, char*, char*) - Allocate and initialise |
| 305 | * a logininfo structure |
| 306 | * |
| 307 | * This function creates a new struct logininfo, a data structure |
| 308 | * meant to carry the information required to portably record login info. |
| 309 | * |
| 310 | * Returns a pointer to a newly created struct logininfo. If memory |
| 311 | * allocation fails, the program halts. |
| 312 | */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 313 | struct |
| 314 | logininfo *login_alloc_entry(int pid, const char *username, |
| 315 | const char *hostname, const char *line) |
| 316 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 317 | struct logininfo *newli; |
| 318 | |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 319 | newli = (struct logininfo *) xmalloc (sizeof(*newli)); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 320 | (void)login_init_entry(newli, pid, username, hostname, line); |
| 321 | return newli; |
| 322 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 323 | |
| 324 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 325 | /* login_free_entry(struct logininfo *) - free struct memory */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 326 | void |
| 327 | login_free_entry(struct logininfo *li) |
| 328 | { |
| 329 | xfree(li); |
| 330 | } |
| 331 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 332 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 333 | /* login_init_entry(struct logininfo *, int, char*, char*, char*) |
| 334 | * - initialise a struct logininfo |
| 335 | * |
| 336 | * Populates a new struct logininfo, a data structure meant to carry |
| 337 | * the information required to portably record login info. |
| 338 | * |
| 339 | * Returns: 1 |
| 340 | */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 341 | int |
| 342 | login_init_entry(struct logininfo *li, int pid, const char *username, |
| 343 | const char *hostname, const char *line) |
| 344 | { |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 345 | struct passwd *pw; |
| 346 | |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 347 | memset(li, 0, sizeof(*li)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 348 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 349 | li->pid = pid; |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 350 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 351 | /* set the line information */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 352 | if (line) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 353 | line_fullname(li->line, line, sizeof(li->line)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 354 | |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 355 | if (username) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 356 | strlcpy(li->username, username, sizeof(li->username)); |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 357 | pw = getpwnam(li->username); |
| 358 | if (pw == NULL) |
| 359 | fatal("login_init_entry: Cannot find user \"%s\"", li->username); |
| 360 | li->uid = pw->pw_uid; |
| 361 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 362 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 363 | if (hostname) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 364 | strlcpy(li->hostname, hostname, sizeof(li->hostname)); |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 365 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 366 | return 1; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 367 | } |
| 368 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 369 | /* login_set_current_time(struct logininfo *) - set the current time |
| 370 | * |
| 371 | * Set the current time in a logininfo structure. This function is |
| 372 | * meant to eliminate the need to deal with system dependencies for |
| 373 | * time handling. |
| 374 | */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 375 | void |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 376 | login_set_current_time(struct logininfo *li) |
| 377 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 378 | struct timeval tv; |
| 379 | |
| 380 | gettimeofday(&tv, NULL); |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 381 | |
| 382 | li->tv_sec = tv.tv_sec; |
| 383 | li->tv_usec = tv.tv_usec; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 384 | } |
| 385 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 386 | /* copy a sockaddr_* into our logininfo */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 387 | void |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 388 | login_set_addr(struct logininfo *li, const struct sockaddr *sa, |
| 389 | const unsigned int sa_size) |
| 390 | { |
| 391 | unsigned int bufsize = sa_size; |
| 392 | |
| 393 | /* make sure we don't overrun our union */ |
| 394 | if (sizeof(li->hostaddr) < sa_size) |
| 395 | bufsize = sizeof(li->hostaddr); |
| 396 | |
| 397 | memcpy((void *)&(li->hostaddr.sa), (const void *)sa, bufsize); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 398 | } |
| 399 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 400 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 401 | /** |
| 402 | ** login_write: Call low-level recording functions based on autoconf |
| 403 | ** results |
| 404 | **/ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 405 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 406 | login_write (struct logininfo *li) |
| 407 | { |
Damien Miller | bac2d8a | 2000-09-05 16:13:06 +1100 | [diff] [blame] | 408 | #ifndef HAVE_CYGWIN |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 409 | if ((int)geteuid() != 0) { |
| 410 | log("Attempt to write login records by non-root user (aborting)"); |
| 411 | return 1; |
| 412 | } |
Damien Miller | bac2d8a | 2000-09-05 16:13:06 +1100 | [diff] [blame] | 413 | #endif |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 414 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 415 | /* set the timestamp */ |
| 416 | login_set_current_time(li); |
| 417 | #ifdef USE_LOGIN |
| 418 | syslogin_write_entry(li); |
| 419 | #endif |
| 420 | #ifdef USE_LASTLOG |
| 421 | if (li->type == LTYPE_LOGIN) { |
| 422 | lastlog_write_entry(li); |
| 423 | } |
| 424 | #endif |
| 425 | #ifdef USE_UTMP |
| 426 | utmp_write_entry(li); |
| 427 | #endif |
| 428 | #ifdef USE_WTMP |
| 429 | wtmp_write_entry(li); |
| 430 | #endif |
| 431 | #ifdef USE_UTMPX |
| 432 | utmpx_write_entry(li); |
| 433 | #endif |
| 434 | #ifdef USE_WTMPX |
| 435 | wtmpx_write_entry(li); |
| 436 | #endif |
| 437 | return 0; |
| 438 | } |
| 439 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 440 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 441 | ** getlast_entry: Call low-level functions to retrieve the last login |
| 442 | ** time. |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 443 | **/ |
| 444 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 445 | /* take the uid in li and return the last login time */ |
| 446 | int |
| 447 | getlast_entry(struct logininfo *li) |
| 448 | { |
| 449 | #ifdef USE_LASTLOG |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 450 | return(lastlog_get_entry(li)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 451 | #else /* !USE_LASTLOG */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 452 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 453 | #ifdef DISABLE_LASTLOG |
andre | ecaabf1 | 2000-06-12 22:21:44 +0000 | [diff] [blame] | 454 | /* On some systems we shouldn't even try to obtain last login |
| 455 | * time, e.g. AIX */ |
| 456 | return 0; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 457 | # else /* DISABLE_LASTLOG */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 458 | /* Try to retrieve the last login time from wtmp */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 459 | # 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] | 460 | /* retrieve last login time from utmp */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 461 | return (wtmp_get_entry(li)); |
| 462 | # 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] | 463 | /* If wtmp isn't available, try wtmpx */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 464 | # 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] | 465 | /* retrieve last login time from utmpx */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 466 | return (wtmpx_get_entry(li)); |
| 467 | # else |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 468 | /* Give up: No means of retrieving last login time */ |
| 469 | return 0; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 470 | # endif /* USE_WTMPX && (HAVE_TIME_IN_UTMPX || HAVE_TV_IN_UTMPX) */ |
| 471 | # endif /* USE_WTMP && (HAVE_TIME_IN_UTMP || HAVE_TV_IN_UTMP) */ |
| 472 | # endif /* DISABLE_LASTLOG */ |
| 473 | #endif /* USE_LASTLOG */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 474 | } |
| 475 | |
| 476 | |
| 477 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 478 | /* |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 479 | * 'line' string utility functions |
| 480 | * |
| 481 | * These functions process the 'line' string into one of three forms: |
| 482 | * |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 483 | * 1. The full filename (including '/dev') |
| 484 | * 2. The stripped name (excluding '/dev') |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 485 | * 3. The abbreviated name (e.g. /dev/ttyp00 -> yp00 |
| 486 | * /dev/pts/1 -> ts/1 ) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 487 | * |
| 488 | * Form 3 is used on some systems to identify a .tmp.? entry when |
| 489 | * attempting to remove it. Typically both addition and removal is |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 490 | * performed by one application - say, sshd - so as long as the choice |
| 491 | * uniquely identifies a terminal it's ok. |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 492 | */ |
| 493 | |
| 494 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 495 | /* line_fullname(): add the leading '/dev/' if it doesn't exist make |
| 496 | * sure dst has enough space, if not just copy src (ugh) */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 497 | char * |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 498 | line_fullname(char *dst, const char *src, int dstsize) |
| 499 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 500 | memset(dst, '\0', dstsize); |
Damien Miller | f5a8147 | 2000-09-30 21:34:44 +1100 | [diff] [blame] | 501 | if ((strncmp(src, "/dev/", 5) == 0) || (dstsize < (strlen(src) + 5))) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 502 | strlcpy(dst, src, dstsize); |
Damien Miller | f5a8147 | 2000-09-30 21:34:44 +1100 | [diff] [blame] | 503 | } else { |
Damien Miller | 1a13225 | 2000-06-13 21:23:17 +1000 | [diff] [blame] | 504 | strlcpy(dst, "/dev/", dstsize); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 505 | strlcat(dst, src, dstsize); |
| 506 | } |
| 507 | return dst; |
| 508 | } |
| 509 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 510 | /* line_stripname(): strip the leading '/dev' if it exists, return dst */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 511 | char * |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 512 | line_stripname(char *dst, const char *src, int dstsize) |
| 513 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 514 | memset(dst, '\0', dstsize); |
| 515 | if (strncmp(src, "/dev/", 5) == 0) |
Damien Miller | f5a8147 | 2000-09-30 21:34:44 +1100 | [diff] [blame] | 516 | strlcpy(dst, src + 5, dstsize); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 517 | else |
| 518 | strlcpy(dst, src, dstsize); |
| 519 | return dst; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 520 | } |
| 521 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 522 | /* line_abbrevname(): Return the abbreviated (usually four-character) |
| 523 | * form of the line (Just use the last <dstsize> characters of the |
| 524 | * full name.) |
| 525 | * |
| 526 | * NOTE: use strncpy because we do NOT necessarily want zero |
| 527 | * termination */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 528 | char * |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 529 | line_abbrevname(char *dst, const char *src, int dstsize) |
| 530 | { |
| 531 | size_t len; |
| 532 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 533 | memset(dst, '\0', dstsize); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 534 | |
Damien Miller | 8e81ed3 | 2000-07-01 13:17:42 +1000 | [diff] [blame] | 535 | /* Always skip prefix if present */ |
Damien Miller | f5a8147 | 2000-09-30 21:34:44 +1100 | [diff] [blame] | 536 | #ifdef sgi |
| 537 | if (strncmp(src, "/dev/tty", 8) == 0) |
| 538 | src += 8; |
| 539 | #else |
Damien Miller | 8e81ed3 | 2000-07-01 13:17:42 +1000 | [diff] [blame] | 540 | if (strncmp(src, "/dev/", 5) == 0) |
| 541 | src += 5; |
Damien Miller | f5a8147 | 2000-09-30 21:34:44 +1100 | [diff] [blame] | 542 | #endif |
Damien Miller | 8e81ed3 | 2000-07-01 13:17:42 +1000 | [diff] [blame] | 543 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 544 | len = strlen(src); |
| 545 | |
Damien Miller | 8e81ed3 | 2000-07-01 13:17:42 +1000 | [diff] [blame] | 546 | if (len > 0) { |
| 547 | if (((int)len - dstsize) > 0) |
| 548 | src += ((int)len - dstsize); |
| 549 | |
| 550 | /* note: _don't_ change this to strlcpy */ |
| 551 | strncpy(dst, src, (size_t)dstsize); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 552 | } |
| 553 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 554 | return dst; |
| 555 | } |
| 556 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 557 | /** |
| 558 | ** utmp utility functions |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 559 | ** |
| 560 | ** These functions manipulate struct utmp, taking system differences |
| 561 | ** into account. |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 562 | **/ |
| 563 | |
| 564 | #if defined(USE_UTMP) || defined (USE_WTMP) || defined (USE_LOGIN) |
| 565 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 566 | /* build the utmp structure */ |
| 567 | void |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 568 | set_utmp_time(struct logininfo *li, struct utmp *ut) |
| 569 | { |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 570 | # ifdef HAVE_TV_IN_UTMP |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 571 | ut->ut_tv.tv_sec = li->tv_sec; |
| 572 | ut->ut_tv.tv_usec = li->tv_usec; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 573 | # else |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 574 | # ifdef HAVE_TIME_IN_UTMP |
| 575 | ut->ut_time = li->tv_sec; |
| 576 | # endif |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 577 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 578 | } |
| 579 | |
| 580 | void |
| 581 | construct_utmp(struct logininfo *li, |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 582 | struct utmp *ut) |
| 583 | { |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 584 | memset(ut, '\0', sizeof(*ut)); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 585 | |
| 586 | /* First fill out fields used for both logins and logouts */ |
| 587 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 588 | # ifdef HAVE_ID_IN_UTMP |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 589 | line_abbrevname(ut->ut_id, li->line, sizeof(ut->ut_id)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 590 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 591 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 592 | # ifdef HAVE_TYPE_IN_UTMP |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 593 | /* This is done here to keep utmp constants out of struct logininfo */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 594 | switch (li->type) { |
| 595 | case LTYPE_LOGIN: |
| 596 | ut->ut_type = USER_PROCESS; |
| 597 | break; |
| 598 | case LTYPE_LOGOUT: |
| 599 | ut->ut_type = DEAD_PROCESS; |
| 600 | break; |
| 601 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 602 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 603 | set_utmp_time(li, ut); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 604 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 605 | line_stripname(ut->ut_line, li->line, sizeof(ut->ut_line)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 606 | |
| 607 | # ifdef HAVE_PID_IN_UTMP |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 608 | ut->ut_pid = li->pid; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 609 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 610 | |
| 611 | /* If we're logging out, leave all other fields blank */ |
| 612 | if (li->type == LTYPE_LOGOUT) |
| 613 | return; |
| 614 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 615 | /* |
| 616 | * These fields are only used when logging in, and are blank |
| 617 | * for logouts. |
| 618 | */ |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 619 | |
| 620 | /* Use strncpy because we don't necessarily want null termination */ |
Damien Miller | 7a0e5dc | 2000-07-11 12:15:54 +1000 | [diff] [blame] | 621 | 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] | 622 | # ifdef HAVE_HOST_IN_UTMP |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 623 | 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] | 624 | # endif |
| 625 | # ifdef HAVE_ADDR_IN_UTMP |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 626 | /* this is just a 32-bit IP address */ |
| 627 | if (li->hostaddr.sa.sa_family == AF_INET) |
| 628 | ut->ut_addr = li->hostaddr.sa_in.sin_addr.s_addr; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 629 | # endif |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 630 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 631 | #endif /* USE_UTMP || USE_WTMP || USE_LOGIN */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 632 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 633 | /** |
| 634 | ** utmpx utility functions |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 635 | ** |
| 636 | ** These functions manipulate struct utmpx, accounting for system |
| 637 | ** variations. |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 638 | **/ |
| 639 | |
| 640 | #if defined(USE_UTMPX) || defined (USE_WTMPX) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 641 | /* build the utmpx structure */ |
| 642 | void |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 643 | set_utmpx_time(struct logininfo *li, struct utmpx *utx) |
| 644 | { |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 645 | # ifdef HAVE_TV_IN_UTMPX |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 646 | utx->ut_tv.tv_sec = li->tv_sec; |
| 647 | utx->ut_tv.tv_usec = li->tv_usec; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 648 | # else /* HAVE_TV_IN_UTMPX */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 649 | # ifdef HAVE_TIME_IN_UTMPX |
| 650 | utx->ut_time = li->tv_sec; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 651 | # endif /* HAVE_TIME_IN_UTMPX */ |
| 652 | # endif /* HAVE_TV_IN_UTMPX */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 653 | } |
| 654 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 655 | void |
| 656 | construct_utmpx(struct logininfo *li, struct utmpx *utx) |
| 657 | { |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 658 | memset(utx, '\0', sizeof(*utx)); |
Damien Miller | 8e81ed3 | 2000-07-01 13:17:42 +1000 | [diff] [blame] | 659 | # ifdef HAVE_ID_IN_UTMPX |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 660 | line_abbrevname(utx->ut_id, li->line, sizeof(utx->ut_id)); |
Damien Miller | 8e81ed3 | 2000-07-01 13:17:42 +1000 | [diff] [blame] | 661 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 662 | |
| 663 | /* this is done here to keep utmp constants out of loginrec.h */ |
| 664 | switch (li->type) { |
| 665 | case LTYPE_LOGIN: |
| 666 | utx->ut_type = USER_PROCESS; |
| 667 | break; |
| 668 | case LTYPE_LOGOUT: |
| 669 | utx->ut_type = DEAD_PROCESS; |
| 670 | break; |
| 671 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 672 | line_stripname(utx->ut_line, li->line, sizeof(utx->ut_line)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 673 | set_utmpx_time(li, utx); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 674 | utx->ut_pid = li->pid; |
| 675 | |
| 676 | if (li->type == LTYPE_LOGOUT) |
| 677 | return; |
| 678 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 679 | /* |
| 680 | * These fields are only used when logging in, and are blank |
| 681 | * for logouts. |
| 682 | */ |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 683 | |
| 684 | /* strncpy(): Don't necessarily want null termination */ |
Damien Miller | 7a0e5dc | 2000-07-11 12:15:54 +1000 | [diff] [blame] | 685 | strncpy(utx->ut_name, li->username, MIN_SIZEOF(utx->ut_name, li->username)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 686 | # ifdef HAVE_HOST_IN_UTMPX |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 687 | 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] | 688 | # endif |
| 689 | # ifdef HAVE_ADDR_IN_UTMPX |
Damien Miller | d6f204d | 2000-09-23 13:57:27 +1100 | [diff] [blame] | 690 | /* this is just a 32-bit IP address */ |
| 691 | if (li->hostaddr.sa.sa_family == AF_INET) |
| 692 | utx->ut_addr = li->hostaddr.sa_in.sin_addr.s_addr; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 693 | # endif |
| 694 | # ifdef HAVE_SYSLEN_IN_UTMPX |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 695 | /* ut_syslen is the length of the utx_host string */ |
| 696 | utx->ut_syslen = MIN(strlen(li->hostname), sizeof(utx->ut_host)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 697 | # endif |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 698 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 699 | #endif /* USE_UTMPX || USE_WTMPX */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 700 | |
| 701 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 702 | ** Low-level utmp functions |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 703 | **/ |
| 704 | |
| 705 | /* FIXME: (ATL) utmp_write_direct needs testing */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 706 | #ifdef USE_UTMP |
| 707 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 708 | /* if we can, use pututline() etc. */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 709 | # if !defined(DISABLE_PUTUTLINE) && defined(HAVE_SETUTENT) && \ |
| 710 | defined(HAVE_PUTUTLINE) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 711 | # define UTMP_USE_LIBRARY |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 712 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 713 | |
| 714 | |
| 715 | /* write a utmp entry with the system's help (pututline() and pals) */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 716 | # ifdef UTMP_USE_LIBRARY |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 717 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 718 | utmp_write_library(struct logininfo *li, struct utmp *ut) |
| 719 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 720 | setutent(); |
| 721 | pututline(ut); |
| 722 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 723 | # ifdef HAVE_ENDUTENT |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 724 | endutent(); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 725 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 726 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 727 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 728 | # else /* UTMP_USE_LIBRARY */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 729 | |
| 730 | /* write a utmp entry direct to the file */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 731 | /* This is a slightly modification of code in OpenBSD's login.c */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 732 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 733 | utmp_write_direct(struct logininfo *li, struct utmp *ut) |
| 734 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 735 | struct utmp old_ut; |
| 736 | register int fd; |
| 737 | int tty; |
| 738 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 739 | /* FIXME: (ATL) ttyslot() needs local implementation */ |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 740 | |
Damien Miller | e5192fa | 2000-08-29 14:30:37 +1100 | [diff] [blame] | 741 | #if defined(HAVE_GETTTYENT) |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 742 | register struct ttyent *ty; |
| 743 | |
| 744 | tty=0; |
| 745 | |
| 746 | setttyent(); |
| 747 | while ((struct ttyent *)0 != (ty = getttyent())) { |
| 748 | tty++; |
| 749 | if (!strncmp(ty->ty_name, ut->ut_line, sizeof(ut->ut_line))) |
| 750 | break; |
| 751 | } |
| 752 | endttyent(); |
| 753 | |
| 754 | if((struct ttyent *)0 == ty) { |
| 755 | log("utmp_write_entry: tty not found"); |
| 756 | return(1); |
| 757 | } |
| 758 | #else /* FIXME */ |
| 759 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 760 | tty = ttyslot(); /* seems only to work for /dev/ttyp? style names */ |
| 761 | |
Damien Miller | e5192fa | 2000-08-29 14:30:37 +1100 | [diff] [blame] | 762 | #endif /* HAVE_GETTTYENT */ |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 763 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 764 | if (tty > 0 && (fd = open(UTMP_FILE, O_RDWR|O_CREAT, 0644)) >= 0) { |
| 765 | (void)lseek(fd, (off_t)(tty * sizeof(struct utmp)), SEEK_SET); |
| 766 | /* |
| 767 | * Prevent luser from zero'ing out ut_host. |
| 768 | * 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] | 769 | * and ut_line and ut_name match, preserve the old ut_line. |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 770 | */ |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 771 | if (atomicio(read, fd, &old_ut, sizeof(old_ut)) == sizeof(old_ut) && |
| 772 | (ut->ut_host[0] == '\0') && (old_ut.ut_host[0] != '\0') && |
| 773 | (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] | 774 | (strncmp(old_ut.ut_name, ut->ut_name, sizeof(ut->ut_name)) == 0)) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 775 | (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] | 776 | } |
| 777 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 778 | (void)lseek(fd, (off_t)(tty * sizeof(struct utmp)), SEEK_SET); |
Damien Miller | 36ccb5c | 2000-08-09 16:34:27 +1000 | [diff] [blame] | 779 | if (atomicio(write, fd, ut, sizeof(*ut)) != sizeof(*ut)) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 780 | log("utmp_write_direct: error writing %s: %s", |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 781 | UTMP_FILE, strerror(errno)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 782 | |
| 783 | (void)close(fd); |
| 784 | return 1; |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 785 | } else { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 786 | return 0; |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 787 | } |
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 | # endif /* UTMP_USE_LIBRARY */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 790 | |
| 791 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 792 | utmp_perform_login(struct logininfo *li) |
| 793 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 794 | struct utmp ut; |
| 795 | |
| 796 | construct_utmp(li, &ut); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 797 | # ifdef UTMP_USE_LIBRARY |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 798 | if (!utmp_write_library(li, &ut)) { |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 799 | log("utmp_perform_login: utmp_write_library() failed"); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 800 | return 0; |
| 801 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 802 | # else |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 803 | if (!utmp_write_direct(li, &ut)) { |
| 804 | log("utmp_perform_login: utmp_write_direct() failed"); |
| 805 | return 0; |
| 806 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 807 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 808 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 809 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 810 | |
| 811 | |
| 812 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 813 | utmp_perform_logout(struct logininfo *li) |
| 814 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 815 | struct utmp ut; |
| 816 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 817 | construct_utmp(li, &ut); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 818 | # ifdef UTMP_USE_LIBRARY |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 819 | if (!utmp_write_library(li, &ut)) { |
| 820 | log("utmp_perform_logout: utmp_write_library() failed"); |
| 821 | return 0; |
| 822 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 823 | # else |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 824 | if (!utmp_write_direct(li, &ut)) { |
| 825 | log("utmp_perform_logout: utmp_write_direct() failed"); |
| 826 | return 0; |
| 827 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 828 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 829 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 830 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 831 | |
| 832 | |
| 833 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 834 | utmp_write_entry(struct logininfo *li) |
| 835 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 836 | switch(li->type) { |
| 837 | case LTYPE_LOGIN: |
| 838 | return utmp_perform_login(li); |
| 839 | |
| 840 | case LTYPE_LOGOUT: |
| 841 | return utmp_perform_logout(li); |
| 842 | |
| 843 | default: |
| 844 | log("utmp_write_entry: invalid type field"); |
| 845 | return 0; |
| 846 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 847 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 848 | #endif /* USE_UTMP */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 849 | |
| 850 | |
| 851 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 852 | ** Low-level utmpx functions |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 853 | **/ |
| 854 | |
| 855 | /* not much point if we don't want utmpx entries */ |
| 856 | #ifdef USE_UTMPX |
| 857 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 858 | /* if we have the wherewithall, use pututxline etc. */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 859 | # if !defined(DISABLE_PUTUTXLINE) && defined(HAVE_SETUTXENT) && \ |
| 860 | defined(HAVE_PUTUTXLINE) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 861 | # define UTMPX_USE_LIBRARY |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 862 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 863 | |
| 864 | |
| 865 | /* write a utmpx entry with the system's help (pututxline() and pals) */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 866 | # ifdef UTMPX_USE_LIBRARY |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 867 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 868 | utmpx_write_library(struct logininfo *li, struct utmpx *utx) |
| 869 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 870 | setutxent(); |
| 871 | pututxline(utx); |
| 872 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 873 | # ifdef HAVE_ENDUTXENT |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 874 | endutxent(); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 875 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 876 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 877 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 878 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 879 | # else /* UTMPX_USE_LIBRARY */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 880 | |
| 881 | /* write a utmp entry direct to the file */ |
| 882 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 883 | utmpx_write_direct(struct logininfo *li, struct utmpx *utx) |
| 884 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 885 | log("utmpx_write_direct: not implemented!"); |
| 886 | return 0; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 887 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 888 | # endif /* UTMPX_USE_LIBRARY */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 889 | |
| 890 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 891 | utmpx_perform_login(struct logininfo *li) |
| 892 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 893 | struct utmpx utx; |
| 894 | |
| 895 | construct_utmpx(li, &utx); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 896 | # ifdef UTMPX_USE_LIBRARY |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 897 | if (!utmpx_write_library(li, &utx)) { |
| 898 | log("utmpx_perform_login: utmp_write_library() failed"); |
| 899 | return 0; |
| 900 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 901 | # else |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 902 | if (!utmpx_write_direct(li, &ut)) { |
| 903 | log("utmpx_perform_login: utmp_write_direct() failed"); |
| 904 | return 0; |
| 905 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 906 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 907 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 908 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 909 | |
| 910 | |
| 911 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 912 | utmpx_perform_logout(struct logininfo *li) |
| 913 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 914 | struct utmpx utx; |
| 915 | |
| 916 | memset(&utx, '\0', sizeof(utx)); |
| 917 | set_utmpx_time(li, &utx); |
| 918 | line_stripname(utx.ut_line, li->line, sizeof(utx.ut_line)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 919 | # ifdef HAVE_ID_IN_UTMPX |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 920 | line_abbrevname(utx.ut_id, li->line, sizeof(utx.ut_id)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 921 | # endif |
| 922 | # ifdef HAVE_TYPE_IN_UTMPX |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 923 | utx.ut_type = DEAD_PROCESS; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 924 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 925 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 926 | # ifdef UTMPX_USE_LIBRARY |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 927 | utmpx_write_library(li, &utx); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 928 | # else |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 929 | utmpx_write_direct(li, &utx); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 930 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 931 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 932 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 933 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 934 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 935 | utmpx_write_entry(struct logininfo *li) |
| 936 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 937 | switch(li->type) { |
| 938 | case LTYPE_LOGIN: |
| 939 | return utmpx_perform_login(li); |
| 940 | case LTYPE_LOGOUT: |
| 941 | return utmpx_perform_logout(li); |
| 942 | default: |
| 943 | log("utmpx_write_entry: invalid type field"); |
| 944 | return 0; |
| 945 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 946 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 947 | #endif /* USE_UTMPX */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 948 | |
| 949 | |
| 950 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 951 | ** Low-level wtmp functions |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 952 | **/ |
| 953 | |
| 954 | #ifdef USE_WTMP |
| 955 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 956 | /* write a wtmp entry direct to the end of the file */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 957 | /* This is a slight modification of code in OpenBSD's logwtmp.c */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 958 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 959 | wtmp_write(struct logininfo *li, struct utmp *ut) |
| 960 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 961 | struct stat buf; |
| 962 | int fd, ret = 1; |
| 963 | |
| 964 | if ((fd = open(WTMP_FILE, O_WRONLY|O_APPEND, 0)) < 0) { |
| 965 | log("wtmp_write: problem writing %s: %s", |
| 966 | WTMP_FILE, strerror(errno)); |
| 967 | return 0; |
| 968 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 969 | if (fstat(fd, &buf) == 0) |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 970 | if (atomicio(write, fd, ut, sizeof(*ut)) != sizeof(*ut)) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 971 | ftruncate(fd, buf.st_size); |
| 972 | log("wtmp_write: problem writing %s: %s", |
| 973 | WTMP_FILE, strerror(errno)); |
| 974 | ret = 0; |
| 975 | } |
| 976 | (void)close(fd); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 977 | return ret; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 978 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 979 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 980 | static int |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 981 | wtmp_perform_login(struct logininfo *li) |
| 982 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 983 | struct utmp ut; |
| 984 | |
| 985 | construct_utmp(li, &ut); |
| 986 | return wtmp_write(li, &ut); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 987 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 988 | |
| 989 | |
| 990 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 991 | wtmp_perform_logout(struct logininfo *li) |
| 992 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 993 | struct utmp ut; |
| 994 | |
| 995 | construct_utmp(li, &ut); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 996 | return wtmp_write(li, &ut); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 997 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 998 | |
| 999 | |
| 1000 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1001 | wtmp_write_entry(struct logininfo *li) |
| 1002 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1003 | switch(li->type) { |
| 1004 | case LTYPE_LOGIN: |
| 1005 | return wtmp_perform_login(li); |
| 1006 | case LTYPE_LOGOUT: |
| 1007 | return wtmp_perform_logout(li); |
| 1008 | default: |
| 1009 | log("wtmp_write_entry: invalid type field"); |
| 1010 | return 0; |
| 1011 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1012 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1013 | |
| 1014 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1015 | /* Notes on fetching login data from wtmp/wtmpx |
| 1016 | * |
| 1017 | * Logouts are usually recorded with (amongst other things) a blank |
| 1018 | * username on a given tty line. However, some systems (HP-UX is one) |
| 1019 | * leave all fields set, but change the ut_type field to DEAD_PROCESS. |
| 1020 | * |
| 1021 | * Since we're only looking for logins here, we know that the username |
| 1022 | * must be set correctly. On systems that leave it in, we check for |
| 1023 | * ut_type==USER_PROCESS (indicating a login.) |
| 1024 | * |
| 1025 | * Portability: Some systems may set something other than USER_PROCESS |
| 1026 | * to indicate a login process. I don't know of any as I write. Also, |
| 1027 | * it's possible that some systems may both leave the username in |
| 1028 | * place and not have ut_type. |
| 1029 | */ |
| 1030 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1031 | /* return true if this wtmp entry indicates a login */ |
| 1032 | static int |
| 1033 | wtmp_islogin(struct logininfo *li, struct utmp *ut) |
| 1034 | { |
Damien Miller | 7a0e5dc | 2000-07-11 12:15:54 +1000 | [diff] [blame] | 1035 | if (strncmp(li->username, ut->ut_name, |
| 1036 | MIN_SIZEOF(li->username, ut->ut_name)) == 0) { |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1037 | # ifdef HAVE_TYPE_IN_UTMP |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1038 | if (ut->ut_type & USER_PROCESS) |
| 1039 | return 1; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1040 | # else |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1041 | return 1; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1042 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1043 | } |
| 1044 | return 0; |
| 1045 | } |
| 1046 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1047 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1048 | wtmp_get_entry(struct logininfo *li) |
| 1049 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1050 | struct stat st; |
| 1051 | struct utmp ut; |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1052 | int fd, found=0; |
| 1053 | |
| 1054 | /* Clear the time entries in our logininfo */ |
| 1055 | li->tv_sec = li->tv_usec = 0; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1056 | |
| 1057 | if ((fd = open(WTMP_FILE, O_RDONLY)) < 0) { |
| 1058 | log("wtmp_get_entry: problem opening %s: %s", |
| 1059 | WTMP_FILE, strerror(errno)); |
| 1060 | return 0; |
| 1061 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1062 | if (fstat(fd, &st) != 0) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1063 | log("wtmp_get_entry: couldn't stat %s: %s", |
| 1064 | WTMP_FILE, strerror(errno)); |
| 1065 | close(fd); |
| 1066 | return 0; |
| 1067 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1068 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1069 | /* Seek to the start of the last struct utmp */ |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 1070 | if (lseek(fd, (off_t)(0 - sizeof(struct utmp)), SEEK_END) == -1) { |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1071 | /* Looks like we've got a fresh wtmp file */ |
| 1072 | close(fd); |
| 1073 | return 0; |
| 1074 | } |
| 1075 | |
| 1076 | while (!found) { |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 1077 | if (atomicio(read, fd, &ut, sizeof(ut)) != sizeof(ut)) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1078 | log("wtmp_get_entry: read of %s failed: %s", |
| 1079 | WTMP_FILE, strerror(errno)); |
| 1080 | close (fd); |
| 1081 | return 0; |
| 1082 | } |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1083 | if ( wtmp_islogin(li, &ut) ) { |
| 1084 | found = 1; |
| 1085 | /* We've already checked for a time in struct |
| 1086 | * utmp, in login_getlast(). */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1087 | # ifdef HAVE_TIME_IN_UTMP |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1088 | li->tv_sec = ut.ut_time; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1089 | # else |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1090 | # if HAVE_TV_IN_UTMP |
| 1091 | li->tv_sec = ut.ut_tv.tv_sec; |
| 1092 | # endif |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1093 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1094 | line_fullname(li->line, ut.ut_line, |
| 1095 | MIN_SIZEOF(li->line, ut.ut_line)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1096 | # ifdef HAVE_HOST_IN_UTMP |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1097 | strlcpy(li->hostname, ut.ut_host, |
| 1098 | MIN_SIZEOF(li->hostname, ut.ut_host)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1099 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1100 | continue; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1101 | } |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1102 | /* Seek back 2 x struct utmp */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1103 | if (lseek(fd, (off_t)(0-2*sizeof(struct utmp)), SEEK_CUR) == -1) { |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1104 | /* We've found the start of the file, so quit */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1105 | close (fd); |
| 1106 | return 0; |
| 1107 | } |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1108 | } |
| 1109 | |
| 1110 | /* We found an entry. Tidy up and return */ |
| 1111 | close(fd); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1112 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1113 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1114 | # endif /* USE_WTMP */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1115 | |
| 1116 | |
| 1117 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1118 | ** Low-level wtmpx functions |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1119 | **/ |
| 1120 | |
| 1121 | #ifdef USE_WTMPX |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1122 | /* write a wtmpx entry direct to the end of the file */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1123 | /* This is a slight modification of code in OpenBSD's logwtmp.c */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1124 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1125 | wtmpx_write(struct logininfo *li, struct utmpx *utx) |
| 1126 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1127 | struct stat buf; |
| 1128 | int fd, ret = 1; |
| 1129 | |
| 1130 | if ((fd = open(WTMPX_FILE, O_WRONLY|O_APPEND, 0)) < 0) { |
| 1131 | log("wtmpx_write: problem opening %s: %s", |
| 1132 | WTMPX_FILE, strerror(errno)); |
| 1133 | return 0; |
| 1134 | } |
| 1135 | |
| 1136 | if (fstat(fd, &buf) == 0) |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 1137 | if (atomicio(write, fd, utx, sizeof(*utx)) != sizeof(*utx)) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1138 | ftruncate(fd, buf.st_size); |
| 1139 | log("wtmpx_write: problem writing %s: %s", |
| 1140 | WTMPX_FILE, strerror(errno)); |
| 1141 | ret = 0; |
| 1142 | } |
| 1143 | (void)close(fd); |
| 1144 | |
| 1145 | return ret; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1146 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1147 | |
| 1148 | |
| 1149 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1150 | wtmpx_perform_login(struct logininfo *li) |
| 1151 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1152 | struct utmpx utx; |
| 1153 | |
| 1154 | construct_utmpx(li, &utx); |
| 1155 | return wtmpx_write(li, &utx); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1156 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1157 | |
| 1158 | |
| 1159 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1160 | wtmpx_perform_logout(struct logininfo *li) |
| 1161 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1162 | struct utmpx utx; |
| 1163 | |
| 1164 | construct_utmpx(li, &utx); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1165 | return wtmpx_write(li, &utx); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1166 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1167 | |
| 1168 | |
| 1169 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1170 | wtmpx_write_entry(struct logininfo *li) |
| 1171 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1172 | switch(li->type) { |
| 1173 | case LTYPE_LOGIN: |
| 1174 | return wtmpx_perform_login(li); |
| 1175 | case LTYPE_LOGOUT: |
| 1176 | return wtmpx_perform_logout(li); |
| 1177 | default: |
| 1178 | log("wtmpx_write_entry: invalid type field"); |
| 1179 | return 0; |
| 1180 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1181 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1182 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1183 | /* Please see the notes above wtmp_islogin() for information about the |
| 1184 | next two functions */ |
| 1185 | |
| 1186 | /* Return true if this wtmpx entry indicates a login */ |
| 1187 | static int |
| 1188 | wtmpx_islogin(struct logininfo *li, struct utmpx *utx) |
| 1189 | { |
Damien Miller | 7a0e5dc | 2000-07-11 12:15:54 +1000 | [diff] [blame] | 1190 | if ( strncmp(li->username, utx->ut_name, |
| 1191 | MIN_SIZEOF(li->username, utx->ut_name)) == 0 ) { |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1192 | # ifdef HAVE_TYPE_IN_UTMPX |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1193 | if (utx->ut_type == USER_PROCESS) |
| 1194 | return 1; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1195 | # else |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1196 | return 1; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1197 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1198 | } |
| 1199 | return 0; |
| 1200 | } |
| 1201 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1202 | |
| 1203 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1204 | wtmpx_get_entry(struct logininfo *li) |
| 1205 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1206 | struct stat st; |
| 1207 | struct utmpx utx; |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1208 | int fd, found=0; |
| 1209 | |
| 1210 | /* Clear the time entries */ |
| 1211 | li->tv_sec = li->tv_usec = 0; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1212 | |
| 1213 | if ((fd = open(WTMPX_FILE, O_RDONLY)) < 0) { |
| 1214 | log("wtmpx_get_entry: problem opening %s: %s", |
| 1215 | WTMPX_FILE, strerror(errno)); |
| 1216 | return 0; |
| 1217 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1218 | if (fstat(fd, &st) != 0) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1219 | log("wtmpx_get_entry: couldn't stat %s: %s", |
| 1220 | WTMP_FILE, strerror(errno)); |
| 1221 | close(fd); |
| 1222 | return 0; |
| 1223 | } |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1224 | |
| 1225 | /* Seek to the start of the last struct utmpx */ |
| 1226 | if (lseek(fd, (off_t)(0-sizeof(struct utmpx)), SEEK_END) == -1 ) { |
| 1227 | /* probably a newly rotated wtmpx file */ |
| 1228 | close(fd); |
| 1229 | return 0; |
| 1230 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1231 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1232 | while (!found) { |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 1233 | if (atomicio(read, fd, &utx, sizeof(utx)) != sizeof(utx)) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1234 | log("wtmpx_get_entry: read of %s failed: %s", |
| 1235 | WTMPX_FILE, strerror(errno)); |
| 1236 | close (fd); |
| 1237 | return 0; |
| 1238 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1239 | /* Logouts are recorded as a blank username on a particular line. |
| 1240 | * So, we just need to find the username in struct utmpx */ |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1241 | if ( wtmpx_islogin(li, &utx) ) { |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1242 | # ifdef HAVE_TV_IN_UTMPX |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1243 | li->tv_sec = utx.ut_tv.tv_sec; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1244 | # else |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1245 | # ifdef HAVE_TIME_IN_UTMPX |
| 1246 | li->tv_sec = utx.ut_time; |
| 1247 | # endif |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1248 | # endif |
Damien Miller | 1a13225 | 2000-06-13 21:23:17 +1000 | [diff] [blame] | 1249 | line_fullname(li->line, utx.ut_line, sizeof(li->line)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1250 | # ifdef HAVE_HOST_IN_UTMPX |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1251 | strlcpy(li->hostname, utx.ut_host, |
| 1252 | MIN_SIZEOF(li->hostname, utx.ut_host)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1253 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1254 | continue; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1255 | } |
| 1256 | if (lseek(fd, (off_t)(0-2*sizeof(struct utmpx)), SEEK_CUR) == -1) { |
| 1257 | close (fd); |
| 1258 | return 0; |
| 1259 | } |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1260 | } |
| 1261 | |
| 1262 | close(fd); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1263 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1264 | } |
Damien Miller | d5bf307 | 2000-06-07 21:32:13 +1000 | [diff] [blame] | 1265 | #endif /* USE_WTMPX */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1266 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1267 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1268 | ** Low-level libutil login() functions |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1269 | **/ |
| 1270 | |
| 1271 | #ifdef USE_LOGIN |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1272 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1273 | syslogin_perform_login(struct logininfo *li) |
| 1274 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1275 | struct utmp *ut; |
| 1276 | |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 1277 | if (! (ut = (struct utmp *)malloc(sizeof(*ut)))) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1278 | log("syslogin_perform_login: couldn't malloc()"); |
| 1279 | return 0; |
| 1280 | } |
| 1281 | construct_utmp(li, ut); |
| 1282 | login(ut); |
| 1283 | |
| 1284 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1285 | } |
| 1286 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1287 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1288 | syslogin_perform_logout(struct logininfo *li) |
| 1289 | { |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1290 | # ifdef HAVE_LOGOUT |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1291 | char line[8]; |
| 1292 | |
| 1293 | (void)line_stripname(line, li->line, sizeof(line)); |
| 1294 | |
| 1295 | if (!logout(line)) { |
| 1296 | log("syslogin_perform_logout: logout() returned an error"); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1297 | # ifdef HAVE_LOGWTMP |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1298 | } else { |
| 1299 | logwtmp(line, "", ""); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1300 | # endif |
Damien Miller | 9b6d4ab | 2000-07-02 08:43:18 +1000 | [diff] [blame] | 1301 | } |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1302 | /* FIXME: (ATL - if the need arises) What to do if we have |
| 1303 | * login, but no logout? what if logout but no logwtmp? All |
| 1304 | * routines are in libutil so they should all be there, |
| 1305 | * but... */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1306 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1307 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1308 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1309 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1310 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1311 | syslogin_write_entry(struct logininfo *li) |
| 1312 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1313 | switch (li->type) { |
| 1314 | case LTYPE_LOGIN: |
| 1315 | return syslogin_perform_login(li); |
| 1316 | case LTYPE_LOGOUT: |
| 1317 | return syslogin_perform_logout(li); |
| 1318 | default: |
| 1319 | log("syslogin_write_entry: Invalid type field"); |
| 1320 | return 0; |
| 1321 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1322 | } |
Damien Miller | d5bf307 | 2000-06-07 21:32:13 +1000 | [diff] [blame] | 1323 | #endif /* USE_LOGIN */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1324 | |
| 1325 | /* end of file log-syslogin.c */ |
| 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 lastlog functions |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1329 | **/ |
| 1330 | |
| 1331 | #ifdef USE_LASTLOG |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1332 | #define LL_FILE 1 |
| 1333 | #define LL_DIR 2 |
| 1334 | #define LL_OTHER 3 |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1335 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1336 | static void |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1337 | lastlog_construct(struct logininfo *li, struct lastlog *last) |
| 1338 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1339 | /* clear the structure */ |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 1340 | memset(last, '\0', sizeof(*last)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1341 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1342 | (void)line_stripname(last->ll_line, li->line, sizeof(last->ll_line)); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1343 | strlcpy(last->ll_host, li->hostname, |
| 1344 | MIN_SIZEOF(last->ll_host, li->hostname)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1345 | last->ll_time = li->tv_sec; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1346 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 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 | lastlog_filetype(char *filename) |
| 1350 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1351 | struct stat st; |
| 1352 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1353 | if (stat(LASTLOG_FILE, &st) != 0) { |
| 1354 | log("lastlog_perform_login: Couldn't stat %s: %s", LASTLOG_FILE, |
| 1355 | strerror(errno)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1356 | return 0; |
| 1357 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1358 | if (S_ISDIR(st.st_mode)) |
| 1359 | return LL_DIR; |
| 1360 | else if (S_ISREG(st.st_mode)) |
| 1361 | return LL_FILE; |
| 1362 | else |
| 1363 | return LL_OTHER; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1364 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1365 | |
| 1366 | |
| 1367 | /* open the file (using filemode) and seek to the login entry */ |
| 1368 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1369 | lastlog_openseek(struct logininfo *li, int *fd, int filemode) |
| 1370 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1371 | off_t offset; |
| 1372 | int type; |
| 1373 | char lastlog_file[1024]; |
| 1374 | |
| 1375 | type = lastlog_filetype(LASTLOG_FILE); |
| 1376 | switch (type) { |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 1377 | case LL_FILE: |
| 1378 | strlcpy(lastlog_file, LASTLOG_FILE, sizeof(lastlog_file)); |
| 1379 | break; |
| 1380 | case LL_DIR: |
| 1381 | snprintf(lastlog_file, sizeof(lastlog_file), "%s/%s", |
| 1382 | LASTLOG_FILE, li->username); |
| 1383 | break; |
| 1384 | default: |
| 1385 | log("lastlog_openseek: %.100s is not a file or directory!", |
| 1386 | LASTLOG_FILE); |
| 1387 | return 0; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1388 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1389 | |
| 1390 | *fd = open(lastlog_file, filemode); |
| 1391 | if ( *fd < 0) { |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 1392 | debug("lastlog_openseek: Couldn't open %s: %s", |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1393 | lastlog_file, strerror(errno)); |
| 1394 | return 0; |
| 1395 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1396 | |
Damien Miller | e477ef6 | 2000-08-15 10:21:17 +1000 | [diff] [blame] | 1397 | if (type == LL_FILE) { |
| 1398 | /* find this uid's offset in the lastlog file */ |
| 1399 | offset = (off_t) ( (long)li->uid * sizeof(struct lastlog)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1400 | |
Damien Miller | e477ef6 | 2000-08-15 10:21:17 +1000 | [diff] [blame] | 1401 | if ( lseek(*fd, offset, SEEK_SET) != offset ) { |
| 1402 | log("lastlog_openseek: %s->lseek(): %s", |
| 1403 | lastlog_file, strerror(errno)); |
| 1404 | return 0; |
| 1405 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1406 | } |
Damien Miller | e477ef6 | 2000-08-15 10:21:17 +1000 | [diff] [blame] | 1407 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1408 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1409 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1410 | |
| 1411 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1412 | lastlog_perform_login(struct logininfo *li) |
| 1413 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1414 | struct lastlog last; |
| 1415 | int fd; |
| 1416 | |
| 1417 | /* create our struct lastlog */ |
| 1418 | lastlog_construct(li, &last); |
| 1419 | |
Damien Miller | c1132e7 | 2000-08-18 14:08:38 +1000 | [diff] [blame] | 1420 | if (!lastlog_openseek(li, &fd, O_RDWR|O_CREAT)) |
| 1421 | return(0); |
| 1422 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1423 | /* write the entry */ |
Damien Miller | c1132e7 | 2000-08-18 14:08:38 +1000 | [diff] [blame] | 1424 | if (atomicio(write, fd, &last, sizeof(last)) != sizeof(last)) { |
| 1425 | close(fd); |
| 1426 | log("lastlog_write_filemode: Error writing to %s: %s", |
| 1427 | LASTLOG_FILE, strerror(errno)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1428 | return 0; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1429 | } |
Damien Miller | c1132e7 | 2000-08-18 14:08:38 +1000 | [diff] [blame] | 1430 | |
| 1431 | close(fd); |
| 1432 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1433 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1434 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1435 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1436 | lastlog_write_entry(struct logininfo *li) |
| 1437 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1438 | switch(li->type) { |
| 1439 | case LTYPE_LOGIN: |
| 1440 | return lastlog_perform_login(li); |
| 1441 | default: |
| 1442 | log("lastlog_write_entry: Invalid type field"); |
| 1443 | return 0; |
| 1444 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1445 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1446 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1447 | static void |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1448 | lastlog_populate_entry(struct logininfo *li, struct lastlog *last) |
| 1449 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1450 | line_fullname(li->line, last->ll_line, sizeof(li->line)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1451 | strlcpy(li->hostname, last->ll_host, |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1452 | MIN_SIZEOF(li->hostname, last->ll_host)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1453 | li->tv_sec = last->ll_time; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1454 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1455 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1456 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1457 | lastlog_get_entry(struct logininfo *li) |
| 1458 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1459 | struct lastlog last; |
| 1460 | int fd; |
| 1461 | |
| 1462 | if (lastlog_openseek(li, &fd, O_RDONLY)) { |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 1463 | if (atomicio(read, fd, &last, sizeof(last)) != sizeof(last)) { |
| 1464 | log("lastlog_get_entry: Error reading from %s: %s", |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1465 | LASTLOG_FILE, strerror(errno)); |
| 1466 | return 0; |
| 1467 | } else { |
| 1468 | lastlog_populate_entry(li, &last); |
| 1469 | return 1; |
| 1470 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1471 | } else { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1472 | return 0; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1473 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1474 | } |
Damien Miller | d5bf307 | 2000-06-07 21:32:13 +1000 | [diff] [blame] | 1475 | #endif /* USE_LASTLOG */ |