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: |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 135 | ** homegrown ttyslot()q |
| 136 | ** test, test, test |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 137 | ** |
| 138 | ** Platform status: |
| 139 | ** ---------------- |
| 140 | ** |
| 141 | ** Known good: |
| 142 | ** Linux (Redhat 6.2, need more variants) |
| 143 | ** HP-UX 10.20 (gcc only) |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 144 | ** IRIX |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 145 | ** |
| 146 | ** Testing required: Please send reports! |
| 147 | ** Solaris |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 148 | ** NetBSD |
| 149 | ** HP-UX 11 |
andre | 60f3c98 | 2000-06-03 16:18:19 +0000 | [diff] [blame] | 150 | ** AIX |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 151 | ** |
| 152 | ** Platforms with known problems: |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 153 | ** NeXT |
| 154 | ** |
| 155 | **/ |
| 156 | |
| 157 | #include "includes.h" |
| 158 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 159 | #if HAVE_UTMP_H |
| 160 | # include <utmp.h> |
| 161 | #endif |
| 162 | #if HAVE_UTMPX_H |
| 163 | # include <utmpx.h> |
| 164 | #endif |
| 165 | #if HAVE_LASTLOG_H |
| 166 | # include <lastlog.h> |
| 167 | #endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 168 | |
| 169 | #include "ssh.h" |
| 170 | #include "xmalloc.h" |
| 171 | #include "loginrec.h" |
| 172 | |
Damien Miller | 9b6d4ab | 2000-07-02 08:43:18 +1000 | [diff] [blame^] | 173 | RCSID("$Id: loginrec.c,v 1.14 2000/07/01 22:43:18 djm Exp $"); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 174 | |
| 175 | /** |
| 176 | ** prototypes for helper functions in this file |
| 177 | **/ |
| 178 | |
| 179 | #if HAVE_UTMP_H |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 180 | void set_utmp_time(struct logininfo *li, struct utmp *ut); |
| 181 | void construct_utmp(struct logininfo *li, struct utmp *ut); |
| 182 | #endif |
| 183 | |
| 184 | #ifdef HAVE_UTMPX_H |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 185 | void set_utmpx_time(struct logininfo *li, struct utmpx *ut); |
| 186 | void construct_utmpx(struct logininfo *li, struct utmpx *ut); |
| 187 | #endif |
| 188 | |
| 189 | int utmp_write_entry(struct logininfo *li); |
| 190 | int utmpx_write_entry(struct logininfo *li); |
| 191 | int wtmp_write_entry(struct logininfo *li); |
| 192 | int wtmpx_write_entry(struct logininfo *li); |
| 193 | int lastlog_write_entry(struct logininfo *li); |
| 194 | int syslogin_write_entry(struct logininfo *li); |
| 195 | |
| 196 | int getlast_entry(struct logininfo *li); |
| 197 | int lastlog_get_entry(struct logininfo *li); |
| 198 | int wtmp_get_entry(struct logininfo *li); |
| 199 | int wtmpx_get_entry(struct logininfo *li); |
| 200 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 201 | /* pick the shortest string */ |
| 202 | #define MIN_SIZEOF(s1,s2) ( sizeof(s1) < sizeof(s2) ? sizeof(s1) : sizeof(s2) ) |
| 203 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 204 | /** |
| 205 | ** platform-independent login functions |
| 206 | **/ |
| 207 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 208 | /* login_login(struct logininfo *) -Record a login |
| 209 | * |
| 210 | * Call with a pointer to a struct logininfo initialised with |
| 211 | * login_init_entry() or login_alloc_entry() |
| 212 | * |
| 213 | * Returns: |
| 214 | * >0 if successful |
| 215 | * 0 on failure (will use OpenSSH's logging facilities for diagnostics) |
| 216 | */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 217 | int |
| 218 | login_login (struct logininfo *li) |
| 219 | { |
| 220 | li->type = LTYPE_LOGIN; |
| 221 | return login_write(li); |
| 222 | } |
| 223 | |
| 224 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 225 | /* login_logout(struct logininfo *) - Record a logout |
| 226 | * |
| 227 | * Call as with login_login() |
| 228 | * |
| 229 | * Returns: |
| 230 | * >0 if successful |
| 231 | * 0 on failure (will use OpenSSH's logging facilities for diagnostics) |
| 232 | */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 233 | int |
| 234 | login_logout(struct logininfo *li) |
| 235 | { |
| 236 | li->type = LTYPE_LOGOUT; |
| 237 | return login_write(li); |
| 238 | } |
| 239 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 240 | /* login_get_lastlog_time(int) - Retrieve the last login time |
| 241 | * |
| 242 | * Retrieve the last login time for the given uid. Will try to use the |
| 243 | * system lastlog facilities if they are available, but will fall back |
| 244 | * to looking in wtmp/wtmpx if necessary |
| 245 | * |
| 246 | * Returns: |
| 247 | * 0 on failure, or if user has never logged in |
| 248 | * Time in seconds from the epoch if successful |
| 249 | * |
| 250 | * Useful preprocessor symbols: |
| 251 | * DISABLE_LASTLOG: If set, *never* even try to retrieve lastlog |
| 252 | * info |
| 253 | * USE_LASTLOG: If set, indicates the presence of system lastlog |
| 254 | * facilities. If this and DISABLE_LASTLOG are not set, |
| 255 | * try to retrieve lastlog information from wtmp/wtmpx. |
| 256 | */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 257 | unsigned int |
| 258 | login_get_lastlog_time(const int uid) |
| 259 | { |
| 260 | struct logininfo li; |
| 261 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 262 | if (login_get_lastlog(&li, uid)) |
| 263 | return li.tv_sec; |
| 264 | else |
| 265 | return 0; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 266 | } |
| 267 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 268 | /* login_get_lastlog(struct logininfo *, int) - Retrieve a lastlog entry |
| 269 | * |
| 270 | * Retrieve a logininfo structure populated (only partially) with |
| 271 | * information from the system lastlog data, or from wtmp/wtmpx if no |
| 272 | * system lastlog information exists. |
| 273 | * |
| 274 | * Note this routine must be given a pre-allocated logininfo. |
| 275 | * |
| 276 | * Returns: |
| 277 | * >0: A pointer to your struct logininfo if successful |
| 278 | * 0 on failure (will use OpenSSH's logging facilities for diagnostics) |
| 279 | * |
| 280 | */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 281 | struct logininfo * |
| 282 | login_get_lastlog(struct logininfo *li, const int uid) |
| 283 | { |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 284 | struct passwd *pw; |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 285 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 286 | memset(li, '\0', sizeof(struct logininfo)); |
| 287 | li->uid = uid; |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 288 | |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 289 | /* |
| 290 | * If we don't have a 'real' lastlog, we need the username to |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 291 | * reliably search wtmp(x) for the last login (see |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 292 | * wtmp_get_entry().) |
| 293 | */ |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 294 | pw = getpwuid(uid); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 295 | if (pw == NULL) |
| 296 | fatal("login_get_lastlog: Cannot find account for uid %i", uid); |
| 297 | |
andre | 98cabe0 | 2000-06-19 09:11:30 +0000 | [diff] [blame] | 298 | /* No MIN_SIZEOF here - we absolutely *must not* truncate the |
| 299 | * username */ |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 300 | strlcpy(li->username, pw->pw_name, sizeof(li->username)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 301 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 302 | if (getlast_entry(li)) |
| 303 | return li; |
| 304 | else |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 305 | return NULL; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 306 | } |
| 307 | |
| 308 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 309 | /* login_alloc_entry(int, char*, char*, char*) - Allocate and initialise |
| 310 | * a logininfo structure |
| 311 | * |
| 312 | * This function creates a new struct logininfo, a data structure |
| 313 | * meant to carry the information required to portably record login info. |
| 314 | * |
| 315 | * Returns a pointer to a newly created struct logininfo. If memory |
| 316 | * allocation fails, the program halts. |
| 317 | */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 318 | struct |
| 319 | logininfo *login_alloc_entry(int pid, const char *username, |
| 320 | const char *hostname, const char *line) |
| 321 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 322 | struct logininfo *newli; |
| 323 | |
| 324 | newli = (struct logininfo *) xmalloc (sizeof(struct logininfo)); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 325 | (void)login_init_entry(newli, pid, username, hostname, line); |
| 326 | return newli; |
| 327 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 328 | |
| 329 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 330 | /* login_free_entry(struct logininfo *) - free struct memory */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 331 | void |
| 332 | login_free_entry(struct logininfo *li) |
| 333 | { |
| 334 | xfree(li); |
| 335 | } |
| 336 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 337 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 338 | /* login_init_entry(struct logininfo *, int, char*, char*, char*) |
| 339 | * - initialise a struct logininfo |
| 340 | * |
| 341 | * Populates a new struct logininfo, a data structure meant to carry |
| 342 | * the information required to portably record login info. |
| 343 | * |
| 344 | * Returns: 1 |
| 345 | */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 346 | int |
| 347 | login_init_entry(struct logininfo *li, int pid, const char *username, |
| 348 | const char *hostname, const char *line) |
| 349 | { |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 350 | struct passwd *pw; |
| 351 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 352 | memset(li, 0, sizeof(struct logininfo)); |
| 353 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 354 | li->pid = pid; |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 355 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 356 | /* set the line information */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 357 | if (line) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 358 | line_fullname(li->line, line, sizeof(li->line)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 359 | |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 360 | if (username) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 361 | strlcpy(li->username, username, sizeof(li->username)); |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 362 | pw = getpwnam(li->username); |
| 363 | if (pw == NULL) |
| 364 | fatal("login_init_entry: Cannot find user \"%s\"", li->username); |
| 365 | li->uid = pw->pw_uid; |
| 366 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 367 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 368 | if (hostname) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 369 | strlcpy(li->hostname, hostname, sizeof(li->hostname)); |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 370 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 371 | return 1; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 372 | } |
| 373 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 374 | /* login_set_current_time(struct logininfo *) - set the current time |
| 375 | * |
| 376 | * Set the current time in a logininfo structure. This function is |
| 377 | * meant to eliminate the need to deal with system dependencies for |
| 378 | * time handling. |
| 379 | */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 380 | void |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 381 | login_set_current_time(struct logininfo *li) |
| 382 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 383 | struct timeval tv; |
| 384 | |
| 385 | gettimeofday(&tv, NULL); |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 386 | |
| 387 | li->tv_sec = tv.tv_sec; |
| 388 | li->tv_usec = tv.tv_usec; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 389 | } |
| 390 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 391 | /* copy a sockaddr_* into our logininfo */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 392 | void |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 393 | login_set_addr(struct logininfo *li, const struct sockaddr *sa, |
| 394 | const unsigned int sa_size) |
| 395 | { |
| 396 | unsigned int bufsize = sa_size; |
| 397 | |
| 398 | /* make sure we don't overrun our union */ |
| 399 | if (sizeof(li->hostaddr) < sa_size) |
| 400 | bufsize = sizeof(li->hostaddr); |
| 401 | |
| 402 | memcpy((void *)&(li->hostaddr.sa), (const void *)sa, bufsize); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 403 | } |
| 404 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 405 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 406 | /** |
| 407 | ** login_write: Call low-level recording functions based on autoconf |
| 408 | ** results |
| 409 | **/ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 410 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 411 | login_write (struct logininfo *li) |
| 412 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 413 | if ((int)geteuid() != 0) { |
| 414 | log("Attempt to write login records by non-root user (aborting)"); |
| 415 | return 1; |
| 416 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 417 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 418 | /* set the timestamp */ |
| 419 | login_set_current_time(li); |
| 420 | #ifdef USE_LOGIN |
| 421 | syslogin_write_entry(li); |
| 422 | #endif |
| 423 | #ifdef USE_LASTLOG |
| 424 | if (li->type == LTYPE_LOGIN) { |
| 425 | lastlog_write_entry(li); |
| 426 | } |
| 427 | #endif |
| 428 | #ifdef USE_UTMP |
| 429 | utmp_write_entry(li); |
| 430 | #endif |
| 431 | #ifdef USE_WTMP |
| 432 | wtmp_write_entry(li); |
| 433 | #endif |
| 434 | #ifdef USE_UTMPX |
| 435 | utmpx_write_entry(li); |
| 436 | #endif |
| 437 | #ifdef USE_WTMPX |
| 438 | wtmpx_write_entry(li); |
| 439 | #endif |
| 440 | return 0; |
| 441 | } |
| 442 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 443 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 444 | ** getlast_entry: Call low-level functions to retrieve the last login |
| 445 | ** time. |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 446 | **/ |
| 447 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 448 | /* take the uid in li and return the last login time */ |
| 449 | int |
| 450 | getlast_entry(struct logininfo *li) |
| 451 | { |
| 452 | #ifdef USE_LASTLOG |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 453 | return(lastlog_get_entry(li)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 454 | #else /* !USE_LASTLOG */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 455 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 456 | #ifdef DISABLE_LASTLOG |
andre | ecaabf1 | 2000-06-12 22:21:44 +0000 | [diff] [blame] | 457 | /* On some systems we shouldn't even try to obtain last login |
| 458 | * time, e.g. AIX */ |
| 459 | return 0; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 460 | # else /* DISABLE_LASTLOG */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 461 | /* Try to retrieve the last login time from wtmp */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 462 | # 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] | 463 | /* retrieve last login time from utmp */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 464 | return (wtmp_get_entry(li)); |
| 465 | # 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] | 466 | /* If wtmp isn't available, try wtmpx */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 467 | # 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] | 468 | /* retrieve last login time from utmpx */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 469 | return (wtmpx_get_entry(li)); |
| 470 | # else |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 471 | /* Give up: No means of retrieving last login time */ |
| 472 | return 0; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 473 | # endif /* USE_WTMPX && (HAVE_TIME_IN_UTMPX || HAVE_TV_IN_UTMPX) */ |
| 474 | # endif /* USE_WTMP && (HAVE_TIME_IN_UTMP || HAVE_TV_IN_UTMP) */ |
| 475 | # endif /* DISABLE_LASTLOG */ |
| 476 | #endif /* USE_LASTLOG */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 477 | } |
| 478 | |
| 479 | |
| 480 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 481 | /* |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 482 | * 'line' string utility functions |
| 483 | * |
| 484 | * These functions process the 'line' string into one of three forms: |
| 485 | * |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 486 | * 1. The full filename (including '/dev') |
| 487 | * 2. The stripped name (excluding '/dev') |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 488 | * 3. The abbreviated name (e.g. /dev/ttyp00 -> yp00 |
| 489 | * /dev/pts/1 -> ts/1 ) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 490 | * |
| 491 | * Form 3 is used on some systems to identify a .tmp.? entry when |
| 492 | * attempting to remove it. Typically both addition and removal is |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 493 | * performed by one application - say, sshd - so as long as the choice |
| 494 | * uniquely identifies a terminal it's ok. |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 495 | */ |
| 496 | |
| 497 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 498 | /* line_fullname(): add the leading '/dev/' if it doesn't exist make |
| 499 | * sure dst has enough space, if not just copy src (ugh) */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 500 | char * |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 501 | line_fullname(char *dst, const char *src, int dstsize) |
| 502 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 503 | memset(dst, '\0', dstsize); |
| 504 | if ((strncmp(src, "/dev/", 5) == 0) || (dstsize < (strlen(src) + 5))) |
| 505 | strlcpy(dst, src, dstsize); |
| 506 | else { |
Damien Miller | 1a13225 | 2000-06-13 21:23:17 +1000 | [diff] [blame] | 507 | strlcpy(dst, "/dev/", dstsize); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 508 | strlcat(dst, src, dstsize); |
| 509 | } |
| 510 | return dst; |
| 511 | } |
| 512 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 513 | /* line_stripname(): strip the leading '/dev' if it exists, return dst */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 514 | char * |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 515 | line_stripname(char *dst, const char *src, int dstsize) |
| 516 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 517 | memset(dst, '\0', dstsize); |
| 518 | if (strncmp(src, "/dev/", 5) == 0) |
| 519 | strlcpy(dst, &src[5], dstsize); |
| 520 | else |
| 521 | strlcpy(dst, src, dstsize); |
| 522 | return dst; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 523 | } |
| 524 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 525 | /* line_abbrevname(): Return the abbreviated (usually four-character) |
| 526 | * form of the line (Just use the last <dstsize> characters of the |
| 527 | * full name.) |
| 528 | * |
| 529 | * NOTE: use strncpy because we do NOT necessarily want zero |
| 530 | * termination */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 531 | char * |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 532 | line_abbrevname(char *dst, const char *src, int dstsize) |
| 533 | { |
| 534 | size_t len; |
| 535 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 536 | memset(dst, '\0', dstsize); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 537 | |
Damien Miller | 8e81ed3 | 2000-07-01 13:17:42 +1000 | [diff] [blame] | 538 | /* Always skip prefix if present */ |
| 539 | if (strncmp(src, "/dev/", 5) == 0) |
| 540 | src += 5; |
| 541 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 542 | len = strlen(src); |
| 543 | |
Damien Miller | 8e81ed3 | 2000-07-01 13:17:42 +1000 | [diff] [blame] | 544 | if (len > 0) { |
| 545 | if (((int)len - dstsize) > 0) |
| 546 | src += ((int)len - dstsize); |
| 547 | |
| 548 | /* note: _don't_ change this to strlcpy */ |
| 549 | strncpy(dst, src, (size_t)dstsize); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 550 | } |
| 551 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 552 | return dst; |
| 553 | } |
| 554 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 555 | /** |
| 556 | ** utmp utility functions |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 557 | ** |
| 558 | ** These functions manipulate struct utmp, taking system differences |
| 559 | ** into account. |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 560 | **/ |
| 561 | |
| 562 | #if defined(USE_UTMP) || defined (USE_WTMP) || defined (USE_LOGIN) |
| 563 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 564 | /* build the utmp structure */ |
| 565 | void |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 566 | set_utmp_time(struct logininfo *li, struct utmp *ut) |
| 567 | { |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 568 | # ifdef HAVE_TV_IN_UTMP |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 569 | ut->ut_tv.tv_sec = li->tv_sec; |
| 570 | ut->ut_tv.tv_usec = li->tv_usec; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 571 | # else |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 572 | # ifdef HAVE_TIME_IN_UTMP |
| 573 | ut->ut_time = li->tv_sec; |
| 574 | # endif |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 575 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 576 | } |
| 577 | |
| 578 | void |
| 579 | construct_utmp(struct logininfo *li, |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 580 | struct utmp *ut) |
| 581 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 582 | memset(ut, '\0', sizeof(struct utmp)); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 583 | |
| 584 | /* First fill out fields used for both logins and logouts */ |
| 585 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 586 | # ifdef HAVE_ID_IN_UTMP |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 587 | line_abbrevname(ut->ut_id, li->line, sizeof(ut->ut_id)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 588 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 589 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 590 | # ifdef HAVE_TYPE_IN_UTMP |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 591 | /* This is done here to keep utmp constants out of struct logininfo */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 592 | switch (li->type) { |
| 593 | case LTYPE_LOGIN: |
| 594 | ut->ut_type = USER_PROCESS; |
| 595 | break; |
| 596 | case LTYPE_LOGOUT: |
| 597 | ut->ut_type = DEAD_PROCESS; |
| 598 | break; |
| 599 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 600 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 601 | set_utmp_time(li, ut); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 602 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 603 | line_stripname(ut->ut_line, li->line, sizeof(ut->ut_line)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 604 | |
| 605 | # ifdef HAVE_PID_IN_UTMP |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 606 | ut->ut_pid = li->pid; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 607 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 608 | |
| 609 | /* If we're logging out, leave all other fields blank */ |
| 610 | if (li->type == LTYPE_LOGOUT) |
| 611 | return; |
| 612 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 613 | /* |
| 614 | * These fields are only used when logging in, and are blank |
| 615 | * for logouts. |
| 616 | */ |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 617 | |
| 618 | /* Use strncpy because we don't necessarily want null termination */ |
| 619 | strncpy(ut->ut_user, li->username, MIN_SIZEOF(ut->ut_user, li->username)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 620 | # ifdef HAVE_HOST_IN_UTMP |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 621 | 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] | 622 | # endif |
| 623 | # ifdef HAVE_ADDR_IN_UTMP |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 624 | /* this is just a 32-bit IP address */ |
| 625 | if (li->hostaddr.sa.sa_family == AF_INET) |
| 626 | ut->ut_addr = li->hostaddr.sa_in.sin_addr.s_addr; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 627 | # endif |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 628 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 629 | #endif /* USE_UTMP || USE_WTMP || USE_LOGIN */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 630 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 631 | /** |
| 632 | ** utmpx utility functions |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 633 | ** |
| 634 | ** These functions manipulate struct utmpx, accounting for system |
| 635 | ** variations. |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 636 | **/ |
| 637 | |
| 638 | #if defined(USE_UTMPX) || defined (USE_WTMPX) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 639 | /* build the utmpx structure */ |
| 640 | void |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 641 | set_utmpx_time(struct logininfo *li, struct utmpx *utx) |
| 642 | { |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 643 | # ifdef HAVE_TV_IN_UTMPX |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 644 | utx->ut_tv.tv_sec = li->tv_sec; |
| 645 | utx->ut_tv.tv_usec = li->tv_usec; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 646 | # else /* HAVE_TV_IN_UTMPX */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 647 | # ifdef HAVE_TIME_IN_UTMPX |
| 648 | utx->ut_time = li->tv_sec; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 649 | # endif /* HAVE_TIME_IN_UTMPX */ |
| 650 | # endif /* HAVE_TV_IN_UTMPX */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 651 | } |
| 652 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 653 | void |
| 654 | construct_utmpx(struct logininfo *li, struct utmpx *utx) |
| 655 | { |
| 656 | memset(utx, '\0', sizeof(struct utmpx)); |
Damien Miller | 8e81ed3 | 2000-07-01 13:17:42 +1000 | [diff] [blame] | 657 | # ifdef HAVE_ID_IN_UTMPX |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 658 | line_abbrevname(utx->ut_id, li->line, sizeof(utx->ut_id)); |
Damien Miller | 8e81ed3 | 2000-07-01 13:17:42 +1000 | [diff] [blame] | 659 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 660 | |
| 661 | /* this is done here to keep utmp constants out of loginrec.h */ |
| 662 | switch (li->type) { |
| 663 | case LTYPE_LOGIN: |
| 664 | utx->ut_type = USER_PROCESS; |
| 665 | break; |
| 666 | case LTYPE_LOGOUT: |
| 667 | utx->ut_type = DEAD_PROCESS; |
| 668 | break; |
| 669 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 670 | line_stripname(utx->ut_line, li->line, sizeof(utx->ut_line)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 671 | set_utmpx_time(li, utx); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 672 | utx->ut_pid = li->pid; |
| 673 | |
| 674 | if (li->type == LTYPE_LOGOUT) |
| 675 | return; |
| 676 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 677 | /* |
| 678 | * These fields are only used when logging in, and are blank |
| 679 | * for logouts. |
| 680 | */ |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 681 | |
| 682 | /* strncpy(): Don't necessarily want null termination */ |
| 683 | 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] | 684 | # ifdef HAVE_HOST_IN_UTMPX |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 685 | 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] | 686 | # endif |
| 687 | # ifdef HAVE_ADDR_IN_UTMPX |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 688 | /* FIXME: (ATL) not supported yet */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 689 | # endif |
| 690 | # ifdef HAVE_SYSLEN_IN_UTMPX |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 691 | /* ut_syslen is the length of the utx_host string */ |
| 692 | utx->ut_syslen = MIN(strlen(li->hostname), sizeof(utx->ut_host)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 693 | # endif |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 694 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 695 | #endif /* USE_UTMPX || USE_WTMPX */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 696 | |
| 697 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 698 | ** Low-level utmp functions |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 699 | **/ |
| 700 | |
| 701 | /* FIXME: (ATL) utmp_write_direct needs testing */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 702 | #ifdef USE_UTMP |
| 703 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 704 | /* if we can, use pututline() etc. */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 705 | # if !defined(DISABLE_PUTUTLINE) && defined(HAVE_SETUTENT) && \ |
| 706 | defined(HAVE_PUTUTLINE) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 707 | # define UTMP_USE_LIBRARY |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 708 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 709 | |
| 710 | |
| 711 | /* write a utmp entry with the system's help (pututline() and pals) */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 712 | # ifdef UTMP_USE_LIBRARY |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 713 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 714 | utmp_write_library(struct logininfo *li, struct utmp *ut) |
| 715 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 716 | setutent(); |
| 717 | pututline(ut); |
| 718 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 719 | # ifdef HAVE_ENDUTENT |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 720 | endutent(); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 721 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 722 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 723 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 724 | # else /* UTMP_USE_LIBRARY */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 725 | |
| 726 | /* write a utmp entry direct to the file */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 727 | /* This is a slightly modification of code in OpenBSD's login.c */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 728 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 729 | utmp_write_direct(struct logininfo *li, struct utmp *ut) |
| 730 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 731 | struct utmp old_ut; |
| 732 | register int fd; |
| 733 | int tty; |
| 734 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 735 | /* FIXME: (ATL) ttyslot() needs local implementation */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 736 | tty = ttyslot(); /* seems only to work for /dev/ttyp? style names */ |
| 737 | |
| 738 | if (tty > 0 && (fd = open(UTMP_FILE, O_RDWR|O_CREAT, 0644)) >= 0) { |
| 739 | (void)lseek(fd, (off_t)(tty * sizeof(struct utmp)), SEEK_SET); |
| 740 | /* |
| 741 | * Prevent luser from zero'ing out ut_host. |
| 742 | * If the new ut_line is empty but the old one is not |
| 743 | * and ut_line and ut_name match, preserve the old ut_line. |
| 744 | */ |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 745 | if (atomicio(read, fd, &old_ut, sizeof(old_ut)) == sizeof(old_ut) && |
| 746 | (ut->ut_host[0] == '\0') && (old_ut.ut_host[0] != '\0') && |
| 747 | (strncmp(old_ut.ut_line, ut->ut_line, sizeof(ut->ut_line)) == 0) && |
| 748 | (strncmp(old_ut.ut_name, ut->ut_name, sizeof(ut->ut_name)) == 0)) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 749 | (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] | 750 | } |
| 751 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 752 | (void)lseek(fd, (off_t)(tty * sizeof(struct utmp)), SEEK_SET); |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 753 | if (atomicio(write, fd, ut, sizeof(ut)) != sizeof(ut)) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 754 | log("utmp_write_direct: error writing %s: %s", |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 755 | UTMP_FILE, strerror(errno)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 756 | |
| 757 | (void)close(fd); |
| 758 | return 1; |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 759 | } else { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 760 | return 0; |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 761 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 762 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 763 | # endif /* UTMP_USE_LIBRARY */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 764 | |
| 765 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 766 | utmp_perform_login(struct logininfo *li) |
| 767 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 768 | struct utmp ut; |
| 769 | |
| 770 | construct_utmp(li, &ut); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 771 | # ifdef UTMP_USE_LIBRARY |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 772 | if (!utmp_write_library(li, &ut)) { |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 773 | log("utmp_perform_login: utmp_write_library() failed"); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 774 | return 0; |
| 775 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 776 | # else |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 777 | if (!utmp_write_direct(li, &ut)) { |
| 778 | log("utmp_perform_login: utmp_write_direct() failed"); |
| 779 | return 0; |
| 780 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 781 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 782 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 783 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 784 | |
| 785 | |
| 786 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 787 | utmp_perform_logout(struct logininfo *li) |
| 788 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 789 | struct utmp ut; |
| 790 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 791 | construct_utmp(li, &ut); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 792 | # ifdef UTMP_USE_LIBRARY |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 793 | if (!utmp_write_library(li, &ut)) { |
| 794 | log("utmp_perform_logout: utmp_write_library() failed"); |
| 795 | return 0; |
| 796 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 797 | # else |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 798 | if (!utmp_write_direct(li, &ut)) { |
| 799 | log("utmp_perform_logout: utmp_write_direct() failed"); |
| 800 | return 0; |
| 801 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 802 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 803 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 804 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 805 | |
| 806 | |
| 807 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 808 | utmp_write_entry(struct logininfo *li) |
| 809 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 810 | switch(li->type) { |
| 811 | case LTYPE_LOGIN: |
| 812 | return utmp_perform_login(li); |
| 813 | |
| 814 | case LTYPE_LOGOUT: |
| 815 | return utmp_perform_logout(li); |
| 816 | |
| 817 | default: |
| 818 | log("utmp_write_entry: invalid type field"); |
| 819 | return 0; |
| 820 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 821 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 822 | #endif /* USE_UTMP */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 823 | |
| 824 | |
| 825 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 826 | ** Low-level utmpx functions |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 827 | **/ |
| 828 | |
| 829 | /* not much point if we don't want utmpx entries */ |
| 830 | #ifdef USE_UTMPX |
| 831 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 832 | /* if we have the wherewithall, use pututxline etc. */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 833 | # if !defined(DISABLE_PUTUTXLINE) && defined(HAVE_SETUTXENT) && \ |
| 834 | defined(HAVE_PUTUTXLINE) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 835 | # define UTMPX_USE_LIBRARY |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 836 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 837 | |
| 838 | |
| 839 | /* write a utmpx entry with the system's help (pututxline() and pals) */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 840 | # ifdef UTMPX_USE_LIBRARY |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 841 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 842 | utmpx_write_library(struct logininfo *li, struct utmpx *utx) |
| 843 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 844 | setutxent(); |
| 845 | pututxline(utx); |
| 846 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 847 | # ifdef HAVE_ENDUTXENT |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 848 | endutxent(); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 849 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 850 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 851 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 852 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 853 | # else /* UTMPX_USE_LIBRARY */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 854 | |
| 855 | /* write a utmp entry direct to the file */ |
| 856 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 857 | utmpx_write_direct(struct logininfo *li, struct utmpx *utx) |
| 858 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 859 | log("utmpx_write_direct: not implemented!"); |
| 860 | return 0; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 861 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 862 | # endif /* UTMPX_USE_LIBRARY */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 863 | |
| 864 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 865 | utmpx_perform_login(struct logininfo *li) |
| 866 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 867 | struct utmpx utx; |
| 868 | |
| 869 | construct_utmpx(li, &utx); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 870 | # ifdef UTMPX_USE_LIBRARY |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 871 | if (!utmpx_write_library(li, &utx)) { |
| 872 | log("utmpx_perform_login: utmp_write_library() failed"); |
| 873 | return 0; |
| 874 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 875 | # else |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 876 | if (!utmpx_write_direct(li, &ut)) { |
| 877 | log("utmpx_perform_login: utmp_write_direct() failed"); |
| 878 | return 0; |
| 879 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 880 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 881 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 882 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 883 | |
| 884 | |
| 885 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 886 | utmpx_perform_logout(struct logininfo *li) |
| 887 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 888 | struct utmpx utx; |
| 889 | |
| 890 | memset(&utx, '\0', sizeof(utx)); |
| 891 | set_utmpx_time(li, &utx); |
| 892 | line_stripname(utx.ut_line, li->line, sizeof(utx.ut_line)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 893 | # ifdef HAVE_ID_IN_UTMPX |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 894 | line_abbrevname(utx.ut_id, li->line, sizeof(utx.ut_id)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 895 | # endif |
| 896 | # ifdef HAVE_TYPE_IN_UTMPX |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 897 | utx.ut_type = DEAD_PROCESS; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 898 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 899 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 900 | # ifdef UTMPX_USE_LIBRARY |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 901 | utmpx_write_library(li, &utx); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 902 | # else |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 903 | utmpx_write_direct(li, &utx); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 904 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 905 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 906 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 907 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 908 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 909 | utmpx_write_entry(struct logininfo *li) |
| 910 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 911 | switch(li->type) { |
| 912 | case LTYPE_LOGIN: |
| 913 | return utmpx_perform_login(li); |
| 914 | case LTYPE_LOGOUT: |
| 915 | return utmpx_perform_logout(li); |
| 916 | default: |
| 917 | log("utmpx_write_entry: invalid type field"); |
| 918 | return 0; |
| 919 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 920 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 921 | #endif /* USE_UTMPX */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 922 | |
| 923 | |
| 924 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 925 | ** Low-level wtmp functions |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 926 | **/ |
| 927 | |
| 928 | #ifdef USE_WTMP |
| 929 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 930 | /* write a wtmp entry direct to the end of the file */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 931 | /* This is a slight modification of code in OpenBSD's logwtmp.c */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 932 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 933 | wtmp_write(struct logininfo *li, struct utmp *ut) |
| 934 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 935 | struct stat buf; |
| 936 | int fd, ret = 1; |
| 937 | |
| 938 | if ((fd = open(WTMP_FILE, O_WRONLY|O_APPEND, 0)) < 0) { |
| 939 | log("wtmp_write: problem writing %s: %s", |
| 940 | WTMP_FILE, strerror(errno)); |
| 941 | return 0; |
| 942 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 943 | if (fstat(fd, &buf) == 0) |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 944 | if (atomicio(write, fd, ut, sizeof(*ut)) != sizeof(*ut)) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 945 | ftruncate(fd, buf.st_size); |
| 946 | log("wtmp_write: problem writing %s: %s", |
| 947 | WTMP_FILE, strerror(errno)); |
| 948 | ret = 0; |
| 949 | } |
| 950 | (void)close(fd); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 951 | return ret; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 952 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 953 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 954 | static int |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 955 | wtmp_perform_login(struct logininfo *li) |
| 956 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 957 | struct utmp ut; |
| 958 | |
| 959 | construct_utmp(li, &ut); |
| 960 | return wtmp_write(li, &ut); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 961 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 962 | |
| 963 | |
| 964 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 965 | wtmp_perform_logout(struct logininfo *li) |
| 966 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 967 | struct utmp ut; |
| 968 | |
| 969 | construct_utmp(li, &ut); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 970 | return wtmp_write(li, &ut); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 971 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 972 | |
| 973 | |
| 974 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 975 | wtmp_write_entry(struct logininfo *li) |
| 976 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 977 | switch(li->type) { |
| 978 | case LTYPE_LOGIN: |
| 979 | return wtmp_perform_login(li); |
| 980 | case LTYPE_LOGOUT: |
| 981 | return wtmp_perform_logout(li); |
| 982 | default: |
| 983 | log("wtmp_write_entry: invalid type field"); |
| 984 | return 0; |
| 985 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 986 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 987 | |
| 988 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 989 | /* Notes on fetching login data from wtmp/wtmpx |
| 990 | * |
| 991 | * Logouts are usually recorded with (amongst other things) a blank |
| 992 | * username on a given tty line. However, some systems (HP-UX is one) |
| 993 | * leave all fields set, but change the ut_type field to DEAD_PROCESS. |
| 994 | * |
| 995 | * Since we're only looking for logins here, we know that the username |
| 996 | * must be set correctly. On systems that leave it in, we check for |
| 997 | * ut_type==USER_PROCESS (indicating a login.) |
| 998 | * |
| 999 | * Portability: Some systems may set something other than USER_PROCESS |
| 1000 | * to indicate a login process. I don't know of any as I write. Also, |
| 1001 | * it's possible that some systems may both leave the username in |
| 1002 | * place and not have ut_type. |
| 1003 | */ |
| 1004 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1005 | /* return true if this wtmp entry indicates a login */ |
| 1006 | static int |
| 1007 | wtmp_islogin(struct logininfo *li, struct utmp *ut) |
| 1008 | { |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1009 | if (strncmp(li->username, ut->ut_user, |
| 1010 | MIN_SIZEOF(li->username, ut->ut_user)) == 0) { |
| 1011 | # ifdef HAVE_TYPE_IN_UTMP |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1012 | if (ut->ut_type & USER_PROCESS) |
| 1013 | return 1; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1014 | # else |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1015 | return 1; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1016 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1017 | } |
| 1018 | return 0; |
| 1019 | } |
| 1020 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1021 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1022 | wtmp_get_entry(struct logininfo *li) |
| 1023 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1024 | struct stat st; |
| 1025 | struct utmp ut; |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1026 | int fd, found=0; |
| 1027 | |
| 1028 | /* Clear the time entries in our logininfo */ |
| 1029 | li->tv_sec = li->tv_usec = 0; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1030 | |
| 1031 | if ((fd = open(WTMP_FILE, O_RDONLY)) < 0) { |
| 1032 | log("wtmp_get_entry: problem opening %s: %s", |
| 1033 | WTMP_FILE, strerror(errno)); |
| 1034 | return 0; |
| 1035 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1036 | if (fstat(fd, &st) != 0) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1037 | log("wtmp_get_entry: couldn't stat %s: %s", |
| 1038 | WTMP_FILE, strerror(errno)); |
| 1039 | close(fd); |
| 1040 | return 0; |
| 1041 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1042 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1043 | /* Seek to the start of the last struct utmp */ |
| 1044 | if (lseek(fd, (off_t)(0-sizeof(struct utmp)), SEEK_END) == -1) { |
| 1045 | /* Looks like we've got a fresh wtmp file */ |
| 1046 | close(fd); |
| 1047 | return 0; |
| 1048 | } |
| 1049 | |
| 1050 | while (!found) { |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 1051 | if (atomicio(read, fd, &ut, sizeof(ut)) != sizeof(ut)) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1052 | log("wtmp_get_entry: read of %s failed: %s", |
| 1053 | WTMP_FILE, strerror(errno)); |
| 1054 | close (fd); |
| 1055 | return 0; |
| 1056 | } |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1057 | if ( wtmp_islogin(li, &ut) ) { |
| 1058 | found = 1; |
| 1059 | /* We've already checked for a time in struct |
| 1060 | * utmp, in login_getlast(). */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1061 | # ifdef HAVE_TIME_IN_UTMP |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1062 | li->tv_sec = ut.ut_time; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1063 | # else |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1064 | # if HAVE_TV_IN_UTMP |
| 1065 | li->tv_sec = ut.ut_tv.tv_sec; |
| 1066 | # endif |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1067 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1068 | line_fullname(li->line, ut.ut_line, |
| 1069 | MIN_SIZEOF(li->line, ut.ut_line)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1070 | # ifdef HAVE_HOST_IN_UTMP |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1071 | strlcpy(li->hostname, ut.ut_host, |
| 1072 | MIN_SIZEOF(li->hostname, ut.ut_host)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1073 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1074 | continue; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1075 | } |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1076 | /* Seek back 2 x struct utmp */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1077 | if (lseek(fd, (off_t)(0-2*sizeof(struct utmp)), SEEK_CUR) == -1) { |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1078 | /* We've found the start of the file, so quit */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1079 | close (fd); |
| 1080 | return 0; |
| 1081 | } |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1082 | } |
| 1083 | |
| 1084 | /* We found an entry. Tidy up and return */ |
| 1085 | close(fd); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1086 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1087 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1088 | # endif /* USE_WTMP */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1089 | |
| 1090 | |
| 1091 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1092 | ** Low-level wtmpx functions |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1093 | **/ |
| 1094 | |
| 1095 | #ifdef USE_WTMPX |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1096 | /* write a wtmpx entry direct to the end of the file */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1097 | /* This is a slight modification of code in OpenBSD's logwtmp.c */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1098 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1099 | wtmpx_write(struct logininfo *li, struct utmpx *utx) |
| 1100 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1101 | struct stat buf; |
| 1102 | int fd, ret = 1; |
| 1103 | |
| 1104 | if ((fd = open(WTMPX_FILE, O_WRONLY|O_APPEND, 0)) < 0) { |
| 1105 | log("wtmpx_write: problem opening %s: %s", |
| 1106 | WTMPX_FILE, strerror(errno)); |
| 1107 | return 0; |
| 1108 | } |
| 1109 | |
| 1110 | if (fstat(fd, &buf) == 0) |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 1111 | if (atomicio(write, fd, utx, sizeof(*utx)) != sizeof(*utx)) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1112 | ftruncate(fd, buf.st_size); |
| 1113 | log("wtmpx_write: problem writing %s: %s", |
| 1114 | WTMPX_FILE, strerror(errno)); |
| 1115 | ret = 0; |
| 1116 | } |
| 1117 | (void)close(fd); |
| 1118 | |
| 1119 | return ret; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1120 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1121 | |
| 1122 | |
| 1123 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1124 | wtmpx_perform_login(struct logininfo *li) |
| 1125 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1126 | struct utmpx utx; |
| 1127 | |
| 1128 | construct_utmpx(li, &utx); |
| 1129 | return wtmpx_write(li, &utx); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1130 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1131 | |
| 1132 | |
| 1133 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1134 | wtmpx_perform_logout(struct logininfo *li) |
| 1135 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1136 | struct utmpx utx; |
| 1137 | |
| 1138 | construct_utmpx(li, &utx); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1139 | return wtmpx_write(li, &utx); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1140 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1141 | |
| 1142 | |
| 1143 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1144 | wtmpx_write_entry(struct logininfo *li) |
| 1145 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1146 | switch(li->type) { |
| 1147 | case LTYPE_LOGIN: |
| 1148 | return wtmpx_perform_login(li); |
| 1149 | case LTYPE_LOGOUT: |
| 1150 | return wtmpx_perform_logout(li); |
| 1151 | default: |
| 1152 | log("wtmpx_write_entry: invalid type field"); |
| 1153 | return 0; |
| 1154 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1155 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1156 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1157 | /* Please see the notes above wtmp_islogin() for information about the |
| 1158 | next two functions */ |
| 1159 | |
| 1160 | /* Return true if this wtmpx entry indicates a login */ |
| 1161 | static int |
| 1162 | wtmpx_islogin(struct logininfo *li, struct utmpx *utx) |
| 1163 | { |
| 1164 | if ( strncmp(li->username, utx->ut_user, |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1165 | MIN_SIZEOF(li->username, utx->ut_user)) == 0 ) { |
| 1166 | # ifdef HAVE_TYPE_IN_UTMPX |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1167 | if (utx->ut_type == USER_PROCESS) |
| 1168 | return 1; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1169 | # else |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1170 | return 1; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1171 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1172 | } |
| 1173 | return 0; |
| 1174 | } |
| 1175 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1176 | |
| 1177 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1178 | wtmpx_get_entry(struct logininfo *li) |
| 1179 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1180 | struct stat st; |
| 1181 | struct utmpx utx; |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1182 | int fd, found=0; |
| 1183 | |
| 1184 | /* Clear the time entries */ |
| 1185 | li->tv_sec = li->tv_usec = 0; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1186 | |
| 1187 | if ((fd = open(WTMPX_FILE, O_RDONLY)) < 0) { |
| 1188 | log("wtmpx_get_entry: problem opening %s: %s", |
| 1189 | WTMPX_FILE, strerror(errno)); |
| 1190 | return 0; |
| 1191 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1192 | if (fstat(fd, &st) != 0) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1193 | log("wtmpx_get_entry: couldn't stat %s: %s", |
| 1194 | WTMP_FILE, strerror(errno)); |
| 1195 | close(fd); |
| 1196 | return 0; |
| 1197 | } |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1198 | |
| 1199 | /* Seek to the start of the last struct utmpx */ |
| 1200 | if (lseek(fd, (off_t)(0-sizeof(struct utmpx)), SEEK_END) == -1 ) { |
| 1201 | /* probably a newly rotated wtmpx file */ |
| 1202 | close(fd); |
| 1203 | return 0; |
| 1204 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1205 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1206 | while (!found) { |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 1207 | if (atomicio(read, fd, &utx, sizeof(utx)) != sizeof(utx)) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1208 | log("wtmpx_get_entry: read of %s failed: %s", |
| 1209 | WTMPX_FILE, strerror(errno)); |
| 1210 | close (fd); |
| 1211 | return 0; |
| 1212 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1213 | /* Logouts are recorded as a blank username on a particular line. |
| 1214 | * So, we just need to find the username in struct utmpx */ |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1215 | if ( wtmpx_islogin(li, &utx) ) { |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1216 | # ifdef HAVE_TV_IN_UTMPX |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1217 | li->tv_sec = utx.ut_tv.tv_sec; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1218 | # else |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1219 | # ifdef HAVE_TIME_IN_UTMPX |
| 1220 | li->tv_sec = utx.ut_time; |
| 1221 | # endif |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1222 | # endif |
Damien Miller | 1a13225 | 2000-06-13 21:23:17 +1000 | [diff] [blame] | 1223 | line_fullname(li->line, utx.ut_line, sizeof(li->line)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1224 | # ifdef HAVE_HOST_IN_UTMPX |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1225 | strlcpy(li->hostname, utx.ut_host, |
| 1226 | MIN_SIZEOF(li->hostname, utx.ut_host)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1227 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1228 | continue; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1229 | } |
| 1230 | if (lseek(fd, (off_t)(0-2*sizeof(struct utmpx)), SEEK_CUR) == -1) { |
| 1231 | close (fd); |
| 1232 | return 0; |
| 1233 | } |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1234 | } |
| 1235 | |
| 1236 | close(fd); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1237 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1238 | } |
Damien Miller | d5bf307 | 2000-06-07 21:32:13 +1000 | [diff] [blame] | 1239 | #endif /* USE_WTMPX */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1240 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1241 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1242 | ** Low-level libutil login() functions |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1243 | **/ |
| 1244 | |
| 1245 | #ifdef USE_LOGIN |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1246 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1247 | syslogin_perform_login(struct logininfo *li) |
| 1248 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1249 | struct utmp *ut; |
| 1250 | |
| 1251 | if (! (ut = (struct utmp *)malloc(sizeof(struct utmp)))) { |
| 1252 | log("syslogin_perform_login: couldn't malloc()"); |
| 1253 | return 0; |
| 1254 | } |
| 1255 | construct_utmp(li, ut); |
| 1256 | login(ut); |
| 1257 | |
| 1258 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1259 | } |
| 1260 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1261 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1262 | syslogin_perform_logout(struct logininfo *li) |
| 1263 | { |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1264 | # ifdef HAVE_LOGOUT |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1265 | char line[8]; |
| 1266 | |
| 1267 | (void)line_stripname(line, li->line, sizeof(line)); |
| 1268 | |
| 1269 | if (!logout(line)) { |
| 1270 | log("syslogin_perform_logout: logout() returned an error"); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1271 | # ifdef HAVE_LOGWTMP |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1272 | } else { |
| 1273 | logwtmp(line, "", ""); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1274 | # endif |
Damien Miller | 9b6d4ab | 2000-07-02 08:43:18 +1000 | [diff] [blame^] | 1275 | } |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1276 | /* FIXME: (ATL - if the need arises) What to do if we have |
| 1277 | * login, but no logout? what if logout but no logwtmp? All |
| 1278 | * routines are in libutil so they should all be there, |
| 1279 | * but... */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1280 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1281 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1282 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1283 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1284 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1285 | syslogin_write_entry(struct logininfo *li) |
| 1286 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1287 | switch (li->type) { |
| 1288 | case LTYPE_LOGIN: |
| 1289 | return syslogin_perform_login(li); |
| 1290 | case LTYPE_LOGOUT: |
| 1291 | return syslogin_perform_logout(li); |
| 1292 | default: |
| 1293 | log("syslogin_write_entry: Invalid type field"); |
| 1294 | return 0; |
| 1295 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1296 | } |
Damien Miller | d5bf307 | 2000-06-07 21:32:13 +1000 | [diff] [blame] | 1297 | #endif /* USE_LOGIN */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1298 | |
| 1299 | /* end of file log-syslogin.c */ |
| 1300 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1301 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1302 | ** Low-level lastlog functions |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1303 | **/ |
| 1304 | |
| 1305 | #ifdef USE_LASTLOG |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1306 | #define LL_FILE 1 |
| 1307 | #define LL_DIR 2 |
| 1308 | #define LL_OTHER 3 |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1309 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1310 | static void |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1311 | lastlog_construct(struct logininfo *li, struct lastlog *last) |
| 1312 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1313 | /* clear the structure */ |
| 1314 | memset(last, '\0', sizeof(struct lastlog)); |
| 1315 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1316 | (void)line_stripname(last->ll_line, li->line, sizeof(last->ll_line)); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1317 | strlcpy(last->ll_host, li->hostname, |
| 1318 | MIN_SIZEOF(last->ll_host, li->hostname)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1319 | last->ll_time = li->tv_sec; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1320 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1321 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1322 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1323 | lastlog_filetype(char *filename) |
| 1324 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1325 | struct stat st; |
| 1326 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1327 | if (stat(LASTLOG_FILE, &st) != 0) { |
| 1328 | log("lastlog_perform_login: Couldn't stat %s: %s", LASTLOG_FILE, |
| 1329 | strerror(errno)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1330 | return 0; |
| 1331 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1332 | if (S_ISDIR(st.st_mode)) |
| 1333 | return LL_DIR; |
| 1334 | else if (S_ISREG(st.st_mode)) |
| 1335 | return LL_FILE; |
| 1336 | else |
| 1337 | return LL_OTHER; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1338 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1339 | |
| 1340 | |
| 1341 | /* open the file (using filemode) and seek to the login entry */ |
| 1342 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1343 | lastlog_openseek(struct logininfo *li, int *fd, int filemode) |
| 1344 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1345 | off_t offset; |
| 1346 | int type; |
| 1347 | char lastlog_file[1024]; |
| 1348 | |
| 1349 | type = lastlog_filetype(LASTLOG_FILE); |
| 1350 | switch (type) { |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 1351 | case LL_FILE: |
| 1352 | strlcpy(lastlog_file, LASTLOG_FILE, sizeof(lastlog_file)); |
| 1353 | break; |
| 1354 | case LL_DIR: |
| 1355 | snprintf(lastlog_file, sizeof(lastlog_file), "%s/%s", |
| 1356 | LASTLOG_FILE, li->username); |
| 1357 | break; |
| 1358 | default: |
| 1359 | log("lastlog_openseek: %.100s is not a file or directory!", |
| 1360 | LASTLOG_FILE); |
| 1361 | return 0; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1362 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1363 | |
| 1364 | *fd = open(lastlog_file, filemode); |
| 1365 | if ( *fd < 0) { |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 1366 | debug("lastlog_openseek: Couldn't open %s: %s", |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1367 | lastlog_file, strerror(errno)); |
| 1368 | return 0; |
| 1369 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1370 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1371 | /* find this uid's offset in the lastlog file */ |
| 1372 | offset = (off_t) ( (long)li->uid * sizeof(struct lastlog)); |
| 1373 | |
| 1374 | if ( lseek(*fd, offset, SEEK_SET) != offset ) { |
| 1375 | log("lastlog_openseek: %s->lseek(): %s", |
| 1376 | lastlog_file, strerror(errno)); |
| 1377 | return 0; |
| 1378 | } |
| 1379 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1380 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1381 | |
| 1382 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1383 | lastlog_perform_login(struct logininfo *li) |
| 1384 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1385 | struct lastlog last; |
| 1386 | int fd; |
| 1387 | |
| 1388 | /* create our struct lastlog */ |
| 1389 | lastlog_construct(li, &last); |
| 1390 | |
| 1391 | /* write the entry */ |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 1392 | if (lastlog_openseek(li, &fd, O_RDWR|O_CREAT)) { |
| 1393 | if (atomicio(write, fd, &last, sizeof(last)) != sizeof(last)) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1394 | log("lastlog_write_filemode: Error writing to %s: %s", |
| 1395 | LASTLOG_FILE, strerror(errno)); |
| 1396 | return 0; |
| 1397 | } |
| 1398 | return 1; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1399 | } else { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1400 | return 0; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1401 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1402 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1403 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1404 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1405 | lastlog_write_entry(struct logininfo *li) |
| 1406 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1407 | switch(li->type) { |
| 1408 | case LTYPE_LOGIN: |
| 1409 | return lastlog_perform_login(li); |
| 1410 | default: |
| 1411 | log("lastlog_write_entry: Invalid type field"); |
| 1412 | return 0; |
| 1413 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1414 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1415 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1416 | static void |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1417 | lastlog_populate_entry(struct logininfo *li, struct lastlog *last) |
| 1418 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1419 | line_fullname(li->line, last->ll_line, sizeof(li->line)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1420 | strlcpy(li->hostname, last->ll_host, |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1421 | MIN_SIZEOF(li->hostname, last->ll_host)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1422 | li->tv_sec = last->ll_time; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1423 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1424 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1425 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1426 | lastlog_get_entry(struct logininfo *li) |
| 1427 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1428 | struct lastlog last; |
| 1429 | int fd; |
| 1430 | |
| 1431 | if (lastlog_openseek(li, &fd, O_RDONLY)) { |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 1432 | if (atomicio(read, fd, &last, sizeof(last)) != sizeof(last)) { |
| 1433 | log("lastlog_get_entry: Error reading from %s: %s", |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1434 | LASTLOG_FILE, strerror(errno)); |
| 1435 | return 0; |
| 1436 | } else { |
| 1437 | lastlog_populate_entry(li, &last); |
| 1438 | return 1; |
| 1439 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1440 | } else { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1441 | return 0; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1442 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1443 | } |
Damien Miller | d5bf307 | 2000-06-07 21:32:13 +1000 | [diff] [blame] | 1444 | #endif /* USE_LASTLOG */ |