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 | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 159 | #include "ssh.h" |
| 160 | #include "xmalloc.h" |
| 161 | #include "loginrec.h" |
| 162 | |
Damien Miller | e477ef6 | 2000-08-15 10:21:17 +1000 | [diff] [blame^] | 163 | RCSID("$Id: loginrec.c,v 1.20 2000/08/15 00:21:17 djm Exp $"); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 164 | |
| 165 | /** |
| 166 | ** prototypes for helper functions in this file |
| 167 | **/ |
| 168 | |
| 169 | #if HAVE_UTMP_H |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 170 | void set_utmp_time(struct logininfo *li, struct utmp *ut); |
| 171 | void construct_utmp(struct logininfo *li, struct utmp *ut); |
| 172 | #endif |
| 173 | |
| 174 | #ifdef HAVE_UTMPX_H |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 175 | void set_utmpx_time(struct logininfo *li, struct utmpx *ut); |
| 176 | void construct_utmpx(struct logininfo *li, struct utmpx *ut); |
| 177 | #endif |
| 178 | |
| 179 | int utmp_write_entry(struct logininfo *li); |
| 180 | int utmpx_write_entry(struct logininfo *li); |
| 181 | int wtmp_write_entry(struct logininfo *li); |
| 182 | int wtmpx_write_entry(struct logininfo *li); |
| 183 | int lastlog_write_entry(struct logininfo *li); |
| 184 | int syslogin_write_entry(struct logininfo *li); |
| 185 | |
| 186 | int getlast_entry(struct logininfo *li); |
| 187 | int lastlog_get_entry(struct logininfo *li); |
| 188 | int wtmp_get_entry(struct logininfo *li); |
| 189 | int wtmpx_get_entry(struct logininfo *li); |
| 190 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 191 | /* pick the shortest string */ |
| 192 | #define MIN_SIZEOF(s1,s2) ( sizeof(s1) < sizeof(s2) ? sizeof(s1) : sizeof(s2) ) |
| 193 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 194 | /** |
| 195 | ** platform-independent login functions |
| 196 | **/ |
| 197 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 198 | /* login_login(struct logininfo *) -Record a login |
| 199 | * |
| 200 | * Call with a pointer to a struct logininfo initialised with |
| 201 | * login_init_entry() or login_alloc_entry() |
| 202 | * |
| 203 | * Returns: |
| 204 | * >0 if successful |
| 205 | * 0 on failure (will use OpenSSH's logging facilities for diagnostics) |
| 206 | */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 207 | int |
| 208 | login_login (struct logininfo *li) |
| 209 | { |
| 210 | li->type = LTYPE_LOGIN; |
| 211 | return login_write(li); |
| 212 | } |
| 213 | |
| 214 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 215 | /* login_logout(struct logininfo *) - Record a logout |
| 216 | * |
| 217 | * Call as with login_login() |
| 218 | * |
| 219 | * Returns: |
| 220 | * >0 if successful |
| 221 | * 0 on failure (will use OpenSSH's logging facilities for diagnostics) |
| 222 | */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 223 | int |
| 224 | login_logout(struct logininfo *li) |
| 225 | { |
| 226 | li->type = LTYPE_LOGOUT; |
| 227 | return login_write(li); |
| 228 | } |
| 229 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 230 | /* login_get_lastlog_time(int) - Retrieve the last login time |
| 231 | * |
| 232 | * Retrieve the last login time for the given uid. Will try to use the |
| 233 | * system lastlog facilities if they are available, but will fall back |
| 234 | * to looking in wtmp/wtmpx if necessary |
| 235 | * |
| 236 | * Returns: |
| 237 | * 0 on failure, or if user has never logged in |
| 238 | * Time in seconds from the epoch if successful |
| 239 | * |
| 240 | * Useful preprocessor symbols: |
| 241 | * DISABLE_LASTLOG: If set, *never* even try to retrieve lastlog |
| 242 | * info |
| 243 | * USE_LASTLOG: If set, indicates the presence of system lastlog |
| 244 | * facilities. If this and DISABLE_LASTLOG are not set, |
| 245 | * try to retrieve lastlog information from wtmp/wtmpx. |
| 246 | */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 247 | unsigned int |
| 248 | login_get_lastlog_time(const int uid) |
| 249 | { |
| 250 | struct logininfo li; |
| 251 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 252 | if (login_get_lastlog(&li, uid)) |
| 253 | return li.tv_sec; |
| 254 | else |
| 255 | return 0; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 256 | } |
| 257 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 258 | /* login_get_lastlog(struct logininfo *, int) - Retrieve a lastlog entry |
| 259 | * |
| 260 | * Retrieve a logininfo structure populated (only partially) with |
| 261 | * information from the system lastlog data, or from wtmp/wtmpx if no |
| 262 | * system lastlog information exists. |
| 263 | * |
| 264 | * Note this routine must be given a pre-allocated logininfo. |
| 265 | * |
| 266 | * Returns: |
| 267 | * >0: A pointer to your struct logininfo if successful |
| 268 | * 0 on failure (will use OpenSSH's logging facilities for diagnostics) |
| 269 | * |
| 270 | */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 271 | struct logininfo * |
| 272 | login_get_lastlog(struct logininfo *li, const int uid) |
| 273 | { |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 274 | struct passwd *pw; |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 275 | |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 276 | memset(li, '\0', sizeof(*li)); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 277 | li->uid = uid; |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 278 | |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 279 | /* |
| 280 | * If we don't have a 'real' lastlog, we need the username to |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 281 | * reliably search wtmp(x) for the last login (see |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 282 | * wtmp_get_entry().) |
| 283 | */ |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 284 | pw = getpwuid(uid); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 285 | if (pw == NULL) |
| 286 | fatal("login_get_lastlog: Cannot find account for uid %i", uid); |
| 287 | |
andre | 98cabe0 | 2000-06-19 09:11:30 +0000 | [diff] [blame] | 288 | /* No MIN_SIZEOF here - we absolutely *must not* truncate the |
| 289 | * username */ |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 290 | strlcpy(li->username, pw->pw_name, sizeof(li->username)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 291 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 292 | if (getlast_entry(li)) |
| 293 | return li; |
| 294 | else |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 295 | return NULL; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 296 | } |
| 297 | |
| 298 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 299 | /* login_alloc_entry(int, char*, char*, char*) - Allocate and initialise |
| 300 | * a logininfo structure |
| 301 | * |
| 302 | * This function creates a new struct logininfo, a data structure |
| 303 | * meant to carry the information required to portably record login info. |
| 304 | * |
| 305 | * Returns a pointer to a newly created struct logininfo. If memory |
| 306 | * allocation fails, the program halts. |
| 307 | */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 308 | struct |
| 309 | logininfo *login_alloc_entry(int pid, const char *username, |
| 310 | const char *hostname, const char *line) |
| 311 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 312 | struct logininfo *newli; |
| 313 | |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 314 | newli = (struct logininfo *) xmalloc (sizeof(*newli)); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 315 | (void)login_init_entry(newli, pid, username, hostname, line); |
| 316 | return newli; |
| 317 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 318 | |
| 319 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 320 | /* login_free_entry(struct logininfo *) - free struct memory */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 321 | void |
| 322 | login_free_entry(struct logininfo *li) |
| 323 | { |
| 324 | xfree(li); |
| 325 | } |
| 326 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 327 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 328 | /* login_init_entry(struct logininfo *, int, char*, char*, char*) |
| 329 | * - initialise a struct logininfo |
| 330 | * |
| 331 | * Populates a new struct logininfo, a data structure meant to carry |
| 332 | * the information required to portably record login info. |
| 333 | * |
| 334 | * Returns: 1 |
| 335 | */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 336 | int |
| 337 | login_init_entry(struct logininfo *li, int pid, const char *username, |
| 338 | const char *hostname, const char *line) |
| 339 | { |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 340 | struct passwd *pw; |
| 341 | |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 342 | memset(li, 0, sizeof(*li)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 343 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 344 | li->pid = pid; |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 345 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 346 | /* set the line information */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 347 | if (line) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 348 | line_fullname(li->line, line, sizeof(li->line)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 349 | |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 350 | if (username) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 351 | strlcpy(li->username, username, sizeof(li->username)); |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 352 | pw = getpwnam(li->username); |
| 353 | if (pw == NULL) |
| 354 | fatal("login_init_entry: Cannot find user \"%s\"", li->username); |
| 355 | li->uid = pw->pw_uid; |
| 356 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 357 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 358 | if (hostname) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 359 | strlcpy(li->hostname, hostname, sizeof(li->hostname)); |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 360 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 361 | return 1; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 362 | } |
| 363 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 364 | /* login_set_current_time(struct logininfo *) - set the current time |
| 365 | * |
| 366 | * Set the current time in a logininfo structure. This function is |
| 367 | * meant to eliminate the need to deal with system dependencies for |
| 368 | * time handling. |
| 369 | */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 370 | void |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 371 | login_set_current_time(struct logininfo *li) |
| 372 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 373 | struct timeval tv; |
| 374 | |
| 375 | gettimeofday(&tv, NULL); |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 376 | |
| 377 | li->tv_sec = tv.tv_sec; |
| 378 | li->tv_usec = tv.tv_usec; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 379 | } |
| 380 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 381 | /* copy a sockaddr_* into our logininfo */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 382 | void |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 383 | login_set_addr(struct logininfo *li, const struct sockaddr *sa, |
| 384 | const unsigned int sa_size) |
| 385 | { |
| 386 | unsigned int bufsize = sa_size; |
| 387 | |
| 388 | /* make sure we don't overrun our union */ |
| 389 | if (sizeof(li->hostaddr) < sa_size) |
| 390 | bufsize = sizeof(li->hostaddr); |
| 391 | |
| 392 | memcpy((void *)&(li->hostaddr.sa), (const void *)sa, bufsize); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 393 | } |
| 394 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 395 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 396 | /** |
| 397 | ** login_write: Call low-level recording functions based on autoconf |
| 398 | ** results |
| 399 | **/ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 400 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 401 | login_write (struct logininfo *li) |
| 402 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 403 | if ((int)geteuid() != 0) { |
| 404 | log("Attempt to write login records by non-root user (aborting)"); |
| 405 | return 1; |
| 406 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 407 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 408 | /* set the timestamp */ |
| 409 | login_set_current_time(li); |
| 410 | #ifdef USE_LOGIN |
| 411 | syslogin_write_entry(li); |
| 412 | #endif |
| 413 | #ifdef USE_LASTLOG |
| 414 | if (li->type == LTYPE_LOGIN) { |
| 415 | lastlog_write_entry(li); |
| 416 | } |
| 417 | #endif |
| 418 | #ifdef USE_UTMP |
| 419 | utmp_write_entry(li); |
| 420 | #endif |
| 421 | #ifdef USE_WTMP |
| 422 | wtmp_write_entry(li); |
| 423 | #endif |
| 424 | #ifdef USE_UTMPX |
| 425 | utmpx_write_entry(li); |
| 426 | #endif |
| 427 | #ifdef USE_WTMPX |
| 428 | wtmpx_write_entry(li); |
| 429 | #endif |
| 430 | return 0; |
| 431 | } |
| 432 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 433 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 434 | ** getlast_entry: Call low-level functions to retrieve the last login |
| 435 | ** time. |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 436 | **/ |
| 437 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 438 | /* take the uid in li and return the last login time */ |
| 439 | int |
| 440 | getlast_entry(struct logininfo *li) |
| 441 | { |
| 442 | #ifdef USE_LASTLOG |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 443 | return(lastlog_get_entry(li)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 444 | #else /* !USE_LASTLOG */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 445 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 446 | #ifdef DISABLE_LASTLOG |
andre | ecaabf1 | 2000-06-12 22:21:44 +0000 | [diff] [blame] | 447 | /* On some systems we shouldn't even try to obtain last login |
| 448 | * time, e.g. AIX */ |
| 449 | return 0; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 450 | # else /* DISABLE_LASTLOG */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 451 | /* Try to retrieve the last login time from wtmp */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 452 | # 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] | 453 | /* retrieve last login time from utmp */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 454 | return (wtmp_get_entry(li)); |
| 455 | # 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] | 456 | /* If wtmp isn't available, try wtmpx */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 457 | # 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] | 458 | /* retrieve last login time from utmpx */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 459 | return (wtmpx_get_entry(li)); |
| 460 | # else |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 461 | /* Give up: No means of retrieving last login time */ |
| 462 | return 0; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 463 | # endif /* USE_WTMPX && (HAVE_TIME_IN_UTMPX || HAVE_TV_IN_UTMPX) */ |
| 464 | # endif /* USE_WTMP && (HAVE_TIME_IN_UTMP || HAVE_TV_IN_UTMP) */ |
| 465 | # endif /* DISABLE_LASTLOG */ |
| 466 | #endif /* USE_LASTLOG */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 467 | } |
| 468 | |
| 469 | |
| 470 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 471 | /* |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 472 | * 'line' string utility functions |
| 473 | * |
| 474 | * These functions process the 'line' string into one of three forms: |
| 475 | * |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 476 | * 1. The full filename (including '/dev') |
| 477 | * 2. The stripped name (excluding '/dev') |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 478 | * 3. The abbreviated name (e.g. /dev/ttyp00 -> yp00 |
| 479 | * /dev/pts/1 -> ts/1 ) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 480 | * |
| 481 | * Form 3 is used on some systems to identify a .tmp.? entry when |
| 482 | * attempting to remove it. Typically both addition and removal is |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 483 | * performed by one application - say, sshd - so as long as the choice |
| 484 | * uniquely identifies a terminal it's ok. |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 485 | */ |
| 486 | |
| 487 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 488 | /* line_fullname(): add the leading '/dev/' if it doesn't exist make |
| 489 | * sure dst has enough space, if not just copy src (ugh) */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 490 | char * |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 491 | line_fullname(char *dst, const char *src, int dstsize) |
| 492 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 493 | memset(dst, '\0', dstsize); |
| 494 | if ((strncmp(src, "/dev/", 5) == 0) || (dstsize < (strlen(src) + 5))) |
| 495 | strlcpy(dst, src, dstsize); |
| 496 | else { |
Damien Miller | 1a13225 | 2000-06-13 21:23:17 +1000 | [diff] [blame] | 497 | strlcpy(dst, "/dev/", dstsize); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 498 | strlcat(dst, src, dstsize); |
| 499 | } |
| 500 | return dst; |
| 501 | } |
| 502 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 503 | /* line_stripname(): strip the leading '/dev' if it exists, return dst */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 504 | char * |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 505 | line_stripname(char *dst, const char *src, int dstsize) |
| 506 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 507 | memset(dst, '\0', dstsize); |
| 508 | if (strncmp(src, "/dev/", 5) == 0) |
| 509 | strlcpy(dst, &src[5], dstsize); |
| 510 | else |
| 511 | strlcpy(dst, src, dstsize); |
| 512 | return dst; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 513 | } |
| 514 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 515 | /* line_abbrevname(): Return the abbreviated (usually four-character) |
| 516 | * form of the line (Just use the last <dstsize> characters of the |
| 517 | * full name.) |
| 518 | * |
| 519 | * NOTE: use strncpy because we do NOT necessarily want zero |
| 520 | * termination */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 521 | char * |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 522 | line_abbrevname(char *dst, const char *src, int dstsize) |
| 523 | { |
| 524 | size_t len; |
| 525 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 526 | memset(dst, '\0', dstsize); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 527 | |
Damien Miller | 8e81ed3 | 2000-07-01 13:17:42 +1000 | [diff] [blame] | 528 | /* Always skip prefix if present */ |
| 529 | if (strncmp(src, "/dev/", 5) == 0) |
| 530 | src += 5; |
| 531 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 532 | len = strlen(src); |
| 533 | |
Damien Miller | 8e81ed3 | 2000-07-01 13:17:42 +1000 | [diff] [blame] | 534 | if (len > 0) { |
| 535 | if (((int)len - dstsize) > 0) |
| 536 | src += ((int)len - dstsize); |
| 537 | |
| 538 | /* note: _don't_ change this to strlcpy */ |
| 539 | strncpy(dst, src, (size_t)dstsize); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 540 | } |
| 541 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 542 | return dst; |
| 543 | } |
| 544 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 545 | /** |
| 546 | ** utmp utility functions |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 547 | ** |
| 548 | ** These functions manipulate struct utmp, taking system differences |
| 549 | ** into account. |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 550 | **/ |
| 551 | |
| 552 | #if defined(USE_UTMP) || defined (USE_WTMP) || defined (USE_LOGIN) |
| 553 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 554 | /* build the utmp structure */ |
| 555 | void |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 556 | set_utmp_time(struct logininfo *li, struct utmp *ut) |
| 557 | { |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 558 | # ifdef HAVE_TV_IN_UTMP |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 559 | ut->ut_tv.tv_sec = li->tv_sec; |
| 560 | ut->ut_tv.tv_usec = li->tv_usec; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 561 | # else |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 562 | # ifdef HAVE_TIME_IN_UTMP |
| 563 | ut->ut_time = li->tv_sec; |
| 564 | # endif |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 565 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 566 | } |
| 567 | |
| 568 | void |
| 569 | construct_utmp(struct logininfo *li, |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 570 | struct utmp *ut) |
| 571 | { |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 572 | memset(ut, '\0', sizeof(*ut)); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 573 | |
| 574 | /* First fill out fields used for both logins and logouts */ |
| 575 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 576 | # ifdef HAVE_ID_IN_UTMP |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 577 | line_abbrevname(ut->ut_id, li->line, sizeof(ut->ut_id)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 578 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 579 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 580 | # ifdef HAVE_TYPE_IN_UTMP |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 581 | /* This is done here to keep utmp constants out of struct logininfo */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 582 | switch (li->type) { |
| 583 | case LTYPE_LOGIN: |
| 584 | ut->ut_type = USER_PROCESS; |
| 585 | break; |
| 586 | case LTYPE_LOGOUT: |
| 587 | ut->ut_type = DEAD_PROCESS; |
| 588 | break; |
| 589 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 590 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 591 | set_utmp_time(li, ut); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 592 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 593 | line_stripname(ut->ut_line, li->line, sizeof(ut->ut_line)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 594 | |
| 595 | # ifdef HAVE_PID_IN_UTMP |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 596 | ut->ut_pid = li->pid; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 597 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 598 | |
| 599 | /* If we're logging out, leave all other fields blank */ |
| 600 | if (li->type == LTYPE_LOGOUT) |
| 601 | return; |
| 602 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 603 | /* |
| 604 | * These fields are only used when logging in, and are blank |
| 605 | * for logouts. |
| 606 | */ |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 607 | |
| 608 | /* Use strncpy because we don't necessarily want null termination */ |
Damien Miller | 7a0e5dc | 2000-07-11 12:15:54 +1000 | [diff] [blame] | 609 | 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] | 610 | # ifdef HAVE_HOST_IN_UTMP |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 611 | 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] | 612 | # endif |
| 613 | # ifdef HAVE_ADDR_IN_UTMP |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 614 | /* this is just a 32-bit IP address */ |
| 615 | if (li->hostaddr.sa.sa_family == AF_INET) |
| 616 | ut->ut_addr = li->hostaddr.sa_in.sin_addr.s_addr; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 617 | # endif |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 618 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 619 | #endif /* USE_UTMP || USE_WTMP || USE_LOGIN */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 620 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 621 | /** |
| 622 | ** utmpx utility functions |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 623 | ** |
| 624 | ** These functions manipulate struct utmpx, accounting for system |
| 625 | ** variations. |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 626 | **/ |
| 627 | |
| 628 | #if defined(USE_UTMPX) || defined (USE_WTMPX) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 629 | /* build the utmpx structure */ |
| 630 | void |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 631 | set_utmpx_time(struct logininfo *li, struct utmpx *utx) |
| 632 | { |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 633 | # ifdef HAVE_TV_IN_UTMPX |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 634 | utx->ut_tv.tv_sec = li->tv_sec; |
| 635 | utx->ut_tv.tv_usec = li->tv_usec; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 636 | # else /* HAVE_TV_IN_UTMPX */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 637 | # ifdef HAVE_TIME_IN_UTMPX |
| 638 | utx->ut_time = li->tv_sec; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 639 | # endif /* HAVE_TIME_IN_UTMPX */ |
| 640 | # endif /* HAVE_TV_IN_UTMPX */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 641 | } |
| 642 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 643 | void |
| 644 | construct_utmpx(struct logininfo *li, struct utmpx *utx) |
| 645 | { |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 646 | memset(utx, '\0', sizeof(*utx)); |
Damien Miller | 8e81ed3 | 2000-07-01 13:17:42 +1000 | [diff] [blame] | 647 | # ifdef HAVE_ID_IN_UTMPX |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 648 | line_abbrevname(utx->ut_id, li->line, sizeof(utx->ut_id)); |
Damien Miller | 8e81ed3 | 2000-07-01 13:17:42 +1000 | [diff] [blame] | 649 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 650 | |
| 651 | /* this is done here to keep utmp constants out of loginrec.h */ |
| 652 | switch (li->type) { |
| 653 | case LTYPE_LOGIN: |
| 654 | utx->ut_type = USER_PROCESS; |
| 655 | break; |
| 656 | case LTYPE_LOGOUT: |
| 657 | utx->ut_type = DEAD_PROCESS; |
| 658 | break; |
| 659 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 660 | line_stripname(utx->ut_line, li->line, sizeof(utx->ut_line)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 661 | set_utmpx_time(li, utx); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 662 | utx->ut_pid = li->pid; |
| 663 | |
| 664 | if (li->type == LTYPE_LOGOUT) |
| 665 | return; |
| 666 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 667 | /* |
| 668 | * These fields are only used when logging in, and are blank |
| 669 | * for logouts. |
| 670 | */ |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 671 | |
| 672 | /* strncpy(): Don't necessarily want null termination */ |
Damien Miller | 7a0e5dc | 2000-07-11 12:15:54 +1000 | [diff] [blame] | 673 | 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] | 674 | # ifdef HAVE_HOST_IN_UTMPX |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 675 | 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] | 676 | # endif |
| 677 | # ifdef HAVE_ADDR_IN_UTMPX |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 678 | /* FIXME: (ATL) not supported yet */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 679 | # endif |
| 680 | # ifdef HAVE_SYSLEN_IN_UTMPX |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 681 | /* ut_syslen is the length of the utx_host string */ |
| 682 | utx->ut_syslen = MIN(strlen(li->hostname), sizeof(utx->ut_host)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 683 | # endif |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 684 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 685 | #endif /* USE_UTMPX || USE_WTMPX */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 686 | |
| 687 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 688 | ** Low-level utmp functions |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 689 | **/ |
| 690 | |
| 691 | /* FIXME: (ATL) utmp_write_direct needs testing */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 692 | #ifdef USE_UTMP |
| 693 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 694 | /* if we can, use pututline() etc. */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 695 | # if !defined(DISABLE_PUTUTLINE) && defined(HAVE_SETUTENT) && \ |
| 696 | defined(HAVE_PUTUTLINE) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 697 | # define UTMP_USE_LIBRARY |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 698 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 699 | |
| 700 | |
| 701 | /* write a utmp entry with the system's help (pututline() and pals) */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 702 | # ifdef UTMP_USE_LIBRARY |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 703 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 704 | utmp_write_library(struct logininfo *li, struct utmp *ut) |
| 705 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 706 | setutent(); |
| 707 | pututline(ut); |
| 708 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 709 | # ifdef HAVE_ENDUTENT |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 710 | endutent(); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 711 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 712 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 713 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 714 | # else /* UTMP_USE_LIBRARY */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 715 | |
| 716 | /* write a utmp entry direct to the file */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 717 | /* This is a slightly modification of code in OpenBSD's login.c */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 718 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 719 | utmp_write_direct(struct logininfo *li, struct utmp *ut) |
| 720 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 721 | struct utmp old_ut; |
| 722 | register int fd; |
| 723 | int tty; |
| 724 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 725 | /* FIXME: (ATL) ttyslot() needs local implementation */ |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 726 | |
| 727 | #if defined(SUNOS4) && defined(HAVE_GETTTYENT) |
| 728 | register struct ttyent *ty; |
| 729 | |
| 730 | tty=0; |
| 731 | |
| 732 | setttyent(); |
| 733 | while ((struct ttyent *)0 != (ty = getttyent())) { |
| 734 | tty++; |
| 735 | if (!strncmp(ty->ty_name, ut->ut_line, sizeof(ut->ut_line))) |
| 736 | break; |
| 737 | } |
| 738 | endttyent(); |
| 739 | |
| 740 | if((struct ttyent *)0 == ty) { |
| 741 | log("utmp_write_entry: tty not found"); |
| 742 | return(1); |
| 743 | } |
| 744 | #else /* FIXME */ |
| 745 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 746 | tty = ttyslot(); /* seems only to work for /dev/ttyp? style names */ |
| 747 | |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 748 | #endif /* SUNOS4 && HAVE_GETTTYENT */ |
| 749 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 750 | if (tty > 0 && (fd = open(UTMP_FILE, O_RDWR|O_CREAT, 0644)) >= 0) { |
| 751 | (void)lseek(fd, (off_t)(tty * sizeof(struct utmp)), SEEK_SET); |
| 752 | /* |
| 753 | * Prevent luser from zero'ing out ut_host. |
| 754 | * 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] | 755 | * and ut_line and ut_name match, preserve the old ut_line. |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 756 | */ |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 757 | if (atomicio(read, fd, &old_ut, sizeof(old_ut)) == sizeof(old_ut) && |
| 758 | (ut->ut_host[0] == '\0') && (old_ut.ut_host[0] != '\0') && |
| 759 | (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] | 760 | (strncmp(old_ut.ut_name, ut->ut_name, sizeof(ut->ut_name)) == 0)) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 761 | (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] | 762 | } |
| 763 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 764 | (void)lseek(fd, (off_t)(tty * sizeof(struct utmp)), SEEK_SET); |
Damien Miller | 36ccb5c | 2000-08-09 16:34:27 +1000 | [diff] [blame] | 765 | if (atomicio(write, fd, ut, sizeof(*ut)) != sizeof(*ut)) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 766 | log("utmp_write_direct: error writing %s: %s", |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 767 | UTMP_FILE, strerror(errno)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 768 | |
| 769 | (void)close(fd); |
| 770 | return 1; |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 771 | } else { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 772 | return 0; |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 773 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 774 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 775 | # endif /* UTMP_USE_LIBRARY */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 776 | |
| 777 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 778 | utmp_perform_login(struct logininfo *li) |
| 779 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 780 | struct utmp ut; |
| 781 | |
| 782 | construct_utmp(li, &ut); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 783 | # ifdef UTMP_USE_LIBRARY |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 784 | if (!utmp_write_library(li, &ut)) { |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 785 | log("utmp_perform_login: utmp_write_library() failed"); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 786 | return 0; |
| 787 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 788 | # else |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 789 | if (!utmp_write_direct(li, &ut)) { |
| 790 | log("utmp_perform_login: utmp_write_direct() failed"); |
| 791 | return 0; |
| 792 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 793 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 794 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 795 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 796 | |
| 797 | |
| 798 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 799 | utmp_perform_logout(struct logininfo *li) |
| 800 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 801 | struct utmp ut; |
| 802 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 803 | construct_utmp(li, &ut); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 804 | # ifdef UTMP_USE_LIBRARY |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 805 | if (!utmp_write_library(li, &ut)) { |
| 806 | log("utmp_perform_logout: utmp_write_library() failed"); |
| 807 | return 0; |
| 808 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 809 | # else |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 810 | if (!utmp_write_direct(li, &ut)) { |
| 811 | log("utmp_perform_logout: utmp_write_direct() failed"); |
| 812 | return 0; |
| 813 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 814 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 815 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 816 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 817 | |
| 818 | |
| 819 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 820 | utmp_write_entry(struct logininfo *li) |
| 821 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 822 | switch(li->type) { |
| 823 | case LTYPE_LOGIN: |
| 824 | return utmp_perform_login(li); |
| 825 | |
| 826 | case LTYPE_LOGOUT: |
| 827 | return utmp_perform_logout(li); |
| 828 | |
| 829 | default: |
| 830 | log("utmp_write_entry: invalid type field"); |
| 831 | return 0; |
| 832 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 833 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 834 | #endif /* USE_UTMP */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 835 | |
| 836 | |
| 837 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 838 | ** Low-level utmpx functions |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 839 | **/ |
| 840 | |
| 841 | /* not much point if we don't want utmpx entries */ |
| 842 | #ifdef USE_UTMPX |
| 843 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 844 | /* if we have the wherewithall, use pututxline etc. */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 845 | # if !defined(DISABLE_PUTUTXLINE) && defined(HAVE_SETUTXENT) && \ |
| 846 | defined(HAVE_PUTUTXLINE) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 847 | # define UTMPX_USE_LIBRARY |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 848 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 849 | |
| 850 | |
| 851 | /* write a utmpx entry with the system's help (pututxline() and pals) */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 852 | # ifdef UTMPX_USE_LIBRARY |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 853 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 854 | utmpx_write_library(struct logininfo *li, struct utmpx *utx) |
| 855 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 856 | setutxent(); |
| 857 | pututxline(utx); |
| 858 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 859 | # ifdef HAVE_ENDUTXENT |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 860 | endutxent(); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 861 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 862 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 863 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 864 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 865 | # else /* UTMPX_USE_LIBRARY */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 866 | |
| 867 | /* write a utmp entry direct to the file */ |
| 868 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 869 | utmpx_write_direct(struct logininfo *li, struct utmpx *utx) |
| 870 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 871 | log("utmpx_write_direct: not implemented!"); |
| 872 | return 0; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 873 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 874 | # endif /* UTMPX_USE_LIBRARY */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 875 | |
| 876 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 877 | utmpx_perform_login(struct logininfo *li) |
| 878 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 879 | struct utmpx utx; |
| 880 | |
| 881 | construct_utmpx(li, &utx); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 882 | # ifdef UTMPX_USE_LIBRARY |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 883 | if (!utmpx_write_library(li, &utx)) { |
| 884 | log("utmpx_perform_login: utmp_write_library() failed"); |
| 885 | return 0; |
| 886 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 887 | # else |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 888 | if (!utmpx_write_direct(li, &ut)) { |
| 889 | log("utmpx_perform_login: utmp_write_direct() failed"); |
| 890 | return 0; |
| 891 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 892 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 893 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 894 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 895 | |
| 896 | |
| 897 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 898 | utmpx_perform_logout(struct logininfo *li) |
| 899 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 900 | struct utmpx utx; |
| 901 | |
| 902 | memset(&utx, '\0', sizeof(utx)); |
| 903 | set_utmpx_time(li, &utx); |
| 904 | line_stripname(utx.ut_line, li->line, sizeof(utx.ut_line)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 905 | # ifdef HAVE_ID_IN_UTMPX |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 906 | line_abbrevname(utx.ut_id, li->line, sizeof(utx.ut_id)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 907 | # endif |
| 908 | # ifdef HAVE_TYPE_IN_UTMPX |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 909 | utx.ut_type = DEAD_PROCESS; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 910 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 911 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 912 | # ifdef UTMPX_USE_LIBRARY |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 913 | utmpx_write_library(li, &utx); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 914 | # else |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 915 | utmpx_write_direct(li, &utx); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 916 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 917 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 918 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 919 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 920 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 921 | utmpx_write_entry(struct logininfo *li) |
| 922 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 923 | switch(li->type) { |
| 924 | case LTYPE_LOGIN: |
| 925 | return utmpx_perform_login(li); |
| 926 | case LTYPE_LOGOUT: |
| 927 | return utmpx_perform_logout(li); |
| 928 | default: |
| 929 | log("utmpx_write_entry: invalid type field"); |
| 930 | return 0; |
| 931 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 932 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 933 | #endif /* USE_UTMPX */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 934 | |
| 935 | |
| 936 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 937 | ** Low-level wtmp functions |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 938 | **/ |
| 939 | |
| 940 | #ifdef USE_WTMP |
| 941 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 942 | /* write a wtmp entry direct to the end of the file */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 943 | /* This is a slight modification of code in OpenBSD's logwtmp.c */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 944 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 945 | wtmp_write(struct logininfo *li, struct utmp *ut) |
| 946 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 947 | struct stat buf; |
| 948 | int fd, ret = 1; |
| 949 | |
| 950 | if ((fd = open(WTMP_FILE, O_WRONLY|O_APPEND, 0)) < 0) { |
| 951 | log("wtmp_write: problem writing %s: %s", |
| 952 | WTMP_FILE, strerror(errno)); |
| 953 | return 0; |
| 954 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 955 | if (fstat(fd, &buf) == 0) |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 956 | if (atomicio(write, fd, ut, sizeof(*ut)) != sizeof(*ut)) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 957 | ftruncate(fd, buf.st_size); |
| 958 | log("wtmp_write: problem writing %s: %s", |
| 959 | WTMP_FILE, strerror(errno)); |
| 960 | ret = 0; |
| 961 | } |
| 962 | (void)close(fd); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 963 | return ret; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 964 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 965 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 966 | static int |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 967 | wtmp_perform_login(struct logininfo *li) |
| 968 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 969 | struct utmp ut; |
| 970 | |
| 971 | construct_utmp(li, &ut); |
| 972 | return wtmp_write(li, &ut); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 973 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 974 | |
| 975 | |
| 976 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 977 | wtmp_perform_logout(struct logininfo *li) |
| 978 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 979 | struct utmp ut; |
| 980 | |
| 981 | construct_utmp(li, &ut); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 982 | return wtmp_write(li, &ut); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 983 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 984 | |
| 985 | |
| 986 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 987 | wtmp_write_entry(struct logininfo *li) |
| 988 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 989 | switch(li->type) { |
| 990 | case LTYPE_LOGIN: |
| 991 | return wtmp_perform_login(li); |
| 992 | case LTYPE_LOGOUT: |
| 993 | return wtmp_perform_logout(li); |
| 994 | default: |
| 995 | log("wtmp_write_entry: invalid type field"); |
| 996 | return 0; |
| 997 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 998 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 999 | |
| 1000 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1001 | /* Notes on fetching login data from wtmp/wtmpx |
| 1002 | * |
| 1003 | * Logouts are usually recorded with (amongst other things) a blank |
| 1004 | * username on a given tty line. However, some systems (HP-UX is one) |
| 1005 | * leave all fields set, but change the ut_type field to DEAD_PROCESS. |
| 1006 | * |
| 1007 | * Since we're only looking for logins here, we know that the username |
| 1008 | * must be set correctly. On systems that leave it in, we check for |
| 1009 | * ut_type==USER_PROCESS (indicating a login.) |
| 1010 | * |
| 1011 | * Portability: Some systems may set something other than USER_PROCESS |
| 1012 | * to indicate a login process. I don't know of any as I write. Also, |
| 1013 | * it's possible that some systems may both leave the username in |
| 1014 | * place and not have ut_type. |
| 1015 | */ |
| 1016 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1017 | /* return true if this wtmp entry indicates a login */ |
| 1018 | static int |
| 1019 | wtmp_islogin(struct logininfo *li, struct utmp *ut) |
| 1020 | { |
Damien Miller | 7a0e5dc | 2000-07-11 12:15:54 +1000 | [diff] [blame] | 1021 | if (strncmp(li->username, ut->ut_name, |
| 1022 | MIN_SIZEOF(li->username, ut->ut_name)) == 0) { |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1023 | # ifdef HAVE_TYPE_IN_UTMP |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1024 | if (ut->ut_type & USER_PROCESS) |
| 1025 | return 1; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1026 | # else |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1027 | return 1; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1028 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1029 | } |
| 1030 | return 0; |
| 1031 | } |
| 1032 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1033 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1034 | wtmp_get_entry(struct logininfo *li) |
| 1035 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1036 | struct stat st; |
| 1037 | struct utmp ut; |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1038 | int fd, found=0; |
| 1039 | |
| 1040 | /* Clear the time entries in our logininfo */ |
| 1041 | li->tv_sec = li->tv_usec = 0; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1042 | |
| 1043 | if ((fd = open(WTMP_FILE, O_RDONLY)) < 0) { |
| 1044 | log("wtmp_get_entry: problem opening %s: %s", |
| 1045 | WTMP_FILE, strerror(errno)); |
| 1046 | return 0; |
| 1047 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1048 | if (fstat(fd, &st) != 0) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1049 | log("wtmp_get_entry: couldn't stat %s: %s", |
| 1050 | WTMP_FILE, strerror(errno)); |
| 1051 | close(fd); |
| 1052 | return 0; |
| 1053 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1054 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1055 | /* Seek to the start of the last struct utmp */ |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 1056 | if (lseek(fd, (off_t)(0 - sizeof(struct utmp)), SEEK_END) == -1) { |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1057 | /* Looks like we've got a fresh wtmp file */ |
| 1058 | close(fd); |
| 1059 | return 0; |
| 1060 | } |
| 1061 | |
| 1062 | while (!found) { |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 1063 | if (atomicio(read, fd, &ut, sizeof(ut)) != sizeof(ut)) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1064 | log("wtmp_get_entry: read of %s failed: %s", |
| 1065 | WTMP_FILE, strerror(errno)); |
| 1066 | close (fd); |
| 1067 | return 0; |
| 1068 | } |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1069 | if ( wtmp_islogin(li, &ut) ) { |
| 1070 | found = 1; |
| 1071 | /* We've already checked for a time in struct |
| 1072 | * utmp, in login_getlast(). */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1073 | # ifdef HAVE_TIME_IN_UTMP |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1074 | li->tv_sec = ut.ut_time; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1075 | # else |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1076 | # if HAVE_TV_IN_UTMP |
| 1077 | li->tv_sec = ut.ut_tv.tv_sec; |
| 1078 | # endif |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1079 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1080 | line_fullname(li->line, ut.ut_line, |
| 1081 | MIN_SIZEOF(li->line, ut.ut_line)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1082 | # ifdef HAVE_HOST_IN_UTMP |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1083 | strlcpy(li->hostname, ut.ut_host, |
| 1084 | MIN_SIZEOF(li->hostname, ut.ut_host)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1085 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1086 | continue; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1087 | } |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1088 | /* Seek back 2 x struct utmp */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1089 | if (lseek(fd, (off_t)(0-2*sizeof(struct utmp)), SEEK_CUR) == -1) { |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1090 | /* We've found the start of the file, so quit */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1091 | close (fd); |
| 1092 | return 0; |
| 1093 | } |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1094 | } |
| 1095 | |
| 1096 | /* We found an entry. Tidy up and return */ |
| 1097 | close(fd); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1098 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1099 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1100 | # endif /* USE_WTMP */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1101 | |
| 1102 | |
| 1103 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1104 | ** Low-level wtmpx functions |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1105 | **/ |
| 1106 | |
| 1107 | #ifdef USE_WTMPX |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1108 | /* write a wtmpx entry direct to the end of the file */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1109 | /* This is a slight modification of code in OpenBSD's logwtmp.c */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1110 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1111 | wtmpx_write(struct logininfo *li, struct utmpx *utx) |
| 1112 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1113 | struct stat buf; |
| 1114 | int fd, ret = 1; |
| 1115 | |
| 1116 | if ((fd = open(WTMPX_FILE, O_WRONLY|O_APPEND, 0)) < 0) { |
| 1117 | log("wtmpx_write: problem opening %s: %s", |
| 1118 | WTMPX_FILE, strerror(errno)); |
| 1119 | return 0; |
| 1120 | } |
| 1121 | |
| 1122 | if (fstat(fd, &buf) == 0) |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 1123 | if (atomicio(write, fd, utx, sizeof(*utx)) != sizeof(*utx)) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1124 | ftruncate(fd, buf.st_size); |
| 1125 | log("wtmpx_write: problem writing %s: %s", |
| 1126 | WTMPX_FILE, strerror(errno)); |
| 1127 | ret = 0; |
| 1128 | } |
| 1129 | (void)close(fd); |
| 1130 | |
| 1131 | return ret; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1132 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1133 | |
| 1134 | |
| 1135 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1136 | wtmpx_perform_login(struct logininfo *li) |
| 1137 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1138 | struct utmpx utx; |
| 1139 | |
| 1140 | construct_utmpx(li, &utx); |
| 1141 | return wtmpx_write(li, &utx); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1142 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1143 | |
| 1144 | |
| 1145 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1146 | wtmpx_perform_logout(struct logininfo *li) |
| 1147 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1148 | struct utmpx utx; |
| 1149 | |
| 1150 | construct_utmpx(li, &utx); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1151 | return wtmpx_write(li, &utx); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1152 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1153 | |
| 1154 | |
| 1155 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1156 | wtmpx_write_entry(struct logininfo *li) |
| 1157 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1158 | switch(li->type) { |
| 1159 | case LTYPE_LOGIN: |
| 1160 | return wtmpx_perform_login(li); |
| 1161 | case LTYPE_LOGOUT: |
| 1162 | return wtmpx_perform_logout(li); |
| 1163 | default: |
| 1164 | log("wtmpx_write_entry: invalid type field"); |
| 1165 | return 0; |
| 1166 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1167 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1168 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1169 | /* Please see the notes above wtmp_islogin() for information about the |
| 1170 | next two functions */ |
| 1171 | |
| 1172 | /* Return true if this wtmpx entry indicates a login */ |
| 1173 | static int |
| 1174 | wtmpx_islogin(struct logininfo *li, struct utmpx *utx) |
| 1175 | { |
Damien Miller | 7a0e5dc | 2000-07-11 12:15:54 +1000 | [diff] [blame] | 1176 | if ( strncmp(li->username, utx->ut_name, |
| 1177 | MIN_SIZEOF(li->username, utx->ut_name)) == 0 ) { |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1178 | # ifdef HAVE_TYPE_IN_UTMPX |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1179 | if (utx->ut_type == USER_PROCESS) |
| 1180 | return 1; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1181 | # else |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1182 | return 1; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1183 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1184 | } |
| 1185 | return 0; |
| 1186 | } |
| 1187 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1188 | |
| 1189 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1190 | wtmpx_get_entry(struct logininfo *li) |
| 1191 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1192 | struct stat st; |
| 1193 | struct utmpx utx; |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1194 | int fd, found=0; |
| 1195 | |
| 1196 | /* Clear the time entries */ |
| 1197 | li->tv_sec = li->tv_usec = 0; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1198 | |
| 1199 | if ((fd = open(WTMPX_FILE, O_RDONLY)) < 0) { |
| 1200 | log("wtmpx_get_entry: problem opening %s: %s", |
| 1201 | WTMPX_FILE, strerror(errno)); |
| 1202 | return 0; |
| 1203 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1204 | if (fstat(fd, &st) != 0) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1205 | log("wtmpx_get_entry: couldn't stat %s: %s", |
| 1206 | WTMP_FILE, strerror(errno)); |
| 1207 | close(fd); |
| 1208 | return 0; |
| 1209 | } |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1210 | |
| 1211 | /* Seek to the start of the last struct utmpx */ |
| 1212 | if (lseek(fd, (off_t)(0-sizeof(struct utmpx)), SEEK_END) == -1 ) { |
| 1213 | /* probably a newly rotated wtmpx file */ |
| 1214 | close(fd); |
| 1215 | return 0; |
| 1216 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1217 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1218 | while (!found) { |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 1219 | if (atomicio(read, fd, &utx, sizeof(utx)) != sizeof(utx)) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1220 | log("wtmpx_get_entry: read of %s failed: %s", |
| 1221 | WTMPX_FILE, strerror(errno)); |
| 1222 | close (fd); |
| 1223 | return 0; |
| 1224 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1225 | /* Logouts are recorded as a blank username on a particular line. |
| 1226 | * So, we just need to find the username in struct utmpx */ |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1227 | if ( wtmpx_islogin(li, &utx) ) { |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1228 | # ifdef HAVE_TV_IN_UTMPX |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1229 | li->tv_sec = utx.ut_tv.tv_sec; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1230 | # else |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1231 | # ifdef HAVE_TIME_IN_UTMPX |
| 1232 | li->tv_sec = utx.ut_time; |
| 1233 | # endif |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1234 | # endif |
Damien Miller | 1a13225 | 2000-06-13 21:23:17 +1000 | [diff] [blame] | 1235 | line_fullname(li->line, utx.ut_line, sizeof(li->line)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1236 | # ifdef HAVE_HOST_IN_UTMPX |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1237 | strlcpy(li->hostname, utx.ut_host, |
| 1238 | MIN_SIZEOF(li->hostname, utx.ut_host)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1239 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1240 | continue; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1241 | } |
| 1242 | if (lseek(fd, (off_t)(0-2*sizeof(struct utmpx)), SEEK_CUR) == -1) { |
| 1243 | close (fd); |
| 1244 | return 0; |
| 1245 | } |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1246 | } |
| 1247 | |
| 1248 | close(fd); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1249 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1250 | } |
Damien Miller | d5bf307 | 2000-06-07 21:32:13 +1000 | [diff] [blame] | 1251 | #endif /* USE_WTMPX */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1252 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1253 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1254 | ** Low-level libutil login() functions |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1255 | **/ |
| 1256 | |
| 1257 | #ifdef USE_LOGIN |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1258 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1259 | syslogin_perform_login(struct logininfo *li) |
| 1260 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1261 | struct utmp *ut; |
| 1262 | |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 1263 | if (! (ut = (struct utmp *)malloc(sizeof(*ut)))) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1264 | log("syslogin_perform_login: couldn't malloc()"); |
| 1265 | return 0; |
| 1266 | } |
| 1267 | construct_utmp(li, ut); |
| 1268 | login(ut); |
| 1269 | |
| 1270 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1271 | } |
| 1272 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1273 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1274 | syslogin_perform_logout(struct logininfo *li) |
| 1275 | { |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1276 | # ifdef HAVE_LOGOUT |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1277 | char line[8]; |
| 1278 | |
| 1279 | (void)line_stripname(line, li->line, sizeof(line)); |
| 1280 | |
| 1281 | if (!logout(line)) { |
| 1282 | log("syslogin_perform_logout: logout() returned an error"); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1283 | # ifdef HAVE_LOGWTMP |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1284 | } else { |
| 1285 | logwtmp(line, "", ""); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1286 | # endif |
Damien Miller | 9b6d4ab | 2000-07-02 08:43:18 +1000 | [diff] [blame] | 1287 | } |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1288 | /* FIXME: (ATL - if the need arises) What to do if we have |
| 1289 | * login, but no logout? what if logout but no logwtmp? All |
| 1290 | * routines are in libutil so they should all be there, |
| 1291 | * but... */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1292 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1293 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1294 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1295 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1296 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1297 | syslogin_write_entry(struct logininfo *li) |
| 1298 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1299 | switch (li->type) { |
| 1300 | case LTYPE_LOGIN: |
| 1301 | return syslogin_perform_login(li); |
| 1302 | case LTYPE_LOGOUT: |
| 1303 | return syslogin_perform_logout(li); |
| 1304 | default: |
| 1305 | log("syslogin_write_entry: Invalid type field"); |
| 1306 | return 0; |
| 1307 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1308 | } |
Damien Miller | d5bf307 | 2000-06-07 21:32:13 +1000 | [diff] [blame] | 1309 | #endif /* USE_LOGIN */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1310 | |
| 1311 | /* end of file log-syslogin.c */ |
| 1312 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1313 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1314 | ** Low-level lastlog functions |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1315 | **/ |
| 1316 | |
| 1317 | #ifdef USE_LASTLOG |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1318 | #define LL_FILE 1 |
| 1319 | #define LL_DIR 2 |
| 1320 | #define LL_OTHER 3 |
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 void |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1323 | lastlog_construct(struct logininfo *li, struct lastlog *last) |
| 1324 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1325 | /* clear the structure */ |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 1326 | memset(last, '\0', sizeof(*last)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1327 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1328 | (void)line_stripname(last->ll_line, li->line, sizeof(last->ll_line)); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1329 | strlcpy(last->ll_host, li->hostname, |
| 1330 | MIN_SIZEOF(last->ll_host, li->hostname)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1331 | last->ll_time = li->tv_sec; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1332 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1333 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1334 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1335 | lastlog_filetype(char *filename) |
| 1336 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1337 | struct stat st; |
| 1338 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1339 | if (stat(LASTLOG_FILE, &st) != 0) { |
| 1340 | log("lastlog_perform_login: Couldn't stat %s: %s", LASTLOG_FILE, |
| 1341 | strerror(errno)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1342 | return 0; |
| 1343 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1344 | if (S_ISDIR(st.st_mode)) |
| 1345 | return LL_DIR; |
| 1346 | else if (S_ISREG(st.st_mode)) |
| 1347 | return LL_FILE; |
| 1348 | else |
| 1349 | return LL_OTHER; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1350 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1351 | |
| 1352 | |
| 1353 | /* open the file (using filemode) and seek to the login entry */ |
| 1354 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1355 | lastlog_openseek(struct logininfo *li, int *fd, int filemode) |
| 1356 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1357 | off_t offset; |
| 1358 | int type; |
| 1359 | char lastlog_file[1024]; |
| 1360 | |
| 1361 | type = lastlog_filetype(LASTLOG_FILE); |
| 1362 | switch (type) { |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 1363 | case LL_FILE: |
| 1364 | strlcpy(lastlog_file, LASTLOG_FILE, sizeof(lastlog_file)); |
| 1365 | break; |
| 1366 | case LL_DIR: |
| 1367 | snprintf(lastlog_file, sizeof(lastlog_file), "%s/%s", |
| 1368 | LASTLOG_FILE, li->username); |
| 1369 | break; |
| 1370 | default: |
| 1371 | log("lastlog_openseek: %.100s is not a file or directory!", |
| 1372 | LASTLOG_FILE); |
| 1373 | return 0; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1374 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1375 | |
| 1376 | *fd = open(lastlog_file, filemode); |
| 1377 | if ( *fd < 0) { |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 1378 | debug("lastlog_openseek: Couldn't open %s: %s", |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1379 | lastlog_file, strerror(errno)); |
| 1380 | return 0; |
| 1381 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1382 | |
Damien Miller | e477ef6 | 2000-08-15 10:21:17 +1000 | [diff] [blame^] | 1383 | if (type == LL_FILE) { |
| 1384 | /* find this uid's offset in the lastlog file */ |
| 1385 | offset = (off_t) ( (long)li->uid * sizeof(struct lastlog)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1386 | |
Damien Miller | e477ef6 | 2000-08-15 10:21:17 +1000 | [diff] [blame^] | 1387 | if ( lseek(*fd, offset, SEEK_SET) != offset ) { |
| 1388 | log("lastlog_openseek: %s->lseek(): %s", |
| 1389 | lastlog_file, strerror(errno)); |
| 1390 | return 0; |
| 1391 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1392 | } |
Damien Miller | e477ef6 | 2000-08-15 10:21:17 +1000 | [diff] [blame^] | 1393 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1394 | return 1; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1395 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1396 | |
| 1397 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1398 | lastlog_perform_login(struct logininfo *li) |
| 1399 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1400 | struct lastlog last; |
| 1401 | int fd; |
| 1402 | |
| 1403 | /* create our struct lastlog */ |
| 1404 | lastlog_construct(li, &last); |
| 1405 | |
| 1406 | /* write the entry */ |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 1407 | if (lastlog_openseek(li, &fd, O_RDWR|O_CREAT)) { |
| 1408 | if (atomicio(write, fd, &last, sizeof(last)) != sizeof(last)) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1409 | log("lastlog_write_filemode: Error writing to %s: %s", |
| 1410 | LASTLOG_FILE, strerror(errno)); |
| 1411 | return 0; |
| 1412 | } |
| 1413 | return 1; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1414 | } else { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1415 | return 0; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1416 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1417 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1418 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1419 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1420 | lastlog_write_entry(struct logininfo *li) |
| 1421 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1422 | switch(li->type) { |
| 1423 | case LTYPE_LOGIN: |
| 1424 | return lastlog_perform_login(li); |
| 1425 | default: |
| 1426 | log("lastlog_write_entry: Invalid type field"); |
| 1427 | return 0; |
| 1428 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1429 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1430 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1431 | static void |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1432 | lastlog_populate_entry(struct logininfo *li, struct lastlog *last) |
| 1433 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1434 | line_fullname(li->line, last->ll_line, sizeof(li->line)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1435 | strlcpy(li->hostname, last->ll_host, |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1436 | MIN_SIZEOF(li->hostname, last->ll_host)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1437 | li->tv_sec = last->ll_time; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1438 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1439 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1440 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1441 | lastlog_get_entry(struct logininfo *li) |
| 1442 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1443 | struct lastlog last; |
| 1444 | int fd; |
| 1445 | |
| 1446 | if (lastlog_openseek(li, &fd, O_RDONLY)) { |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 1447 | if (atomicio(read, fd, &last, sizeof(last)) != sizeof(last)) { |
| 1448 | log("lastlog_get_entry: Error reading from %s: %s", |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1449 | LASTLOG_FILE, strerror(errno)); |
| 1450 | return 0; |
| 1451 | } else { |
| 1452 | lastlog_populate_entry(li, &last); |
| 1453 | return 1; |
| 1454 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1455 | } else { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1456 | return 0; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1457 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1458 | } |
Damien Miller | d5bf307 | 2000-06-07 21:32:13 +1000 | [diff] [blame] | 1459 | #endif /* USE_LASTLOG */ |