andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2000 Andre Lucas. All rights reserved. |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 3 | * Portions copyright (c) 1998 Todd C. Miller |
| 4 | * Portions copyright (c) 1996 Jason Downs |
| 5 | * Portions copyright (c) 1996 Theo de Raadt |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions |
| 9 | * are met: |
| 10 | * 1. Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer. |
| 12 | * 2. Redistributions in binary form must reproduce the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer in the |
| 14 | * documentation and/or other materials provided with the distribution. |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 15 | * |
| 16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 17 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 18 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 19 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 20 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 21 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 22 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 23 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 24 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 25 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 26 | */ |
| 27 | |
Darren Tucker | 2fba993 | 2005-02-02 23:30:24 +1100 | [diff] [blame] | 28 | /* |
| 29 | * The btmp logging code is derived from login.c from util-linux and is under |
| 30 | * the the following license: |
| 31 | * |
| 32 | * Copyright (c) 1980, 1987, 1988 The Regents of the University of California. |
| 33 | * All rights reserved. |
| 34 | * |
| 35 | * Redistribution and use in source and binary forms are permitted |
| 36 | * provided that the above copyright notice and this paragraph are |
| 37 | * duplicated in all such forms and that any documentation, |
| 38 | * advertising materials, and other materials related to such |
| 39 | * distribution and use acknowledge that the software was developed |
| 40 | * by the University of California, Berkeley. The name of the |
| 41 | * University may not be used to endorse or promote products derived |
| 42 | * from this software without specific prior written permission. |
| 43 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR |
| 44 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED |
| 45 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
| 46 | */ |
| 47 | |
| 48 | |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 49 | /** |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 50 | ** loginrec.c: platform-independent login recording and lastlog retrieval |
| 51 | **/ |
| 52 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 53 | /* |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 54 | * The new login code explained |
| 55 | * ============================ |
| 56 | * |
| 57 | * This code attempts to provide a common interface to login recording |
| 58 | * (utmp and friends) and last login time retrieval. |
| 59 | * |
| 60 | * Its primary means of achieving this is to use 'struct logininfo', a |
| 61 | * union of all the useful fields in the various different types of |
| 62 | * system login record structures one finds on UNIX variants. |
| 63 | * |
| 64 | * We depend on autoconf to define which recording methods are to be |
| 65 | * used, and which fields are contained in the relevant data structures |
| 66 | * on the local system. Many C preprocessor symbols affect which code |
| 67 | * gets compiled here. |
| 68 | * |
| 69 | * The code is designed to make it easy to modify a particular |
| 70 | * recording method, without affecting other methods nor requiring so |
| 71 | * many nested conditional compilation blocks as were commonplace in |
| 72 | * the old code. |
| 73 | * |
| 74 | * For login recording, we try to use the local system's libraries as |
| 75 | * these are clearly most likely to work correctly. For utmp systems |
| 76 | * this usually means login() and logout() or setutent() etc., probably |
| 77 | * in libutil, along with logwtmp() etc. On these systems, we fall back |
| 78 | * to writing the files directly if we have to, though this method |
| 79 | * requires very thorough testing so we do not corrupt local auditing |
| 80 | * information. These files and their access methods are very system |
| 81 | * specific indeed. |
| 82 | * |
| 83 | * For utmpx systems, the corresponding library functions are |
| 84 | * setutxent() etc. To the author's knowledge, all utmpx systems have |
| 85 | * these library functions and so no direct write is attempted. If such |
| 86 | * a system exists and needs support, direct analogues of the [uw]tmp |
| 87 | * code should suffice. |
| 88 | * |
| 89 | * Retrieving the time of last login ('lastlog') is in some ways even |
| 90 | * more problemmatic than login recording. Some systems provide a |
| 91 | * simple table of all users which we seek based on uid and retrieve a |
| 92 | * relatively standard structure. Others record the same information in |
| 93 | * a directory with a separate file, and others don't record the |
| 94 | * information separately at all. For systems in the latter category, |
| 95 | * we look backwards in the wtmp or wtmpx file for the last login entry |
| 96 | * for our user. Naturally this is slower and on busy systems could |
| 97 | * incur a significant performance penalty. |
| 98 | * |
| 99 | * Calling the new code |
| 100 | * -------------------- |
| 101 | * |
| 102 | * In OpenSSH all login recording and retrieval is performed in |
| 103 | * login.c. Here you'll find working examples. Also, in the logintest.c |
| 104 | * program there are more examples. |
| 105 | * |
| 106 | * Internal handler calling method |
| 107 | * ------------------------------- |
| 108 | * |
| 109 | * When a call is made to login_login() or login_logout(), both |
| 110 | * routines set a struct logininfo flag defining which action (log in, |
| 111 | * or log out) is to be taken. They both then call login_write(), which |
| 112 | * calls whichever of the many structure-specific handlers autoconf |
| 113 | * selects for the local system. |
| 114 | * |
| 115 | * The handlers themselves handle system data structure specifics. Both |
| 116 | * struct utmp and struct utmpx have utility functions (see |
| 117 | * construct_utmp*()) to try to make it simpler to add extra systems |
| 118 | * that introduce new features to either structure. |
| 119 | * |
| 120 | * While it may seem terribly wasteful to replicate so much similar |
| 121 | * code for each method, experience has shown that maintaining code to |
| 122 | * write both struct utmp and utmpx in one function, whilst maintaining |
| 123 | * support for all systems whether they have library support or not, is |
| 124 | * a difficult and time-consuming task. |
| 125 | * |
| 126 | * Lastlog support proceeds similarly. Functions login_get_lastlog() |
| 127 | * (and its OpenSSH-tuned friend login_get_lastlog_time()) call |
| 128 | * getlast_entry(), which tries one of three methods to find the last |
| 129 | * login time. It uses local system lastlog support if it can, |
| 130 | * otherwise it tries wtmp or wtmpx before giving up and returning 0, |
| 131 | * meaning "tilt". |
| 132 | * |
| 133 | * Maintenance |
| 134 | * ----------- |
| 135 | * |
| 136 | * In many cases it's possible to tweak autoconf to select the correct |
| 137 | * methods for a particular platform, either by improving the detection |
| 138 | * code (best), or by presetting DISABLE_<method> or CONF_<method>_FILE |
| 139 | * symbols for the platform. |
| 140 | * |
| 141 | * Use logintest to check which symbols are defined before modifying |
| 142 | * configure.ac and loginrec.c. (You have to build logintest yourself |
| 143 | * with 'make logintest' as it's not built by default.) |
| 144 | * |
| 145 | * Otherwise, patches to the specific method(s) are very helpful! |
| 146 | */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 147 | |
| 148 | #include "includes.h" |
| 149 | |
Damien Miller | 6277252 | 2006-03-15 14:01:11 +1100 | [diff] [blame] | 150 | #include <sys/types.h> |
| 151 | #include <sys/stat.h> |
Damien Miller | 8ec8c3e | 2006-07-10 20:35:38 +1000 | [diff] [blame] | 152 | #include <sys/socket.h> |
| 153 | |
| 154 | #include <netinet/in.h> |
Damien Miller | 6277252 | 2006-03-15 14:01:11 +1100 | [diff] [blame] | 155 | |
Darren Tucker | 2c1a02a | 2006-07-12 22:40:50 +1000 | [diff] [blame] | 156 | #include <errno.h> |
Damien Miller | a1738e4 | 2006-07-10 21:33:04 +1000 | [diff] [blame] | 157 | #include <fcntl.h> |
Darren Tucker | f19bbc3 | 2006-09-07 22:57:53 +1000 | [diff] [blame] | 158 | #ifdef HAVE_PATHS_H |
| 159 | # include <paths.h> |
| 160 | #endif |
Damien Miller | 9f2abc4 | 2006-07-10 20:53:08 +1000 | [diff] [blame] | 161 | #include <pwd.h> |
Damien Miller | ded319c | 2006-09-01 15:38:36 +1000 | [diff] [blame] | 162 | #include <stdarg.h> |
Damien Miller | b8fe89c | 2006-07-24 14:51:00 +1000 | [diff] [blame] | 163 | #include <string.h> |
Darren Tucker | d757e69 | 2007-04-29 12:10:57 +1000 | [diff] [blame] | 164 | #include <time.h> |
Damien Miller | b8fe89c | 2006-07-24 14:51:00 +1000 | [diff] [blame] | 165 | #include <unistd.h> |
Damien Miller | 9f2abc4 | 2006-07-10 20:53:08 +1000 | [diff] [blame] | 166 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 167 | #include "xmalloc.h" |
Damien Miller | d783435 | 2006-08-05 12:39:39 +1000 | [diff] [blame] | 168 | #include "key.h" |
| 169 | #include "hostfile.h" |
| 170 | #include "ssh.h" |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 171 | #include "loginrec.h" |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame] | 172 | #include "log.h" |
| 173 | #include "atomicio.h" |
Darren Tucker | 2fba993 | 2005-02-02 23:30:24 +1100 | [diff] [blame] | 174 | #include "packet.h" |
| 175 | #include "canohost.h" |
Darren Tucker | 269a1ea | 2005-02-03 00:20:53 +1100 | [diff] [blame] | 176 | #include "auth.h" |
Darren Tucker | a39f83e | 2005-02-15 22:19:28 +1100 | [diff] [blame] | 177 | #include "buffer.h" |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 178 | |
Ben Lindstrom | dcca981 | 2000-11-10 03:28:31 +0000 | [diff] [blame] | 179 | #ifdef HAVE_UTIL_H |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 180 | # include <util.h> |
Ben Lindstrom | dcca981 | 2000-11-10 03:28:31 +0000 | [diff] [blame] | 181 | #endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 182 | |
| 183 | /** |
| 184 | ** prototypes for helper functions in this file |
| 185 | **/ |
| 186 | |
| 187 | #if HAVE_UTMP_H |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 188 | void set_utmp_time(struct logininfo *li, struct utmp *ut); |
| 189 | void construct_utmp(struct logininfo *li, struct utmp *ut); |
| 190 | #endif |
| 191 | |
| 192 | #ifdef HAVE_UTMPX_H |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 193 | void set_utmpx_time(struct logininfo *li, struct utmpx *ut); |
| 194 | void construct_utmpx(struct logininfo *li, struct utmpx *ut); |
| 195 | #endif |
| 196 | |
| 197 | int utmp_write_entry(struct logininfo *li); |
| 198 | int utmpx_write_entry(struct logininfo *li); |
| 199 | int wtmp_write_entry(struct logininfo *li); |
| 200 | int wtmpx_write_entry(struct logininfo *li); |
| 201 | int lastlog_write_entry(struct logininfo *li); |
| 202 | int syslogin_write_entry(struct logininfo *li); |
| 203 | |
| 204 | int getlast_entry(struct logininfo *li); |
| 205 | int lastlog_get_entry(struct logininfo *li); |
Darren Tucker | 261d93a | 2010-04-09 18:13:27 +1000 | [diff] [blame] | 206 | int utmpx_get_entry(struct logininfo *li); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 207 | int wtmp_get_entry(struct logininfo *li); |
| 208 | int wtmpx_get_entry(struct logininfo *li); |
| 209 | |
Darren Tucker | 691d523 | 2005-02-15 21:45:57 +1100 | [diff] [blame] | 210 | extern Buffer loginmsg; |
| 211 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 212 | /* pick the shortest string */ |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 213 | #define MIN_SIZEOF(s1,s2) (sizeof(s1) < sizeof(s2) ? sizeof(s1) : sizeof(s2)) |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 214 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 215 | /** |
| 216 | ** platform-independent login functions |
| 217 | **/ |
| 218 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 219 | /* |
| 220 | * login_login(struct logininfo *) - Record a login |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 221 | * |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 222 | * Call with a pointer to a struct logininfo initialised with |
| 223 | * login_init_entry() or login_alloc_entry() |
| 224 | * |
| 225 | * Returns: |
| 226 | * >0 if successful |
| 227 | * 0 on failure (will use OpenSSH's logging facilities for diagnostics) |
| 228 | */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 229 | int |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 230 | login_login(struct logininfo *li) |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 231 | { |
| 232 | li->type = LTYPE_LOGIN; |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 233 | return (login_write(li)); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 234 | } |
| 235 | |
| 236 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 237 | /* |
| 238 | * login_logout(struct logininfo *) - Record a logout |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 239 | * |
| 240 | * Call as with login_login() |
| 241 | * |
| 242 | * Returns: |
| 243 | * >0 if successful |
| 244 | * 0 on failure (will use OpenSSH's logging facilities for diagnostics) |
| 245 | */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 246 | int |
| 247 | login_logout(struct logininfo *li) |
| 248 | { |
| 249 | li->type = LTYPE_LOGOUT; |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 250 | return (login_write(li)); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 251 | } |
| 252 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 253 | /* |
| 254 | * login_get_lastlog_time(int) - Retrieve the last login time |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 255 | * |
| 256 | * Retrieve the last login time for the given uid. Will try to use the |
| 257 | * system lastlog facilities if they are available, but will fall back |
| 258 | * to looking in wtmp/wtmpx if necessary |
| 259 | * |
| 260 | * Returns: |
| 261 | * 0 on failure, or if user has never logged in |
| 262 | * Time in seconds from the epoch if successful |
| 263 | * |
| 264 | * Useful preprocessor symbols: |
| 265 | * DISABLE_LASTLOG: If set, *never* even try to retrieve lastlog |
| 266 | * info |
| 267 | * USE_LASTLOG: If set, indicates the presence of system lastlog |
| 268 | * facilities. If this and DISABLE_LASTLOG are not set, |
| 269 | * try to retrieve lastlog information from wtmp/wtmpx. |
| 270 | */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 271 | unsigned int |
Damien Miller | 34ee420 | 2010-11-05 10:52:37 +1100 | [diff] [blame] | 272 | login_get_lastlog_time(const uid_t uid) |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 273 | { |
| 274 | struct logininfo li; |
| 275 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 276 | if (login_get_lastlog(&li, uid)) |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 277 | return (li.tv_sec); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 278 | else |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 279 | return (0); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 280 | } |
| 281 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 282 | /* |
| 283 | * login_get_lastlog(struct logininfo *, int) - Retrieve a lastlog entry |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 284 | * |
| 285 | * Retrieve a logininfo structure populated (only partially) with |
| 286 | * information from the system lastlog data, or from wtmp/wtmpx if no |
| 287 | * system lastlog information exists. |
| 288 | * |
| 289 | * Note this routine must be given a pre-allocated logininfo. |
| 290 | * |
| 291 | * Returns: |
| 292 | * >0: A pointer to your struct logininfo if successful |
| 293 | * 0 on failure (will use OpenSSH's logging facilities for diagnostics) |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 294 | */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 295 | struct logininfo * |
Damien Miller | 34ee420 | 2010-11-05 10:52:37 +1100 | [diff] [blame] | 296 | login_get_lastlog(struct logininfo *li, const uid_t uid) |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 297 | { |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 298 | struct passwd *pw; |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 299 | |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 300 | memset(li, '\0', sizeof(*li)); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 301 | li->uid = uid; |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 302 | |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 303 | /* |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 304 | * If we don't have a 'real' lastlog, we need the username to |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 305 | * reliably search wtmp(x) for the last login (see |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 306 | * wtmp_get_entry().) |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 307 | */ |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 308 | pw = getpwuid(uid); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 309 | if (pw == NULL) |
Damien Miller | 34ee420 | 2010-11-05 10:52:37 +1100 | [diff] [blame] | 310 | fatal("%s: Cannot find account for uid %ld", __func__, |
| 311 | (long)uid); |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 312 | |
Damien Miller | 7d97fd9 | 2013-12-29 17:40:18 +1100 | [diff] [blame] | 313 | if (strlcpy(li->username, pw->pw_name, sizeof(li->username)) >= |
| 314 | sizeof(li->username)) { |
| 315 | error("%s: username too long (%lu > max %lu)", __func__, |
| 316 | strlen(pw->pw_name), sizeof(li->username) - 1); |
| 317 | return NULL; |
| 318 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 319 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 320 | if (getlast_entry(li)) |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 321 | return (li); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 322 | else |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 323 | return (NULL); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 324 | } |
| 325 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 326 | /* |
| 327 | * login_alloc_entry(int, char*, char*, char*) - Allocate and initialise |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 328 | * a logininfo structure |
| 329 | * |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 330 | * This function creates a new struct logininfo, a data structure |
| 331 | * meant to carry the information required to portably record login info. |
| 332 | * |
| 333 | * Returns a pointer to a newly created struct logininfo. If memory |
| 334 | * allocation fails, the program halts. |
| 335 | */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 336 | struct |
Damien Miller | 34ee420 | 2010-11-05 10:52:37 +1100 | [diff] [blame] | 337 | logininfo *login_alloc_entry(pid_t pid, const char *username, |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 338 | const char *hostname, const char *line) |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 339 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 340 | struct logininfo *newli; |
| 341 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 342 | newli = xmalloc(sizeof(*newli)); |
| 343 | login_init_entry(newli, pid, username, hostname, line); |
| 344 | return (newli); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 345 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 346 | |
| 347 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 348 | /* login_free_entry(struct logininfo *) - free struct memory */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 349 | void |
| 350 | login_free_entry(struct logininfo *li) |
| 351 | { |
Darren Tucker | f60845f | 2013-06-02 08:07:31 +1000 | [diff] [blame] | 352 | free(li); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 353 | } |
| 354 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 355 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 356 | /* login_init_entry(struct logininfo *, int, char*, char*, char*) |
| 357 | * - initialise a struct logininfo |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 358 | * |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 359 | * Populates a new struct logininfo, a data structure meant to carry |
| 360 | * the information required to portably record login info. |
| 361 | * |
| 362 | * Returns: 1 |
| 363 | */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 364 | int |
Damien Miller | 34ee420 | 2010-11-05 10:52:37 +1100 | [diff] [blame] | 365 | login_init_entry(struct logininfo *li, pid_t pid, const char *username, |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 366 | const char *hostname, const char *line) |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 367 | { |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 368 | struct passwd *pw; |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 369 | |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 370 | memset(li, 0, sizeof(*li)); |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 371 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 372 | li->pid = pid; |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 373 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 374 | /* set the line information */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 375 | if (line) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 376 | line_fullname(li->line, line, sizeof(li->line)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 377 | |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 378 | if (username) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 379 | strlcpy(li->username, username, sizeof(li->username)); |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 380 | pw = getpwnam(li->username); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 381 | if (pw == NULL) { |
Damien Miller | 94cf4c8 | 2005-07-17 17:04:47 +1000 | [diff] [blame] | 382 | fatal("%s: Cannot find user \"%s\"", __func__, |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 383 | li->username); |
| 384 | } |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 385 | li->uid = pw->pw_uid; |
| 386 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 387 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 388 | if (hostname) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 389 | strlcpy(li->hostname, hostname, sizeof(li->hostname)); |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 390 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 391 | return (1); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 392 | } |
| 393 | |
Damien Miller | 94cf4c8 | 2005-07-17 17:04:47 +1000 | [diff] [blame] | 394 | /* |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 395 | * login_set_current_time(struct logininfo *) - set the current time |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 396 | * |
| 397 | * Set the current time in a logininfo structure. This function is |
| 398 | * meant to eliminate the need to deal with system dependencies for |
| 399 | * time handling. |
| 400 | */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 401 | void |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 402 | login_set_current_time(struct logininfo *li) |
| 403 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 404 | struct timeval tv; |
| 405 | |
| 406 | gettimeofday(&tv, NULL); |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 407 | |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 408 | li->tv_sec = tv.tv_sec; |
| 409 | li->tv_usec = tv.tv_usec; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 410 | } |
| 411 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 412 | /* copy a sockaddr_* into our logininfo */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 413 | void |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 414 | login_set_addr(struct logininfo *li, const struct sockaddr *sa, |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 415 | const unsigned int sa_size) |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 416 | { |
| 417 | unsigned int bufsize = sa_size; |
| 418 | |
| 419 | /* make sure we don't overrun our union */ |
| 420 | if (sizeof(li->hostaddr) < sa_size) |
| 421 | bufsize = sizeof(li->hostaddr); |
| 422 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 423 | memcpy(&li->hostaddr.sa, sa, bufsize); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 424 | } |
| 425 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 426 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 427 | /** |
| 428 | ** login_write: Call low-level recording functions based on autoconf |
| 429 | ** results |
| 430 | **/ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 431 | int |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 432 | login_write(struct logininfo *li) |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 433 | { |
Damien Miller | bac2d8a | 2000-09-05 16:13:06 +1100 | [diff] [blame] | 434 | #ifndef HAVE_CYGWIN |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 435 | if (geteuid() != 0) { |
| 436 | logit("Attempt to write login records by non-root user (aborting)"); |
| 437 | return (1); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 438 | } |
Damien Miller | bac2d8a | 2000-09-05 16:13:06 +1100 | [diff] [blame] | 439 | #endif |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 440 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 441 | /* set the timestamp */ |
| 442 | login_set_current_time(li); |
| 443 | #ifdef USE_LOGIN |
| 444 | syslogin_write_entry(li); |
| 445 | #endif |
| 446 | #ifdef USE_LASTLOG |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 447 | if (li->type == LTYPE_LOGIN) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 448 | lastlog_write_entry(li); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 449 | #endif |
| 450 | #ifdef USE_UTMP |
| 451 | utmp_write_entry(li); |
| 452 | #endif |
| 453 | #ifdef USE_WTMP |
| 454 | wtmp_write_entry(li); |
| 455 | #endif |
| 456 | #ifdef USE_UTMPX |
| 457 | utmpx_write_entry(li); |
| 458 | #endif |
| 459 | #ifdef USE_WTMPX |
| 460 | wtmpx_write_entry(li); |
| 461 | #endif |
Darren Tucker | 397a2f2 | 2004-08-15 00:09:11 +1000 | [diff] [blame] | 462 | #ifdef CUSTOM_SYS_AUTH_RECORD_LOGIN |
Damien Miller | 94cf4c8 | 2005-07-17 17:04:47 +1000 | [diff] [blame] | 463 | if (li->type == LTYPE_LOGIN && |
Damien Miller | b6f72f5 | 2005-07-17 17:26:43 +1000 | [diff] [blame] | 464 | !sys_auth_record_login(li->username,li->hostname,li->line, |
| 465 | &loginmsg)) |
Darren Tucker | 397a2f2 | 2004-08-15 00:09:11 +1000 | [diff] [blame] | 466 | logit("Writing login record failed for %s", li->username); |
| 467 | #endif |
Darren Tucker | 2e0cf0d | 2005-02-08 21:52:47 +1100 | [diff] [blame] | 468 | #ifdef SSH_AUDIT_EVENTS |
Darren Tucker | 269a1ea | 2005-02-03 00:20:53 +1100 | [diff] [blame] | 469 | if (li->type == LTYPE_LOGIN) |
Darren Tucker | ea52a82 | 2011-01-17 21:15:27 +1100 | [diff] [blame] | 470 | audit_session_open(li); |
Darren Tucker | 269a1ea | 2005-02-03 00:20:53 +1100 | [diff] [blame] | 471 | else if (li->type == LTYPE_LOGOUT) |
Darren Tucker | ea52a82 | 2011-01-17 21:15:27 +1100 | [diff] [blame] | 472 | audit_session_close(li); |
Darren Tucker | 269a1ea | 2005-02-03 00:20:53 +1100 | [diff] [blame] | 473 | #endif |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 474 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 475 | } |
| 476 | |
Ben Lindstrom | 97c677d | 2001-05-08 20:33:05 +0000 | [diff] [blame] | 477 | #ifdef LOGIN_NEEDS_UTMPX |
| 478 | int |
| 479 | login_utmp_only(struct logininfo *li) |
| 480 | { |
Damien Miller | a8e06ce | 2003-11-21 23:48:55 +1100 | [diff] [blame] | 481 | li->type = LTYPE_LOGIN; |
Ben Lindstrom | 9197c59 | 2001-10-26 15:56:55 +0000 | [diff] [blame] | 482 | login_set_current_time(li); |
Ben Lindstrom | 97c677d | 2001-05-08 20:33:05 +0000 | [diff] [blame] | 483 | # ifdef USE_UTMP |
| 484 | utmp_write_entry(li); |
| 485 | # endif |
| 486 | # ifdef USE_WTMP |
| 487 | wtmp_write_entry(li); |
| 488 | # endif |
| 489 | # ifdef USE_UTMPX |
| 490 | utmpx_write_entry(li); |
| 491 | # endif |
| 492 | # ifdef USE_WTMPX |
| 493 | wtmpx_write_entry(li); |
| 494 | # endif |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 495 | return (0); |
Ben Lindstrom | 97c677d | 2001-05-08 20:33:05 +0000 | [diff] [blame] | 496 | } |
| 497 | #endif |
| 498 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 499 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 500 | ** getlast_entry: Call low-level functions to retrieve the last login |
| 501 | ** time. |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 502 | **/ |
| 503 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 504 | /* take the uid in li and return the last login time */ |
| 505 | int |
| 506 | getlast_entry(struct logininfo *li) |
| 507 | { |
| 508 | #ifdef USE_LASTLOG |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 509 | return(lastlog_get_entry(li)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 510 | #else /* !USE_LASTLOG */ |
Darren Tucker | 261d93a | 2010-04-09 18:13:27 +1000 | [diff] [blame] | 511 | #if defined(USE_UTMPX) && defined(HAVE_SETUTXDB) && \ |
| 512 | defined(UTXDB_LASTLOGIN) && defined(HAVE_GETUTXUSER) |
| 513 | return (utmpx_get_entry(li)); |
| 514 | #endif |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 515 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 516 | #if defined(DISABLE_LASTLOG) |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 517 | /* On some systems we shouldn't even try to obtain last login |
andre | ecaabf1 | 2000-06-12 22:21:44 +0000 | [diff] [blame] | 518 | * time, e.g. AIX */ |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 519 | return (0); |
| 520 | # elif defined(USE_WTMP) && \ |
| 521 | (defined(HAVE_TIME_IN_UTMP) || defined(HAVE_TV_IN_UTMP)) |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 522 | /* retrieve last login time from utmp */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 523 | return (wtmp_get_entry(li)); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 524 | # elif defined(USE_WTMPX) && \ |
| 525 | (defined(HAVE_TIME_IN_UTMPX) || defined(HAVE_TV_IN_UTMPX)) |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 526 | /* If wtmp isn't available, try wtmpx */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 527 | return (wtmpx_get_entry(li)); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 528 | # else |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 529 | /* Give up: No means of retrieving last login time */ |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 530 | return (0); |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 531 | # endif /* DISABLE_LASTLOG */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 532 | #endif /* USE_LASTLOG */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 533 | } |
| 534 | |
| 535 | |
| 536 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 537 | /* |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 538 | * 'line' string utility functions |
| 539 | * |
| 540 | * These functions process the 'line' string into one of three forms: |
| 541 | * |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 542 | * 1. The full filename (including '/dev') |
| 543 | * 2. The stripped name (excluding '/dev') |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 544 | * 3. The abbreviated name (e.g. /dev/ttyp00 -> yp00 |
| 545 | * /dev/pts/1 -> ts/1 ) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 546 | * |
| 547 | * Form 3 is used on some systems to identify a .tmp.? entry when |
| 548 | * attempting to remove it. Typically both addition and removal is |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 549 | * performed by one application - say, sshd - so as long as the choice |
| 550 | * uniquely identifies a terminal it's ok. |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 551 | */ |
| 552 | |
| 553 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 554 | /* |
| 555 | * line_fullname(): add the leading '/dev/' if it doesn't exist make |
| 556 | * sure dst has enough space, if not just copy src (ugh) |
| 557 | */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 558 | char * |
Damien Miller | 52c8afe | 2005-06-19 10:19:43 +1000 | [diff] [blame] | 559 | line_fullname(char *dst, const char *src, u_int dstsize) |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 560 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 561 | memset(dst, '\0', dstsize); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 562 | if ((strncmp(src, "/dev/", 5) == 0) || (dstsize < (strlen(src) + 5))) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 563 | strlcpy(dst, src, dstsize); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 564 | else { |
Damien Miller | 1a13225 | 2000-06-13 21:23:17 +1000 | [diff] [blame] | 565 | strlcpy(dst, "/dev/", dstsize); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 566 | strlcat(dst, src, dstsize); |
| 567 | } |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 568 | return (dst); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 569 | } |
| 570 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 571 | /* line_stripname(): strip the leading '/dev' if it exists, return dst */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 572 | char * |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 573 | line_stripname(char *dst, const char *src, int dstsize) |
| 574 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 575 | memset(dst, '\0', dstsize); |
| 576 | if (strncmp(src, "/dev/", 5) == 0) |
Damien Miller | f5a8147 | 2000-09-30 21:34:44 +1100 | [diff] [blame] | 577 | strlcpy(dst, src + 5, dstsize); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 578 | else |
| 579 | strlcpy(dst, src, dstsize); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 580 | return (dst); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 581 | } |
| 582 | |
Damien Miller | 94cf4c8 | 2005-07-17 17:04:47 +1000 | [diff] [blame] | 583 | /* |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 584 | * line_abbrevname(): Return the abbreviated (usually four-character) |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 585 | * form of the line (Just use the last <dstsize> characters of the |
| 586 | * full name.) |
| 587 | * |
| 588 | * NOTE: use strncpy because we do NOT necessarily want zero |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 589 | * termination |
| 590 | */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 591 | char * |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 592 | line_abbrevname(char *dst, const char *src, int dstsize) |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 593 | { |
| 594 | size_t len; |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 595 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 596 | memset(dst, '\0', dstsize); |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 597 | |
Damien Miller | 8e81ed3 | 2000-07-01 13:17:42 +1000 | [diff] [blame] | 598 | /* Always skip prefix if present */ |
| 599 | if (strncmp(src, "/dev/", 5) == 0) |
| 600 | src += 5; |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 601 | |
Damien Miller | f1b9d11 | 2002-04-23 23:09:19 +1000 | [diff] [blame] | 602 | #ifdef WITH_ABBREV_NO_TTY |
| 603 | if (strncmp(src, "tty", 3) == 0) |
| 604 | src += 3; |
| 605 | #endif |
| 606 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 607 | len = strlen(src); |
| 608 | |
Damien Miller | 8e81ed3 | 2000-07-01 13:17:42 +1000 | [diff] [blame] | 609 | if (len > 0) { |
| 610 | if (((int)len - dstsize) > 0) |
| 611 | src += ((int)len - dstsize); |
| 612 | |
| 613 | /* note: _don't_ change this to strlcpy */ |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 614 | strncpy(dst, src, (size_t)dstsize); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 615 | } |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 616 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 617 | return (dst); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 618 | } |
| 619 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 620 | /** |
| 621 | ** utmp utility functions |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 622 | ** |
| 623 | ** These functions manipulate struct utmp, taking system differences |
| 624 | ** into account. |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 625 | **/ |
| 626 | |
| 627 | #if defined(USE_UTMP) || defined (USE_WTMP) || defined (USE_LOGIN) |
| 628 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 629 | /* build the utmp structure */ |
| 630 | void |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 631 | set_utmp_time(struct logininfo *li, struct utmp *ut) |
| 632 | { |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 633 | # if defined(HAVE_TV_IN_UTMP) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 634 | ut->ut_tv.tv_sec = li->tv_sec; |
| 635 | ut->ut_tv.tv_usec = li->tv_usec; |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 636 | # elif defined(HAVE_TIME_IN_UTMP) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 637 | ut->ut_time = li->tv_sec; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 638 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 639 | } |
| 640 | |
| 641 | void |
| 642 | construct_utmp(struct logininfo *li, |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 643 | struct utmp *ut) |
| 644 | { |
Damien Miller | 02e16ad | 2003-01-03 14:42:27 +1100 | [diff] [blame] | 645 | # ifdef HAVE_ADDR_V6_IN_UTMP |
| 646 | struct sockaddr_in6 *sa6; |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 647 | # endif |
| 648 | |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 649 | memset(ut, '\0', sizeof(*ut)); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 650 | |
| 651 | /* First fill out fields used for both logins and logouts */ |
| 652 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 653 | # ifdef HAVE_ID_IN_UTMP |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 654 | line_abbrevname(ut->ut_id, li->line, sizeof(ut->ut_id)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 655 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 656 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 657 | # ifdef HAVE_TYPE_IN_UTMP |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 658 | /* This is done here to keep utmp constants out of struct logininfo */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 659 | switch (li->type) { |
| 660 | case LTYPE_LOGIN: |
| 661 | ut->ut_type = USER_PROCESS; |
Tim Rice | 81ed518 | 2002-09-25 17:38:46 -0700 | [diff] [blame] | 662 | #ifdef _UNICOS |
Ben Lindstrom | 6db66ff | 2001-08-06 23:29:16 +0000 | [diff] [blame] | 663 | cray_set_tmpdir(ut); |
| 664 | #endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 665 | break; |
| 666 | case LTYPE_LOGOUT: |
| 667 | ut->ut_type = DEAD_PROCESS; |
Tim Rice | 81ed518 | 2002-09-25 17:38:46 -0700 | [diff] [blame] | 668 | #ifdef _UNICOS |
Ben Lindstrom | 6db66ff | 2001-08-06 23:29:16 +0000 | [diff] [blame] | 669 | cray_retain_utmp(ut, li->pid); |
| 670 | #endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 671 | break; |
| 672 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 673 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 674 | set_utmp_time(li, ut); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 675 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 676 | line_stripname(ut->ut_line, li->line, sizeof(ut->ut_line)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 677 | |
| 678 | # ifdef HAVE_PID_IN_UTMP |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 679 | ut->ut_pid = li->pid; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 680 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 681 | |
| 682 | /* If we're logging out, leave all other fields blank */ |
| 683 | if (li->type == LTYPE_LOGOUT) |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 684 | return; |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 685 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 686 | /* |
| 687 | * These fields are only used when logging in, and are blank |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 688 | * for logouts. |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 689 | */ |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 690 | |
| 691 | /* Use strncpy because we don't necessarily want null termination */ |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 692 | strncpy(ut->ut_name, li->username, |
| 693 | MIN_SIZEOF(ut->ut_name, li->username)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 694 | # ifdef HAVE_HOST_IN_UTMP |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 695 | strncpy(ut->ut_host, li->hostname, |
| 696 | MIN_SIZEOF(ut->ut_host, li->hostname)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 697 | # endif |
| 698 | # ifdef HAVE_ADDR_IN_UTMP |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 699 | /* this is just a 32-bit IP address */ |
| 700 | if (li->hostaddr.sa.sa_family == AF_INET) |
| 701 | ut->ut_addr = li->hostaddr.sa_in.sin_addr.s_addr; |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 702 | # endif |
Damien Miller | 02e16ad | 2003-01-03 14:42:27 +1100 | [diff] [blame] | 703 | # ifdef HAVE_ADDR_V6_IN_UTMP |
| 704 | /* this is just a 128-bit IPv6 address */ |
| 705 | if (li->hostaddr.sa.sa_family == AF_INET6) { |
| 706 | sa6 = ((struct sockaddr_in6 *)&li->hostaddr.sa); |
| 707 | memcpy(ut->ut_addr_v6, sa6->sin6_addr.s6_addr, 16); |
| 708 | if (IN6_IS_ADDR_V4MAPPED(&sa6->sin6_addr)) { |
| 709 | ut->ut_addr_v6[0] = ut->ut_addr_v6[3]; |
| 710 | ut->ut_addr_v6[1] = 0; |
| 711 | ut->ut_addr_v6[2] = 0; |
| 712 | ut->ut_addr_v6[3] = 0; |
| 713 | } |
| 714 | } |
| 715 | # endif |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 716 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 717 | #endif /* USE_UTMP || USE_WTMP || USE_LOGIN */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 718 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 719 | /** |
| 720 | ** utmpx utility functions |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 721 | ** |
| 722 | ** These functions manipulate struct utmpx, accounting for system |
| 723 | ** variations. |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 724 | **/ |
| 725 | |
| 726 | #if defined(USE_UTMPX) || defined (USE_WTMPX) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 727 | /* build the utmpx structure */ |
| 728 | void |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 729 | set_utmpx_time(struct logininfo *li, struct utmpx *utx) |
| 730 | { |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 731 | # if defined(HAVE_TV_IN_UTMPX) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 732 | utx->ut_tv.tv_sec = li->tv_sec; |
| 733 | utx->ut_tv.tv_usec = li->tv_usec; |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 734 | # elif defined(HAVE_TIME_IN_UTMPX) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 735 | utx->ut_time = li->tv_sec; |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 736 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 737 | } |
| 738 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 739 | void |
| 740 | construct_utmpx(struct logininfo *li, struct utmpx *utx) |
| 741 | { |
Damien Miller | 02e16ad | 2003-01-03 14:42:27 +1100 | [diff] [blame] | 742 | # ifdef HAVE_ADDR_V6_IN_UTMP |
| 743 | struct sockaddr_in6 *sa6; |
| 744 | # endif |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 745 | memset(utx, '\0', sizeof(*utx)); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 746 | |
Damien Miller | 8e81ed3 | 2000-07-01 13:17:42 +1000 | [diff] [blame] | 747 | # ifdef HAVE_ID_IN_UTMPX |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 748 | line_abbrevname(utx->ut_id, li->line, sizeof(utx->ut_id)); |
Damien Miller | 8e81ed3 | 2000-07-01 13:17:42 +1000 | [diff] [blame] | 749 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 750 | |
| 751 | /* this is done here to keep utmp constants out of loginrec.h */ |
| 752 | switch (li->type) { |
| 753 | case LTYPE_LOGIN: |
| 754 | utx->ut_type = USER_PROCESS; |
| 755 | break; |
| 756 | case LTYPE_LOGOUT: |
| 757 | utx->ut_type = DEAD_PROCESS; |
| 758 | break; |
| 759 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 760 | line_stripname(utx->ut_line, li->line, sizeof(utx->ut_line)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 761 | set_utmpx_time(li, utx); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 762 | utx->ut_pid = li->pid; |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 763 | |
Tim Rice | e06ae4a | 2002-02-24 17:56:46 -0800 | [diff] [blame] | 764 | /* strncpy(): Don't necessarily want null termination */ |
Darren Tucker | 0b8a226 | 2010-01-09 18:18:04 +1100 | [diff] [blame] | 765 | strncpy(utx->ut_user, li->username, |
| 766 | MIN_SIZEOF(utx->ut_user, li->username)); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 767 | |
| 768 | if (li->type == LTYPE_LOGOUT) |
| 769 | return; |
| 770 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 771 | /* |
| 772 | * These fields are only used when logging in, and are blank |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 773 | * for logouts. |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 774 | */ |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 775 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 776 | # ifdef HAVE_HOST_IN_UTMPX |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 777 | strncpy(utx->ut_host, li->hostname, |
| 778 | MIN_SIZEOF(utx->ut_host, li->hostname)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 779 | # endif |
| 780 | # ifdef HAVE_ADDR_IN_UTMPX |
Damien Miller | d6f204d | 2000-09-23 13:57:27 +1100 | [diff] [blame] | 781 | /* this is just a 32-bit IP address */ |
| 782 | if (li->hostaddr.sa.sa_family == AF_INET) |
| 783 | utx->ut_addr = li->hostaddr.sa_in.sin_addr.s_addr; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 784 | # endif |
Damien Miller | 02e16ad | 2003-01-03 14:42:27 +1100 | [diff] [blame] | 785 | # ifdef HAVE_ADDR_V6_IN_UTMP |
| 786 | /* this is just a 128-bit IPv6 address */ |
| 787 | if (li->hostaddr.sa.sa_family == AF_INET6) { |
| 788 | sa6 = ((struct sockaddr_in6 *)&li->hostaddr.sa); |
| 789 | memcpy(ut->ut_addr_v6, sa6->sin6_addr.s6_addr, 16); |
| 790 | if (IN6_IS_ADDR_V4MAPPED(&sa6->sin6_addr)) { |
| 791 | ut->ut_addr_v6[0] = ut->ut_addr_v6[3]; |
| 792 | ut->ut_addr_v6[1] = 0; |
| 793 | ut->ut_addr_v6[2] = 0; |
| 794 | ut->ut_addr_v6[3] = 0; |
| 795 | } |
| 796 | } |
| 797 | # endif |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 798 | # ifdef HAVE_SYSLEN_IN_UTMPX |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 799 | /* ut_syslen is the length of the utx_host string */ |
| 800 | utx->ut_syslen = MIN(strlen(li->hostname), sizeof(utx->ut_host)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 801 | # endif |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 802 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 803 | #endif /* USE_UTMPX || USE_WTMPX */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 804 | |
| 805 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 806 | ** Low-level utmp functions |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 807 | **/ |
| 808 | |
| 809 | /* FIXME: (ATL) utmp_write_direct needs testing */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 810 | #ifdef USE_UTMP |
| 811 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 812 | /* if we can, use pututline() etc. */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 813 | # if !defined(DISABLE_PUTUTLINE) && defined(HAVE_SETUTENT) && \ |
| 814 | defined(HAVE_PUTUTLINE) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 815 | # define UTMP_USE_LIBRARY |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 816 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 817 | |
| 818 | |
| 819 | /* write a utmp entry with the system's help (pututline() and pals) */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 820 | # ifdef UTMP_USE_LIBRARY |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 821 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 822 | utmp_write_library(struct logininfo *li, struct utmp *ut) |
| 823 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 824 | setutent(); |
| 825 | pututline(ut); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 826 | # ifdef HAVE_ENDUTENT |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 827 | endutent(); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 828 | # endif |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 829 | return (1); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 830 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 831 | # else /* UTMP_USE_LIBRARY */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 832 | |
Damien Miller | 94cf4c8 | 2005-07-17 17:04:47 +1000 | [diff] [blame] | 833 | /* |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 834 | * Write a utmp entry direct to the file |
| 835 | * This is a slightly modification of code in OpenBSD's login.c |
| 836 | */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 837 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 838 | utmp_write_direct(struct logininfo *li, struct utmp *ut) |
| 839 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 840 | struct utmp old_ut; |
| 841 | register int fd; |
| 842 | int tty; |
| 843 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 844 | /* FIXME: (ATL) ttyslot() needs local implementation */ |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 845 | |
Damien Miller | e5192fa | 2000-08-29 14:30:37 +1100 | [diff] [blame] | 846 | #if defined(HAVE_GETTTYENT) |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 847 | struct ttyent *ty; |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 848 | |
| 849 | tty=0; |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 850 | setttyent(); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 851 | while (NULL != (ty = getttyent())) { |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 852 | tty++; |
| 853 | if (!strncmp(ty->ty_name, ut->ut_line, sizeof(ut->ut_line))) |
| 854 | break; |
| 855 | } |
| 856 | endttyent(); |
| 857 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 858 | if (NULL == ty) { |
Damien Miller | 8140959 | 2004-08-15 19:12:52 +1000 | [diff] [blame] | 859 | logit("%s: tty not found", __func__); |
| 860 | return (0); |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 861 | } |
| 862 | #else /* FIXME */ |
| 863 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 864 | tty = ttyslot(); /* seems only to work for /dev/ttyp? style names */ |
| 865 | |
Damien Miller | e5192fa | 2000-08-29 14:30:37 +1100 | [diff] [blame] | 866 | #endif /* HAVE_GETTTYENT */ |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 867 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 868 | if (tty > 0 && (fd = open(UTMP_FILE, O_RDWR|O_CREAT, 0644)) >= 0) { |
Damien Miller | 8140959 | 2004-08-15 19:12:52 +1000 | [diff] [blame] | 869 | off_t pos, ret; |
| 870 | |
| 871 | pos = (off_t)tty * sizeof(struct utmp); |
| 872 | if ((ret = lseek(fd, pos, SEEK_SET)) == -1) { |
Damien Miller | b0419f2 | 2004-08-23 21:53:28 +1000 | [diff] [blame] | 873 | logit("%s: lseek: %s", __func__, strerror(errno)); |
Damien Miller | 4a06f92 | 2011-01-02 21:43:59 +1100 | [diff] [blame] | 874 | close(fd); |
Damien Miller | 8140959 | 2004-08-15 19:12:52 +1000 | [diff] [blame] | 875 | return (0); |
| 876 | } |
| 877 | if (ret != pos) { |
Damien Miller | 94cf4c8 | 2005-07-17 17:04:47 +1000 | [diff] [blame] | 878 | logit("%s: Couldn't seek to tty %d slot in %s", |
Damien Miller | b0419f2 | 2004-08-23 21:53:28 +1000 | [diff] [blame] | 879 | __func__, tty, UTMP_FILE); |
Damien Miller | 4a06f92 | 2011-01-02 21:43:59 +1100 | [diff] [blame] | 880 | close(fd); |
Damien Miller | 8140959 | 2004-08-15 19:12:52 +1000 | [diff] [blame] | 881 | return (0); |
| 882 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 883 | /* |
| 884 | * Prevent luser from zero'ing out ut_host. |
| 885 | * 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] | 886 | * and ut_line and ut_name match, preserve the old ut_line. |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 887 | */ |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 888 | if (atomicio(read, fd, &old_ut, sizeof(old_ut)) == sizeof(old_ut) && |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 889 | (ut->ut_host[0] == '\0') && (old_ut.ut_host[0] != '\0') && |
| 890 | (strncmp(old_ut.ut_line, ut->ut_line, sizeof(ut->ut_line)) == 0) && |
| 891 | (strncmp(old_ut.ut_name, ut->ut_name, sizeof(ut->ut_name)) == 0)) |
| 892 | memcpy(ut->ut_host, old_ut.ut_host, sizeof(ut->ut_host)); |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 893 | |
Damien Miller | 8140959 | 2004-08-15 19:12:52 +1000 | [diff] [blame] | 894 | if ((ret = lseek(fd, pos, SEEK_SET)) == -1) { |
Damien Miller | b0419f2 | 2004-08-23 21:53:28 +1000 | [diff] [blame] | 895 | logit("%s: lseek: %s", __func__, strerror(errno)); |
Damien Miller | 4a06f92 | 2011-01-02 21:43:59 +1100 | [diff] [blame] | 896 | close(fd); |
Damien Miller | 8140959 | 2004-08-15 19:12:52 +1000 | [diff] [blame] | 897 | return (0); |
| 898 | } |
| 899 | if (ret != pos) { |
Damien Miller | b0419f2 | 2004-08-23 21:53:28 +1000 | [diff] [blame] | 900 | logit("%s: Couldn't seek to tty %d slot in %s", |
Damien Miller | 8140959 | 2004-08-15 19:12:52 +1000 | [diff] [blame] | 901 | __func__, tty, UTMP_FILE); |
Damien Miller | 4a06f92 | 2011-01-02 21:43:59 +1100 | [diff] [blame] | 902 | close(fd); |
Damien Miller | 8140959 | 2004-08-15 19:12:52 +1000 | [diff] [blame] | 903 | return (0); |
| 904 | } |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 905 | if (atomicio(vwrite, fd, ut, sizeof(*ut)) != sizeof(*ut)) { |
Damien Miller | 8140959 | 2004-08-15 19:12:52 +1000 | [diff] [blame] | 906 | logit("%s: error writing %s: %s", __func__, |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 907 | UTMP_FILE, strerror(errno)); |
Damien Miller | 4a06f92 | 2011-01-02 21:43:59 +1100 | [diff] [blame] | 908 | close(fd); |
| 909 | return (0); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 910 | } |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 911 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 912 | close(fd); |
| 913 | return (1); |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 914 | } else { |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 915 | return (0); |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 916 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 917 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 918 | # endif /* UTMP_USE_LIBRARY */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 919 | |
| 920 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 921 | utmp_perform_login(struct logininfo *li) |
| 922 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 923 | struct utmp ut; |
| 924 | |
| 925 | construct_utmp(li, &ut); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 926 | # ifdef UTMP_USE_LIBRARY |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 927 | if (!utmp_write_library(li, &ut)) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 928 | logit("%s: utmp_write_library() failed", __func__); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 929 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 930 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 931 | # else |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 932 | if (!utmp_write_direct(li, &ut)) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 933 | logit("%s: utmp_write_direct() failed", __func__); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 934 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 935 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 936 | # endif |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 937 | return (1); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 938 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 939 | |
| 940 | |
| 941 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 942 | utmp_perform_logout(struct logininfo *li) |
| 943 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 944 | struct utmp ut; |
| 945 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 946 | construct_utmp(li, &ut); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 947 | # ifdef UTMP_USE_LIBRARY |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 948 | if (!utmp_write_library(li, &ut)) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 949 | logit("%s: utmp_write_library() failed", __func__); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 950 | return (0); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 951 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 952 | # else |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 953 | if (!utmp_write_direct(li, &ut)) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 954 | logit("%s: utmp_write_direct() failed", __func__); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 955 | return (0); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 956 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 957 | # endif |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 958 | return (1); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 959 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 960 | |
| 961 | |
| 962 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 963 | utmp_write_entry(struct logininfo *li) |
| 964 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 965 | switch(li->type) { |
| 966 | case LTYPE_LOGIN: |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 967 | return (utmp_perform_login(li)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 968 | |
| 969 | case LTYPE_LOGOUT: |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 970 | return (utmp_perform_logout(li)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 971 | |
| 972 | default: |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 973 | logit("%s: invalid type field", __func__); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 974 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 975 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 976 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 977 | #endif /* USE_UTMP */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 978 | |
| 979 | |
| 980 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 981 | ** Low-level utmpx functions |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 982 | **/ |
| 983 | |
| 984 | /* not much point if we don't want utmpx entries */ |
| 985 | #ifdef USE_UTMPX |
| 986 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 987 | /* if we have the wherewithall, use pututxline etc. */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 988 | # if !defined(DISABLE_PUTUTXLINE) && defined(HAVE_SETUTXENT) && \ |
| 989 | defined(HAVE_PUTUTXLINE) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 990 | # define UTMPX_USE_LIBRARY |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 991 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 992 | |
| 993 | |
| 994 | /* write a utmpx entry with the system's help (pututxline() and pals) */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 995 | # ifdef UTMPX_USE_LIBRARY |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 996 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 997 | utmpx_write_library(struct logininfo *li, struct utmpx *utx) |
| 998 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 999 | setutxent(); |
| 1000 | pututxline(utx); |
| 1001 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1002 | # ifdef HAVE_ENDUTXENT |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1003 | endutxent(); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1004 | # endif |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1005 | return (1); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1006 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1007 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1008 | # else /* UTMPX_USE_LIBRARY */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1009 | |
| 1010 | /* write a utmp entry direct to the file */ |
| 1011 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1012 | utmpx_write_direct(struct logininfo *li, struct utmpx *utx) |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1013 | { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1014 | logit("%s: not implemented!", __func__); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1015 | return (0); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1016 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1017 | # endif /* UTMPX_USE_LIBRARY */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1018 | |
| 1019 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1020 | utmpx_perform_login(struct logininfo *li) |
| 1021 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1022 | struct utmpx utx; |
| 1023 | |
| 1024 | construct_utmpx(li, &utx); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1025 | # ifdef UTMPX_USE_LIBRARY |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1026 | if (!utmpx_write_library(li, &utx)) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1027 | logit("%s: utmp_write_library() failed", __func__); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1028 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1029 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1030 | # else |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1031 | if (!utmpx_write_direct(li, &ut)) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1032 | logit("%s: utmp_write_direct() failed", __func__); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1033 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1034 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1035 | # endif |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1036 | return (1); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1037 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1038 | |
| 1039 | |
| 1040 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1041 | utmpx_perform_logout(struct logininfo *li) |
| 1042 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1043 | struct utmpx utx; |
| 1044 | |
Tim Rice | e06ae4a | 2002-02-24 17:56:46 -0800 | [diff] [blame] | 1045 | construct_utmpx(li, &utx); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1046 | # ifdef HAVE_ID_IN_UTMPX |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1047 | line_abbrevname(utx.ut_id, li->line, sizeof(utx.ut_id)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1048 | # endif |
| 1049 | # ifdef HAVE_TYPE_IN_UTMPX |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1050 | utx.ut_type = DEAD_PROCESS; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1051 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1052 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1053 | # ifdef UTMPX_USE_LIBRARY |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1054 | utmpx_write_library(li, &utx); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1055 | # else |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1056 | utmpx_write_direct(li, &utx); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1057 | # endif |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1058 | return (1); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1059 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1060 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1061 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1062 | utmpx_write_entry(struct logininfo *li) |
| 1063 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1064 | switch(li->type) { |
| 1065 | case LTYPE_LOGIN: |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1066 | return (utmpx_perform_login(li)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1067 | case LTYPE_LOGOUT: |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1068 | return (utmpx_perform_logout(li)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1069 | default: |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1070 | logit("%s: invalid type field", __func__); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1071 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1072 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1073 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1074 | #endif /* USE_UTMPX */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1075 | |
| 1076 | |
| 1077 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1078 | ** Low-level wtmp functions |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1079 | **/ |
| 1080 | |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1081 | #ifdef USE_WTMP |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1082 | |
Damien Miller | 94cf4c8 | 2005-07-17 17:04:47 +1000 | [diff] [blame] | 1083 | /* |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1084 | * Write a wtmp entry direct to the end of the file |
| 1085 | * This is a slight modification of code in OpenBSD's logwtmp.c |
| 1086 | */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1087 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1088 | wtmp_write(struct logininfo *li, struct utmp *ut) |
| 1089 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1090 | struct stat buf; |
| 1091 | int fd, ret = 1; |
| 1092 | |
| 1093 | if ((fd = open(WTMP_FILE, O_WRONLY|O_APPEND, 0)) < 0) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1094 | logit("%s: problem writing %s: %s", __func__, |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1095 | WTMP_FILE, strerror(errno)); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1096 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1097 | } |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1098 | if (fstat(fd, &buf) == 0) |
Darren Tucker | 8661b56 | 2003-07-06 15:20:46 +1000 | [diff] [blame] | 1099 | if (atomicio(vwrite, fd, ut, sizeof(*ut)) != sizeof(*ut)) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1100 | ftruncate(fd, buf.st_size); |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1101 | logit("%s: problem writing %s: %s", __func__, |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1102 | WTMP_FILE, strerror(errno)); |
| 1103 | ret = 0; |
| 1104 | } |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1105 | close(fd); |
| 1106 | return (ret); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1107 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1108 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1109 | static int |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1110 | wtmp_perform_login(struct logininfo *li) |
| 1111 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1112 | struct utmp ut; |
| 1113 | |
| 1114 | construct_utmp(li, &ut); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1115 | return (wtmp_write(li, &ut)); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1116 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1117 | |
| 1118 | |
| 1119 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1120 | wtmp_perform_logout(struct logininfo *li) |
| 1121 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1122 | struct utmp ut; |
| 1123 | |
| 1124 | construct_utmp(li, &ut); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1125 | return (wtmp_write(li, &ut)); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1126 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1127 | |
| 1128 | |
| 1129 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1130 | wtmp_write_entry(struct logininfo *li) |
| 1131 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1132 | switch(li->type) { |
| 1133 | case LTYPE_LOGIN: |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1134 | return (wtmp_perform_login(li)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1135 | case LTYPE_LOGOUT: |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1136 | return (wtmp_perform_logout(li)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1137 | default: |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1138 | logit("%s: invalid type field", __func__); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1139 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1140 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1141 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1142 | |
| 1143 | |
Damien Miller | 94cf4c8 | 2005-07-17 17:04:47 +1000 | [diff] [blame] | 1144 | /* |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1145 | * Notes on fetching login data from wtmp/wtmpx |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1146 | * |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1147 | * Logouts are usually recorded with (amongst other things) a blank |
| 1148 | * username on a given tty line. However, some systems (HP-UX is one) |
| 1149 | * leave all fields set, but change the ut_type field to DEAD_PROCESS. |
| 1150 | * |
| 1151 | * Since we're only looking for logins here, we know that the username |
| 1152 | * must be set correctly. On systems that leave it in, we check for |
| 1153 | * ut_type==USER_PROCESS (indicating a login.) |
| 1154 | * |
| 1155 | * Portability: Some systems may set something other than USER_PROCESS |
| 1156 | * to indicate a login process. I don't know of any as I write. Also, |
| 1157 | * it's possible that some systems may both leave the username in |
| 1158 | * place and not have ut_type. |
| 1159 | */ |
| 1160 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1161 | /* return true if this wtmp entry indicates a login */ |
| 1162 | static int |
| 1163 | wtmp_islogin(struct logininfo *li, struct utmp *ut) |
| 1164 | { |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1165 | if (strncmp(li->username, ut->ut_name, |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1166 | MIN_SIZEOF(li->username, ut->ut_name)) == 0) { |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1167 | # ifdef HAVE_TYPE_IN_UTMP |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1168 | if (ut->ut_type & USER_PROCESS) |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1169 | return (1); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1170 | # else |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1171 | return (1); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1172 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1173 | } |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1174 | return (0); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1175 | } |
| 1176 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1177 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1178 | wtmp_get_entry(struct logininfo *li) |
| 1179 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1180 | struct stat st; |
| 1181 | struct utmp ut; |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1182 | int fd, found = 0; |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1183 | |
| 1184 | /* Clear the time entries in our logininfo */ |
| 1185 | li->tv_sec = li->tv_usec = 0; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1186 | |
| 1187 | if ((fd = open(WTMP_FILE, O_RDONLY)) < 0) { |
Damien Miller | 94cf4c8 | 2005-07-17 17:04:47 +1000 | [diff] [blame] | 1188 | logit("%s: problem opening %s: %s", __func__, |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1189 | WTMP_FILE, strerror(errno)); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1190 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1191 | } |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1192 | if (fstat(fd, &st) != 0) { |
Damien Miller | 94cf4c8 | 2005-07-17 17:04:47 +1000 | [diff] [blame] | 1193 | logit("%s: couldn't stat %s: %s", __func__, |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1194 | WTMP_FILE, strerror(errno)); |
| 1195 | close(fd); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1196 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1197 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1198 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1199 | /* Seek to the start of the last struct utmp */ |
Kevin Steves | 5217265 | 2001-10-02 00:29:00 +0000 | [diff] [blame] | 1200 | if (lseek(fd, -(off_t)sizeof(struct utmp), SEEK_END) == -1) { |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1201 | /* Looks like we've got a fresh wtmp file */ |
| 1202 | close(fd); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1203 | return (0); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1204 | } |
| 1205 | |
| 1206 | while (!found) { |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 1207 | if (atomicio(read, fd, &ut, sizeof(ut)) != sizeof(ut)) { |
Damien Miller | 94cf4c8 | 2005-07-17 17:04:47 +1000 | [diff] [blame] | 1208 | logit("%s: read of %s failed: %s", __func__, |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1209 | WTMP_FILE, strerror(errno)); |
| 1210 | close (fd); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1211 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1212 | } |
Damien Miller | 4a06f92 | 2011-01-02 21:43:59 +1100 | [diff] [blame] | 1213 | if (wtmp_islogin(li, &ut) ) { |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1214 | found = 1; |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1215 | /* |
| 1216 | * We've already checked for a time in struct |
| 1217 | * utmp, in login_getlast() |
| 1218 | */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1219 | # ifdef HAVE_TIME_IN_UTMP |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1220 | li->tv_sec = ut.ut_time; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1221 | # else |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1222 | # if HAVE_TV_IN_UTMP |
| 1223 | li->tv_sec = ut.ut_tv.tv_sec; |
| 1224 | # endif |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1225 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1226 | line_fullname(li->line, ut.ut_line, |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1227 | MIN_SIZEOF(li->line, ut.ut_line)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1228 | # ifdef HAVE_HOST_IN_UTMP |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1229 | strlcpy(li->hostname, ut.ut_host, |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1230 | MIN_SIZEOF(li->hostname, ut.ut_host)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1231 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1232 | continue; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1233 | } |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1234 | /* Seek back 2 x struct utmp */ |
Kevin Steves | 5217265 | 2001-10-02 00:29:00 +0000 | [diff] [blame] | 1235 | if (lseek(fd, -(off_t)(2 * sizeof(struct utmp)), SEEK_CUR) == -1) { |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1236 | /* We've found the start of the file, so quit */ |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1237 | close(fd); |
| 1238 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1239 | } |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1240 | } |
| 1241 | |
| 1242 | /* We found an entry. Tidy up and return */ |
| 1243 | close(fd); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1244 | return (1); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1245 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1246 | # endif /* USE_WTMP */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1247 | |
| 1248 | |
| 1249 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1250 | ** Low-level wtmpx functions |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1251 | **/ |
| 1252 | |
| 1253 | #ifdef USE_WTMPX |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1254 | /* |
| 1255 | * Write a wtmpx entry direct to the end of the file |
| 1256 | * This is a slight modification of code in OpenBSD's logwtmp.c |
| 1257 | */ |
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 | wtmpx_write(struct logininfo *li, struct utmpx *utx) |
| 1260 | { |
Darren Tucker | c28b88a | 2004-02-10 16:49:35 +1100 | [diff] [blame] | 1261 | #ifndef HAVE_UPDWTMPX |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1262 | struct stat buf; |
| 1263 | int fd, ret = 1; |
| 1264 | |
| 1265 | if ((fd = open(WTMPX_FILE, O_WRONLY|O_APPEND, 0)) < 0) { |
Damien Miller | 94cf4c8 | 2005-07-17 17:04:47 +1000 | [diff] [blame] | 1266 | logit("%s: problem opening %s: %s", __func__, |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1267 | WTMPX_FILE, strerror(errno)); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1268 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1269 | } |
| 1270 | |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1271 | if (fstat(fd, &buf) == 0) |
Darren Tucker | 8661b56 | 2003-07-06 15:20:46 +1000 | [diff] [blame] | 1272 | if (atomicio(vwrite, fd, utx, sizeof(*utx)) != sizeof(*utx)) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1273 | ftruncate(fd, buf.st_size); |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1274 | logit("%s: problem writing %s: %s", __func__, |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1275 | WTMPX_FILE, strerror(errno)); |
| 1276 | ret = 0; |
| 1277 | } |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1278 | close(fd); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1279 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1280 | return (ret); |
Darren Tucker | c28b88a | 2004-02-10 16:49:35 +1100 | [diff] [blame] | 1281 | #else |
| 1282 | updwtmpx(WTMPX_FILE, utx); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1283 | return (1); |
Darren Tucker | c28b88a | 2004-02-10 16:49:35 +1100 | [diff] [blame] | 1284 | #endif |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1285 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1286 | |
| 1287 | |
| 1288 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1289 | wtmpx_perform_login(struct logininfo *li) |
| 1290 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1291 | struct utmpx utx; |
| 1292 | |
| 1293 | construct_utmpx(li, &utx); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1294 | return (wtmpx_write(li, &utx)); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1295 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1296 | |
| 1297 | |
| 1298 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1299 | wtmpx_perform_logout(struct logininfo *li) |
| 1300 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1301 | struct utmpx utx; |
| 1302 | |
| 1303 | construct_utmpx(li, &utx); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1304 | return (wtmpx_write(li, &utx)); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1305 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1306 | |
| 1307 | |
| 1308 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1309 | wtmpx_write_entry(struct logininfo *li) |
| 1310 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1311 | switch(li->type) { |
| 1312 | case LTYPE_LOGIN: |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1313 | return (wtmpx_perform_login(li)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1314 | case LTYPE_LOGOUT: |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1315 | return (wtmpx_perform_logout(li)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1316 | default: |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1317 | logit("%s: invalid type field", __func__); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1318 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1319 | } |
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 | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1322 | /* Please see the notes above wtmp_islogin() for information about the |
| 1323 | next two functions */ |
| 1324 | |
| 1325 | /* Return true if this wtmpx entry indicates a login */ |
| 1326 | static int |
| 1327 | wtmpx_islogin(struct logininfo *li, struct utmpx *utx) |
| 1328 | { |
Darren Tucker | 0b8a226 | 2010-01-09 18:18:04 +1100 | [diff] [blame] | 1329 | if (strncmp(li->username, utx->ut_user, |
| 1330 | MIN_SIZEOF(li->username, utx->ut_user)) == 0 ) { |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1331 | # ifdef HAVE_TYPE_IN_UTMPX |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1332 | if (utx->ut_type == USER_PROCESS) |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1333 | return (1); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1334 | # else |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1335 | return (1); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1336 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1337 | } |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1338 | return (0); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1339 | } |
| 1340 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1341 | |
| 1342 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1343 | wtmpx_get_entry(struct logininfo *li) |
| 1344 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1345 | struct stat st; |
| 1346 | struct utmpx utx; |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1347 | int fd, found=0; |
| 1348 | |
| 1349 | /* Clear the time entries */ |
| 1350 | li->tv_sec = li->tv_usec = 0; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1351 | |
| 1352 | if ((fd = open(WTMPX_FILE, O_RDONLY)) < 0) { |
Damien Miller | 94cf4c8 | 2005-07-17 17:04:47 +1000 | [diff] [blame] | 1353 | logit("%s: problem opening %s: %s", __func__, |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1354 | WTMPX_FILE, strerror(errno)); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1355 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1356 | } |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1357 | if (fstat(fd, &st) != 0) { |
Damien Miller | 94cf4c8 | 2005-07-17 17:04:47 +1000 | [diff] [blame] | 1358 | logit("%s: couldn't stat %s: %s", __func__, |
Tim Rice | cdb8294 | 2002-07-14 15:33:20 -0700 | [diff] [blame] | 1359 | WTMPX_FILE, strerror(errno)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1360 | close(fd); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1361 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1362 | } |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1363 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1364 | /* Seek to the start of the last struct utmpx */ |
Kevin Steves | 5217265 | 2001-10-02 00:29:00 +0000 | [diff] [blame] | 1365 | if (lseek(fd, -(off_t)sizeof(struct utmpx), SEEK_END) == -1 ) { |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1366 | /* probably a newly rotated wtmpx file */ |
| 1367 | close(fd); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1368 | return (0); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1369 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1370 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1371 | while (!found) { |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 1372 | if (atomicio(read, fd, &utx, sizeof(utx)) != sizeof(utx)) { |
Damien Miller | 94cf4c8 | 2005-07-17 17:04:47 +1000 | [diff] [blame] | 1373 | logit("%s: read of %s failed: %s", __func__, |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1374 | WTMPX_FILE, strerror(errno)); |
| 1375 | close (fd); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1376 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1377 | } |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1378 | /* |
Damien Miller | 94cf4c8 | 2005-07-17 17:04:47 +1000 | [diff] [blame] | 1379 | * Logouts are recorded as a blank username on a particular |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1380 | * line. So, we just need to find the username in struct utmpx |
| 1381 | */ |
| 1382 | if (wtmpx_islogin(li, &utx)) { |
Tim Rice | 370e0ba | 2002-07-14 15:50:51 -0700 | [diff] [blame] | 1383 | found = 1; |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1384 | # if defined(HAVE_TV_IN_UTMPX) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1385 | li->tv_sec = utx.ut_tv.tv_sec; |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1386 | # elif defined(HAVE_TIME_IN_UTMPX) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1387 | li->tv_sec = utx.ut_time; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1388 | # endif |
Damien Miller | 1a13225 | 2000-06-13 21:23:17 +1000 | [diff] [blame] | 1389 | line_fullname(li->line, utx.ut_line, sizeof(li->line)); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1390 | # if defined(HAVE_HOST_IN_UTMPX) |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1391 | strlcpy(li->hostname, utx.ut_host, |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1392 | MIN_SIZEOF(li->hostname, utx.ut_host)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1393 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1394 | continue; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1395 | } |
Kevin Steves | 5217265 | 2001-10-02 00:29:00 +0000 | [diff] [blame] | 1396 | if (lseek(fd, -(off_t)(2 * sizeof(struct utmpx)), SEEK_CUR) == -1) { |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1397 | close(fd); |
| 1398 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1399 | } |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1400 | } |
| 1401 | |
| 1402 | close(fd); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1403 | return (1); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1404 | } |
Damien Miller | d5bf307 | 2000-06-07 21:32:13 +1000 | [diff] [blame] | 1405 | #endif /* USE_WTMPX */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1406 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1407 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1408 | ** Low-level libutil login() functions |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1409 | **/ |
| 1410 | |
| 1411 | #ifdef USE_LOGIN |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1412 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1413 | syslogin_perform_login(struct logininfo *li) |
| 1414 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1415 | struct utmp *ut; |
| 1416 | |
Damien Miller | b0aae33 | 2004-09-12 15:26:00 +1000 | [diff] [blame] | 1417 | ut = xmalloc(sizeof(*ut)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1418 | construct_utmp(li, ut); |
| 1419 | login(ut); |
Damien Miller | f211efc | 2003-03-10 11:23:06 +1100 | [diff] [blame] | 1420 | free(ut); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1421 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1422 | return (1); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1423 | } |
| 1424 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1425 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1426 | syslogin_perform_logout(struct logininfo *li) |
| 1427 | { |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1428 | # ifdef HAVE_LOGOUT |
Darren Tucker | 4d2f361 | 2004-04-08 10:57:05 +1000 | [diff] [blame] | 1429 | char line[UT_LINESIZE]; |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1430 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1431 | (void)line_stripname(line, li->line, sizeof(line)); |
| 1432 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1433 | if (!logout(line)) |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1434 | logit("%s: logout() returned an error", __func__); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1435 | # ifdef HAVE_LOGWTMP |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1436 | else |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1437 | logwtmp(line, "", ""); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1438 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1439 | /* FIXME: (ATL - if the need arises) What to do if we have |
| 1440 | * login, but no logout? what if logout but no logwtmp? All |
| 1441 | * routines are in libutil so they should all be there, |
| 1442 | * but... */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1443 | # endif |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1444 | return (1); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1445 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1446 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1447 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1448 | syslogin_write_entry(struct logininfo *li) |
| 1449 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1450 | switch (li->type) { |
| 1451 | case LTYPE_LOGIN: |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1452 | return (syslogin_perform_login(li)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1453 | case LTYPE_LOGOUT: |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1454 | return (syslogin_perform_logout(li)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1455 | default: |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1456 | logit("%s: Invalid type field", __func__); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1457 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1458 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1459 | } |
Damien Miller | d5bf307 | 2000-06-07 21:32:13 +1000 | [diff] [blame] | 1460 | #endif /* USE_LOGIN */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1461 | |
| 1462 | /* end of file log-syslogin.c */ |
| 1463 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1464 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1465 | ** Low-level lastlog functions |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1466 | **/ |
| 1467 | |
| 1468 | #ifdef USE_LASTLOG |
| 1469 | |
Damien Miller | 20e231f | 2009-02-12 13:12:21 +1100 | [diff] [blame] | 1470 | #if !defined(LASTLOG_WRITE_PUTUTXLINE) || !defined(HAVE_GETLASTLOGXBYNAME) |
| 1471 | /* open the file (using filemode) and seek to the login entry */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1472 | static int |
Damien Miller | 20e231f | 2009-02-12 13:12:21 +1100 | [diff] [blame] | 1473 | lastlog_openseek(struct logininfo *li, int *fd, int filemode) |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1474 | { |
Damien Miller | 20e231f | 2009-02-12 13:12:21 +1100 | [diff] [blame] | 1475 | off_t offset; |
| 1476 | char lastlog_file[1024]; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1477 | struct stat st; |
| 1478 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1479 | if (stat(LASTLOG_FILE, &st) != 0) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1480 | logit("%s: Couldn't stat %s: %s", __func__, |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1481 | LASTLOG_FILE, strerror(errno)); |
| 1482 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1483 | } |
Damien Miller | 20e231f | 2009-02-12 13:12:21 +1100 | [diff] [blame] | 1484 | if (S_ISDIR(st.st_mode)) { |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1485 | snprintf(lastlog_file, sizeof(lastlog_file), "%s/%s", |
| 1486 | LASTLOG_FILE, li->username); |
Damien Miller | 20e231f | 2009-02-12 13:12:21 +1100 | [diff] [blame] | 1487 | } else if (S_ISREG(st.st_mode)) { |
| 1488 | strlcpy(lastlog_file, LASTLOG_FILE, sizeof(lastlog_file)); |
| 1489 | } else { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1490 | logit("%s: %.100s is not a file or directory!", __func__, |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1491 | LASTLOG_FILE); |
| 1492 | return (0); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1493 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1494 | |
Damien Miller | 405dc60 | 2003-04-09 21:12:52 +1000 | [diff] [blame] | 1495 | *fd = open(lastlog_file, filemode, 0600); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1496 | if (*fd < 0) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1497 | debug("%s: Couldn't open %s: %s", __func__, |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1498 | lastlog_file, strerror(errno)); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1499 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1500 | } |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1501 | |
Damien Miller | 20e231f | 2009-02-12 13:12:21 +1100 | [diff] [blame] | 1502 | if (S_ISREG(st.st_mode)) { |
Damien Miller | e477ef6 | 2000-08-15 10:21:17 +1000 | [diff] [blame] | 1503 | /* find this uid's offset in the lastlog file */ |
Damien Miller | 34ee420 | 2010-11-05 10:52:37 +1100 | [diff] [blame] | 1504 | offset = (off_t) ((u_long)li->uid * sizeof(struct lastlog)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1505 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1506 | if (lseek(*fd, offset, SEEK_SET) != offset) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1507 | logit("%s: %s->lseek(): %s", __func__, |
| 1508 | lastlog_file, strerror(errno)); |
Damien Miller | 4a06f92 | 2011-01-02 21:43:59 +1100 | [diff] [blame] | 1509 | close(*fd); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1510 | return (0); |
Damien Miller | e477ef6 | 2000-08-15 10:21:17 +1000 | [diff] [blame] | 1511 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1512 | } |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1513 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1514 | return (1); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1515 | } |
Damien Miller | 20e231f | 2009-02-12 13:12:21 +1100 | [diff] [blame] | 1516 | #endif /* !LASTLOG_WRITE_PUTUTXLINE || !HAVE_GETLASTLOGXBYNAME */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1517 | |
Damien Miller | 20e231f | 2009-02-12 13:12:21 +1100 | [diff] [blame] | 1518 | #ifdef LASTLOG_WRITE_PUTUTXLINE |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1519 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1520 | lastlog_write_entry(struct logininfo *li) |
| 1521 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1522 | switch(li->type) { |
| 1523 | case LTYPE_LOGIN: |
Damien Miller | 20e231f | 2009-02-12 13:12:21 +1100 | [diff] [blame] | 1524 | return 1; /* lastlog written by pututxline */ |
| 1525 | default: |
| 1526 | logit("lastlog_write_entry: Invalid type field"); |
| 1527 | return 0; |
| 1528 | } |
| 1529 | } |
| 1530 | #else /* LASTLOG_WRITE_PUTUTXLINE */ |
| 1531 | int |
| 1532 | lastlog_write_entry(struct logininfo *li) |
| 1533 | { |
| 1534 | struct lastlog last; |
| 1535 | int fd; |
| 1536 | |
| 1537 | switch(li->type) { |
| 1538 | case LTYPE_LOGIN: |
| 1539 | /* create our struct lastlog */ |
| 1540 | memset(&last, '\0', sizeof(last)); |
| 1541 | line_stripname(last.ll_line, li->line, sizeof(last.ll_line)); |
| 1542 | strlcpy(last.ll_host, li->hostname, |
| 1543 | MIN_SIZEOF(last.ll_host, li->hostname)); |
| 1544 | last.ll_time = li->tv_sec; |
| 1545 | |
| 1546 | if (!lastlog_openseek(li, &fd, O_RDWR|O_CREAT)) |
| 1547 | return (0); |
| 1548 | |
| 1549 | /* write the entry */ |
| 1550 | if (atomicio(vwrite, fd, &last, sizeof(last)) != sizeof(last)) { |
| 1551 | close(fd); |
| 1552 | logit("%s: Error writing to %s: %s", __func__, |
| 1553 | LASTLOG_FILE, strerror(errno)); |
| 1554 | return (0); |
| 1555 | } |
| 1556 | |
| 1557 | close(fd); |
| 1558 | return (1); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1559 | default: |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1560 | logit("%s: Invalid type field", __func__); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1561 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1562 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1563 | } |
Damien Miller | 20e231f | 2009-02-12 13:12:21 +1100 | [diff] [blame] | 1564 | #endif /* LASTLOG_WRITE_PUTUTXLINE */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1565 | |
Damien Miller | 20e231f | 2009-02-12 13:12:21 +1100 | [diff] [blame] | 1566 | #ifdef HAVE_GETLASTLOGXBYNAME |
| 1567 | int |
| 1568 | lastlog_get_entry(struct logininfo *li) |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1569 | { |
Damien Miller | 20e231f | 2009-02-12 13:12:21 +1100 | [diff] [blame] | 1570 | struct lastlogx l, *ll; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1571 | |
Damien Miller | 20e231f | 2009-02-12 13:12:21 +1100 | [diff] [blame] | 1572 | if ((ll = getlastlogxbyname(li->username, &l)) == NULL) { |
| 1573 | memset(&l, '\0', sizeof(l)); |
| 1574 | ll = &l; |
| 1575 | } |
| 1576 | line_fullname(li->line, ll->ll_line, sizeof(li->line)); |
| 1577 | strlcpy(li->hostname, ll->ll_host, |
| 1578 | MIN_SIZEOF(li->hostname, ll->ll_host)); |
| 1579 | li->tv_sec = ll->ll_tv.tv_sec; |
| 1580 | li->tv_usec = ll->ll_tv.tv_usec; |
| 1581 | return (1); |
| 1582 | } |
| 1583 | #else /* HAVE_GETLASTLOGXBYNAME */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1584 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1585 | lastlog_get_entry(struct logininfo *li) |
| 1586 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1587 | struct lastlog last; |
Damien Miller | 7df881d | 2003-01-07 16:46:58 +1100 | [diff] [blame] | 1588 | int fd, ret; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1589 | |
Damien Miller | 3a8a5cd | 2001-10-22 16:49:22 +1000 | [diff] [blame] | 1590 | if (!lastlog_openseek(li, &fd, O_RDONLY)) |
Damien Miller | 7df881d | 2003-01-07 16:46:58 +1100 | [diff] [blame] | 1591 | return (0); |
Damien Miller | 3a8a5cd | 2001-10-22 16:49:22 +1000 | [diff] [blame] | 1592 | |
Damien Miller | 7df881d | 2003-01-07 16:46:58 +1100 | [diff] [blame] | 1593 | ret = atomicio(read, fd, &last, sizeof(last)); |
Damien Miller | 3a8a5cd | 2001-10-22 16:49:22 +1000 | [diff] [blame] | 1594 | close(fd); |
| 1595 | |
Damien Miller | 7df881d | 2003-01-07 16:46:58 +1100 | [diff] [blame] | 1596 | switch (ret) { |
| 1597 | case 0: |
| 1598 | memset(&last, '\0', sizeof(last)); |
| 1599 | /* FALLTHRU */ |
| 1600 | case sizeof(last): |
Damien Miller | 20e231f | 2009-02-12 13:12:21 +1100 | [diff] [blame] | 1601 | line_fullname(li->line, last.ll_line, sizeof(li->line)); |
| 1602 | strlcpy(li->hostname, last.ll_host, |
| 1603 | MIN_SIZEOF(li->hostname, last.ll_host)); |
| 1604 | li->tv_sec = last.ll_time; |
Damien Miller | 7df881d | 2003-01-07 16:46:58 +1100 | [diff] [blame] | 1605 | return (1); |
| 1606 | case -1: |
Damien Miller | a8e06ce | 2003-11-21 23:48:55 +1100 | [diff] [blame] | 1607 | error("%s: Error reading from %s: %s", __func__, |
Damien Miller | 7df881d | 2003-01-07 16:46:58 +1100 | [diff] [blame] | 1608 | LASTLOG_FILE, strerror(errno)); |
| 1609 | return (0); |
| 1610 | default: |
| 1611 | error("%s: Error reading from %s: Expecting %d, got %d", |
Darren Tucker | efc1747 | 2005-11-22 19:55:13 +1100 | [diff] [blame] | 1612 | __func__, LASTLOG_FILE, (int)sizeof(last), ret); |
Damien Miller | 7df881d | 2003-01-07 16:46:58 +1100 | [diff] [blame] | 1613 | return (0); |
| 1614 | } |
Damien Miller | 3a8a5cd | 2001-10-22 16:49:22 +1000 | [diff] [blame] | 1615 | |
Damien Miller | 7df881d | 2003-01-07 16:46:58 +1100 | [diff] [blame] | 1616 | /* NOTREACHED */ |
| 1617 | return (0); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1618 | } |
Damien Miller | 20e231f | 2009-02-12 13:12:21 +1100 | [diff] [blame] | 1619 | #endif /* HAVE_GETLASTLOGXBYNAME */ |
Damien Miller | d5bf307 | 2000-06-07 21:32:13 +1000 | [diff] [blame] | 1620 | #endif /* USE_LASTLOG */ |
Darren Tucker | 2fba993 | 2005-02-02 23:30:24 +1100 | [diff] [blame] | 1621 | |
Darren Tucker | 261d93a | 2010-04-09 18:13:27 +1000 | [diff] [blame] | 1622 | #if defined(USE_UTMPX) && defined(HAVE_SETUTXDB) && \ |
| 1623 | defined(UTXDB_LASTLOGIN) && defined(HAVE_GETUTXUSER) |
| 1624 | int |
| 1625 | utmpx_get_entry(struct logininfo *li) |
| 1626 | { |
| 1627 | struct utmpx *utx; |
| 1628 | |
| 1629 | if (setutxdb(UTXDB_LASTLOGIN, NULL) != 0) |
| 1630 | return (0); |
| 1631 | utx = getutxuser(li->username); |
| 1632 | if (utx == NULL) { |
| 1633 | endutxent(); |
| 1634 | return (0); |
| 1635 | } |
| 1636 | |
| 1637 | line_fullname(li->line, utx->ut_line, |
| 1638 | MIN_SIZEOF(li->line, utx->ut_line)); |
| 1639 | strlcpy(li->hostname, utx->ut_host, |
| 1640 | MIN_SIZEOF(li->hostname, utx->ut_host)); |
| 1641 | li->tv_sec = utx->ut_tv.tv_sec; |
| 1642 | li->tv_usec = utx->ut_tv.tv_usec; |
| 1643 | endutxent(); |
| 1644 | return (1); |
| 1645 | } |
| 1646 | #endif /* USE_UTMPX && HAVE_SETUTXDB && UTXDB_LASTLOGIN && HAVE_GETUTXUSER */ |
| 1647 | |
Darren Tucker | 2fba993 | 2005-02-02 23:30:24 +1100 | [diff] [blame] | 1648 | #ifdef USE_BTMP |
| 1649 | /* |
| 1650 | * Logs failed login attempts in _PATH_BTMP if that exists. |
| 1651 | * The most common login failure is to give password instead of username. |
| 1652 | * So the _PATH_BTMP file checked for the correct permission, so that |
| 1653 | * only root can read it. |
| 1654 | */ |
| 1655 | |
| 1656 | void |
| 1657 | record_failed_login(const char *username, const char *hostname, |
| 1658 | const char *ttyn) |
| 1659 | { |
| 1660 | int fd; |
| 1661 | struct utmp ut; |
| 1662 | struct sockaddr_storage from; |
Darren Tucker | efc1747 | 2005-11-22 19:55:13 +1100 | [diff] [blame] | 1663 | socklen_t fromlen = sizeof(from); |
Darren Tucker | 2fba993 | 2005-02-02 23:30:24 +1100 | [diff] [blame] | 1664 | struct sockaddr_in *a4; |
| 1665 | struct sockaddr_in6 *a6; |
| 1666 | time_t t; |
| 1667 | struct stat fst; |
| 1668 | |
| 1669 | if (geteuid() != 0) |
| 1670 | return; |
| 1671 | if ((fd = open(_PATH_BTMP, O_WRONLY | O_APPEND)) < 0) { |
| 1672 | debug("Unable to open the btmp file %s: %s", _PATH_BTMP, |
| 1673 | strerror(errno)); |
| 1674 | return; |
| 1675 | } |
| 1676 | if (fstat(fd, &fst) < 0) { |
| 1677 | logit("%s: fstat of %s failed: %s", __func__, _PATH_BTMP, |
| 1678 | strerror(errno)); |
| 1679 | goto out; |
| 1680 | } |
Damien Miller | 88e341e | 2010-11-24 10:36:15 +1100 | [diff] [blame] | 1681 | if((fst.st_mode & (S_IXGRP | S_IRWXO)) || (fst.st_uid != 0)){ |
Darren Tucker | 2fba993 | 2005-02-02 23:30:24 +1100 | [diff] [blame] | 1682 | logit("Excess permission or bad ownership on file %s", |
| 1683 | _PATH_BTMP); |
| 1684 | goto out; |
| 1685 | } |
| 1686 | |
| 1687 | memset(&ut, 0, sizeof(ut)); |
| 1688 | /* strncpy because we don't necessarily want nul termination */ |
| 1689 | strncpy(ut.ut_user, username, sizeof(ut.ut_user)); |
| 1690 | strlcpy(ut.ut_line, "ssh:notty", sizeof(ut.ut_line)); |
| 1691 | |
| 1692 | time(&t); |
| 1693 | ut.ut_time = t; /* ut_time is not always a time_t */ |
| 1694 | ut.ut_type = LOGIN_PROCESS; |
| 1695 | ut.ut_pid = getpid(); |
| 1696 | |
| 1697 | /* strncpy because we don't necessarily want nul termination */ |
| 1698 | strncpy(ut.ut_host, hostname, sizeof(ut.ut_host)); |
| 1699 | |
| 1700 | if (packet_connection_is_on_socket() && |
| 1701 | getpeername(packet_get_connection_in(), |
| 1702 | (struct sockaddr *)&from, &fromlen) == 0) { |
| 1703 | ipv64_normalise_mapped(&from, &fromlen); |
| 1704 | if (from.ss_family == AF_INET) { |
| 1705 | a4 = (struct sockaddr_in *)&from; |
| 1706 | memcpy(&ut.ut_addr, &(a4->sin_addr), |
| 1707 | MIN_SIZEOF(ut.ut_addr, a4->sin_addr)); |
| 1708 | } |
| 1709 | #ifdef HAVE_ADDR_V6_IN_UTMP |
| 1710 | if (from.ss_family == AF_INET6) { |
| 1711 | a6 = (struct sockaddr_in6 *)&from; |
| 1712 | memcpy(&ut.ut_addr_v6, &(a6->sin6_addr), |
| 1713 | MIN_SIZEOF(ut.ut_addr_v6, a6->sin6_addr)); |
| 1714 | } |
| 1715 | #endif |
| 1716 | } |
| 1717 | |
| 1718 | if (atomicio(vwrite, fd, &ut, sizeof(ut)) != sizeof(ut)) |
| 1719 | error("Failed to write to %s: %s", _PATH_BTMP, |
| 1720 | strerror(errno)); |
| 1721 | |
| 1722 | out: |
| 1723 | close(fd); |
| 1724 | } |
| 1725 | #endif /* USE_BTMP */ |