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 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 150 | #include "ssh.h" |
| 151 | #include "xmalloc.h" |
| 152 | #include "loginrec.h" |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame] | 153 | #include "log.h" |
| 154 | #include "atomicio.h" |
Darren Tucker | 2fba993 | 2005-02-02 23:30:24 +1100 | [diff] [blame] | 155 | #include "packet.h" |
| 156 | #include "canohost.h" |
Darren Tucker | 269a1ea | 2005-02-03 00:20:53 +1100 | [diff] [blame] | 157 | #include "auth.h" |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 158 | |
Ben Lindstrom | dcca981 | 2000-11-10 03:28:31 +0000 | [diff] [blame] | 159 | #ifdef HAVE_UTIL_H |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 160 | # include <util.h> |
Ben Lindstrom | dcca981 | 2000-11-10 03:28:31 +0000 | [diff] [blame] | 161 | #endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 162 | |
Ben Lindstrom | e2fb8d3 | 2000-12-28 00:07:07 +0000 | [diff] [blame] | 163 | #ifdef HAVE_LIBUTIL_H |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 164 | # include <libutil.h> |
Ben Lindstrom | e2fb8d3 | 2000-12-28 00:07:07 +0000 | [diff] [blame] | 165 | #endif |
| 166 | |
Darren Tucker | 691d523 | 2005-02-15 21:45:57 +1100 | [diff] [blame^] | 167 | RCSID("$Id: loginrec.c,v 1.66 2005/02/15 10:45:57 dtucker Exp $"); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 168 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 169 | /** |
| 170 | ** prototypes for helper functions in this file |
| 171 | **/ |
| 172 | |
| 173 | #if HAVE_UTMP_H |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 174 | void set_utmp_time(struct logininfo *li, struct utmp *ut); |
| 175 | void construct_utmp(struct logininfo *li, struct utmp *ut); |
| 176 | #endif |
| 177 | |
| 178 | #ifdef HAVE_UTMPX_H |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 179 | void set_utmpx_time(struct logininfo *li, struct utmpx *ut); |
| 180 | void construct_utmpx(struct logininfo *li, struct utmpx *ut); |
| 181 | #endif |
| 182 | |
| 183 | int utmp_write_entry(struct logininfo *li); |
| 184 | int utmpx_write_entry(struct logininfo *li); |
| 185 | int wtmp_write_entry(struct logininfo *li); |
| 186 | int wtmpx_write_entry(struct logininfo *li); |
| 187 | int lastlog_write_entry(struct logininfo *li); |
| 188 | int syslogin_write_entry(struct logininfo *li); |
| 189 | |
| 190 | int getlast_entry(struct logininfo *li); |
| 191 | int lastlog_get_entry(struct logininfo *li); |
| 192 | int wtmp_get_entry(struct logininfo *li); |
| 193 | int wtmpx_get_entry(struct logininfo *li); |
| 194 | |
Darren Tucker | 691d523 | 2005-02-15 21:45:57 +1100 | [diff] [blame^] | 195 | extern Buffer loginmsg; |
| 196 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 197 | /* pick the shortest string */ |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 198 | #define MIN_SIZEOF(s1,s2) (sizeof(s1) < sizeof(s2) ? sizeof(s1) : sizeof(s2)) |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 199 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 200 | /** |
| 201 | ** platform-independent login functions |
| 202 | **/ |
| 203 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 204 | /* |
| 205 | * login_login(struct logininfo *) - Record a login |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 206 | * |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 207 | * Call with a pointer to a struct logininfo initialised with |
| 208 | * login_init_entry() or login_alloc_entry() |
| 209 | * |
| 210 | * Returns: |
| 211 | * >0 if successful |
| 212 | * 0 on failure (will use OpenSSH's logging facilities for diagnostics) |
| 213 | */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 214 | int |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 215 | login_login(struct logininfo *li) |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 216 | { |
| 217 | li->type = LTYPE_LOGIN; |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 218 | return (login_write(li)); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 219 | } |
| 220 | |
| 221 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 222 | /* |
| 223 | * login_logout(struct logininfo *) - Record a logout |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 224 | * |
| 225 | * Call as with login_login() |
| 226 | * |
| 227 | * Returns: |
| 228 | * >0 if successful |
| 229 | * 0 on failure (will use OpenSSH's logging facilities for diagnostics) |
| 230 | */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 231 | int |
| 232 | login_logout(struct logininfo *li) |
| 233 | { |
| 234 | li->type = LTYPE_LOGOUT; |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 235 | return (login_write(li)); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 236 | } |
| 237 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 238 | /* |
| 239 | * login_get_lastlog_time(int) - Retrieve the last login time |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 240 | * |
| 241 | * Retrieve the last login time for the given uid. Will try to use the |
| 242 | * system lastlog facilities if they are available, but will fall back |
| 243 | * to looking in wtmp/wtmpx if necessary |
| 244 | * |
| 245 | * Returns: |
| 246 | * 0 on failure, or if user has never logged in |
| 247 | * Time in seconds from the epoch if successful |
| 248 | * |
| 249 | * Useful preprocessor symbols: |
| 250 | * DISABLE_LASTLOG: If set, *never* even try to retrieve lastlog |
| 251 | * info |
| 252 | * USE_LASTLOG: If set, indicates the presence of system lastlog |
| 253 | * facilities. If this and DISABLE_LASTLOG are not set, |
| 254 | * try to retrieve lastlog information from wtmp/wtmpx. |
| 255 | */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 256 | unsigned int |
| 257 | login_get_lastlog_time(const int uid) |
| 258 | { |
| 259 | struct logininfo li; |
| 260 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 261 | if (login_get_lastlog(&li, uid)) |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 262 | return (li.tv_sec); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 263 | else |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 264 | return (0); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 265 | } |
| 266 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 267 | /* |
| 268 | * login_get_lastlog(struct logininfo *, int) - Retrieve a lastlog entry |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 269 | * |
| 270 | * Retrieve a logininfo structure populated (only partially) with |
| 271 | * information from the system lastlog data, or from wtmp/wtmpx if no |
| 272 | * system lastlog information exists. |
| 273 | * |
| 274 | * Note this routine must be given a pre-allocated logininfo. |
| 275 | * |
| 276 | * Returns: |
| 277 | * >0: A pointer to your struct logininfo if successful |
| 278 | * 0 on failure (will use OpenSSH's logging facilities for diagnostics) |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 279 | */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 280 | struct logininfo * |
| 281 | login_get_lastlog(struct logininfo *li, const int uid) |
| 282 | { |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 283 | struct passwd *pw; |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 284 | |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 285 | memset(li, '\0', sizeof(*li)); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 286 | li->uid = uid; |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 287 | |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 288 | /* |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 289 | * If we don't have a 'real' lastlog, we need the username to |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 290 | * reliably search wtmp(x) for the last login (see |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 291 | * wtmp_get_entry().) |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 292 | */ |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 293 | pw = getpwuid(uid); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 294 | if (pw == NULL) |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 295 | fatal("%s: Cannot find account for uid %i", __func__, uid); |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 296 | |
andre | 98cabe0 | 2000-06-19 09:11:30 +0000 | [diff] [blame] | 297 | /* No MIN_SIZEOF here - we absolutely *must not* truncate the |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 298 | * username (XXX - so check for trunc!) */ |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 299 | strlcpy(li->username, pw->pw_name, sizeof(li->username)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 300 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 301 | if (getlast_entry(li)) |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 302 | return (li); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 303 | else |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 304 | return (NULL); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 305 | } |
| 306 | |
| 307 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 308 | /* |
| 309 | * login_alloc_entry(int, char*, char*, char*) - Allocate and initialise |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 310 | * a logininfo structure |
| 311 | * |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 312 | * This function creates a new struct logininfo, a data structure |
| 313 | * meant to carry the information required to portably record login info. |
| 314 | * |
| 315 | * Returns a pointer to a newly created struct logininfo. If memory |
| 316 | * allocation fails, the program halts. |
| 317 | */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 318 | struct |
| 319 | logininfo *login_alloc_entry(int pid, const char *username, |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 320 | const char *hostname, const char *line) |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 321 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 322 | struct logininfo *newli; |
| 323 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 324 | newli = xmalloc(sizeof(*newli)); |
| 325 | login_init_entry(newli, pid, username, hostname, line); |
| 326 | return (newli); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 327 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 328 | |
| 329 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 330 | /* login_free_entry(struct logininfo *) - free struct memory */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 331 | void |
| 332 | login_free_entry(struct logininfo *li) |
| 333 | { |
| 334 | xfree(li); |
| 335 | } |
| 336 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 337 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 338 | /* login_init_entry(struct logininfo *, int, char*, char*, char*) |
| 339 | * - initialise a struct logininfo |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 340 | * |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 341 | * Populates a new struct logininfo, a data structure meant to carry |
| 342 | * the information required to portably record login info. |
| 343 | * |
| 344 | * Returns: 1 |
| 345 | */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 346 | int |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 347 | login_init_entry(struct logininfo *li, int pid, const char *username, |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 348 | const char *hostname, const char *line) |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 349 | { |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 350 | struct passwd *pw; |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 351 | |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 352 | memset(li, 0, sizeof(*li)); |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 353 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 354 | li->pid = pid; |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 355 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 356 | /* set the line information */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 357 | if (line) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 358 | line_fullname(li->line, line, sizeof(li->line)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 359 | |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 360 | if (username) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 361 | strlcpy(li->username, username, sizeof(li->username)); |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 362 | pw = getpwnam(li->username); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 363 | if (pw == NULL) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 364 | fatal("%s: Cannot find user \"%s\"", __func__, |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 365 | li->username); |
| 366 | } |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 367 | li->uid = pw->pw_uid; |
| 368 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 369 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 370 | if (hostname) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 371 | strlcpy(li->hostname, hostname, sizeof(li->hostname)); |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 372 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 373 | return (1); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 374 | } |
| 375 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 376 | /* |
| 377 | * login_set_current_time(struct logininfo *) - set the current time |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 378 | * |
| 379 | * Set the current time in a logininfo structure. This function is |
| 380 | * meant to eliminate the need to deal with system dependencies for |
| 381 | * time handling. |
| 382 | */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 383 | void |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 384 | login_set_current_time(struct logininfo *li) |
| 385 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 386 | struct timeval tv; |
| 387 | |
| 388 | gettimeofday(&tv, NULL); |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 389 | |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 390 | li->tv_sec = tv.tv_sec; |
| 391 | li->tv_usec = tv.tv_usec; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 392 | } |
| 393 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 394 | /* copy a sockaddr_* into our logininfo */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 395 | void |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 396 | login_set_addr(struct logininfo *li, const struct sockaddr *sa, |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 397 | const unsigned int sa_size) |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 398 | { |
| 399 | unsigned int bufsize = sa_size; |
| 400 | |
| 401 | /* make sure we don't overrun our union */ |
| 402 | if (sizeof(li->hostaddr) < sa_size) |
| 403 | bufsize = sizeof(li->hostaddr); |
| 404 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 405 | memcpy(&li->hostaddr.sa, sa, bufsize); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 406 | } |
| 407 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 408 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 409 | /** |
| 410 | ** login_write: Call low-level recording functions based on autoconf |
| 411 | ** results |
| 412 | **/ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 413 | int |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 414 | login_write(struct logininfo *li) |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 415 | { |
Damien Miller | bac2d8a | 2000-09-05 16:13:06 +1100 | [diff] [blame] | 416 | #ifndef HAVE_CYGWIN |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 417 | if (geteuid() != 0) { |
| 418 | logit("Attempt to write login records by non-root user (aborting)"); |
| 419 | return (1); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 420 | } |
Damien Miller | bac2d8a | 2000-09-05 16:13:06 +1100 | [diff] [blame] | 421 | #endif |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 422 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 423 | /* set the timestamp */ |
| 424 | login_set_current_time(li); |
| 425 | #ifdef USE_LOGIN |
| 426 | syslogin_write_entry(li); |
| 427 | #endif |
| 428 | #ifdef USE_LASTLOG |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 429 | if (li->type == LTYPE_LOGIN) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 430 | lastlog_write_entry(li); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 431 | #endif |
| 432 | #ifdef USE_UTMP |
| 433 | utmp_write_entry(li); |
| 434 | #endif |
| 435 | #ifdef USE_WTMP |
| 436 | wtmp_write_entry(li); |
| 437 | #endif |
| 438 | #ifdef USE_UTMPX |
| 439 | utmpx_write_entry(li); |
| 440 | #endif |
| 441 | #ifdef USE_WTMPX |
| 442 | wtmpx_write_entry(li); |
| 443 | #endif |
Darren Tucker | 397a2f2 | 2004-08-15 00:09:11 +1000 | [diff] [blame] | 444 | #ifdef CUSTOM_SYS_AUTH_RECORD_LOGIN |
| 445 | if (li->type == LTYPE_LOGIN && |
Darren Tucker | 691d523 | 2005-02-15 21:45:57 +1100 | [diff] [blame^] | 446 | !sys_auth_record_login(li->username,li->hostname,li->line, &loginmsg)) |
Darren Tucker | 397a2f2 | 2004-08-15 00:09:11 +1000 | [diff] [blame] | 447 | logit("Writing login record failed for %s", li->username); |
| 448 | #endif |
Darren Tucker | 2e0cf0d | 2005-02-08 21:52:47 +1100 | [diff] [blame] | 449 | #ifdef SSH_AUDIT_EVENTS |
Darren Tucker | 269a1ea | 2005-02-03 00:20:53 +1100 | [diff] [blame] | 450 | if (li->type == LTYPE_LOGIN) |
| 451 | audit_session_open(li->line); |
| 452 | else if (li->type == LTYPE_LOGOUT) |
| 453 | audit_session_close(li->line); |
| 454 | #endif |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 455 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 456 | } |
| 457 | |
Ben Lindstrom | 97c677d | 2001-05-08 20:33:05 +0000 | [diff] [blame] | 458 | #ifdef LOGIN_NEEDS_UTMPX |
| 459 | int |
| 460 | login_utmp_only(struct logininfo *li) |
| 461 | { |
Damien Miller | a8e06ce | 2003-11-21 23:48:55 +1100 | [diff] [blame] | 462 | li->type = LTYPE_LOGIN; |
Ben Lindstrom | 9197c59 | 2001-10-26 15:56:55 +0000 | [diff] [blame] | 463 | login_set_current_time(li); |
Ben Lindstrom | 97c677d | 2001-05-08 20:33:05 +0000 | [diff] [blame] | 464 | # ifdef USE_UTMP |
| 465 | utmp_write_entry(li); |
| 466 | # endif |
| 467 | # ifdef USE_WTMP |
| 468 | wtmp_write_entry(li); |
| 469 | # endif |
| 470 | # ifdef USE_UTMPX |
| 471 | utmpx_write_entry(li); |
| 472 | # endif |
| 473 | # ifdef USE_WTMPX |
| 474 | wtmpx_write_entry(li); |
| 475 | # endif |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 476 | return (0); |
Ben Lindstrom | 97c677d | 2001-05-08 20:33:05 +0000 | [diff] [blame] | 477 | } |
| 478 | #endif |
| 479 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 480 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 481 | ** getlast_entry: Call low-level functions to retrieve the last login |
| 482 | ** time. |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 483 | **/ |
| 484 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 485 | /* take the uid in li and return the last login time */ |
| 486 | int |
| 487 | getlast_entry(struct logininfo *li) |
| 488 | { |
| 489 | #ifdef USE_LASTLOG |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 490 | return(lastlog_get_entry(li)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 491 | #else /* !USE_LASTLOG */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 492 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 493 | #if defined(DISABLE_LASTLOG) |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 494 | /* On some systems we shouldn't even try to obtain last login |
andre | ecaabf1 | 2000-06-12 22:21:44 +0000 | [diff] [blame] | 495 | * time, e.g. AIX */ |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 496 | return (0); |
| 497 | # elif defined(USE_WTMP) && \ |
| 498 | (defined(HAVE_TIME_IN_UTMP) || defined(HAVE_TV_IN_UTMP)) |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 499 | /* retrieve last login time from utmp */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 500 | return (wtmp_get_entry(li)); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 501 | # elif defined(USE_WTMPX) && \ |
| 502 | (defined(HAVE_TIME_IN_UTMPX) || defined(HAVE_TV_IN_UTMPX)) |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 503 | /* If wtmp isn't available, try wtmpx */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 504 | return (wtmpx_get_entry(li)); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 505 | # else |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 506 | /* Give up: No means of retrieving last login time */ |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 507 | return (0); |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 508 | # endif /* DISABLE_LASTLOG */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 509 | #endif /* USE_LASTLOG */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 510 | } |
| 511 | |
| 512 | |
| 513 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 514 | /* |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 515 | * 'line' string utility functions |
| 516 | * |
| 517 | * These functions process the 'line' string into one of three forms: |
| 518 | * |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 519 | * 1. The full filename (including '/dev') |
| 520 | * 2. The stripped name (excluding '/dev') |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 521 | * 3. The abbreviated name (e.g. /dev/ttyp00 -> yp00 |
| 522 | * /dev/pts/1 -> ts/1 ) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 523 | * |
| 524 | * Form 3 is used on some systems to identify a .tmp.? entry when |
| 525 | * attempting to remove it. Typically both addition and removal is |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 526 | * performed by one application - say, sshd - so as long as the choice |
| 527 | * uniquely identifies a terminal it's ok. |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 528 | */ |
| 529 | |
| 530 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 531 | /* |
| 532 | * line_fullname(): add the leading '/dev/' if it doesn't exist make |
| 533 | * sure dst has enough space, if not just copy src (ugh) |
| 534 | */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 535 | char * |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 536 | line_fullname(char *dst, const char *src, int dstsize) |
| 537 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 538 | memset(dst, '\0', dstsize); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 539 | if ((strncmp(src, "/dev/", 5) == 0) || (dstsize < (strlen(src) + 5))) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 540 | strlcpy(dst, src, dstsize); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 541 | else { |
Damien Miller | 1a13225 | 2000-06-13 21:23:17 +1000 | [diff] [blame] | 542 | strlcpy(dst, "/dev/", dstsize); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 543 | strlcat(dst, src, dstsize); |
| 544 | } |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 545 | return (dst); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 546 | } |
| 547 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 548 | /* line_stripname(): strip the leading '/dev' if it exists, return dst */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 549 | char * |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 550 | line_stripname(char *dst, const char *src, int dstsize) |
| 551 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 552 | memset(dst, '\0', dstsize); |
| 553 | if (strncmp(src, "/dev/", 5) == 0) |
Damien Miller | f5a8147 | 2000-09-30 21:34:44 +1100 | [diff] [blame] | 554 | strlcpy(dst, src + 5, dstsize); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 555 | else |
| 556 | strlcpy(dst, src, dstsize); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 557 | return (dst); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 558 | } |
| 559 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 560 | /* |
| 561 | * line_abbrevname(): Return the abbreviated (usually four-character) |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 562 | * form of the line (Just use the last <dstsize> characters of the |
| 563 | * full name.) |
| 564 | * |
| 565 | * NOTE: use strncpy because we do NOT necessarily want zero |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 566 | * termination |
| 567 | */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 568 | char * |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 569 | line_abbrevname(char *dst, const char *src, int dstsize) |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 570 | { |
| 571 | size_t len; |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 572 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 573 | memset(dst, '\0', dstsize); |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 574 | |
Damien Miller | 8e81ed3 | 2000-07-01 13:17:42 +1000 | [diff] [blame] | 575 | /* Always skip prefix if present */ |
| 576 | if (strncmp(src, "/dev/", 5) == 0) |
| 577 | src += 5; |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 578 | |
Damien Miller | f1b9d11 | 2002-04-23 23:09:19 +1000 | [diff] [blame] | 579 | #ifdef WITH_ABBREV_NO_TTY |
| 580 | if (strncmp(src, "tty", 3) == 0) |
| 581 | src += 3; |
| 582 | #endif |
| 583 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 584 | len = strlen(src); |
| 585 | |
Damien Miller | 8e81ed3 | 2000-07-01 13:17:42 +1000 | [diff] [blame] | 586 | if (len > 0) { |
| 587 | if (((int)len - dstsize) > 0) |
| 588 | src += ((int)len - dstsize); |
| 589 | |
| 590 | /* note: _don't_ change this to strlcpy */ |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 591 | strncpy(dst, src, (size_t)dstsize); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 592 | } |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 593 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 594 | return (dst); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 595 | } |
| 596 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 597 | /** |
| 598 | ** utmp utility functions |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 599 | ** |
| 600 | ** These functions manipulate struct utmp, taking system differences |
| 601 | ** into account. |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 602 | **/ |
| 603 | |
| 604 | #if defined(USE_UTMP) || defined (USE_WTMP) || defined (USE_LOGIN) |
| 605 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 606 | /* build the utmp structure */ |
| 607 | void |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 608 | set_utmp_time(struct logininfo *li, struct utmp *ut) |
| 609 | { |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 610 | # if defined(HAVE_TV_IN_UTMP) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 611 | ut->ut_tv.tv_sec = li->tv_sec; |
| 612 | ut->ut_tv.tv_usec = li->tv_usec; |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 613 | # elif defined(HAVE_TIME_IN_UTMP) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 614 | ut->ut_time = li->tv_sec; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 615 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 616 | } |
| 617 | |
| 618 | void |
| 619 | construct_utmp(struct logininfo *li, |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 620 | struct utmp *ut) |
| 621 | { |
Damien Miller | 02e16ad | 2003-01-03 14:42:27 +1100 | [diff] [blame] | 622 | # ifdef HAVE_ADDR_V6_IN_UTMP |
| 623 | struct sockaddr_in6 *sa6; |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 624 | # endif |
| 625 | |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 626 | memset(ut, '\0', sizeof(*ut)); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 627 | |
| 628 | /* First fill out fields used for both logins and logouts */ |
| 629 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 630 | # ifdef HAVE_ID_IN_UTMP |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 631 | line_abbrevname(ut->ut_id, li->line, sizeof(ut->ut_id)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 632 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 633 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 634 | # ifdef HAVE_TYPE_IN_UTMP |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 635 | /* This is done here to keep utmp constants out of struct logininfo */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 636 | switch (li->type) { |
| 637 | case LTYPE_LOGIN: |
| 638 | ut->ut_type = USER_PROCESS; |
Tim Rice | 81ed518 | 2002-09-25 17:38:46 -0700 | [diff] [blame] | 639 | #ifdef _UNICOS |
Ben Lindstrom | 6db66ff | 2001-08-06 23:29:16 +0000 | [diff] [blame] | 640 | cray_set_tmpdir(ut); |
| 641 | #endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 642 | break; |
| 643 | case LTYPE_LOGOUT: |
| 644 | ut->ut_type = DEAD_PROCESS; |
Tim Rice | 81ed518 | 2002-09-25 17:38:46 -0700 | [diff] [blame] | 645 | #ifdef _UNICOS |
Ben Lindstrom | 6db66ff | 2001-08-06 23:29:16 +0000 | [diff] [blame] | 646 | cray_retain_utmp(ut, li->pid); |
| 647 | #endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 648 | break; |
| 649 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 650 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 651 | set_utmp_time(li, ut); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 652 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 653 | line_stripname(ut->ut_line, li->line, sizeof(ut->ut_line)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 654 | |
| 655 | # ifdef HAVE_PID_IN_UTMP |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 656 | ut->ut_pid = li->pid; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 657 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 658 | |
| 659 | /* If we're logging out, leave all other fields blank */ |
| 660 | if (li->type == LTYPE_LOGOUT) |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 661 | return; |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 662 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 663 | /* |
| 664 | * These fields are only used when logging in, and are blank |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 665 | * for logouts. |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 666 | */ |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 667 | |
| 668 | /* Use strncpy because we don't necessarily want null termination */ |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 669 | strncpy(ut->ut_name, li->username, |
| 670 | MIN_SIZEOF(ut->ut_name, li->username)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 671 | # ifdef HAVE_HOST_IN_UTMP |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 672 | strncpy(ut->ut_host, li->hostname, |
| 673 | MIN_SIZEOF(ut->ut_host, li->hostname)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 674 | # endif |
| 675 | # ifdef HAVE_ADDR_IN_UTMP |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 676 | /* this is just a 32-bit IP address */ |
| 677 | if (li->hostaddr.sa.sa_family == AF_INET) |
| 678 | ut->ut_addr = li->hostaddr.sa_in.sin_addr.s_addr; |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 679 | # endif |
Damien Miller | 02e16ad | 2003-01-03 14:42:27 +1100 | [diff] [blame] | 680 | # ifdef HAVE_ADDR_V6_IN_UTMP |
| 681 | /* this is just a 128-bit IPv6 address */ |
| 682 | if (li->hostaddr.sa.sa_family == AF_INET6) { |
| 683 | sa6 = ((struct sockaddr_in6 *)&li->hostaddr.sa); |
| 684 | memcpy(ut->ut_addr_v6, sa6->sin6_addr.s6_addr, 16); |
| 685 | if (IN6_IS_ADDR_V4MAPPED(&sa6->sin6_addr)) { |
| 686 | ut->ut_addr_v6[0] = ut->ut_addr_v6[3]; |
| 687 | ut->ut_addr_v6[1] = 0; |
| 688 | ut->ut_addr_v6[2] = 0; |
| 689 | ut->ut_addr_v6[3] = 0; |
| 690 | } |
| 691 | } |
| 692 | # endif |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 693 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 694 | #endif /* USE_UTMP || USE_WTMP || USE_LOGIN */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 695 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 696 | /** |
| 697 | ** utmpx utility functions |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 698 | ** |
| 699 | ** These functions manipulate struct utmpx, accounting for system |
| 700 | ** variations. |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 701 | **/ |
| 702 | |
| 703 | #if defined(USE_UTMPX) || defined (USE_WTMPX) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 704 | /* build the utmpx structure */ |
| 705 | void |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 706 | set_utmpx_time(struct logininfo *li, struct utmpx *utx) |
| 707 | { |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 708 | # if defined(HAVE_TV_IN_UTMPX) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 709 | utx->ut_tv.tv_sec = li->tv_sec; |
| 710 | utx->ut_tv.tv_usec = li->tv_usec; |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 711 | # elif defined(HAVE_TIME_IN_UTMPX) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 712 | utx->ut_time = li->tv_sec; |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 713 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 714 | } |
| 715 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 716 | void |
| 717 | construct_utmpx(struct logininfo *li, struct utmpx *utx) |
| 718 | { |
Damien Miller | 02e16ad | 2003-01-03 14:42:27 +1100 | [diff] [blame] | 719 | # ifdef HAVE_ADDR_V6_IN_UTMP |
| 720 | struct sockaddr_in6 *sa6; |
| 721 | # endif |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 722 | memset(utx, '\0', sizeof(*utx)); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 723 | |
Damien Miller | 8e81ed3 | 2000-07-01 13:17:42 +1000 | [diff] [blame] | 724 | # ifdef HAVE_ID_IN_UTMPX |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 725 | line_abbrevname(utx->ut_id, li->line, sizeof(utx->ut_id)); |
Damien Miller | 8e81ed3 | 2000-07-01 13:17:42 +1000 | [diff] [blame] | 726 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 727 | |
| 728 | /* this is done here to keep utmp constants out of loginrec.h */ |
| 729 | switch (li->type) { |
| 730 | case LTYPE_LOGIN: |
| 731 | utx->ut_type = USER_PROCESS; |
| 732 | break; |
| 733 | case LTYPE_LOGOUT: |
| 734 | utx->ut_type = DEAD_PROCESS; |
| 735 | break; |
| 736 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 737 | line_stripname(utx->ut_line, li->line, sizeof(utx->ut_line)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 738 | set_utmpx_time(li, utx); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 739 | utx->ut_pid = li->pid; |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 740 | |
Tim Rice | e06ae4a | 2002-02-24 17:56:46 -0800 | [diff] [blame] | 741 | /* strncpy(): Don't necessarily want null termination */ |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 742 | strncpy(utx->ut_name, li->username, |
| 743 | MIN_SIZEOF(utx->ut_name, li->username)); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 744 | |
| 745 | if (li->type == LTYPE_LOGOUT) |
| 746 | return; |
| 747 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 748 | /* |
| 749 | * These fields are only used when logging in, and are blank |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 750 | * for logouts. |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 751 | */ |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 752 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 753 | # ifdef HAVE_HOST_IN_UTMPX |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 754 | strncpy(utx->ut_host, li->hostname, |
| 755 | MIN_SIZEOF(utx->ut_host, li->hostname)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 756 | # endif |
| 757 | # ifdef HAVE_ADDR_IN_UTMPX |
Damien Miller | d6f204d | 2000-09-23 13:57:27 +1100 | [diff] [blame] | 758 | /* this is just a 32-bit IP address */ |
| 759 | if (li->hostaddr.sa.sa_family == AF_INET) |
| 760 | utx->ut_addr = li->hostaddr.sa_in.sin_addr.s_addr; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 761 | # endif |
Damien Miller | 02e16ad | 2003-01-03 14:42:27 +1100 | [diff] [blame] | 762 | # ifdef HAVE_ADDR_V6_IN_UTMP |
| 763 | /* this is just a 128-bit IPv6 address */ |
| 764 | if (li->hostaddr.sa.sa_family == AF_INET6) { |
| 765 | sa6 = ((struct sockaddr_in6 *)&li->hostaddr.sa); |
| 766 | memcpy(ut->ut_addr_v6, sa6->sin6_addr.s6_addr, 16); |
| 767 | if (IN6_IS_ADDR_V4MAPPED(&sa6->sin6_addr)) { |
| 768 | ut->ut_addr_v6[0] = ut->ut_addr_v6[3]; |
| 769 | ut->ut_addr_v6[1] = 0; |
| 770 | ut->ut_addr_v6[2] = 0; |
| 771 | ut->ut_addr_v6[3] = 0; |
| 772 | } |
| 773 | } |
| 774 | # endif |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 775 | # ifdef HAVE_SYSLEN_IN_UTMPX |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 776 | /* ut_syslen is the length of the utx_host string */ |
| 777 | utx->ut_syslen = MIN(strlen(li->hostname), sizeof(utx->ut_host)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 778 | # endif |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 779 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 780 | #endif /* USE_UTMPX || USE_WTMPX */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 781 | |
| 782 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 783 | ** Low-level utmp functions |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 784 | **/ |
| 785 | |
| 786 | /* FIXME: (ATL) utmp_write_direct needs testing */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 787 | #ifdef USE_UTMP |
| 788 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 789 | /* if we can, use pututline() etc. */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 790 | # if !defined(DISABLE_PUTUTLINE) && defined(HAVE_SETUTENT) && \ |
| 791 | defined(HAVE_PUTUTLINE) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 792 | # define UTMP_USE_LIBRARY |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 793 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 794 | |
| 795 | |
| 796 | /* write a utmp entry with the system's help (pututline() and pals) */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 797 | # ifdef UTMP_USE_LIBRARY |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 798 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 799 | utmp_write_library(struct logininfo *li, struct utmp *ut) |
| 800 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 801 | setutent(); |
| 802 | pututline(ut); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 803 | # ifdef HAVE_ENDUTENT |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 804 | endutent(); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 805 | # endif |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 806 | return (1); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 807 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 808 | # else /* UTMP_USE_LIBRARY */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 809 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 810 | /* |
| 811 | * Write a utmp entry direct to the file |
| 812 | * This is a slightly modification of code in OpenBSD's login.c |
| 813 | */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 814 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 815 | utmp_write_direct(struct logininfo *li, struct utmp *ut) |
| 816 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 817 | struct utmp old_ut; |
| 818 | register int fd; |
| 819 | int tty; |
| 820 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 821 | /* FIXME: (ATL) ttyslot() needs local implementation */ |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 822 | |
Damien Miller | e5192fa | 2000-08-29 14:30:37 +1100 | [diff] [blame] | 823 | #if defined(HAVE_GETTTYENT) |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 824 | struct ttyent *ty; |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 825 | |
| 826 | tty=0; |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 827 | setttyent(); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 828 | while (NULL != (ty = getttyent())) { |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 829 | tty++; |
| 830 | if (!strncmp(ty->ty_name, ut->ut_line, sizeof(ut->ut_line))) |
| 831 | break; |
| 832 | } |
| 833 | endttyent(); |
| 834 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 835 | if (NULL == ty) { |
Damien Miller | 8140959 | 2004-08-15 19:12:52 +1000 | [diff] [blame] | 836 | logit("%s: tty not found", __func__); |
| 837 | return (0); |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 838 | } |
| 839 | #else /* FIXME */ |
| 840 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 841 | tty = ttyslot(); /* seems only to work for /dev/ttyp? style names */ |
| 842 | |
Damien Miller | e5192fa | 2000-08-29 14:30:37 +1100 | [diff] [blame] | 843 | #endif /* HAVE_GETTTYENT */ |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 844 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 845 | 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] | 846 | off_t pos, ret; |
| 847 | |
| 848 | pos = (off_t)tty * sizeof(struct utmp); |
| 849 | if ((ret = lseek(fd, pos, SEEK_SET)) == -1) { |
Damien Miller | b0419f2 | 2004-08-23 21:53:28 +1000 | [diff] [blame] | 850 | logit("%s: lseek: %s", __func__, strerror(errno)); |
Damien Miller | 8140959 | 2004-08-15 19:12:52 +1000 | [diff] [blame] | 851 | return (0); |
| 852 | } |
| 853 | if (ret != pos) { |
Damien Miller | b0419f2 | 2004-08-23 21:53:28 +1000 | [diff] [blame] | 854 | logit("%s: Couldn't seek to tty %d slot in %s", |
| 855 | __func__, tty, UTMP_FILE); |
Damien Miller | 8140959 | 2004-08-15 19:12:52 +1000 | [diff] [blame] | 856 | return (0); |
| 857 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 858 | /* |
| 859 | * Prevent luser from zero'ing out ut_host. |
| 860 | * 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] | 861 | * and ut_line and ut_name match, preserve the old ut_line. |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 862 | */ |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 863 | if (atomicio(read, fd, &old_ut, sizeof(old_ut)) == sizeof(old_ut) && |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 864 | (ut->ut_host[0] == '\0') && (old_ut.ut_host[0] != '\0') && |
| 865 | (strncmp(old_ut.ut_line, ut->ut_line, sizeof(ut->ut_line)) == 0) && |
| 866 | (strncmp(old_ut.ut_name, ut->ut_name, sizeof(ut->ut_name)) == 0)) |
| 867 | memcpy(ut->ut_host, old_ut.ut_host, sizeof(ut->ut_host)); |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 868 | |
Damien Miller | 8140959 | 2004-08-15 19:12:52 +1000 | [diff] [blame] | 869 | if ((ret = lseek(fd, pos, SEEK_SET)) == -1) { |
Damien Miller | b0419f2 | 2004-08-23 21:53:28 +1000 | [diff] [blame] | 870 | logit("%s: lseek: %s", __func__, strerror(errno)); |
Damien Miller | 8140959 | 2004-08-15 19:12:52 +1000 | [diff] [blame] | 871 | return (0); |
| 872 | } |
| 873 | if (ret != pos) { |
Damien Miller | b0419f2 | 2004-08-23 21:53:28 +1000 | [diff] [blame] | 874 | logit("%s: Couldn't seek to tty %d slot in %s", |
Damien Miller | 8140959 | 2004-08-15 19:12:52 +1000 | [diff] [blame] | 875 | __func__, tty, UTMP_FILE); |
| 876 | return (0); |
| 877 | } |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 878 | if (atomicio(vwrite, fd, ut, sizeof(*ut)) != sizeof(*ut)) { |
Damien Miller | 8140959 | 2004-08-15 19:12:52 +1000 | [diff] [blame] | 879 | logit("%s: error writing %s: %s", __func__, |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 880 | UTMP_FILE, strerror(errno)); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 881 | } |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 882 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 883 | close(fd); |
| 884 | return (1); |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 885 | } else { |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 886 | return (0); |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 887 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 888 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 889 | # endif /* UTMP_USE_LIBRARY */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 890 | |
| 891 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 892 | utmp_perform_login(struct logininfo *li) |
| 893 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 894 | struct utmp ut; |
| 895 | |
| 896 | construct_utmp(li, &ut); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 897 | # ifdef UTMP_USE_LIBRARY |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 898 | if (!utmp_write_library(li, &ut)) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 899 | logit("%s: utmp_write_library() failed", __func__); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 900 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 901 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 902 | # else |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 903 | if (!utmp_write_direct(li, &ut)) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 904 | logit("%s: utmp_write_direct() failed", __func__); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 905 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 906 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 907 | # endif |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 908 | return (1); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 909 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 910 | |
| 911 | |
| 912 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 913 | utmp_perform_logout(struct logininfo *li) |
| 914 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 915 | struct utmp ut; |
| 916 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 917 | construct_utmp(li, &ut); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 918 | # ifdef UTMP_USE_LIBRARY |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 919 | if (!utmp_write_library(li, &ut)) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 920 | logit("%s: utmp_write_library() failed", __func__); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 921 | return (0); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 922 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 923 | # else |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 924 | if (!utmp_write_direct(li, &ut)) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 925 | logit("%s: utmp_write_direct() failed", __func__); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 926 | return (0); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 927 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 928 | # endif |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 929 | return (1); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 930 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 931 | |
| 932 | |
| 933 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 934 | utmp_write_entry(struct logininfo *li) |
| 935 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 936 | switch(li->type) { |
| 937 | case LTYPE_LOGIN: |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 938 | return (utmp_perform_login(li)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 939 | |
| 940 | case LTYPE_LOGOUT: |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 941 | return (utmp_perform_logout(li)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 942 | |
| 943 | default: |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 944 | logit("%s: invalid type field", __func__); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 945 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 946 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 947 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 948 | #endif /* USE_UTMP */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 949 | |
| 950 | |
| 951 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 952 | ** Low-level utmpx functions |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 953 | **/ |
| 954 | |
| 955 | /* not much point if we don't want utmpx entries */ |
| 956 | #ifdef USE_UTMPX |
| 957 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 958 | /* if we have the wherewithall, use pututxline etc. */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 959 | # if !defined(DISABLE_PUTUTXLINE) && defined(HAVE_SETUTXENT) && \ |
| 960 | defined(HAVE_PUTUTXLINE) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 961 | # define UTMPX_USE_LIBRARY |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 962 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 963 | |
| 964 | |
| 965 | /* write a utmpx entry with the system's help (pututxline() and pals) */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 966 | # ifdef UTMPX_USE_LIBRARY |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 967 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 968 | utmpx_write_library(struct logininfo *li, struct utmpx *utx) |
| 969 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 970 | setutxent(); |
| 971 | pututxline(utx); |
| 972 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 973 | # ifdef HAVE_ENDUTXENT |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 974 | endutxent(); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 975 | # endif |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 976 | return (1); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 977 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 978 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 979 | # else /* UTMPX_USE_LIBRARY */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 980 | |
| 981 | /* write a utmp entry direct to the file */ |
| 982 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 983 | utmpx_write_direct(struct logininfo *li, struct utmpx *utx) |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 984 | { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 985 | logit("%s: not implemented!", __func__); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 986 | return (0); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 987 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 988 | # endif /* UTMPX_USE_LIBRARY */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 989 | |
| 990 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 991 | utmpx_perform_login(struct logininfo *li) |
| 992 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 993 | struct utmpx utx; |
| 994 | |
| 995 | construct_utmpx(li, &utx); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 996 | # ifdef UTMPX_USE_LIBRARY |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 997 | if (!utmpx_write_library(li, &utx)) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 998 | logit("%s: utmp_write_library() failed", __func__); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 999 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1000 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1001 | # else |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1002 | if (!utmpx_write_direct(li, &ut)) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1003 | logit("%s: utmp_write_direct() failed", __func__); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1004 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1005 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1006 | # endif |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1007 | return (1); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1008 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1009 | |
| 1010 | |
| 1011 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1012 | utmpx_perform_logout(struct logininfo *li) |
| 1013 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1014 | struct utmpx utx; |
| 1015 | |
Tim Rice | e06ae4a | 2002-02-24 17:56:46 -0800 | [diff] [blame] | 1016 | construct_utmpx(li, &utx); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1017 | # ifdef HAVE_ID_IN_UTMPX |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1018 | line_abbrevname(utx.ut_id, li->line, sizeof(utx.ut_id)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1019 | # endif |
| 1020 | # ifdef HAVE_TYPE_IN_UTMPX |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1021 | utx.ut_type = DEAD_PROCESS; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1022 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1023 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1024 | # ifdef UTMPX_USE_LIBRARY |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1025 | utmpx_write_library(li, &utx); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1026 | # else |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1027 | utmpx_write_direct(li, &utx); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1028 | # endif |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1029 | return (1); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1030 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1031 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1032 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1033 | utmpx_write_entry(struct logininfo *li) |
| 1034 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1035 | switch(li->type) { |
| 1036 | case LTYPE_LOGIN: |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1037 | return (utmpx_perform_login(li)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1038 | case LTYPE_LOGOUT: |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1039 | return (utmpx_perform_logout(li)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1040 | default: |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1041 | logit("%s: invalid type field", __func__); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1042 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1043 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1044 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1045 | #endif /* USE_UTMPX */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1046 | |
| 1047 | |
| 1048 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1049 | ** Low-level wtmp functions |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1050 | **/ |
| 1051 | |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1052 | #ifdef USE_WTMP |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1053 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1054 | /* |
| 1055 | * Write a wtmp entry direct to the end of the file |
| 1056 | * This is a slight modification of code in OpenBSD's logwtmp.c |
| 1057 | */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1058 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1059 | wtmp_write(struct logininfo *li, struct utmp *ut) |
| 1060 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1061 | struct stat buf; |
| 1062 | int fd, ret = 1; |
| 1063 | |
| 1064 | if ((fd = open(WTMP_FILE, O_WRONLY|O_APPEND, 0)) < 0) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1065 | logit("%s: problem writing %s: %s", __func__, |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1066 | WTMP_FILE, strerror(errno)); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1067 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1068 | } |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1069 | if (fstat(fd, &buf) == 0) |
Darren Tucker | 8661b56 | 2003-07-06 15:20:46 +1000 | [diff] [blame] | 1070 | if (atomicio(vwrite, fd, ut, sizeof(*ut)) != sizeof(*ut)) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1071 | ftruncate(fd, buf.st_size); |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1072 | logit("%s: problem writing %s: %s", __func__, |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1073 | WTMP_FILE, strerror(errno)); |
| 1074 | ret = 0; |
| 1075 | } |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1076 | close(fd); |
| 1077 | return (ret); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1078 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1079 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1080 | static int |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1081 | wtmp_perform_login(struct logininfo *li) |
| 1082 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1083 | struct utmp ut; |
| 1084 | |
| 1085 | construct_utmp(li, &ut); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1086 | return (wtmp_write(li, &ut)); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1087 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1088 | |
| 1089 | |
| 1090 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1091 | wtmp_perform_logout(struct logininfo *li) |
| 1092 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1093 | struct utmp ut; |
| 1094 | |
| 1095 | construct_utmp(li, &ut); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1096 | return (wtmp_write(li, &ut)); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1097 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1098 | |
| 1099 | |
| 1100 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1101 | wtmp_write_entry(struct logininfo *li) |
| 1102 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1103 | switch(li->type) { |
| 1104 | case LTYPE_LOGIN: |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1105 | return (wtmp_perform_login(li)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1106 | case LTYPE_LOGOUT: |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1107 | return (wtmp_perform_logout(li)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1108 | default: |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1109 | logit("%s: invalid type field", __func__); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1110 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1111 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1112 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1113 | |
| 1114 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1115 | /* |
| 1116 | * Notes on fetching login data from wtmp/wtmpx |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1117 | * |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1118 | * Logouts are usually recorded with (amongst other things) a blank |
| 1119 | * username on a given tty line. However, some systems (HP-UX is one) |
| 1120 | * leave all fields set, but change the ut_type field to DEAD_PROCESS. |
| 1121 | * |
| 1122 | * Since we're only looking for logins here, we know that the username |
| 1123 | * must be set correctly. On systems that leave it in, we check for |
| 1124 | * ut_type==USER_PROCESS (indicating a login.) |
| 1125 | * |
| 1126 | * Portability: Some systems may set something other than USER_PROCESS |
| 1127 | * to indicate a login process. I don't know of any as I write. Also, |
| 1128 | * it's possible that some systems may both leave the username in |
| 1129 | * place and not have ut_type. |
| 1130 | */ |
| 1131 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1132 | /* return true if this wtmp entry indicates a login */ |
| 1133 | static int |
| 1134 | wtmp_islogin(struct logininfo *li, struct utmp *ut) |
| 1135 | { |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1136 | if (strncmp(li->username, ut->ut_name, |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1137 | MIN_SIZEOF(li->username, ut->ut_name)) == 0) { |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1138 | # ifdef HAVE_TYPE_IN_UTMP |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1139 | if (ut->ut_type & USER_PROCESS) |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1140 | return (1); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1141 | # else |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1142 | return (1); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1143 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1144 | } |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1145 | return (0); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1146 | } |
| 1147 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1148 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1149 | wtmp_get_entry(struct logininfo *li) |
| 1150 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1151 | struct stat st; |
| 1152 | struct utmp ut; |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1153 | int fd, found = 0; |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1154 | |
| 1155 | /* Clear the time entries in our logininfo */ |
| 1156 | li->tv_sec = li->tv_usec = 0; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1157 | |
| 1158 | if ((fd = open(WTMP_FILE, O_RDONLY)) < 0) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1159 | logit("%s: problem opening %s: %s", __func__, |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1160 | WTMP_FILE, strerror(errno)); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1161 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1162 | } |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1163 | if (fstat(fd, &st) != 0) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1164 | logit("%s: couldn't stat %s: %s", __func__, |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1165 | WTMP_FILE, strerror(errno)); |
| 1166 | close(fd); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1167 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1168 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1169 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1170 | /* Seek to the start of the last struct utmp */ |
Kevin Steves | 5217265 | 2001-10-02 00:29:00 +0000 | [diff] [blame] | 1171 | if (lseek(fd, -(off_t)sizeof(struct utmp), SEEK_END) == -1) { |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1172 | /* Looks like we've got a fresh wtmp file */ |
| 1173 | close(fd); |
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 | |
| 1177 | while (!found) { |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 1178 | if (atomicio(read, fd, &ut, sizeof(ut)) != sizeof(ut)) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1179 | logit("%s: read of %s failed: %s", __func__, |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1180 | WTMP_FILE, strerror(errno)); |
| 1181 | close (fd); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1182 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1183 | } |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1184 | if ( wtmp_islogin(li, &ut) ) { |
| 1185 | found = 1; |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1186 | /* |
| 1187 | * We've already checked for a time in struct |
| 1188 | * utmp, in login_getlast() |
| 1189 | */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1190 | # ifdef HAVE_TIME_IN_UTMP |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1191 | li->tv_sec = ut.ut_time; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1192 | # else |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1193 | # if HAVE_TV_IN_UTMP |
| 1194 | li->tv_sec = ut.ut_tv.tv_sec; |
| 1195 | # endif |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1196 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1197 | line_fullname(li->line, ut.ut_line, |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1198 | MIN_SIZEOF(li->line, ut.ut_line)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1199 | # ifdef HAVE_HOST_IN_UTMP |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1200 | strlcpy(li->hostname, ut.ut_host, |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1201 | MIN_SIZEOF(li->hostname, ut.ut_host)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1202 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1203 | continue; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1204 | } |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1205 | /* Seek back 2 x struct utmp */ |
Kevin Steves | 5217265 | 2001-10-02 00:29:00 +0000 | [diff] [blame] | 1206 | if (lseek(fd, -(off_t)(2 * sizeof(struct utmp)), SEEK_CUR) == -1) { |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1207 | /* We've found the start of the file, so quit */ |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1208 | close(fd); |
| 1209 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1210 | } |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1211 | } |
| 1212 | |
| 1213 | /* We found an entry. Tidy up and return */ |
| 1214 | close(fd); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1215 | return (1); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1216 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1217 | # endif /* USE_WTMP */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1218 | |
| 1219 | |
| 1220 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1221 | ** Low-level wtmpx functions |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1222 | **/ |
| 1223 | |
| 1224 | #ifdef USE_WTMPX |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1225 | /* |
| 1226 | * Write a wtmpx entry direct to the end of the file |
| 1227 | * This is a slight modification of code in OpenBSD's logwtmp.c |
| 1228 | */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1229 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1230 | wtmpx_write(struct logininfo *li, struct utmpx *utx) |
| 1231 | { |
Darren Tucker | c28b88a | 2004-02-10 16:49:35 +1100 | [diff] [blame] | 1232 | #ifndef HAVE_UPDWTMPX |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1233 | struct stat buf; |
| 1234 | int fd, ret = 1; |
| 1235 | |
| 1236 | if ((fd = open(WTMPX_FILE, O_WRONLY|O_APPEND, 0)) < 0) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1237 | logit("%s: problem opening %s: %s", __func__, |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1238 | WTMPX_FILE, strerror(errno)); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1239 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1240 | } |
| 1241 | |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1242 | if (fstat(fd, &buf) == 0) |
Darren Tucker | 8661b56 | 2003-07-06 15:20:46 +1000 | [diff] [blame] | 1243 | if (atomicio(vwrite, fd, utx, sizeof(*utx)) != sizeof(*utx)) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1244 | ftruncate(fd, buf.st_size); |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1245 | logit("%s: problem writing %s: %s", __func__, |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1246 | WTMPX_FILE, strerror(errno)); |
| 1247 | ret = 0; |
| 1248 | } |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1249 | close(fd); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1250 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1251 | return (ret); |
Darren Tucker | c28b88a | 2004-02-10 16:49:35 +1100 | [diff] [blame] | 1252 | #else |
| 1253 | updwtmpx(WTMPX_FILE, utx); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1254 | return (1); |
Darren Tucker | c28b88a | 2004-02-10 16:49:35 +1100 | [diff] [blame] | 1255 | #endif |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1256 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1257 | |
| 1258 | |
| 1259 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1260 | wtmpx_perform_login(struct logininfo *li) |
| 1261 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1262 | struct utmpx utx; |
| 1263 | |
| 1264 | construct_utmpx(li, &utx); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1265 | return (wtmpx_write(li, &utx)); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1266 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1267 | |
| 1268 | |
| 1269 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1270 | wtmpx_perform_logout(struct logininfo *li) |
| 1271 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1272 | struct utmpx utx; |
| 1273 | |
| 1274 | construct_utmpx(li, &utx); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1275 | return (wtmpx_write(li, &utx)); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1276 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1277 | |
| 1278 | |
| 1279 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1280 | wtmpx_write_entry(struct logininfo *li) |
| 1281 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1282 | switch(li->type) { |
| 1283 | case LTYPE_LOGIN: |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1284 | return (wtmpx_perform_login(li)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1285 | case LTYPE_LOGOUT: |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1286 | return (wtmpx_perform_logout(li)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1287 | default: |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1288 | logit("%s: invalid type field", __func__); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1289 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1290 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1291 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1292 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1293 | /* Please see the notes above wtmp_islogin() for information about the |
| 1294 | next two functions */ |
| 1295 | |
| 1296 | /* Return true if this wtmpx entry indicates a login */ |
| 1297 | static int |
| 1298 | wtmpx_islogin(struct logininfo *li, struct utmpx *utx) |
| 1299 | { |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1300 | if (strncmp(li->username, utx->ut_name, |
| 1301 | MIN_SIZEOF(li->username, utx->ut_name)) == 0 ) { |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1302 | # ifdef HAVE_TYPE_IN_UTMPX |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1303 | if (utx->ut_type == USER_PROCESS) |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1304 | return (1); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1305 | # else |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1306 | return (1); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1307 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1308 | } |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1309 | return (0); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1310 | } |
| 1311 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1312 | |
| 1313 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1314 | wtmpx_get_entry(struct logininfo *li) |
| 1315 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1316 | struct stat st; |
| 1317 | struct utmpx utx; |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1318 | int fd, found=0; |
| 1319 | |
| 1320 | /* Clear the time entries */ |
| 1321 | li->tv_sec = li->tv_usec = 0; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1322 | |
| 1323 | if ((fd = open(WTMPX_FILE, O_RDONLY)) < 0) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1324 | logit("%s: problem opening %s: %s", __func__, |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1325 | WTMPX_FILE, strerror(errno)); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1326 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1327 | } |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1328 | if (fstat(fd, &st) != 0) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1329 | logit("%s: couldn't stat %s: %s", __func__, |
Tim Rice | cdb8294 | 2002-07-14 15:33:20 -0700 | [diff] [blame] | 1330 | WTMPX_FILE, strerror(errno)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1331 | close(fd); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1332 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1333 | } |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1334 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1335 | /* Seek to the start of the last struct utmpx */ |
Kevin Steves | 5217265 | 2001-10-02 00:29:00 +0000 | [diff] [blame] | 1336 | if (lseek(fd, -(off_t)sizeof(struct utmpx), SEEK_END) == -1 ) { |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1337 | /* probably a newly rotated wtmpx file */ |
| 1338 | close(fd); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1339 | return (0); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1340 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1341 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1342 | while (!found) { |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 1343 | if (atomicio(read, fd, &utx, sizeof(utx)) != sizeof(utx)) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1344 | logit("%s: read of %s failed: %s", __func__, |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1345 | WTMPX_FILE, strerror(errno)); |
| 1346 | close (fd); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1347 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1348 | } |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1349 | /* |
| 1350 | * Logouts are recorded as a blank username on a particular |
| 1351 | * line. So, we just need to find the username in struct utmpx |
| 1352 | */ |
| 1353 | if (wtmpx_islogin(li, &utx)) { |
Tim Rice | 370e0ba | 2002-07-14 15:50:51 -0700 | [diff] [blame] | 1354 | found = 1; |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1355 | # if defined(HAVE_TV_IN_UTMPX) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1356 | li->tv_sec = utx.ut_tv.tv_sec; |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1357 | # elif defined(HAVE_TIME_IN_UTMPX) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1358 | li->tv_sec = utx.ut_time; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1359 | # endif |
Damien Miller | 1a13225 | 2000-06-13 21:23:17 +1000 | [diff] [blame] | 1360 | line_fullname(li->line, utx.ut_line, sizeof(li->line)); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1361 | # if defined(HAVE_HOST_IN_UTMPX) |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1362 | strlcpy(li->hostname, utx.ut_host, |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1363 | MIN_SIZEOF(li->hostname, utx.ut_host)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1364 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1365 | continue; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1366 | } |
Kevin Steves | 5217265 | 2001-10-02 00:29:00 +0000 | [diff] [blame] | 1367 | if (lseek(fd, -(off_t)(2 * sizeof(struct utmpx)), SEEK_CUR) == -1) { |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1368 | close(fd); |
| 1369 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1370 | } |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1371 | } |
| 1372 | |
| 1373 | close(fd); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1374 | return (1); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1375 | } |
Damien Miller | d5bf307 | 2000-06-07 21:32:13 +1000 | [diff] [blame] | 1376 | #endif /* USE_WTMPX */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1377 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1378 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1379 | ** Low-level libutil login() functions |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1380 | **/ |
| 1381 | |
| 1382 | #ifdef USE_LOGIN |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1383 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1384 | syslogin_perform_login(struct logininfo *li) |
| 1385 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1386 | struct utmp *ut; |
| 1387 | |
Damien Miller | b0aae33 | 2004-09-12 15:26:00 +1000 | [diff] [blame] | 1388 | ut = xmalloc(sizeof(*ut)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1389 | construct_utmp(li, ut); |
| 1390 | login(ut); |
Damien Miller | f211efc | 2003-03-10 11:23:06 +1100 | [diff] [blame] | 1391 | free(ut); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1392 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1393 | return (1); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1394 | } |
| 1395 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1396 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1397 | syslogin_perform_logout(struct logininfo *li) |
| 1398 | { |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1399 | # ifdef HAVE_LOGOUT |
Darren Tucker | 4d2f361 | 2004-04-08 10:57:05 +1000 | [diff] [blame] | 1400 | char line[UT_LINESIZE]; |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1401 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1402 | (void)line_stripname(line, li->line, sizeof(line)); |
| 1403 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1404 | if (!logout(line)) |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1405 | logit("%s: logout() returned an error", __func__); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1406 | # ifdef HAVE_LOGWTMP |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1407 | else |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1408 | logwtmp(line, "", ""); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1409 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1410 | /* FIXME: (ATL - if the need arises) What to do if we have |
| 1411 | * login, but no logout? what if logout but no logwtmp? All |
| 1412 | * routines are in libutil so they should all be there, |
| 1413 | * but... */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1414 | # endif |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1415 | return (1); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1416 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1417 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1418 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1419 | syslogin_write_entry(struct logininfo *li) |
| 1420 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1421 | switch (li->type) { |
| 1422 | case LTYPE_LOGIN: |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1423 | return (syslogin_perform_login(li)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1424 | case LTYPE_LOGOUT: |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1425 | return (syslogin_perform_logout(li)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1426 | default: |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1427 | logit("%s: Invalid type field", __func__); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1428 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1429 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1430 | } |
Damien Miller | d5bf307 | 2000-06-07 21:32:13 +1000 | [diff] [blame] | 1431 | #endif /* USE_LOGIN */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1432 | |
| 1433 | /* end of file log-syslogin.c */ |
| 1434 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1435 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1436 | ** Low-level lastlog functions |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1437 | **/ |
| 1438 | |
| 1439 | #ifdef USE_LASTLOG |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1440 | #define LL_FILE 1 |
| 1441 | #define LL_DIR 2 |
| 1442 | #define LL_OTHER 3 |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1443 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1444 | static void |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1445 | lastlog_construct(struct logininfo *li, struct lastlog *last) |
| 1446 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1447 | /* clear the structure */ |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 1448 | memset(last, '\0', sizeof(*last)); |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1449 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1450 | line_stripname(last->ll_line, li->line, sizeof(last->ll_line)); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1451 | strlcpy(last->ll_host, li->hostname, |
| 1452 | MIN_SIZEOF(last->ll_host, li->hostname)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1453 | last->ll_time = li->tv_sec; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1454 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1455 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1456 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1457 | lastlog_filetype(char *filename) |
| 1458 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1459 | struct stat st; |
| 1460 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1461 | if (stat(LASTLOG_FILE, &st) != 0) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1462 | logit("%s: Couldn't stat %s: %s", __func__, |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1463 | LASTLOG_FILE, strerror(errno)); |
| 1464 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1465 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1466 | if (S_ISDIR(st.st_mode)) |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1467 | return (LL_DIR); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1468 | else if (S_ISREG(st.st_mode)) |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1469 | return (LL_FILE); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1470 | else |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1471 | return (LL_OTHER); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1472 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1473 | |
| 1474 | |
| 1475 | /* open the file (using filemode) and seek to the login entry */ |
| 1476 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1477 | lastlog_openseek(struct logininfo *li, int *fd, int filemode) |
| 1478 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1479 | off_t offset; |
| 1480 | int type; |
| 1481 | char lastlog_file[1024]; |
| 1482 | |
| 1483 | type = lastlog_filetype(LASTLOG_FILE); |
| 1484 | switch (type) { |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1485 | case LL_FILE: |
| 1486 | strlcpy(lastlog_file, LASTLOG_FILE, |
| 1487 | sizeof(lastlog_file)); |
| 1488 | break; |
| 1489 | case LL_DIR: |
| 1490 | snprintf(lastlog_file, sizeof(lastlog_file), "%s/%s", |
| 1491 | LASTLOG_FILE, li->username); |
| 1492 | break; |
| 1493 | default: |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1494 | logit("%s: %.100s is not a file or directory!", __func__, |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1495 | LASTLOG_FILE); |
| 1496 | return (0); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1497 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1498 | |
Damien Miller | 405dc60 | 2003-04-09 21:12:52 +1000 | [diff] [blame] | 1499 | *fd = open(lastlog_file, filemode, 0600); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1500 | if (*fd < 0) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1501 | debug("%s: Couldn't open %s: %s", __func__, |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1502 | lastlog_file, strerror(errno)); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1503 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1504 | } |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1505 | |
Damien Miller | e477ef6 | 2000-08-15 10:21:17 +1000 | [diff] [blame] | 1506 | if (type == LL_FILE) { |
| 1507 | /* find this uid's offset in the lastlog file */ |
Kevin Steves | 5217265 | 2001-10-02 00:29:00 +0000 | [diff] [blame] | 1508 | offset = (off_t) ((long)li->uid * sizeof(struct lastlog)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1509 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1510 | if (lseek(*fd, offset, SEEK_SET) != offset) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1511 | logit("%s: %s->lseek(): %s", __func__, |
| 1512 | lastlog_file, strerror(errno)); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1513 | return (0); |
Damien Miller | e477ef6 | 2000-08-15 10:21:17 +1000 | [diff] [blame] | 1514 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1515 | } |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1516 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1517 | return (1); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1518 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1519 | |
| 1520 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1521 | lastlog_perform_login(struct logininfo *li) |
| 1522 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1523 | struct lastlog last; |
| 1524 | int fd; |
| 1525 | |
| 1526 | /* create our struct lastlog */ |
| 1527 | lastlog_construct(li, &last); |
| 1528 | |
Damien Miller | 405dc60 | 2003-04-09 21:12:52 +1000 | [diff] [blame] | 1529 | if (!lastlog_openseek(li, &fd, O_RDWR|O_CREAT)) |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1530 | return (0); |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1531 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1532 | /* write the entry */ |
Darren Tucker | 8661b56 | 2003-07-06 15:20:46 +1000 | [diff] [blame] | 1533 | if (atomicio(vwrite, fd, &last, sizeof(last)) != sizeof(last)) { |
Damien Miller | c1132e7 | 2000-08-18 14:08:38 +1000 | [diff] [blame] | 1534 | close(fd); |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1535 | logit("%s: Error writing to %s: %s", __func__, |
Damien Miller | c1132e7 | 2000-08-18 14:08:38 +1000 | [diff] [blame] | 1536 | LASTLOG_FILE, strerror(errno)); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1537 | return (0); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1538 | } |
Damien Miller | c1132e7 | 2000-08-18 14:08:38 +1000 | [diff] [blame] | 1539 | |
| 1540 | close(fd); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1541 | return (1); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1542 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1543 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1544 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1545 | lastlog_write_entry(struct logininfo *li) |
| 1546 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1547 | switch(li->type) { |
| 1548 | case LTYPE_LOGIN: |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1549 | return (lastlog_perform_login(li)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1550 | default: |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1551 | logit("%s: Invalid type field", __func__); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1552 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1553 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1554 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1555 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1556 | static void |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1557 | lastlog_populate_entry(struct logininfo *li, struct lastlog *last) |
| 1558 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1559 | line_fullname(li->line, last->ll_line, sizeof(li->line)); |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1560 | strlcpy(li->hostname, last->ll_host, |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1561 | MIN_SIZEOF(li->hostname, last->ll_host)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1562 | li->tv_sec = last->ll_time; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1563 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1564 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1565 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1566 | lastlog_get_entry(struct logininfo *li) |
| 1567 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1568 | struct lastlog last; |
Damien Miller | 7df881d | 2003-01-07 16:46:58 +1100 | [diff] [blame] | 1569 | int fd, ret; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1570 | |
Damien Miller | 3a8a5cd | 2001-10-22 16:49:22 +1000 | [diff] [blame] | 1571 | if (!lastlog_openseek(li, &fd, O_RDONLY)) |
Damien Miller | 7df881d | 2003-01-07 16:46:58 +1100 | [diff] [blame] | 1572 | return (0); |
Damien Miller | 3a8a5cd | 2001-10-22 16:49:22 +1000 | [diff] [blame] | 1573 | |
Damien Miller | 7df881d | 2003-01-07 16:46:58 +1100 | [diff] [blame] | 1574 | ret = atomicio(read, fd, &last, sizeof(last)); |
Damien Miller | 3a8a5cd | 2001-10-22 16:49:22 +1000 | [diff] [blame] | 1575 | close(fd); |
| 1576 | |
Damien Miller | 7df881d | 2003-01-07 16:46:58 +1100 | [diff] [blame] | 1577 | switch (ret) { |
| 1578 | case 0: |
| 1579 | memset(&last, '\0', sizeof(last)); |
| 1580 | /* FALLTHRU */ |
| 1581 | case sizeof(last): |
| 1582 | lastlog_populate_entry(li, &last); |
| 1583 | return (1); |
| 1584 | case -1: |
Damien Miller | a8e06ce | 2003-11-21 23:48:55 +1100 | [diff] [blame] | 1585 | error("%s: Error reading from %s: %s", __func__, |
Damien Miller | 7df881d | 2003-01-07 16:46:58 +1100 | [diff] [blame] | 1586 | LASTLOG_FILE, strerror(errno)); |
| 1587 | return (0); |
| 1588 | default: |
| 1589 | error("%s: Error reading from %s: Expecting %d, got %d", |
| 1590 | __func__, LASTLOG_FILE, sizeof(last), ret); |
| 1591 | return (0); |
| 1592 | } |
Damien Miller | 3a8a5cd | 2001-10-22 16:49:22 +1000 | [diff] [blame] | 1593 | |
Damien Miller | 7df881d | 2003-01-07 16:46:58 +1100 | [diff] [blame] | 1594 | /* NOTREACHED */ |
| 1595 | return (0); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1596 | } |
Damien Miller | d5bf307 | 2000-06-07 21:32:13 +1000 | [diff] [blame] | 1597 | #endif /* USE_LASTLOG */ |
Darren Tucker | 2fba993 | 2005-02-02 23:30:24 +1100 | [diff] [blame] | 1598 | |
| 1599 | #ifdef USE_BTMP |
| 1600 | /* |
| 1601 | * Logs failed login attempts in _PATH_BTMP if that exists. |
| 1602 | * The most common login failure is to give password instead of username. |
| 1603 | * So the _PATH_BTMP file checked for the correct permission, so that |
| 1604 | * only root can read it. |
| 1605 | */ |
| 1606 | |
| 1607 | void |
| 1608 | record_failed_login(const char *username, const char *hostname, |
| 1609 | const char *ttyn) |
| 1610 | { |
| 1611 | int fd; |
| 1612 | struct utmp ut; |
| 1613 | struct sockaddr_storage from; |
| 1614 | size_t fromlen = sizeof(from); |
| 1615 | struct sockaddr_in *a4; |
| 1616 | struct sockaddr_in6 *a6; |
| 1617 | time_t t; |
| 1618 | struct stat fst; |
| 1619 | |
| 1620 | if (geteuid() != 0) |
| 1621 | return; |
| 1622 | if ((fd = open(_PATH_BTMP, O_WRONLY | O_APPEND)) < 0) { |
| 1623 | debug("Unable to open the btmp file %s: %s", _PATH_BTMP, |
| 1624 | strerror(errno)); |
| 1625 | return; |
| 1626 | } |
| 1627 | if (fstat(fd, &fst) < 0) { |
| 1628 | logit("%s: fstat of %s failed: %s", __func__, _PATH_BTMP, |
| 1629 | strerror(errno)); |
| 1630 | goto out; |
| 1631 | } |
| 1632 | if((fst.st_mode & (S_IRWXG | S_IRWXO)) || (fst.st_uid != 0)){ |
| 1633 | logit("Excess permission or bad ownership on file %s", |
| 1634 | _PATH_BTMP); |
| 1635 | goto out; |
| 1636 | } |
| 1637 | |
| 1638 | memset(&ut, 0, sizeof(ut)); |
| 1639 | /* strncpy because we don't necessarily want nul termination */ |
| 1640 | strncpy(ut.ut_user, username, sizeof(ut.ut_user)); |
| 1641 | strlcpy(ut.ut_line, "ssh:notty", sizeof(ut.ut_line)); |
| 1642 | |
| 1643 | time(&t); |
| 1644 | ut.ut_time = t; /* ut_time is not always a time_t */ |
| 1645 | ut.ut_type = LOGIN_PROCESS; |
| 1646 | ut.ut_pid = getpid(); |
| 1647 | |
| 1648 | /* strncpy because we don't necessarily want nul termination */ |
| 1649 | strncpy(ut.ut_host, hostname, sizeof(ut.ut_host)); |
| 1650 | |
| 1651 | if (packet_connection_is_on_socket() && |
| 1652 | getpeername(packet_get_connection_in(), |
| 1653 | (struct sockaddr *)&from, &fromlen) == 0) { |
| 1654 | ipv64_normalise_mapped(&from, &fromlen); |
| 1655 | if (from.ss_family == AF_INET) { |
| 1656 | a4 = (struct sockaddr_in *)&from; |
| 1657 | memcpy(&ut.ut_addr, &(a4->sin_addr), |
| 1658 | MIN_SIZEOF(ut.ut_addr, a4->sin_addr)); |
| 1659 | } |
| 1660 | #ifdef HAVE_ADDR_V6_IN_UTMP |
| 1661 | if (from.ss_family == AF_INET6) { |
| 1662 | a6 = (struct sockaddr_in6 *)&from; |
| 1663 | memcpy(&ut.ut_addr_v6, &(a6->sin6_addr), |
| 1664 | MIN_SIZEOF(ut.ut_addr_v6, a6->sin6_addr)); |
| 1665 | } |
| 1666 | #endif |
| 1667 | } |
| 1668 | |
| 1669 | if (atomicio(vwrite, fd, &ut, sizeof(ut)) != sizeof(ut)) |
| 1670 | error("Failed to write to %s: %s", _PATH_BTMP, |
| 1671 | strerror(errno)); |
| 1672 | |
| 1673 | out: |
| 1674 | close(fd); |
| 1675 | } |
| 1676 | #endif /* USE_BTMP */ |