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" |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 157 | |
Ben Lindstrom | dcca981 | 2000-11-10 03:28:31 +0000 | [diff] [blame] | 158 | #ifdef HAVE_UTIL_H |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 159 | # include <util.h> |
Ben Lindstrom | dcca981 | 2000-11-10 03:28:31 +0000 | [diff] [blame] | 160 | #endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 161 | |
Ben Lindstrom | e2fb8d3 | 2000-12-28 00:07:07 +0000 | [diff] [blame] | 162 | #ifdef HAVE_LIBUTIL_H |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 163 | # include <libutil.h> |
Ben Lindstrom | e2fb8d3 | 2000-12-28 00:07:07 +0000 | [diff] [blame] | 164 | #endif |
| 165 | |
Darren Tucker | 2fba993 | 2005-02-02 23:30:24 +1100 | [diff] [blame^] | 166 | RCSID("$Id: loginrec.c,v 1.63 2005/02/02 12:30:25 dtucker Exp $"); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 167 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 168 | /** |
| 169 | ** prototypes for helper functions in this file |
| 170 | **/ |
| 171 | |
| 172 | #if HAVE_UTMP_H |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 173 | void set_utmp_time(struct logininfo *li, struct utmp *ut); |
| 174 | void construct_utmp(struct logininfo *li, struct utmp *ut); |
| 175 | #endif |
| 176 | |
| 177 | #ifdef HAVE_UTMPX_H |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 178 | void set_utmpx_time(struct logininfo *li, struct utmpx *ut); |
| 179 | void construct_utmpx(struct logininfo *li, struct utmpx *ut); |
| 180 | #endif |
| 181 | |
| 182 | int utmp_write_entry(struct logininfo *li); |
| 183 | int utmpx_write_entry(struct logininfo *li); |
| 184 | int wtmp_write_entry(struct logininfo *li); |
| 185 | int wtmpx_write_entry(struct logininfo *li); |
| 186 | int lastlog_write_entry(struct logininfo *li); |
| 187 | int syslogin_write_entry(struct logininfo *li); |
| 188 | |
| 189 | int getlast_entry(struct logininfo *li); |
| 190 | int lastlog_get_entry(struct logininfo *li); |
| 191 | int wtmp_get_entry(struct logininfo *li); |
| 192 | int wtmpx_get_entry(struct logininfo *li); |
| 193 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 194 | /* pick the shortest string */ |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 195 | #define MIN_SIZEOF(s1,s2) (sizeof(s1) < sizeof(s2) ? sizeof(s1) : sizeof(s2)) |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 196 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 197 | /** |
| 198 | ** platform-independent login functions |
| 199 | **/ |
| 200 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 201 | /* |
| 202 | * login_login(struct logininfo *) - Record a login |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 203 | * |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 204 | * Call with a pointer to a struct logininfo initialised with |
| 205 | * login_init_entry() or login_alloc_entry() |
| 206 | * |
| 207 | * Returns: |
| 208 | * >0 if successful |
| 209 | * 0 on failure (will use OpenSSH's logging facilities for diagnostics) |
| 210 | */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 211 | int |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 212 | login_login(struct logininfo *li) |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 213 | { |
| 214 | li->type = LTYPE_LOGIN; |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 215 | return (login_write(li)); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 216 | } |
| 217 | |
| 218 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 219 | /* |
| 220 | * login_logout(struct logininfo *) - Record a logout |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 221 | * |
| 222 | * Call as with login_login() |
| 223 | * |
| 224 | * Returns: |
| 225 | * >0 if successful |
| 226 | * 0 on failure (will use OpenSSH's logging facilities for diagnostics) |
| 227 | */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 228 | int |
| 229 | login_logout(struct logininfo *li) |
| 230 | { |
| 231 | li->type = LTYPE_LOGOUT; |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 232 | return (login_write(li)); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 233 | } |
| 234 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 235 | /* |
| 236 | * login_get_lastlog_time(int) - Retrieve the last login time |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 237 | * |
| 238 | * Retrieve the last login time for the given uid. Will try to use the |
| 239 | * system lastlog facilities if they are available, but will fall back |
| 240 | * to looking in wtmp/wtmpx if necessary |
| 241 | * |
| 242 | * Returns: |
| 243 | * 0 on failure, or if user has never logged in |
| 244 | * Time in seconds from the epoch if successful |
| 245 | * |
| 246 | * Useful preprocessor symbols: |
| 247 | * DISABLE_LASTLOG: If set, *never* even try to retrieve lastlog |
| 248 | * info |
| 249 | * USE_LASTLOG: If set, indicates the presence of system lastlog |
| 250 | * facilities. If this and DISABLE_LASTLOG are not set, |
| 251 | * try to retrieve lastlog information from wtmp/wtmpx. |
| 252 | */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 253 | unsigned int |
| 254 | login_get_lastlog_time(const int uid) |
| 255 | { |
| 256 | struct logininfo li; |
| 257 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 258 | if (login_get_lastlog(&li, uid)) |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 259 | return (li.tv_sec); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 260 | else |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 261 | return (0); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 262 | } |
| 263 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 264 | /* |
| 265 | * login_get_lastlog(struct logininfo *, int) - Retrieve a lastlog entry |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 266 | * |
| 267 | * Retrieve a logininfo structure populated (only partially) with |
| 268 | * information from the system lastlog data, or from wtmp/wtmpx if no |
| 269 | * system lastlog information exists. |
| 270 | * |
| 271 | * Note this routine must be given a pre-allocated logininfo. |
| 272 | * |
| 273 | * Returns: |
| 274 | * >0: A pointer to your struct logininfo if successful |
| 275 | * 0 on failure (will use OpenSSH's logging facilities for diagnostics) |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 276 | */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 277 | struct logininfo * |
| 278 | login_get_lastlog(struct logininfo *li, const int uid) |
| 279 | { |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 280 | struct passwd *pw; |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 281 | |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 282 | memset(li, '\0', sizeof(*li)); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 283 | li->uid = uid; |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 284 | |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 285 | /* |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 286 | * If we don't have a 'real' lastlog, we need the username to |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 287 | * reliably search wtmp(x) for the last login (see |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 288 | * wtmp_get_entry().) |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 289 | */ |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 290 | pw = getpwuid(uid); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 291 | if (pw == NULL) |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 292 | fatal("%s: Cannot find account for uid %i", __func__, uid); |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 293 | |
andre | 98cabe0 | 2000-06-19 09:11:30 +0000 | [diff] [blame] | 294 | /* No MIN_SIZEOF here - we absolutely *must not* truncate the |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 295 | * username (XXX - so check for trunc!) */ |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 296 | strlcpy(li->username, pw->pw_name, sizeof(li->username)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 297 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 298 | if (getlast_entry(li)) |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 299 | return (li); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 300 | else |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 301 | return (NULL); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 302 | } |
| 303 | |
| 304 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 305 | /* |
| 306 | * login_alloc_entry(int, char*, char*, char*) - Allocate and initialise |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 307 | * a logininfo structure |
| 308 | * |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 309 | * This function creates a new struct logininfo, a data structure |
| 310 | * meant to carry the information required to portably record login info. |
| 311 | * |
| 312 | * Returns a pointer to a newly created struct logininfo. If memory |
| 313 | * allocation fails, the program halts. |
| 314 | */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 315 | struct |
| 316 | logininfo *login_alloc_entry(int pid, const char *username, |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 317 | const char *hostname, const char *line) |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 318 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 319 | struct logininfo *newli; |
| 320 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 321 | newli = xmalloc(sizeof(*newli)); |
| 322 | login_init_entry(newli, pid, username, hostname, line); |
| 323 | return (newli); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 324 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 325 | |
| 326 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 327 | /* login_free_entry(struct logininfo *) - free struct memory */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 328 | void |
| 329 | login_free_entry(struct logininfo *li) |
| 330 | { |
| 331 | xfree(li); |
| 332 | } |
| 333 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 334 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 335 | /* login_init_entry(struct logininfo *, int, char*, char*, char*) |
| 336 | * - initialise a struct logininfo |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 337 | * |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 338 | * Populates a new struct logininfo, a data structure meant to carry |
| 339 | * the information required to portably record login info. |
| 340 | * |
| 341 | * Returns: 1 |
| 342 | */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 343 | int |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 344 | login_init_entry(struct logininfo *li, int pid, const char *username, |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 345 | const char *hostname, const char *line) |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 346 | { |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 347 | struct passwd *pw; |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 348 | |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 349 | memset(li, 0, sizeof(*li)); |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 350 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 351 | li->pid = pid; |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 352 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 353 | /* set the line information */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 354 | if (line) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 355 | line_fullname(li->line, line, sizeof(li->line)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 356 | |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 357 | if (username) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 358 | strlcpy(li->username, username, sizeof(li->username)); |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 359 | pw = getpwnam(li->username); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 360 | if (pw == NULL) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 361 | fatal("%s: Cannot find user \"%s\"", __func__, |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 362 | li->username); |
| 363 | } |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 364 | li->uid = pw->pw_uid; |
| 365 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 366 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 367 | if (hostname) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 368 | strlcpy(li->hostname, hostname, sizeof(li->hostname)); |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 369 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 370 | return (1); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 371 | } |
| 372 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 373 | /* |
| 374 | * login_set_current_time(struct logininfo *) - set the current time |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 375 | * |
| 376 | * Set the current time in a logininfo structure. This function is |
| 377 | * meant to eliminate the need to deal with system dependencies for |
| 378 | * time handling. |
| 379 | */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 380 | void |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 381 | login_set_current_time(struct logininfo *li) |
| 382 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 383 | struct timeval tv; |
| 384 | |
| 385 | gettimeofday(&tv, NULL); |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 386 | |
Damien Miller | f8af08d | 2000-06-27 09:40:06 +1000 | [diff] [blame] | 387 | li->tv_sec = tv.tv_sec; |
| 388 | li->tv_usec = tv.tv_usec; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 389 | } |
| 390 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 391 | /* copy a sockaddr_* into our logininfo */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 392 | void |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 393 | login_set_addr(struct logininfo *li, const struct sockaddr *sa, |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 394 | const unsigned int sa_size) |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 395 | { |
| 396 | unsigned int bufsize = sa_size; |
| 397 | |
| 398 | /* make sure we don't overrun our union */ |
| 399 | if (sizeof(li->hostaddr) < sa_size) |
| 400 | bufsize = sizeof(li->hostaddr); |
| 401 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 402 | memcpy(&li->hostaddr.sa, sa, bufsize); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 403 | } |
| 404 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 405 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 406 | /** |
| 407 | ** login_write: Call low-level recording functions based on autoconf |
| 408 | ** results |
| 409 | **/ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 410 | int |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 411 | login_write(struct logininfo *li) |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 412 | { |
Damien Miller | bac2d8a | 2000-09-05 16:13:06 +1100 | [diff] [blame] | 413 | #ifndef HAVE_CYGWIN |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 414 | if (geteuid() != 0) { |
| 415 | logit("Attempt to write login records by non-root user (aborting)"); |
| 416 | return (1); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 417 | } |
Damien Miller | bac2d8a | 2000-09-05 16:13:06 +1100 | [diff] [blame] | 418 | #endif |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 419 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 420 | /* set the timestamp */ |
| 421 | login_set_current_time(li); |
| 422 | #ifdef USE_LOGIN |
| 423 | syslogin_write_entry(li); |
| 424 | #endif |
| 425 | #ifdef USE_LASTLOG |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 426 | if (li->type == LTYPE_LOGIN) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 427 | lastlog_write_entry(li); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 428 | #endif |
| 429 | #ifdef USE_UTMP |
| 430 | utmp_write_entry(li); |
| 431 | #endif |
| 432 | #ifdef USE_WTMP |
| 433 | wtmp_write_entry(li); |
| 434 | #endif |
| 435 | #ifdef USE_UTMPX |
| 436 | utmpx_write_entry(li); |
| 437 | #endif |
| 438 | #ifdef USE_WTMPX |
| 439 | wtmpx_write_entry(li); |
| 440 | #endif |
Darren Tucker | 397a2f2 | 2004-08-15 00:09:11 +1000 | [diff] [blame] | 441 | #ifdef CUSTOM_SYS_AUTH_RECORD_LOGIN |
| 442 | if (li->type == LTYPE_LOGIN && |
| 443 | !sys_auth_record_login(li->username,li->hostname,li->line)) |
| 444 | logit("Writing login record failed for %s", li->username); |
| 445 | #endif |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 446 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 447 | } |
| 448 | |
Ben Lindstrom | 97c677d | 2001-05-08 20:33:05 +0000 | [diff] [blame] | 449 | #ifdef LOGIN_NEEDS_UTMPX |
| 450 | int |
| 451 | login_utmp_only(struct logininfo *li) |
| 452 | { |
Damien Miller | a8e06ce | 2003-11-21 23:48:55 +1100 | [diff] [blame] | 453 | li->type = LTYPE_LOGIN; |
Ben Lindstrom | 9197c59 | 2001-10-26 15:56:55 +0000 | [diff] [blame] | 454 | login_set_current_time(li); |
Ben Lindstrom | 97c677d | 2001-05-08 20:33:05 +0000 | [diff] [blame] | 455 | # ifdef USE_UTMP |
| 456 | utmp_write_entry(li); |
| 457 | # endif |
| 458 | # ifdef USE_WTMP |
| 459 | wtmp_write_entry(li); |
| 460 | # endif |
| 461 | # ifdef USE_UTMPX |
| 462 | utmpx_write_entry(li); |
| 463 | # endif |
| 464 | # ifdef USE_WTMPX |
| 465 | wtmpx_write_entry(li); |
| 466 | # endif |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 467 | return (0); |
Ben Lindstrom | 97c677d | 2001-05-08 20:33:05 +0000 | [diff] [blame] | 468 | } |
| 469 | #endif |
| 470 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 471 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 472 | ** getlast_entry: Call low-level functions to retrieve the last login |
| 473 | ** time. |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 474 | **/ |
| 475 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 476 | /* take the uid in li and return the last login time */ |
| 477 | int |
| 478 | getlast_entry(struct logininfo *li) |
| 479 | { |
| 480 | #ifdef USE_LASTLOG |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 481 | return(lastlog_get_entry(li)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 482 | #else /* !USE_LASTLOG */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 483 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 484 | #if defined(DISABLE_LASTLOG) |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 485 | /* On some systems we shouldn't even try to obtain last login |
andre | ecaabf1 | 2000-06-12 22:21:44 +0000 | [diff] [blame] | 486 | * time, e.g. AIX */ |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 487 | return (0); |
| 488 | # elif defined(USE_WTMP) && \ |
| 489 | (defined(HAVE_TIME_IN_UTMP) || defined(HAVE_TV_IN_UTMP)) |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 490 | /* retrieve last login time from utmp */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 491 | return (wtmp_get_entry(li)); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 492 | # elif defined(USE_WTMPX) && \ |
| 493 | (defined(HAVE_TIME_IN_UTMPX) || defined(HAVE_TV_IN_UTMPX)) |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 494 | /* If wtmp isn't available, try wtmpx */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 495 | return (wtmpx_get_entry(li)); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 496 | # else |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 497 | /* Give up: No means of retrieving last login time */ |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 498 | return (0); |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 499 | # endif /* DISABLE_LASTLOG */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 500 | #endif /* USE_LASTLOG */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 501 | } |
| 502 | |
| 503 | |
| 504 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 505 | /* |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 506 | * 'line' string utility functions |
| 507 | * |
| 508 | * These functions process the 'line' string into one of three forms: |
| 509 | * |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 510 | * 1. The full filename (including '/dev') |
| 511 | * 2. The stripped name (excluding '/dev') |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 512 | * 3. The abbreviated name (e.g. /dev/ttyp00 -> yp00 |
| 513 | * /dev/pts/1 -> ts/1 ) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 514 | * |
| 515 | * Form 3 is used on some systems to identify a .tmp.? entry when |
| 516 | * attempting to remove it. Typically both addition and removal is |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 517 | * performed by one application - say, sshd - so as long as the choice |
| 518 | * uniquely identifies a terminal it's ok. |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 519 | */ |
| 520 | |
| 521 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 522 | /* |
| 523 | * line_fullname(): add the leading '/dev/' if it doesn't exist make |
| 524 | * sure dst has enough space, if not just copy src (ugh) |
| 525 | */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 526 | char * |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 527 | line_fullname(char *dst, const char *src, int dstsize) |
| 528 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 529 | memset(dst, '\0', dstsize); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 530 | if ((strncmp(src, "/dev/", 5) == 0) || (dstsize < (strlen(src) + 5))) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 531 | strlcpy(dst, src, dstsize); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 532 | else { |
Damien Miller | 1a13225 | 2000-06-13 21:23:17 +1000 | [diff] [blame] | 533 | strlcpy(dst, "/dev/", dstsize); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 534 | strlcat(dst, src, dstsize); |
| 535 | } |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 536 | return (dst); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 537 | } |
| 538 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 539 | /* line_stripname(): strip the leading '/dev' if it exists, return dst */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 540 | char * |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 541 | line_stripname(char *dst, const char *src, int dstsize) |
| 542 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 543 | memset(dst, '\0', dstsize); |
| 544 | if (strncmp(src, "/dev/", 5) == 0) |
Damien Miller | f5a8147 | 2000-09-30 21:34:44 +1100 | [diff] [blame] | 545 | strlcpy(dst, src + 5, dstsize); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 546 | else |
| 547 | strlcpy(dst, src, dstsize); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 548 | return (dst); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 549 | } |
| 550 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 551 | /* |
| 552 | * line_abbrevname(): Return the abbreviated (usually four-character) |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 553 | * form of the line (Just use the last <dstsize> characters of the |
| 554 | * full name.) |
| 555 | * |
| 556 | * NOTE: use strncpy because we do NOT necessarily want zero |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 557 | * termination |
| 558 | */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 559 | char * |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 560 | line_abbrevname(char *dst, const char *src, int dstsize) |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 561 | { |
| 562 | size_t len; |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 563 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 564 | memset(dst, '\0', dstsize); |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 565 | |
Damien Miller | 8e81ed3 | 2000-07-01 13:17:42 +1000 | [diff] [blame] | 566 | /* Always skip prefix if present */ |
| 567 | if (strncmp(src, "/dev/", 5) == 0) |
| 568 | src += 5; |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 569 | |
Damien Miller | f1b9d11 | 2002-04-23 23:09:19 +1000 | [diff] [blame] | 570 | #ifdef WITH_ABBREV_NO_TTY |
| 571 | if (strncmp(src, "tty", 3) == 0) |
| 572 | src += 3; |
| 573 | #endif |
| 574 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 575 | len = strlen(src); |
| 576 | |
Damien Miller | 8e81ed3 | 2000-07-01 13:17:42 +1000 | [diff] [blame] | 577 | if (len > 0) { |
| 578 | if (((int)len - dstsize) > 0) |
| 579 | src += ((int)len - dstsize); |
| 580 | |
| 581 | /* note: _don't_ change this to strlcpy */ |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 582 | strncpy(dst, src, (size_t)dstsize); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 583 | } |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 584 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 585 | return (dst); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 586 | } |
| 587 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 588 | /** |
| 589 | ** utmp utility functions |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 590 | ** |
| 591 | ** These functions manipulate struct utmp, taking system differences |
| 592 | ** into account. |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 593 | **/ |
| 594 | |
| 595 | #if defined(USE_UTMP) || defined (USE_WTMP) || defined (USE_LOGIN) |
| 596 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 597 | /* build the utmp structure */ |
| 598 | void |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 599 | set_utmp_time(struct logininfo *li, struct utmp *ut) |
| 600 | { |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 601 | # if defined(HAVE_TV_IN_UTMP) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 602 | ut->ut_tv.tv_sec = li->tv_sec; |
| 603 | ut->ut_tv.tv_usec = li->tv_usec; |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 604 | # elif defined(HAVE_TIME_IN_UTMP) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 605 | ut->ut_time = li->tv_sec; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 606 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 607 | } |
| 608 | |
| 609 | void |
| 610 | construct_utmp(struct logininfo *li, |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 611 | struct utmp *ut) |
| 612 | { |
Damien Miller | 02e16ad | 2003-01-03 14:42:27 +1100 | [diff] [blame] | 613 | # ifdef HAVE_ADDR_V6_IN_UTMP |
| 614 | struct sockaddr_in6 *sa6; |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 615 | # endif |
| 616 | |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 617 | memset(ut, '\0', sizeof(*ut)); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 618 | |
| 619 | /* First fill out fields used for both logins and logouts */ |
| 620 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 621 | # ifdef HAVE_ID_IN_UTMP |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 622 | line_abbrevname(ut->ut_id, li->line, sizeof(ut->ut_id)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 623 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 624 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 625 | # ifdef HAVE_TYPE_IN_UTMP |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 626 | /* This is done here to keep utmp constants out of struct logininfo */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 627 | switch (li->type) { |
| 628 | case LTYPE_LOGIN: |
| 629 | ut->ut_type = USER_PROCESS; |
Tim Rice | 81ed518 | 2002-09-25 17:38:46 -0700 | [diff] [blame] | 630 | #ifdef _UNICOS |
Ben Lindstrom | 6db66ff | 2001-08-06 23:29:16 +0000 | [diff] [blame] | 631 | cray_set_tmpdir(ut); |
| 632 | #endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 633 | break; |
| 634 | case LTYPE_LOGOUT: |
| 635 | ut->ut_type = DEAD_PROCESS; |
Tim Rice | 81ed518 | 2002-09-25 17:38:46 -0700 | [diff] [blame] | 636 | #ifdef _UNICOS |
Ben Lindstrom | 6db66ff | 2001-08-06 23:29:16 +0000 | [diff] [blame] | 637 | cray_retain_utmp(ut, li->pid); |
| 638 | #endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 639 | break; |
| 640 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 641 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 642 | set_utmp_time(li, ut); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 643 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 644 | line_stripname(ut->ut_line, li->line, sizeof(ut->ut_line)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 645 | |
| 646 | # ifdef HAVE_PID_IN_UTMP |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 647 | ut->ut_pid = li->pid; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 648 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 649 | |
| 650 | /* If we're logging out, leave all other fields blank */ |
| 651 | if (li->type == LTYPE_LOGOUT) |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 652 | return; |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 653 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 654 | /* |
| 655 | * These fields are only used when logging in, and are blank |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 656 | * for logouts. |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 657 | */ |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 658 | |
| 659 | /* Use strncpy because we don't necessarily want null termination */ |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 660 | strncpy(ut->ut_name, li->username, |
| 661 | MIN_SIZEOF(ut->ut_name, li->username)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 662 | # ifdef HAVE_HOST_IN_UTMP |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 663 | strncpy(ut->ut_host, li->hostname, |
| 664 | MIN_SIZEOF(ut->ut_host, li->hostname)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 665 | # endif |
| 666 | # ifdef HAVE_ADDR_IN_UTMP |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 667 | /* this is just a 32-bit IP address */ |
| 668 | if (li->hostaddr.sa.sa_family == AF_INET) |
| 669 | ut->ut_addr = li->hostaddr.sa_in.sin_addr.s_addr; |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 670 | # endif |
Damien Miller | 02e16ad | 2003-01-03 14:42:27 +1100 | [diff] [blame] | 671 | # ifdef HAVE_ADDR_V6_IN_UTMP |
| 672 | /* this is just a 128-bit IPv6 address */ |
| 673 | if (li->hostaddr.sa.sa_family == AF_INET6) { |
| 674 | sa6 = ((struct sockaddr_in6 *)&li->hostaddr.sa); |
| 675 | memcpy(ut->ut_addr_v6, sa6->sin6_addr.s6_addr, 16); |
| 676 | if (IN6_IS_ADDR_V4MAPPED(&sa6->sin6_addr)) { |
| 677 | ut->ut_addr_v6[0] = ut->ut_addr_v6[3]; |
| 678 | ut->ut_addr_v6[1] = 0; |
| 679 | ut->ut_addr_v6[2] = 0; |
| 680 | ut->ut_addr_v6[3] = 0; |
| 681 | } |
| 682 | } |
| 683 | # endif |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 684 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 685 | #endif /* USE_UTMP || USE_WTMP || USE_LOGIN */ |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 686 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 687 | /** |
| 688 | ** utmpx utility functions |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 689 | ** |
| 690 | ** These functions manipulate struct utmpx, accounting for system |
| 691 | ** variations. |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 692 | **/ |
| 693 | |
| 694 | #if defined(USE_UTMPX) || defined (USE_WTMPX) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 695 | /* build the utmpx structure */ |
| 696 | void |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 697 | set_utmpx_time(struct logininfo *li, struct utmpx *utx) |
| 698 | { |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 699 | # if defined(HAVE_TV_IN_UTMPX) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 700 | utx->ut_tv.tv_sec = li->tv_sec; |
| 701 | utx->ut_tv.tv_usec = li->tv_usec; |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 702 | # elif defined(HAVE_TIME_IN_UTMPX) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 703 | utx->ut_time = li->tv_sec; |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 704 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 705 | } |
| 706 | |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 707 | void |
| 708 | construct_utmpx(struct logininfo *li, struct utmpx *utx) |
| 709 | { |
Damien Miller | 02e16ad | 2003-01-03 14:42:27 +1100 | [diff] [blame] | 710 | # ifdef HAVE_ADDR_V6_IN_UTMP |
| 711 | struct sockaddr_in6 *sa6; |
| 712 | # endif |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 713 | memset(utx, '\0', sizeof(*utx)); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 714 | |
Damien Miller | 8e81ed3 | 2000-07-01 13:17:42 +1000 | [diff] [blame] | 715 | # ifdef HAVE_ID_IN_UTMPX |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 716 | line_abbrevname(utx->ut_id, li->line, sizeof(utx->ut_id)); |
Damien Miller | 8e81ed3 | 2000-07-01 13:17:42 +1000 | [diff] [blame] | 717 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 718 | |
| 719 | /* this is done here to keep utmp constants out of loginrec.h */ |
| 720 | switch (li->type) { |
| 721 | case LTYPE_LOGIN: |
| 722 | utx->ut_type = USER_PROCESS; |
| 723 | break; |
| 724 | case LTYPE_LOGOUT: |
| 725 | utx->ut_type = DEAD_PROCESS; |
| 726 | break; |
| 727 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 728 | line_stripname(utx->ut_line, li->line, sizeof(utx->ut_line)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 729 | set_utmpx_time(li, utx); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 730 | utx->ut_pid = li->pid; |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 731 | |
Tim Rice | e06ae4a | 2002-02-24 17:56:46 -0800 | [diff] [blame] | 732 | /* strncpy(): Don't necessarily want null termination */ |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 733 | strncpy(utx->ut_name, li->username, |
| 734 | MIN_SIZEOF(utx->ut_name, li->username)); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 735 | |
| 736 | if (li->type == LTYPE_LOGOUT) |
| 737 | return; |
| 738 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 739 | /* |
| 740 | * These fields are only used when logging in, and are blank |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 741 | * for logouts. |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 742 | */ |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 743 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 744 | # ifdef HAVE_HOST_IN_UTMPX |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 745 | strncpy(utx->ut_host, li->hostname, |
| 746 | MIN_SIZEOF(utx->ut_host, li->hostname)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 747 | # endif |
| 748 | # ifdef HAVE_ADDR_IN_UTMPX |
Damien Miller | d6f204d | 2000-09-23 13:57:27 +1100 | [diff] [blame] | 749 | /* this is just a 32-bit IP address */ |
| 750 | if (li->hostaddr.sa.sa_family == AF_INET) |
| 751 | utx->ut_addr = li->hostaddr.sa_in.sin_addr.s_addr; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 752 | # endif |
Damien Miller | 02e16ad | 2003-01-03 14:42:27 +1100 | [diff] [blame] | 753 | # ifdef HAVE_ADDR_V6_IN_UTMP |
| 754 | /* this is just a 128-bit IPv6 address */ |
| 755 | if (li->hostaddr.sa.sa_family == AF_INET6) { |
| 756 | sa6 = ((struct sockaddr_in6 *)&li->hostaddr.sa); |
| 757 | memcpy(ut->ut_addr_v6, sa6->sin6_addr.s6_addr, 16); |
| 758 | if (IN6_IS_ADDR_V4MAPPED(&sa6->sin6_addr)) { |
| 759 | ut->ut_addr_v6[0] = ut->ut_addr_v6[3]; |
| 760 | ut->ut_addr_v6[1] = 0; |
| 761 | ut->ut_addr_v6[2] = 0; |
| 762 | ut->ut_addr_v6[3] = 0; |
| 763 | } |
| 764 | } |
| 765 | # endif |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 766 | # ifdef HAVE_SYSLEN_IN_UTMPX |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 767 | /* ut_syslen is the length of the utx_host string */ |
| 768 | utx->ut_syslen = MIN(strlen(li->hostname), sizeof(utx->ut_host)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 769 | # endif |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 770 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 771 | #endif /* USE_UTMPX || USE_WTMPX */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 772 | |
| 773 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 774 | ** Low-level utmp functions |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 775 | **/ |
| 776 | |
| 777 | /* FIXME: (ATL) utmp_write_direct needs testing */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 778 | #ifdef USE_UTMP |
| 779 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 780 | /* if we can, use pututline() etc. */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 781 | # if !defined(DISABLE_PUTUTLINE) && defined(HAVE_SETUTENT) && \ |
| 782 | defined(HAVE_PUTUTLINE) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 783 | # define UTMP_USE_LIBRARY |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 784 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 785 | |
| 786 | |
| 787 | /* write a utmp entry with the system's help (pututline() and pals) */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 788 | # ifdef UTMP_USE_LIBRARY |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 789 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 790 | utmp_write_library(struct logininfo *li, struct utmp *ut) |
| 791 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 792 | setutent(); |
| 793 | pututline(ut); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 794 | # ifdef HAVE_ENDUTENT |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 795 | endutent(); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 796 | # endif |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 797 | return (1); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 798 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 799 | # else /* UTMP_USE_LIBRARY */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 800 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 801 | /* |
| 802 | * Write a utmp entry direct to the file |
| 803 | * This is a slightly modification of code in OpenBSD's login.c |
| 804 | */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 805 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 806 | utmp_write_direct(struct logininfo *li, struct utmp *ut) |
| 807 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 808 | struct utmp old_ut; |
| 809 | register int fd; |
| 810 | int tty; |
| 811 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 812 | /* FIXME: (ATL) ttyslot() needs local implementation */ |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 813 | |
Damien Miller | e5192fa | 2000-08-29 14:30:37 +1100 | [diff] [blame] | 814 | #if defined(HAVE_GETTTYENT) |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 815 | struct ttyent *ty; |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 816 | |
| 817 | tty=0; |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 818 | setttyent(); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 819 | while (NULL != (ty = getttyent())) { |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 820 | tty++; |
| 821 | if (!strncmp(ty->ty_name, ut->ut_line, sizeof(ut->ut_line))) |
| 822 | break; |
| 823 | } |
| 824 | endttyent(); |
| 825 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 826 | if (NULL == ty) { |
Damien Miller | 8140959 | 2004-08-15 19:12:52 +1000 | [diff] [blame] | 827 | logit("%s: tty not found", __func__); |
| 828 | return (0); |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 829 | } |
| 830 | #else /* FIXME */ |
| 831 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 832 | tty = ttyslot(); /* seems only to work for /dev/ttyp? style names */ |
| 833 | |
Damien Miller | e5192fa | 2000-08-29 14:30:37 +1100 | [diff] [blame] | 834 | #endif /* HAVE_GETTTYENT */ |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 835 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 836 | 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] | 837 | off_t pos, ret; |
| 838 | |
| 839 | pos = (off_t)tty * sizeof(struct utmp); |
| 840 | if ((ret = lseek(fd, pos, SEEK_SET)) == -1) { |
Damien Miller | b0419f2 | 2004-08-23 21:53:28 +1000 | [diff] [blame] | 841 | logit("%s: lseek: %s", __func__, strerror(errno)); |
Damien Miller | 8140959 | 2004-08-15 19:12:52 +1000 | [diff] [blame] | 842 | return (0); |
| 843 | } |
| 844 | if (ret != pos) { |
Damien Miller | b0419f2 | 2004-08-23 21:53:28 +1000 | [diff] [blame] | 845 | logit("%s: Couldn't seek to tty %d slot in %s", |
| 846 | __func__, tty, UTMP_FILE); |
Damien Miller | 8140959 | 2004-08-15 19:12:52 +1000 | [diff] [blame] | 847 | return (0); |
| 848 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 849 | /* |
| 850 | * Prevent luser from zero'ing out ut_host. |
| 851 | * 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] | 852 | * and ut_line and ut_name match, preserve the old ut_line. |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 853 | */ |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 854 | if (atomicio(read, fd, &old_ut, sizeof(old_ut)) == sizeof(old_ut) && |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 855 | (ut->ut_host[0] == '\0') && (old_ut.ut_host[0] != '\0') && |
| 856 | (strncmp(old_ut.ut_line, ut->ut_line, sizeof(ut->ut_line)) == 0) && |
| 857 | (strncmp(old_ut.ut_name, ut->ut_name, sizeof(ut->ut_name)) == 0)) |
| 858 | memcpy(ut->ut_host, old_ut.ut_host, sizeof(ut->ut_host)); |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 859 | |
Damien Miller | 8140959 | 2004-08-15 19:12:52 +1000 | [diff] [blame] | 860 | if ((ret = lseek(fd, pos, SEEK_SET)) == -1) { |
Damien Miller | b0419f2 | 2004-08-23 21:53:28 +1000 | [diff] [blame] | 861 | logit("%s: lseek: %s", __func__, strerror(errno)); |
Damien Miller | 8140959 | 2004-08-15 19:12:52 +1000 | [diff] [blame] | 862 | return (0); |
| 863 | } |
| 864 | if (ret != pos) { |
Damien Miller | b0419f2 | 2004-08-23 21:53:28 +1000 | [diff] [blame] | 865 | logit("%s: Couldn't seek to tty %d slot in %s", |
Damien Miller | 8140959 | 2004-08-15 19:12:52 +1000 | [diff] [blame] | 866 | __func__, tty, UTMP_FILE); |
| 867 | return (0); |
| 868 | } |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 869 | if (atomicio(vwrite, fd, ut, sizeof(*ut)) != sizeof(*ut)) { |
Damien Miller | 8140959 | 2004-08-15 19:12:52 +1000 | [diff] [blame] | 870 | logit("%s: error writing %s: %s", __func__, |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 871 | UTMP_FILE, strerror(errno)); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 872 | } |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 873 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 874 | close(fd); |
| 875 | return (1); |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 876 | } else { |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 877 | return (0); |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 878 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 879 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 880 | # endif /* UTMP_USE_LIBRARY */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 881 | |
| 882 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 883 | utmp_perform_login(struct logininfo *li) |
| 884 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 885 | struct utmp ut; |
| 886 | |
| 887 | construct_utmp(li, &ut); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 888 | # ifdef UTMP_USE_LIBRARY |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 889 | if (!utmp_write_library(li, &ut)) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 890 | logit("%s: utmp_write_library() failed", __func__); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 891 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 892 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 893 | # else |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 894 | if (!utmp_write_direct(li, &ut)) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 895 | logit("%s: utmp_write_direct() failed", __func__); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 896 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 897 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 898 | # endif |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 899 | return (1); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 900 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 901 | |
| 902 | |
| 903 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 904 | utmp_perform_logout(struct logininfo *li) |
| 905 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 906 | struct utmp ut; |
| 907 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 908 | construct_utmp(li, &ut); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 909 | # ifdef UTMP_USE_LIBRARY |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 910 | if (!utmp_write_library(li, &ut)) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 911 | logit("%s: utmp_write_library() failed", __func__); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 912 | return (0); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 913 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 914 | # else |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 915 | if (!utmp_write_direct(li, &ut)) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 916 | logit("%s: utmp_write_direct() failed", __func__); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 917 | return (0); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 918 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 919 | # endif |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 920 | return (1); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 921 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 922 | |
| 923 | |
| 924 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 925 | utmp_write_entry(struct logininfo *li) |
| 926 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 927 | switch(li->type) { |
| 928 | case LTYPE_LOGIN: |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 929 | return (utmp_perform_login(li)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 930 | |
| 931 | case LTYPE_LOGOUT: |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 932 | return (utmp_perform_logout(li)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 933 | |
| 934 | default: |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 935 | logit("%s: invalid type field", __func__); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 936 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 937 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 938 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 939 | #endif /* USE_UTMP */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 940 | |
| 941 | |
| 942 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 943 | ** Low-level utmpx functions |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 944 | **/ |
| 945 | |
| 946 | /* not much point if we don't want utmpx entries */ |
| 947 | #ifdef USE_UTMPX |
| 948 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 949 | /* if we have the wherewithall, use pututxline etc. */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 950 | # if !defined(DISABLE_PUTUTXLINE) && defined(HAVE_SETUTXENT) && \ |
| 951 | defined(HAVE_PUTUTXLINE) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 952 | # define UTMPX_USE_LIBRARY |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 953 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 954 | |
| 955 | |
| 956 | /* write a utmpx entry with the system's help (pututxline() and pals) */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 957 | # ifdef UTMPX_USE_LIBRARY |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 958 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 959 | utmpx_write_library(struct logininfo *li, struct utmpx *utx) |
| 960 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 961 | setutxent(); |
| 962 | pututxline(utx); |
| 963 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 964 | # ifdef HAVE_ENDUTXENT |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 965 | endutxent(); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 966 | # endif |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 967 | return (1); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 968 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 969 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 970 | # else /* UTMPX_USE_LIBRARY */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 971 | |
| 972 | /* write a utmp entry direct to the file */ |
| 973 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 974 | utmpx_write_direct(struct logininfo *li, struct utmpx *utx) |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 975 | { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 976 | logit("%s: not implemented!", __func__); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 977 | return (0); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 978 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 979 | # endif /* UTMPX_USE_LIBRARY */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 980 | |
| 981 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 982 | utmpx_perform_login(struct logininfo *li) |
| 983 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 984 | struct utmpx utx; |
| 985 | |
| 986 | construct_utmpx(li, &utx); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 987 | # ifdef UTMPX_USE_LIBRARY |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 988 | if (!utmpx_write_library(li, &utx)) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 989 | logit("%s: utmp_write_library() failed", __func__); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 990 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 991 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 992 | # else |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 993 | if (!utmpx_write_direct(li, &ut)) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 994 | logit("%s: utmp_write_direct() failed", __func__); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 995 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 996 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 997 | # endif |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 998 | return (1); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 999 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1000 | |
| 1001 | |
| 1002 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1003 | utmpx_perform_logout(struct logininfo *li) |
| 1004 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1005 | struct utmpx utx; |
| 1006 | |
Tim Rice | e06ae4a | 2002-02-24 17:56:46 -0800 | [diff] [blame] | 1007 | construct_utmpx(li, &utx); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1008 | # ifdef HAVE_ID_IN_UTMPX |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1009 | line_abbrevname(utx.ut_id, li->line, sizeof(utx.ut_id)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1010 | # endif |
| 1011 | # ifdef HAVE_TYPE_IN_UTMPX |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1012 | utx.ut_type = DEAD_PROCESS; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1013 | # endif |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1014 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1015 | # ifdef UTMPX_USE_LIBRARY |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1016 | utmpx_write_library(li, &utx); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1017 | # else |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1018 | utmpx_write_direct(li, &utx); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1019 | # endif |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1020 | return (1); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1021 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1022 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1023 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1024 | utmpx_write_entry(struct logininfo *li) |
| 1025 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1026 | switch(li->type) { |
| 1027 | case LTYPE_LOGIN: |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1028 | return (utmpx_perform_login(li)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1029 | case LTYPE_LOGOUT: |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1030 | return (utmpx_perform_logout(li)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1031 | default: |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1032 | logit("%s: invalid type field", __func__); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1033 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1034 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1035 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1036 | #endif /* USE_UTMPX */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1037 | |
| 1038 | |
| 1039 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1040 | ** Low-level wtmp functions |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1041 | **/ |
| 1042 | |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1043 | #ifdef USE_WTMP |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1044 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1045 | /* |
| 1046 | * Write a wtmp entry direct to the end of the file |
| 1047 | * This is a slight modification of code in OpenBSD's logwtmp.c |
| 1048 | */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1049 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1050 | wtmp_write(struct logininfo *li, struct utmp *ut) |
| 1051 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1052 | struct stat buf; |
| 1053 | int fd, ret = 1; |
| 1054 | |
| 1055 | if ((fd = open(WTMP_FILE, O_WRONLY|O_APPEND, 0)) < 0) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1056 | logit("%s: problem writing %s: %s", __func__, |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1057 | WTMP_FILE, strerror(errno)); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1058 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1059 | } |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1060 | if (fstat(fd, &buf) == 0) |
Darren Tucker | 8661b56 | 2003-07-06 15:20:46 +1000 | [diff] [blame] | 1061 | if (atomicio(vwrite, fd, ut, sizeof(*ut)) != sizeof(*ut)) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1062 | ftruncate(fd, buf.st_size); |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1063 | logit("%s: problem writing %s: %s", __func__, |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1064 | WTMP_FILE, strerror(errno)); |
| 1065 | ret = 0; |
| 1066 | } |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1067 | close(fd); |
| 1068 | return (ret); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1069 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1070 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1071 | static int |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1072 | wtmp_perform_login(struct logininfo *li) |
| 1073 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1074 | struct utmp ut; |
| 1075 | |
| 1076 | construct_utmp(li, &ut); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1077 | return (wtmp_write(li, &ut)); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1078 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1079 | |
| 1080 | |
| 1081 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1082 | wtmp_perform_logout(struct logininfo *li) |
| 1083 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1084 | struct utmp ut; |
| 1085 | |
| 1086 | construct_utmp(li, &ut); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1087 | return (wtmp_write(li, &ut)); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1088 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1089 | |
| 1090 | |
| 1091 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1092 | wtmp_write_entry(struct logininfo *li) |
| 1093 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1094 | switch(li->type) { |
| 1095 | case LTYPE_LOGIN: |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1096 | return (wtmp_perform_login(li)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1097 | case LTYPE_LOGOUT: |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1098 | return (wtmp_perform_logout(li)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1099 | default: |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1100 | logit("%s: invalid type field", __func__); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1101 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1102 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1103 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1104 | |
| 1105 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1106 | /* |
| 1107 | * Notes on fetching login data from wtmp/wtmpx |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1108 | * |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1109 | * Logouts are usually recorded with (amongst other things) a blank |
| 1110 | * username on a given tty line. However, some systems (HP-UX is one) |
| 1111 | * leave all fields set, but change the ut_type field to DEAD_PROCESS. |
| 1112 | * |
| 1113 | * Since we're only looking for logins here, we know that the username |
| 1114 | * must be set correctly. On systems that leave it in, we check for |
| 1115 | * ut_type==USER_PROCESS (indicating a login.) |
| 1116 | * |
| 1117 | * Portability: Some systems may set something other than USER_PROCESS |
| 1118 | * to indicate a login process. I don't know of any as I write. Also, |
| 1119 | * it's possible that some systems may both leave the username in |
| 1120 | * place and not have ut_type. |
| 1121 | */ |
| 1122 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1123 | /* return true if this wtmp entry indicates a login */ |
| 1124 | static int |
| 1125 | wtmp_islogin(struct logininfo *li, struct utmp *ut) |
| 1126 | { |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1127 | if (strncmp(li->username, ut->ut_name, |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1128 | MIN_SIZEOF(li->username, ut->ut_name)) == 0) { |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1129 | # ifdef HAVE_TYPE_IN_UTMP |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1130 | if (ut->ut_type & USER_PROCESS) |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1131 | return (1); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1132 | # else |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1133 | return (1); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1134 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1135 | } |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1136 | return (0); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1137 | } |
| 1138 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1139 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1140 | wtmp_get_entry(struct logininfo *li) |
| 1141 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1142 | struct stat st; |
| 1143 | struct utmp ut; |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1144 | int fd, found = 0; |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1145 | |
| 1146 | /* Clear the time entries in our logininfo */ |
| 1147 | li->tv_sec = li->tv_usec = 0; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1148 | |
| 1149 | if ((fd = open(WTMP_FILE, O_RDONLY)) < 0) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1150 | logit("%s: problem opening %s: %s", __func__, |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1151 | WTMP_FILE, strerror(errno)); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1152 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1153 | } |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1154 | if (fstat(fd, &st) != 0) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1155 | logit("%s: couldn't stat %s: %s", __func__, |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1156 | WTMP_FILE, strerror(errno)); |
| 1157 | close(fd); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1158 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1159 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1160 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1161 | /* Seek to the start of the last struct utmp */ |
Kevin Steves | 5217265 | 2001-10-02 00:29:00 +0000 | [diff] [blame] | 1162 | if (lseek(fd, -(off_t)sizeof(struct utmp), SEEK_END) == -1) { |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1163 | /* Looks like we've got a fresh wtmp file */ |
| 1164 | close(fd); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1165 | return (0); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1166 | } |
| 1167 | |
| 1168 | while (!found) { |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 1169 | if (atomicio(read, fd, &ut, sizeof(ut)) != sizeof(ut)) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1170 | logit("%s: read of %s failed: %s", __func__, |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1171 | WTMP_FILE, strerror(errno)); |
| 1172 | close (fd); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1173 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1174 | } |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1175 | if ( wtmp_islogin(li, &ut) ) { |
| 1176 | found = 1; |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1177 | /* |
| 1178 | * We've already checked for a time in struct |
| 1179 | * utmp, in login_getlast() |
| 1180 | */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1181 | # ifdef HAVE_TIME_IN_UTMP |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1182 | li->tv_sec = ut.ut_time; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1183 | # else |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1184 | # if HAVE_TV_IN_UTMP |
| 1185 | li->tv_sec = ut.ut_tv.tv_sec; |
| 1186 | # endif |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1187 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1188 | line_fullname(li->line, ut.ut_line, |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1189 | MIN_SIZEOF(li->line, ut.ut_line)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1190 | # ifdef HAVE_HOST_IN_UTMP |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1191 | strlcpy(li->hostname, ut.ut_host, |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1192 | MIN_SIZEOF(li->hostname, ut.ut_host)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1193 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1194 | continue; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1195 | } |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1196 | /* Seek back 2 x struct utmp */ |
Kevin Steves | 5217265 | 2001-10-02 00:29:00 +0000 | [diff] [blame] | 1197 | if (lseek(fd, -(off_t)(2 * sizeof(struct utmp)), SEEK_CUR) == -1) { |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1198 | /* We've found the start of the file, so quit */ |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1199 | close(fd); |
| 1200 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1201 | } |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1202 | } |
| 1203 | |
| 1204 | /* We found an entry. Tidy up and return */ |
| 1205 | close(fd); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1206 | return (1); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1207 | } |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1208 | # endif /* USE_WTMP */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1209 | |
| 1210 | |
| 1211 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1212 | ** Low-level wtmpx functions |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1213 | **/ |
| 1214 | |
| 1215 | #ifdef USE_WTMPX |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1216 | /* |
| 1217 | * Write a wtmpx entry direct to the end of the file |
| 1218 | * This is a slight modification of code in OpenBSD's logwtmp.c |
| 1219 | */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1220 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1221 | wtmpx_write(struct logininfo *li, struct utmpx *utx) |
| 1222 | { |
Darren Tucker | c28b88a | 2004-02-10 16:49:35 +1100 | [diff] [blame] | 1223 | #ifndef HAVE_UPDWTMPX |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1224 | struct stat buf; |
| 1225 | int fd, ret = 1; |
| 1226 | |
| 1227 | if ((fd = open(WTMPX_FILE, O_WRONLY|O_APPEND, 0)) < 0) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1228 | logit("%s: problem opening %s: %s", __func__, |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1229 | WTMPX_FILE, strerror(errno)); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1230 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1231 | } |
| 1232 | |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1233 | if (fstat(fd, &buf) == 0) |
Darren Tucker | 8661b56 | 2003-07-06 15:20:46 +1000 | [diff] [blame] | 1234 | if (atomicio(vwrite, fd, utx, sizeof(*utx)) != sizeof(*utx)) { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1235 | ftruncate(fd, buf.st_size); |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1236 | logit("%s: problem writing %s: %s", __func__, |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1237 | WTMPX_FILE, strerror(errno)); |
| 1238 | ret = 0; |
| 1239 | } |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1240 | close(fd); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1241 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1242 | return (ret); |
Darren Tucker | c28b88a | 2004-02-10 16:49:35 +1100 | [diff] [blame] | 1243 | #else |
| 1244 | updwtmpx(WTMPX_FILE, utx); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1245 | return (1); |
Darren Tucker | c28b88a | 2004-02-10 16:49:35 +1100 | [diff] [blame] | 1246 | #endif |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1247 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1248 | |
| 1249 | |
| 1250 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1251 | wtmpx_perform_login(struct logininfo *li) |
| 1252 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1253 | struct utmpx utx; |
| 1254 | |
| 1255 | construct_utmpx(li, &utx); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1256 | return (wtmpx_write(li, &utx)); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1257 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1258 | |
| 1259 | |
| 1260 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1261 | wtmpx_perform_logout(struct logininfo *li) |
| 1262 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1263 | struct utmpx utx; |
| 1264 | |
| 1265 | construct_utmpx(li, &utx); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1266 | return (wtmpx_write(li, &utx)); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1267 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1268 | |
| 1269 | |
| 1270 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1271 | wtmpx_write_entry(struct logininfo *li) |
| 1272 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1273 | switch(li->type) { |
| 1274 | case LTYPE_LOGIN: |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1275 | return (wtmpx_perform_login(li)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1276 | case LTYPE_LOGOUT: |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1277 | return (wtmpx_perform_logout(li)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1278 | default: |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1279 | logit("%s: invalid type field", __func__); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1280 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1281 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1282 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1283 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1284 | /* Please see the notes above wtmp_islogin() for information about the |
| 1285 | next two functions */ |
| 1286 | |
| 1287 | /* Return true if this wtmpx entry indicates a login */ |
| 1288 | static int |
| 1289 | wtmpx_islogin(struct logininfo *li, struct utmpx *utx) |
| 1290 | { |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1291 | if (strncmp(li->username, utx->ut_name, |
| 1292 | MIN_SIZEOF(li->username, utx->ut_name)) == 0 ) { |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1293 | # ifdef HAVE_TYPE_IN_UTMPX |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1294 | if (utx->ut_type == USER_PROCESS) |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1295 | return (1); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1296 | # else |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1297 | return (1); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1298 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1299 | } |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1300 | return (0); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1301 | } |
| 1302 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1303 | |
| 1304 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1305 | wtmpx_get_entry(struct logininfo *li) |
| 1306 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1307 | struct stat st; |
| 1308 | struct utmpx utx; |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1309 | int fd, found=0; |
| 1310 | |
| 1311 | /* Clear the time entries */ |
| 1312 | li->tv_sec = li->tv_usec = 0; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1313 | |
| 1314 | if ((fd = open(WTMPX_FILE, O_RDONLY)) < 0) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1315 | logit("%s: problem opening %s: %s", __func__, |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1316 | WTMPX_FILE, strerror(errno)); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1317 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1318 | } |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1319 | if (fstat(fd, &st) != 0) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1320 | logit("%s: couldn't stat %s: %s", __func__, |
Tim Rice | cdb8294 | 2002-07-14 15:33:20 -0700 | [diff] [blame] | 1321 | WTMPX_FILE, strerror(errno)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1322 | close(fd); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1323 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1324 | } |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1325 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1326 | /* Seek to the start of the last struct utmpx */ |
Kevin Steves | 5217265 | 2001-10-02 00:29:00 +0000 | [diff] [blame] | 1327 | if (lseek(fd, -(off_t)sizeof(struct utmpx), SEEK_END) == -1 ) { |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1328 | /* probably a newly rotated wtmpx file */ |
| 1329 | close(fd); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1330 | return (0); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1331 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1332 | |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1333 | while (!found) { |
Damien Miller | 53c5d46 | 2000-06-28 00:50:50 +1000 | [diff] [blame] | 1334 | if (atomicio(read, fd, &utx, sizeof(utx)) != sizeof(utx)) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1335 | logit("%s: read of %s failed: %s", __func__, |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1336 | WTMPX_FILE, strerror(errno)); |
| 1337 | close (fd); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1338 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1339 | } |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1340 | /* |
| 1341 | * Logouts are recorded as a blank username on a particular |
| 1342 | * line. So, we just need to find the username in struct utmpx |
| 1343 | */ |
| 1344 | if (wtmpx_islogin(li, &utx)) { |
Tim Rice | 370e0ba | 2002-07-14 15:50:51 -0700 | [diff] [blame] | 1345 | found = 1; |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1346 | # if defined(HAVE_TV_IN_UTMPX) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1347 | li->tv_sec = utx.ut_tv.tv_sec; |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1348 | # elif defined(HAVE_TIME_IN_UTMPX) |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1349 | li->tv_sec = utx.ut_time; |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1350 | # endif |
Damien Miller | 1a13225 | 2000-06-13 21:23:17 +1000 | [diff] [blame] | 1351 | line_fullname(li->line, utx.ut_line, sizeof(li->line)); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1352 | # if defined(HAVE_HOST_IN_UTMPX) |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1353 | strlcpy(li->hostname, utx.ut_host, |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1354 | MIN_SIZEOF(li->hostname, utx.ut_host)); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1355 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1356 | continue; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1357 | } |
Kevin Steves | 5217265 | 2001-10-02 00:29:00 +0000 | [diff] [blame] | 1358 | if (lseek(fd, -(off_t)(2 * sizeof(struct utmpx)), SEEK_CUR) == -1) { |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1359 | close(fd); |
| 1360 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1361 | } |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1362 | } |
| 1363 | |
| 1364 | close(fd); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1365 | return (1); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1366 | } |
Damien Miller | d5bf307 | 2000-06-07 21:32:13 +1000 | [diff] [blame] | 1367 | #endif /* USE_WTMPX */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1368 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1369 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1370 | ** Low-level libutil login() functions |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1371 | **/ |
| 1372 | |
| 1373 | #ifdef USE_LOGIN |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1374 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1375 | syslogin_perform_login(struct logininfo *li) |
| 1376 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1377 | struct utmp *ut; |
| 1378 | |
Damien Miller | b0aae33 | 2004-09-12 15:26:00 +1000 | [diff] [blame] | 1379 | ut = xmalloc(sizeof(*ut)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1380 | construct_utmp(li, ut); |
| 1381 | login(ut); |
Damien Miller | f211efc | 2003-03-10 11:23:06 +1100 | [diff] [blame] | 1382 | free(ut); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1383 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1384 | return (1); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1385 | } |
| 1386 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1387 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1388 | syslogin_perform_logout(struct logininfo *li) |
| 1389 | { |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1390 | # ifdef HAVE_LOGOUT |
Darren Tucker | 4d2f361 | 2004-04-08 10:57:05 +1000 | [diff] [blame] | 1391 | char line[UT_LINESIZE]; |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1392 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1393 | (void)line_stripname(line, li->line, sizeof(line)); |
| 1394 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1395 | if (!logout(line)) |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1396 | logit("%s: logout() returned an error", __func__); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1397 | # ifdef HAVE_LOGWTMP |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1398 | else |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1399 | logwtmp(line, "", ""); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1400 | # endif |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1401 | /* FIXME: (ATL - if the need arises) What to do if we have |
| 1402 | * login, but no logout? what if logout but no logwtmp? All |
| 1403 | * routines are in libutil so they should all be there, |
| 1404 | * but... */ |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1405 | # endif |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1406 | return (1); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1407 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1408 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1409 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1410 | syslogin_write_entry(struct logininfo *li) |
| 1411 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1412 | switch (li->type) { |
| 1413 | case LTYPE_LOGIN: |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1414 | return (syslogin_perform_login(li)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1415 | case LTYPE_LOGOUT: |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1416 | return (syslogin_perform_logout(li)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1417 | default: |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1418 | logit("%s: Invalid type field", __func__); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1419 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1420 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1421 | } |
Damien Miller | d5bf307 | 2000-06-07 21:32:13 +1000 | [diff] [blame] | 1422 | #endif /* USE_LOGIN */ |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1423 | |
| 1424 | /* end of file log-syslogin.c */ |
| 1425 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1426 | /** |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1427 | ** Low-level lastlog functions |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1428 | **/ |
| 1429 | |
| 1430 | #ifdef USE_LASTLOG |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1431 | #define LL_FILE 1 |
| 1432 | #define LL_DIR 2 |
| 1433 | #define LL_OTHER 3 |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1434 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1435 | static void |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1436 | lastlog_construct(struct logininfo *li, struct lastlog *last) |
| 1437 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1438 | /* clear the structure */ |
Damien Miller | 348c9b7 | 2000-08-15 10:01:22 +1000 | [diff] [blame] | 1439 | memset(last, '\0', sizeof(*last)); |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1440 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1441 | line_stripname(last->ll_line, li->line, sizeof(last->ll_line)); |
andre | 6bb9237 | 2000-06-19 08:20:03 +0000 | [diff] [blame] | 1442 | strlcpy(last->ll_host, li->hostname, |
| 1443 | MIN_SIZEOF(last->ll_host, li->hostname)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1444 | last->ll_time = li->tv_sec; |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1445 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1446 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1447 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1448 | lastlog_filetype(char *filename) |
| 1449 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1450 | struct stat st; |
| 1451 | |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1452 | if (stat(LASTLOG_FILE, &st) != 0) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1453 | logit("%s: Couldn't stat %s: %s", __func__, |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1454 | LASTLOG_FILE, strerror(errno)); |
| 1455 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1456 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1457 | if (S_ISDIR(st.st_mode)) |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1458 | return (LL_DIR); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1459 | else if (S_ISREG(st.st_mode)) |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1460 | return (LL_FILE); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1461 | else |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1462 | return (LL_OTHER); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1463 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1464 | |
| 1465 | |
| 1466 | /* open the file (using filemode) and seek to the login entry */ |
| 1467 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1468 | lastlog_openseek(struct logininfo *li, int *fd, int filemode) |
| 1469 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1470 | off_t offset; |
| 1471 | int type; |
| 1472 | char lastlog_file[1024]; |
| 1473 | |
| 1474 | type = lastlog_filetype(LASTLOG_FILE); |
| 1475 | switch (type) { |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1476 | case LL_FILE: |
| 1477 | strlcpy(lastlog_file, LASTLOG_FILE, |
| 1478 | sizeof(lastlog_file)); |
| 1479 | break; |
| 1480 | case LL_DIR: |
| 1481 | snprintf(lastlog_file, sizeof(lastlog_file), "%s/%s", |
| 1482 | LASTLOG_FILE, li->username); |
| 1483 | break; |
| 1484 | default: |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1485 | logit("%s: %.100s is not a file or directory!", __func__, |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1486 | LASTLOG_FILE); |
| 1487 | return (0); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1488 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1489 | |
Damien Miller | 405dc60 | 2003-04-09 21:12:52 +1000 | [diff] [blame] | 1490 | *fd = open(lastlog_file, filemode, 0600); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1491 | if (*fd < 0) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1492 | debug("%s: Couldn't open %s: %s", __func__, |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1493 | lastlog_file, strerror(errno)); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1494 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1495 | } |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1496 | |
Damien Miller | e477ef6 | 2000-08-15 10:21:17 +1000 | [diff] [blame] | 1497 | if (type == LL_FILE) { |
| 1498 | /* find this uid's offset in the lastlog file */ |
Kevin Steves | 5217265 | 2001-10-02 00:29:00 +0000 | [diff] [blame] | 1499 | offset = (off_t) ((long)li->uid * sizeof(struct lastlog)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1500 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1501 | if (lseek(*fd, offset, SEEK_SET) != offset) { |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1502 | logit("%s: %s->lseek(): %s", __func__, |
| 1503 | lastlog_file, strerror(errno)); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1504 | return (0); |
Damien Miller | e477ef6 | 2000-08-15 10:21:17 +1000 | [diff] [blame] | 1505 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1506 | } |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1507 | |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1508 | return (1); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1509 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1510 | |
| 1511 | static int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1512 | lastlog_perform_login(struct logininfo *li) |
| 1513 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1514 | struct lastlog last; |
| 1515 | int fd; |
| 1516 | |
| 1517 | /* create our struct lastlog */ |
| 1518 | lastlog_construct(li, &last); |
| 1519 | |
Damien Miller | 405dc60 | 2003-04-09 21:12:52 +1000 | [diff] [blame] | 1520 | if (!lastlog_openseek(li, &fd, O_RDWR|O_CREAT)) |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1521 | return (0); |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1522 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1523 | /* write the entry */ |
Darren Tucker | 8661b56 | 2003-07-06 15:20:46 +1000 | [diff] [blame] | 1524 | if (atomicio(vwrite, fd, &last, sizeof(last)) != sizeof(last)) { |
Damien Miller | c1132e7 | 2000-08-18 14:08:38 +1000 | [diff] [blame] | 1525 | close(fd); |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1526 | logit("%s: Error writing to %s: %s", __func__, |
Damien Miller | c1132e7 | 2000-08-18 14:08:38 +1000 | [diff] [blame] | 1527 | LASTLOG_FILE, strerror(errno)); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1528 | return (0); |
Damien Miller | dd47aa2 | 2000-06-27 11:18:27 +1000 | [diff] [blame] | 1529 | } |
Damien Miller | c1132e7 | 2000-08-18 14:08:38 +1000 | [diff] [blame] | 1530 | |
| 1531 | close(fd); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1532 | return (1); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1533 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1534 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1535 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1536 | lastlog_write_entry(struct logininfo *li) |
| 1537 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1538 | switch(li->type) { |
| 1539 | case LTYPE_LOGIN: |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1540 | return (lastlog_perform_login(li)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1541 | default: |
Damien Miller | 6b0279c | 2004-09-12 15:25:17 +1000 | [diff] [blame] | 1542 | logit("%s: Invalid type field", __func__); |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1543 | return (0); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1544 | } |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1545 | } |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1546 | |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1547 | static void |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1548 | lastlog_populate_entry(struct logininfo *li, struct lastlog *last) |
| 1549 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1550 | line_fullname(li->line, last->ll_line, sizeof(li->line)); |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 1551 | strlcpy(li->hostname, last->ll_host, |
Damien Miller | 8899ed3 | 2004-09-12 15:18:55 +1000 | [diff] [blame] | 1552 | MIN_SIZEOF(li->hostname, last->ll_host)); |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1553 | li->tv_sec = last->ll_time; |
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 | int |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1557 | lastlog_get_entry(struct logininfo *li) |
| 1558 | { |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1559 | struct lastlog last; |
Damien Miller | 7df881d | 2003-01-07 16:46:58 +1100 | [diff] [blame] | 1560 | int fd, ret; |
andre | 2ff7b5d | 2000-06-03 14:57:40 +0000 | [diff] [blame] | 1561 | |
Damien Miller | 3a8a5cd | 2001-10-22 16:49:22 +1000 | [diff] [blame] | 1562 | if (!lastlog_openseek(li, &fd, O_RDONLY)) |
Damien Miller | 7df881d | 2003-01-07 16:46:58 +1100 | [diff] [blame] | 1563 | return (0); |
Damien Miller | 3a8a5cd | 2001-10-22 16:49:22 +1000 | [diff] [blame] | 1564 | |
Damien Miller | 7df881d | 2003-01-07 16:46:58 +1100 | [diff] [blame] | 1565 | ret = atomicio(read, fd, &last, sizeof(last)); |
Damien Miller | 3a8a5cd | 2001-10-22 16:49:22 +1000 | [diff] [blame] | 1566 | close(fd); |
| 1567 | |
Damien Miller | 7df881d | 2003-01-07 16:46:58 +1100 | [diff] [blame] | 1568 | switch (ret) { |
| 1569 | case 0: |
| 1570 | memset(&last, '\0', sizeof(last)); |
| 1571 | /* FALLTHRU */ |
| 1572 | case sizeof(last): |
| 1573 | lastlog_populate_entry(li, &last); |
| 1574 | return (1); |
| 1575 | case -1: |
Damien Miller | a8e06ce | 2003-11-21 23:48:55 +1100 | [diff] [blame] | 1576 | error("%s: Error reading from %s: %s", __func__, |
Damien Miller | 7df881d | 2003-01-07 16:46:58 +1100 | [diff] [blame] | 1577 | LASTLOG_FILE, strerror(errno)); |
| 1578 | return (0); |
| 1579 | default: |
| 1580 | error("%s: Error reading from %s: Expecting %d, got %d", |
| 1581 | __func__, LASTLOG_FILE, sizeof(last), ret); |
| 1582 | return (0); |
| 1583 | } |
Damien Miller | 3a8a5cd | 2001-10-22 16:49:22 +1000 | [diff] [blame] | 1584 | |
Damien Miller | 7df881d | 2003-01-07 16:46:58 +1100 | [diff] [blame] | 1585 | /* NOTREACHED */ |
| 1586 | return (0); |
andre | 61e6725 | 2000-06-04 17:07:49 +0000 | [diff] [blame] | 1587 | } |
Damien Miller | d5bf307 | 2000-06-07 21:32:13 +1000 | [diff] [blame] | 1588 | #endif /* USE_LASTLOG */ |
Darren Tucker | 2fba993 | 2005-02-02 23:30:24 +1100 | [diff] [blame^] | 1589 | |
| 1590 | #ifdef USE_BTMP |
| 1591 | /* |
| 1592 | * Logs failed login attempts in _PATH_BTMP if that exists. |
| 1593 | * The most common login failure is to give password instead of username. |
| 1594 | * So the _PATH_BTMP file checked for the correct permission, so that |
| 1595 | * only root can read it. |
| 1596 | */ |
| 1597 | |
| 1598 | void |
| 1599 | record_failed_login(const char *username, const char *hostname, |
| 1600 | const char *ttyn) |
| 1601 | { |
| 1602 | int fd; |
| 1603 | struct utmp ut; |
| 1604 | struct sockaddr_storage from; |
| 1605 | size_t fromlen = sizeof(from); |
| 1606 | struct sockaddr_in *a4; |
| 1607 | struct sockaddr_in6 *a6; |
| 1608 | time_t t; |
| 1609 | struct stat fst; |
| 1610 | |
| 1611 | if (geteuid() != 0) |
| 1612 | return; |
| 1613 | if ((fd = open(_PATH_BTMP, O_WRONLY | O_APPEND)) < 0) { |
| 1614 | debug("Unable to open the btmp file %s: %s", _PATH_BTMP, |
| 1615 | strerror(errno)); |
| 1616 | return; |
| 1617 | } |
| 1618 | if (fstat(fd, &fst) < 0) { |
| 1619 | logit("%s: fstat of %s failed: %s", __func__, _PATH_BTMP, |
| 1620 | strerror(errno)); |
| 1621 | goto out; |
| 1622 | } |
| 1623 | if((fst.st_mode & (S_IRWXG | S_IRWXO)) || (fst.st_uid != 0)){ |
| 1624 | logit("Excess permission or bad ownership on file %s", |
| 1625 | _PATH_BTMP); |
| 1626 | goto out; |
| 1627 | } |
| 1628 | |
| 1629 | memset(&ut, 0, sizeof(ut)); |
| 1630 | /* strncpy because we don't necessarily want nul termination */ |
| 1631 | strncpy(ut.ut_user, username, sizeof(ut.ut_user)); |
| 1632 | strlcpy(ut.ut_line, "ssh:notty", sizeof(ut.ut_line)); |
| 1633 | |
| 1634 | time(&t); |
| 1635 | ut.ut_time = t; /* ut_time is not always a time_t */ |
| 1636 | ut.ut_type = LOGIN_PROCESS; |
| 1637 | ut.ut_pid = getpid(); |
| 1638 | |
| 1639 | /* strncpy because we don't necessarily want nul termination */ |
| 1640 | strncpy(ut.ut_host, hostname, sizeof(ut.ut_host)); |
| 1641 | |
| 1642 | if (packet_connection_is_on_socket() && |
| 1643 | getpeername(packet_get_connection_in(), |
| 1644 | (struct sockaddr *)&from, &fromlen) == 0) { |
| 1645 | ipv64_normalise_mapped(&from, &fromlen); |
| 1646 | if (from.ss_family == AF_INET) { |
| 1647 | a4 = (struct sockaddr_in *)&from; |
| 1648 | memcpy(&ut.ut_addr, &(a4->sin_addr), |
| 1649 | MIN_SIZEOF(ut.ut_addr, a4->sin_addr)); |
| 1650 | } |
| 1651 | #ifdef HAVE_ADDR_V6_IN_UTMP |
| 1652 | if (from.ss_family == AF_INET6) { |
| 1653 | a6 = (struct sockaddr_in6 *)&from; |
| 1654 | memcpy(&ut.ut_addr_v6, &(a6->sin6_addr), |
| 1655 | MIN_SIZEOF(ut.ut_addr_v6, a6->sin6_addr)); |
| 1656 | } |
| 1657 | #endif |
| 1658 | } |
| 1659 | |
| 1660 | if (atomicio(vwrite, fd, &ut, sizeof(ut)) != sizeof(ut)) |
| 1661 | error("Failed to write to %s: %s", _PATH_BTMP, |
| 1662 | strerror(errno)); |
| 1663 | |
| 1664 | out: |
| 1665 | close(fd); |
| 1666 | } |
| 1667 | #endif /* USE_BTMP */ |